summaryrefslogtreecommitdiffstats
path: root/binutils-2.24/bfd/elf64-ppc.c
diff options
context:
space:
mode:
authorElliott Hughes <enh@google.com>2015-07-07 17:06:28 -0700
committerElliott Hughes <enh@google.com>2015-07-07 17:06:28 -0700
commite75a9625a658e75feee8e2e2b6d42fa03d47b26d (patch)
treed15bb9a196ea7b28219911d7c26c93585454ed1d /binutils-2.24/bfd/elf64-ppc.c
parent548e866f819455e730b5981cefed80dfb9c56033 (diff)
downloadtoolchain_binutils-e75a9625a658e75feee8e2e2b6d42fa03d47b26d.tar.gz
toolchain_binutils-e75a9625a658e75feee8e2e2b6d42fa03d47b26d.tar.bz2
toolchain_binutils-e75a9625a658e75feee8e2e2b6d42fa03d47b26d.zip
Remove binutils-2.24.
Change-Id: I26a47a29e4d16e75e21e9295504079a815c334c6
Diffstat (limited to 'binutils-2.24/bfd/elf64-ppc.c')
-rw-r--r--binutils-2.24/bfd/elf64-ppc.c15025
1 files changed, 0 insertions, 15025 deletions
diff --git a/binutils-2.24/bfd/elf64-ppc.c b/binutils-2.24/bfd/elf64-ppc.c
deleted file mode 100644
index bf13a5da..00000000
--- a/binutils-2.24/bfd/elf64-ppc.c
+++ /dev/null
@@ -1,15025 +0,0 @@
-/* PowerPC64-specific support for 64-bit ELF.
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
- 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
- Written by Linus Nordberg, Swox AB <info@swox.com>,
- based on elf32-ppc.c by Ian Lance Taylor.
- Largely rewritten by Alan Modra.
-
- This file is part of BFD, the Binary File Descriptor library.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
-
-
-/* The 64-bit PowerPC ELF ABI may be found at
- http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
- http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
-
-#include "sysdep.h"
-#include <stdarg.h>
-#include "bfd.h"
-#include "bfdlink.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
-#include "elf/ppc64.h"
-#include "elf64-ppc.h"
-#include "dwarf2.h"
-
-static bfd_reloc_status_type ppc64_elf_ha_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_branch_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_brtaken_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_sectoff_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_toc_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_toc64_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_reloc_status_type ppc64_elf_unhandled_reloc
- (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
-static bfd_vma opd_entry_value
- (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
-
-#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
-#define TARGET_LITTLE_NAME "elf64-powerpcle"
-#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
-#define TARGET_BIG_NAME "elf64-powerpc"
-#define ELF_ARCH bfd_arch_powerpc
-#define ELF_TARGET_ID PPC64_ELF_DATA
-#define ELF_MACHINE_CODE EM_PPC64
-#define ELF_MAXPAGESIZE 0x10000
-#define ELF_COMMONPAGESIZE 0x1000
-#define elf_info_to_howto ppc64_elf_info_to_howto
-
-#define elf_backend_want_got_sym 0
-#define elf_backend_want_plt_sym 0
-#define elf_backend_plt_alignment 3
-#define elf_backend_plt_not_loaded 1
-#define elf_backend_got_header_size 8
-#define elf_backend_can_gc_sections 1
-#define elf_backend_can_refcount 1
-#define elf_backend_rela_normal 1
-#define elf_backend_default_execstack 0
-
-#define bfd_elf64_mkobject ppc64_elf_mkobject
-#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
-#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
-#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
-#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
-#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
-#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
-#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
-#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
-#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
-
-#define elf_backend_object_p ppc64_elf_object_p
-#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
-#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
-#define elf_backend_write_core_note ppc64_elf_write_core_note
-#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
-#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
-#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
-#define elf_backend_check_directives ppc64_elf_process_dot_syms
-#define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
-#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
-#define elf_backend_check_relocs ppc64_elf_check_relocs
-#define elf_backend_gc_keep ppc64_elf_gc_keep
-#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
-#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
-#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
-#define elf_backend_hide_symbol ppc64_elf_hide_symbol
-#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
-#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
-#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
-#define elf_backend_hash_symbol ppc64_elf_hash_symbol
-#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
-#define elf_backend_action_discarded ppc64_elf_action_discarded
-#define elf_backend_relocate_section ppc64_elf_relocate_section
-#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
-#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
-#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
-#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
-#define elf_backend_special_sections ppc64_elf_special_sections
-#define elf_backend_post_process_headers _bfd_elf_set_osabi
-#define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
-
-/* The name of the dynamic interpreter. This is put in the .interp
- section. */
-#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
-
-/* The size in bytes of an entry in the procedure linkage table. */
-#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
-
-/* The initial size of the plt reserved for the dynamic linker. */
-#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
-
-/* Offsets to some stack save slots. */
-#define STK_LR 16
-#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
-/* This one is dodgy. ABIv2 does not have a linker word, so use the
- CR save slot. Used only by optimised __tls_get_addr call stub,
- relying on __tls_get_addr_opt not saving CR.. */
-#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
-
-/* TOC base pointers offset from start of TOC. */
-#define TOC_BASE_OFF 0x8000
-
-/* Offset of tp and dtp pointers from start of TLS block. */
-#define TP_OFFSET 0x7000
-#define DTP_OFFSET 0x8000
-
-/* .plt call stub instructions. The normal stub is like this, but
- sometimes the .plt entry crosses a 64k boundary and we need to
- insert an addi to adjust r11. */
-#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
-#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
-#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
-#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
-#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
-#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
-#define BCTR 0x4e800420 /* bctr */
-
-#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
-#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
-#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
-
-#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
-#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
-#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
-#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
-#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
-#define BNECTR 0x4ca20420 /* bnectr+ */
-#define BNECTR_P4 0x4ce20420 /* bnectr+ */
-
-#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
-#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
-#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
-
-#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
-
-#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
-#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
-
-/* glink call stub instructions. We enter with the index in R0. */
-#define GLINK_CALL_STUB_SIZE (16*4)
- /* 0: */
- /* .quad plt0-1f */
- /* __glink: */
-#define MFLR_R12 0x7d8802a6 /* mflr %12 */
-#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
- /* 1: */
-#define MFLR_R11 0x7d6802a6 /* mflr %11 */
- /* ld %2,(0b-1b)(%11) */
-#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
-#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
- /* ld %12,0(%11) */
- /* ld %2,8(%11) */
- /* mtctr %12 */
- /* ld %11,16(%11) */
- /* bctr */
-#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
-#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
-#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
-#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
-#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
-
-/* Pad with this. */
-#define NOP 0x60000000
-
-/* Some other nops. */
-#define CROR_151515 0x4def7b82
-#define CROR_313131 0x4ffffb82
-
-/* .glink entries for the first 32k functions are two instructions. */
-#define LI_R0_0 0x38000000 /* li %r0,0 */
-#define B_DOT 0x48000000 /* b . */
-
-/* After that, we need two instructions to load the index, followed by
- a branch. */
-#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
-#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
-
-/* Instructions used by the save and restore reg functions. */
-#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
-#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
-#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
-#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
-#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
-#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
-#define LI_R12_0 0x39800000 /* li %r12,0 */
-#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
-#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
-#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
-#define BLR 0x4e800020 /* blr */
-
-/* Since .opd is an array of descriptors and each entry will end up
- with identical R_PPC64_RELATIVE relocs, there is really no need to
- propagate .opd relocs; The dynamic linker should be taught to
- relocate .opd without reloc entries. */
-#ifndef NO_OPD_RELOCS
-#define NO_OPD_RELOCS 0
-#endif
-
-#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
-
-/* Relocation HOWTO's. */
-static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
-
-static reloc_howto_type ppc64_elf_howto_raw[] = {
- /* This reloc does nothing. */
- HOWTO (R_PPC64_NONE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_NONE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A standard 32 bit relocation. */
- HOWTO (R_PPC64_ADDR32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* An absolute 26 bit branch; the lower two bits must be zero.
- FIXME: we don't check that, we just clear them. */
- HOWTO (R_PPC64_ADDR24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR24", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x03fffffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A standard 16 bit relocation. */
- HOWTO (R_PPC64_ADDR16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A 16 bit relocation without overflow. */
- HOWTO (R_PPC64_ADDR16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Bits 16-31 of an address. */
- HOWTO (R_PPC64_ADDR16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Bits 16-31 of an address, plus 1 if the contents of the low 16
- bits, treated as a signed number, is negative. */
- HOWTO (R_PPC64_ADDR16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_ha_reloc, /* special_function */
- "R_PPC64_ADDR16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* An absolute 16 bit branch; the lower two bits must be zero.
- FIXME: we don't check that, we just clear them. */
- HOWTO (R_PPC64_ADDR14, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_branch_reloc, /* special_function */
- "R_PPC64_ADDR14", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* An absolute 16 bit branch, for which bit 10 should be set to
- indicate that the branch is expected to be taken. The lower two
- bits must be zero. */
- HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_brtaken_reloc, /* special_function */
- "R_PPC64_ADDR14_BRTAKEN",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* An absolute 16 bit branch, for which bit 10 should be set to
- indicate that the branch is not expected to be taken. The lower
- two bits must be zero. */
- HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_brtaken_reloc, /* special_function */
- "R_PPC64_ADDR14_BRNTAKEN",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A relative 26 bit branch; the lower two bits must be zero. */
- HOWTO (R_PPC64_REL24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_branch_reloc, /* special_function */
- "R_PPC64_REL24", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x03fffffc, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* A relative 16 bit branch; the lower two bits must be zero. */
- HOWTO (R_PPC64_REL14, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_branch_reloc, /* special_function */
- "R_PPC64_REL14", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
- the branch is expected to be taken. The lower two bits must be
- zero. */
- HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_brtaken_reloc, /* special_function */
- "R_PPC64_REL14_BRTAKEN", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
- the branch is not expected to be taken. The lower two bits must
- be zero. */
- HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_brtaken_reloc, /* special_function */
- "R_PPC64_REL14_BRNTAKEN",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x0000fffc, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
- symbol. */
- HOWTO (R_PPC64_GOT16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_PPC64_GOT16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_PPC64_GOT16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed,/* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_PPC64_GOT16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed,/* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* This is used only by the dynamic linker. The symbol should exist
- both in the object being run and in some shared library. The
- dynamic linker copies the data addressed by the symbol from the
- shared library into the object, because the object being
- run has to have the data at some particular address. */
- HOWTO (R_PPC64_COPY, /* type */
- 0, /* rightshift */
- 0, /* this one is variable size */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_COPY", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR64, but used when setting global offset table
- entries. */
- HOWTO (R_PPC64_GLOB_DAT, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GLOB_DAT", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Created by the link editor. Marks a procedure linkage table
- entry for a symbol. */
- HOWTO (R_PPC64_JMP_SLOT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_JMP_SLOT", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Used only by the dynamic linker. When the object is run, this
- doubleword64 is set to the load address of the object, plus the
- addend. */
- HOWTO (R_PPC64_RELATIVE, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_RELATIVE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR32, but may be unaligned. */
- HOWTO (R_PPC64_UADDR32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_UADDR32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16, but may be unaligned. */
- HOWTO (R_PPC64_UADDR16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_UADDR16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 32-bit PC relative. */
- HOWTO (R_PPC64_REL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- /* FIXME: Verify. Was complain_overflow_bitfield. */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* 32-bit relocation to the symbol's procedure linkage table. */
- HOWTO (R_PPC64_PLT32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 32-bit PC relative relocation to the symbol's procedure linkage table.
- FIXME: R_PPC64_PLTREL32 not supported. */
- HOWTO (R_PPC64_PLTREL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_PLTREL32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
- the symbol. */
- HOWTO (R_PPC64_PLT16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
- the symbol. */
- HOWTO (R_PPC64_PLT16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
- the symbol. */
- HOWTO (R_PPC64_PLT16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16-bit section relative relocation. */
- HOWTO (R_PPC64_SECTOFF, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_sectoff_reloc, /* special_function */
- "R_PPC64_SECTOFF", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_SECTOFF, but no overflow warning. */
- HOWTO (R_PPC64_SECTOFF_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_sectoff_reloc, /* special_function */
- "R_PPC64_SECTOFF_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16-bit upper half section relative relocation. */
- HOWTO (R_PPC64_SECTOFF_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_sectoff_reloc, /* special_function */
- "R_PPC64_SECTOFF_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16-bit upper half adjusted section relative relocation. */
- HOWTO (R_PPC64_SECTOFF_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_sectoff_ha_reloc, /* special_function */
- "R_PPC64_SECTOFF_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_REL24 without touching the two least significant bits. */
- HOWTO (R_PPC64_REL30, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 30, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL30", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffffffc, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
-
- /* A standard 64-bit relocation. */
- HOWTO (R_PPC64_ADDR64, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* The bits 32-47 of an address. */
- HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGHER", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* The bits 32-47 of an address, plus 1 if the contents of the low
- 16 bits, treated as a signed number, is negative. */
- HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_ha_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGHERA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* The bits 48-63 of an address. */
- HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGHEST", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* The bits 48-63 of an address, plus 1 if the contents of the low
- 16 bits, treated as a signed number, is negative. */
- HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_ha_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGHESTA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like ADDR64, but may be unaligned. */
- HOWTO (R_PPC64_UADDR64, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_UADDR64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 64-bit relative relocation. */
- HOWTO (R_PPC64_REL64, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* 64-bit relocation to the symbol's procedure linkage table. */
- HOWTO (R_PPC64_PLT64, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 64-bit PC relative relocation to the symbol's procedure linkage
- table. */
- /* FIXME: R_PPC64_PLTREL64 not supported. */
- HOWTO (R_PPC64_PLTREL64, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTREL64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* 16 bit TOC-relative relocation. */
-
- /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
- HOWTO (R_PPC64_TOC16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_toc_reloc, /* special_function */
- "R_PPC64_TOC16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16 bit TOC-relative relocation without overflow. */
-
- /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
- HOWTO (R_PPC64_TOC16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_toc_reloc, /* special_function */
- "R_PPC64_TOC16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16 bit TOC-relative relocation, high 16 bits. */
-
- /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
- HOWTO (R_PPC64_TOC16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_toc_reloc, /* special_function */
- "R_PPC64_TOC16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
- contents of the low 16 bits, treated as a signed number, is
- negative. */
-
- /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
- HOWTO (R_PPC64_TOC16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_toc_ha_reloc, /* special_function */
- "R_PPC64_TOC16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* 64-bit relocation; insert value of TOC base (.TOC.). */
-
- /* R_PPC64_TOC 51 doubleword64 .TOC. */
- HOWTO (R_PPC64_TOC, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_toc64_reloc, /* special_function */
- "R_PPC64_TOC", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_GOT16, but also informs the link editor that the
- value to relocate may (!) refer to a PLT entry which the link
- editor (a) may replace with the symbol value. If the link editor
- is unable to fully resolve the symbol, it may (b) create a PLT
- entry and store the address to the new PLT entry in the GOT.
- This permits lazy resolution of function symbols at run time.
- The link editor may also skip all of this and just (c) emit a
- R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
- /* FIXME: R_PPC64_PLTGOT16 not implemented. */
- HOWTO (R_PPC64_PLTGOT16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLTGOT16, but without overflow. */
- /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
- HOWTO (R_PPC64_PLTGOT16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
- /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
- HOWTO (R_PPC64_PLTGOT16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
- 1 if the contents of the low 16 bits, treated as a signed number,
- is negative. */
- /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
- HOWTO (R_PPC64_PLTGOT16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
- HOWTO (R_PPC64_ADDR16_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
- HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_LO_DS",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_GOT16, but for instructions with a DS field. */
- HOWTO (R_PPC64_GOT16_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
- HOWTO (R_PPC64_GOT16_LO_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
- HOWTO (R_PPC64_PLT16_LO_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLT16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
- HOWTO (R_PPC64_SECTOFF_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc64_elf_sectoff_reloc, /* special_function */
- "R_PPC64_SECTOFF_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
- HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_sectoff_reloc, /* special_function */
- "R_PPC64_SECTOFF_LO_DS",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_TOC16, but for instructions with a DS field. */
- HOWTO (R_PPC64_TOC16_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_toc_reloc, /* special_function */
- "R_PPC64_TOC16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
- HOWTO (R_PPC64_TOC16_LO_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_toc_reloc, /* special_function */
- "R_PPC64_TOC16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
- /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
- HOWTO (R_PPC64_PLTGOT16_DS, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
- /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
- HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_PLTGOT16_LO_DS",/* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Marker relocs for TLS. */
- HOWTO (R_PPC64_TLS,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_TLS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (R_PPC64_TLSGD,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_TLSGD", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (R_PPC64_TLSLD,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_TLSLD", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (R_PPC64_TOCSAVE,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_TOCSAVE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Computes the load module index of the load module that contains the
- definition of its TLS sym. */
- HOWTO (R_PPC64_DTPMOD64,
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPMOD64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Computes a dtv-relative displacement, the difference between the value
- of sym+add and the base address of the thread-local storage block that
- contains the definition of sym, minus 0x8000. */
- HOWTO (R_PPC64_DTPREL64,
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A 16 bit dtprel reloc. */
- HOWTO (R_PPC64_DTPREL16,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16, but no overflow. */
- HOWTO (R_PPC64_DTPREL16_LO,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_LO, but next higher group of 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_HI, but next higher group of 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HIGHER,
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGHER", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HIGHERA,
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGHERA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HIGHEST,
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGHEST", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
- HOWTO (R_PPC64_DTPREL16_HIGHESTA,
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGHESTA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16, but for insns with a DS field. */
- HOWTO (R_PPC64_DTPREL16_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like DTPREL16_DS, but no overflow. */
- HOWTO (R_PPC64_DTPREL16_LO_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Computes a tp-relative displacement, the difference between the value of
- sym+add and the value of the thread pointer (r13). */
- HOWTO (R_PPC64_TPREL64,
- 0, /* rightshift */
- 4, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL64", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A 16 bit tprel reloc. */
- HOWTO (R_PPC64_TPREL16,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16, but no overflow. */
- HOWTO (R_PPC64_TPREL16_LO,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_LO, but next higher group of 16 bits. */
- HOWTO (R_PPC64_TPREL16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_TPREL16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_HI, but next higher group of 16 bits. */
- HOWTO (R_PPC64_TPREL16_HIGHER,
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGHER", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
- HOWTO (R_PPC64_TPREL16_HIGHERA,
- 32, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGHERA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
- HOWTO (R_PPC64_TPREL16_HIGHEST,
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGHEST", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
- HOWTO (R_PPC64_TPREL16_HIGHESTA,
- 48, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGHESTA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16, but for insns with a DS field. */
- HOWTO (R_PPC64_TPREL16_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like TPREL16_DS, but no overflow. */
- HOWTO (R_PPC64_TPREL16_LO_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
- with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
- to the first entry relative to the TOC base (r2). */
- HOWTO (R_PPC64_GOT_TLSGD16,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSGD16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSGD16, but no overflow. */
- HOWTO (R_PPC64_GOT_TLSGD16_LO,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSGD16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
- HOWTO (R_PPC64_GOT_TLSGD16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSGD16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_GOT_TLSGD16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSGD16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
- with values (sym+add)@dtpmod and zero, and computes the offset to the
- first entry relative to the TOC base (r2). */
- HOWTO (R_PPC64_GOT_TLSLD16,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSLD16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSLD16, but no overflow. */
- HOWTO (R_PPC64_GOT_TLSLD16_LO,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSLD16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
- HOWTO (R_PPC64_GOT_TLSLD16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSLD16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_GOT_TLSLD16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TLSLD16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
- the offset to the entry relative to the TOC base (r2). */
- HOWTO (R_PPC64_GOT_DTPREL16_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_DTPREL16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_DTPREL16_DS, but no overflow. */
- HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
- HOWTO (R_PPC64_GOT_DTPREL16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_DTPREL16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_GOT_DTPREL16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_DTPREL16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
- offset to the entry relative to the TOC base (r2). */
- HOWTO (R_PPC64_GOT_TPREL16_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TPREL16_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TPREL16_DS, but no overflow. */
- HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TPREL16_LO_DS", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
- HOWTO (R_PPC64_GOT_TPREL16_HI,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TPREL16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
- HOWTO (R_PPC64_GOT_TPREL16_HA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_GOT_TPREL16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (R_PPC64_JMP_IREL, /* type */
- 0, /* rightshift */
- 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_JMP_IREL", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- HOWTO (R_PPC64_IRELATIVE, /* type */
- 0, /* rightshift */
- 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
- 64, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_IRELATIVE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- ONES (64), /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* A 16 bit relative relocation. */
- HOWTO (R_PPC64_REL16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* A 16 bit relative relocation without overflow. */
- HOWTO (R_PPC64_REL16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL16_LO", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* The high order 16 bits of a relative address. */
- HOWTO (R_PPC64_REL16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_REL16_HI", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* The high order 16 bits of a relative address, plus 1 if the contents of
- the low 16 bits, treated as a signed number, is negative. */
- HOWTO (R_PPC64_REL16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc64_elf_ha_reloc, /* special_function */
- "R_PPC64_REL16_HA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- TRUE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HI, but no overflow. */
- HOWTO (R_PPC64_ADDR16_HIGH, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGH", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_ADDR16_HA, but no overflow. */
- HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_ha_reloc, /* special_function */
- "R_PPC64_ADDR16_HIGHA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_DTPREL16_HI, but no overflow. */
- HOWTO (R_PPC64_DTPREL16_HIGH,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGH", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_DTPREL16_HA, but no overflow. */
- HOWTO (R_PPC64_DTPREL16_HIGHA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_DTPREL16_HIGHA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_TPREL16_HI, but no overflow. */
- HOWTO (R_PPC64_TPREL16_HIGH,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGH", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* Like R_PPC64_TPREL16_HA, but no overflow. */
- HOWTO (R_PPC64_TPREL16_HIGHA,
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc64_elf_unhandled_reloc, /* special_function */
- "R_PPC64_TPREL16_HIGHA", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* GNU extension to record C++ vtable hierarchy. */
- HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC64_GNU_VTINHERIT", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-
- /* GNU extension to record C++ vtable member usage. */
- HOWTO (R_PPC64_GNU_VTENTRY, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_PPC64_GNU_VTENTRY", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
-};
-
-
-/* Initialize the ppc64_elf_howto_table, so that linear accesses can
- be done. */
-
-static void
-ppc_howto_init (void)
-{
- unsigned int i, type;
-
- for (i = 0;
- i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
- i++)
- {
- type = ppc64_elf_howto_raw[i].type;
- BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
- / sizeof (ppc64_elf_howto_table[0])));
- ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
- }
-}
-
-static reloc_howto_type *
-ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
-{
- enum elf_ppc64_reloc_type r = R_PPC64_NONE;
-
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- /* Initialize howto table if needed. */
- ppc_howto_init ();
-
- switch (code)
- {
- default:
- return NULL;
-
- case BFD_RELOC_NONE: r = R_PPC64_NONE;
- break;
- case BFD_RELOC_32: r = R_PPC64_ADDR32;
- break;
- case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
- break;
- case BFD_RELOC_16: r = R_PPC64_ADDR16;
- break;
- case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
- break;
- case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
- break;
- case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
- break;
- case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
- break;
- case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
- break;
- case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
- break;
- case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
- break;
- case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
- break;
- case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
- break;
- case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
- break;
- case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
- break;
- case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
- break;
- case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
- break;
- case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
- break;
- case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
- break;
- case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
- break;
- case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
- break;
- case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
- break;
- case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
- break;
- case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
- break;
- case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
- break;
- case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
- break;
- case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
- break;
- case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
- break;
- case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
- break;
- case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
- break;
- case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
- break;
- case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
- break;
- case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
- break;
- case BFD_RELOC_64: r = R_PPC64_ADDR64;
- break;
- case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
- break;
- case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
- break;
- case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
- break;
- case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
- break;
- case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
- break;
- case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
- break;
- case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
- break;
- case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
- break;
- case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
- break;
- case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
- break;
- case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
- break;
- case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
- break;
- case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
- break;
- case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
- break;
- case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
- break;
- case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
- break;
- case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
- break;
- case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
- break;
- case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
- break;
- case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
- break;
- case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
- break;
- case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
- break;
- case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
- break;
- case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
- break;
- case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
- break;
- case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
- break;
- case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
- break;
- case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
- break;
- case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
- break;
- case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
- break;
- case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
- break;
- case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
- break;
- case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
- break;
- case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
- break;
- case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
- break;
- case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
- break;
- case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
- break;
- case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
- break;
- case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
- break;
- case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
- break;
- case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
- break;
- case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
- break;
- case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
- break;
- case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
- break;
- case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
- break;
- case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
- break;
- case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
- break;
- case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
- break;
- case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
- break;
- case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
- break;
- case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
- break;
- case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
- break;
- case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
- break;
- case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
- break;
- case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
- break;
- case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
- break;
- case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
- break;
- case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
- break;
- case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
- break;
- case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
- break;
- case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
- break;
- case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
- break;
- case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
- break;
- case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
- break;
- case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
- break;
- }
-
- return ppc64_elf_howto_table[r];
-};
-
-static reloc_howto_type *
-ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
-{
- unsigned int i;
-
- for (i = 0;
- i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
- i++)
- if (ppc64_elf_howto_raw[i].name != NULL
- && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
- return &ppc64_elf_howto_raw[i];
-
- return NULL;
-}
-
-/* Set the howto pointer for a PowerPC ELF reloc. */
-
-static void
-ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
- Elf_Internal_Rela *dst)
-{
- unsigned int type;
-
- /* Initialize howto table if needed. */
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- ppc_howto_init ();
-
- type = ELF64_R_TYPE (dst->r_info);
- if (type >= (sizeof (ppc64_elf_howto_table)
- / sizeof (ppc64_elf_howto_table[0])))
- {
- (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
- abfd, (int) type);
- type = R_PPC64_NONE;
- }
- cache_ptr->howto = ppc64_elf_howto_table[type];
-}
-
-/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
-
-static bfd_reloc_status_type
-ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- /* Adjust the addend for sign extension of the low 16 bits.
- We won't actually be using the low 16 bits, so trashing them
- doesn't matter. */
- reloc_entry->addend += 0x8000;
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- if (strcmp (symbol->section->name, ".opd") == 0
- && (symbol->section->owner->flags & DYNAMIC) == 0)
- {
- bfd_vma dest = opd_entry_value (symbol->section,
- symbol->value + reloc_entry->addend,
- NULL, NULL, FALSE);
- if (dest != (bfd_vma) -1)
- reloc_entry->addend = dest - (symbol->value
- + symbol->section->output_section->vma
- + symbol->section->output_offset);
- }
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- long insn;
- enum elf_ppc64_reloc_type r_type;
- bfd_size_type octets;
- /* Assume 'at' branch hints. */
- bfd_boolean is_isa_v2 = TRUE;
-
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- octets = reloc_entry->address * bfd_octets_per_byte (abfd);
- insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- insn &= ~(0x01 << 21);
- r_type = reloc_entry->howto->type;
- if (r_type == R_PPC64_ADDR14_BRTAKEN
- || r_type == R_PPC64_REL14_BRTAKEN)
- insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
-
- if (is_isa_v2)
- {
- /* Set 'a' bit. This is 0b00010 in BO field for branch
- on CR(BI) insns (BO == 001at or 011at), and 0b01000
- for branch on CTR insns (BO == 1a00t or 1a01t). */
- if ((insn & (0x14 << 21)) == (0x04 << 21))
- insn |= 0x02 << 21;
- else if ((insn & (0x14 << 21)) == (0x10 << 21))
- insn |= 0x08 << 21;
- else
- goto out;
- }
- else
- {
- bfd_vma target = 0;
- bfd_vma from;
-
- if (!bfd_is_com_section (symbol->section))
- target = symbol->value;
- target += symbol->section->output_section->vma;
- target += symbol->section->output_offset;
- target += reloc_entry->addend;
-
- from = (reloc_entry->address
- + input_section->output_offset
- + input_section->output_section->vma);
-
- /* Invert 'y' bit if not the default. */
- if ((bfd_signed_vma) (target - from) < 0)
- insn ^= 0x01 << 21;
- }
- bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
- out:
- return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-}
-
-static bfd_reloc_status_type
-ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- /* Subtract the symbol section base address. */
- reloc_entry->addend -= symbol->section->output_section->vma;
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- /* Subtract the symbol section base address. */
- reloc_entry->addend -= symbol->section->output_section->vma;
-
- /* Adjust the addend for sign extension of the low 16 bits. */
- reloc_entry->addend += 0x8000;
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- bfd_vma TOCstart;
-
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
- if (TOCstart == 0)
- TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
-
- /* Subtract the TOC base address. */
- reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- bfd_vma TOCstart;
-
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
- if (TOCstart == 0)
- TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
-
- /* Subtract the TOC base address. */
- reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
-
- /* Adjust the addend for sign extension of the low 16 bits. */
- reloc_entry->addend += 0x8000;
- return bfd_reloc_continue;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- bfd_vma TOCstart;
- bfd_size_type octets;
-
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
- if (TOCstart == 0)
- TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
-
- octets = reloc_entry->address * bfd_octets_per_byte (abfd);
- bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
- return bfd_reloc_ok;
-}
-
-static bfd_reloc_status_type
-ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- void *data, asection *input_section,
- bfd *output_bfd, char **error_message)
-{
- /* If this is a relocatable link (output_bfd test tells us), just
- call the generic function. Any adjustment will be done at final
- link time. */
- if (output_bfd != NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- if (error_message != NULL)
- {
- static char buf[60];
- sprintf (buf, "generic linker can't handle %s",
- reloc_entry->howto->name);
- *error_message = buf;
- }
- return bfd_reloc_dangerous;
-}
-
-/* Track GOT entries needed for a given symbol. We might need more
- than one got entry per symbol. */
-struct got_entry
-{
- struct got_entry *next;
-
- /* The symbol addend that we'll be placing in the GOT. */
- bfd_vma addend;
-
- /* Unlike other ELF targets, we use separate GOT entries for the same
- symbol referenced from different input files. This is to support
- automatic multiple TOC/GOT sections, where the TOC base can vary
- from one input file to another. After partitioning into TOC groups
- we merge entries within the group.
-
- Point to the BFD owning this GOT entry. */
- bfd *owner;
-
- /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
- TLS_TPREL or TLS_DTPREL for tls entries. */
- unsigned char tls_type;
-
- /* Non-zero if got.ent points to real entry. */
- unsigned char is_indirect;
-
- /* Reference count until size_dynamic_sections, GOT offset thereafter. */
- union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- struct got_entry *ent;
- } got;
-};
-
-/* The same for PLT. */
-struct plt_entry
-{
- struct plt_entry *next;
-
- bfd_vma addend;
-
- union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- } plt;
-};
-
-struct ppc64_elf_obj_tdata
-{
- struct elf_obj_tdata elf;
-
- /* Shortcuts to dynamic linker sections. */
- asection *got;
- asection *relgot;
-
- /* Used during garbage collection. We attach global symbols defined
- on removed .opd entries to this section so that the sym is removed. */
- asection *deleted_section;
-
- /* TLS local dynamic got entry handling. Support for multiple GOT
- sections means we potentially need one of these for each input bfd. */
- struct got_entry tlsld_got;
-
- union {
- /* A copy of relocs before they are modified for --emit-relocs. */
- Elf_Internal_Rela *relocs;
-
- /* Section contents. */
- bfd_byte *contents;
- } opd;
-
- /* Nonzero if this bfd has small toc/got relocs, ie. that expect
- the reloc to be in the range -32768 to 32767. */
- unsigned int has_small_toc_reloc : 1;
-
- /* Set if toc/got ha relocs detected not using r2, or lo reloc
- instruction not one we handle. */
- unsigned int unexpected_toc_insn : 1;
-};
-
-#define ppc64_elf_tdata(bfd) \
- ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
-
-#define ppc64_tlsld_got(bfd) \
- (&ppc64_elf_tdata (bfd)->tlsld_got)
-
-#define is_ppc64_elf(bfd) \
- (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
- && elf_object_id (bfd) == PPC64_ELF_DATA)
-
-/* Override the generic function because we store some extras. */
-
-static bfd_boolean
-ppc64_elf_mkobject (bfd *abfd)
-{
- return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
- PPC64_ELF_DATA);
-}
-
-/* Fix bad default arch selected for a 64 bit input bfd when the
- default is 32 bit. */
-
-static bfd_boolean
-ppc64_elf_object_p (bfd *abfd)
-{
- if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
- {
- Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
-
- if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
- {
- /* Relies on arch after 32 bit default being 64 bit default. */
- abfd->arch_info = abfd->arch_info->next;
- BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
- }
- }
- return TRUE;
-}
-
-/* Support for core dump NOTE sections. */
-
-static bfd_boolean
-ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
-{
- size_t offset, size;
-
- if (note->descsz != 504)
- return FALSE;
-
- /* pr_cursig */
- elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
-
- /* pr_pid */
- elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
-
- /* pr_reg */
- offset = 112;
- size = 384;
-
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- size, note->descpos + offset);
-}
-
-static bfd_boolean
-ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
-{
- if (note->descsz != 136)
- return FALSE;
-
- elf_tdata (abfd)->core->pid
- = bfd_get_32 (abfd, note->descdata + 24);
- elf_tdata (abfd)->core->program
- = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
- elf_tdata (abfd)->core->command
- = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
-
- return TRUE;
-}
-
-static char *
-ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
- ...)
-{
- switch (note_type)
- {
- default:
- return NULL;
-
- case NT_PRPSINFO:
- {
- char data[136];
- va_list ap;
-
- va_start (ap, note_type);
- memset (data, 0, sizeof (data));
- strncpy (data + 40, va_arg (ap, const char *), 16);
- strncpy (data + 56, va_arg (ap, const char *), 80);
- va_end (ap);
- return elfcore_write_note (abfd, buf, bufsiz,
- "CORE", note_type, data, sizeof (data));
- }
-
- case NT_PRSTATUS:
- {
- char data[504];
- va_list ap;
- long pid;
- int cursig;
- const void *greg;
-
- va_start (ap, note_type);
- memset (data, 0, 112);
- pid = va_arg (ap, long);
- bfd_put_32 (abfd, pid, data + 32);
- cursig = va_arg (ap, int);
- bfd_put_16 (abfd, cursig, data + 12);
- greg = va_arg (ap, const void *);
- memcpy (data + 112, greg, 384);
- memset (data + 496, 0, 8);
- va_end (ap);
- return elfcore_write_note (abfd, buf, bufsiz,
- "CORE", note_type, data, sizeof (data));
- }
- }
-}
-
-/* Add extra PPC sections. */
-
-static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
-{
- { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
- { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
- { NULL, 0, 0, 0, 0 }
-};
-
-enum _ppc64_sec_type {
- sec_normal = 0,
- sec_opd = 1,
- sec_toc = 2
-};
-
-struct _ppc64_elf_section_data
-{
- struct bfd_elf_section_data elf;
-
- union
- {
- /* An array with one entry for each opd function descriptor. */
- struct _opd_sec_data
- {
- /* Points to the function code section for local opd entries. */
- asection **func_sec;
-
- /* After editing .opd, adjust references to opd local syms. */
- long *adjust;
- } opd;
-
- /* An array for toc sections, indexed by offset/8. */
- struct _toc_sec_data
- {
- /* Specifies the relocation symbol index used at a given toc offset. */
- unsigned *symndx;
-
- /* And the relocation addend. */
- bfd_vma *add;
- } toc;
- } u;
-
- enum _ppc64_sec_type sec_type:2;
-
- /* Flag set when small branches are detected. Used to
- select suitable defaults for the stub group size. */
- unsigned int has_14bit_branch:1;
-};
-
-#define ppc64_elf_section_data(sec) \
- ((struct _ppc64_elf_section_data *) elf_section_data (sec))
-
-static bfd_boolean
-ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
-{
- if (!sec->used_by_bfd)
- {
- struct _ppc64_elf_section_data *sdata;
- bfd_size_type amt = sizeof (*sdata);
-
- sdata = bfd_zalloc (abfd, amt);
- if (sdata == NULL)
- return FALSE;
- sec->used_by_bfd = sdata;
- }
-
- return _bfd_elf_new_section_hook (abfd, sec);
-}
-
-static struct _opd_sec_data *
-get_opd_info (asection * sec)
-{
- if (sec != NULL
- && ppc64_elf_section_data (sec) != NULL
- && ppc64_elf_section_data (sec)->sec_type == sec_opd)
- return &ppc64_elf_section_data (sec)->u.opd;
- return NULL;
-}
-
-static inline int
-abiversion (bfd *abfd)
-{
- return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
-}
-
-static inline void
-set_abiversion (bfd *abfd, int ver)
-{
- elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
- elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
-}
-
-/* Parameters for the qsort hook. */
-static bfd_boolean synthetic_relocatable;
-
-/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
-
-static int
-compare_symbols (const void *ap, const void *bp)
-{
- const asymbol *a = * (const asymbol **) ap;
- const asymbol *b = * (const asymbol **) bp;
-
- /* Section symbols first. */
- if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
- return -1;
- if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
- return 1;
-
- /* then .opd symbols. */
- if (strcmp (a->section->name, ".opd") == 0
- && strcmp (b->section->name, ".opd") != 0)
- return -1;
- if (strcmp (a->section->name, ".opd") != 0
- && strcmp (b->section->name, ".opd") == 0)
- return 1;
-
- /* then other code symbols. */
- if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- == (SEC_CODE | SEC_ALLOC)
- && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- != (SEC_CODE | SEC_ALLOC))
- return -1;
-
- if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- != (SEC_CODE | SEC_ALLOC)
- && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- == (SEC_CODE | SEC_ALLOC))
- return 1;
-
- if (synthetic_relocatable)
- {
- if (a->section->id < b->section->id)
- return -1;
-
- if (a->section->id > b->section->id)
- return 1;
- }
-
- if (a->value + a->section->vma < b->value + b->section->vma)
- return -1;
-
- if (a->value + a->section->vma > b->value + b->section->vma)
- return 1;
-
- /* For syms with the same value, prefer strong dynamic global function
- syms over other syms. */
- if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
- return -1;
-
- if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
- return 1;
-
- if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
- return -1;
-
- if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
- return 1;
-
- if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
- return -1;
-
- if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
- return 1;
-
- if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
- return -1;
-
- if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
- return 1;
-
- return 0;
-}
-
-/* Search SYMS for a symbol of the given VALUE. */
-
-static asymbol *
-sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
-{
- long mid;
-
- if (id == -1)
- {
- while (lo < hi)
- {
- mid = (lo + hi) >> 1;
- if (syms[mid]->value + syms[mid]->section->vma < value)
- lo = mid + 1;
- else if (syms[mid]->value + syms[mid]->section->vma > value)
- hi = mid;
- else
- return syms[mid];
- }
- }
- else
- {
- while (lo < hi)
- {
- mid = (lo + hi) >> 1;
- if (syms[mid]->section->id < id)
- lo = mid + 1;
- else if (syms[mid]->section->id > id)
- hi = mid;
- else if (syms[mid]->value < value)
- lo = mid + 1;
- else if (syms[mid]->value > value)
- hi = mid;
- else
- return syms[mid];
- }
- }
- return NULL;
-}
-
-static bfd_boolean
-section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
-{
- bfd_vma vma = *(bfd_vma *) ptr;
- return ((section->flags & SEC_ALLOC) != 0
- && section->vma <= vma
- && vma < section->vma + section->size);
-}
-
-/* Create synthetic symbols, effectively restoring "dot-symbol" function
- entry syms. Also generate @plt symbols for the glink branch table. */
-
-static long
-ppc64_elf_get_synthetic_symtab (bfd *abfd,
- long static_count, asymbol **static_syms,
- long dyn_count, asymbol **dyn_syms,
- asymbol **ret)
-{
- asymbol *s;
- long i;
- long count;
- char *names;
- long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
- asection *opd = NULL;
- bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
- asymbol **syms;
- int abi = abiversion (abfd);
-
- *ret = NULL;
-
- if (abi < 2)
- {
- opd = bfd_get_section_by_name (abfd, ".opd");
- if (opd == NULL && abi == 1)
- return 0;
- }
-
- symcount = static_count;
- if (!relocatable)
- symcount += dyn_count;
- if (symcount == 0)
- return 0;
-
- syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
- if (syms == NULL)
- return -1;
-
- if (!relocatable && static_count != 0 && dyn_count != 0)
- {
- /* Use both symbol tables. */
- memcpy (syms, static_syms, static_count * sizeof (*syms));
- memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
- }
- else if (!relocatable && static_count == 0)
- memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
- else
- memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
-
- synthetic_relocatable = relocatable;
- qsort (syms, symcount, sizeof (*syms), compare_symbols);
-
- if (!relocatable && symcount > 1)
- {
- long j;
- /* Trim duplicate syms, since we may have merged the normal and
- dynamic symbols. Actually, we only care about syms that have
- different values, so trim any with the same value. */
- for (i = 1, j = 1; i < symcount; ++i)
- if (syms[i - 1]->value + syms[i - 1]->section->vma
- != syms[i]->value + syms[i]->section->vma)
- syms[j++] = syms[i];
- symcount = j;
- }
-
- i = 0;
- if (strcmp (syms[i]->section->name, ".opd") == 0)
- ++i;
- codesecsym = i;
-
- for (; i < symcount; ++i)
- if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- != (SEC_CODE | SEC_ALLOC))
- || (syms[i]->flags & BSF_SECTION_SYM) == 0)
- break;
- codesecsymend = i;
-
- for (; i < symcount; ++i)
- if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
- break;
- secsymend = i;
-
- for (; i < symcount; ++i)
- if (strcmp (syms[i]->section->name, ".opd") != 0)
- break;
- opdsymend = i;
-
- for (; i < symcount; ++i)
- if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
- != (SEC_CODE | SEC_ALLOC))
- break;
- symcount = i;
-
- count = 0;
-
- if (relocatable)
- {
- bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
- arelent *r;
- size_t size;
- long relcount;
-
- if (opdsymend == secsymend)
- goto done;
-
- slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
- relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
- if (relcount == 0)
- goto done;
-
- if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
- {
- count = -1;
- goto done;
- }
-
- size = 0;
- for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
- {
- asymbol *sym;
-
- while (r < opd->relocation + relcount
- && r->address < syms[i]->value + opd->vma)
- ++r;
-
- if (r == opd->relocation + relcount)
- break;
-
- if (r->address != syms[i]->value + opd->vma)
- continue;
-
- if (r->howto->type != R_PPC64_ADDR64)
- continue;
-
- sym = *r->sym_ptr_ptr;
- if (!sym_exists_at (syms, opdsymend, symcount,
- sym->section->id, sym->value + r->addend))
- {
- ++count;
- size += sizeof (asymbol);
- size += strlen (syms[i]->name) + 2;
- }
- }
-
- s = *ret = bfd_malloc (size);
- if (s == NULL)
- {
- count = -1;
- goto done;
- }
-
- names = (char *) (s + count);
-
- for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
- {
- asymbol *sym;
-
- while (r < opd->relocation + relcount
- && r->address < syms[i]->value + opd->vma)
- ++r;
-
- if (r == opd->relocation + relcount)
- break;
-
- if (r->address != syms[i]->value + opd->vma)
- continue;
-
- if (r->howto->type != R_PPC64_ADDR64)
- continue;
-
- sym = *r->sym_ptr_ptr;
- if (!sym_exists_at (syms, opdsymend, symcount,
- sym->section->id, sym->value + r->addend))
- {
- size_t len;
-
- *s = *syms[i];
- s->flags |= BSF_SYNTHETIC;
- s->section = sym->section;
- s->value = sym->value + r->addend;
- s->name = names;
- *names++ = '.';
- len = strlen (syms[i]->name);
- memcpy (names, syms[i]->name, len + 1);
- names += len + 1;
- /* Have udata.p point back to the original symbol this
- synthetic symbol was derived from. */
- s->udata.p = syms[i];
- s++;
- }
- }
- }
- else
- {
- bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
- bfd_byte *contents = NULL;
- size_t size;
- long plt_count = 0;
- bfd_vma glink_vma = 0, resolv_vma = 0;
- asection *dynamic, *glink = NULL, *relplt = NULL;
- arelent *p;
-
- if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
- {
- free_contents_and_exit:
- if (contents)
- free (contents);
- count = -1;
- goto done;
- }
-
- size = 0;
- for (i = secsymend; i < opdsymend; ++i)
- {
- bfd_vma ent;
-
- /* Ignore bogus symbols. */
- if (syms[i]->value > opd->size - 8)
- continue;
-
- ent = bfd_get_64 (abfd, contents + syms[i]->value);
- if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
- {
- ++count;
- size += sizeof (asymbol);
- size += strlen (syms[i]->name) + 2;
- }
- }
-
- /* Get start of .glink stubs from DT_PPC64_GLINK. */
- if (dyn_count != 0
- && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
- {
- bfd_byte *dynbuf, *extdyn, *extdynend;
- size_t extdynsize;
- void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
-
- if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
- goto free_contents_and_exit;
-
- extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
- swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
-
- extdyn = dynbuf;
- extdynend = extdyn + dynamic->size;
- for (; extdyn < extdynend; extdyn += extdynsize)
- {
- Elf_Internal_Dyn dyn;
- (*swap_dyn_in) (abfd, extdyn, &dyn);
-
- if (dyn.d_tag == DT_NULL)
- break;
-
- if (dyn.d_tag == DT_PPC64_GLINK)
- {
- /* The first glink stub starts at offset 32; see
- comment in ppc64_elf_finish_dynamic_sections. */
- glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
- /* The .glink section usually does not survive the final
- link; search for the section (usually .text) where the
- glink stubs now reside. */
- glink = bfd_sections_find_if (abfd, section_covers_vma,
- &glink_vma);
- break;
- }
- }
-
- free (dynbuf);
- }
-
- if (glink != NULL)
- {
- /* Determine __glink trampoline by reading the relative branch
- from the first glink stub. */
- bfd_byte buf[4];
- unsigned int off = 0;
-
- while (bfd_get_section_contents (abfd, glink, buf,
- glink_vma + off - glink->vma, 4))
- {
- unsigned int insn = bfd_get_32 (abfd, buf);
- insn ^= B_DOT;
- if ((insn & ~0x3fffffc) == 0)
- {
- resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
- break;
- }
- off += 4;
- if (off > 4)
- break;
- }
-
- if (resolv_vma)
- size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
-
- relplt = bfd_get_section_by_name (abfd, ".rela.plt");
- if (relplt != NULL)
- {
- slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
- if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
- goto free_contents_and_exit;
-
- plt_count = relplt->size / sizeof (Elf64_External_Rela);
- size += plt_count * sizeof (asymbol);
-
- p = relplt->relocation;
- for (i = 0; i < plt_count; i++, p++)
- {
- size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
- if (p->addend != 0)
- size += sizeof ("+0x") - 1 + 16;
- }
- }
- }
-
- s = *ret = bfd_malloc (size);
- if (s == NULL)
- goto free_contents_and_exit;
-
- names = (char *) (s + count + plt_count + (resolv_vma != 0));
-
- for (i = secsymend; i < opdsymend; ++i)
- {
- bfd_vma ent;
-
- if (syms[i]->value > opd->size - 8)
- continue;
-
- ent = bfd_get_64 (abfd, contents + syms[i]->value);
- if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
- {
- long lo, hi;
- size_t len;
- asection *sec = abfd->sections;
-
- *s = *syms[i];
- lo = codesecsym;
- hi = codesecsymend;
- while (lo < hi)
- {
- long mid = (lo + hi) >> 1;
- if (syms[mid]->section->vma < ent)
- lo = mid + 1;
- else if (syms[mid]->section->vma > ent)
- hi = mid;
- else
- {
- sec = syms[mid]->section;
- break;
- }
- }
-
- if (lo >= hi && lo > codesecsym)
- sec = syms[lo - 1]->section;
-
- for (; sec != NULL; sec = sec->next)
- {
- if (sec->vma > ent)
- break;
- /* SEC_LOAD may not be set if SEC is from a separate debug
- info file. */
- if ((sec->flags & SEC_ALLOC) == 0)
- break;
- if ((sec->flags & SEC_CODE) != 0)
- s->section = sec;
- }
- s->flags |= BSF_SYNTHETIC;
- s->value = ent - s->section->vma;
- s->name = names;
- *names++ = '.';
- len = strlen (syms[i]->name);
- memcpy (names, syms[i]->name, len + 1);
- names += len + 1;
- /* Have udata.p point back to the original symbol this
- synthetic symbol was derived from. */
- s->udata.p = syms[i];
- s++;
- }
- }
- free (contents);
-
- if (glink != NULL && relplt != NULL)
- {
- if (resolv_vma)
- {
- /* Add a symbol for the main glink trampoline. */
- memset (s, 0, sizeof *s);
- s->the_bfd = abfd;
- s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
- s->section = glink;
- s->value = resolv_vma - glink->vma;
- s->name = names;
- memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
- names += sizeof ("__glink_PLTresolve");
- s++;
- count++;
- }
-
- /* FIXME: It would be very much nicer to put sym@plt on the
- stub rather than on the glink branch table entry. The
- objdump disassembler would then use a sensible symbol
- name on plt calls. The difficulty in doing so is
- a) finding the stubs, and,
- b) matching stubs against plt entries, and,
- c) there can be multiple stubs for a given plt entry.
-
- Solving (a) could be done by code scanning, but older
- ppc64 binaries used different stubs to current code.
- (b) is the tricky one since you need to known the toc
- pointer for at least one function that uses a pic stub to
- be able to calculate the plt address referenced.
- (c) means gdb would need to set multiple breakpoints (or
- find the glink branch itself) when setting breakpoints
- for pending shared library loads. */
- p = relplt->relocation;
- for (i = 0; i < plt_count; i++, p++)
- {
- size_t len;
-
- *s = **p->sym_ptr_ptr;
- /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
- we are defining a symbol, ensure one of them is set. */
- if ((s->flags & BSF_LOCAL) == 0)
- s->flags |= BSF_GLOBAL;
- s->flags |= BSF_SYNTHETIC;
- s->section = glink;
- s->value = glink_vma - glink->vma;
- s->name = names;
- s->udata.p = NULL;
- len = strlen ((*p->sym_ptr_ptr)->name);
- memcpy (names, (*p->sym_ptr_ptr)->name, len);
- names += len;
- if (p->addend != 0)
- {
- memcpy (names, "+0x", sizeof ("+0x") - 1);
- names += sizeof ("+0x") - 1;
- bfd_sprintf_vma (abfd, names, p->addend);
- names += strlen (names);
- }
- memcpy (names, "@plt", sizeof ("@plt"));
- names += sizeof ("@plt");
- s++;
- if (abi < 2)
- {
- glink_vma += 8;
- if (i >= 0x8000)
- glink_vma += 4;
- }
- else
- glink_vma += 4;
- }
- count += plt_count;
- }
- }
-
- done:
- free (syms);
- return count;
-}
-
-/* The following functions are specific to the ELF linker, while
- functions above are used generally. Those named ppc64_elf_* are
- called by the main ELF linker code. They appear in this file more
- or less in the order in which they are called. eg.
- ppc64_elf_check_relocs is called early in the link process,
- ppc64_elf_finish_dynamic_sections is one of the last functions
- called.
-
- PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
- functions have both a function code symbol and a function descriptor
- symbol. A call to foo in a relocatable object file looks like:
-
- . .text
- . x:
- . bl .foo
- . nop
-
- The function definition in another object file might be:
-
- . .section .opd
- . foo: .quad .foo
- . .quad .TOC.@tocbase
- . .quad 0
- .
- . .text
- . .foo: blr
-
- When the linker resolves the call during a static link, the branch
- unsurprisingly just goes to .foo and the .opd information is unused.
- If the function definition is in a shared library, things are a little
- different: The call goes via a plt call stub, the opd information gets
- copied to the plt, and the linker patches the nop.
-
- . x:
- . bl .foo_stub
- . ld 2,40(1)
- .
- .
- . .foo_stub:
- . std 2,40(1) # in practice, the call stub
- . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
- . addi 11,11,Lfoo@toc@l # this is the general idea
- . ld 12,0(11)
- . ld 2,8(11)
- . mtctr 12
- . ld 11,16(11)
- . bctr
- .
- . .section .plt
- . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
-
- The "reloc ()" notation is supposed to indicate that the linker emits
- an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
- copying.
-
- What are the difficulties here? Well, firstly, the relocations
- examined by the linker in check_relocs are against the function code
- sym .foo, while the dynamic relocation in the plt is emitted against
- the function descriptor symbol, foo. Somewhere along the line, we need
- to carefully copy dynamic link information from one symbol to the other.
- Secondly, the generic part of the elf linker will make .foo a dynamic
- symbol as is normal for most other backends. We need foo dynamic
- instead, at least for an application final link. However, when
- creating a shared library containing foo, we need to have both symbols
- dynamic so that references to .foo are satisfied during the early
- stages of linking. Otherwise the linker might decide to pull in a
- definition from some other object, eg. a static library.
-
- Update: As of August 2004, we support a new convention. Function
- calls may use the function descriptor symbol, ie. "bl foo". This
- behaves exactly as "bl .foo". */
-
-/* Of those relocs that might be copied as dynamic relocs, this function
- selects those that must be copied when linking a shared library,
- even when the symbol is local. */
-
-static int
-must_be_dyn_reloc (struct bfd_link_info *info,
- enum elf_ppc64_reloc_type r_type)
-{
- switch (r_type)
- {
- default:
- return 1;
-
- case R_PPC64_REL32:
- case R_PPC64_REL64:
- case R_PPC64_REL30:
- return 0;
-
- case R_PPC64_TPREL16:
- case R_PPC64_TPREL16_LO:
- case R_PPC64_TPREL16_HI:
- case R_PPC64_TPREL16_HA:
- case R_PPC64_TPREL16_DS:
- case R_PPC64_TPREL16_LO_DS:
- case R_PPC64_TPREL16_HIGH:
- case R_PPC64_TPREL16_HIGHA:
- case R_PPC64_TPREL16_HIGHER:
- case R_PPC64_TPREL16_HIGHERA:
- case R_PPC64_TPREL16_HIGHEST:
- case R_PPC64_TPREL16_HIGHESTA:
- case R_PPC64_TPREL64:
- return !info->executable;
- }
-}
-
-/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
- copying dynamic variables from a shared lib into an app's dynbss
- section, and instead use a dynamic relocation to point into the
- shared lib. With code that gcc generates, it's vital that this be
- enabled; In the PowerPC64 ABI, the address of a function is actually
- the address of a function descriptor, which resides in the .opd
- section. gcc uses the descriptor directly rather than going via the
- GOT as some other ABI's do, which means that initialized function
- pointers must reference the descriptor. Thus, a function pointer
- initialized to the address of a function in a shared library will
- either require a copy reloc, or a dynamic reloc. Using a copy reloc
- redefines the function descriptor symbol to point to the copy. This
- presents a problem as a plt entry for that function is also
- initialized from the function descriptor symbol and the copy reloc
- may not be initialized first. */
-#define ELIMINATE_COPY_RELOCS 1
-
-/* Section name for stubs is the associated section name plus this
- string. */
-#define STUB_SUFFIX ".stub"
-
-/* Linker stubs.
- ppc_stub_long_branch:
- Used when a 14 bit branch (or even a 24 bit branch) can't reach its
- destination, but a 24 bit branch in a stub section will reach.
- . b dest
-
- ppc_stub_plt_branch:
- Similar to the above, but a 24 bit branch in the stub section won't
- reach its destination.
- . addis %r11,%r2,xxx@toc@ha
- . ld %r12,xxx@toc@l(%r11)
- . mtctr %r12
- . bctr
-
- ppc_stub_plt_call:
- Used to call a function in a shared library. If it so happens that
- the plt entry referenced crosses a 64k boundary, then an extra
- "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
- . std %r2,40(%r1)
- . addis %r11,%r2,xxx@toc@ha
- . ld %r12,xxx+0@toc@l(%r11)
- . mtctr %r12
- . ld %r2,xxx+8@toc@l(%r11)
- . ld %r11,xxx+16@toc@l(%r11)
- . bctr
-
- ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
- code to adjust the value and save r2 to support multiple toc sections.
- A ppc_stub_long_branch with an r2 offset looks like:
- . std %r2,40(%r1)
- . addis %r2,%r2,off@ha
- . addi %r2,%r2,off@l
- . b dest
-
- A ppc_stub_plt_branch with an r2 offset looks like:
- . std %r2,40(%r1)
- . addis %r11,%r2,xxx@toc@ha
- . ld %r12,xxx@toc@l(%r11)
- . addis %r2,%r2,off@ha
- . addi %r2,%r2,off@l
- . mtctr %r12
- . bctr
-
- In cases where the "addis" instruction would add zero, the "addis" is
- omitted and following instructions modified slightly in some cases.
-*/
-
-enum ppc_stub_type {
- ppc_stub_none,
- ppc_stub_long_branch,
- ppc_stub_long_branch_r2off,
- ppc_stub_plt_branch,
- ppc_stub_plt_branch_r2off,
- ppc_stub_plt_call,
- ppc_stub_plt_call_r2save
-};
-
-struct ppc_stub_hash_entry {
-
- /* Base hash table entry structure. */
- struct bfd_hash_entry root;
-
- enum ppc_stub_type stub_type;
-
- /* The stub section. */
- asection *stub_sec;
-
- /* Offset within stub_sec of the beginning of this stub. */
- bfd_vma stub_offset;
-
- /* Given the symbol's value and its section we can determine its final
- value when building the stubs (so the stub knows where to jump. */
- bfd_vma target_value;
- asection *target_section;
-
- /* The symbol table entry, if any, that this was derived from. */
- struct ppc_link_hash_entry *h;
- struct plt_entry *plt_ent;
-
- /* Where this stub is being called from, or, in the case of combined
- stub sections, the first input section in the group. */
- asection *id_sec;
-
- /* Symbol st_other. */
- unsigned char other;
-};
-
-struct ppc_branch_hash_entry {
-
- /* Base hash table entry structure. */
- struct bfd_hash_entry root;
-
- /* Offset within branch lookup table. */
- unsigned int offset;
-
- /* Generation marker. */
- unsigned int iter;
-};
-
-/* Used to track dynamic relocations for local symbols. */
-struct ppc_dyn_relocs
-{
- struct ppc_dyn_relocs *next;
-
- /* The input section of the reloc. */
- asection *sec;
-
- /* Total number of relocs copied for the input section. */
- unsigned int count : 31;
-
- /* Whether this entry is for STT_GNU_IFUNC symbols. */
- unsigned int ifunc : 1;
-};
-
-struct ppc_link_hash_entry
-{
- struct elf_link_hash_entry elf;
-
- union {
- /* A pointer to the most recently used stub hash entry against this
- symbol. */
- struct ppc_stub_hash_entry *stub_cache;
-
- /* A pointer to the next symbol starting with a '.' */
- struct ppc_link_hash_entry *next_dot_sym;
- } u;
-
- /* Track dynamic relocs copied for this symbol. */
- struct elf_dyn_relocs *dyn_relocs;
-
- /* Link between function code and descriptor symbols. */
- struct ppc_link_hash_entry *oh;
-
- /* Flag function code and descriptor symbols. */
- unsigned int is_func:1;
- unsigned int is_func_descriptor:1;
- unsigned int fake:1;
-
- /* Whether global opd/toc sym has been adjusted or not.
- After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
- should be set for all globals defined in any opd/toc section. */
- unsigned int adjust_done:1;
-
- /* Set if we twiddled this symbol to weak at some stage. */
- unsigned int was_undefined:1;
-
- /* Contexts in which symbol is used in the GOT (or TOC).
- TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
- corresponding relocs are encountered during check_relocs.
- tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
- indicate the corresponding GOT entry type is not needed.
- tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
- a TPREL one. We use a separate flag rather than setting TPREL
- just for convenience in distinguishing the two cases. */
-#define TLS_GD 1 /* GD reloc. */
-#define TLS_LD 2 /* LD reloc. */
-#define TLS_TPREL 4 /* TPREL reloc, => IE. */
-#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
-#define TLS_TLS 16 /* Any TLS reloc. */
-#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
-#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
-#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
- unsigned char tls_mask;
-};
-
-/* ppc64 ELF linker hash table. */
-
-struct ppc_link_hash_table
-{
- struct elf_link_hash_table elf;
-
- /* The stub hash table. */
- struct bfd_hash_table stub_hash_table;
-
- /* Another hash table for plt_branch stubs. */
- struct bfd_hash_table branch_hash_table;
-
- /* Hash table for function prologue tocsave. */
- htab_t tocsave_htab;
-
- /* Linker stub bfd. */
- bfd *stub_bfd;
-
- /* Linker call-backs. */
- asection * (*add_stub_section) (const char *, asection *);
- void (*layout_sections_again) (void);
-
- /* Array to keep track of which stub sections have been created, and
- information on stub grouping. */
- struct map_stub {
- /* This is the section to which stubs in the group will be attached. */
- asection *link_sec;
- /* The stub section. */
- asection *stub_sec;
- /* Along with elf_gp, specifies the TOC pointer used in this group. */
- bfd_vma toc_off;
- } *stub_group;
-
- /* Temp used when calculating TOC pointers. */
- bfd_vma toc_curr;
- bfd *toc_bfd;
- asection *toc_first_sec;
-
- /* Highest input section id. */
- int top_id;
-
- /* Highest output section index. */
- int top_index;
-
- /* Used when adding symbols. */
- struct ppc_link_hash_entry *dot_syms;
-
- /* List of input sections for each output section. */
- asection **input_list;
-
- /* Shortcuts to get to dynamic linker sections. */
- asection *dynbss;
- asection *relbss;
- asection *glink;
- asection *sfpr;
- asection *brlt;
- asection *relbrlt;
- asection *glink_eh_frame;
-
- /* Shortcut to .__tls_get_addr and __tls_get_addr. */
- struct ppc_link_hash_entry *tls_get_addr;
- struct ppc_link_hash_entry *tls_get_addr_fd;
-
- /* The size of reliplt used by got entry relocs. */
- bfd_size_type got_reli_size;
-
- /* Statistics. */
- unsigned long stub_count[ppc_stub_plt_call_r2save];
-
- /* Number of stubs against global syms. */
- unsigned long stub_globals;
-
- /* Alignment of PLT call stubs. */
- unsigned int plt_stub_align:4;
-
- /* Set if we're linking code with function descriptors. */
- unsigned int opd_abi:1;
-
- /* Set if PLT call stubs should load r11. */
- unsigned int plt_static_chain:1;
-
- /* Set if PLT call stubs need a read-read barrier. */
- unsigned int plt_thread_safe:1;
-
- /* Set if we should emit symbols for stubs. */
- unsigned int emit_stub_syms:1;
-
- /* Set if __tls_get_addr optimization should not be done. */
- unsigned int no_tls_get_addr_opt:1;
-
- /* Support for multiple toc sections. */
- unsigned int do_multi_toc:1;
- unsigned int multi_toc_needed:1;
- unsigned int second_toc_pass:1;
- unsigned int do_toc_opt:1;
-
- /* Set on error. */
- unsigned int stub_error:1;
-
- /* Temp used by ppc64_elf_process_dot_syms. */
- unsigned int twiddled_syms:1;
-
- /* Incremented every time we size stubs. */
- unsigned int stub_iteration;
-
- /* Small local sym cache. */
- struct sym_cache sym_cache;
-};
-
-/* Rename some of the generic section flags to better document how they
- are used here. */
-
-/* Nonzero if this section has TLS related relocations. */
-#define has_tls_reloc sec_flg0
-
-/* Nonzero if this section has a call to __tls_get_addr. */
-#define has_tls_get_addr_call sec_flg1
-
-/* Nonzero if this section has any toc or got relocs. */
-#define has_toc_reloc sec_flg2
-
-/* Nonzero if this section has a call to another section that uses
- the toc or got. */
-#define makes_toc_func_call sec_flg3
-
-/* Recursion protection when determining above flag. */
-#define call_check_in_progress sec_flg4
-#define call_check_done sec_flg5
-
-/* Get the ppc64 ELF linker hash table from a link_info structure. */
-
-#define ppc_hash_table(p) \
- (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
- == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
-
-#define ppc_stub_hash_lookup(table, string, create, copy) \
- ((struct ppc_stub_hash_entry *) \
- bfd_hash_lookup ((table), (string), (create), (copy)))
-
-#define ppc_branch_hash_lookup(table, string, create, copy) \
- ((struct ppc_branch_hash_entry *) \
- bfd_hash_lookup ((table), (string), (create), (copy)))
-
-/* Create an entry in the stub hash table. */
-
-static struct bfd_hash_entry *
-stub_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
- if (entry == NULL)
- return entry;
- }
-
- /* Call the allocation method of the superclass. */
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct ppc_stub_hash_entry *eh;
-
- /* Initialize the local fields. */
- eh = (struct ppc_stub_hash_entry *) entry;
- eh->stub_type = ppc_stub_none;
- eh->stub_sec = NULL;
- eh->stub_offset = 0;
- eh->target_value = 0;
- eh->target_section = NULL;
- eh->h = NULL;
- eh->plt_ent = NULL;
- eh->id_sec = NULL;
- eh->other = 0;
- }
-
- return entry;
-}
-
-/* Create an entry in the branch hash table. */
-
-static struct bfd_hash_entry *
-branch_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
- if (entry == NULL)
- return entry;
- }
-
- /* Call the allocation method of the superclass. */
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct ppc_branch_hash_entry *eh;
-
- /* Initialize the local fields. */
- eh = (struct ppc_branch_hash_entry *) entry;
- eh->offset = 0;
- eh->iter = 0;
- }
-
- return entry;
-}
-
-/* Create an entry in a ppc64 ELF linker hash table. */
-
-static struct bfd_hash_entry *
-link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
-{
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
- if (entry == NULL)
- return entry;
- }
-
- /* Call the allocation method of the superclass. */
- entry = _bfd_elf_link_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
-
- memset (&eh->u.stub_cache, 0,
- (sizeof (struct ppc_link_hash_entry)
- - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
-
- /* When making function calls, old ABI code references function entry
- points (dot symbols), while new ABI code references the function
- descriptor symbol. We need to make any combination of reference and
- definition work together, without breaking archive linking.
-
- For a defined function "foo" and an undefined call to "bar":
- An old object defines "foo" and ".foo", references ".bar" (possibly
- "bar" too).
- A new object defines "foo" and references "bar".
-
- A new object thus has no problem with its undefined symbols being
- satisfied by definitions in an old object. On the other hand, the
- old object won't have ".bar" satisfied by a new object.
-
- Keep a list of newly added dot-symbols. */
-
- if (string[0] == '.')
- {
- struct ppc_link_hash_table *htab;
-
- htab = (struct ppc_link_hash_table *) table;
- eh->u.next_dot_sym = htab->dot_syms;
- htab->dot_syms = eh;
- }
- }
-
- return entry;
-}
-
-struct tocsave_entry {
- asection *sec;
- bfd_vma offset;
-};
-
-static hashval_t
-tocsave_htab_hash (const void *p)
-{
- const struct tocsave_entry *e = (const struct tocsave_entry *) p;
- return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
-}
-
-static int
-tocsave_htab_eq (const void *p1, const void *p2)
-{
- const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
- const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
- return e1->sec == e2->sec && e1->offset == e2->offset;
-}
-
-/* Create a ppc64 ELF linker hash table. */
-
-static struct bfd_link_hash_table *
-ppc64_elf_link_hash_table_create (bfd *abfd)
-{
- struct ppc_link_hash_table *htab;
- bfd_size_type amt = sizeof (struct ppc_link_hash_table);
-
- htab = bfd_zmalloc (amt);
- if (htab == NULL)
- return NULL;
-
- if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
- sizeof (struct ppc_link_hash_entry),
- PPC64_ELF_DATA))
- {
- free (htab);
- return NULL;
- }
-
- /* Init the stub hash table too. */
- if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
- sizeof (struct ppc_stub_hash_entry)))
- return NULL;
-
- /* And the branch hash table. */
- if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
- sizeof (struct ppc_branch_hash_entry)))
- return NULL;
-
- htab->tocsave_htab = htab_try_create (1024,
- tocsave_htab_hash,
- tocsave_htab_eq,
- NULL);
- if (htab->tocsave_htab == NULL)
- return NULL;
-
- /* Initializing two fields of the union is just cosmetic. We really
- only care about glist, but when compiled on a 32-bit host the
- bfd_vma fields are larger. Setting the bfd_vma to zero makes
- debugger inspection of these fields look nicer. */
- htab->elf.init_got_refcount.refcount = 0;
- htab->elf.init_got_refcount.glist = NULL;
- htab->elf.init_plt_refcount.refcount = 0;
- htab->elf.init_plt_refcount.glist = NULL;
- htab->elf.init_got_offset.offset = 0;
- htab->elf.init_got_offset.glist = NULL;
- htab->elf.init_plt_offset.offset = 0;
- htab->elf.init_plt_offset.glist = NULL;
-
- return &htab->elf.root;
-}
-
-/* Free the derived linker hash table. */
-
-static void
-ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
-{
- struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
-
- bfd_hash_table_free (&htab->stub_hash_table);
- bfd_hash_table_free (&htab->branch_hash_table);
- if (htab->tocsave_htab)
- htab_delete (htab->tocsave_htab);
- _bfd_elf_link_hash_table_free (hash);
-}
-
-/* Create sections for linker generated code. */
-
-static bfd_boolean
-create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- flagword flags;
-
- htab = ppc_hash_table (info);
-
- /* Create .sfpr for code to save and restore fp regs. */
- flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
- flags);
- if (htab->sfpr == NULL
- || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
- return FALSE;
-
- /* Create .glink for lazy dynamic linking support. */
- htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
- flags);
- if (htab->glink == NULL
- || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
- return FALSE;
-
- if (!info->no_ld_generated_unwind_info)
- {
- flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
- ".eh_frame",
- flags);
- if (htab->glink_eh_frame == NULL
- || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
- return FALSE;
- }
-
- flags = SEC_ALLOC | SEC_LINKER_CREATED;
- htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
- if (htab->elf.iplt == NULL
- || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
- return FALSE;
-
- flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->elf.irelplt
- = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
- if (htab->elf.irelplt == NULL
- || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
- return FALSE;
-
- /* Create branch lookup table for plt_branch stubs. */
- flags = (SEC_ALLOC | SEC_LOAD
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
- flags);
- if (htab->brlt == NULL
- || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
- return FALSE;
-
- if (!info->shared)
- return TRUE;
-
- flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
- | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
- ".rela.branch_lt",
- flags);
- if (htab->relbrlt == NULL
- || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
- return FALSE;
-
- return TRUE;
-}
-
-/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
-
-bfd_boolean
-ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
-
- elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
-
-/* Always hook our dynamic sections into the first bfd, which is the
- linker created stub bfd. This ensures that the GOT header is at
- the start of the output TOC section. */
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
- htab->stub_bfd = abfd;
- htab->elf.dynobj = abfd;
-
- if (info->relocatable)
- return TRUE;
-
- return create_linkage_sections (htab->elf.dynobj, info);
-}
-
-/* Build a name for an entry in the stub hash table. */
-
-static char *
-ppc_stub_name (const asection *input_section,
- const asection *sym_sec,
- const struct ppc_link_hash_entry *h,
- const Elf_Internal_Rela *rel)
-{
- char *stub_name;
- ssize_t len;
-
- /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
- offsets from a sym as a branch target? In fact, we could
- probably assume the addend is always zero. */
- BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
-
- if (h)
- {
- len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name == NULL)
- return stub_name;
-
- len = sprintf (stub_name, "%08x.%s+%x",
- input_section->id & 0xffffffff,
- h->elf.root.root.string,
- (int) rel->r_addend & 0xffffffff);
- }
- else
- {
- len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name == NULL)
- return stub_name;
-
- len = sprintf (stub_name, "%08x.%x:%x+%x",
- input_section->id & 0xffffffff,
- sym_sec->id & 0xffffffff,
- (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
- (int) rel->r_addend & 0xffffffff);
- }
- if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
- stub_name[len - 2] = 0;
- return stub_name;
-}
-
-/* Look up an entry in the stub hash. Stub entries are cached because
- creating the stub name takes a bit of time. */
-
-static struct ppc_stub_hash_entry *
-ppc_get_stub_entry (const asection *input_section,
- const asection *sym_sec,
- struct ppc_link_hash_entry *h,
- const Elf_Internal_Rela *rel,
- struct ppc_link_hash_table *htab)
-{
- struct ppc_stub_hash_entry *stub_entry;
- const asection *id_sec;
-
- /* If this input section is part of a group of sections sharing one
- stub section, then use the id of the first section in the group.
- Stub names need to include a section id, as there may well be
- more than one stub used to reach say, printf, and we need to
- distinguish between them. */
- id_sec = htab->stub_group[input_section->id].link_sec;
-
- if (h != NULL && h->u.stub_cache != NULL
- && h->u.stub_cache->h == h
- && h->u.stub_cache->id_sec == id_sec)
- {
- stub_entry = h->u.stub_cache;
- }
- else
- {
- char *stub_name;
-
- stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
- if (stub_name == NULL)
- return NULL;
-
- stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
- stub_name, FALSE, FALSE);
- if (h != NULL)
- h->u.stub_cache = stub_entry;
-
- free (stub_name);
- }
-
- return stub_entry;
-}
-
-/* Add a new stub entry to the stub hash. Not all fields of the new
- stub entry are initialised. */
-
-static struct ppc_stub_hash_entry *
-ppc_add_stub (const char *stub_name,
- asection *section,
- struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- asection *link_sec;
- asection *stub_sec;
- struct ppc_stub_hash_entry *stub_entry;
-
- link_sec = htab->stub_group[section->id].link_sec;
- stub_sec = htab->stub_group[section->id].stub_sec;
- if (stub_sec == NULL)
- {
- stub_sec = htab->stub_group[link_sec->id].stub_sec;
- if (stub_sec == NULL)
- {
- size_t namelen;
- bfd_size_type len;
- char *s_name;
-
- namelen = strlen (link_sec->name);
- len = namelen + sizeof (STUB_SUFFIX);
- s_name = bfd_alloc (htab->stub_bfd, len);
- if (s_name == NULL)
- return NULL;
-
- memcpy (s_name, link_sec->name, namelen);
- memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
- stub_sec = (*htab->add_stub_section) (s_name, link_sec);
- if (stub_sec == NULL)
- return NULL;
- htab->stub_group[link_sec->id].stub_sec = stub_sec;
- }
- htab->stub_group[section->id].stub_sec = stub_sec;
- }
-
- /* Enter this entry into the linker stub hash table. */
- stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
- TRUE, FALSE);
- if (stub_entry == NULL)
- {
- info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
- section->owner, stub_name);
- return NULL;
- }
-
- stub_entry->stub_sec = stub_sec;
- stub_entry->stub_offset = 0;
- stub_entry->id_sec = link_sec;
- return stub_entry;
-}
-
-/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
- not already done. */
-
-static bfd_boolean
-create_got_section (bfd *abfd, struct bfd_link_info *info)
-{
- asection *got, *relgot;
- flagword flags;
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (!is_ppc64_elf (abfd))
- return FALSE;
- if (htab == NULL)
- return FALSE;
-
- if (!htab->elf.sgot
- && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
- return FALSE;
-
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
-
- got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
- if (!got
- || !bfd_set_section_alignment (abfd, got, 3))
- return FALSE;
-
- relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
- flags | SEC_READONLY);
- if (!relgot
- || ! bfd_set_section_alignment (abfd, relgot, 3))
- return FALSE;
-
- ppc64_elf_tdata (abfd)->got = got;
- ppc64_elf_tdata (abfd)->relgot = relgot;
- return TRUE;
-}
-
-/* Create the dynamic sections, and set up shortcuts. */
-
-static bfd_boolean
-ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
-
- if (!_bfd_elf_create_dynamic_sections (dynobj, info))
- return FALSE;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!info->shared)
- htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
-
- if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
- || (!info->shared && !htab->relbss))
- abort ();
-
- return TRUE;
-}
-
-/* Follow indirect and warning symbol links. */
-
-static inline struct bfd_link_hash_entry *
-follow_link (struct bfd_link_hash_entry *h)
-{
- while (h->type == bfd_link_hash_indirect
- || h->type == bfd_link_hash_warning)
- h = h->u.i.link;
- return h;
-}
-
-static inline struct elf_link_hash_entry *
-elf_follow_link (struct elf_link_hash_entry *h)
-{
- return (struct elf_link_hash_entry *) follow_link (&h->root);
-}
-
-static inline struct ppc_link_hash_entry *
-ppc_follow_link (struct ppc_link_hash_entry *h)
-{
- return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
-}
-
-/* Merge PLT info on FROM with that on TO. */
-
-static void
-move_plt_plist (struct ppc_link_hash_entry *from,
- struct ppc_link_hash_entry *to)
-{
- if (from->elf.plt.plist != NULL)
- {
- if (to->elf.plt.plist != NULL)
- {
- struct plt_entry **entp;
- struct plt_entry *ent;
-
- for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
- {
- struct plt_entry *dent;
-
- for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
- if (dent->addend == ent->addend)
- {
- dent->plt.refcount += ent->plt.refcount;
- *entp = ent->next;
- break;
- }
- if (dent == NULL)
- entp = &ent->next;
- }
- *entp = to->elf.plt.plist;
- }
-
- to->elf.plt.plist = from->elf.plt.plist;
- from->elf.plt.plist = NULL;
- }
-}
-
-/* Copy the extra info we tack onto an elf_link_hash_entry. */
-
-static void
-ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
-{
- struct ppc_link_hash_entry *edir, *eind;
-
- edir = (struct ppc_link_hash_entry *) dir;
- eind = (struct ppc_link_hash_entry *) ind;
-
- edir->is_func |= eind->is_func;
- edir->is_func_descriptor |= eind->is_func_descriptor;
- edir->tls_mask |= eind->tls_mask;
- if (eind->oh != NULL)
- edir->oh = ppc_follow_link (eind->oh);
-
- /* If called to transfer flags for a weakdef during processing
- of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
- We clear it ourselves for ELIMINATE_COPY_RELOCS. */
- if (!(ELIMINATE_COPY_RELOCS
- && eind->elf.root.type != bfd_link_hash_indirect
- && edir->elf.dynamic_adjusted))
- edir->elf.non_got_ref |= eind->elf.non_got_ref;
-
- edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
- edir->elf.ref_regular |= eind->elf.ref_regular;
- edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
- edir->elf.needs_plt |= eind->elf.needs_plt;
- edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
-
- /* Copy over any dynamic relocs we may have on the indirect sym. */
- if (eind->dyn_relocs != NULL)
- {
- if (edir->dyn_relocs != NULL)
- {
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
- /* Add reloc counts against the indirect sym to the direct sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
- {
- struct elf_dyn_relocs *q;
-
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->pc_count += p->pc_count;
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
- }
-
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
-
- /* If we were called to copy over info for a weak sym, that's all.
- You might think dyn_relocs need not be copied over; After all,
- both syms will be dynamic or both non-dynamic so we're just
- moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
- code in ppc64_elf_adjust_dynamic_symbol needs to check for
- dyn_relocs in read-only sections, and it does so on what is the
- DIR sym here. */
- if (eind->elf.root.type != bfd_link_hash_indirect)
- return;
-
- /* Copy over got entries that we may have already seen to the
- symbol which just became indirect. */
- if (eind->elf.got.glist != NULL)
- {
- if (edir->elf.got.glist != NULL)
- {
- struct got_entry **entp;
- struct got_entry *ent;
-
- for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
- {
- struct got_entry *dent;
-
- for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
- if (dent->addend == ent->addend
- && dent->owner == ent->owner
- && dent->tls_type == ent->tls_type)
- {
- dent->got.refcount += ent->got.refcount;
- *entp = ent->next;
- break;
- }
- if (dent == NULL)
- entp = &ent->next;
- }
- *entp = edir->elf.got.glist;
- }
-
- edir->elf.got.glist = eind->elf.got.glist;
- eind->elf.got.glist = NULL;
- }
-
- /* And plt entries. */
- move_plt_plist (eind, edir);
-
- if (eind->elf.dynindx != -1)
- {
- if (edir->elf.dynindx != -1)
- _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
- edir->elf.dynstr_index);
- edir->elf.dynindx = eind->elf.dynindx;
- edir->elf.dynstr_index = eind->elf.dynstr_index;
- eind->elf.dynindx = -1;
- eind->elf.dynstr_index = 0;
- }
-}
-
-/* Find the function descriptor hash entry from the given function code
- hash entry FH. Link the entries via their OH fields. */
-
-static struct ppc_link_hash_entry *
-lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
-{
- struct ppc_link_hash_entry *fdh = fh->oh;
-
- if (fdh == NULL)
- {
- const char *fd_name = fh->elf.root.root.string + 1;
-
- fdh = (struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
- if (fdh == NULL)
- return fdh;
-
- fdh->is_func_descriptor = 1;
- fdh->oh = fh;
- fh->is_func = 1;
- fh->oh = fdh;
- }
-
- return ppc_follow_link (fdh);
-}
-
-/* Make a fake function descriptor sym for the code sym FH. */
-
-static struct ppc_link_hash_entry *
-make_fdh (struct bfd_link_info *info,
- struct ppc_link_hash_entry *fh)
-{
- bfd *abfd;
- asymbol *newsym;
- struct bfd_link_hash_entry *bh;
- struct ppc_link_hash_entry *fdh;
-
- abfd = fh->elf.root.u.undef.abfd;
- newsym = bfd_make_empty_symbol (abfd);
- newsym->name = fh->elf.root.root.string + 1;
- newsym->section = bfd_und_section_ptr;
- newsym->value = 0;
- newsym->flags = BSF_WEAK;
-
- bh = NULL;
- if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
- newsym->flags, newsym->section,
- newsym->value, NULL, FALSE, FALSE,
- &bh))
- return NULL;
-
- fdh = (struct ppc_link_hash_entry *) bh;
- fdh->elf.non_elf = 0;
- fdh->fake = 1;
- fdh->is_func_descriptor = 1;
- fdh->oh = fh;
- fh->is_func = 1;
- fh->oh = fdh;
- return fdh;
-}
-
-/* Fix function descriptor symbols defined in .opd sections to be
- function type. */
-
-static bfd_boolean
-ppc64_elf_add_symbol_hook (bfd *ibfd,
- struct bfd_link_info *info,
- Elf_Internal_Sym *isym,
- const char **name,
- flagword *flags ATTRIBUTE_UNUSED,
- asection **sec,
- bfd_vma *value ATTRIBUTE_UNUSED)
-{
- if ((ibfd->flags & DYNAMIC) == 0
- && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
-
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
- {
- if ((ibfd->flags & DYNAMIC) == 0)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
- }
- else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
- ;
- else if (*sec != NULL
- && strcmp ((*sec)->name, ".opd") == 0)
- isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
-
- if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
- {
- if (abiversion (ibfd) == 0)
- set_abiversion (ibfd, 2);
- else if (abiversion (ibfd) == 1)
- {
- info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
- " for ABI version 1\n"), name);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- }
-
- return TRUE;
-}
-
-/* Merge non-visibility st_other attributes: local entry point. */
-
-static void
-ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
- const Elf_Internal_Sym *isym,
- bfd_boolean definition,
- bfd_boolean dynamic)
-{
- if (definition && !dynamic)
- h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
- | ELF_ST_VISIBILITY (h->other));
-}
-
-/* This function makes an old ABI object reference to ".bar" cause the
- inclusion of a new ABI object archive that defines "bar".
- NAME is a symbol defined in an archive. Return a symbol in the hash
- table that might be satisfied by the archive symbols. */
-
-static struct elf_link_hash_entry *
-ppc64_elf_archive_symbol_lookup (bfd *abfd,
- struct bfd_link_info *info,
- const char *name)
-{
- struct elf_link_hash_entry *h;
- char *dot_name;
- size_t len;
-
- h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
- if (h != NULL
- /* Don't return this sym if it is a fake function descriptor
- created by add_symbol_adjust. */
- && !(h->root.type == bfd_link_hash_undefweak
- && ((struct ppc_link_hash_entry *) h)->fake))
- return h;
-
- if (name[0] == '.')
- return h;
-
- len = strlen (name);
- dot_name = bfd_alloc (abfd, len + 2);
- if (dot_name == NULL)
- return (struct elf_link_hash_entry *) 0 - 1;
- dot_name[0] = '.';
- memcpy (dot_name + 1, name, len + 1);
- h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
- bfd_release (abfd, dot_name);
- return h;
-}
-
-/* This function satisfies all old ABI object references to ".bar" if a
- new ABI object defines "bar". Well, at least, undefined dot symbols
- are made weak. This stops later archive searches from including an
- object if we already have a function descriptor definition. It also
- prevents the linker complaining about undefined symbols.
- We also check and correct mismatched symbol visibility here. The
- most restrictive visibility of the function descriptor and the
- function entry symbol is used. */
-
-static bfd_boolean
-add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- struct ppc_link_hash_entry *fdh;
-
- if (eh->elf.root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (eh->elf.root.type == bfd_link_hash_warning)
- eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
-
- if (eh->elf.root.root.string[0] != '.')
- abort ();
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- fdh = lookup_fdh (eh, htab);
- if (fdh == NULL)
- {
- if (!info->relocatable
- && (eh->elf.root.type == bfd_link_hash_undefined
- || eh->elf.root.type == bfd_link_hash_undefweak)
- && eh->elf.ref_regular)
- {
- /* Make an undefweak function descriptor sym, which is enough to
- pull in an --as-needed shared lib, but won't cause link
- errors. Archives are handled elsewhere. */
- fdh = make_fdh (info, eh);
- if (fdh == NULL)
- return FALSE;
- fdh->elf.ref_regular = 1;
- }
- }
- else
- {
- unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
- unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
- if (entry_vis < descr_vis)
- fdh->elf.other += entry_vis - descr_vis;
- else if (entry_vis > descr_vis)
- eh->elf.other += descr_vis - entry_vis;
-
- if ((fdh->elf.root.type == bfd_link_hash_defined
- || fdh->elf.root.type == bfd_link_hash_defweak)
- && eh->elf.root.type == bfd_link_hash_undefined)
- {
- eh->elf.root.type = bfd_link_hash_undefweak;
- eh->was_undefined = 1;
- htab->twiddled_syms = 1;
- }
- }
-
- return TRUE;
-}
-
-/* Process list of dot-symbols we made in link_hash_newfunc. */
-
-static bfd_boolean
-ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- struct ppc_link_hash_entry **p, *eh;
-
- if (!is_ppc64_elf (info->output_bfd))
- return TRUE;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (is_ppc64_elf (ibfd))
- {
- p = &htab->dot_syms;
- while ((eh = *p) != NULL)
- {
- *p = NULL;
- if (&eh->elf == htab->elf.hgot)
- ;
- else if (htab->elf.hgot == NULL
- && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
- htab->elf.hgot = &eh->elf;
- else if (!add_symbol_adjust (eh, info))
- return FALSE;
- p = &eh->u.next_dot_sym;
- }
- }
-
- /* Clear the list for non-ppc64 input files. */
- p = &htab->dot_syms;
- while ((eh = *p) != NULL)
- {
- *p = NULL;
- p = &eh->u.next_dot_sym;
- }
-
- /* We need to fix the undefs list for any syms we have twiddled to
- undef_weak. */
- if (htab->twiddled_syms)
- {
- bfd_link_repair_undef_list (&htab->elf.root);
- htab->twiddled_syms = 0;
- }
- return TRUE;
-}
-
-/* Undo hash table changes when an --as-needed input file is determined
- not to be needed. */
-
-static bfd_boolean
-ppc64_elf_notice_as_needed (bfd *ibfd,
- struct bfd_link_info *info,
- enum notice_asneeded_action act)
-{
- if (act == notice_not_needed)
- {
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab == NULL)
- return FALSE;
-
- htab->dot_syms = NULL;
- }
- return _bfd_elf_notice_as_needed (ibfd, info, act);
-}
-
-/* If --just-symbols against a final linked binary, then assume we need
- toc adjusting stubs when calling functions defined there. */
-
-static void
-ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
-{
- if ((sec->flags & SEC_CODE) != 0
- && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
- && is_ppc64_elf (sec->owner))
- {
- asection *got = bfd_get_section_by_name (sec->owner, ".got");
- if (got != NULL
- && got->size >= elf_backend_got_header_size
- && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
- sec->has_toc_reloc = 1;
- }
- _bfd_elf_link_just_syms (sec, info);
-}
-
-static struct plt_entry **
-update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
- unsigned long r_symndx, bfd_vma r_addend, int tls_type)
-{
- struct got_entry **local_got_ents = elf_local_got_ents (abfd);
- struct plt_entry **local_plt;
- unsigned char *local_got_tls_masks;
-
- if (local_got_ents == NULL)
- {
- bfd_size_type size = symtab_hdr->sh_info;
-
- size *= (sizeof (*local_got_ents)
- + sizeof (*local_plt)
- + sizeof (*local_got_tls_masks));
- local_got_ents = bfd_zalloc (abfd, size);
- if (local_got_ents == NULL)
- return NULL;
- elf_local_got_ents (abfd) = local_got_ents;
- }
-
- if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
- {
- struct got_entry *ent;
-
- for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
- if (ent->addend == r_addend
- && ent->owner == abfd
- && ent->tls_type == tls_type)
- break;
- if (ent == NULL)
- {
- bfd_size_type amt = sizeof (*ent);
- ent = bfd_alloc (abfd, amt);
- if (ent == NULL)
- return FALSE;
- ent->next = local_got_ents[r_symndx];
- ent->addend = r_addend;
- ent->owner = abfd;
- ent->tls_type = tls_type;
- ent->is_indirect = FALSE;
- ent->got.refcount = 0;
- local_got_ents[r_symndx] = ent;
- }
- ent->got.refcount += 1;
- }
-
- local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
- local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
- local_got_tls_masks[r_symndx] |= tls_type;
-
- return local_plt + r_symndx;
-}
-
-static bfd_boolean
-update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
-{
- struct plt_entry *ent;
-
- for (ent = *plist; ent != NULL; ent = ent->next)
- if (ent->addend == addend)
- break;
- if (ent == NULL)
- {
- bfd_size_type amt = sizeof (*ent);
- ent = bfd_alloc (abfd, amt);
- if (ent == NULL)
- return FALSE;
- ent->next = *plist;
- ent->addend = addend;
- ent->plt.refcount = 0;
- *plist = ent;
- }
- ent->plt.refcount += 1;
- return TRUE;
-}
-
-static bfd_boolean
-is_branch_reloc (enum elf_ppc64_reloc_type r_type)
-{
- return (r_type == R_PPC64_REL24
- || r_type == R_PPC64_REL14
- || r_type == R_PPC64_REL14_BRTAKEN
- || r_type == R_PPC64_REL14_BRNTAKEN
- || r_type == R_PPC64_ADDR24
- || r_type == R_PPC64_ADDR14
- || r_type == R_PPC64_ADDR14_BRTAKEN
- || r_type == R_PPC64_ADDR14_BRNTAKEN);
-}
-
-/* Look through the relocs for a section during the first phase, and
- calculate needed space in the global offset table, procedure
- linkage table, and dynamic reloc sections. */
-
-static bfd_boolean
-ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
- asection *sec, const Elf_Internal_Rela *relocs)
-{
- struct ppc_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- asection *sreloc;
- asection **opd_sym_map;
- struct elf_link_hash_entry *tga, *dottga;
-
- if (info->relocatable)
- return TRUE;
-
- /* Don't do anything special with non-loaded, non-alloced sections.
- In particular, any relocs in such sections should not affect GOT
- and PLT reference counting (ie. we don't allow them to create GOT
- or PLT entries), there's no possibility or desire to optimize TLS
- relocs, and there's not much point in propagating relocs to shared
- libs that the dynamic linker won't relocate. */
- if ((sec->flags & SEC_ALLOC) == 0)
- return TRUE;
-
- BFD_ASSERT (is_ppc64_elf (abfd));
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
- FALSE, FALSE, TRUE);
- dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
- FALSE, FALSE, TRUE);
- symtab_hdr = &elf_symtab_hdr (abfd);
- sym_hashes = elf_sym_hashes (abfd);
- sreloc = NULL;
- opd_sym_map = NULL;
- if (strcmp (sec->name, ".opd") == 0)
- {
- /* Garbage collection needs some extra help with .opd sections.
- We don't want to necessarily keep everything referenced by
- relocs in .opd, as that would keep all functions. Instead,
- if we reference an .opd symbol (a function descriptor), we
- want to keep the function code symbol's section. This is
- easy for global symbols, but for local syms we need to keep
- information about the associated function section. */
- bfd_size_type amt;
-
- if (abiversion (abfd) == 0)
- set_abiversion (abfd, 1);
- else if (abiversion (abfd) == 2)
- {
- info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"),
- abiversion (abfd));
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- amt = sec->size * sizeof (*opd_sym_map) / 8;
- opd_sym_map = bfd_zalloc (abfd, amt);
- if (opd_sym_map == NULL)
- return FALSE;
- ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
- BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
- ppc64_elf_section_data (sec)->sec_type = sec_opd;
- }
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- enum elf_ppc64_reloc_type r_type;
- int tls_type;
- struct _ppc64_elf_section_data *ppc64_sec;
- struct plt_entry **ifunc;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- h = elf_follow_link (h);
-
- /* PR15323, ref flags aren't set for references in the same
- object. */
- h->root.non_ir_ref = 1;
-
- if (h == htab->elf.hgot)
- sec->has_toc_reloc = 1;
- }
-
- tls_type = 0;
- ifunc = NULL;
- if (h != NULL)
- {
- if (h->type == STT_GNU_IFUNC)
- {
- h->needs_plt = 1;
- ifunc = &h->plt.plist;
- }
- }
- else
- {
- Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
-
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
- {
- ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
- rel->r_addend, PLT_IFUNC);
- if (ifunc == NULL)
- return FALSE;
- }
- }
- r_type = ELF64_R_TYPE (rel->r_info);
- if (is_branch_reloc (r_type))
- {
- if (h != NULL && (h == tga || h == dottga))
- {
- if (rel != relocs
- && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
- || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
- /* We have a new-style __tls_get_addr call with a marker
- reloc. */
- ;
- else
- /* Mark this section as having an old-style call. */
- sec->has_tls_get_addr_call = 1;
- }
-
- /* STT_GNU_IFUNC symbols must have a PLT entry. */
- if (ifunc != NULL
- && !update_plt_info (abfd, ifunc, rel->r_addend))
- return FALSE;
- }
-
- switch (r_type)
- {
- case R_PPC64_TLSGD:
- case R_PPC64_TLSLD:
- /* These special tls relocs tie a call to __tls_get_addr with
- its parameter symbol. */
- break;
-
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSLD16_HA:
- tls_type = TLS_TLS | TLS_LD;
- goto dogottls;
-
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD;
- goto dogottls;
-
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_TPREL16_HA:
- if (!info->executable)
- info->flags |= DF_STATIC_TLS;
- tls_type = TLS_TLS | TLS_TPREL;
- goto dogottls;
-
- case R_PPC64_GOT_DTPREL16_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_HI:
- case R_PPC64_GOT_DTPREL16_HA:
- tls_type = TLS_TLS | TLS_DTPREL;
- dogottls:
- sec->has_tls_reloc = 1;
- /* Fall thru */
-
- case R_PPC64_GOT16:
- case R_PPC64_GOT16_DS:
- case R_PPC64_GOT16_HA:
- case R_PPC64_GOT16_HI:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_LO_DS:
- /* This symbol requires a global offset table entry. */
- sec->has_toc_reloc = 1;
- if (r_type == R_PPC64_GOT_TLSLD16
- || r_type == R_PPC64_GOT_TLSGD16
- || r_type == R_PPC64_GOT_TPREL16_DS
- || r_type == R_PPC64_GOT_DTPREL16_DS
- || r_type == R_PPC64_GOT16
- || r_type == R_PPC64_GOT16_DS)
- {
- htab->do_multi_toc = 1;
- ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
- }
-
- if (ppc64_elf_tdata (abfd)->got == NULL
- && !create_got_section (abfd, info))
- return FALSE;
-
- if (h != NULL)
- {
- struct ppc_link_hash_entry *eh;
- struct got_entry *ent;
-
- eh = (struct ppc_link_hash_entry *) h;
- for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend
- && ent->owner == abfd
- && ent->tls_type == tls_type)
- break;
- if (ent == NULL)
- {
- bfd_size_type amt = sizeof (*ent);
- ent = bfd_alloc (abfd, amt);
- if (ent == NULL)
- return FALSE;
- ent->next = eh->elf.got.glist;
- ent->addend = rel->r_addend;
- ent->owner = abfd;
- ent->tls_type = tls_type;
- ent->is_indirect = FALSE;
- ent->got.refcount = 0;
- eh->elf.got.glist = ent;
- }
- ent->got.refcount += 1;
- eh->tls_mask |= tls_type;
- }
- else
- /* This is a global offset table entry for a local symbol. */
- if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
- rel->r_addend, tls_type))
- return FALSE;
-
- /* We may also need a plt entry if the symbol turns out to be
- an ifunc. */
- if (h != NULL && !info->shared && abiversion (abfd) == 2)
- {
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
- }
- break;
-
- case R_PPC64_PLT16_HA:
- case R_PPC64_PLT16_HI:
- case R_PPC64_PLT16_LO:
- case R_PPC64_PLT32:
- case R_PPC64_PLT64:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
- if (h == NULL)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
- h->needs_plt = 1;
- if (h->root.root.string[0] == '.'
- && h->root.root.string[1] != '\0')
- ((struct ppc_link_hash_entry *) h)->is_func = 1;
- }
- break;
-
- /* The following relocations don't need to propagate the
- relocation if linking a shared object since they are
- section relative. */
- case R_PPC64_SECTOFF:
- case R_PPC64_SECTOFF_LO:
- case R_PPC64_SECTOFF_HI:
- case R_PPC64_SECTOFF_HA:
- case R_PPC64_SECTOFF_DS:
- case R_PPC64_SECTOFF_LO_DS:
- case R_PPC64_DTPREL16:
- case R_PPC64_DTPREL16_LO:
- case R_PPC64_DTPREL16_HI:
- case R_PPC64_DTPREL16_HA:
- case R_PPC64_DTPREL16_DS:
- case R_PPC64_DTPREL16_LO_DS:
- case R_PPC64_DTPREL16_HIGH:
- case R_PPC64_DTPREL16_HIGHA:
- case R_PPC64_DTPREL16_HIGHER:
- case R_PPC64_DTPREL16_HIGHERA:
- case R_PPC64_DTPREL16_HIGHEST:
- case R_PPC64_DTPREL16_HIGHESTA:
- break;
-
- /* Nor do these. */
- case R_PPC64_REL16:
- case R_PPC64_REL16_LO:
- case R_PPC64_REL16_HI:
- case R_PPC64_REL16_HA:
- break;
-
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_DS:
- htab->do_multi_toc = 1;
- ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_HA:
- case R_PPC64_TOC16_LO_DS:
- sec->has_toc_reloc = 1;
- break;
-
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_PPC64_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return FALSE;
- break;
-
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_PPC64_GNU_VTENTRY:
- BFD_ASSERT (h != NULL);
- if (h != NULL
- && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return FALSE;
- break;
-
- case R_PPC64_REL14:
- case R_PPC64_REL14_BRTAKEN:
- case R_PPC64_REL14_BRNTAKEN:
- {
- asection *dest = NULL;
-
- /* Heuristic: If jumping outside our section, chances are
- we are going to need a stub. */
- if (h != NULL)
- {
- /* If the sym is weak it may be overridden later, so
- don't assume we know where a weak sym lives. */
- if (h->root.type == bfd_link_hash_defined)
- dest = h->root.u.def.section;
- }
- else
- {
- Elf_Internal_Sym *isym;
-
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
-
- dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
- }
-
- if (dest != sec)
- ppc64_elf_section_data (sec)->has_14bit_branch = 1;
- }
- /* Fall through. */
-
- case R_PPC64_REL24:
- if (h != NULL && ifunc == NULL)
- {
- /* We may need a .plt entry if the function this reloc
- refers to is in a shared lib. */
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
- h->needs_plt = 1;
- if (h->root.root.string[0] == '.'
- && h->root.root.string[1] != '\0')
- ((struct ppc_link_hash_entry *) h)->is_func = 1;
- if (h == tga || h == dottga)
- sec->has_tls_reloc = 1;
- }
- break;
-
- case R_PPC64_TPREL64:
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
- if (!info->executable)
- info->flags |= DF_STATIC_TLS;
- goto dotlstoc;
-
- case R_PPC64_DTPMOD64:
- if (rel + 1 < rel_end
- && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
- && rel[1].r_offset == rel->r_offset + 8)
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
- else
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
- goto dotlstoc;
-
- case R_PPC64_DTPREL64:
- tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
- if (rel != relocs
- && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
- && rel[-1].r_offset == rel->r_offset - 8)
- /* This is the second reloc of a dtpmod, dtprel pair.
- Don't mark with TLS_DTPREL. */
- goto dodyn;
-
- dotlstoc:
- sec->has_tls_reloc = 1;
- if (h != NULL)
- {
- struct ppc_link_hash_entry *eh;
- eh = (struct ppc_link_hash_entry *) h;
- eh->tls_mask |= tls_type;
- }
- else
- if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
- rel->r_addend, tls_type))
- return FALSE;
-
- ppc64_sec = ppc64_elf_section_data (sec);
- if (ppc64_sec->sec_type != sec_toc)
- {
- bfd_size_type amt;
-
- /* One extra to simplify get_tls_mask. */
- amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
- ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
- if (ppc64_sec->u.toc.symndx == NULL)
- return FALSE;
- amt = sec->size * sizeof (bfd_vma) / 8;
- ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
- if (ppc64_sec->u.toc.add == NULL)
- return FALSE;
- BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
- ppc64_sec->sec_type = sec_toc;
- }
- BFD_ASSERT (rel->r_offset % 8 == 0);
- ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
- ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
-
- /* Mark the second slot of a GD or LD entry.
- -1 to indicate GD and -2 to indicate LD. */
- if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
- ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
- else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
- ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
- goto dodyn;
-
- case R_PPC64_TPREL16:
- case R_PPC64_TPREL16_LO:
- case R_PPC64_TPREL16_HI:
- case R_PPC64_TPREL16_HA:
- case R_PPC64_TPREL16_DS:
- case R_PPC64_TPREL16_LO_DS:
- case R_PPC64_TPREL16_HIGH:
- case R_PPC64_TPREL16_HIGHA:
- case R_PPC64_TPREL16_HIGHER:
- case R_PPC64_TPREL16_HIGHERA:
- case R_PPC64_TPREL16_HIGHEST:
- case R_PPC64_TPREL16_HIGHESTA:
- if (info->shared)
- {
- if (!info->executable)
- info->flags |= DF_STATIC_TLS;
- goto dodyn;
- }
- break;
-
- case R_PPC64_ADDR64:
- if (opd_sym_map != NULL
- && rel + 1 < rel_end
- && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
- {
- if (h != NULL)
- {
- if (h->root.root.string[0] == '.'
- && h->root.root.string[1] != 0
- && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
- ;
- else
- ((struct ppc_link_hash_entry *) h)->is_func = 1;
- }
- else
- {
- asection *s;
- Elf_Internal_Sym *isym;
-
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
-
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s != NULL && s != sec)
- opd_sym_map[rel->r_offset / 8] = s;
- }
- }
- /* Fall through. */
-
- case R_PPC64_ADDR16:
- case R_PPC64_ADDR16_DS:
- case R_PPC64_ADDR16_HA:
- case R_PPC64_ADDR16_HI:
- case R_PPC64_ADDR16_HIGH:
- case R_PPC64_ADDR16_HIGHA:
- case R_PPC64_ADDR16_HIGHER:
- case R_PPC64_ADDR16_HIGHERA:
- case R_PPC64_ADDR16_HIGHEST:
- case R_PPC64_ADDR16_HIGHESTA:
- case R_PPC64_ADDR16_LO:
- case R_PPC64_ADDR16_LO_DS:
- if (h != NULL && !info->shared && abiversion (abfd) == 2
- && rel->r_addend == 0)
- {
- /* We may need a .plt entry if this reloc refers to a
- function in a shared lib. */
- if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
- return FALSE;
- h->pointer_equality_needed = 1;
- }
- /* Fall through. */
-
- case R_PPC64_REL30:
- case R_PPC64_REL32:
- case R_PPC64_REL64:
- case R_PPC64_ADDR14:
- case R_PPC64_ADDR14_BRNTAKEN:
- case R_PPC64_ADDR14_BRTAKEN:
- case R_PPC64_ADDR24:
- case R_PPC64_ADDR32:
- case R_PPC64_UADDR16:
- case R_PPC64_UADDR32:
- case R_PPC64_UADDR64:
- case R_PPC64_TOC:
- if (h != NULL && !info->shared)
- /* We may need a copy reloc. */
- h->non_got_ref = 1;
-
- /* Don't propagate .opd relocs. */
- if (NO_OPD_RELOCS && opd_sym_map != NULL)
- break;
-
- /* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). In case of a weak definition,
- DEF_REGULAR may be cleared later by a strong definition in
- a shared library. We account for that possibility below by
- storing information in the dyn_relocs field of the hash
- table entry. A similar situation occurs when creating
- shared libraries and symbol visibility changes render the
- symbol local.
-
- If on the other hand, we are creating an executable, we
- may need to keep relocations for symbols satisfied by a
- dynamic library if we manage to avoid copy relocs for the
- symbol. */
- dodyn:
- if ((info->shared
- && (must_be_dyn_reloc (info, r_type)
- || (h != NULL
- && (!SYMBOLIC_BIND (info, h)
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (ELIMINATE_COPY_RELOCS
- && !info->shared
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular))
- || (!info->shared
- && ifunc != NULL))
- {
- /* We must copy these reloc types into the output file.
- Create a reloc section in dynobj and make room for
- this reloc. */
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
-
- if (sreloc == NULL)
- return FALSE;
- }
-
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- {
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **head;
-
- head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
- p = *head;
- if (p == NULL || p->sec != sec)
- {
- p = bfd_alloc (htab->elf.dynobj, sizeof *p);
- if (p == NULL)
- return FALSE;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
- p->pc_count = 0;
- }
- p->count += 1;
- if (!must_be_dyn_reloc (info, r_type))
- p->pc_count += 1;
- }
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
- struct ppc_dyn_relocs *p;
- struct ppc_dyn_relocs **head;
- bfd_boolean is_ifunc;
- asection *s;
- void *vpp;
- Elf_Internal_Sym *isym;
-
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
-
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s == NULL)
- s = sec;
-
- vpp = &elf_section_data (s)->local_dynrel;
- head = (struct ppc_dyn_relocs **) vpp;
- is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
- p = *head;
- if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
- p = p->next;
- if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
- {
- p = bfd_alloc (htab->elf.dynobj, sizeof *p);
- if (p == NULL)
- return FALSE;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->ifunc = is_ifunc;
- p->count = 0;
- }
- p->count += 1;
- }
- }
- break;
-
- default:
- break;
- }
- }
-
- return TRUE;
-}
-
-/* Merge backend specific data from an object file to the output
- object file when linking. */
-
-static bfd_boolean
-ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
-{
- unsigned long iflags, oflags;
-
- if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
- return TRUE;
-
- if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
- return TRUE;
-
- if (!_bfd_generic_verify_endian_match (ibfd, obfd))
- return FALSE;
-
- iflags = elf_elfheader (ibfd)->e_flags;
- oflags = elf_elfheader (obfd)->e_flags;
-
- if (!elf_flags_init (obfd) || oflags == 0)
- {
- elf_flags_init (obfd) = TRUE;
- elf_elfheader (obfd)->e_flags = iflags;
- }
- else if (iflags == oflags || iflags == 0)
- ;
- else if (iflags & ~EF_PPC64_ABI)
- {
- (*_bfd_error_handler)
- (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- (*_bfd_error_handler)
- (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
- ibfd, iflags, oflags);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
-
- /* Merge Tag_compatibility attributes and any common GNU ones. */
- _bfd_elf_merge_object_attributes (ibfd, obfd);
-
- return TRUE;
-}
-
-static bfd_boolean
-ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
-{
- /* Print normal ELF private data. */
- _bfd_elf_print_private_bfd_data (abfd, ptr);
-
- if (elf_elfheader (abfd)->e_flags != 0)
- {
- FILE *file = ptr;
-
- /* xgettext:c-format */
- fprintf (file, _("private flags = 0x%lx:"),
- elf_elfheader (abfd)->e_flags);
-
- if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
- fprintf (file, _(" [abiv%ld]"),
- elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
- fputc ('\n', file);
- }
-
- return TRUE;
-}
-
-/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
- of the code entry point, and its section. */
-
-static bfd_vma
-opd_entry_value (asection *opd_sec,
- bfd_vma offset,
- asection **code_sec,
- bfd_vma *code_off,
- bfd_boolean in_code_sec)
-{
- bfd *opd_bfd = opd_sec->owner;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Rela *lo, *hi, *look;
- bfd_vma val;
-
- /* No relocs implies we are linking a --just-symbols object, or looking
- at a final linked executable with addr2line or somesuch. */
- if (opd_sec->reloc_count == 0)
- {
- bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
-
- if (contents == NULL)
- {
- if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
- return (bfd_vma) -1;
- ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
- }
-
- val = bfd_get_64 (opd_bfd, contents + offset);
- if (code_sec != NULL)
- {
- asection *sec, *likely = NULL;
-
- if (in_code_sec)
- {
- sec = *code_sec;
- if (sec->vma <= val
- && val < sec->vma + sec->size)
- likely = sec;
- else
- val = -1;
- }
- else
- for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
- if (sec->vma <= val
- && (sec->flags & SEC_LOAD) != 0
- && (sec->flags & SEC_ALLOC) != 0)
- likely = sec;
- if (likely != NULL)
- {
- *code_sec = likely;
- if (code_off != NULL)
- *code_off = val - likely->vma;
- }
- }
- return val;
- }
-
- BFD_ASSERT (is_ppc64_elf (opd_bfd));
-
- relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
- if (relocs == NULL)
- relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
-
- /* Go find the opd reloc at the sym address. */
- lo = relocs;
- BFD_ASSERT (lo != NULL);
- hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
- val = (bfd_vma) -1;
- while (lo < hi)
- {
- look = lo + (hi - lo) / 2;
- if (look->r_offset < offset)
- lo = look + 1;
- else if (look->r_offset > offset)
- hi = look;
- else
- {
- Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
-
- if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
- {
- unsigned long symndx = ELF64_R_SYM (look->r_info);
- asection *sec;
-
- if (symndx < symtab_hdr->sh_info
- || elf_sym_hashes (opd_bfd) == NULL)
- {
- Elf_Internal_Sym *sym;
-
- sym = (Elf_Internal_Sym *) symtab_hdr->contents;
- if (sym == NULL)
- {
- size_t symcnt = symtab_hdr->sh_info;
- if (elf_sym_hashes (opd_bfd) == NULL)
- symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
- sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
- 0, NULL, NULL, NULL);
- if (sym == NULL)
- break;
- symtab_hdr->contents = (bfd_byte *) sym;
- }
-
- sym += symndx;
- val = sym->st_value;
- sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
- BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
- }
- else
- {
- struct elf_link_hash_entry **sym_hashes;
- struct elf_link_hash_entry *rh;
-
- sym_hashes = elf_sym_hashes (opd_bfd);
- rh = sym_hashes[symndx - symtab_hdr->sh_info];
- if (rh != NULL)
- {
- rh = elf_follow_link (rh);
- BFD_ASSERT (rh->root.type == bfd_link_hash_defined
- || rh->root.type == bfd_link_hash_defweak);
- val = rh->root.u.def.value;
- sec = rh->root.u.def.section;
- }
- else
- {
- /* Handle the odd case where we can be called
- during bfd_elf_link_add_symbols before the
- symbol hashes have been fully populated. */
- Elf_Internal_Sym *sym;
-
- sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
- symndx, NULL, NULL, NULL);
- if (sym == NULL)
- break;
-
- val = sym->st_value;
- sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
- free (sym);
- }
- }
- val += look->r_addend;
- if (code_off != NULL)
- *code_off = val;
- if (code_sec != NULL)
- {
- if (in_code_sec && *code_sec != sec)
- return -1;
- else
- *code_sec = sec;
- }
- if (sec != NULL && sec->output_section != NULL)
- val += sec->output_section->vma + sec->output_offset;
- }
- break;
- }
- }
-
- return val;
-}
-
-/* If the ELF symbol SYM might be a function in SEC, return the
- function size and set *CODE_OFF to the function's entry point,
- otherwise return zero. */
-
-static bfd_size_type
-ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
- bfd_vma *code_off)
-{
- bfd_size_type size;
-
- if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
- | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
- return 0;
-
- size = 0;
- if (!(sym->flags & BSF_SYNTHETIC))
- size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
-
- if (strcmp (sym->section->name, ".opd") == 0)
- {
- if (opd_entry_value (sym->section, sym->value,
- &sec, code_off, TRUE) == (bfd_vma) -1)
- return 0;
- /* An old ABI binary with dot-syms has a size of 24 on the .opd
- symbol. This size has nothing to do with the code size of the
- function, which is what we're supposed to return, but the
- code size isn't available without looking up the dot-sym.
- However, doing that would be a waste of time particularly
- since elf_find_function will look at the dot-sym anyway.
- Now, elf_find_function will keep the largest size of any
- function sym found at the code address of interest, so return
- 1 here to avoid it incorrectly caching a larger function size
- for a small function. This does mean we return the wrong
- size for a new-ABI function of size 24, but all that does is
- disable caching for such functions. */
- if (size == 24)
- size = 1;
- }
- else
- {
- if (sym->section != sec)
- return 0;
- *code_off = sym->value;
- }
- if (size == 0)
- size = 1;
- return size;
-}
-
-/* Return true if symbol is defined in a regular object file. */
-
-static bfd_boolean
-is_static_defined (struct elf_link_hash_entry *h)
-{
- return ((h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && h->root.u.def.section != NULL
- && h->root.u.def.section->output_section != NULL);
-}
-
-/* If FDH is a function descriptor symbol, return the associated code
- entry symbol if it is defined. Return NULL otherwise. */
-
-static struct ppc_link_hash_entry *
-defined_code_entry (struct ppc_link_hash_entry *fdh)
-{
- if (fdh->is_func_descriptor)
- {
- struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
- if (fh->elf.root.type == bfd_link_hash_defined
- || fh->elf.root.type == bfd_link_hash_defweak)
- return fh;
- }
- return NULL;
-}
-
-/* If FH is a function code entry symbol, return the associated
- function descriptor symbol if it is defined. Return NULL otherwise. */
-
-static struct ppc_link_hash_entry *
-defined_func_desc (struct ppc_link_hash_entry *fh)
-{
- if (fh->oh != NULL
- && fh->oh->is_func_descriptor)
- {
- struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
- if (fdh->elf.root.type == bfd_link_hash_defined
- || fdh->elf.root.type == bfd_link_hash_defweak)
- return fdh;
- }
- return NULL;
-}
-
-/* Mark all our entry sym sections, both opd and code section. */
-
-static void
-ppc64_elf_gc_keep (struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- struct bfd_sym_chain *sym;
-
- if (htab == NULL)
- return;
-
- for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
- {
- struct ppc_link_hash_entry *eh, *fh;
- asection *sec;
-
- eh = (struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
- if (eh == NULL)
- continue;
- if (eh->elf.root.type != bfd_link_hash_defined
- && eh->elf.root.type != bfd_link_hash_defweak)
- continue;
-
- fh = defined_code_entry (eh);
- if (fh != NULL)
- {
- sec = fh->elf.root.u.def.section;
- sec->flags |= SEC_KEEP;
- }
- else if (get_opd_info (eh->elf.root.u.def.section) != NULL
- && opd_entry_value (eh->elf.root.u.def.section,
- eh->elf.root.u.def.value,
- &sec, NULL, FALSE) != (bfd_vma) -1)
- sec->flags |= SEC_KEEP;
-
- sec = eh->elf.root.u.def.section;
- sec->flags |= SEC_KEEP;
- }
-}
-
-/* Mark sections containing dynamically referenced symbols. When
- building shared libraries, we must assume that any visible symbol is
- referenced. */
-
-static bfd_boolean
-ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
-{
- struct bfd_link_info *info = (struct bfd_link_info *) inf;
- struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
- struct ppc_link_hash_entry *fdh;
-
- /* Dynamic linking info is on the func descriptor sym. */
- fdh = defined_func_desc (eh);
- if (fdh != NULL)
- eh = fdh;
-
- if ((eh->elf.root.type == bfd_link_hash_defined
- || eh->elf.root.type == bfd_link_hash_defweak)
- && (eh->elf.ref_dynamic
- || (!info->executable
- && eh->elf.def_regular
- && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
- && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
- && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
- || !bfd_hide_sym_by_version (info->version_info,
- eh->elf.root.root.string)))))
- {
- asection *code_sec;
- struct ppc_link_hash_entry *fh;
-
- eh->elf.root.u.def.section->flags |= SEC_KEEP;
-
- /* Function descriptor syms cause the associated
- function code sym section to be marked. */
- fh = defined_code_entry (eh);
- if (fh != NULL)
- {
- code_sec = fh->elf.root.u.def.section;
- code_sec->flags |= SEC_KEEP;
- }
- else if (get_opd_info (eh->elf.root.u.def.section) != NULL
- && opd_entry_value (eh->elf.root.u.def.section,
- eh->elf.root.u.def.value,
- &code_sec, NULL, FALSE) != (bfd_vma) -1)
- code_sec->flags |= SEC_KEEP;
- }
-
- return TRUE;
-}
-
-/* Return the section that should be marked against GC for a given
- relocation. */
-
-static asection *
-ppc64_elf_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
-{
- asection *rsec;
-
- /* Syms return NULL if we're marking .opd, so we avoid marking all
- function sections, as all functions are referenced in .opd. */
- rsec = NULL;
- if (get_opd_info (sec) != NULL)
- return rsec;
-
- if (h != NULL)
- {
- enum elf_ppc64_reloc_type r_type;
- struct ppc_link_hash_entry *eh, *fh, *fdh;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- switch (r_type)
- {
- case R_PPC64_GNU_VTINHERIT:
- case R_PPC64_GNU_VTENTRY:
- break;
-
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- eh = (struct ppc_link_hash_entry *) h;
- fdh = defined_func_desc (eh);
- if (fdh != NULL)
- eh = fdh;
-
- /* Function descriptor syms cause the associated
- function code sym section to be marked. */
- fh = defined_code_entry (eh);
- if (fh != NULL)
- {
- /* They also mark their opd section. */
- eh->elf.root.u.def.section->gc_mark = 1;
-
- rsec = fh->elf.root.u.def.section;
- }
- else if (get_opd_info (eh->elf.root.u.def.section) != NULL
- && opd_entry_value (eh->elf.root.u.def.section,
- eh->elf.root.u.def.value,
- &rsec, NULL, FALSE) != (bfd_vma) -1)
- eh->elf.root.u.def.section->gc_mark = 1;
- else
- rsec = h->root.u.def.section;
- break;
-
- case bfd_link_hash_common:
- rsec = h->root.u.c.p->section;
- break;
-
- default:
- return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- }
- }
- }
- else
- {
- struct _opd_sec_data *opd;
-
- rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- opd = get_opd_info (rsec);
- if (opd != NULL && opd->func_sec != NULL)
- {
- rsec->gc_mark = 1;
-
- rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
- }
- }
-
- return rsec;
-}
-
-/* Update the .got, .plt. and dynamic reloc reference counts for the
- section being removed. */
-
-static bfd_boolean
-ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
- asection *sec, const Elf_Internal_Rela *relocs)
-{
- struct ppc_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- struct got_entry **local_got_ents;
- const Elf_Internal_Rela *rel, *relend;
-
- if (info->relocatable)
- return TRUE;
-
- if ((sec->flags & SEC_ALLOC) == 0)
- return TRUE;
-
- elf_section_data (sec)->local_dynrel = NULL;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- symtab_hdr = &elf_symtab_hdr (abfd);
- sym_hashes = elf_sym_hashes (abfd);
- local_got_ents = elf_local_got_ents (abfd);
-
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- {
- unsigned long r_symndx;
- enum elf_ppc64_reloc_type r_type;
- struct elf_link_hash_entry *h = NULL;
- unsigned char tls_type = 0;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct ppc_link_hash_entry *eh;
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- h = elf_follow_link (h);
- eh = (struct ppc_link_hash_entry *) h;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
- {
- /* Everything must go for SEC. */
- *pp = p->next;
- break;
- }
- }
-
- if (is_branch_reloc (r_type))
- {
- struct plt_entry **ifunc = NULL;
- if (h != NULL)
- {
- if (h->type == STT_GNU_IFUNC)
- ifunc = &h->plt.plist;
- }
- else if (local_got_ents != NULL)
- {
- struct plt_entry **local_plt = (struct plt_entry **)
- (local_got_ents + symtab_hdr->sh_info);
- unsigned char *local_got_tls_masks = (unsigned char *)
- (local_plt + symtab_hdr->sh_info);
- if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
- ifunc = local_plt + r_symndx;
- }
- if (ifunc != NULL)
- {
- struct plt_entry *ent;
-
- for (ent = *ifunc; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend)
- break;
- if (ent == NULL)
- abort ();
- if (ent->plt.refcount > 0)
- ent->plt.refcount -= 1;
- continue;
- }
- }
-
- switch (r_type)
- {
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSLD16_HA:
- tls_type = TLS_TLS | TLS_LD;
- goto dogot;
-
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD;
- goto dogot;
-
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_TPREL16_HA:
- tls_type = TLS_TLS | TLS_TPREL;
- goto dogot;
-
- case R_PPC64_GOT_DTPREL16_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_HI:
- case R_PPC64_GOT_DTPREL16_HA:
- tls_type = TLS_TLS | TLS_DTPREL;
- goto dogot;
-
- case R_PPC64_GOT16:
- case R_PPC64_GOT16_DS:
- case R_PPC64_GOT16_HA:
- case R_PPC64_GOT16_HI:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_LO_DS:
- dogot:
- {
- struct got_entry *ent;
-
- if (h != NULL)
- ent = h->got.glist;
- else
- ent = local_got_ents[r_symndx];
-
- for (; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend
- && ent->owner == abfd
- && ent->tls_type == tls_type)
- break;
- if (ent == NULL)
- abort ();
- if (ent->got.refcount > 0)
- ent->got.refcount -= 1;
- }
- break;
-
- case R_PPC64_PLT16_HA:
- case R_PPC64_PLT16_HI:
- case R_PPC64_PLT16_LO:
- case R_PPC64_PLT32:
- case R_PPC64_PLT64:
- case R_PPC64_REL14:
- case R_PPC64_REL14_BRNTAKEN:
- case R_PPC64_REL14_BRTAKEN:
- case R_PPC64_REL24:
- if (h != NULL)
- {
- struct plt_entry *ent;
-
- for (ent = h->plt.plist; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend)
- break;
- if (ent != NULL && ent->plt.refcount > 0)
- ent->plt.refcount -= 1;
- }
- break;
-
- default:
- break;
- }
- }
- return TRUE;
-}
-
-/* The maximum size of .sfpr. */
-#define SFPR_MAX (218*4)
-
-struct sfpr_def_parms
-{
- const char name[12];
- unsigned char lo, hi;
- bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
- bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
-};
-
-/* Auto-generate _save*, _rest* functions in .sfpr. */
-
-static bfd_boolean
-sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- unsigned int i;
- size_t len = strlen (parm->name);
- bfd_boolean writing = FALSE;
- char sym[16];
-
- if (htab == NULL)
- return FALSE;
-
- memcpy (sym, parm->name, len);
- sym[len + 2] = 0;
-
- for (i = parm->lo; i <= parm->hi; i++)
- {
- struct elf_link_hash_entry *h;
-
- sym[len + 0] = i / 10 + '0';
- sym[len + 1] = i % 10 + '0';
- h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
- if (h != NULL
- && !h->def_regular)
- {
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = htab->sfpr;
- h->root.u.def.value = htab->sfpr->size;
- h->type = STT_FUNC;
- h->def_regular = 1;
- _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
- writing = TRUE;
- if (htab->sfpr->contents == NULL)
- {
- htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
- if (htab->sfpr->contents == NULL)
- return FALSE;
- }
- }
- if (writing)
- {
- bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
- if (i != parm->hi)
- p = (*parm->write_ent) (htab->elf.dynobj, p, i);
- else
- p = (*parm->write_tail) (htab->elf.dynobj, p, i);
- htab->sfpr->size = p - htab->sfpr->contents;
- }
- }
-
- return TRUE;
-}
-
-static bfd_byte *
-savegpr0 (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = savegpr0 (abfd, p, r);
- bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
- p = p + 4;
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-restgpr0 (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
- p = p + 4;
- p = restgpr0 (abfd, p, r);
- bfd_put_32 (abfd, MTLR_R0, p);
- p = p + 4;
- if (r == 29)
- {
- p = restgpr0 (abfd, p, 30);
- p = restgpr0 (abfd, p, 31);
- }
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-savegpr1 (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = savegpr1 (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-restgpr1 (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = restgpr1 (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-savefpr (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = savefpr (abfd, p, r);
- bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
- p = p + 4;
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-restfpr (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
- return p + 4;
-}
-
-static bfd_byte *
-restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
- p = p + 4;
- p = restfpr (abfd, p, r);
- bfd_put_32 (abfd, MTLR_R0, p);
- p = p + 4;
- if (r == 29)
- {
- p = restfpr (abfd, p, 30);
- p = restfpr (abfd, p, 31);
- }
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = savefpr (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = restfpr (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-savevr (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
- p = p + 4;
- bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
- return p + 4;
-}
-
-static bfd_byte *
-savevr_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = savevr (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-static bfd_byte *
-restvr (bfd *abfd, bfd_byte *p, int r)
-{
- bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
- p = p + 4;
- bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
- return p + 4;
-}
-
-static bfd_byte *
-restvr_tail (bfd *abfd, bfd_byte *p, int r)
-{
- p = restvr (abfd, p, r);
- bfd_put_32 (abfd, BLR, p);
- return p + 4;
-}
-
-/* Called via elf_link_hash_traverse to transfer dynamic linking
- information on function code symbol entries to their corresponding
- function descriptor symbol entries. */
-
-static bfd_boolean
-func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
-{
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- struct plt_entry *ent;
- struct ppc_link_hash_entry *fh;
- struct ppc_link_hash_entry *fdh;
- bfd_boolean force_local;
-
- fh = (struct ppc_link_hash_entry *) h;
- if (fh->elf.root.type == bfd_link_hash_indirect)
- return TRUE;
-
- info = inf;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Resolve undefined references to dot-symbols as the value
- in the function descriptor, if we have one in a regular object.
- This is to satisfy cases like ".quad .foo". Calls to functions
- in dynamic objects are handled elsewhere. */
- if (fh->elf.root.type == bfd_link_hash_undefweak
- && fh->was_undefined
- && (fdh = defined_func_desc (fh)) != NULL
- && get_opd_info (fdh->elf.root.u.def.section) != NULL
- && opd_entry_value (fdh->elf.root.u.def.section,
- fdh->elf.root.u.def.value,
- &fh->elf.root.u.def.section,
- &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
- {
- fh->elf.root.type = fdh->elf.root.type;
- fh->elf.forced_local = 1;
- fh->elf.def_regular = fdh->elf.def_regular;
- fh->elf.def_dynamic = fdh->elf.def_dynamic;
- }
-
- /* If this is a function code symbol, transfer dynamic linking
- information to the function descriptor symbol. */
- if (!fh->is_func)
- return TRUE;
-
- for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.refcount > 0)
- break;
- if (ent == NULL
- || fh->elf.root.root.string[0] != '.'
- || fh->elf.root.root.string[1] == '\0')
- return TRUE;
-
- /* Find the corresponding function descriptor symbol. Create it
- as undefined if necessary. */
-
- fdh = lookup_fdh (fh, htab);
- if (fdh == NULL
- && !info->executable
- && (fh->elf.root.type == bfd_link_hash_undefined
- || fh->elf.root.type == bfd_link_hash_undefweak))
- {
- fdh = make_fdh (info, fh);
- if (fdh == NULL)
- return FALSE;
- }
-
- /* Fake function descriptors are made undefweak. If the function
- code symbol is strong undefined, make the fake sym the same.
- If the function code symbol is defined, then force the fake
- descriptor local; We can't support overriding of symbols in a
- shared library on a fake descriptor. */
-
- if (fdh != NULL
- && fdh->fake
- && fdh->elf.root.type == bfd_link_hash_undefweak)
- {
- if (fh->elf.root.type == bfd_link_hash_undefined)
- {
- fdh->elf.root.type = bfd_link_hash_undefined;
- bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
- }
- else if (fh->elf.root.type == bfd_link_hash_defined
- || fh->elf.root.type == bfd_link_hash_defweak)
- {
- _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
- }
- }
-
- if (fdh != NULL
- && !fdh->elf.forced_local
- && (!info->executable
- || fdh->elf.def_dynamic
- || fdh->elf.ref_dynamic
- || (fdh->elf.root.type == bfd_link_hash_undefweak
- && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
- {
- if (fdh->elf.dynindx == -1)
- if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
- return FALSE;
- fdh->elf.ref_regular |= fh->elf.ref_regular;
- fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
- fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
- fdh->elf.non_got_ref |= fh->elf.non_got_ref;
- if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
- {
- move_plt_plist (fh, fdh);
- fdh->elf.needs_plt = 1;
- }
- fdh->is_func_descriptor = 1;
- fdh->oh = fh;
- fh->oh = fdh;
- }
-
- /* Now that the info is on the function descriptor, clear the
- function code sym info. Any function code syms for which we
- don't have a definition in a regular file, we force local.
- This prevents a shared library from exporting syms that have
- been imported from another library. Function code syms that
- are really in the library we must leave global to prevent the
- linker dragging in a definition from a static library. */
- force_local = (!fh->elf.def_regular
- || fdh == NULL
- || !fdh->elf.def_regular
- || fdh->elf.forced_local);
- _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
-
- return TRUE;
-}
-
-/* Called near the start of bfd_elf_size_dynamic_sections. We use
- this hook to a) provide some gcc support functions, and b) transfer
- dynamic linking information gathered so far on function code symbol
- entries, to their corresponding function descriptor symbol entries. */
-
-static bfd_boolean
-ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- unsigned int i;
- static const struct sfpr_def_parms funcs[] =
- {
- { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
- { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
- { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
- { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
- { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
- { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
- { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
- { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
- { "._savef", 14, 31, savefpr, savefpr1_tail },
- { "._restf", 14, 31, restfpr, restfpr1_tail },
- { "_savevr_", 20, 31, savevr, savevr_tail },
- { "_restvr_", 20, 31, restvr, restvr_tail }
- };
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (!info->relocatable
- && htab->elf.hgot != NULL)
- {
- _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
- /* Make .TOC. defined so as to prevent it being made dynamic.
- The wrong value here is fixed later in ppc64_elf_set_toc. */
- htab->elf.hgot->type = STT_OBJECT;
- htab->elf.hgot->root.type = bfd_link_hash_defined;
- htab->elf.hgot->root.u.def.value = 0;
- htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
- htab->elf.hgot->def_regular = 1;
- htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
- | STV_HIDDEN);
- }
-
- if (htab->sfpr == NULL)
- /* We don't have any relocs. */
- return TRUE;
-
- /* Provide any missing _save* and _rest* functions. */
- htab->sfpr->size = 0;
- if (!info->relocatable)
- for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
- if (!sfpr_define (info, &funcs[i]))
- return FALSE;
-
- elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
-
- if (htab->sfpr->size == 0)
- htab->sfpr->flags |= SEC_EXCLUDE;
-
- return TRUE;
-}
-
-/* Return true if we have dynamic relocs that apply to read-only sections. */
-
-static bfd_boolean
-readonly_dynrelocs (struct elf_link_hash_entry *h)
-{
- struct ppc_link_hash_entry *eh;
- struct elf_dyn_relocs *p;
-
- eh = (struct ppc_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
-
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- return TRUE;
- }
- return FALSE;
-}
-
-/* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
-
-static bfd_boolean
-ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
-{
- struct ppc_link_hash_table *htab;
- asection *s;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Deal with function syms. */
- if (h->type == STT_FUNC
- || h->type == STT_GNU_IFUNC
- || h->needs_plt)
- {
- /* Clear procedure linkage table information for any symbol that
- won't need a .plt entry. */
- struct plt_entry *ent;
- for (ent = h->plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.refcount > 0)
- break;
- if (ent == NULL
- || (h->type != STT_GNU_IFUNC
- && (SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))))
- {
- h->plt.plist = NULL;
- h->needs_plt = 0;
- }
- else if (abiversion (info->output_bfd) == 2)
- {
- /* After adjust_dynamic_symbol, non_got_ref set in the
- non-shared case means that we have allocated space in
- .dynbss for the symbol and thus dyn_relocs for this
- symbol should be discarded.
- If we get here we know we are making a PLT entry for this
- symbol, and in an executable we'd normally resolve
- relocations against this symbol to the PLT entry. Allow
- dynamic relocs if the reference is weak, and the dynamic
- relocs will not cause text relocation. */
- if (!h->ref_regular_nonweak
- && h->non_got_ref
- && h->type != STT_GNU_IFUNC
- && !readonly_dynrelocs (h))
- h->non_got_ref = 0;
-
- /* If making a plt entry, then we don't need copy relocs. */
- return TRUE;
- }
- }
- else
- h->plt.plist = NULL;
-
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
- {
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS)
- h->non_got_ref = h->u.weakdef->non_got_ref;
- return TRUE;
- }
-
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (info->shared)
- return TRUE;
-
- /* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
- return TRUE;
-
- /* Don't generate a copy reloc for symbols defined in the executable. */
- if (!h->def_dynamic || !h->ref_regular || h->def_regular)
- return TRUE;
-
- /* If we didn't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
- {
- h->non_got_ref = 0;
- return TRUE;
- }
-
- if (h->plt.plist != NULL)
- {
- /* We should never get here, but unfortunately there are versions
- of gcc out there that improperly (for this ABI) put initialized
- function pointers, vtable refs and suchlike in read-only
- sections. Allow them to proceed, but warn that this might
- break at runtime. */
- info->callbacks->einfo
- (_("%P: copy reloc against `%T' requires lazy plt linking; "
- "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
- h->root.root.string);
- }
-
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
-
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
-
- /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
- {
- htab->relbss->size += sizeof (Elf64_External_Rela);
- h->needs_copy = 1;
- }
-
- s = htab->dynbss;
-
- return _bfd_elf_adjust_dynamic_copy (h, s);
-}
-
-/* If given a function descriptor symbol, hide both the function code
- sym and the descriptor. */
-static void
-ppc64_elf_hide_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- bfd_boolean force_local)
-{
- struct ppc_link_hash_entry *eh;
- _bfd_elf_link_hash_hide_symbol (info, h, force_local);
-
- eh = (struct ppc_link_hash_entry *) h;
- if (eh->is_func_descriptor)
- {
- struct ppc_link_hash_entry *fh = eh->oh;
-
- if (fh == NULL)
- {
- const char *p, *q;
- struct ppc_link_hash_table *htab;
- char save;
-
- /* We aren't supposed to use alloca in BFD because on
- systems which do not have alloca the version in libiberty
- calls xmalloc, which might cause the program to crash
- when it runs out of memory. This function doesn't have a
- return status, so there's no way to gracefully return an
- error. So cheat. We know that string[-1] can be safely
- accessed; It's either a string in an ELF string table,
- or allocated in an objalloc structure. */
-
- p = eh->elf.root.root.string - 1;
- save = *p;
- *(char *) p = '.';
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return;
-
- fh = (struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
- *(char *) p = save;
-
- /* Unfortunately, if it so happens that the string we were
- looking for was allocated immediately before this string,
- then we overwrote the string terminator. That's the only
- reason the lookup should fail. */
- if (fh == NULL)
- {
- q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
- while (q >= eh->elf.root.root.string && *q == *p)
- --q, --p;
- if (q < eh->elf.root.root.string && *p == '.')
- fh = (struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
- }
- if (fh != NULL)
- {
- eh->oh = fh;
- fh->oh = eh;
- }
- }
- if (fh != NULL)
- _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
- }
-}
-
-static bfd_boolean
-get_sym_h (struct elf_link_hash_entry **hp,
- Elf_Internal_Sym **symp,
- asection **symsecp,
- unsigned char **tls_maskp,
- Elf_Internal_Sym **locsymsp,
- unsigned long r_symndx,
- bfd *ibfd)
-{
- Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
-
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
- struct elf_link_hash_entry *h;
-
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- h = elf_follow_link (h);
-
- if (hp != NULL)
- *hp = h;
-
- if (symp != NULL)
- *symp = NULL;
-
- if (symsecp != NULL)
- {
- asection *symsec = NULL;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- symsec = h->root.u.def.section;
- *symsecp = symsec;
- }
-
- if (tls_maskp != NULL)
- {
- struct ppc_link_hash_entry *eh;
-
- eh = (struct ppc_link_hash_entry *) h;
- *tls_maskp = &eh->tls_mask;
- }
- }
- else
- {
- Elf_Internal_Sym *sym;
- Elf_Internal_Sym *locsyms = *locsymsp;
-
- if (locsyms == NULL)
- {
- locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
- if (locsyms == NULL)
- locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
- symtab_hdr->sh_info,
- 0, NULL, NULL, NULL);
- if (locsyms == NULL)
- return FALSE;
- *locsymsp = locsyms;
- }
- sym = locsyms + r_symndx;
-
- if (hp != NULL)
- *hp = NULL;
-
- if (symp != NULL)
- *symp = sym;
-
- if (symsecp != NULL)
- *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
-
- if (tls_maskp != NULL)
- {
- struct got_entry **lgot_ents;
- unsigned char *tls_mask;
-
- tls_mask = NULL;
- lgot_ents = elf_local_got_ents (ibfd);
- if (lgot_ents != NULL)
- {
- struct plt_entry **local_plt = (struct plt_entry **)
- (lgot_ents + symtab_hdr->sh_info);
- unsigned char *lgot_masks = (unsigned char *)
- (local_plt + symtab_hdr->sh_info);
- tls_mask = &lgot_masks[r_symndx];
- }
- *tls_maskp = tls_mask;
- }
- }
- return TRUE;
-}
-
-/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
- error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
- type suitable for optimization, and 1 otherwise. */
-
-static int
-get_tls_mask (unsigned char **tls_maskp,
- unsigned long *toc_symndx,
- bfd_vma *toc_addend,
- Elf_Internal_Sym **locsymsp,
- const Elf_Internal_Rela *rel,
- bfd *ibfd)
-{
- unsigned long r_symndx;
- int next_r;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sec;
- bfd_vma off;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
- return 0;
-
- if ((*tls_maskp != NULL && **tls_maskp != 0)
- || sec == NULL
- || ppc64_elf_section_data (sec) == NULL
- || ppc64_elf_section_data (sec)->sec_type != sec_toc)
- return 1;
-
- /* Look inside a TOC section too. */
- if (h != NULL)
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined);
- off = h->root.u.def.value;
- }
- else
- off = sym->st_value;
- off += rel->r_addend;
- BFD_ASSERT (off % 8 == 0);
- r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
- next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
- if (toc_symndx != NULL)
- *toc_symndx = r_symndx;
- if (toc_addend != NULL)
- *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
- if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
- return 0;
- if ((h == NULL || is_static_defined (h))
- && (next_r == -1 || next_r == -2))
- return 1 - next_r;
- return 1;
-}
-
-/* Find (or create) an entry in the tocsave hash table. */
-
-static struct tocsave_entry *
-tocsave_find (struct ppc_link_hash_table *htab,
- enum insert_option insert,
- Elf_Internal_Sym **local_syms,
- const Elf_Internal_Rela *irela,
- bfd *ibfd)
-{
- unsigned long r_indx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- struct tocsave_entry ent, *p;
- hashval_t hash;
- struct tocsave_entry **slot;
-
- r_indx = ELF64_R_SYM (irela->r_info);
- if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
- return NULL;
- if (ent.sec == NULL || ent.sec->output_section == NULL)
- {
- (*_bfd_error_handler)
- (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
- return NULL;
- }
-
- if (h != NULL)
- ent.offset = h->root.u.def.value;
- else
- ent.offset = sym->st_value;
- ent.offset += irela->r_addend;
-
- hash = tocsave_htab_hash (&ent);
- slot = ((struct tocsave_entry **)
- htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
- if (slot == NULL)
- return NULL;
-
- if (*slot == NULL)
- {
- p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
- if (p == NULL)
- return NULL;
- *p = ent;
- *slot = p;
- }
- return *slot;
-}
-
-/* Adjust all global syms defined in opd sections. In gcc generated
- code for the old ABI, these will already have been done. */
-
-static bfd_boolean
-adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
-{
- struct ppc_link_hash_entry *eh;
- asection *sym_sec;
- struct _opd_sec_data *opd;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- return TRUE;
-
- eh = (struct ppc_link_hash_entry *) h;
- if (eh->adjust_done)
- return TRUE;
-
- sym_sec = eh->elf.root.u.def.section;
- opd = get_opd_info (sym_sec);
- if (opd != NULL && opd->adjust != NULL)
- {
- long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
- if (adjust == -1)
- {
- /* This entry has been deleted. */
- asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
- if (dsec == NULL)
- {
- for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
- if (discarded_section (dsec))
- {
- ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
- break;
- }
- }
- eh->elf.root.u.def.value = 0;
- eh->elf.root.u.def.section = dsec;
- }
- else
- eh->elf.root.u.def.value += adjust;
- eh->adjust_done = 1;
- }
- return TRUE;
-}
-
-/* Handles decrementing dynamic reloc counts for the reloc specified by
- R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
- have already been determined. */
-
-static bfd_boolean
-dec_dynrel_count (bfd_vma r_info,
- asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Sym **local_syms,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
-{
- enum elf_ppc64_reloc_type r_type;
- asection *sym_sec = NULL;
-
- /* Can this reloc be dynamic? This switch, and later tests here
- should be kept in sync with the code in check_relocs. */
- r_type = ELF64_R_TYPE (r_info);
- switch (r_type)
- {
- default:
- return TRUE;
-
- case R_PPC64_TPREL16:
- case R_PPC64_TPREL16_LO:
- case R_PPC64_TPREL16_HI:
- case R_PPC64_TPREL16_HA:
- case R_PPC64_TPREL16_DS:
- case R_PPC64_TPREL16_LO_DS:
- case R_PPC64_TPREL16_HIGH:
- case R_PPC64_TPREL16_HIGHA:
- case R_PPC64_TPREL16_HIGHER:
- case R_PPC64_TPREL16_HIGHERA:
- case R_PPC64_TPREL16_HIGHEST:
- case R_PPC64_TPREL16_HIGHESTA:
- if (!info->shared)
- return TRUE;
-
- case R_PPC64_TPREL64:
- case R_PPC64_DTPMOD64:
- case R_PPC64_DTPREL64:
- case R_PPC64_ADDR64:
- case R_PPC64_REL30:
- case R_PPC64_REL32:
- case R_PPC64_REL64:
- case R_PPC64_ADDR14:
- case R_PPC64_ADDR14_BRNTAKEN:
- case R_PPC64_ADDR14_BRTAKEN:
- case R_PPC64_ADDR16:
- case R_PPC64_ADDR16_DS:
- case R_PPC64_ADDR16_HA:
- case R_PPC64_ADDR16_HI:
- case R_PPC64_ADDR16_HIGH:
- case R_PPC64_ADDR16_HIGHA:
- case R_PPC64_ADDR16_HIGHER:
- case R_PPC64_ADDR16_HIGHERA:
- case R_PPC64_ADDR16_HIGHEST:
- case R_PPC64_ADDR16_HIGHESTA:
- case R_PPC64_ADDR16_LO:
- case R_PPC64_ADDR16_LO_DS:
- case R_PPC64_ADDR24:
- case R_PPC64_ADDR32:
- case R_PPC64_UADDR16:
- case R_PPC64_UADDR32:
- case R_PPC64_UADDR64:
- case R_PPC64_TOC:
- break;
- }
-
- if (local_syms != NULL)
- {
- unsigned long r_symndx;
- bfd *ibfd = sec->owner;
-
- r_symndx = ELF64_R_SYM (r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
- return FALSE;
- }
-
- if ((info->shared
- && (must_be_dyn_reloc (info, r_type)
- || (h != NULL
- && (!SYMBOLIC_BIND (info, h)
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (ELIMINATE_COPY_RELOCS
- && !info->shared
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular)))
- ;
- else
- return TRUE;
-
- if (h != NULL)
- {
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **pp;
- pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
-
- /* elf_gc_sweep may have already removed all dyn relocs associated
- with local syms for a given section. Also, symbol flags are
- changed by elf_gc_sweep_symbol, confusing the test above. Don't
- report a dynreloc miscount. */
- if (*pp == NULL && info->gc_sections)
- return TRUE;
-
- while ((p = *pp) != NULL)
- {
- if (p->sec == sec)
- {
- if (!must_be_dyn_reloc (info, r_type))
- p->pc_count -= 1;
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- return TRUE;
- }
- pp = &p->next;
- }
- }
- else
- {
- struct ppc_dyn_relocs *p;
- struct ppc_dyn_relocs **pp;
- void *vpp;
- bfd_boolean is_ifunc;
-
- if (local_syms == NULL)
- sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- if (sym_sec == NULL)
- sym_sec = sec;
-
- vpp = &elf_section_data (sym_sec)->local_dynrel;
- pp = (struct ppc_dyn_relocs **) vpp;
-
- if (*pp == NULL && info->gc_sections)
- return TRUE;
-
- is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
- while ((p = *pp) != NULL)
- {
- if (p->sec == sec && p->ifunc == is_ifunc)
- {
- p->count -= 1;
- if (p->count == 0)
- *pp = p->next;
- return TRUE;
- }
- pp = &p->next;
- }
- }
-
- info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
- sec->owner, sec);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
-}
-
-/* Remove unused Official Procedure Descriptor entries. Currently we
- only remove those associated with functions in discarded link-once
- sections, or weakly defined functions that have been overridden. It
- would be possible to remove many more entries for statically linked
- applications. */
-
-bfd_boolean
-ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
-{
- bfd *ibfd;
- bfd_boolean some_edited = FALSE;
- asection *need_pad = NULL;
-
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- asection *sec;
- Elf_Internal_Rela *relstart, *rel, *relend;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Sym *local_syms;
- bfd_vma offset;
- struct _opd_sec_data *opd;
- bfd_boolean need_edit, add_aux_fields;
- bfd_size_type cnt_16b = 0;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- sec = bfd_get_section_by_name (ibfd, ".opd");
- if (sec == NULL || sec->size == 0)
- continue;
-
- if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
- continue;
-
- if (sec->output_section == bfd_abs_section_ptr)
- continue;
-
- /* Look through the section relocs. */
- if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
- continue;
-
- local_syms = NULL;
- symtab_hdr = &elf_symtab_hdr (ibfd);
-
- /* Read the relocations. */
- relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
- info->keep_memory);
- if (relstart == NULL)
- return FALSE;
-
- /* First run through the relocs to check they are sane, and to
- determine whether we need to edit this opd section. */
- need_edit = FALSE;
- need_pad = sec;
- offset = 0;
- relend = relstart + sec->reloc_count;
- for (rel = relstart; rel < relend; )
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
-
- /* .opd contains a regular array of 16 or 24 byte entries. We're
- only interested in the reloc pointing to a function entry
- point. */
- if (rel->r_offset != offset
- || rel + 1 >= relend
- || (rel + 1)->r_offset != offset + 8)
- {
- /* If someone messes with .opd alignment then after a
- "ld -r" we might have padding in the middle of .opd.
- Also, there's nothing to prevent someone putting
- something silly in .opd with the assembler. No .opd
- optimization for them! */
- broken_opd:
- (*_bfd_error_handler)
- (_("%B: .opd is not a regular array of opd entries"), ibfd);
- need_edit = FALSE;
- break;
- }
-
- if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
- || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
- {
- (*_bfd_error_handler)
- (_("%B: unexpected reloc type %u in .opd section"),
- ibfd, r_type);
- need_edit = FALSE;
- break;
- }
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- goto error_ret;
-
- if (sym_sec == NULL || sym_sec->owner == NULL)
- {
- const char *sym_name;
- if (h != NULL)
- sym_name = h->root.root.string;
- else
- sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
- sym_sec);
-
- (*_bfd_error_handler)
- (_("%B: undefined sym `%s' in .opd section"),
- ibfd, sym_name);
- need_edit = FALSE;
- break;
- }
-
- /* opd entries are always for functions defined in the
- current input bfd. If the symbol isn't defined in the
- input bfd, then we won't be using the function in this
- bfd; It must be defined in a linkonce section in another
- bfd, or is weak. It's also possible that we are
- discarding the function due to a linker script /DISCARD/,
- which we test for via the output_section. */
- if (sym_sec->owner != ibfd
- || sym_sec->output_section == bfd_abs_section_ptr)
- need_edit = TRUE;
-
- rel += 2;
- if (rel == relend
- || (rel + 1 == relend && rel->r_offset == offset + 16))
- {
- if (sec->size == offset + 24)
- {
- need_pad = NULL;
- break;
- }
- if (rel == relend && sec->size == offset + 16)
- {
- cnt_16b++;
- break;
- }
- goto broken_opd;
- }
-
- if (rel->r_offset == offset + 24)
- offset += 24;
- else if (rel->r_offset != offset + 16)
- goto broken_opd;
- else if (rel + 1 < relend
- && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
- {
- offset += 16;
- cnt_16b++;
- }
- else if (rel + 2 < relend
- && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
- {
- offset += 24;
- rel += 1;
- }
- else
- goto broken_opd;
- }
-
- add_aux_fields = non_overlapping && cnt_16b > 0;
-
- if (need_edit || add_aux_fields)
- {
- Elf_Internal_Rela *write_rel;
- Elf_Internal_Shdr *rel_hdr;
- bfd_byte *rptr, *wptr;
- bfd_byte *new_contents;
- bfd_boolean skip;
- long opd_ent_size;
- bfd_size_type amt;
-
- new_contents = NULL;
- amt = sec->size * sizeof (long) / 8;
- opd = &ppc64_elf_section_data (sec)->u.opd;
- opd->adjust = bfd_zalloc (sec->owner, amt);
- if (opd->adjust == NULL)
- return FALSE;
- ppc64_elf_section_data (sec)->sec_type = sec_opd;
-
- /* This seems a waste of time as input .opd sections are all
- zeros as generated by gcc, but I suppose there's no reason
- this will always be so. We might start putting something in
- the third word of .opd entries. */
- if ((sec->flags & SEC_IN_MEMORY) == 0)
- {
- bfd_byte *loc;
- if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
- {
- if (loc != NULL)
- free (loc);
- error_ret:
- if (local_syms != NULL
- && symtab_hdr->contents != (unsigned char *) local_syms)
- free (local_syms);
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- return FALSE;
- }
- sec->contents = loc;
- sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
- }
-
- elf_section_data (sec)->relocs = relstart;
-
- new_contents = sec->contents;
- if (add_aux_fields)
- {
- new_contents = bfd_malloc (sec->size + cnt_16b * 8);
- if (new_contents == NULL)
- return FALSE;
- need_pad = FALSE;
- }
- wptr = new_contents;
- rptr = sec->contents;
-
- write_rel = relstart;
- skip = FALSE;
- offset = 0;
- opd_ent_size = 0;
- for (rel = relstart; rel < relend; rel++)
- {
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- goto error_ret;
-
- if (rel->r_offset == offset)
- {
- struct ppc_link_hash_entry *fdh = NULL;
-
- /* See if the .opd entry is full 24 byte or
- 16 byte (with fd_aux entry overlapped with next
- fd_func). */
- opd_ent_size = 24;
- if ((rel + 2 == relend && sec->size == offset + 16)
- || (rel + 3 < relend
- && rel[2].r_offset == offset + 16
- && rel[3].r_offset == offset + 24
- && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
- && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
- opd_ent_size = 16;
-
- if (h != NULL
- && h->root.root.string[0] == '.')
- {
- struct ppc_link_hash_table *htab;
-
- htab = ppc_hash_table (info);
- if (htab != NULL)
- fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
- htab);
- if (fdh != NULL
- && fdh->elf.root.type != bfd_link_hash_defined
- && fdh->elf.root.type != bfd_link_hash_defweak)
- fdh = NULL;
- }
-
- skip = (sym_sec->owner != ibfd
- || sym_sec->output_section == bfd_abs_section_ptr);
- if (skip)
- {
- if (fdh != NULL && sym_sec->owner == ibfd)
- {
- /* Arrange for the function descriptor sym
- to be dropped. */
- fdh->elf.root.u.def.value = 0;
- fdh->elf.root.u.def.section = sym_sec;
- }
- opd->adjust[rel->r_offset / 8] = -1;
- }
- else
- {
- /* We'll be keeping this opd entry. */
-
- if (fdh != NULL)
- {
- /* Redefine the function descriptor symbol to
- this location in the opd section. It is
- necessary to update the value here rather
- than using an array of adjustments as we do
- for local symbols, because various places
- in the generic ELF code use the value
- stored in u.def.value. */
- fdh->elf.root.u.def.value = wptr - new_contents;
- fdh->adjust_done = 1;
- }
-
- /* Local syms are a bit tricky. We could
- tweak them as they can be cached, but
- we'd need to look through the local syms
- for the function descriptor sym which we
- don't have at the moment. So keep an
- array of adjustments. */
- opd->adjust[rel->r_offset / 8]
- = (wptr - new_contents) - (rptr - sec->contents);
-
- if (wptr != rptr)
- memcpy (wptr, rptr, opd_ent_size);
- wptr += opd_ent_size;
- if (add_aux_fields && opd_ent_size == 16)
- {
- memset (wptr, '\0', 8);
- wptr += 8;
- }
- }
- rptr += opd_ent_size;
- offset += opd_ent_size;
- }
-
- if (skip)
- {
- if (!NO_OPD_RELOCS
- && !info->relocatable
- && !dec_dynrel_count (rel->r_info, sec, info,
- NULL, h, sym))
- goto error_ret;
- }
- else
- {
- /* We need to adjust any reloc offsets to point to the
- new opd entries. While we're at it, we may as well
- remove redundant relocs. */
- rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
- if (write_rel != rel)
- memcpy (write_rel, rel, sizeof (*rel));
- ++write_rel;
- }
- }
-
- sec->size = wptr - new_contents;
- sec->reloc_count = write_rel - relstart;
- if (add_aux_fields)
- {
- free (sec->contents);
- sec->contents = new_contents;
- }
-
- /* Fudge the header size too, as this is used later in
- elf_bfd_final_link if we are emitting relocs. */
- rel_hdr = _bfd_elf_single_rel_hdr (sec);
- rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
- some_edited = TRUE;
- }
- else if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
-
- if (local_syms != NULL
- && symtab_hdr->contents != (unsigned char *) local_syms)
- {
- if (!info->keep_memory)
- free (local_syms);
- else
- symtab_hdr->contents = (unsigned char *) local_syms;
- }
- }
-
- if (some_edited)
- elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
-
- /* If we are doing a final link and the last .opd entry is just 16 byte
- long, add a 8 byte padding after it. */
- if (need_pad != NULL && !info->relocatable)
- {
- bfd_byte *p;
-
- if ((need_pad->flags & SEC_IN_MEMORY) == 0)
- {
- BFD_ASSERT (need_pad->size > 0);
-
- p = bfd_malloc (need_pad->size + 8);
- if (p == NULL)
- return FALSE;
-
- if (! bfd_get_section_contents (need_pad->owner, need_pad,
- p, 0, need_pad->size))
- return FALSE;
-
- need_pad->contents = p;
- need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
- }
- else
- {
- p = bfd_realloc (need_pad->contents, need_pad->size + 8);
- if (p == NULL)
- return FALSE;
-
- need_pad->contents = p;
- }
-
- memset (need_pad->contents + need_pad->size, 0, 8);
- need_pad->size += 8;
- }
-
- return TRUE;
-}
-
-/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
-
-asection *
-ppc64_elf_tls_setup (struct bfd_link_info *info,
- int no_tls_get_addr_opt,
- int *no_multi_toc)
-{
- struct ppc_link_hash_table *htab;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return NULL;
-
- if (abiversion (info->output_bfd) == 1)
- htab->opd_abi = 1;
-
- if (*no_multi_toc)
- htab->do_multi_toc = 0;
- else if (!htab->do_multi_toc)
- *no_multi_toc = 1;
-
- htab->tls_get_addr = ((struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
- FALSE, FALSE, TRUE));
- /* Move dynamic linking info to the function descriptor sym. */
- if (htab->tls_get_addr != NULL)
- func_desc_adjust (&htab->tls_get_addr->elf, info);
- htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
- elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
- FALSE, FALSE, TRUE));
- if (!no_tls_get_addr_opt)
- {
- struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
-
- opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
- FALSE, FALSE, TRUE);
- if (opt != NULL)
- func_desc_adjust (opt, info);
- opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
- FALSE, FALSE, TRUE);
- if (opt_fd != NULL
- && (opt_fd->root.type == bfd_link_hash_defined
- || opt_fd->root.type == bfd_link_hash_defweak))
- {
- /* If glibc supports an optimized __tls_get_addr call stub,
- signalled by the presence of __tls_get_addr_opt, and we'll
- be calling __tls_get_addr via a plt call stub, then
- make __tls_get_addr point to __tls_get_addr_opt. */
- tga_fd = &htab->tls_get_addr_fd->elf;
- if (htab->elf.dynamic_sections_created
- && tga_fd != NULL
- && (tga_fd->type == STT_FUNC
- || tga_fd->needs_plt)
- && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
- || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
- && tga_fd->root.type == bfd_link_hash_undefweak)))
- {
- struct plt_entry *ent;
-
- for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.refcount > 0)
- break;
- if (ent != NULL)
- {
- tga_fd->root.type = bfd_link_hash_indirect;
- tga_fd->root.u.i.link = &opt_fd->root;
- ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
- if (opt_fd->dynindx != -1)
- {
- /* Use __tls_get_addr_opt in dynamic relocations. */
- opt_fd->dynindx = -1;
- _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
- opt_fd->dynstr_index);
- if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
- return NULL;
- }
- htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
- tga = &htab->tls_get_addr->elf;
- if (opt != NULL && tga != NULL)
- {
- tga->root.type = bfd_link_hash_indirect;
- tga->root.u.i.link = &opt->root;
- ppc64_elf_copy_indirect_symbol (info, opt, tga);
- _bfd_elf_link_hash_hide_symbol (info, opt,
- tga->forced_local);
- htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
- }
- htab->tls_get_addr_fd->oh = htab->tls_get_addr;
- htab->tls_get_addr_fd->is_func_descriptor = 1;
- if (htab->tls_get_addr != NULL)
- {
- htab->tls_get_addr->oh = htab->tls_get_addr_fd;
- htab->tls_get_addr->is_func = 1;
- }
- }
- }
- }
- else
- no_tls_get_addr_opt = TRUE;
- }
- htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
- return _bfd_elf_tls_setup (info->output_bfd, info);
-}
-
-/* Return TRUE iff REL is a branch reloc with a global symbol matching
- HASH1 or HASH2. */
-
-static bfd_boolean
-branch_reloc_hash_match (const bfd *ibfd,
- const Elf_Internal_Rela *rel,
- const struct ppc_link_hash_entry *hash1,
- const struct ppc_link_hash_entry *hash2)
-{
- Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
- enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
- unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
-
- if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
- {
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
- struct elf_link_hash_entry *h;
-
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- h = elf_follow_link (h);
- if (h == &hash1->elf || h == &hash2->elf)
- return TRUE;
- }
- return FALSE;
-}
-
-/* Run through all the TLS relocs looking for optimization
- opportunities. The linker has been hacked (see ppc64elf.em) to do
- a preliminary section layout so that we know the TLS segment
- offsets. We can't optimize earlier because some optimizations need
- to know the tp offset, and we need to optimize before allocating
- dynamic relocations. */
-
-bfd_boolean
-ppc64_elf_tls_optimize (struct bfd_link_info *info)
-{
- bfd *ibfd;
- asection *sec;
- struct ppc_link_hash_table *htab;
- unsigned char *toc_ref;
- int pass;
-
- if (info->relocatable || !info->executable)
- return TRUE;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Make two passes over the relocs. On the first pass, mark toc
- entries involved with tls relocs, and check that tls relocs
- involved in setting up a tls_get_addr call are indeed followed by
- such a call. If they are not, we can't do any tls optimization.
- On the second pass twiddle tls_mask flags to notify
- relocate_section that optimization can be done, and adjust got
- and plt refcounts. */
- toc_ref = NULL;
- for (pass = 0; pass < 2; ++pass)
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- Elf_Internal_Sym *locsyms = NULL;
- asection *toc = bfd_get_section_by_name (ibfd, ".toc");
-
- for (sec = ibfd->sections; sec != NULL; sec = sec->next)
- if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
- {
- Elf_Internal_Rela *relstart, *rel, *relend;
- bfd_boolean found_tls_get_addr_arg = 0;
-
- /* Read the relocations. */
- relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
- info->keep_memory);
- if (relstart == NULL)
- return FALSE;
-
- relend = relstart + sec->reloc_count;
- for (rel = relstart; rel < relend; rel++)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sym_sec;
- unsigned char *tls_mask;
- unsigned char tls_set, tls_clear, tls_type = 0;
- bfd_vma value;
- bfd_boolean ok_tprel, is_local;
- long toc_ref_index = 0;
- int expecting_tls_get_addr = 0;
- bfd_boolean ret = FALSE;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
- r_symndx, ibfd))
- {
- err_free_rel:
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- if (toc_ref != NULL)
- free (toc_ref);
- if (locsyms != NULL
- && (elf_symtab_hdr (ibfd).contents
- != (unsigned char *) locsyms))
- free (locsyms);
- return ret;
- }
-
- if (h != NULL)
- {
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- value = h->root.u.def.value;
- else if (h->root.type == bfd_link_hash_undefweak)
- value = 0;
- else
- {
- found_tls_get_addr_arg = 0;
- continue;
- }
- }
- else
- /* Symbols referenced by TLS relocs must be of type
- STT_TLS. So no need for .opd local sym adjust. */
- value = sym->st_value;
-
- ok_tprel = FALSE;
- is_local = FALSE;
- if (h == NULL
- || !h->def_dynamic)
- {
- is_local = TRUE;
- if (h != NULL
- && h->root.type == bfd_link_hash_undefweak)
- ok_tprel = TRUE;
- else
- {
- value += sym_sec->output_offset;
- value += sym_sec->output_section->vma;
- value -= htab->elf.tls_sec->vma;
- ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
- < (bfd_vma) 1 << 32);
- }
- }
-
- r_type = ELF64_R_TYPE (rel->r_info);
- /* If this section has old-style __tls_get_addr calls
- without marker relocs, then check that each
- __tls_get_addr call reloc is preceded by a reloc
- that conceivably belongs to the __tls_get_addr arg
- setup insn. If we don't find matching arg setup
- relocs, don't do any tls optimization. */
- if (pass == 0
- && sec->has_tls_get_addr_call
- && h != NULL
- && (h == &htab->tls_get_addr->elf
- || h == &htab->tls_get_addr_fd->elf)
- && !found_tls_get_addr_arg
- && is_branch_reloc (r_type))
- {
- info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
- "TLS optimization disabled\n"),
- ibfd, sec, rel->r_offset);
- ret = TRUE;
- goto err_free_rel;
- }
-
- found_tls_get_addr_arg = 0;
- switch (r_type)
- {
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
- expecting_tls_get_addr = 1;
- found_tls_get_addr_arg = 1;
- /* Fall thru */
-
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSLD16_HA:
- /* These relocs should never be against a symbol
- defined in a shared lib. Leave them alone if
- that turns out to be the case. */
- if (!is_local)
- continue;
-
- /* LD -> LE */
- tls_set = 0;
- tls_clear = TLS_LD;
- tls_type = TLS_TLS | TLS_LD;
- break;
-
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
- expecting_tls_get_addr = 1;
- found_tls_get_addr_arg = 1;
- /* Fall thru */
-
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TLSGD16_HA:
- if (ok_tprel)
- /* GD -> LE */
- tls_set = 0;
- else
- /* GD -> IE */
- tls_set = TLS_TLS | TLS_TPRELGD;
- tls_clear = TLS_GD;
- tls_type = TLS_TLS | TLS_GD;
- break;
-
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_TPREL16_HA:
- if (ok_tprel)
- {
- /* IE -> LE */
- tls_set = 0;
- tls_clear = TLS_TPREL;
- tls_type = TLS_TLS | TLS_TPREL;
- break;
- }
- continue;
-
- case R_PPC64_TLSGD:
- case R_PPC64_TLSLD:
- found_tls_get_addr_arg = 1;
- /* Fall thru */
-
- case R_PPC64_TLS:
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- if (sym_sec == NULL || sym_sec != toc)
- continue;
-
- /* Mark this toc entry as referenced by a TLS
- code sequence. We can do that now in the
- case of R_PPC64_TLS, and after checking for
- tls_get_addr for the TOC16 relocs. */
- if (toc_ref == NULL)
- toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
- if (toc_ref == NULL)
- goto err_free_rel;
-
- if (h != NULL)
- value = h->root.u.def.value;
- else
- value = sym->st_value;
- value += rel->r_addend;
- BFD_ASSERT (value < toc->size && value % 8 == 0);
- toc_ref_index = (value + toc->output_offset) / 8;
- if (r_type == R_PPC64_TLS
- || r_type == R_PPC64_TLSGD
- || r_type == R_PPC64_TLSLD)
- {
- toc_ref[toc_ref_index] = 1;
- continue;
- }
-
- if (pass != 0 && toc_ref[toc_ref_index] == 0)
- continue;
-
- tls_set = 0;
- tls_clear = 0;
- expecting_tls_get_addr = 2;
- break;
-
- case R_PPC64_TPREL64:
- if (pass == 0
- || sec != toc
- || toc_ref == NULL
- || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
- continue;
- if (ok_tprel)
- {
- /* IE -> LE */
- tls_set = TLS_EXPLICIT;
- tls_clear = TLS_TPREL;
- break;
- }
- continue;
-
- case R_PPC64_DTPMOD64:
- if (pass == 0
- || sec != toc
- || toc_ref == NULL
- || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
- continue;
- if (rel + 1 < relend
- && (rel[1].r_info
- == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
- && rel[1].r_offset == rel->r_offset + 8)
- {
- if (ok_tprel)
- /* GD -> LE */
- tls_set = TLS_EXPLICIT | TLS_GD;
- else
- /* GD -> IE */
- tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
- tls_clear = TLS_GD;
- }
- else
- {
- if (!is_local)
- continue;
-
- /* LD -> LE */
- tls_set = TLS_EXPLICIT;
- tls_clear = TLS_LD;
- }
- break;
-
- default:
- continue;
- }
-
- if (pass == 0)
- {
- if (!expecting_tls_get_addr
- || !sec->has_tls_get_addr_call)
- continue;
-
- if (rel + 1 < relend
- && branch_reloc_hash_match (ibfd, rel + 1,
- htab->tls_get_addr,
- htab->tls_get_addr_fd))
- {
- if (expecting_tls_get_addr == 2)
- {
- /* Check for toc tls entries. */
- unsigned char *toc_tls;
- int retval;
-
- retval = get_tls_mask (&toc_tls, NULL, NULL,
- &locsyms,
- rel, ibfd);
- if (retval == 0)
- goto err_free_rel;
- if (toc_tls != NULL)
- {
- if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
- found_tls_get_addr_arg = 1;
- if (retval > 1)
- toc_ref[toc_ref_index] = 1;
- }
- }
- continue;
- }
-
- if (expecting_tls_get_addr != 1)
- continue;
-
- /* Uh oh, we didn't find the expected call. We
- could just mark this symbol to exclude it
- from tls optimization but it's safer to skip
- the entire optimization. */
- info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
- "TLS optimization disabled\n"),
- ibfd, sec, rel->r_offset);
- ret = TRUE;
- goto err_free_rel;
- }
-
- if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
- {
- struct plt_entry *ent;
- for (ent = htab->tls_get_addr->elf.plt.plist;
- ent != NULL;
- ent = ent->next)
- if (ent->addend == 0)
- {
- if (ent->plt.refcount > 0)
- {
- ent->plt.refcount -= 1;
- expecting_tls_get_addr = 0;
- }
- break;
- }
- }
-
- if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
- {
- struct plt_entry *ent;
- for (ent = htab->tls_get_addr_fd->elf.plt.plist;
- ent != NULL;
- ent = ent->next)
- if (ent->addend == 0)
- {
- if (ent->plt.refcount > 0)
- ent->plt.refcount -= 1;
- break;
- }
- }
-
- if (tls_clear == 0)
- continue;
-
- if ((tls_set & TLS_EXPLICIT) == 0)
- {
- struct got_entry *ent;
-
- /* Adjust got entry for this reloc. */
- if (h != NULL)
- ent = h->got.glist;
- else
- ent = elf_local_got_ents (ibfd)[r_symndx];
-
- for (; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend
- && ent->owner == ibfd
- && ent->tls_type == tls_type)
- break;
- if (ent == NULL)
- abort ();
-
- if (tls_set == 0)
- {
- /* We managed to get rid of a got entry. */
- if (ent->got.refcount > 0)
- ent->got.refcount -= 1;
- }
- }
- else
- {
- /* If we got rid of a DTPMOD/DTPREL reloc pair then
- we'll lose one or two dyn relocs. */
- if (!dec_dynrel_count (rel->r_info, sec, info,
- NULL, h, sym))
- return FALSE;
-
- if (tls_set == (TLS_EXPLICIT | TLS_GD))
- {
- if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
- NULL, h, sym))
- return FALSE;
- }
- }
-
- *tls_mask |= tls_set;
- *tls_mask &= ~tls_clear;
- }
-
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- }
-
- if (locsyms != NULL
- && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
- {
- if (!info->keep_memory)
- free (locsyms);
- else
- elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
- }
- }
-
- if (toc_ref != NULL)
- free (toc_ref);
- return TRUE;
-}
-
-/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
- the values of any global symbols in a toc section that has been
- edited. Globals in toc sections should be a rarity, so this function
- sets a flag if any are found in toc sections other than the one just
- edited, so that futher hash table traversals can be avoided. */
-
-struct adjust_toc_info
-{
- asection *toc;
- unsigned long *skip;
- bfd_boolean global_toc_syms;
-};
-
-enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
-
-static bfd_boolean
-adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
-{
- struct ppc_link_hash_entry *eh;
- struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
- unsigned long i;
-
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- return TRUE;
-
- eh = (struct ppc_link_hash_entry *) h;
- if (eh->adjust_done)
- return TRUE;
-
- if (eh->elf.root.u.def.section == toc_inf->toc)
- {
- if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
- i = toc_inf->toc->rawsize >> 3;
- else
- i = eh->elf.root.u.def.value >> 3;
-
- if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
- {
- (*_bfd_error_handler)
- (_("%s defined on removed toc entry"), eh->elf.root.root.string);
- do
- ++i;
- while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
- eh->elf.root.u.def.value = (bfd_vma) i << 3;
- }
-
- eh->elf.root.u.def.value -= toc_inf->skip[i];
- eh->adjust_done = 1;
- }
- else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
- toc_inf->global_toc_syms = TRUE;
-
- return TRUE;
-}
-
-/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
-
-static bfd_boolean
-ok_lo_toc_insn (unsigned int insn)
-{
- return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
- || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
- || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
- || (insn & (0x3f << 26)) == 36u << 26 /* stw */
- || (insn & (0x3f << 26)) == 38u << 26 /* stb */
- || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
- || (insn & (0x3f << 26)) == 42u << 26 /* lha */
- || (insn & (0x3f << 26)) == 44u << 26 /* sth */
- || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
- || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
- || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
- || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
- || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
- || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
- || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
- && (insn & 3) != 1)
- || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
- && ((insn & 3) == 0 || (insn & 3) == 3))
- || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
-}
-
-/* Examine all relocs referencing .toc sections in order to remove
- unused .toc entries. */
-
-bfd_boolean
-ppc64_elf_edit_toc (struct bfd_link_info *info)
-{
- bfd *ibfd;
- struct adjust_toc_info toc_inf;
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- htab->do_toc_opt = 1;
- toc_inf.global_toc_syms = TRUE;
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- asection *toc, *sec;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Sym *local_syms;
- Elf_Internal_Rela *relstart, *rel, *toc_relocs;
- unsigned long *skip, *drop;
- unsigned char *used;
- unsigned char *keep, last, some_unused;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- toc = bfd_get_section_by_name (ibfd, ".toc");
- if (toc == NULL
- || toc->size == 0
- || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
- || discarded_section (toc))
- continue;
-
- toc_relocs = NULL;
- local_syms = NULL;
- symtab_hdr = &elf_symtab_hdr (ibfd);
-
- /* Look at sections dropped from the final link. */
- skip = NULL;
- relstart = NULL;
- for (sec = ibfd->sections; sec != NULL; sec = sec->next)
- {
- if (sec->reloc_count == 0
- || !discarded_section (sec)
- || get_opd_info (sec)
- || (sec->flags & SEC_ALLOC) == 0
- || (sec->flags & SEC_DEBUGGING) != 0)
- continue;
-
- relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
- if (relstart == NULL)
- goto error_ret;
-
- /* Run through the relocs to see which toc entries might be
- unused. */
- for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- bfd_vma val;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- switch (r_type)
- {
- default:
- continue;
-
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_HA:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- break;
- }
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- goto error_ret;
-
- if (sym_sec != toc)
- continue;
-
- if (h != NULL)
- val = h->root.u.def.value;
- else
- val = sym->st_value;
- val += rel->r_addend;
-
- if (val >= toc->size)
- continue;
-
- /* Anything in the toc ought to be aligned to 8 bytes.
- If not, don't mark as unused. */
- if (val & 7)
- continue;
-
- if (skip == NULL)
- {
- skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
- if (skip == NULL)
- goto error_ret;
- }
-
- skip[val >> 3] = ref_from_discarded;
- }
-
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- }
-
- /* For largetoc loads of address constants, we can convert
- . addis rx,2,addr@got@ha
- . ld ry,addr@got@l(rx)
- to
- . addis rx,2,addr@toc@ha
- . addi ry,rx,addr@toc@l
- when addr is within 2G of the toc pointer. This then means
- that the word storing "addr" in the toc is no longer needed. */
-
- if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
- && toc->output_section->rawsize < (bfd_vma) 1 << 31
- && toc->reloc_count != 0)
- {
- /* Read toc relocs. */
- toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
- info->keep_memory);
- if (toc_relocs == NULL)
- goto error_ret;
-
- for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- bfd_vma val, addr;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_type != R_PPC64_ADDR64)
- continue;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- goto error_ret;
-
- if (sym_sec == NULL
- || discarded_section (sym_sec))
- continue;
-
- if (!SYMBOL_REFERENCES_LOCAL (info, h))
- continue;
-
- if (h != NULL)
- {
- if (h->type == STT_GNU_IFUNC)
- continue;
- val = h->root.u.def.value;
- }
- else
- {
- if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- continue;
- val = sym->st_value;
- }
- val += rel->r_addend;
- val += sym_sec->output_section->vma + sym_sec->output_offset;
-
- /* We don't yet know the exact toc pointer value, but we
- know it will be somewhere in the toc section. Don't
- optimize if the difference from any possible toc
- pointer is outside [ff..f80008000, 7fff7fff]. */
- addr = toc->output_section->vma + TOC_BASE_OFF;
- if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
- continue;
-
- addr = toc->output_section->vma + toc->output_section->rawsize;
- if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
- continue;
-
- if (skip == NULL)
- {
- skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
- if (skip == NULL)
- goto error_ret;
- }
-
- skip[rel->r_offset >> 3]
- |= can_optimize | ((rel - toc_relocs) << 2);
- }
- }
-
- if (skip == NULL)
- continue;
-
- used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
- if (used == NULL)
- {
- error_ret:
- if (local_syms != NULL
- && symtab_hdr->contents != (unsigned char *) local_syms)
- free (local_syms);
- if (sec != NULL
- && relstart != NULL
- && elf_section_data (sec)->relocs != relstart)
- free (relstart);
- if (toc_relocs != NULL
- && elf_section_data (toc)->relocs != toc_relocs)
- free (toc_relocs);
- if (skip != NULL)
- free (skip);
- return FALSE;
- }
-
- /* Now check all kept sections that might reference the toc.
- Check the toc itself last. */
- for (sec = (ibfd->sections == toc && toc->next ? toc->next
- : ibfd->sections);
- sec != NULL;
- sec = (sec == toc ? NULL
- : sec->next == NULL ? toc
- : sec->next == toc && toc->next ? toc->next
- : sec->next))
- {
- int repeat;
-
- if (sec->reloc_count == 0
- || discarded_section (sec)
- || get_opd_info (sec)
- || (sec->flags & SEC_ALLOC) == 0
- || (sec->flags & SEC_DEBUGGING) != 0)
- continue;
-
- relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
- info->keep_memory);
- if (relstart == NULL)
- goto error_ret;
-
- /* Mark toc entries referenced as used. */
- do
- {
- repeat = 0;
- for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- bfd_vma val;
- enum {no_check, check_lo, check_ha} insn_check;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- switch (r_type)
- {
- default:
- insn_check = no_check;
- break;
-
- case R_PPC64_GOT_TLSLD16_HA:
- case R_PPC64_GOT_TLSGD16_HA:
- case R_PPC64_GOT_TPREL16_HA:
- case R_PPC64_GOT_DTPREL16_HA:
- case R_PPC64_GOT16_HA:
- case R_PPC64_TOC16_HA:
- insn_check = check_ha;
- break;
-
- case R_PPC64_GOT_TLSLD16_LO:
- case R_PPC64_GOT_TLSGD16_LO:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_LO_DS:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_LO_DS:
- insn_check = check_lo;
- break;
- }
-
- if (insn_check != no_check)
- {
- bfd_vma off = rel->r_offset & ~3;
- unsigned char buf[4];
- unsigned int insn;
-
- if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
- {
- free (used);
- goto error_ret;
- }
- insn = bfd_get_32 (ibfd, buf);
- if (insn_check == check_lo
- ? !ok_lo_toc_insn (insn)
- : ((insn & ((0x3f << 26) | 0x1f << 16))
- != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
- {
- char str[12];
-
- ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
- sprintf (str, "%#08x", insn);
- info->callbacks->einfo
- (_("%P: %H: toc optimization is not supported for"
- " %s instruction.\n"),
- ibfd, sec, rel->r_offset & ~3, str);
- }
- }
-
- switch (r_type)
- {
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_HA:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- /* In case we're taking addresses of toc entries. */
- case R_PPC64_ADDR64:
- break;
-
- default:
- continue;
- }
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- {
- free (used);
- goto error_ret;
- }
-
- if (sym_sec != toc)
- continue;
-
- if (h != NULL)
- val = h->root.u.def.value;
- else
- val = sym->st_value;
- val += rel->r_addend;
-
- if (val >= toc->size)
- continue;
-
- if ((skip[val >> 3] & can_optimize) != 0)
- {
- bfd_vma off;
- unsigned char opc;
-
- switch (r_type)
- {
- case R_PPC64_TOC16_HA:
- break;
-
- case R_PPC64_TOC16_LO_DS:
- off = rel->r_offset;
- off += (bfd_big_endian (ibfd) ? -2 : 3);
- if (!bfd_get_section_contents (ibfd, sec, &opc,
- off, 1))
- {
- free (used);
- goto error_ret;
- }
- if ((opc & (0x3f << 2)) == (58u << 2))
- break;
- /* Fall thru */
-
- default:
- /* Wrong sort of reloc, or not a ld. We may
- as well clear ref_from_discarded too. */
- skip[val >> 3] = 0;
- }
- }
-
- if (sec != toc)
- used[val >> 3] = 1;
- /* For the toc section, we only mark as used if this
- entry itself isn't unused. */
- else if ((used[rel->r_offset >> 3]
- || !(skip[rel->r_offset >> 3] & ref_from_discarded))
- && !used[val >> 3])
- {
- /* Do all the relocs again, to catch reference
- chains. */
- repeat = 1;
- used[val >> 3] = 1;
- }
- }
- }
- while (repeat);
-
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- }
-
- /* Merge the used and skip arrays. Assume that TOC
- doublewords not appearing as either used or unused belong
- to to an entry more than one doubleword in size. */
- for (drop = skip, keep = used, last = 0, some_unused = 0;
- drop < skip + (toc->size + 7) / 8;
- ++drop, ++keep)
- {
- if (*keep)
- {
- *drop &= ~ref_from_discarded;
- if ((*drop & can_optimize) != 0)
- some_unused = 1;
- last = 0;
- }
- else if ((*drop & ref_from_discarded) != 0)
- {
- some_unused = 1;
- last = ref_from_discarded;
- }
- else
- *drop = last;
- }
-
- free (used);
-
- if (some_unused)
- {
- bfd_byte *contents, *src;
- unsigned long off;
- Elf_Internal_Sym *sym;
- bfd_boolean local_toc_syms = FALSE;
-
- /* Shuffle the toc contents, and at the same time convert the
- skip array from booleans into offsets. */
- if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
- goto error_ret;
-
- elf_section_data (toc)->this_hdr.contents = contents;
-
- for (src = contents, off = 0, drop = skip;
- src < contents + toc->size;
- src += 8, ++drop)
- {
- if ((*drop & (can_optimize | ref_from_discarded)) != 0)
- off += 8;
- else if (off != 0)
- {
- *drop = off;
- memcpy (src - off, src, 8);
- }
- }
- *drop = off;
- toc->rawsize = toc->size;
- toc->size = src - contents - off;
-
- /* Adjust addends for relocs against the toc section sym,
- and optimize any accesses we can. */
- for (sec = ibfd->sections; sec != NULL; sec = sec->next)
- {
- if (sec->reloc_count == 0
- || discarded_section (sec))
- continue;
-
- relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
- info->keep_memory);
- if (relstart == NULL)
- goto error_ret;
-
- for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- asection *sym_sec;
- struct elf_link_hash_entry *h;
- bfd_vma val;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- switch (r_type)
- {
- default:
- continue;
-
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_HA:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- case R_PPC64_ADDR64:
- break;
- }
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_symndx, ibfd))
- goto error_ret;
-
- if (sym_sec != toc)
- continue;
-
- if (h != NULL)
- val = h->root.u.def.value;
- else
- {
- val = sym->st_value;
- if (val != 0)
- local_toc_syms = TRUE;
- }
-
- val += rel->r_addend;
-
- if (val > toc->rawsize)
- val = toc->rawsize;
- else if ((skip[val >> 3] & ref_from_discarded) != 0)
- continue;
- else if ((skip[val >> 3] & can_optimize) != 0)
- {
- Elf_Internal_Rela *tocrel
- = toc_relocs + (skip[val >> 3] >> 2);
- unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
-
- switch (r_type)
- {
- case R_PPC64_TOC16_HA:
- rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
- break;
-
- case R_PPC64_TOC16_LO_DS:
- rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
- break;
-
- default:
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- ppc_howto_init ();
- info->callbacks->einfo
- (_("%P: %H: %s references "
- "optimized away TOC entry\n"),
- ibfd, sec, rel->r_offset,
- ppc64_elf_howto_table[r_type]->name);
- bfd_set_error (bfd_error_bad_value);
- goto error_ret;
- }
- rel->r_addend = tocrel->r_addend;
- elf_section_data (sec)->relocs = relstart;
- continue;
- }
-
- if (h != NULL || sym->st_value != 0)
- continue;
-
- rel->r_addend -= skip[val >> 3];
- elf_section_data (sec)->relocs = relstart;
- }
-
- if (elf_section_data (sec)->relocs != relstart)
- free (relstart);
- }
-
- /* We shouldn't have local or global symbols defined in the TOC,
- but handle them anyway. */
- if (local_syms != NULL)
- for (sym = local_syms;
- sym < local_syms + symtab_hdr->sh_info;
- ++sym)
- if (sym->st_value != 0
- && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
- {
- unsigned long i;
-
- if (sym->st_value > toc->rawsize)
- i = toc->rawsize >> 3;
- else
- i = sym->st_value >> 3;
-
- if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
- {
- if (local_toc_syms)
- (*_bfd_error_handler)
- (_("%s defined on removed toc entry"),
- bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
- do
- ++i;
- while ((skip[i] & (ref_from_discarded | can_optimize)));
- sym->st_value = (bfd_vma) i << 3;
- }
-
- sym->st_value -= skip[i];
- symtab_hdr->contents = (unsigned char *) local_syms;
- }
-
- /* Adjust any global syms defined in this toc input section. */
- if (toc_inf.global_toc_syms)
- {
- toc_inf.toc = toc;
- toc_inf.skip = skip;
- toc_inf.global_toc_syms = FALSE;
- elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
- &toc_inf);
- }
-
- if (toc->reloc_count != 0)
- {
- Elf_Internal_Shdr *rel_hdr;
- Elf_Internal_Rela *wrel;
- bfd_size_type sz;
-
- /* Remove unused toc relocs, and adjust those we keep. */
- if (toc_relocs == NULL)
- toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
- info->keep_memory);
- if (toc_relocs == NULL)
- goto error_ret;
-
- wrel = toc_relocs;
- for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
- if ((skip[rel->r_offset >> 3]
- & (ref_from_discarded | can_optimize)) == 0)
- {
- wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
- wrel->r_info = rel->r_info;
- wrel->r_addend = rel->r_addend;
- ++wrel;
- }
- else if (!dec_dynrel_count (rel->r_info, toc, info,
- &local_syms, NULL, NULL))
- goto error_ret;
-
- elf_section_data (toc)->relocs = toc_relocs;
- toc->reloc_count = wrel - toc_relocs;
- rel_hdr = _bfd_elf_single_rel_hdr (toc);
- sz = rel_hdr->sh_entsize;
- rel_hdr->sh_size = toc->reloc_count * sz;
- }
- }
- else if (toc_relocs != NULL
- && elf_section_data (toc)->relocs != toc_relocs)
- free (toc_relocs);
-
- if (local_syms != NULL
- && symtab_hdr->contents != (unsigned char *) local_syms)
- {
- if (!info->keep_memory)
- free (local_syms);
- else
- symtab_hdr->contents = (unsigned char *) local_syms;
- }
- free (skip);
- }
-
- return TRUE;
-}
-
-/* Return true iff input section I references the TOC using
- instructions limited to +/-32k offsets. */
-
-bfd_boolean
-ppc64_elf_has_small_toc_reloc (asection *i)
-{
- return (is_ppc64_elf (i->owner)
- && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
-}
-
-/* Allocate space for one GOT entry. */
-
-static void
-allocate_got (struct elf_link_hash_entry *h,
- struct bfd_link_info *info,
- struct got_entry *gent)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- bfd_boolean dyn;
- struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
- int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
- ? 16 : 8);
- int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
- ? 2 : 1) * sizeof (Elf64_External_Rela);
- asection *got = ppc64_elf_tdata (gent->owner)->got;
-
- gent->got.offset = got->size;
- got->size += entsize;
-
- dyn = htab->elf.dynamic_sections_created;
- if (h->type == STT_GNU_IFUNC)
- {
- htab->elf.irelplt->size += rentsize;
- htab->got_reli_size += rentsize;
- }
- else if ((info->shared
- || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
- && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak))
- {
- asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
- relgot->size += rentsize;
- }
-}
-
-/* This function merges got entries in the same toc group. */
-
-static void
-merge_got_entries (struct got_entry **pent)
-{
- struct got_entry *ent, *ent2;
-
- for (ent = *pent; ent != NULL; ent = ent->next)
- if (!ent->is_indirect)
- for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
- if (!ent2->is_indirect
- && ent2->addend == ent->addend
- && ent2->tls_type == ent->tls_type
- && elf_gp (ent2->owner) == elf_gp (ent->owner))
- {
- ent2->is_indirect = TRUE;
- ent2->got.ent = ent;
- }
-}
-
-/* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs. */
-
-static bfd_boolean
-allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
-{
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- asection *s;
- struct ppc_link_hash_entry *eh;
- struct elf_dyn_relocs *p;
- struct got_entry **pgent, *gent;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- info = (struct bfd_link_info *) inf;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if ((htab->elf.dynamic_sections_created
- && h->dynindx != -1
- && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
- || h->type == STT_GNU_IFUNC)
- {
- struct plt_entry *pent;
- bfd_boolean doneone = FALSE;
- for (pent = h->plt.plist; pent != NULL; pent = pent->next)
- if (pent->plt.refcount > 0)
- {
- if (!htab->elf.dynamic_sections_created
- || h->dynindx == -1)
- {
- s = htab->elf.iplt;
- pent->plt.offset = s->size;
- s->size += PLT_ENTRY_SIZE (htab);
- s = htab->elf.irelplt;
- }
- else
- {
- /* If this is the first .plt entry, make room for the special
- first entry. */
- s = htab->elf.splt;
- if (s->size == 0)
- s->size += PLT_INITIAL_ENTRY_SIZE (htab);
-
- pent->plt.offset = s->size;
-
- /* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE (htab);
-
- /* Make room for the .glink code. */
- s = htab->glink;
- if (s->size == 0)
- s->size += GLINK_CALL_STUB_SIZE;
- if (htab->opd_abi)
- {
- /* We need bigger stubs past index 32767. */
- if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
- s->size += 4;
- s->size += 2*4;
- }
- else
- s->size += 4;
-
- /* We also need to make an entry in the .rela.plt section. */
- s = htab->elf.srelplt;
- }
- s->size += sizeof (Elf64_External_Rela);
- doneone = TRUE;
- }
- else
- pent->plt.offset = (bfd_vma) -1;
- if (!doneone)
- {
- h->plt.plist = NULL;
- h->needs_plt = 0;
- }
- }
- else
- {
- h->plt.plist = NULL;
- h->needs_plt = 0;
- }
-
- eh = (struct ppc_link_hash_entry *) h;
- /* Run through the TLS GD got entries first if we're changing them
- to TPREL. */
- if ((eh->tls_mask & TLS_TPRELGD) != 0)
- for (gent = h->got.glist; gent != NULL; gent = gent->next)
- if (gent->got.refcount > 0
- && (gent->tls_type & TLS_GD) != 0)
- {
- /* This was a GD entry that has been converted to TPREL. If
- there happens to be a TPREL entry we can use that one. */
- struct got_entry *ent;
- for (ent = h->got.glist; ent != NULL; ent = ent->next)
- if (ent->got.refcount > 0
- && (ent->tls_type & TLS_TPREL) != 0
- && ent->addend == gent->addend
- && ent->owner == gent->owner)
- {
- gent->got.refcount = 0;
- break;
- }
-
- /* If not, then we'll be using our own TPREL entry. */
- if (gent->got.refcount != 0)
- gent->tls_type = TLS_TLS | TLS_TPREL;
- }
-
- /* Remove any list entry that won't generate a word in the GOT before
- we call merge_got_entries. Otherwise we risk merging to empty
- entries. */
- pgent = &h->got.glist;
- while ((gent = *pgent) != NULL)
- if (gent->got.refcount > 0)
- {
- if ((gent->tls_type & TLS_LD) != 0
- && !h->def_dynamic)
- {
- ppc64_tlsld_got (gent->owner)->got.refcount += 1;
- *pgent = gent->next;
- }
- else
- pgent = &gent->next;
- }
- else
- *pgent = gent->next;
-
- if (!htab->do_multi_toc)
- merge_got_entries (&h->got.glist);
-
- for (gent = h->got.glist; gent != NULL; gent = gent->next)
- if (!gent->is_indirect)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic,
- nor will all TLS symbols. */
- if (h->dynindx == -1
- && !h->forced_local
- && h->type != STT_GNU_IFUNC
- && htab->elf.dynamic_sections_created)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
-
- if (!is_ppc64_elf (gent->owner))
- abort ();
-
- allocate_got (h, info, gent);
- }
-
- if (eh->dyn_relocs == NULL
- || (!htab->elf.dynamic_sections_created
- && h->type != STT_GNU_IFUNC))
- return TRUE;
-
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for relocs that have become local due to symbol visibility
- changes. */
-
- if (info->shared)
- {
- /* Relocs that use pc_count are those that appear on a call insn,
- or certain REL relocs (see must_be_dyn_reloc) that can be
- generated via assembly. We want calls to protected symbols to
- resolve directly to the function rather than going via the plt.
- If people want function pointer comparisons to work as expected
- then they should avoid writing weird assembly. */
- if (SYMBOL_CALLS_LOCAL (info, h))
- {
- struct elf_dyn_relocs **pp;
-
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
- {
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
- }
- }
-
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (eh->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
- {
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- eh->dyn_relocs = NULL;
-
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- else if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- }
- }
- else if (h->type == STT_GNU_IFUNC)
- {
- if (!h->non_got_ref)
- eh->dyn_relocs = NULL;
- }
- else if (ELIMINATE_COPY_RELOCS)
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
-
- if (!h->non_got_ref
- && !h->def_regular)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
-
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
- }
-
- eh->dyn_relocs = NULL;
-
- keep: ;
- }
-
- /* Finally, allocate space. */
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- if (eh->elf.type == STT_GNU_IFUNC)
- sreloc = htab->elf.irelplt;
- sreloc->size += p->count * sizeof (Elf64_External_Rela);
- }
-
- return TRUE;
-}
-
-/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
- to set up space for global entry stubs. These are put in glink,
- after the branch table. */
-
-static bfd_boolean
-size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
-{
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- struct plt_entry *pent;
- asection *s;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (!h->pointer_equality_needed)
- return TRUE;
-
- if (h->def_regular)
- return TRUE;
-
- info = inf;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- s = htab->glink;
- for (pent = h->plt.plist; pent != NULL; pent = pent->next)
- if (pent->plt.offset != (bfd_vma) -1
- && pent->addend == 0)
- {
- /* For ELFv2, if this symbol is not defined in a regular file
- and we are not generating a shared library or pie, then we
- need to define the symbol in the executable on a call stub.
- This is to avoid text relocations. */
- s->size = (s->size + 15) & -16;
- h->root.u.def.section = s;
- h->root.u.def.value = s->size;
- s->size += 16;
- break;
- }
- return TRUE;
-}
-
-/* Set DF_TEXTREL if we find any dynamic relocs that apply to
- read-only sections. */
-
-static bfd_boolean
-maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
-{
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (readonly_dynrelocs (h))
- {
- ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
-
- /* Not an error, just cut short the traversal. */
- return FALSE;
- }
- return TRUE;
-}
-
-/* Set the sizes of the dynamic sections. */
-
-static bfd_boolean
-ppc64_elf_size_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bfd_boolean relocs;
- bfd *ibfd;
- struct got_entry *first_tlsld;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- dynobj = htab->elf.dynobj;
- if (dynobj == NULL)
- abort ();
-
- if (htab->elf.dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
- {
- s = bfd_get_linker_section (dynobj, ".interp");
- if (s == NULL)
- abort ();
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
-
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- struct got_entry **lgot_ents;
- struct got_entry **end_lgot_ents;
- struct plt_entry **local_plt;
- struct plt_entry **end_local_plt;
- unsigned char *lgot_masks;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct ppc_dyn_relocs *p;
-
- for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
- {
- if (!bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (p->count != 0)
- {
- asection *srel = elf_section_data (p->sec)->sreloc;
- if (p->ifunc)
- srel = htab->elf.irelplt;
- srel->size += p->count * sizeof (Elf64_External_Rela);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
- }
- }
- }
-
- lgot_ents = elf_local_got_ents (ibfd);
- if (!lgot_ents)
- continue;
-
- symtab_hdr = &elf_symtab_hdr (ibfd);
- locsymcount = symtab_hdr->sh_info;
- end_lgot_ents = lgot_ents + locsymcount;
- local_plt = (struct plt_entry **) end_lgot_ents;
- end_local_plt = local_plt + locsymcount;
- lgot_masks = (unsigned char *) end_local_plt;
- s = ppc64_elf_tdata (ibfd)->got;
- for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
- {
- struct got_entry **pent, *ent;
-
- pent = lgot_ents;
- while ((ent = *pent) != NULL)
- if (ent->got.refcount > 0)
- {
- if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
- {
- ppc64_tlsld_got (ibfd)->got.refcount += 1;
- *pent = ent->next;
- }
- else
- {
- unsigned int ent_size = 8;
- unsigned int rel_size = sizeof (Elf64_External_Rela);
-
- ent->got.offset = s->size;
- if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
- {
- ent_size *= 2;
- rel_size *= 2;
- }
- s->size += ent_size;
- if ((*lgot_masks & PLT_IFUNC) != 0)
- {
- htab->elf.irelplt->size += rel_size;
- htab->got_reli_size += rel_size;
- }
- else if (info->shared)
- {
- asection *srel = ppc64_elf_tdata (ibfd)->relgot;
- srel->size += rel_size;
- }
- pent = &ent->next;
- }
- }
- else
- *pent = ent->next;
- }
-
- /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
- for (; local_plt < end_local_plt; ++local_plt)
- {
- struct plt_entry *ent;
-
- for (ent = *local_plt; ent != NULL; ent = ent->next)
- if (ent->plt.refcount > 0)
- {
- s = htab->elf.iplt;
- ent->plt.offset = s->size;
- s->size += PLT_ENTRY_SIZE (htab);
-
- htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
- }
- else
- ent->plt.offset = (bfd_vma) -1;
- }
- }
-
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
- /* Stash the end of glink branch table. */
- if (htab->glink != NULL)
- htab->glink->rawsize = htab->glink->size;
-
- if (!htab->opd_abi && !info->shared)
- elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
-
- first_tlsld = NULL;
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- struct got_entry *ent;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- ent = ppc64_tlsld_got (ibfd);
- if (ent->got.refcount > 0)
- {
- if (!htab->do_multi_toc && first_tlsld != NULL)
- {
- ent->is_indirect = TRUE;
- ent->got.ent = first_tlsld;
- }
- else
- {
- if (first_tlsld == NULL)
- first_tlsld = ent;
- s = ppc64_elf_tdata (ibfd)->got;
- ent->got.offset = s->size;
- ent->owner = ibfd;
- s->size += 16;
- if (info->shared)
- {
- asection *srel = ppc64_elf_tdata (ibfd)->relgot;
- srel->size += sizeof (Elf64_External_Rela);
- }
- }
- }
- else
- ent->got.offset = (bfd_vma) -1;
- }
-
- /* We now have determined the sizes of the various dynamic sections.
- Allocate memory for them. */
- relocs = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
-
- if (s == htab->brlt || s == htab->relbrlt)
- /* These haven't been allocated yet; don't strip. */
- continue;
- else if (s == htab->elf.sgot
- || s == htab->elf.splt
- || s == htab->elf.iplt
- || s == htab->glink
- || s == htab->dynbss)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- }
- else if (s == htab->glink_eh_frame)
- {
- if (!bfd_is_abs_section (s->output_section))
- /* Not sized yet. */
- continue;
- }
- else if (CONST_STRNEQ (s->name, ".rela"))
- {
- if (s->size != 0)
- {
- if (s != htab->elf.srelplt)
- relocs = TRUE;
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
-
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- s->flags |= SEC_EXCLUDE;
- continue;
- }
-
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
-
- /* Allocate memory for the section contents. We use bfd_zalloc
- here in case unused entries are not reclaimed before the
- section's contents are written out. This should not happen,
- but this way if it does we get a R_PPC64_NONE reloc in .rela
- sections instead of garbage.
- We also rely on the section contents being zero when writing
- the GOT. */
- s->contents = bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
-
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- if (!is_ppc64_elf (ibfd))
- continue;
-
- s = ppc64_elf_tdata (ibfd)->got;
- if (s != NULL && s != htab->elf.sgot)
- {
- if (s->size == 0)
- s->flags |= SEC_EXCLUDE;
- else
- {
- s->contents = bfd_zalloc (ibfd, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
- }
- s = ppc64_elf_tdata (ibfd)->relgot;
- if (s != NULL)
- {
- if (s->size == 0)
- s->flags |= SEC_EXCLUDE;
- else
- {
- s->contents = bfd_zalloc (ibfd, s->size);
- if (s->contents == NULL)
- return FALSE;
- relocs = TRUE;
- s->reloc_count = 0;
- }
- }
- }
-
- if (htab->elf.dynamic_sections_created)
- {
- bfd_boolean tls_opt;
-
- /* Add some entries to the .dynamic section. We fill in the
- values later, in ppc64_elf_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
-#define add_dynamic_entry(TAG, VAL) \
- _bfd_elf_add_dynamic_entry (info, TAG, VAL)
-
- if (info->executable)
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
- }
-
- if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
- {
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0)
- || !add_dynamic_entry (DT_PPC64_GLINK, 0))
- return FALSE;
- }
-
- if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
- {
- if (!add_dynamic_entry (DT_PPC64_OPD, 0)
- || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
- return FALSE;
- }
-
- tls_opt = (!htab->no_tls_get_addr_opt
- && htab->tls_get_addr_fd != NULL
- && htab->tls_get_addr_fd->elf.plt.plist != NULL);
- if (tls_opt || !htab->opd_abi)
- {
- if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
- return FALSE;
- }
-
- if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
- return FALSE;
-
- /* If any dynamic relocs apply to a read-only section,
- then we need a DT_TEXTREL entry. */
- if ((info->flags & DF_TEXTREL) == 0)
- elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
-
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
- }
- }
-#undef add_dynamic_entry
-
- return TRUE;
-}
-
-/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
-
-static bfd_boolean
-ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
-{
- if (h->plt.plist != NULL
- && !h->def_regular
- && !h->pointer_equality_needed)
- return FALSE;
-
- return _bfd_elf_hash_symbol (h);
-}
-
-/* Determine the type of stub needed, if any, for a call. */
-
-static inline enum ppc_stub_type
-ppc_type_of_stub (asection *input_sec,
- const Elf_Internal_Rela *rel,
- struct ppc_link_hash_entry **hash,
- struct plt_entry **plt_ent,
- bfd_vma destination,
- unsigned long local_off)
-{
- struct ppc_link_hash_entry *h = *hash;
- bfd_vma location;
- bfd_vma branch_offset;
- bfd_vma max_branch_offset;
- enum elf_ppc64_reloc_type r_type;
-
- if (h != NULL)
- {
- struct plt_entry *ent;
- struct ppc_link_hash_entry *fdh = h;
- if (h->oh != NULL
- && h->oh->is_func_descriptor)
- {
- fdh = ppc_follow_link (h->oh);
- *hash = fdh;
- }
-
- for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend
- && ent->plt.offset != (bfd_vma) -1)
- {
- *plt_ent = ent;
- return ppc_stub_plt_call;
- }
-
- /* Here, we know we don't have a plt entry. If we don't have a
- either a defined function descriptor or a defined entry symbol
- in a regular object file, then it is pointless trying to make
- any other type of stub. */
- if (!is_static_defined (&fdh->elf)
- && !is_static_defined (&h->elf))
- return ppc_stub_none;
- }
- else if (elf_local_got_ents (input_sec->owner) != NULL)
- {
- Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
- struct plt_entry **local_plt = (struct plt_entry **)
- elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
- unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
-
- if (local_plt[r_symndx] != NULL)
- {
- struct plt_entry *ent;
-
- for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
- if (ent->addend == rel->r_addend
- && ent->plt.offset != (bfd_vma) -1)
- {
- *plt_ent = ent;
- return ppc_stub_plt_call;
- }
- }
- }
-
- /* Determine where the call point is. */
- location = (input_sec->output_offset
- + input_sec->output_section->vma
- + rel->r_offset);
-
- branch_offset = destination - location;
- r_type = ELF64_R_TYPE (rel->r_info);
-
- /* Determine if a long branch stub is needed. */
- max_branch_offset = 1 << 25;
- if (r_type != R_PPC64_REL24)
- max_branch_offset = 1 << 15;
-
- if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
- /* We need a stub. Figure out whether a long_branch or plt_branch
- is needed later. */
- return ppc_stub_long_branch;
-
- return ppc_stub_none;
-}
-
-/* With power7 weakly ordered memory model, it is possible for ld.so
- to update a plt entry in one thread and have another thread see a
- stale zero toc entry. To avoid this we need some sort of acquire
- barrier in the call stub. One solution is to make the load of the
- toc word seem to appear to depend on the load of the function entry
- word. Another solution is to test for r2 being zero, and branch to
- the appropriate glink entry if so.
-
- . fake dep barrier compare
- . ld 12,xxx(2) ld 12,xxx(2)
- . mtctr 12 mtctr 12
- . xor 11,12,12 ld 2,xxx+8(2)
- . add 2,2,11 cmpldi 2,0
- . ld 2,xxx+8(2) bnectr+
- . bctr b <glink_entry>
-
- The solution involving the compare turns out to be faster, so
- that's what we use unless the branch won't reach. */
-
-#define ALWAYS_USE_FAKE_DEP 0
-#define ALWAYS_EMIT_R2SAVE 0
-
-#define PPC_LO(v) ((v) & 0xffff)
-#define PPC_HI(v) (((v) >> 16) & 0xffff)
-#define PPC_HA(v) PPC_HI ((v) + 0x8000)
-
-static inline unsigned int
-plt_stub_size (struct ppc_link_hash_table *htab,
- struct ppc_stub_hash_entry *stub_entry,
- bfd_vma off)
-{
- unsigned size = 12;
-
- if (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- size += 4;
- if (PPC_HA (off) != 0)
- size += 4;
- if (htab->opd_abi)
- {
- size += 4;
- if (htab->plt_static_chain)
- size += 4;
- if (htab->plt_thread_safe)
- size += 8;
- if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
- size += 4;
- }
- if (stub_entry->h != NULL
- && (stub_entry->h == htab->tls_get_addr_fd
- || stub_entry->h == htab->tls_get_addr)
- && !htab->no_tls_get_addr_opt)
- size += 13 * 4;
- return size;
-}
-
-/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
- then return the padding needed to do so. */
-static inline unsigned int
-plt_stub_pad (struct ppc_link_hash_table *htab,
- struct ppc_stub_hash_entry *stub_entry,
- bfd_vma plt_off)
-{
- int stub_align = 1 << htab->plt_stub_align;
- unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
- bfd_vma stub_off = stub_entry->stub_sec->size;
-
- if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
- > (stub_size & -stub_align))
- return stub_align - (stub_off & (stub_align - 1));
- return 0;
-}
-
-/* Build a .plt call stub. */
-
-static inline bfd_byte *
-build_plt_stub (struct ppc_link_hash_table *htab,
- struct ppc_stub_hash_entry *stub_entry,
- bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
-{
- bfd *obfd = htab->stub_bfd;
- bfd_boolean plt_load_toc = htab->opd_abi;
- bfd_boolean plt_static_chain = htab->plt_static_chain;
- bfd_boolean plt_thread_safe = htab->plt_thread_safe;
- bfd_boolean use_fake_dep = plt_thread_safe;
- bfd_vma cmp_branch_off = 0;
-
- if (!ALWAYS_USE_FAKE_DEP
- && plt_load_toc
- && plt_thread_safe
- && !(stub_entry->h != NULL
- && (stub_entry->h == htab->tls_get_addr_fd
- || stub_entry->h == htab->tls_get_addr)
- && !htab->no_tls_get_addr_opt))
- {
- bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
- bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
- / PLT_ENTRY_SIZE (htab));
- bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
- bfd_vma to, from;
-
- if (pltindex > 32768)
- glinkoff += (pltindex - 32768) * 4;
- to = (glinkoff
- + htab->glink->output_offset
- + htab->glink->output_section->vma);
- from = (p - stub_entry->stub_sec->contents
- + 4 * (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- + 4 * (PPC_HA (offset) != 0)
- + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
- != PPC_HA (offset))
- + 4 * (plt_static_chain != 0)
- + 20
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
- cmp_branch_off = to - from;
- use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
- }
-
- if (PPC_HA (offset) != 0)
- {
- if (r != NULL)
- {
- if (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- r[0].r_offset += 4;
- r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
- r[1].r_offset = r[0].r_offset + 4;
- r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
- r[1].r_addend = r[0].r_addend;
- if (plt_load_toc)
- {
- if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
- {
- r[2].r_offset = r[1].r_offset + 4;
- r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
- r[2].r_addend = r[0].r_addend;
- }
- else
- {
- r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
- r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
- r[2].r_addend = r[0].r_addend + 8;
- if (plt_static_chain)
- {
- r[3].r_offset = r[2].r_offset + 4;
- r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
- r[3].r_addend = r[0].r_addend + 16;
- }
- }
- }
- }
- if (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
- bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
- bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
- if (plt_load_toc
- && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
- {
- bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
- offset = 0;
- }
- bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
- if (plt_load_toc)
- {
- if (use_fake_dep)
- {
- bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
- bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
- }
- bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
- if (plt_static_chain)
- bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
- }
- }
- else
- {
- if (r != NULL)
- {
- if (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- r[0].r_offset += 4;
- r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
- if (plt_load_toc)
- {
- if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
- {
- r[1].r_offset = r[0].r_offset + 4;
- r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
- r[1].r_addend = r[0].r_addend;
- }
- else
- {
- r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
- r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
- r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
- if (plt_static_chain)
- {
- r[2].r_offset = r[1].r_offset + 4;
- r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
- r[2].r_addend = r[0].r_addend + 8;
- }
- }
- }
- }
- if (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
- bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
- if (plt_load_toc
- && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
- {
- bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
- offset = 0;
- }
- bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
- if (plt_load_toc)
- {
- if (use_fake_dep)
- {
- bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
- bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
- }
- if (plt_static_chain)
- bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
- bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
- }
- }
- if (plt_load_toc && plt_thread_safe && !use_fake_dep)
- {
- bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
- bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
- bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
- }
- else
- bfd_put_32 (obfd, BCTR, p), p += 4;
- return p;
-}
-
-/* Build a special .plt call stub for __tls_get_addr. */
-
-#define LD_R11_0R3 0xe9630000
-#define LD_R12_0R3 0xe9830000
-#define MR_R0_R3 0x7c601b78
-#define CMPDI_R11_0 0x2c2b0000
-#define ADD_R3_R12_R13 0x7c6c6a14
-#define BEQLR 0x4d820020
-#define MR_R3_R0 0x7c030378
-#define STD_R11_0R1 0xf9610000
-#define BCTRL 0x4e800421
-#define LD_R11_0R1 0xe9610000
-#define MTLR_R11 0x7d6803a6
-
-static inline bfd_byte *
-build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
- struct ppc_stub_hash_entry *stub_entry,
- bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
-{
- bfd *obfd = htab->stub_bfd;
-
- bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
- bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
- bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
- bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
- bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
- bfd_put_32 (obfd, BEQLR, p), p += 4;
- bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
- bfd_put_32 (obfd, MFLR_R11, p), p += 4;
- bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
-
- if (r != NULL)
- r[0].r_offset += 9 * 4;
- p = build_plt_stub (htab, stub_entry, p, offset, r);
- bfd_put_32 (obfd, BCTRL, p - 4);
-
- bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
- bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
- bfd_put_32 (obfd, MTLR_R11, p), p += 4;
- bfd_put_32 (obfd, BLR, p), p += 4;
-
- return p;
-}
-
-static Elf_Internal_Rela *
-get_relocs (asection *sec, int count)
-{
- Elf_Internal_Rela *relocs;
- struct bfd_elf_section_data *elfsec_data;
-
- elfsec_data = elf_section_data (sec);
- relocs = elfsec_data->relocs;
- if (relocs == NULL)
- {
- bfd_size_type relsize;
- relsize = sec->reloc_count * sizeof (*relocs);
- relocs = bfd_alloc (sec->owner, relsize);
- if (relocs == NULL)
- return NULL;
- elfsec_data->relocs = relocs;
- elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
- sizeof (Elf_Internal_Shdr));
- if (elfsec_data->rela.hdr == NULL)
- return NULL;
- elfsec_data->rela.hdr->sh_size = (sec->reloc_count
- * sizeof (Elf64_External_Rela));
- elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
- sec->reloc_count = 0;
- }
- relocs += sec->reloc_count;
- sec->reloc_count += count;
- return relocs;
-}
-
-static bfd_vma
-get_r2off (struct bfd_link_info *info,
- struct ppc_stub_hash_entry *stub_entry)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
-
- if (r2off == 0)
- {
- /* Support linking -R objects. Get the toc pointer from the
- opd entry. */
- char buf[8];
- if (!htab->opd_abi)
- return r2off;
- asection *opd = stub_entry->h->elf.root.u.def.section;
- bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
-
- if (strcmp (opd->name, ".opd") != 0
- || opd->reloc_count != 0)
- {
- info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
- stub_entry->h->elf.root.root.string);
- bfd_set_error (bfd_error_bad_value);
- return 0;
- }
- if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
- return 0;
- r2off = bfd_get_64 (opd->owner, buf);
- r2off -= elf_gp (info->output_bfd);
- }
- r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
- return r2off;
-}
-
-static bfd_boolean
-ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
-{
- struct ppc_stub_hash_entry *stub_entry;
- struct ppc_branch_hash_entry *br_entry;
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- bfd_byte *loc;
- bfd_byte *p;
- bfd_vma dest, off;
- int size;
- Elf_Internal_Rela *r;
- asection *plt;
-
- /* Massage our args to the form they really have. */
- stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
- info = in_arg;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Make a note of the offset within the stubs for this entry. */
- stub_entry->stub_offset = stub_entry->stub_sec->size;
- loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
-
- htab->stub_count[stub_entry->stub_type - 1] += 1;
- switch (stub_entry->stub_type)
- {
- case ppc_stub_long_branch:
- case ppc_stub_long_branch_r2off:
- /* Branches are relative. This is where we are going to. */
- dest = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
- dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
- off = dest;
-
- /* And this is where we are coming from. */
- off -= (stub_entry->stub_offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
-
- size = 4;
- if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
- {
- bfd_vma r2off = get_r2off (info, stub_entry);
-
- if (r2off == 0)
- {
- htab->stub_error = TRUE;
- return FALSE;
- }
- bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
- loc += 4;
- size = 12;
- if (PPC_HA (r2off) != 0)
- {
- size = 16;
- bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
- loc += 4;
- }
- bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
- loc += 4;
- off -= size - 4;
- }
- bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
-
- if (off + (1 << 25) >= (bfd_vma) (1 << 26))
- {
- info->callbacks->einfo
- (_("%P: long branch stub `%s' offset overflow\n"),
- stub_entry->root.string);
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- if (info->emitrelocations)
- {
- r = get_relocs (stub_entry->stub_sec, 1);
- if (r == NULL)
- return FALSE;
- r->r_offset = loc - stub_entry->stub_sec->contents;
- r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
- r->r_addend = dest;
- if (stub_entry->h != NULL)
- {
- struct elf_link_hash_entry **hashes;
- unsigned long symndx;
- struct ppc_link_hash_entry *h;
-
- hashes = elf_sym_hashes (htab->stub_bfd);
- if (hashes == NULL)
- {
- bfd_size_type hsize;
-
- hsize = (htab->stub_globals + 1) * sizeof (*hashes);
- hashes = bfd_zalloc (htab->stub_bfd, hsize);
- if (hashes == NULL)
- return FALSE;
- elf_sym_hashes (htab->stub_bfd) = hashes;
- htab->stub_globals = 1;
- }
- symndx = htab->stub_globals++;
- h = stub_entry->h;
- hashes[symndx] = &h->elf;
- r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
- if (h->oh != NULL && h->oh->is_func)
- h = ppc_follow_link (h->oh);
- if (h->elf.root.u.def.section != stub_entry->target_section)
- /* H is an opd symbol. The addend must be zero. */
- r->r_addend = 0;
- else
- {
- off = (h->elf.root.u.def.value
- + h->elf.root.u.def.section->output_offset
- + h->elf.root.u.def.section->output_section->vma);
- r->r_addend -= off;
- }
- }
- }
- break;
-
- case ppc_stub_plt_branch:
- case ppc_stub_plt_branch_r2off:
- br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
- stub_entry->root.string + 9,
- FALSE, FALSE);
- if (br_entry == NULL)
- {
- info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
- stub_entry->root.string);
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- dest = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
- if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
- dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
-
- bfd_put_64 (htab->brlt->owner, dest,
- htab->brlt->contents + br_entry->offset);
-
- if (br_entry->iter == htab->stub_iteration)
- {
- br_entry->iter = 0;
-
- if (htab->relbrlt != NULL)
- {
- /* Create a reloc for the branch lookup table entry. */
- Elf_Internal_Rela rela;
- bfd_byte *rl;
-
- rela.r_offset = (br_entry->offset
- + htab->brlt->output_offset
- + htab->brlt->output_section->vma);
- rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
- rela.r_addend = dest;
-
- rl = htab->relbrlt->contents;
- rl += (htab->relbrlt->reloc_count++
- * sizeof (Elf64_External_Rela));
- bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
- }
- else if (info->emitrelocations)
- {
- r = get_relocs (htab->brlt, 1);
- if (r == NULL)
- return FALSE;
- /* brlt, being SEC_LINKER_CREATED does not go through the
- normal reloc processing. Symbols and offsets are not
- translated from input file to output file form, so
- set up the offset per the output file. */
- r->r_offset = (br_entry->offset
- + htab->brlt->output_offset
- + htab->brlt->output_section->vma);
- r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
- r->r_addend = dest;
- }
- }
-
- dest = (br_entry->offset
- + htab->brlt->output_offset
- + htab->brlt->output_section->vma);
-
- off = (dest
- - elf_gp (htab->brlt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
-
- if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
- {
- info->callbacks->einfo
- (_("%P: linkage table error against `%T'\n"),
- stub_entry->root.string);
- bfd_set_error (bfd_error_bad_value);
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- if (info->emitrelocations)
- {
- r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
- if (r == NULL)
- return FALSE;
- r[0].r_offset = loc - stub_entry->stub_sec->contents;
- if (bfd_big_endian (info->output_bfd))
- r[0].r_offset += 2;
- if (stub_entry->stub_type == ppc_stub_plt_branch_r2off
- && htab->opd_abi)
- r[0].r_offset += 4;
- r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
- r[0].r_addend = dest;
- if (PPC_HA (off) != 0)
- {
- r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
- r[1].r_offset = r[0].r_offset + 4;
- r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
- r[1].r_addend = r[0].r_addend;
- }
- }
-
- if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
- || !htab->opd_abi)
- {
- if (PPC_HA (off) != 0)
- {
- size = 16;
- bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
- loc += 4;
- bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
- }
- else
- {
- size = 12;
- bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
- }
- }
- else
- {
- bfd_vma r2off = get_r2off (info, stub_entry);
-
- if (r2off == 0)
- {
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
- loc += 4;
- size = 20;
- if (PPC_HA (off) != 0)
- {
- size += 4;
- bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
- loc += 4;
- bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
- loc += 4;
- }
- else
- {
- bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
- loc += 4;
- }
-
- if (PPC_HA (r2off) != 0)
- {
- size += 4;
- bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
- loc += 4;
- }
- bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
- }
- loc += 4;
- bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc);
- loc += 4;
- bfd_put_32 (htab->stub_bfd, BCTR, loc);
- break;
-
- case ppc_stub_plt_call:
- case ppc_stub_plt_call_r2save:
- if (stub_entry->h != NULL
- && stub_entry->h->is_func_descriptor
- && stub_entry->h->oh != NULL)
- {
- struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
-
- /* If the old-ABI "dot-symbol" is undefined make it weak so
- we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
- FIXME: We used to define the symbol on one of the call
- stubs instead, which is why we test symbol section id
- against htab->top_id in various places. Likely all
- these checks could now disappear. */
- if (fh->elf.root.type == bfd_link_hash_undefined)
- fh->elf.root.type = bfd_link_hash_undefweak;
- /* Stop undo_symbol_twiddle changing it back to undefined. */
- fh->was_undefined = 0;
- }
-
- /* Now build the stub. */
- dest = stub_entry->plt_ent->plt.offset & ~1;
- if (dest >= (bfd_vma) -2)
- abort ();
-
- plt = htab->elf.splt;
- if (!htab->elf.dynamic_sections_created
- || stub_entry->h == NULL
- || stub_entry->h->elf.dynindx == -1)
- plt = htab->elf.iplt;
-
- dest += plt->output_offset + plt->output_section->vma;
-
- if (stub_entry->h == NULL
- && (stub_entry->plt_ent->plt.offset & 1) == 0)
- {
- Elf_Internal_Rela rela;
- bfd_byte *rl;
-
- rela.r_offset = dest;
- if (htab->opd_abi)
- rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
- else
- rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
- rela.r_addend = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
-
- rl = (htab->elf.irelplt->contents
- + (htab->elf.irelplt->reloc_count++
- * sizeof (Elf64_External_Rela)));
- bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
- stub_entry->plt_ent->plt.offset |= 1;
- }
-
- off = (dest
- - elf_gp (plt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
-
- if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
- {
- info->callbacks->einfo
- (_("%P: linkage table error against `%T'\n"),
- stub_entry->h != NULL
- ? stub_entry->h->elf.root.root.string
- : "<local sym>");
- bfd_set_error (bfd_error_bad_value);
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- if (htab->plt_stub_align != 0)
- {
- unsigned pad = plt_stub_pad (htab, stub_entry, off);
-
- stub_entry->stub_sec->size += pad;
- stub_entry->stub_offset = stub_entry->stub_sec->size;
- loc += pad;
- }
-
- r = NULL;
- if (info->emitrelocations)
- {
- r = get_relocs (stub_entry->stub_sec,
- (2
- + (PPC_HA (off) != 0)
- + (htab->plt_static_chain
- && PPC_HA (off + 16) == PPC_HA (off))));
- if (r == NULL)
- return FALSE;
- r[0].r_offset = loc - stub_entry->stub_sec->contents;
- if (bfd_big_endian (info->output_bfd))
- r[0].r_offset += 2;
- r[0].r_addend = dest;
- }
- if (stub_entry->h != NULL
- && (stub_entry->h == htab->tls_get_addr_fd
- || stub_entry->h == htab->tls_get_addr)
- && !htab->no_tls_get_addr_opt)
- p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
- else
- p = build_plt_stub (htab, stub_entry, loc, off, r);
- size = p - loc;
- break;
-
- default:
- BFD_FAIL ();
- return FALSE;
- }
-
- stub_entry->stub_sec->size += size;
-
- if (htab->emit_stub_syms)
- {
- struct elf_link_hash_entry *h;
- size_t len1, len2;
- char *name;
- const char *const stub_str[] = { "long_branch",
- "long_branch_r2off",
- "plt_branch",
- "plt_branch_r2off",
- "plt_call",
- "plt_call" };
-
- len1 = strlen (stub_str[stub_entry->stub_type - 1]);
- len2 = strlen (stub_entry->root.string);
- name = bfd_malloc (len1 + len2 + 2);
- if (name == NULL)
- return FALSE;
- memcpy (name, stub_entry->root.string, 9);
- memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
- memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
- h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
- if (h == NULL)
- return FALSE;
- if (h->root.type == bfd_link_hash_new)
- {
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = stub_entry->stub_sec;
- h->root.u.def.value = stub_entry->stub_offset;
- h->ref_regular = 1;
- h->def_regular = 1;
- h->ref_regular_nonweak = 1;
- h->forced_local = 1;
- h->non_elf = 0;
- }
- }
-
- return TRUE;
-}
-
-/* As above, but don't actually build the stub. Just bump offset so
- we know stub section sizes, and select plt_branch stubs where
- long_branch stubs won't do. */
-
-static bfd_boolean
-ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
-{
- struct ppc_stub_hash_entry *stub_entry;
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- bfd_vma off;
- int size;
-
- /* Massage our args to the form they really have. */
- stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
- info = in_arg;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- if (stub_entry->stub_type == ppc_stub_plt_call
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- {
- asection *plt;
- off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
- if (off >= (bfd_vma) -2)
- abort ();
- plt = htab->elf.splt;
- if (!htab->elf.dynamic_sections_created
- || stub_entry->h == NULL
- || stub_entry->h->elf.dynindx == -1)
- plt = htab->elf.iplt;
- off += (plt->output_offset
- + plt->output_section->vma
- - elf_gp (plt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
-
- size = plt_stub_size (htab, stub_entry, off);
- if (htab->plt_stub_align)
- size += plt_stub_pad (htab, stub_entry, off);
- if (info->emitrelocations)
- {
- stub_entry->stub_sec->reloc_count
- += ((PPC_HA (off) != 0)
- + (htab->opd_abi
- ? 2 + (htab->plt_static_chain
- && PPC_HA (off + 16) == PPC_HA (off))
- : 1));
- stub_entry->stub_sec->flags |= SEC_RELOC;
- }
- }
- else
- {
- /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
- variants. */
- bfd_vma r2off = 0;
- bfd_vma local_off = 0;
-
- off = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
- off -= (stub_entry->stub_sec->size
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
-
- /* Reset the stub type from the plt variant in case we now
- can reach with a shorter stub. */
- if (stub_entry->stub_type >= ppc_stub_plt_branch)
- stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
-
- size = 4;
- if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
- {
- r2off = get_r2off (info, stub_entry);
- if (r2off == 0 && htab->opd_abi)
- {
- htab->stub_error = TRUE;
- return FALSE;
- }
- size = 12;
- if (PPC_HA (r2off) != 0)
- size = 16;
- off -= size - 4;
- }
-
- local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
-
- /* If the branch offset if too big, use a ppc_stub_plt_branch.
- Do the same for -R objects without function descriptors. */
- if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
- || (stub_entry->stub_type == ppc_stub_long_branch_r2off
- && r2off == 0))
- {
- struct ppc_branch_hash_entry *br_entry;
-
- br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
- stub_entry->root.string + 9,
- TRUE, FALSE);
- if (br_entry == NULL)
- {
- info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
- stub_entry->root.string);
- htab->stub_error = TRUE;
- return FALSE;
- }
-
- if (br_entry->iter != htab->stub_iteration)
- {
- br_entry->iter = htab->stub_iteration;
- br_entry->offset = htab->brlt->size;
- htab->brlt->size += 8;
-
- if (htab->relbrlt != NULL)
- htab->relbrlt->size += sizeof (Elf64_External_Rela);
- else if (info->emitrelocations)
- {
- htab->brlt->reloc_count += 1;
- htab->brlt->flags |= SEC_RELOC;
- }
- }
-
- stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
- off = (br_entry->offset
- + htab->brlt->output_offset
- + htab->brlt->output_section->vma
- - elf_gp (htab->brlt->output_section->owner)
- - htab->stub_group[stub_entry->id_sec->id].toc_off);
-
- if (info->emitrelocations)
- {
- stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
- stub_entry->stub_sec->flags |= SEC_RELOC;
- }
-
- if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
- || !htab->opd_abi)
- {
- size = 12;
- if (PPC_HA (off) != 0)
- size = 16;
- }
- else
- {
- size = 20;
- if (PPC_HA (off) != 0)
- size += 4;
-
- if (PPC_HA (r2off) != 0)
- size += 4;
- }
- }
- else if (info->emitrelocations)
- {
- stub_entry->stub_sec->reloc_count += 1;
- stub_entry->stub_sec->flags |= SEC_RELOC;
- }
- }
-
- stub_entry->stub_sec->size += size;
- return TRUE;
-}
-
-/* Set up various things so that we can make a list of input sections
- for each output section included in the link. Returns -1 on error,
- 0 when no stubs will be needed, and 1 on success. */
-
-int
-ppc64_elf_setup_section_lists
- (struct bfd_link_info *info,
- asection *(*add_stub_section) (const char *, asection *),
- void (*layout_sections_again) (void))
-{
- bfd *input_bfd;
- int top_id, top_index, id;
- asection *section;
- asection **input_list;
- bfd_size_type amt;
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab == NULL)
- return -1;
- /* Stash our params away. */
- htab->add_stub_section = add_stub_section;
- htab->layout_sections_again = layout_sections_again;
-
- /* Find the top input section id. */
- for (input_bfd = info->input_bfds, top_id = 3;
- input_bfd != NULL;
- input_bfd = input_bfd->link_next)
- {
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next)
- {
- if (top_id < section->id)
- top_id = section->id;
- }
- }
-
- htab->top_id = top_id;
- amt = sizeof (struct map_stub) * (top_id + 1);
- htab->stub_group = bfd_zmalloc (amt);
- if (htab->stub_group == NULL)
- return -1;
-
- /* Set toc_off for com, und, abs and ind sections. */
- for (id = 0; id < 3; id++)
- htab->stub_group[id].toc_off = TOC_BASE_OFF;
-
- /* We can't use output_bfd->section_count here to find the top output
- section index as some sections may have been removed, and
- strip_excluded_output_sections doesn't renumber the indices. */
- for (section = info->output_bfd->sections, top_index = 0;
- section != NULL;
- section = section->next)
- {
- if (top_index < section->index)
- top_index = section->index;
- }
-
- htab->top_index = top_index;
- amt = sizeof (asection *) * (top_index + 1);
- input_list = bfd_zmalloc (amt);
- htab->input_list = input_list;
- if (input_list == NULL)
- return -1;
-
- return 1;
-}
-
-/* Set up for first pass at multitoc partitioning. */
-
-void
-ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
- htab->toc_bfd = NULL;
- htab->toc_first_sec = NULL;
-}
-
-/* The linker repeatedly calls this function for each TOC input section
- and linker generated GOT section. Group input bfds such that the toc
- within a group is less than 64k in size. */
-
-bfd_boolean
-ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- bfd_vma addr, off, limit;
-
- if (htab == NULL)
- return FALSE;
-
- if (!htab->second_toc_pass)
- {
- /* Keep track of the first .toc or .got section for this input bfd. */
- bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
-
- if (new_bfd)
- {
- htab->toc_bfd = isec->owner;
- htab->toc_first_sec = isec;
- }
-
- addr = isec->output_offset + isec->output_section->vma;
- off = addr - htab->toc_curr;
- limit = 0x80008000;
- if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
- limit = 0x10000;
- if (off + isec->size > limit)
- {
- addr = (htab->toc_first_sec->output_offset
- + htab->toc_first_sec->output_section->vma);
- htab->toc_curr = addr;
- }
-
- /* toc_curr is the base address of this toc group. Set elf_gp
- for the input section to be the offset relative to the
- output toc base plus 0x8000. Making the input elf_gp an
- offset allows us to move the toc as a whole without
- recalculating input elf_gp. */
- off = htab->toc_curr - elf_gp (isec->output_section->owner);
- off += TOC_BASE_OFF;
-
- /* Die if someone uses a linker script that doesn't keep input
- file .toc and .got together. */
- if (new_bfd
- && elf_gp (isec->owner) != 0
- && elf_gp (isec->owner) != off)
- return FALSE;
-
- elf_gp (isec->owner) = off;
- return TRUE;
- }
-
- /* During the second pass toc_first_sec points to the start of
- a toc group, and toc_curr is used to track the old elf_gp.
- We use toc_bfd to ensure we only look at each bfd once. */
- if (htab->toc_bfd == isec->owner)
- return TRUE;
- htab->toc_bfd = isec->owner;
-
- if (htab->toc_first_sec == NULL
- || htab->toc_curr != elf_gp (isec->owner))
- {
- htab->toc_curr = elf_gp (isec->owner);
- htab->toc_first_sec = isec;
- }
- addr = (htab->toc_first_sec->output_offset
- + htab->toc_first_sec->output_section->vma);
- off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
- elf_gp (isec->owner) = off;
-
- return TRUE;
-}
-
-/* Called via elf_link_hash_traverse to merge GOT entries for global
- symbol H. */
-
-static bfd_boolean
-merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
-{
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- merge_got_entries (&h->got.glist);
-
- return TRUE;
-}
-
-/* Called via elf_link_hash_traverse to allocate GOT entries for global
- symbol H. */
-
-static bfd_boolean
-reallocate_got (struct elf_link_hash_entry *h, void *inf)
-{
- struct got_entry *gent;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- for (gent = h->got.glist; gent != NULL; gent = gent->next)
- if (!gent->is_indirect)
- allocate_got (h, (struct bfd_link_info *) inf, gent);
- return TRUE;
-}
-
-/* Called on the first multitoc pass after the last call to
- ppc64_elf_next_toc_section. This function removes duplicate GOT
- entries. */
-
-bfd_boolean
-ppc64_elf_layout_multitoc (struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- struct bfd *ibfd, *ibfd2;
- bfd_boolean done_something;
-
- htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
-
- if (!htab->do_multi_toc)
- return FALSE;
-
- /* Merge global sym got entries within a toc group. */
- elf_link_hash_traverse (&htab->elf, merge_global_got, info);
-
- /* And tlsld_got. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- struct got_entry *ent, *ent2;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- ent = ppc64_tlsld_got (ibfd);
- if (!ent->is_indirect
- && ent->got.offset != (bfd_vma) -1)
- {
- for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
- {
- if (!is_ppc64_elf (ibfd2))
- continue;
-
- ent2 = ppc64_tlsld_got (ibfd2);
- if (!ent2->is_indirect
- && ent2->got.offset != (bfd_vma) -1
- && elf_gp (ibfd2) == elf_gp (ibfd))
- {
- ent2->is_indirect = TRUE;
- ent2->got.ent = ent;
- }
- }
- }
- }
-
- /* Zap sizes of got sections. */
- htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
- htab->elf.irelplt->size -= htab->got_reli_size;
- htab->got_reli_size = 0;
-
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- asection *got, *relgot;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- got = ppc64_elf_tdata (ibfd)->got;
- if (got != NULL)
- {
- got->rawsize = got->size;
- got->size = 0;
- relgot = ppc64_elf_tdata (ibfd)->relgot;
- relgot->rawsize = relgot->size;
- relgot->size = 0;
- }
- }
-
- /* Now reallocate the got, local syms first. We don't need to
- allocate section contents again since we never increase size. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- struct got_entry **lgot_ents;
- struct got_entry **end_lgot_ents;
- struct plt_entry **local_plt;
- struct plt_entry **end_local_plt;
- unsigned char *lgot_masks;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *s;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- lgot_ents = elf_local_got_ents (ibfd);
- if (!lgot_ents)
- continue;
-
- symtab_hdr = &elf_symtab_hdr (ibfd);
- locsymcount = symtab_hdr->sh_info;
- end_lgot_ents = lgot_ents + locsymcount;
- local_plt = (struct plt_entry **) end_lgot_ents;
- end_local_plt = local_plt + locsymcount;
- lgot_masks = (unsigned char *) end_local_plt;
- s = ppc64_elf_tdata (ibfd)->got;
- for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
- {
- struct got_entry *ent;
-
- for (ent = *lgot_ents; ent != NULL; ent = ent->next)
- {
- unsigned int ent_size = 8;
- unsigned int rel_size = sizeof (Elf64_External_Rela);
-
- ent->got.offset = s->size;
- if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
- {
- ent_size *= 2;
- rel_size *= 2;
- }
- s->size += ent_size;
- if ((*lgot_masks & PLT_IFUNC) != 0)
- {
- htab->elf.irelplt->size += rel_size;
- htab->got_reli_size += rel_size;
- }
- else if (info->shared)
- {
- asection *srel = ppc64_elf_tdata (ibfd)->relgot;
- srel->size += rel_size;
- }
- }
- }
- }
-
- elf_link_hash_traverse (&htab->elf, reallocate_got, info);
-
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- struct got_entry *ent;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- ent = ppc64_tlsld_got (ibfd);
- if (!ent->is_indirect
- && ent->got.offset != (bfd_vma) -1)
- {
- asection *s = ppc64_elf_tdata (ibfd)->got;
- ent->got.offset = s->size;
- s->size += 16;
- if (info->shared)
- {
- asection *srel = ppc64_elf_tdata (ibfd)->relgot;
- srel->size += sizeof (Elf64_External_Rela);
- }
- }
- }
-
- done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
- if (!done_something)
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
- {
- asection *got;
-
- if (!is_ppc64_elf (ibfd))
- continue;
-
- got = ppc64_elf_tdata (ibfd)->got;
- if (got != NULL)
- {
- done_something = got->rawsize != got->size;
- if (done_something)
- break;
- }
- }
-
- if (done_something)
- (*htab->layout_sections_again) ();
-
- /* Set up for second pass over toc sections to recalculate elf_gp
- on input sections. */
- htab->toc_bfd = NULL;
- htab->toc_first_sec = NULL;
- htab->second_toc_pass = TRUE;
- return done_something;
-}
-
-/* Called after second pass of multitoc partitioning. */
-
-void
-ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- /* After the second pass, toc_curr tracks the TOC offset used
- for code sections below in ppc64_elf_next_input_section. */
- htab->toc_curr = TOC_BASE_OFF;
-}
-
-/* No toc references were found in ISEC. If the code in ISEC makes no
- calls, then there's no need to use toc adjusting stubs when branching
- into ISEC. Actually, indirect calls from ISEC are OK as they will
- load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
- needed, and 2 if a cyclical call-graph was found but no other reason
- for a stub was detected. If called from the top level, a return of
- 2 means the same as a return of 0. */
-
-static int
-toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
-{
- int ret;
-
- /* Mark this section as checked. */
- isec->call_check_done = 1;
-
- /* We know none of our code bearing sections will need toc stubs. */
- if ((isec->flags & SEC_LINKER_CREATED) != 0)
- return 0;
-
- if (isec->size == 0)
- return 0;
-
- if (isec->output_section == NULL)
- return 0;
-
- ret = 0;
- if (isec->reloc_count != 0)
- {
- Elf_Internal_Rela *relstart, *rel;
- Elf_Internal_Sym *local_syms;
- struct ppc_link_hash_table *htab;
-
- relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
- info->keep_memory);
- if (relstart == NULL)
- return -1;
-
- /* Look for branches to outside of this section. */
- local_syms = NULL;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return -1;
-
- for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- struct ppc_link_hash_entry *eh;
- Elf_Internal_Sym *sym;
- asection *sym_sec;
- struct _opd_sec_data *opd;
- bfd_vma sym_value;
- bfd_vma dest;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_type != R_PPC64_REL24
- && r_type != R_PPC64_REL14
- && r_type != R_PPC64_REL14_BRTAKEN
- && r_type != R_PPC64_REL14_BRNTAKEN)
- continue;
-
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
- isec->owner))
- {
- ret = -1;
- break;
- }
-
- /* Calls to dynamic lib functions go through a plt call stub
- that uses r2. */
- eh = (struct ppc_link_hash_entry *) h;
- if (eh != NULL
- && (eh->elf.plt.plist != NULL
- || (eh->oh != NULL
- && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
- {
- ret = 1;
- break;
- }
-
- if (sym_sec == NULL)
- /* Ignore other undefined symbols. */
- continue;
-
- /* Assume branches to other sections not included in the
- link need stubs too, to cover -R and absolute syms. */
- if (sym_sec->output_section == NULL)
- {
- ret = 1;
- break;
- }
-
- if (h == NULL)
- sym_value = sym->st_value;
- else
- {
- if (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- abort ();
- sym_value = h->root.u.def.value;
- }
- sym_value += rel->r_addend;
-
- /* If this branch reloc uses an opd sym, find the code section. */
- opd = get_opd_info (sym_sec);
- if (opd != NULL)
- {
- if (h == NULL && opd->adjust != NULL)
- {
- long adjust;
-
- adjust = opd->adjust[sym->st_value / 8];
- if (adjust == -1)
- /* Assume deleted functions won't ever be called. */
- continue;
- sym_value += adjust;
- }
-
- dest = opd_entry_value (sym_sec, sym_value,
- &sym_sec, NULL, FALSE);
- if (dest == (bfd_vma) -1)
- continue;
- }
- else
- dest = (sym_value
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
-
- /* Ignore branch to self. */
- if (sym_sec == isec)
- continue;
-
- /* If the called function uses the toc, we need a stub. */
- if (sym_sec->has_toc_reloc
- || sym_sec->makes_toc_func_call)
- {
- ret = 1;
- break;
- }
-
- /* Assume any branch that needs a long branch stub might in fact
- need a plt_branch stub. A plt_branch stub uses r2. */
- else if (dest - (isec->output_offset
- + isec->output_section->vma
- + rel->r_offset) + (1 << 25)
- >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
- ? h->other
- : sym->st_other))
- {
- ret = 1;
- break;
- }
-
- /* If calling back to a section in the process of being
- tested, we can't say for sure that no toc adjusting stubs
- are needed, so don't return zero. */
- else if (sym_sec->call_check_in_progress)
- ret = 2;
-
- /* Branches to another section that itself doesn't have any TOC
- references are OK. Recursively call ourselves to check. */
- else if (!sym_sec->call_check_done)
- {
- int recur;
-
- /* Mark current section as indeterminate, so that other
- sections that call back to current won't be marked as
- known. */
- isec->call_check_in_progress = 1;
- recur = toc_adjusting_stub_needed (info, sym_sec);
- isec->call_check_in_progress = 0;
-
- if (recur != 0)
- {
- ret = recur;
- if (recur != 2)
- break;
- }
- }
- }
-
- if (local_syms != NULL
- && (elf_symtab_hdr (isec->owner).contents
- != (unsigned char *) local_syms))
- free (local_syms);
- if (elf_section_data (isec)->relocs != relstart)
- free (relstart);
- }
-
- if ((ret & 1) == 0
- && isec->map_head.s != NULL
- && (strcmp (isec->output_section->name, ".init") == 0
- || strcmp (isec->output_section->name, ".fini") == 0))
- {
- if (isec->map_head.s->has_toc_reloc
- || isec->map_head.s->makes_toc_func_call)
- ret = 1;
- else if (!isec->map_head.s->call_check_done)
- {
- int recur;
- isec->call_check_in_progress = 1;
- recur = toc_adjusting_stub_needed (info, isec->map_head.s);
- isec->call_check_in_progress = 0;
- if (recur != 0)
- ret = recur;
- }
- }
-
- if (ret == 1)
- isec->makes_toc_func_call = 1;
-
- return ret;
-}
-
-/* The linker repeatedly calls this function for each input section,
- in the order that input sections are linked into output sections.
- Build lists of input sections to determine groupings between which
- we may insert linker stubs. */
-
-bfd_boolean
-ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab == NULL)
- return FALSE;
-
- if ((isec->output_section->flags & SEC_CODE) != 0
- && isec->output_section->index <= htab->top_index)
- {
- asection **list = htab->input_list + isec->output_section->index;
- /* Steal the link_sec pointer for our list. */
-#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
- /* This happens to make the list in reverse order,
- which is what we want. */
- PREV_SEC (isec) = *list;
- *list = isec;
- }
-
- if (htab->multi_toc_needed)
- {
- /* Analyse sections that aren't already flagged as needing a
- valid toc pointer. Exclude .fixup for the linux kernel.
- .fixup contains branches, but only back to the function that
- hit an exception. */
- if (!(isec->has_toc_reloc
- || (isec->flags & SEC_CODE) == 0
- || strcmp (isec->name, ".fixup") == 0
- || isec->call_check_done))
- {
- if (toc_adjusting_stub_needed (info, isec) < 0)
- return FALSE;
- }
- /* Make all sections use the TOC assigned for this object file.
- This will be wrong for pasted sections; We fix that in
- check_pasted_section(). */
- if (elf_gp (isec->owner) != 0)
- htab->toc_curr = elf_gp (isec->owner);
- }
-
- htab->stub_group[isec->id].toc_off = htab->toc_curr;
- return TRUE;
-}
-
-/* Check that all .init and .fini sections use the same toc, if they
- have toc relocs. */
-
-static bfd_boolean
-check_pasted_section (struct bfd_link_info *info, const char *name)
-{
- asection *o = bfd_get_section_by_name (info->output_bfd, name);
-
- if (o != NULL)
- {
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- bfd_vma toc_off = 0;
- asection *i;
-
- for (i = o->map_head.s; i != NULL; i = i->map_head.s)
- if (i->has_toc_reloc)
- {
- if (toc_off == 0)
- toc_off = htab->stub_group[i->id].toc_off;
- else if (toc_off != htab->stub_group[i->id].toc_off)
- return FALSE;
- }
-
- if (toc_off == 0)
- for (i = o->map_head.s; i != NULL; i = i->map_head.s)
- if (i->makes_toc_func_call)
- {
- toc_off = htab->stub_group[i->id].toc_off;
- break;
- }
-
- /* Make sure the whole pasted function uses the same toc offset. */
- if (toc_off != 0)
- for (i = o->map_head.s; i != NULL; i = i->map_head.s)
- htab->stub_group[i->id].toc_off = toc_off;
- }
- return TRUE;
-}
-
-bfd_boolean
-ppc64_elf_check_init_fini (struct bfd_link_info *info)
-{
- return (check_pasted_section (info, ".init")
- & check_pasted_section (info, ".fini"));
-}
-
-/* See whether we can group stub sections together. Grouping stub
- sections may result in fewer stubs. More importantly, we need to
- put all .init* and .fini* stubs at the beginning of the .init or
- .fini output sections respectively, because glibc splits the
- _init and _fini functions into multiple parts. Putting a stub in
- the middle of a function is not a good idea. */
-
-static void
-group_sections (struct ppc_link_hash_table *htab,
- bfd_size_type stub_group_size,
- bfd_boolean stubs_always_before_branch)
-{
- asection **list;
- bfd_size_type stub14_group_size;
- bfd_boolean suppress_size_errors;
-
- suppress_size_errors = FALSE;
- stub14_group_size = stub_group_size;
- if (stub_group_size == 1)
- {
- /* Default values. */
- if (stubs_always_before_branch)
- {
- stub_group_size = 0x1e00000;
- stub14_group_size = 0x7800;
- }
- else
- {
- stub_group_size = 0x1c00000;
- stub14_group_size = 0x7000;
- }
- suppress_size_errors = TRUE;
- }
-
- list = htab->input_list + htab->top_index;
- do
- {
- asection *tail = *list;
- while (tail != NULL)
- {
- asection *curr;
- asection *prev;
- bfd_size_type total;
- bfd_boolean big_sec;
- bfd_vma curr_toc;
-
- curr = tail;
- total = tail->size;
- big_sec = total > (ppc64_elf_section_data (tail) != NULL
- && ppc64_elf_section_data (tail)->has_14bit_branch
- ? stub14_group_size : stub_group_size);
- if (big_sec && !suppress_size_errors)
- (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
- tail->owner, tail);
- curr_toc = htab->stub_group[tail->id].toc_off;
-
- while ((prev = PREV_SEC (curr)) != NULL
- && ((total += curr->output_offset - prev->output_offset)
- < (ppc64_elf_section_data (prev) != NULL
- && ppc64_elf_section_data (prev)->has_14bit_branch
- ? stub14_group_size : stub_group_size))
- && htab->stub_group[prev->id].toc_off == curr_toc)
- curr = prev;
-
- /* OK, the size from the start of CURR to the end is less
- than stub_group_size and thus can be handled by one stub
- section. (or the tail section is itself larger than
- stub_group_size, in which case we may be toast.) We
- should really be keeping track of the total size of stubs
- added here, as stubs contribute to the final output
- section size. That's a little tricky, and this way will
- only break if stubs added make the total size more than
- 2^25, ie. for the default stub_group_size, if stubs total
- more than 2097152 bytes, or nearly 75000 plt call stubs. */
- do
- {
- prev = PREV_SEC (tail);
- /* Set up this stub group. */
- htab->stub_group[tail->id].link_sec = curr;
- }
- while (tail != curr && (tail = prev) != NULL);
-
- /* But wait, there's more! Input sections up to stub_group_size
- bytes before the stub section can be handled by it too.
- Don't do this if we have a really large section after the
- stubs, as adding more stubs increases the chance that
- branches may not reach into the stub section. */
- if (!stubs_always_before_branch && !big_sec)
- {
- total = 0;
- while (prev != NULL
- && ((total += tail->output_offset - prev->output_offset)
- < (ppc64_elf_section_data (prev) != NULL
- && ppc64_elf_section_data (prev)->has_14bit_branch
- ? stub14_group_size : stub_group_size))
- && htab->stub_group[prev->id].toc_off == curr_toc)
- {
- tail = prev;
- prev = PREV_SEC (tail);
- htab->stub_group[tail->id].link_sec = curr;
- }
- }
- tail = prev;
- }
- }
- while (list-- != htab->input_list);
- free (htab->input_list);
-#undef PREV_SEC
-}
-
-static const unsigned char glink_eh_frame_cie[] =
-{
- 0, 0, 0, 16, /* length. */
- 0, 0, 0, 0, /* id. */
- 1, /* CIE version. */
- 'z', 'R', 0, /* Augmentation string. */
- 4, /* Code alignment. */
- 0x78, /* Data alignment. */
- 65, /* RA reg. */
- 1, /* Augmentation size. */
- DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
- DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
-};
-
-/* Stripping output sections is normally done before dynamic section
- symbols have been allocated. This function is called later, and
- handles cases like htab->brlt which is mapped to its own output
- section. */
-
-static void
-maybe_strip_output (struct bfd_link_info *info, asection *isec)
-{
- if (isec->size == 0
- && isec->output_section->size == 0
- && !(isec->output_section->flags & SEC_KEEP)
- && !bfd_section_removed_from_list (info->output_bfd,
- isec->output_section)
- && elf_section_data (isec->output_section)->dynindx == 0)
- {
- isec->output_section->flags |= SEC_EXCLUDE;
- bfd_section_list_remove (info->output_bfd, isec->output_section);
- info->output_bfd->section_count--;
- }
-}
-
-/* Determine and set the size of the stub section for a final link.
-
- The basic idea here is to examine all the relocations looking for
- PC-relative calls to a target that is unreachable with a "bl"
- instruction. */
-
-bfd_boolean
-ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
- bfd_boolean plt_static_chain, int plt_thread_safe,
- int plt_stub_align)
-{
- bfd_size_type stub_group_size;
- bfd_boolean stubs_always_before_branch;
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab == NULL)
- return FALSE;
-
- htab->plt_static_chain = plt_static_chain;
- htab->plt_stub_align = plt_stub_align;
- if (plt_thread_safe == -1 && !info->executable)
- plt_thread_safe = 1;
- if (!htab->opd_abi)
- plt_thread_safe = 0;
- else if (plt_thread_safe == -1)
- {
- static const char *const thread_starter[] =
- {
- "pthread_create",
- /* libstdc++ */
- "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
- /* librt */
- "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
- "mq_notify", "create_timer",
- /* libanl */
- "getaddrinfo_a",
- /* libgomp */
- "GOMP_parallel_start",
- "GOMP_parallel_loop_static_start",
- "GOMP_parallel_loop_dynamic_start",
- "GOMP_parallel_loop_guided_start",
- "GOMP_parallel_loop_runtime_start",
- "GOMP_parallel_sections_start",
- };
- unsigned i;
-
- for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
- {
- struct elf_link_hash_entry *h;
- h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
- FALSE, FALSE, TRUE);
- plt_thread_safe = h != NULL && h->ref_regular;
- if (plt_thread_safe)
- break;
- }
- }
- htab->plt_thread_safe = plt_thread_safe;
- stubs_always_before_branch = group_size < 0;
- if (group_size < 0)
- stub_group_size = -group_size;
- else
- stub_group_size = group_size;
-
- group_sections (htab, stub_group_size, stubs_always_before_branch);
-
- while (1)
- {
- bfd *input_bfd;
- unsigned int bfd_indx;
- asection *stub_sec;
-
- htab->stub_iteration += 1;
-
- for (input_bfd = info->input_bfds, bfd_indx = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link_next, bfd_indx++)
- {
- Elf_Internal_Shdr *symtab_hdr;
- asection *section;
- Elf_Internal_Sym *local_syms = NULL;
-
- if (!is_ppc64_elf (input_bfd))
- continue;
-
- /* We'll need the symbol table in a second. */
- symtab_hdr = &elf_symtab_hdr (input_bfd);
- if (symtab_hdr->sh_info == 0)
- continue;
-
- /* Walk over each section attached to the input bfd. */
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next)
- {
- Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
-
- /* If there aren't any relocs, then there's nothing more
- to do. */
- if ((section->flags & SEC_RELOC) == 0
- || (section->flags & SEC_ALLOC) == 0
- || (section->flags & SEC_LOAD) == 0
- || (section->flags & SEC_CODE) == 0
- || section->reloc_count == 0)
- continue;
-
- /* If this section is a link-once section that will be
- discarded, then don't create any stubs. */
- if (section->output_section == NULL
- || section->output_section->owner != info->output_bfd)
- continue;
-
- /* Get the relocs. */
- internal_relocs
- = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
- info->keep_memory);
- if (internal_relocs == NULL)
- goto error_ret_free_local;
-
- /* Now examine each relocation. */
- irela = internal_relocs;
- irelaend = irela + section->reloc_count;
- for (; irela < irelaend; irela++)
- {
- enum elf_ppc64_reloc_type r_type;
- unsigned int r_indx;
- enum ppc_stub_type stub_type;
- struct ppc_stub_hash_entry *stub_entry;
- asection *sym_sec, *code_sec;
- bfd_vma sym_value, code_value;
- bfd_vma destination;
- unsigned long local_off;
- bfd_boolean ok_dest;
- struct ppc_link_hash_entry *hash;
- struct ppc_link_hash_entry *fdh;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- char *stub_name;
- const asection *id_sec;
- struct _opd_sec_data *opd;
- struct plt_entry *plt_ent;
-
- r_type = ELF64_R_TYPE (irela->r_info);
- r_indx = ELF64_R_SYM (irela->r_info);
-
- if (r_type >= R_PPC64_max)
- {
- bfd_set_error (bfd_error_bad_value);
- goto error_ret_free_internal;
- }
-
- /* Only look for stubs on branch instructions. */
- if (r_type != R_PPC64_REL24
- && r_type != R_PPC64_REL14
- && r_type != R_PPC64_REL14_BRTAKEN
- && r_type != R_PPC64_REL14_BRNTAKEN)
- continue;
-
- /* Now determine the call target, its name, value,
- section. */
- if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
- r_indx, input_bfd))
- goto error_ret_free_internal;
- hash = (struct ppc_link_hash_entry *) h;
-
- ok_dest = FALSE;
- fdh = NULL;
- sym_value = 0;
- if (hash == NULL)
- {
- sym_value = sym->st_value;
- ok_dest = TRUE;
- }
- else if (hash->elf.root.type == bfd_link_hash_defined
- || hash->elf.root.type == bfd_link_hash_defweak)
- {
- sym_value = hash->elf.root.u.def.value;
- if (sym_sec->output_section != NULL)
- ok_dest = TRUE;
- }
- else if (hash->elf.root.type == bfd_link_hash_undefweak
- || hash->elf.root.type == bfd_link_hash_undefined)
- {
- /* Recognise an old ABI func code entry sym, and
- use the func descriptor sym instead if it is
- defined. */
- if (hash->elf.root.root.string[0] == '.'
- && (fdh = lookup_fdh (hash, htab)) != NULL)
- {
- if (fdh->elf.root.type == bfd_link_hash_defined
- || fdh->elf.root.type == bfd_link_hash_defweak)
- {
- sym_sec = fdh->elf.root.u.def.section;
- sym_value = fdh->elf.root.u.def.value;
- if (sym_sec->output_section != NULL)
- ok_dest = TRUE;
- }
- else
- fdh = NULL;
- }
- }
- else
- {
- bfd_set_error (bfd_error_bad_value);
- goto error_ret_free_internal;
- }
-
- destination = 0;
- local_off = 0;
- if (ok_dest)
- {
- sym_value += irela->r_addend;
- destination = (sym_value
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
- ? hash->elf.other
- : sym->st_other);
- }
-
- code_sec = sym_sec;
- code_value = sym_value;
- opd = get_opd_info (sym_sec);
- if (opd != NULL)
- {
- bfd_vma dest;
-
- if (hash == NULL && opd->adjust != NULL)
- {
- long adjust = opd->adjust[sym_value / 8];
- if (adjust == -1)
- continue;
- code_value += adjust;
- sym_value += adjust;
- }
- dest = opd_entry_value (sym_sec, sym_value,
- &code_sec, &code_value, FALSE);
- if (dest != (bfd_vma) -1)
- {
- destination = dest;
- if (fdh != NULL)
- {
- /* Fixup old ABI sym to point at code
- entry. */
- hash->elf.root.type = bfd_link_hash_defweak;
- hash->elf.root.u.def.section = code_sec;
- hash->elf.root.u.def.value = code_value;
- }
- }
- }
-
- /* Determine what (if any) linker stub is needed. */
- plt_ent = NULL;
- stub_type = ppc_type_of_stub (section, irela, &hash,
- &plt_ent, destination,
- local_off);
-
- if (stub_type != ppc_stub_plt_call)
- {
- /* Check whether we need a TOC adjusting stub.
- Since the linker pastes together pieces from
- different object files when creating the
- _init and _fini functions, it may be that a
- call to what looks like a local sym is in
- fact a call needing a TOC adjustment. */
- if (code_sec != NULL
- && code_sec->output_section != NULL
- && (htab->stub_group[code_sec->id].toc_off
- != htab->stub_group[section->id].toc_off)
- && (code_sec->has_toc_reloc
- || code_sec->makes_toc_func_call))
- stub_type = ppc_stub_long_branch_r2off;
- }
-
- if (stub_type == ppc_stub_none)
- continue;
-
- /* __tls_get_addr calls might be eliminated. */
- if (stub_type != ppc_stub_plt_call
- && hash != NULL
- && (hash == htab->tls_get_addr
- || hash == htab->tls_get_addr_fd)
- && section->has_tls_reloc
- && irela != internal_relocs)
- {
- /* Get tls info. */
- unsigned char *tls_mask;
-
- if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
- irela - 1, input_bfd))
- goto error_ret_free_internal;
- if (*tls_mask != 0)
- continue;
- }
-
- if (stub_type == ppc_stub_plt_call
- && irela + 1 < irelaend
- && irela[1].r_offset == irela->r_offset + 4
- && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
- {
- if (!tocsave_find (htab, INSERT,
- &local_syms, irela + 1, input_bfd))
- goto error_ret_free_internal;
- }
- else if (stub_type == ppc_stub_plt_call)
- stub_type = ppc_stub_plt_call_r2save;
-
- /* Support for grouping stub sections. */
- id_sec = htab->stub_group[section->id].link_sec;
-
- /* Get the name of this stub. */
- stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
- if (!stub_name)
- goto error_ret_free_internal;
-
- stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
- stub_name, FALSE, FALSE);
- if (stub_entry != NULL)
- {
- /* The proper stub has already been created. */
- free (stub_name);
- if (stub_type == ppc_stub_plt_call_r2save)
- stub_entry->stub_type = stub_type;
- continue;
- }
-
- stub_entry = ppc_add_stub (stub_name, section, info);
- if (stub_entry == NULL)
- {
- free (stub_name);
- error_ret_free_internal:
- if (elf_section_data (section)->relocs == NULL)
- free (internal_relocs);
- error_ret_free_local:
- if (local_syms != NULL
- && (symtab_hdr->contents
- != (unsigned char *) local_syms))
- free (local_syms);
- return FALSE;
- }
-
- stub_entry->stub_type = stub_type;
- if (stub_type != ppc_stub_plt_call
- && stub_type != ppc_stub_plt_call_r2save)
- {
- stub_entry->target_value = code_value;
- stub_entry->target_section = code_sec;
- }
- else
- {
- stub_entry->target_value = sym_value;
- stub_entry->target_section = sym_sec;
- }
- stub_entry->h = hash;
- stub_entry->plt_ent = plt_ent;
- stub_entry->other = hash ? hash->elf.other : sym->st_other;
-
- if (stub_entry->h != NULL)
- htab->stub_globals += 1;
- }
-
- /* We're done with the internal relocs, free them. */
- if (elf_section_data (section)->relocs != internal_relocs)
- free (internal_relocs);
- }
-
- if (local_syms != NULL
- && symtab_hdr->contents != (unsigned char *) local_syms)
- {
- if (!info->keep_memory)
- free (local_syms);
- else
- symtab_hdr->contents = (unsigned char *) local_syms;
- }
- }
-
- /* We may have added some stubs. Find out the new size of the
- stub sections. */
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- {
- stub_sec->rawsize = stub_sec->size;
- stub_sec->size = 0;
- stub_sec->reloc_count = 0;
- stub_sec->flags &= ~SEC_RELOC;
- }
-
- htab->brlt->size = 0;
- htab->brlt->reloc_count = 0;
- htab->brlt->flags &= ~SEC_RELOC;
- if (htab->relbrlt != NULL)
- htab->relbrlt->size = 0;
-
- bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
-
- if (info->emitrelocations
- && htab->glink != NULL && htab->glink->size != 0)
- {
- htab->glink->reloc_count = 1;
- htab->glink->flags |= SEC_RELOC;
- }
-
- if (htab->glink_eh_frame != NULL
- && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
- && htab->glink_eh_frame->output_section->size != 0)
- {
- size_t size = 0, align;
-
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- size += 20;
- if (htab->glink != NULL && htab->glink->size != 0)
- size += 24;
- if (size != 0)
- size += sizeof (glink_eh_frame_cie);
- align = 1;
- align <<= htab->glink_eh_frame->output_section->alignment_power;
- align -= 1;
- size = (size + align) & ~align;
- htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
- htab->glink_eh_frame->size = size;
- }
-
- if (htab->plt_stub_align != 0)
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
- & (-1 << htab->plt_stub_align));
-
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
- && stub_sec->rawsize != stub_sec->size)
- break;
-
- /* Exit from this loop when no stubs have been added, and no stubs
- have changed size. */
- if (stub_sec == NULL
- && (htab->glink_eh_frame == NULL
- || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
- break;
-
- /* Ask the linker to do its stuff. */
- (*htab->layout_sections_again) ();
- }
-
- maybe_strip_output (info, htab->brlt);
- if (htab->glink_eh_frame != NULL)
- maybe_strip_output (info, htab->glink_eh_frame);
-
- return TRUE;
-}
-
-/* Called after we have determined section placement. If sections
- move, we'll be called again. Provide a value for TOCstart. */
-
-bfd_vma
-ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
-{
- asection *s;
- bfd_vma TOCstart;
-
- /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
- order. The TOC starts where the first of these sections starts. */
- s = bfd_get_section_by_name (obfd, ".got");
- if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
- s = bfd_get_section_by_name (obfd, ".toc");
- if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
- s = bfd_get_section_by_name (obfd, ".tocbss");
- if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
- s = bfd_get_section_by_name (obfd, ".plt");
- if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
- {
- /* This may happen for
- o references to TOC base (SYM@toc / TOC[tc0]) without a
- .toc directive
- o bad linker script
- o --gc-sections and empty TOC sections
-
- FIXME: Warn user? */
-
- /* Look for a likely section. We probably won't even be
- using TOCstart. */
- for (s = obfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
- | SEC_EXCLUDE))
- == (SEC_ALLOC | SEC_SMALL_DATA))
- break;
- if (s == NULL)
- for (s = obfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
- == (SEC_ALLOC | SEC_SMALL_DATA))
- break;
- if (s == NULL)
- for (s = obfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
- == SEC_ALLOC)
- break;
- if (s == NULL)
- for (s = obfd->sections; s != NULL; s = s->next)
- if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
- break;
- }
-
- TOCstart = 0;
- if (s != NULL)
- TOCstart = s->output_section->vma + s->output_offset;
-
- _bfd_set_gp_value (obfd, TOCstart);
-
- if (info != NULL && s != NULL && is_ppc64_elf (obfd))
- {
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab != NULL
- && htab->elf.hgot != NULL)
- {
- htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
- htab->elf.hgot->root.u.def.section = s;
- }
- }
- return TOCstart;
-}
-
-/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
- write out any global entry stubs. */
-
-static bfd_boolean
-build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
-{
- struct bfd_link_info *info;
- struct ppc_link_hash_table *htab;
- struct plt_entry *pent;
- asection *s;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- if (!h->pointer_equality_needed)
- return TRUE;
-
- if (h->def_regular)
- return TRUE;
-
- info = inf;
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- s = htab->glink;
- for (pent = h->plt.plist; pent != NULL; pent = pent->next)
- if (pent->plt.offset != (bfd_vma) -1
- && pent->addend == 0)
- {
- bfd_byte *p;
- asection *plt;
- bfd_vma off;
-
- p = s->contents + h->root.u.def.value;
- plt = htab->elf.splt;
- if (!htab->elf.dynamic_sections_created
- || h->dynindx == -1)
- plt = htab->elf.iplt;
- off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
- off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
-
- if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
- {
- info->callbacks->einfo
- (_("%P: linkage table error against `%T'\n"),
- h->root.root.string);
- bfd_set_error (bfd_error_bad_value);
- htab->stub_error = TRUE;
- }
-
- if (PPC_HA (off) != 0)
- {
- bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
- p += 4;
- }
- bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
- p += 4;
- bfd_put_32 (s->owner, MTCTR_R12, p);
- p += 4;
- bfd_put_32 (s->owner, BCTR, p);
- break;
- }
- return TRUE;
-}
-
-/* Build all the stubs associated with the current output file.
- The stubs are kept in a hash table attached to the main linker
- hash table. This function is called via gldelf64ppc_finish. */
-
-bfd_boolean
-ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
- struct bfd_link_info *info,
- char **stats)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
- asection *stub_sec;
- bfd_byte *p;
- int stub_sec_count = 0;
-
- if (htab == NULL)
- return FALSE;
-
- htab->emit_stub_syms = emit_stub_syms;
-
- /* Allocate memory to hold the linker stubs. */
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
- && stub_sec->size != 0)
- {
- stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
- if (stub_sec->contents == NULL)
- return FALSE;
- /* We want to check that built size is the same as calculated
- size. rawsize is a convenient location to use. */
- stub_sec->rawsize = stub_sec->size;
- stub_sec->size = 0;
- }
-
- if (htab->glink != NULL && htab->glink->size != 0)
- {
- unsigned int indx;
- bfd_vma plt0;
-
- /* Build the .glink plt call stub. */
- if (htab->emit_stub_syms)
- {
- struct elf_link_hash_entry *h;
- h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
- TRUE, FALSE, FALSE);
- if (h == NULL)
- return FALSE;
- if (h->root.type == bfd_link_hash_new)
- {
- h->root.type = bfd_link_hash_defined;
- h->root.u.def.section = htab->glink;
- h->root.u.def.value = 8;
- h->ref_regular = 1;
- h->def_regular = 1;
- h->ref_regular_nonweak = 1;
- h->forced_local = 1;
- h->non_elf = 0;
- }
- }
- plt0 = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- - 16);
- if (info->emitrelocations)
- {
- Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
- if (r == NULL)
- return FALSE;
- r->r_offset = (htab->glink->output_offset
- + htab->glink->output_section->vma);
- r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
- r->r_addend = plt0;
- }
- p = htab->glink->contents;
- plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
- bfd_put_64 (htab->glink->owner, plt0, p);
- p += 8;
- if (htab->opd_abi)
- {
- bfd_put_32 (htab->glink->owner, MFLR_R12, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, BCL_20_31, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MFLR_R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MTLR_R12, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
- p += 4;
- }
- else
- {
- bfd_put_32 (htab->glink->owner, MFLR_R0, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, BCL_20_31, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MFLR_R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MTLR_R0, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
- p += 4;
- bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
- p += 4;
- }
- bfd_put_32 (htab->glink->owner, BCTR, p);
- p += 4;
- while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
- {
- bfd_put_32 (htab->glink->owner, NOP, p);
- p += 4;
- }
-
- /* Build the .glink lazy link call stubs. */
- indx = 0;
- while (p < htab->glink->contents + htab->glink->rawsize)
- {
- if (htab->opd_abi)
- {
- if (indx < 0x8000)
- {
- bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
- p += 4;
- }
- else
- {
- bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
- p += 4;
- bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
- p);
- p += 4;
- }
- }
- bfd_put_32 (htab->glink->owner,
- B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
- indx++;
- p += 4;
- }
-
- /* Build .glink global entry stubs. */
- if (htab->glink->size > htab->glink->rawsize)
- elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
- }
-
- if (htab->brlt->size != 0)
- {
- htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
- htab->brlt->size);
- if (htab->brlt->contents == NULL)
- return FALSE;
- }
- if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
- {
- htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
- htab->relbrlt->size);
- if (htab->relbrlt->contents == NULL)
- return FALSE;
- }
-
- if (htab->glink_eh_frame != NULL
- && htab->glink_eh_frame->size != 0)
- {
- bfd_vma val;
- bfd_byte *last_fde;
- size_t last_fde_len, size, align, pad;
-
- p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
- if (p == NULL)
- return FALSE;
- htab->glink_eh_frame->contents = p;
- last_fde = p;
-
- htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
-
- memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
- /* CIE length (rewrite in case little-endian). */
- last_fde_len = sizeof (glink_eh_frame_cie) - 4;
- bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
- p += sizeof (glink_eh_frame_cie);
-
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- {
- last_fde = p;
- last_fde_len = 16;
- /* FDE length. */
- bfd_put_32 (htab->elf.dynobj, 16, p);
- p += 4;
- /* CIE pointer. */
- val = p - htab->glink_eh_frame->contents;
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* Offset to stub section. */
- val = (stub_sec->output_section->vma
- + stub_sec->output_offset);
- val -= (htab->glink_eh_frame->output_section->vma
- + htab->glink_eh_frame->output_offset);
- val -= p - htab->glink_eh_frame->contents;
- if (val + 0x80000000 > 0xffffffff)
- {
- info->callbacks->einfo
- (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
- stub_sec->name);
- return FALSE;
- }
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* stub section size. */
- bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
- p += 4;
- /* Augmentation. */
- p += 1;
- /* Pad. */
- p += 3;
- }
- if (htab->glink != NULL && htab->glink->size != 0)
- {
- last_fde = p;
- last_fde_len = 20;
- /* FDE length. */
- bfd_put_32 (htab->elf.dynobj, 20, p);
- p += 4;
- /* CIE pointer. */
- val = p - htab->glink_eh_frame->contents;
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* Offset to .glink. */
- val = (htab->glink->output_section->vma
- + htab->glink->output_offset
- + 8);
- val -= (htab->glink_eh_frame->output_section->vma
- + htab->glink_eh_frame->output_offset);
- val -= p - htab->glink_eh_frame->contents;
- if (val + 0x80000000 > 0xffffffff)
- {
- info->callbacks->einfo
- (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
- htab->glink->name);
- return FALSE;
- }
- bfd_put_32 (htab->elf.dynobj, val, p);
- p += 4;
- /* .glink size. */
- bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
- p += 4;
- /* Augmentation. */
- p += 1;
-
- *p++ = DW_CFA_advance_loc + 1;
- *p++ = DW_CFA_register;
- *p++ = 65;
- *p++ = 12;
- *p++ = DW_CFA_advance_loc + 4;
- *p++ = DW_CFA_restore_extended;
- *p++ = 65;
- }
- /* Subsume any padding into the last FDE if user .eh_frame
- sections are aligned more than glink_eh_frame. Otherwise any
- zero padding will be seen as a terminator. */
- size = p - htab->glink_eh_frame->contents;
- align = 1;
- align <<= htab->glink_eh_frame->output_section->alignment_power;
- align -= 1;
- pad = ((size + align) & ~align) - size;
- htab->glink_eh_frame->size = size + pad;
- bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
- }
-
- /* Build the stubs as directed by the stub hash table. */
- bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
-
- if (htab->relbrlt != NULL)
- htab->relbrlt->reloc_count = 0;
-
- if (htab->plt_stub_align != 0)
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
- & (-1 << htab->plt_stub_align));
-
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- {
- stub_sec_count += 1;
- if (stub_sec->rawsize != stub_sec->size)
- break;
- }
-
- if (stub_sec != NULL
- || (htab->glink_eh_frame != NULL
- && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
- {
- htab->stub_error = TRUE;
- info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
- }
-
- if (htab->stub_error)
- return FALSE;
-
- if (stats != NULL)
- {
- *stats = bfd_malloc (500);
- if (*stats == NULL)
- return FALSE;
-
- sprintf (*stats, _("linker stubs in %u group%s\n"
- " branch %lu\n"
- " toc adjust %lu\n"
- " long branch %lu\n"
- " long toc adj %lu\n"
- " plt call %lu\n"
- " plt call toc %lu"),
- stub_sec_count,
- stub_sec_count == 1 ? "" : "s",
- htab->stub_count[ppc_stub_long_branch - 1],
- htab->stub_count[ppc_stub_long_branch_r2off - 1],
- htab->stub_count[ppc_stub_plt_branch - 1],
- htab->stub_count[ppc_stub_plt_branch_r2off - 1],
- htab->stub_count[ppc_stub_plt_call - 1],
- htab->stub_count[ppc_stub_plt_call_r2save - 1]);
- }
- return TRUE;
-}
-
-/* This function undoes the changes made by add_symbol_adjust. */
-
-static bfd_boolean
-undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
-{
- struct ppc_link_hash_entry *eh;
-
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
-
- eh = (struct ppc_link_hash_entry *) h;
- if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
- return TRUE;
-
- eh->elf.root.type = bfd_link_hash_undefined;
- return TRUE;
-}
-
-void
-ppc64_elf_restore_symbols (struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (htab != NULL)
- elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
-}
-
-/* What to do when ld finds relocations against symbols defined in
- discarded sections. */
-
-static unsigned int
-ppc64_elf_action_discarded (asection *sec)
-{
- if (strcmp (".opd", sec->name) == 0)
- return 0;
-
- if (strcmp (".toc", sec->name) == 0)
- return 0;
-
- if (strcmp (".toc1", sec->name) == 0)
- return 0;
-
- return _bfd_elf_default_action_discarded (sec);
-}
-
-/* The RELOCATE_SECTION function is called by the ELF backend linker
- to handle the relocations for a section.
-
- The relocs are always passed as Rela structures; if the section
- actually uses Rel structures, the r_addend field will always be
- zero.
-
- This function is responsible for adjust the section contents as
- necessary, and (if using Rela relocs and generating a
- relocatable output file) adjusting the reloc addend as
- necessary.
-
- This function does not have to worry about setting the reloc
- address or the reloc symbol index.
-
- LOCAL_SYMS is a pointer to the swapped in local symbols.
-
- LOCAL_SECTIONS is an array giving the section in the input file
- corresponding to the st_shndx field of each local symbol.
-
- The global hash table entry for the global symbols can be found
- via elf_sym_hashes (input_bfd).
-
- When generating relocatable output, this function must handle
- STB_LOCAL/STT_SECTION symbols specially. The output symbol is
- going to be the section symbol corresponding to the output
- section, which means that the addend must be adjusted
- accordingly. */
-
-static bfd_boolean
-ppc64_elf_relocate_section (bfd *output_bfd,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
-{
- struct ppc_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- struct got_entry **local_got_ents;
- bfd_vma TOCstart;
- bfd_boolean ret = TRUE;
- bfd_boolean is_opd;
- /* Assume 'at' branch hints. */
- bfd_boolean is_isa_v2 = TRUE;
- bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
-
- /* Initialize howto table if needed. */
- if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
- ppc_howto_init ();
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- /* Don't relocate stub sections. */
- if (input_section->owner == htab->stub_bfd)
- return TRUE;
-
- BFD_ASSERT (is_ppc64_elf (input_bfd));
-
- local_got_ents = elf_local_got_ents (input_bfd);
- TOCstart = elf_gp (output_bfd);
- symtab_hdr = &elf_symtab_hdr (input_bfd);
- sym_hashes = elf_sym_hashes (input_bfd);
- is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
-
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- enum elf_ppc64_reloc_type r_type;
- bfd_vma addend;
- bfd_reloc_status_type r;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h_elf;
- struct ppc_link_hash_entry *h;
- struct ppc_link_hash_entry *fdh;
- const char *sym_name;
- unsigned long r_symndx, toc_symndx;
- bfd_vma toc_addend;
- unsigned char tls_mask, tls_gd, tls_type;
- unsigned char sym_type;
- bfd_vma relocation;
- bfd_boolean unresolved_reloc;
- bfd_boolean warned;
- enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
- unsigned int insn;
- unsigned int mask;
- struct ppc_stub_hash_entry *stub_entry;
- bfd_vma max_br_offset;
- bfd_vma from;
- const Elf_Internal_Rela orig_rel = *rel;
-
- r_type = ELF64_R_TYPE (rel->r_info);
- r_symndx = ELF64_R_SYM (rel->r_info);
-
- /* For old style R_PPC64_TOC relocs with a zero symbol, use the
- symbol of the previous ADDR64 reloc. The symbol gives us the
- proper TOC base to use. */
- if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
- && rel != relocs
- && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
- && is_opd)
- r_symndx = ELF64_R_SYM (rel[-1].r_info);
-
- sym = NULL;
- sec = NULL;
- h_elf = NULL;
- sym_name = NULL;
- unresolved_reloc = FALSE;
- warned = FALSE;
-
- if (r_symndx < symtab_hdr->sh_info)
- {
- /* It's a local symbol. */
- struct _opd_sec_data *opd;
-
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
- sym_type = ELF64_ST_TYPE (sym->st_info);
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- opd = get_opd_info (sec);
- if (opd != NULL && opd->adjust != NULL)
- {
- long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
- if (adjust == -1)
- relocation = 0;
- else
- {
- /* If this is a relocation against the opd section sym
- and we have edited .opd, adjust the reloc addend so
- that ld -r and ld --emit-relocs output is correct.
- If it is a reloc against some other .opd symbol,
- then the symbol value will be adjusted later. */
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- rel->r_addend += adjust;
- else
- relocation += adjust;
- }
- }
- }
- else
- {
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h_elf, sec, relocation,
- unresolved_reloc, warned);
- sym_name = h_elf->root.root.string;
- sym_type = h_elf->type;
- if (sec != NULL
- && sec->owner == output_bfd
- && strcmp (sec->name, ".opd") == 0)
- {
- /* This is a symbol defined in a linker script. All
- such are defined in output sections, even those
- defined by simple assignment from a symbol defined in
- an input section. Transfer the symbol to an
- appropriate input .opd section, so that a branch to
- this symbol will be mapped to the location specified
- by the opd entry. */
- struct bfd_link_order *lo;
- for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
- if (lo->type == bfd_indirect_link_order)
- {
- asection *isec = lo->u.indirect.section;
- if (h_elf->root.u.def.value >= isec->output_offset
- && h_elf->root.u.def.value < (isec->output_offset
- + isec->size))
- {
- h_elf->root.u.def.value -= isec->output_offset;
- h_elf->root.u.def.section = isec;
- sec = isec;
- break;
- }
- }
- }
- }
- h = (struct ppc_link_hash_entry *) h_elf;
-
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend,
- ppc64_elf_howto_table[r_type], 0,
- contents);
-
- if (info->relocatable)
- continue;
-
- if (h != NULL && &h->elf == htab->elf.hgot)
- {
- relocation = (TOCstart
- + htab->stub_group[input_section->id].toc_off);
- sec = bfd_abs_section_ptr;
- unresolved_reloc = FALSE;
- }
-
- /* TLS optimizations. Replace instruction sequences and relocs
- based on information we collected in tls_optimize. We edit
- RELOCS so that --emit-relocs will output something sensible
- for the final instruction stream. */
- tls_mask = 0;
- tls_gd = 0;
- toc_symndx = 0;
- if (h != NULL)
- tls_mask = h->tls_mask;
- else if (local_got_ents != NULL)
- {
- struct plt_entry **local_plt = (struct plt_entry **)
- (local_got_ents + symtab_hdr->sh_info);
- unsigned char *lgot_masks = (unsigned char *)
- (local_plt + symtab_hdr->sh_info);
- tls_mask = lgot_masks[r_symndx];
- }
- if (tls_mask == 0
- && (r_type == R_PPC64_TLS
- || r_type == R_PPC64_TLSGD
- || r_type == R_PPC64_TLSLD))
- {
- /* Check for toc tls entries. */
- unsigned char *toc_tls;
-
- if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
- &local_syms, rel, input_bfd))
- return FALSE;
-
- if (toc_tls)
- tls_mask = *toc_tls;
- }
-
- /* Check that tls relocs are used with tls syms, and non-tls
- relocs are used with non-tls syms. */
- if (r_symndx != STN_UNDEF
- && r_type != R_PPC64_NONE
- && (h == NULL
- || h->elf.root.type == bfd_link_hash_defined
- || h->elf.root.type == bfd_link_hash_defweak)
- && (IS_PPC64_TLS_RELOC (r_type)
- != (sym_type == STT_TLS
- || (sym_type == STT_SECTION
- && (sec->flags & SEC_THREAD_LOCAL) != 0))))
- {
- if (tls_mask != 0
- && (r_type == R_PPC64_TLS
- || r_type == R_PPC64_TLSGD
- || r_type == R_PPC64_TLSLD))
- /* R_PPC64_TLS is OK against a symbol in the TOC. */
- ;
- else
- info->callbacks->einfo
- (!IS_PPC64_TLS_RELOC (r_type)
- ? _("%P: %H: %s used with TLS symbol `%T'\n")
- : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
- input_bfd, input_section, rel->r_offset,
- ppc64_elf_howto_table[r_type]->name,
- sym_name);
- }
-
- /* Ensure reloc mapping code below stays sane. */
- if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
- || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
- || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
- || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
- || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
- || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
- || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
- || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
- || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
- || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
- abort ();
-
- switch (r_type)
- {
- default:
- break;
-
- case R_PPC64_LO_DS_OPT:
- insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
- if ((insn & (0x3f << 26)) != 58u << 26)
- abort ();
- insn += (14u << 26) - (58u << 26);
- bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
- r_type = R_PPC64_TOC16_LO;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- break;
-
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- {
- /* Check for toc tls entries. */
- unsigned char *toc_tls;
- int retval;
-
- retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
- &local_syms, rel, input_bfd);
- if (retval == 0)
- return FALSE;
-
- if (toc_tls)
- {
- tls_mask = *toc_tls;
- if (r_type == R_PPC64_TOC16_DS
- || r_type == R_PPC64_TOC16_LO_DS)
- {
- if (tls_mask != 0
- && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
- goto toctprel;
- }
- else
- {
- /* If we found a GD reloc pair, then we might be
- doing a GD->IE transition. */
- if (retval == 2)
- {
- tls_gd = TLS_TPRELGD;
- if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
- goto tls_ldgd_opt;
- }
- else if (retval == 3)
- {
- if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
- goto tls_ldgd_opt;
- }
- }
- }
- }
- break;
-
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_TPREL16_HA:
- if (tls_mask != 0
- && (tls_mask & TLS_TPREL) == 0)
- {
- rel->r_offset -= d_offset;
- bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
- r_type = R_PPC64_NONE;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- break;
-
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- if (tls_mask != 0
- && (tls_mask & TLS_TPREL) == 0)
- {
- toctprel:
- insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
- insn &= 31 << 21;
- insn |= 0x3c0d0000; /* addis 0,13,0 */
- bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
- r_type = R_PPC64_TPREL16_HA;
- if (toc_symndx != 0)
- {
- rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
- rel->r_addend = toc_addend;
- /* We changed the symbol. Start over in order to
- get h, sym, sec etc. right. */
- rel--;
- continue;
- }
- else
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- break;
-
- case R_PPC64_TLS:
- if (tls_mask != 0
- && (tls_mask & TLS_TPREL) == 0)
- {
- insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
- insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
- if (insn == 0)
- abort ();
- bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
- /* Was PPC64_TLS which sits on insn boundary, now
- PPC64_TPREL16_LO which is at low-order half-word. */
- rel->r_offset += d_offset;
- r_type = R_PPC64_TPREL16_LO;
- if (toc_symndx != 0)
- {
- rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
- rel->r_addend = toc_addend;
- /* We changed the symbol. Start over in order to
- get h, sym, sec etc. right. */
- rel--;
- continue;
- }
- else
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- break;
-
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TLSGD16_HA:
- tls_gd = TLS_TPRELGD;
- if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
- goto tls_gdld_hi;
- break;
-
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSLD16_HA:
- if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
- {
- tls_gdld_hi:
- if ((tls_mask & tls_gd) != 0)
- r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
- + R_PPC64_GOT_TPREL16_DS);
- else
- {
- rel->r_offset -= d_offset;
- bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
- r_type = R_PPC64_NONE;
- }
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- break;
-
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
- tls_gd = TLS_TPRELGD;
- if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
- goto tls_ldgd_opt;
- break;
-
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
- if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
- {
- unsigned int insn1, insn2, insn3;
- bfd_vma offset;
-
- tls_ldgd_opt:
- offset = (bfd_vma) -1;
- /* If not using the newer R_PPC64_TLSGD/LD to mark
- __tls_get_addr calls, we must trust that the call
- stays with its arg setup insns, ie. that the next
- reloc is the __tls_get_addr call associated with
- the current reloc. Edit both insns. */
- if (input_section->has_tls_get_addr_call
- && rel + 1 < relend
- && branch_reloc_hash_match (input_bfd, rel + 1,
- htab->tls_get_addr,
- htab->tls_get_addr_fd))
- offset = rel[1].r_offset;
- if ((tls_mask & tls_gd) != 0)
- {
- /* IE */
- insn1 = bfd_get_32 (output_bfd,
- contents + rel->r_offset - d_offset);
- insn1 &= (1 << 26) - (1 << 2);
- insn1 |= 58 << 26; /* ld */
- insn2 = 0x7c636a14; /* add 3,3,13 */
- if (offset != (bfd_vma) -1)
- rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
- if ((tls_mask & TLS_EXPLICIT) == 0)
- r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
- + R_PPC64_GOT_TPREL16_DS);
- else
- r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- else
- {
- /* LE */
- insn1 = 0x3c6d0000; /* addis 3,13,0 */
- insn2 = 0x38630000; /* addi 3,3,0 */
- if (tls_gd == 0)
- {
- /* Was an LD reloc. */
- if (toc_symndx)
- sec = local_sections[toc_symndx];
- for (r_symndx = 0;
- r_symndx < symtab_hdr->sh_info;
- r_symndx++)
- if (local_sections[r_symndx] == sec)
- break;
- if (r_symndx >= symtab_hdr->sh_info)
- r_symndx = STN_UNDEF;
- rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
- if (r_symndx != STN_UNDEF)
- rel->r_addend -= (local_syms[r_symndx].st_value
- + sec->output_offset
- + sec->output_section->vma);
- }
- else if (toc_symndx != 0)
- {
- r_symndx = toc_symndx;
- rel->r_addend = toc_addend;
- }
- r_type = R_PPC64_TPREL16_HA;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- if (offset != (bfd_vma) -1)
- {
- rel[1].r_info = ELF64_R_INFO (r_symndx,
- R_PPC64_TPREL16_LO);
- rel[1].r_offset = offset + d_offset;
- rel[1].r_addend = rel->r_addend;
- }
- }
- bfd_put_32 (output_bfd, insn1,
- contents + rel->r_offset - d_offset);
- if (offset != (bfd_vma) -1)
- {
- insn3 = bfd_get_32 (output_bfd,
- contents + offset + 4);
- if (insn3 == NOP
- || insn3 == CROR_151515 || insn3 == CROR_313131)
- {
- rel[1].r_offset += 4;
- bfd_put_32 (output_bfd, insn2, contents + offset + 4);
- insn2 = NOP;
- }
- bfd_put_32 (output_bfd, insn2, contents + offset);
- }
- if ((tls_mask & tls_gd) == 0
- && (tls_gd == 0 || toc_symndx != 0))
- {
- /* We changed the symbol. Start over in order
- to get h, sym, sec etc. right. */
- rel--;
- continue;
- }
- }
- break;
-
- case R_PPC64_TLSGD:
- if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
- {
- unsigned int insn2, insn3;
- bfd_vma offset = rel->r_offset;
-
- if ((tls_mask & TLS_TPRELGD) != 0)
- {
- /* IE */
- r_type = R_PPC64_NONE;
- insn2 = 0x7c636a14; /* add 3,3,13 */
- }
- else
- {
- /* LE */
- if (toc_symndx != 0)
- {
- r_symndx = toc_symndx;
- rel->r_addend = toc_addend;
- }
- r_type = R_PPC64_TPREL16_LO;
- rel->r_offset = offset + d_offset;
- insn2 = 0x38630000; /* addi 3,3,0 */
- }
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- /* Zap the reloc on the _tls_get_addr call too. */
- BFD_ASSERT (offset == rel[1].r_offset);
- rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
- insn3 = bfd_get_32 (output_bfd,
- contents + offset + 4);
- if (insn3 == NOP
- || insn3 == CROR_151515 || insn3 == CROR_313131)
- {
- rel->r_offset += 4;
- bfd_put_32 (output_bfd, insn2, contents + offset + 4);
- insn2 = NOP;
- }
- bfd_put_32 (output_bfd, insn2, contents + offset);
- if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
- {
- rel--;
- continue;
- }
- }
- break;
-
- case R_PPC64_TLSLD:
- if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
- {
- unsigned int insn2, insn3;
- bfd_vma offset = rel->r_offset;
-
- if (toc_symndx)
- sec = local_sections[toc_symndx];
- for (r_symndx = 0;
- r_symndx < symtab_hdr->sh_info;
- r_symndx++)
- if (local_sections[r_symndx] == sec)
- break;
- if (r_symndx >= symtab_hdr->sh_info)
- r_symndx = STN_UNDEF;
- rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
- if (r_symndx != STN_UNDEF)
- rel->r_addend -= (local_syms[r_symndx].st_value
- + sec->output_offset
- + sec->output_section->vma);
-
- r_type = R_PPC64_TPREL16_LO;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- rel->r_offset = offset + d_offset;
- /* Zap the reloc on the _tls_get_addr call too. */
- BFD_ASSERT (offset == rel[1].r_offset);
- rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
- insn2 = 0x38630000; /* addi 3,3,0 */
- insn3 = bfd_get_32 (output_bfd,
- contents + offset + 4);
- if (insn3 == NOP
- || insn3 == CROR_151515 || insn3 == CROR_313131)
- {
- rel->r_offset += 4;
- bfd_put_32 (output_bfd, insn2, contents + offset + 4);
- insn2 = NOP;
- }
- bfd_put_32 (output_bfd, insn2, contents + offset);
- rel--;
- continue;
- }
- break;
-
- case R_PPC64_DTPMOD64:
- if (rel + 1 < relend
- && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
- && rel[1].r_offset == rel->r_offset + 8)
- {
- if ((tls_mask & TLS_GD) == 0)
- {
- rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
- if ((tls_mask & TLS_TPRELGD) != 0)
- r_type = R_PPC64_TPREL64;
- else
- {
- bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
- r_type = R_PPC64_NONE;
- }
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- }
- else
- {
- if ((tls_mask & TLS_LD) == 0)
- {
- bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
- r_type = R_PPC64_NONE;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- }
- break;
-
- case R_PPC64_TPREL64:
- if ((tls_mask & TLS_TPREL) == 0)
- {
- r_type = R_PPC64_NONE;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- }
- break;
-
- case R_PPC64_REL16_HA:
- /* If we are generating a non-PIC executable, edit
- . 0: addis 2,12,.TOC.-0b@ha
- . addi 2,2,.TOC.-0b@l
- used by ELFv2 global entry points to set up r2, to
- . lis 2,.TOC.@ha
- . addi 2,2,.TOC.@l
- if .TOC. is in range. */
- if (!info->shared
- && h != NULL && &h->elf == htab->elf.hgot
- && rel + 1 < relend
- && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
- && rel[1].r_offset == rel->r_offset + 4
- && rel[1].r_addend == rel->r_addend + 4
- && relocation + 0x80008000 <= 0xffffffff)
- {
- unsigned int insn1, insn2;
- bfd_vma offset = rel->r_offset - d_offset;
- insn1 = bfd_get_32 (output_bfd, contents + offset);
- insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
- if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
- && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
- {
- r_type = R_PPC64_ADDR16_HA;
- rel->r_info = ELF64_R_INFO (r_symndx, r_type);
- rel->r_addend -= d_offset;
- rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
- rel[1].r_addend -= d_offset + 4;
- bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
- }
- }
- break;
- }
-
- /* Handle other relocations that tweak non-addend part of insn. */
- insn = 0;
- max_br_offset = 1 << 25;
- addend = rel->r_addend;
- reloc_dest = DEST_NORMAL;
- switch (r_type)
- {
- default:
- break;
-
- case R_PPC64_TOCSAVE:
- if (relocation + addend == (rel->r_offset
- + input_section->output_offset
- + input_section->output_section->vma)
- && tocsave_find (htab, NO_INSERT,
- &local_syms, rel, input_bfd))
- {
- insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
- if (insn == NOP
- || insn == CROR_151515 || insn == CROR_313131)
- bfd_put_32 (input_bfd,
- STD_R2_0R1 + STK_TOC (htab),
- contents + rel->r_offset);
- }
- break;
-
- /* Branch taken prediction relocations. */
- case R_PPC64_ADDR14_BRTAKEN:
- case R_PPC64_REL14_BRTAKEN:
- insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
- /* Fall thru. */
-
- /* Branch not taken prediction relocations. */
- case R_PPC64_ADDR14_BRNTAKEN:
- case R_PPC64_REL14_BRNTAKEN:
- insn |= bfd_get_32 (output_bfd,
- contents + rel->r_offset) & ~(0x01 << 21);
- /* Fall thru. */
-
- case R_PPC64_REL14:
- max_br_offset = 1 << 15;
- /* Fall thru. */
-
- case R_PPC64_REL24:
- /* Calls to functions with a different TOC, such as calls to
- shared objects, need to alter the TOC pointer. This is
- done using a linkage stub. A REL24 branching to these
- linkage stubs needs to be followed by a nop, as the nop
- will be replaced with an instruction to restore the TOC
- base pointer. */
- fdh = h;
- if (h != NULL
- && h->oh != NULL
- && h->oh->is_func_descriptor)
- fdh = ppc_follow_link (h->oh);
- stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
- htab);
- if (stub_entry != NULL
- && (stub_entry->stub_type == ppc_stub_plt_call
- || stub_entry->stub_type == ppc_stub_plt_call_r2save
- || stub_entry->stub_type == ppc_stub_plt_branch_r2off
- || stub_entry->stub_type == ppc_stub_long_branch_r2off))
- {
- bfd_boolean can_plt_call = FALSE;
-
- /* All of these stubs will modify r2, so there must be a
- branch and link followed by a nop. The nop is
- replaced by an insn to restore r2. */
- if (rel->r_offset + 8 <= input_section->size)
- {
- unsigned long br;
-
- br = bfd_get_32 (input_bfd,
- contents + rel->r_offset);
- if ((br & 1) != 0)
- {
- unsigned long nop;
-
- nop = bfd_get_32 (input_bfd,
- contents + rel->r_offset + 4);
- if (nop == NOP
- || nop == CROR_151515 || nop == CROR_313131)
- {
- if (h != NULL
- && (h == htab->tls_get_addr_fd
- || h == htab->tls_get_addr)
- && !htab->no_tls_get_addr_opt)
- {
- /* Special stub used, leave nop alone. */
- }
- else
- bfd_put_32 (input_bfd,
- LD_R2_0R1 + STK_TOC (htab),
- contents + rel->r_offset + 4);
- can_plt_call = TRUE;
- }
- }
- }
-
- if (!can_plt_call && h != NULL)
- {
- const char *name = h->elf.root.root.string;
-
- if (*name == '.')
- ++name;
-
- if (strncmp (name, "__libc_start_main", 17) == 0
- && (name[17] == 0 || name[17] == '@'))
- {
- /* Allow crt1 branch to go via a toc adjusting
- stub. Other calls that never return could do
- the same, if we could detect such. */
- can_plt_call = TRUE;
- }
- }
-
- if (!can_plt_call)
- {
- /* g++ as of 20130507 emits self-calls without a
- following nop. This is arguably wrong since we
- have conflicting information. On the one hand a
- global symbol and on the other a local call
- sequence, but don't error for this special case.
- It isn't possible to cheaply verify we have
- exactly such a call. Allow all calls to the same
- section. */
- asection *code_sec = sec;
-
- if (get_opd_info (sec) != NULL)
- {
- bfd_vma off = (relocation + addend
- - sec->output_section->vma
- - sec->output_offset);
-
- opd_entry_value (sec, off, &code_sec, NULL, FALSE);
- }
- if (code_sec == input_section)
- can_plt_call = TRUE;
- }
-
- if (!can_plt_call)
- {
- info->callbacks->einfo
- (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
- "recompile with -fPIC"),
- input_bfd, input_section, rel->r_offset, sym_name);
-
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- }
-
- if (can_plt_call
- && (stub_entry->stub_type == ppc_stub_plt_call
- || stub_entry->stub_type == ppc_stub_plt_call_r2save))
- unresolved_reloc = FALSE;
- }
-
- if ((stub_entry == NULL
- || stub_entry->stub_type == ppc_stub_long_branch
- || stub_entry->stub_type == ppc_stub_plt_branch)
- && get_opd_info (sec) != NULL)
- {
- /* The branch destination is the value of the opd entry. */
- bfd_vma off = (relocation + addend
- - sec->output_section->vma
- - sec->output_offset);
- bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
- if (dest != (bfd_vma) -1)
- {
- relocation = dest;
- addend = 0;
- reloc_dest = DEST_OPD;
- }
- }
-
- /* If the branch is out of reach we ought to have a long
- branch stub. */
- from = (rel->r_offset
- + input_section->output_offset
- + input_section->output_section->vma);
-
- relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
- ? fdh->elf.other
- : sym->st_other);
-
- if (stub_entry != NULL
- && (stub_entry->stub_type == ppc_stub_long_branch
- || stub_entry->stub_type == ppc_stub_plt_branch)
- && (r_type == R_PPC64_ADDR14_BRTAKEN
- || r_type == R_PPC64_ADDR14_BRNTAKEN
- || (relocation + addend - from + max_br_offset
- < 2 * max_br_offset)))
- /* Don't use the stub if this branch is in range. */
- stub_entry = NULL;
-
- if (stub_entry != NULL)
- {
- /* Munge up the value and addend so that we call the stub
- rather than the procedure directly. */
- relocation = (stub_entry->stub_offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma);
- addend = 0;
- reloc_dest = DEST_STUB;
-
- if ((stub_entry->stub_type == ppc_stub_plt_call
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- && (ALWAYS_EMIT_R2SAVE
- || stub_entry->stub_type == ppc_stub_plt_call_r2save)
- && rel + 1 < relend
- && rel[1].r_offset == rel->r_offset + 4
- && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
- relocation += 4;
- }
-
- if (insn != 0)
- {
- if (is_isa_v2)
- {
- /* Set 'a' bit. This is 0b00010 in BO field for branch
- on CR(BI) insns (BO == 001at or 011at), and 0b01000
- for branch on CTR insns (BO == 1a00t or 1a01t). */
- if ((insn & (0x14 << 21)) == (0x04 << 21))
- insn |= 0x02 << 21;
- else if ((insn & (0x14 << 21)) == (0x10 << 21))
- insn |= 0x08 << 21;
- else
- break;
- }
- else
- {
- /* Invert 'y' bit if not the default. */
- if ((bfd_signed_vma) (relocation + addend - from) < 0)
- insn ^= 0x01 << 21;
- }
-
- bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
- }
-
- /* NOP out calls to undefined weak functions.
- We can thus call a weak function without first
- checking whether the function is defined. */
- else if (h != NULL
- && h->elf.root.type == bfd_link_hash_undefweak
- && h->elf.dynindx == -1
- && r_type == R_PPC64_REL24
- && relocation == 0
- && addend == 0)
- {
- bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
- continue;
- }
- break;
- }
-
- /* Set `addend'. */
- tls_type = 0;
- switch (r_type)
- {
- default:
- info->callbacks->einfo
- (_("%P: %B: unknown relocation type %d for `%T'\n"),
- input_bfd, (int) r_type, sym_name);
-
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
-
- case R_PPC64_NONE:
- case R_PPC64_TLS:
- case R_PPC64_TLSGD:
- case R_PPC64_TLSLD:
- case R_PPC64_TOCSAVE:
- case R_PPC64_GNU_VTINHERIT:
- case R_PPC64_GNU_VTENTRY:
- continue;
-
- /* GOT16 relocations. Like an ADDR16 using the symbol's
- address in the GOT as relocation value instead of the
- symbol's value itself. Also, create a GOT entry for the
- symbol and put the symbol value there. */
- case R_PPC64_GOT_TLSGD16:
- case R_PPC64_GOT_TLSGD16_LO:
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TLSGD16_HA:
- tls_type = TLS_TLS | TLS_GD;
- goto dogot;
-
- case R_PPC64_GOT_TLSLD16:
- case R_PPC64_GOT_TLSLD16_LO:
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSLD16_HA:
- tls_type = TLS_TLS | TLS_LD;
- goto dogot;
-
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_TPREL16_HA:
- tls_type = TLS_TLS | TLS_TPREL;
- goto dogot;
-
- case R_PPC64_GOT_DTPREL16_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_HI:
- case R_PPC64_GOT_DTPREL16_HA:
- tls_type = TLS_TLS | TLS_DTPREL;
- goto dogot;
-
- case R_PPC64_GOT16:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_HI:
- case R_PPC64_GOT16_HA:
- case R_PPC64_GOT16_DS:
- case R_PPC64_GOT16_LO_DS:
- dogot:
- {
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- asection *got;
- bfd_vma *offp;
- bfd_vma off;
- unsigned long indx = 0;
- struct got_entry *ent;
-
- if (tls_type == (TLS_TLS | TLS_LD)
- && (h == NULL
- || !h->elf.def_dynamic))
- ent = ppc64_tlsld_got (input_bfd);
- else
- {
-
- if (h != NULL)
- {
- bfd_boolean dyn = htab->elf.dynamic_sections_created;
- if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
- &h->elf)
- || (info->shared
- && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally, or the symbol was forced to be local
- because of a version file. */
- ;
- else
- {
- BFD_ASSERT (h->elf.dynindx != -1);
- indx = h->elf.dynindx;
- unresolved_reloc = FALSE;
- }
- ent = h->elf.got.glist;
- }
- else
- {
- if (local_got_ents == NULL)
- abort ();
- ent = local_got_ents[r_symndx];
- }
-
- for (; ent != NULL; ent = ent->next)
- if (ent->addend == orig_rel.r_addend
- && ent->owner == input_bfd
- && ent->tls_type == tls_type)
- break;
- }
-
- if (ent == NULL)
- abort ();
- if (ent->is_indirect)
- ent = ent->got.ent;
- offp = &ent->got.offset;
- got = ppc64_elf_tdata (ent->owner)->got;
- if (got == NULL)
- abort ();
-
- /* The offset must always be a multiple of 8. We use the
- least significant bit to record whether we have already
- processed this entry. */
- off = *offp;
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- /* Generate relocs for the dynamic linker, except in
- the case of TLSLD where we'll use one entry per
- module. */
- asection *relgot;
- bfd_boolean ifunc;
-
- *offp = off | 1;
- relgot = NULL;
- ifunc = (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
- if (ifunc)
- relgot = htab->elf.irelplt;
- else if ((info->shared || indx != 0)
- && (h == NULL
- || (tls_type == (TLS_TLS | TLS_LD)
- && !h->elf.def_dynamic)
- || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
- || h->elf.root.type != bfd_link_hash_undefweak))
- relgot = ppc64_elf_tdata (ent->owner)->relgot;
- if (relgot != NULL)
- {
- outrel.r_offset = (got->output_section->vma
- + got->output_offset
- + off);
- outrel.r_addend = addend;
- if (tls_type & (TLS_LD | TLS_GD))
- {
- outrel.r_addend = 0;
- outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
- if (tls_type == (TLS_TLS | TLS_GD))
- {
- loc = relgot->contents;
- loc += (relgot->reloc_count++
- * sizeof (Elf64_External_Rela));
- bfd_elf64_swap_reloca_out (output_bfd,
- &outrel, loc);
- outrel.r_offset += 8;
- outrel.r_addend = addend;
- outrel.r_info
- = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
- }
- }
- else if (tls_type == (TLS_TLS | TLS_DTPREL))
- outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
- else if (tls_type == (TLS_TLS | TLS_TPREL))
- outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
- else if (indx != 0)
- outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
- else
- {
- if (ifunc)
- outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
- else
- outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
-
- /* Write the .got section contents for the sake
- of prelink. */
- loc = got->contents + off;
- bfd_put_64 (output_bfd, outrel.r_addend + relocation,
- loc);
- }
-
- if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
- {
- outrel.r_addend += relocation;
- if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
- outrel.r_addend -= htab->elf.tls_sec->vma;
- }
- loc = relgot->contents;
- loc += (relgot->reloc_count++
- * sizeof (Elf64_External_Rela));
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- }
-
- /* Init the .got section contents here if we're not
- emitting a reloc. */
- else
- {
- relocation += addend;
- if (tls_type == (TLS_TLS | TLS_LD))
- relocation = 1;
- else if (tls_type != 0)
- {
- relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
- if (tls_type == (TLS_TLS | TLS_TPREL))
- relocation += DTP_OFFSET - TP_OFFSET;
-
- if (tls_type == (TLS_TLS | TLS_GD))
- {
- bfd_put_64 (output_bfd, relocation,
- got->contents + off + 8);
- relocation = 1;
- }
- }
-
- bfd_put_64 (output_bfd, relocation,
- got->contents + off);
- }
- }
-
- if (off >= (bfd_vma) -2)
- abort ();
-
- relocation = got->output_section->vma + got->output_offset + off;
- addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
- }
- break;
-
- case R_PPC64_PLT16_HA:
- case R_PPC64_PLT16_HI:
- case R_PPC64_PLT16_LO:
- case R_PPC64_PLT32:
- case R_PPC64_PLT64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
-
- /* Resolve a PLT reloc against a local symbol directly,
- without using the procedure linkage table. */
- if (h == NULL)
- break;
-
- /* It's possible that we didn't make a PLT entry for this
- symbol. This happens when statically linking PIC code,
- or when using -Bsymbolic. Go find a match if there is a
- PLT entry. */
- if (htab->elf.splt != NULL)
- {
- struct plt_entry *ent;
- for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.offset != (bfd_vma) -1
- && ent->addend == orig_rel.r_addend)
- {
- relocation = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + ent->plt.offset);
- unresolved_reloc = FALSE;
- break;
- }
- }
- break;
-
- case R_PPC64_TOC:
- /* Relocation value is TOC base. */
- relocation = TOCstart;
- if (r_symndx == STN_UNDEF)
- relocation += htab->stub_group[input_section->id].toc_off;
- else if (unresolved_reloc)
- ;
- else if (sec != NULL && sec->id <= htab->top_id)
- relocation += htab->stub_group[sec->id].toc_off;
- else
- unresolved_reloc = TRUE;
- goto dodyn;
-
- /* TOC16 relocs. We want the offset relative to the TOC base,
- which is the address of the start of the TOC plus 0x8000.
- The TOC consists of sections .got, .toc, .tocbss, and .plt,
- in this order. */
- case R_PPC64_TOC16:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_HI:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- case R_PPC64_TOC16_HA:
- addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
- break;
-
- /* Relocate against the beginning of the section. */
- case R_PPC64_SECTOFF:
- case R_PPC64_SECTOFF_LO:
- case R_PPC64_SECTOFF_HI:
- case R_PPC64_SECTOFF_DS:
- case R_PPC64_SECTOFF_LO_DS:
- case R_PPC64_SECTOFF_HA:
- if (sec != NULL)
- addend -= sec->output_section->vma;
- break;
-
- case R_PPC64_REL16:
- case R_PPC64_REL16_LO:
- case R_PPC64_REL16_HI:
- case R_PPC64_REL16_HA:
- break;
-
- case R_PPC64_REL14:
- case R_PPC64_REL14_BRNTAKEN:
- case R_PPC64_REL14_BRTAKEN:
- case R_PPC64_REL24:
- break;
-
- case R_PPC64_TPREL16:
- case R_PPC64_TPREL16_LO:
- case R_PPC64_TPREL16_HI:
- case R_PPC64_TPREL16_HA:
- case R_PPC64_TPREL16_DS:
- case R_PPC64_TPREL16_LO_DS:
- case R_PPC64_TPREL16_HIGH:
- case R_PPC64_TPREL16_HIGHA:
- case R_PPC64_TPREL16_HIGHER:
- case R_PPC64_TPREL16_HIGHERA:
- case R_PPC64_TPREL16_HIGHEST:
- case R_PPC64_TPREL16_HIGHESTA:
- if (h != NULL
- && h->elf.root.type == bfd_link_hash_undefweak
- && h->elf.dynindx == -1)
- {
- /* Make this relocation against an undefined weak symbol
- resolve to zero. This is really just a tweak, since
- code using weak externs ought to check that they are
- defined before using them. */
- bfd_byte *p = contents + rel->r_offset - d_offset;
-
- insn = bfd_get_32 (output_bfd, p);
- insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
- if (insn != 0)
- bfd_put_32 (output_bfd, insn, p);
- break;
- }
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
- if (info->shared)
- /* The TPREL16 relocs shouldn't really be used in shared
- libs as they will result in DT_TEXTREL being set, but
- support them anyway. */
- goto dodyn;
- break;
-
- case R_PPC64_DTPREL16:
- case R_PPC64_DTPREL16_LO:
- case R_PPC64_DTPREL16_HI:
- case R_PPC64_DTPREL16_HA:
- case R_PPC64_DTPREL16_DS:
- case R_PPC64_DTPREL16_LO_DS:
- case R_PPC64_DTPREL16_HIGH:
- case R_PPC64_DTPREL16_HIGHA:
- case R_PPC64_DTPREL16_HIGHER:
- case R_PPC64_DTPREL16_HIGHERA:
- case R_PPC64_DTPREL16_HIGHEST:
- case R_PPC64_DTPREL16_HIGHESTA:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
- break;
-
- case R_PPC64_DTPMOD64:
- relocation = 1;
- addend = 0;
- goto dodyn;
-
- case R_PPC64_TPREL64:
- addend -= htab->elf.tls_sec->vma + TP_OFFSET;
- goto dodyn;
-
- case R_PPC64_DTPREL64:
- addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
- /* Fall thru */
-
- /* Relocations that may need to be propagated if this is a
- dynamic object. */
- case R_PPC64_REL30:
- case R_PPC64_REL32:
- case R_PPC64_REL64:
- case R_PPC64_ADDR14:
- case R_PPC64_ADDR14_BRNTAKEN:
- case R_PPC64_ADDR14_BRTAKEN:
- case R_PPC64_ADDR16:
- case R_PPC64_ADDR16_DS:
- case R_PPC64_ADDR16_HA:
- case R_PPC64_ADDR16_HI:
- case R_PPC64_ADDR16_HIGH:
- case R_PPC64_ADDR16_HIGHA:
- case R_PPC64_ADDR16_HIGHER:
- case R_PPC64_ADDR16_HIGHERA:
- case R_PPC64_ADDR16_HIGHEST:
- case R_PPC64_ADDR16_HIGHESTA:
- case R_PPC64_ADDR16_LO:
- case R_PPC64_ADDR16_LO_DS:
- case R_PPC64_ADDR24:
- case R_PPC64_ADDR32:
- case R_PPC64_ADDR64:
- case R_PPC64_UADDR16:
- case R_PPC64_UADDR32:
- case R_PPC64_UADDR64:
- dodyn:
- if ((input_section->flags & SEC_ALLOC) == 0)
- break;
-
- if (NO_OPD_RELOCS && is_opd)
- break;
-
- if ((info->shared
- && (h == NULL
- || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
- || h->elf.root.type != bfd_link_hash_undefweak)
- && (must_be_dyn_reloc (info, r_type)
- || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
- || (ELIMINATE_COPY_RELOCS
- && !info->shared
- && h != NULL
- && h->elf.dynindx != -1
- && !h->elf.non_got_ref
- && !h->elf.def_regular)
- || (!info->shared
- && (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
- {
- bfd_boolean skip, relocate;
- asection *sreloc;
- bfd_vma out_off;
-
- /* When generating a dynamic object, these relocations
- are copied into the output file to be resolved at run
- time. */
-
- skip = FALSE;
- relocate = FALSE;
-
- out_off = _bfd_elf_section_offset (output_bfd, info,
- input_section, rel->r_offset);
- if (out_off == (bfd_vma) -1)
- skip = TRUE;
- else if (out_off == (bfd_vma) -2)
- skip = TRUE, relocate = TRUE;
- out_off += (input_section->output_section->vma
- + input_section->output_offset);
- outrel.r_offset = out_off;
- outrel.r_addend = rel->r_addend;
-
- /* Optimize unaligned reloc use. */
- if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
- || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
- r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
- else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
- || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
- r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
- else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
- || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
- r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
-
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
- && !is_opd
- && r_type != R_PPC64_TOC)
- {
- BFD_ASSERT (h->elf.dynindx != -1);
- outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
- }
- else
- {
- /* This symbol is local, or marked to become local,
- or this is an opd section reloc which must point
- at a local function. */
- outrel.r_addend += relocation;
- if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
- {
- if (is_opd && h != NULL)
- {
- /* Lie about opd entries. This case occurs
- when building shared libraries and we
- reference a function in another shared
- lib. The same thing happens for a weak
- definition in an application that's
- overridden by a strong definition in a
- shared lib. (I believe this is a generic
- bug in binutils handling of weak syms.)
- In these cases we won't use the opd
- entry in this lib. */
- unresolved_reloc = FALSE;
- }
- if (!is_opd
- && r_type == R_PPC64_ADDR64
- && (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
- outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
- else
- {
- outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
-
- /* We need to relocate .opd contents for ld.so.
- Prelink also wants simple and consistent rules
- for relocs. This make all RELATIVE relocs have
- *r_offset equal to r_addend. */
- relocate = TRUE;
- }
- }
- else
- {
- long indx = 0;
-
- if (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- {
- info->callbacks->einfo
- (_("%P: %H: %s for indirect "
- "function `%T' unsupported\n"),
- input_bfd, input_section, rel->r_offset,
- ppc64_elf_howto_table[r_type]->name,
- sym_name);
- ret = FALSE;
- }
- else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
- ;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- asection *osec;
-
- osec = sec->output_section;
- indx = elf_section_data (osec)->dynindx;
-
- if (indx == 0)
- {
- if ((osec->flags & SEC_READONLY) == 0
- && htab->elf.data_index_section != NULL)
- osec = htab->elf.data_index_section;
- else
- osec = htab->elf.text_index_section;
- indx = elf_section_data (osec)->dynindx;
- }
- BFD_ASSERT (indx != 0);
-
- /* We are turning this relocation into one
- against a section symbol, so subtract out
- the output section's address but not the
- offset of the input section in the output
- section. */
- outrel.r_addend -= osec->vma;
- }
-
- outrel.r_info = ELF64_R_INFO (indx, r_type);
- }
- }
-
- sreloc = elf_section_data (input_section)->sreloc;
- if (h != NULL
- ? h->elf.type == STT_GNU_IFUNC
- : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- sreloc = htab->elf.irelplt;
- if (sreloc == NULL)
- abort ();
-
- if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
- >= sreloc->size)
- abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
-
- /* If this reloc is against an external symbol, it will
- be computed at runtime, so there's no need to do
- anything now. However, for the sake of prelink ensure
- that the section contents are a known value. */
- if (! relocate)
- {
- unresolved_reloc = FALSE;
- /* The value chosen here is quite arbitrary as ld.so
- ignores section contents except for the special
- case of .opd where the contents might be accessed
- before relocation. Choose zero, as that won't
- cause reloc overflow. */
- relocation = 0;
- addend = 0;
- /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
- to improve backward compatibility with older
- versions of ld. */
- if (r_type == R_PPC64_ADDR64)
- addend = outrel.r_addend;
- /* Adjust pc_relative relocs to have zero in *r_offset. */
- else if (ppc64_elf_howto_table[r_type]->pc_relative)
- addend = (input_section->output_section->vma
- + input_section->output_offset
- + rel->r_offset);
- }
- }
- break;
-
- case R_PPC64_COPY:
- case R_PPC64_GLOB_DAT:
- case R_PPC64_JMP_SLOT:
- case R_PPC64_JMP_IREL:
- case R_PPC64_RELATIVE:
- /* We shouldn't ever see these dynamic relocs in relocatable
- files. */
- /* Fall through. */
-
- case R_PPC64_PLTGOT16:
- case R_PPC64_PLTGOT16_DS:
- case R_PPC64_PLTGOT16_HA:
- case R_PPC64_PLTGOT16_HI:
- case R_PPC64_PLTGOT16_LO:
- case R_PPC64_PLTGOT16_LO_DS:
- case R_PPC64_PLTREL32:
- case R_PPC64_PLTREL64:
- /* These ones haven't been implemented yet. */
-
- info->callbacks->einfo
- (_("%P: %B: %s is not supported for `%T'\n"),
- input_bfd,
- ppc64_elf_howto_table[r_type]->name, sym_name);
-
- bfd_set_error (bfd_error_invalid_operation);
- ret = FALSE;
- continue;
- }
-
- /* Multi-instruction sequences that access the TOC can be
- optimized, eg. addis ra,r2,0; addi rb,ra,x;
- to nop; addi rb,r2,x; */
- switch (r_type)
- {
- default:
- break;
-
- case R_PPC64_GOT_TLSLD16_HI:
- case R_PPC64_GOT_TLSGD16_HI:
- case R_PPC64_GOT_TPREL16_HI:
- case R_PPC64_GOT_DTPREL16_HI:
- case R_PPC64_GOT16_HI:
- case R_PPC64_TOC16_HI:
- /* These relocs would only be useful if building up an
- offset to later add to r2, perhaps in an indexed
- addressing mode instruction. Don't try to optimize.
- Unfortunately, the possibility of someone building up an
- offset like this or even with the HA relocs, means that
- we need to check the high insn when optimizing the low
- insn. */
- break;
-
- case R_PPC64_GOT_TLSLD16_HA:
- case R_PPC64_GOT_TLSGD16_HA:
- case R_PPC64_GOT_TPREL16_HA:
- case R_PPC64_GOT_DTPREL16_HA:
- case R_PPC64_GOT16_HA:
- case R_PPC64_TOC16_HA:
- if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
- && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
- {
- bfd_byte *p = contents + (rel->r_offset & ~3);
- bfd_put_32 (input_bfd, NOP, p);
- }
- break;
-
- case R_PPC64_GOT_TLSLD16_LO:
- case R_PPC64_GOT_TLSGD16_LO:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_GOT16_LO:
- case R_PPC64_GOT16_LO_DS:
- case R_PPC64_TOC16_LO:
- case R_PPC64_TOC16_LO_DS:
- if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
- && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
- {
- bfd_byte *p = contents + (rel->r_offset & ~3);
- insn = bfd_get_32 (input_bfd, p);
- if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
- {
- /* Transform addic to addi when we change reg. */
- insn &= ~((0x3f << 26) | (0x1f << 16));
- insn |= (14u << 26) | (2 << 16);
- }
- else
- {
- insn &= ~(0x1f << 16);
- insn |= 2 << 16;
- }
- bfd_put_32 (input_bfd, insn, p);
- }
- break;
- }
-
- /* Do any further special processing. */
- switch (r_type)
- {
- default:
- break;
-
- case R_PPC64_REL16_HA:
- case R_PPC64_ADDR16_HA:
- case R_PPC64_ADDR16_HIGHA:
- case R_PPC64_ADDR16_HIGHERA:
- case R_PPC64_ADDR16_HIGHESTA:
- case R_PPC64_TOC16_HA:
- case R_PPC64_SECTOFF_HA:
- case R_PPC64_TPREL16_HA:
- case R_PPC64_TPREL16_HIGHA:
- case R_PPC64_TPREL16_HIGHERA:
- case R_PPC64_TPREL16_HIGHESTA:
- case R_PPC64_DTPREL16_HA:
- case R_PPC64_DTPREL16_HIGHA:
- case R_PPC64_DTPREL16_HIGHERA:
- case R_PPC64_DTPREL16_HIGHESTA:
- /* It's just possible that this symbol is a weak symbol
- that's not actually defined anywhere. In that case,
- 'sec' would be NULL, and we should leave the symbol
- alone (it will be set to zero elsewhere in the link). */
- if (sec == NULL)
- break;
- /* Fall thru */
-
- case R_PPC64_GOT16_HA:
- case R_PPC64_PLTGOT16_HA:
- case R_PPC64_PLT16_HA:
- case R_PPC64_GOT_TLSGD16_HA:
- case R_PPC64_GOT_TLSLD16_HA:
- case R_PPC64_GOT_TPREL16_HA:
- case R_PPC64_GOT_DTPREL16_HA:
- /* Add 0x10000 if sign bit in 0:15 is set.
- Bits 0:15 are not used. */
- addend += 0x8000;
- break;
-
- case R_PPC64_ADDR16_DS:
- case R_PPC64_ADDR16_LO_DS:
- case R_PPC64_GOT16_DS:
- case R_PPC64_GOT16_LO_DS:
- case R_PPC64_PLT16_LO_DS:
- case R_PPC64_SECTOFF_DS:
- case R_PPC64_SECTOFF_LO_DS:
- case R_PPC64_TOC16_DS:
- case R_PPC64_TOC16_LO_DS:
- case R_PPC64_PLTGOT16_DS:
- case R_PPC64_PLTGOT16_LO_DS:
- case R_PPC64_GOT_TPREL16_DS:
- case R_PPC64_GOT_TPREL16_LO_DS:
- case R_PPC64_GOT_DTPREL16_DS:
- case R_PPC64_GOT_DTPREL16_LO_DS:
- case R_PPC64_TPREL16_DS:
- case R_PPC64_TPREL16_LO_DS:
- case R_PPC64_DTPREL16_DS:
- case R_PPC64_DTPREL16_LO_DS:
- insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
- mask = 3;
- /* If this reloc is against an lq insn, then the value must be
- a multiple of 16. This is somewhat of a hack, but the
- "correct" way to do this by defining _DQ forms of all the
- _DS relocs bloats all reloc switches in this file. It
- doesn't seem to make much sense to use any of these relocs
- in data, so testing the insn should be safe. */
- if ((insn & (0x3f << 26)) == (56u << 26))
- mask = 15;
- if (((relocation + addend) & mask) != 0)
- {
- info->callbacks->einfo
- (_("%P: %H: error: %s not a multiple of %u\n"),
- input_bfd, input_section, rel->r_offset,
- ppc64_elf_howto_table[r_type]->name,
- mask + 1);
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
- }
- break;
- }
-
- /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
- because such sections are not SEC_ALLOC and thus ld.so will
- not process them. */
- if (unresolved_reloc
- && !((input_section->flags & SEC_DEBUGGING) != 0
- && h->elf.def_dynamic)
- && _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset) != (bfd_vma) -1)
- {
- info->callbacks->einfo
- (_("%P: %H: unresolvable %s against `%T'\n"),
- input_bfd, input_section, rel->r_offset,
- ppc64_elf_howto_table[(int) r_type]->name,
- h->elf.root.root.string);
- ret = FALSE;
- }
-
- r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
- input_bfd,
- input_section,
- contents,
- rel->r_offset,
- relocation,
- addend);
-
- if (r != bfd_reloc_ok)
- {
- char *more_info = NULL;
- const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
-
- if (reloc_dest != DEST_NORMAL)
- {
- more_info = bfd_malloc (strlen (reloc_name) + 8);
- if (more_info != NULL)
- {
- strcpy (more_info, reloc_name);
- strcat (more_info, (reloc_dest == DEST_OPD
- ? " (OPD)" : " (stub)"));
- reloc_name = more_info;
- }
- }
-
- if (r == bfd_reloc_overflow)
- {
- if (warned)
- continue;
- if (h != NULL
- && h->elf.root.type == bfd_link_hash_undefweak
- && ppc64_elf_howto_table[r_type]->pc_relative)
- {
- /* Assume this is a call protected by other code that
- detects the symbol is undefined. If this is the case,
- we can safely ignore the overflow. If not, the
- program is hosed anyway, and a little warning isn't
- going to help. */
-
- continue;
- }
-
- if (!((*info->callbacks->reloc_overflow)
- (info, &h->elf.root, sym_name,
- reloc_name, orig_rel.r_addend,
- input_bfd, input_section, rel->r_offset)))
- return FALSE;
- }
- else
- {
- info->callbacks->einfo
- (_("%P: %H: %s against `%T': error %d\n"),
- input_bfd, input_section, rel->r_offset,
- reloc_name, sym_name, (int) r);
- ret = FALSE;
- }
- if (more_info != NULL)
- free (more_info);
- }
- }
-
- /* If we're emitting relocations, then shortly after this function
- returns, reloc offsets and addends for this section will be
- adjusted. Worse, reloc symbol indices will be for the output
- file rather than the input. Save a copy of the relocs for
- opd_entry_value. */
- if (is_opd && (info->emitrelocations || info->relocatable))
- {
- bfd_size_type amt;
- amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
- rel = bfd_alloc (input_bfd, amt);
- BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
- ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
- if (rel == NULL)
- return FALSE;
- memcpy (rel, relocs, amt);
- }
- return ret;
-}
-
-/* Adjust the value of any local symbols in opd sections. */
-
-static int
-ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
- const char *name ATTRIBUTE_UNUSED,
- Elf_Internal_Sym *elfsym,
- asection *input_sec,
- struct elf_link_hash_entry *h)
-{
- struct _opd_sec_data *opd;
- long adjust;
- bfd_vma value;
-
- if (h != NULL)
- return 1;
-
- opd = get_opd_info (input_sec);
- if (opd == NULL || opd->adjust == NULL)
- return 1;
-
- value = elfsym->st_value - input_sec->output_offset;
- if (!info->relocatable)
- value -= input_sec->output_section->vma;
-
- adjust = opd->adjust[value / 8];
- if (adjust == -1)
- return 2;
-
- elfsym->st_value += adjust;
- return 1;
-}
-
-/* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
-
-static bfd_boolean
-ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
-{
- struct ppc_link_hash_table *htab;
- struct plt_entry *ent;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- for (ent = h->plt.plist; ent != NULL; ent = ent->next)
- if (ent->plt.offset != (bfd_vma) -1)
- {
- /* This symbol has an entry in the procedure linkage
- table. Set it up. */
- if (!htab->elf.dynamic_sections_created
- || h->dynindx == -1)
- {
- BFD_ASSERT (h->type == STT_GNU_IFUNC
- && h->def_regular
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak));
- rela.r_offset = (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + ent->plt.offset);
- if (htab->opd_abi)
- rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
- else
- rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_offset
- + h->root.u.def.section->output_section->vma
- + ent->addend);
- loc = (htab->elf.irelplt->contents
- + (htab->elf.irelplt->reloc_count++
- * sizeof (Elf64_External_Rela)));
- }
- else
- {
- rela.r_offset = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + ent->plt.offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
- rela.r_addend = ent->addend;
- loc = (htab->elf.srelplt->contents
- + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
- / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
- }
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
-
- if (!htab->opd_abi)
- {
- if (!h->def_regular)
- {
- /* Mark the symbol as undefined, rather than as
- defined in glink. Leave the value if there were
- any relocations where pointer equality matters
- (this is a clue for the dynamic linker, to make
- function pointer comparisons work between an
- application and shared library), otherwise set it
- to zero. */
- sym->st_shndx = SHN_UNDEF;
- if (!h->pointer_equality_needed)
- sym->st_value = 0;
- else if (!h->ref_regular_nonweak)
- {
- /* This breaks function pointer comparisons, but
- that is better than breaking tests for a NULL
- function pointer. */
- sym->st_value = 0;
- }
- }
- }
- }
-
- if (h->needs_copy)
- {
- /* This symbol needs a copy reloc. Set it up. */
-
- if (h->dynindx == -1
- || (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- || htab->relbss == NULL)
- abort ();
-
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
- rela.r_addend = 0;
- loc = htab->relbss->contents;
- loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- }
-
- return TRUE;
-}
-
-/* Used to decide how to sort relocs in an optimal manner for the
- dynamic linker, before writing them out. */
-
-static enum elf_reloc_type_class
-ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
- const asection *rel_sec,
- const Elf_Internal_Rela *rela)
-{
- enum elf_ppc64_reloc_type r_type;
- struct ppc_link_hash_table *htab = ppc_hash_table (info);
-
- if (rel_sec == htab->elf.irelplt)
- return reloc_class_ifunc;
-
- r_type = ELF64_R_TYPE (rela->r_info);
- switch (r_type)
- {
- case R_PPC64_RELATIVE:
- return reloc_class_relative;
- case R_PPC64_JMP_SLOT:
- return reloc_class_plt;
- case R_PPC64_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
-}
-
-/* Finish up the dynamic sections. */
-
-static bfd_boolean
-ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
-{
- struct ppc_link_hash_table *htab;
- bfd *dynobj;
- asection *sdyn;
-
- htab = ppc_hash_table (info);
- if (htab == NULL)
- return FALSE;
-
- dynobj = htab->elf.dynobj;
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
-
- if (htab->elf.dynamic_sections_created)
- {
- Elf64_External_Dyn *dyncon, *dynconend;
-
- if (sdyn == NULL || htab->elf.sgot == NULL)
- abort ();
-
- dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- asection *s;
-
- bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
-
- switch (dyn.d_tag)
- {
- default:
- continue;
-
- case DT_PPC64_GLINK:
- s = htab->glink;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- /* We stupidly defined DT_PPC64_GLINK to be the start
- of glink rather than the first entry point, which is
- what ld.so needs, and now have a bigger stub to
- support automatic multiple TOCs. */
- dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
- break;
-
- case DT_PPC64_OPD:
- s = bfd_get_section_by_name (output_bfd, ".opd");
- if (s == NULL)
- continue;
- dyn.d_un.d_ptr = s->vma;
- break;
-
- case DT_PPC64_OPT:
- if (htab->do_multi_toc && htab->multi_toc_needed)
- dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
- break;
-
- case DT_PPC64_OPDSZ:
- s = bfd_get_section_by_name (output_bfd, ".opd");
- if (s == NULL)
- continue;
- dyn.d_un.d_val = s->size;
- break;
-
- case DT_PLTGOT:
- s = htab->elf.splt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
-
- case DT_JMPREL:
- s = htab->elf.srelplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
-
- case DT_PLTRELSZ:
- dyn.d_un.d_val = htab->elf.srelplt->size;
- break;
-
- case DT_RELASZ:
- /* Don't count procedure linkage table relocs in the
- overall reloc count. */
- s = htab->elf.srelplt;
- if (s == NULL)
- continue;
- dyn.d_un.d_val -= s->size;
- break;
-
- case DT_RELA:
- /* We may not be using the standard ELF linker script.
- If .rela.plt is the first .rela section, we adjust
- DT_RELA to not include it. */
- s = htab->elf.srelplt;
- if (s == NULL)
- continue;
- if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
- continue;
- dyn.d_un.d_ptr += s->size;
- break;
- }
-
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- }
-
- if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
- {
- /* Fill in the first entry in the global offset table.
- We use it to hold the link-time TOCbase. */
- bfd_put_64 (output_bfd,
- elf_gp (output_bfd) + TOC_BASE_OFF,
- htab->elf.sgot->contents);
-
- /* Set .got entry size. */
- elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
- }
-
- if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
- {
- /* Set .plt entry size. */
- elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
- = PLT_ENTRY_SIZE (htab);
- }
-
- /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
- brlt ourselves if emitrelocations. */
- if (htab->brlt != NULL
- && htab->brlt->reloc_count != 0
- && !_bfd_elf_link_output_relocs (output_bfd,
- htab->brlt,
- elf_section_data (htab->brlt)->rela.hdr,
- elf_section_data (htab->brlt)->relocs,
- NULL))
- return FALSE;
-
- if (htab->glink != NULL
- && htab->glink->reloc_count != 0
- && !_bfd_elf_link_output_relocs (output_bfd,
- htab->glink,
- elf_section_data (htab->glink)->rela.hdr,
- elf_section_data (htab->glink)->relocs,
- NULL))
- return FALSE;
-
-
- if (htab->glink_eh_frame != NULL
- && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
- && !_bfd_elf_write_section_eh_frame (output_bfd, info,
- htab->glink_eh_frame,
- htab->glink_eh_frame->contents))
- return FALSE;
-
- /* We need to handle writing out multiple GOT sections ourselves,
- since we didn't add them to DYNOBJ. We know dynobj is the first
- bfd. */
- while ((dynobj = dynobj->link_next) != NULL)
- {
- asection *s;
-
- if (!is_ppc64_elf (dynobj))
- continue;
-
- s = ppc64_elf_tdata (dynobj)->got;
- if (s != NULL
- && s->size != 0
- && s->output_section != bfd_abs_section_ptr
- && !bfd_set_section_contents (output_bfd, s->output_section,
- s->contents, s->output_offset,
- s->size))
- return FALSE;
- s = ppc64_elf_tdata (dynobj)->relgot;
- if (s != NULL
- && s->size != 0
- && s->output_section != bfd_abs_section_ptr
- && !bfd_set_section_contents (output_bfd, s->output_section,
- s->contents, s->output_offset,
- s->size))
- return FALSE;
- }
-
- return TRUE;
-}
-
-#include "elf64-target.h"
-
-/* FreeBSD support */
-
-#undef TARGET_LITTLE_SYM
-#undef TARGET_LITTLE_NAME
-
-#undef TARGET_BIG_SYM
-#define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
-#undef TARGET_BIG_NAME
-#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
-
-#undef ELF_OSABI
-#define ELF_OSABI ELFOSABI_FREEBSD
-
-#undef elf64_bed
-#define elf64_bed elf64_powerpc_fbsd_bed
-
-#include "elf64-target.h"
-