diff options
Diffstat (limited to 'binutils-2.17/bfd/elf32-arm.c')
| -rw-r--r-- | binutils-2.17/bfd/elf32-arm.c | 8359 |
1 files changed, 0 insertions, 8359 deletions
diff --git a/binutils-2.17/bfd/elf32-arm.c b/binutils-2.17/bfd/elf32-arm.c deleted file mode 100644 index 50a4167a..00000000 --- a/binutils-2.17/bfd/elf32-arm.c +++ /dev/null @@ -1,8359 +0,0 @@ -/* 32-bit ELF support for ARM - Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - - 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 2 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. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libiberty.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf-vxworks.h" -#include "elf/arm.h" - -#ifndef NUM_ELEM -#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) -#endif - -/* Return the relocation section associated with NAME. HTAB is the - bfd's elf32_arm_link_hash_entry. */ -#define RELOC_SECTION(HTAB, NAME) \ - ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME) - -/* Return size of a relocation entry. HTAB is the bfd's - elf32_arm_link_hash_entry. */ -#define RELOC_SIZE(HTAB) \ - ((HTAB)->use_rel \ - ? sizeof (Elf32_External_Rel) \ - : sizeof (Elf32_External_Rela)) - -/* Return function to swap relocations in. HTAB is the bfd's - elf32_arm_link_hash_entry. */ -#define SWAP_RELOC_IN(HTAB) \ - ((HTAB)->use_rel \ - ? bfd_elf32_swap_reloc_in \ - : bfd_elf32_swap_reloca_in) - -/* Return function to swap relocations out. HTAB is the bfd's - elf32_arm_link_hash_entry. */ -#define SWAP_RELOC_OUT(HTAB) \ - ((HTAB)->use_rel \ - ? bfd_elf32_swap_reloc_out \ - : bfd_elf32_swap_reloca_out) - -#define elf_info_to_howto 0 -#define elf_info_to_howto_rel elf32_arm_info_to_howto - -#define ARM_ELF_ABI_VERSION 0 -#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM - -static const struct elf_backend_data elf32_arm_vxworks_bed; - -/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. - R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO - in that slot. */ - -static reloc_howto_type elf32_arm_howto_table_1[] = -{ - /* No relocation */ - HOWTO (R_ARM_NONE, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_PC24, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_PC24", /* name */ - FALSE, /* partial_inplace */ - 0x00ffffff, /* src_mask */ - 0x00ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 32 bit absolute */ - HOWTO (R_ARM_ABS32, /* 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_ARM_ABS32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* standard 32bit pc-relative reloc */ - HOWTO (R_ARM_REL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_REL32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */ - HOWTO (R_ARM_PC13, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_PC13", /* name */ - FALSE, /* partial_inplace */ - 0x000000ff, /* src_mask */ - 0x000000ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 16 bit absolute */ - HOWTO (R_ARM_ABS16, /* 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_ARM_ABS16", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 12 bit absolute */ - HOWTO (R_ARM_ABS12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ABS12", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_ABS5, /* type */ - 6, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 5, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_ABS5", /* name */ - FALSE, /* partial_inplace */ - 0x000007e0, /* src_mask */ - 0x000007e0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* 8 bit absolute */ - HOWTO (R_ARM_ABS8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ABS8", /* name */ - FALSE, /* partial_inplace */ - 0x000000ff, /* src_mask */ - 0x000000ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_SBREL32, /* 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_ARM_SBREL32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* FIXME: Has two more bits of offset in Thumb32. */ - HOWTO (R_ARM_THM_CALL, /* type */ - 1, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 23, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_CALL", /* name */ - FALSE, /* partial_inplace */ - 0x07ff07ff, /* src_mask */ - 0x07ff07ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_PC8, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_PC8", /* name */ - FALSE, /* partial_inplace */ - 0x000000ff, /* src_mask */ - 0x000000ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_BREL_ADJ, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_BREL_ADJ", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_SWI24, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_SWI24", /* name */ - FALSE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0x00000000, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_SWI8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_SWI8", /* name */ - FALSE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0x00000000, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* BLX instruction for the ARM. */ - HOWTO (R_ARM_XPC25, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 25, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_XPC25", /* name */ - FALSE, /* partial_inplace */ - 0x00ffffff, /* src_mask */ - 0x00ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* BLX instruction for the Thumb. */ - HOWTO (R_ARM_THM_XPC22, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 22, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_XPC22", /* name */ - FALSE, /* partial_inplace */ - 0x07ff07ff, /* src_mask */ - 0x07ff07ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* Dynamic TLS relocations. */ - - HOWTO (R_ARM_TLS_DTPMOD32, /* 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_ARM_TLS_DTPMOD32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_DTPOFF32, /* 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_ARM_TLS_DTPOFF32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_TPOFF32, /* 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_ARM_TLS_TPOFF32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Relocs used in ARM Linux */ - - HOWTO (R_ARM_COPY, /* 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_ARM_COPY", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GLOB_DAT, /* 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_ARM_GLOB_DAT", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_JUMP_SLOT, /* 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_ARM_JUMP_SLOT", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_RELATIVE, /* 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_ARM_RELATIVE", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GOTOFF32, /* 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_ARM_GOTOFF32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GOTPC, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_GOTPC", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_GOT32, /* 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_ARM_GOT32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_PLT32, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_PLT32", /* name */ - FALSE, /* partial_inplace */ - 0x00ffffff, /* src_mask */ - 0x00ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_CALL, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_CALL", /* name */ - FALSE, /* partial_inplace */ - 0x00ffffff, /* src_mask */ - 0x00ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_JUMP24, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_JUMP24", /* name */ - FALSE, /* partial_inplace */ - 0x00ffffff, /* src_mask */ - 0x00ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_JUMP24, /* type */ - 1, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_JUMP24", /* name */ - FALSE, /* partial_inplace */ - 0x07ff2fff, /* src_mask */ - 0x07ff2fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_BASE_ABS, /* 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_ARM_BASE_ABS", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_ALU_PCREL7_0, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ALU_PCREL_7_0", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_ALU_PCREL15_8, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - TRUE, /* pc_relative */ - 8, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ALU_PCREL_15_8",/* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_ALU_PCREL23_15, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - TRUE, /* pc_relative */ - 16, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ALU_PCREL_23_15",/* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_LDR_SBREL_11_0, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_LDR_SBREL_11_0",/* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_ALU_SBREL_19_12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 12, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ALU_SBREL_19_12",/* name */ - FALSE, /* partial_inplace */ - 0x000ff000, /* src_mask */ - 0x000ff000, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_ALU_SBREL_27_20, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - FALSE, /* pc_relative */ - 20, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_ALU_SBREL_27_20",/* name */ - FALSE, /* partial_inplace */ - 0x0ff00000, /* src_mask */ - 0x0ff00000, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TARGET1, /* 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_ARM_TARGET1", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_ROSEGREL32, /* 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_ARM_ROSEGREL32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_V4BX, /* 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_ARM_V4BX", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TARGET2, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_TARGET2", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_PREL31, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 31, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_PREL31", /* name */ - FALSE, /* partial_inplace */ - 0x7fffffff, /* src_mask */ - 0x7fffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVW_ABS_NC, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVW_ABS_NC", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVT_ABS, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVT_ABS", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVW_PREL_NC, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVW_PREL_NC", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVT_PREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVT_PREL", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVW_ABS_NC",/* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVT_ABS, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVT_ABS", /* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVW_PREL_NC",/* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVT_PREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVT_PREL", /* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_JUMP19, /* type */ - 1, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 19, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_JUMP19", /* name */ - FALSE, /* partial_inplace */ - 0x043f2fff, /* src_mask */ - 0x043f2fff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_JUMP6, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 6, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_unsigned,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_JUMP6", /* name */ - FALSE, /* partial_inplace */ - 0x02f8, /* src_mask */ - 0x02f8, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* These are declared as 13-bit signed relocations because we can - address -4095 .. 4095(base) by altering ADDW to SUBW or vice - versa. */ - HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 13, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_ALU_PREL_11_0",/* name */ - FALSE, /* partial_inplace */ - 0x040070ff, /* src_mask */ - 0x040070ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_PC12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 13, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_PC12", /* name */ - FALSE, /* partial_inplace */ - 0x040070ff, /* src_mask */ - 0x040070ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_ABS32_NOI, /* 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_ARM_ABS32_NOI", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_REL32_NOI, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_REL32_NOI", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ -}; - -/* Relocations 57 .. 83 are the "group relocations" which we do not - support. */ - -static reloc_howto_type elf32_arm_howto_table_2[] = -{ - HOWTO (R_ARM_MOVW_BREL_NC, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVW_BREL_NC", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVT_BREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVT_BREL", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_MOVW_BREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_MOVW_BREL", /* name */ - FALSE, /* partial_inplace */ - 0x0000ffff, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVW_BREL_NC",/* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVT_BREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVT_BREL", /* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_MOVW_BREL, /* type */ - 0, /* rightshift */ - 2, /* 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_ARM_THM_MOVW_BREL", /* name */ - FALSE, /* partial_inplace */ - 0x040f70ff, /* src_mask */ - 0x040f70ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - EMPTY_HOWTO (90), /* unallocated */ - EMPTY_HOWTO (91), - EMPTY_HOWTO (92), - EMPTY_HOWTO (93), - - HOWTO (R_ARM_PLT32_ABS, /* 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_ARM_PLT32_ABS", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GOT_ABS, /* 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_ARM_GOT_ABS", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GOT_PREL, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_GOT_PREL", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_GOT_BREL12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_GOT_BREL12", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_GOTOFF12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_GOTOFF12", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */ - - /* GNU extension to record C++ vtable member usage */ - HOWTO (R_ARM_GNU_VTENTRY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - _bfd_elf_rel_vtable_reloc_fn, /* special_function */ - "R_ARM_GNU_VTENTRY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* GNU extension to record C++ vtable hierarchy */ - HOWTO (R_ARM_GNU_VTINHERIT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - NULL, /* special_function */ - "R_ARM_GNU_VTINHERIT", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_JUMP11, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 11, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_JUMP11", /* name */ - FALSE, /* partial_inplace */ - 0x000007ff, /* src_mask */ - 0x000007ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_ARM_THM_JUMP8, /* type */ - 1, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_THM_JUMP8", /* name */ - FALSE, /* partial_inplace */ - 0x000000ff, /* src_mask */ - 0x000000ff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* TLS relocations */ - HOWTO (R_ARM_TLS_GD32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - NULL, /* special_function */ - "R_ARM_TLS_GD32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_LDM32, /* 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_ARM_TLS_LDM32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_LDO32, /* 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_ARM_TLS_LDO32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_IE32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - NULL, /* special_function */ - "R_ARM_TLS_IE32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_LE32, /* 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_ARM_TLS_LE32", /* name */ - TRUE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_LDO12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_TLS_LDO12", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_LE12, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_TLS_LE12", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_TLS_IE12GP, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_TLS_IE12GP", /* name */ - FALSE, /* partial_inplace */ - 0x00000fff, /* src_mask */ - 0x00000fff, /* dst_mask */ - FALSE), /* pcrel_offset */ -}; - -/* 112-127 private relocations - 128 R_ARM_ME_TOO, obsolete - 129-255 unallocated in AAELF. - - 249-255 extended, currently unused, relocations: */ - -static reloc_howto_type elf32_arm_howto_table_3[4] = -{ - HOWTO (R_ARM_RREL32, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_RREL32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_RABS32, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_RABS32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_RPC24, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_RPC24", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_ARM_RBASE, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont,/* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_ARM_RBASE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE) /* pcrel_offset */ -}; - -static reloc_howto_type * -elf32_arm_howto_from_type (unsigned int r_type) -{ - if (r_type < NUM_ELEM (elf32_arm_howto_table_1)) - return &elf32_arm_howto_table_1[r_type]; - - if (r_type >= R_ARM_MOVW_BREL_NC - && r_type < R_ARM_MOVW_BREL_NC + NUM_ELEM (elf32_arm_howto_table_2)) - return &elf32_arm_howto_table_2[r_type - R_ARM_MOVW_BREL_NC]; - - if (r_type >= R_ARM_RREL32 - && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2)) - return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32]; - - return NULL; -} - -static void -elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc, - Elf_Internal_Rela * elf_reloc) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (elf_reloc->r_info); - bfd_reloc->howto = elf32_arm_howto_from_type (r_type); -} - -struct elf32_arm_reloc_map - { - bfd_reloc_code_real_type bfd_reloc_val; - unsigned char elf_reloc_val; - }; - -/* All entries in this list must also be present in elf32_arm_howto_table. */ -static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = - { - {BFD_RELOC_NONE, R_ARM_NONE}, - {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, - {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL}, - {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24}, - {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, - {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, - {BFD_RELOC_32, R_ARM_ABS32}, - {BFD_RELOC_32_PCREL, R_ARM_REL32}, - {BFD_RELOC_8, R_ARM_ABS8}, - {BFD_RELOC_16, R_ARM_ABS16}, - {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, - {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, - {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24}, - {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL}, - {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11}, - {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19}, - {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8}, - {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6}, - {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, - {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, - {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, - {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32}, - {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, - {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, - {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, - {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1}, - {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32}, - {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32}, - {BFD_RELOC_ARM_PREL31, R_ARM_PREL31}, - {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}, - {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}, - {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32}, - {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32}, - {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32}, - {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32}, - {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32}, - {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32}, - {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32}, - {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32}, - {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT}, - {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY}, - }; - -static reloc_howto_type * -elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) - if (elf32_arm_reloc_map[i].bfd_reloc_val == code) - return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val); - - return NULL; -} - -/* Support for core dump NOTE sections */ -static bfd_boolean -elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) -{ - int offset; - size_t size; - - switch (note->descsz) - { - default: - return FALSE; - - case 148: /* Linux/ARM 32-bit*/ - /* pr_cursig */ - elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); - - /* pr_pid */ - elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); - - /* pr_reg */ - offset = 72; - size = 72; - - break; - } - - /* Make a ".reg/999" section. */ - return _bfd_elfcore_make_pseudosection (abfd, ".reg", - size, note->descpos + offset); -} - -static bfd_boolean -elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) -{ - switch (note->descsz) - { - default: - return FALSE; - - case 124: /* Linux/ARM elf_prpsinfo */ - elf_tdata (abfd)->core_program - = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); - elf_tdata (abfd)->core_command - = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); - } - - /* Note that for some reason, a spurious space is tacked - onto the end of the args in some (at least one anyway) - implementations, so strip it off if it exists. */ - - { - char *command = elf_tdata (abfd)->core_command; - int n = strlen (command); - - if (0 < n && command[n - 1] == ' ') - command[n - 1] = '\0'; - } - - return TRUE; -} - -#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec -#define TARGET_LITTLE_NAME "elf32-littlearm" -#define TARGET_BIG_SYM bfd_elf32_bigarm_vec -#define TARGET_BIG_NAME "elf32-bigarm" - -#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus -#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo - -typedef unsigned long int insn32; -typedef unsigned short int insn16; - -/* In lieu of proper flags, assume all EABIv4 or later objects are - interworkable. */ -#define INTERWORK_FLAG(abfd) \ - (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \ - || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)) - -/* The linker script knows the section names for placement. - The entry_names are used to do simple name mangling on the stubs. - Given a function name, and its type, the stub can be found. The - name can be changed. The only requirement is the %s be present. */ -#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t" -#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb" - -#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7" -#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm" - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" - -#ifdef FOUR_WORD_PLT - -/* The first entry in a procedure linkage table looks like - this. It is set up so that any shared library function that is - called before the relocation has been set up calls the dynamic - linker first. */ -static const bfd_vma elf32_arm_plt0_entry [] = - { - 0xe52de004, /* str lr, [sp, #-4]! */ - 0xe59fe010, /* ldr lr, [pc, #16] */ - 0xe08fe00e, /* add lr, pc, lr */ - 0xe5bef008, /* ldr pc, [lr, #8]! */ - }; - -/* Subsequent entries in a procedure linkage table look like - this. */ -static const bfd_vma elf32_arm_plt_entry [] = - { - 0xe28fc600, /* add ip, pc, #NN */ - 0xe28cca00, /* add ip, ip, #NN */ - 0xe5bcf000, /* ldr pc, [ip, #NN]! */ - 0x00000000, /* unused */ - }; - -#else - -/* The first entry in a procedure linkage table looks like - this. It is set up so that any shared library function that is - called before the relocation has been set up calls the dynamic - linker first. */ -static const bfd_vma elf32_arm_plt0_entry [] = - { - 0xe52de004, /* str lr, [sp, #-4]! */ - 0xe59fe004, /* ldr lr, [pc, #4] */ - 0xe08fe00e, /* add lr, pc, lr */ - 0xe5bef008, /* ldr pc, [lr, #8]! */ - 0x00000000, /* &GOT[0] - . */ - }; - -/* Subsequent entries in a procedure linkage table look like - this. */ -static const bfd_vma elf32_arm_plt_entry [] = - { - 0xe28fc600, /* add ip, pc, #0xNN00000 */ - 0xe28cca00, /* add ip, ip, #0xNN000 */ - 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */ - }; - -#endif - -/* The format of the first entry in the procedure linkage table - for a VxWorks executable. */ -static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] = - { - 0xe52dc008, /* str ip,[sp,#-8]! */ - 0xe59fc000, /* ldr ip,[pc] */ - 0xe59cf008, /* ldr pc,[ip,#8] */ - 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */ - }; - -/* The format of subsequent entries in a VxWorks executable. */ -static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] = - { - 0xe59fc000, /* ldr ip,[pc] */ - 0xe59cf000, /* ldr pc,[ip] */ - 0x00000000, /* .long @got */ - 0xe59fc000, /* ldr ip,[pc] */ - 0xea000000, /* b _PLT */ - 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ - }; - -/* The format of entries in a VxWorks shared library. */ -static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] = - { - 0xe59fc000, /* ldr ip,[pc] */ - 0xe79cf009, /* ldr pc,[ip,r9] */ - 0x00000000, /* .long @got */ - 0xe59fc000, /* ldr ip,[pc] */ - 0xe599f008, /* ldr pc,[r9,#8] */ - 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */ - }; - -/* An initial stub used if the PLT entry is referenced from Thumb code. */ -#define PLT_THUMB_STUB_SIZE 4 -static const bfd_vma elf32_arm_plt_thumb_stub [] = - { - 0x4778, /* bx pc */ - 0x46c0 /* nop */ - }; - -/* The entries in a PLT when using a DLL-based target with multiple - address spaces. */ -static const bfd_vma elf32_arm_symbian_plt_entry [] = - { - 0xe51ff004, /* ldr pc, [pc, #-4] */ - 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */ - }; - -/* Used to build a map of a section. This is required for mixed-endian - code/data. */ - -typedef struct elf32_elf_section_map -{ - bfd_vma vma; - char type; -} -elf32_arm_section_map; - -typedef struct _arm_elf_section_data -{ - struct bfd_elf_section_data elf; - unsigned int mapcount; - elf32_arm_section_map *map; -} -_arm_elf_section_data; - -#define elf32_arm_section_data(sec) \ - ((_arm_elf_section_data *) elf_section_data (sec)) - -/* The size of the thread control block. */ -#define TCB_SIZE 8 - -#define NUM_KNOWN_ATTRIBUTES 32 - -typedef struct aeabi_attribute -{ - int type; - unsigned int i; - char *s; -} aeabi_attribute; - -typedef struct aeabi_attribute_list -{ - struct aeabi_attribute_list *next; - int tag; - aeabi_attribute attr; -} aeabi_attribute_list; - -struct elf32_arm_obj_tdata -{ - struct elf_obj_tdata root; - - /* tls_type for each local got entry. */ - char *local_got_tls_type; - - aeabi_attribute known_eabi_attributes[NUM_KNOWN_ATTRIBUTES]; - aeabi_attribute_list *other_eabi_attributes; -}; - -#define elf32_arm_tdata(abfd) \ - ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any) - -#define elf32_arm_local_got_tls_type(abfd) \ - (elf32_arm_tdata (abfd)->local_got_tls_type) - -static bfd_boolean -elf32_arm_mkobject (bfd *abfd) -{ - bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata); - abfd->tdata.any = bfd_zalloc (abfd, amt); - if (abfd->tdata.any == NULL) - return FALSE; - return TRUE; -} - -/* The ARM linker needs to keep track of the number of relocs that it - decides to copy in check_relocs for each symbol. This is so that - it can discard PC relative relocs if it doesn't need them when - linking with -Bsymbolic. We store the information in a field - extending the regular ELF linker hash table. */ - -/* This structure keeps track of the number of relocs we have copied - for a given symbol. */ -struct elf32_arm_relocs_copied - { - /* Next section. */ - struct elf32_arm_relocs_copied * next; - /* A section in dynobj. */ - asection * section; - /* Number of relocs copied in this section. */ - bfd_size_type count; - /* Number of PC-relative relocs copied in this section. */ - bfd_size_type pc_count; - }; - -#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent)) - -/* Arm ELF linker hash entry. */ -struct elf32_arm_link_hash_entry - { - struct elf_link_hash_entry root; - - /* Number of PC relative relocs copied for this symbol. */ - struct elf32_arm_relocs_copied * relocs_copied; - - /* We reference count Thumb references to a PLT entry separately, - so that we can emit the Thumb trampoline only if needed. */ - bfd_signed_vma plt_thumb_refcount; - - /* Since PLT entries have variable size if the Thumb prologue is - used, we need to record the index into .got.plt instead of - recomputing it from the PLT offset. */ - bfd_signed_vma plt_got_offset; - -#define GOT_UNKNOWN 0 -#define GOT_NORMAL 1 -#define GOT_TLS_GD 2 -#define GOT_TLS_IE 4 - unsigned char tls_type; - }; - -/* Traverse an arm ELF linker hash table. */ -#define elf32_arm_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ - (info))) - -/* Get the ARM elf linker hash table from a link_info structure. */ -#define elf32_arm_hash_table(info) \ - ((struct elf32_arm_link_hash_table *) ((info)->hash)) - -/* ARM ELF linker hash table. */ -struct elf32_arm_link_hash_table - { - /* The main hash table. */ - struct elf_link_hash_table root; - - /* The size in bytes of the section containing the Thumb-to-ARM glue. */ - bfd_size_type thumb_glue_size; - - /* The size in bytes of the section containing the ARM-to-Thumb glue. */ - bfd_size_type arm_glue_size; - - /* An arbitrary input BFD chosen to hold the glue sections. */ - bfd * bfd_of_glue_owner; - - /* Nonzero to output a BE8 image. */ - int byteswap_code; - - /* Zero if R_ARM_TARGET1 means R_ARM_ABS32. - Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */ - int target1_is_rel; - - /* The relocation to use for R_ARM_TARGET2 relocations. */ - int target2_reloc; - - /* Nonzero to fix BX instructions for ARMv4 targets. */ - int fix_v4bx; - - /* Nonzero if the ARM/Thumb BLX instructions are available for use. */ - int use_blx; - - /* The number of bytes in the initial entry in the PLT. */ - bfd_size_type plt_header_size; - - /* The number of bytes in the subsequent PLT etries. */ - bfd_size_type plt_entry_size; - - /* True if the target system is VxWorks. */ - int vxworks_p; - - /* True if the target system is Symbian OS. */ - int symbian_p; - - /* True if the target uses REL relocations. */ - int use_rel; - - /* Short-cuts to get to dynamic linker sections. */ - asection *sgot; - asection *sgotplt; - asection *srelgot; - asection *splt; - asection *srelplt; - asection *sdynbss; - asection *srelbss; - - /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */ - asection *srelplt2; - - /* Data for R_ARM_TLS_LDM32 relocations. */ - union { - bfd_signed_vma refcount; - bfd_vma offset; - } tls_ldm_got; - - /* Small local sym to section mapping cache. */ - struct sym_sec_cache sym_sec; - - /* For convenience in allocate_dynrelocs. */ - bfd * obfd; - }; - -/* Create an entry in an ARM ELF linker hash table. */ - -static struct bfd_hash_entry * -elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry, - struct bfd_hash_table * table, - const char * string) -{ - struct elf32_arm_link_hash_entry * ret = - (struct elf32_arm_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct elf32_arm_link_hash_entry *) NULL) - ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry)); - if (ret == NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct elf32_arm_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != NULL) - { - ret->relocs_copied = NULL; - ret->tls_type = GOT_UNKNOWN; - ret->plt_thumb_refcount = 0; - ret->plt_got_offset = -1; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Return true if NAME is the name of the relocation section associated - with S. */ - -static bfd_boolean -reloc_section_p (struct elf32_arm_link_hash_table *htab, - const char *name, asection *s) -{ - if (htab->use_rel) - return strncmp (name, ".rel", 4) == 0 && strcmp (s->name, name + 4) == 0; - else - return strncmp (name, ".rela", 5) == 0 && strcmp (s->name, name + 5) == 0; -} - -/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up - shortcuts to them in our hash table. */ - -static bfd_boolean -create_got_section (bfd *dynobj, struct bfd_link_info *info) -{ - struct elf32_arm_link_hash_table *htab; - - htab = elf32_arm_hash_table (info); - /* BPABI objects never have a GOT, or associated sections. */ - if (htab->symbian_p) - return TRUE; - - if (! _bfd_elf_create_got_section (dynobj, info)) - return FALSE; - - htab->sgot = bfd_get_section_by_name (dynobj, ".got"); - htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); - if (!htab->sgot || !htab->sgotplt) - abort (); - - htab->srelgot = bfd_make_section_with_flags (dynobj, - RELOC_SECTION (htab, ".got"), - (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)); - if (htab->srelgot == NULL - || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) - return FALSE; - return TRUE; -} - -/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and - .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our - hash table. */ - -static bfd_boolean -elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) -{ - struct elf32_arm_link_hash_table *htab; - - htab = elf32_arm_hash_table (info); - if (!htab->sgot && !create_got_section (dynobj, info)) - return FALSE; - - if (!_bfd_elf_create_dynamic_sections (dynobj, info)) - return FALSE; - - htab->splt = bfd_get_section_by_name (dynobj, ".plt"); - htab->srelplt = bfd_get_section_by_name (dynobj, - RELOC_SECTION (htab, ".plt")); - htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); - if (!info->shared) - htab->srelbss = bfd_get_section_by_name (dynobj, - RELOC_SECTION (htab, ".bss")); - - if (htab->vxworks_p) - { - if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2)) - return FALSE; - - if (info->shared) - { - htab->plt_header_size = 0; - htab->plt_entry_size - = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry); - } - else - { - htab->plt_header_size - = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry); - htab->plt_entry_size - = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry); - } - } - - if (!htab->splt - || !htab->srelplt - || !htab->sdynbss - || (!info->shared && !htab->srelbss)) - abort (); - - return TRUE; -} - -/* Copy the extra info we tack onto an elf_link_hash_entry. */ - -static void -elf32_arm_copy_indirect_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *dir, - struct elf_link_hash_entry *ind) -{ - struct elf32_arm_link_hash_entry *edir, *eind; - - edir = (struct elf32_arm_link_hash_entry *) dir; - eind = (struct elf32_arm_link_hash_entry *) ind; - - if (eind->relocs_copied != NULL) - { - if (edir->relocs_copied != NULL) - { - struct elf32_arm_relocs_copied **pp; - struct elf32_arm_relocs_copied *p; - - /* Add reloc counts against the indirect sym to the direct sym - list. Merge any entries against the same section. */ - for (pp = &eind->relocs_copied; (p = *pp) != NULL; ) - { - struct elf32_arm_relocs_copied *q; - - for (q = edir->relocs_copied; q != NULL; q = q->next) - if (q->section == p->section) - { - q->pc_count += p->pc_count; - q->count += p->count; - *pp = p->next; - break; - } - if (q == NULL) - pp = &p->next; - } - *pp = edir->relocs_copied; - } - - edir->relocs_copied = eind->relocs_copied; - eind->relocs_copied = NULL; - } - - /* Copy over PLT info. */ - edir->plt_thumb_refcount += eind->plt_thumb_refcount; - eind->plt_thumb_refcount = 0; - - if (ind->root.type == bfd_link_hash_indirect - && dir->got.refcount <= 0) - { - edir->tls_type = eind->tls_type; - eind->tls_type = GOT_UNKNOWN; - } - - _bfd_elf_link_hash_copy_indirect (info, dir, ind); -} - -/* Create an ARM elf linker hash table. */ - -static struct bfd_link_hash_table * -elf32_arm_link_hash_table_create (bfd *abfd) -{ - struct elf32_arm_link_hash_table *ret; - bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table); - - ret = bfd_malloc (amt); - if (ret == NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (& ret->root, abfd, - elf32_arm_link_hash_newfunc, - sizeof (struct elf32_arm_link_hash_entry))) - { - free (ret); - return NULL; - } - - ret->sgot = NULL; - ret->sgotplt = NULL; - ret->srelgot = NULL; - ret->splt = NULL; - ret->srelplt = NULL; - ret->sdynbss = NULL; - ret->srelbss = NULL; - ret->srelplt2 = NULL; - ret->thumb_glue_size = 0; - ret->arm_glue_size = 0; - ret->bfd_of_glue_owner = NULL; - ret->byteswap_code = 0; - ret->target1_is_rel = 0; - ret->target2_reloc = R_ARM_NONE; -#ifdef FOUR_WORD_PLT - ret->plt_header_size = 16; - ret->plt_entry_size = 16; -#else - ret->plt_header_size = 20; - ret->plt_entry_size = 12; -#endif - ret->fix_v4bx = 0; - ret->use_blx = 0; - ret->vxworks_p = 0; - ret->symbian_p = 0; - ret->use_rel = 1; - ret->sym_sec.abfd = NULL; - ret->obfd = abfd; - ret->tls_ldm_got.refcount = 0; - - return &ret->root.root; -} - -/* Locate the Thumb encoded calling stub for NAME. */ - -static struct elf_link_hash_entry * -find_thumb_glue (struct bfd_link_info *link_info, - const char *name, - bfd *input_bfd) -{ - char *tmp_name; - struct elf_link_hash_entry *hash; - struct elf32_arm_link_hash_table *hash_table; - - /* We need a pointer to the armelf specific hash table. */ - hash_table = elf32_arm_hash_table (link_info); - - tmp_name = bfd_malloc ((bfd_size_type) strlen (name) - + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); - - hash = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); - - if (hash == NULL) - /* xgettext:c-format */ - (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"), - input_bfd, tmp_name, name); - - free (tmp_name); - - return hash; -} - -/* Locate the ARM encoded calling stub for NAME. */ - -static struct elf_link_hash_entry * -find_arm_glue (struct bfd_link_info *link_info, - const char *name, - bfd *input_bfd) -{ - char *tmp_name; - struct elf_link_hash_entry *myh; - struct elf32_arm_link_hash_table *hash_table; - - /* We need a pointer to the elfarm specific hash table. */ - hash_table = elf32_arm_hash_table (link_info); - - tmp_name = bfd_malloc ((bfd_size_type) strlen (name) - + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); - - if (myh == NULL) - /* xgettext:c-format */ - (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"), - input_bfd, tmp_name, name); - - free (tmp_name); - - return myh; -} - -/* ARM->Thumb glue (static images): - - .arm - __func_from_arm: - ldr r12, __func_addr - bx r12 - __func_addr: - .word func @ behave as if you saw a ARM_32 reloc. - - (relocatable images) - .arm - __func_from_arm: - ldr r12, __func_offset - add r12, r12, pc - bx r12 - __func_offset: - .word func - . - */ - -#define ARM2THUMB_STATIC_GLUE_SIZE 12 -static const insn32 a2t1_ldr_insn = 0xe59fc000; -static const insn32 a2t2_bx_r12_insn = 0xe12fff1c; -static const insn32 a2t3_func_addr_insn = 0x00000001; - -#define ARM2THUMB_PIC_GLUE_SIZE 16 -static const insn32 a2t1p_ldr_insn = 0xe59fc004; -static const insn32 a2t2p_add_pc_insn = 0xe08cc00f; -static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c; - -/* Thumb->ARM: Thumb->(non-interworking aware) ARM - - .thumb .thumb - .align 2 .align 2 - __func_from_thumb: __func_from_thumb: - bx pc push {r6, lr} - nop ldr r6, __func_addr - .arm mov lr, pc - __func_change_to_arm: bx r6 - b func .arm - __func_back_to_thumb: - ldmia r13! {r6, lr} - bx lr - __func_addr: - .word func */ - -#define THUMB2ARM_GLUE_SIZE 8 -static const insn16 t2a1_bx_pc_insn = 0x4778; -static const insn16 t2a2_noop_insn = 0x46c0; -static const insn32 t2a3_b_insn = 0xea000000; - -#ifndef ELFARM_NABI_C_INCLUDED -bfd_boolean -bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info) -{ - asection * s; - bfd_byte * foo; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - - if (globals->arm_glue_size != 0) - { - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name (globals->bfd_of_glue_owner, - ARM2THUMB_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size); - - s->size = globals->arm_glue_size; - s->contents = foo; - } - - if (globals->thumb_glue_size != 0) - { - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size); - - s->size = globals->thumb_glue_size; - s->contents = foo; - } - - return TRUE; -} - -static void -record_arm_to_thumb_glue (struct bfd_link_info * link_info, - struct elf_link_hash_entry * h) -{ - const char * name = h->root.root.string; - asection * s; - char * tmp_name; - struct elf_link_hash_entry * myh; - struct bfd_link_hash_entry * bh; - struct elf32_arm_link_hash_table * globals; - bfd_vma val; - - globals = elf32_arm_hash_table (link_info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(globals)->root, tmp_name, FALSE, FALSE, TRUE); - - if (myh != NULL) - { - /* We've already seen this guy. */ - free (tmp_name); - return; - } - - /* The only trick here is using hash_table->arm_glue_size as the value. - Even though the section isn't allocated yet, this is where we will be - putting it. */ - bh = NULL; - val = globals->arm_glue_size + 1; - _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, - tmp_name, BSF_GLOBAL, s, val, - NULL, TRUE, FALSE, &bh); - - myh = (struct elf_link_hash_entry *) bh; - myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC); - myh->forced_local = 1; - - free (tmp_name); - - if ((link_info->shared || globals->root.is_relocatable_executable)) - globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE; - else - globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE; - - return; -} - -static void -record_thumb_to_arm_glue (struct bfd_link_info *link_info, - struct elf_link_hash_entry *h) -{ - const char *name = h->root.root.string; - asection *s; - char *tmp_name; - struct elf_link_hash_entry *myh; - struct bfd_link_hash_entry *bh; - struct elf32_arm_link_hash_table *hash_table; - bfd_vma val; - - hash_table = elf32_arm_hash_table (link_info); - - BFD_ASSERT (hash_table != NULL); - BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL); - - s = bfd_get_section_by_name - (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - - tmp_name = bfd_malloc ((bfd_size_type) strlen (name) - + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name); - - myh = elf_link_hash_lookup - (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE); - - if (myh != NULL) - { - /* We've already seen this guy. */ - free (tmp_name); - return; - } - - bh = NULL; - val = hash_table->thumb_glue_size + 1; - _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, - tmp_name, BSF_GLOBAL, s, val, - NULL, TRUE, FALSE, &bh); - - /* If we mark it 'Thumb', the disassembler will do a better job. */ - myh = (struct elf_link_hash_entry *) bh; - myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC); - myh->forced_local = 1; - - free (tmp_name); - -#define CHANGE_TO_ARM "__%s_change_to_arm" -#define BACK_FROM_ARM "__%s_back_from_arm" - - /* Allocate another symbol to mark where we switch to Arm mode. */ - tmp_name = bfd_malloc ((bfd_size_type) strlen (name) - + strlen (CHANGE_TO_ARM) + 1); - - BFD_ASSERT (tmp_name); - - sprintf (tmp_name, CHANGE_TO_ARM, name); - - bh = NULL; - val = hash_table->thumb_glue_size + 4, - _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, - tmp_name, BSF_LOCAL, s, val, - NULL, TRUE, FALSE, &bh); - - free (tmp_name); - - hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE; - - return; -} - -/* Add the glue sections to ABFD. This function is called from the - linker scripts in ld/emultempl/{armelf}.em. */ - -bfd_boolean -bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd, - struct bfd_link_info *info) -{ - flagword flags; - asection *sec; - - /* If we are only performing a partial - link do not bother adding the glue. */ - if (info->relocatable) - return TRUE; - - sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME); - - if (sec == NULL) - { - /* Note: we do not include the flag SEC_LINKER_CREATED, as this - will prevent elf_link_input_bfd() from processing the contents - of this section. */ - flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY; - - sec = bfd_make_section_with_flags (abfd, - ARM2THUMB_GLUE_SECTION_NAME, - flags); - - if (sec == NULL - || !bfd_set_section_alignment (abfd, sec, 2)) - return FALSE; - - /* Set the gc mark to prevent the section from being removed by garbage - collection, despite the fact that no relocs refer to this section. */ - sec->gc_mark = 1; - } - - sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME); - - if (sec == NULL) - { - flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_CODE | SEC_READONLY; - - sec = bfd_make_section_with_flags (abfd, - THUMB2ARM_GLUE_SECTION_NAME, - flags); - - if (sec == NULL - || !bfd_set_section_alignment (abfd, sec, 2)) - return FALSE; - - sec->gc_mark = 1; - } - - return TRUE; -} - -/* Select a BFD to be used to hold the sections used by the glue code. - This function is called from the linker scripts in ld/emultempl/ - {armelf/pe}.em */ - -bfd_boolean -bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info) -{ - struct elf32_arm_link_hash_table *globals; - - /* If we are only performing a partial link - do not bother getting a bfd to hold the glue. */ - if (info->relocatable) - return TRUE; - - /* Make sure we don't attach the glue sections to a dynamic object. */ - BFD_ASSERT (!(abfd->flags & DYNAMIC)); - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - - if (globals->bfd_of_glue_owner != NULL) - return TRUE; - - /* Save the bfd for later use. */ - globals->bfd_of_glue_owner = abfd; - - return TRUE; -} - -static void check_use_blx(struct elf32_arm_link_hash_table *globals) -{ - if (elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch) > 2) - globals->use_blx = 1; -} - -bfd_boolean -bfd_elf32_arm_process_before_allocation (bfd *abfd, - struct bfd_link_info *link_info, - int byteswap_code) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *contents = NULL; - - asection *sec; - struct elf32_arm_link_hash_table *globals; - - /* If we are only performing a partial link do not bother - to construct any glue. */ - if (link_info->relocatable) - return TRUE; - - /* Here we have a bfd that is to be included on the link. We have a hook - to do reloc rummaging, before section sizes are nailed down. */ - globals = elf32_arm_hash_table (link_info); - check_use_blx (globals); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - if (byteswap_code && !bfd_big_endian (abfd)) - { - _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."), - abfd); - return FALSE; - } - globals->byteswap_code = byteswap_code; - - /* Rummage around all the relocs and map the glue vectors. */ - sec = abfd->sections; - - if (sec == NULL) - return TRUE; - - for (; sec != NULL; sec = sec->next) - { - if (sec->reloc_count == 0) - continue; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Load the relocs. */ - internal_relocs - = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL, - (Elf_Internal_Rela *) NULL, FALSE); - - if (internal_relocs == NULL) - goto error_return; - - irelend = internal_relocs + sec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++) - { - long r_type; - unsigned long r_index; - - struct elf_link_hash_entry *h; - - r_type = ELF32_R_TYPE (irel->r_info); - r_index = ELF32_R_SYM (irel->r_info); - - /* These are the only relocation types we care about. */ - if ( r_type != R_ARM_PC24 - && r_type != R_ARM_PLT32 - && r_type != R_ARM_CALL - && r_type != R_ARM_JUMP24 - && r_type != R_ARM_THM_CALL) - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else - { - /* Go get them off disk. */ - if (! bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - } - - /* If the relocation is not against a symbol it cannot concern us. */ - h = NULL; - - /* We don't care about local symbols. */ - if (r_index < symtab_hdr->sh_info) - continue; - - /* This is an external symbol. */ - r_index -= symtab_hdr->sh_info; - h = (struct elf_link_hash_entry *) - elf_sym_hashes (abfd)[r_index]; - - /* If the relocation is against a static symbol it must be within - the current section and so cannot be a cross ARM/Thumb relocation. */ - if (h == NULL) - continue; - - /* If the call will go through a PLT entry then we do not need - glue. */ - if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1) - continue; - - switch (r_type) - { - case R_ARM_PC24: - case R_ARM_PLT32: - case R_ARM_CALL: - case R_ARM_JUMP24: - /* This one is a call from arm code. We need to look up - the target of the call. If it is a thumb target, we - insert glue. */ - if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC - && !(r_type == R_ARM_CALL && globals->use_blx)) - record_arm_to_thumb_glue (link_info, h); - break; - - case R_ARM_THM_CALL: - /* This one is a call from thumb code. We look - up the target of the call. If it is not a thumb - target, we insert glue. */ - if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx) - record_thumb_to_arm_glue (link_info, h); - break; - - default: - abort (); - } - } - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - free (contents); - contents = NULL; - - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - internal_relocs = NULL; - } - - return TRUE; - -error_return: - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - free (contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return FALSE; -} -#endif - - -/* Set target relocation values needed during linking. */ - -void -bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info, - int target1_is_rel, - char * target2_type, - int fix_v4bx, - int use_blx) -{ - struct elf32_arm_link_hash_table *globals; - - globals = elf32_arm_hash_table (link_info); - - globals->target1_is_rel = target1_is_rel; - if (strcmp (target2_type, "rel") == 0) - globals->target2_reloc = R_ARM_REL32; - else if (strcmp (target2_type, "abs") == 0) - globals->target2_reloc = R_ARM_ABS32; - else if (strcmp (target2_type, "got-rel") == 0) - globals->target2_reloc = R_ARM_GOT_PREL; - else - { - _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."), - target2_type); - } - globals->fix_v4bx = fix_v4bx; - globals->use_blx |= use_blx; -} - -/* The thumb form of a long branch is a bit finicky, because the offset - encoding is split over two fields, each in it's own instruction. They - can occur in any order. So given a thumb form of long branch, and an - offset, insert the offset into the thumb branch and return finished - instruction. - - It takes two thumb instructions to encode the target address. Each has - 11 bits to invest. The upper 11 bits are stored in one (identified by - H-0.. see below), the lower 11 bits are stored in the other (identified - by H-1). - - Combine together and shifted left by 1 (it's a half word address) and - there you have it. - - Op: 1111 = F, - H-0, upper address-0 = 000 - Op: 1111 = F, - H-1, lower address-0 = 800 - - They can be ordered either way, but the arm tools I've seen always put - the lower one first. It probably doesn't matter. krk@cygnus.com - - XXX: Actually the order does matter. The second instruction (H-1) - moves the computed address into the PC, so it must be the second one - in the sequence. The problem, however is that whilst little endian code - stores the instructions in HI then LOW order, big endian code does the - reverse. nickc@cygnus.com. */ - -#define LOW_HI_ORDER 0xF800F000 -#define HI_LOW_ORDER 0xF000F800 - -static insn32 -insert_thumb_branch (insn32 br_insn, int rel_off) -{ - unsigned int low_bits; - unsigned int high_bits; - - BFD_ASSERT ((rel_off & 1) != 1); - - rel_off >>= 1; /* Half word aligned address. */ - low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */ - high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */ - - if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER) - br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits; - else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER) - br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits; - else - /* FIXME: abort is probably not the right call. krk@cygnus.com */ - abort (); /* Error - not a valid branch instruction form. */ - - return br_insn; -} - -/* Thumb code calling an ARM function. */ - -static int -elf32_thumb_to_arm_stub (struct bfd_link_info * info, - const char * name, - bfd * input_bfd, - bfd * output_bfd, - asection * input_section, - bfd_byte * hit_data, - asection * sym_sec, - bfd_vma offset, - bfd_signed_vma addend, - bfd_vma val) -{ - asection * s = 0; - bfd_vma my_offset; - unsigned long int tmp; - long int ret_offset; - struct elf_link_hash_entry * myh; - struct elf32_arm_link_hash_table * globals; - - myh = find_thumb_glue (info, name, input_bfd); - if (myh == NULL) - return FALSE; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - my_offset = myh->root.u.def.value; - - s = bfd_get_section_by_name (globals->bfd_of_glue_owner, - THUMB2ARM_GLUE_SECTION_NAME); - - BFD_ASSERT (s != NULL); - BFD_ASSERT (s->contents != NULL); - BFD_ASSERT (s->output_section != NULL); - - if ((my_offset & 0x01) == 0x01) - { - if (sym_sec != NULL - && sym_sec->owner != NULL - && !INTERWORK_FLAG (sym_sec->owner)) - { - (*_bfd_error_handler) - (_("%B(%s): warning: interworking not enabled.\n" - " first occurrence: %B: thumb call to arm"), - sym_sec->owner, input_bfd, name); - - return FALSE; - } - - --my_offset; - myh->root.u.def.value = my_offset; - - bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn, - s->contents + my_offset); - - bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn, - s->contents + my_offset + 2); - - ret_offset = - /* Address of destination of the stub. */ - ((bfd_signed_vma) val) - - ((bfd_signed_vma) - /* Offset from the start of the current section - to the start of the stubs. */ - (s->output_offset - /* Offset of the start of this stub from the start of the stubs. */ - + my_offset - /* Address of the start of the current section. */ - + s->output_section->vma) - /* The branch instruction is 4 bytes into the stub. */ - + 4 - /* ARM branches work from the pc of the instruction + 8. */ - + 8); - - bfd_put_32 (output_bfd, - (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF), - s->contents + my_offset + 4); - } - - BFD_ASSERT (my_offset <= globals->thumb_glue_size); - - /* Now go back and fix up the original BL insn to point to here. */ - ret_offset = - /* Address of where the stub is located. */ - (s->output_section->vma + s->output_offset + my_offset) - /* Address of where the BL is located. */ - - (input_section->output_section->vma + input_section->output_offset - + offset) - /* Addend in the relocation. */ - - addend - /* Biassing for PC-relative addressing. */ - - 8; - - tmp = bfd_get_32 (input_bfd, hit_data - - input_section->vma); - - bfd_put_32 (output_bfd, - (bfd_vma) insert_thumb_branch (tmp, ret_offset), - hit_data - input_section->vma); - - return TRUE; -} - -/* Arm code calling a Thumb function. */ - -static int -elf32_arm_to_thumb_stub (struct bfd_link_info * info, - const char * name, - bfd * input_bfd, - bfd * output_bfd, - asection * input_section, - bfd_byte * hit_data, - asection * sym_sec, - bfd_vma offset, - bfd_signed_vma addend, - bfd_vma val) -{ - unsigned long int tmp; - bfd_vma my_offset; - asection * s; - long int ret_offset; - struct elf_link_hash_entry * myh; - struct elf32_arm_link_hash_table * globals; - - myh = find_arm_glue (info, name, input_bfd); - if (myh == NULL) - return FALSE; - - globals = elf32_arm_hash_table (info); - - BFD_ASSERT (globals != NULL); - BFD_ASSERT (globals->bfd_of_glue_owner != NULL); - - my_offset = myh->root.u.def.value; - s = bfd_get_section_by_name (globals->bfd_of_glue_owner, - ARM2THUMB_GLUE_SECTION_NAME); - BFD_ASSERT (s != NULL); - BFD_ASSERT (s->contents != NULL); - BFD_ASSERT (s->output_section != NULL); - - if ((my_offset & 0x01) == 0x01) - { - if (sym_sec != NULL - && sym_sec->owner != NULL - && !INTERWORK_FLAG (sym_sec->owner)) - { - (*_bfd_error_handler) - (_("%B(%s): warning: interworking not enabled.\n" - " first occurrence: %B: arm call to thumb"), - sym_sec->owner, input_bfd, name); - } - - --my_offset; - myh->root.u.def.value = my_offset; - - if ((info->shared || globals->root.is_relocatable_executable)) - { - /* For relocatable objects we can't use absolute addresses, - so construct the address from a relative offset. */ - /* TODO: If the offset is small it's probably worth - constructing the address with adds. */ - bfd_put_32 (output_bfd, (bfd_vma) a2t1p_ldr_insn, - s->contents + my_offset); - bfd_put_32 (output_bfd, (bfd_vma) a2t2p_add_pc_insn, - s->contents + my_offset + 4); - bfd_put_32 (output_bfd, (bfd_vma) a2t3p_bx_r12_insn, - s->contents + my_offset + 8); - /* Adjust the offset by 4 for the position of the add, - and 8 for the pipeline offset. */ - ret_offset = (val - (s->output_offset - + s->output_section->vma - + my_offset + 12)) - | 1; - bfd_put_32 (output_bfd, ret_offset, - s->contents + my_offset + 12); - } - else - { - bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn, - s->contents + my_offset); - - bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn, - s->contents + my_offset + 4); - - /* It's a thumb address. Add the low order bit. */ - bfd_put_32 (output_bfd, val | a2t3_func_addr_insn, - s->contents + my_offset + 8); - } - } - - BFD_ASSERT (my_offset <= globals->arm_glue_size); - - tmp = bfd_get_32 (input_bfd, hit_data); - tmp = tmp & 0xFF000000; - - /* Somehow these are both 4 too far, so subtract 8. */ - ret_offset = (s->output_offset - + my_offset - + s->output_section->vma - - (input_section->output_offset - + input_section->output_section->vma - + offset + addend) - - 8); - - tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF); - - bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma); - - return TRUE; -} - -/* Some relocations map to different relocations depending on the - target. Return the real relocation. */ -static int -arm_real_reloc_type (struct elf32_arm_link_hash_table * globals, - int r_type) -{ - switch (r_type) - { - case R_ARM_TARGET1: - if (globals->target1_is_rel) - return R_ARM_REL32; - else - return R_ARM_ABS32; - - case R_ARM_TARGET2: - return globals->target2_reloc; - - default: - return r_type; - } -} - -/* Return the base VMA address which should be subtracted from real addresses - when resolving @dtpoff relocation. - This is PT_TLS segment p_vaddr. */ - -static bfd_vma -dtpoff_base (struct bfd_link_info *info) -{ - /* If tls_sec is NULL, we should have signalled an error already. */ - if (elf_hash_table (info)->tls_sec == NULL) - return 0; - return elf_hash_table (info)->tls_sec->vma; -} - -/* Return the relocation value for @tpoff relocation - if STT_TLS virtual address is ADDRESS. */ - -static bfd_vma -tpoff (struct bfd_link_info *info, bfd_vma address) -{ - struct elf_link_hash_table *htab = elf_hash_table (info); - bfd_vma base; - - /* If tls_sec is NULL, we should have signalled an error already. */ - if (htab->tls_sec == NULL) - return 0; - base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power); - return address - htab->tls_sec->vma + base; -} - -/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA. - VALUE is the relocation value. */ - -static bfd_reloc_status_type -elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value) -{ - if (value > 0xfff) - return bfd_reloc_overflow; - - value |= bfd_get_32 (abfd, data) & 0xfffff000; - bfd_put_32 (abfd, value, data); - return bfd_reloc_ok; -} - -/* Perform a relocation as part of a final link. */ - -static bfd_reloc_status_type -elf32_arm_final_link_relocate (reloc_howto_type * howto, - bfd * input_bfd, - bfd * output_bfd, - asection * input_section, - bfd_byte * contents, - Elf_Internal_Rela * rel, - bfd_vma value, - struct bfd_link_info * info, - asection * sym_sec, - const char * sym_name, - int sym_flags, - struct elf_link_hash_entry * h, - bfd_boolean * unresolved_reloc_p) -{ - unsigned long r_type = howto->type; - unsigned long r_symndx; - bfd_byte * hit_data = contents + rel->r_offset; - bfd * dynobj = NULL; - Elf_Internal_Shdr * symtab_hdr; - struct elf_link_hash_entry ** sym_hashes; - bfd_vma * local_got_offsets; - asection * sgot = NULL; - asection * splt = NULL; - asection * sreloc = NULL; - bfd_vma addend; - bfd_signed_vma signed_addend; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - - /* Some relocation type map to different relocations depending on the - target. We pick the right one here. */ - r_type = arm_real_reloc_type (globals, r_type); - if (r_type != howto->type) - howto = elf32_arm_howto_from_type (r_type); - - /* If the start address has been set, then set the EF_ARM_HASENTRY - flag. Setting this more than once is redundant, but the cost is - not too high, and it keeps the code simple. - - The test is done here, rather than somewhere else, because the - start address is only set just before the final link commences. - - Note - if the user deliberately sets a start address of 0, the - flag will not be set. */ - if (bfd_get_start_address (output_bfd) != 0) - elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY; - - dynobj = elf_hash_table (info)->dynobj; - if (dynobj) - { - sgot = bfd_get_section_by_name (dynobj, ".got"); - splt = bfd_get_section_by_name (dynobj, ".plt"); - } - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - local_got_offsets = elf_local_got_offsets (input_bfd); - r_symndx = ELF32_R_SYM (rel->r_info); - - if (globals->use_rel) - { - addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask; - - if (addend & ((howto->src_mask + 1) >> 1)) - { - signed_addend = -1; - signed_addend &= ~ howto->src_mask; - signed_addend |= addend; - } - else - signed_addend = addend; - } - else - addend = signed_addend = rel->r_addend; - - switch (r_type) - { - case R_ARM_NONE: - /* We don't need to find a value for this symbol. It's just a - marker. */ - *unresolved_reloc_p = FALSE; - return bfd_reloc_ok; - - case R_ARM_ABS12: - if (!globals->vxworks_p) - return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); - - case R_ARM_PC24: - case R_ARM_ABS32: - case R_ARM_REL32: - case R_ARM_CALL: - case R_ARM_JUMP24: - case R_ARM_XPC25: - case R_ARM_PREL31: - case R_ARM_PLT32: - /* r_symndx will be zero only for relocs against symbols - from removed linkonce sections, or sections discarded by - a linker script. */ - if (r_symndx == 0) - return bfd_reloc_ok; - - /* Handle relocations which should use the PLT entry. ABS32/REL32 - will use the symbol's value, which may point to a PLT entry, but we - don't need to handle that here. If we created a PLT entry, all - branches in this object should go to it. */ - if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32) - && h != NULL - && splt != NULL - && h->plt.offset != (bfd_vma) -1) - { - /* If we've created a .plt section, and assigned a PLT entry to - this function, it should not be known to bind locally. If - it were, we would have cleared the PLT entry. */ - BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h)); - - value = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - *unresolved_reloc_p = FALSE; - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - } - - /* When generating a shared object or relocatable executable, these - relocations are copied into the output file to be resolved at - run time. */ - if ((info->shared || globals->root.is_relocatable_executable) - && (input_section->flags & SEC_ALLOC) - && (r_type != R_ARM_REL32 - || !SYMBOL_CALLS_LOCAL (info, h)) - && (h == NULL - || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT - || h->root.type != bfd_link_hash_undefweak) - && r_type != R_ARM_PC24 - && r_type != R_ARM_CALL - && r_type != R_ARM_JUMP24 - && r_type != R_ARM_PREL31 - && r_type != R_ARM_PLT32) - { - Elf_Internal_Rela outrel; - bfd_byte *loc; - bfd_boolean skip, relocate; - - *unresolved_reloc_p = FALSE; - - if (sreloc == NULL) - { - const char * name; - - name = (bfd_elf_string_from_elf_section - (input_bfd, - elf_elfheader (input_bfd)->e_shstrndx, - elf_section_data (input_section)->rel_hdr.sh_name)); - if (name == NULL) - return bfd_reloc_notsupported; - - BFD_ASSERT (reloc_section_p (globals, name, input_section)); - - sreloc = bfd_get_section_by_name (dynobj, name); - BFD_ASSERT (sreloc != NULL); - } - - skip = FALSE; - relocate = FALSE; - - outrel.r_addend = addend; - outrel.r_offset = - _bfd_elf_section_offset (output_bfd, info, input_section, - rel->r_offset); - if (outrel.r_offset == (bfd_vma) -1) - skip = TRUE; - else if (outrel.r_offset == (bfd_vma) -2) - skip = TRUE, relocate = TRUE; - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - - if (skip) - memset (&outrel, 0, sizeof outrel); - else if (h != NULL - && h->dynindx != -1 - && (!info->shared - || !info->symbolic - || !h->def_regular)) - outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); - else - { - int symbol; - - /* This symbol is local, or marked to become local. */ - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - if (globals->symbian_p) - { - /* On Symbian OS, the data segment and text segement - can be relocated independently. Therefore, we - must indicate the segment to which this - relocation is relative. The BPABI allows us to - use any symbol in the right segment; we just use - the section symbol as it is convenient. (We - cannot use the symbol given by "h" directly as it - will not appear in the dynamic symbol table.) */ - if (sym_sec) - symbol = elf_section_data (sym_sec->output_section)->dynindx; - else - symbol = elf_section_data (input_section->output_section)->dynindx; - BFD_ASSERT (symbol != 0); - } - else - /* On SVR4-ish systems, the dynamic loader cannot - relocate the text and data segments independently, - so the symbol does not matter. */ - symbol = 0; - outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE); - if (globals->use_rel) - relocate = TRUE; - else - outrel.r_addend += value; - } - - loc = sreloc->contents; - loc += sreloc->reloc_count++ * RELOC_SIZE (globals); - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - - /* If this reloc is against an external symbol, we do not want to - fiddle with the addend. Otherwise, we need to include the symbol - value so that it becomes an addend for the dynamic reloc. */ - if (! relocate) - return bfd_reloc_ok; - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - (bfd_vma) 0); - } - else switch (r_type) - { - case R_ARM_ABS12: - return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend); - - case R_ARM_XPC25: /* Arm BLX instruction. */ - case R_ARM_CALL: - case R_ARM_JUMP24: - case R_ARM_PC24: /* Arm B/BL instruction */ - case R_ARM_PLT32: - if (r_type == R_ARM_XPC25) - { - /* Check for Arm calling Arm function. */ - /* FIXME: Should we translate the instruction into a BL - instruction instead ? */ - if (sym_flags != STT_ARM_TFUNC) - (*_bfd_error_handler) - (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."), - input_bfd, - h ? h->root.root.string : "(local)"); - } - else if (r_type != R_ARM_CALL || !globals->use_blx) - { - /* Check for Arm calling Thumb function. */ - if (sym_flags == STT_ARM_TFUNC) - { - elf32_arm_to_thumb_stub (info, sym_name, input_bfd, - output_bfd, input_section, - hit_data, sym_sec, rel->r_offset, - signed_addend, value); - return bfd_reloc_ok; - } - } - - /* The ARM ELF ABI says that this reloc is computed as: S - P + A - where: - S is the address of the symbol in the relocation. - P is address of the instruction being relocated. - A is the addend (extracted from the instruction) in bytes. - - S is held in 'value'. - P is the base address of the section containing the - instruction plus the offset of the reloc into that - section, ie: - (input_section->output_section->vma + - input_section->output_offset + - rel->r_offset). - A is the addend, converted into bytes, ie: - (signed_addend * 4) - - Note: None of these operations have knowledge of the pipeline - size of the processor, thus it is up to the assembler to - encode this information into the addend. */ - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= rel->r_offset; - if (globals->use_rel) - value += (signed_addend << howto->size); - else - /* RELA addends do not have to be adjusted by howto->size. */ - value += signed_addend; - - signed_addend = value; - signed_addend >>= howto->rightshift; - - /* It is not an error for an undefined weak reference to be - out of range. Any program that branches to such a symbol - is going to crash anyway, so there is no point worrying - about getting the destination exactly right. */ - if (! h || h->root.type != bfd_link_hash_undefweak) - { - /* Perform a signed range check. */ - if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1)) - || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1))) - return bfd_reloc_overflow; - } - - addend = (value & 2); - - value = (signed_addend & howto->dst_mask) - | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask)); - - /* Set the H bit in the BLX instruction. */ - if (sym_flags == STT_ARM_TFUNC) - { - if (addend) - value |= (1 << 24); - else - value &= ~(bfd_vma)(1 << 24); - } - if (r_type == R_ARM_CALL) - { - /* Select the correct instruction (BL or BLX). */ - if (sym_flags == STT_ARM_TFUNC) - value |= (1 << 28); - else - { - value &= ~(bfd_vma)(1 << 28); - value |= (1 << 24); - } - } - break; - - case R_ARM_ABS32: - value += addend; - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - break; - - case R_ARM_REL32: - value += addend; - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - value -= (input_section->output_section->vma - + input_section->output_offset + rel->r_offset); - break; - - case R_ARM_PREL31: - value -= (input_section->output_section->vma - + input_section->output_offset + rel->r_offset); - value += signed_addend; - if (! h || h->root.type != bfd_link_hash_undefweak) - { - /* Check for overflow */ - if ((value ^ (value >> 1)) & (1 << 30)) - return bfd_reloc_overflow; - } - value &= 0x7fffffff; - value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000); - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - break; - } - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_ABS8: - value += addend; - if ((long) value > 0x7f || (long) value < -0x80) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_ABS16: - value += addend; - - if ((long) value > 0x7fff || (long) value < -0x8000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_THM_ABS5: - /* Support ldr and str instructions for the thumb. */ - if (globals->use_rel) - { - /* Need to refetch addend. */ - addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; - /* ??? Need to determine shift amount from operand size. */ - addend >>= howto->rightshift; - } - value += addend; - - /* ??? Isn't value unsigned? */ - if ((long) value > 0x1f || (long) value < -0x10) - return bfd_reloc_overflow; - - /* ??? Value needs to be properly shifted into place first. */ - value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f; - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_ARM_THM_XPC22: - case R_ARM_THM_CALL: - /* Thumb BL (branch long instruction). */ - { - bfd_vma relocation; - bfd_boolean overflow = FALSE; - bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); - bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); - bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_vma check; - bfd_signed_vma signed_check; - - /* Need to refetch the addend and squish the two 11 bit pieces - together. */ - if (globals->use_rel) - { - bfd_vma upper = upper_insn & 0x7ff; - bfd_vma lower = lower_insn & 0x7ff; - upper = (upper ^ 0x400) - 0x400; /* Sign extend. */ - addend = (upper << 12) | (lower << 1); - signed_addend = addend; - } - - if (r_type == R_ARM_THM_XPC22) - { - /* Check for Thumb to Thumb call. */ - /* FIXME: Should we translate the instruction into a BL - instruction instead ? */ - if (sym_flags == STT_ARM_TFUNC) - (*_bfd_error_handler) - (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."), - input_bfd, - h ? h->root.root.string : "(local)"); - } - else - { - /* If it is not a call to Thumb, assume call to Arm. - If it is a call relative to a section name, then it is not a - function call at all, but rather a long jump. Calls through - the PLT do not require stubs. */ - if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION - && (h == NULL || splt == NULL - || h->plt.offset == (bfd_vma) -1)) - { - if (globals->use_blx) - { - /* Convert BL to BLX. */ - lower_insn = (lower_insn & ~0x1000) | 0x0800; - } - else if (elf32_thumb_to_arm_stub - (info, sym_name, input_bfd, output_bfd, input_section, - hit_data, sym_sec, rel->r_offset, signed_addend, value)) - return bfd_reloc_ok; - else - return bfd_reloc_dangerous; - } - else if (sym_flags == STT_ARM_TFUNC && globals->use_blx) - { - /* Make sure this is a BL. */ - lower_insn |= 0x1800; - } - } - - /* Handle calls via the PLT. */ - if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) - { - value = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - if (globals->use_blx) - { - /* If the Thumb BLX instruction is available, convert the - BL to a BLX instruction to call the ARM-mode PLT entry. */ - lower_insn = (lower_insn & ~0x1000) | 0x0800; - } - else - /* Target the Thumb stub before the ARM PLT entry. */ - value -= PLT_THUMB_STUB_SIZE; - *unresolved_reloc_p = FALSE; - } - - relocation = value + signed_addend; - - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - check = relocation >> howto->rightshift; - - /* If this is a signed value, the rightshift just dropped - leading 1 bits (assuming twos complement). */ - if ((bfd_signed_vma) relocation >= 0) - signed_check = check; - else - signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); - - /* Assumes two's complement. */ - if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) - overflow = TRUE; - - if ((lower_insn & 0x1800) == 0x0800) - /* For a BLX instruction, make sure that the relocation is rounded up - to a word boundary. This follows the semantics of the instruction - which specifies that bit 1 of the target address will come from bit - 1 of the base address. */ - relocation = (relocation + 2) & ~ 3; - - /* Put RELOCATION back into the insn. */ - upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff); - lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff); - - /* Put the relocated value back in the object file: */ - bfd_put_16 (input_bfd, upper_insn, hit_data); - bfd_put_16 (input_bfd, lower_insn, hit_data + 2); - - return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); - } - break; - - case R_ARM_THM_JUMP24: - /* Thumb32 unconditional branch instruction. */ - { - bfd_vma relocation; - bfd_boolean overflow = FALSE; - bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); - bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); - bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_vma check; - bfd_signed_vma signed_check; - - /* Need to refetch the addend, reconstruct the top three bits, and glue the - two pieces together. */ - if (globals->use_rel) - { - bfd_vma S = (upper_insn & 0x0400) >> 10; - bfd_vma hi = (upper_insn & 0x03ff); - bfd_vma I1 = (lower_insn & 0x2000) >> 13; - bfd_vma I2 = (lower_insn & 0x0800) >> 11; - bfd_vma lo = (lower_insn & 0x07ff); - - I1 = !(I1 ^ S); - I2 = !(I2 ^ S); - S = !S; - - signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1); - signed_addend -= (1 << 24); /* Sign extend. */ - } - - /* ??? Should handle interworking? GCC might someday try to - use this for tail calls. */ - - relocation = value + signed_addend; - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - check = relocation >> howto->rightshift; - - /* If this is a signed value, the rightshift just dropped - leading 1 bits (assuming twos complement). */ - if ((bfd_signed_vma) relocation >= 0) - signed_check = check; - else - signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); - - /* Assumes two's complement. */ - if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) - overflow = TRUE; - - /* Put RELOCATION back into the insn. */ - { - bfd_vma S = (relocation & 0x01000000) >> 24; - bfd_vma I1 = (relocation & 0x00800000) >> 23; - bfd_vma I2 = (relocation & 0x00400000) >> 22; - bfd_vma hi = (relocation & 0x003ff000) >> 12; - bfd_vma lo = (relocation & 0x00000ffe) >> 1; - - I1 = !(I1 ^ S); - I2 = !(I2 ^ S); - - upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi; - lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo; - } - - /* Put the relocated value back in the object file: */ - bfd_put_16 (input_bfd, upper_insn, hit_data); - bfd_put_16 (input_bfd, lower_insn, hit_data + 2); - - return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); - } - - case R_ARM_THM_JUMP19: - /* Thumb32 conditional branch instruction. */ - { - bfd_vma relocation; - bfd_boolean overflow = FALSE; - bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data); - bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2); - bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_vma check; - bfd_signed_vma signed_check; - - /* Need to refetch the addend, reconstruct the top three bits, - and squish the two 11 bit pieces together. */ - if (globals->use_rel) - { - bfd_vma S = (upper_insn & 0x0400) >> 10; - bfd_vma upper = (upper_insn & 0x001f); - bfd_vma J1 = (lower_insn & 0x2000) >> 13; - bfd_vma J2 = (lower_insn & 0x0800) >> 11; - bfd_vma lower = (lower_insn & 0x07ff); - - upper |= J2 << 6; - upper |= J1 << 7; - upper |= ~S << 8; - upper -= 0x0100; /* Sign extend. */ - - addend = (upper << 12) | (lower << 1); - signed_addend = addend; - } - - /* ??? Should handle interworking? GCC might someday try to - use this for tail calls. */ - - relocation = value + signed_addend; - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - check = relocation >> howto->rightshift; - - /* If this is a signed value, the rightshift just dropped - leading 1 bits (assuming twos complement). */ - if ((bfd_signed_vma) relocation >= 0) - signed_check = check; - else - signed_check = check | ~((bfd_vma) -1 >> howto->rightshift); - - /* Assumes two's complement. */ - if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) - overflow = TRUE; - - /* Put RELOCATION back into the insn. */ - { - bfd_vma S = (relocation & 0x00100000) >> 20; - bfd_vma J2 = (relocation & 0x00080000) >> 19; - bfd_vma J1 = (relocation & 0x00040000) >> 18; - bfd_vma hi = (relocation & 0x0003f000) >> 12; - bfd_vma lo = (relocation & 0x00000ffe) >> 1; - - upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi; - lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo; - } - - /* Put the relocated value back in the object file: */ - bfd_put_16 (input_bfd, upper_insn, hit_data); - bfd_put_16 (input_bfd, lower_insn, hit_data + 2); - - return (overflow ? bfd_reloc_overflow : bfd_reloc_ok); - } - - case R_ARM_THM_JUMP11: - case R_ARM_THM_JUMP8: - case R_ARM_THM_JUMP6: - /* Thumb B (branch) instruction). */ - { - bfd_signed_vma relocation; - bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1; - bfd_signed_vma reloc_signed_min = ~ reloc_signed_max; - bfd_signed_vma signed_check; - - /* CZB cannot jump backward. */ - if (r_type == R_ARM_THM_JUMP6) - reloc_signed_min = 0; - - if (globals->use_rel) - { - /* Need to refetch addend. */ - addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask; - if (addend & ((howto->src_mask + 1) >> 1)) - { - signed_addend = -1; - signed_addend &= ~ howto->src_mask; - signed_addend |= addend; - } - else - signed_addend = addend; - /* The value in the insn has been right shifted. We need to - undo this, so that we can perform the address calculation - in terms of bytes. */ - signed_addend <<= howto->rightshift; - } - relocation = value + signed_addend; - - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - - relocation >>= howto->rightshift; - signed_check = relocation; - - if (r_type == R_ARM_THM_JUMP6) - relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3); - else - relocation &= howto->dst_mask; - relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask)); - - bfd_put_16 (input_bfd, relocation, hit_data); - - /* Assumes two's complement. */ - if (signed_check > reloc_signed_max || signed_check < reloc_signed_min) - return bfd_reloc_overflow; - - return bfd_reloc_ok; - } - - case R_ARM_ALU_PCREL7_0: - case R_ARM_ALU_PCREL15_8: - case R_ARM_ALU_PCREL23_15: - { - bfd_vma insn; - bfd_vma relocation; - - insn = bfd_get_32 (input_bfd, hit_data); - if (globals->use_rel) - { - /* Extract the addend. */ - addend = (insn & 0xff) << ((insn & 0xf00) >> 7); - signed_addend = addend; - } - relocation = value + signed_addend; - - relocation -= (input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - insn = (insn & ~0xfff) - | ((howto->bitpos << 7) & 0xf00) - | ((relocation >> howto->bitpos) & 0xff); - bfd_put_32 (input_bfd, value, hit_data); - } - return bfd_reloc_ok; - - case R_ARM_GNU_VTINHERIT: - case R_ARM_GNU_VTENTRY: - return bfd_reloc_ok; - - case R_ARM_GOTOFF32: - /* Relocation is relative to the start of the - global offset table. */ - - BFD_ASSERT (sgot != NULL); - if (sgot == NULL) - return bfd_reloc_notsupported; - - /* If we are addressing a Thumb function, we need to adjust the - address by one, so that attempts to call the function pointer will - correctly interpret it as Thumb code. */ - if (sym_flags == STT_ARM_TFUNC) - value += 1; - - /* Note that sgot->output_offset is not involved in this - calculation. We always want the start of .got. If we - define _GLOBAL_OFFSET_TABLE in a different way, as is - permitted by the ABI, we might have to change this - calculation. */ - value -= sgot->output_section->vma; - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - - case R_ARM_GOTPC: - /* Use global offset table as symbol value. */ - BFD_ASSERT (sgot != NULL); - - if (sgot == NULL) - return bfd_reloc_notsupported; - - *unresolved_reloc_p = FALSE; - value = sgot->output_section->vma; - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - - case R_ARM_GOT32: - case R_ARM_GOT_PREL: - /* Relocation is to the entry for this symbol in the - global offset table. */ - if (sgot == NULL) - return bfd_reloc_notsupported; - - if (h != NULL) - { - bfd_vma off; - bfd_boolean dyn; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - dyn = globals->root.dynamic_sections_created; - - if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) - || (info->shared - && SYMBOL_REFERENCES_LOCAL (info, h)) - || (ELF_ST_VISIBILITY (h->other) - && h->root.type == bfd_link_hash_undefweak)) - { - /* This is actually a static link, or it is a -Bsymbolic link - and the symbol is defined locally. We must initialize this - entry in the global offset table. Since the offset must - always be a multiple of 4, we use the least significant bit - to record whether we have initialized it already. - - When doing a dynamic link, we create a .rel(a).got relocation - entry to initialize the value. This is done in the - finish_dynamic_symbol routine. */ - if ((off & 1) != 0) - off &= ~1; - else - { - /* If we are addressing a Thumb function, we need to - adjust the address by one, so that attempts to - call the function pointer will correctly - interpret it as Thumb code. */ - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - - bfd_put_32 (output_bfd, value, sgot->contents + off); - h->got.offset |= 1; - } - } - else - *unresolved_reloc_p = FALSE; - - value = sgot->output_offset + off; - } - else - { - bfd_vma off; - - BFD_ASSERT (local_got_offsets != NULL && - local_got_offsets[r_symndx] != (bfd_vma) -1); - - off = local_got_offsets[r_symndx]; - - /* The offset must always be a multiple of 4. We use the - least significant bit to record whether we have already - generated the necessary reloc. */ - if ((off & 1) != 0) - off &= ~1; - else - { - /* If we are addressing a Thumb function, we need to - adjust the address by one, so that attempts to - call the function pointer will correctly - interpret it as Thumb code. */ - if (sym_flags == STT_ARM_TFUNC) - value |= 1; - - if (globals->use_rel) - bfd_put_32 (output_bfd, value, sgot->contents + off); - - if (info->shared) - { - asection * srelgot; - Elf_Internal_Rela outrel; - bfd_byte *loc; - - srelgot = (bfd_get_section_by_name - (dynobj, RELOC_SECTION (globals, ".got"))); - BFD_ASSERT (srelgot != NULL); - - outrel.r_addend = addend + value; - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + off); - outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); - loc = srelgot->contents; - loc += srelgot->reloc_count++ * RELOC_SIZE (globals); - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - } - - local_got_offsets[r_symndx] |= 1; - } - - value = sgot->output_offset + off; - } - if (r_type != R_ARM_GOT32) - value += sgot->output_section->vma; - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - - case R_ARM_TLS_LDO32: - value = value - dtpoff_base (info); - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - - case R_ARM_TLS_LDM32: - { - bfd_vma off; - - if (globals->sgot == NULL) - abort (); - - off = globals->tls_ldm_got.offset; - - if ((off & 1) != 0) - off &= ~1; - else - { - /* If we don't know the module number, create a relocation - for it. */ - if (info->shared) - { - Elf_Internal_Rela outrel; - bfd_byte *loc; - - if (globals->srelgot == NULL) - abort (); - - outrel.r_addend = 0; - outrel.r_offset = (globals->sgot->output_section->vma - + globals->sgot->output_offset + off); - outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32); - - if (globals->use_rel) - bfd_put_32 (output_bfd, outrel.r_addend, - globals->sgot->contents + off); - - loc = globals->srelgot->contents; - loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals); - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - } - else - bfd_put_32 (output_bfd, 1, globals->sgot->contents + off); - - globals->tls_ldm_got.offset |= 1; - } - - value = globals->sgot->output_section->vma + globals->sgot->output_offset + off - - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - } - - case R_ARM_TLS_GD32: - case R_ARM_TLS_IE32: - { - bfd_vma off; - int indx; - char tls_type; - - if (globals->sgot == NULL) - abort (); - - indx = 0; - if (h != NULL) - { - bfd_boolean dyn; - dyn = globals->root.dynamic_sections_created; - if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) - && (!info->shared - || !SYMBOL_REFERENCES_LOCAL (info, h))) - { - *unresolved_reloc_p = FALSE; - indx = h->dynindx; - } - off = h->got.offset; - tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type; - } - else - { - if (local_got_offsets == NULL) - abort (); - off = local_got_offsets[r_symndx]; - tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx]; - } - - if (tls_type == GOT_UNKNOWN) - abort (); - - if ((off & 1) != 0) - off &= ~1; - else - { - bfd_boolean need_relocs = FALSE; - Elf_Internal_Rela outrel; - bfd_byte *loc = NULL; - int cur_off = off; - - /* The GOT entries have not been initialized yet. Do it - now, and emit any relocations. If both an IE GOT and a - GD GOT are necessary, we emit the GD first. */ - - if ((info->shared || indx != 0) - && (h == NULL - || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT - || h->root.type != bfd_link_hash_undefweak)) - { - need_relocs = TRUE; - if (globals->srelgot == NULL) - abort (); - loc = globals->srelgot->contents; - loc += globals->srelgot->reloc_count * RELOC_SIZE (globals); - } - - if (tls_type & GOT_TLS_GD) - { - if (need_relocs) - { - outrel.r_addend = 0; - outrel.r_offset = (globals->sgot->output_section->vma - + globals->sgot->output_offset - + cur_off); - outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32); - - if (globals->use_rel) - bfd_put_32 (output_bfd, outrel.r_addend, - globals->sgot->contents + cur_off); - - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - globals->srelgot->reloc_count++; - loc += RELOC_SIZE (globals); - - if (indx == 0) - bfd_put_32 (output_bfd, value - dtpoff_base (info), - globals->sgot->contents + cur_off + 4); - else - { - outrel.r_addend = 0; - outrel.r_info = ELF32_R_INFO (indx, - R_ARM_TLS_DTPOFF32); - outrel.r_offset += 4; - - if (globals->use_rel) - bfd_put_32 (output_bfd, outrel.r_addend, - globals->sgot->contents + cur_off + 4); - - - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - globals->srelgot->reloc_count++; - loc += RELOC_SIZE (globals); - } - } - else - { - /* If we are not emitting relocations for a - general dynamic reference, then we must be in a - static link or an executable link with the - symbol binding locally. Mark it as belonging - to module 1, the executable. */ - bfd_put_32 (output_bfd, 1, - globals->sgot->contents + cur_off); - bfd_put_32 (output_bfd, value - dtpoff_base (info), - globals->sgot->contents + cur_off + 4); - } - - cur_off += 8; - } - - if (tls_type & GOT_TLS_IE) - { - if (need_relocs) - { - if (indx == 0) - outrel.r_addend = value - dtpoff_base (info); - else - outrel.r_addend = 0; - outrel.r_offset = (globals->sgot->output_section->vma - + globals->sgot->output_offset - + cur_off); - outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32); - - if (globals->use_rel) - bfd_put_32 (output_bfd, outrel.r_addend, - globals->sgot->contents + cur_off); - - SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc); - globals->srelgot->reloc_count++; - loc += RELOC_SIZE (globals); - } - else - bfd_put_32 (output_bfd, tpoff (info, value), - globals->sgot->contents + cur_off); - cur_off += 4; - } - - if (h != NULL) - h->got.offset |= 1; - else - local_got_offsets[r_symndx] |= 1; - } - - if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32) - off += 8; - value = globals->sgot->output_section->vma + globals->sgot->output_offset + off - - (input_section->output_section->vma + input_section->output_offset + rel->r_offset); - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - } - - case R_ARM_TLS_LE32: - if (info->shared) - { - (*_bfd_error_handler) - (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"), - input_bfd, input_section, - (long) rel->r_offset, howto->name); - return FALSE; - } - else - value = tpoff (info, value); - - return _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, value, - rel->r_addend); - - case R_ARM_V4BX: - if (globals->fix_v4bx) - { - bfd_vma insn = bfd_get_32 (input_bfd, hit_data); - - /* Ensure that we have a BX instruction. */ - BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10); - - /* Preserve Rm (lowest four bits) and the condition code - (highest four bits). Other bits encode MOV PC,Rm. */ - insn = (insn & 0xf000000f) | 0x01a0f000; - - bfd_put_32 (input_bfd, insn, hit_data); - } - return bfd_reloc_ok; - - default: - return bfd_reloc_notsupported; - } -} - - -static int -uleb128_size (unsigned int i) -{ - int size; - size = 1; - while (i >= 0x80) - { - i >>= 7; - size++; - } - return size; -} - -/* Return TRUE if the attribute has the default value (0/""). */ -static bfd_boolean -is_default_attr (aeabi_attribute *attr) -{ - if ((attr->type & 1) && attr->i != 0) - return FALSE; - if ((attr->type & 2) && attr->s && *attr->s) - return FALSE; - - return TRUE; -} - -/* Return the size of a single attribute. */ -static bfd_vma -eabi_attr_size(int tag, aeabi_attribute *attr) -{ - bfd_vma size; - - if (is_default_attr (attr)) - return 0; - - size = uleb128_size (tag); - if (attr->type & 1) - size += uleb128_size (attr->i); - if (attr->type & 2) - size += strlen ((char *)attr->s) + 1; - return size; -} - -/* Returns the size of the eabi object attributess section. */ -bfd_vma -elf32_arm_eabi_attr_size (bfd *abfd) -{ - bfd_vma size; - aeabi_attribute *attr; - aeabi_attribute_list *list; - int i; - - attr = elf32_arm_tdata (abfd)->known_eabi_attributes; - size = 16; /* 'A' <size> "aeabi" 0x1 <size>. */ - for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) - size += eabi_attr_size (i, &attr[i]); - - for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; - list; - list = list->next) - size += eabi_attr_size (list->tag, &list->attr); - - return size; -} - -static bfd_byte * -write_uleb128 (bfd_byte *p, unsigned int val) -{ - bfd_byte c; - do - { - c = val & 0x7f; - val >>= 7; - if (val) - c |= 0x80; - *(p++) = c; - } - while (val); - return p; -} - -/* Write attribute ATTR to butter P, and return a pointer to the following - byte. */ -static bfd_byte * -write_eabi_attribute (bfd_byte *p, int tag, aeabi_attribute *attr) -{ - /* Suppress default entries. */ - if (is_default_attr(attr)) - return p; - - p = write_uleb128 (p, tag); - if (attr->type & 1) - p = write_uleb128 (p, attr->i); - if (attr->type & 2) - { - int len; - - len = strlen (attr->s) + 1; - memcpy (p, attr->s, len); - p += len; - } - - return p; -} - -/* Write the contents of the eabi attributes section to p. */ -void -elf32_arm_set_eabi_attr_contents (bfd *abfd, bfd_byte *contents, bfd_vma size) -{ - bfd_byte *p; - aeabi_attribute *attr; - aeabi_attribute_list *list; - int i; - - p = contents; - *(p++) = 'A'; - bfd_put_32 (abfd, size - 1, p); - p += 4; - memcpy (p, "aeabi", 6); - p += 6; - *(p++) = Tag_File; - bfd_put_32 (abfd, size - 11, p); - p += 4; - - attr = elf32_arm_tdata (abfd)->known_eabi_attributes; - for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) - p = write_eabi_attribute (p, i, &attr[i]); - - for (list = elf32_arm_tdata (abfd)->other_eabi_attributes; - list; - list = list->next) - p = write_eabi_attribute (p, list->tag, &list->attr); -} - -/* Override final_link to handle EABI object attribute sections. */ - -static bfd_boolean -elf32_arm_bfd_final_link (bfd *abfd, struct bfd_link_info *info) -{ - asection *o; - struct bfd_link_order *p; - asection *attr_section = NULL; - bfd_byte *contents; - bfd_vma size = 0; - - /* elf32_arm_merge_private_bfd_data will already have merged the - object attributes. Remove the input sections from the link, and set - the contents of the output secton. */ - for (o = abfd->sections; o != NULL; o = o->next) - { - if (strcmp (o->name, ".ARM.attributes") == 0) - { - for (p = o->map_head.link_order; p != NULL; p = p->next) - { - asection *input_section; - - if (p->type != bfd_indirect_link_order) - continue; - input_section = p->u.indirect.section; - /* Hack: reset the SEC_HAS_CONTENTS flag so that - elf_link_input_bfd ignores this section. */ - input_section->flags &= ~SEC_HAS_CONTENTS; - } - - size = elf32_arm_eabi_attr_size (abfd); - bfd_set_section_size (abfd, o, size); - attr_section = o; - /* Skip this section later on. */ - o->map_head.link_order = NULL; - } - } - /* Invoke the ELF linker to do all the work. */ - if (!bfd_elf_final_link (abfd, info)) - return FALSE; - - if (attr_section) - { - contents = bfd_malloc(size); - if (contents == NULL) - return FALSE; - elf32_arm_set_eabi_attr_contents (abfd, contents, size); - bfd_set_section_contents (abfd, attr_section, contents, 0, size); - free (contents); - } - return TRUE; -} - - -/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */ -static void -arm_add_to_rel (bfd * abfd, - bfd_byte * address, - reloc_howto_type * howto, - bfd_signed_vma increment) -{ - bfd_signed_vma addend; - - if (howto->type == R_ARM_THM_CALL) - { - int upper_insn, lower_insn; - int upper, lower; - - upper_insn = bfd_get_16 (abfd, address); - lower_insn = bfd_get_16 (abfd, address + 2); - upper = upper_insn & 0x7ff; - lower = lower_insn & 0x7ff; - - addend = (upper << 12) | (lower << 1); - addend += increment; - addend >>= 1; - - upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff); - lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff); - - bfd_put_16 (abfd, (bfd_vma) upper_insn, address); - bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2); - } - else - { - bfd_vma contents; - - contents = bfd_get_32 (abfd, address); - - /* Get the (signed) value from the instruction. */ - addend = contents & howto->src_mask; - if (addend & ((howto->src_mask + 1) >> 1)) - { - bfd_signed_vma mask; - - mask = -1; - mask &= ~ howto->src_mask; - addend |= mask; - } - - /* Add in the increment, (which is a byte value). */ - switch (howto->type) - { - default: - addend += increment; - break; - - case R_ARM_PC24: - case R_ARM_PLT32: - case R_ARM_CALL: - case R_ARM_JUMP24: - addend <<= howto->size; - addend += increment; - - /* Should we check for overflow here ? */ - - /* Drop any undesired bits. */ - addend >>= howto->rightshift; - break; - } - - contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask); - - bfd_put_32 (abfd, contents, address); - } -} - -#define IS_ARM_TLS_RELOC(R_TYPE) \ - ((R_TYPE) == R_ARM_TLS_GD32 \ - || (R_TYPE) == R_ARM_TLS_LDO32 \ - || (R_TYPE) == R_ARM_TLS_LDM32 \ - || (R_TYPE) == R_ARM_TLS_DTPOFF32 \ - || (R_TYPE) == R_ARM_TLS_DTPMOD32 \ - || (R_TYPE) == R_ARM_TLS_TPOFF32 \ - || (R_TYPE) == R_ARM_TLS_LE32 \ - || (R_TYPE) == R_ARM_TLS_IE32) - -/* Relocate an ARM ELF section. */ -static bfd_boolean -elf32_arm_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) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - const char *name; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - if (info->relocatable && !globals->use_rel) - return TRUE; - - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - reloc_howto_type * howto; - unsigned long r_symndx; - Elf_Internal_Sym * sym; - asection * sec; - struct elf_link_hash_entry * h; - bfd_vma relocation; - bfd_reloc_status_type r; - arelent bfd_reloc; - char sym_type; - bfd_boolean unresolved_reloc = FALSE; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - r_type = arm_real_reloc_type (globals, r_type); - - if ( r_type == R_ARM_GNU_VTENTRY - || r_type == R_ARM_GNU_VTINHERIT) - continue; - - bfd_reloc.howto = elf32_arm_howto_from_type (r_type); - howto = bfd_reloc.howto; - - if (info->relocatable && globals->use_rel) - { - /* This is a relocatable link. We don't have to change - anything, unless the reloc is against a section symbol, - in which case we have to adjust according to where the - section symbol winds up in the output section. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sec = local_sections[r_symndx]; - arm_add_to_rel (input_bfd, contents + rel->r_offset, - howto, - (bfd_signed_vma) (sec->output_offset - + sym->st_value)); - } - } - - continue; - } - - /* This is a final link. */ - h = NULL; - sym = NULL; - sec = NULL; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sym_type = ELF32_ST_TYPE (sym->st_info); - sec = local_sections[r_symndx]; - if (globals->use_rel) - { - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); - if ((sec->flags & SEC_MERGE) - && ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - asection *msec; - bfd_vma addend, value; - - if (howto->rightshift) - { - (*_bfd_error_handler) - (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"), - input_bfd, input_section, - (long) rel->r_offset, howto->name); - return FALSE; - } - - value = bfd_get_32 (input_bfd, contents + rel->r_offset); - - /* Get the (signed) value from the instruction. */ - addend = value & howto->src_mask; - if (addend & ((howto->src_mask + 1) >> 1)) - { - bfd_signed_vma mask; - - mask = -1; - mask &= ~ howto->src_mask; - addend |= mask; - } - msec = sec; - addend = - _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - - relocation; - addend += msec->output_section->vma + msec->output_offset; - value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask); - bfd_put_32 (input_bfd, value, contents + rel->r_offset); - } - } - else - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - } - else - { - bfd_boolean warned; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - - sym_type = h->type; - } - - if (h != NULL) - name = h->root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - if (r_symndx != 0 - && r_type != R_ARM_NONE - && (h == NULL - || h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS)) - { - (*_bfd_error_handler) - ((sym_type == STT_TLS - ? _("%B(%A+0x%lx): %s used with TLS symbol %s") - : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")), - input_bfd, - input_section, - (long) rel->r_offset, - howto->name, - name); - } - - r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, rel, - relocation, info, sec, name, - (h ? ELF_ST_TYPE (h->type) : - ELF_ST_TYPE (sym->st_info)), h, - &unresolved_reloc); - - /* 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->def_dynamic)) - { - (*_bfd_error_handler) - (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), - input_bfd, - input_section, - (long) rel->r_offset, - howto->name, - h->root.root.string); - return FALSE; - } - - if (r != bfd_reloc_ok) - { - const char * msg = (const char *) 0; - - switch (r) - { - case bfd_reloc_overflow: - /* If the overflowing reloc was to an undefined symbol, - we have already printed one error message and there - is no point complaining again. */ - if ((! h || - h->root.type != bfd_link_hash_undefined) - && (!((*info->callbacks->reloc_overflow) - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset)))) - return FALSE; - break; - - case bfd_reloc_undefined: - if (!((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - goto common_error; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - goto common_error; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous error"); - goto common_error; - - default: - msg = _("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - } - } - - return TRUE; -} - -/* Allocate/find an object attribute. */ -static aeabi_attribute * -elf32_arm_new_eabi_attr (bfd *abfd, int tag) -{ - aeabi_attribute *attr; - aeabi_attribute_list *list; - aeabi_attribute_list *p; - aeabi_attribute_list **lastp; - - - if (tag < NUM_KNOWN_ATTRIBUTES) - { - /* Knwon tags are preallocated. */ - attr = &elf32_arm_tdata (abfd)->known_eabi_attributes[tag]; - } - else - { - /* Create a new tag. */ - list = (aeabi_attribute_list *) - bfd_alloc (abfd, sizeof (aeabi_attribute_list)); - memset (list, 0, sizeof (aeabi_attribute_list)); - list->tag = tag; - /* Keep the tag list in order. */ - lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; - for (p = *lastp; p; p = p->next) - { - if (tag < p->tag) - break; - lastp = &p->next; - } - list->next = *lastp; - *lastp = list; - attr = &list->attr; - } - - return attr; -} - -int -elf32_arm_get_eabi_attr_int (bfd *abfd, int tag) -{ - aeabi_attribute_list *p; - - if (tag < NUM_KNOWN_ATTRIBUTES) - { - /* Knwon tags are preallocated. */ - return elf32_arm_tdata (abfd)->known_eabi_attributes[tag].i; - } - else - { - for (p = elf32_arm_tdata (abfd)->other_eabi_attributes; - p; - p = p->next) - { - if (tag == p->tag) - return p->attr.i; - if (tag < p->tag) - break; - } - return 0; - } -} - -void -elf32_arm_add_eabi_attr_int (bfd *abfd, int tag, unsigned int i) -{ - aeabi_attribute *attr; - - attr = elf32_arm_new_eabi_attr (abfd, tag); - attr->type = 1; - attr->i = i; -} - -static char * -attr_strdup (bfd *abfd, const char * s) -{ - char * p; - int len; - - len = strlen (s) + 1; - p = (char *)bfd_alloc(abfd, len); - return memcpy (p, s, len); -} - -void -elf32_arm_add_eabi_attr_string (bfd *abfd, int tag, const char *s) -{ - aeabi_attribute *attr; - - attr = elf32_arm_new_eabi_attr (abfd, tag); - attr->type = 2; - attr->s = attr_strdup (abfd, s); -} - -void -elf32_arm_add_eabi_attr_compat (bfd *abfd, unsigned int i, const char *s) -{ - aeabi_attribute_list *list; - aeabi_attribute_list *p; - aeabi_attribute_list **lastp; - - list = (aeabi_attribute_list *) - bfd_alloc (abfd, sizeof (aeabi_attribute_list)); - memset (list, 0, sizeof (aeabi_attribute_list)); - list->tag = Tag_compatibility; - list->attr.type = 3; - list->attr.i = i; - list->attr.s = attr_strdup (abfd, s); - - lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes; - for (p = *lastp; p; p = p->next) - { - int cmp; - if (p->tag != Tag_compatibility) - break; - cmp = strcmp(s, p->attr.s); - if (cmp < 0 || (cmp == 0 && i < p->attr.i)) - break; - lastp = &p->next; - } - list->next = *lastp; - *lastp = list; -} - -/* Set the right machine number. */ - -static bfd_boolean -elf32_arm_object_p (bfd *abfd) -{ - unsigned int mach; - - mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION); - - if (mach != bfd_mach_arm_unknown) - bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); - - else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT) - bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312); - - else - bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach); - - return TRUE; -} - -/* Function to keep ARM specific flags in the ELF header. */ - -static bfd_boolean -elf32_arm_set_private_flags (bfd *abfd, flagword flags) -{ - if (elf_flags_init (abfd) - && elf_elfheader (abfd)->e_flags != flags) - { - if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN) - { - if (flags & EF_ARM_INTERWORK) - (*_bfd_error_handler) - (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"), - abfd); - else - _bfd_error_handler - (_("Warning: Clearing the interworking flag of %B due to outside request"), - abfd); - } - } - else - { - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - } - - return TRUE; -} - -/* Copy the eabi object attribute from IBFD to OBFD. */ -static void -copy_eabi_attributes (bfd *ibfd, bfd *obfd) -{ - aeabi_attribute *in_attr; - aeabi_attribute *out_attr; - aeabi_attribute_list *list; - int i; - - in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; - out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; - for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) - { - out_attr->i = in_attr->i; - if (in_attr->s && *in_attr->s) - out_attr->s = attr_strdup (obfd, in_attr->s); - in_attr++; - out_attr++; - } - - for (list = elf32_arm_tdata (ibfd)->other_eabi_attributes; - list; - list = list->next) - { - in_attr = &list->attr; - switch (in_attr->type) - { - case 1: - elf32_arm_add_eabi_attr_int (obfd, list->tag, in_attr->i); - break; - case 2: - elf32_arm_add_eabi_attr_string (obfd, list->tag, in_attr->s); - break; - case 3: - elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); - break; - default: - abort(); - } - } -} - - -/* Copy backend specific data from one object module to another. */ - -static bfd_boolean -elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - flagword in_flags; - flagword out_flags; - - if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - in_flags = elf_elfheader (ibfd)->e_flags; - out_flags = elf_elfheader (obfd)->e_flags; - - if (elf_flags_init (obfd) - && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN - && in_flags != out_flags) - { - /* Cannot mix APCS26 and APCS32 code. */ - if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) - return FALSE; - - /* Cannot mix float APCS and non-float APCS code. */ - if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) - return FALSE; - - /* If the src and dest have different interworking flags - then turn off the interworking bit. */ - if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) - { - if (out_flags & EF_ARM_INTERWORK) - _bfd_error_handler - (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"), - obfd, ibfd); - - in_flags &= ~EF_ARM_INTERWORK; - } - - /* Likewise for PIC, though don't warn for this case. */ - if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC)) - in_flags &= ~EF_ARM_PIC; - } - - elf_elfheader (obfd)->e_flags = in_flags; - elf_flags_init (obfd) = TRUE; - - /* Also copy the EI_OSABI field. */ - elf_elfheader (obfd)->e_ident[EI_OSABI] = - elf_elfheader (ibfd)->e_ident[EI_OSABI]; - - /* Copy EABI object attributes. */ - copy_eabi_attributes (ibfd, obfd); - - return TRUE; -} - -/* Values for Tag_ABI_PCS_R9_use. */ -enum -{ - AEABI_R9_V6, - AEABI_R9_SB, - AEABI_R9_TLS, - AEABI_R9_unused -}; - -/* Values for Tag_ABI_PCS_RW_data. */ -enum -{ - AEABI_PCS_RW_data_absolute, - AEABI_PCS_RW_data_PCrel, - AEABI_PCS_RW_data_SBrel, - AEABI_PCS_RW_data_unused -}; - -/* Values for Tag_ABI_enum_size. */ -enum -{ - AEABI_enum_unused, - AEABI_enum_short, - AEABI_enum_wide, - AEABI_enum_forced_wide -}; - -/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there - are conflicting attributes. */ -static bfd_boolean -elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd) -{ - aeabi_attribute *in_attr; - aeabi_attribute *out_attr; - aeabi_attribute_list *in_list; - aeabi_attribute_list *out_list; - /* Some tags have 0 = don't care, 1 = strong requirement, - 2 = weak requirement. */ - static const int order_312[3] = {3, 1, 2}; - int i; - - if (!elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i) - { - /* This is the first object. Copy the attributes. */ - copy_eabi_attributes (ibfd, obfd); - return TRUE; - } - - /* Use the Tag_null value to indicate the attributes have been - initialized. */ - elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i = 1; - - in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes; - out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes; - /* This needs to happen before Tag_ABI_FP_number_model is merged. */ - if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i) - { - /* Ignore mismatches if teh object doesn't use floating point. */ - if (out_attr[Tag_ABI_FP_number_model].i == 0) - out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i; - else if (in_attr[Tag_ABI_FP_number_model].i != 0) - { - _bfd_error_handler - (_("ERROR: %B uses VFP register arguments, %B does not"), - ibfd, obfd); - return FALSE; - } - } - - for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++) - { - /* Merge this attribute with existing attributes. */ - switch (i) - { - case Tag_CPU_raw_name: - case Tag_CPU_name: - /* Use whichever has the greatest architecture requirements. */ - if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i) - out_attr[i].s = attr_strdup(obfd, in_attr[i].s); - break; - - case Tag_ABI_optimization_goals: - case Tag_ABI_FP_optimization_goals: - /* Use the first value seen. */ - break; - - case Tag_CPU_arch: - case Tag_ARM_ISA_use: - case Tag_THUMB_ISA_use: - case Tag_VFP_arch: - case Tag_WMMX_arch: - case Tag_NEON_arch: - /* ??? Do NEON and WMMX conflict? */ - case Tag_ABI_FP_rounding: - case Tag_ABI_FP_denormal: - case Tag_ABI_FP_exceptions: - case Tag_ABI_FP_user_exceptions: - case Tag_ABI_FP_number_model: - case Tag_ABI_align8_preserved: - case Tag_ABI_HardFP_use: - /* Use the largest value specified. */ - if (in_attr[i].i > out_attr[i].i) - out_attr[i].i = in_attr[i].i; - break; - - case Tag_CPU_arch_profile: - /* Warn if conflicting architecture profiles used. */ - if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i) - { - _bfd_error_handler - (_("ERROR: %B: Conflicting architecture profiles %c/%c"), - ibfd, in_attr[i].i, out_attr[i].i); - return FALSE; - } - if (in_attr[i].i) - out_attr[i].i = in_attr[i].i; - break; - case Tag_PCS_config: - if (out_attr[i].i == 0) - out_attr[i].i = in_attr[i].i; - else if (in_attr[i].i != 0 && out_attr[i].i != 0) - { - /* It's sometimes ok to mix different configs, so this is only - a warning. */ - _bfd_error_handler - (_("Warning: %B: Conflicting platform configuration"), ibfd); - } - break; - case Tag_ABI_PCS_R9_use: - if (out_attr[i].i != AEABI_R9_unused - && in_attr[i].i != AEABI_R9_unused) - { - _bfd_error_handler - (_("ERROR: %B: Conflicting use of R9"), ibfd); - return FALSE; - } - if (out_attr[i].i == AEABI_R9_unused) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_PCS_RW_data: - if (in_attr[i].i == AEABI_PCS_RW_data_SBrel - && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB - && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused) - { - _bfd_error_handler - (_("ERROR: %B: SB relative addressing conflicts with use of R9"), - ibfd); - return FALSE; - } - /* Use the smallest value specified. */ - if (in_attr[i].i < out_attr[i].i) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_PCS_RO_data: - /* Use the smallest value specified. */ - if (in_attr[i].i < out_attr[i].i) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_PCS_GOT_use: - if (in_attr[i].i > 2 || out_attr[i].i > 2 - || order_312[in_attr[i].i] < order_312[out_attr[i].i]) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_PCS_wchar_t: - if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i) - { - _bfd_error_handler - (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd); - return FALSE; - } - if (in_attr[i].i) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_align8_needed: - /* ??? Check against Tag_ABI_align8_preserved. */ - if (in_attr[i].i > 2 || out_attr[i].i > 2 - || order_312[in_attr[i].i] < order_312[out_attr[i].i]) - out_attr[i].i = in_attr[i].i; - break; - case Tag_ABI_enum_size: - if (in_attr[i].i != AEABI_enum_unused) - { - if (out_attr[i].i == AEABI_enum_unused - || out_attr[i].i == AEABI_enum_forced_wide) - { - /* The existing object is compatible with anything. - Use whatever requirements the new object has. */ - out_attr[i].i = in_attr[i].i; - } - else if (in_attr[i].i != AEABI_enum_forced_wide - && out_attr[i].i != in_attr[i].i) - { - _bfd_error_handler - (_("ERROR: %B: Conflicting enum sizes"), ibfd); - } - } - break; - case Tag_ABI_VFP_args: - /* Aready done. */ - break; - case Tag_ABI_WMMX_args: - if (in_attr[i].i != out_attr[i].i) - { - _bfd_error_handler - (_("ERROR: %B uses iWMMXt register arguments, %B does not"), - ibfd, obfd); - return FALSE; - } - break; - default: /* All known attributes should be explicitly covered. */ - abort (); - } - } - - in_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; - out_list = elf32_arm_tdata (ibfd)->other_eabi_attributes; - while (in_list && in_list->tag == Tag_compatibility) - { - in_attr = &in_list->attr; - if (in_attr->i == 0) - continue; - if (in_attr->i == 1) - { - _bfd_error_handler - (_("ERROR: %B: Must be processed by '%s' toolchain"), - ibfd, in_attr->s); - return FALSE; - } - if (!out_list || out_list->tag != Tag_compatibility - || strcmp (in_attr->s, out_list->attr.s) != 0) - { - /* Add this compatibility tag to the output. */ - elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s); - continue; - } - out_attr = &out_list->attr; - /* Check all the input tags with the same identifier. */ - for (;;) - { - if (out_list->tag != Tag_compatibility - || in_attr->i != out_attr->i - || strcmp (in_attr->s, out_attr->s) != 0) - { - _bfd_error_handler - (_("ERROR: %B: Incompatible object tag '%s':%d"), - ibfd, in_attr->s, in_attr->i); - return FALSE; - } - in_list = in_list->next; - if (in_list->tag != Tag_compatibility - || strcmp (in_attr->s, in_list->attr.s) != 0) - break; - in_attr = &in_list->attr; - out_list = out_list->next; - if (out_list) - out_attr = &out_list->attr; - } - - /* Check the output doesn't have extra tags with this identifier. */ - if (out_list && out_list->tag == Tag_compatibility - && strcmp (in_attr->s, out_list->attr.s) == 0) - { - _bfd_error_handler - (_("ERROR: %B: Incompatible object tag '%s':%d"), - ibfd, in_attr->s, out_list->attr.i); - return FALSE; - } - } - - for (; in_list; in_list = in_list->next) - { - if ((in_list->tag & 128) < 64) - { - _bfd_error_handler - (_("Warning: %B: Unknown EABI object attribute %d"), - ibfd, in_list->tag); - break; - } - } - return TRUE; -} - - -/* Return TRUE if the two EABI versions are incompatible. */ - -static bfd_boolean -elf32_arm_versions_compatible (unsigned iver, unsigned over) -{ - /* v4 and v5 are the same spec before and after it was released, - so allow mixing them. */ - if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5) - || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4)) - return TRUE; - - return (iver == over); -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -static bfd_boolean -elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd) -{ - flagword out_flags; - flagword in_flags; - bfd_boolean flags_compatible = TRUE; - asection *sec; - - /* Check if we have the same endianess. */ - if (! _bfd_generic_verify_endian_match (ibfd, obfd)) - return FALSE; - - if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - if (!elf32_arm_merge_eabi_attributes (ibfd, obfd)) - return FALSE; - - /* The input BFD must have had its flags initialised. */ - /* The following seems bogus to me -- The flags are initialized in - the assembler but I don't think an elf_flags_init field is - written into the object. */ - /* BFD_ASSERT (elf_flags_init (ibfd)); */ - - in_flags = elf_elfheader (ibfd)->e_flags; - out_flags = elf_elfheader (obfd)->e_flags; - - if (!elf_flags_init (obfd)) - { - /* If the input is the default architecture and had the default - flags then do not bother setting the flags for the output - architecture, instead allow future merges to do this. If no - future merges ever set these flags then they will retain their - uninitialised values, which surprise surprise, correspond - to the default values. */ - if (bfd_get_arch_info (ibfd)->the_default - && elf_elfheader (ibfd)->e_flags == 0) - return TRUE; - - elf_flags_init (obfd) = TRUE; - elf_elfheader (obfd)->e_flags = in_flags; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_arch_info (obfd)->the_default) - return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); - - return TRUE; - } - - /* Determine what should happen if the input ARM architecture - does not match the output ARM architecture. */ - if (! bfd_arm_merge_machines (ibfd, obfd)) - return FALSE; - - /* Identical flags must be compatible. */ - if (in_flags == out_flags) - return TRUE; - - /* Check to see if the input BFD actually contains any sections. If - not, its flags may not have been initialised either, but it - cannot actually cause any incompatiblity. Do not short-circuit - dynamic objects; their section list may be emptied by - elf_link_add_object_symbols. - - Also check to see if there are no code sections in the input. - In this case there is no need to check for code specific flags. - XXX - do we need to worry about floating-point format compatability - in data sections ? */ - if (!(ibfd->flags & DYNAMIC)) - { - bfd_boolean null_input_bfd = TRUE; - bfd_boolean only_data_sections = TRUE; - - for (sec = ibfd->sections; sec != NULL; sec = sec->next) - { - /* Ignore synthetic glue sections. */ - if (strcmp (sec->name, ".glue_7") - && strcmp (sec->name, ".glue_7t")) - { - if ((bfd_get_section_flags (ibfd, sec) - & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) - == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) - only_data_sections = FALSE; - - null_input_bfd = FALSE; - break; - } - } - - if (null_input_bfd || only_data_sections) - return TRUE; - } - - /* Complain about various flag mismatches. */ - if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags), - EF_ARM_EABI_VERSION (out_flags))) - { - _bfd_error_handler - (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"), - ibfd, obfd, - (in_flags & EF_ARM_EABIMASK) >> 24, - (out_flags & EF_ARM_EABIMASK) >> 24); - return FALSE; - } - - /* Not sure what needs to be checked for EABI versions >= 1. */ - /* VxWorks libraries do not use these flags. */ - if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed - && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed - && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN) - { - if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26)) - { - _bfd_error_handler - (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"), - ibfd, obfd, - in_flags & EF_ARM_APCS_26 ? 26 : 32, - out_flags & EF_ARM_APCS_26 ? 26 : 32); - flags_compatible = FALSE; - } - - if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT)) - { - if (in_flags & EF_ARM_APCS_FLOAT) - _bfd_error_handler - (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"), - ibfd, obfd); - else - _bfd_error_handler - (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"), - ibfd, obfd); - - flags_compatible = FALSE; - } - - if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT)) - { - if (in_flags & EF_ARM_VFP_FLOAT) - _bfd_error_handler - (_("ERROR: %B uses VFP instructions, whereas %B does not"), - ibfd, obfd); - else - _bfd_error_handler - (_("ERROR: %B uses FPA instructions, whereas %B does not"), - ibfd, obfd); - - flags_compatible = FALSE; - } - - if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT)) - { - if (in_flags & EF_ARM_MAVERICK_FLOAT) - _bfd_error_handler - (_("ERROR: %B uses Maverick instructions, whereas %B does not"), - ibfd, obfd); - else - _bfd_error_handler - (_("ERROR: %B does not use Maverick instructions, whereas %B does"), - ibfd, obfd); - - flags_compatible = FALSE; - } - -#ifdef EF_ARM_SOFT_FLOAT - if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT)) - { - /* We can allow interworking between code that is VFP format - layout, and uses either soft float or integer regs for - passing floating point arguments and results. We already - know that the APCS_FLOAT flags match; similarly for VFP - flags. */ - if ((in_flags & EF_ARM_APCS_FLOAT) != 0 - || (in_flags & EF_ARM_VFP_FLOAT) == 0) - { - if (in_flags & EF_ARM_SOFT_FLOAT) - _bfd_error_handler - (_("ERROR: %B uses software FP, whereas %B uses hardware FP"), - ibfd, obfd); - else - _bfd_error_handler - (_("ERROR: %B uses hardware FP, whereas %B uses software FP"), - ibfd, obfd); - - flags_compatible = FALSE; - } - } -#endif - - /* Interworking mismatch is only a warning. */ - if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK)) - { - if (in_flags & EF_ARM_INTERWORK) - { - _bfd_error_handler - (_("Warning: %B supports interworking, whereas %B does not"), - ibfd, obfd); - } - else - { - _bfd_error_handler - (_("Warning: %B does not support interworking, whereas %B does"), - ibfd, obfd); - } - } - } - - return flags_compatible; -} - -/* Display the flags field. */ - -static bfd_boolean -elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr) -{ - FILE * file = (FILE *) ptr; - unsigned long flags; - - BFD_ASSERT (abfd != NULL && ptr != NULL); - - /* Print normal ELF private data. */ - _bfd_elf_print_private_bfd_data (abfd, ptr); - - flags = elf_elfheader (abfd)->e_flags; - /* Ignore init flag - it may not be set, despite the flags field - containing valid data. */ - - /* xgettext:c-format */ - fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); - - switch (EF_ARM_EABI_VERSION (flags)) - { - case EF_ARM_EABI_UNKNOWN: - /* The following flag bits are GNU extensions and not part of the - official ARM ELF extended ABI. Hence they are only decoded if - the EABI version is not set. */ - if (flags & EF_ARM_INTERWORK) - fprintf (file, _(" [interworking enabled]")); - - if (flags & EF_ARM_APCS_26) - fprintf (file, " [APCS-26]"); - else - fprintf (file, " [APCS-32]"); - - if (flags & EF_ARM_VFP_FLOAT) - fprintf (file, _(" [VFP float format]")); - else if (flags & EF_ARM_MAVERICK_FLOAT) - fprintf (file, _(" [Maverick float format]")); - else - fprintf (file, _(" [FPA float format]")); - - if (flags & EF_ARM_APCS_FLOAT) - fprintf (file, _(" [floats passed in float registers]")); - - if (flags & EF_ARM_PIC) - fprintf (file, _(" [position independent]")); - - if (flags & EF_ARM_NEW_ABI) - fprintf (file, _(" [new ABI]")); - - if (flags & EF_ARM_OLD_ABI) - fprintf (file, _(" [old ABI]")); - - if (flags & EF_ARM_SOFT_FLOAT) - fprintf (file, _(" [software FP]")); - - flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT - | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI - | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT - | EF_ARM_MAVERICK_FLOAT); - break; - - case EF_ARM_EABI_VER1: - fprintf (file, _(" [Version1 EABI]")); - - if (flags & EF_ARM_SYMSARESORTED) - fprintf (file, _(" [sorted symbol table]")); - else - fprintf (file, _(" [unsorted symbol table]")); - - flags &= ~ EF_ARM_SYMSARESORTED; - break; - - case EF_ARM_EABI_VER2: - fprintf (file, _(" [Version2 EABI]")); - - if (flags & EF_ARM_SYMSARESORTED) - fprintf (file, _(" [sorted symbol table]")); - else - fprintf (file, _(" [unsorted symbol table]")); - - if (flags & EF_ARM_DYNSYMSUSESEGIDX) - fprintf (file, _(" [dynamic symbols use segment index]")); - - if (flags & EF_ARM_MAPSYMSFIRST) - fprintf (file, _(" [mapping symbols precede others]")); - - flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX - | EF_ARM_MAPSYMSFIRST); - break; - - case EF_ARM_EABI_VER3: - fprintf (file, _(" [Version3 EABI]")); - break; - - case EF_ARM_EABI_VER4: - fprintf (file, _(" [Version4 EABI]")); - goto eabi; - - case EF_ARM_EABI_VER5: - fprintf (file, _(" [Version5 EABI]")); - eabi: - if (flags & EF_ARM_BE8) - fprintf (file, _(" [BE8]")); - - if (flags & EF_ARM_LE8) - fprintf (file, _(" [LE8]")); - - flags &= ~(EF_ARM_LE8 | EF_ARM_BE8); - break; - - default: - fprintf (file, _(" <EABI version unrecognised>")); - break; - } - - flags &= ~ EF_ARM_EABIMASK; - - if (flags & EF_ARM_RELEXEC) - fprintf (file, _(" [relocatable executable]")); - - if (flags & EF_ARM_HASENTRY) - fprintf (file, _(" [has entry point]")); - - flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY); - - if (flags) - fprintf (file, _("<Unrecognised flag bits set>")); - - fputc ('\n', file); - - return TRUE; -} - -static int -elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type) -{ - switch (ELF_ST_TYPE (elf_sym->st_info)) - { - case STT_ARM_TFUNC: - return ELF_ST_TYPE (elf_sym->st_info); - - case STT_ARM_16BIT: - /* If the symbol is not an object, return the STT_ARM_16BIT flag. - This allows us to distinguish between data used by Thumb instructions - and non-data (which is probably code) inside Thumb regions of an - executable. */ - if (type != STT_OBJECT && type != STT_TLS) - return ELF_ST_TYPE (elf_sym->st_info); - break; - - default: - break; - } - - return type; -} - -static asection * -elf32_arm_gc_mark_hook (asection * sec, - struct bfd_link_info * info ATTRIBUTE_UNUSED, - Elf_Internal_Rela * rel, - struct elf_link_hash_entry * h, - Elf_Internal_Sym * sym) -{ - if (h != NULL) - { - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_ARM_GNU_VTINHERIT: - case R_ARM_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - case bfd_link_hash_defined: - case bfd_link_hash_defweak: - return h->root.u.def.section; - - case bfd_link_hash_common: - return h->root.u.c.p->section; - - default: - break; - } - } - } - else - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - return NULL; -} - -/* Update the got entry reference counts for the section being removed. */ - -static bfd_boolean -elf32_arm_gc_sweep_hook (bfd * abfd, - struct bfd_link_info * info, - asection * sec, - const Elf_Internal_Rela * relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_signed_vma *local_got_refcounts; - const Elf_Internal_Rela *rel, *relend; - struct elf32_arm_link_hash_table * globals; - - globals = elf32_arm_hash_table (info); - - elf_section_data (sec)->local_dynrel = NULL; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - local_got_refcounts = elf_local_got_refcounts (abfd); - - relend = relocs + sec->reloc_count; - for (rel = relocs; rel < relend; rel++) - { - unsigned long r_symndx; - struct elf_link_hash_entry *h = NULL; - int r_type; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - - r_type = ELF32_R_TYPE (rel->r_info); - r_type = arm_real_reloc_type (globals, r_type); - switch (r_type) - { - case R_ARM_GOT32: - case R_ARM_GOT_PREL: - case R_ARM_TLS_GD32: - case R_ARM_TLS_IE32: - if (h != NULL) - { - if (h->got.refcount > 0) - h->got.refcount -= 1; - } - else if (local_got_refcounts != NULL) - { - if (local_got_refcounts[r_symndx] > 0) - local_got_refcounts[r_symndx] -= 1; - } - break; - - case R_ARM_TLS_LDM32: - elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1; - break; - - case R_ARM_ABS32: - case R_ARM_REL32: - case R_ARM_PC24: - case R_ARM_PLT32: - case R_ARM_CALL: - case R_ARM_JUMP24: - case R_ARM_PREL31: - case R_ARM_THM_CALL: - /* Should the interworking branches be here also? */ - - if (h != NULL) - { - struct elf32_arm_link_hash_entry *eh; - struct elf32_arm_relocs_copied **pp; - struct elf32_arm_relocs_copied *p; - - eh = (struct elf32_arm_link_hash_entry *) h; - - if (h->plt.refcount > 0) - { - h->plt.refcount -= 1; - if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL) - eh->plt_thumb_refcount--; - } - - if (r_type == R_ARM_ABS32 - || r_type == R_ARM_REL32) - { - for (pp = &eh->relocs_copied; (p = *pp) != NULL; - pp = &p->next) - if (p->section == sec) - { - p->count -= 1; - if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32) - p->pc_count -= 1; - if (p->count == 0) - *pp = p->next; - break; - } - } - } - break; - - default: - break; - } - } - - return TRUE; -} - -/* Look through the relocs for a section during the first phase. */ - -static bfd_boolean -elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info, - asection *sec, const Elf_Internal_Rela *relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **sym_hashes_end; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - bfd *dynobj; - asection *sreloc; - bfd_vma *local_got_offsets; - struct elf32_arm_link_hash_table *htab; - - if (info->relocatable) - return TRUE; - - htab = elf32_arm_hash_table (info); - sreloc = NULL; - - /* Create dynamic sections for relocatable executables so that we can - copy relocations. */ - if (htab->root.is_relocatable_executable - && ! htab->root.dynamic_sections_created) - { - if (! _bfd_elf_link_create_dynamic_sections (abfd, info)) - return FALSE; - } - - dynobj = elf_hash_table (info)->dynobj; - local_got_offsets = elf_local_got_offsets (abfd); - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - sym_hashes_end = sym_hashes - + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); - - if (!elf_bad_symtab (abfd)) - sym_hashes_end -= symtab_hdr->sh_info; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - struct elf_link_hash_entry *h; - struct elf32_arm_link_hash_entry *eh; - unsigned long r_symndx; - int r_type; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - r_type = arm_real_reloc_type (htab, r_type); - - if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) - { - (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd, - r_symndx); - return FALSE; - } - - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - } - - eh = (struct elf32_arm_link_hash_entry *) h; - - switch (r_type) - { - case R_ARM_GOT32: - case R_ARM_GOT_PREL: - case R_ARM_TLS_GD32: - case R_ARM_TLS_IE32: - /* This symbol requires a global offset table entry. */ - { - int tls_type, old_tls_type; - - switch (r_type) - { - case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break; - case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break; - default: tls_type = GOT_NORMAL; break; - } - - if (h != NULL) - { - h->got.refcount++; - old_tls_type = elf32_arm_hash_entry (h)->tls_type; - } - else - { - bfd_signed_vma *local_got_refcounts; - - /* This is a global offset table entry for a local symbol. */ - local_got_refcounts = elf_local_got_refcounts (abfd); - if (local_got_refcounts == NULL) - { - bfd_size_type size; - - size = symtab_hdr->sh_info; - size *= (sizeof (bfd_signed_vma) + sizeof(char)); - local_got_refcounts = bfd_zalloc (abfd, size); - if (local_got_refcounts == NULL) - return FALSE; - elf_local_got_refcounts (abfd) = local_got_refcounts; - elf32_arm_local_got_tls_type (abfd) - = (char *) (local_got_refcounts + symtab_hdr->sh_info); - } - local_got_refcounts[r_symndx] += 1; - old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx]; - } - - /* We will already have issued an error message if there is a - TLS / non-TLS mismatch, based on the symbol type. We don't - support any linker relaxations. So just combine any TLS - types needed. */ - if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL - && tls_type != GOT_NORMAL) - tls_type |= old_tls_type; - - if (old_tls_type != tls_type) - { - if (h != NULL) - elf32_arm_hash_entry (h)->tls_type = tls_type; - else - elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type; - } - } - /* Fall through */ - - case R_ARM_TLS_LDM32: - if (r_type == R_ARM_TLS_LDM32) - htab->tls_ldm_got.refcount++; - /* Fall through */ - - case R_ARM_GOTOFF32: - case R_ARM_GOTPC: - if (htab->sgot == NULL) - { - if (htab->root.dynobj == NULL) - htab->root.dynobj = abfd; - if (!create_got_section (htab->root.dynobj, info)) - return FALSE; - } - break; - - case R_ARM_ABS12: - /* VxWorks uses dynamic R_ARM_ABS12 relocations for - ldr __GOTT_INDEX__ offsets. */ - if (!htab->vxworks_p) - break; - /* Fall through */ - - case R_ARM_ABS32: - case R_ARM_REL32: - case R_ARM_PC24: - case R_ARM_PLT32: - case R_ARM_CALL: - case R_ARM_JUMP24: - case R_ARM_PREL31: - case R_ARM_THM_CALL: - /* Should the interworking branches be listed here? */ - if (h != NULL) - { - /* If this reloc is in a read-only section, we might - need a copy reloc. We can't check reliably at this - stage whether the section is read-only, as input - sections have not yet been mapped to output sections. - Tentatively set the flag for now, and correct in - adjust_dynamic_symbol. */ - if (!info->shared) - h->non_got_ref = 1; - - /* We may need a .plt entry if the function this reloc - refers to is in a different object. We can't tell for - sure yet, because something later might force the - symbol local. */ - if (r_type == R_ARM_PC24 - || r_type == R_ARM_CALL - || r_type == R_ARM_JUMP24 - || r_type == R_ARM_PREL31 - || r_type == R_ARM_PLT32 - || r_type == R_ARM_THM_CALL) - h->needs_plt = 1; - - /* If we create a PLT entry, this relocation will reference - it, even if it's an ABS32 relocation. */ - h->plt.refcount += 1; - - if (r_type == R_ARM_THM_CALL) - eh->plt_thumb_refcount += 1; - } - - /* If we are creating a shared library or relocatable executable, - 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). We account for that - possibility below by storing information in the - relocs_copied field of the hash table entry. */ - if ((info->shared || htab->root.is_relocatable_executable) - && (sec->flags & SEC_ALLOC) != 0 - && (r_type == R_ARM_ABS32 - || (h != NULL && ! h->needs_plt - && (! info->symbolic || ! h->def_regular)))) - { - struct elf32_arm_relocs_copied *p, **head; - - /* When creating a shared object, we must copy these - reloc types into the output file. We create a reloc - section in dynobj and make room for this reloc. */ - if (sreloc == NULL) - { - const char * name; - - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return FALSE; - - BFD_ASSERT (reloc_section_p (htab, name, sec)); - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - flagword flags; - - flags = (SEC_HAS_CONTENTS | SEC_READONLY - | SEC_IN_MEMORY | SEC_LINKER_CREATED); - if ((sec->flags & SEC_ALLOC) != 0 - /* BPABI objects never have dynamic - relocations mapped. */ - && !htab->symbian_p) - flags |= SEC_ALLOC | SEC_LOAD; - sreloc = bfd_make_section_with_flags (dynobj, - name, - flags); - if (sreloc == NULL - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return FALSE; - } - - elf_section_data (sec)->sreloc = sreloc; - } - - /* If this is a global symbol, we count the number of - relocations we need for this symbol. */ - if (h != NULL) - { - head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied; - } - else - { - /* Track dynamic relocs needed for local syms too. - We really need local syms available to do this - easily. Oh well. */ - - asection *s; - void *vpp; - - s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, - sec, r_symndx); - if (s == NULL) - return FALSE; - - vpp = &elf_section_data (s)->local_dynrel; - head = (struct elf32_arm_relocs_copied **) vpp; - } - - p = *head; - if (p == NULL || p->section != sec) - { - bfd_size_type amt = sizeof *p; - - p = bfd_alloc (htab->root.dynobj, amt); - if (p == NULL) - return FALSE; - p->next = *head; - *head = p; - p->section = sec; - p->count = 0; - p->pc_count = 0; - } - - if (r_type == R_ARM_REL32) - p->pc_count += 1; - p->count += 1; - } - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_ARM_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_ARM_GNU_VTENTRY: - if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) - return FALSE; - break; - } - } - - return TRUE; -} - -/* Treat mapping symbols as special target symbols. */ - -static bfd_boolean -elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym) -{ - return bfd_is_arm_mapping_symbol_name (sym->name); -} - -/* This is a copy of elf_find_function() from elf.c except that - ARM mapping symbols are ignored when looking for function names - and STT_ARM_TFUNC is considered to a function type. */ - -static bfd_boolean -arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED, - asection * section, - asymbol ** symbols, - bfd_vma offset, - const char ** filename_ptr, - const char ** functionname_ptr) -{ - const char * filename = NULL; - asymbol * func = NULL; - bfd_vma low_func = 0; - asymbol ** p; - - for (p = symbols; *p != NULL; p++) - { - elf_symbol_type *q; - - q = (elf_symbol_type *) *p; - - switch (ELF_ST_TYPE (q->internal_elf_sym.st_info)) - { - default: - break; - case STT_FILE: - filename = bfd_asymbol_name (&q->symbol); - break; - case STT_FUNC: - case STT_ARM_TFUNC: - case STT_NOTYPE: - /* Skip $a and $t symbols. */ - if ((q->symbol.flags & BSF_LOCAL) - && bfd_is_arm_mapping_symbol_name (q->symbol.name)) - continue; - /* Fall through. */ - if (bfd_get_section (&q->symbol) == section - && q->symbol.value >= low_func - && q->symbol.value <= offset) - { - func = (asymbol *) q; - low_func = q->symbol.value; - } - break; - } - } - - if (func == NULL) - return FALSE; - - if (filename_ptr) - *filename_ptr = filename; - if (functionname_ptr) - *functionname_ptr = bfd_asymbol_name (func); - - return TRUE; -} - - -/* Find the nearest line to a particular section and offset, for error - reporting. This code is a duplicate of the code in elf.c, except - that it uses arm_elf_find_function. */ - -static bfd_boolean -elf32_arm_find_nearest_line (bfd * abfd, - asection * section, - asymbol ** symbols, - bfd_vma offset, - const char ** filename_ptr, - const char ** functionname_ptr, - unsigned int * line_ptr) -{ - bfd_boolean found = FALSE; - - /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */ - - if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, - filename_ptr, functionname_ptr, - line_ptr, 0, - & elf_tdata (abfd)->dwarf2_find_line_info)) - { - if (!*functionname_ptr) - arm_elf_find_function (abfd, section, symbols, offset, - *filename_ptr ? NULL : filename_ptr, - functionname_ptr); - - return TRUE; - } - - if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, - & found, filename_ptr, - functionname_ptr, line_ptr, - & elf_tdata (abfd)->line_info)) - return FALSE; - - if (found && (*functionname_ptr || *line_ptr)) - return TRUE; - - if (symbols == NULL) - return FALSE; - - if (! arm_elf_find_function (abfd, section, symbols, offset, - filename_ptr, functionname_ptr)) - return FALSE; - - *line_ptr = 0; - return TRUE; -} - -static bfd_boolean -elf32_arm_find_inliner_info (bfd * abfd, - const char ** filename_ptr, - const char ** functionname_ptr, - unsigned int * line_ptr) -{ - bfd_boolean found; - found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr, - functionname_ptr, line_ptr, - & elf_tdata (abfd)->dwarf2_find_line_info); - return found; -} - -/* 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 -elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info, - struct elf_link_hash_entry * h) -{ - bfd * dynobj; - asection * s; - unsigned int power_of_two; - struct elf32_arm_link_hash_entry * eh; - struct elf32_arm_link_hash_table *globals; - - globals = elf32_arm_hash_table (info); - dynobj = elf_hash_table (info)->dynobj; - - /* Make sure we know what is going on here. */ - BFD_ASSERT (dynobj != NULL - && (h->needs_plt - || h->u.weakdef != NULL - || (h->def_dynamic - && h->ref_regular - && !h->def_regular))); - - eh = (struct elf32_arm_link_hash_entry *) h; - - /* If this is a function, put it in the procedure linkage table. We - will fill in the contents of the procedure linkage table later, - when we know the address of the .got section. */ - if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC - || h->needs_plt) - { - if (h->plt.refcount <= 0 - || SYMBOL_CALLS_LOCAL (info, h) - || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT - && h->root.type == bfd_link_hash_undefweak)) - { - /* This case can occur if we saw a PLT32 reloc in an input - file, but the symbol was never referred to by a dynamic - object, or if all references were garbage collected. In - such a case, we don't actually need to build a procedure - linkage table, and we can just do a PC24 reloc instead. */ - h->plt.offset = (bfd_vma) -1; - eh->plt_thumb_refcount = 0; - h->needs_plt = 0; - } - - return TRUE; - } - else - { - /* It's possible that we incorrectly decided a .plt reloc was - needed for an R_ARM_PC24 or similar reloc to a non-function sym - in check_relocs. We can't decide accurately between function - and non-function syms in check-relocs; Objects loaded later in - the link may change h->type. So fix it now. */ - h->plt.offset = (bfd_vma) -1; - eh->plt_thumb_refcount = 0; - } - - /* 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; - return TRUE; - } - - /* If there are no non-GOT references, we do not need a copy - relocation. */ - if (!h->non_got_ref) - return TRUE; - - /* This is a reference to a symbol defined by a dynamic object which - is not a function. */ - - /* 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. Relocatable executables - can reference data in shared objects directly, so we don't need to - do anything here. */ - if (info->shared || globals->root.is_relocatable_executable) - return TRUE; - - if (h->size == 0) - { - (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), - h->root.root.string); - return TRUE; - } - - /* 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. */ - s = bfd_get_section_by_name (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_ARM_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 - .rel(a).bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) - { - asection *srel; - - srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss")); - BFD_ASSERT (srel != NULL); - srel->size += RELOC_SIZE (globals); - h->needs_copy = 1; - } - - /* We need to figure out the alignment required for this symbol. I - have no idea how ELF linkers handle this. */ - power_of_two = bfd_log2 (h->size); - if (power_of_two > 3) - power_of_two = 3; - - /* Apply the required alignment. */ - s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); - if (power_of_two > bfd_get_section_alignment (dynobj, s)) - { - if (! bfd_set_section_alignment (dynobj, s, power_of_two)) - return FALSE; - } - - /* Define the symbol as being at this point in the section. */ - h->root.u.def.section = s; - h->root.u.def.value = s->size; - - /* Increment the section size to make room for the symbol. */ - s->size += h->size; - - return TRUE; -} - -/* 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 elf32_arm_link_hash_table *htab; - struct elf32_arm_link_hash_entry *eh; - struct elf32_arm_relocs_copied *p; - - eh = (struct elf32_arm_link_hash_entry *) h; - - if (h->root.type == bfd_link_hash_indirect) - return TRUE; - - if (h->root.type == bfd_link_hash_warning) - /* When warning symbols are created, they **replace** the "real" - entry in the hash table, thus we never get to see the real - symbol in a hash traversal. So look at it now. */ - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - info = (struct bfd_link_info *) inf; - htab = elf32_arm_hash_table (info); - - if (htab->root.dynamic_sections_created - && h->plt.refcount > 0) - { - /* 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 (info->shared - || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) - { - asection *s = htab->splt; - - /* If this is the first .plt entry, make room for the special - first entry. */ - if (s->size == 0) - s->size += htab->plt_header_size; - - h->plt.offset = s->size; - - /* If we will insert a Thumb trampoline before this PLT, leave room - for it. */ - if (!htab->use_blx && eh->plt_thumb_refcount > 0) - { - h->plt.offset += PLT_THUMB_STUB_SIZE; - s->size += PLT_THUMB_STUB_SIZE; - } - - /* If this symbol is not defined in a regular file, and we are - not generating a shared library, then set the symbol to this - location in the .plt. This is required to make function - pointers compare as equal between the normal executable and - the shared library. */ - if (! info->shared - && !h->def_regular) - { - h->root.u.def.section = s; - h->root.u.def.value = h->plt.offset; - - /* Make sure the function is not marked as Thumb, in case - it is the target of an ABS32 relocation, which will - point to the PLT entry. */ - if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC) - h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC); - } - - /* Make room for this entry. */ - s->size += htab->plt_entry_size; - - if (!htab->symbian_p) - { - /* We also need to make an entry in the .got.plt section, which - will be placed in the .got section by the linker script. */ - eh->plt_got_offset = htab->sgotplt->size; - htab->sgotplt->size += 4; - } - - /* We also need to make an entry in the .rel(a).plt section. */ - htab->srelplt->size += RELOC_SIZE (htab); - - /* VxWorks executables have a second set of relocations for - each PLT entry. They go in a separate relocation section, - which is processed by the kernel loader. */ - if (htab->vxworks_p && !info->shared) - { - /* There is a relocation for the initial PLT entry: - an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */ - if (h->plt.offset == htab->plt_header_size) - htab->srelplt2->size += RELOC_SIZE (htab); - - /* There are two extra relocations for each subsequent - PLT entry: an R_ARM_32 relocation for the GOT entry, - and an R_ARM_32 relocation for the PLT entry. */ - htab->srelplt2->size += RELOC_SIZE (htab) * 2; - } - } - else - { - h->plt.offset = (bfd_vma) -1; - h->needs_plt = 0; - } - } - else - { - h->plt.offset = (bfd_vma) -1; - h->needs_plt = 0; - } - - if (h->got.refcount > 0) - { - asection *s; - bfd_boolean dyn; - int tls_type = elf32_arm_hash_entry (h)->tls_type; - int indx; - - /* 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 (!htab->symbian_p) - { - s = htab->sgot; - h->got.offset = s->size; - - if (tls_type == GOT_UNKNOWN) - abort (); - - if (tls_type == GOT_NORMAL) - /* Non-TLS symbols need one GOT slot. */ - s->size += 4; - else - { - if (tls_type & GOT_TLS_GD) - /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */ - s->size += 8; - if (tls_type & GOT_TLS_IE) - /* R_ARM_TLS_IE32 needs one GOT slot. */ - s->size += 4; - } - - dyn = htab->root.dynamic_sections_created; - - indx = 0; - if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) - && (!info->shared - || !SYMBOL_REFERENCES_LOCAL (info, h))) - indx = h->dynindx; - - if (tls_type != GOT_NORMAL - && (info->shared || indx != 0) - && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT - || h->root.type != bfd_link_hash_undefweak)) - { - if (tls_type & GOT_TLS_IE) - htab->srelgot->size += RELOC_SIZE (htab); - - if (tls_type & GOT_TLS_GD) - htab->srelgot->size += RELOC_SIZE (htab); - - if ((tls_type & GOT_TLS_GD) && indx != 0) - htab->srelgot->size += RELOC_SIZE (htab); - } - else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT - || h->root.type != bfd_link_hash_undefweak) - && (info->shared - || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) - htab->srelgot->size += RELOC_SIZE (htab); - } - } - else - h->got.offset = (bfd_vma) -1; - - if (eh->relocs_copied == NULL) - 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 pc-relative relocs that have become local due to symbol - visibility changes. */ - - if (info->shared || htab->root.is_relocatable_executable) - { - /* The only reloc that uses pc_count is R_ARM_REL32, which will - appear on something like ".long foo - .". 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 assembly like ".long foo - .". */ - if (SYMBOL_CALLS_LOCAL (info, h)) - { - struct elf32_arm_relocs_copied **pp; - - for (pp = &eh->relocs_copied; (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->relocs_copied != NULL - && h->root.type == bfd_link_hash_undefweak) - { - if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) - eh->relocs_copied = NULL; - - /* Make sure undefined weak symbols are output as a dynamic - symbol in PIEs. */ - else if (h->dynindx == -1 - && !h->forced_local) - { - if (! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - } - - else if (htab->root.is_relocatable_executable && h->dynindx == -1 - && h->root.type == bfd_link_hash_new) - { - /* Output absolute symbols so that we can create relocations - against them. For normal symbols we output a relocation - against the section that contains them. */ - if (! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - } - else - { - /* 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_dynamic - && !h->def_regular) - || (htab->root.dynamic_sections_created - && (h->root.type == bfd_link_hash_undefweak - || h->root.type == bfd_link_hash_undefined)))) - { - /* 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->relocs_copied = NULL; - - keep: ; - } - - /* Finally, allocate space. */ - for (p = eh->relocs_copied; p != NULL; p = p->next) - { - asection *sreloc = elf_section_data (p->section)->sreloc; - sreloc->size += p->count * RELOC_SIZE (htab); - } - - return TRUE; -} - -/* Find any dynamic relocs that apply to read-only sections. */ - -static bfd_boolean -elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf) -{ - struct elf32_arm_link_hash_entry *eh; - struct elf32_arm_relocs_copied *p; - - if (h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - - eh = (struct elf32_arm_link_hash_entry *) h; - for (p = eh->relocs_copied; p != NULL; p = p->next) - { - asection *s = p->section; - - if (s != NULL && (s->flags & SEC_READONLY) != 0) - { - struct bfd_link_info *info = (struct bfd_link_info *) inf; - - 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 -elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, - struct bfd_link_info * info) -{ - bfd * dynobj; - asection * s; - bfd_boolean plt; - bfd_boolean relocs; - bfd *ibfd; - struct elf32_arm_link_hash_table *htab; - - htab = elf32_arm_hash_table (info); - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); - check_use_blx (htab); - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Set the contents of the .interp section to the interpreter. */ - if (info->executable) - { - s = bfd_get_section_by_name (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - 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) - { - bfd_signed_vma *local_got; - bfd_signed_vma *end_local_got; - char *local_tls_type; - bfd_size_type locsymcount; - Elf_Internal_Shdr *symtab_hdr; - asection *srel; - - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) - continue; - - for (s = ibfd->sections; s != NULL; s = s->next) - { - struct elf32_arm_relocs_copied *p; - - for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) - { - if (!bfd_is_abs_section (p->section) - && bfd_is_abs_section (p->section->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) - { - srel = elf_section_data (p->section)->sreloc; - srel->size += p->count * RELOC_SIZE (htab); - if ((p->section->output_section->flags & SEC_READONLY) != 0) - info->flags |= DF_TEXTREL; - } - } - } - - local_got = elf_local_got_refcounts (ibfd); - if (!local_got) - continue; - - symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; - locsymcount = symtab_hdr->sh_info; - end_local_got = local_got + locsymcount; - local_tls_type = elf32_arm_local_got_tls_type (ibfd); - s = htab->sgot; - srel = htab->srelgot; - for (; local_got < end_local_got; ++local_got, ++local_tls_type) - { - if (*local_got > 0) - { - *local_got = s->size; - if (*local_tls_type & GOT_TLS_GD) - /* TLS_GD relocs need an 8-byte structure in the GOT. */ - s->size += 8; - if (*local_tls_type & GOT_TLS_IE) - s->size += 4; - if (*local_tls_type == GOT_NORMAL) - s->size += 4; - - if (info->shared || *local_tls_type == GOT_TLS_GD) - srel->size += RELOC_SIZE (htab); - } - else - *local_got = (bfd_vma) -1; - } - } - - if (htab->tls_ldm_got.refcount > 0) - { - /* Allocate two GOT entries and one dynamic relocation (if necessary) - for R_ARM_TLS_LDM32 relocations. */ - htab->tls_ldm_got.offset = htab->sgot->size; - htab->sgot->size += 8; - if (info->shared) - htab->srelgot->size += RELOC_SIZE (htab); - } - else - htab->tls_ldm_got.offset = -1; - - /* Allocate global sym .plt and .got entries, and space for global - sym dynamic relocs. */ - elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info); - - /* The check_relocs and adjust_dynamic_symbol entry points have - determined the sizes of the various dynamic sections. Allocate - memory for them. */ - plt = FALSE; - relocs = FALSE; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char * name; - - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - if (strcmp (name, ".plt") == 0) - { - /* Remember whether there is a PLT. */ - plt = s->size != 0; - } - else if (strncmp (name, ".rel", 4) == 0) - { - if (s->size != 0) - { - /* Remember whether there are any reloc sections other - than .rel(a).plt and .rela.plt.unloaded. */ - if (s != htab->srelplt && s != htab->srelplt2) - 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 if (strncmp (name, ".got", 4) != 0 - && strcmp (name, ".dynbss") != 0) - { - /* 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 .rel(a).bss and - .rel(a).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. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - return FALSE; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in elf32_arm_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 (plt) - { - if ( !add_dynamic_entry (DT_PLTGOT, 0) - || !add_dynamic_entry (DT_PLTRELSZ, 0) - || !add_dynamic_entry (DT_PLTREL, - htab->use_rel ? DT_REL : DT_RELA) - || !add_dynamic_entry (DT_JMPREL, 0)) - return FALSE; - } - - if (relocs) - { - if (htab->use_rel) - { - if (!add_dynamic_entry (DT_REL, 0) - || !add_dynamic_entry (DT_RELSZ, 0) - || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab))) - return FALSE; - } - else - { - if (!add_dynamic_entry (DT_RELA, 0) - || !add_dynamic_entry (DT_RELASZ, 0) - || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) - 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->root, elf32_arm_readonly_dynrelocs, - (PTR) info); - - if ((info->flags & DF_TEXTREL) != 0) - { - if (!add_dynamic_entry (DT_TEXTREL, 0)) - return FALSE; - } - } -#undef add_dynamic_entry - - return TRUE; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static bfd_boolean -elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info, - struct elf_link_hash_entry * h, Elf_Internal_Sym * sym) -{ - bfd * dynobj; - struct elf32_arm_link_hash_table *htab; - struct elf32_arm_link_hash_entry *eh; - - dynobj = elf_hash_table (info)->dynobj; - htab = elf32_arm_hash_table (info); - eh = (struct elf32_arm_link_hash_entry *) h; - - if (h->plt.offset != (bfd_vma) -1) - { - asection * splt; - asection * srel; - bfd_byte *loc; - bfd_vma plt_index; - Elf_Internal_Rela rel; - - /* This symbol has an entry in the procedure linkage table. Set - it up. */ - - BFD_ASSERT (h->dynindx != -1); - - splt = bfd_get_section_by_name (dynobj, ".plt"); - srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt")); - BFD_ASSERT (splt != NULL && srel != NULL); - - /* Fill in the entry in the procedure linkage table. */ - if (htab->symbian_p) - { - unsigned i; - for (i = 0; i < htab->plt_entry_size / 4; ++i) - bfd_put_32 (output_bfd, - elf32_arm_symbian_plt_entry[i], - splt->contents + h->plt.offset + 4 * i); - - /* Fill in the entry in the .rel.plt section. */ - rel.r_offset = (splt->output_section->vma - + splt->output_offset - + h->plt.offset + 4 * (i - 1)); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); - - /* Get the index in the procedure linkage table which - corresponds to this symbol. This is the index of this symbol - in all the symbols for which we are making plt entries. The - first entry in the procedure linkage table is reserved. */ - plt_index = ((h->plt.offset - htab->plt_header_size) - / htab->plt_entry_size); - } - else - { - bfd_vma got_offset, got_address, plt_address; - bfd_vma got_displacement; - asection * sgot; - - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (sgot != NULL); - - /* Get the offset into the .got.plt table of the entry that - corresponds to this function. */ - got_offset = eh->plt_got_offset; - - /* Get the index in the procedure linkage table which - corresponds to this symbol. This is the index of this symbol - in all the symbols for which we are making plt entries. The - first three entries in .got.plt are reserved; after that - symbols appear in the same order as in .plt. */ - plt_index = (got_offset - 12) / 4; - - /* Calculate the address of the GOT entry. */ - got_address = (sgot->output_section->vma - + sgot->output_offset - + got_offset); - - /* ...and the address of the PLT entry. */ - plt_address = (splt->output_section->vma - + splt->output_offset - + h->plt.offset); - - if (htab->vxworks_p && info->shared) - { - unsigned int i; - bfd_vma val; - - for (i = 0; i != htab->plt_entry_size / 4; i++) - { - val = elf32_arm_vxworks_shared_plt_entry[i]; - if (i == 2) - val |= got_address - sgot->output_section->vma; - if (i == 5) - val |= plt_index * RELOC_SIZE (htab); - bfd_put_32 (output_bfd, val, - htab->splt->contents + h->plt.offset + i * 4); - } - } - else if (htab->vxworks_p) - { - unsigned int i; - bfd_vma val; - - for (i = 0; i != htab->plt_entry_size / 4; i++) - { - val = elf32_arm_vxworks_exec_plt_entry[i]; - if (i == 2) - val |= got_address; - if (i == 4) - val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2); - if (i == 5) - val |= plt_index * RELOC_SIZE (htab); - bfd_put_32 (output_bfd, val, - htab->splt->contents + h->plt.offset + i * 4); - } - - loc = (htab->srelplt2->contents - + (plt_index * 2 + 1) * RELOC_SIZE (htab)); - - /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation - referencing the GOT for this PLT entry. */ - rel.r_offset = plt_address + 8; - rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); - rel.r_addend = got_offset; - SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); - loc += RELOC_SIZE (htab); - - /* Create the R_ARM_ABS32 relocation referencing the - beginning of the PLT for this GOT entry. */ - rel.r_offset = got_address; - rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); - rel.r_addend = 0; - SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); - } - else - { - /* Calculate the displacement between the PLT slot and the - entry in the GOT. The eight-byte offset accounts for the - value produced by adding to pc in the first instruction - of the PLT stub. */ - got_displacement = got_address - (plt_address + 8); - - BFD_ASSERT ((got_displacement & 0xf0000000) == 0); - - if (!htab->use_blx && eh->plt_thumb_refcount > 0) - { - bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0], - splt->contents + h->plt.offset - 4); - bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1], - splt->contents + h->plt.offset - 2); - } - - bfd_put_32 (output_bfd, - elf32_arm_plt_entry[0] - | ((got_displacement & 0x0ff00000) >> 20), - splt->contents + h->plt.offset + 0); - bfd_put_32 (output_bfd, - elf32_arm_plt_entry[1] - | ((got_displacement & 0x000ff000) >> 12), - splt->contents + h->plt.offset + 4); - bfd_put_32 (output_bfd, - elf32_arm_plt_entry[2] - | (got_displacement & 0x00000fff), - splt->contents + h->plt.offset + 8); -#ifdef FOUR_WORD_PLT - bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], - splt->contents + h->plt.offset + 12); -#endif - } - - /* Fill in the entry in the global offset table. */ - bfd_put_32 (output_bfd, - (splt->output_section->vma - + splt->output_offset), - sgot->contents + got_offset); - - /* Fill in the entry in the .rel(a).plt section. */ - rel.r_addend = 0; - rel.r_offset = got_address; - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT); - } - - loc = srel->contents + plt_index * RELOC_SIZE (htab); - SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); - - if (!h->def_regular) - { - /* Mark the symbol as undefined, rather than as defined in - the .plt section. Leave the value alone. */ - sym->st_shndx = SHN_UNDEF; - /* If the symbol is weak, we do need to clear the value. - Otherwise, the PLT entry would provide a definition for - the symbol even if the symbol wasn't defined anywhere, - and so the symbol would never be NULL. */ - if (!h->ref_regular_nonweak) - sym->st_value = 0; - } - } - - if (h->got.offset != (bfd_vma) -1 - && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0 - && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0) - { - asection * sgot; - asection * srel; - Elf_Internal_Rela rel; - bfd_byte *loc; - bfd_vma offset; - - /* This symbol has an entry in the global offset table. Set it - up. */ - sgot = bfd_get_section_by_name (dynobj, ".got"); - srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got")); - BFD_ASSERT (sgot != NULL && srel != NULL); - - offset = (h->got.offset & ~(bfd_vma) 1); - rel.r_addend = 0; - rel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + offset); - - /* If this is a static link, or it is a -Bsymbolic link and the - symbol is defined locally or was forced to be local because - of a version file, we just want to emit a RELATIVE reloc. - The entry in the global offset table will already have been - initialized in the relocate_section function. */ - if (info->shared - && SYMBOL_REFERENCES_LOCAL (info, h)) - { - BFD_ASSERT((h->got.offset & 1) != 0); - rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE); - if (!htab->use_rel) - { - rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); - } - } - else - { - BFD_ASSERT((h->got.offset & 1) == 0); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT); - } - - loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab); - SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); - } - - if (h->needs_copy) - { - asection * s; - Elf_Internal_Rela rel; - bfd_byte *loc; - - /* This symbol needs a copy reloc. Set it up. */ - BFD_ASSERT (h->dynindx != -1 - && (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak)); - - s = bfd_get_section_by_name (h->root.u.def.section->owner, - RELOC_SECTION (htab, ".bss")); - BFD_ASSERT (s != NULL); - - rel.r_addend = 0; - rel.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY); - loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab); - SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc); - } - - /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks, - the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative - to the ".got" section. */ - if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || (!htab->vxworks_p && h == htab->root.hgot)) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info) -{ - bfd * dynobj; - asection * sgot; - asection * sdyn; - - dynobj = elf_hash_table (info)->dynobj; - - sgot = bfd_get_section_by_name (dynobj, ".got.plt"); - BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL); - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - struct elf32_arm_link_hash_table *htab; - - htab = elf32_arm_hash_table (info); - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); - - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char * name; - asection * s; - - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - unsigned int type; - - default: - break; - - case DT_HASH: - name = ".hash"; - goto get_vma_if_bpabi; - case DT_STRTAB: - name = ".dynstr"; - goto get_vma_if_bpabi; - case DT_SYMTAB: - name = ".dynsym"; - goto get_vma_if_bpabi; - case DT_VERSYM: - name = ".gnu.version"; - goto get_vma_if_bpabi; - case DT_VERDEF: - name = ".gnu.version_d"; - goto get_vma_if_bpabi; - case DT_VERNEED: - name = ".gnu.version_r"; - goto get_vma_if_bpabi; - - case DT_PLTGOT: - name = ".got"; - goto get_vma; - case DT_JMPREL: - name = RELOC_SECTION (htab, ".plt"); - get_vma: - s = bfd_get_section_by_name (output_bfd, name); - BFD_ASSERT (s != NULL); - if (!htab->symbian_p) - dyn.d_un.d_ptr = s->vma; - else - /* In the BPABI, tags in the PT_DYNAMIC section point - at the file offset, not the memory address, for the - convenience of the post linker. */ - dyn.d_un.d_ptr = s->filepos; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - get_vma_if_bpabi: - if (htab->symbian_p) - goto get_vma; - break; - - case DT_PLTRELSZ: - s = bfd_get_section_by_name (output_bfd, - RELOC_SECTION (htab, ".plt")); - BFD_ASSERT (s != NULL); - dyn.d_un.d_val = s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_RELSZ: - case DT_RELASZ: - if (!htab->symbian_p) - { - /* My reading of the SVR4 ABI indicates that the - procedure linkage table relocs (DT_JMPREL) should be - included in the overall relocs (DT_REL). This is - what Solaris does. However, UnixWare can not handle - that case. Therefore, we override the DT_RELSZ entry - here to make it not include the JMPREL relocs. Since - the linker script arranges for .rel(a).plt to follow all - other relocation sections, we don't have to worry - about changing the DT_REL entry. */ - s = bfd_get_section_by_name (output_bfd, - RELOC_SECTION (htab, ".plt")); - if (s != NULL) - dyn.d_un.d_val -= s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - } - /* Fall through */ - - case DT_REL: - case DT_RELA: - /* In the BPABI, the DT_REL tag must point at the file - offset, not the VMA, of the first relocation - section. So, we use code similar to that in - elflink.c, but do not check for SHF_ALLOC on the - relcoation section, since relocations sections are - never allocated under the BPABI. The comments above - about Unixware notwithstanding, we include all of the - relocations here. */ - if (htab->symbian_p) - { - unsigned int i; - type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ) - ? SHT_REL : SHT_RELA); - dyn.d_un.d_val = 0; - for (i = 1; i < elf_numsections (output_bfd); i++) - { - Elf_Internal_Shdr *hdr - = elf_elfsections (output_bfd)[i]; - if (hdr->sh_type == type) - { - if (dyn.d_tag == DT_RELSZ - || dyn.d_tag == DT_RELASZ) - dyn.d_un.d_val += hdr->sh_size; - else if ((ufile_ptr) hdr->sh_offset - <= dyn.d_un.d_val - 1) - dyn.d_un.d_val = hdr->sh_offset; - } - } - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - } - break; - - /* Set the bottom bit of DT_INIT/FINI if the - corresponding function is Thumb. */ - case DT_INIT: - name = info->init_function; - goto get_sym; - case DT_FINI: - name = info->fini_function; - get_sym: - /* If it wasn't set by elf_bfd_final_link - then there is nothing to adjust. */ - if (dyn.d_un.d_val != 0) - { - struct elf_link_hash_entry * eh; - - eh = elf_link_hash_lookup (elf_hash_table (info), name, - FALSE, FALSE, TRUE); - if (eh != (struct elf_link_hash_entry *) NULL - && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC) - { - dyn.d_un.d_val |= 1; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - } - } - break; - } - } - - /* Fill in the first entry in the procedure linkage table. */ - if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size) - { - const bfd_vma *plt0_entry; - bfd_vma got_address, plt_address, got_displacement; - - /* Calculate the addresses of the GOT and PLT. */ - got_address = sgot->output_section->vma + sgot->output_offset; - plt_address = splt->output_section->vma + splt->output_offset; - - if (htab->vxworks_p) - { - /* The VxWorks GOT is relocated by the dynamic linker. - Therefore, we must emit relocations rather than simply - computing the values now. */ - Elf_Internal_Rela rel; - - plt0_entry = elf32_arm_vxworks_exec_plt0_entry; - bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); - bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); - bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); - bfd_put_32 (output_bfd, got_address, splt->contents + 12); - - /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */ - rel.r_offset = plt_address + 12; - rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); - rel.r_addend = 0; - SWAP_RELOC_OUT (htab) (output_bfd, &rel, - htab->srelplt2->contents); - } - else - { - got_displacement = got_address - (plt_address + 16); - - plt0_entry = elf32_arm_plt0_entry; - bfd_put_32 (output_bfd, plt0_entry[0], splt->contents + 0); - bfd_put_32 (output_bfd, plt0_entry[1], splt->contents + 4); - bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8); - bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12); - -#ifdef FOUR_WORD_PLT - /* The displacement value goes in the otherwise-unused - last word of the second entry. */ - bfd_put_32 (output_bfd, got_displacement, splt->contents + 28); -#else - bfd_put_32 (output_bfd, got_displacement, splt->contents + 16); -#endif - } - } - - /* UnixWare sets the entsize of .plt to 4, although that doesn't - really seem like the right value. */ - elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; - - if (htab->vxworks_p && !info->shared && htab->splt->size > 0) - { - /* Correct the .rel(a).plt.unloaded relocations. They will have - incorrect symbol indexes. */ - int num_plts; - unsigned char *p; - - num_plts = ((htab->splt->size - htab->plt_header_size) - / htab->plt_entry_size); - p = htab->srelplt2->contents + RELOC_SIZE (htab); - - for (; num_plts; num_plts--) - { - Elf_Internal_Rela rel; - - SWAP_RELOC_IN (htab) (output_bfd, p, &rel); - rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32); - SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); - p += RELOC_SIZE (htab); - - SWAP_RELOC_IN (htab) (output_bfd, p, &rel); - rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32); - SWAP_RELOC_OUT (htab) (output_bfd, &rel, p); - p += RELOC_SIZE (htab); - } - } - } - - /* Fill in the first three entries in the global offset table. */ - if (sgot) - { - if (sgot->size > 0) - { - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - sgot->contents); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); - } - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - } - - return TRUE; -} - -static void -elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED) -{ - Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */ - struct elf32_arm_link_hash_table *globals; - - i_ehdrp = elf_elfheader (abfd); - - if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN) - i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM; - else - i_ehdrp->e_ident[EI_OSABI] = 0; - i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION; - - if (link_info) - { - globals = elf32_arm_hash_table (link_info); - if (globals->byteswap_code) - i_ehdrp->e_flags |= EF_ARM_BE8; - } -} - -static enum elf_reloc_type_class -elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela) -{ - switch ((int) ELF32_R_TYPE (rela->r_info)) - { - case R_ARM_RELATIVE: - return reloc_class_relative; - case R_ARM_JUMP_SLOT: - return reloc_class_plt; - case R_ARM_COPY: - return reloc_class_copy; - default: - return reloc_class_normal; - } -} - -/* Set the right machine number for an Arm ELF file. */ - -static bfd_boolean -elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr) -{ - if (hdr->sh_type == SHT_NOTE) - *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS; - - return TRUE; -} - -static void -elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) -{ - bfd_arm_update_notes (abfd, ARM_NOTE_SECTION); -} - -/* Return TRUE if this is an unwinding table entry. */ - -static bfd_boolean -is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name) -{ - size_t len1, len2; - - len1 = sizeof (ELF_STRING_ARM_unwind) - 1; - len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1; - return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0 - || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0); -} - - -/* Set the type and flags for an ARM section. We do this by - the section name, which is a hack, but ought to work. */ - -static bfd_boolean -elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec) -{ - const char * name; - - name = bfd_get_section_name (abfd, sec); - - if (is_arm_elf_unwind_section_name (abfd, name)) - { - hdr->sh_type = SHT_ARM_EXIDX; - hdr->sh_flags |= SHF_LINK_ORDER; - } - else if (strcmp(name, ".ARM.attributes") == 0) - { - hdr->sh_type = SHT_ARM_ATTRIBUTES; - } - return TRUE; -} - -/* Parse an Arm EABI attributes section. */ -static void -elf32_arm_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr) -{ - bfd_byte *contents; - bfd_byte *p; - bfd_vma len; - - contents = bfd_malloc (hdr->sh_size); - if (!contents) - return; - if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0, - hdr->sh_size)) - { - free (contents); - return; - } - p = contents; - if (*(p++) == 'A') - { - len = hdr->sh_size - 1; - while (len > 0) - { - int namelen; - bfd_vma section_len; - - section_len = bfd_get_32 (abfd, p); - p += 4; - if (section_len > len) - section_len = len; - len -= section_len; - namelen = strlen ((char *)p) + 1; - section_len -= namelen + 4; - if (strcmp((char *)p, "aeabi") != 0) - { - /* Vendor section. Ignore it. */ - p += namelen + section_len; - } - else - { - p += namelen; - while (section_len > 0) - { - int tag; - unsigned int n; - unsigned int val; - bfd_vma subsection_len; - bfd_byte *end; - - tag = read_unsigned_leb128 (abfd, p, &n); - p += n; - subsection_len = bfd_get_32 (abfd, p); - p += 4; - if (subsection_len > section_len) - subsection_len = section_len; - section_len -= subsection_len; - subsection_len -= n + 4; - end = p + subsection_len; - switch (tag) - { - case Tag_File: - while (p < end) - { - bfd_boolean is_string; - - tag = read_unsigned_leb128 (abfd, p, &n); - p += n; - if (tag == 4 || tag == 5) - is_string = 1; - else if (tag < 32) - is_string = 0; - else - is_string = (tag & 1) != 0; - if (tag == Tag_compatibility) - { - val = read_unsigned_leb128 (abfd, p, &n); - p += n; - elf32_arm_add_eabi_attr_compat (abfd, val, - (char *)p); - p += strlen ((char *)p) + 1; - } - else if (is_string) - { - elf32_arm_add_eabi_attr_string (abfd, tag, - (char *)p); - p += strlen ((char *)p) + 1; - } - else - { - val = read_unsigned_leb128 (abfd, p, &n); - p += n; - elf32_arm_add_eabi_attr_int (abfd, tag, val); - } - } - break; - case Tag_Section: - case Tag_Symbol: - /* Don't have anywhere convenient to attach these. - Fall through for now. */ - default: - /* Ignore things we don't kow about. */ - p += subsection_len; - subsection_len = 0; - break; - } - } - } - } - } - free (contents); -} - -/* Handle an ARM specific section when reading an object file. This is - called when bfd_section_from_shdr finds a section with an unknown - type. */ - -static bfd_boolean -elf32_arm_section_from_shdr (bfd *abfd, - Elf_Internal_Shdr * hdr, - const char *name, - int shindex) -{ - /* There ought to be a place to keep ELF backend specific flags, but - at the moment there isn't one. We just keep track of the - sections by their name, instead. Fortunately, the ABI gives - names for all the ARM specific sections, so we will probably get - away with this. */ - switch (hdr->sh_type) - { - case SHT_ARM_EXIDX: - case SHT_ARM_PREEMPTMAP: - case SHT_ARM_ATTRIBUTES: - break; - - default: - return FALSE; - } - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) - return FALSE; - - if (hdr->sh_type == SHT_ARM_ATTRIBUTES) - elf32_arm_parse_attributes(abfd, hdr); - return TRUE; -} - -/* A structure used to record a list of sections, independently - of the next and prev fields in the asection structure. */ -typedef struct section_list -{ - asection * sec; - struct section_list * next; - struct section_list * prev; -} -section_list; - -/* Unfortunately we need to keep a list of sections for which - an _arm_elf_section_data structure has been allocated. This - is because it is possible for functions like elf32_arm_write_section - to be called on a section which has had an elf_data_structure - allocated for it (and so the used_by_bfd field is valid) but - for which the ARM extended version of this structure - the - _arm_elf_section_data structure - has not been allocated. */ -static section_list * sections_with_arm_elf_section_data = NULL; - -static void -record_section_with_arm_elf_section_data (asection * sec) -{ - struct section_list * entry; - - entry = bfd_malloc (sizeof (* entry)); - if (entry == NULL) - return; - entry->sec = sec; - entry->next = sections_with_arm_elf_section_data; - entry->prev = NULL; - if (entry->next != NULL) - entry->next->prev = entry; - sections_with_arm_elf_section_data = entry; -} - -static struct section_list * -find_arm_elf_section_entry (asection * sec) -{ - struct section_list * entry; - static struct section_list * last_entry = NULL; - - /* This is a short cut for the typical case where the sections are added - to the sections_with_arm_elf_section_data list in forward order and - then looked up here in backwards order. This makes a real difference - to the ld-srec/sec64k.exp linker test. */ - entry = sections_with_arm_elf_section_data; - if (last_entry != NULL) - { - if (last_entry->sec == sec) - entry = last_entry; - else if (last_entry->next != NULL - && last_entry->next->sec == sec) - entry = last_entry->next; - } - - for (; entry; entry = entry->next) - if (entry->sec == sec) - break; - - if (entry) - /* Record the entry prior to this one - it is the entry we are most - likely to want to locate next time. Also this way if we have been - called from unrecord_section_with_arm_elf_section_data() we will not - be caching a pointer that is about to be freed. */ - last_entry = entry->prev; - - return entry; -} - -static _arm_elf_section_data * -get_arm_elf_section_data (asection * sec) -{ - struct section_list * entry; - - entry = find_arm_elf_section_entry (sec); - - if (entry) - return elf32_arm_section_data (entry->sec); - else - return NULL; -} - -static void -unrecord_section_with_arm_elf_section_data (asection * sec) -{ - struct section_list * entry; - - entry = find_arm_elf_section_entry (sec); - - if (entry) - { - if (entry->prev != NULL) - entry->prev->next = entry->next; - if (entry->next != NULL) - entry->next->prev = entry->prev; - if (entry == sections_with_arm_elf_section_data) - sections_with_arm_elf_section_data = entry->next; - free (entry); - } -} - -/* Called for each symbol. Builds a section map based on mapping symbols. - Does not alter any of the symbols. */ - -static bfd_boolean -elf32_arm_output_symbol_hook (struct bfd_link_info *info, - const char *name, - Elf_Internal_Sym *elfsym, - asection *input_sec, - struct elf_link_hash_entry *h) -{ - int mapcount; - elf32_arm_section_map *map; - elf32_arm_section_map *newmap; - _arm_elf_section_data *arm_data; - struct elf32_arm_link_hash_table *globals; - - globals = elf32_arm_hash_table (info); - if (globals->vxworks_p - && !elf_vxworks_link_output_symbol_hook (info, name, elfsym, - input_sec, h)) - return FALSE; - - /* Only do this on final link. */ - if (info->relocatable) - return TRUE; - - /* Only build a map if we need to byteswap code. */ - if (!globals->byteswap_code) - return TRUE; - - /* We only want mapping symbols. */ - if (! bfd_is_arm_mapping_symbol_name (name)) - return TRUE; - - /* If this section has not been allocated an _arm_elf_section_data - structure then we cannot record anything. */ - arm_data = get_arm_elf_section_data (input_sec); - if (arm_data == NULL) - return TRUE; - - mapcount = arm_data->mapcount + 1; - map = arm_data->map; - - /* TODO: This may be inefficient, but we probably don't usually have many - mapping symbols per section. */ - newmap = bfd_realloc (map, mapcount * sizeof (* map)); - if (newmap != NULL) - { - arm_data->map = newmap; - arm_data->mapcount = mapcount; - - newmap[mapcount - 1].vma = elfsym->st_value; - newmap[mapcount - 1].type = name[1]; - } - - return TRUE; -} - -/* Allocate target specific section data. */ - -static bfd_boolean -elf32_arm_new_section_hook (bfd *abfd, asection *sec) -{ - _arm_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; - - record_section_with_arm_elf_section_data (sec); - - return _bfd_elf_new_section_hook (abfd, sec); -} - - -/* Used to order a list of mapping symbols by address. */ - -static int -elf32_arm_compare_mapping (const void * a, const void * b) -{ - return ((const elf32_arm_section_map *) a)->vma - > ((const elf32_arm_section_map *) b)->vma; -} - - -/* Do code byteswapping. Return FALSE afterwards so that the section is - written out as normal. */ - -static bfd_boolean -elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec, - bfd_byte *contents) -{ - int mapcount; - _arm_elf_section_data *arm_data; - elf32_arm_section_map *map; - bfd_vma ptr; - bfd_vma end; - bfd_vma offset; - bfd_byte tmp; - int i; - - /* If this section has not been allocated an _arm_elf_section_data - structure then we cannot record anything. */ - arm_data = get_arm_elf_section_data (sec); - if (arm_data == NULL) - return FALSE; - - mapcount = arm_data->mapcount; - map = arm_data->map; - - if (mapcount == 0) - return FALSE; - - qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping); - - offset = sec->output_section->vma + sec->output_offset; - ptr = map[0].vma - offset; - for (i = 0; i < mapcount; i++) - { - if (i == mapcount - 1) - end = sec->size; - else - end = map[i + 1].vma - offset; - - switch (map[i].type) - { - case 'a': - /* Byte swap code words. */ - while (ptr + 3 < end) - { - tmp = contents[ptr]; - contents[ptr] = contents[ptr + 3]; - contents[ptr + 3] = tmp; - tmp = contents[ptr + 1]; - contents[ptr + 1] = contents[ptr + 2]; - contents[ptr + 2] = tmp; - ptr += 4; - } - break; - - case 't': - /* Byte swap code halfwords. */ - while (ptr + 1 < end) - { - tmp = contents[ptr]; - contents[ptr] = contents[ptr + 1]; - contents[ptr + 1] = tmp; - ptr += 2; - } - break; - - case 'd': - /* Leave data alone. */ - break; - } - ptr = end; - } - - free (map); - arm_data->mapcount = 0; - arm_data->map = NULL; - unrecord_section_with_arm_elf_section_data (sec); - - return FALSE; -} - -static void -unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED, - asection * sec, - void * ignore ATTRIBUTE_UNUSED) -{ - unrecord_section_with_arm_elf_section_data (sec); -} - -static bfd_boolean -elf32_arm_close_and_cleanup (bfd * abfd) -{ - bfd_map_over_sections (abfd, unrecord_section_via_map_over_sections, NULL); - - return _bfd_elf_close_and_cleanup (abfd); -} - -/* Display STT_ARM_TFUNC symbols as functions. */ - -static void -elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, - asymbol *asym) -{ - elf_symbol_type *elfsym = (elf_symbol_type *) asym; - - if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC) - elfsym->symbol.flags |= BSF_FUNCTION; -} - - -/* Mangle thumb function symbols as we read them in. */ - -static void -elf32_arm_swap_symbol_in (bfd * abfd, - const void *psrc, - const void *pshn, - Elf_Internal_Sym *dst) -{ - bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst); - - /* New EABI objects mark thumb function symbols by setting the low bit of - the address. Turn these into STT_ARM_TFUNC. */ - if (ELF_ST_TYPE (dst->st_info) == STT_FUNC - && (dst->st_value & 1)) - { - dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC); - dst->st_value &= ~(bfd_vma) 1; - } -} - - -/* Mangle thumb function symbols as we write them out. */ - -static void -elf32_arm_swap_symbol_out (bfd *abfd, - const Elf_Internal_Sym *src, - void *cdst, - void *shndx) -{ - Elf_Internal_Sym newsym; - - /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit - of the address set, as per the new EABI. We do this unconditionally - because objcopy does not set the elf header flags until after - it writes out the symbol table. */ - if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC) - { - newsym = *src; - newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC); - newsym.st_value |= 1; - - src = &newsym; - } - bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx); -} - -/* Add the PT_ARM_EXIDX program header. */ - -static bfd_boolean -elf32_arm_modify_segment_map (bfd *abfd, - struct bfd_link_info *info ATTRIBUTE_UNUSED) -{ - struct elf_segment_map *m; - asection *sec; - - sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); - if (sec != NULL && (sec->flags & SEC_LOAD) != 0) - { - /* If there is already a PT_ARM_EXIDX header, then we do not - want to add another one. This situation arises when running - "strip"; the input binary already has the header. */ - m = elf_tdata (abfd)->segment_map; - while (m && m->p_type != PT_ARM_EXIDX) - m = m->next; - if (!m) - { - m = bfd_zalloc (abfd, sizeof (struct elf_segment_map)); - if (m == NULL) - return FALSE; - m->p_type = PT_ARM_EXIDX; - m->count = 1; - m->sections[0] = sec; - - m->next = elf_tdata (abfd)->segment_map; - elf_tdata (abfd)->segment_map = m; - } - } - - return TRUE; -} - -/* We may add a PT_ARM_EXIDX program header. */ - -static int -elf32_arm_additional_program_headers (bfd *abfd) -{ - asection *sec; - - sec = bfd_get_section_by_name (abfd, ".ARM.exidx"); - if (sec != NULL && (sec->flags & SEC_LOAD) != 0) - return 1; - else - return 0; -} - -/* We use this to override swap_symbol_in and swap_symbol_out. */ -const struct elf_size_info elf32_arm_size_info = { - sizeof (Elf32_External_Ehdr), - sizeof (Elf32_External_Phdr), - sizeof (Elf32_External_Shdr), - sizeof (Elf32_External_Rel), - sizeof (Elf32_External_Rela), - sizeof (Elf32_External_Sym), - sizeof (Elf32_External_Dyn), - sizeof (Elf_External_Note), - 4, - 1, - 32, 2, - ELFCLASS32, EV_CURRENT, - bfd_elf32_write_out_phdrs, - bfd_elf32_write_shdrs_and_ehdr, - bfd_elf32_write_relocs, - elf32_arm_swap_symbol_in, - elf32_arm_swap_symbol_out, - bfd_elf32_slurp_reloc_table, - bfd_elf32_slurp_symbol_table, - bfd_elf32_swap_dyn_in, - bfd_elf32_swap_dyn_out, - bfd_elf32_swap_reloc_in, - bfd_elf32_swap_reloc_out, - bfd_elf32_swap_reloca_in, - bfd_elf32_swap_reloca_out -}; - -#define ELF_ARCH bfd_arch_arm -#define ELF_MACHINE_CODE EM_ARM -#ifdef __QNXTARGET__ -#define ELF_MAXPAGESIZE 0x1000 -#else -#define ELF_MAXPAGESIZE 0x1000 -#endif -#define ELF_MINPAGESIZE 0x1000 - -#define bfd_elf32_mkobject elf32_arm_mkobject - -#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data -#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data -#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags -#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data -#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create -#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup -#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line -#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info -#define bfd_elf32_new_section_hook elf32_arm_new_section_hook -#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol -#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup -#define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link - -#define elf_backend_get_symbol_type elf32_arm_get_symbol_type -#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook -#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook -#define elf_backend_check_relocs elf32_arm_check_relocs -#define elf_backend_relocate_section elf32_arm_relocate_section -#define elf_backend_write_section elf32_arm_write_section -#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol -#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections -#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections -#define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook -#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections -#define elf_backend_post_process_headers elf32_arm_post_process_headers -#define elf_backend_reloc_type_class elf32_arm_reloc_type_class -#define elf_backend_object_p elf32_arm_object_p -#define elf_backend_section_flags elf32_arm_section_flags -#define elf_backend_fake_sections elf32_arm_fake_sections -#define elf_backend_section_from_shdr elf32_arm_section_from_shdr -#define elf_backend_final_write_processing elf32_arm_final_write_processing -#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol -#define elf_backend_symbol_processing elf32_arm_symbol_processing -#define elf_backend_size_info elf32_arm_size_info -#define elf_backend_modify_segment_map elf32_arm_modify_segment_map -#define elf_backend_additional_program_headers \ - elf32_arm_additional_program_headers - -#define elf_backend_can_refcount 1 -#define elf_backend_can_gc_sections 1 -#define elf_backend_plt_readonly 1 -#define elf_backend_want_got_plt 1 -#define elf_backend_want_plt_sym 0 -#define elf_backend_may_use_rel_p 1 -#define elf_backend_may_use_rela_p 0 -#define elf_backend_default_use_rela_p 0 -#define elf_backend_rela_normal 0 - -#define elf_backend_got_header_size 12 - -#include "elf32-target.h" - -/* VxWorks Targets */ - -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec -#undef TARGET_LITTLE_NAME -#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks" -#undef TARGET_BIG_SYM -#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec -#undef TARGET_BIG_NAME -#define TARGET_BIG_NAME "elf32-bigarm-vxworks" - -/* Like elf32_arm_link_hash_table_create -- but overrides - appropriately for VxWorks. */ -static struct bfd_link_hash_table * -elf32_arm_vxworks_link_hash_table_create (bfd *abfd) -{ - struct bfd_link_hash_table *ret; - - ret = elf32_arm_link_hash_table_create (abfd); - if (ret) - { - struct elf32_arm_link_hash_table *htab - = (struct elf32_arm_link_hash_table *) ret; - htab->use_rel = 0; - htab->vxworks_p = 1; - } - return ret; -} - -static void -elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker) -{ - elf32_arm_final_write_processing (abfd, linker); - elf_vxworks_final_write_processing (abfd, linker); -} - -#undef elf32_bed -#define elf32_bed elf32_arm_vxworks_bed - -#undef bfd_elf32_bfd_link_hash_table_create -#define bfd_elf32_bfd_link_hash_table_create \ - elf32_arm_vxworks_link_hash_table_create -#undef elf_backend_add_symbol_hook -#define elf_backend_add_symbol_hook \ - elf_vxworks_add_symbol_hook -#undef elf_backend_final_write_processing -#define elf_backend_final_write_processing \ - elf32_arm_vxworks_final_write_processing -#undef elf_backend_emit_relocs -#define elf_backend_emit_relocs \ - elf_vxworks_emit_relocs - -#undef elf_backend_may_use_rel_p -#define elf_backend_may_use_rel_p 0 -#undef elf_backend_may_use_rela_p -#define elf_backend_may_use_rela_p 1 -#undef elf_backend_default_use_rela_p -#define elf_backend_default_use_rela_p 1 -#undef elf_backend_rela_normal -#define elf_backend_rela_normal 1 -#undef elf_backend_want_plt_sym -#define elf_backend_want_plt_sym 1 -#undef ELF_MAXPAGESIZE -#define ELF_MAXPAGESIZE 0x1000 - -#include "elf32-target.h" - - -/* Symbian OS Targets */ - -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec -#undef TARGET_LITTLE_NAME -#define TARGET_LITTLE_NAME "elf32-littlearm-symbian" -#undef TARGET_BIG_SYM -#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec -#undef TARGET_BIG_NAME -#define TARGET_BIG_NAME "elf32-bigarm-symbian" - -/* Like elf32_arm_link_hash_table_create -- but overrides - appropriately for Symbian OS. */ -static struct bfd_link_hash_table * -elf32_arm_symbian_link_hash_table_create (bfd *abfd) -{ - struct bfd_link_hash_table *ret; - - ret = elf32_arm_link_hash_table_create (abfd); - if (ret) - { - struct elf32_arm_link_hash_table *htab - = (struct elf32_arm_link_hash_table *)ret; - /* There is no PLT header for Symbian OS. */ - htab->plt_header_size = 0; - /* The PLT entries are each three instructions. */ - htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry); - htab->symbian_p = 1; - /* Symbian uses armv5t or above, so use_blx is always true. */ - htab->use_blx = 1; - htab->root.is_relocatable_executable = 1; - } - return ret; -} - -static const struct bfd_elf_special_section -elf32_arm_symbian_special_sections[] = -{ - /* In a BPABI executable, the dynamic linking sections do not go in - the loadable read-only segment. The post-linker may wish to - refer to these sections, but they are not part of the final - program image. */ - { ".dynamic", 8, 0, SHT_DYNAMIC, 0 }, - { ".dynstr", 7, 0, SHT_STRTAB, 0 }, - { ".dynsym", 7, 0, SHT_DYNSYM, 0 }, - { ".got", 4, 0, SHT_PROGBITS, 0 }, - { ".hash", 5, 0, SHT_HASH, 0 }, - /* These sections do not need to be writable as the SymbianOS - postlinker will arrange things so that no dynamic relocation is - required. */ - { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC }, - { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC }, - { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC }, - { NULL, 0, 0, 0, 0 } -}; - -static void -elf32_arm_symbian_begin_write_processing (bfd *abfd, - struct bfd_link_info *link_info - ATTRIBUTE_UNUSED) -{ - /* BPABI objects are never loaded directly by an OS kernel; they are - processed by a postlinker first, into an OS-specific format. If - the D_PAGED bit is set on the file, BFD will align segments on - page boundaries, so that an OS can directly map the file. With - BPABI objects, that just results in wasted space. In addition, - because we clear the D_PAGED bit, map_sections_to_segments will - recognize that the program headers should not be mapped into any - loadable segment. */ - abfd->flags &= ~D_PAGED; -} - -static bfd_boolean -elf32_arm_symbian_modify_segment_map (bfd *abfd, - struct bfd_link_info *info) -{ - struct elf_segment_map *m; - asection *dynsec; - - /* BPABI shared libraries and executables should have a PT_DYNAMIC - segment. However, because the .dynamic section is not marked - with SEC_LOAD, the generic ELF code will not create such a - segment. */ - dynsec = bfd_get_section_by_name (abfd, ".dynamic"); - if (dynsec) - { - m = _bfd_elf_make_dynamic_segment (abfd, dynsec); - m->next = elf_tdata (abfd)->segment_map; - elf_tdata (abfd)->segment_map = m; - } - - /* Also call the generic arm routine. */ - return elf32_arm_modify_segment_map (abfd, info); -} - -#undef elf32_bed -#define elf32_bed elf32_arm_symbian_bed - -/* The dynamic sections are not allocated on SymbianOS; the postlinker - will process them and then discard them. */ -#undef ELF_DYNAMIC_SEC_FLAGS -#define ELF_DYNAMIC_SEC_FLAGS \ - (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED) - -#undef bfd_elf32_bfd_link_hash_table_create -#define bfd_elf32_bfd_link_hash_table_create \ - elf32_arm_symbian_link_hash_table_create -#undef elf_backend_add_symbol_hook - -#undef elf_backend_special_sections -#define elf_backend_special_sections elf32_arm_symbian_special_sections - -#undef elf_backend_begin_write_processing -#define elf_backend_begin_write_processing \ - elf32_arm_symbian_begin_write_processing -#undef elf_backend_final_write_processing -#define elf_backend_final_write_processing \ - elf32_arm_final_write_processing -#undef elf_backend_emit_relocs - -#undef elf_backend_modify_segment_map -#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map - -/* There is no .got section for BPABI objects, and hence no header. */ -#undef elf_backend_got_header_size -#define elf_backend_got_header_size 0 - -/* Similarly, there is no .got.plt section. */ -#undef elf_backend_want_got_plt -#define elf_backend_want_got_plt 0 - -#undef elf_backend_may_use_rel_p -#define elf_backend_may_use_rel_p 1 -#undef elf_backend_may_use_rela_p -#define elf_backend_may_use_rela_p 0 -#undef elf_backend_default_use_rela_p -#define elf_backend_default_use_rela_p 0 -#undef elf_backend_rela_normal -#define elf_backend_rela_normal 0 -#undef elf_backend_want_plt_sym -#define elf_backend_want_plt_sym 0 -#undef ELF_MAXPAGESIZE -#define ELF_MAXPAGESIZE 0x8000 - -#include "elf32-target.h" |