diff options
Diffstat (limited to 'binutils-2.24/bfd/elf32-lm32.c')
| -rw-r--r-- | binutils-2.24/bfd/elf32-lm32.c | 2746 |
1 files changed, 0 insertions, 2746 deletions
diff --git a/binutils-2.24/bfd/elf32-lm32.c b/binutils-2.24/bfd/elf32-lm32.c deleted file mode 100644 index df6f3464..00000000 --- a/binutils-2.24/bfd/elf32-lm32.c +++ /dev/null @@ -1,2746 +0,0 @@ -/* Lattice Mico32-specific support for 32-bit ELF - Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. - Contributed by Jon Beniston <jon@beniston.com> - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -#include "sysdep.h" -#include "bfd.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/lm32.h" - -#define DEFAULT_STACK_SIZE 0x20000 - -#define PLT_ENTRY_SIZE 20 - -#define PLT0_ENTRY_WORD0 0 -#define PLT0_ENTRY_WORD1 0 -#define PLT0_ENTRY_WORD2 0 -#define PLT0_ENTRY_WORD3 0 -#define PLT0_ENTRY_WORD4 0 - -#define PLT0_PIC_ENTRY_WORD0 0 -#define PLT0_PIC_ENTRY_WORD1 0 -#define PLT0_PIC_ENTRY_WORD2 0 -#define PLT0_PIC_ENTRY_WORD3 0 -#define PLT0_PIC_ENTRY_WORD4 0 - -#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" - -extern const bfd_target bfd_elf32_lm32fdpic_vec; - -#define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_lm32fdpic_vec) - -static bfd_reloc_status_type lm32_elf_gprel_reloc - (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); - -/* The linker needs to keep track of the number of relocs that it - decides to copy as dynamic relocs in check_relocs for each symbol. - This is so that it can later discard them if they are found to be - unnecessary. We store the information in a field extending the - regular ELF linker hash table. */ - -struct elf_lm32_dyn_relocs -{ - struct elf_lm32_dyn_relocs *next; - - /* The input section of the reloc. */ - asection *sec; - - /* Total number of relocs copied for the input section. */ - bfd_size_type count; - - /* Number of pc-relative relocs copied for the input section. */ - bfd_size_type pc_count; -}; - -/* lm32 ELF linker hash entry. */ - -struct elf_lm32_link_hash_entry -{ - struct elf_link_hash_entry root; - - /* Track dynamic relocs copied for this symbol. */ - struct elf_lm32_dyn_relocs *dyn_relocs; -}; - -/* lm32 ELF linker hash table. */ - -struct elf_lm32_link_hash_table -{ - struct elf_link_hash_table root; - - /* Short-cuts to get to dynamic linker sections. */ - asection *sgot; - asection *sgotplt; - asection *srelgot; - asection *sfixup32; - asection *splt; - asection *srelplt; - asection *sdynbss; - asection *srelbss; - - int relocs32; -}; - -/* Get the lm32 ELF linker hash table from a link_info structure. */ - -#define lm32_elf_hash_table(p) \ - (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ - == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL) - -#define lm32fdpic_got_section(info) \ - (lm32_elf_hash_table (info)->sgot) -#define lm32fdpic_gotrel_section(info) \ - (lm32_elf_hash_table (info)->srelgot) -#define lm32fdpic_fixup32_section(info) \ - (lm32_elf_hash_table (info)->sfixup32) - -struct weak_symbol_list -{ - const char *name; - struct weak_symbol_list *next; -}; - -/* Create an entry in an lm32 ELF linker hash table. */ - -static struct bfd_hash_entry * -lm32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, - struct bfd_hash_table *table, - const char *string) -{ - struct elf_lm32_link_hash_entry *ret = - (struct elf_lm32_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == NULL) - ret = bfd_hash_allocate (table, - sizeof (struct elf_lm32_link_hash_entry)); - if (ret == NULL) - return NULL; - - /* Call the allocation method of the superclass. */ - ret = ((struct elf_lm32_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != NULL) - { - struct elf_lm32_link_hash_entry *eh; - - eh = (struct elf_lm32_link_hash_entry *) ret; - eh->dyn_relocs = NULL; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create an lm32 ELF linker hash table. */ - -static struct bfd_link_hash_table * -lm32_elf_link_hash_table_create (bfd *abfd) -{ - struct elf_lm32_link_hash_table *ret; - bfd_size_type amt = sizeof (struct elf_lm32_link_hash_table); - - ret = bfd_zmalloc (amt); - if (ret == NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - lm32_elf_link_hash_newfunc, - sizeof (struct elf_lm32_link_hash_entry), - LM32_ELF_DATA)) - { - free (ret); - return NULL; - } - - return &ret->root.root; -} - -/* Add a fixup to the ROFIXUP section. */ - -static bfd_vma -_lm32fdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma relocation) -{ - bfd_vma fixup_offset; - - if (rofixup->flags & SEC_EXCLUDE) - return -1; - - fixup_offset = rofixup->reloc_count * 4; - if (rofixup->contents) - { - BFD_ASSERT (fixup_offset < rofixup->size); - if (fixup_offset < rofixup->size) - bfd_put_32 (output_bfd, relocation, rofixup->contents + fixup_offset); - } - rofixup->reloc_count++; - - return fixup_offset; -} - -/* Create .got, .gotplt, and .rela.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 elf_lm32_link_hash_table *htab; - asection *s; - - /* This function may be called more than once. */ - s = bfd_get_linker_section (dynobj, ".got"); - if (s != NULL) - return TRUE; - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - if (! _bfd_elf_create_got_section (dynobj, info)) - return FALSE; - - htab->sgot = bfd_get_linker_section (dynobj, ".got"); - htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); - htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got"); - if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) - abort (); - - return TRUE; -} - -/* Create .rofixup sections in DYNOBJ, and set up - shortcuts to them in our hash table. */ - -static bfd_boolean -create_rofixup_section (bfd *dynobj, struct bfd_link_info *info) -{ - struct elf_lm32_link_hash_table *htab; - htab = lm32_elf_hash_table (info); - - if (htab == NULL) - return FALSE; - - /* Fixup section for R_LM32_32 relocs. */ - lm32fdpic_fixup32_section (info) - = bfd_make_section_anyway_with_flags (dynobj, - ".rofixup", - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)); - if (lm32fdpic_fixup32_section (info) == NULL - || ! bfd_set_section_alignment (dynobj, - lm32fdpic_fixup32_section (info), 2)) - return FALSE; - - return TRUE; -} - -static reloc_howto_type lm32_elf_howto_table [] = -{ - /* This reloc does nothing. */ - HOWTO (R_LM32_NONE, /* 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_LM32_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* An 8 bit absolute relocation. */ - HOWTO (R_LM32_8, /* 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_LM32_8", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16 bit absolute relocation. */ - HOWTO (R_LM32_16, /* 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_LM32_16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 32 bit absolute relocation. */ - HOWTO (R_LM32_32, /* 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_LM32_32", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_HI16, /* type */ - 16, /* 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_LM32_HI16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_LO16, /* 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_LM32_LO16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_GPREL16, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - lm32_elf_gprel_reloc, /* special_function */ - "R_LM32_GPREL16", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_CALL, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_LM32_CALL", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x3ffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_LM32_BRANCH, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_LM32_BRANCH", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - /* GNU extension to record C++ vtable hierarchy. */ - HOWTO (R_LM32_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_LM32_GNU_VTINHERIT", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* GNU extension to record C++ vtable member usage. */ - HOWTO (R_LM32_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_LM32_GNU_VTENTRY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_16_GOT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_LM32_16_GOT", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_GOTOFF_HI16, /* type */ - 16, /* 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_LM32_GOTOFF_HI16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_GOTOFF_LO16, /* 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_LM32_GOTOFF_LO16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_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_LM32_COPY", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_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_LM32_GLOB_DAT", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_JMP_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_LM32_JMP_SLOT", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_LM32_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_LM32_RELATIVE", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - -}; - -/* Map BFD reloc types to lm32 ELF reloc types. */ - -struct lm32_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_val; - unsigned char elf_reloc_val; -}; - -static const struct lm32_reloc_map lm32_reloc_map[] = -{ - { BFD_RELOC_NONE, R_LM32_NONE }, - { BFD_RELOC_8, R_LM32_8 }, - { BFD_RELOC_16, R_LM32_16 }, - { BFD_RELOC_32, R_LM32_32 }, - { BFD_RELOC_HI16, R_LM32_HI16 }, - { BFD_RELOC_LO16, R_LM32_LO16 }, - { BFD_RELOC_GPREL16, R_LM32_GPREL16 }, - { BFD_RELOC_LM32_CALL, R_LM32_CALL }, - { BFD_RELOC_LM32_BRANCH, R_LM32_BRANCH }, - { BFD_RELOC_VTABLE_INHERIT, R_LM32_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_LM32_GNU_VTENTRY }, - { BFD_RELOC_LM32_16_GOT, R_LM32_16_GOT }, - { BFD_RELOC_LM32_GOTOFF_HI16, R_LM32_GOTOFF_HI16 }, - { BFD_RELOC_LM32_GOTOFF_LO16, R_LM32_GOTOFF_LO16 }, - { BFD_RELOC_LM32_COPY, R_LM32_COPY }, - { BFD_RELOC_LM32_GLOB_DAT, R_LM32_GLOB_DAT }, - { BFD_RELOC_LM32_JMP_SLOT, R_LM32_JMP_SLOT }, - { BFD_RELOC_LM32_RELATIVE, R_LM32_RELATIVE }, -}; - -static reloc_howto_type * -lm32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - for (i = 0; i < sizeof (lm32_reloc_map) / sizeof (lm32_reloc_map[0]); i++) - if (lm32_reloc_map[i].bfd_reloc_val == code) - return &lm32_elf_howto_table[lm32_reloc_map[i].elf_reloc_val]; - return NULL; -} - -static reloc_howto_type * -lm32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - for (i = 0; - i < sizeof (lm32_elf_howto_table) / sizeof (lm32_elf_howto_table[0]); - i++) - if (lm32_elf_howto_table[i].name != NULL - && strcasecmp (lm32_elf_howto_table[i].name, r_name) == 0) - return &lm32_elf_howto_table[i]; - - return NULL; -} - - -/* Set the howto pointer for an Lattice Mico32 ELF reloc. */ - -static void -lm32_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, - arelent *cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_LM32_max); - cache_ptr->howto = &lm32_elf_howto_table[r_type]; -} - -/* Set the right machine number for an Lattice Mico32 ELF file. */ - -static bfd_boolean -lm32_elf_object_p (bfd *abfd) -{ - return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32); -} - -/* Set machine type flags just before file is written out. */ - -static void -lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) -{ - elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32; - elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH; - switch (bfd_get_mach (abfd)) - { - case bfd_mach_lm32: - elf_elfheader (abfd)->e_flags |= E_LM32_MACH; - break; - default: - abort (); - } -} - -/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a - dangerous relocation. */ - -static bfd_boolean -lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) -{ - unsigned int count; - asymbol **sym; - unsigned int i; - - /* If we've already figured out what GP will be, just return it. */ - *pgp = _bfd_get_gp_value (output_bfd); - if (*pgp) - return TRUE; - - count = bfd_get_symcount (output_bfd); - sym = bfd_get_outsymbols (output_bfd); - - /* The linker script will have created a symbol named `_gp' with the - appropriate value. */ - if (sym == NULL) - i = count; - else - { - for (i = 0; i < count; i++, sym++) - { - const char *name; - - name = bfd_asymbol_name (*sym); - if (*name == '_' && strcmp (name, "_gp") == 0) - { - *pgp = bfd_asymbol_value (*sym); - _bfd_set_gp_value (output_bfd, *pgp); - break; - } - } - } - - if (i >= count) - { - /* Only get the error once. */ - *pgp = 4; - _bfd_set_gp_value (output_bfd, *pgp); - return FALSE; - } - - return TRUE; -} - -/* We have to figure out the gp value, so that we can adjust the - symbol value correctly. We look up the symbol _gp in the output - BFD. If we can't find it, we're stuck. We cache it in the ELF - target data. We don't need to adjust the symbol value for an - external symbol if we are producing relocatable output. */ - -static bfd_reloc_status_type -lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, - char **error_message, bfd_vma *pgp) -{ - if (bfd_is_und_section (symbol->section) && !relocatable) - { - *pgp = 0; - return bfd_reloc_undefined; - } - - *pgp = _bfd_get_gp_value (output_bfd); - if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0)) - { - if (relocatable) - { - /* Make up a value. */ - *pgp = symbol->section->output_section->vma + 0x4000; - _bfd_set_gp_value (output_bfd, *pgp); - } - else if (!lm32_elf_assign_gp (output_bfd, pgp)) - { - *error_message = - (char *) - _("global pointer relative relocation when _gp not defined"); - return bfd_reloc_dangerous; - } - } - - return bfd_reloc_ok; -} - -static bfd_reloc_status_type -lm32_elf_do_gprel_relocate (bfd *abfd, - reloc_howto_type *howto, - asection *input_section ATTRIBUTE_UNUSED, - bfd_byte *data, - bfd_vma offset, - bfd_vma symbol_value, - bfd_vma addend) -{ - return _bfd_final_link_relocate (howto, abfd, input_section, - data, offset, symbol_value, addend); -} - -static bfd_reloc_status_type -lm32_elf_gprel_reloc (bfd *abfd, - arelent *reloc_entry, - asymbol *symbol, - void *data, - asection *input_section, - bfd *output_bfd, - char **msg) -{ - bfd_vma relocation; - bfd_vma gp; - bfd_reloc_status_type r; - - if (output_bfd != (bfd *) NULL - && (symbol->flags & BSF_SECTION_SYM) == 0 - && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) - { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; - } - - if (output_bfd != NULL) - return bfd_reloc_ok; - - relocation = symbol->value - + symbol->section->output_section->vma + symbol->section->output_offset; - - if ((r = - lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok) - { - relocation = relocation + reloc_entry->addend - gp; - reloc_entry->addend = 0; - if ((signed) relocation < -32768 || (signed) relocation > 32767) - { - *msg = _("global pointer relative address out of range"); - r = bfd_reloc_outofrange; - } - else - { - r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto, - input_section, - data, reloc_entry->address, - relocation, reloc_entry->addend); - } - } - - return r; -} - -/* Find the segment number in which OSEC, and output section, is - located. */ - -static unsigned -_lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec) -{ - struct elf_segment_map *m; - Elf_Internal_Phdr *p; - - /* Find the segment that contains the output_section. */ - for (m = elf_seg_map (output_bfd), p = elf_tdata (output_bfd)->phdr; - m != NULL; - m = m->next, p++) - { - int i; - - for (i = m->count - 1; i >= 0; i--) - if (m->sections[i] == osec) - break; - - if (i >= 0) - break; - } - - return p - elf_tdata (output_bfd)->phdr; -} - -/* Determine if an output section is read-only. */ - -inline static bfd_boolean -_lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec) -{ - unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec); - - return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); -} - -/* Relocate a section */ - -static bfd_boolean -lm32_elf_relocate_section (bfd *output_bfd, - struct bfd_link_info *info, - bfd *input_bfd, - asection *input_section, - bfd_byte *contents, - Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **local_sections) -{ - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - Elf_Internal_Rela *rel, *relend; - struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info); - bfd *dynobj; - bfd_vma *local_got_offsets; - asection *sgot; - - if (htab == NULL) - return FALSE; - - dynobj = htab->root.dynobj; - local_got_offsets = elf_local_got_offsets (input_bfd); - - sgot = htab->sgot; - - 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++) - { - reloc_howto_type *howto; - unsigned int r_type; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - struct elf_link_hash_entry *h; - bfd_vma relocation; - bfd_vma gp; - bfd_reloc_status_type r; - const char *name = NULL; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - - if (r_type == R_LM32_GNU_VTENTRY - || r_type == R_LM32_GNU_VTINHERIT ) - continue; - - h = NULL; - sym = NULL; - sec = NULL; - - howto = lm32_elf_howto_table + r_type; - - if (r_symndx < symtab_hdr->sh_info) - { - /* It's a local symbol. */ - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - name = bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name); - name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; - } - else - { - /* It's a global symbol. */ - bfd_boolean unresolved_reloc; - 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); - name = h->root.root.string; - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - if (info->relocatable) - { - /* 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 (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) - continue; - - /* If partial_inplace, we need to store any additional addend - back in the section. */ - if (! howto->partial_inplace) - continue; - - /* Shouldn't reach here. */ - abort (); - r = bfd_reloc_ok; - } - else - { - switch (howto->type) - { - case R_LM32_GPREL16: - if (!lm32_elf_assign_gp (output_bfd, &gp)) - r = bfd_reloc_dangerous; - else - { - relocation = relocation + rel->r_addend - gp; - rel->r_addend = 0; - if ((signed)relocation < -32768 || (signed)relocation > 32767) - r = bfd_reloc_outofrange; - else - { - r = _bfd_final_link_relocate (howto, input_bfd, - input_section, contents, - rel->r_offset, relocation, - rel->r_addend); - } - } - break; - case R_LM32_16_GOT: - /* Relocation is to the entry for this symbol in the global - offset table. */ - BFD_ASSERT (sgot != NULL); - if (h != NULL) - { - bfd_boolean dyn; - bfd_vma off; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - dyn = htab->root.dynamic_sections_created; - if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) - || (info->shared - && (info->symbolic - || h->dynindx == -1 - || h->forced_local) - && h->def_regular)) - { - /* This is actually a static link, or it is a - -Bsymbolic link and the symbol is defined - locally, or the symbol was forced to be local - because of a version file. 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 .rela.got - relocation entry to initialize the value. This - is done in the finish_dynamic_symbol routine. */ - if ((off & 1) != 0) - off &= ~1; - else - { - /* Write entry in GOT */ - bfd_put_32 (output_bfd, relocation, - sgot->contents + off); - /* Create entry in .rofixup pointing to GOT entry. */ - if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak) - { - _lm32fdpic_add_rofixup (output_bfd, - lm32fdpic_fixup32_section - (info), - sgot->output_section->vma - + sgot->output_offset - + off); - } - /* Mark GOT entry as having been written. */ - h->got.offset |= 1; - } - } - - relocation = sgot->output_offset + off; - } - else - { - bfd_vma off; - bfd_byte *loc; - - BFD_ASSERT (local_got_offsets != NULL - && local_got_offsets[r_symndx] != (bfd_vma) -1); - - /* Get offset into GOT table. */ - 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 processed this entry. */ - if ((off & 1) != 0) - off &= ~1; - else - { - /* Write entry in GOT. */ - bfd_put_32 (output_bfd, relocation, sgot->contents + off); - /* Create entry in .rofixup pointing to GOT entry. */ - if (IS_FDPIC (output_bfd)) - { - _lm32fdpic_add_rofixup (output_bfd, - lm32fdpic_fixup32_section - (info), - sgot->output_section->vma - + sgot->output_offset - + off); - } - - if (info->shared) - { - asection *srelgot; - Elf_Internal_Rela outrel; - - /* We need to generate a R_LM32_RELATIVE reloc - for the dynamic linker. */ - srelgot = bfd_get_linker_section (dynobj, - ".rela.got"); - BFD_ASSERT (srelgot != NULL); - - outrel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + off); - outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); - outrel.r_addend = relocation; - loc = srelgot->contents; - loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); - ++srelgot->reloc_count; - } - - local_got_offsets[r_symndx] |= 1; - } - - - relocation = sgot->output_offset + off; - } - - /* Addend should be zero. */ - if (rel->r_addend != 0) - (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT")); - - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - rel->r_offset, - relocation, - rel->r_addend); - break; - - case R_LM32_GOTOFF_LO16: - case R_LM32_GOTOFF_HI16: - /* Relocation is offset from GOT. */ - BFD_ASSERT (sgot != NULL); - relocation -= sgot->output_section->vma; - /* Account for sign-extension. */ - if ((r_type == R_LM32_GOTOFF_HI16) - && ((relocation + rel->r_addend) & 0x8000)) - rel->r_addend += 0x10000; - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - rel->r_offset, - relocation, - rel->r_addend); - break; - - case R_LM32_32: - if (IS_FDPIC (output_bfd)) - { - if ((!h) || (h && h->root.type != bfd_link_hash_undefweak)) - { - /* Only create .rofixup entries for relocs in loadable sections. */ - if ((bfd_get_section_flags (output_bfd, input_section->output_section) - & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) - - { - /* Check address to be modified is writable. */ - if (_lm32fdpic_osec_readonly_p (output_bfd, - input_section - ->output_section)) - { - info->callbacks->warning - (info, - _("cannot emit dynamic relocations in read-only section"), - name, input_bfd, input_section, rel->r_offset); - return FALSE; - } - /* Create entry in .rofixup section. */ - _lm32fdpic_add_rofixup (output_bfd, - lm32fdpic_fixup32_section (info), - input_section->output_section->vma - + input_section->output_offset - + rel->r_offset); - } - } - } - /* Fall through. */ - - default: - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - rel->r_offset, - relocation, - rel->r_addend); - break; - } - } - - if (r != bfd_reloc_ok) - { - const char *msg = NULL; - arelent bfd_reloc; - - lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel); - howto = bfd_reloc.howto; - - 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); - } - - switch (r) - { - case bfd_reloc_overflow: - if ((h != NULL) - && (h->root.type == bfd_link_hash_undefweak)) - break; - if (! ((*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; -} - -static asection * -lm32_elf_gc_mark_hook (asection *sec, - struct bfd_link_info *info, - Elf_Internal_Rela *rel, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - if (h != NULL) - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_LM32_GNU_VTINHERIT: - case R_LM32_GNU_VTENTRY: - return NULL; - } - - return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); -} - -static bfd_boolean -lm32_elf_gc_sweep_hook (bfd *abfd, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sec, - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) -{ - /* Update the got entry reference counts for the section being removed. */ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - bfd_signed_vma *local_got_refcounts; - const Elf_Internal_Rela *rel, *relend; - - 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; - - 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; - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_LM32_16_GOT: - if (h != NULL) - { - if (h->got.refcount > 0) - h->got.refcount--; - } - else - { - if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) - local_got_refcounts[r_symndx]--; - } - break; - - default: - break; - } - } - return TRUE; -} - -/* Look through the relocs for a section during the first phase. */ - -static bfd_boolean -lm32_elf_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, **sym_hashes_end; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - struct elf_lm32_link_hash_table *htab; - bfd *dynobj; - - if (info->relocatable) - return TRUE; - - 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; - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - dynobj = htab->root.dynobj; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - int r_type; - struct elf_link_hash_entry *h; - unsigned long r_symndx; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - 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; - - /* PR15323, ref flags aren't set for references in the same - object. */ - h->root.non_ir_ref = 1; - } - - /* Some relocs require a global offset table. */ - if (htab->sgot == NULL) - { - switch (r_type) - { - case R_LM32_16_GOT: - case R_LM32_GOTOFF_HI16: - case R_LM32_GOTOFF_LO16: - if (dynobj == NULL) - htab->root.dynobj = dynobj = abfd; - if (! create_got_section (dynobj, info)) - return FALSE; - break; - } - } - - /* Some relocs require a rofixup table. */ - if (IS_FDPIC (abfd)) - { - switch (r_type) - { - case R_LM32_32: - /* FDPIC requires a GOT if there is a .rofixup section - (Normal ELF doesn't). */ - if (dynobj == NULL) - htab->root.dynobj = dynobj = abfd; - if (! create_got_section (dynobj, info)) - return FALSE; - /* Create .rofixup section */ - if (htab->sfixup32 == NULL) - { - if (! create_rofixup_section (dynobj, info)) - return FALSE; - } - break; - case R_LM32_16_GOT: - case R_LM32_GOTOFF_HI16: - case R_LM32_GOTOFF_LO16: - /* Create .rofixup section. */ - if (htab->sfixup32 == NULL) - { - if (dynobj == NULL) - htab->root.dynobj = dynobj = abfd; - if (! create_rofixup_section (dynobj, info)) - return FALSE; - } - break; - } - } - - switch (r_type) - { - case R_LM32_16_GOT: - if (h != NULL) - h->got.refcount += 1; - 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); - local_got_refcounts = bfd_zalloc (abfd, size); - if (local_got_refcounts == NULL) - return FALSE; - elf_local_got_refcounts (abfd) = local_got_refcounts; - } - local_got_refcounts[r_symndx] += 1; - } - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_LM32_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_LM32_GNU_VTENTRY: - if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - - } - } - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -lm32_elf_finish_dynamic_sections (bfd *output_bfd, - struct bfd_link_info *info) -{ - struct elf_lm32_link_hash_table *htab; - bfd *dynobj; - asection *sdyn; - asection *sgot; - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - dynobj = htab->root.dynobj; - - sgot = htab->sgotplt; - sdyn = bfd_get_linker_section (dynobj, ".dynamic"); - - if (htab->root.dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - BFD_ASSERT (sgot != 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; - asection *s; - - bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - - switch (dyn.d_tag) - { - default: - break; - - case DT_PLTGOT: - s = htab->sgot->output_section; - goto get_vma; - case DT_JMPREL: - s = htab->srelplt->output_section; - get_vma: - BFD_ASSERT (s != NULL); - dyn.d_un.d_ptr = s->vma; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_PLTRELSZ: - s = htab->srelplt->output_section; - BFD_ASSERT (s != NULL); - dyn.d_un.d_val = s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - - case DT_RELASZ: - /* My reading of the SVR4 ABI indicates that the - procedure linkage table relocs (DT_JMPREL) should be - included in the overall relocs (DT_RELA). This is - what Solaris does. However, UnixWare can not handle - that case. Therefore, we override the DT_RELASZ entry - here to make it not include the JMPREL relocs. Since - the linker script arranges for .rela.plt to follow all - other relocation sections, we don't have to worry - about changing the DT_RELA entry. */ - if (htab->srelplt != NULL) - { - s = htab->srelplt->output_section; - dyn.d_un.d_val -= s->size; - } - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - } - } - - /* Fill in the first entry in the procedure linkage table. */ - splt = htab->splt; - if (splt && splt->size > 0) - { - if (info->shared) - { - bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); - bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); - bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); - bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); - bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); - } - else - { - unsigned long addr; - /* addr = .got + 4 */ - addr = sgot->output_section->vma + sgot->output_offset + 4; - bfd_put_32 (output_bfd, - PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), - splt->contents); - bfd_put_32 (output_bfd, - PLT0_ENTRY_WORD1 | (addr & 0xffff), - splt->contents + 4); - bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); - bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); - bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); - } - - elf_section_data (splt->output_section)->this_hdr.sh_entsize = - PLT_ENTRY_SIZE; - } - } - - /* Fill in the first three entries in the global offset table. */ - if (sgot && 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); - - /* FIXME: This can be null if create_dynamic_sections wasn't called. */ - if (elf_section_data (sgot->output_section) != NULL) - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - } - - if (lm32fdpic_fixup32_section (info)) - { - struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; - bfd_vma got_value = hgot->root.u.def.value - + hgot->root.u.def.section->output_section->vma - + hgot->root.u.def.section->output_offset; - struct bfd_link_hash_entry *hend; - - /* Last entry is pointer to GOT. */ - _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value); - - /* Check we wrote enough entries. */ - if (lm32fdpic_fixup32_section (info)->size - != (lm32fdpic_fixup32_section (info)->reloc_count * 4)) - { - (*_bfd_error_handler) - ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d", - lm32fdpic_fixup32_section (info)->size/4, - lm32fdpic_fixup32_section (info)->reloc_count); - return FALSE; - } - - hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", - FALSE, FALSE, TRUE); - if (hend - && (hend->type == bfd_link_hash_defined - || hend->type == bfd_link_hash_defweak)) - { - bfd_vma value = - lm32fdpic_fixup32_section (info)->output_section->vma - + lm32fdpic_fixup32_section (info)->output_offset - + lm32fdpic_fixup32_section (info)->size - - hend->u.def.section->output_section->vma - - hend->u.def.section->output_offset; - BFD_ASSERT (hend->u.def.value == value); - if (hend->u.def.value != value) - { - (*_bfd_error_handler) - ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value); - return FALSE; - } - } - } - - return TRUE; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static bfd_boolean -lm32_elf_finish_dynamic_symbol (bfd *output_bfd, - struct bfd_link_info *info, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - struct elf_lm32_link_hash_table *htab; - bfd_byte *loc; - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - if (h->plt.offset != (bfd_vma) -1) - { - asection *splt; - asection *sgot; - asection *srela; - - bfd_vma plt_index; - bfd_vma got_offset; - Elf_Internal_Rela rela; - - /* This symbol has an entry in the procedure linkage table. Set - it up. */ - BFD_ASSERT (h->dynindx != -1); - - splt = htab->splt; - sgot = htab->sgotplt; - srela = htab->srelplt; - BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); - - /* 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 / PLT_ENTRY_SIZE - 1; - - /* Get the offset into the .got table of the entry that - corresponds to this function. Each .got entry is 4 bytes. - The first three are reserved. */ - got_offset = (plt_index + 3) * 4; - - /* Fill in the entry in the procedure linkage table. */ - if (! info->shared) - { - /* TODO */ - } - else - { - /* TODO */ - } - - /* Fill in the entry in the global offset table. */ - bfd_put_32 (output_bfd, - (splt->output_section->vma - + splt->output_offset - + h->plt.offset - + 12), /* same offset */ - sgot->contents + got_offset); - - /* Fill in the entry in the .rela.plt section. */ - rela.r_offset = (sgot->output_section->vma - + sgot->output_offset - + got_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT); - rela.r_addend = 0; - loc = srela->contents; - loc += plt_index * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, 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 (h->got.offset != (bfd_vma) -1) - { - asection *sgot; - asection *srela; - Elf_Internal_Rela rela; - - /* This symbol has an entry in the global offset table. Set it - up. */ - sgot = htab->sgot; - srela = htab->srelgot; - BFD_ASSERT (sgot != NULL && srela != NULL); - - rela.r_offset = (sgot->output_section->vma - + sgot->output_offset - + (h->got.offset &~ 1)); - - /* If this is a -Bsymbolic link, and the symbol is defined - locally, we just want to emit a RELATIVE reloc. Likewise if - the symbol was forced to be local because of a version file. - The entry in the global offset table will already have been - initialized in the relocate_section function. */ - if (info->shared - && (info->symbolic - || h->dynindx == -1 - || h->forced_local) - && h->def_regular) - { - rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); - rela.r_addend = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - else - { - BFD_ASSERT ((h->got.offset & 1) == 0); - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT); - rela.r_addend = 0; - } - - loc = srela->contents; - loc += srela->reloc_count * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); - ++srela->reloc_count; - } - - if (h->needs_copy) - { - asection *s; - Elf_Internal_Rela rela; - - /* This symbols 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_linker_section (htab->root.dynobj, ".rela.bss"); - BFD_ASSERT (s != NULL); - - rela.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY); - rela.r_addend = 0; - loc = s->contents; - loc += s->reloc_count * sizeof (Elf32_External_Rela); - bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); - ++s->reloc_count; - } - - /* Mark some specially defined symbols as absolute. */ - if (h == htab->root.hdynamic || h == htab->root.hgot) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -static enum elf_reloc_type_class -lm32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, - const asection *rel_sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *rela) -{ - switch ((int) ELF32_R_TYPE (rela->r_info)) - { - case R_LM32_RELATIVE: return reloc_class_relative; - case R_LM32_JMP_SLOT: return reloc_class_plt; - case R_LM32_COPY: return reloc_class_copy; - default: return reloc_class_normal; - } -} - -/* 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 -lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *h) -{ - struct elf_lm32_link_hash_table *htab; - struct elf_lm32_link_hash_entry *eh; - struct elf_lm32_dyn_relocs *p; - bfd *dynobj; - asection *s; - - 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))); - - /* 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->needs_plt) - { - if (! info->shared - && !h->def_dynamic - && !h->ref_dynamic - && h->root.type != bfd_link_hash_undefweak - && h->root.type != bfd_link_hash_undefined) - { - /* This case can occur if we saw a PLT reloc in an input - file, but the symbol was never referred to by a dynamic - object. In such a case, we don't actually need to build - a procedure linkage table, and we can just do a PCREL - reloc instead. */ - h->plt.offset = (bfd_vma) -1; - h->needs_plt = 0; - } - - return TRUE; - } - else - h->plt.offset = (bfd_vma) -1; - - /* 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; - } - - /* 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. */ - if (info->shared) - return TRUE; - - /* If there are no references to this symbol that do not use the - GOT, we don't need to generate a copy reloc. */ - if (!h->non_got_ref) - return TRUE; - - /* If -z nocopyreloc was given, we won't generate them either. */ - if (info->nocopyreloc) - { - h->non_got_ref = 0; - return TRUE; - } - - eh = (struct elf_lm32_link_hash_entry *) h; - for (p = eh->dyn_relocs; p != NULL; p = p->next) - { - s = p->sec->output_section; - if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) - break; - } - - /* If we didn't find any dynamic relocs in sections which needs the - copy reloc, then we'll be keeping the dynamic relocs and avoiding - the copy reloc. */ - if (p == NULL) - { - h->non_got_ref = 0; - 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. */ - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - s = htab->sdynbss; - BFD_ASSERT (s != NULL); - - /* We must generate a R_LM32_COPY reloc to tell the dynamic linker - to copy the initial value out of the dynamic object and into the - runtime process image. We need to remember the offset into the - .rela.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) - { - asection *srel; - - srel = htab->srelbss; - BFD_ASSERT (srel != NULL); - srel->size += sizeof (Elf32_External_Rela); - h->needs_copy = 1; - } - - return _bfd_elf_adjust_dynamic_copy (h, s); -} - -/* 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 elf_lm32_link_hash_table *htab; - struct elf_lm32_link_hash_entry *eh; - struct elf_lm32_dyn_relocs *p; - - if (h->root.type == bfd_link_hash_indirect) - return TRUE; - - info = (struct bfd_link_info *) inf; - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - eh = (struct elf_lm32_link_hash_entry *) h; - - 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 (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, 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 += PLT_ENTRY_SIZE; - - h->plt.offset = s->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 room for this entry. */ - s->size += PLT_ENTRY_SIZE; - - /* We also need to make an entry in the .got.plt section, which - will be placed in the .got section by the linker script. */ - htab->sgotplt->size += 4; - - /* We also need to make an entry in the .rel.plt section. */ - htab->srelplt->size += sizeof (Elf32_External_Rela); - } - 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; - - /* 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; - } - - s = htab->sgot; - - h->got.offset = s->size; - s->size += 4; - dyn = htab->root.dynamic_sections_created; - if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) - htab->srelgot->size += sizeof (Elf32_External_Rela); - } - else - h->got.offset = (bfd_vma) -1; - - if (eh->dyn_relocs == 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) - { - if (h->def_regular - && (h->forced_local - || info->symbolic)) - { - struct elf_lm32_dyn_relocs **pp; - - for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) - { - p->count -= p->pc_count; - p->pc_count = 0; - if (p->count == 0) - *pp = p->next; - else - pp = &p->next; - } - } - - /* Also discard relocs on undefined weak syms with non-default - visibility. */ - if (eh->dyn_relocs != NULL - && h->root.type == bfd_link_hash_undefweak) - { - if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) - eh->dyn_relocs = NULL; - - /* Make sure 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 - { - /* 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->dyn_relocs = NULL; - - keep: ; - } - - /* Finally, allocate space. */ - for (p = eh->dyn_relocs; p != NULL; p = p->next) - { - asection *sreloc = elf_section_data (p->sec)->sreloc; - sreloc->size += p->count * sizeof (Elf32_External_Rela); - } - - return TRUE; -} - -/* Find any dynamic relocs that apply to read-only sections. */ - -static bfd_boolean -readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) -{ - struct elf_lm32_link_hash_entry *eh; - struct elf_lm32_dyn_relocs *p; - - eh = (struct elf_lm32_link_hash_entry *) h; - for (p = eh->dyn_relocs; p != NULL; p = p->next) - { - asection *s = p->sec->output_section; - - if (s != NULL && (s->flags & SEC_READONLY) != 0) - { - 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 -lm32_elf_size_dynamic_sections (bfd *output_bfd, - struct bfd_link_info *info) -{ - struct elf_lm32_link_hash_table *htab; - bfd *dynobj; - asection *s; - bfd_boolean relocs; - bfd *ibfd; - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - dynobj = htab->root.dynobj; - BFD_ASSERT (dynobj != NULL); - - if (htab->root.dynamic_sections_created) - { - /* Set the contents of the .interp section to the interpreter. */ - if (info->executable) - { - s = bfd_get_linker_section (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; - 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 elf_lm32_dyn_relocs *p; - - for (p = ((struct elf_lm32_dyn_relocs *) - elf_section_data (s)->local_dynrel); - p != NULL; - p = p->next) - { - if (! bfd_is_abs_section (p->sec) - && bfd_is_abs_section (p->sec->output_section)) - { - /* Input section has been discarded, either because - it is a copy of a linkonce section or due to - linker script /DISCARD/, so we'll be discarding - the relocs too. */ - } - else if (p->count != 0) - { - srel = elf_section_data (p->sec)->sreloc; - srel->size += p->count * sizeof (Elf32_External_Rela); - if ((p->sec->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; - s = htab->sgot; - srel = htab->srelgot; - for (; local_got < end_local_got; ++local_got) - { - if (*local_got > 0) - { - *local_got = s->size; - s->size += 4; - if (info->shared) - srel->size += sizeof (Elf32_External_Rela); - } - else - *local_got = (bfd_vma) -1; - } - } - - /* Allocate global sym .plt and .got entries, and space for global - sym dynamic relocs. */ - elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); - - /* We now have determined the sizes of the various dynamic sections. - Allocate memory for them. */ - relocs = FALSE; - for (s = dynobj->sections; s != NULL; s = s->next) - { - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - if (s == htab->splt - || s == htab->sgot - || s == htab->sgotplt - || s == htab->sdynbss) - { - /* Strip this section if we don't need it; see the - comment below. */ - } - else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) - { - if (s->size != 0 && s != htab->srelplt) - relocs = TRUE; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - else - /* It's not one of our sections, so don't allocate space. */ - continue; - - if (s->size == 0) - { - /* If we don't need this section, strip it from the - output file. This is mostly to handle .rela.bss and - .rela.plt. We must create both sections in - create_dynamic_sections, because they must be created - before the linker maps input sections to output - sections. The linker does that before - adjust_dynamic_symbol is called, and it is that - function which decides whether anything needs to go - into these sections. */ - s->flags |= SEC_EXCLUDE; - continue; - } - - if ((s->flags & SEC_HAS_CONTENTS) == 0) - continue; - - /* Allocate memory for the section contents. We use bfd_zalloc - here in case unused entries are not reclaimed before the - section's contents are written out. This should not happen, - but this way if it does, we get a R_LM32_NONE reloc instead - of garbage. */ - s->contents = bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - return FALSE; - } - - if (htab->root.dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in lm32_elf_finish_dynamic_sections, but we - must add the entries now so that we get the correct size for - the .dynamic section. The DT_DEBUG entry is filled in by the - dynamic linker and used by the debugger. */ -#define add_dynamic_entry(TAG, VAL) \ - _bfd_elf_add_dynamic_entry (info, TAG, VAL) - - if (info->executable) - { - if (! add_dynamic_entry (DT_DEBUG, 0)) - return FALSE; - } - - if (htab->splt->size != 0) - { - if (! add_dynamic_entry (DT_PLTGOT, 0) - || ! add_dynamic_entry (DT_PLTRELSZ, 0) - || ! add_dynamic_entry (DT_PLTREL, DT_RELA) - || ! add_dynamic_entry (DT_JMPREL, 0)) - return FALSE; - } - - if (relocs) - { - if (! add_dynamic_entry (DT_RELA, 0) - || ! add_dynamic_entry (DT_RELASZ, 0) - || ! add_dynamic_entry (DT_RELAENT, - sizeof (Elf32_External_Rela))) - return FALSE; - - /* If any dynamic relocs apply to a read-only section, - then we need a DT_TEXTREL entry. */ - if ((info->flags & DF_TEXTREL) == 0) - elf_link_hash_traverse (&htab->root, readonly_dynrelocs, - info); - - if ((info->flags & DF_TEXTREL) != 0) - { - if (! add_dynamic_entry (DT_TEXTREL, 0)) - return FALSE; - } - } - } -#undef add_dynamic_entry - - /* Allocate .rofixup section. */ - if (IS_FDPIC (output_bfd)) - { - struct weak_symbol_list *list_start = NULL, *list_end = NULL; - int rgot_weak_count = 0; - int r32_count = 0; - int rgot_count = 0; - /* Look for deleted sections. */ - for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) - { - for (s = ibfd->sections; s != NULL; s = s->next) - { - if (s->reloc_count) - { - /* Count relocs that need .rofixup entires. */ - Elf_Internal_Rela *internal_relocs, *end; - internal_relocs = elf_section_data (s)->relocs; - if (internal_relocs == NULL) - internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE)); - if (internal_relocs != NULL) - { - end = internal_relocs + s->reloc_count; - while (internal_relocs < end) - { - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; - struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); - unsigned long r_symndx; - struct elf_link_hash_entry *h; - - symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (ibfd); - r_symndx = ELF32_R_SYM (internal_relocs->r_info); - h = NULL; - if (r_symndx < symtab_hdr->sh_info) - { - } - 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; - } - - /* Don't generate entries for weak symbols. */ - if (!h || (h && h->root.type != bfd_link_hash_undefweak)) - { - if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0)) - { - switch (ELF32_R_TYPE (internal_relocs->r_info)) - { - case R_LM32_32: - r32_count++; - break; - case R_LM32_16_GOT: - rgot_count++; - break; - } - } - } - else - { - struct weak_symbol_list *current, *new_entry; - /* Is this symbol already in the list? */ - for (current = list_start; current; current = current->next) - { - if (!strcmp (current->name, h->root.root.string)) - break; - } - if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC)) - { - /* Will this have an entry in the GOT. */ - if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT) - { - /* Create a new entry. */ - new_entry = malloc (sizeof (struct weak_symbol_list)); - if (!new_entry) - return FALSE; - new_entry->name = h->root.root.string; - new_entry->next = NULL; - /* Add to list */ - if (list_start == NULL) - { - list_start = new_entry; - list_end = new_entry; - } - else - { - list_end->next = new_entry; - list_end = new_entry; - } - /* Increase count of undefined weak symbols in the got. */ - rgot_weak_count++; - } - } - } - internal_relocs++; - } - } - else - return FALSE; - } - } - } - /* Free list. */ - while (list_start) - { - list_end = list_start->next; - free (list_start); - list_start = list_end; - } - - /* Size sections. */ - lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4; - if (lm32fdpic_fixup32_section (info)->size == 0) - lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE; - else - { - lm32fdpic_fixup32_section (info)->contents = - bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size); - if (lm32fdpic_fixup32_section (info)->contents == NULL) - return FALSE; - } - } - - return TRUE; -} - -/* Create dynamic sections when linking against a dynamic object. */ - -static bfd_boolean -lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) -{ - struct elf_lm32_link_hash_table *htab; - flagword flags, pltflags; - asection *s; - const struct elf_backend_data *bed = get_elf_backend_data (abfd); - int ptralign = 2; /* 32bit */ - - htab = lm32_elf_hash_table (info); - if (htab == NULL) - return FALSE; - - /* Make sure we have a GOT - For the case where we have a dynamic object - but none of the relocs in check_relocs */ - if (! create_got_section (abfd, info)) - return FALSE; - if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL)) - { - if (! create_rofixup_section (abfd, info)) - return FALSE; - } - - /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and - .rel[a].bss sections. */ - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - - pltflags = flags; - pltflags |= SEC_CODE; - if (bed->plt_not_loaded) - pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); - if (bed->plt_readonly) - pltflags |= SEC_READONLY; - - s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); - htab->splt = s; - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) - return FALSE; - - if (bed->want_plt_sym) - { - /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the - .plt section. */ - struct bfd_link_hash_entry *bh = NULL; - struct elf_link_hash_entry *h; - - if (! (_bfd_generic_link_add_one_symbol - (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, - (bfd_vma) 0, NULL, FALSE, - get_elf_backend_data (abfd)->collect, &bh))) - return FALSE; - h = (struct elf_link_hash_entry *) bh; - h->def_regular = 1; - h->type = STT_OBJECT; - htab->root.hplt = h; - - if (info->shared - && ! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - s = bfd_make_section_anyway_with_flags (abfd, - bed->default_use_rela_p - ? ".rela.plt" : ".rel.plt", - flags | SEC_READONLY); - htab->srelplt = s; - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - - if (htab->sgot == NULL - && ! create_got_section (abfd, info)) - return FALSE; - - if (bed->want_dynbss) - { - /* The .dynbss section is a place to put symbols which are defined - by dynamic objects, are referenced by regular objects, and are - not functions. We must allocate space for them in the process - image and use a R_*_COPY reloc to tell the dynamic linker to - initialize them at run time. The linker script puts the .dynbss - section into the .bss section of the final image. */ - s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", - SEC_ALLOC | SEC_LINKER_CREATED); - htab->sdynbss = s; - if (s == NULL) - return FALSE; - /* The .rel[a].bss section holds copy relocs. This section is not - normally needed. We need to create it here, though, so that the - linker will map it to an output section. We can't just create it - only if we need it, because we will not know whether we need it - until we have seen all the input files, and the first time the - main linker code calls BFD after examining all the input files - (size_dynamic_sections) the input sections have already been - mapped to the output sections. If the section turns out not to - be needed, we can discard it later. We will never need this - section when generating a shared object, since they do not use - copy relocs. */ - if (! info->shared) - { - s = bfd_make_section_anyway_with_flags (abfd, - (bed->default_use_rela_p - ? ".rela.bss" : ".rel.bss"), - flags | SEC_READONLY); - htab->srelbss = s; - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - } - } - - return TRUE; -} - -/* Copy the extra info we tack onto an elf_link_hash_entry. */ - -static void -lm32_elf_copy_indirect_symbol (struct bfd_link_info *info, - struct elf_link_hash_entry *dir, - struct elf_link_hash_entry *ind) -{ - struct elf_lm32_link_hash_entry * edir; - struct elf_lm32_link_hash_entry * eind; - - edir = (struct elf_lm32_link_hash_entry *) dir; - eind = (struct elf_lm32_link_hash_entry *) ind; - - if (eind->dyn_relocs != NULL) - { - if (edir->dyn_relocs != NULL) - { - struct elf_lm32_dyn_relocs **pp; - struct elf_lm32_dyn_relocs *p; - - /* Add reloc counts against the indirect sym to the direct sym - list. Merge any entries against the same section. */ - for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) - { - struct elf_lm32_dyn_relocs *q; - - for (q = edir->dyn_relocs; q != NULL; q = q->next) - if (q->sec == p->sec) - { - q->pc_count += p->pc_count; - q->count += p->count; - *pp = p->next; - break; - } - if (q == NULL) - pp = &p->next; - } - *pp = edir->dyn_relocs; - } - - edir->dyn_relocs = eind->dyn_relocs; - eind->dyn_relocs = NULL; - } - - _bfd_elf_link_hash_copy_indirect (info, dir, ind); -} - -static bfd_boolean -lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) -{ - if (!info->relocatable) - { - if (!bfd_elf_stack_segment_size (output_bfd, info, - "__stacksize", DEFAULT_STACK_SIZE)) - return FALSE; - - asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); - if (sec) - sec->size = info->stacksize >= 0 ? info->stacksize : 0; - } - - return TRUE; -} - -static bfd_boolean -lm32_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - BFD_ASSERT (!elf_flags_init (obfd) - || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); - - elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; - elf_flags_init (obfd) = TRUE; - - /* Copy object attributes. */ - _bfd_elf_copy_obj_attributes (ibfd, obfd); - - return TRUE; -} - - -static bfd_boolean -lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) -{ - unsigned i; - - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - if (! lm32_elf_copy_private_bfd_data (ibfd, obfd)) - return FALSE; - - if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr - || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) - return TRUE; - - /* Copy the stack size. */ - for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) - if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) - { - Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; - - for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) - if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) - { - memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); - - /* Rewrite the phdrs, since we're only called after they were first written. */ - if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) - ->s->sizeof_ehdr, SEEK_SET) != 0 - || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, - elf_elfheader (obfd)->e_phnum) != 0) - return FALSE; - break; - } - - break; - } - - return TRUE; -} - - -#define ELF_ARCH bfd_arch_lm32 -#define ELF_TARGET_ID LM32_ELF_DATA -#define ELF_MACHINE_CODE EM_LATTICEMICO32 -#define ELF_MAXPAGESIZE 0x1000 - -#define TARGET_BIG_SYM bfd_elf32_lm32_vec -#define TARGET_BIG_NAME "elf32-lm32" - -#define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup -#define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup -#define elf_info_to_howto lm32_info_to_howto_rela -#define elf_info_to_howto_rel 0 -#define elf_backend_rela_normal 1 -#define elf_backend_object_p lm32_elf_object_p -#define elf_backend_final_write_processing lm32_elf_final_write_processing -#define elf_backend_stack_align 8 -#define elf_backend_can_gc_sections 1 -#define elf_backend_can_refcount 1 -#define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook -#define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook -#define elf_backend_plt_readonly 1 -#define elf_backend_want_got_plt 1 -#define elf_backend_want_plt_sym 0 -#define elf_backend_got_header_size 12 -#define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create -#define elf_backend_check_relocs lm32_elf_check_relocs -#define elf_backend_reloc_type_class lm32_elf_reloc_type_class -#define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol -#define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections -#define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) -#define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections -#define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections -#define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol -#define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol -#define elf_backend_relocate_section lm32_elf_relocate_section - -#include "elf32-target.h" - -#undef ELF_MAXPAGESIZE -#define ELF_MAXPAGESIZE 0x4000 - - -#undef TARGET_BIG_SYM -#define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec -#undef TARGET_BIG_NAME -#define TARGET_BIG_NAME "elf32-lm32fdpic" -#undef elf32_bed -#define elf32_bed elf32_lm32fdpic_bed - -#undef elf_backend_always_size_sections -#define elf_backend_always_size_sections lm32_elf_always_size_sections -#undef bfd_elf32_bfd_copy_private_bfd_data -#define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data - -#include "elf32-target.h" |