7084 lines
211 KiB
C
7084 lines
211 KiB
C
/* MIPS-specific support for 64-bit ELF
|
||
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
|
||
Free Software Foundation, Inc.
|
||
Ian Lance Taylor, Cygnus Support
|
||
Linker support added by Mark Mitchell, CodeSourcery, LLC.
|
||
<mark@codesourcery.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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* This file supports the 64-bit MIPS ELF ABI.
|
||
|
||
The MIPS 64-bit ELF ABI uses an unusual reloc format. This file
|
||
overrides the usual ELF reloc handling, and handles reading and
|
||
writing the relocations here. */
|
||
|
||
/* TODO: Many things are unsupported, even if there is some code for it
|
||
. (which was mostly stolen from elf32-mips.c and slightly adapted).
|
||
.
|
||
. - Relocation handling for REL relocs is wrong in many cases and
|
||
. generally untested.
|
||
. - Relocation handling for RELA relocs related to GOT support are
|
||
. also likely to be wrong.
|
||
. - Support for MIPS16 is only partially implemented.
|
||
. - Embedded PIC is only partially implemented (is it needed?).
|
||
. - Combined relocs with RSS_* entries are unsupported.
|
||
. - The whole GOT handling for NewABI is missing, some parts of
|
||
. the OldABI version is still lying around and shold be removed.
|
||
*/
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
#include "aout/ar.h"
|
||
#include "bfdlink.h"
|
||
#include "genlink.h"
|
||
#include "elf-bfd.h"
|
||
#include "elf/mips.h"
|
||
|
||
/* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to
|
||
use ECOFF. However, we support it anyhow for an easier changeover. */
|
||
#include "coff/sym.h"
|
||
#include "coff/symconst.h"
|
||
#include "coff/internal.h"
|
||
#include "coff/ecoff.h"
|
||
/* The 64 bit versions of the mdebug data structures are in alpha.h. */
|
||
#include "coff/alpha.h"
|
||
#define ECOFF_SIGNED_64
|
||
#include "ecoffswap.h"
|
||
|
||
struct mips_elf64_link_hash_entry;
|
||
|
||
static void mips_elf64_swap_reloc_in
|
||
PARAMS ((bfd *, const Elf64_Mips_External_Rel *,
|
||
Elf64_Mips_Internal_Rel *));
|
||
static void mips_elf64_swap_reloca_in
|
||
PARAMS ((bfd *, const Elf64_Mips_External_Rela *,
|
||
Elf64_Mips_Internal_Rela *));
|
||
static void mips_elf64_swap_reloc_out
|
||
PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *,
|
||
Elf64_Mips_External_Rel *));
|
||
static void mips_elf64_swap_reloca_out
|
||
PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *,
|
||
Elf64_Mips_External_Rela *));
|
||
static void mips_elf64_be_swap_reloc_in
|
||
PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *));
|
||
static void mips_elf64_be_swap_reloc_out
|
||
PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *));
|
||
static void mips_elf64_be_swap_reloca_in
|
||
PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *));
|
||
static void mips_elf64_be_swap_reloca_out
|
||
PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *));
|
||
static bfd_vma mips_elf64_high PARAMS ((bfd_vma));
|
||
static bfd_vma mips_elf64_higher PARAMS ((bfd_vma));
|
||
static bfd_vma mips_elf64_highest PARAMS ((bfd_vma));
|
||
static reloc_howto_type *mips_elf64_reloc_type_lookup
|
||
PARAMS ((bfd *, bfd_reloc_code_real_type));
|
||
static void mips_elf64_info_to_howto_rel
|
||
PARAMS ((bfd *, arelent *, Elf64_Internal_Rel *));
|
||
static void mips_elf64_info_to_howto_rela
|
||
PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *));
|
||
static long mips_elf64_get_reloc_upper_bound PARAMS ((bfd *, asection *));
|
||
static boolean mips_elf64_slurp_one_reloc_table
|
||
PARAMS ((bfd *, asection *, asymbol **, const Elf_Internal_Shdr *));
|
||
static boolean mips_elf64_slurp_reloc_table
|
||
PARAMS ((bfd *, asection *, asymbol **, boolean));
|
||
static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR));
|
||
static void mips_elf64_write_rel
|
||
PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR));
|
||
static void mips_elf64_write_rela
|
||
PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR));
|
||
static struct bfd_hash_entry *mips_elf64_link_hash_newfunc
|
||
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
|
||
static bfd_reloc_status_type mips_elf64_hi16_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_higher_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_highest_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_gprel16_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_gprel16_reloca
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_literal_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_gprel32_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_shift6_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type mips_elf64_got16_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static boolean mips_elf64_assign_gp PARAMS ((bfd *, bfd_vma *));
|
||
static bfd_reloc_status_type mips_elf64_final_gp
|
||
PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *));
|
||
static bfd_reloc_status_type gprel16_with_gp
|
||
PARAMS ((bfd *, asymbol *, arelent *, asection *, boolean, PTR, bfd_vma));
|
||
static int mips_elf64_additional_program_headers PARAMS ((bfd *));
|
||
static struct bfd_link_hash_table *mips_elf64_link_hash_table_create
|
||
PARAMS((bfd *));
|
||
static bfd_vma mips_elf64_got_offset_from_index
|
||
PARAMS ((bfd *, bfd *, bfd_vma));
|
||
static struct mips_elf64_got_info *_mips_elf64_got_info
|
||
PARAMS ((bfd *, asection **));
|
||
static bfd_vma mips_elf64_sign_extend PARAMS ((bfd_vma, int));
|
||
static boolean mips_elf64_overflow_p PARAMS ((bfd_vma, int));
|
||
static bfd_vma mips_elf64_global_got_index
|
||
PARAMS ((bfd *, struct elf_link_hash_entry *));
|
||
static boolean mips_elf64_sort_hash_table_f
|
||
PARAMS ((struct mips_elf64_link_hash_entry *, PTR));
|
||
static boolean mips_elf64_sort_hash_table
|
||
PARAMS ((struct bfd_link_info *, unsigned long));
|
||
static void mips_elf64_swap_msym_out
|
||
PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *));
|
||
static bfd_vma mips_elf64_create_local_got_entry
|
||
PARAMS ((bfd *abfd, struct mips_elf64_got_info *, asection *,
|
||
bfd_vma value));
|
||
static bfd_vma mips_elf64_local_got_index
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma));
|
||
static bfd_vma mips_elf64_got_page
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *));
|
||
static bfd_vma mips_elf64_got16_entry
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean));
|
||
static boolean mips_elf64_local_relocation_p
|
||
PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean));
|
||
static const Elf_Internal_Rela *mips_elf64_next_relocation
|
||
PARAMS ((unsigned int, const Elf_Internal_Rela *,
|
||
const Elf_Internal_Rela *));
|
||
static boolean mips_elf64_create_dynamic_relocation
|
||
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *,
|
||
struct mips_elf64_link_hash_entry *, asection *, bfd_vma,
|
||
bfd_vma *, asection *));
|
||
static bfd_reloc_status_type mips_elf64_calculate_relocation
|
||
PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *,
|
||
const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *,
|
||
Elf_Internal_Sym *, asection **, bfd_vma *, const char **,
|
||
boolean *));
|
||
static bfd_vma mips_elf64_obtain_contents
|
||
PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *));
|
||
static boolean mips_elf64_perform_relocation
|
||
PARAMS ((struct bfd_link_info *, reloc_howto_type *,
|
||
const Elf_Internal_Rela *, bfd_vma,
|
||
bfd *, asection *, bfd_byte *, boolean));
|
||
static boolean mips_elf64_relocate_section
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
||
boolean mips_elf64_create_dynamic_sections
|
||
PARAMS ((bfd *, struct bfd_link_info *));
|
||
boolean mips_elf64_adjust_dynamic_symbol
|
||
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *h));
|
||
boolean mips_elf64_always_size_sections
|
||
PARAMS ((bfd *, struct bfd_link_info *));
|
||
static boolean mips_elf64_check_mips16_stubs
|
||
PARAMS ((struct mips_elf64_link_hash_entry *, PTR));
|
||
boolean mips_elf64_size_dynamic_sections
|
||
PARAMS ((bfd *, struct bfd_link_info *));
|
||
boolean mips_elf64_finish_dynamic_symbol
|
||
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
|
||
Elf_Internal_Sym *));
|
||
boolean mips_elf64_finish_dynamic_sections
|
||
PARAMS ((bfd *, struct bfd_link_info *info));
|
||
asection *mips_elf64_gc_mark_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
||
boolean mips_elf64_gc_sweep_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
static boolean mips_elf64_create_got_section
|
||
PARAMS ((bfd *, struct bfd_link_info *));
|
||
static boolean mips_elf64_record_global_got_symbol
|
||
PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *,
|
||
struct mips_elf64_got_info *));
|
||
static asection *mips_elf64_create_msym_section PARAMS((bfd *));
|
||
static void mips_elf64_allocate_dynamic_relocations
|
||
PARAMS ((bfd *, unsigned int));
|
||
static boolean mips_elf64_stub_section_p PARAMS ((bfd *, asection *));
|
||
boolean mips_elf64_check_relocs
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
static boolean mips_elf64_output_extsym
|
||
PARAMS ((struct mips_elf64_link_hash_entry *, PTR));
|
||
static void mips_elf64_swap_gptab_in
|
||
PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *));
|
||
static void mips_elf64_swap_gptab_out
|
||
PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *));
|
||
static int gptab_compare PARAMS ((const PTR, const PTR));
|
||
boolean mips_elf64_final_link PARAMS ((bfd *, struct bfd_link_info *));
|
||
|
||
extern const bfd_target bfd_elf64_bigmips_vec;
|
||
extern const bfd_target bfd_elf64_littlemips_vec;
|
||
|
||
static bfd_vma prev_reloc_addend = 0;
|
||
static bfd_size_type prev_reloc_address = 0;
|
||
|
||
/* Whether we are trying to be compatible with IRIX6 (or little endianers
|
||
which are otherwise IRIX-ABI compliant). */
|
||
#define SGI_COMPAT(abfd) \
|
||
((abfd->xvec == &bfd_elf64_bigmips_vec) \
|
||
|| (abfd->xvec == &bfd_elf64_littlemips_vec) ? true : false)
|
||
|
||
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
|
||
from smaller values. Start with zero, widen, *then* decrement. */
|
||
#define MINUS_ONE (((bfd_vma)0) - 1)
|
||
|
||
/* The number of local .got entries we reserve. */
|
||
#define MIPS_RESERVED_GOTNO (2)
|
||
|
||
/* Instructions which appear in a stub. */
|
||
#define ELF_MIPS_GP_OFFSET(abfd) 0x7ff0
|
||
#define STUB_LW 0xdf998010 /* ld t9,0x8010(gp) */
|
||
#define STUB_MOVE 0x03e07825 /* move t7,ra */
|
||
#define STUB_JALR 0x0320f809 /* jal t9 */
|
||
#define STUB_LI16 0x34180000 /* ori t8,zero,0 */
|
||
#define MIPS_FUNCTION_STUB_SIZE (16)
|
||
|
||
/* The relocation table used for SHT_REL sections. */
|
||
|
||
#define UNUSED_RELOC(num) { num, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
|
||
|
||
static reloc_howto_type mips_elf64_howto_table_rel[] =
|
||
{
|
||
/* No relocation. */
|
||
HOWTO (R_MIPS_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_MIPS_NONE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit relocation. */
|
||
HOWTO (R_MIPS_16, /* 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_MIPS_16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit relocation. */
|
||
HOWTO (R_MIPS_32, /* 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_MIPS_32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit symbol relative relocation. */
|
||
HOWTO (R_MIPS_REL32, /* 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_MIPS_REL32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 26 bit jump address. */
|
||
HOWTO (R_MIPS_26, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
/* This needs complex overflow
|
||
detection, because the upper 36
|
||
bits must match the PC + 4. */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_26", /* name */
|
||
true, /* partial_inplace */
|
||
0x03ffffff, /* src_mask */
|
||
0x03ffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_HI16, /* 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_MIPS_HI16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_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_MIPS_LO16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf64_gprel16_reloc, /* special_function */
|
||
"R_MIPS_GPREL16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to literal section. */
|
||
HOWTO (R_MIPS_LITERAL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf64_literal_reloc, /* special_function */
|
||
"R_MIPS_LITERAL", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to global offset table. */
|
||
HOWTO (R_MIPS_GOT16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf64_got16_reloc, /* special_function */
|
||
"R_MIPS_GOT16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit PC relative reference. */
|
||
HOWTO (R_MIPS_PC16, /* type */
|
||
0, /* 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_MIPS_PC16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 16 bit call through global offset table. */
|
||
/* FIXME: This is not handled correctly. */
|
||
HOWTO (R_MIPS_CALL16, /* 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_MIPS_CALL16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf64_gprel32_reloc, /* special_function */
|
||
"R_MIPS_GPREL32", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
UNUSED_RELOC (13),
|
||
UNUSED_RELOC (14),
|
||
UNUSED_RELOC (15),
|
||
|
||
/* A 5 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT5, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
5, /* bitsize */
|
||
false, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SHIFT5", /* name */
|
||
true, /* partial_inplace */
|
||
0x000007c0, /* src_mask */
|
||
0x000007c0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 6 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT6, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
6, /* bitsize */
|
||
false, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mips_elf64_shift6_reloc, /* special_function */
|
||
"R_MIPS_SHIFT6", /* name */
|
||
true, /* partial_inplace */
|
||
0x000007c4, /* src_mask */
|
||
0x000007c4, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit relocation. */
|
||
HOWTO (R_MIPS_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_64", /* name */
|
||
true, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Displacement in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_DISP, /* 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_MIPS_GOT_DISP", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Displacement to page pointer in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_PAGE, /* 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_MIPS_GOT_PAGE", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Offset from page pointer in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_OFST, /* 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_MIPS_GOT_OFST", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_HI16, /* 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_MIPS_GOT_HI16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_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_MIPS_GOT_LO16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit substraction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_SUB, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SUB", /* name */
|
||
true, /* partial_inplace */
|
||
MINUS_ONE, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_A, /* 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_MIPS_INSERT_A", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction, and change all relocations
|
||
to refer to the old instruction at the address. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_B, /* 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_MIPS_INSERT_B", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Delete a 32 bit instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_DELETE, /* 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_MIPS_DELETE", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Get the higher value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHER, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf64_higher_reloc, /* special_function */
|
||
"R_MIPS_HIGHER", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Get the highest value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHEST, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf64_highest_reloc, /* special_function */
|
||
"R_MIPS_HIGHEST", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_CALL_HI16, /* 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_MIPS_CALL_HI16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_CALL_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_MIPS_CALL_LO16", /* name */
|
||
true, /* partial_inplace */
|
||
0x0000ffff, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Section displacement, used by an associated event location section. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_SCN_DISP, /* 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_MIPS_SCN_DISP", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
HOWTO (R_MIPS_REL16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_REL16", /* name */
|
||
true, /* partial_inplace */
|
||
0xffff, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* These two are obsolete. */
|
||
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
|
||
EMPTY_HOWTO (R_MIPS_PJUMP),
|
||
|
||
/* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
|
||
It must be used for multigot GOT's (and only there). */
|
||
HOWTO (R_MIPS_RELGOT, /* 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_MIPS_RELGOT", /* name */
|
||
true, /* partial_inplace */
|
||
0xffffffff, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Protected jump conversion. This is an optimization hint. No
|
||
relocation is required for correctness. */
|
||
HOWTO (R_MIPS_JALR, /* 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_MIPS_JALR", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x00000000, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
};
|
||
|
||
/* The relocation table used for SHT_RELA sections. */
|
||
|
||
static reloc_howto_type mips_elf64_howto_table_rela[] =
|
||
{
|
||
/* No relocation. */
|
||
HOWTO (R_MIPS_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_MIPS_NONE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit relocation. */
|
||
HOWTO (R_MIPS_16, /* 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_MIPS_16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit relocation. */
|
||
HOWTO (R_MIPS_32, /* 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_MIPS_32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit symbol relative relocation. */
|
||
HOWTO (R_MIPS_REL32, /* 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_MIPS_REL32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 26 bit jump address. */
|
||
HOWTO (R_MIPS_26, /* type */
|
||
2, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
26, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
/* This needs complex overflow
|
||
detection, because the upper 36
|
||
bits must match the PC + 4. */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_26", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x03ffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */
|
||
/* High 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_HI16, /* 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_MIPS_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of symbol value. */
|
||
HOWTO (R_MIPS_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_MIPS_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL16, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf64_gprel16_reloca, /* special_function */
|
||
"R_MIPS_GPREL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to literal section. */
|
||
HOWTO (R_MIPS_LITERAL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
mips_elf64_literal_reloc, /* special_function */
|
||
"R_MIPS_LITERAL", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Reference to global offset table. */
|
||
/* FIXME: This is not handled correctly. */
|
||
HOWTO (R_MIPS_GOT16, /* 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_MIPS_GOT16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 16 bit PC relative reference. */
|
||
HOWTO (R_MIPS_PC16, /* type */
|
||
0, /* 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_MIPS_PC16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
true), /* pcrel_offset */
|
||
|
||
/* 16 bit call through global offset table. */
|
||
/* FIXME: This is not handled correctly. */
|
||
HOWTO (R_MIPS_CALL16, /* 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_MIPS_CALL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 32 bit GP relative reference. */
|
||
HOWTO (R_MIPS_GPREL32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
mips_elf64_gprel32_reloc, /* special_function */
|
||
"R_MIPS_GPREL32", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
UNUSED_RELOC (13),
|
||
UNUSED_RELOC (14),
|
||
UNUSED_RELOC (15),
|
||
|
||
/* A 5 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT5, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
5, /* bitsize */
|
||
false, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SHIFT5", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x000007c0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 6 bit shift field. */
|
||
HOWTO (R_MIPS_SHIFT6, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
6, /* bitsize */
|
||
false, /* pc_relative */
|
||
6, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
mips_elf64_shift6_reloc, /* special_function */
|
||
"R_MIPS_SHIFT6", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x000007c4, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit relocation. */
|
||
HOWTO (R_MIPS_64, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_64", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Displacement in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_DISP, /* 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_MIPS_GOT_DISP", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Displacement to page pointer in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_PAGE, /* 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_MIPS_GOT_PAGE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Offset from page pointer in the global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_OFST, /* 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_MIPS_GOT_OFST", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_HI16, /* 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_MIPS_GOT_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_GOT_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_MIPS_GOT_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* 64 bit substraction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_SUB, /* type */
|
||
0, /* rightshift */
|
||
4, /* size (0 = byte, 1 = short, 2 = long) */
|
||
64, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_SUB", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
MINUS_ONE, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_A, /* 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_MIPS_INSERT_A", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Insert the addend as an instruction, and change all relocations
|
||
to refer to the old instruction at the address. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_INSERT_B, /* 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_MIPS_INSERT_B", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Delete a 32 bit instruction. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_DELETE, /* 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_MIPS_DELETE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Get the higher value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHER, /* 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_MIPS_HIGHER", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Get the highest value of a 64 bit addend. */
|
||
HOWTO (R_MIPS_HIGHEST, /* 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_MIPS_HIGHEST", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* High 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_CALL_HI16, /* 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_MIPS_CALL_HI16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Low 16 bits of displacement in global offset table. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_CALL_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_MIPS_CALL_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Section displacement, used by an associated event location section. */
|
||
/* FIXME: Not handled correctly. */
|
||
HOWTO (R_MIPS_SCN_DISP, /* 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_MIPS_SCN_DISP", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
HOWTO (R_MIPS_REL16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_MIPS_REL16", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* These two are obsolete. */
|
||
EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
|
||
EMPTY_HOWTO (R_MIPS_PJUMP),
|
||
|
||
/* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
|
||
It must be used for multigot GOT's (and only there). */
|
||
HOWTO (R_MIPS_RELGOT, /* 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_MIPS_RELGOT", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* Protected jump conversion. This is an optimization hint. No
|
||
relocation is required for correctness. */
|
||
HOWTO (R_MIPS_JALR, /* 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_MIPS_JALR", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0x00000000, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
};
|
||
|
||
/* Swap in a MIPS 64-bit Rel reloc. */
|
||
|
||
static void
|
||
mips_elf64_swap_reloc_in (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf64_Mips_External_Rel *src;
|
||
Elf64_Mips_Internal_Rel *dst;
|
||
{
|
||
dst->r_offset = H_GET_64 (abfd, src->r_offset);
|
||
dst->r_sym = H_GET_32 (abfd, src->r_sym);
|
||
dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
|
||
dst->r_type3 = H_GET_8 (abfd, src->r_type3);
|
||
dst->r_type2 = H_GET_8 (abfd, src->r_type2);
|
||
dst->r_type = H_GET_8 (abfd, src->r_type);
|
||
}
|
||
|
||
/* Swap in a MIPS 64-bit Rela reloc. */
|
||
|
||
static void
|
||
mips_elf64_swap_reloca_in (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf64_Mips_External_Rela *src;
|
||
Elf64_Mips_Internal_Rela *dst;
|
||
{
|
||
dst->r_offset = H_GET_64 (abfd, src->r_offset);
|
||
dst->r_sym = H_GET_32 (abfd, src->r_sym);
|
||
dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
|
||
dst->r_type3 = H_GET_8 (abfd, src->r_type3);
|
||
dst->r_type2 = H_GET_8 (abfd, src->r_type2);
|
||
dst->r_type = H_GET_8 (abfd, src->r_type);
|
||
dst->r_addend = H_GET_S64 (abfd, src->r_addend);
|
||
}
|
||
|
||
/* Swap out a MIPS 64-bit Rel reloc. */
|
||
|
||
static void
|
||
mips_elf64_swap_reloc_out (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf64_Mips_Internal_Rel *src;
|
||
Elf64_Mips_External_Rel *dst;
|
||
{
|
||
H_PUT_64 (abfd, src->r_offset, dst->r_offset);
|
||
H_PUT_32 (abfd, src->r_sym, dst->r_sym);
|
||
H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
|
||
H_PUT_8 (abfd, src->r_type3, dst->r_type3);
|
||
H_PUT_8 (abfd, src->r_type2, dst->r_type2);
|
||
H_PUT_8 (abfd, src->r_type, dst->r_type);
|
||
}
|
||
|
||
/* Swap out a MIPS 64-bit Rela reloc. */
|
||
|
||
static void
|
||
mips_elf64_swap_reloca_out (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf64_Mips_Internal_Rela *src;
|
||
Elf64_Mips_External_Rela *dst;
|
||
{
|
||
H_PUT_64 (abfd, src->r_offset, dst->r_offset);
|
||
H_PUT_32 (abfd, src->r_sym, dst->r_sym);
|
||
H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
|
||
H_PUT_8 (abfd, src->r_type3, dst->r_type3);
|
||
H_PUT_8 (abfd, src->r_type2, dst->r_type2);
|
||
H_PUT_8 (abfd, src->r_type, dst->r_type);
|
||
H_PUT_S64 (abfd, src->r_addend, dst->r_addend);
|
||
}
|
||
|
||
/* Swap in a MIPS 64-bit Rel reloc. */
|
||
|
||
static void
|
||
mips_elf64_be_swap_reloc_in (abfd, src, dst)
|
||
bfd *abfd;
|
||
const bfd_byte *src;
|
||
Elf_Internal_Rel *dst;
|
||
{
|
||
Elf64_Mips_Internal_Rel mirel;
|
||
|
||
mips_elf64_swap_reloc_in (abfd,
|
||
(const Elf64_Mips_External_Rel *) src,
|
||
&mirel);
|
||
|
||
dst[0].r_offset = mirel.r_offset;
|
||
dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type);
|
||
dst[1].r_offset = mirel.r_offset;
|
||
dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2);
|
||
dst[2].r_offset = mirel.r_offset;
|
||
dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3);
|
||
}
|
||
|
||
/* Swap in a MIPS 64-bit Rela reloc. */
|
||
|
||
static void
|
||
mips_elf64_be_swap_reloca_in (abfd, src, dst)
|
||
bfd *abfd;
|
||
const bfd_byte *src;
|
||
Elf_Internal_Rela *dst;
|
||
{
|
||
Elf64_Mips_Internal_Rela mirela;
|
||
|
||
mips_elf64_swap_reloca_in (abfd,
|
||
(const Elf64_Mips_External_Rela *) src,
|
||
&mirela);
|
||
|
||
dst[0].r_offset = mirela.r_offset;
|
||
dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type);
|
||
dst[0].r_addend = mirela.r_addend;
|
||
dst[1].r_offset = mirela.r_offset;
|
||
dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2);
|
||
dst[1].r_addend = 0;
|
||
dst[2].r_offset = mirela.r_offset;
|
||
dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3);
|
||
dst[2].r_addend = 0;
|
||
}
|
||
|
||
/* Swap out a MIPS 64-bit Rel reloc. */
|
||
|
||
static void
|
||
mips_elf64_be_swap_reloc_out (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf_Internal_Rel *src;
|
||
bfd_byte *dst;
|
||
{
|
||
Elf64_Mips_Internal_Rel mirel;
|
||
|
||
mirel.r_offset = src[0].r_offset;
|
||
BFD_ASSERT(src[0].r_offset == src[1].r_offset);
|
||
BFD_ASSERT(src[0].r_offset == src[2].r_offset);
|
||
|
||
mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
|
||
mirel.r_sym = ELF64_R_SYM (src[0].r_info);
|
||
mirel.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info);
|
||
mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
|
||
mirel.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info);
|
||
|
||
mips_elf64_swap_reloc_out (abfd, &mirel,
|
||
(Elf64_Mips_External_Rel *) dst);
|
||
}
|
||
|
||
/* Swap out a MIPS 64-bit Rela reloc. */
|
||
|
||
static void
|
||
mips_elf64_be_swap_reloca_out (abfd, src, dst)
|
||
bfd *abfd;
|
||
const Elf_Internal_Rela *src;
|
||
bfd_byte *dst;
|
||
{
|
||
Elf64_Mips_Internal_Rela mirela;
|
||
|
||
mirela.r_offset = src[0].r_offset;
|
||
BFD_ASSERT(src[0].r_offset == src[1].r_offset);
|
||
BFD_ASSERT(src[0].r_offset == src[2].r_offset);
|
||
|
||
mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
|
||
mirela.r_sym = ELF64_R_SYM (src[0].r_info);
|
||
mirela.r_addend = src[0].r_addend;
|
||
BFD_ASSERT(src[1].r_addend == 0);
|
||
BFD_ASSERT(src[2].r_addend == 0);
|
||
|
||
mirela.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info);
|
||
mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
|
||
mirela.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info);
|
||
|
||
mips_elf64_swap_reloca_out (abfd, &mirela,
|
||
(Elf64_Mips_External_Rela *) dst);
|
||
}
|
||
|
||
/* Calculate the %high function. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_high (value)
|
||
bfd_vma value;
|
||
{
|
||
return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff;
|
||
}
|
||
|
||
/* Calculate the %higher function. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_higher (value)
|
||
bfd_vma value;
|
||
{
|
||
return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff;
|
||
}
|
||
|
||
/* Calculate the %highest function. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_highest (value)
|
||
bfd_vma value;
|
||
{
|
||
return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff;
|
||
}
|
||
|
||
/* Do a R_MIPS_HI16 relocation. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_hi16_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
/* If we're relocating, and this is an external symbol, we don't
|
||
want to change anything. */
|
||
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 (((reloc_entry->addend & 0xffff) + 0x8000) & ~0xffff)
|
||
reloc_entry->addend += 0x8000;
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
/* Do a R_MIPS_HIGHER relocation. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_higher_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
/* If we're relocating, and this is an external symbol, we don't
|
||
want to change anything. */
|
||
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 (((reloc_entry->addend & 0xffffffff) + 0x80008000)
|
||
& ~0xffffffff)
|
||
reloc_entry->addend += 0x80008000;
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
/* Do a R_MIPS_HIGHEST relocation. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_highest_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
/* If we're relocating, and this is an external symbol, we don't
|
||
want to change anything. */
|
||
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 (((reloc_entry->addend & 0xffffffffffff) + 0x800080008000)
|
||
& ~0xffffffffffff)
|
||
reloc_entry->addend += 0x800080008000;
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
/* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
|
||
table used for PIC code. If the symbol is an external symbol, the
|
||
instruction is modified to contain the offset of the appropriate
|
||
entry in the global offset table. If the symbol is a section
|
||
symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
|
||
addends are combined to form the real addend against the section
|
||
symbol; the GOT16 is modified to contain the offset of an entry in
|
||
the global offset table, and the LO16 is modified to offset it
|
||
appropriately. Thus an offset larger than 16 bits requires a
|
||
modified value in the global offset table.
|
||
|
||
This implementation suffices for the assembler, but the linker does
|
||
not yet know how to create global offset tables. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_got16_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
/* If we're relocating, and this an external symbol, we don't want
|
||
to change anything. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* If we're relocating, and this is a local symbol, we can handle it
|
||
just like HI16. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
return mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
|
||
abort ();
|
||
}
|
||
|
||
/* Set the GP value for OUTPUT_BFD. Returns false if this is a
|
||
dangerous relocation. */
|
||
|
||
static boolean
|
||
mips_elf64_assign_gp (output_bfd, pgp)
|
||
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 == (asymbol **) NULL)
|
||
i = count;
|
||
else
|
||
{
|
||
for (i = 0; i < count; i++, sym++)
|
||
{
|
||
register 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 relocateable output. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
|
||
bfd *output_bfd;
|
||
asymbol *symbol;
|
||
boolean relocateable;
|
||
char **error_message;
|
||
bfd_vma *pgp;
|
||
{
|
||
if (bfd_is_und_section (symbol->section)
|
||
&& ! relocateable)
|
||
{
|
||
*pgp = 0;
|
||
return bfd_reloc_undefined;
|
||
}
|
||
|
||
*pgp = _bfd_get_gp_value (output_bfd);
|
||
if (*pgp == 0
|
||
&& (! relocateable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0))
|
||
{
|
||
if (relocateable)
|
||
{
|
||
/* Make up a value. */
|
||
*pgp = symbol->section->output_section->vma + 0x4000;
|
||
_bfd_set_gp_value (output_bfd, *pgp);
|
||
}
|
||
else if (!mips_elf64_assign_gp (output_bfd, pgp))
|
||
{
|
||
*error_message =
|
||
(char *) _("GP relative relocation when _gp not defined");
|
||
return bfd_reloc_dangerous;
|
||
}
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
|
||
become the offset from the gp register. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
|
||
/* If we're relocating, and this is an external symbol with no
|
||
addend, we don't want to change anything. We will only have an
|
||
addend if this is a newly created reloc, not read from an ELF
|
||
file. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
relocateable = true;
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message,
|
||
&gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
|
||
return gprel16_with_gp (abfd, symbol, reloc_entry, input_section,
|
||
relocateable, data, gp);
|
||
}
|
||
|
||
static bfd_reloc_status_type
|
||
gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
|
||
gp)
|
||
bfd *abfd;
|
||
asymbol *symbol;
|
||
arelent *reloc_entry;
|
||
asection *input_section;
|
||
boolean relocateable;
|
||
PTR data;
|
||
bfd_vma gp;
|
||
{
|
||
bfd_vma relocation;
|
||
unsigned long insn;
|
||
unsigned long val;
|
||
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
relocation += symbol->section->output_section->vma;
|
||
relocation += symbol->section->output_offset;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
/* Set val to the offset into the section or symbol. */
|
||
if (reloc_entry->howto->src_mask == 0)
|
||
{
|
||
/* This case occurs with the 64-bit MIPS ELF ABI. */
|
||
val = reloc_entry->addend;
|
||
}
|
||
else
|
||
{
|
||
val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff;
|
||
if (val & 0x8000)
|
||
val -= 0x10000;
|
||
}
|
||
|
||
/* Adjust val for the final section location and GP value. If we
|
||
are producing relocateable output, we don't want to do this for
|
||
an external symbol. */
|
||
if (! relocateable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
val += relocation - gp;
|
||
|
||
insn = (insn & ~0xffff) | (val & 0xffff);
|
||
bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
if (relocateable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
else if ((long) val >= 0x8000 || (long) val < -0x8000)
|
||
return bfd_reloc_overflow;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_GPREL16 RELA relocation. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_gprel16_reloca (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_vma gp;
|
||
|
||
/* This works only for NewABI. */
|
||
BFD_ASSERT (reloc_entry->howto->src_mask == 0);
|
||
|
||
/* If we're relocating, and this is an external symbol with no
|
||
addend, we don't want to change anything. We will only have an
|
||
addend if this is a newly created reloc, not read from an ELF
|
||
file. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
||
{
|
||
reloc_entry->address += input_section->output_offset;
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
relocateable = true;
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
}
|
||
|
||
if (prev_reloc_address != reloc_entry->address)
|
||
prev_reloc_address = reloc_entry->address;
|
||
else
|
||
{
|
||
mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message,
|
||
&gp);
|
||
prev_reloc_addend = reloc_entry->addend + reloc_entry->address - gp;
|
||
if (symbol->flags & BSF_LOCAL)
|
||
prev_reloc_addend += _bfd_get_gp_value (abfd);
|
||
/*fprintf(stderr, "Addend: %lx, Next Addend: %lx\n", reloc_entry->addend, prev_reloc_addend);*/
|
||
}
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_LITERAL relocation. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
/* If we're relocating, and this is an external symbol, we don't
|
||
want to change anything. */
|
||
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;
|
||
}
|
||
|
||
/* FIXME: The entries in the .lit8 and .lit4 sections should be merged.
|
||
Currently we simply call mips_elf64_gprel16_reloc. */
|
||
return mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data,
|
||
input_section, output_bfd, error_message);
|
||
}
|
||
|
||
/* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset
|
||
from the gp register? XXX */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_gprel32_reloc (abfd,
|
||
reloc_entry,
|
||
symbol,
|
||
data,
|
||
input_section,
|
||
output_bfd,
|
||
error_message)
|
||
bfd *abfd;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message;
|
||
{
|
||
boolean relocateable;
|
||
bfd_reloc_status_type ret;
|
||
bfd_vma gp;
|
||
bfd_vma relocation;
|
||
unsigned long val;
|
||
|
||
/* If we're relocating, and this is an external symbol with no
|
||
addend, we don't want to change anything. We will only have an
|
||
addend if this is a newly created reloc, not read from an ELF
|
||
file. */
|
||
if (output_bfd != (bfd *) NULL
|
||
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
||
&& reloc_entry->addend == 0)
|
||
{
|
||
*error_message = (char *)
|
||
_("32bits gp relative relocation occurs for an external symbol");
|
||
return bfd_reloc_outofrange;
|
||
}
|
||
|
||
if (output_bfd != (bfd *) NULL)
|
||
{
|
||
relocateable = true;
|
||
gp = _bfd_get_gp_value (output_bfd);
|
||
}
|
||
else
|
||
{
|
||
relocateable = false;
|
||
output_bfd = symbol->section->output_section->owner;
|
||
|
||
ret = mips_elf64_final_gp (output_bfd, symbol, relocateable,
|
||
error_message, &gp);
|
||
if (ret != bfd_reloc_ok)
|
||
return ret;
|
||
}
|
||
|
||
if (bfd_is_com_section (symbol->section))
|
||
relocation = 0;
|
||
else
|
||
relocation = symbol->value;
|
||
|
||
relocation += symbol->section->output_section->vma;
|
||
relocation += symbol->section->output_offset;
|
||
|
||
if (reloc_entry->address > input_section->_cooked_size)
|
||
return bfd_reloc_outofrange;
|
||
|
||
if (reloc_entry->howto->src_mask == 0)
|
||
{
|
||
/* This case arises with the 64-bit MIPS ELF ABI. */
|
||
val = 0;
|
||
}
|
||
else
|
||
val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
/* Set val to the offset into the section or symbol. */
|
||
val += reloc_entry->addend;
|
||
|
||
/* Adjust val for the final section location and GP value. If we
|
||
are producing relocateable output, we don't want to do this for
|
||
an external symbol. */
|
||
if (! relocateable
|
||
|| (symbol->flags & BSF_SECTION_SYM) != 0)
|
||
val += relocation - gp;
|
||
|
||
bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
|
||
|
||
if (relocateable)
|
||
reloc_entry->address += input_section->output_offset;
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
|
||
the rest is at bits 6-10. The bitpos alredy got right by the howto. */
|
||
|
||
bfd_reloc_status_type
|
||
mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *reloc_entry;
|
||
asymbol *symbol;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection *input_section;
|
||
bfd *output_bfd;
|
||
char **error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
/* If we're relocating, and this is an external symbol, we don't
|
||
want to change anything. */
|
||
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;
|
||
}
|
||
|
||
reloc_entry->addend = (reloc_entry->addend & 0x00007c0)
|
||
| (reloc_entry->addend & 0x00000800) >> 9;
|
||
|
||
return bfd_reloc_continue;
|
||
}
|
||
|
||
static int
|
||
mips_elf64_additional_program_headers (abfd)
|
||
bfd *abfd;
|
||
{
|
||
int ret = 0;
|
||
|
||
/* See if we need a PT_MIPS_OPTIONS segment. */
|
||
if (bfd_get_section_by_name (abfd, ".MIPS.options"))
|
||
++ret;
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Given a BFD reloc type, return a howto structure. */
|
||
|
||
static reloc_howto_type *
|
||
mips_elf64_reloc_type_lookup (abfd, code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
/* FIXME: We default to RELA here instead of choosing the right
|
||
relocation variant. */
|
||
reloc_howto_type *howto_table = mips_elf64_howto_table_rela;
|
||
|
||
switch (code)
|
||
{
|
||
case BFD_RELOC_NONE:
|
||
return &howto_table[R_MIPS_NONE];
|
||
case BFD_RELOC_16:
|
||
return &howto_table[R_MIPS_16];
|
||
case BFD_RELOC_32:
|
||
return &howto_table[R_MIPS_32];
|
||
case BFD_RELOC_64:
|
||
case BFD_RELOC_CTOR:
|
||
/* We need to handle these specially. Select the right
|
||
relocation (R_MIPS_32 or R_MIPS_64) based on the
|
||
size of addresses on this architecture. */
|
||
if (bfd_arch_bits_per_address (abfd) == 32)
|
||
return &howto_table[R_MIPS_32];
|
||
else
|
||
return &howto_table[R_MIPS_64];
|
||
|
||
case BFD_RELOC_16_PCREL:
|
||
return &howto_table[R_MIPS_PC16];
|
||
case BFD_RELOC_HI16_S:
|
||
return &howto_table[R_MIPS_HI16];
|
||
case BFD_RELOC_LO16:
|
||
return &howto_table[R_MIPS_LO16];
|
||
case BFD_RELOC_GPREL16:
|
||
return &howto_table[R_MIPS_GPREL16];
|
||
case BFD_RELOC_GPREL32:
|
||
return &howto_table[R_MIPS_GPREL32];
|
||
case BFD_RELOC_MIPS_JMP:
|
||
return &howto_table[R_MIPS_26];
|
||
case BFD_RELOC_MIPS_LITERAL:
|
||
return &howto_table[R_MIPS_LITERAL];
|
||
case BFD_RELOC_MIPS_GOT16:
|
||
return &howto_table[R_MIPS_GOT16];
|
||
case BFD_RELOC_MIPS_CALL16:
|
||
return &howto_table[R_MIPS_CALL16];
|
||
case BFD_RELOC_MIPS_SHIFT5:
|
||
return &howto_table[R_MIPS_SHIFT5];
|
||
case BFD_RELOC_MIPS_SHIFT6:
|
||
return &howto_table[R_MIPS_SHIFT6];
|
||
case BFD_RELOC_MIPS_GOT_DISP:
|
||
return &howto_table[R_MIPS_GOT_DISP];
|
||
case BFD_RELOC_MIPS_GOT_PAGE:
|
||
return &howto_table[R_MIPS_GOT_PAGE];
|
||
case BFD_RELOC_MIPS_GOT_OFST:
|
||
return &howto_table[R_MIPS_GOT_OFST];
|
||
case BFD_RELOC_MIPS_GOT_HI16:
|
||
return &howto_table[R_MIPS_GOT_HI16];
|
||
case BFD_RELOC_MIPS_GOT_LO16:
|
||
return &howto_table[R_MIPS_GOT_LO16];
|
||
case BFD_RELOC_MIPS_SUB:
|
||
return &howto_table[R_MIPS_SUB];
|
||
case BFD_RELOC_MIPS_INSERT_A:
|
||
return &howto_table[R_MIPS_INSERT_A];
|
||
case BFD_RELOC_MIPS_INSERT_B:
|
||
return &howto_table[R_MIPS_INSERT_B];
|
||
case BFD_RELOC_MIPS_DELETE:
|
||
return &howto_table[R_MIPS_DELETE];
|
||
case BFD_RELOC_MIPS_HIGHEST:
|
||
return &howto_table[R_MIPS_HIGHEST];
|
||
case BFD_RELOC_MIPS_HIGHER:
|
||
return &howto_table[R_MIPS_HIGHER];
|
||
case BFD_RELOC_MIPS_CALL_HI16:
|
||
return &howto_table[R_MIPS_CALL_HI16];
|
||
case BFD_RELOC_MIPS_CALL_LO16:
|
||
return &howto_table[R_MIPS_CALL_LO16];
|
||
case BFD_RELOC_MIPS_SCN_DISP:
|
||
return &howto_table[R_MIPS_SCN_DISP];
|
||
case BFD_RELOC_MIPS_REL16:
|
||
return &howto_table[R_MIPS_REL16];
|
||
/* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
|
||
case BFD_RELOC_MIPS_RELGOT:
|
||
return &howto_table[R_MIPS_RELGOT];
|
||
case BFD_RELOC_MIPS_JALR:
|
||
return &howto_table[R_MIPS_JALR];
|
||
/*
|
||
case BFD_RELOC_MIPS16_JMP:
|
||
return &elf_mips16_jump_howto;
|
||
case BFD_RELOC_MIPS16_GPREL:
|
||
return &elf_mips16_gprel_howto;
|
||
case BFD_RELOC_VTABLE_INHERIT:
|
||
return &elf_mips_gnu_vtinherit_howto;
|
||
case BFD_RELOC_VTABLE_ENTRY:
|
||
return &elf_mips_gnu_vtentry_howto;
|
||
case BFD_RELOC_PCREL_HI16_S:
|
||
return &elf_mips_gnu_rel_hi16;
|
||
case BFD_RELOC_PCREL_LO16:
|
||
return &elf_mips_gnu_rel_lo16;
|
||
case BFD_RELOC_16_PCREL_S2:
|
||
return &elf_mips_gnu_rel16_s2;
|
||
case BFD_RELOC_64_PCREL:
|
||
return &elf_mips_gnu_pcrel64;
|
||
case BFD_RELOC_32_PCREL:
|
||
return &elf_mips_gnu_pcrel32;
|
||
*/
|
||
default:
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
/* Prevent relocation handling by bfd for MIPS ELF64. */
|
||
|
||
static void
|
||
mips_elf64_info_to_howto_rel (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr ATTRIBUTE_UNUSED;
|
||
Elf64_Internal_Rel *dst ATTRIBUTE_UNUSED;
|
||
{
|
||
BFD_ASSERT (0);
|
||
}
|
||
|
||
static void
|
||
mips_elf64_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr ATTRIBUTE_UNUSED;
|
||
Elf64_Internal_Rela *dst ATTRIBUTE_UNUSED;
|
||
{
|
||
BFD_ASSERT (0);
|
||
}
|
||
|
||
/* Since each entry in an SHT_REL or SHT_RELA section can represent up
|
||
to three relocs, we must tell the user to allocate more space. */
|
||
|
||
static long
|
||
mips_elf64_get_reloc_upper_bound (abfd, sec)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asection *sec;
|
||
{
|
||
return (sec->reloc_count * 3 + 1) * sizeof (arelent *);
|
||
}
|
||
|
||
/* Read the relocations from one reloc section. */
|
||
|
||
static boolean
|
||
mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, rel_hdr)
|
||
bfd *abfd;
|
||
asection *asect;
|
||
asymbol **symbols;
|
||
const Elf_Internal_Shdr *rel_hdr;
|
||
{
|
||
PTR allocated = NULL;
|
||
bfd_byte *native_relocs;
|
||
arelent *relents;
|
||
arelent *relent;
|
||
bfd_vma count;
|
||
bfd_vma i;
|
||
int entsize;
|
||
reloc_howto_type *howto_table;
|
||
|
||
allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
|
||
if (allocated == NULL)
|
||
return false;
|
||
|
||
if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
|
||
|| (bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size))
|
||
goto error_return;
|
||
|
||
native_relocs = (bfd_byte *) allocated;
|
||
|
||
relents = asect->relocation + asect->reloc_count;
|
||
|
||
entsize = rel_hdr->sh_entsize;
|
||
BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel)
|
||
|| entsize == sizeof (Elf64_Mips_External_Rela));
|
||
|
||
count = rel_hdr->sh_size / entsize;
|
||
|
||
if (entsize == sizeof (Elf64_Mips_External_Rel))
|
||
howto_table = mips_elf64_howto_table_rel;
|
||
else
|
||
howto_table = mips_elf64_howto_table_rela;
|
||
|
||
relent = relents;
|
||
for (i = 0; i < count; i++, native_relocs += entsize)
|
||
{
|
||
Elf64_Mips_Internal_Rela rela;
|
||
boolean used_sym, used_ssym;
|
||
int ir;
|
||
|
||
if (entsize == sizeof (Elf64_Mips_External_Rela))
|
||
mips_elf64_swap_reloca_in (abfd,
|
||
(Elf64_Mips_External_Rela *) native_relocs,
|
||
&rela);
|
||
else
|
||
{
|
||
Elf64_Mips_Internal_Rel rel;
|
||
|
||
mips_elf64_swap_reloc_in (abfd,
|
||
(Elf64_Mips_External_Rel *) native_relocs,
|
||
&rel);
|
||
rela.r_offset = rel.r_offset;
|
||
rela.r_sym = rel.r_sym;
|
||
rela.r_ssym = rel.r_ssym;
|
||
rela.r_type3 = rel.r_type3;
|
||
rela.r_type2 = rel.r_type2;
|
||
rela.r_type = rel.r_type;
|
||
rela.r_addend = 0;
|
||
}
|
||
|
||
/* Each entry represents up to three actual relocations. */
|
||
|
||
used_sym = false;
|
||
used_ssym = false;
|
||
for (ir = 0; ir < 3; ir++)
|
||
{
|
||
enum elf_mips_reloc_type type;
|
||
|
||
switch (ir)
|
||
{
|
||
default:
|
||
abort ();
|
||
case 0:
|
||
type = (enum elf_mips_reloc_type) rela.r_type;
|
||
break;
|
||
case 1:
|
||
type = (enum elf_mips_reloc_type) rela.r_type2;
|
||
break;
|
||
case 2:
|
||
type = (enum elf_mips_reloc_type) rela.r_type3;
|
||
break;
|
||
}
|
||
|
||
if (type == R_MIPS_NONE)
|
||
{
|
||
/* There are no more relocations in this entry. If this
|
||
is the first entry, we need to generate a dummy
|
||
relocation so that the generic linker knows that
|
||
there has been a break in the sequence of relocations
|
||
applying to a particular address. */
|
||
if (ir == 0)
|
||
{
|
||
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
|
||
relent->address = rela.r_offset;
|
||
else
|
||
relent->address = rela.r_offset - asect->vma;
|
||
relent->addend = 0;
|
||
relent->howto = &howto_table[(int) R_MIPS_NONE];
|
||
++relent;
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* Some types require symbols, whereas some do not. */
|
||
switch (type)
|
||
{
|
||
case R_MIPS_NONE:
|
||
case R_MIPS_LITERAL:
|
||
case R_MIPS_INSERT_A:
|
||
case R_MIPS_INSERT_B:
|
||
case R_MIPS_DELETE:
|
||
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
break;
|
||
|
||
default:
|
||
if (! used_sym)
|
||
{
|
||
if (rela.r_sym == 0)
|
||
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
else
|
||
{
|
||
asymbol **ps, *s;
|
||
|
||
ps = symbols + rela.r_sym - 1;
|
||
s = *ps;
|
||
if ((s->flags & BSF_SECTION_SYM) == 0)
|
||
relent->sym_ptr_ptr = ps;
|
||
else
|
||
relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
|
||
}
|
||
|
||
used_sym = true;
|
||
}
|
||
else if (! used_ssym)
|
||
{
|
||
switch (rela.r_ssym)
|
||
{
|
||
case RSS_UNDEF:
|
||
relent->sym_ptr_ptr =
|
||
bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
break;
|
||
|
||
case RSS_GP:
|
||
case RSS_GP0:
|
||
case RSS_LOC:
|
||
/* FIXME: I think these need to be handled using
|
||
special howto structures. */
|
||
BFD_ASSERT (0);
|
||
break;
|
||
|
||
default:
|
||
BFD_ASSERT (0);
|
||
break;
|
||
}
|
||
|
||
used_ssym = true;
|
||
}
|
||
else
|
||
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
|
||
|
||
break;
|
||
}
|
||
|
||
/* The address of an ELF reloc is section relative for an
|
||
object file, and absolute for an executable file or
|
||
shared library. The address of a BFD reloc is always
|
||
section relative. */
|
||
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
|
||
relent->address = rela.r_offset;
|
||
else
|
||
relent->address = rela.r_offset - asect->vma;
|
||
|
||
relent->addend = rela.r_addend;
|
||
|
||
relent->howto = &howto_table[(int) type];
|
||
|
||
++relent;
|
||
}
|
||
}
|
||
|
||
asect->reloc_count += relent - relents;
|
||
|
||
if (allocated != NULL)
|
||
free (allocated);
|
||
|
||
return true;
|
||
|
||
error_return:
|
||
if (allocated != NULL)
|
||
free (allocated);
|
||
return false;
|
||
}
|
||
|
||
/* Read the relocations. On Irix 6, there can be two reloc sections
|
||
associated with a single data section. */
|
||
|
||
static boolean
|
||
mips_elf64_slurp_reloc_table (abfd, asect, symbols, dynamic)
|
||
bfd *abfd;
|
||
asection *asect;
|
||
asymbol **symbols;
|
||
boolean dynamic;
|
||
{
|
||
bfd_size_type amt;
|
||
struct bfd_elf_section_data * const d = elf_section_data (asect);
|
||
|
||
if (dynamic)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return false;
|
||
}
|
||
|
||
if (asect->relocation != NULL
|
||
|| (asect->flags & SEC_RELOC) == 0
|
||
|| asect->reloc_count == 0)
|
||
return true;
|
||
|
||
/* Allocate space for 3 arelent structures for each Rel structure. */
|
||
amt = asect->reloc_count;
|
||
amt *= 3 * sizeof (arelent);
|
||
asect->relocation = (arelent *) bfd_alloc (abfd, amt);
|
||
if (asect->relocation == NULL)
|
||
return false;
|
||
|
||
/* The slurp_one_reloc_table routine increments reloc_count. */
|
||
asect->reloc_count = 0;
|
||
|
||
if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, &d->rel_hdr))
|
||
return false;
|
||
if (d->rel_hdr2 != NULL)
|
||
{
|
||
if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols,
|
||
d->rel_hdr2))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Write out the relocations. */
|
||
|
||
static void
|
||
mips_elf64_write_relocs (abfd, sec, data)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
PTR data;
|
||
{
|
||
boolean *failedp = (boolean *) data;
|
||
int count;
|
||
Elf_Internal_Shdr *rel_hdr;
|
||
unsigned int idx;
|
||
|
||
/* If we have already failed, don't do anything. */
|
||
if (*failedp)
|
||
return;
|
||
|
||
if ((sec->flags & SEC_RELOC) == 0)
|
||
return;
|
||
|
||
/* The linker backend writes the relocs out itself, and sets the
|
||
reloc_count field to zero to inhibit writing them here. Also,
|
||
sometimes the SEC_RELOC flag gets set even when there aren't any
|
||
relocs. */
|
||
if (sec->reloc_count == 0)
|
||
return;
|
||
|
||
/* We can combine up to three relocs that refer to the same address
|
||
if the latter relocs have no associated symbol. */
|
||
count = 0;
|
||
for (idx = 0; idx < sec->reloc_count; idx++)
|
||
{
|
||
bfd_vma addr;
|
||
unsigned int i;
|
||
|
||
++count;
|
||
|
||
addr = sec->orelocation[idx]->address;
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
arelent *r;
|
||
|
||
if (idx + 1 >= sec->reloc_count)
|
||
break;
|
||
r = sec->orelocation[idx + 1];
|
||
if (r->address != addr
|
||
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|
||
|| (*r->sym_ptr_ptr)->value != 0)
|
||
break;
|
||
|
||
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
|
||
|
||
++idx;
|
||
}
|
||
}
|
||
|
||
rel_hdr = &elf_section_data (sec)->rel_hdr;
|
||
|
||
/* Do the actual relocation. */
|
||
|
||
if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel))
|
||
mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data);
|
||
else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela))
|
||
mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data);
|
||
else
|
||
BFD_ASSERT (0);
|
||
}
|
||
|
||
static void
|
||
mips_elf64_write_rel (abfd, sec, rel_hdr, count, data)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
Elf_Internal_Shdr *rel_hdr;
|
||
int *count;
|
||
PTR data;
|
||
{
|
||
boolean *failedp = (boolean *) data;
|
||
Elf64_Mips_External_Rel *ext_rel;
|
||
unsigned int idx;
|
||
asymbol *last_sym = 0;
|
||
int last_sym_idx = 0;
|
||
|
||
rel_hdr->sh_size = (bfd_vma)(rel_hdr->sh_entsize * *count);
|
||
rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size);
|
||
if (rel_hdr->contents == NULL)
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
|
||
ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents;
|
||
for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++)
|
||
{
|
||
arelent *ptr;
|
||
Elf64_Mips_Internal_Rel int_rel;
|
||
asymbol *sym;
|
||
int n;
|
||
unsigned int i;
|
||
|
||
ptr = sec->orelocation[idx];
|
||
|
||
/* The address of an ELF reloc is section relative for an object
|
||
file, and absolute for an executable file or shared library.
|
||
The address of a BFD reloc is always section relative. */
|
||
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
|
||
int_rel.r_offset = ptr->address;
|
||
else
|
||
int_rel.r_offset = ptr->address + sec->vma;
|
||
|
||
sym = *ptr->sym_ptr_ptr;
|
||
if (sym == last_sym)
|
||
n = last_sym_idx;
|
||
else
|
||
{
|
||
last_sym = sym;
|
||
n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
|
||
if (n < 0)
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
last_sym_idx = n;
|
||
}
|
||
|
||
int_rel.r_sym = n;
|
||
int_rel.r_ssym = RSS_UNDEF;
|
||
|
||
if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
|
||
&& ! _bfd_elf_validate_reloc (abfd, ptr))
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
|
||
int_rel.r_type = ptr->howto->type;
|
||
int_rel.r_type2 = (int) R_MIPS_NONE;
|
||
int_rel.r_type3 = (int) R_MIPS_NONE;
|
||
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
arelent *r;
|
||
|
||
if (idx + 1 >= sec->reloc_count)
|
||
break;
|
||
r = sec->orelocation[idx + 1];
|
||
if (r->address != ptr->address
|
||
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|
||
|| (*r->sym_ptr_ptr)->value != 0)
|
||
break;
|
||
|
||
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
|
||
|
||
if (i == 0)
|
||
int_rel.r_type2 = r->howto->type;
|
||
else
|
||
int_rel.r_type3 = r->howto->type;
|
||
|
||
++idx;
|
||
}
|
||
|
||
mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel);
|
||
}
|
||
|
||
BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents
|
||
== *count);
|
||
}
|
||
|
||
static void
|
||
mips_elf64_write_rela (abfd, sec, rela_hdr, count, data)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
Elf_Internal_Shdr *rela_hdr;
|
||
int *count;
|
||
PTR data;
|
||
{
|
||
boolean *failedp = (boolean *) data;
|
||
Elf64_Mips_External_Rela *ext_rela;
|
||
unsigned int idx;
|
||
asymbol *last_sym = 0;
|
||
int last_sym_idx = 0;
|
||
|
||
rela_hdr->sh_size = (bfd_vma)(rela_hdr->sh_entsize * *count);
|
||
rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
|
||
if (rela_hdr->contents == NULL)
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
|
||
ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents;
|
||
for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++)
|
||
{
|
||
arelent *ptr;
|
||
Elf64_Mips_Internal_Rela int_rela;
|
||
asymbol *sym;
|
||
int n;
|
||
unsigned int i;
|
||
|
||
ptr = sec->orelocation[idx];
|
||
|
||
/* The address of an ELF reloc is section relative for an object
|
||
file, and absolute for an executable file or shared library.
|
||
The address of a BFD reloc is always section relative. */
|
||
if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
|
||
int_rela.r_offset = ptr->address;
|
||
else
|
||
int_rela.r_offset = ptr->address + sec->vma;
|
||
|
||
sym = *ptr->sym_ptr_ptr;
|
||
if (sym == last_sym)
|
||
n = last_sym_idx;
|
||
else
|
||
{
|
||
last_sym = sym;
|
||
n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
|
||
if (n < 0)
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
last_sym_idx = n;
|
||
}
|
||
|
||
int_rela.r_sym = n;
|
||
int_rela.r_addend = ptr->addend;
|
||
int_rela.r_ssym = RSS_UNDEF;
|
||
|
||
if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
|
||
&& ! _bfd_elf_validate_reloc (abfd, ptr))
|
||
{
|
||
*failedp = true;
|
||
return;
|
||
}
|
||
|
||
int_rela.r_type = ptr->howto->type;
|
||
int_rela.r_type2 = (int) R_MIPS_NONE;
|
||
int_rela.r_type3 = (int) R_MIPS_NONE;
|
||
|
||
for (i = 0; i < 2; i++)
|
||
{
|
||
arelent *r;
|
||
|
||
if (idx + 1 >= sec->reloc_count)
|
||
break;
|
||
r = sec->orelocation[idx + 1];
|
||
if (r->address != ptr->address
|
||
|| ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
|
||
|| (*r->sym_ptr_ptr)->value != 0)
|
||
break;
|
||
|
||
/* We can merge the reloc at IDX + 1 with the reloc at IDX. */
|
||
|
||
if (i == 0)
|
||
int_rela.r_type2 = r->howto->type;
|
||
else
|
||
int_rela.r_type3 = r->howto->type;
|
||
|
||
++idx;
|
||
}
|
||
|
||
mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela);
|
||
}
|
||
|
||
BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents
|
||
== *count);
|
||
}
|
||
|
||
/* This structure is used to hold .got information when linking. It
|
||
is stored in the tdata field of the bfd_elf_section_data structure. */
|
||
|
||
struct mips_elf64_got_info
|
||
{
|
||
/* The global symbol in the GOT with the lowest index in the dynamic
|
||
symbol table. */
|
||
struct elf_link_hash_entry *global_gotsym;
|
||
/* The number of global .got entries. */
|
||
unsigned int global_gotno;
|
||
/* The number of local .got entries. */
|
||
unsigned int local_gotno;
|
||
/* The number of local .got entries we have used. */
|
||
unsigned int assigned_gotno;
|
||
};
|
||
|
||
/* The MIPS ELF64 linker needs additional information for each symbol in
|
||
the global hash table. */
|
||
|
||
struct mips_elf64_link_hash_entry
|
||
{
|
||
struct elf_link_hash_entry root;
|
||
|
||
/* External symbol information. */
|
||
EXTR esym;
|
||
|
||
/* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against
|
||
this symbol. */
|
||
unsigned int possibly_dynamic_relocs;
|
||
|
||
/* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against
|
||
a readonly section. */
|
||
boolean readonly_reloc;
|
||
|
||
/* The index of the first dynamic relocation (in the .rel.dyn
|
||
section) against this symbol. */
|
||
unsigned int min_dyn_reloc_index;
|
||
|
||
/* We must not create a stub for a symbol that has relocations
|
||
related to taking the function's address, i.e. any but
|
||
R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition",
|
||
p. 4-20. */
|
||
boolean no_fn_stub;
|
||
|
||
/* If there is a stub that 32 bit functions should use to call this
|
||
16 bit function, this points to the section containing the stub. */
|
||
asection *fn_stub;
|
||
|
||
/* Whether we need the fn_stub; this is set if this symbol appears
|
||
in any relocs other than a 16 bit call. */
|
||
boolean need_fn_stub;
|
||
|
||
/* If there is a stub that 16 bit functions should use to call this
|
||
32 bit function, this points to the section containing the stub. */
|
||
asection *call_stub;
|
||
|
||
/* This is like the call_stub field, but it is used if the function
|
||
being called returns a floating point value. */
|
||
asection *call_fp_stub;
|
||
};
|
||
|
||
/* The mips16 compiler uses a couple of special sections to handle
|
||
floating point arguments.
|
||
|
||
Section names that look like .mips16.fn.FNNAME contain stubs that
|
||
copy floating point arguments from the fp regs to the gp regs and
|
||
then jump to FNNAME. If any 32 bit function calls FNNAME, the
|
||
call should be redirected to the stub instead. If no 32 bit
|
||
function calls FNNAME, the stub should be discarded. We need to
|
||
consider any reference to the function, not just a call, because
|
||
if the address of the function is taken we will need the stub,
|
||
since the address might be passed to a 32 bit function.
|
||
|
||
Section names that look like .mips16.call.FNNAME contain stubs
|
||
that copy floating point arguments from the gp regs to the fp
|
||
regs and then jump to FNNAME. If FNNAME is a 32 bit function,
|
||
then any 16 bit function that calls FNNAME should be redirected
|
||
to the stub instead. If FNNAME is not a 32 bit function, the
|
||
stub should be discarded.
|
||
|
||
.mips16.call.fp.FNNAME sections are similar, but contain stubs
|
||
which call FNNAME and then copy the return value from the fp regs
|
||
to the gp regs. These stubs store the return value in $18 while
|
||
calling FNNAME; any function which might call one of these stubs
|
||
must arrange to save $18 around the call. (This case is not
|
||
needed for 32 bit functions that call 16 bit functions, because
|
||
16 bit functions always return floating point values in both
|
||
$f0/$f1 and $2/$3.)
|
||
|
||
Note that in all cases FNNAME might be defined statically.
|
||
Therefore, FNNAME is not used literally. Instead, the relocation
|
||
information will indicate which symbol the section is for.
|
||
|
||
We record any stubs that we find in the symbol table. */
|
||
|
||
#define FN_STUB ".mips16.fn."
|
||
#define CALL_STUB ".mips16.call."
|
||
#define CALL_FP_STUB ".mips16.call.fp."
|
||
|
||
/* MIPS ELF64 linker hash table. */
|
||
|
||
struct mips_elf64_link_hash_table
|
||
{
|
||
struct elf_link_hash_table root;
|
||
/* This is set if we see any mips16 stub sections. */
|
||
boolean mips16_stubs_seen;
|
||
};
|
||
|
||
/* Look up an entry in a MIPS ELF64 linker hash table. */
|
||
|
||
#define mips_elf64_link_hash_lookup(table, string, create, copy, follow) \
|
||
((struct mips_elf64_link_hash_entry *) \
|
||
elf_link_hash_lookup (&(table)->root, (string), (create), \
|
||
(copy), (follow)))
|
||
|
||
/* Traverse a MIPS ELF linker hash table. */
|
||
|
||
#define mips_elf64_link_hash_traverse(table, func, info) \
|
||
(elf_link_hash_traverse \
|
||
(&(table)->root, \
|
||
(boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
|
||
(info)))
|
||
|
||
/* Get the MIPS ELF64 linker hash table from a link_info structure. */
|
||
|
||
#define mips_elf64_hash_table(p) \
|
||
((struct mips_elf64_link_hash_table *) ((p)->hash))
|
||
|
||
/* Create an entry in a MIPS ELF64 linker hash table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
mips_elf64_link_hash_newfunc (entry, table, string)
|
||
struct bfd_hash_entry *entry;
|
||
struct bfd_hash_table *table;
|
||
const char *string;
|
||
{
|
||
struct mips_elf64_link_hash_entry *ret =
|
||
(struct mips_elf64_link_hash_entry *) entry;
|
||
|
||
/* Allocate the structure if it has not already been allocated by a
|
||
subclass. */
|
||
if (ret == (struct mips_elf64_link_hash_entry *) NULL)
|
||
ret = ((struct mips_elf64_link_hash_entry *)
|
||
bfd_hash_allocate (table,
|
||
sizeof (struct mips_elf64_link_hash_entry)));
|
||
if (ret == (struct mips_elf64_link_hash_entry *) NULL)
|
||
return (struct bfd_hash_entry *) ret;
|
||
|
||
/* Call the allocation method of the superclass. */
|
||
ret = ((struct mips_elf64_link_hash_entry *)
|
||
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
||
table, string));
|
||
if (ret != (struct mips_elf64_link_hash_entry *) NULL)
|
||
{
|
||
/* Set local fields. */
|
||
memset (&ret->esym, 0, sizeof (EXTR));
|
||
/* We use -2 as a marker to indicate that the information has
|
||
not been set. -1 means there is no associated ifd. */
|
||
ret->esym.ifd = -2;
|
||
ret->possibly_dynamic_relocs = 0;
|
||
ret->readonly_reloc = false;
|
||
ret->min_dyn_reloc_index = 0;
|
||
ret->no_fn_stub = false;
|
||
ret->fn_stub = NULL;
|
||
ret->need_fn_stub = false;
|
||
ret->call_stub = NULL;
|
||
ret->call_fp_stub = NULL;
|
||
}
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
/* Create a MIPS ELF64 linker hash table. */
|
||
|
||
struct bfd_link_hash_table *
|
||
mips_elf64_link_hash_table_create (abfd)
|
||
bfd *abfd;
|
||
{
|
||
struct mips_elf64_link_hash_table *ret;
|
||
|
||
ret = ((struct mips_elf64_link_hash_table *)
|
||
bfd_alloc (abfd, sizeof (struct mips_elf64_link_hash_table)));
|
||
if (ret == (struct mips_elf64_link_hash_table *) NULL)
|
||
return NULL;
|
||
|
||
if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
|
||
mips_elf64_link_hash_newfunc))
|
||
{
|
||
bfd_release (abfd, ret);
|
||
return NULL;
|
||
}
|
||
|
||
ret->mips16_stubs_seen = false;
|
||
|
||
return &ret->root.root;
|
||
}
|
||
|
||
/* Returns the offset for the entry at the INDEXth position
|
||
in the GOT. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_got_offset_from_index (dynobj, output_bfd, index)
|
||
bfd *dynobj;
|
||
bfd *output_bfd;
|
||
bfd_vma index;
|
||
{
|
||
asection *sgot;
|
||
bfd_vma gp;
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
gp = _bfd_get_gp_value (output_bfd);
|
||
return (sgot->output_section->vma + sgot->output_offset + index -
|
||
gp);
|
||
}
|
||
|
||
/* Returns the GOT information associated with the link indicated by
|
||
INFO. If SGOTP is non-NULL, it is filled in with the GOT
|
||
section. */
|
||
|
||
static struct mips_elf64_got_info *
|
||
_mips_elf64_got_info (abfd, sgotp)
|
||
bfd *abfd;
|
||
asection **sgotp;
|
||
{
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
|
||
sgot = bfd_get_section_by_name (abfd, ".got");
|
||
BFD_ASSERT (sgot != NULL);
|
||
BFD_ASSERT (elf_section_data (sgot) != NULL);
|
||
g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata;
|
||
BFD_ASSERT (g != NULL);
|
||
|
||
if (sgotp)
|
||
*sgotp = sgot;
|
||
return g;
|
||
}
|
||
|
||
/* Sign-extend VALUE, which has the indicated number of BITS. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_sign_extend (value, bits)
|
||
bfd_vma value;
|
||
int bits;
|
||
{
|
||
if (value & ((bfd_vma)1 << (bits - 1)))
|
||
/* VALUE is negative. */
|
||
value |= ((bfd_vma) - 1) << bits;
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Return non-zero if the indicated VALUE has overflowed the maximum
|
||
range expressable by a signed number with the indicated number of
|
||
BITS. */
|
||
|
||
static boolean
|
||
mips_elf64_overflow_p (value, bits)
|
||
bfd_vma value;
|
||
int bits;
|
||
{
|
||
bfd_signed_vma svalue = (bfd_signed_vma) value;
|
||
|
||
if (svalue > (1 << (bits - 1)) - 1)
|
||
/* The value is too big. */
|
||
return true;
|
||
else if (svalue < -(1 << (bits - 1)))
|
||
/* The value is too small. */
|
||
return true;
|
||
|
||
/* All is well. */
|
||
return false;
|
||
}
|
||
|
||
/* Returns the GOT index for the global symbol indicated by H. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_global_got_index (abfd, h)
|
||
bfd *abfd;
|
||
struct elf_link_hash_entry *h;
|
||
{
|
||
bfd_vma index;
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
|
||
g = _mips_elf64_got_info (abfd, &sgot);
|
||
|
||
/* Once we determine the global GOT entry with the lowest dynamic
|
||
symbol table index, we must put all dynamic symbols with greater
|
||
indices into the GOT. That makes it easy to calculate the GOT
|
||
offset. */
|
||
BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx);
|
||
index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno)
|
||
* (get_elf_backend_data (abfd)->s->arch_size / 8));
|
||
BFD_ASSERT (index < sgot->_raw_size);
|
||
|
||
return index;
|
||
}
|
||
|
||
struct mips_elf64_hash_sort_data
|
||
{
|
||
/* The symbol in the global GOT with the lowest dynamic symbol table
|
||
index. */
|
||
struct elf_link_hash_entry *low;
|
||
/* The least dynamic symbol table index corresponding to a symbol
|
||
with a GOT entry. */
|
||
long min_got_dynindx;
|
||
/* The greatest dynamic symbol table index not corresponding to a
|
||
symbol without a GOT entry. */
|
||
long max_non_got_dynindx;
|
||
};
|
||
|
||
/* If H needs a GOT entry, assign it the highest available dynamic
|
||
index. Otherwise, assign it the lowest available dynamic
|
||
index. */
|
||
|
||
static boolean
|
||
mips_elf64_sort_hash_table_f (h, data)
|
||
struct mips_elf64_link_hash_entry *h;
|
||
PTR data;
|
||
{
|
||
struct mips_elf64_hash_sort_data *hsd
|
||
= (struct mips_elf64_hash_sort_data *) data;
|
||
|
||
/* Symbols without dynamic symbol table entries aren't interesting
|
||
at all. */
|
||
if (h->root.dynindx == -1)
|
||
return true;
|
||
|
||
if (h->root.got.offset != 1)
|
||
h->root.dynindx = hsd->max_non_got_dynindx++;
|
||
else
|
||
{
|
||
h->root.dynindx = --hsd->min_got_dynindx;
|
||
hsd->low = (struct elf_link_hash_entry *) h;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Sort the dynamic symbol table so that symbols that need GOT entries
|
||
appear towards the end. This reduces the amount of GOT space
|
||
required. MAX_LOCAL is used to set the number of local symbols
|
||
known to be in the dynamic symbol table. During
|
||
mips_elf64_size_dynamic_sections, this value is 1. Afterward, the
|
||
section symbols are added and the count is higher. */
|
||
|
||
static boolean
|
||
mips_elf64_sort_hash_table (info, max_local)
|
||
struct bfd_link_info *info;
|
||
unsigned long max_local;
|
||
{
|
||
struct mips_elf64_hash_sort_data hsd;
|
||
struct mips_elf64_got_info *g;
|
||
bfd *dynobj;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
hsd.low = NULL;
|
||
hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount;
|
||
hsd.max_non_got_dynindx = max_local;
|
||
mips_elf64_link_hash_traverse (((struct mips_elf64_link_hash_table *)
|
||
elf_hash_table (info)),
|
||
mips_elf64_sort_hash_table_f,
|
||
&hsd);
|
||
|
||
/* There shoud have been enough room in the symbol table to
|
||
accomodate both the GOT and non-GOT symbols. */
|
||
BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx);
|
||
|
||
/* Now we know which dynamic symbol has the lowest dynamic symbol
|
||
table index in the GOT. */
|
||
g = _mips_elf64_got_info (dynobj, NULL);
|
||
g->global_gotsym = hsd.low;
|
||
|
||
return true;
|
||
}
|
||
|
||
#if 0
|
||
/* Swap in an MSYM entry. */
|
||
|
||
static void
|
||
mips_elf64_swap_msym_in (abfd, ex, in)
|
||
bfd *abfd;
|
||
const Elf32_External_Msym *ex;
|
||
Elf32_Internal_Msym *in;
|
||
{
|
||
in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value);
|
||
in->ms_info = H_GET_32 (abfd, ex->ms_info);
|
||
}
|
||
#endif
|
||
/* Swap out an MSYM entry. */
|
||
|
||
static void
|
||
mips_elf64_swap_msym_out (abfd, in, ex)
|
||
bfd *abfd;
|
||
const Elf32_Internal_Msym *in;
|
||
Elf32_External_Msym *ex;
|
||
{
|
||
H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value);
|
||
H_PUT_32 (abfd, in->ms_info, ex->ms_info);
|
||
}
|
||
|
||
/* Create a local GOT entry for VALUE. Return the index of the entry,
|
||
or -1 if it could not be created. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_create_local_got_entry (abfd, g, sgot, value)
|
||
bfd *abfd;
|
||
struct mips_elf64_got_info *g;
|
||
asection *sgot;
|
||
bfd_vma value;
|
||
{
|
||
CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8;
|
||
|
||
if (g->assigned_gotno >= g->local_gotno)
|
||
{
|
||
/* We didn't allocate enough space in the GOT. */
|
||
(*_bfd_error_handler)
|
||
(_("not enough GOT space for local GOT entries"));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return (bfd_vma) -1;
|
||
}
|
||
|
||
bfd_put_64 (abfd, value, (sgot->contents + got_size * g->assigned_gotno));
|
||
return got_size * g->assigned_gotno++;
|
||
}
|
||
|
||
/* Returns the GOT offset at which the indicated address can be found.
|
||
If there is not yet a GOT entry for this value, create one. Returns
|
||
-1 if no satisfactory GOT offset can be found. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_local_got_index (abfd, info, value)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
bfd_vma value;
|
||
{
|
||
CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8;
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
bfd_byte *entry;
|
||
|
||
g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot);
|
||
|
||
/* Look to see if we already have an appropriate entry. */
|
||
for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO);
|
||
entry != sgot->contents + got_size * g->assigned_gotno;
|
||
entry += got_size)
|
||
{
|
||
bfd_vma address = bfd_get_64 (abfd, entry);
|
||
if (address == value)
|
||
return entry - sgot->contents;
|
||
}
|
||
|
||
return mips_elf64_create_local_got_entry (abfd, g, sgot, value);
|
||
}
|
||
|
||
/* Find a GOT entry that is within 32KB of the VALUE. These entries
|
||
are supposed to be placed at small offsets in the GOT, i.e.,
|
||
within 32KB of GP. Return the index into the GOT for this page,
|
||
and store the offset from this entry to the desired address in
|
||
OFFSETP, if it is non-NULL. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_got_page (abfd, info, value, offsetp)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
bfd_vma value;
|
||
bfd_vma *offsetp;
|
||
{
|
||
CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8;
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
bfd_byte *entry;
|
||
bfd_byte *last_entry;
|
||
bfd_vma index = 0;
|
||
bfd_vma address;
|
||
|
||
g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot);
|
||
|
||
/* Look to see if we aleady have an appropriate entry. */
|
||
last_entry = sgot->contents + got_size * g->assigned_gotno;
|
||
for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO);
|
||
entry != last_entry;
|
||
entry += got_size)
|
||
{
|
||
address = bfd_get_64 (abfd, entry);
|
||
|
||
if (!mips_elf64_overflow_p (value - address, 16))
|
||
{
|
||
/* This entry will serve as the page pointer. We can add a
|
||
16-bit number to it to get the actual address. */
|
||
index = entry - sgot->contents;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* If we didn't have an appropriate entry, we create one now. */
|
||
if (entry == last_entry)
|
||
index = mips_elf64_create_local_got_entry (abfd, g, sgot, value);
|
||
|
||
if (offsetp)
|
||
{
|
||
address = bfd_get_64 (abfd, entry);
|
||
*offsetp = value - address;
|
||
}
|
||
|
||
return index;
|
||
}
|
||
|
||
/* Find a GOT entry whose higher-order 16 bits are the same as those
|
||
for value. Return the index into the GOT for this entry. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_got16_entry (abfd, info, value, external)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
bfd_vma value;
|
||
boolean external;
|
||
{
|
||
CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8;
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
bfd_byte *entry;
|
||
bfd_byte *last_entry;
|
||
bfd_vma index = 0;
|
||
bfd_vma address;
|
||
|
||
if (! external)
|
||
{
|
||
/* Although the ABI says that it is "the high-order 16 bits" that we
|
||
want, it is really the %high value. The complete value is
|
||
calculated with a `addiu' of a LO16 relocation, just as with a
|
||
HI16/LO16 pair. */
|
||
value = mips_elf64_high (value) << 16;
|
||
}
|
||
|
||
g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot);
|
||
|
||
/* Look to see if we already have an appropriate entry. */
|
||
last_entry = sgot->contents + got_size * g->assigned_gotno;
|
||
for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO);
|
||
entry != last_entry;
|
||
entry += got_size)
|
||
{
|
||
address = bfd_get_64 (abfd, entry);
|
||
if (address == value)
|
||
{
|
||
/* This entry has the right high-order 16 bits, and the low-order
|
||
16 bits are set to zero. */
|
||
index = entry - sgot->contents;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* If we didn't have an appropriate entry, we create one now. */
|
||
if (entry == last_entry)
|
||
index = mips_elf64_create_local_got_entry (abfd, g, sgot, value);
|
||
|
||
return index;
|
||
}
|
||
|
||
/* Return whether a relocation is against a local symbol. */
|
||
|
||
static boolean
|
||
mips_elf64_local_relocation_p (input_bfd, relocation, local_sections,
|
||
check_forced)
|
||
bfd *input_bfd;
|
||
const Elf_Internal_Rela *relocation;
|
||
asection **local_sections;
|
||
boolean check_forced;
|
||
{
|
||
unsigned long r_symndx;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct mips_elf64_link_hash_entry* h;
|
||
size_t extsymoff;
|
||
|
||
r_symndx = ELF64_R_SYM (relocation->r_info);
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info;
|
||
|
||
if (r_symndx < extsymoff)
|
||
return true;
|
||
if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL)
|
||
return true;
|
||
|
||
if (check_forced)
|
||
{
|
||
/* Look up the hash table to check whether the symbol
|
||
was forced local. */
|
||
h = (struct mips_elf64_link_hash_entry *)
|
||
elf_sym_hashes (input_bfd) [r_symndx - extsymoff];
|
||
/* Find the real hash-table entry for this symbol. */
|
||
while (h->root.root.type == bfd_link_hash_indirect
|
||
|| h->root.root.type == bfd_link_hash_warning)
|
||
h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link;
|
||
if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/* Returns the first relocation of type r_type found, beginning with
|
||
RELOCATION. RELEND is one-past-the-end of the relocation table. */
|
||
|
||
static const Elf_Internal_Rela *
|
||
mips_elf64_next_relocation (r_type, relocation, relend)
|
||
unsigned int r_type;
|
||
const Elf_Internal_Rela *relocation;
|
||
const Elf_Internal_Rela *relend;
|
||
{
|
||
/* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be
|
||
immediately following. However, for the IRIX6 ABI, the next
|
||
relocation may be a composed relocation consisting of several
|
||
relocations for the same address. In that case, the R_MIPS_LO16
|
||
relocation may occur as one of these. We permit a similar
|
||
extension in general, as that is useful for GCC. */
|
||
while (relocation < relend)
|
||
{
|
||
if (ELF64_MIPS_R_TYPE (relocation->r_info) == r_type)
|
||
return relocation;
|
||
|
||
++relocation;
|
||
}
|
||
|
||
/* We didn't find it. */
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return NULL;
|
||
}
|
||
|
||
/* Create a rel.dyn relocation for the dynamic linker to resolve. REL
|
||
is the original relocation, which is now being transformed into a
|
||
dynamic relocation. The ADDENDP is adjusted if necessary; the
|
||
caller should store the result in place of the original addend. */
|
||
|
||
static boolean
|
||
mips_elf64_create_dynamic_relocation (output_bfd, info, rel, h, sec,
|
||
symbol, addendp, input_section)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
const Elf_Internal_Rela *rel;
|
||
struct mips_elf64_link_hash_entry *h;
|
||
asection *sec;
|
||
bfd_vma symbol;
|
||
bfd_vma *addendp;
|
||
asection *input_section;
|
||
{
|
||
Elf_Internal_Rel outrel[3];
|
||
boolean skip;
|
||
asection *sreloc;
|
||
bfd *dynobj;
|
||
int r_type;
|
||
|
||
r_type = ELF64_MIPS_R_TYPE (rel->r_info);
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn");
|
||
BFD_ASSERT (sreloc != NULL);
|
||
BFD_ASSERT (sreloc->contents != NULL);
|
||
BFD_ASSERT ((sreloc->reloc_count
|
||
* get_elf_backend_data (output_bfd)->s->sizeof_rel)
|
||
< sreloc->_raw_size);
|
||
|
||
skip = false;
|
||
outrel[0].r_offset = _bfd_elf_section_offset (output_bfd, info,
|
||
input_section,
|
||
rel[0].r_offset);
|
||
/* FIXME: For -2 runtime relocation needs to be skipped, but
|
||
properly resolved statically and installed. */
|
||
BFD_ASSERT (outrel[0].r_offset != (bfd_vma) -2);
|
||
|
||
/* We begin by assuming that the offset for the dynamic relocation
|
||
is the same as for the original relocation. We'll adjust this
|
||
later to reflect the correct output offsets. */
|
||
if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS)
|
||
{
|
||
outrel[1].r_offset = rel[1].r_offset;
|
||
outrel[2].r_offset = rel[2].r_offset;
|
||
}
|
||
else
|
||
{
|
||
/* Except that in a stab section things are more complex.
|
||
Because we compress stab information, the offset given in the
|
||
relocation may not be the one we want; we must let the stabs
|
||
machinery tell us the offset. */
|
||
outrel[1].r_offset = outrel[0].r_offset;
|
||
outrel[2].r_offset = outrel[0].r_offset;
|
||
/* If we didn't need the relocation at all, this value will be
|
||
-1. */
|
||
if (outrel[0].r_offset == (bfd_vma) -1)
|
||
skip = true;
|
||
}
|
||
|
||
/* If we've decided to skip this relocation, just output an empty
|
||
record. Note that R_MIPS_NONE == 0, so that this call to memset
|
||
is a way of setting R_TYPE to R_MIPS_NONE. */
|
||
if (skip)
|
||
memset (outrel, 0, sizeof (Elf_Internal_Rel) * 3);
|
||
else
|
||
{
|
||
long indx;
|
||
bfd_vma section_offset;
|
||
|
||
/* We must now calculate the dynamic symbol table index to use
|
||
in the relocation. */
|
||
if (h != NULL
|
||
&& (! info->symbolic || (h->root.elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|
||
{
|
||
indx = h->root.dynindx;
|
||
/* h->root.dynindx may be -1 if this symbol was marked to
|
||
become local. */
|
||
if (indx == -1)
|
||
indx = 0;
|
||
}
|
||
else
|
||
{
|
||
if (sec != NULL && bfd_is_abs_section (sec))
|
||
indx = 0;
|
||
else if (sec == NULL || sec->owner == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
indx = elf_section_data (sec->output_section)->dynindx;
|
||
if (indx == 0)
|
||
abort ();
|
||
}
|
||
|
||
/* Figure out how far the target of the relocation is from
|
||
the beginning of its section. */
|
||
section_offset = symbol - sec->output_section->vma;
|
||
/* The relocation we're building is section-relative.
|
||
Therefore, the original addend must be adjusted by the
|
||
section offset. */
|
||
*addendp += section_offset;
|
||
/* Now, the relocation is just against the section. */
|
||
symbol = sec->output_section->vma;
|
||
}
|
||
|
||
/* If the relocation was previously an absolute relocation and
|
||
this symbol will not be referred to by the relocation, we must
|
||
adjust it by the value we give it in the dynamic symbol table.
|
||
Otherwise leave the job up to the dynamic linker. */
|
||
if (!indx && r_type != R_MIPS_REL32)
|
||
*addendp += symbol;
|
||
|
||
/* The relocation is always an REL32 relocation because we don't
|
||
know where the shared library will wind up at load-time. */
|
||
outrel[0].r_info = ELF64_R_INFO (indx, R_MIPS_REL32);
|
||
|
||
/* Adjust the output offset of the relocation to reference the
|
||
correct location in the output file. */
|
||
outrel[0].r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
outrel[1].r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
outrel[2].r_offset += (input_section->output_section->vma
|
||
+ input_section->output_offset);
|
||
}
|
||
|
||
/* Put the relocation back out. */
|
||
mips_elf64_be_swap_reloc_out (output_bfd, outrel,
|
||
(sreloc->contents
|
||
+ sreloc->reloc_count
|
||
* sizeof (Elf64_Mips_External_Rel)));
|
||
|
||
/* Record the index of the first relocation referencing H. This
|
||
information is later emitted in the .msym section. */
|
||
if (h != NULL
|
||
&& (h->min_dyn_reloc_index == 0
|
||
|| sreloc->reloc_count < h->min_dyn_reloc_index))
|
||
h->min_dyn_reloc_index = sreloc->reloc_count;
|
||
|
||
/* We've now added another relocation. */
|
||
++sreloc->reloc_count;
|
||
|
||
/* Make sure the output section is writable. The dynamic linker
|
||
will be writing to it. */
|
||
elf_section_data (input_section->output_section)->this_hdr.sh_flags
|
||
|= SHF_WRITE;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Calculate the value produced by the RELOCATION (which comes from
|
||
the INPUT_BFD). The ADDEND is the addend to use for this
|
||
RELOCATION; RELOCATION->R_ADDEND is ignored.
|
||
|
||
The result of the relocation calculation is stored in VALUEP.
|
||
REQUIRE_JALXP indicates whether or not the opcode used with this
|
||
relocation must be JALX.
|
||
|
||
This function returns bfd_reloc_continue if the caller need take no
|
||
further action regarding this relocation, bfd_reloc_notsupported if
|
||
something goes dramatically wrong, bfd_reloc_overflow if an
|
||
overflow occurs, and bfd_reloc_ok to indicate success. */
|
||
|
||
static bfd_reloc_status_type
|
||
mips_elf64_calculate_relocation (abfd, input_bfd, input_section, info,
|
||
relocation, addend, howto, local_syms,
|
||
local_sections, valuep, namep, require_jalxp)
|
||
bfd *abfd;
|
||
bfd *input_bfd;
|
||
asection *input_section;
|
||
struct bfd_link_info *info;
|
||
const Elf_Internal_Rela *relocation;
|
||
bfd_vma addend;
|
||
reloc_howto_type *howto;
|
||
Elf_Internal_Sym *local_syms;
|
||
asection **local_sections;
|
||
bfd_vma *valuep;
|
||
const char **namep;
|
||
boolean *require_jalxp;
|
||
{
|
||
/* The eventual value we will return. */
|
||
bfd_vma value;
|
||
/* The address of the symbol against which the relocation is
|
||
occurring. */
|
||
bfd_vma symbol = 0;
|
||
/* The final GP value to be used for the relocatable, executable, or
|
||
shared object file being produced. */
|
||
bfd_vma gp = (bfd_vma) - 1;
|
||
/* The place (section offset or address) of the storage unit being
|
||
relocated. */
|
||
bfd_vma p;
|
||
/* The value of GP used to create the relocatable object. */
|
||
bfd_vma gp0 = (bfd_vma) - 1;
|
||
/* The offset into the global offset table at which the address of
|
||
the relocation entry symbol, adjusted by the addend, resides
|
||
during execution. */
|
||
bfd_vma g = (bfd_vma) - 1;
|
||
/* The section in which the symbol referenced by the relocation is
|
||
located. */
|
||
asection *sec = NULL;
|
||
struct mips_elf64_link_hash_entry* h = NULL;
|
||
/* True if the symbol referred to by this relocation is a local
|
||
symbol. */
|
||
boolean local_p;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
size_t extsymoff;
|
||
unsigned long r_symndx;
|
||
int r_type;
|
||
/* True if overflow occurred during the calculation of the
|
||
relocation value. */
|
||
boolean overflowed_p;
|
||
/* True if this relocation refers to a MIPS16 function. */
|
||
boolean target_is_16_bit_code_p = false;
|
||
|
||
/* Parse the relocation. */
|
||
r_symndx = ELF64_R_SYM (relocation->r_info);
|
||
r_type = ELF64_MIPS_R_TYPE (relocation->r_info);
|
||
p = (input_section->output_section->vma
|
||
+ input_section->output_offset
|
||
+ relocation->r_offset);
|
||
|
||
/* Assume that there will be no overflow. */
|
||
overflowed_p = false;
|
||
|
||
/* Figure out whether or not the symbol is local, and get the offset
|
||
used in the array of hash table entries. */
|
||
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
local_p = mips_elf64_local_relocation_p (input_bfd, relocation,
|
||
local_sections, false);
|
||
if (! elf_bad_symtab (input_bfd))
|
||
extsymoff = symtab_hdr->sh_info;
|
||
else
|
||
{
|
||
/* The symbol table does not follow the rule that local symbols
|
||
must come before globals. */
|
||
extsymoff = 0;
|
||
}
|
||
|
||
/* Figure out the value of the symbol. */
|
||
if (local_p)
|
||
{
|
||
Elf_Internal_Sym *sym;
|
||
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections[r_symndx];
|
||
|
||
symbol = sec->output_section->vma + sec->output_offset;
|
||
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
||
symbol += sym->st_value;
|
||
|
||
/* MIPS16 text labels should be treated as odd. */
|
||
if (sym->st_other == STO_MIPS16)
|
||
++symbol;
|
||
|
||
/* Record the name of this symbol, for our caller. */
|
||
*namep = bfd_elf_string_from_elf_section (input_bfd,
|
||
symtab_hdr->sh_link,
|
||
sym->st_name);
|
||
if (*namep == '\0')
|
||
*namep = bfd_section_name (input_bfd, sec);
|
||
|
||
target_is_16_bit_code_p = (sym->st_other == STO_MIPS16);
|
||
}
|
||
else
|
||
{
|
||
/* For global symbols we look up the symbol in the hash-table. */
|
||
h = ((struct mips_elf64_link_hash_entry *)
|
||
elf_sym_hashes (input_bfd) [r_symndx - extsymoff]);
|
||
/* Find the real hash-table entry for this symbol. */
|
||
while (h->root.root.type == bfd_link_hash_indirect
|
||
|| h->root.root.type == bfd_link_hash_warning)
|
||
h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link;
|
||
|
||
/* Record the name of this symbol, for our caller. */
|
||
*namep = h->root.root.root.string;
|
||
|
||
/* If this symbol is defined, calculate its address. */
|
||
if ((h->root.root.type == bfd_link_hash_defined
|
||
|| h->root.root.type == bfd_link_hash_defweak)
|
||
&& h->root.root.u.def.section)
|
||
{
|
||
sec = h->root.root.u.def.section;
|
||
if (sec->output_section)
|
||
symbol = (h->root.root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
else
|
||
symbol = h->root.root.u.def.value;
|
||
}
|
||
else if (h->root.root.type == bfd_link_hash_undefweak)
|
||
/* We allow relocations against undefined weak symbols, giving
|
||
it the value zero, so that you can undefined weak functions
|
||
and check to see if they exist by looking at their
|
||
addresses. */
|
||
symbol = 0;
|
||
else if (info->shared
|
||
&& (!info->symbolic || info->allow_shlib_undefined)
|
||
&& !info->no_undefined
|
||
&& ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
|
||
symbol = 0;
|
||
else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 ||
|
||
strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0)
|
||
{
|
||
/* If this is a dynamic link, we should have created a
|
||
_DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol
|
||
in in mips_elf64_create_dynamic_sections.
|
||
Otherwise, we should define the symbol with a value of 0.
|
||
FIXME: It should probably get into the symbol table
|
||
somehow as well. */
|
||
BFD_ASSERT (! info->shared);
|
||
BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL);
|
||
symbol = 0;
|
||
}
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.root.string, input_bfd,
|
||
input_section, relocation->r_offset,
|
||
(!info->shared || info->no_undefined
|
||
|| ELF_ST_VISIBILITY (h->root.other)))))
|
||
return bfd_reloc_undefined;
|
||
symbol = 0;
|
||
}
|
||
|
||
target_is_16_bit_code_p = (h->root.other == STO_MIPS16);
|
||
}
|
||
|
||
/* If this is a 64-bit call to a 16-bit function with a stub, we
|
||
need to redirect the call to the stub, unless we're already *in*
|
||
a stub. */
|
||
if (r_type != R_MIPS16_26 && !info->relocateable
|
||
&& ((h != NULL && h->fn_stub != NULL)
|
||
|| (local_p && elf_tdata (input_bfd)->local_stubs != NULL
|
||
&& elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
|
||
&& !mips_elf64_stub_section_p (input_bfd, input_section))
|
||
{
|
||
/* This is a 64-bit call to a 16-bit function. We should
|
||
have already noticed that we were going to need the
|
||
stub. */
|
||
if (local_p)
|
||
sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
|
||
else
|
||
{
|
||
BFD_ASSERT (h->need_fn_stub);
|
||
sec = h->fn_stub;
|
||
}
|
||
|
||
symbol = sec->output_section->vma + sec->output_offset;
|
||
}
|
||
/* If this is a 16-bit call to a 64-bit function with a stub, we
|
||
need to redirect the call to the stub. */
|
||
else if (r_type == R_MIPS16_26 && !info->relocateable
|
||
&& h != NULL
|
||
&& (h->call_stub != NULL || h->call_fp_stub != NULL)
|
||
&& !target_is_16_bit_code_p)
|
||
{
|
||
/* If both call_stub and call_fp_stub are defined, we can figure
|
||
out which one to use by seeing which one appears in the input
|
||
file. */
|
||
if (h->call_stub != NULL && h->call_fp_stub != NULL)
|
||
{
|
||
asection *o;
|
||
|
||
sec = NULL;
|
||
for (o = input_bfd->sections; o != NULL; o = o->next)
|
||
{
|
||
if (strncmp (bfd_get_section_name (input_bfd, o),
|
||
CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
|
||
{
|
||
sec = h->call_fp_stub;
|
||
break;
|
||
}
|
||
}
|
||
if (sec == NULL)
|
||
sec = h->call_stub;
|
||
}
|
||
else if (h->call_stub != NULL)
|
||
sec = h->call_stub;
|
||
else
|
||
sec = h->call_fp_stub;
|
||
|
||
BFD_ASSERT (sec->_raw_size > 0);
|
||
symbol = sec->output_section->vma + sec->output_offset;
|
||
}
|
||
|
||
/* Calls from 16-bit code to 32-bit code and vice versa require the
|
||
special jalx instruction. */
|
||
*require_jalxp = (!info->relocateable
|
||
&& ((r_type == R_MIPS16_26) != target_is_16_bit_code_p));
|
||
|
||
local_p = mips_elf64_local_relocation_p (input_bfd, relocation,
|
||
local_sections, true);
|
||
|
||
/* If we haven't already determined the GOT offset, or the GP value,
|
||
and we're going to need it, get it now. */
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_CALL16:
|
||
case R_MIPS_GOT16:
|
||
case R_MIPS_GOT_DISP:
|
||
case R_MIPS_GOT_HI16:
|
||
case R_MIPS_CALL_HI16:
|
||
case R_MIPS_GOT_LO16:
|
||
case R_MIPS_CALL_LO16:
|
||
/* Find the index into the GOT where this value is located. */
|
||
if (!local_p)
|
||
{
|
||
BFD_ASSERT (addend == 0);
|
||
g = mips_elf64_global_got_index (elf_hash_table (info)->dynobj,
|
||
(struct elf_link_hash_entry*) h);
|
||
if (! elf_hash_table(info)->dynamic_sections_created
|
||
|| (info->shared
|
||
&& (info->symbolic || h->root.dynindx == -1)
|
||
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
|
||
{
|
||
/* This is a static link or a -Bsymbolic link. The
|
||
symbol is defined locally, or was forced to be local.
|
||
We must initialize this entry in the GOT. */
|
||
bfd *tmpbfd = elf_hash_table (info)->dynobj;
|
||
|
||
asection *sgot = bfd_get_section_by_name (tmpbfd, ".got");
|
||
bfd_put_64 (tmpbfd, symbol + addend, sgot->contents + g);
|
||
}
|
||
}
|
||
else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16)
|
||
/* There's no need to create a local GOT entry here; the
|
||
calculation for a local GOT16 entry does not involve G. */
|
||
break;
|
||
else
|
||
{
|
||
g = mips_elf64_local_got_index (abfd, info, symbol + addend);
|
||
if (g == (bfd_vma) -1)
|
||
return false;
|
||
}
|
||
|
||
/* Convert GOT indices to actual offsets. */
|
||
g = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj,
|
||
abfd, g);
|
||
break;
|
||
|
||
case R_MIPS_HI16:
|
||
case R_MIPS_LO16:
|
||
case R_MIPS_GPREL16:
|
||
case R_MIPS_GPREL32:
|
||
case R_MIPS_LITERAL:
|
||
gp0 = _bfd_get_gp_value (input_bfd);
|
||
gp = _bfd_get_gp_value (abfd);
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Figure out what kind of relocation is being performed. */
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_NONE:
|
||
return bfd_reloc_continue;
|
||
|
||
case R_MIPS_16:
|
||
value = symbol + mips_elf64_sign_extend (addend, 16);
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
|
||
case R_MIPS_32:
|
||
case R_MIPS_REL32:
|
||
case R_MIPS_64:
|
||
if ((info->shared
|
||
|| (elf_hash_table (info)->dynamic_sections_created
|
||
&& h != NULL
|
||
&& ((h->root.elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_DYNAMIC) != 0)
|
||
&& ((h->root.elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
||
&& r_symndx != 0
|
||
&& (input_section->flags & SEC_ALLOC) != 0)
|
||
{
|
||
/* If we're creating a shared library, or this relocation is
|
||
against a symbol in a shared library, then we can't know
|
||
where the symbol will end up. So, we create a relocation
|
||
record in the output, and leave the job up to the dynamic
|
||
linker. */
|
||
value = addend;
|
||
if (!mips_elf64_create_dynamic_relocation (abfd, info, relocation,
|
||
h, sec, symbol, &value,
|
||
input_section))
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
if (r_type != R_MIPS_REL32)
|
||
value = symbol + addend;
|
||
else
|
||
value = addend;
|
||
}
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_PC32:
|
||
case R_MIPS_PC64:
|
||
case R_MIPS_GNU_REL_LO16:
|
||
value = symbol + addend - p;
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_GNU_REL16_S2:
|
||
value = symbol + mips_elf64_sign_extend (addend << 2, 18) - p;
|
||
overflowed_p = mips_elf64_overflow_p (value, 18);
|
||
value = (value >> 2) & howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_GNU_REL_HI16:
|
||
value = mips_elf64_high (addend + symbol - p);
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS16_26:
|
||
/* The calculation for R_MIPS16_26 is just the same as for an
|
||
R_MIPS_26. It's only the storage of the relocated field into
|
||
the output file that's different. That's handled in
|
||
mips_elf_perform_relocation. So, we just fall through to the
|
||
R_MIPS_26 case here. */
|
||
case R_MIPS_26:
|
||
if (local_p)
|
||
value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2;
|
||
else
|
||
value = (mips_elf64_sign_extend (addend << 2, 28) + symbol) >> 2;
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_HI16:
|
||
value = mips_elf64_high (addend + symbol);
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_LO16:
|
||
value = (addend + symbol) & 0xffff;
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_LITERAL:
|
||
/* Because we don't merge literal sections, we can handle this
|
||
just like R_MIPS_GPREL16. In the long run, we should merge
|
||
shared literals, and then we will need to additional work
|
||
here. */
|
||
|
||
/* Fall through. */
|
||
|
||
case R_MIPS_GPREL16:
|
||
if (local_p)
|
||
value = mips_elf64_sign_extend (addend, 16) + symbol + gp0 - gp;
|
||
else
|
||
value = mips_elf64_sign_extend (addend, 16) + symbol - gp;
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
|
||
case R_MIPS_PC16:
|
||
value = mips_elf64_sign_extend (addend, 16) + symbol - p;
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
value = (bfd_vma) ((bfd_signed_vma) value / 4);
|
||
break;
|
||
|
||
case R_MIPS_GOT16:
|
||
case R_MIPS_CALL16:
|
||
if (local_p)
|
||
{
|
||
boolean forced;
|
||
|
||
/* The special case is when the symbol is forced to be local. We
|
||
need the full address in the GOT since no R_MIPS_LO16 relocation
|
||
follows. */
|
||
forced = ! mips_elf64_local_relocation_p (input_bfd, relocation,
|
||
local_sections, false);
|
||
value = mips_elf64_got16_entry (abfd, info, symbol + addend, forced);
|
||
if (value == (bfd_vma) -1)
|
||
return false;
|
||
value
|
||
= mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj,
|
||
abfd,
|
||
value);
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
}
|
||
|
||
/* Fall through. */
|
||
|
||
case R_MIPS_GOT_DISP:
|
||
value = g;
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
|
||
case R_MIPS_GPREL32:
|
||
value = (addend + symbol + gp0 - gp) & howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_GOT_HI16:
|
||
case R_MIPS_CALL_HI16:
|
||
/* We're allowed to handle these two relocations identically.
|
||
The dynamic linker is allowed to handle the CALL relocations
|
||
differently by creating a lazy evaluation stub. */
|
||
value = g;
|
||
value = mips_elf64_high (value);
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_GOT_LO16:
|
||
case R_MIPS_CALL_LO16:
|
||
value = g & howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_GOT_PAGE:
|
||
value = mips_elf64_got_page (abfd, info, symbol + addend, NULL);
|
||
if (value == (bfd_vma) -1)
|
||
return false;
|
||
value = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj,
|
||
abfd,
|
||
value);
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
|
||
case R_MIPS_GOT_OFST:
|
||
mips_elf64_got_page (abfd, info, symbol + addend, &value);
|
||
overflowed_p = mips_elf64_overflow_p (value, 16);
|
||
break;
|
||
|
||
case R_MIPS_SUB:
|
||
value = symbol - addend;
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_HIGHER:
|
||
value = mips_elf64_higher (addend + symbol);
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_HIGHEST:
|
||
value = mips_elf64_highest (addend + symbol);
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_SCN_DISP:
|
||
value = symbol + addend - sec->output_offset;
|
||
value &= howto->dst_mask;
|
||
break;
|
||
|
||
case R_MIPS_PJUMP:
|
||
case R_MIPS_JALR:
|
||
/* Both of these may be ignored. R_MIPS_JALR is an optimization
|
||
hint; we could improve performance by honoring that hint. */
|
||
return bfd_reloc_continue;
|
||
|
||
case R_MIPS_GNU_VTINHERIT:
|
||
case R_MIPS_GNU_VTENTRY:
|
||
/* We don't do anything with these at present. */
|
||
return bfd_reloc_continue;
|
||
|
||
default:
|
||
/* An unrecognized relocation type. */
|
||
return bfd_reloc_notsupported;
|
||
}
|
||
|
||
/* Store the VALUE for our caller. */
|
||
*valuep = value;
|
||
return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok;
|
||
}
|
||
|
||
/* Obtain the field relocated by RELOCATION. */
|
||
|
||
static bfd_vma
|
||
mips_elf64_obtain_contents (howto, relocation, input_bfd, contents)
|
||
reloc_howto_type *howto;
|
||
const Elf_Internal_Rela *relocation;
|
||
bfd *input_bfd;
|
||
bfd_byte *contents;
|
||
{
|
||
bfd_byte *location = contents + relocation->r_offset;
|
||
|
||
/* Obtain the bytes. */
|
||
return bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location);
|
||
}
|
||
|
||
/* It has been determined that the result of the RELOCATION is the
|
||
VALUE. Use HOWTO to place VALUE into the output file at the
|
||
appropriate position. The SECTION is the section to which the
|
||
relocation applies. If REQUIRE_JALX is true, then the opcode used
|
||
for the relocation must be either JAL or JALX, and it is
|
||
unconditionally converted to JALX.
|
||
|
||
Returns false if anything goes wrong. */
|
||
|
||
static boolean
|
||
mips_elf64_perform_relocation (info, howto, relocation, value,
|
||
input_bfd, input_section,
|
||
contents, require_jalx)
|
||
struct bfd_link_info *info;
|
||
reloc_howto_type *howto;
|
||
const Elf_Internal_Rela *relocation;
|
||
bfd_vma value;
|
||
bfd *input_bfd;
|
||
asection *input_section;
|
||
bfd_byte *contents;
|
||
boolean require_jalx;
|
||
{
|
||
bfd_vma x;
|
||
bfd_byte *location;
|
||
int r_type = ELF32_R_TYPE (relocation->r_info);
|
||
|
||
/* Figure out where the relocation is occurring. */
|
||
location = contents + relocation->r_offset;
|
||
|
||
/* Obtain the current value. */
|
||
x = mips_elf64_obtain_contents (howto, relocation, input_bfd, contents);
|
||
|
||
/* Clear the field we are setting. */
|
||
x &= ~howto->dst_mask;
|
||
|
||
/* If this is the R_MIPS16_26 relocation, we must store the
|
||
value in a funny way. */
|
||
if (r_type == R_MIPS16_26)
|
||
{
|
||
/* R_MIPS16_26 is used for the mips16 jal and jalx instructions.
|
||
Most mips16 instructions are 16 bits, but these instructions
|
||
are 32 bits.
|
||
|
||
The format of these instructions is:
|
||
|
||
+--------------+--------------------------------+
|
||
! JALX ! X! Imm 20:16 ! Imm 25:21 !
|
||
+--------------+--------------------------------+
|
||
! Immediate 15:0 !
|
||
+-----------------------------------------------+
|
||
|
||
JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx.
|
||
Note that the immediate value in the first word is swapped.
|
||
|
||
When producing a relocateable object file, R_MIPS16_26 is
|
||
handled mostly like R_MIPS_26. In particular, the addend is
|
||
stored as a straight 26-bit value in a 32-bit instruction.
|
||
(gas makes life simpler for itself by never adjusting a
|
||
R_MIPS16_26 reloc to be against a section, so the addend is
|
||
always zero). However, the 32 bit instruction is stored as 2
|
||
16-bit values, rather than a single 32-bit value. In a
|
||
big-endian file, the result is the same; in a little-endian
|
||
file, the two 16-bit halves of the 32 bit value are swapped.
|
||
This is so that a disassembler can recognize the jal
|
||
instruction.
|
||
|
||
When doing a final link, R_MIPS16_26 is treated as a 32 bit
|
||
instruction stored as two 16-bit values. The addend A is the
|
||
contents of the targ26 field. The calculation is the same as
|
||
R_MIPS_26. When storing the calculated value, reorder the
|
||
immediate value as shown above, and don't forget to store the
|
||
value as two 16-bit values.
|
||
|
||
To put it in MIPS ABI terms, the relocation field is T-targ26-16,
|
||
defined as
|
||
|
||
big-endian:
|
||
+--------+----------------------+
|
||
| | |
|
||
| | targ26-16 |
|
||
|31 26|25 0|
|
||
+--------+----------------------+
|
||
|
||
little-endian:
|
||
+----------+------+-------------+
|
||
| | | |
|
||
| sub1 | | sub2 |
|
||
|0 9|10 15|16 31|
|
||
+----------+--------------------+
|
||
where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is
|
||
((sub1 << 16) | sub2)).
|
||
|
||
When producing a relocateable object file, the calculation is
|
||
(((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
|
||
When producing a fully linked file, the calculation is
|
||
let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2)
|
||
((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */
|
||
|
||
if (!info->relocateable)
|
||
/* Shuffle the bits according to the formula above. */
|
||
value = (((value & 0x1f0000) << 5)
|
||
| ((value & 0x3e00000) >> 5)
|
||
| (value & 0xffff));
|
||
}
|
||
else if (r_type == R_MIPS16_GPREL)
|
||
{
|
||
/* R_MIPS16_GPREL is used for GP-relative addressing in mips16
|
||
mode. A typical instruction will have a format like this:
|
||
|
||
+--------------+--------------------------------+
|
||
! EXTEND ! Imm 10:5 ! Imm 15:11 !
|
||
+--------------+--------------------------------+
|
||
! Major ! rx ! ry ! Imm 4:0 !
|
||
+--------------+--------------------------------+
|
||
|
||
EXTEND is the five bit value 11110. Major is the instruction
|
||
opcode.
|
||
|
||
This is handled exactly like R_MIPS_GPREL16, except that the
|
||
addend is retrieved and stored as shown in this diagram; that
|
||
is, the Imm fields above replace the V-rel16 field.
|
||
|
||
All we need to do here is shuffle the bits appropriately. As
|
||
above, the two 16-bit halves must be swapped on a
|
||
little-endian system. */
|
||
value = (((value & 0x7e0) << 16)
|
||
| ((value & 0xf800) << 5)
|
||
| (value & 0x1f));
|
||
}
|
||
|
||
/* Set the field. */
|
||
x |= (value & howto->dst_mask);
|
||
|
||
/* If required, turn JAL into JALX. */
|
||
if (require_jalx)
|
||
{
|
||
boolean ok;
|
||
bfd_vma opcode = x >> 26;
|
||
bfd_vma jalx_opcode;
|
||
|
||
/* Check to see if the opcode is already JAL or JALX. */
|
||
if (r_type == R_MIPS16_26)
|
||
{
|
||
ok = ((opcode == 0x6) || (opcode == 0x7));
|
||
jalx_opcode = 0x7;
|
||
}
|
||
else
|
||
{
|
||
ok = ((opcode == 0x3) || (opcode == 0x1d));
|
||
jalx_opcode = 0x1d;
|
||
}
|
||
|
||
/* If the opcode is not JAL or JALX, there's a problem. */
|
||
if (!ok)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: %s+0x%lx: jump to stub routine which is not jal"),
|
||
bfd_archive_filename (input_bfd),
|
||
input_section->name,
|
||
(unsigned long) relocation->r_offset);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
/* Make this the JALX opcode. */
|
||
x = (x & ~(0x3f << 26)) | (jalx_opcode << 26);
|
||
}
|
||
|
||
/* Swap the high- and low-order 16 bits on little-endian systems
|
||
when doing a MIPS16 relocation. */
|
||
if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26)
|
||
&& bfd_little_endian (input_bfd))
|
||
x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16));
|
||
|
||
/* Put the value into the output. */
|
||
bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location);
|
||
return true;
|
||
}
|
||
|
||
/* Returns true if SECTION is a MIPS16 stub section. */
|
||
|
||
static boolean
|
||
mips_elf64_stub_section_p (abfd, section)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
asection *section;
|
||
{
|
||
const char *name = bfd_get_section_name (abfd, section);
|
||
|
||
return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0
|
||
|| strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
|
||
|| strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0);
|
||
}
|
||
|
||
/* Relocate a MIPS ELF64 section. */
|
||
|
||
static boolean
|
||
mips_elf64_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
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_Rela *rel;
|
||
const Elf_Internal_Rela *relend;
|
||
bfd_vma addend = 0;
|
||
boolean use_saved_addend_p = false;
|
||
struct elf_backend_data *bed;
|
||
|
||
bed = get_elf_backend_data (output_bfd);
|
||
relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
|
||
for (rel = relocs; rel < relend; ++rel)
|
||
{
|
||
const char *name;
|
||
bfd_vma value;
|
||
reloc_howto_type *howto;
|
||
boolean require_jalx;
|
||
/* True if the relocation is a RELA relocation, rather than a
|
||
REL relocation. */
|
||
boolean rela_relocation_p = true;
|
||
int r_type = ELF64_MIPS_R_TYPE (rel->r_info);
|
||
const char *msg = (const char *) NULL;
|
||
|
||
/* Find the relocation howto for this relocation. */
|
||
howto = &mips_elf64_howto_table_rela[r_type];
|
||
|
||
if (!use_saved_addend_p)
|
||
{
|
||
Elf_Internal_Shdr *rel_hdr;
|
||
|
||
/* If these relocations were originally of the REL variety,
|
||
we must pull the addend out of the field that will be
|
||
relocated. Otherwise, we simply use the contents of the
|
||
RELA relocation. To determine which flavor or relocation
|
||
this is, we depend on the fact that the INPUT_SECTION's
|
||
REL_HDR is read before its REL_HDR2. */
|
||
rel_hdr = &elf_section_data (input_section)->rel_hdr;
|
||
if ((size_t) (rel - relocs)
|
||
>= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel))
|
||
rel_hdr = elf_section_data (input_section)->rel_hdr2;
|
||
if (rel_hdr->sh_entsize
|
||
== (get_elf_backend_data (input_bfd)->s->sizeof_rel))
|
||
{
|
||
/* Note that this is a REL relocation. */
|
||
rela_relocation_p = false;
|
||
|
||
/* Find the relocation howto for this relocation. */
|
||
howto = &mips_elf64_howto_table_rel[r_type];
|
||
|
||
/* Get the addend, which is stored in the input file. */
|
||
addend = mips_elf64_obtain_contents (howto,
|
||
rel,
|
||
input_bfd,
|
||
contents);
|
||
addend &= howto->src_mask;
|
||
|
||
/* For some kinds of relocations, the ADDEND is a
|
||
combination of the addend stored in two different
|
||
relocations. */
|
||
if (r_type == R_MIPS_HI16
|
||
|| r_type == R_MIPS_GNU_REL_HI16
|
||
|| (r_type == R_MIPS_GOT16
|
||
&& mips_elf64_local_relocation_p (input_bfd, rel,
|
||
local_sections, false)))
|
||
{
|
||
bfd_vma l;
|
||
const Elf_Internal_Rela *lo16_relocation;
|
||
reloc_howto_type *lo16_howto;
|
||
int lo;
|
||
|
||
/* The combined value is the sum of the HI16 addend,
|
||
left-shifted by sixteen bits, and the LO16
|
||
addend, sign extended. (Usually, the code does
|
||
a `lui' of the HI16 value, and then an `addiu' of
|
||
the LO16 value.)
|
||
|
||
Scan ahead to find a matching LO16 relocation. */
|
||
if (r_type == R_MIPS_GNU_REL_HI16)
|
||
lo = R_MIPS_GNU_REL_LO16;
|
||
else
|
||
lo = R_MIPS_LO16;
|
||
lo16_relocation
|
||
= mips_elf64_next_relocation (lo, rel, relend);
|
||
if (lo16_relocation == NULL)
|
||
return false;
|
||
|
||
/* Obtain the addend kept there. */
|
||
if (rela_relocation_p == false)
|
||
lo16_howto = &mips_elf64_howto_table_rel[lo];
|
||
else
|
||
lo16_howto = &mips_elf64_howto_table_rela[lo];
|
||
l = mips_elf64_obtain_contents (lo16_howto,
|
||
lo16_relocation,
|
||
input_bfd, contents);
|
||
l &= lo16_howto->src_mask;
|
||
l = mips_elf64_sign_extend (l, 16);
|
||
|
||
addend <<= 16;
|
||
|
||
/* Compute the combined addend. */
|
||
addend += l;
|
||
}
|
||
}
|
||
else
|
||
addend = rel->r_addend;
|
||
}
|
||
|
||
if (info->relocateable)
|
||
{
|
||
Elf_Internal_Sym *sym;
|
||
unsigned long r_symndx;
|
||
|
||
/* Since we're just relocating, all we need to do is copy
|
||
the relocations back out to the object file, unless
|
||
they're against a section symbol, in which case we need
|
||
to adjust by the section offset, or unless they're GP
|
||
relative in which case we need to adjust by the amount
|
||
that we're adjusting GP in this relocateable object. */
|
||
|
||
if (!mips_elf64_local_relocation_p (input_bfd, rel, local_sections,
|
||
false))
|
||
/* There's nothing to do for non-local relocations. */
|
||
continue;
|
||
|
||
if (r_type == R_MIPS_GPREL16
|
||
|| r_type == R_MIPS_GPREL32
|
||
|| r_type == R_MIPS_LITERAL)
|
||
addend -= (_bfd_get_gp_value (output_bfd)
|
||
- _bfd_get_gp_value (input_bfd));
|
||
else if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2)
|
||
/* The addend is stored without its two least
|
||
significant bits (which are always zero.) In a
|
||
non-relocateable link, calculate_relocation will do
|
||
this shift; here, we must do it ourselves. */
|
||
addend <<= 2;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
sym = local_syms + r_symndx;
|
||
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
||
/* Adjust the addend appropriately. */
|
||
addend += local_sections[r_symndx]->output_offset;
|
||
|
||
#if 0
|
||
/* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16,
|
||
then we only want to write out the high-order 16 bits.
|
||
The subsequent R_MIPS_LO16 will handle the low-order bits. */
|
||
if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16
|
||
|| r_type == R_MIPS_GNU_REL_HI16)
|
||
addend = mips_elf64_high (addend);
|
||
else if (r_type == R_MIPS_HIGHER)
|
||
addend = mips_elf64_higher (addend);
|
||
else if (r_type == R_MIPS_HIGHEST)
|
||
addend = mips_elf64_highest (addend);
|
||
#endif
|
||
/* If the relocation is for an R_MIPS_26 relocation, then
|
||
the two low-order bits are not stored in the object file;
|
||
they are implicitly zero. */
|
||
if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2)
|
||
addend >>= 2;
|
||
|
||
if (rela_relocation_p)
|
||
/* If this is a RELA relocation, just update the addend.
|
||
We have to cast away constness for REL. */
|
||
rel->r_addend = addend;
|
||
else
|
||
{
|
||
/* Otherwise, we have to write the value back out. Note
|
||
that we use the source mask, rather than the
|
||
destination mask because the place to which we are
|
||
writing will be source of the addend in the final
|
||
link. */
|
||
addend &= howto->src_mask;
|
||
|
||
if (!mips_elf64_perform_relocation (info, howto, rel, addend,
|
||
input_bfd, input_section,
|
||
contents, false))
|
||
return false;
|
||
}
|
||
|
||
/* Go on to the next relocation. */
|
||
continue;
|
||
}
|
||
|
||
/* In the N32 and 64-bit ABIs there may be multiple consecutive
|
||
relocations for the same offset. In that case we are
|
||
supposed to treat the output of each relocation as the addend
|
||
for the next. */
|
||
if (rel + 1 < relend
|
||
&& rel->r_offset == rel[1].r_offset
|
||
&& ELF64_MIPS_R_TYPE (rel[1].r_info) != R_MIPS_NONE)
|
||
use_saved_addend_p = true;
|
||
else
|
||
use_saved_addend_p = false;
|
||
|
||
/* Figure out what value we are supposed to relocate. */
|
||
switch (mips_elf64_calculate_relocation (output_bfd, input_bfd,
|
||
input_section, info, rel,
|
||
addend, howto, local_syms,
|
||
local_sections, &value, &name,
|
||
&require_jalx))
|
||
{
|
||
case bfd_reloc_continue:
|
||
/* There's nothing to do. */
|
||
continue;
|
||
|
||
case bfd_reloc_undefined:
|
||
/* mips_elf64_calculate_relocation already called the
|
||
undefined_symbol callback. There's no real point in
|
||
trying to perform the relocation at this point, so we
|
||
just skip ahead to the next relocation. */
|
||
continue;
|
||
|
||
case bfd_reloc_notsupported:
|
||
msg = _("internal error: unsupported relocation error");
|
||
info->callbacks->warning
|
||
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
||
return false;
|
||
|
||
case bfd_reloc_overflow:
|
||
if (use_saved_addend_p)
|
||
/* Ignore overflow until we reach the last relocation for
|
||
a given location. */
|
||
;
|
||
else
|
||
{
|
||
BFD_ASSERT (name != NULL);
|
||
if (! ((*info->callbacks->reloc_overflow)
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset)))
|
||
return false;
|
||
}
|
||
break;
|
||
|
||
case bfd_reloc_ok:
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
break;
|
||
}
|
||
|
||
/* If we've got another relocation for the address, keep going
|
||
until we reach the last one. */
|
||
if (use_saved_addend_p)
|
||
{
|
||
addend = value;
|
||
continue;
|
||
}
|
||
|
||
/* Actually perform the relocation. */
|
||
if (!mips_elf64_perform_relocation (info, howto, rel, value, input_bfd,
|
||
input_section, contents,
|
||
require_jalx))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Create dynamic sections when linking against a dynamic object. */
|
||
|
||
boolean
|
||
mips_elf64_create_dynamic_sections (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
flagword flags;
|
||
register asection *s;
|
||
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED | SEC_READONLY);
|
||
|
||
/* Mips ABI requests the .dynamic section to be read only. */
|
||
s = bfd_get_section_by_name (abfd, ".dynamic");
|
||
if (s != NULL)
|
||
{
|
||
if (! bfd_set_section_flags (abfd, s, flags))
|
||
return false;
|
||
}
|
||
|
||
/* We need to create .got section. */
|
||
if (! mips_elf64_create_got_section (abfd, info))
|
||
return false;
|
||
|
||
/* Create the .msym section on IRIX6. It is used by the dynamic
|
||
linker to speed up dynamic relocations, and to avoid computing
|
||
the ELF hash for symbols. */
|
||
if (!mips_elf64_create_msym_section (abfd))
|
||
return false;
|
||
|
||
/* Create .stub section. */
|
||
if (bfd_get_section_by_name (abfd, ".MIPS.stubs") == NULL)
|
||
{
|
||
s = bfd_make_section (abfd, ".MIPS.stubs");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags | SEC_CODE)
|
||
|| ! bfd_set_section_alignment (abfd, s, 3))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* 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. */
|
||
|
||
boolean
|
||
mips_elf64_adjust_dynamic_symbol (info, h)
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
{
|
||
bfd *dynobj;
|
||
struct mips_elf64_link_hash_entry *hmips;
|
||
asection *s;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
/* Make sure we know what is going on here. */
|
||
BFD_ASSERT (dynobj != NULL
|
||
&& ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
|
||
|| h->weakdef != NULL
|
||
|| ((h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
&& (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_REF_REGULAR) != 0
|
||
&& (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0)));
|
||
|
||
/* If this symbol is defined in a dynamic object, we need to copy
|
||
any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output
|
||
file. */
|
||
hmips = (struct mips_elf64_link_hash_entry *) h;
|
||
if (! info->relocateable
|
||
&& hmips->possibly_dynamic_relocs != 0
|
||
&& (h->root.type == bfd_link_hash_defweak
|
||
|| (h->elf_link_hash_flags
|
||
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|
||
{
|
||
mips_elf64_allocate_dynamic_relocations (dynobj,
|
||
hmips->possibly_dynamic_relocs);
|
||
if (hmips->readonly_reloc)
|
||
/* We tell the dynamic linker that there are relocations
|
||
against the text segment. */
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
|
||
/* For a function, create a stub, if allowed. */
|
||
if (! hmips->no_fn_stub
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
||
{
|
||
if (! elf_hash_table (info)->dynamic_sections_created)
|
||
return true;
|
||
|
||
/* If this symbol is not defined in a regular file, then set
|
||
the symbol to the stub location. This is required to make
|
||
function pointers compare as equal between the normal
|
||
executable and the shared library. */
|
||
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
||
{
|
||
/* We need .stub section. */
|
||
s = bfd_get_section_by_name (dynobj, ".MIPS.stubs");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
h->root.u.def.section = s;
|
||
h->root.u.def.value = s->_raw_size;
|
||
|
||
/* XXX Write this stub address somewhere. */
|
||
h->plt.offset = s->_raw_size;
|
||
|
||
/* Make room for this stub code. */
|
||
s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
|
||
|
||
/* The last half word of the stub will be filled with the index
|
||
of this symbol in .dynsym section. */
|
||
return true;
|
||
}
|
||
}
|
||
else if ((h->type == STT_FUNC)
|
||
&& (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0)
|
||
{
|
||
/* This will set the entry for this symbol in the GOT to 0, and
|
||
the dynamic linker will take care of this. */
|
||
h->root.u.def.value = 0;
|
||
return true;
|
||
}
|
||
|
||
/* 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->weakdef != NULL)
|
||
{
|
||
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|
||
|| h->weakdef->root.type == bfd_link_hash_defweak);
|
||
h->root.u.def.section = h->weakdef->root.u.def.section;
|
||
h->root.u.def.value = h->weakdef->root.u.def.value;
|
||
return true;
|
||
}
|
||
|
||
/* This is a reference to a symbol defined by a dynamic object which
|
||
is not a function. */
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This function is called after all the input files have been read,
|
||
and the input sections have been assigned to output sections. */
|
||
|
||
boolean
|
||
mips_elf64_always_size_sections (output_bfd, info)
|
||
bfd *output_bfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
{
|
||
if (info->relocateable
|
||
|| ! mips_elf64_hash_table (info)->mips16_stubs_seen)
|
||
return true;
|
||
|
||
mips_elf64_link_hash_traverse (mips_elf64_hash_table (info),
|
||
mips_elf64_check_mips16_stubs,
|
||
(PTR) NULL);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Check the mips16 stubs for a particular symbol, and see if we can
|
||
discard them. */
|
||
|
||
static boolean
|
||
mips_elf64_check_mips16_stubs (h, data)
|
||
struct mips_elf64_link_hash_entry *h;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
{
|
||
if (h->fn_stub != NULL
|
||
&& ! h->need_fn_stub)
|
||
{
|
||
/* We don't need the fn_stub; the only references to this symbol
|
||
are 16 bit calls. Clobber the size to 0 to prevent it from
|
||
being included in the link. */
|
||
h->fn_stub->_raw_size = 0;
|
||
h->fn_stub->_cooked_size = 0;
|
||
h->fn_stub->flags &= ~SEC_RELOC;
|
||
h->fn_stub->reloc_count = 0;
|
||
h->fn_stub->flags |= SEC_EXCLUDE;
|
||
}
|
||
|
||
if (h->call_stub != NULL
|
||
&& h->root.other == STO_MIPS16)
|
||
{
|
||
/* We don't need the call_stub; this is a 16 bit function, so
|
||
calls from other 16 bit functions are OK. Clobber the size
|
||
to 0 to prevent it from being included in the link. */
|
||
h->call_stub->_raw_size = 0;
|
||
h->call_stub->_cooked_size = 0;
|
||
h->call_stub->flags &= ~SEC_RELOC;
|
||
h->call_stub->reloc_count = 0;
|
||
h->call_stub->flags |= SEC_EXCLUDE;
|
||
}
|
||
|
||
if (h->call_fp_stub != NULL
|
||
&& h->root.other == STO_MIPS16)
|
||
{
|
||
/* We don't need the call_stub; this is a 16 bit function, so
|
||
calls from other 16 bit functions are OK. Clobber the size
|
||
to 0 to prevent it from being included in the link. */
|
||
h->call_fp_stub->_raw_size = 0;
|
||
h->call_fp_stub->_cooked_size = 0;
|
||
h->call_fp_stub->flags &= ~SEC_RELOC;
|
||
h->call_fp_stub->reloc_count = 0;
|
||
h->call_fp_stub->flags |= SEC_EXCLUDE;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Set the sizes of the dynamic sections. */
|
||
|
||
boolean
|
||
mips_elf64_size_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *s;
|
||
boolean reltext;
|
||
struct mips_elf64_got_info *g = NULL;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
BFD_ASSERT (dynobj != NULL);
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Set the contents of the .interp section to the interpreter. */
|
||
if (! info->shared)
|
||
{
|
||
s = bfd_get_section_by_name (dynobj, ".interp");
|
||
BFD_ASSERT (s != NULL);
|
||
s->_raw_size = strlen ("/usr/lib64/libc.so.1") + 1;
|
||
s->contents = (bfd_byte *) "/usr/lib64/libc.so.1";
|
||
}
|
||
}
|
||
|
||
/* The check_relocs and adjust_dynamic_symbol entry points have
|
||
determined the sizes of the various dynamic sections. Allocate
|
||
memory for them. */
|
||
reltext = false;
|
||
for (s = dynobj->sections; s != NULL; s = s->next)
|
||
{
|
||
const char *name;
|
||
boolean strip;
|
||
|
||
/* 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 ((s->flags & SEC_LINKER_CREATED) == 0)
|
||
continue;
|
||
|
||
strip = false;
|
||
|
||
if (strncmp (name, ".rel", 4) == 0)
|
||
{
|
||
if (s->_raw_size == 0)
|
||
{
|
||
/* We only strip the section if the output section name
|
||
has the same name. Otherwise, there might be several
|
||
input sections for this output section. FIXME: This
|
||
code is probably not needed these days anyhow, since
|
||
the linker now does not create empty output sections. */
|
||
if (s->output_section != NULL
|
||
&& strcmp (name,
|
||
bfd_get_section_name (s->output_section->owner,
|
||
s->output_section)) == 0)
|
||
strip = true;
|
||
}
|
||
else
|
||
{
|
||
const char *outname;
|
||
asection *target;
|
||
|
||
/* If this relocation section applies to a read only
|
||
section, then we probably need a DT_TEXTREL entry.
|
||
If the relocation section is .rel.dyn, we always
|
||
assert a DT_TEXTREL entry rather than testing whether
|
||
there exists a relocation to a read only section or
|
||
not. */
|
||
outname = bfd_get_section_name (output_bfd,
|
||
s->output_section);
|
||
target = bfd_get_section_by_name (output_bfd, outname + 4);
|
||
if ((target != NULL
|
||
&& (target->flags & SEC_READONLY) != 0
|
||
&& (target->flags & SEC_ALLOC) != 0)
|
||
|| strcmp (outname, "rel.dyn") == 0)
|
||
reltext = true;
|
||
|
||
/* We use the reloc_count field as a counter if we need
|
||
to copy relocs into the output file. */
|
||
if (strcmp (name, "rel.dyn") != 0)
|
||
s->reloc_count = 0;
|
||
}
|
||
}
|
||
else if (strncmp (name, ".got", 4) == 0)
|
||
{
|
||
int i;
|
||
bfd_size_type loadable_size = 0;
|
||
bfd_size_type local_gotno;
|
||
bfd *sub;
|
||
|
||
BFD_ASSERT (elf_section_data (s) != NULL);
|
||
g = (struct mips_elf64_got_info *) elf_section_data (s)->tdata;
|
||
BFD_ASSERT (g != NULL);
|
||
|
||
/* Calculate the total loadable size of the output. That
|
||
will give us the maximum number of GOT_PAGE entries
|
||
required. */
|
||
for (sub = info->input_bfds; sub; sub = sub->link_next)
|
||
{
|
||
asection *subsection;
|
||
|
||
for (subsection = sub->sections;
|
||
subsection;
|
||
subsection = subsection->next)
|
||
{
|
||
if ((subsection->flags & SEC_ALLOC) == 0)
|
||
continue;
|
||
loadable_size += (subsection->_raw_size + 0xf) & ~0xf;
|
||
}
|
||
}
|
||
loadable_size += MIPS_FUNCTION_STUB_SIZE;
|
||
|
||
/* Assume there are two loadable segments consisting of
|
||
contiguous sections. Is 5 enough? */
|
||
local_gotno = (loadable_size >> 16) + 5;
|
||
/* It's possible we will need GOT_PAGE entries as well as
|
||
GOT16 entries. Often, these will be able to share GOT
|
||
entries, but not always. */
|
||
local_gotno *= 2;
|
||
|
||
g->local_gotno += local_gotno;
|
||
s->_raw_size += local_gotno * 8;
|
||
|
||
/* There has to be a global GOT entry for every symbol with
|
||
a dynamic symbol table index of DT_MIPS_GOTSYM or
|
||
higher. Therefore, it make sense to put those symbols
|
||
that need GOT entries at the end of the symbol table. We
|
||
do that here. */
|
||
if (!mips_elf64_sort_hash_table (info, 1))
|
||
return false;
|
||
|
||
if (g->global_gotsym != NULL)
|
||
i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx;
|
||
else
|
||
/* If there are no global symbols, or none requiring
|
||
relocations, then GLOBAL_GOTSYM will be NULL. */
|
||
i = 0;
|
||
g->global_gotno = i;
|
||
s->_raw_size += i * 8;
|
||
}
|
||
else if (strcmp (name, ".MIPS.stubs") == 0)
|
||
{
|
||
/* Irix rld assumes that the function stub isn't at the end
|
||
of .text section. So put a dummy. XXX */
|
||
s->_raw_size += MIPS_FUNCTION_STUB_SIZE;
|
||
}
|
||
else if (strcmp (name, ".msym")
|
||
== 0)
|
||
s->_raw_size = (sizeof (Elf32_External_Msym)
|
||
* (elf_hash_table (info)->dynsymcount
|
||
+ bfd_count_sections (output_bfd)));
|
||
else if (strncmp (name, ".init", 5) != 0)
|
||
{
|
||
/* It's not one of our sections, so don't allocate space. */
|
||
continue;
|
||
}
|
||
|
||
if (strip)
|
||
{
|
||
_bfd_strip_section_from_output (info, s);
|
||
continue;
|
||
}
|
||
|
||
/* Allocate memory for the section contents. */
|
||
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
|
||
if (s->contents == NULL && s->_raw_size != 0)
|
||
{
|
||
bfd_set_error (bfd_error_no_memory);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
/* Add some entries to the .dynamic section. We fill in the
|
||
values later, in elf_mips_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. */
|
||
if (! info->shared)
|
||
{
|
||
/* SGI object has the equivalence of DT_DEBUG in the
|
||
DT_MIPS_RLD_MAP entry. */
|
||
if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0))
|
||
return false;
|
||
if (!SGI_COMPAT (output_bfd))
|
||
{
|
||
if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
|
||
return false;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Shared libraries on traditional mips have DT_DEBUG. */
|
||
if (!SGI_COMPAT (output_bfd))
|
||
{
|
||
if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (reltext && SGI_COMPAT (output_bfd))
|
||
info->flags |= DF_TEXTREL;
|
||
|
||
if ((info->flags & DF_TEXTREL) != 0)
|
||
{
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
|
||
return false;
|
||
}
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0))
|
||
return false;
|
||
|
||
if (bfd_get_section_by_name (dynobj, "rel.dyn"))
|
||
{
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_REL, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_RELSZ, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_RELENT, 0))
|
||
return false;
|
||
}
|
||
|
||
if (SGI_COMPAT (output_bfd))
|
||
{
|
||
if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0))
|
||
return false;
|
||
}
|
||
|
||
if (SGI_COMPAT (output_bfd))
|
||
{
|
||
if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0))
|
||
return false;
|
||
}
|
||
|
||
if (bfd_get_section_by_name (dynobj, ".conflict") != NULL)
|
||
{
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0))
|
||
return false;
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".liblist");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0))
|
||
return false;
|
||
}
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_FLAGS, 0))
|
||
return false;
|
||
|
||
#if 0
|
||
/* Time stamps in executable files are a bad idea. */
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0))
|
||
return false;
|
||
#endif
|
||
|
||
#if 0 /* FIXME */
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0))
|
||
return false;
|
||
#endif
|
||
|
||
#if 0 /* FIXME */
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_IVERSION, 0))
|
||
return false;
|
||
#endif
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0))
|
||
return false;
|
||
|
||
if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0))
|
||
return false;
|
||
|
||
if ((bfd_get_section_by_name(dynobj, ".MIPS.options"))
|
||
&& !bfd_elf64_add_dynamic_entry (info, DT_MIPS_OPTIONS, 0))
|
||
return false;
|
||
|
||
if (bfd_get_section_by_name (dynobj, ".msym")
|
||
&& !bfd_elf64_add_dynamic_entry (info, DT_MIPS_MSYM, 0))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up dynamic symbol handling. We set the contents of various
|
||
dynamic sections here. */
|
||
|
||
boolean
|
||
mips_elf64_finish_dynamic_symbol (output_bfd, info, h, sym)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym *sym;
|
||
{
|
||
bfd *dynobj;
|
||
bfd_vma gval;
|
||
asection *sgot;
|
||
asection *smsym;
|
||
struct mips_elf64_got_info *g;
|
||
const char *name;
|
||
struct mips_elf64_link_hash_entry *mh;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
gval = sym->st_value;
|
||
mh = (struct mips_elf64_link_hash_entry *) h;
|
||
|
||
if (h->plt.offset != (bfd_vma) -1)
|
||
{
|
||
asection *s;
|
||
bfd_byte stub[MIPS_FUNCTION_STUB_SIZE];
|
||
|
||
/* This symbol has a stub. Set it up. */
|
||
|
||
BFD_ASSERT (h->dynindx != -1);
|
||
|
||
s = bfd_get_section_by_name (dynobj, ".MIPS.stubs");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
/* FIXME: Can h->dynindex be more than 64K? */
|
||
if (h->dynindx & 0xffff0000)
|
||
return false;
|
||
|
||
/* Fill the stub. */
|
||
bfd_put_32 (output_bfd, STUB_LW, stub);
|
||
bfd_put_32 (output_bfd, STUB_MOVE, stub + 4);
|
||
bfd_put_32 (output_bfd, STUB_JALR, stub + 8);
|
||
bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, stub + 12);
|
||
|
||
BFD_ASSERT (h->plt.offset <= s->_raw_size);
|
||
memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE);
|
||
|
||
/* Mark the symbol as undefined. plt.offset != -1 occurs
|
||
only for the referenced symbol. */
|
||
sym->st_shndx = SHN_UNDEF;
|
||
|
||
/* The run-time linker uses the st_value field of the symbol
|
||
to reset the global offset table entry for this external
|
||
to its stub address when unlinking a shared object. */
|
||
gval = s->output_section->vma + s->output_offset + h->plt.offset;
|
||
sym->st_value = gval;
|
||
}
|
||
|
||
BFD_ASSERT (h->dynindx != -1
|
||
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0);
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
BFD_ASSERT (sgot != NULL);
|
||
BFD_ASSERT (elf_section_data (sgot) != NULL);
|
||
g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata;
|
||
BFD_ASSERT (g != NULL);
|
||
|
||
/* Run through the global symbol table, creating GOT entries for all
|
||
the symbols that need them. */
|
||
if (g->global_gotsym != NULL
|
||
&& h->dynindx >= g->global_gotsym->dynindx)
|
||
{
|
||
bfd_vma offset;
|
||
bfd_vma value;
|
||
|
||
if (sym->st_value)
|
||
value = sym->st_value;
|
||
else
|
||
{
|
||
/* For an entity defined in a shared object, this will be
|
||
NULL. (For functions in shared objects for
|
||
which we have created stubs, ST_VALUE will be non-NULL.
|
||
That's because such the functions are now no longer defined
|
||
in a shared object.) */
|
||
|
||
if (info->shared && h->root.type == bfd_link_hash_undefined)
|
||
value = 0;
|
||
else
|
||
value = h->root.u.def.value;
|
||
}
|
||
offset = mips_elf64_global_got_index (dynobj, h);
|
||
bfd_put_64 (output_bfd, value, sgot->contents + offset);
|
||
}
|
||
|
||
/* Create a .msym entry, if appropriate. */
|
||
smsym = bfd_get_section_by_name (dynobj, ".msym");
|
||
if (smsym)
|
||
{
|
||
Elf32_Internal_Msym msym;
|
||
|
||
msym.ms_hash_value = bfd_elf_hash (h->root.root.string);
|
||
/* It is undocumented what the `1' indicates, but IRIX6 uses
|
||
this value. */
|
||
msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1);
|
||
mips_elf64_swap_msym_out
|
||
(dynobj, &msym,
|
||
((Elf32_External_Msym *) smsym->contents) + h->dynindx);
|
||
}
|
||
|
||
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
||
name = h->root.root.string;
|
||
if (strcmp (name, "_DYNAMIC") == 0
|
||
|| strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
|
||
sym->st_shndx = SHN_ABS;
|
||
else if (strcmp (name, "_DYNAMIC_LINK") == 0
|
||
|| strcmp (name, "_DYNAMIC_LINKING") == 0)
|
||
{
|
||
sym->st_shndx = SHN_ABS;
|
||
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
|
||
sym->st_value = 1;
|
||
}
|
||
else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS)
|
||
{
|
||
if (h->type == STT_FUNC)
|
||
sym->st_shndx = SHN_MIPS_TEXT;
|
||
else if (h->type == STT_OBJECT)
|
||
sym->st_shndx = SHN_MIPS_DATA;
|
||
}
|
||
|
||
/* Handle the IRIX6-specific symbols. */
|
||
|
||
{
|
||
/* The linker script takes care of providing names and values for
|
||
these, but we must place them into the right sections. */
|
||
static const char* const text_section_symbols[] = {
|
||
"_ftext",
|
||
"_etext",
|
||
"__dso_displacement",
|
||
"__elf_header",
|
||
"__program_header_table",
|
||
NULL
|
||
};
|
||
|
||
static const char* const data_section_symbols[] = {
|
||
"_fdata",
|
||
"_edata",
|
||
"_end",
|
||
"_fbss",
|
||
NULL
|
||
};
|
||
|
||
const char* const *p;
|
||
int i;
|
||
|
||
for (i = 0; i < 2; ++i)
|
||
for (p = (i == 0) ? text_section_symbols : data_section_symbols;
|
||
*p;
|
||
++p)
|
||
if (strcmp (*p, name) == 0)
|
||
{
|
||
/* All of these symbols are given type STT_SECTION by the
|
||
IRIX6 linker. */
|
||
sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
|
||
|
||
/* The IRIX linker puts these symbols in special sections. */
|
||
if (i == 0)
|
||
sym->st_shndx = SHN_MIPS_TEXT;
|
||
else
|
||
sym->st_shndx = SHN_MIPS_DATA;
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Finish up the dynamic sections. */
|
||
|
||
boolean
|
||
mips_elf64_finish_dynamic_sections (output_bfd, info)
|
||
bfd *output_bfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
bfd *dynobj;
|
||
asection *sdyn;
|
||
asection *sgot;
|
||
struct mips_elf64_got_info *g;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
|
||
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
||
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
if (sgot == NULL)
|
||
g = NULL;
|
||
else
|
||
{
|
||
BFD_ASSERT (elf_section_data (sgot) != NULL);
|
||
g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata;
|
||
BFD_ASSERT (g != NULL);
|
||
}
|
||
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
bfd_byte *b;
|
||
|
||
BFD_ASSERT (sdyn != NULL);
|
||
BFD_ASSERT (g != NULL);
|
||
|
||
for (b = sdyn->contents;
|
||
b < sdyn->contents + sdyn->_raw_size;
|
||
b += get_elf_backend_data (dynobj)->s->sizeof_dyn)
|
||
{
|
||
Elf_Internal_Dyn dyn;
|
||
const char *name;
|
||
size_t elemsize;
|
||
asection *s;
|
||
boolean swap_out_p;
|
||
|
||
/* Read in the current dynamic entry. */
|
||
(*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn);
|
||
|
||
/* Assume that we're going to modify it and write it out. */
|
||
swap_out_p = true;
|
||
|
||
switch (dyn.d_tag)
|
||
{
|
||
case DT_RELENT:
|
||
s = bfd_get_section_by_name(dynobj, "rel.dyn");
|
||
BFD_ASSERT (s != NULL);
|
||
dyn.d_un.d_val = get_elf_backend_data (dynobj)->s->sizeof_rel;
|
||
break;
|
||
|
||
case DT_STRSZ:
|
||
/* Rewrite DT_STRSZ. */
|
||
dyn.d_un.d_val =
|
||
_bfd_elf_strtab_size (elf_hash_table (info)->dynstr);
|
||
break;
|
||
|
||
case DT_PLTGOT:
|
||
name = ".got";
|
||
goto get_vma;
|
||
case DT_MIPS_CONFLICT:
|
||
name = ".conflict";
|
||
goto get_vma;
|
||
case DT_MIPS_LIBLIST:
|
||
name = ".liblist";
|
||
get_vma:
|
||
s = bfd_get_section_by_name (output_bfd, name);
|
||
BFD_ASSERT (s != NULL);
|
||
dyn.d_un.d_ptr = s->vma;
|
||
break;
|
||
|
||
case DT_MIPS_RLD_VERSION:
|
||
dyn.d_un.d_val = 1; /* XXX */
|
||
break;
|
||
|
||
case DT_MIPS_FLAGS:
|
||
dyn.d_un.d_val = RHF_NOTPOT; /* XXX */
|
||
break;
|
||
|
||
case DT_MIPS_CONFLICTNO:
|
||
name = ".conflict";
|
||
elemsize = sizeof (Elf32_Conflict);
|
||
goto set_elemno;
|
||
|
||
case DT_MIPS_LIBLISTNO:
|
||
name = ".liblist";
|
||
elemsize = sizeof (Elf32_Lib);
|
||
set_elemno:
|
||
s = bfd_get_section_by_name (output_bfd, name);
|
||
if (s != NULL)
|
||
{
|
||
if (s->_cooked_size != 0)
|
||
dyn.d_un.d_val = s->_cooked_size / elemsize;
|
||
else
|
||
dyn.d_un.d_val = s->_raw_size / elemsize;
|
||
}
|
||
else
|
||
dyn.d_un.d_val = 0;
|
||
break;
|
||
|
||
case DT_MIPS_TIME_STAMP:
|
||
time ((time_t *) &dyn.d_un.d_val);
|
||
break;
|
||
|
||
case DT_MIPS_ICHECKSUM:
|
||
/* XXX FIXME: */
|
||
swap_out_p = false;
|
||
break;
|
||
|
||
case DT_MIPS_IVERSION:
|
||
/* XXX FIXME: */
|
||
swap_out_p = false;
|
||
break;
|
||
|
||
case DT_MIPS_BASE_ADDRESS:
|
||
s = output_bfd->sections;
|
||
BFD_ASSERT (s != NULL);
|
||
dyn.d_un.d_ptr = s->vma & ~(0xffff);
|
||
break;
|
||
|
||
case DT_MIPS_LOCAL_GOTNO:
|
||
dyn.d_un.d_val = g->local_gotno;
|
||
break;
|
||
|
||
case DT_MIPS_UNREFEXTNO:
|
||
/* The index into the dynamic symbol table which is the
|
||
entry of the first external symbol that is not
|
||
referenced within the same object. */
|
||
dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1;
|
||
break;
|
||
|
||
case DT_MIPS_GOTSYM:
|
||
if (g->global_gotsym)
|
||
{
|
||
dyn.d_un.d_val = g->global_gotsym->dynindx;
|
||
break;
|
||
}
|
||
/* In case if we don't have global got symbols we default
|
||
to setting DT_MIPS_GOTSYM to the same value as
|
||
DT_MIPS_SYMTABNO, so we just fall through. */
|
||
|
||
case DT_MIPS_SYMTABNO:
|
||
name = ".dynsym";
|
||
elemsize = get_elf_backend_data (output_bfd)->s->sizeof_sym;
|
||
s = bfd_get_section_by_name (output_bfd, name);
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
if (s->_cooked_size != 0)
|
||
dyn.d_un.d_val = s->_cooked_size / elemsize;
|
||
else
|
||
dyn.d_un.d_val = s->_raw_size / elemsize;
|
||
break;
|
||
|
||
case DT_MIPS_HIPAGENO:
|
||
dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO;
|
||
break;
|
||
|
||
case DT_MIPS_OPTIONS:
|
||
s = bfd_get_section_by_name(output_bfd, ".MIPS.options");
|
||
dyn.d_un.d_ptr = s->vma;
|
||
break;
|
||
|
||
case DT_MIPS_MSYM:
|
||
s = bfd_get_section_by_name(output_bfd, ".msym");
|
||
dyn.d_un.d_ptr = s->vma;
|
||
break;
|
||
|
||
default:
|
||
swap_out_p = false;
|
||
break;
|
||
}
|
||
|
||
if (swap_out_p)
|
||
(*get_elf_backend_data (dynobj)->s->swap_dyn_out)
|
||
(dynobj, &dyn, b);
|
||
}
|
||
}
|
||
|
||
/* The first entry of the global offset table will be filled at
|
||
runtime. The second entry will be used by some runtime loaders.
|
||
This isn't the case of Irix rld. */
|
||
if (sgot != NULL && sgot->_raw_size > 0)
|
||
{
|
||
bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
|
||
bfd_put_64 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 8);
|
||
}
|
||
|
||
if (sgot != NULL)
|
||
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
|
||
|
||
{
|
||
asection *smsym;
|
||
asection *s;
|
||
|
||
/* ??? The section symbols for the output sections were set up in
|
||
_bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these
|
||
symbols. Should we do so? */
|
||
|
||
smsym = bfd_get_section_by_name (dynobj, ".msym");
|
||
if (smsym != NULL)
|
||
{
|
||
Elf32_Internal_Msym msym;
|
||
|
||
msym.ms_hash_value = 0;
|
||
msym.ms_info = ELF32_MS_INFO (0, 1);
|
||
|
||
for (s = output_bfd->sections; s != NULL; s = s->next)
|
||
{
|
||
long dynindx = elf_section_data (s)->dynindx;
|
||
|
||
mips_elf64_swap_msym_out
|
||
(output_bfd, &msym,
|
||
(((Elf32_External_Msym *) smsym->contents)
|
||
+ dynindx));
|
||
}
|
||
}
|
||
|
||
/* Clean up a first relocation in .rel.dyn. */
|
||
s = bfd_get_section_by_name (dynobj, "rel.dyn");
|
||
if (s != NULL && s->_raw_size > 0)
|
||
memset (s->contents, 0, get_elf_backend_data (dynobj)->s->sizeof_rel);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
asection *
|
||
mips_elf64_gc_mark_hook (abfd, info, rel, h, sym)
|
||
bfd *abfd;
|
||
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 (ELF64_R_TYPE (rel->r_info))
|
||
{
|
||
case R_MIPS_GNU_VTINHERIT:
|
||
case R_MIPS_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 (abfd, sym->st_shndx);
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
boolean
|
||
mips_elf64_gc_sweep_hook (abfd, info, sec, relocs)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
asection *sec ATTRIBUTE_UNUSED;
|
||
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
|
||
{
|
||
#if 0
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
bfd_signed_vma *local_got_refcounts;
|
||
const Elf_Internal_Rela *rel, *relend;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
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++)
|
||
switch (ELF64_R_TYPE (rel->r_info))
|
||
{
|
||
case R_MIPS_GOT16:
|
||
case R_MIPS_CALL16:
|
||
case R_MIPS_CALL_HI16:
|
||
case R_MIPS_CALL_LO16:
|
||
case R_MIPS_GOT_HI16:
|
||
case R_MIPS_GOT_LO16:
|
||
/* ??? It would seem that the existing MIPS code does no sort
|
||
of reference counting or whatnot on its GOT and PLT entries,
|
||
so it is not possible to garbage collect them at this time. */
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
#endif
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Create the .got section to hold the global offset table. */
|
||
|
||
static boolean
|
||
mips_elf64_create_got_section (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
flagword flags;
|
||
register asection *s;
|
||
struct elf_link_hash_entry *h;
|
||
struct mips_elf64_got_info *g;
|
||
|
||
/* This function may be called more than once. */
|
||
if (bfd_get_section_by_name (abfd, ".got"))
|
||
return true;
|
||
|
||
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED);
|
||
|
||
s = bfd_make_section (abfd, ".got");
|
||
if (s == NULL
|
||
|| ! bfd_set_section_flags (abfd, s, flags)
|
||
|| ! bfd_set_section_alignment (abfd, s, 4))
|
||
return false;
|
||
|
||
/* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the
|
||
linker script because we don't want to define the symbol if we
|
||
are not creating a global offset table. */
|
||
h = NULL;
|
||
if (! (_bfd_generic_link_add_one_symbol
|
||
(info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
|
||
(bfd_vma) 0, (const char *) NULL, false,
|
||
get_elf_backend_data (abfd)->collect,
|
||
(struct bfd_link_hash_entry **) &h)))
|
||
return false;
|
||
h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF;
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
||
h->type = STT_OBJECT;
|
||
|
||
if (info->shared
|
||
&& ! bfd_elf64_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
|
||
/* The first several global offset table entries are reserved. */
|
||
s->_raw_size = MIPS_RESERVED_GOTNO * (get_elf_backend_data (abfd)->s->arch_size / 8);
|
||
|
||
g = (struct mips_elf64_got_info *) bfd_alloc (abfd,
|
||
sizeof (struct mips_elf64_got_info));
|
||
if (g == NULL)
|
||
return false;
|
||
g->global_gotsym = NULL;
|
||
g->local_gotno = MIPS_RESERVED_GOTNO;
|
||
g->assigned_gotno = MIPS_RESERVED_GOTNO;
|
||
if (elf_section_data (s) == NULL)
|
||
{
|
||
s->used_by_bfd =
|
||
(PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data));
|
||
if (elf_section_data (s) == NULL)
|
||
return false;
|
||
}
|
||
elf_section_data (s)->tdata = (PTR) g;
|
||
elf_section_data (s)->this_hdr.sh_flags
|
||
|= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* If H is a symbol that needs a global GOT entry, but has a dynamic
|
||
symbol table index lower than any we've seen to date, record it for
|
||
posterity. */
|
||
|
||
static boolean
|
||
mips_elf64_record_global_got_symbol (h, info, g)
|
||
struct elf_link_hash_entry *h;
|
||
struct bfd_link_info *info;
|
||
struct mips_elf64_got_info *g ATTRIBUTE_UNUSED;
|
||
{
|
||
/* A global symbol in the GOT must also be in the dynamic symbol
|
||
table. */
|
||
if (h->dynindx == -1
|
||
&& !bfd_elf64_link_record_dynamic_symbol (info, h))
|
||
return false;
|
||
|
||
/* If we've already marked this entry as needing GOT space, we don't
|
||
need to do it again. */
|
||
if (h->got.offset != (bfd_vma) - 1)
|
||
return true;
|
||
|
||
/* By setting this to a value other than -1, we are indicating that
|
||
there needs to be a GOT entry for H. Avoid using zero, as the
|
||
generic ELF copy_indirect_symbol tests for <= 0. */
|
||
h->got.offset = 1;
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Returns the .msym section for ABFD, creating it if it does not
|
||
already exist. Returns NULL to indicate error. */
|
||
|
||
static asection *
|
||
mips_elf64_create_msym_section (abfd)
|
||
bfd *abfd;
|
||
{
|
||
asection *s;
|
||
|
||
s = bfd_get_section_by_name (abfd, ".msym");
|
||
if (!s)
|
||
{
|
||
s = bfd_make_section (abfd, ".msym");
|
||
if (!s
|
||
|| !bfd_set_section_flags (abfd, s,
|
||
SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY)
|
||
|| !bfd_set_section_alignment (abfd, s, 3))
|
||
return NULL;
|
||
}
|
||
|
||
return s;
|
||
}
|
||
|
||
/* Add room for N relocations to the .rel.dyn section in ABFD. */
|
||
|
||
static void
|
||
mips_elf64_allocate_dynamic_relocations (abfd, n)
|
||
bfd *abfd;
|
||
unsigned int n;
|
||
{
|
||
asection *s;
|
||
|
||
s = bfd_get_section_by_name (abfd, ".rel.dyn");
|
||
BFD_ASSERT (s != NULL);
|
||
|
||
if (s->_raw_size == 0)
|
||
{
|
||
/* Make room for a null element. */
|
||
s->_raw_size += get_elf_backend_data (abfd)->s->sizeof_rel;
|
||
++s->reloc_count;
|
||
}
|
||
s->_raw_size += n * get_elf_backend_data (abfd)->s->sizeof_rel;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase, and
|
||
allocate space in the global offset table. */
|
||
|
||
boolean
|
||
mips_elf64_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
const char *name;
|
||
bfd *dynobj;
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes;
|
||
struct mips_elf64_got_info *g;
|
||
size_t extsymoff;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
asection *sgot;
|
||
asection *sreloc;
|
||
struct elf_backend_data *bed;
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info;
|
||
|
||
/* Check for the mips16 stub sections. */
|
||
|
||
name = bfd_get_section_name (abfd, sec);
|
||
if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0)
|
||
{
|
||
unsigned long r_symndx;
|
||
|
||
/* Look at the relocation information to figure out which symbol
|
||
this is for. */
|
||
|
||
r_symndx = ELF64_R_SYM (relocs->r_info);
|
||
|
||
if (r_symndx < extsymoff
|
||
|| sym_hashes[r_symndx - extsymoff] == NULL)
|
||
{
|
||
asection *o;
|
||
|
||
/* This stub is for a local symbol. This stub will only be
|
||
needed if there is some relocation in this BFD, other
|
||
than a 16 bit function call, which refers to this symbol. */
|
||
for (o = abfd->sections; o != NULL; o = o->next)
|
||
{
|
||
Elf_Internal_Rela *sec_relocs;
|
||
const Elf_Internal_Rela *r, *rend;
|
||
|
||
/* We can ignore stub sections when looking for relocs. */
|
||
if ((o->flags & SEC_RELOC) == 0
|
||
|| o->reloc_count == 0
|
||
|| strncmp (bfd_get_section_name (abfd, o), FN_STUB,
|
||
sizeof FN_STUB - 1) == 0
|
||
|| strncmp (bfd_get_section_name (abfd, o), CALL_STUB,
|
||
sizeof CALL_STUB - 1) == 0
|
||
|| strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB,
|
||
sizeof CALL_FP_STUB - 1) == 0)
|
||
continue;
|
||
|
||
sec_relocs = (_bfd_elf64_link_read_relocs
|
||
(abfd, o, (PTR) NULL,
|
||
(Elf_Internal_Rela *) NULL,
|
||
info->keep_memory));
|
||
if (sec_relocs == NULL)
|
||
return false;
|
||
|
||
rend = sec_relocs + o->reloc_count;
|
||
for (r = sec_relocs; r < rend; r++)
|
||
if (ELF64_R_SYM (r->r_info) == r_symndx
|
||
&& ELF64_R_TYPE (r->r_info) != R_MIPS16_26)
|
||
break;
|
||
|
||
if (! info->keep_memory)
|
||
free (sec_relocs);
|
||
|
||
if (r < rend)
|
||
break;
|
||
}
|
||
|
||
if (o == NULL)
|
||
{
|
||
/* There is no non-call reloc for this stub, so we do
|
||
not need it. Since this function is called before
|
||
the linker maps input sections to output sections, we
|
||
can easily discard it by setting the SEC_EXCLUDE
|
||
flag. */
|
||
sec->flags |= SEC_EXCLUDE;
|
||
return true;
|
||
}
|
||
|
||
/* Record this stub in an array of local symbol stubs for
|
||
this BFD. */
|
||
if (elf_tdata (abfd)->local_stubs == NULL)
|
||
{
|
||
unsigned long symcount;
|
||
asection **n;
|
||
bfd_size_type amt;
|
||
|
||
if (elf_bad_symtab (abfd))
|
||
symcount = NUM_SHDR_ENTRIES (symtab_hdr);
|
||
else
|
||
symcount = symtab_hdr->sh_info;
|
||
amt = symcount * sizeof (asection *);
|
||
n = (asection **) bfd_zalloc (abfd, amt);
|
||
if (n == NULL)
|
||
return false;
|
||
elf_tdata (abfd)->local_stubs = n;
|
||
}
|
||
|
||
elf_tdata (abfd)->local_stubs[r_symndx] = sec;
|
||
|
||
/* We don't need to set mips16_stubs_seen in this case.
|
||
That flag is used to see whether we need to look through
|
||
the global symbol table for stubs. We don't need to set
|
||
it here, because we just have a local stub. */
|
||
}
|
||
else
|
||
{
|
||
struct mips_elf64_link_hash_entry *h;
|
||
|
||
h = ((struct mips_elf64_link_hash_entry *)
|
||
sym_hashes[r_symndx - extsymoff]);
|
||
|
||
/* H is the symbol this stub is for. */
|
||
|
||
h->fn_stub = sec;
|
||
mips_elf64_hash_table (info)->mips16_stubs_seen = true;
|
||
}
|
||
}
|
||
else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0
|
||
|| strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
|
||
{
|
||
unsigned long r_symndx;
|
||
struct mips_elf64_link_hash_entry *h;
|
||
asection **loc;
|
||
|
||
/* Look at the relocation information to figure out which symbol
|
||
this is for. */
|
||
|
||
r_symndx = ELF64_R_SYM (relocs->r_info);
|
||
|
||
if (r_symndx < extsymoff
|
||
|| sym_hashes[r_symndx - extsymoff] == NULL)
|
||
{
|
||
/* This stub was actually built for a static symbol defined
|
||
in the same file. We assume that all static symbols in
|
||
mips16 code are themselves mips16, so we can simply
|
||
discard this stub. Since this function is called before
|
||
the linker maps input sections to output sections, we can
|
||
easily discard it by setting the SEC_EXCLUDE flag. */
|
||
sec->flags |= SEC_EXCLUDE;
|
||
return true;
|
||
}
|
||
|
||
h = ((struct mips_elf64_link_hash_entry *)
|
||
sym_hashes[r_symndx - extsymoff]);
|
||
|
||
/* H is the symbol this stub is for. */
|
||
|
||
if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0)
|
||
loc = &h->call_fp_stub;
|
||
else
|
||
loc = &h->call_stub;
|
||
|
||
/* If we already have an appropriate stub for this function, we
|
||
don't need another one, so we can discard this one. Since
|
||
this function is called before the linker maps input sections
|
||
to output sections, we can easily discard it by setting the
|
||
SEC_EXCLUDE flag. We can also discard this section if we
|
||
happen to already know that this is a mips16 function; it is
|
||
not necessary to check this here, as it is checked later, but
|
||
it is slightly faster to check now. */
|
||
if (*loc != NULL || h->root.other == STO_MIPS16)
|
||
{
|
||
sec->flags |= SEC_EXCLUDE;
|
||
return true;
|
||
}
|
||
|
||
*loc = sec;
|
||
mips_elf64_hash_table (info)->mips16_stubs_seen = true;
|
||
}
|
||
|
||
if (dynobj == NULL)
|
||
{
|
||
sgot = NULL;
|
||
g = NULL;
|
||
}
|
||
else
|
||
{
|
||
sgot = bfd_get_section_by_name (dynobj, ".got");
|
||
if (sgot == NULL)
|
||
g = NULL;
|
||
else
|
||
{
|
||
BFD_ASSERT (elf_section_data (sgot) != NULL);
|
||
g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata;
|
||
BFD_ASSERT (g != NULL);
|
||
}
|
||
}
|
||
|
||
sreloc = NULL;
|
||
bed = get_elf_backend_data (abfd);
|
||
rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel;
|
||
for (rel = relocs; rel < rel_end; ++rel)
|
||
{
|
||
unsigned long r_symndx;
|
||
int r_type;
|
||
struct elf_link_hash_entry *h;
|
||
|
||
r_symndx = ELF64_R_SYM (rel->r_info);
|
||
r_type = ELF64_MIPS_R_TYPE (rel->r_info);
|
||
|
||
if (r_symndx < extsymoff)
|
||
h = NULL;
|
||
else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr))
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: Malformed reloc detected for section %s"),
|
||
bfd_archive_filename (abfd), name);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
else
|
||
{
|
||
h = sym_hashes[r_symndx - extsymoff];
|
||
|
||
/* This may be an indirect symbol created because of a version. */
|
||
if (h != NULL)
|
||
{
|
||
while (h->root.type == bfd_link_hash_indirect)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
}
|
||
}
|
||
|
||
/* Some relocs require a global offset table. */
|
||
if (dynobj == NULL || sgot == NULL)
|
||
{
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_GOT16:
|
||
case R_MIPS_CALL16:
|
||
case R_MIPS_CALL_HI16:
|
||
case R_MIPS_CALL_LO16:
|
||
case R_MIPS_GOT_HI16:
|
||
case R_MIPS_GOT_LO16:
|
||
case R_MIPS_GOT_PAGE:
|
||
case R_MIPS_GOT_OFST:
|
||
case R_MIPS_GOT_DISP:
|
||
if (dynobj == NULL)
|
||
elf_hash_table (info)->dynobj = dynobj = abfd;
|
||
if (! mips_elf64_create_got_section (dynobj, info))
|
||
return false;
|
||
g = _mips_elf64_got_info (dynobj, &sgot);
|
||
break;
|
||
|
||
case R_MIPS_32:
|
||
case R_MIPS_REL32:
|
||
case R_MIPS_64:
|
||
if (dynobj == NULL
|
||
&& (info->shared || h != NULL)
|
||
&& (sec->flags & SEC_ALLOC) != 0)
|
||
elf_hash_table (info)->dynobj = dynobj = abfd;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (!h && (r_type == R_MIPS_CALL_LO16
|
||
|| r_type == R_MIPS_GOT_LO16
|
||
|| r_type == R_MIPS_GOT_DISP))
|
||
{
|
||
/* We may need a local GOT entry for this relocation. We
|
||
don't count R_MIPS_GOT_PAGE because we can estimate the
|
||
maximum number of pages needed by looking at the size of
|
||
the segment. Similar comments apply to R_MIPS_GOT16 and
|
||
R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or
|
||
R_MIPS_CALL_HI16 because these are always followed by an
|
||
R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16.
|
||
|
||
This estimation is very conservative since we can merge
|
||
duplicate entries in the GOT. In order to be less
|
||
conservative, we could actually build the GOT here,
|
||
rather than in relocate_section. */
|
||
g->local_gotno++;
|
||
sgot->_raw_size += get_elf_backend_data (dynobj)->s->arch_size / 8;
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
case R_MIPS_CALL16:
|
||
if (h == NULL)
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: CALL16 reloc at 0x%lx not against global symbol"),
|
||
bfd_archive_filename (abfd), (unsigned long) rel->r_offset);
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
/* Fall through. */
|
||
|
||
case R_MIPS_CALL_HI16:
|
||
case R_MIPS_CALL_LO16:
|
||
if (h != NULL)
|
||
{
|
||
/* This symbol requires a global offset table entry. */
|
||
if (!mips_elf64_record_global_got_symbol (h, info, g))
|
||
return false;
|
||
|
||
/* We need a stub, not a plt entry for the undefined
|
||
function. But we record it as if it needs plt. See
|
||
elf_adjust_dynamic_symbol in elflink.h. */
|
||
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
||
h->type = STT_FUNC;
|
||
}
|
||
break;
|
||
|
||
case R_MIPS_GOT16:
|
||
case R_MIPS_GOT_HI16:
|
||
case R_MIPS_GOT_LO16:
|
||
case R_MIPS_GOT_DISP:
|
||
/* This symbol requires a global offset table entry. */
|
||
if (h && !mips_elf64_record_global_got_symbol (h, info, g))
|
||
return false;
|
||
break;
|
||
|
||
case R_MIPS_32:
|
||
case R_MIPS_REL32:
|
||
case R_MIPS_64:
|
||
if ((info->shared || h != NULL)
|
||
&& (sec->flags & SEC_ALLOC) != 0)
|
||
{
|
||
if (sreloc == NULL)
|
||
{
|
||
const char *name = ".rel.dyn";
|
||
|
||
sreloc = bfd_get_section_by_name (dynobj, name);
|
||
if (sreloc == NULL)
|
||
{
|
||
sreloc = bfd_make_section (dynobj, name);
|
||
if (sreloc == NULL
|
||
|| ! bfd_set_section_flags (dynobj, sreloc,
|
||
(SEC_ALLOC
|
||
| SEC_LOAD
|
||
| SEC_HAS_CONTENTS
|
||
| SEC_IN_MEMORY
|
||
| SEC_LINKER_CREATED
|
||
| SEC_READONLY))
|
||
|| ! bfd_set_section_alignment (dynobj, sreloc,
|
||
4))
|
||
return false;
|
||
}
|
||
}
|
||
#define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
|
||
if (info->shared)
|
||
{
|
||
/* When creating a shared object, we must copy these
|
||
reloc types into the output file as R_MIPS_REL32
|
||
relocs. We make room for this reloc in the
|
||
.rel.dyn reloc section. */
|
||
mips_elf64_allocate_dynamic_relocations (dynobj, 1);
|
||
if ((sec->flags & MIPS_READONLY_SECTION)
|
||
== MIPS_READONLY_SECTION)
|
||
/* We tell the dynamic linker that there are
|
||
relocations against the text segment. */
|
||
info->flags |= DF_TEXTREL;
|
||
}
|
||
else
|
||
{
|
||
struct mips_elf64_link_hash_entry *hmips;
|
||
|
||
/* We only need to copy this reloc if the symbol is
|
||
defined in a dynamic object. */
|
||
hmips = (struct mips_elf64_link_hash_entry *) h;
|
||
++hmips->possibly_dynamic_relocs;
|
||
if ((sec->flags & MIPS_READONLY_SECTION)
|
||
== MIPS_READONLY_SECTION)
|
||
/* We need it to tell the dynamic linker if there
|
||
are relocations against the text segment. */
|
||
hmips->readonly_reloc = true;
|
||
}
|
||
|
||
/* Even though we don't directly need a GOT entry for
|
||
this symbol, a symbol must have a dynamic symbol
|
||
table index greater that DT_MIPS_GOTSYM if there are
|
||
dynamic relocations against it. */
|
||
if (h != NULL
|
||
&& !mips_elf64_record_global_got_symbol (h, info, g))
|
||
return false;
|
||
}
|
||
break;
|
||
|
||
case R_MIPS_26:
|
||
case R_MIPS_GPREL16:
|
||
case R_MIPS_LITERAL:
|
||
case R_MIPS_GPREL32:
|
||
break;
|
||
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_MIPS_GNU_VTINHERIT:
|
||
if (!_bfd_elf64_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_MIPS_GNU_VTENTRY:
|
||
if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset))
|
||
return false;
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Structure used to pass information to mips_elf64_output_extsym. */
|
||
|
||
struct extsym_info
|
||
{
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
struct ecoff_debug_info *debug;
|
||
const struct ecoff_debug_swap *swap;
|
||
boolean failed;
|
||
};
|
||
|
||
/* This routine is used to write out ECOFF debugging external symbol
|
||
information. It is called via mips_elf64_link_hash_traverse. The
|
||
ECOFF external symbol information must match the ELF external
|
||
symbol information. Unfortunately, at this point we don't know
|
||
whether a symbol is required by reloc information, so the two
|
||
tables may wind up being different. We must sort out the external
|
||
symbol information before we can set the final size of the .mdebug
|
||
section, and we must set the size of the .mdebug section before we
|
||
can relocate any sections, and we can't know which symbols are
|
||
required by relocation until we relocate the sections.
|
||
Fortunately, it is relatively unlikely that any symbol will be
|
||
stripped but required by a reloc. In particular, it can not happen
|
||
when generating a final executable. */
|
||
|
||
static boolean
|
||
mips_elf64_output_extsym (h, data)
|
||
struct mips_elf64_link_hash_entry *h;
|
||
PTR data;
|
||
{
|
||
struct extsym_info *einfo = (struct extsym_info *) data;
|
||
boolean strip;
|
||
asection *sec, *output_section;
|
||
|
||
if (h->root.indx == -2)
|
||
strip = false;
|
||
else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
||
|| (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
|
||
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
|
||
&& (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
|
||
strip = true;
|
||
else if (einfo->info->strip == strip_all
|
||
|| (einfo->info->strip == strip_some
|
||
&& bfd_hash_lookup (einfo->info->keep_hash,
|
||
h->root.root.root.string,
|
||
false, false) == NULL))
|
||
strip = true;
|
||
else
|
||
strip = false;
|
||
|
||
if (strip)
|
||
return true;
|
||
|
||
if (h->esym.ifd == -2)
|
||
{
|
||
h->esym.jmptbl = 0;
|
||
h->esym.cobol_main = 0;
|
||
h->esym.weakext = 0;
|
||
h->esym.reserved = 0;
|
||
h->esym.ifd = ifdNil;
|
||
h->esym.asym.value = 0;
|
||
h->esym.asym.st = stGlobal;
|
||
|
||
if (h->root.root.type == bfd_link_hash_undefined
|
||
|| h->root.root.type == bfd_link_hash_undefweak)
|
||
{
|
||
const char *name;
|
||
|
||
/* Use undefined class. Also, set class and type for some
|
||
special symbols. */
|
||
name = h->root.root.root.string;
|
||
h->esym.asym.sc = scUndefined;
|
||
}
|
||
else if (h->root.root.type != bfd_link_hash_defined
|
||
&& h->root.root.type != bfd_link_hash_defweak)
|
||
h->esym.asym.sc = scAbs;
|
||
else
|
||
{
|
||
const char *name;
|
||
|
||
sec = h->root.root.u.def.section;
|
||
output_section = sec->output_section;
|
||
|
||
/* When making a shared library and symbol h is the one from
|
||
the another shared library, OUTPUT_SECTION may be null. */
|
||
if (output_section == NULL)
|
||
h->esym.asym.sc = scUndefined;
|
||
else
|
||
{
|
||
name = bfd_section_name (output_section->owner, output_section);
|
||
|
||
if (strcmp (name, ".text") == 0)
|
||
h->esym.asym.sc = scText;
|
||
else if (strcmp (name, ".data") == 0)
|
||
h->esym.asym.sc = scData;
|
||
else if (strcmp (name, ".sdata") == 0)
|
||
h->esym.asym.sc = scSData;
|
||
else if (strcmp (name, ".rodata") == 0
|
||
|| strcmp (name, ".rdata") == 0)
|
||
h->esym.asym.sc = scRData;
|
||
else if (strcmp (name, ".bss") == 0)
|
||
h->esym.asym.sc = scBss;
|
||
else if (strcmp (name, ".sbss") == 0)
|
||
h->esym.asym.sc = scSBss;
|
||
else if (strcmp (name, ".init") == 0)
|
||
h->esym.asym.sc = scInit;
|
||
else if (strcmp (name, ".fini") == 0)
|
||
h->esym.asym.sc = scFini;
|
||
else
|
||
h->esym.asym.sc = scAbs;
|
||
}
|
||
}
|
||
|
||
h->esym.asym.reserved = 0;
|
||
h->esym.asym.index = indexNil;
|
||
}
|
||
|
||
if (h->root.root.type == bfd_link_hash_common)
|
||
h->esym.asym.value = h->root.root.u.c.size;
|
||
else if (h->root.root.type == bfd_link_hash_defined
|
||
|| h->root.root.type == bfd_link_hash_defweak)
|
||
{
|
||
if (h->esym.asym.sc == scCommon)
|
||
h->esym.asym.sc = scBss;
|
||
else if (h->esym.asym.sc == scSCommon)
|
||
h->esym.asym.sc = scSBss;
|
||
|
||
sec = h->root.root.u.def.section;
|
||
output_section = sec->output_section;
|
||
if (output_section != NULL)
|
||
h->esym.asym.value = (h->root.root.u.def.value
|
||
+ sec->output_offset
|
||
+ output_section->vma);
|
||
else
|
||
h->esym.asym.value = 0;
|
||
}
|
||
else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
||
{
|
||
struct mips_elf64_link_hash_entry *hd = h;
|
||
boolean no_fn_stub = h->no_fn_stub;
|
||
|
||
while (hd->root.root.type == bfd_link_hash_indirect)
|
||
{
|
||
hd = (struct mips_elf64_link_hash_entry *)h->root.root.u.i.link;
|
||
no_fn_stub = no_fn_stub || hd->no_fn_stub;
|
||
}
|
||
|
||
if (!no_fn_stub)
|
||
{
|
||
/* Set type and value for a symbol with a function stub. */
|
||
h->esym.asym.st = stProc;
|
||
sec = hd->root.root.u.def.section;
|
||
if (sec == NULL)
|
||
h->esym.asym.value = 0;
|
||
else
|
||
{
|
||
output_section = sec->output_section;
|
||
if (output_section != NULL)
|
||
h->esym.asym.value = (hd->root.plt.offset
|
||
+ sec->output_offset
|
||
+ output_section->vma);
|
||
else
|
||
h->esym.asym.value = 0;
|
||
}
|
||
#if 0 /* FIXME? */
|
||
h->esym.ifd = 0;
|
||
#endif
|
||
}
|
||
}
|
||
|
||
if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap,
|
||
h->root.root.root.string,
|
||
&h->esym))
|
||
{
|
||
einfo->failed = true;
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Swap an entry in a .gptab section. Note that these routines rely
|
||
on the equivalence of the two elements of the union. */
|
||
|
||
static void
|
||
mips_elf64_swap_gptab_in (abfd, ex, in)
|
||
bfd *abfd;
|
||
const Elf32_External_gptab *ex;
|
||
Elf32_gptab *in;
|
||
{
|
||
in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value);
|
||
in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes);
|
||
}
|
||
|
||
static void
|
||
mips_elf64_swap_gptab_out (abfd, in, ex)
|
||
bfd *abfd;
|
||
const Elf32_gptab *in;
|
||
Elf32_External_gptab *ex;
|
||
{
|
||
H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value,
|
||
ex->gt_entry.gt_g_value);
|
||
H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes,
|
||
ex->gt_entry.gt_bytes);
|
||
}
|
||
|
||
/* A comparison routine used to sort .gptab entries. */
|
||
|
||
static int
|
||
gptab_compare (p1, p2)
|
||
const PTR p1;
|
||
const PTR p2;
|
||
{
|
||
const Elf32_gptab *a1 = (const Elf32_gptab *) p1;
|
||
const Elf32_gptab *a2 = (const Elf32_gptab *) p2;
|
||
|
||
return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value;
|
||
}
|
||
|
||
/* We need to use a special link routine to handle the .mdebug section.
|
||
We need to merge all instances of this section together, not write
|
||
them all out sequentially. */
|
||
|
||
boolean
|
||
mips_elf64_final_link (abfd, info)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
{
|
||
asection **secpp;
|
||
asection *o;
|
||
struct bfd_link_order *p;
|
||
asection *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
|
||
struct ecoff_debug_info debug;
|
||
const struct ecoff_debug_swap *swap
|
||
= get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
|
||
HDRR *symhdr = &debug.symbolic_header;
|
||
PTR mdebug_handle = NULL;
|
||
asection *s;
|
||
EXTR esym;
|
||
unsigned int i;
|
||
static const char * const secname[] =
|
||
{ ".text", ".init", ".fini", ".data",
|
||
".rodata", ".sdata", ".sbss", ".bss" };
|
||
static const int sc[] = { scText, scInit, scFini, scData,
|
||
scRData, scSData, scSBss, scBss };
|
||
|
||
/* If all the things we linked together were PIC, but we're
|
||
producing an executable (rather than a shared object), then the
|
||
resulting file is CPIC (i.e., it calls PIC code.) */
|
||
if (!info->shared
|
||
&& !info->relocateable
|
||
&& elf_elfheader (abfd)->e_flags & EF_MIPS_PIC)
|
||
{
|
||
elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC;
|
||
elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC;
|
||
}
|
||
|
||
/* We'd carefully arranged the dynamic symbol indices, and then the
|
||
generic size_dynamic_sections renumbered them out from under us.
|
||
Rather than trying somehow to prevent the renumbering, just do
|
||
the sort again. */
|
||
if (elf_hash_table (info)->dynamic_sections_created)
|
||
{
|
||
bfd *dynobj;
|
||
asection *got;
|
||
struct mips_elf64_got_info *g;
|
||
|
||
/* When we resort, we must tell mips_elf64_sort_hash_table what
|
||
the lowest index it may use is. That's the number of section
|
||
symbols we're going to add. The generic ELF linker only
|
||
adds these symbols when building a shared object. Note that
|
||
we count the sections after (possibly) removing the .options
|
||
section above. */
|
||
if (!mips_elf64_sort_hash_table (info, (info->shared
|
||
? bfd_count_sections (abfd) + 1
|
||
: 1)))
|
||
return false;
|
||
|
||
/* Make sure we didn't grow the global .got region. */
|
||
dynobj = elf_hash_table (info)->dynobj;
|
||
got = bfd_get_section_by_name (dynobj, ".got");
|
||
g = (struct mips_elf64_got_info *) elf_section_data (got)->tdata;
|
||
|
||
if (g->global_gotsym != NULL)
|
||
BFD_ASSERT ((elf_hash_table (info)->dynsymcount
|
||
- g->global_gotsym->dynindx)
|
||
<= g->global_gotno);
|
||
}
|
||
|
||
/* We include .MIPS.options, even though we don't process it quite right.
|
||
(Some entries are supposed to be merged.) At IRIX6 empirically we seem
|
||
to be better off including it than not. */
|
||
for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next)
|
||
{
|
||
if (strcmp ((*secpp)->name, ".MIPS.options") == 0)
|
||
{
|
||
for (p = (*secpp)->link_order_head; p != NULL; p = p->next)
|
||
if (p->type == bfd_indirect_link_order)
|
||
p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS;
|
||
(*secpp)->link_order_head = NULL;
|
||
bfd_section_list_remove (abfd, secpp);
|
||
--abfd->section_count;
|
||
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Get a value for the GP register. */
|
||
if (elf_gp (abfd) == 0)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true);
|
||
if (h != (struct bfd_link_hash_entry *) NULL
|
||
&& h->type == bfd_link_hash_defined)
|
||
elf_gp (abfd) = (h->u.def.value
|
||
+ h->u.def.section->output_section->vma
|
||
+ h->u.def.section->output_offset);
|
||
else if (info->relocateable)
|
||
{
|
||
bfd_vma lo = MINUS_ONE;
|
||
|
||
/* Find the GP-relative section with the lowest offset. */
|
||
for (o = abfd->sections; o != NULL; o = o->next)
|
||
if (o->vma < lo
|
||
&& (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL))
|
||
lo = o->vma;
|
||
|
||
/* And calculate GP relative to that. */
|
||
elf_gp (abfd) = (lo + 0x7ff0);
|
||
}
|
||
else
|
||
{
|
||
/* If the relocate_section function needs to do a reloc
|
||
involving the GP value, it should make a reloc_dangerous
|
||
callback to warn that GP is not defined. */
|
||
}
|
||
}
|
||
|
||
/* Go through the sections and collect the .mdebug information. */
|
||
mdebug_sec = NULL;
|
||
gptab_data_sec = NULL;
|
||
gptab_bss_sec = NULL;
|
||
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
|
||
{
|
||
if (strcmp (o->name, ".mdebug") == 0)
|
||
{
|
||
struct extsym_info einfo;
|
||
bfd_vma last;
|
||
|
||
/* We have found the .mdebug section in the output file.
|
||
Look through all the link_orders comprising it and merge
|
||
the information together. */
|
||
symhdr->magic = swap->sym_magic;
|
||
/* FIXME: What should the version stamp be? */
|
||
symhdr->vstamp = 0;
|
||
symhdr->ilineMax = 0;
|
||
symhdr->cbLine = 0;
|
||
symhdr->idnMax = 0;
|
||
symhdr->ipdMax = 0;
|
||
symhdr->isymMax = 0;
|
||
symhdr->ioptMax = 0;
|
||
symhdr->iauxMax = 0;
|
||
symhdr->issMax = 0;
|
||
symhdr->issExtMax = 0;
|
||
symhdr->ifdMax = 0;
|
||
symhdr->crfd = 0;
|
||
symhdr->iextMax = 0;
|
||
|
||
/* We accumulate the debugging information itself in the
|
||
debug_info structure. */
|
||
debug.line = NULL;
|
||
debug.external_dnr = NULL;
|
||
debug.external_pdr = NULL;
|
||
debug.external_sym = NULL;
|
||
debug.external_opt = NULL;
|
||
debug.external_aux = NULL;
|
||
debug.ss = NULL;
|
||
debug.ssext = debug.ssext_end = NULL;
|
||
debug.external_fdr = NULL;
|
||
debug.external_rfd = NULL;
|
||
debug.external_ext = debug.external_ext_end = NULL;
|
||
|
||
mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info);
|
||
if (mdebug_handle == (PTR) NULL)
|
||
return false;
|
||
|
||
esym.jmptbl = 0;
|
||
esym.cobol_main = 0;
|
||
esym.weakext = 0;
|
||
esym.reserved = 0;
|
||
esym.ifd = ifdNil;
|
||
esym.asym.iss = issNil;
|
||
esym.asym.st = stLocal;
|
||
esym.asym.reserved = 0;
|
||
esym.asym.index = indexNil;
|
||
last = 0;
|
||
for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++)
|
||
{
|
||
esym.asym.sc = sc[i];
|
||
s = bfd_get_section_by_name (abfd, secname[i]);
|
||
if (s != NULL)
|
||
{
|
||
esym.asym.value = s->vma;
|
||
last = s->vma + s->_raw_size;
|
||
}
|
||
else
|
||
esym.asym.value = last;
|
||
if (!bfd_ecoff_debug_one_external (abfd, &debug, swap,
|
||
secname[i], &esym))
|
||
return false;
|
||
}
|
||
|
||
for (p = o->link_order_head;
|
||
p != (struct bfd_link_order *) NULL;
|
||
p = p->next)
|
||
{
|
||
asection *input_section;
|
||
bfd *input_bfd;
|
||
const struct ecoff_debug_swap *input_swap;
|
||
struct ecoff_debug_info input_debug;
|
||
char *eraw_src;
|
||
char *eraw_end;
|
||
|
||
if (p->type != bfd_indirect_link_order)
|
||
{
|
||
if (p->type == bfd_data_link_order)
|
||
continue;
|
||
abort ();
|
||
}
|
||
|
||
input_section = p->u.indirect.section;
|
||
input_bfd = input_section->owner;
|
||
|
||
if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour
|
||
|| (get_elf_backend_data (input_bfd)
|
||
->elf_backend_ecoff_debug_swap) == NULL)
|
||
{
|
||
/* I don't know what a non MIPS ELF bfd would be
|
||
doing with a .mdebug section, but I don't really
|
||
want to deal with it. */
|
||
continue;
|
||
}
|
||
|
||
input_swap = (get_elf_backend_data (input_bfd)
|
||
->elf_backend_ecoff_debug_swap);
|
||
|
||
BFD_ASSERT (p->size == input_section->_raw_size);
|
||
|
||
/* The ECOFF linking code expects that we have already
|
||
read in the debugging information and set up an
|
||
ecoff_debug_info structure, so we do that now. */
|
||
if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section,
|
||
&input_debug))
|
||
return false;
|
||
|
||
if (! (bfd_ecoff_debug_accumulate
|
||
(mdebug_handle, abfd, &debug, swap, input_bfd,
|
||
&input_debug, input_swap, info)))
|
||
return false;
|
||
|
||
/* Loop through the external symbols. For each one with
|
||
interesting information, try to find the symbol in
|
||
the linker global hash table and save the information
|
||
for the output external symbols. */
|
||
eraw_src = input_debug.external_ext;
|
||
eraw_end = (eraw_src
|
||
+ (input_debug.symbolic_header.iextMax
|
||
* input_swap->external_ext_size));
|
||
for (;
|
||
eraw_src < eraw_end;
|
||
eraw_src += input_swap->external_ext_size)
|
||
{
|
||
EXTR ext;
|
||
const char *name;
|
||
struct mips_elf64_link_hash_entry *h;
|
||
|
||
(*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext);
|
||
if (ext.asym.sc == scNil
|
||
|| ext.asym.sc == scUndefined
|
||
|| ext.asym.sc == scSUndefined)
|
||
continue;
|
||
|
||
name = input_debug.ssext + ext.asym.iss;
|
||
h = mips_elf64_link_hash_lookup (mips_elf64_hash_table (info),
|
||
name, false, false, true);
|
||
if (h == NULL || h->esym.ifd != -2)
|
||
continue;
|
||
|
||
if (ext.ifd != -1)
|
||
{
|
||
BFD_ASSERT (ext.ifd
|
||
< input_debug.symbolic_header.ifdMax);
|
||
ext.ifd = input_debug.ifdmap[ext.ifd];
|
||
}
|
||
|
||
h->esym = ext;
|
||
}
|
||
|
||
/* Free up the information we just read. */
|
||
free (input_debug.line);
|
||
free (input_debug.external_dnr);
|
||
free (input_debug.external_pdr);
|
||
free (input_debug.external_sym);
|
||
free (input_debug.external_opt);
|
||
free (input_debug.external_aux);
|
||
free (input_debug.ss);
|
||
free (input_debug.ssext);
|
||
free (input_debug.external_fdr);
|
||
free (input_debug.external_rfd);
|
||
free (input_debug.external_ext);
|
||
|
||
/* Hack: reset the SEC_HAS_CONTENTS flag so that
|
||
elf_link_input_bfd ignores this section. */
|
||
input_section->flags &=~ SEC_HAS_CONTENTS;
|
||
}
|
||
|
||
/* Build the external symbol information. */
|
||
einfo.abfd = abfd;
|
||
einfo.info = info;
|
||
einfo.debug = &debug;
|
||
einfo.swap = swap;
|
||
einfo.failed = false;
|
||
mips_elf64_link_hash_traverse (mips_elf64_hash_table (info),
|
||
mips_elf64_output_extsym,
|
||
(PTR) &einfo);
|
||
if (einfo.failed)
|
||
return false;
|
||
|
||
/* Set the size of the .mdebug section. */
|
||
o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap);
|
||
|
||
/* Skip this section later on (I don't think this currently
|
||
matters, but someday it might). */
|
||
o->link_order_head = (struct bfd_link_order *) NULL;
|
||
|
||
mdebug_sec = o;
|
||
}
|
||
|
||
if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0)
|
||
{
|
||
const char *subname;
|
||
unsigned int c;
|
||
Elf32_gptab *tab;
|
||
Elf32_External_gptab *ext_tab;
|
||
unsigned int i;
|
||
|
||
/* The .gptab.sdata and .gptab.sbss sections hold
|
||
information describing how the small data area would
|
||
change depending upon the -G switch. These sections
|
||
not used in executables files. */
|
||
if (! info->relocateable)
|
||
{
|
||
asection **secpp;
|
||
|
||
for (p = o->link_order_head;
|
||
p != (struct bfd_link_order *) NULL;
|
||
p = p->next)
|
||
{
|
||
asection *input_section;
|
||
|
||
if (p->type != bfd_indirect_link_order)
|
||
{
|
||
if (p->type == bfd_data_link_order)
|
||
continue;
|
||
abort ();
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
/* Skip this section later on (I don't think this
|
||
currently matters, but someday it might). */
|
||
o->link_order_head = (struct bfd_link_order *) NULL;
|
||
|
||
/* Really remove the section. */
|
||
for (secpp = &abfd->sections;
|
||
*secpp != o;
|
||
secpp = &(*secpp)->next)
|
||
;
|
||
bfd_section_list_remove (abfd, secpp);
|
||
--abfd->section_count;
|
||
|
||
continue;
|
||
}
|
||
|
||
/* There is one gptab for initialized data, and one for
|
||
uninitialized data. */
|
||
if (strcmp (o->name, ".gptab.sdata") == 0)
|
||
gptab_data_sec = o;
|
||
else if (strcmp (o->name, ".gptab.sbss") == 0)
|
||
gptab_bss_sec = o;
|
||
else
|
||
{
|
||
(*_bfd_error_handler)
|
||
(_("%s: illegal section name `%s'"),
|
||
bfd_archive_filename (abfd), o->name);
|
||
bfd_set_error (bfd_error_nonrepresentable_section);
|
||
return false;
|
||
}
|
||
|
||
/* The linker script always combines .gptab.data and
|
||
.gptab.sdata into .gptab.sdata, and likewise for
|
||
.gptab.bss and .gptab.sbss. It is possible that there is
|
||
no .sdata or .sbss section in the output file, in which
|
||
case we must change the name of the output section. */
|
||
subname = o->name + sizeof ".gptab" - 1;
|
||
if (bfd_get_section_by_name (abfd, subname) == NULL)
|
||
{
|
||
if (o == gptab_data_sec)
|
||
o->name = ".gptab.data";
|
||
else
|
||
o->name = ".gptab.bss";
|
||
subname = o->name + sizeof ".gptab" - 1;
|
||
BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL);
|
||
}
|
||
|
||
/* Set up the first entry. */
|
||
c = 1;
|
||
tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab));
|
||
if (tab == NULL)
|
||
return false;
|
||
tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd);
|
||
tab[0].gt_header.gt_unused = 0;
|
||
|
||
/* Combine the input sections. */
|
||
for (p = o->link_order_head;
|
||
p != (struct bfd_link_order *) NULL;
|
||
p = p->next)
|
||
{
|
||
asection *input_section;
|
||
bfd *input_bfd;
|
||
bfd_size_type size;
|
||
unsigned long last;
|
||
bfd_size_type gpentry;
|
||
|
||
if (p->type != bfd_indirect_link_order)
|
||
{
|
||
if (p->type == bfd_data_link_order)
|
||
continue;
|
||
abort ();
|
||
}
|
||
|
||
input_section = p->u.indirect.section;
|
||
input_bfd = input_section->owner;
|
||
|
||
/* Combine the gptab entries for this input section one
|
||
by one. We know that the input gptab entries are
|
||
sorted by ascending -G value. */
|
||
size = bfd_section_size (input_bfd, input_section);
|
||
last = 0;
|
||
for (gpentry = sizeof (Elf32_External_gptab);
|
||
gpentry < size;
|
||
gpentry += sizeof (Elf32_External_gptab))
|
||
{
|
||
Elf32_External_gptab ext_gptab;
|
||
Elf32_gptab int_gptab;
|
||
unsigned long val;
|
||
unsigned long add;
|
||
boolean exact;
|
||
unsigned int look;
|
||
|
||
if (! (bfd_get_section_contents
|
||
(input_bfd, input_section, (PTR) &ext_gptab,
|
||
gpentry, sizeof (Elf32_External_gptab))))
|
||
{
|
||
free (tab);
|
||
return false;
|
||
}
|
||
|
||
mips_elf64_swap_gptab_in (input_bfd, &ext_gptab,
|
||
&int_gptab);
|
||
val = int_gptab.gt_entry.gt_g_value;
|
||
add = int_gptab.gt_entry.gt_bytes - last;
|
||
|
||
exact = false;
|
||
for (look = 1; look < c; look++)
|
||
{
|
||
if (tab[look].gt_entry.gt_g_value >= val)
|
||
tab[look].gt_entry.gt_bytes += add;
|
||
|
||
if (tab[look].gt_entry.gt_g_value == val)
|
||
exact = true;
|
||
}
|
||
|
||
if (! exact)
|
||
{
|
||
Elf32_gptab *new_tab;
|
||
unsigned int max;
|
||
|
||
/* We need a new table entry. */
|
||
new_tab = ((Elf32_gptab *)
|
||
bfd_realloc ((PTR) tab,
|
||
(c + 1) * sizeof (Elf32_gptab)));
|
||
if (new_tab == NULL)
|
||
{
|
||
free (tab);
|
||
return false;
|
||
}
|
||
tab = new_tab;
|
||
tab[c].gt_entry.gt_g_value = val;
|
||
tab[c].gt_entry.gt_bytes = add;
|
||
|
||
/* Merge in the size for the next smallest -G
|
||
value, since that will be implied by this new
|
||
value. */
|
||
max = 0;
|
||
for (look = 1; look < c; look++)
|
||
{
|
||
if (tab[look].gt_entry.gt_g_value < val
|
||
&& (max == 0
|
||
|| (tab[look].gt_entry.gt_g_value
|
||
> tab[max].gt_entry.gt_g_value)))
|
||
max = look;
|
||
}
|
||
if (max != 0)
|
||
tab[c].gt_entry.gt_bytes +=
|
||
tab[max].gt_entry.gt_bytes;
|
||
|
||
++c;
|
||
}
|
||
|
||
last = int_gptab.gt_entry.gt_bytes;
|
||
}
|
||
|
||
/* Hack: reset the SEC_HAS_CONTENTS flag so that
|
||
elf_link_input_bfd ignores this section. */
|
||
input_section->flags &=~ SEC_HAS_CONTENTS;
|
||
}
|
||
|
||
/* The table must be sorted by -G value. */
|
||
if (c > 2)
|
||
qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare);
|
||
|
||
/* Swap out the table. */
|
||
ext_tab = ((Elf32_External_gptab *)
|
||
bfd_alloc (abfd, c * sizeof (Elf32_External_gptab)));
|
||
if (ext_tab == NULL)
|
||
{
|
||
free (tab);
|
||
return false;
|
||
}
|
||
|
||
for (i = 0; i < c; i++)
|
||
mips_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i);
|
||
free (tab);
|
||
|
||
o->_raw_size = c * sizeof (Elf32_External_gptab);
|
||
o->contents = (bfd_byte *) ext_tab;
|
||
|
||
/* Skip this section later on (I don't think this currently
|
||
matters, but someday it might). */
|
||
o->link_order_head = (struct bfd_link_order *) NULL;
|
||
}
|
||
}
|
||
|
||
/* Invoke the regular ELF backend linker to do all the work. */
|
||
if (!bfd_elf64_bfd_final_link (abfd, info))
|
||
return false;
|
||
|
||
/* Now write out the computed sections. */
|
||
if (mdebug_sec != (asection *) NULL)
|
||
{
|
||
BFD_ASSERT (abfd->output_has_begun);
|
||
if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug,
|
||
swap, info,
|
||
mdebug_sec->filepos))
|
||
return false;
|
||
|
||
bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info);
|
||
}
|
||
if (gptab_data_sec != (asection *) NULL)
|
||
{
|
||
if (! bfd_set_section_contents (abfd, gptab_data_sec,
|
||
gptab_data_sec->contents,
|
||
(file_ptr) 0,
|
||
gptab_data_sec->_raw_size))
|
||
return false;
|
||
}
|
||
|
||
if (gptab_bss_sec != (asection *) NULL)
|
||
{
|
||
if (! bfd_set_section_contents (abfd, gptab_bss_sec,
|
||
gptab_bss_sec->contents,
|
||
(file_ptr) 0,
|
||
gptab_bss_sec->_raw_size))
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* ECOFF swapping routines. These are used when dealing with the
|
||
.mdebug section, which is in the ECOFF debugging format. */
|
||
static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap =
|
||
{
|
||
/* Symbol table magic number. */
|
||
magicSym2,
|
||
/* Alignment of debugging information. E.g., 4. */
|
||
8,
|
||
/* Sizes of external symbolic information. */
|
||
sizeof (struct hdr_ext),
|
||
sizeof (struct dnr_ext),
|
||
sizeof (struct pdr_ext),
|
||
sizeof (struct sym_ext),
|
||
sizeof (struct opt_ext),
|
||
sizeof (struct fdr_ext),
|
||
sizeof (struct rfd_ext),
|
||
sizeof (struct ext_ext),
|
||
/* Functions to swap in external symbolic data. */
|
||
ecoff_swap_hdr_in,
|
||
ecoff_swap_dnr_in,
|
||
ecoff_swap_pdr_in,
|
||
ecoff_swap_sym_in,
|
||
ecoff_swap_opt_in,
|
||
ecoff_swap_fdr_in,
|
||
ecoff_swap_rfd_in,
|
||
ecoff_swap_ext_in,
|
||
_bfd_ecoff_swap_tir_in,
|
||
_bfd_ecoff_swap_rndx_in,
|
||
/* Functions to swap out external symbolic data. */
|
||
ecoff_swap_hdr_out,
|
||
ecoff_swap_dnr_out,
|
||
ecoff_swap_pdr_out,
|
||
ecoff_swap_sym_out,
|
||
ecoff_swap_opt_out,
|
||
ecoff_swap_fdr_out,
|
||
ecoff_swap_rfd_out,
|
||
ecoff_swap_ext_out,
|
||
_bfd_ecoff_swap_tir_out,
|
||
_bfd_ecoff_swap_rndx_out,
|
||
/* Function to read in symbolic data. */
|
||
_bfd_mips_elf_read_ecoff_info
|
||
};
|
||
|
||
/* Relocations in the 64 bit MIPS ELF ABI are more complex than in
|
||
standard ELF. This structure is used to redirect the relocation
|
||
handling routines. */
|
||
|
||
const struct elf_size_info mips_elf64_size_info =
|
||
{
|
||
sizeof (Elf64_External_Ehdr),
|
||
sizeof (Elf64_External_Phdr),
|
||
sizeof (Elf64_External_Shdr),
|
||
sizeof (Elf64_Mips_External_Rel),
|
||
sizeof (Elf64_Mips_External_Rela),
|
||
sizeof (Elf64_External_Sym),
|
||
sizeof (Elf64_External_Dyn),
|
||
sizeof (Elf_External_Note),
|
||
4, /* hash-table entry size */
|
||
3, /* internal relocations per external relocations */
|
||
64, /* arch_size */
|
||
8, /* file_align */
|
||
ELFCLASS64,
|
||
EV_CURRENT,
|
||
bfd_elf64_write_out_phdrs,
|
||
bfd_elf64_write_shdrs_and_ehdr,
|
||
mips_elf64_write_relocs,
|
||
bfd_elf64_swap_symbol_out,
|
||
mips_elf64_slurp_reloc_table,
|
||
bfd_elf64_slurp_symbol_table,
|
||
bfd_elf64_swap_dyn_in,
|
||
bfd_elf64_swap_dyn_out,
|
||
mips_elf64_be_swap_reloc_in,
|
||
mips_elf64_be_swap_reloc_out,
|
||
mips_elf64_be_swap_reloca_in,
|
||
mips_elf64_be_swap_reloca_out
|
||
};
|
||
|
||
#define ELF_ARCH bfd_arch_mips
|
||
#define ELF_MACHINE_CODE EM_MIPS
|
||
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
|
||
#define elf_backend_collect true
|
||
#define elf_backend_type_change_ok true
|
||
#define elf_backend_can_gc_sections true
|
||
#define elf_info_to_howto mips_elf64_info_to_howto_rela
|
||
#define elf_info_to_howto_rel mips_elf64_info_to_howto_rel
|
||
#define elf_backend_object_p _bfd_mips_elf_object_p
|
||
#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
|
||
#define elf_backend_section_processing _bfd_mips_elf_section_processing
|
||
#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
|
||
#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
|
||
#define elf_backend_section_from_bfd_section \
|
||
_bfd_mips_elf_section_from_bfd_section
|
||
#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
|
||
#define elf_backend_link_output_symbol_hook \
|
||
_bfd_mips_elf_link_output_symbol_hook
|
||
#define elf_backend_create_dynamic_sections \
|
||
mips_elf64_create_dynamic_sections
|
||
#define elf_backend_check_relocs mips_elf64_check_relocs
|
||
#define elf_backend_adjust_dynamic_symbol \
|
||
mips_elf64_adjust_dynamic_symbol
|
||
#define elf_backend_always_size_sections \
|
||
mips_elf64_always_size_sections
|
||
#define elf_backend_size_dynamic_sections \
|
||
mips_elf64_size_dynamic_sections
|
||
#define elf_backend_relocate_section mips_elf64_relocate_section
|
||
#define elf_backend_finish_dynamic_symbol \
|
||
mips_elf64_finish_dynamic_symbol
|
||
#define elf_backend_finish_dynamic_sections \
|
||
mips_elf64_finish_dynamic_sections
|
||
#define elf_backend_final_write_processing \
|
||
_bfd_mips_elf_final_write_processing
|
||
#define elf_backend_additional_program_headers \
|
||
mips_elf64_additional_program_headers
|
||
#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
|
||
#define elf_backend_gc_mark_hook mips_elf64_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook mips_elf64_gc_sweep_hook
|
||
#define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap
|
||
#define elf_backend_size_info mips_elf64_size_info
|
||
|
||
#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
|
||
#define elf_backend_plt_header_size 0
|
||
|
||
/* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations
|
||
* work better/work only in RELA, so we default to this. */
|
||
#define elf_backend_may_use_rel_p 1
|
||
#define elf_backend_may_use_rela_p 1
|
||
#define elf_backend_default_use_rela_p 1
|
||
|
||
/* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
|
||
MIPS-specific function only applies to IRIX5, which had no 64-bit
|
||
ABI. */
|
||
#define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line
|
||
#define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents
|
||
#define bfd_elf64_bfd_link_hash_table_create \
|
||
mips_elf64_link_hash_table_create
|
||
#define bfd_elf64_bfd_final_link mips_elf64_final_link
|
||
#define bfd_elf64_bfd_merge_private_bfd_data \
|
||
_bfd_mips_elf_merge_private_bfd_data
|
||
#define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags
|
||
#define bfd_elf64_bfd_print_private_bfd_data \
|
||
_bfd_mips_elf_print_private_bfd_data
|
||
|
||
#define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound
|
||
#define bfd_elf64_bfd_reloc_type_lookup mips_elf64_reloc_type_lookup
|
||
#define bfd_elf64_archive_functions
|
||
extern boolean bfd_elf64_archive_slurp_armap
|
||
PARAMS((bfd *));
|
||
extern boolean bfd_elf64_archive_write_armap
|
||
PARAMS((bfd *, unsigned int, struct orl *, unsigned int, int));
|
||
#define bfd_elf64_archive_slurp_extended_name_table \
|
||
_bfd_archive_coff_slurp_extended_name_table
|
||
#define bfd_elf64_archive_construct_extended_name_table \
|
||
_bfd_archive_coff_construct_extended_name_table
|
||
#define bfd_elf64_archive_truncate_arname \
|
||
_bfd_archive_coff_truncate_arname
|
||
#define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
|
||
#define bfd_elf64_archive_openr_next_archived_file \
|
||
_bfd_archive_coff_openr_next_archived_file
|
||
#define bfd_elf64_archive_get_elt_at_index \
|
||
_bfd_archive_coff_get_elt_at_index
|
||
#define bfd_elf64_archive_generic_stat_arch_elt \
|
||
_bfd_archive_coff_generic_stat_arch_elt
|
||
#define bfd_elf64_archive_update_armap_timestamp \
|
||
_bfd_archive_coff_update_armap_timestamp
|
||
|
||
/* The SGI style (n)64 NewABI. */
|
||
#define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf64-littlemips"
|
||
#define TARGET_BIG_SYM bfd_elf64_bigmips_vec
|
||
#define TARGET_BIG_NAME "elf64-bigmips"
|
||
|
||
#include "elf64-target.h"
|
||
|
||
#define INCLUDED_TARGET_FILE /* More a type of flag. */
|
||
|
||
/* The SYSV-style 'traditional' (n)64 NewABI. */
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef TARGET_BIG_SYM
|
||
#undef TARGET_BIG_NAME
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec
|
||
#define TARGET_LITTLE_NAME "elf64-tradlittlemips"
|
||
#define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec
|
||
#define TARGET_BIG_NAME "elf64-tradbigmips"
|
||
|
||
/* Include the target file again for this target. */
|
||
#include "elf64-target.h"
|