mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
4da816844a
underscore on symbols. Make sure to only link same kind. * elf32-cris.c (cris_elf_object_p, cris_elf_final_write_processing, cris_elf_print_private_bfd_data, cris_elf_merge_private_bfd_data): New. (elf_backend_object_p, elf_backend_final_write_processing, bfd_elf32_bfd_print_private_bfd_data, bfd_elf32_bfd_merge_private_bfd_data): Define. <Target vector definition>: Include elf32-target.h twice with different macro settings: (TARGET_LITTLE_SYM): First as bfd_elf32_cris_vec, then as bfd_elf32_us_cris_vec. (TARGET_LITTLE_NAME): First as "elf32-cris", then "elf32-us-cris". (elf_symbol_leading_char): First as 0, then '_'. (INCLUDED_TARGET_FILE): Define for second include of elf32-target.h. * config.bfd (cris-*-*): Add bfd_elf32_us_cris_vec to targ_selvecs. * configure.in (bfd_elf32_cris_vec, cris_aout_vec): New vector. * configure: Regenerate. * targets.c: Declare bfd_elf32_us_cris_vec. * po/bfd.pot: Regenerate.
713 lines
20 KiB
C
713 lines
20 KiB
C
/* CRIS-specific support for 32-bit ELF.
|
||
Copyright (C) 2000 Free Software Foundation, Inc.
|
||
Contributed by Axis Communications AB.
|
||
Written by Hans-Peter Nilsson, based on elf32-fr30.c
|
||
|
||
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. */
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
#include "elf-bfd.h"
|
||
#include "elf/cris.h"
|
||
|
||
/* Forward declarations. */
|
||
static reloc_howto_type * cris_reloc_type_lookup
|
||
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
|
||
|
||
static void cris_info_to_howto_rela
|
||
PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
|
||
|
||
static boolean cris_elf_relocate_section
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
||
|
||
static bfd_reloc_status_type cris_final_link_relocate
|
||
PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, bfd_vma));
|
||
|
||
static boolean cris_elf_gc_sweep_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
|
||
static asection * cris_elf_gc_mark_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
||
|
||
static boolean cris_elf_object_p PARAMS ((bfd *));
|
||
|
||
static void cris_elf_final_write_processing PARAMS ((bfd *, boolean));
|
||
|
||
static boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
|
||
|
||
static boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
|
||
|
||
static reloc_howto_type cris_elf_howto_table [] =
|
||
{
|
||
/* This reloc does nothing. */
|
||
HOWTO (R_CRIS_NONE, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_NONE", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 8 bit absolute relocation. */
|
||
HOWTO (R_CRIS_8, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_8", /* name */
|
||
false, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x00ff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 16 bit absolute relocation. */
|
||
HOWTO (R_CRIS_16, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_16", /* name */
|
||
false, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_CRIS_32, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_32", /* name */
|
||
false, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* An 8 bit absolute relocation. */
|
||
HOWTO (R_CRIS_8_PCREL, /* type */
|
||
0, /* rightshift */
|
||
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_8_PCREL", /* name */
|
||
false, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x00ff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 16 bit absolute relocation. */
|
||
HOWTO (R_CRIS_16_PCREL, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
16, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_16", /* name */
|
||
false, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0x0000ffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_CRIS_32_PCREL, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
true, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_CRIS_32", /* name */
|
||
false, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable hierarchy */
|
||
HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
NULL, /* special_function */
|
||
"R_CRIS_GNU_VTINHERIT", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
/* GNU extension to record C++ vtable member usage */
|
||
HOWTO (R_CRIS_GNU_VTENTRY, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
0, /* bitsize */
|
||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
||
"R_CRIS_GNU_VTENTRY", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
false) /* pcrel_offset */
|
||
};
|
||
|
||
/* Map BFD reloc types to CRIS ELF reloc types. */
|
||
|
||
struct cris_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
unsigned int cris_reloc_val;
|
||
};
|
||
|
||
static const struct cris_reloc_map cris_reloc_map [] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_CRIS_NONE },
|
||
{ BFD_RELOC_8, R_CRIS_8 },
|
||
{ BFD_RELOC_16, R_CRIS_16 },
|
||
{ BFD_RELOC_32, R_CRIS_32 },
|
||
{ BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
|
||
{ BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
|
||
{ BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }
|
||
};
|
||
|
||
static reloc_howto_type *
|
||
cris_reloc_type_lookup (abfd, code)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]);
|
||
--i;)
|
||
if (cris_reloc_map [i].bfd_reloc_val == code)
|
||
return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Set the howto pointer for an CRIS ELF reloc. */
|
||
|
||
static void
|
||
cris_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
arelent * cache_ptr;
|
||
Elf32_Internal_Rela * dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
|
||
cache_ptr->howto = & cris_elf_howto_table [r_type];
|
||
}
|
||
|
||
/* Perform a single relocation. By default we use the standard BFD
|
||
routines, but we might have to do a few relocs ourselves in the future. */
|
||
|
||
static bfd_reloc_status_type
|
||
cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
|
||
relocation)
|
||
reloc_howto_type * howto;
|
||
bfd * input_bfd;
|
||
asection * input_section;
|
||
bfd_byte * contents;
|
||
Elf_Internal_Rela * rel;
|
||
bfd_vma relocation;
|
||
{
|
||
bfd_reloc_status_type r
|
||
= _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
return r;
|
||
}
|
||
|
||
/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
|
||
copied, for further comments. */
|
||
|
||
static boolean
|
||
cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
bfd * output_bfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info * info;
|
||
bfd * input_bfd;
|
||
asection * input_section;
|
||
bfd_byte * contents;
|
||
Elf_Internal_Rela * relocs;
|
||
Elf_Internal_Sym * local_syms;
|
||
asection ** local_sections;
|
||
{
|
||
Elf_Internal_Shdr * symtab_hdr;
|
||
struct elf_link_hash_entry ** sym_hashes;
|
||
Elf_Internal_Rela * rel;
|
||
Elf_Internal_Rela * relend;
|
||
|
||
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
relend = relocs + input_section->reloc_count;
|
||
|
||
/* It seems this can happen with erroneous or unsupported input (mixing
|
||
a.out and elf in an archive, for example.) */
|
||
if (sym_hashes == NULL)
|
||
return false;
|
||
|
||
for (rel = relocs; rel < relend; rel ++)
|
||
{
|
||
reloc_howto_type * howto;
|
||
unsigned long r_symndx;
|
||
Elf_Internal_Sym * sym;
|
||
asection * sec;
|
||
struct elf_link_hash_entry * h;
|
||
bfd_vma relocation;
|
||
bfd_reloc_status_type r;
|
||
const char * name = NULL;
|
||
int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
if ( r_type == R_CRIS_GNU_VTINHERIT
|
||
|| r_type == R_CRIS_GNU_VTENTRY)
|
||
continue;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
if (info->relocateable)
|
||
{
|
||
/* This is a relocateable link. We don't have to change
|
||
anything, unless the reloc is against a section symbol,
|
||
in which case we have to adjust according to where the
|
||
section symbol winds up in the output section. */
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
|
||
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
||
{
|
||
sec = local_sections [r_symndx];
|
||
rel->r_addend += sec->output_offset + sym->st_value;
|
||
}
|
||
}
|
||
|
||
continue;
|
||
}
|
||
|
||
/* This is a final link. */
|
||
howto = cris_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections [r_symndx];
|
||
relocation = (sec->output_section->vma
|
||
+ sec->output_offset
|
||
+ sym->st_value);
|
||
|
||
name = bfd_elf_string_from_elf_section
|
||
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
||
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
||
#if 0
|
||
fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
|
||
sec->name, name, sym->st_name,
|
||
sec->output_section->vma, sec->output_offset,
|
||
sym->st_value, rel->r_addend);
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
name = h->root.root.string;
|
||
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sec = h->root.u.def.section;
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
#if 0
|
||
fprintf (stderr,
|
||
"defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
|
||
sec->name, name, h->root.u.def.value,
|
||
sec->output_section->vma, sec->output_offset, relocation);
|
||
#endif
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
{
|
||
#if 0
|
||
fprintf (stderr, "undefined: sec: %s, name: %s\n",
|
||
sec->name, name);
|
||
#endif
|
||
relocation = 0;
|
||
}
|
||
else if (info->shared
|
||
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
||
relocation = 0;
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset, true)))
|
||
return false;
|
||
#if 0
|
||
fprintf (stderr, "unknown: name: %s\n", name);
|
||
#endif
|
||
relocation = 0;
|
||
}
|
||
}
|
||
|
||
r = cris_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel, relocation);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
const char * msg = (const char *) NULL;
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_overflow:
|
||
r = info->callbacks->reloc_overflow
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset);
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
r = info->callbacks->undefined_symbol
|
||
(info, name, input_bfd, input_section, rel->r_offset,
|
||
true);
|
||
break;
|
||
|
||
case bfd_reloc_outofrange:
|
||
msg = _("internal error: out of range error");
|
||
break;
|
||
|
||
case bfd_reloc_notsupported:
|
||
msg = _("internal error: unsupported relocation error");
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
msg = _("internal error: dangerous relocation");
|
||
break;
|
||
|
||
default:
|
||
msg = _("internal error: unknown error");
|
||
break;
|
||
}
|
||
|
||
if (msg)
|
||
r = info->callbacks->warning
|
||
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
||
|
||
if (! r)
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
cris_elf_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 (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_CRIS_GNU_VTINHERIT:
|
||
case R_CRIS_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
|
||
{
|
||
if (!(elf_bad_symtab (abfd)
|
||
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
|
||
&& ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
|
||
&& sym->st_shndx != SHN_COMMON))
|
||
{
|
||
return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
||
}
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
static boolean
|
||
cris_elf_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;
|
||
{
|
||
return true;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase.
|
||
Since we don't do .gots or .plts, we just need to consider the
|
||
virtual table relocs for gc. */
|
||
|
||
static boolean
|
||
cris_elf_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
|
||
if (info->relocateable)
|
||
return true;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
|
||
if (!elf_bad_symtab (abfd))
|
||
sym_hashes_end -= symtab_hdr->sh_info;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_CRIS_GNU_VTINHERIT:
|
||
if (!_bfd_elf32_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_CRIS_GNU_VTENTRY:
|
||
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return false;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Reject a file depending on underscores on symbols. */
|
||
|
||
static boolean
|
||
cris_elf_object_p (abfd)
|
||
bfd *abfd;
|
||
{
|
||
if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
|
||
return (bfd_get_symbol_leading_char (abfd) == '_');
|
||
else
|
||
return (bfd_get_symbol_leading_char (abfd) == 0);
|
||
}
|
||
|
||
/* Mark presence or absence of leading underscore. */
|
||
|
||
static void
|
||
cris_elf_final_write_processing (abfd, linker)
|
||
bfd *abfd;
|
||
boolean linker ATTRIBUTE_UNUSED;
|
||
{
|
||
if (bfd_get_symbol_leading_char (abfd) == '_')
|
||
elf_elfheader (abfd)->e_flags |= EF_CRIS_UNDERSCORE;
|
||
else
|
||
elf_elfheader (abfd)->e_flags &= ~EF_CRIS_UNDERSCORE;
|
||
}
|
||
|
||
/* Display the flags field. */
|
||
|
||
static boolean
|
||
cris_elf_print_private_bfd_data (abfd, ptr)
|
||
bfd *abfd;
|
||
PTR ptr;
|
||
{
|
||
FILE *file = (FILE *) ptr;
|
||
|
||
BFD_ASSERT (abfd != NULL && ptr != NULL)
|
||
|
||
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
||
|
||
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
||
|
||
if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
|
||
fprintf (file, _(" [symbols have a _ prefix]"));
|
||
|
||
fputc ('\n', file);
|
||
return true;
|
||
}
|
||
|
||
/* Don't mix files with and without a leading underscore. */
|
||
|
||
static boolean
|
||
cris_elf_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
flagword old_flags, new_flags;
|
||
|
||
if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
|
||
return false;
|
||
|
||
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return true;
|
||
|
||
if (! elf_flags_init (obfd))
|
||
{
|
||
/* This happens when ld starts out with a 'blank' output file. */
|
||
elf_flags_init (obfd) = true;
|
||
|
||
/* Set flags according to current bfd_target. */
|
||
cris_elf_final_write_processing (obfd, false);
|
||
}
|
||
|
||
old_flags = elf_elfheader (obfd)->e_flags;
|
||
new_flags = elf_elfheader (ibfd)->e_flags;
|
||
|
||
/* Is this good or bad? We'll follow with other excluding flags. */
|
||
if ((old_flags & EF_CRIS_UNDERSCORE) != (new_flags & EF_CRIS_UNDERSCORE))
|
||
{
|
||
(*_bfd_error_handler)
|
||
((new_flags & EF_CRIS_UNDERSCORE)
|
||
? _("%s: uses _-prefixed symbols, but writing file with non-prefixed symbols")
|
||
: _("%s: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
|
||
bfd_get_filename (ibfd));
|
||
bfd_set_error (bfd_error_bad_value);
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
#define ELF_ARCH bfd_arch_cris
|
||
#define ELF_MACHINE_CODE EM_CRIS
|
||
#define ELF_MAXPAGESIZE 0x2000
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_cris_vec
|
||
#define TARGET_LITTLE_NAME "elf32-cris"
|
||
#define elf_symbol_leading_char 0
|
||
|
||
#define elf_info_to_howto_rel NULL
|
||
#define elf_info_to_howto cris_info_to_howto_rela
|
||
#define elf_backend_relocate_section cris_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
|
||
#define elf_backend_check_relocs cris_elf_check_relocs
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
|
||
#define elf_backend_object_p cris_elf_object_p
|
||
#define elf_backend_final_write_processing \
|
||
cris_elf_final_write_processing
|
||
#define bfd_elf32_bfd_print_private_bfd_data \
|
||
cris_elf_print_private_bfd_data
|
||
#define bfd_elf32_bfd_merge_private_bfd_data \
|
||
cris_elf_merge_private_bfd_data
|
||
|
||
#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
|
||
|
||
/* Later, we my want to optimize RELA entries into REL entries for dynamic
|
||
linking and libraries (if it's a win of any significance). Until then,
|
||
take the easy route. */
|
||
#define elf_backend_may_use_rel_p 0
|
||
#define elf_backend_may_use_rela_p 1
|
||
|
||
#include "elf32-target.h"
|
||
|
||
#define INCLUDED_TARGET_FILE
|
||
|
||
#undef TARGET_LITTLE_SYM
|
||
#undef TARGET_LITTLE_NAME
|
||
#undef elf_symbol_leading_char
|
||
|
||
#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
|
||
#define TARGET_LITTLE_NAME "elf32-us-cris"
|
||
#define elf_symbol_leading_char '_'
|
||
|
||
#include "elf32-target.h"
|