/* Intel 80386/80486-specific support for 32-bit ELF
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1993-2014 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf-nacl.h"
#include "elf-vxworks.h"
#include "bfd_stdint.h"
#include "objalloc.h"
HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
- EMPTY_HOWTO (38),
+ HOWTO(R_386_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
+ bfd_elf_generic_reloc, "R_386_SIZE32",
+ TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
TRUE, 0xffffffff, 0xffffffff, FALSE),
TRACE ("BFD_RELOC_386_TLS_TPOFF32");
return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
+ case BFD_RELOC_SIZE32:
+ TRACE ("BFD_RELOC_SIZE32");
+ return &elf_howto_table[R_386_SIZE32 - R_386_tls_offset];
+
case BFD_RELOC_386_TLS_GOTDESC:
TRACE ("BFD_RELOC_386_TLS_GOTDESC");
return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
abfd, (int) r_type);
indx = R_386_NONE;
}
- BFD_ASSERT (elf_howto_table [indx].type == r_type);
+ /* PR 17512: file: 0f67f69d. */
+ if (elf_howto_table [indx].type != r_type)
+ return NULL;
return &elf_howto_table[indx];
}
return FALSE;
/* pr_cursig */
- elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
+ elf_tdata (abfd)->core->signal = bfd_get_32 (abfd, note->descdata + 20);
/* pr_pid */
- elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
+ elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 28;
case 144: /* Linux/i386 */
/* pr_cursig */
- elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+ elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
- elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
+ elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
if (pr_version != 1)
return FALSE;
- elf_tdata (abfd)->core_program
+ elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
- elf_tdata (abfd)->core_command
+ elf_tdata (abfd)->core->command
= _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
}
else
return FALSE;
case 124: /* Linux/i386 elf_prpsinfo. */
- elf_tdata (abfd)->core_pid
+ elf_tdata (abfd)->core->pid
= bfd_get_32 (abfd, note->descdata + 12);
- elf_tdata (abfd)->core_program
+ elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
- elf_tdata (abfd)->core_command
+ elf_tdata (abfd)->core->command
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
}
}
onto the end of the args in some (at least one anyway)
implementations, so strip it off if it exists. */
{
- char *command = elf_tdata (abfd)->core_command;
+ char *command = elf_tdata (abfd)->core->command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
0, 0, 0, 0 /* replaced with offset to start of .plt. */
};
+/* Entries in the GOT procedure linkage table look like this. */
+
+static const bfd_byte elf_i386_got_plt_entry[8] =
+{
+ 0xff, 0x25, /* jmp indirect */
+ 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
+ 0x66, 0x90 /* xchg %ax,%ax */
+};
+
+/* Entries in the PIC GOT procedure linkage table look like this. */
+
+static const bfd_byte elf_i386_pic_got_plt_entry[8] =
+{
+ 0xff, 0xa3, /* jmp *offset(%ebx) */
+ 0, 0, 0, 0, /* replaced with offset of this symbol in .got. */
+ 0x66, 0x90 /* xchg %ax,%ax */
+};
+
/* .eh_frame covering the .plt section. */
static const bfd_byte elf_i386_eh_frame_plt[] =
(GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
unsigned char tls_type;
+ /* Information about the GOT PLT entry. Filled when there are both
+ GOT and PLT relocations against the same function. */
+ union gotplt_union plt_got;
+
/* Offset of the GOTPLT entry reserved for the TLS descriptor,
starting at the end of the jump table. */
bfd_vma tlsdesc_got;
asection *sdynbss;
asection *srelbss;
asection *plt_eh_frame;
+ asection *plt_got;
union
{
== I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
#define elf_i386_compute_jump_table_size(htab) \
- ((htab)->next_tls_desc_index * 4)
+ ((htab)->elf.srelplt->reloc_count * 4)
/* Create an entry in an i386 ELF linker hash table. */
eh = (struct elf_i386_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
+ eh->plt_got.offset = (bfd_vma) -1;
eh->tlsdesc_got = (bfd_vma) -1;
}
ret->elf.indx = sec->id;
ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
ret->elf.dynindx = -1;
+ ret->plt_got.offset = (bfd_vma) -1;
*slot = ret;
}
return &ret->elf;
}
+/* Destroy an i386 ELF linker hash table. */
+
+static void
+elf_i386_link_hash_table_free (bfd *obfd)
+{
+ struct elf_i386_link_hash_table *htab
+ = (struct elf_i386_link_hash_table *) obfd->link.hash;
+
+ if (htab->loc_hash_table)
+ htab_delete (htab->loc_hash_table);
+ if (htab->loc_hash_memory)
+ objalloc_free ((struct objalloc *) htab->loc_hash_memory);
+ _bfd_elf_link_hash_table_free (obfd);
+}
+
/* Create an i386 ELF linker hash table. */
static struct bfd_link_hash_table *
struct elf_i386_link_hash_table *ret;
bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
- ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
+ ret = (struct elf_i386_link_hash_table *) bfd_zmalloc (amt);
if (ret == NULL)
return NULL;
return NULL;
}
- ret->sdynbss = NULL;
- ret->srelbss = NULL;
- ret->plt_eh_frame = NULL;
- ret->tls_ldm_got.refcount = 0;
- ret->next_tls_desc_index = 0;
- ret->sgotplt_jump_table_size = 0;
- ret->sym_cache.abfd = NULL;
- ret->srelplt2 = NULL;
- ret->tls_module_base = NULL;
- ret->next_jump_slot_index = 0;
- ret->next_irelative_index = 0;
-
ret->loc_hash_table = htab_try_create (1024,
elf_i386_local_htab_hash,
elf_i386_local_htab_eq,
ret->loc_hash_memory = objalloc_create ();
if (!ret->loc_hash_table || !ret->loc_hash_memory)
{
- free (ret);
+ elf_i386_link_hash_table_free (abfd);
return NULL;
}
+ ret->elf.root.hash_table_free = elf_i386_link_hash_table_free;
return &ret->elf.root;
}
-/* Destroy an i386 ELF linker hash table. */
-
-static void
-elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
-{
- struct elf_i386_link_hash_table *htab
- = (struct elf_i386_link_hash_table *) hash;
-
- if (htab->loc_hash_table)
- htab_delete (htab->loc_hash_table);
- if (htab->loc_hash_memory)
- objalloc_free ((struct objalloc *) htab->loc_hash_memory);
- _bfd_generic_link_hash_table_free (hash);
-}
-
/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
.rel.bss sections in DYNOBJ, and set up shortcuts to them in our
hash table. */
if (htab == NULL)
return FALSE;
- htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
+ htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
if (!info->shared)
- htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
+ htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
if (!htab->sdynbss
|| (!info->shared && !htab->srelbss))
return FALSE;
if (!info->no_ld_generated_unwind_info
- && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL
+ && htab->plt_eh_frame == NULL
&& htab->elf.splt != NULL)
{
- flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
+ flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
htab->plt_eh_frame
- = bfd_make_section_with_flags (dynobj, ".eh_frame",
- flags | SEC_READONLY);
+ = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
if (htab->plt_eh_frame == NULL
|| !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 2))
return FALSE;
-
- htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
- htab->plt_eh_frame->contents
- = bfd_alloc (dynobj, htab->plt_eh_frame->size);
- memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
- sizeof (elf_i386_eh_frame_plt));
}
return TRUE;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
+ bfd_boolean use_plt_got;
if (info->relocatable)
return TRUE;
if (htab == NULL)
return FALSE;
+ use_plt_got = (!get_elf_i386_backend_data (abfd)->is_vxworks
+ && (get_elf_i386_backend_data (abfd)
+ == &elf_i386_arch_bed));
+
symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
struct elf_link_hash_entry *h;
Elf_Internal_Sym *isym;
const char *name;
+ bfd_boolean size_reloc;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
break;
}
- /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
- it here if it is defined in a non-shared object. */
- if (h->type == STT_GNU_IFUNC
- && h->def_regular)
- {
- /* It is referenced by a non-shared object. */
- h->ref_regular = 1;
- h->needs_plt = 1;
-
- /* STT_GNU_IFUNC symbol must go through PLT. */
- h->plt.refcount += 1;
-
- /* STT_GNU_IFUNC needs dynamic sections. */
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
-
- switch (r_type)
- {
- default:
- if (h->root.root.string)
- name = h->root.root.string;
- else
- name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
- NULL);
- (*_bfd_error_handler)
- (_("%B: relocation %s against STT_GNU_IFUNC "
- "symbol `%s' isn't handled by %s"), abfd,
- elf_howto_table[r_type].name,
- name, __FUNCTION__);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
-
- case R_386_32:
- h->non_got_ref = 1;
- h->pointer_equality_needed = 1;
- if (info->shared)
- {
- /* We must copy these reloc types into the
- output file. Create a reloc section in
- dynobj and make room for this reloc. */
- sreloc = _bfd_elf_create_ifunc_dyn_reloc
- (abfd, info, sec, sreloc,
- &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
- if (sreloc == NULL)
- return FALSE;
- }
- break;
-
- case R_386_PC32:
- h->non_got_ref = 1;
- break;
-
- case R_386_PLT32:
- break;
-
- case R_386_GOT32:
- case R_386_GOTOFF:
- h->got.refcount += 1;
- if (htab->elf.sgot == NULL
- && !_bfd_elf_create_got_section (htab->elf.dynobj,
- info))
- return FALSE;
- break;
- }
-
- continue;
- }
+ /* It is referenced by a non-shared object. */
+ h->ref_regular = 1;
+ h->root.non_ir_ref = 1;
}
if (! elf_i386_tls_transition (info, abfd, sec, NULL,
h->plt.refcount += 1;
break;
+ case R_386_SIZE32:
+ size_reloc = TRUE;
+ goto do_size;
+
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
(_("%B: `%s' accessed both as normal and "
"thread local symbol"),
abfd, name);
+ bfd_set_error (bfd_error_bad_value);
return FALSE;
}
}
h->pointer_equality_needed = 1;
}
+ size_reloc = FALSE;
+do_size:
/* If we are creating a shared library, and this is a reloc
against a global symbol, or a non PC relative reloc
against a local symbol, then we need to copy the reloc
}
p->count += 1;
- if (r_type == R_386_PC32)
+ /* Count size relocation as PC-relative relocation. */
+ if (r_type == R_386_PC32 || size_reloc)
p->pc_count += 1;
}
break;
default:
break;
}
+
+ if (use_plt_got
+ && h != NULL
+ && h->plt.refcount > 0
+ && h->got.refcount > 0
+ && htab->plt_got == NULL)
+ {
+ /* Create the GOT procedure linkage table. */
+ unsigned int plt_got_align;
+ const struct elf_backend_data *bed;
+
+ bed = get_elf_backend_data (info->output_bfd);
+ BFD_ASSERT (sizeof (elf_i386_got_plt_entry) == 8
+ && (sizeof (elf_i386_got_plt_entry)
+ == sizeof (elf_i386_pic_got_plt_entry)));
+ plt_got_align = 3;
+
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ htab->plt_got
+ = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
+ ".plt.got",
+ (bed->dynamic_sec_flags
+ | SEC_ALLOC
+ | SEC_CODE
+ | SEC_LOAD
+ | SEC_READONLY));
+ if (htab->plt_got == NULL
+ || !bfd_set_section_alignment (htab->elf.dynobj,
+ htab->plt_got,
+ plt_got_align))
+ return FALSE;
+ }
}
return TRUE;
case R_386_32:
case R_386_PC32:
+ case R_386_SIZE32:
if (info->shared
&& (h == NULL || h->type != STT_GNU_IFUNC))
break;
{
struct elf_i386_link_hash_table *htab;
asection *s;
+ struct elf_i386_link_hash_entry *eh;
+ struct elf_dyn_relocs *p;
/* STT_GNU_IFUNC symbol must go through PLT. */
if (h->type == STT_GNU_IFUNC)
{
+ /* All local STT_GNU_IFUNC references must be treate as local
+ calls via local PLT. */
+ if (h->ref_regular
+ && SYMBOL_CALLS_LOCAL (info, h))
+ {
+ bfd_size_type pc_count = 0, count = 0;
+ struct elf_dyn_relocs **pp;
+
+ eh = (struct elf_i386_link_hash_entry *) h;
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ {
+ pc_count += p->pc_count;
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ count += p->count;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+
+ if (pc_count || count)
+ {
+ h->needs_plt = 1;
+ h->non_got_ref = 1;
+ if (h->plt.refcount <= 0)
+ h->plt.refcount = 1;
+ else
+ h->plt.refcount += 1;
+ }
+ }
+
if (h->plt.refcount <= 0)
{
h->plt.offset = (bfd_vma) -1;
if (ELIMINATE_COPY_RELOCS
&& !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
{
- struct elf_i386_link_hash_entry * eh;
- struct elf_dyn_relocs *p;
-
eh = (struct elf_i386_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
}
}
- if (h->size == 0)
- {
- (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
- h->root.root.string);
- return TRUE;
- }
-
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
/* We must generate a R_386_COPY reloc to tell the dynamic linker to
copy the initial value out of the dynamic object and into the
runtime process image. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
{
htab->srelbss->size += sizeof (Elf32_External_Rel);
h->needs_copy = 1;
plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ /* We can't use the GOT PLT if pointer equality is needed since
+ finish_dynamic_symbol won't clear symbol value and the dynamic
+ linker won't update the GOT slot. We will get into an infinite
+ loop at run-time. */
+ if (htab->plt_got != NULL
+ && h->type != STT_GNU_IFUNC
+ && !h->pointer_equality_needed
+ && h->plt.refcount > 0
+ && h->got.refcount > 0)
+ {
+ /* Don't use the regular PLT if there are both GOT and GOTPLT
+ reloctions. */
+ h->plt.offset = (bfd_vma) -1;
+
+ /* Use the GOT PLT. */
+ eh->plt_got.refcount = 1;
+ }
+
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
here if it is defined and referenced in a non-shared object. */
if (h->type == STT_GNU_IFUNC
&& h->def_regular)
return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
- plt_entry_size, 4);
+ plt_entry_size,
+ plt_entry_size, 4);
else if (htab->elf.dynamic_sections_created
- && h->plt.refcount > 0)
+ && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
{
+ bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
+
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->elf.splt;
+ asection *got_s = htab->plt_got;
/* If this is the first .plt entry, make room for the special
first entry. */
if (s->size == 0)
- s->size += plt_entry_size;
+ s->size = plt_entry_size;
- h->plt.offset = s->size;
+ if (use_plt_got)
+ eh->plt_got.offset = got_s->size;
+ else
+ h->plt.offset = s->size;
/* If this symbol is not defined in a regular file, and we are
not generating a shared library, then set the symbol to this
if (! info->shared
&& !h->def_regular)
{
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
+ if (use_plt_got)
+ {
+ /* We need to make a call to the entry of the GOT PLT
+ instead of regular PLT entry. */
+ h->root.u.def.section = got_s;
+ h->root.u.def.value = eh->plt_got.offset;
+ }
+ else
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+ }
}
/* Make room for this entry. */
- s->size += plt_entry_size;
+ if (use_plt_got)
+ got_s->size += sizeof (elf_i386_got_plt_entry);
+ else
+ {
+ s->size += plt_entry_size;
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
- htab->elf.sgotplt->size += 4;
+ /* We also need to make an entry in the .got.plt section,
+ which will be placed in the .got section by the linker
+ script. */
+ htab->elf.sgotplt->size += 4;
- /* We also need to make an entry in the .rel.plt section. */
- htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
- htab->elf.srelplt->reloc_count++;
+ /* We also need to make an entry in the .rel.plt section. */
+ htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
+ htab->elf.srelplt->reloc_count++;
+ }
if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
&& !info->shared)
return TRUE;
}
+/* Convert
+ mov foo@GOT(%reg), %reg
+ to
+ lea foo@GOTOFF(%reg), %reg
+ with the local symbol, foo. */
+
+static bfd_boolean
+elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *internal_relocs;
+ Elf_Internal_Rela *irel, *irelend;
+ bfd_byte *contents;
+ struct elf_i386_link_hash_table *htab;
+ bfd_boolean changed_contents;
+ bfd_boolean changed_relocs;
+ bfd_signed_vma *local_got_refcounts;
+
+ /* Don't even try to convert non-ELF outputs. */
+ if (!is_elf_hash_table (link_info->hash))
+ return FALSE;
+
+ /* Nothing to do if there are no codes, no relocations or no output. */
+ if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
+ || sec->reloc_count == 0
+ || bfd_is_abs_section (sec->output_section))
+ return TRUE;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* Load the relocations for this section. */
+ internal_relocs = (_bfd_elf_link_read_relocs
+ (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
+ link_info->keep_memory));
+ if (internal_relocs == NULL)
+ return FALSE;
+
+ htab = elf_i386_hash_table (link_info);
+ changed_contents = FALSE;
+ changed_relocs = FALSE;
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+
+ /* Get the section contents. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ else
+ {
+ if (!bfd_malloc_and_get_section (abfd, sec, &contents))
+ goto error_return;
+ }
+
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ unsigned int r_type = ELF32_R_TYPE (irel->r_info);
+ unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
+ unsigned int indx;
+ struct elf_link_hash_entry *h;
+
+ if (r_type != R_386_GOT32)
+ continue;
+
+ /* Get the symbol referred to by the reloc. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ Elf_Internal_Sym *isym;
+
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+
+ /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
+ if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
+ && irel->r_offset >= 2
+ && bfd_get_8 (input_bfd,
+ contents + irel->r_offset - 2) == 0x8b)
+ {
+ bfd_put_8 (output_bfd, 0x8d,
+ contents + irel->r_offset - 2);
+ irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
+ if (local_got_refcounts != NULL
+ && local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ changed_contents = TRUE;
+ changed_relocs = TRUE;
+ }
+ continue;
+ }
+
+ indx = r_symndx - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
+
+ 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;
+
+ /* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
+ optimizing _DYNAMIC since ld.so may use its link-time address. */
+ if (h->def_regular
+ && h->type != STT_GNU_IFUNC
+ && h != htab->elf.hdynamic
+ && SYMBOL_REFERENCES_LOCAL (link_info, h)
+ && irel->r_offset >= 2
+ && bfd_get_8 (input_bfd,
+ contents + irel->r_offset - 2) == 0x8b)
+ {
+ bfd_put_8 (output_bfd, 0x8d,
+ contents + irel->r_offset - 2);
+ irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ changed_contents = TRUE;
+ changed_relocs = TRUE;
+ }
+ }
+
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ {
+ if (!changed_contents && !link_info->keep_memory)
+ free (contents);
+ else
+ {
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
+ }
+ }
+
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ {
+ if (!changed_relocs)
+ free (internal_relocs);
+ else
+ elf_section_data (sec)->relocs = internal_relocs;
+ }
+
+ return TRUE;
+
+ error_return:
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+ return FALSE;
+}
+
/* Set the sizes of the dynamic sections. */
static bfd_boolean
/* Set the contents of the .interp section to the interpreter. */
if (info->executable)
{
- s = bfd_get_section_by_name (dynobj, ".interp");
+ s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
abort ();
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
/* Set up .got offsets for local syms, and space for local dynamic
relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
{
struct elf_dyn_relocs *p;
+ if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
+ return FALSE;
+
for (p = ((struct elf_dyn_relocs *)
elf_section_data (s)->local_dynrel);
p != NULL;
it's not incremented, so in order to compute the space reserved
for them, it suffices to multiply the reloc count by the jump
slot size.
-
+
PR ld/13302: We start next_irelative_index at the end of .rela.plt
so that R_386_IRELATIVE entries come last. */
if (htab->elf.srelplt)
if (htab->elf.sgotplt)
{
- struct elf_link_hash_entry *got;
- got = elf_link_hash_lookup (elf_hash_table (info),
- "_GLOBAL_OFFSET_TABLE_",
- FALSE, FALSE, FALSE);
-
/* Don't allocate .got.plt section if there are no GOT nor PLT
- entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
- if ((got == NULL
- || !got->ref_regular_nonweak)
+ entries and there is no reference to _GLOBAL_OFFSET_TABLE_. */
+ if ((htab->elf.hgot == NULL
+ || !htab->elf.hgot->ref_regular_nonweak)
&& (htab->elf.sgotplt->size
== get_elf_backend_data (output_bfd)->got_header_size)
&& (htab->elf.splt == NULL
htab->elf.sgotplt->size = 0;
}
+
+ if (htab->plt_eh_frame != NULL
+ && htab->elf.splt != NULL
+ && htab->elf.splt->size != 0
+ && !bfd_is_abs_section (htab->elf.splt->output_section)
+ && _bfd_elf_eh_frame_present (info))
+ htab->plt_eh_frame->size = sizeof (elf_i386_eh_frame_plt);
+
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
continue;
if (s == htab->elf.splt
- || s == htab->elf.sgot
- || s == htab->elf.sgotplt
- || s == htab->elf.iplt
- || s == htab->elf.igotplt
- || s == htab->sdynbss)
+ || s == htab->elf.sgot)
{
/* Strip this section if we don't need it; see the
comment below. */
if (htab->elf.hplt != NULL)
strip_section = FALSE;
}
+ else if (s == htab->elf.sgotplt
+ || s == htab->elf.iplt
+ || s == htab->elf.igotplt
+ || s == htab->plt_got
+ || s == htab->plt_eh_frame
+ || s == htab->sdynbss)
+ {
+ /* Strip these too. */
+ }
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
{
if (s->size != 0
}
if (htab->plt_eh_frame != NULL
- && htab->elf.splt != NULL
- && htab->elf.splt->size != 0
- && (htab->elf.splt->flags & SEC_EXCLUDE) == 0)
- bfd_put_32 (dynobj, htab->elf.splt->size,
- htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
+ && htab->plt_eh_frame->contents != NULL)
+ {
+ memcpy (htab->plt_eh_frame->contents, elf_i386_eh_frame_plt,
+ sizeof (elf_i386_eh_frame_plt));
+ bfd_put_32 (dynobj, htab->elf.splt->size,
+ htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
+ }
if (htab->elf.dynamic_sections_created)
{
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
+ struct elf_i386_link_hash_entry *eh;
Elf_Internal_Sym *sym;
asection *sec;
- bfd_vma off, offplt;
+ bfd_vma off, offplt, plt_offset;
bfd_vma relocation;
bfd_boolean unresolved_reloc;
bfd_reloc_status_type r;
unsigned int indx;
int tls_type;
+ bfd_vma st_size;
+ asection *resolved_plt;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == R_386_GNU_VTINHERIT
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
+ st_size = sym->st_size;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
&& ((sec->flags & SEC_MERGE) != 0
else
{
bfd_boolean warned ATTRIBUTE_UNUSED;
+ bfd_boolean ignored ATTRIBUTE_UNUSED;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
- unresolved_reloc, warned);
+ unresolved_reloc, warned, ignored);
+ st_size = h->size;
}
- if (sec != NULL && elf_discarded_section (sec))
+ if (sec != NULL && discarded_section (sec))
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, relend, howto, contents);
+ rel, 1, relend, howto, 0, contents);
if (info->relocatable)
continue;
if (info->shared && h->non_got_ref)
{
Elf_Internal_Rela outrel;
- bfd_byte *loc;
asection *sreloc;
bfd_vma offset;
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
sreloc = htab->elf.irelifunc;
- loc = sreloc->contents;
- loc += (sreloc->reloc_count++
- * sizeof (Elf32_External_Rel));
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
/* If this reloc is against an external symbol, we
do not want to fiddle with the addend. Otherwise,
{
asection *s;
Elf_Internal_Rela outrel;
- bfd_byte *loc;
s = htab->elf.srelgot;
if (s == NULL)
+ htab->elf.sgot->output_offset
+ off);
outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
- loc = s->contents;
- loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, s, &outrel);
}
local_got_offsets[r_symndx] |= 1;
return FALSE;
}
else if (!info->executable
+ && !SYMBOLIC_BIND (info, h)
&& h->type == STT_FUNC
&& ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
{
if (h == NULL)
break;
- if (h->plt.offset == (bfd_vma) -1
+ eh = (struct elf_i386_link_hash_entry *) h;
+ if ((h->plt.offset == (bfd_vma) -1
+ && eh->plt_got.offset == (bfd_vma) -1)
|| htab->elf.splt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
break;
}
- relocation = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + h->plt.offset);
+ if (h->plt.offset != (bfd_vma) -1)
+ {
+ resolved_plt = htab->elf.splt;
+ plt_offset = h->plt.offset;
+ }
+ else
+ {
+ resolved_plt = htab->plt_got;
+ plt_offset = eh->plt_got.offset;
+ }
+
+ relocation = (resolved_plt->output_section->vma
+ + resolved_plt->output_offset
+ + plt_offset);
unresolved_reloc = FALSE;
break;
+ case R_386_SIZE32:
+ /* Set to symbol size. */
+ relocation = st_size;
+ /* Fall through. */
+
case R_386_32:
case R_386_PC32:
if ((input_section->flags & SEC_ALLOC) == 0
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && (r_type != R_386_PC32
+ && ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
&& !info->shared
|| h->root.type == bfd_link_hash_undefined)))
{
Elf_Internal_Rela outrel;
- bfd_byte *loc;
bfd_boolean skip, relocate;
asection *sreloc;
goto check_relocation_error;
}
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
-
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
/* If this reloc is against an external symbol, we do
not want to fiddle with the addend. Otherwise, we
if (!info->executable)
{
Elf_Internal_Rela outrel;
- bfd_byte *loc;
asection *sreloc;
outrel.r_offset = rel->r_offset
sreloc = elf_section_data (input_section)->sreloc;
if (sreloc == NULL)
abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
}
/* Fall through */
else
{
Elf_Internal_Rela outrel;
- bfd_byte *loc;
int dr_type;
asection *sreloc;
if (GOT_TLS_GDESC_P (tls_type))
{
+ bfd_byte *loc;
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
<= htab->elf.sgotplt->size);
htab->elf.sgot->contents + off);
outrel.r_info = ELF32_R_INFO (indx, dr_type);
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
- BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
- <= sreloc->contents + sreloc->size);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
if (GOT_TLS_GD_P (tls_type))
{
outrel.r_info = ELF32_R_INFO (indx,
R_386_TLS_DTPOFF32);
outrel.r_offset += 4;
- sreloc->reloc_count++;
- loc += sizeof (Elf32_External_Rel);
- BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
- <= sreloc->contents + sreloc->size);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
}
}
else if (tls_type == GOT_TLS_IE_BOTH)
htab->elf.sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
outrel.r_offset += 4;
- sreloc->reloc_count++;
- loc += sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
}
dr_done:
else
{
Elf_Internal_Rela outrel;
- bfd_byte *loc;
if (htab->elf.srelgot == NULL)
abort ();
bfd_put_32 (output_bfd, 0,
htab->elf.sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
- loc = htab->elf.srelgot->contents;
- loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, htab->elf.srelgot, &outrel);
htab->tls_ldm_got.offset |= 1;
}
relocation = htab->elf.sgot->output_section->vma
{
Elf_Internal_Rela outrel;
asection *sreloc;
- bfd_byte *loc;
outrel.r_offset = rel->r_offset
+ input_section->output_section->vma
sreloc = elf_section_data (input_section)->sreloc;
if (sreloc == NULL)
abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ elf_append_rel (output_bfd, sreloc, &outrel);
if (indx)
continue;
else if (r_type == R_386_TLS_LE_32)
struct elf_i386_link_hash_table *htab;
unsigned plt_entry_size;
const struct elf_i386_backend_data *abed;
+ struct elf_i386_link_hash_entry *eh;
htab = elf_i386_hash_table (info);
if (htab == NULL)
abed = get_elf_i386_backend_data (output_bfd);
plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
+ eh = (struct elf_i386_link_hash_entry *) h;
+
if (h->plt.offset != (bfd_vma) -1)
{
bfd_vma plt_index;
|| plt == NULL
|| gotplt == NULL
|| relplt == NULL)
- return FALSE;
+ abort ();
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
+ got_offset);
rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
bfd_elf32_swap_reloc_out (output_bfd, &rel,
- loc + sizeof (Elf32_External_Rel));
+ loc + sizeof (Elf32_External_Rel));
}
}
else
plt->contents + h->plt.offset
+ abed->plt->plt_plt_offset);
}
+ }
+ else if (eh->plt_got.offset != (bfd_vma) -1)
+ {
+ bfd_vma got_offset, plt_offset;
+ asection *plt, *got, *gotplt;
+ const bfd_byte *got_plt_entry;
+
+ /* Offset of displacement of the indirect jump. */
+ bfd_vma plt_got_offset = 2;
+
+ /* Set the entry in the GOT procedure linkage table. */
+ plt = htab->plt_got;
+ got = htab->elf.sgot;
+ gotplt = htab->elf.sgotplt;
+ got_offset = h->got.offset;
- if (!h->def_regular)
+ if (got_offset == (bfd_vma) -1
+ || plt == NULL
+ || got == NULL
+ || gotplt == NULL)
+ abort ();
+
+ /* Fill in the entry in the GOT procedure linkage table. */
+ if (! info->shared)
{
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value if there were any
- relocations where pointer equality matters (this is a clue
- for the dynamic linker, to make function pointer
- comparisons work between an application and shared
- library), otherwise set it to zero. If a function is only
- called from a binary, there is no need to slow down
- shared libraries because of that. */
- sym->st_shndx = SHN_UNDEF;
- if (!h->pointer_equality_needed)
- sym->st_value = 0;
+ got_plt_entry = elf_i386_got_plt_entry;
+ got_offset += got->output_section->vma + got->output_offset;
}
+ else
+ {
+ got_plt_entry = elf_i386_pic_got_plt_entry;
+ got_offset += (got->output_section->vma
+ + got->output_offset
+ - gotplt->output_section->vma
+ - gotplt->output_offset);
+ }
+
+ plt_offset = eh->plt_got.offset;
+ memcpy (plt->contents + plt_offset, got_plt_entry,
+ sizeof (elf_i386_got_plt_entry));
+ bfd_put_32 (output_bfd, got_offset,
+ plt->contents + plt_offset + plt_got_offset);
+ }
+
+ if (!h->def_regular
+ && (h->plt.offset != (bfd_vma) -1
+ || eh->plt_got.offset != (bfd_vma) -1))
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value if there were any
+ relocations where pointer equality matters (this is a clue
+ for the dynamic linker, to make function pointer
+ comparisons work between an application and shared
+ library), otherwise set it to zero. If a function is only
+ called from a binary, there is no need to slow down
+ shared libraries because of that. */
+ sym->st_shndx = SHN_UNDEF;
+ if (!h->pointer_equality_needed)
+ sym->st_value = 0;
}
if (h->got.offset != (bfd_vma) -1
&& (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
{
Elf_Internal_Rela rel;
- bfd_byte *loc;
/* This symbol has an entry in the global offset table. Set it
up. */
rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
}
- loc = htab->elf.srelgot->contents;
- loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
+ elf_append_rel (output_bfd, htab->elf.srelgot, &rel);
}
if (h->needs_copy)
{
Elf_Internal_Rela rel;
- bfd_byte *loc;
/* This symbol needs a copy reloc. Set it up. */
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
- loc = htab->srelbss->contents;
- loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
+ elf_append_rel (output_bfd, htab->srelbss, &rel);
}
- /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
- be NULL for local symbols.
-
- On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
- is relative to the ".got" section. */
- if (sym != NULL
- && (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || (!abed->is_vxworks
- && h == htab->elf.hgot)))
- sym->st_shndx = SHN_ABS;
-
return TRUE;
}
dynamic linker, before writing them out. */
static enum elf_reloc_type_class
-elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
+elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
{
switch (ELF32_R_TYPE (rela->r_info))
{
return FALSE;
dynobj = htab->elf.dynobj;
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ sdyn = bfd_get_linker_section (dynobj, ".dynamic");
abed = get_elf_i386_backend_data (output_bfd);
if (htab->elf.dynamic_sections_created)
}
/* Adjust .eh_frame for .plt section. */
- if (htab->plt_eh_frame != NULL)
+ if (htab->plt_eh_frame != NULL
+ && htab->plt_eh_frame->contents != NULL)
{
if (htab->elf.splt != NULL
&& htab->elf.splt->size != 0
+ PLT_FDE_START_OFFSET);
}
if (htab->plt_eh_frame->sec_info_type
- == ELF_INFO_TYPE_EH_FRAME)
+ == SEC_INFO_TYPE_EH_FRAME)
{
if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
htab->plt_eh_frame,
return TRUE;
}
-/* Return address for Ith PLT stub in section PLT, for relocation REL
- or (bfd_vma) -1 if it should not be included. */
+/* Return address in section PLT for the Ith GOTPLT relocation, for
+ relocation REL or (bfd_vma) -1 if it should not be included. */
static bfd_vma
-elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
- const arelent *rel ATTRIBUTE_UNUSED)
+elf_i386_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
{
- return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
+ bfd *abfd;
+ const struct elf_i386_backend_data *bed;
+ bfd_vma plt_offset;
+
+ /* Only match R_386_JUMP_SLOT and R_386_IRELATIVE. */
+ if (rel->howto->type != R_386_JUMP_SLOT
+ && rel->howto->type != R_386_IRELATIVE)
+ return (bfd_vma) -1;
+
+ abfd = plt->owner;
+ bed = get_elf_i386_backend_data (abfd);
+ plt_offset = bed->plt->plt_entry_size;
+
+ if (elf_elfheader (abfd)->e_ident[EI_OSABI] != ELFOSABI_GNU)
+ return plt->vma + (i + 1) * plt_offset;
+
+ while (plt_offset < plt->size)
+ {
+ bfd_vma reloc_offset;
+ bfd_byte reloc_offset_raw[4];
+
+ if (!bfd_get_section_contents (abfd, (asection *) plt,
+ reloc_offset_raw,
+ plt_offset + bed->plt->plt_reloc_offset,
+ sizeof (reloc_offset_raw)))
+ return (bfd_vma) -1;
+
+ reloc_offset = H_GET_32 (abfd, reloc_offset_raw);
+ if (reloc_offset == i * sizeof (Elf32_External_Rel))
+ return plt->vma + plt_offset;
+ plt_offset += bed->plt->plt_entry_size;
+ }
+
+ abort ();
}
/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
static bfd_boolean
elf_i386_add_symbol_hook (bfd * abfd,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
+ struct bfd_link_info * info,
Elf_Internal_Sym * sym,
const char ** namep ATTRIBUTE_UNUSED,
flagword * flagsp ATTRIBUTE_UNUSED,
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
- if ((abfd->flags & DYNAMIC) == 0
- && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
- || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
+ if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
+ && (abfd->flags & DYNAMIC) == 0
+ && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
return TRUE;
}
-#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
+#define TARGET_LITTLE_SYM i386_elf32_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
#define ELF_TARGET_ID I386_ELF_DATA
#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
-#define bfd_elf32_bfd_link_hash_table_free elf_i386_link_hash_table_free
#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup elf_i386_reloc_name_lookup
#define elf_backend_plt_sym_val elf_i386_plt_sym_val
#define elf_backend_hash_symbol elf_i386_hash_symbol
#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
-#undef elf_backend_post_process_headers
-#define elf_backend_post_process_headers _bfd_elf_set_osabi
#include "elf32-target.h"
/* FreeBSD support. */
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
+#define TARGET_LITTLE_SYM i386_elf32_fbsd_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
#undef ELF_OSABI
static void
elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
{
- _bfd_elf_set_osabi (abfd, info);
+ _bfd_elf_post_process_headers (abfd, info);
#ifdef OLD_FREEBSD_ABI_LABEL
- /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
- memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
+ {
+ /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */
+ Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
+ memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
+ }
#endif
}
/* Solaris 2. */
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
+#define TARGET_LITTLE_SYM i386_elf32_sol2_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-sol2"
/* Native Client support. */
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_i386_nacl_vec
+#define TARGET_LITTLE_SYM i386_elf32_nacl_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-nacl"
#undef elf32_bed
#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym 0
#undef elf_backend_post_process_headers
-#define elf_backend_post_process_headers _bfd_elf_set_osabi
#undef elf_backend_static_tls_alignment
/* NaCl uses substantially different PLT entries for the same effects. */
0x8b, 0x4b, 0x08, /* mov 0x8(%ebx), %ecx */
0x83, 0xe1, 0xe0, /* and $NACLMASK, %ecx */
0xff, 0xe1, /* jmp *%ecx */
- 0x90 /* nop */
+
+ /* This is expected to be the same size as elf_i386_nacl_plt0_entry,
+ so pad to that size with nop instructions. */
+ 0x90, 0x90, 0x90, 0x90, 0x90, 0x90
};
static const bfd_byte elf_i386_nacl_pic_plt_entry[NACL_PLT_ENTRY_SIZE] =
0, /* is_vxworks */
};
+static bfd_boolean
+elf32_i386_nacl_elf_object_p (bfd *abfd)
+{
+ /* Set the right machine number for a NaCl i386 ELF32 file. */
+ bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386_nacl);
+ return TRUE;
+}
+
#undef elf_backend_arch_data
#define elf_backend_arch_data &elf_i386_nacl_arch_bed
+#undef elf_backend_object_p
+#define elf_backend_object_p elf32_i386_nacl_elf_object_p
+#undef elf_backend_modify_segment_map
+#define elf_backend_modify_segment_map nacl_modify_segment_map
+#undef elf_backend_modify_program_headers
+#define elf_backend_modify_program_headers nacl_modify_program_headers
+#undef elf_backend_final_write_processing
+#define elf_backend_final_write_processing nacl_final_write_processing
+
#include "elf32-target.h"
+/* Restore defaults. */
+#undef elf_backend_object_p
+#undef elf_backend_modify_segment_map
+#undef elf_backend_modify_program_headers
+#undef elf_backend_final_write_processing
+
/* VxWorks support. */
#undef TARGET_LITTLE_SYM
-#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec
+#define TARGET_LITTLE_SYM i386_elf32_vxworks_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-vxworks"
#undef ELF_OSABI
#define elf_backend_arch_data &elf_i386_vxworks_arch_bed
#undef elf_backend_relocs_compatible
-#undef elf_backend_post_process_headers
#undef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook \
elf_vxworks_add_symbol_hook
projects / thirdparty / binutils-gdb.git / blobdiff