/* 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 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "bfd_stdint.h"
#include "objalloc.h"
#include "hashtab.h"
+#include "dwarf2.h"
/* 386 uses REL relocations instead of RELA. */
#define USE_REL 1
case BFD_RELOC_386_IRELATIVE:
TRACE ("BFD_RELOC_386_IRELATIVE");
- return &elf_howto_table[R_386_IRELATIVE];
+ return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
case BFD_RELOC_VTABLE_INHERIT:
TRACE ("BFD_RELOC_VTABLE_INHERIT");
elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
/* pr_pid */
- elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+ elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 28;
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
/* pr_pid */
- elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+ elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
/* pr_reg */
offset = 72;
return FALSE;
case 124: /* Linux/i386 elf_prpsinfo. */
+ elf_tdata (abfd)->core_pid
+ = bfd_get_32 (abfd, note->descdata + 12);
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
elf_tdata (abfd)->core_command
0, 0, 0, 0 /* replaced with offset to start of .plt. */
};
+/* .eh_frame covering the .plt section. */
+
+static const bfd_byte elf_i386_eh_frame_plt[] =
+{
+#define PLT_CIE_LENGTH 20
+#define PLT_FDE_LENGTH 36
+#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
+#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
+ PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
+ 0, 0, 0, 0, /* CIE ID */
+ 1, /* CIE version */
+ 'z', 'R', 0, /* Augmentation string */
+ 1, /* Code alignment factor */
+ 0x7c, /* Data alignment factor */
+ 8, /* Return address column */
+ 1, /* Augmentation size */
+ DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
+ DW_CFA_def_cfa, 4, 4, /* DW_CFA_def_cfa: r4 (esp) ofs 4 */
+ DW_CFA_offset + 8, 1, /* DW_CFA_offset: r8 (eip) at cfa-4 */
+ DW_CFA_nop, DW_CFA_nop,
+
+ PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
+ PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
+ 0, 0, 0, 0, /* R_386_PC32 .plt goes here */
+ 0, 0, 0, 0, /* .plt size goes here */
+ 0, /* Augmentation size */
+ DW_CFA_def_cfa_offset, 8, /* DW_CFA_def_cfa_offset: 8 */
+ DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
+ DW_CFA_def_cfa_offset, 12, /* DW_CFA_def_cfa_offset: 12 */
+ DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
+ DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
+ 11, /* Block length */
+ DW_OP_breg4, 4, /* DW_OP_breg4 (esp): 4 */
+ DW_OP_breg8, 0, /* DW_OP_breg8 (eip): 0 */
+ DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
+ DW_OP_lit2, DW_OP_shl, DW_OP_plus,
+ DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
+};
+
/* On VxWorks, the .rel.plt.unloaded section has absolute relocations
for the PLTResolve stub and then for each PLT entry. */
#define PLTRESOLVE_RELOCS_SHLIB 0
#define is_i386_elf(bfd) \
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
&& elf_tdata (bfd) != NULL \
- && elf_object_id (bfd) == I386_ELF_TDATA)
+ && elf_object_id (bfd) == I386_ELF_DATA)
static bfd_boolean
elf_i386_mkobject (bfd *abfd)
{
return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
- I386_ELF_TDATA);
+ I386_ELF_DATA);
}
/* i386 ELF linker hash table. */
/* Short-cuts to get to dynamic linker sections. */
asection *sdynbss;
asection *srelbss;
+ asection *plt_eh_frame;
- /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
- asection *srelplt2;
-
- /* True if the target system is VxWorks. */
- int is_vxworks;
-
- /* Value used to fill the last word of the first plt entry. */
- bfd_byte plt0_pad_byte;
-
- /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
- bfd_vma next_tls_desc_index;
-
- union {
+ union
+ {
bfd_signed_vma refcount;
bfd_vma offset;
} tls_ldm_got;
/* Used by local STT_GNU_IFUNC symbols. */
htab_t loc_hash_table;
- void *loc_hash_memory;
+ void * loc_hash_memory;
+
+ /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */
+ asection *srelplt2;
+
+ /* True if the target system is VxWorks. */
+ int is_vxworks;
+
+ /* The index of the next unused R_386_TLS_DESC slot in .rel.plt. */
+ bfd_vma next_tls_desc_index;
+
+ /* Value used to fill the last word of the first plt entry. */
+ bfd_byte plt0_pad_byte;
};
/* Get the i386 ELF linker hash table from a link_info structure. */
#define elf_i386_hash_table(p) \
- ((struct elf_i386_link_hash_table *) ((p)->hash))
+ (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
+ == 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)
subclass. */
if (entry == NULL)
{
- entry = bfd_hash_allocate (table,
- sizeof (struct elf_i386_link_hash_entry));
+ entry = (struct bfd_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
if (entry == NULL)
return entry;
}
ret->elf.indx = sec->id;
ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
ret->elf.dynindx = -1;
- ret->elf.plt.offset = (bfd_vma) -1;
- ret->elf.got.offset = (bfd_vma) -1;
*slot = ret;
}
return &ret->elf;
struct elf_i386_link_hash_table *ret;
bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
- ret = bfd_malloc (amt);
+ ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
if (ret == NULL)
return NULL;
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
elf_i386_link_hash_newfunc,
- sizeof (struct elf_i386_link_hash_entry)))
+ sizeof (struct elf_i386_link_hash_entry),
+ I386_ELF_DATA))
{
free (ret);
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;
return FALSE;
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
if (!info->shared)
htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
&htab->srelplt2))
return FALSE;
+ if (!info->no_ld_generated_unwind_info
+ && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL
+ && htab->elf.splt != NULL)
+ {
+ flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
+ htab->plt_eh_frame
+ = bfd_make_section_with_flags (dynobj, ".eh_frame",
+ flags | SEC_READONLY);
+ 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;
}
unsigned int to_type = from_type;
bfd_boolean check = TRUE;
+ /* Skip TLS transition for functions. */
+ if (h != NULL
+ && (h->type == STT_FUNC
+ || h->type == STT_GNU_IFUNC))
+ return TRUE;
+
switch (from_type)
{
case R_386_TLS_GD:
name = h->root.root.string;
else
{
- Elf_Internal_Sym *isym;
struct elf_i386_link_hash_table *htab;
+
htab = elf_i386_hash_table (info);
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
+ if (htab == NULL)
+ name = "*unknown*";
+ else
+ {
+ Elf_Internal_Sym *isym;
+
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+ name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
+ }
}
(*_bfd_error_handler)
BFD_ASSERT (is_i386_elf (abfd));
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
symtab_hdr = &elf_symtab_hdr (abfd);
sym_hashes = elf_sym_hashes (abfd);
/* Check relocation against local STT_GNU_IFUNC symbol. */
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
{
- h = elf_i386_get_local_sym_hash (htab, abfd, rel,
- TRUE);
+ h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
if (h == NULL)
return FALSE;
-
+
/* Fake a STT_GNU_IFUNC symbol. */
h->type = STT_GNU_IFUNC;
h->def_regular = 1;
case R_386_PLT32:
case R_386_GOT32:
case R_386_GOTOFF:
- if (!_bfd_elf_create_ifunc_sections (abfd, info))
+ if (htab->elf.dynobj == NULL)
+ htab->elf.dynobj = abfd;
+ if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
return FALSE;
break;
}
/* 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;
size = symtab_hdr->sh_info;
size *= (sizeof (bfd_signed_vma)
+ sizeof (bfd_vma) + sizeof(char));
- local_got_refcounts = bfd_zalloc (abfd, size);
+ local_got_refcounts = (bfd_signed_vma *)
+ bfd_zalloc (abfd, size);
if (local_got_refcounts == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = local_got_refcounts;
easily. Oh well. */
void **vpp;
asection *s;
- Elf_Internal_Sym *isym;
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
abfd, r_symndx);
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
- p = bfd_alloc (htab->elf.dynobj, amt);
+ p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
+ amt);
if (p == NULL)
return FALSE;
p->next = *head;
asection *sec,
const Elf_Internal_Rela *relocs)
{
+ struct elf_i386_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
if (info->relocatable)
return TRUE;
+ htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
elf_section_data (sec)->local_dynrel = NULL;
symtab_hdr = &elf_symtab_hdr (abfd);
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
- struct elf_i386_link_hash_entry *eh;
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
-
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
- eh = (struct elf_i386_link_hash_entry *) h;
+ }
+ else
+ {
+ /* A local symbol. */
+ Elf_Internal_Sym *isym;
+
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+ abfd, r_symndx);
+
+ /* Check relocation against local STT_GNU_IFUNC symbol. */
+ if (isym != NULL
+ && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
+ if (h == NULL)
+ abort ();
+ }
+ }
+
+ if (h)
+ {
+ struct elf_i386_link_hash_entry *eh;
+ struct elf_dyn_relocs **pp;
+ struct elf_dyn_relocs *p;
+ eh = (struct elf_i386_link_hash_entry *) h;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
if (p->sec == sec)
{
switch (r_type)
{
case R_386_TLS_LDM:
- if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
- elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
+ if (htab->tls_ldm_got.refcount > 0)
+ htab->tls_ldm_got.refcount -= 1;
break;
case R_386_TLS_GD:
{
if (h->got.refcount > 0)
h->got.refcount -= 1;
+ if (h->type == STT_GNU_IFUNC)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
}
else if (local_got_refcounts != NULL)
{
case R_386_32:
case R_386_PC32:
- if (info->shared)
+ if (info->shared
+ && (h == NULL || h->type != STT_GNU_IFUNC))
break;
/* Fall through */
}
break;
+ case R_386_GOTOFF:
+ if (h != NULL && h->type == STT_GNU_IFUNC)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
+
default:
break;
}
}
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
/* If there aren't any dynamic relocs in read-only sections, then
we can keep the dynamic relocs and avoid the copy reloc. This
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
- if (h->root.type == bfd_link_hash_warning)
- /* When warning symbols are created, they **replace** the "real"
- entry in the hash table, thus we never get to see the real
- symbol in a hash traversal. So look at it now. */
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
eh = (struct elf_i386_link_hash_entry *) h;
info = (struct bfd_link_info *) inf;
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
here if it is defined and referenced in a non-shared object. */
struct elf_i386_link_hash_entry *eh;
struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ /* Skip local IFUNC symbols. */
+ if (h->forced_local && h->type == STT_GNU_IFUNC)
+ return TRUE;
eh = (struct elf_i386_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
info->flags |= DF_TEXTREL;
+ if (info->warn_shared_textrel && info->shared)
+ info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
+ p->sec->owner, h->root.root.string,
+ p->sec);
+
/* Not an error, just cut short the traversal. */
return FALSE;
}
bfd *ibfd;
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
dynobj = htab->elf.dynobj;
if (dynobj == NULL)
abort ();
{
srel = elf_section_data (p->sec)->sreloc;
srel->size += p->count * sizeof (Elf32_External_Rel);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0
+ && (info->flags & DF_TEXTREL) == 0)
+ {
+ info->flags |= DF_TEXTREL;
+ if (info->warn_shared_textrel && info->shared)
+ info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
+ p->sec->owner, p->sec);
+ }
}
}
}
if (htab->elf.srelplt)
htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
+ 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)
+ && (htab->elf.sgotplt->size
+ == get_elf_backend_data (output_bfd)->got_header_size)
+ && (htab->elf.splt == NULL
+ || htab->elf.splt->size == 0)
+ && (htab->elf.sgot == NULL
+ || htab->elf.sgot->size == 0)
+ && (htab->elf.iplt == NULL
+ || htab->elf.iplt->size == 0)
+ && (htab->elf.igotplt == NULL
+ || htab->elf.igotplt->size == 0))
+ htab->elf.sgotplt->size = 0;
+ }
+
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
section's contents are written out. This should not happen,
but this way if it does, we get a R_386_NONE reloc instead
of garbage. */
- s->contents = bfd_zalloc (dynobj, s->size);
+ s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
if (s->contents == NULL)
return FALSE;
}
+ 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);
+
if (htab->elf.dynamic_sections_created)
{
/* Add some entries to the .dynamic section. We fill in the
if (tlsbase && tlsbase->type == STT_TLS)
{
+ struct elf_i386_link_hash_table *htab;
struct bfd_link_hash_entry *bh = NULL;
const struct elf_backend_data *bed
= get_elf_backend_data (output_bfd);
+ htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
if (!(_bfd_generic_link_add_one_symbol
(info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
tls_sec, 0, NULL, FALSE,
bed->collect, &bh)))
return FALSE;
- elf_i386_hash_table (info)->tls_module_base = bh;
+ htab->tls_module_base = bh;
tlsbase = (struct elf_link_hash_entry *)bh;
tlsbase->def_regular = 1;
Elf_Internal_Shdr *hdr,
asection *sec)
{
- register const char *name;
+ const char *name;
name = bfd_get_section_name (abfd, sec);
static void
elf_i386_set_tls_module_base (struct bfd_link_info *info)
{
+ struct elf_i386_link_hash_table *htab;
struct bfd_link_hash_entry *base;
if (!info->executable)
return;
- base = elf_i386_hash_table (info)->tls_module_base;
+ htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return;
- if (!base)
+ base = htab->tls_module_base;
+ if (base == NULL)
return;
- base->u.def.value = elf_hash_table (info)->tls_size;
+ base->u.def.value = htab->elf.tls_size;
}
/* Return the base VMA address which should be subtracted from real addresses
elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
{
struct elf_link_hash_table *htab = elf_hash_table (info);
+ const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
+ bfd_vma static_tls_size;
/* If tls_sec is NULL, we should have signalled an error already. */
if (htab->tls_sec == NULL)
return 0;
- return htab->tls_size + htab->tls_sec->vma - address;
+
+ /* Consider special static TLS alignment requirements. */
+ static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
+ return static_tls_size + htab->tls_sec->vma - address;
}
/* Relocate an i386 ELF section. */
bfd_boolean is_vxworks_tls;
BFD_ASSERT (is_i386_elf (input_bfd));
-
+
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
symtab_hdr = &elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
&& ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
/* Relocate against local STT_GNU_IFUNC symbol. */
- h = elf_i386_get_local_sym_hash (htab, input_bfd,
- rel, FALSE);
+ h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
+ FALSE);
if (h == NULL)
abort ();
}
else
{
- bfd_boolean warned;
+ bfd_boolean warned ATTRIBUTE_UNUSED;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
}
if (sec != NULL && elf_discarded_section (sec))
- {
- /* For relocs against symbols from removed linkonce sections,
- or sections discarded by a linker script, we just want the
- section contents zeroed. Avoid any special processing. */
- _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
- rel->r_info = 0;
- rel->r_addend = 0;
- continue;
- }
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, relend, howto, contents);
if (info->relocatable)
continue;
internal symbol, we have updated addend. */
continue;
}
-
+ /* FALLTHROUGH */
case R_386_PC32:
case R_386_PLT32:
goto do_relocation;
/* We can't use h->got.offset here to save state, or
even just remember the offset, as finish_dynamic_symbol
would use that as offset into .got. */
-
+
if (htab->elf.splt != NULL)
{
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
sreloc = elf_section_data (input_section)->sreloc;
- BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
+ if (sreloc == NULL || sreloc->contents == NULL)
+ {
+ r = bfd_reloc_notsupported;
+ goto check_relocation_error;
+ }
loc = sreloc->contents;
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
xchg %ax,%ax */
bfd_vma roff;
-
+
roff = rel->r_offset;
bfd_put_8 (output_bfd, 0x66, contents + roff);
bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
- int dr_type, indx;
+ int dr_type;
asection *sreloc;
if (htab->elf.srelgot == NULL)
break;
case R_386_TLS_LDO_32:
- if (info->shared || (input_section->flags & SEC_CODE) == 0)
+ if (!info->executable || (input_section->flags & SEC_CODE) == 0)
relocation -= elf_i386_dtpoff_base (info);
else
/* When converting LDO to LE, we must negate. */
Elf_Internal_Rela outrel;
asection *sreloc;
bfd_byte *loc;
- int indx;
outrel.r_offset = rel->r_offset
+ input_section->output_section->vma
contents, rel->r_offset,
relocation, 0);
+check_relocation_error:
if (r != bfd_reloc_ok)
{
const char *name;
{
struct elf_i386_link_hash_table *htab;
- /* PR 10433: STT_GNU_IFUNC symbols must go through the PLT
- only when they are referenced, not when they are defined. */
- if (h->type == STT_GNU_IFUNC
- && h->def_regular
- && ! h->ref_regular
- && ! info->relocatable)
- {
- if (! ((h->dynindx != -1
- || h->forced_local)
- && ((info->shared
- && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak))
- || ! h->forced_local)
- && elf_hash_table (info)->dynamic_sections_created))
- return TRUE;
- }
-
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
if (h->plt.offset != (bfd_vma) -1)
{
|| plt == NULL
|| gotplt == NULL
|| relplt == NULL)
- abort ();
+ return FALSE;
/* Get the index in the procedure linkage table which
corresponds to this symbol. This is the index of this symbol
Get the offset into the .got table of the entry that
corresponds to this function. Each .got entry is 4 bytes.
The first three are reserved.
-
+
For static executables, we don't reserve anything. */
if (plt == htab->elf.splt)
}
else
{
+ asection *plt;
+
if (!h->pointer_equality_needed)
abort ();
/* For non-shared object, we can't use .got.plt, which
contains the real function addres if we need pointer
equality. We load the GOT entry with the PLT entry. */
- asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
+ plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
bfd_put_32 (output_bfd,
(plt->output_section->vma
+ plt->output_offset + h->plt.offset),
asection *sdyn;
htab = elf_i386_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
+
dynobj = htab->elf.dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
if (htab->elf.sgotplt)
{
+ if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
+ {
+ (*_bfd_error_handler)
+ (_("discarded output section: `%A'"), htab->elf.sgotplt);
+ return FALSE;
+ }
+
/* Fill in the first three entries in the global offset table. */
if (htab->elf.sgotplt->size > 0)
{
elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
}
+ /* Adjust .eh_frame for .plt section. */
+ if (htab->plt_eh_frame != NULL)
+ {
+ if (htab->elf.splt != NULL
+ && htab->elf.splt->size != 0
+ && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
+ && htab->elf.splt->output_section != NULL
+ && htab->plt_eh_frame->output_section != NULL)
+ {
+ bfd_vma plt_start = htab->elf.splt->output_section->vma;
+ bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
+ + htab->plt_eh_frame->output_offset
+ + PLT_FDE_START_OFFSET;
+ bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
+ htab->plt_eh_frame->contents
+ + PLT_FDE_START_OFFSET);
+ }
+ if (htab->plt_eh_frame->sec_info_type
+ == ELF_INFO_TYPE_EH_FRAME)
+ {
+ if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
+ htab->plt_eh_frame,
+ htab->plt_eh_frame->contents))
+ return FALSE;
+ }
+ }
+
if (htab->elf.sgot && htab->elf.sgot->size > 0)
elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
file. */
static bfd_boolean
-elf_i386_add_symbol_hook (bfd * abfd ATTRIBUTE_UNUSED,
+elf_i386_add_symbol_hook (bfd * abfd,
struct bfd_link_info * info ATTRIBUTE_UNUSED,
Elf_Internal_Sym * sym,
const char ** namep ATTRIBUTE_UNUSED,
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
- if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
+ if ((abfd->flags & DYNAMIC) == 0
+ && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
+ || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
+ elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
return TRUE;
}
#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
+#define ELF_TARGET_ID I386_ELF_DATA
#define ELF_MACHINE_CODE EM_386
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_plt_readonly 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
+#define elf_backend_plt_alignment 4
/* Support RELA for objdump of prelink objects. */
#define elf_info_to_howto elf_i386_info_to_howto_rel
#include "elf32-target.h"
+/* Solaris 2. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_i386_sol2_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-i386-sol2"
+
+/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
+ objects won't be recognized. */
+#undef ELF_OSABI
+
+#undef elf32_bed
+#define elf32_bed elf32_i386_sol2_bed
+
+/* The 32-bit static TLS arena size is rounded to the nearest 8-byte
+ boundary. */
+#undef elf_backend_static_tls_alignment
+#define elf_backend_static_tls_alignment 8
+
+/* The Solaris 2 ABI requires a plt symbol on all platforms.
+
+ Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
+ File, p.63. */
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 1
+
+#include "elf32-target.h"
+
/* VxWorks support. */
#undef TARGET_LITTLE_SYM
#undef elf_backend_final_write_processing
#define elf_backend_final_write_processing \
elf_vxworks_final_write_processing
+#undef elf_backend_static_tls_alignment
/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
define it. */
projects / deliverable / binutils-gdb.git / blobdiff