/* 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, 2012
- Free Software Foundation, Inc.
+ Copyright (C) 1993-2016 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "objalloc.h"
#include "hashtab.h"
#include "dwarf2.h"
+#include "opcode/i386.h"
/* 386 uses REL relocations instead of RELA. */
#define USE_REL 1
static reloc_howto_type elf_howto_table[]=
{
- HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
+ HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
bfd_elf_generic_reloc, "R_386_NONE",
TRUE, 0x00000000, 0x00000000, FALSE),
HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_IRELATIVE",
TRUE, 0xffffffff, 0xffffffff, FALSE),
+ HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+ bfd_elf_generic_reloc, "R_386_GOT32X",
+ TRUE, 0xffffffff, 0xffffffff, FALSE),
/* Another gap. */
-#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
-#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
+#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
+#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_386_GNU_VTINHERIT, /* type */
TRACE ("BFD_RELOC_386_IRELATIVE");
return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
+ case BFD_RELOC_386_GOT32X:
+ TRACE ("BFD_RELOC_386_GOT32X");
+ return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
+
case BFD_RELOC_VTABLE_INHERIT:
TRACE ("BFD_RELOC_VTABLE_INHERIT");
return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
&& ((indx = r_type - R_386_ext_offset) - R_386_standard
>= R_386_ext - R_386_standard)
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
- >= R_386_irelative - R_386_ext)
- && ((indx = r_type - R_386_vt_offset) - R_386_irelative
- >= R_386_vt - R_386_irelative))
+ >= R_386_ext2 - R_386_ext)
+ && ((indx = r_type - R_386_vt_offset) - R_386_ext2
+ >= R_386_vt - R_386_ext2))
{
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
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;
+ /* Symbol is referenced by R_386_GOTOFF relocation. */
+ unsigned int gotoff_ref : 1;
+
+ /* Reference count of C/C++ function pointer relocations in read-write
+ section which can be resolved at run-time. */
+ bfd_signed_vma func_pointer_refcount;
+
+ /* 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->gotoff_ref = 0;
+ eh->func_pointer_refcount = 0;
+ 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->func_pointer_refcount = 0;
+ 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 *
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. */
return FALSE;
htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!info->shared)
- htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
-
- if (!htab->sdynbss
- || (!info->shared && !htab->srelbss))
+ if (!htab->sdynbss)
abort ();
+ if (bfd_link_executable (info))
+ {
+ /* Always allow copy relocs for building executables. */
+ asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
+ if (s == NULL)
+ {
+ const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
+ s = bfd_make_section_anyway_with_flags (dynobj,
+ ".rel.bss",
+ (bed->dynamic_sec_flags
+ | SEC_READONLY));
+ if (s == NULL
+ || ! bfd_set_section_alignment (dynobj, s,
+ bed->s->log_file_align))
+ return FALSE;
+ }
+ htab->srelbss = s;
+ }
+
if (get_elf_i386_backend_data (dynobj)->is_vxworks
&& !elf_vxworks_create_dynamic_sections (dynobj, info,
&htab->srelplt2))
eind->tls_type = GOT_UNKNOWN;
}
+ /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
+ generate a R_386_COPY reloc. */
+ edir->gotoff_ref |= eind->gotoff_ref;
+
if (ELIMINATE_COPY_RELOCS
&& ind->root.type != bfd_link_hash_indirect
&& dir->dynamic_adjusted)
dir->pointer_equality_needed |= ind->pointer_equality_needed;
}
else
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ {
+ if (eind->func_pointer_refcount > 0)
+ {
+ edir->func_pointer_refcount += eind->func_pointer_refcount;
+ eind->func_pointer_refcount = 0;
+ }
+
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ }
}
/* Return TRUE if the TLS access code sequence support transition
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (h == NULL)
to_type = R_386_TLS_LE_32;
{
unsigned int new_to_type = to_type;
- if (info->executable
+ if (bfd_link_executable (info)
&& h != NULL
&& h->dynindx == -1
&& (tls_type & GOT_TLS_IE))
break;
case R_386_TLS_LDM:
- if (info->executable)
+ if (bfd_link_executable (info))
to_type = R_386_TLS_LE_32;
break;
return TRUE;
}
+/* Rename some of the generic section flags to better document how they
+ are used here. */
+#define need_convert_load sec_flg0
+
/* Look through the relocs for a section during the first phase, and
calculate needed space in the global offset table, procedure linkage
table, and dynamic reloc sections. */
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
+ bfd_boolean use_plt_got;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
BFD_ASSERT (is_i386_elf (abfd));
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);
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
+ struct elf_i386_link_hash_entry *eh;
Elf_Internal_Sym *isym;
const char *name;
bfd_boolean size_reloc;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
+ eh = (struct elf_i386_link_hash_entry *) h;
if (h != NULL)
{
/* Create the ifunc sections for static executables. If we
default:
break;
+ case R_386_GOTOFF:
+ eh->gotoff_ref = 1;
case R_386_32:
case R_386_PC32:
case R_386_PLT32:
case R_386_GOT32:
- case R_386_GOTOFF:
+ case R_386_GOT32X:
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
/* It is referenced by a non-shared object. */
h->ref_regular = 1;
+ h->root.non_ir_ref = 1;
+
+ if (h->type == STT_GNU_IFUNC)
+ elf_tdata (info->output_bfd)->has_gnu_symbols
+ |= elf_gnu_symbol_ifunc;
}
if (! elf_i386_tls_transition (info, abfd, sec, NULL,
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
info->flags |= DF_STATIC_TLS;
/* Fall through */
case R_386_GOT32:
+ case R_386_GOT32X:
case R_386_TLS_GD:
case R_386_TLS_GOTDESC:
case R_386_TLS_DESC_CALL:
switch (r_type)
{
default:
- case R_386_GOT32: tls_type = GOT_NORMAL; break;
+ case R_386_GOT32:
+ case R_386_GOT32X:
+ tls_type = GOT_NORMAL;
+ break;
case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
case R_386_TLS_GOTDESC:
case R_386_TLS_DESC_CALL:
case R_386_TLS_LE_32:
case R_386_TLS_LE:
- if (info->executable)
+ if (bfd_link_executable (info))
break;
info->flags |= DF_STATIC_TLS;
/* Fall through */
case R_386_32:
case R_386_PC32:
- if (h != NULL && info->executable)
+ if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
/* We may need a .plt entry if the function this reloc
refers to is in a shared lib. */
h->plt.refcount += 1;
- if (r_type != R_386_PC32)
- h->pointer_equality_needed = 1;
+ if (r_type == R_386_PC32)
+ {
+ /* Since something like ".long foo - ." may be used
+ as pointer, make sure that PLT is used if foo is
+ a function defined in a shared library. */
+ if ((sec->flags & SEC_CODE) == 0)
+ h->pointer_equality_needed = 1;
+ }
+ else
+ {
+ h->pointer_equality_needed = 1;
+ /* R_386_32 can be resolved at run-time. */
+ if (r_type == R_386_32
+ && (sec->flags & SEC_READONLY) == 0)
+ eh->func_pointer_refcount += 1;
+ }
}
size_reloc = FALSE;
may need to keep relocations for symbols satisfied by a
dynamic library if we manage to avoid copy relocs for the
symbol. */
- if ((info->shared
+ if ((bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& (r_type != R_386_PC32
|| (h != NULL
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
relocations we need for this symbol. */
if (h != NULL)
{
- head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
+ head = &eh->dyn_relocs;
}
else
{
default:
break;
}
+
+ if (use_plt_got
+ && h != NULL
+ && h->plt.refcount > 0
+ && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
+ || 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;
+ }
+
+ if ((r_type == R_386_GOT32 || r_type == R_386_GOT32X)
+ && (h == NULL || h->type != STT_GNU_IFUNC))
+ sec->need_convert_load = 1;
}
return TRUE;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
htab = elf_i386_hash_table (info);
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
case R_386_GOT32:
+ case R_386_GOT32X:
if (h != NULL)
{
if (h->got.refcount > 0)
case R_386_32:
case R_386_PC32:
case R_386_SIZE32:
- if (info->shared
+ if (bfd_link_pic (info)
&& (h == NULL || h->type != STT_GNU_IFUNC))
break;
/* Fall through */
{
if (h->plt.refcount > 0)
h->plt.refcount -= 1;
+ if (r_type == R_386_32
+ && (sec->flags & SEC_READONLY) == 0)
+ {
+ struct elf_i386_link_hash_entry *eh
+ = (struct elf_i386_link_hash_entry *) h;
+ if (eh->func_pointer_refcount > 0)
+ eh->func_pointer_refcount -= 1;
+ }
}
break;
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
+ if (!bfd_link_executable (info))
return TRUE;
/* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
+ GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
+ reloc. */
+ eh = (struct elf_i386_link_hash_entry *) h;
+ if (!h->non_got_ref && !eh->gotoff_ref)
return TRUE;
/* If -z nocopyreloc was given, we won't generate them either. */
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
- doesn't work on VxWorks, where we can not have dynamic relocations
- (other than copy and jump slot relocations) in an executable. */
+ /* If there aren't any dynamic relocs in read-only sections nor
+ R_386_GOTOFF relocation, then we can keep the dynamic relocs and
+ avoid the copy reloc. This doesn't work on VxWorks, where we can
+ not have dynamic relocations (other than copy and jump slot
+ relocations) in an executable. */
if (ELIMINATE_COPY_RELOCS
+ && !eh->gotoff_ref
&& !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
{
- eh = (struct elf_i386_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
s = p->sec->output_section;
s = htab->sdynbss;
- return _bfd_elf_adjust_dynamic_copy (h, s);
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
/* Allocate space in .plt, .got and associated reloc sections for
plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ /* Clear the reference count of function pointer relocations if
+ symbol isn't a normal function. */
+ if (h->type != STT_FUNC)
+ eh->func_pointer_refcount = 0;
+
+ /* 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);
+ /* Don't create the PLT entry if there are only function pointer
+ relocations which can be resolved at run-time. */
else if (htab->elf.dynamic_sections_created
- && h->plt.refcount > 0)
+ && (h->plt.refcount > eh->func_pointer_refcount
+ || eh->plt_got.refcount > 0))
{
+ bfd_boolean use_plt_got;
+
+ /* Clear the reference count of function pointer relocations
+ if PLT is used. */
+ eh->func_pointer_refcount = 0;
+
+ if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
+ {
+ /* Don't use the regular PLT for DF_BIND_NOW. */
+ h->plt.offset = (bfd_vma) -1;
+
+ /* Use the GOT PLT. */
+ h->got.refcount = 1;
+ eh->plt_got.refcount = 1;
+ }
+
+ 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
return FALSE;
}
- if (info->shared
+ if (bfd_link_pic (info)
|| 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. */
+ first entry. The .plt section is used by prelink to undo
+ prelinking for dynamic relocations. */
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
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
the shared library. */
- if (! info->shared
+ if (! bfd_link_pic (info)
&& !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)
+ && !bfd_link_pic (info))
{
/* VxWorks has a second set of relocations for each PLT entry
in executables. They go in a separate relocation section,
/* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
make it a R_386_TLS_LE_32 requiring no TLS entry. */
if (h->got.refcount > 0
- && info->executable
+ && bfd_link_executable (info)
&& h->dynindx == -1
&& (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
h->got.offset = (bfd_vma) -1;
else if (! GOT_TLS_GDESC_P (tls_type)
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && (info->shared
+ && (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
if (GOT_TLS_GDESC_P (tls_type))
space for pc-relative relocs that have become local due to symbol
visibility changes. */
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* The only reloc that uses pc_count is R_386_PC32, which will
appear on a call or on something like ".long foo - .". We
{
/* For the non-shared case, discard space for relocs against
symbols which turn out to need copy relocs or are not
- dynamic. */
+ dynamic. Keep dynamic relocations for run-time function
+ pointer initialization. */
- if (!h->non_got_ref
+ if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
&& ((h->def_dynamic
&& !h->def_regular)
|| (htab->elf.dynamic_sections_created
}
eh->dyn_relocs = NULL;
+ eh->func_pointer_refcount = 0;
keep: ;
}
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"),
+ if ((info->warn_shared_textrel && bfd_link_pic (info))
+ || info->error_textrel)
+ info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
p->sec->owner, h->root.root.string,
p->sec);
return TRUE;
}
-/* Convert
- mov foo@GOT(%reg), %reg
+/* With the local symbol, foo, we convert
+ mov foo@GOT[(%reg1)], %reg2
to
- lea foo@GOTOFF(%reg), %reg
- with the local symbol, foo. */
+ lea foo[@GOTOFF(%reg1)], %reg2
+ and convert
+ call/jmp *foo@GOT[(%reg)]
+ to
+ nop call foo/jmp foo nop
+ When PIC is false, convert
+ test %reg1, foo@GOT[(%reg2)]
+ to
+ test $foo, %reg1
+ and convert
+ binop foo@GOT[(%reg1)], %reg2
+ to
+ binop $foo, %reg2
+ where binop is one of adc, add, and, cmp, or, sbb, sub, xor
+ instructions. */
static bfd_boolean
-elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
- struct bfd_link_info *link_info)
+elf_i386_convert_load (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs;
if (!is_elf_hash_table (link_info->hash))
return FALSE;
- /* Nothing to do if there are no codes, no relocations or no output. */
+ /* Nothing to do if there is no need or no output. */
if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
- || sec->reloc_count == 0
- || discarded_section (sec))
+ || sec->need_convert_load == 0
+ || bfd_is_abs_section (sec->output_section))
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
unsigned int indx;
struct elf_link_hash_entry *h;
+ unsigned int opcode;
+ unsigned int modrm;
+ bfd_vma roff;
+ bfd_boolean baseless;
+ Elf_Internal_Sym *isym;
+ unsigned int addend;
+ unsigned int nop;
+ bfd_vma nop_offset;
- if (r_type != R_386_GOT32)
+ if (r_type != R_386_GOT32 && r_type != R_386_GOT32X)
continue;
- /* Get the symbol referred to by the reloc. */
- if (r_symndx < symtab_hdr->sh_info)
+ roff = irel->r_offset;
+ if (roff < 2)
+ continue;
+
+ /* Addend for R_386_GOT32 and R_386_GOT32X relocations must be 0. */
+ addend = bfd_get_32 (abfd, contents + roff);
+ if (addend != 0)
+ continue;
+
+ modrm = bfd_get_8 (abfd, contents + roff - 1);
+ baseless = (modrm & 0xc7) == 0x5;
+
+ if (r_type == R_386_GOT32X
+ && baseless
+ && bfd_link_pic (link_info))
{
- Elf_Internal_Sym *isym;
+ /* For PIC, disallow R_386_GOT32X without a base register
+ since we don't know what the GOT base is. Allow
+ R_386_GOT32 for existing object files. */
+ const char *name;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
+ r_symndx);
+ name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
+ }
+ else
+ {
+ indx = r_symndx - symtab_hdr->sh_info;
+ h = elf_sym_hashes (abfd)[indx];
+ BFD_ASSERT (h != NULL);
+ name = h->root.root.string;
+ }
+
+ (*_bfd_error_handler)
+ (_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
+ abfd, name);
+ goto error_return;
+ }
+
+ opcode = bfd_get_8 (abfd, contents + roff - 2);
+
+ /* It is OK to convert mov to lea. */
+ if (opcode != 0x8b)
+ {
+ /* Only convert R_386_GOT32X relocation for call, jmp or
+ one of adc, add, and, cmp, or, sbb, sub, test, xor
+ instructions. */
+ if (r_type != R_386_GOT32X)
+ continue;
+
+ /* It is OK to convert indirect branch to direct branch. It
+ is OK to convert adc, add, and, cmp, or, sbb, sub, test,
+ xor only when PIC is false. */
+ if (opcode != 0xff && bfd_link_pic (link_info))
+ continue;
+ }
+ /* Try to convert R_386_GOT32 and R_386_GOT32X. Get the symbol
+ referred to by the reloc. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
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
- && 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;
+ /* STT_GNU_IFUNC must keep GOT32 relocations. */
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ continue;
+
+ h = NULL;
+ if (opcode == 0x0ff)
+ /* Convert "call/jmp *foo@GOT[(%reg)]". */
+ goto convert_branch;
+ else
+ /* Convert "mov foo@GOT[(%reg1)], %reg2",
+ "test %reg1, foo@GOT(%reg2)" and
+ "binop foo@GOT[(%reg1)], %reg2". */
+ goto convert_load;
}
indx = r_symndx - symtab_hdr->sh_info;
|| 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)
- && bfd_get_8 (input_bfd,
- contents + irel->r_offset - 2) == 0x8b)
+ /* STT_GNU_IFUNC must keep GOT32 relocations. */
+ if (h->type == STT_GNU_IFUNC)
+ continue;
+
+ if (opcode == 0xff)
+ {
+ /* We have "call/jmp *foo@GOT[(%reg)]". */
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && SYMBOL_REFERENCES_LOCAL (link_info, h))
+ {
+ /* The function is locally defined. */
+convert_branch:
+ /* Convert R_386_GOT32X to R_386_PC32. */
+ if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
+ {
+ /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
+ is a nop prefix. */
+ modrm = 0xe8;
+ nop = link_info->call_nop_byte;
+ if (link_info->call_nop_as_suffix)
+ {
+ nop_offset = roff + 3;
+ irel->r_offset -= 1;
+ }
+ else
+ nop_offset = roff - 2;
+ }
+ else
+ {
+ /* Convert to "jmp foo nop". */
+ modrm = 0xe9;
+ nop = NOP_OPCODE;
+ nop_offset = roff + 3;
+ irel->r_offset -= 1;
+ }
+
+ bfd_put_8 (abfd, nop, contents + nop_offset);
+ bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
+ /* When converting to PC-relative relocation, we
+ need to adjust addend by -4. */
+ bfd_put_32 (abfd, -4, contents + irel->r_offset);
+ irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
+
+ if (h)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else
+ {
+ if (local_got_refcounts != NULL
+ && local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+
+ changed_contents = TRUE;
+ changed_relocs = TRUE;
+ }
+ }
+ else
{
- 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;
+ /* We have "mov foo@GOT[(%re1g)], %reg2",
+ "test %reg1, foo@GOT(%reg2)" and
+ "binop foo@GOT[(%reg1)], %reg2".
+
+ Avoid optimizing _DYNAMIC since ld.so may use its
+ link-time address. */
+ if (h == htab->elf.hdynamic)
+ continue;
+
+ /* def_regular is set by an assignment in a linker script in
+ bfd_elf_record_link_assignment. */
+ if ((h->def_regular
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && SYMBOL_REFERENCES_LOCAL (link_info, h))
+ {
+convert_load:
+ if (opcode == 0x8b)
+ {
+ /* Convert "mov foo@GOT(%reg1), %reg2" to
+ "lea foo@GOTOFF(%reg1), %reg2". */
+ if (r_type == R_386_GOT32X
+ && (baseless || !bfd_link_pic (link_info)))
+ {
+ r_type = R_386_32;
+ /* For R_386_32, convert
+ "lea foo@GOTOFF(%reg1), %reg2" to
+ "lea foo@GOT, %reg2". */
+ if (!baseless)
+ {
+ modrm = 0x5 | (modrm & 0x38);
+ bfd_put_8 (abfd, modrm, contents + roff - 1);
+ }
+ }
+ else
+ r_type = R_386_GOTOFF;
+ opcode = 0x8d;
+ }
+ else
+ {
+ if (opcode == 0x85)
+ {
+ /* Convert "test %reg1, foo@GOT(%reg2)" to
+ "test $foo, %reg1". */
+ modrm = 0xc0 | (modrm & 0x38) >> 3;
+ opcode = 0xf7;
+ }
+ else
+ {
+ /* Convert "binop foo@GOT(%reg1), %reg2" to
+ "binop $foo, %reg2". */
+ modrm = (0xc0
+ | (modrm & 0x38) >> 3
+ | (opcode & 0x3c));
+ opcode = 0x81;
+ }
+ bfd_put_8 (abfd, modrm, contents + roff - 1);
+ r_type = R_386_32;
+ }
+
+ bfd_put_8 (abfd, opcode, contents + roff - 2);
+ irel->r_info = ELF32_R_INFO (r_symndx, r_type);
+
+ if (h)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else
+ {
+ if (local_got_refcounts != NULL
+ && local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+
+ changed_contents = TRUE;
+ changed_relocs = TRUE;
+ }
}
}
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
+ if (bfd_link_executable (info) && !info->nointerp)
{
s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
/* 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))
+ if (!elf_i386_convert_load (ibfd, s, info))
return FALSE;
for (p = ((struct elf_dyn_relocs *)
&& (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"),
+ if ((info->warn_shared_textrel && bfd_link_pic (info))
+ || info->error_textrel)
+ info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
p->sec->owner, p->sec);
}
}
|| *local_tls_type == GOT_TLS_IE_BOTH)
s->size += 4;
}
- if (info->shared
+ if (bfd_link_pic (info)
|| GOT_TLS_GD_ANY_P (*local_tls_type)
|| (*local_tls_type & GOT_TLS_IE))
{
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)
{
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
if (htab->elf.splt->size != 0)
{
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_REL)
- || !add_dynamic_entry (DT_JMPREL, 0))
+ /* DT_PLTGOT is used by prelink even if there is no PLT
+ relocation. */
+ if (!add_dynamic_entry (DT_PLTGOT, 0))
return FALSE;
+
+ if (htab->elf.srelplt->size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_REL)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
+ }
}
if (relocs)
if ((info->flags & DF_TEXTREL) != 0)
{
+ if ((elf_tdata (output_bfd)->has_gnu_symbols
+ & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
+ {
+ info->callbacks->einfo
+ (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
tlsbase = (struct elf_link_hash_entry *)bh;
tlsbase->def_regular = 1;
tlsbase->other = STV_HIDDEN;
+ tlsbase->root.linker_def = 1;
(*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
}
}
struct elf_i386_link_hash_table *htab;
struct bfd_link_hash_entry *base;
- if (!info->executable)
+ if (!bfd_link_executable (info))
return;
htab = elf_i386_hash_table (info);
bfd_vma *local_got_offsets;
bfd_vma *local_tlsdesc_gotents;
Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *wrel;
Elf_Internal_Rela *relend;
bfd_boolean is_vxworks_tls;
unsigned plt_entry_size;
/* We have to handle relocations in vxworks .tls_vars sections
specially, because the dynamic loader is 'weird'. */
is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
- && info->shared
+ && bfd_link_pic (info)
&& !strcmp (input_section->output_section->name,
".tls_vars"));
plt_entry_size = GET_PLT_ENTRY_SIZE (output_bfd);
- rel = relocs;
+ rel = wrel = relocs;
relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
+ for (; rel < relend; wrel++, rel++)
{
unsigned int r_type;
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
|| r_type == R_386_GNU_VTENTRY)
- continue;
+ {
+ if (wrel != rel)
+ *wrel = *rel;
+ continue;
+ }
if ((indx = r_type) >= R_386_standard
&& ((indx = r_type - R_386_ext_offset) - R_386_standard
>= R_386_ext - R_386_standard)
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
- >= R_386_irelative - R_386_ext))
+ >= R_386_ext2 - R_386_ext))
{
(*_bfd_error_handler)
(_("%B: unrecognized relocation (0x%x) in section `%A'"),
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
&& ((sec->flags & SEC_MERGE) != 0
- || (info->relocatable
+ || (bfd_link_relocatable (info)
&& sec->output_offset != 0)))
{
bfd_vma addend;
abort ();
}
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
addend += sec->output_offset;
else
{
break;
}
}
- else if (!info->relocatable
+ else if (!bfd_link_relocatable (info)
&& ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
/* Relocate against local STT_GNU_IFUNC symbol. */
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 && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
+ {
+ _bfd_clear_contents (howto, input_bfd, input_section,
+ contents + rel->r_offset);
+ wrel->r_offset = rel->r_offset;
+ wrel->r_info = 0;
+ wrel->r_addend = 0;
+
+ /* For ld -r, remove relocations in debug sections against
+ sections defined in discarded sections. Not done for
+ eh_frame editing code expects to be present. */
+ if (bfd_link_relocatable (info)
+ && (input_section->flags & SEC_DEBUGGING))
+ wrel--;
+
+ continue;
+ }
- if (info->relocatable)
- continue;
+ if (bfd_link_relocatable (info))
+ {
+ if (wrel != rel)
+ *wrel = *rel;
+ continue;
+ }
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle
it here if it is defined in a non-shared object. */
bfd_vma plt_index;
const char *name;
- if ((input_section->flags & SEC_ALLOC) == 0
- || h->plt.offset == (bfd_vma) -1)
+ if ((input_section->flags & SEC_ALLOC) == 0)
+ {
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING
+ sections because such sections are not SEC_ALLOC and
+ thus ld.so will not process them. */
+ if ((input_section->flags & SEC_DEBUGGING) != 0)
+ continue;
+ abort ();
+ }
+ else if (h->plt.offset == (bfd_vma) -1)
abort ();
/* STT_GNU_IFUNC symbol must go through PLT. */
case R_386_32:
/* Generate dynamic relcoation only when there is a
non-GOT reference in a shared object. */
- if (info->shared && h->non_got_ref)
+ if (bfd_link_pic (info) && h->non_got_ref)
{
Elf_Internal_Rela outrel;
asection *sreloc;
if (h->dynindx == -1
|| h->forced_local
- || info->executable)
+ || bfd_link_executable (info))
{
/* This symbol is resolved locally. */
outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
goto do_relocation;
case R_386_GOT32:
+ case R_386_GOT32X:
base_got = htab->elf.sgot;
off = h->got.offset;
}
}
+ eh = (struct elf_i386_link_hash_entry *) h;
switch (r_type)
{
+ case R_386_GOT32X:
+ /* Avoid optimizing _DYNAMIC since ld.so may use its
+ link-time address. */
+ if (h == htab->elf.hdynamic)
+ goto r_386_got32;
+
+ if (bfd_link_pic (info))
+ {
+ /* It is OK to convert mov to lea and convert indirect
+ branch to direct branch. It is OK to convert adc,
+ add, and, cmp, or, sbb, sub, test, xor only when PIC
+ is false. */
+ unsigned int opcode, addend;
+ addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ if (addend != 0)
+ goto r_386_got32;
+ opcode = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
+ if (opcode != 0x8b && opcode != 0xff)
+ goto r_386_got32;
+ }
+
+ /* Resolve "mov GOT[(%reg)], %reg",
+ "call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
+ and "binop foo@GOT[(%reg)], %reg". */
+ if (h == NULL
+ || (h->plt.offset == (bfd_vma) -1
+ && h->got.offset == (bfd_vma) -1)
+ || htab->elf.sgotplt == NULL)
+ abort ();
+
+ offplt = (htab->elf.sgotplt->output_section->vma
+ + htab->elf.sgotplt->output_offset);
+
+ /* It is relative to .got.plt section. */
+ if (h->got.offset != (bfd_vma) -1)
+ /* Use GOT entry. */
+ relocation = (htab->elf.sgot->output_section->vma
+ + htab->elf.sgot->output_offset
+ + h->got.offset - offplt);
+ else
+ /* Use GOTPLT entry. */
+ relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
+
+ if (!bfd_link_pic (info))
+ {
+ /* If not PIC, add the .got.plt section address for
+ baseless addressing. */
+ unsigned int modrm;
+ modrm = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
+ if ((modrm & 0xc7) == 0x5)
+ relocation += offplt;
+ }
+
+ unresolved_reloc = FALSE;
+ break;
+
case R_386_GOT32:
+r_386_got32:
/* Relocation is to the entry for this symbol in the global
offset table. */
if (htab->elf.sgot == NULL)
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
- || (info->shared
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
+ bfd_link_pic (info),
+ h)
+ || (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
|| (ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
bfd_put_32 (output_bfd, relocation,
htab->elf.sgot->contents + off);
- if (info->shared)
+ if (bfd_link_pic (info))
{
asection *s;
Elf_Internal_Rela outrel;
/* Relocation is relative to the start of the global offset
table. */
- /* Check to make sure it isn't a protected function symbol
- for shared library since it may not be local when used
- as function address. We also need to make sure that a
- symbol is defined locally. */
- if (info->shared && h)
+ /* Check to make sure it isn't a protected function or data
+ symbol for shared library since it may not be local when
+ used as function address or with copy relocation. We also
+ need to make sure that a symbol is referenced locally. */
+ if (!bfd_link_executable (info) && h)
{
if (!h->def_regular)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
- else if (!info->executable
- && !SYMBOLIC_BIND (info, h)
- && h->type == STT_FUNC
+ else if (!SYMBOL_REFERENCES_LOCAL (info, h)
+ && (h->type == STT_FUNC
+ || h->type == STT_OBJECT)
&& ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
{
(*_bfd_error_handler)
- (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
- input_bfd, h->root.root.string);
+ (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
+ input_bfd,
+ h->type == STT_FUNC ? "function" : "data",
+ h->root.root.string);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (h == NULL)
break;
- if (h->plt.offset == (bfd_vma) -1
+ 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;
|| is_vxworks_tls)
break;
- if ((info->shared
+ /* Copy dynamic function pointer relocations. */
+ if ((bfd_link_pic (info)
&& (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_SIZE32)
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& h != NULL
&& h->dynindx != -1
- && !h->non_got_ref
+ && (!h->non_got_ref || eh->func_pointer_refcount > 0)
&& ((h->def_dynamic
&& !h->def_regular)
|| h->root.type == bfd_link_hash_undefweak
else if (h != NULL
&& h->dynindx != -1
&& (r_type == R_386_PC32
- || !info->shared
+ || !bfd_link_pic (info)
|| !SYMBOLIC_BIND (info, h)
|| !h->def_regular))
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
break;
case R_386_TLS_IE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
{
Elf_Internal_Rela outrel;
asection *sreloc;
contents + roff);
/* Skip R_386_PC32/R_386_PLT32. */
rel++;
+ wrel++;
continue;
}
else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
contents + roff + 8);
/* Skip R_386_PLT32. */
rel++;
+ wrel++;
continue;
}
else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
"\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
/* Skip R_386_PC32/R_386_PLT32. */
rel++;
+ wrel++;
continue;
}
break;
case R_386_TLS_LDO_32:
- if (!info->executable || (input_section->flags & SEC_CODE) == 0)
+ if (!bfd_link_executable (info)
+ || (input_section->flags & SEC_CODE) == 0)
relocation -= elf_i386_dtpoff_base (info);
else
/* When converting LDO to LE, we must negate. */
case R_386_TLS_LE_32:
case R_386_TLS_LE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
{
Elf_Internal_Rela outrel;
asection *sreloc;
return FALSE;
}
}
+
+ if (wrel != rel)
+ *wrel = *rel;
+ }
+
+ if (wrel != rel)
+ {
+ Elf_Internal_Shdr *rel_hdr;
+ size_t deleted = rel - wrel;
+
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
+ rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
+ if (rel_hdr->sh_size == 0)
+ {
+ /* It is too late to remove an empty reloc section. Leave
+ one NONE reloc.
+ ??? What is wrong with an empty section??? */
+ rel_hdr->sh_size = rel_hdr->sh_entsize;
+ deleted -= 1;
+ }
+ rel_hdr = _bfd_elf_single_rel_hdr (input_section);
+ rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
+ input_section->reloc_count -= deleted;
}
return TRUE;
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;
it up. */
if ((h->dynindx == -1
- && !((h->forced_local || info->executable)
+ && !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
|| plt == NULL
}
/* Fill in the entry in the procedure linkage table. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
{
memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
abed->plt->plt_entry_size);
s = ((h->plt.offset - abed->plt->plt_entry_size)
/ abed->plt->plt_entry_size);
/* K: Number of relocations for PLTResolve. */
- if (info->shared)
+ if (bfd_link_pic (info))
k = PLTRESOLVE_RELOCS_SHLIB;
else
k = PLTRESOLVE_RELOCS;
+ gotplt->output_offset
+ got_offset);
if (h->dynindx == -1
- || ((info->executable
+ || ((bfd_link_executable (info)
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
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;
- if (!h->def_regular)
+ /* 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 (got_offset == (bfd_vma) -1
+ || plt == NULL
+ || got == NULL
+ || gotplt == NULL)
+ abort ();
+
+ /* Fill in the entry in the GOT procedure linkage table. */
+ if (! bfd_link_pic (info))
{
- /* 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
if (h->def_regular
&& h->type == STT_GNU_IFUNC)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* Generate R_386_GLOB_DAT. */
goto do_glob_dat;
return TRUE;
}
}
- else if (info->shared
+ else if (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
{
BFD_ASSERT((h->got.offset & 1) != 0);
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,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
{
+ bfd *abfd = info->output_bfd;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ if (htab->dynsym != NULL
+ && htab->dynsym->contents != NULL)
+ {
+ /* Check relocation against STT_GNU_IFUNC symbol if there are
+ dynamic symbols. */
+ unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
+ Elf_Internal_Sym sym;
+ if (!bed->s->swap_symbol_in (abfd,
+ (htab->dynsym->contents
+ + r_symndx * sizeof (Elf32_External_Sym)),
+ 0, &sym))
+ abort ();
+
+ if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
+ return reloc_class_ifunc;
+ }
+
switch (ELF32_R_TYPE (rela->r_info))
{
case R_386_RELATIVE:
/* Fill in the first entry in the procedure linkage table. */
if (htab->elf.splt && htab->elf.splt->size > 0)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
abed->plt->plt0_entry_size);
->this_hdr.sh_entsize = 4;
/* Correct the .rel.plt.unloaded relocations. */
- if (abed->is_vxworks && !info->shared)
+ if (abed->is_vxworks && !bfd_link_pic (info))
{
int num_plts = (htab->elf.splt->size
/ abed->plt->plt_entry_size) - 1;
unsigned char *p;
p = htab->srelplt2->contents;
- if (info->shared)
+ if (bfd_link_pic (info))
p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
else
p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
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 an array of PLT entry symbol values. */
-static bfd_vma
-elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
- const arelent *rel ATTRIBUTE_UNUSED)
+static bfd_vma *
+elf_i386_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
+ asection *relplt)
+{
+ bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
+ arelent *p;
+ long count, i;
+ bfd_vma *plt_sym_val;
+ bfd_vma plt_offset;
+ bfd_byte *plt_contents;
+ const struct elf_i386_backend_data *bed
+ = get_elf_i386_backend_data (abfd);
+ Elf_Internal_Shdr *hdr;
+
+ /* Get the .plt section contents. */
+ plt_contents = (bfd_byte *) bfd_malloc (plt->size);
+ if (plt_contents == NULL)
+ return NULL;
+ if (!bfd_get_section_contents (abfd, (asection *) plt,
+ plt_contents, 0, plt->size))
+ {
+bad_return:
+ free (plt_contents);
+ return NULL;
+ }
+
+ slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
+ if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
+ goto bad_return;
+
+ hdr = &elf_section_data (relplt)->this_hdr;
+ count = relplt->size / hdr->sh_entsize;
+
+ plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
+ if (plt_sym_val == NULL)
+ goto bad_return;
+
+ for (i = 0; i < count; i++)
+ plt_sym_val[i] = -1;
+
+ plt_offset = bed->plt->plt_entry_size;
+ p = relplt->relocation;
+ for (i = 0; i < count; i++, p++)
+ {
+ long reloc_index;
+
+ /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
+ if (p->howto == NULL)
+ continue;
+
+ if (p->howto->type != R_386_JUMP_SLOT
+ && p->howto->type != R_386_IRELATIVE)
+ continue;
+
+ reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
+ + bed->plt->plt_reloc_offset));
+ reloc_index /= sizeof (Elf32_External_Rel);
+ if (reloc_index >= count)
+ abort ();
+ plt_sym_val[reloc_index] = plt->vma + plt_offset;
+ plt_offset += bed->plt->plt_entry_size;
+
+ /* PR binutils/18437: Skip extra relocations in the .rel.plt
+ section. */
+ if (plt_offset >= plt->size)
+ break;
+ }
+
+ free (plt_contents);
+
+ return plt_sym_val;
+}
+
+/* Similar to _bfd_elf_get_synthetic_symtab. */
+
+static long
+elf_i386_get_synthetic_symtab (bfd *abfd,
+ long symcount,
+ asymbol **syms,
+ long dynsymcount,
+ asymbol **dynsyms,
+ asymbol **ret)
{
- return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
+ asection *plt = bfd_get_section_by_name (abfd, ".plt");
+ return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
+ dynsymcount, dynsyms, ret,
+ plt,
+ elf_i386_get_plt_sym_val);
}
/* 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))
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
+ if (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
+ |= elf_gnu_symbol_unique;
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 elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
#define elf_backend_plt_alignment 4
+#define elf_backend_extern_protected_data 1
/* Support RELA for objdump of prelink objects. */
#define elf_info_to_howto elf_i386_info_to_howto_rel
#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 bfd_elf32_get_synthetic_symtab elf_i386_get_synthetic_symtab
#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
#define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
#define elf_backend_always_size_sections elf_i386_always_size_sections
#define elf_backend_omit_section_dynsym \
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
-#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"
+#undef elf_backend_post_process_headers
+
/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
objects won't be recognized. */
#undef ELF_OSABI
#include "elf32-target.h"
+/* Intel MCU support. */
+
+static bfd_boolean
+elf32_iamcu_elf_object_p (bfd *abfd)
+{
+ /* Set the right machine number for an IAMCU elf32 file. */
+ bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
+ return TRUE;
+}
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM iamcu_elf32_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-iamcu"
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_iamcu
+
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_IAMCU
+
+#undef ELF_OSABI
+
+#undef elf32_bed
+#define elf32_bed elf32_iamcu_bed
+
+#undef elf_backend_object_p
+#define elf_backend_object_p elf32_iamcu_elf_object_p
+
+#undef elf_backend_static_tls_alignment
+
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 0
+
+#include "elf32-target.h"
+
+/* Restore defaults. */
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_i386
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_386
+
/* 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. */
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
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