#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
static reloc_howto_type *elf_i386_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void elf_i386_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static void elf_i386_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static bfd_boolean elf_i386_is_local_label_name
PARAMS ((bfd *, const char *));
static bfd_boolean elf_i386_grok_prstatus
PARAMS ((bfd *abfd, Elf_Internal_Note *note));
static bfd_boolean elf_i386_grok_psinfo
PARAMS ((bfd *abfd, Elf_Internal_Note *note));
static struct bfd_hash_entry *link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static struct bfd_link_hash_table *elf_i386_link_hash_table_create
PARAMS ((bfd *));
static bfd_boolean create_got_section
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_boolean elf_i386_create_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static void elf_i386_copy_indirect_symbol
PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
struct elf_link_hash_entry *));
static int elf_i386_tls_transition
PARAMS ((struct bfd_link_info *, int, int));
static bfd_boolean elf_i386_mkobject
PARAMS ((bfd *));
static bfd_boolean elf_i386_object_p
PARAMS ((bfd *));
static bfd_boolean elf_i386_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static asection *elf_i386_gc_mark_hook
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *));
static bfd_boolean elf_i386_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static bfd_boolean elf_i386_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
static bfd_boolean allocate_dynrelocs
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean readonly_dynrelocs
PARAMS ((struct elf_link_hash_entry *, PTR));
static bfd_boolean elf_i386_fake_sections
PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
static bfd_boolean elf_i386_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
static bfd_vma dtpoff_base
PARAMS ((struct bfd_link_info *));
static bfd_vma tpoff
PARAMS ((struct bfd_link_info *, bfd_vma));
static bfd_boolean elf_i386_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static bfd_boolean elf_i386_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
static enum elf_reloc_type_class elf_i386_reloc_type_class
PARAMS ((const Elf_Internal_Rela *));
static bfd_boolean elf_i386_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
#define USE_REL 1
#include "elf/i386.h"
static reloc_howto_type elf_howto_table[]=
{
HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_NONE",
TRUE, 0x00000000, 0x00000000, FALSE),
HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_PC32",
TRUE, 0xffffffff, 0xffffffff, TRUE),
HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_GOT32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_PLT32",
TRUE, 0xffffffff, 0xffffffff, TRUE),
HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_COPY",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_GLOB_DAT",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_RELATIVE",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_GOTOFF",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_GOTPC",
TRUE, 0xffffffff, 0xffffffff, TRUE),
#define R_386_standard ((unsigned int) R_386_GOTPC + 1)
#define R_386_ext_offset ((unsigned int) R_386_TLS_TPOFF - R_386_standard)
HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_IE",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LE",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_GD",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LDM",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_16",
TRUE, 0xffff, 0xffff, FALSE),
HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_PC16",
TRUE, 0xffff, 0xffff, TRUE),
HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_8",
TRUE, 0xff, 0xff, FALSE),
HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
bfd_elf_generic_reloc, "R_386_PC8",
TRUE, 0xff, 0xff, TRUE),
#define R_386_ext ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset)
#define R_386_tls_offset ((unsigned int) R_386_TLS_LDO_32 - R_386_ext)
HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_IE_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LE_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
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),
#define R_386_tls ((unsigned int) R_386_TLS_TPOFF32 + 1 - R_386_tls_offset)
#define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_tls)
HOWTO (R_386_GNU_VTINHERIT,
0,
2,
0,
FALSE,
0,
complain_overflow_dont,
NULL,
"R_386_GNU_VTINHERIT",
FALSE,
0,
0,
FALSE),
HOWTO (R_386_GNU_VTENTRY,
0,
2,
0,
FALSE,
0,
complain_overflow_dont,
_bfd_elf_rel_vtable_reloc_fn,
"R_386_GNU_VTENTRY",
FALSE,
0,
0,
FALSE)
#define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
};
#ifdef DEBUG_GEN_RELOC
#define TRACE(str) fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
#else
#define TRACE(str)
#endif
static reloc_howto_type *
elf_i386_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
switch (code)
{
case BFD_RELOC_NONE:
TRACE ("BFD_RELOC_NONE");
return &elf_howto_table[(unsigned int) R_386_NONE ];
case BFD_RELOC_32:
TRACE ("BFD_RELOC_32");
return &elf_howto_table[(unsigned int) R_386_32 ];
case BFD_RELOC_CTOR:
TRACE ("BFD_RELOC_CTOR");
return &elf_howto_table[(unsigned int) R_386_32 ];
case BFD_RELOC_32_PCREL:
TRACE ("BFD_RELOC_PC32");
return &elf_howto_table[(unsigned int) R_386_PC32 ];
case BFD_RELOC_386_GOT32:
TRACE ("BFD_RELOC_386_GOT32");
return &elf_howto_table[(unsigned int) R_386_GOT32 ];
case BFD_RELOC_386_PLT32:
TRACE ("BFD_RELOC_386_PLT32");
return &elf_howto_table[(unsigned int) R_386_PLT32 ];
case BFD_RELOC_386_COPY:
TRACE ("BFD_RELOC_386_COPY");
return &elf_howto_table[(unsigned int) R_386_COPY ];
case BFD_RELOC_386_GLOB_DAT:
TRACE ("BFD_RELOC_386_GLOB_DAT");
return &elf_howto_table[(unsigned int) R_386_GLOB_DAT ];
case BFD_RELOC_386_JUMP_SLOT:
TRACE ("BFD_RELOC_386_JUMP_SLOT");
return &elf_howto_table[(unsigned int) R_386_JUMP_SLOT ];
case BFD_RELOC_386_RELATIVE:
TRACE ("BFD_RELOC_386_RELATIVE");
return &elf_howto_table[(unsigned int) R_386_RELATIVE ];
case BFD_RELOC_386_GOTOFF:
TRACE ("BFD_RELOC_386_GOTOFF");
return &elf_howto_table[(unsigned int) R_386_GOTOFF ];
case BFD_RELOC_386_GOTPC:
TRACE ("BFD_RELOC_386_GOTPC");
return &elf_howto_table[(unsigned int) R_386_GOTPC ];
case BFD_RELOC_386_TLS_TPOFF:
TRACE ("BFD_RELOC_386_TLS_TPOFF");
return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF - R_386_ext_offset];
case BFD_RELOC_386_TLS_IE:
TRACE ("BFD_RELOC_386_TLS_IE");
return &elf_howto_table[(unsigned int) R_386_TLS_IE - R_386_ext_offset];
case BFD_RELOC_386_TLS_GOTIE:
TRACE ("BFD_RELOC_386_TLS_GOTIE");
return &elf_howto_table[(unsigned int) R_386_TLS_GOTIE - R_386_ext_offset];
case BFD_RELOC_386_TLS_LE:
TRACE ("BFD_RELOC_386_TLS_LE");
return &elf_howto_table[(unsigned int) R_386_TLS_LE - R_386_ext_offset];
case BFD_RELOC_386_TLS_GD:
TRACE ("BFD_RELOC_386_TLS_GD");
return &elf_howto_table[(unsigned int) R_386_TLS_GD - R_386_ext_offset];
case BFD_RELOC_386_TLS_LDM:
TRACE ("BFD_RELOC_386_TLS_LDM");
return &elf_howto_table[(unsigned int) R_386_TLS_LDM - R_386_ext_offset];
case BFD_RELOC_16:
TRACE ("BFD_RELOC_16");
return &elf_howto_table[(unsigned int) R_386_16 - R_386_ext_offset];
case BFD_RELOC_16_PCREL:
TRACE ("BFD_RELOC_16_PCREL");
return &elf_howto_table[(unsigned int) R_386_PC16 - R_386_ext_offset];
case BFD_RELOC_8:
TRACE ("BFD_RELOC_8");
return &elf_howto_table[(unsigned int) R_386_8 - R_386_ext_offset];
case BFD_RELOC_8_PCREL:
TRACE ("BFD_RELOC_8_PCREL");
return &elf_howto_table[(unsigned int) R_386_PC8 - R_386_ext_offset];
case BFD_RELOC_386_TLS_LDO_32:
TRACE ("BFD_RELOC_386_TLS_LDO_32");
return &elf_howto_table[(unsigned int) R_386_TLS_LDO_32 - R_386_tls_offset];
case BFD_RELOC_386_TLS_IE_32:
TRACE ("BFD_RELOC_386_TLS_IE_32");
return &elf_howto_table[(unsigned int) R_386_TLS_IE_32 - R_386_tls_offset];
case BFD_RELOC_386_TLS_LE_32:
TRACE ("BFD_RELOC_386_TLS_LE_32");
return &elf_howto_table[(unsigned int) R_386_TLS_LE_32 - R_386_tls_offset];
case BFD_RELOC_386_TLS_DTPMOD32:
TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
return &elf_howto_table[(unsigned int) R_386_TLS_DTPMOD32 - R_386_tls_offset];
case BFD_RELOC_386_TLS_DTPOFF32:
TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
return &elf_howto_table[(unsigned int) R_386_TLS_DTPOFF32 - R_386_tls_offset];
case BFD_RELOC_386_TLS_TPOFF32:
TRACE ("BFD_RELOC_386_TLS_TPOFF32");
return &elf_howto_table[(unsigned int) R_386_TLS_TPOFF32 - R_386_tls_offset];
case BFD_RELOC_VTABLE_INHERIT:
TRACE ("BFD_RELOC_VTABLE_INHERIT");
return &elf_howto_table[(unsigned int) R_386_GNU_VTINHERIT
- R_386_vt_offset];
case BFD_RELOC_VTABLE_ENTRY:
TRACE ("BFD_RELOC_VTABLE_ENTRY");
return &elf_howto_table[(unsigned int) R_386_GNU_VTENTRY
- R_386_vt_offset];
default:
break;
}
TRACE ("Unknown");
return 0;
}
static void
elf_i386_info_to_howto (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr ATTRIBUTE_UNUSED;
Elf_Internal_Rela *dst ATTRIBUTE_UNUSED;
{
abort ();
}
static void
elf_i386_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
unsigned int indx;
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_tls - R_386_ext)
&& ((indx = r_type - R_386_vt_offset) - R_386_tls
>= R_386_vt - R_386_tls))
{
(*_bfd_error_handler) (_("%s: invalid relocation type %d"),
bfd_archive_filename (abfd), (int) r_type);
indx = (unsigned int) R_386_NONE;
}
cache_ptr->howto = &elf_howto_table[indx];
}
static bfd_boolean
elf_i386_is_local_label_name (abfd, name)
bfd *abfd;
const char *name;
{
if (name[0] == '.' && name[1] == 'X')
return TRUE;
return _bfd_elf_is_local_label_name (abfd, name);
}
static bfd_boolean
elf_i386_grok_prstatus (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
int offset;
size_t raw_size;
switch (note->descsz)
{
default:
return FALSE;
case 144:
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
offset = 72;
raw_size = 68;
break;
}
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
raw_size, note->descpos + offset);
}
static bfd_boolean
elf_i386_grok_psinfo (abfd, note)
bfd *abfd;
Elf_Internal_Note *note;
{
switch (note->descsz)
{
default:
return FALSE;
case 124:
elf_tdata (abfd)->core_program
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
elf_tdata (abfd)->core_command
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
}
{
char *command = elf_tdata (abfd)->core_command;
int n = strlen (command);
if (0 < n && command[n - 1] == ' ')
command[n - 1] = '\0';
}
return TRUE;
}
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
#define PLT_ENTRY_SIZE 16
static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] =
{
0xff, 0x35,
0, 0, 0, 0,
0xff, 0x25,
0, 0, 0, 0,
0, 0, 0, 0
};
static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
{
0xff, 0x25,
0, 0, 0, 0,
0x68,
0, 0, 0, 0,
0xe9,
0, 0, 0, 0
};
static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] =
{
0xff, 0xb3, 4, 0, 0, 0,
0xff, 0xa3, 8, 0, 0, 0,
0, 0, 0, 0
};
static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
{
0xff, 0xa3,
0, 0, 0, 0,
0x68,
0, 0, 0, 0,
0xe9,
0, 0, 0, 0
};
struct elf_i386_dyn_relocs
{
struct elf_i386_dyn_relocs *next;
asection *sec;
bfd_size_type count;
bfd_size_type pc_count;
};
struct elf_i386_link_hash_entry
{
struct elf_link_hash_entry elf;
struct elf_i386_dyn_relocs *dyn_relocs;
#define GOT_UNKNOWN 0
#define GOT_NORMAL 1
#define GOT_TLS_GD 2
#define GOT_TLS_IE 4
#define GOT_TLS_IE_POS 5
#define GOT_TLS_IE_NEG 6
#define GOT_TLS_IE_BOTH 7
unsigned char tls_type;
};
#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
struct elf_i386_obj_tdata
{
struct elf_obj_tdata root;
char *local_got_tls_type;
};
#define elf_i386_tdata(abfd) \
((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
#define elf_i386_local_got_tls_type(abfd) \
(elf_i386_tdata (abfd)->local_got_tls_type)
static bfd_boolean
elf_i386_mkobject (abfd)
bfd *abfd;
{
bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
if (abfd->tdata.any == NULL)
return FALSE;
return TRUE;
}
static bfd_boolean
elf_i386_object_p (abfd)
bfd *abfd;
{
struct elf_i386_obj_tdata *new_tdata;
bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
new_tdata = bfd_zalloc (abfd, amt);
if (new_tdata == NULL)
return FALSE;
new_tdata->root = *abfd->tdata.elf_obj_data;
abfd->tdata.any = new_tdata;
return TRUE;
}
struct elf_i386_link_hash_table
{
struct elf_link_hash_table elf;
asection *sgot;
asection *sgotplt;
asection *srelgot;
asection *splt;
asection *srelplt;
asection *sdynbss;
asection *srelbss;
union {
bfd_signed_vma refcount;
bfd_vma offset;
} tls_ldm_got;
struct sym_sec_cache sym_sec;
};
#define elf_i386_hash_table(p) \
((struct elf_i386_link_hash_table *) ((p)->hash))
static struct bfd_hash_entry *
link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
{
if (entry == NULL)
{
entry = bfd_hash_allocate (table,
sizeof (struct elf_i386_link_hash_entry));
if (entry == NULL)
return entry;
}
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
if (entry != NULL)
{
struct elf_i386_link_hash_entry *eh;
eh = (struct elf_i386_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
}
return entry;
}
static struct bfd_link_hash_table *
elf_i386_link_hash_table_create (abfd)
bfd *abfd;
{
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);
if (ret == NULL)
return NULL;
if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
{
free (ret);
return NULL;
}
ret->sgot = NULL;
ret->sgotplt = NULL;
ret->srelgot = NULL;
ret->splt = NULL;
ret->srelplt = NULL;
ret->sdynbss = NULL;
ret->srelbss = NULL;
ret->tls_ldm_got.refcount = 0;
ret->sym_sec.abfd = NULL;
return &ret->elf.root;
}
static bfd_boolean
create_got_section (dynobj, info)
bfd *dynobj;
struct bfd_link_info *info;
{
struct elf_i386_link_hash_table *htab;
if (! _bfd_elf_create_got_section (dynobj, info))
return FALSE;
htab = elf_i386_hash_table (info);
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
if (!htab->sgot || !htab->sgotplt)
abort ();
htab->srelgot = bfd_make_section (dynobj, ".rel.got");
if (htab->srelgot == NULL
|| ! bfd_set_section_flags (dynobj, htab->srelgot,
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
| SEC_IN_MEMORY | SEC_LINKER_CREATED
| SEC_READONLY))
|| ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
return FALSE;
return TRUE;
}
static bfd_boolean
elf_i386_create_dynamic_sections (dynobj, info)
bfd *dynobj;
struct bfd_link_info *info;
{
struct elf_i386_link_hash_table *htab;
htab = elf_i386_hash_table (info);
if (!htab->sgot && !create_got_section (dynobj, info))
return FALSE;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
htab->splt = bfd_get_section_by_name (dynobj, ".plt");
htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
if (!info->shared)
htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
if (!htab->splt || !htab->srelplt || !htab->sdynbss
|| (!info->shared && !htab->srelbss))
abort ();
return TRUE;
}
static void
elf_i386_copy_indirect_symbol (bed, dir, ind)
struct elf_backend_data *bed;
struct elf_link_hash_entry *dir, *ind;
{
struct elf_i386_link_hash_entry *edir, *eind;
edir = (struct elf_i386_link_hash_entry *) dir;
eind = (struct elf_i386_link_hash_entry *) ind;
if (eind->dyn_relocs != NULL)
{
if (edir->dyn_relocs != NULL)
{
struct elf_i386_dyn_relocs **pp;
struct elf_i386_dyn_relocs *p;
if (ind->root.type == bfd_link_hash_indirect)
abort ();
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
{
struct elf_i386_dyn_relocs *q;
for (q = edir->dyn_relocs; q != NULL; q = q->next)
if (q->sec == p->sec)
{
q->pc_count += p->pc_count;
q->count += p->count;
*pp = p->next;
break;
}
if (q == NULL)
pp = &p->next;
}
*pp = edir->dyn_relocs;
}
edir->dyn_relocs = eind->dyn_relocs;
eind->dyn_relocs = NULL;
}
if (ind->root.type == bfd_link_hash_indirect
&& dir->got.refcount <= 0)
{
edir->tls_type = eind->tls_type;
eind->tls_type = GOT_UNKNOWN;
}
_bfd_elf_link_hash_copy_indirect (bed, dir, ind);
}
static int
elf_i386_tls_transition (info, r_type, is_local)
struct bfd_link_info *info;
int r_type;
int is_local;
{
if (info->shared)
return r_type;
switch (r_type)
{
case R_386_TLS_GD:
case R_386_TLS_IE_32:
if (is_local)
return R_386_TLS_LE_32;
return R_386_TLS_IE_32;
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
if (is_local)
return R_386_TLS_LE_32;
return r_type;
case R_386_TLS_LDM:
return R_386_TLS_LE_32;
}
return r_type;
}
static bfd_boolean
elf_i386_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
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;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
if (info->relocateable)
return TRUE;
htab = elf_i386_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
(*_bfd_error_handler) (_("%s: bad symbol index: %d"),
bfd_archive_filename (abfd),
r_symndx);
return FALSE;
}
if (r_symndx < symtab_hdr->sh_info)
h = NULL;
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
r_type = elf_i386_tls_transition (info, r_type, h == NULL);
switch (r_type)
{
case R_386_TLS_LDM:
htab->tls_ldm_got.refcount += 1;
goto create_got;
case R_386_PLT32:
if (h == NULL)
continue;
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
h->plt.refcount += 1;
break;
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
if (info->shared)
info->flags |= DF_STATIC_TLS;
case R_386_GOT32:
case R_386_TLS_GD:
{
int tls_type, old_tls_type;
switch (r_type)
{
default:
case R_386_GOT32: tls_type = GOT_NORMAL; break;
case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
case R_386_TLS_IE_32:
if (ELF32_R_TYPE (rel->r_info) == r_type)
tls_type = GOT_TLS_IE_NEG;
else
tls_type = GOT_TLS_IE;
break;
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
tls_type = GOT_TLS_IE_POS; break;
}
if (h != NULL)
{
h->got.refcount += 1;
old_tls_type = elf_i386_hash_entry(h)->tls_type;
}
else
{
bfd_signed_vma *local_got_refcounts;
local_got_refcounts = elf_local_got_refcounts (abfd);
if (local_got_refcounts == NULL)
{
bfd_size_type size;
size = symtab_hdr->sh_info;
size *= (sizeof (bfd_signed_vma) + sizeof(char));
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;
elf_i386_local_got_tls_type (abfd)
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
}
local_got_refcounts[r_symndx] += 1;
old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
}
if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
tls_type |= old_tls_type;
else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
&& (old_tls_type != GOT_TLS_GD
|| (tls_type & GOT_TLS_IE) == 0))
{
if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD)
tls_type = old_tls_type;
else
{
(*_bfd_error_handler)
(_("%s: `%s' accessed both as normal and thread local symbol"),
bfd_archive_filename (abfd),
h ? h->root.root.string : "<local>");
return FALSE;
}
}
if (old_tls_type != tls_type)
{
if (h != NULL)
elf_i386_hash_entry (h)->tls_type = tls_type;
else
elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
case R_386_GOTOFF:
case R_386_GOTPC:
create_got:
if (htab->sgot == NULL)
{
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!create_got_section (htab->elf.dynobj, info))
return FALSE;
}
if (r_type != R_386_TLS_IE)
break;
case R_386_TLS_LE_32:
case R_386_TLS_LE:
if (!info->shared)
break;
info->flags |= DF_STATIC_TLS;
case R_386_32:
case R_386_PC32:
if (h != NULL && !info->shared)
{
h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
h->plt.refcount += 1;
}
if ((info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& (r_type != R_386_PC32
|| (h != NULL
&& (! info->symbolic
|| h->root.type == bfd_link_hash_defweak
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|| (!info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
{
struct elf_i386_dyn_relocs *p;
struct elf_i386_dyn_relocs **head;
if (sreloc == NULL)
{
const char *name;
bfd *dynobj;
unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
if (name == NULL)
return FALSE;
if (strncmp (name, ".rel", 4) != 0
|| strcmp (bfd_get_section_name (abfd, sec),
name + 4) != 0)
{
(*_bfd_error_handler)
(_("%s: bad relocation section name `%s\'"),
bfd_archive_filename (abfd), name);
}
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
dynobj = htab->elf.dynobj;
sreloc = bfd_get_section_by_name (dynobj, name);
if (sreloc == NULL)
{
flagword flags;
sreloc = bfd_make_section (dynobj, name);
flags = (SEC_HAS_CONTENTS | SEC_READONLY
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
if ((sec->flags & SEC_ALLOC) != 0)
flags |= SEC_ALLOC | SEC_LOAD;
if (sreloc == NULL
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
return FALSE;
}
elf_section_data (sec)->sreloc = sreloc;
}
if (h != NULL)
{
head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
}
else
{
asection *s;
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
sec, r_symndx);
if (s == NULL)
return FALSE;
head = ((struct elf_i386_dyn_relocs **)
&elf_section_data (s)->local_dynrel);
}
p = *head;
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
p = ((struct elf_i386_dyn_relocs *)
bfd_alloc (htab->elf.dynobj, amt));
if (p == NULL)
return FALSE;
p->next = *head;
*head = p;
p->sec = sec;
p->count = 0;
p->pc_count = 0;
}
p->count += 1;
if (r_type == R_386_PC32)
p->pc_count += 1;
}
break;
case R_386_GNU_VTINHERIT:
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
case R_386_GNU_VTENTRY:
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
return FALSE;
break;
default:
break;
}
}
return TRUE;
}
static asection *
elf_i386_gc_mark_hook (sec, info, rel, h, sym)
asection *sec;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
if (h != NULL)
{
switch (ELF32_R_TYPE (rel->r_info))
{
case R_386_GNU_VTINHERIT:
case R_386_GNU_VTENTRY:
break;
default:
switch (h->root.type)
{
case bfd_link_hash_defined:
case bfd_link_hash_defweak:
return h->root.u.def.section;
case bfd_link_hash_common:
return h->root.u.c.p->section;
default:
break;
}
}
}
else
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
return NULL;
}
static bfd_boolean
elf_i386_gc_sweep_hook (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
unsigned long r_symndx;
int r_type;
struct elf_link_hash_entry *h;
elf_section_data (sec)->local_dynrel = NULL;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
local_got_refcounts = elf_local_got_refcounts (abfd);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
switch ((r_type = elf_i386_tls_transition (info,
ELF32_R_TYPE (rel->r_info),
ELF32_R_SYM (rel->r_info)
>= symtab_hdr->sh_info)))
{
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;
break;
case R_386_TLS_GD:
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
case R_386_GOT32:
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
if (h->got.refcount > 0)
h->got.refcount -= 1;
}
else if (local_got_refcounts != NULL)
{
if (local_got_refcounts[r_symndx] > 0)
local_got_refcounts[r_symndx] -= 1;
}
if (r_type != R_386_TLS_IE)
break;
case R_386_TLS_LE_32:
case R_386_TLS_LE:
if (!info->shared)
break;
case R_386_32:
case R_386_PC32:
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
struct elf_i386_link_hash_entry *eh;
struct elf_i386_dyn_relocs **pp;
struct elf_i386_dyn_relocs *p;
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
if (!info->shared && h->plt.refcount > 0)
h->plt.refcount -= 1;
eh = (struct elf_i386_link_hash_entry *) h;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
if (p->sec == sec)
{
if (ELF32_R_TYPE (rel->r_info) == R_386_PC32)
p->pc_count -= 1;
p->count -= 1;
if (p->count == 0)
*pp = p->next;
break;
}
}
break;
case R_386_PLT32:
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
if (h->plt.refcount > 0)
h->plt.refcount -= 1;
}
break;
default:
break;
}
return TRUE;
}
static bfd_boolean
elf_i386_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
{
struct elf_i386_link_hash_table *htab;
struct elf_i386_link_hash_entry * eh;
struct elf_i386_dyn_relocs *p;
asection *s;
unsigned int power_of_two;
if (h->type == STT_FUNC
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
{
if (h->plt.refcount <= 0
|| (! info->shared
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
&& h->root.type != bfd_link_hash_undefweak
&& h->root.type != bfd_link_hash_undefined))
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
}
return TRUE;
}
else
h->plt.offset = (bfd_vma) -1;
if (h->weakdef != NULL)
{
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|| h->weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->weakdef->root.u.def.section;
h->root.u.def.value = h->weakdef->root.u.def.value;
return TRUE;
}
if (info->shared)
return TRUE;
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
return TRUE;
if (info->nocopyreloc)
{
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
return TRUE;
}
eh = (struct elf_i386_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
s = p->sec->output_section;
if (s != NULL && (s->flags & SEC_READONLY) != 0)
break;
}
if (p == NULL)
{
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
return TRUE;
}
htab = elf_i386_hash_table (info);
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
htab->srelbss->_raw_size += sizeof (Elf32_External_Rel);
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
}
power_of_two = bfd_log2 (h->size);
if (power_of_two > 3)
power_of_two = 3;
s = htab->sdynbss;
s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
{
if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
return FALSE;
}
h->root.u.def.section = s;
h->root.u.def.value = s->_raw_size;
s->_raw_size += h->size;
return TRUE;
}
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
((DYN) \
&& ((INFO)->shared \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
&& ((H)->dynindx != -1 \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
static bfd_boolean
allocate_dynrelocs (h, inf)
struct elf_link_hash_entry *h;
PTR inf;
{
struct bfd_link_info *info;
struct elf_i386_link_hash_table *htab;
struct elf_i386_link_hash_entry *eh;
struct elf_i386_dyn_relocs *p;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
info = (struct bfd_link_info *) inf;
htab = elf_i386_hash_table (info);
if (htab->elf.dynamic_sections_created
&& h->plt.refcount > 0)
{
if (h->dynindx == -1
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return FALSE;
}
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
{
asection *s = htab->splt;
if (s->_raw_size == 0)
s->_raw_size += PLT_ENTRY_SIZE;
h->plt.offset = s->_raw_size;
if (! info->shared
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
h->root.u.def.section = s;
h->root.u.def.value = h->plt.offset;
}
s->_raw_size += PLT_ENTRY_SIZE;
htab->sgotplt->_raw_size += 4;
htab->srelplt->_raw_size += sizeof (Elf32_External_Rel);
}
else
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
}
}
else
{
h->plt.offset = (bfd_vma) -1;
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
}
if (h->got.refcount > 0
&& !info->shared
&& h->dynindx == -1
&& (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
h->got.offset = (bfd_vma) -1;
else if (h->got.refcount > 0)
{
asection *s;
bfd_boolean dyn;
int tls_type = elf_i386_hash_entry(h)->tls_type;
if (h->dynindx == -1
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return FALSE;
}
s = htab->sgot;
h->got.offset = s->_raw_size;
s->_raw_size += 4;
if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH)
s->_raw_size += 4;
dyn = htab->elf.dynamic_sections_created;
if (tls_type == GOT_TLS_IE_BOTH)
htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel);
else if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
|| (tls_type & GOT_TLS_IE))
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
else if (tls_type == GOT_TLS_GD)
htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel);
else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
}
else
h->got.offset = (bfd_vma) -1;
eh = (struct elf_i386_link_hash_entry *) h;
if (eh->dyn_relocs == NULL)
return TRUE;
if (info->shared)
{
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
&& ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|| info->symbolic))
{
struct elf_i386_dyn_relocs **pp;
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
{
p->count -= p->pc_count;
p->pc_count = 0;
if (p->count == 0)
*pp = p->next;
else
pp = &p->next;
}
}
}
else
{
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
&& (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|| (htab->elf.dynamic_sections_created
&& (h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_undefined))))
{
if (h->dynindx == -1
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
return FALSE;
}
if (h->dynindx != -1)
goto keep;
}
eh->dyn_relocs = NULL;
keep: ;
}
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *sreloc = elf_section_data (p->sec)->sreloc;
sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel);
}
return TRUE;
}
static bfd_boolean
readonly_dynrelocs (h, inf)
struct elf_link_hash_entry *h;
PTR inf;
{
struct elf_i386_link_hash_entry *eh;
struct elf_i386_dyn_relocs *p;
if (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;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
asection *s = p->sec->output_section;
if (s != NULL && (s->flags & SEC_READONLY) != 0)
{
struct bfd_link_info *info = (struct bfd_link_info *) inf;
info->flags |= DF_TEXTREL;
return FALSE;
}
}
return TRUE;
}
static bfd_boolean
elf_i386_size_dynamic_sections (output_bfd, info)
bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
struct elf_i386_link_hash_table *htab;
bfd *dynobj;
asection *s;
bfd_boolean relocs;
bfd *ibfd;
htab = elf_i386_hash_table (info);
dynobj = htab->elf.dynobj;
if (dynobj == NULL)
abort ();
if (htab->elf.dynamic_sections_created)
{
if (! info->shared)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
abort ();
s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
}
}
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
char *local_tls_type;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srel;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
continue;
for (s = ibfd->sections; s != NULL; s = s->next)
{
struct elf_i386_dyn_relocs *p;
for (p = *((struct elf_i386_dyn_relocs **)
&elf_section_data (s)->local_dynrel);
p != NULL;
p = p->next)
{
if (!bfd_is_abs_section (p->sec)
&& bfd_is_abs_section (p->sec->output_section))
{
}
else if (p->count != 0)
{
srel = elf_section_data (p->sec)->sreloc;
srel->_raw_size += p->count * sizeof (Elf32_External_Rel);
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
info->flags |= DF_TEXTREL;
}
}
}
local_got = elf_local_got_refcounts (ibfd);
if (!local_got)
continue;
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
local_tls_type = elf_i386_local_got_tls_type (ibfd);
s = htab->sgot;
srel = htab->srelgot;
for (; local_got < end_local_got; ++local_got, ++local_tls_type)
{
if (*local_got > 0)
{
*local_got = s->_raw_size;
s->_raw_size += 4;
if (*local_tls_type == GOT_TLS_GD
|| *local_tls_type == GOT_TLS_IE_BOTH)
s->_raw_size += 4;
if (info->shared
|| *local_tls_type == GOT_TLS_GD
|| (*local_tls_type & GOT_TLS_IE))
{
if (*local_tls_type == GOT_TLS_IE_BOTH)
srel->_raw_size += 2 * sizeof (Elf32_External_Rel);
else
srel->_raw_size += sizeof (Elf32_External_Rel);
}
}
else
*local_got = (bfd_vma) -1;
}
}
if (htab->tls_ldm_got.refcount > 0)
{
htab->tls_ldm_got.offset = htab->sgot->_raw_size;
htab->sgot->_raw_size += 8;
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
}
else
htab->tls_ldm_got.offset = -1;
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
relocs = FALSE;
for (s = dynobj->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
if (s == htab->splt
|| s == htab->sgot
|| s == htab->sgotplt)
{
}
else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0)
{
if (s->_raw_size != 0 && s != htab->srelplt)
relocs = TRUE;
s->reloc_count = 0;
}
else
{
continue;
}
if (s->_raw_size == 0)
{
_bfd_strip_section_from_output (info, s);
continue;
}
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL)
return FALSE;
}
if (htab->elf.dynamic_sections_created)
{
#define add_dynamic_entry(TAG, VAL) \
bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
if (! info->shared)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
}
if (htab->splt->_raw_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))
return FALSE;
}
if (relocs)
{
if (!add_dynamic_entry (DT_REL, 0)
|| !add_dynamic_entry (DT_RELSZ, 0)
|| !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
return FALSE;
if ((info->flags & DF_TEXTREL) == 0)
elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
(PTR) info);
if ((info->flags & DF_TEXTREL) != 0)
{
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
}
}
#undef add_dynamic_entry
return TRUE;
}
static bfd_boolean
elf_i386_fake_sections (abfd, hdr, sec)
bfd *abfd ATTRIBUTE_UNUSED;
Elf_Internal_Shdr *hdr;
asection *sec;
{
register const char *name;
name = bfd_get_section_name (abfd, sec);
if (strcmp (name, ".reloc") == 0)
hdr->sh_type = SHT_PROGBITS;
return TRUE;
}
static bfd_vma
dtpoff_base (info)
struct bfd_link_info *info;
{
if (elf_hash_table (info)->tls_segment == NULL)
return 0;
return elf_hash_table (info)->tls_segment->start;
}
static bfd_vma
tpoff (info, address)
struct bfd_link_info *info;
bfd_vma address;
{
struct elf_link_tls_segment *tls_segment
= elf_hash_table (info)->tls_segment;
if (tls_segment == NULL)
return 0;
return (align_power (tls_segment->size, tls_segment->align)
+ tls_segment->start - address);
}
static bfd_boolean
elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
contents, relocs, local_syms, local_sections)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *input_bfd;
asection *input_section;
bfd_byte *contents;
Elf_Internal_Rela *relocs;
Elf_Internal_Sym *local_syms;
asection **local_sections;
{
struct elf_i386_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_vma *local_got_offsets;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
htab = elf_i386_hash_table (info);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
unsigned int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma off;
bfd_vma relocation;
bfd_boolean unresolved_reloc;
bfd_reloc_status_type r;
unsigned int indx;
int tls_type;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_386_GNU_VTINHERIT
|| r_type == (int) R_386_GNU_VTENTRY)
continue;
if ((indx = (unsigned) 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_tls - R_386_ext))
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
howto = elf_howto_table + indx;
r_symndx = ELF32_R_SYM (rel->r_info);
if (info->relocateable)
{
bfd_vma val;
bfd_byte *where;
if (r_symndx >= symtab_hdr->sh_info)
continue;
sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
continue;
sec = local_sections[r_symndx];
val = sec->output_offset;
if (val == 0)
continue;
where = contents + rel->r_offset;
switch (howto->size)
{
case 0:
val += bfd_get_8 (input_bfd, where);
bfd_put_8 (input_bfd, val, where);
break;
case 1:
val += bfd_get_16 (input_bfd, where);
bfd_put_16 (input_bfd, val, where);
break;
case 2:
val += bfd_get_32 (input_bfd, where);
bfd_put_32 (input_bfd, val, where);
break;
default:
abort ();
}
continue;
}
h = NULL;
sym = NULL;
sec = NULL;
unresolved_reloc = FALSE;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
if ((sec->flags & SEC_MERGE)
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
asection *msec;
bfd_vma addend;
bfd_byte *where = contents + rel->r_offset;
switch (howto->size)
{
case 0:
addend = bfd_get_8 (input_bfd, where);
if (howto->pc_relative)
{
addend = (addend ^ 0x80) - 0x80;
addend += 1;
}
break;
case 1:
addend = bfd_get_16 (input_bfd, where);
if (howto->pc_relative)
{
addend = (addend ^ 0x8000) - 0x8000;
addend += 2;
}
break;
case 2:
addend = bfd_get_32 (input_bfd, where);
if (howto->pc_relative)
{
addend = (addend ^ 0x80000000) - 0x80000000;
addend += 4;
}
break;
default:
abort ();
}
msec = sec;
addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
addend -= relocation;
addend += msec->output_section->vma + msec->output_offset;
switch (howto->size)
{
case 0:
if (howto->pc_relative)
addend -= 1;
bfd_put_8 (input_bfd, addend, where);
break;
case 1:
if (howto->pc_relative)
addend -= 2;
bfd_put_16 (input_bfd, addend, where);
break;
case 2:
if (howto->pc_relative)
addend -= 4;
bfd_put_32 (input_bfd, addend, where);
break;
}
}
}
else
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
relocation = 0;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
if (sec->output_section == NULL)
unresolved_reloc = TRUE;
else
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
;
else if (info->shared
&& (!info->symbolic || info->allow_shlib_undefined)
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
;
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
input_section, rel->r_offset,
(!info->shared || info->no_undefined
|| ELF_ST_VISIBILITY (h->other)))))
return FALSE;
}
}
switch (r_type)
{
case R_386_GOT32:
if (htab->sgot == NULL)
abort ();
if (h != NULL)
{
bfd_boolean dyn;
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|| (info->shared
&& (info->symbolic
|| h->dynindx == -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
if ((off & 1) != 0)
off &= ~1;
else
{
bfd_put_32 (output_bfd, relocation,
htab->sgot->contents + off);
h->got.offset |= 1;
}
}
else
unresolved_reloc = FALSE;
}
else
{
if (local_got_offsets == NULL)
abort ();
off = local_got_offsets[r_symndx];
if ((off & 1) != 0)
off &= ~1;
else
{
bfd_put_32 (output_bfd, relocation,
htab->sgot->contents + off);
if (info->shared)
{
asection *s;
Elf_Internal_Rela outrel;
bfd_byte *loc;
s = htab->srelgot;
if (s == NULL)
abort ();
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->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);
}
local_got_offsets[r_symndx] |= 1;
}
}
if (off >= (bfd_vma) -2)
abort ();
relocation = htab->sgot->output_offset + off;
break;
case R_386_GOTOFF:
relocation -= htab->sgot->output_section->vma;
break;
case R_386_GOTPC:
relocation = htab->sgot->output_section->vma;
unresolved_reloc = FALSE;
break;
case R_386_PLT32:
if (h == NULL)
break;
if (h->plt.offset == (bfd_vma) -1
|| htab->splt == NULL)
{
break;
}
relocation = (htab->splt->output_section->vma
+ htab->splt->output_offset
+ h->plt.offset);
unresolved_reloc = FALSE;
break;
case R_386_32:
case R_386_PC32:
if (r_symndx == 0
|| (input_section->flags & SEC_ALLOC) == 0)
break;
if ((info->shared
&& (r_type != R_386_PC32
|| (h != NULL
&& h->dynindx != -1
&& (! info->symbolic
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|| (!info->shared
&& h != NULL
&& h->dynindx != -1
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
&& (((h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0)
|| h->root.type == bfd_link_hash_undefweak
|| h->root.type == bfd_link_hash_undefined)))
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
bfd_boolean skip, relocate;
asection *sreloc;
skip = FALSE;
relocate = FALSE;
outrel.r_offset =
_bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset);
if (outrel.r_offset == (bfd_vma) -1)
skip = TRUE;
else if (outrel.r_offset == (bfd_vma) -2)
skip = TRUE, relocate = TRUE;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
if (skip)
memset (&outrel, 0, sizeof outrel);
else if (h != NULL
&& h->dynindx != -1
&& (r_type == R_386_PC32
|| !info->shared
|| !info->symbolic
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
else
{
relocate = TRUE;
outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
}
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);
if (! relocate)
continue;
}
break;
case R_386_TLS_IE:
if (info->shared)
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
asection *sreloc;
outrel.r_offset = rel->r_offset
+ input_section->output_section->vma
+ input_section->output_offset;
outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
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);
}
case R_386_TLS_GD:
case R_386_TLS_IE_32:
case R_386_TLS_GOTIE:
r_type = elf_i386_tls_transition (info, r_type, h == NULL);
tls_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
{
tls_type = elf_i386_hash_entry(h)->tls_type;
if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
r_type = R_386_TLS_LE_32;
}
if (tls_type == GOT_TLS_IE)
tls_type = GOT_TLS_IE_NEG;
if (r_type == R_386_TLS_GD)
{
if (tls_type == GOT_TLS_IE_POS)
r_type = R_386_TLS_GOTIE;
else if (tls_type & GOT_TLS_IE)
r_type = R_386_TLS_IE_32;
}
if (r_type == R_386_TLS_LE_32)
{
BFD_ASSERT (! unresolved_reloc);
if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
{
unsigned int val, type;
bfd_vma roff;
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
BFD_ASSERT (type == 0x8d || type == 0x04);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
roff = rel->r_offset + 5;
val = bfd_get_8 (input_bfd,
contents + rel->r_offset - 1);
if (type == 0x04)
{
BFD_ASSERT (rel->r_offset >= 3);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset - 3)
== 0x8d);
BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
memcpy (contents + rel->r_offset - 3,
"\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
}
else
{
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
if (rel->r_offset + 10 <= input_section->_raw_size
&& bfd_get_8 (input_bfd,
contents + rel->r_offset + 9) == 0x90)
{
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
roff = rel->r_offset + 6;
}
else
{
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
}
}
bfd_put_32 (output_bfd, tpoff (info, relocation),
contents + roff);
rel++;
continue;
}
else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
{
unsigned int val, type;
BFD_ASSERT (rel->r_offset >= 1);
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size);
if (val == 0xa1)
{
bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1);
}
else
{
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
switch (type)
{
case 0x8b:
BFD_ASSERT ((val & 0xc7) == 0x05);
bfd_put_8 (output_bfd, 0xc7,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd,
0xc0 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
break;
case 0x03:
BFD_ASSERT ((val & 0xc7) == 0x05);
bfd_put_8 (output_bfd, 0x81,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd,
0xc0 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
break;
default:
BFD_FAIL ();
break;
}
}
bfd_put_32 (output_bfd, -tpoff (info, relocation),
contents + rel->r_offset);
continue;
}
else
{
unsigned int val, type;
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size);
BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
if (type == 0x8b)
{
bfd_put_8 (output_bfd, 0xc7,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
}
else if (type == 0x2b)
{
bfd_put_8 (output_bfd, 0x81,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
}
else if (type == 0x03)
{
bfd_put_8 (output_bfd, 0x81,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
}
else
BFD_FAIL ();
if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
bfd_put_32 (output_bfd, -tpoff (info, relocation),
contents + rel->r_offset);
else
bfd_put_32 (output_bfd, tpoff (info, relocation),
contents + rel->r_offset);
continue;
}
}
if (htab->sgot == NULL)
abort ();
if (h != NULL)
off = h->got.offset;
else
{
if (local_got_offsets == NULL)
abort ();
off = local_got_offsets[r_symndx];
}
if ((off & 1) != 0)
off &= ~1;
else
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
int dr_type, indx;
if (htab->srelgot == NULL)
abort ();
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset + off);
indx = h && h->dynindx != -1 ? h->dynindx : 0;
if (r_type == R_386_TLS_GD)
dr_type = R_386_TLS_DTPMOD32;
else if (tls_type == GOT_TLS_IE_POS)
dr_type = R_386_TLS_TPOFF;
else
dr_type = R_386_TLS_TPOFF32;
if (dr_type == R_386_TLS_TPOFF && indx == 0)
bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
htab->sgot->contents + off);
else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
htab->sgot->contents + off);
else
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off);
outrel.r_info = ELF32_R_INFO (indx, dr_type);
loc = htab->srelgot->contents;
loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
if (r_type == R_386_TLS_GD)
{
if (indx == 0)
{
BFD_ASSERT (! unresolved_reloc);
bfd_put_32 (output_bfd,
relocation - dtpoff_base (info),
htab->sgot->contents + off + 4);
}
else
{
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (indx,
R_386_TLS_DTPOFF32);
outrel.r_offset += 4;
htab->srelgot->reloc_count++;
loc += sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
}
}
else if (tls_type == GOT_TLS_IE_BOTH)
{
bfd_put_32 (output_bfd,
indx == 0 ? relocation - dtpoff_base (info) : 0,
htab->sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
outrel.r_offset += 4;
htab->srelgot->reloc_count++;
loc += sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
}
if (h != NULL)
h->got.offset |= 1;
else
local_got_offsets[r_symndx] |= 1;
}
if (off >= (bfd_vma) -2)
abort ();
if (r_type == ELF32_R_TYPE (rel->r_info))
{
relocation = htab->sgot->output_offset + off;
if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
&& tls_type == GOT_TLS_IE_BOTH)
relocation += 4;
if (r_type == R_386_TLS_IE)
relocation += htab->sgot->output_section->vma;
unresolved_reloc = FALSE;
}
else
{
unsigned int val, type;
bfd_vma roff;
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
BFD_ASSERT (type == 0x8d || type == 0x04);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
roff = rel->r_offset - 3;
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
if (type == 0x04)
{
BFD_ASSERT (rel->r_offset >= 3);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset - 3)
== 0x8d);
BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
val >>= 3;
}
else
{
BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size);
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset + 9)
== 0x90);
roff = rel->r_offset - 2;
}
memcpy (contents + roff,
"\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
contents[roff + 7] = 0x80 | (val & 7);
if (r_type == R_386_TLS_GOTIE)
{
contents[roff + 6] = 0x03;
if (tls_type == GOT_TLS_IE_BOTH)
off += 4;
}
bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
contents + roff + 8);
rel++;
continue;
}
break;
case R_386_TLS_LDM:
if (! info->shared)
{
unsigned int val;
BFD_ASSERT (rel->r_offset >= 2);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
== 0x8d);
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
rel++;
continue;
}
if (htab->sgot == NULL)
abort ();
off = htab->tls_ldm_got.offset;
if (off & 1)
off &= ~1;
else
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
if (htab->srelgot == NULL)
abort ();
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset + off);
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off);
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
loc = htab->srelgot->contents;
loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
htab->tls_ldm_got.offset |= 1;
}
relocation = htab->sgot->output_offset + off;
unresolved_reloc = FALSE;
break;
case R_386_TLS_LDO_32:
if (info->shared || (input_section->flags & SEC_CODE) == 0)
relocation -= dtpoff_base (info);
else
relocation = -tpoff (info, relocation);
break;
case R_386_TLS_LE_32:
case R_386_TLS_LE:
if (info->shared)
{
Elf_Internal_Rela outrel;
asection *sreloc;
bfd_byte *loc;
int indx;
outrel.r_offset = rel->r_offset
+ input_section->output_section->vma
+ input_section->output_offset;
if (h != NULL && h->dynindx != -1)
indx = h->dynindx;
else
indx = 0;
if (r_type == R_386_TLS_LE_32)
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
else
outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
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);
if (indx)
continue;
else if (r_type == R_386_TLS_LE_32)
relocation = dtpoff_base (info) - relocation;
else
relocation -= dtpoff_base (info);
}
else if (r_type == R_386_TLS_LE_32)
relocation = tpoff (info, relocation);
else
relocation = -tpoff (info, relocation);
break;
default:
break;
}
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
{
(*_bfd_error_handler)
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
bfd_archive_filename (input_bfd),
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset,
h->root.root.string);
return FALSE;
}
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, (bfd_vma) 0);
if (r != bfd_reloc_ok)
{
const char *name;
if (h != NULL)
name = h->root.root.string;
else
{
name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
return FALSE;
if (*name == '\0')
name = bfd_section_name (input_bfd, sec);
}
if (r == bfd_reloc_overflow)
{
if (! ((*info->callbacks->reloc_overflow)
(info, name, howto->name, (bfd_vma) 0,
input_bfd, input_section, rel->r_offset)))
return FALSE;
}
else
{
(*_bfd_error_handler)
(_("%s(%s+0x%lx): reloc against `%s': error %d"),
bfd_archive_filename (input_bfd),
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset, name, (int) r);
return FALSE;
}
}
}
return TRUE;
}
static bfd_boolean
elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
struct elf_i386_link_hash_table *htab;
htab = elf_i386_hash_table (info);
if (h->plt.offset != (bfd_vma) -1)
{
bfd_vma plt_index;
bfd_vma got_offset;
Elf_Internal_Rela rel;
bfd_byte *loc;
if (h->dynindx == -1
|| htab->splt == NULL
|| htab->sgotplt == NULL
|| htab->srelplt == NULL)
abort ();
plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
got_offset = (plt_index + 3) * 4;
if (! info->shared)
{
memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
PLT_ENTRY_SIZE);
bfd_put_32 (output_bfd,
(htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ got_offset),
htab->splt->contents + h->plt.offset + 2);
}
else
{
memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
PLT_ENTRY_SIZE);
bfd_put_32 (output_bfd, got_offset,
htab->splt->contents + h->plt.offset + 2);
}
bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
htab->splt->contents + h->plt.offset + 7);
bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
htab->splt->contents + h->plt.offset + 12);
bfd_put_32 (output_bfd,
(htab->splt->output_section->vma
+ htab->splt->output_offset
+ h->plt.offset
+ 6),
htab->sgotplt->contents + got_offset);
rel.r_offset = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ got_offset);
rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
sym->st_shndx = SHN_UNDEF;
}
}
if (h->got.offset != (bfd_vma) -1
&& elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD
&& (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
{
Elf_Internal_Rela rel;
bfd_byte *loc;
if (htab->sgot == NULL || htab->srelgot == NULL)
abort ();
rel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset
+ (h->got.offset & ~(bfd_vma) 1));
if (info->shared
&& (info->symbolic
|| h->dynindx == -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
{
BFD_ASSERT((h->got.offset & 1) != 0);
rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
}
else
{
BFD_ASSERT((h->got.offset & 1) == 0);
bfd_put_32 (output_bfd, (bfd_vma) 0,
htab->sgot->contents + h->got.offset);
rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
}
loc = htab->srelgot->contents;
loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
}
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
{
Elf_Internal_Rela rel;
bfd_byte *loc;
if (h->dynindx == -1
|| (h->root.type != bfd_link_hash_defined
&& h->root.type != bfd_link_hash_defweak)
|| htab->srelbss == NULL)
abort ();
rel.r_offset = (h->root.u.def.value
+ 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);
}
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|| strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
return TRUE;
}
static enum elf_reloc_type_class
elf_i386_reloc_type_class (rela)
const Elf_Internal_Rela *rela;
{
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_386_RELATIVE:
return reloc_class_relative;
case R_386_JUMP_SLOT:
return reloc_class_plt;
case R_386_COPY:
return reloc_class_copy;
default:
return reloc_class_normal;
}
}
static bfd_boolean
elf_i386_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
struct elf_i386_link_hash_table *htab;
bfd *dynobj;
asection *sdyn;
htab = elf_i386_hash_table (info);
dynobj = htab->elf.dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
if (htab->elf.dynamic_sections_created)
{
Elf32_External_Dyn *dyncon, *dynconend;
if (sdyn == NULL || htab->sgot == NULL)
abort ();
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
asection *s;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
default:
continue;
case DT_PLTGOT:
dyn.d_un.d_ptr = htab->sgot->output_section->vma;
break;
case DT_JMPREL:
s = htab->srelplt;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
break;
case DT_PLTRELSZ:
s = htab->srelplt;
dyn.d_un.d_val = s->_raw_size;
break;
case DT_RELSZ:
s = htab->srelplt;
if (s == NULL)
continue;
dyn.d_un.d_val -= s->_raw_size;
break;
case DT_REL:
s = htab->srelplt;
if (s == NULL)
continue;
if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
continue;
dyn.d_un.d_ptr += s->_raw_size;
break;
}
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
}
if (htab->splt && htab->splt->_raw_size > 0)
{
if (info->shared)
memcpy (htab->splt->contents,
elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE);
else
{
memcpy (htab->splt->contents,
elf_i386_plt0_entry, PLT_ENTRY_SIZE);
bfd_put_32 (output_bfd,
(htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ 4),
htab->splt->contents + 2);
bfd_put_32 (output_bfd,
(htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
+ 8),
htab->splt->contents + 8);
}
elf_section_data (htab->splt->output_section)
->this_hdr.sh_entsize = 4;
}
}
if (htab->sgotplt)
{
if (htab->sgotplt->_raw_size > 0)
{
bfd_put_32 (output_bfd,
(sdyn == NULL ? (bfd_vma) 0
: sdyn->output_section->vma + sdyn->output_offset),
htab->sgotplt->contents);
bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
}
elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
}
return TRUE;
}
#define TARGET_LITTLE_SYM bfd_elf32_i386_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
#define ELF_MACHINE_CODE EM_386
#define ELF_MAXPAGESIZE 0x1000
#define elf_backend_can_gc_sections 1
#define elf_backend_can_refcount 1
#define elf_backend_want_got_plt 1
#define elf_backend_plt_readonly 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
#define elf_backend_plt_header_size PLT_ENTRY_SIZE
#define elf_info_to_howto elf_i386_info_to_howto
#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
#define bfd_elf32_mkobject elf_i386_mkobject
#define elf_backend_object_p elf_i386_object_p
#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_reloc_type_lookup elf_i386_reloc_type_lookup
#define elf_backend_adjust_dynamic_symbol elf_i386_adjust_dynamic_symbol
#define elf_backend_check_relocs elf_i386_check_relocs
#define elf_backend_copy_indirect_symbol elf_i386_copy_indirect_symbol
#define elf_backend_create_dynamic_sections elf_i386_create_dynamic_sections
#define elf_backend_fake_sections elf_i386_fake_sections
#define elf_backend_finish_dynamic_sections elf_i386_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol elf_i386_finish_dynamic_symbol
#define elf_backend_gc_mark_hook elf_i386_gc_mark_hook
#define elf_backend_gc_sweep_hook elf_i386_gc_sweep_hook
#define elf_backend_grok_prstatus elf_i386_grok_prstatus
#define elf_backend_grok_psinfo elf_i386_grok_psinfo
#define elf_backend_reloc_type_class elf_i386_reloc_type_class
#define elf_backend_relocate_section elf_i386_relocate_section
#define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections
#include "elf32-target.h"
#undef TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-freebsd"
static void elf_i386_post_process_headers
PARAMS ((bfd *, struct bfd_link_info *));
static void
elf_i386_post_process_headers (abfd, link_info)
bfd *abfd;
struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
{
Elf_Internal_Ehdr *i_ehdrp;
i_ehdrp = elf_elfheader (abfd);
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
#ifdef OLD_FREEBSD_ABI_LABEL
memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
#endif
}
#undef elf_backend_post_process_headers
#define elf_backend_post_process_headers elf_i386_post_process_headers
#undef elf32_bed
#define elf32_bed elf32_i386_fbsd_bed
#include "elf32-target.h"