#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 /* 386 uses REL relocations instead of RELA. */
+/* 386 uses REL relocations instead of RELA. */
+#define USE_REL 1
#include "elf/i386.h"
R_386_standard counts the number up to this point, and
R_386_ext_offset is the value to subtract from a reloc type of
R_386_16 thru R_386_PC8 to form an index into this table. */
-#define R_386_standard ((unsigned int) R_386_GOTPC + 1)
-#define R_386_ext_offset ((unsigned int) R_386_TLS_TPOFF - R_386_standard)
+#define R_386_standard (R_386_GOTPC + 1)
+#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
/* These relocs are a GNU extension. */
HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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)
+#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
+#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
/* These are common with Solaris TLS implementation. */
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),
/* Another gap. */
-#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)
+#define R_386_tls (R_386_TLS_TPOFF32 + 1 - R_386_tls_offset)
+#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls)
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_386_GNU_VTINHERIT, /* type */
0, /* dst_mask */
FALSE) /* pcrel_offset */
-#define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
+#define R_386_vt (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)
+#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;
+elf_i386_reloc_type_lookup (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 ];
+ return &elf_howto_table[R_386_NONE];
case BFD_RELOC_32:
TRACE ("BFD_RELOC_32");
- return &elf_howto_table[(unsigned int) R_386_32 ];
+ return &elf_howto_table[R_386_32];
case BFD_RELOC_CTOR:
TRACE ("BFD_RELOC_CTOR");
- return &elf_howto_table[(unsigned int) R_386_32 ];
+ return &elf_howto_table[R_386_32];
case BFD_RELOC_32_PCREL:
TRACE ("BFD_RELOC_PC32");
- return &elf_howto_table[(unsigned int) R_386_PC32 ];
+ return &elf_howto_table[R_386_PC32];
case BFD_RELOC_386_GOT32:
TRACE ("BFD_RELOC_386_GOT32");
- return &elf_howto_table[(unsigned int) R_386_GOT32 ];
+ return &elf_howto_table[R_386_GOT32];
case BFD_RELOC_386_PLT32:
TRACE ("BFD_RELOC_386_PLT32");
- return &elf_howto_table[(unsigned int) R_386_PLT32 ];
+ return &elf_howto_table[R_386_PLT32];
case BFD_RELOC_386_COPY:
TRACE ("BFD_RELOC_386_COPY");
- return &elf_howto_table[(unsigned int) R_386_COPY ];
+ return &elf_howto_table[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 ];
+ return &elf_howto_table[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 ];
+ return &elf_howto_table[R_386_JUMP_SLOT];
case BFD_RELOC_386_RELATIVE:
TRACE ("BFD_RELOC_386_RELATIVE");
- return &elf_howto_table[(unsigned int) R_386_RELATIVE ];
+ return &elf_howto_table[R_386_RELATIVE];
case BFD_RELOC_386_GOTOFF:
TRACE ("BFD_RELOC_386_GOTOFF");
- return &elf_howto_table[(unsigned int) R_386_GOTOFF ];
+ return &elf_howto_table[R_386_GOTOFF];
case BFD_RELOC_386_GOTPC:
TRACE ("BFD_RELOC_386_GOTPC");
- return &elf_howto_table[(unsigned int) R_386_GOTPC ];
+ return &elf_howto_table[R_386_GOTPC];
/* These relocs are a GNU extension. */
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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
/* Common with Sun TLS implementation. */
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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[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];
+ return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
default:
break;
}
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;
+elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
unsigned int indx;
{
(*_bfd_error_handler) (_("%s: invalid relocation type %d"),
bfd_archive_filename (abfd), (int) r_type);
- indx = (unsigned int) R_386_NONE;
+ indx = R_386_NONE;
}
cache_ptr->howto = &elf_howto_table[indx];
}
_bfd_elf_is_local_label_name. */
static bfd_boolean
-elf_i386_is_local_label_name (abfd, name)
- bfd *abfd;
- const char *name;
+elf_i386_is_local_label_name (bfd *abfd, const char *name)
{
if (name[0] == '.' && name[1] == 'X')
return TRUE;
\f
/* Support for core dump NOTE sections. */
static bfd_boolean
-elf_i386_grok_prstatus (abfd, note)
- bfd *abfd;
- Elf_Internal_Note *note;
+elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
int offset;
size_t raw_size;
}
static bfd_boolean
-elf_i386_grok_psinfo (abfd, note)
- bfd *abfd;
- Elf_Internal_Note *note;
+elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->descsz)
{
case 124: /* Linux/i386 elf_prpsinfo */
elf_tdata (abfd)->core_program
- = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
+ = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
elf_tdata (abfd)->core_command
- = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
+ = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
}
/* Note that for some reason, a spurious space is tacked
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
+ copying dynamic variables from a shared lib into an app's dynbss
+ section, and instead use a dynamic relocation to point into the
+ shared lib. */
+#define ELIMINATE_COPY_RELOCS 1
+
/* The size in bytes of an entry in the procedure linkage table. */
#define PLT_ENTRY_SIZE 16
(elf_i386_tdata (abfd)->local_got_tls_type)
static bfd_boolean
-elf_i386_mkobject (abfd)
- bfd *abfd;
+elf_i386_mkobject (bfd *abfd)
{
bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
}
static bfd_boolean
-elf_i386_object_p (abfd)
- bfd *abfd;
+elf_i386_object_p (bfd *abfd)
{
/* Allocate our special target data. */
struct elf_i386_obj_tdata *new_tdata;
/* Create an entry in an i386 ELF linker hash table. */
static struct bfd_hash_entry *
-link_hash_newfunc (entry, table, string)
- struct bfd_hash_entry *entry;
- struct bfd_hash_table *table;
- const char *string;
+link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
{
/* Allocate the structure if it has not already been allocated by a
subclass. */
/* Create an i386 ELF linker hash table. */
static struct bfd_link_hash_table *
-elf_i386_link_hash_table_create (abfd)
- bfd *abfd;
+elf_i386_link_hash_table_create (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);
+ ret = bfd_malloc (amt);
if (ret == NULL)
return NULL;
shortcuts to them in our hash table. */
static bfd_boolean
-create_got_section (dynobj, info)
- bfd *dynobj;
- struct bfd_link_info *info;
+create_got_section (bfd *dynobj, struct bfd_link_info *info)
{
struct elf_i386_link_hash_table *htab;
hash table. */
static bfd_boolean
-elf_i386_create_dynamic_sections (dynobj, info)
- bfd *dynobj;
- struct bfd_link_info *info;
+elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
{
struct elf_i386_link_hash_table *htab;
/* Copy the extra info we tack onto an elf_link_hash_entry. */
static void
-elf_i386_copy_indirect_symbol (bed, dir, ind)
- struct elf_backend_data *bed;
- struct elf_link_hash_entry *dir, *ind;
+elf_i386_copy_indirect_symbol (struct elf_backend_data *bed,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
{
struct elf_i386_link_hash_entry *edir, *eind;
edir->tls_type = eind->tls_type;
eind->tls_type = GOT_UNKNOWN;
}
- _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+
+ if (ELIMINATE_COPY_RELOCS
+ && ind->root.type != bfd_link_hash_indirect
+ && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
+ /* If called to transfer flags for a weakdef during processing
+ of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
+ We clear it ourselves for ELIMINATE_COPY_RELOCS. */
+ dir->elf_link_hash_flags |=
+ (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC
+ | ELF_LINK_HASH_REF_REGULAR
+ | ELF_LINK_HASH_REF_REGULAR_NONWEAK));
+ else
+ _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;
+elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
{
if (info->shared)
return r_type;
table, and dynamic reloc sections. */
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;
+elf_i386_check_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;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
htab = elf_i386_hash_table (info);
size = symtab_hdr->sh_info;
size *= (sizeof (bfd_signed_vma) + sizeof(char));
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
+ local_got_refcounts = bfd_zalloc (abfd, size);
if (local_got_refcounts == NULL)
return FALSE;
elf_local_got_refcounts (abfd) = local_got_refcounts;
else
{
(*_bfd_error_handler)
- (_("%s: `%s' accessed both as normal and thread local symbol"),
+ (_("%s: `%s' accessed both as normal and "
+ "thread local symbol"),
bfd_archive_filename (abfd),
h ? h->root.root.string : "<local>");
return FALSE;
|| h->root.type == bfd_link_hash_defweak
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
- || (!info->shared
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
if (p == NULL || p->sec != sec)
{
bfd_size_type amt = sizeof *p;
- p = ((struct elf_i386_dyn_relocs *)
- bfd_alloc (htab->elf.dynobj, amt));
+ p = bfd_alloc (htab->elf.dynobj, amt);
if (p == NULL)
return FALSE;
p->next = *head;
relocation. */
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;
+elf_i386_gc_mark_hook (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)
{
/* Update the got entry reference counts for the section being removed. */
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_i386_gc_sweep_hook (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;
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;
- /* Fall through */
+ {
+ unsigned long r_symndx;
+ unsigned int r_type;
+ struct elf_link_hash_entry *h = NULL;
- case R_386_TLS_LE_32:
- case R_386_TLS_LE:
- if (!info->shared)
- break;
- /* Fall through */
+ 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;
- 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];
+ eh = (struct elf_i386_link_hash_entry *) h;
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+ if (p->sec == sec)
+ {
+ /* Everything must go for SEC. */
+ *pp = p->next;
+ break;
+ }
+ }
- if (!info->shared && h->plt.refcount > 0)
- h->plt.refcount -= 1;
+ r_type = ELF32_R_TYPE (rel->r_info);
+ r_type = elf_i386_tls_transition (info, r_type, h != NULL);
+ switch (r_type)
+ {
+ case R_386_TLS_LDM:
+ if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
+ elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
+ break;
- eh = (struct elf_i386_link_hash_entry *) h;
+ 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:
+ if (h != NULL)
+ {
+ 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;
+ }
+ break;
- 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_32:
+ case R_386_PC32:
+ if (info->shared)
+ break;
+ /* Fall through */
- 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;
+ case R_386_PLT32:
+ if (h != NULL)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
- default:
- break;
- }
+ default:
+ break;
+ }
+ }
return TRUE;
}
understand. */
static bfd_boolean
-elf_i386_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
+elf_i386_adjust_dynamic_symbol (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;
|| (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))
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))
{
/* This case can occur if we saw a PLT32 reloc in an input
file, but the symbol was never referred to by a dynamic
|| 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;
+ if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ h->elf_link_hash_flags
+ = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
+ | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
return TRUE;
}
return TRUE;
}
- eh = (struct elf_i386_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
+ if (ELIMINATE_COPY_RELOCS)
{
- s = p->sec->output_section;
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- break;
- }
+ struct elf_i386_link_hash_entry * eh;
+ struct elf_i386_dyn_relocs *p;
- /* If we didn't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (p == NULL)
- {
- 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 we didn't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ if (p == NULL)
+ {
+ h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
+ return TRUE;
+ }
}
/* We must allocate the symbol in our .dynbss section, which will
will be called from elflink.h. If elflink.h doesn't call our
finish_dynamic_symbol routine, we'll need to do something about
initializing any .plt and .got entries in elf_i386_relocate_section. */
-#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
+#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
((DYN) \
- && ((INFO)->shared \
+ && ((SHARED) \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
&& ((H)->dynindx != -1 \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
dynamic relocs. */
static bfd_boolean
-allocate_dynrelocs (h, inf)
- struct elf_link_hash_entry *h;
- PTR inf;
+allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct bfd_link_info *info;
struct elf_i386_link_hash_table *htab;
return FALSE;
}
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
+ if (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->splt;
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))
+ else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
}
else
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))
+ /* The only reloc that uses pc_count is R_386_PC32, which will
+ appear on a call or on something like ".long foo - .". We
+ want calls to protected symbols to resolve directly to the
+ function rather than going via the plt. If people want
+ function pointer comparisons to work as expected then they
+ should avoid writing assembly like ".long foo - .". */
+ if (SYMBOL_CALLS_LOCAL (info, h))
{
struct elf_i386_dyn_relocs **pp;
pp = &p->next;
}
}
+
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak)
+ eh->dyn_relocs = NULL;
}
- else
+ else if (ELIMINATE_COPY_RELOCS)
{
/* For the non-shared case, discard space for relocs against
symbols which turn out to need copy relocs or are not
/* Find any dynamic relocs that apply to read-only sections. */
static bfd_boolean
-readonly_dynrelocs (h, inf)
- struct elf_link_hash_entry *h;
- PTR inf;
+readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct elf_i386_link_hash_entry *eh;
struct elf_i386_dyn_relocs *p;
/* Set the sizes of the dynamic sections. */
static bfd_boolean
-elf_i386_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
{
struct elf_i386_link_hash_table *htab;
bfd *dynobj;
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
if (s == NULL)
section's contents are written out. This should not happen,
but this way if it does, we get a R_386_NONE reloc instead
of garbage. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
+ s->contents = bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL)
return FALSE;
}
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
#define add_dynamic_entry(TAG, VAL) \
- bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ bfd_elf32_add_dynamic_entry (info, (TAG), (VAL))
- if (! info->shared)
+ if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
section name, which is a hack, but ought to work. */
static bfd_boolean
-elf_i386_fake_sections (abfd, hdr, sec)
- bfd *abfd ATTRIBUTE_UNUSED;
- Elf_Internal_Shdr *hdr;
- asection *sec;
+elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ Elf_Internal_Shdr *hdr,
+ asection *sec)
{
register const char *name;
This is PT_TLS segment p_vaddr. */
static bfd_vma
-dtpoff_base (info)
- struct bfd_link_info *info;
+dtpoff_base (struct bfd_link_info *info)
{
/* If tls_segment is NULL, we should have signalled an error already. */
if (elf_hash_table (info)->tls_segment == NULL)
if STT_TLS virtual address is ADDRESS. */
static bfd_vma
-tpoff (info, address)
- struct bfd_link_info *info;
- bfd_vma address;
+tpoff (struct bfd_link_info *info, bfd_vma address)
{
struct elf_link_tls_segment *tls_segment
= elf_hash_table (info)->tls_segment;
/* Relocate an i386 ELF section. */
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;
+elf_i386_relocate_section (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;
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)
+ if (r_type == R_386_GNU_VTINHERIT
+ || r_type == R_386_GNU_VTENTRY)
continue;
- if ((indx = (unsigned) r_type) >= R_386_standard
+ 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_symndx = ELF32_R_SYM (rel->r_info);
- if (info->relocateable)
+ if (info->relocatable)
{
bfd_vma val;
bfd_byte *where;
}
else if (h->root.type == bfd_link_hash_undefweak)
;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
+ else if (!info->executable
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
;
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, 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)))
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
{
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
break;
if ((info->shared
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
&& (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
+ && !SYMBOL_CALLS_LOCAL (info, h))))
+ || (ELIMINATE_COPY_RELOCS
+ && !info->shared
&& h != NULL
&& h->dynindx != -1
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
if (val == 0xa1)
{
/* movl foo, %eax. */
- bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1);
+ 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);
+ type = bfd_get_8 (input_bfd,
+ contents + rel->r_offset - 2);
switch (type)
- {
+ {
case 0x8b:
/* movl */
BFD_ASSERT ((val & 0xc7) == 0x05);
default:
BFD_FAIL ();
break;
- }
+ }
}
bfd_put_32 (output_bfd, -tpoff (info, relocation),
contents + rel->r_offset);
if ((off & 1) != 0)
off &= ~1;
- else
+ else
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
- relocation, (bfd_vma) 0);
+ relocation, 0);
if (r != bfd_reloc_ok)
{
if (r == bfd_reloc_overflow)
{
if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
+ (info, name, howto->name, 0,
input_bfd, input_section, rel->r_offset)))
return FALSE;
}
dynamic sections here. */
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;
+elf_i386_finish_dynamic_symbol (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;
The entry in the global offset table will already have been
initialized in the relocate_section function. */
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))
+ && SYMBOL_REFERENCES_LOCAL (info, h))
{
BFD_ASSERT((h->got.offset & 1) != 0);
rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
dynamic linker, before writing them out. */
static enum elf_reloc_type_class
-elf_i386_reloc_type_class (rela)
- const Elf_Internal_Rela *rela;
+elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
{
- switch ((int) ELF32_R_TYPE (rela->r_info))
+ switch (ELF32_R_TYPE (rela->r_info))
{
case R_386_RELATIVE:
return reloc_class_relative;
/* Finish up the dynamic sections. */
static bfd_boolean
-elf_i386_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
+elf_i386_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
struct elf_i386_link_hash_table *htab;
bfd *dynobj;
if (htab->sgotplt->_raw_size > 0)
{
bfd_put_32 (output_bfd,
- (sdyn == NULL ? (bfd_vma) 0
+ (sdyn == NULL ? 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);
+ bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
+ bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
}
elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
#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
+/* Support RELA for objdump of prelink objects. */
+#define elf_info_to_howto elf_i386_info_to_howto_rel
#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
#define bfd_elf32_mkobject elf_i386_mkobject
"FreeBSD" label in the ELF header. So we put this label on all
executables and (for simplicity) also all other object files. */
-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_i386_post_process_headers (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
Elf_Internal_Ehdr *i_ehdrp;
projects / deliverable / binutils-gdb.git / blobdiff