unsigned char elf_reloc_val;
};
-static CONST struct elf_reloc_map x86_64_reloc_map[] =
+static const struct elf_reloc_map x86_64_reloc_map[] =
{
{ BFD_RELOC_NONE, R_X86_64_NONE, },
{ BFD_RELOC_64, R_X86_64_64, },
PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *));
static struct bfd_link_hash_table *elf64_x86_64_link_hash_table_create
PARAMS ((bfd *));
+static boolean elf64_x86_64_elf_object_p PARAMS ((bfd *abfd));
+static boolean elf64_x86_64_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *, asection *sec,
+ const Elf_Internal_Rela *));
+static asection *elf64_x86_64_gc_mark_hook
+ PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static boolean elf64_x86_64_gc_sweep_hook
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
static struct bfd_hash_entry *elf64_x86_64_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
Elf_Internal_Sym *sym));
static boolean elf64_x86_64_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
+static enum elf_reloc_type_class elf64_x86_64_reloc_type_class
+ PARAMS ((const Elf_Internal_Rela *));
/* Given a BFD reloc type, return a HOWTO structure. */
static reloc_howto_type *
i++)
{
if (x86_64_reloc_map[i].bfd_reloc_val == code)
- return &x86_64_elf_howto_table[(int)
- x86_64_reloc_map[i].elf_reloc_val];
+ return &x86_64_elf_howto_table[i];
}
return 0;
}
bfd *abfd;
{
struct elf64_x86_64_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table);
- ret = ((struct elf64_x86_64_link_hash_table *)
- bfd_alloc (abfd, sizeof (struct elf64_x86_64_link_hash_table)));
+ ret = ((struct elf64_x86_64_link_hash_table *) bfd_alloc (abfd, amt));
if (ret == (struct elf64_x86_64_link_hash_table *) NULL)
return NULL;
return &ret->root.root;
}
-boolean
+static boolean
elf64_x86_64_elf_object_p (abfd)
bfd *abfd;
{
if (h != NULL)
{
- if (h->got.refcount == -1)
+ if (h->got.refcount == 0)
{
- h->got.refcount = 1;
-
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
sgot->_raw_size += GOT_ENTRY_SIZE;
srelgot->_raw_size += sizeof (Elf64_External_Rela);
}
- else
- h->got.refcount += 1;
+ h->got.refcount += 1;
}
else
{
/* This is a global offset table entry for a local symbol. */
if (local_got_refcounts == NULL)
{
- size_t size;
+ bfd_size_type size;
- size = symtab_hdr->sh_info * sizeof (bfd_signed_vma);
+ size = symtab_hdr->sh_info;
+ size *= sizeof (bfd_signed_vma);
local_got_refcounts = ((bfd_signed_vma *)
- bfd_alloc (abfd, size));
+ bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
return false;
elf_local_got_refcounts (abfd) = local_got_refcounts;
- memset (local_got_refcounts, -1, size);
}
- if (local_got_refcounts[r_symndx] == -1)
+ if (local_got_refcounts[r_symndx] == 0)
{
- local_got_refcounts[r_symndx] = 1;
-
sgot->_raw_size += GOT_ENTRY_SIZE;
if (info->shared)
{
srelgot->_raw_size += sizeof (Elf64_External_Rela);
}
}
- else
- local_got_refcounts[r_symndx] += 1;
+ local_got_refcounts[r_symndx] += 1;
}
break;
if (h == NULL)
continue;
- if (h->plt.refcount == -1)
- {
- h->plt.refcount = 1;
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- }
- else
- h->plt.refcount += 1;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.refcount += 1;
break;
+ case R_X86_64_8:
+ case R_X86_64_16:
case R_X86_64_32:
+ case R_X86_64_64:
case R_X86_64_32S:
case R_X86_64_PC32:
if (h != NULL)
and symbol visibility changes render the symbol local. */
if (info->shared
&& (sec->flags & SEC_ALLOC) != 0
- && (ELF64_R_TYPE (rel->r_info) != R_X86_64_PC32
+ && (((ELF64_R_TYPE (rel->r_info) != R_X86_64_PC8)
+ && (ELF64_R_TYPE (rel->r_info) != R_X86_64_PC16)
+ && (ELF64_R_TYPE (rel->r_info) != R_X86_64_PC32))
|| (h != NULL
&& (! info->symbolic
|| (h->elf_link_hash_flags
flags |= SEC_ALLOC | SEC_LOAD;
if (sreloc == NULL
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
+ || ! bfd_set_section_alignment (dynobj, sreloc, 3))
return false;
}
+ if (sec->flags & SEC_READONLY)
+ info->flags |= DF_TEXTREL;
}
sreloc->_raw_size += sizeof (Elf64_External_Rela);
that this function is only called if we are using an
elf64_x86_64 linker hash table, which means that h is
really a pointer to an elf64_x86_64_link_hash_entry. */
- if (h != NULL && ELF64_R_TYPE (rel->r_info) == R_X86_64_PC32)
+ if (h != NULL
+ && ((ELF64_R_TYPE (rel->r_info) == R_X86_64_PC8)
+ || (ELF64_R_TYPE (rel->r_info) == R_X86_64_PC16)
+ || (ELF64_R_TYPE (rel->r_info) == R_X86_64_PC32)))
{
struct elf64_x86_64_link_hash_entry *eh;
struct elf64_x86_64_pcrel_relocs_copied *p;
if (p == NULL)
{
p = ((struct elf64_x86_64_pcrel_relocs_copied *)
- bfd_alloc (dynobj, sizeof *p));
+ bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
if (p == NULL)
return false;
p->next = eh->pcrel_relocs_copied;
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_X86_64_GNU_VTENTRY:
- if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset))
+ if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return false;
break;
}
return true;
}
+ else
+ h->plt.offset = (bfd_vma) -1;
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
static boolean
elf64_x86_64_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *s;
boolean plt;
boolean relocs;
- boolean reltext;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
/* The check_relocs and adjust_dynamic_symbol entry points have
determined the sizes of the various dynamic sections. Allocate
memory for them. */
- plt = relocs = reltext = false;
+ plt = relocs = false;
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
}
else
{
- asection *target;
-
- /* Remember whether there are any reloc sections other
- than .rela.plt. */
if (strcmp (name, ".rela.plt") != 0)
- {
- const char *outname;
-
- relocs = true;
-
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL
- entry. The entries in the .rela.plt section
- really apply to the .got section, which we
- created ourselves and so know is not readonly. */
- outname = bfd_get_section_name (output_bfd,
- s->output_section);
- target = bfd_get_section_by_name (output_bfd, outname + 5);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0
- && (target->flags & SEC_ALLOC) != 0)
- reltext = true;
- }
+ relocs = true;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
must add the entries now so that we get the correct size for
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_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+
if (! info->shared)
{
- if (! bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0))
+ if (!add_dynamic_entry (DT_DEBUG, 0))
return false;
}
if (plt)
{
- if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
- || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0))
+ if (!add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+ || !add_dynamic_entry (DT_JMPREL, 0))
return false;
}
if (relocs)
{
- if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0)
- || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT,
- sizeof (Elf64_External_Rela)))
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
return false;
}
- if (reltext)
+ if ((info->flags & DF_TEXTREL) != 0)
{
- if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
return false;
- info->flags |= DF_TEXTREL;
}
}
+#undef add_dynamic_entry
return true;
}
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rela);
}
else
{
|| h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
- if (r_type == R_X86_64_GOTPCREL
- || (r_type = R_X86_64_PLT32
- && splt != NULL
- && h->plt.offset != (bfd_vma) -1)
- || (r_type = R_X86_64_GOT32
+ if ((r_type == R_X86_64_PLT32
+ && splt != NULL
+ && h->plt.offset != (bfd_vma) -1)
+ || ((r_type == R_X86_64_GOT32 || r_type == R_X86_64_GOTPCREL)
&& elf_hash_table (info)->dynamic_sections_created
&& (!info->shared
|| (! info->symbolic && h->dynindx != -1)
&& ((! info->symbolic && h->dynindx != -1)
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0)
- && ( r_type == R_X86_64_8 ||
- r_type == R_X86_64_16 ||
- r_type == R_X86_64_32 ||
- r_type == R_X86_64_64 ||
- r_type == R_X86_64_PC16 ||
- r_type == R_X86_64_PC32)
+ && (r_type == R_X86_64_8
+ || r_type == R_X86_64_16
+ || r_type == R_X86_64_32
+ || r_type == R_X86_64_64
+ || r_type == R_X86_64_PC8
+ || r_type == R_X86_64_PC16
+ || r_type == R_X86_64_PC32)
&& ((input_section->flags & SEC_ALLOC) != 0
/* DWARF will emit R_X86_64_32 relocations in its
sections against symbols defined externally
{
(*_bfd_error_handler)
(_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
- bfd_get_filename (input_bfd), h->root.root.string,
+ bfd_archive_filename (input_bfd), h->root.root.string,
bfd_get_section_name (input_bfd, input_section));
relocation = 0;
}
}
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
- else if (info->shared && !info->symbolic && !info->no_undefined
+ else if (info->shared
+ && (!info->symbolic || info->allow_shlib_undefined)
+ && !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
relocation = 0;
else
else
relocation = sgot->output_offset + off;
}
+
break;
case R_X86_64_PLT32:
+ h->plt.offset);
break;
- case R_X86_64_8:
- case R_X86_64_16:
- case R_X86_64_32:
case R_X86_64_PC8:
case R_X86_64_PC16:
case R_X86_64_PC32:
- /* FIXME: The abi says the linker should make sure the value is
+ if (h == NULL || h->dynindx == -1
+ || (info->symbolic
+ && h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
+ break;
+ /* Fall through. */
+ case R_X86_64_8:
+ case R_X86_64_16:
+ case R_X86_64_32:
+ case R_X86_64_64:
+ /* FIXME: The ABI says the linker should make sure the value is
the same when it's zeroextended to 64 bit. */
if (info->shared
- && (input_section->flags & SEC_ALLOC) != 0
- && ((r_type != R_X86_64_PC8 && r_type != R_X86_64_PC16
- && r_type != R_X86_64_PC32)
- || (h != NULL
- && h->dynindx != -1
- && (! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ && r_symndx != 0
+ && (input_section->flags & SEC_ALLOC) != 0)
{
Elf_Internal_Rela outrel;
boolean skip, relocate;
skip = false;
- if (elf_section_data (input_section)->stab_info == NULL)
- outrel.r_offset = rela->r_offset;
- else
- {
- bfd_vma off;
-
- off = (_bfd_stab_section_offset
- (output_bfd, &elf_hash_table (info)->stab_info,
- input_section,
- &elf_section_data (input_section)->stab_info,
- rela->r_offset));
- if (off == (bfd_vma) -1)
- skip = true;
- outrel.r_offset = off;
- }
+ outrel.r_offset =
+ _bfd_elf_section_offset (output_bfd, info, input_section,
+ rela->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1)
+ skip = true;
outrel.r_offset += (input_section->output_section->vma
+ input_section->output_offset);
memset (&outrel, 0, sizeof outrel);
relocate = false;
}
- else if ((r_type == R_X86_64_PC8) || (r_type == R_X86_64_PC16)
- || (r_type == R_X86_64_PC32))
+ /* h->dynindx may be -1 if this symbol was marked to
+ become local. */
+ else if (h != NULL
+ && ((! info->symbolic && h->dynindx != -1)
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
{
- BFD_ASSERT (h != NULL && h->dynindx != -1);
+ BFD_ASSERT (h->dynindx != -1);
relocate = false;
outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
outrel.r_addend = relocation + rela->r_addend;
}
else
{
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- if (h == NULL
- || ((info->symbolic || h->dynindx == -1)
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) != 0))
+ if (r_type == R_X86_64_64)
{
relocate = true;
outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
}
else
{
- BFD_ASSERT (h->dynindx != -1);
+ long sindx;
+
+ if (h == NULL)
+ sec = local_sections[r_symndx];
+ else
+ {
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined
+ || (h->root.type
+ == bfd_link_hash_defweak));
+ sec = h->root.u.def.section;
+ }
+ if (sec != NULL && bfd_is_abs_section (sec))
+ sindx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ else
+ {
+ asection *osec;
+
+ osec = sec->output_section;
+ sindx = elf_section_data (osec)->dynindx;
+ BFD_ASSERT (sindx > 0);
+ }
+
relocate = false;
- outrel.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_32);
+ outrel.r_info = ELF64_R_INFO (sindx, r_type);
outrel.r_addend = relocation + rela->r_addend;
}
+
}
bfd_elf64_swap_reloca_out (output_bfd, &outrel,
rela.r_offset = (sgot->output_section->vma
+ sgot->output_offset
- + (h->got.offset &~ 1));
+ + (h->got.offset &~ (bfd_vma) 1));
/* If this is a static link, or it is a -Bsymbolic link and the
symbol is defined locally or was forced to be local because
&& (info->symbolic || h->dynindx == -1)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
+ BFD_ASSERT((h->got.offset & 1) != 0);
rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE);
rela.r_addend = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
return true;
}
-/*
- * Why was the hash table entry size definition changed from
- * ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
- * this is the only reason for the elf64_x86_64_size_info structure.
- */
-
-const struct elf_size_info elf64_86_64_size_info =
+static enum elf_reloc_type_class
+elf64_x86_64_reloc_type_class (rela)
+ const Elf_Internal_Rela *rela;
{
- sizeof (Elf64_External_Ehdr),
- sizeof (Elf64_External_Phdr),
- sizeof (Elf64_External_Shdr),
- sizeof (Elf64_External_Rel),
- sizeof (Elf64_External_Rela),
- sizeof (Elf64_External_Sym),
- sizeof (Elf64_External_Dyn),
- sizeof (Elf_External_Note),
- 8, /* hash-table entry size */
- 1, /* internal relocations per external relocations */
- 64, /* arch_size */
- 8, /* file_align */
- ELFCLASS64, EV_CURRENT,
- bfd_elf64_write_out_phdrs,
- bfd_elf64_write_shdrs_and_ehdr,
- bfd_elf64_write_relocs,
- bfd_elf64_swap_symbol_out,
- bfd_elf64_slurp_reloc_table,
- bfd_elf64_slurp_symbol_table,
- bfd_elf64_swap_dyn_in,
- bfd_elf64_swap_dyn_out,
- NULL,
- NULL,
- NULL,
- NULL
-};
+ switch ((int) ELF64_R_TYPE (rela->r_info))
+ {
+ case R_X86_64_RELATIVE:
+ return reloc_class_relative;
+ case R_X86_64_JUMP_SLOT:
+ return reloc_class_plt;
+ case R_X86_64_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
+}
#define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec
#define TARGET_LITTLE_NAME "elf64-x86-64"
#define ELF_MACHINE_CODE EM_X86_64
#define ELF_MAXPAGESIZE 0x100000
-#define elf_backend_size_info elf64_86_64_size_info
-
#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_relocate_section elf64_x86_64_relocate_section
#define elf_backend_size_dynamic_sections elf64_x86_64_size_dynamic_sections
#define elf_backend_object_p elf64_x86_64_elf_object_p
+#define elf_backend_reloc_type_class elf64_x86_64_reloc_type_class
#include "elf64-target.h"
projects / deliverable / binutils-gdb.git / blobdiff