#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf-nacl.h"
#include "bfd_stdint.h"
#include "objalloc.h"
#include "hashtab.h"
if (htab == NULL)
return FALSE;
- htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
+ htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
if (!info->shared)
- htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
+ htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
if (!htab->sdynbss
|| (!info->shared && !htab->srelbss))
abort ();
if (!info->no_ld_generated_unwind_info
- && bfd_get_section_by_name (dynobj, ".eh_frame") == NULL
+ && htab->plt_eh_frame == NULL
&& htab->elf.splt != NULL)
{
- const struct elf_x86_64_backend_data *const abed
- = get_elf_x86_64_backend_data (dynobj);
- flagword flags = get_elf_backend_data (dynobj)->dynamic_sec_flags;
+ flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
+ | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED);
htab->plt_eh_frame
- = bfd_make_section_with_flags (dynobj, ".eh_frame",
- flags | SEC_READONLY);
+ = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
if (htab->plt_eh_frame == NULL
|| !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
return FALSE;
-
- htab->plt_eh_frame->size = abed->eh_frame_plt_size;
- htab->plt_eh_frame->contents
- = bfd_alloc (dynobj, htab->plt_eh_frame->size);
- memcpy (htab->plt_eh_frame->contents,
- abed->eh_frame_plt, abed->eh_frame_plt_size);
}
return TRUE;
}
/* Set the contents of the .interp section to the interpreter. */
if (info->executable)
{
- s = bfd_get_section_by_name (dynobj, ".interp");
+ s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
abort ();
s->size = htab->dynamic_interpreter_size;
htab->elf.sgotplt->size = 0;
}
+ if (htab->plt_eh_frame != NULL
+ && htab->elf.splt != NULL
+ && htab->elf.splt->size != 0
+ && !bfd_is_abs_section (htab->elf.splt->output_section)
+ && _bfd_elf_eh_frame_present (info))
+ {
+ const struct elf_x86_64_backend_data *arch_data
+ = (const struct elf_x86_64_backend_data *) bed->arch_data;
+ htab->plt_eh_frame->size = arch_data->eh_frame_plt_size;
+ }
+
/* We now have determined the sizes of the various dynamic sections.
Allocate memory for them. */
relocs = FALSE;
|| s == htab->elf.sgotplt
|| s == htab->elf.iplt
|| s == htab->elf.igotplt
+ || s == htab->plt_eh_frame
|| s == htab->sdynbss)
{
/* Strip this section if we don't need it; see the
}
if (htab->plt_eh_frame != NULL
- && htab->elf.splt != NULL
- && htab->elf.splt->size != 0
- && (htab->elf.splt->flags & SEC_EXCLUDE) == 0)
- bfd_put_32 (dynobj, htab->elf.splt->size,
- htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
+ && htab->plt_eh_frame->contents != NULL)
+ {
+ const struct elf_x86_64_backend_data *arch_data
+ = (const struct elf_x86_64_backend_data *) bed->arch_data;
+
+ memcpy (htab->plt_eh_frame->contents,
+ arch_data->eh_frame_plt, htab->plt_eh_frame->size);
+ bfd_put_32 (dynobj, htab->elf.splt->size,
+ htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
+ }
if (htab->elf.dynamic_sections_created)
{
unresolved_reloc, warned);
}
- if (sec != NULL && elf_discarded_section (sec))
+ if (sec != NULL && discarded_section (sec))
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, relend, howto, contents);
+ rel, 1, relend, howto, 0, contents);
if (info->relocatable)
continue;
if (off >= (bfd_vma) -2)
abort ();
+ if (r_type == R_X86_64_GOTPCREL
+ && h->def_regular
+ && SYMBOL_REFERENCES_LOCAL (info, h)
+ && bfd_get_8 (input_bfd,
+ contents + rel->r_offset - 2) == 0x8b)
+ {
+ /* Convert
+ mov foo@GOTPCREL(%rip), %reg
+ to
+ lea foo(%rip), %reg
+ */
+ bfd_put_8 (output_bfd, 0x8d,
+ contents + rel->r_offset - 2);
+ break;
+ }
+
relocation = base_got->output_section->vma
+ base_got->output_offset + off;
if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64)
/* Check to make sure it isn't a protected function symbol
for shared library since it may not be local when used
as function address. */
- if (info->shared
+ if (!info->executable
&& h
+ && !SYMBOLIC_BIND (info, h)
&& h->def_regular
&& h->type == STT_FUNC
&& ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
outrel.r_info = htab->r_info (0,
R_X86_64_RELATIVE64);
outrel.r_addend = relocation + rel->r_addend;
+ /* Check addend overflow. */
+ if ((outrel.r_addend & 0x80000000)
+ != (rel->r_addend & 0x80000000))
+ {
+ const char *name;
+ int addend = rel->r_addend;
+ if (h && h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr,
+ sym, NULL);
+ if (addend < 0)
+ (*_bfd_error_handler)
+ (_("%B: addend -0x%x in relocation %s against "
+ "symbol `%s' at 0x%lx in section `%A' is "
+ "out of range"),
+ input_bfd, input_section, addend,
+ x86_64_elf_howto_table[r_type].name,
+ name, (unsigned long) rel->r_offset);
+ else
+ (*_bfd_error_handler)
+ (_("%B: addend 0x%x in relocation %s against "
+ "symbol `%s' at 0x%lx in section `%A' is "
+ "out of range"),
+ input_bfd, input_section, addend,
+ x86_64_elf_howto_table[r_type].name,
+ name, (unsigned long) rel->r_offset);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
}
else
{
&& h->def_dynamic)
&& _bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset) != (bfd_vma) -1)
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
- input_bfd,
- input_section,
- (long) rel->r_offset,
- howto->name,
- h->root.root.string);
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ h->root.root.string);
+ return FALSE;
+ }
do_relocation:
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
struct bfd_link_info *info,
struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
+ Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
{
struct elf_x86_64_link_hash_table *htab;
const struct elf_x86_64_backend_data *const abed
elf_append_rela (output_bfd, htab->srelbss, &rela);
}
- /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
- be NULL for local symbols. */
- if (sym != NULL
- && (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || h == htab->elf.hgot))
- sym->st_shndx = SHN_ABS;
-
return TRUE;
}
switch ((int) ELF32_R_TYPE (rela->r_info))
{
case R_X86_64_RELATIVE:
+ case R_X86_64_RELATIVE64:
return reloc_class_relative;
case R_X86_64_JUMP_SLOT:
return reloc_class_plt;
return FALSE;
dynobj = htab->elf.dynobj;
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ sdyn = bfd_get_linker_section (dynobj, ".dynamic");
if (htab->elf.dynamic_sections_created)
{
}
/* Adjust .eh_frame for .plt section. */
- if (htab->plt_eh_frame != NULL)
+ if (htab->plt_eh_frame != NULL
+ && htab->plt_eh_frame->contents != NULL)
{
if (htab->elf.splt != NULL
&& htab->elf.splt->size != 0
htab->plt_eh_frame->contents
+ PLT_FDE_START_OFFSET);
}
- if (htab->plt_eh_frame->sec_info_type
- == ELF_INFO_TYPE_EH_FRAME)
+ if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
{
if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
htab->plt_eh_frame,
0x4d, 0x01, 0xfb, /* add %r15, %r11 */
0x41, 0xff, 0xe3, /* jmpq *%r11 */
- /* 41 bytes of nop to pad out to the standard size. */
+ /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
+ 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopl %cs:0x0(%rax,%rax,1) */
+
+ /* 32 bytes of nop to pad out to the standard size. */
0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
- 0x66, 0x66, /* excess data32 prefixes */
- 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
+ 0x66, /* excess data32 prefix */
+ 0x90 /* nop */
};
static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
#undef elf_backend_arch_data
#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
+#undef elf_backend_modify_segment_map
+#define elf_backend_modify_segment_map nacl_modify_segment_map
+#undef elf_backend_modify_program_headers
+#define elf_backend_modify_program_headers nacl_modify_program_headers
+
#include "elf64-target.h"
/* Native Client x32 support. */
#include "elf32-target.h"
/* Restore defaults. */
-#undef elf_backend_object_p
+#undef elf_backend_object_p
#define elf_backend_object_p elf64_x86_64_elf_object_p
-#undef elf_backend_bfd_from_remote_memory
-#undef elf_backend_size_info
+#undef elf_backend_bfd_from_remote_memory
+#undef elf_backend_size_info
+#undef elf_backend_modify_segment_map
+#undef elf_backend_modify_program_headers
/* Intel L1OM support. */
projects / deliverable / binutils-gdb.git / blobdiff