return TRUE;
}
-enum elf_x86_64_plt_type
-{
- plt_non_lazy = 0,
- plt_lazy = 1 << 0,
- plt_second = 1 << 1,
- plt_unknown = -1
-};
-
-struct elf_x86_64_plt
-{
- const char *name;
- asection *sec;
- bfd_byte *contents;
- enum elf_x86_64_plt_type type;
- unsigned int plt_got_offset;
- unsigned int plt_got_insn_size;
- unsigned int plt_entry_size;
- long count;
-};
-
/* Forward declaration. */
static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
asymbol **dynsyms,
asymbol **ret)
{
- long size, count, i, n, len;
+ long count, i, n;
int j;
- unsigned int plt_got_offset, plt_entry_size, plt_got_insn_size;
- asymbol *s;
bfd_byte *plt_contents;
- long dynrelcount, relsize;
- arelent **dynrelbuf, *p;
+ long relsize;
const struct elf_x86_lazy_plt_layout *lazy_plt;
const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
asection *plt;
- char *names;
- enum elf_x86_64_plt_type plt_type;
- struct elf_x86_64_plt plts[] =
+ enum elf_x86_plt_type plt_type;
+ struct elf_x86_plt plts[] =
{
{ ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
{ ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
plts[j].contents = plt_contents;
}
- if (count == 0)
- return -1;
-
- dynrelbuf = (arelent **) bfd_malloc (relsize);
- if (dynrelbuf == NULL)
- return -1;
-
- dynrelcount = bfd_canonicalize_dynamic_reloc (abfd, dynrelbuf,
- dynsyms);
-
- /* Sort the relocs by address. */
- qsort (dynrelbuf, dynrelcount, sizeof (arelent *),
- _bfd_x86_elf_compare_relocs);
-
- size = count * sizeof (asymbol);
-
- /* Allocate space for @plt suffixes. */
- n = 0;
- for (i = 0; i < dynrelcount; i++)
- {
- p = dynrelbuf[i];
- size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
- if (p->addend != 0)
- size += sizeof ("+0x") - 1 + 8 + 8 * ABI_64_P (abfd);
- }
-
- s = *ret = (asymbol *) bfd_zmalloc (size);
- if (s == NULL)
- goto bad_return;
-
- /* Check for each PLT section. */
- names = (char *) (s + count);
- size = 0;
- n = 0;
- for (j = 0; plts[j].name != NULL; j++)
- if ((plt_contents = plts[j].contents) != NULL)
- {
- long k;
- bfd_vma offset;
-
- plt_got_offset = plts[j].plt_got_offset;
- plt_got_insn_size = plts[j].plt_got_insn_size;
- plt_entry_size = plts[j].plt_entry_size;
-
- plt = plts[j].sec;
-
- if ((plts[j].type & plt_lazy))
- {
- /* Skip PLT0 in lazy PLT. */
- k = 1;
- offset = plt_entry_size;
- }
- else
- {
- k = 0;
- offset = 0;
- }
-
- /* Check each PLT entry against dynamic relocations. */
- for (; k < plts[j].count; k++)
- {
- int off;
- bfd_vma got_vma;
- long min, max, mid;
-
- /* Get the PC-relative offset, a signed 32-bit integer. */
- off = H_GET_32 (abfd, (plt_contents + offset
- + plt_got_offset));
- got_vma = plt->vma + offset + off + plt_got_insn_size;
-
- /* Binary search. */
- p = dynrelbuf[0];
- min = 0;
- max = dynrelcount;
- while ((min + 1) < max)
- {
- arelent *r;
-
- mid = (min + max) / 2;
- r = dynrelbuf[mid];
- if (got_vma > r->address)
- min = mid;
- else if (got_vma < r->address)
- max = mid;
- else
- {
- p = r;
- break;
- }
- }
-
- /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
- if (got_vma == p->address
- && p->howto != NULL
- && (p->howto->type == R_X86_64_JUMP_SLOT
- || p->howto->type == R_X86_64_GLOB_DAT
- || p->howto->type == R_X86_64_IRELATIVE))
- {
- *s = **p->sym_ptr_ptr;
- /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL
- set. Since we are defining a symbol, ensure one
- of them is set. */
- if ((s->flags & BSF_LOCAL) == 0)
- s->flags |= BSF_GLOBAL;
- s->flags |= BSF_SYNTHETIC;
- /* This is no longer a section symbol. */
- s->flags &= ~BSF_SECTION_SYM;
- s->section = plt;
- s->the_bfd = plt->owner;
- s->value = offset;
- s->udata.p = NULL;
- s->name = names;
- len = strlen ((*p->sym_ptr_ptr)->name);
- memcpy (names, (*p->sym_ptr_ptr)->name, len);
- names += len;
- if (p->addend != 0)
- {
- char buf[30], *a;
-
- memcpy (names, "+0x", sizeof ("+0x") - 1);
- names += sizeof ("+0x") - 1;
- bfd_sprintf_vma (abfd, buf, p->addend);
- for (a = buf; *a == '0'; ++a)
- ;
- size = strlen (a);
- memcpy (names, a, size);
- names += size;
- }
- memcpy (names, "@plt", sizeof ("@plt"));
- names += sizeof ("@plt");
- n++;
- s++;
- }
- offset += plt_entry_size;
- }
- }
-
- /* PLT entries with R_X86_64_TLSDESC relocations are skipped. */
- if (n == 0)
- {
-bad_return:
- count = -1;
- }
- else
- count = n;
-
- for (j = 0; plts[j].name != NULL; j++)
- if (plts[j].contents != NULL)
- free (plts[j].contents);
-
- free (dynrelbuf);
-
- return count;
+ return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
+ (bfd_vma) 0, plts, dynsyms,
+ ret);
}
/* Handle an x86-64 specific section when reading an object file. This
projects / deliverable / binutils-gdb.git / blobdiff