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ELF: Move tlsdesc_plt/tlsdesc_got to elf_link_hash_table

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All ELF backends with TLS descriptor support have

  /* The offset into splt of the PLT entry for the TLS descriptor
     resolver.  Special values are 0, if not necessary (or not found
     to be necessary yet), and -1 if needed but not determined
     yet.  */
  bfd_vma tlsdesc_plt;

  /* The GOT offset for the lazy trampoline.  Communicated to the
     loader via DT_TLSDESC_GOT.  The magic value (bfd_vma) -1
     indicates an offset is not allocated.  */
  bfd_vma tlsdesc_got;

in symbol hash entry.  Move tlsdesc_plt/tlsdesc_got to elf_link_hash_entry
to reduce code duplication.

	* elf-bfd.h (elf_link_hash_entry): Add tlsdesc_plt and
	tlsdesc_got.
	* elf32-arm.c (elf32_arm_link_hash_table): Remove tlsdesc_plt
	and dt_tlsdesc_got.
	(elf32_arm_size_dynamic_sections): Updated.  Clear
	root.tlsdesc_plt for DF_BIND_NOW.
	(elf32_arm_finish_dynamic_sections): Updated.
	(elf32_arm_output_arch_local_syms): Likewise.
	* elf32-nds32.c (nds32_elf_size_dynamic_sections): Updated.
	Clear root.tlsdesc_plt for DF_BIND_NOW.
	(nds32_elf_finish_dynamic_sections): Updated.
	* elf32-nds32.h (elf_nds32_link_hash_table): Remove
	dt_tlsdesc_plt and dt_tlsdesc_got.
	* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Updated.
	* elfnn-aarch64.c (elf_aarch64_link_hash_table): Remove
	tlsdesc_plt and dt_tlsdesc_got.
	(elfNN_aarch64_allocate_dynrelocs): Updated.
	(elfNN_aarch64_finish_dynamic_sections): Likewise.
	(elfNN_aarch64_size_dynamic_sections): Updated.  Clear
	root.tlsdesc_plt for DF_BIND_NOW.  Don't check DF_BIND_NOW
	twice.
	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Updated.
	(_bfd_x86_elf_size_dynamic_sections): Likewise.
	(_bfd_x86_elf_finish_dynamic_sections): Likewise.
	* elfxx-x86.h (elf_x86_link_hash_table): Remove tlsdesc_plt and
	tlsdesc_got.
This commit is contained in:
H.J. Lu 2020-06-08 04:24:04 -07:00
parent b37a771440
commit 9bcc30e417
9 changed files with 108 additions and 102 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
bfd/ChangeLog
View File

@ -1,3 +1,32 @@
2020-06-08 H.J. Lu <hongjiu.lu@intel.com>
* elf-bfd.h (elf_link_hash_entry): Add tlsdesc_plt and
tlsdesc_got.
* elf32-arm.c (elf32_arm_link_hash_table): Remove tlsdesc_plt
and dt_tlsdesc_got.
(elf32_arm_size_dynamic_sections): Updated. Clear
root.tlsdesc_plt for DF_BIND_NOW.
(elf32_arm_finish_dynamic_sections): Updated.
(elf32_arm_output_arch_local_syms): Likewise.
* elf32-nds32.c (nds32_elf_size_dynamic_sections): Updated.
Clear root.tlsdesc_plt for DF_BIND_NOW.
(nds32_elf_finish_dynamic_sections): Updated.
* elf32-nds32.h (elf_nds32_link_hash_table): Remove
dt_tlsdesc_plt and dt_tlsdesc_got.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Updated.
* elfnn-aarch64.c (elf_aarch64_link_hash_table): Remove
tlsdesc_plt and dt_tlsdesc_got.
(elfNN_aarch64_allocate_dynrelocs): Updated.
(elfNN_aarch64_finish_dynamic_sections): Likewise.
(elfNN_aarch64_size_dynamic_sections): Updated. Clear
root.tlsdesc_plt for DF_BIND_NOW. Don't check DF_BIND_NOW
twice.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Updated.
(_bfd_x86_elf_size_dynamic_sections): Likewise.
(_bfd_x86_elf_finish_dynamic_sections): Likewise.
* elfxx-x86.h (elf_x86_link_hash_table): Remove tlsdesc_plt and
tlsdesc_got.
2020-06-07 H.J. Lu <hongjiu.lu@intel.com>
* elf32-tic6x.c (elf32_bed): Defined the default to

11
bfd/elf-bfd.h
View File

@ -650,6 +650,17 @@ struct elf_link_hash_table
asection *tls_sec;
bfd_size_type tls_size; /* Bytes. */
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma tlsdesc_plt;
/* The GOT offset for the lazy trampoline. Communicated to the
loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
indicates an offset is not allocated. */
bfd_vma tlsdesc_got;
/* Target OS for linker output. */
enum elf_target_os target_os;

45
bfd/elf32-arm.c
View File

@ -3380,16 +3380,6 @@ struct elf32_arm_link_hash_table
/* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
asection *srelplt2;
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma dt_tlsdesc_plt;
/* The offset into sgot of the GOT entry used by the PLT entry
above. */
bfd_vma dt_tlsdesc_got;
/* Offset in .plt section of tls_arm_trampoline. */
bfd_vma tls_trampoline;
@ -16971,12 +16961,14 @@ elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
/* If we're not using lazy TLS relocations, don't generate the
PLT and GOT entries they require. */
if (!(info->flags & DF_BIND_NOW))
if ((info->flags & DF_BIND_NOW))
htab->root.tlsdesc_plt = 0;
else
{
htab->dt_tlsdesc_got = htab->root.sgot->size;
htab->root.tlsdesc_got = htab->root.sgot->size;
htab->root.sgot->size += 4;
htab->dt_tlsdesc_plt = htab->root.splt->size;
htab->root.tlsdesc_plt = htab->root.splt->size;
htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline);
}
}
@ -17077,7 +17069,7 @@ elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
|| !add_dynamic_entry (DT_JMPREL, 0))
return FALSE;
if (htab->dt_tlsdesc_plt
if (htab->root.tlsdesc_plt
&& (!add_dynamic_entry (DT_TLSDESC_PLT,0)
|| !add_dynamic_entry (DT_TLSDESC_GOT,0)))
return FALSE;
@ -17462,14 +17454,14 @@ elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info
case DT_TLSDESC_PLT:
s = htab->root.splt;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_plt);
+ htab->root.tlsdesc_plt);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_TLSDESC_GOT:
s = htab->root.sgot;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_got);
+ htab->root.tlsdesc_got);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
@ -17580,7 +17572,7 @@ elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info
if (splt->output_section->owner == output_bfd)
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
if (htab->dt_tlsdesc_plt)
if (htab->root.tlsdesc_plt)
{
bfd_vma got_address
= sgot->output_section->vma + sgot->output_offset;
@ -17590,18 +17582,18 @@ elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info
= splt->output_section->vma + splt->output_offset;
arm_put_trampoline (htab, output_bfd,
splt->contents + htab->dt_tlsdesc_plt,
splt->contents + htab->root.tlsdesc_plt,
dl_tlsdesc_lazy_trampoline, 6);
bfd_put_32 (output_bfd,
gotplt_address + htab->dt_tlsdesc_got
- (plt_address + htab->dt_tlsdesc_plt)
gotplt_address + htab->root.tlsdesc_got
- (plt_address + htab->root.tlsdesc_plt)
- dl_tlsdesc_lazy_trampoline[6],
splt->contents + htab->dt_tlsdesc_plt + 24);
splt->contents + htab->root.tlsdesc_plt + 24);
bfd_put_32 (output_bfd,
got_address - (plt_address + htab->dt_tlsdesc_plt)
got_address - (plt_address + htab->root.tlsdesc_plt)
- dl_tlsdesc_lazy_trampoline[7],
splt->contents + htab->dt_tlsdesc_plt + 24 + 4);
splt->contents + htab->root.tlsdesc_plt + 24 + 4);
}
if (htab->tls_trampoline)
@ -18374,14 +18366,15 @@ elf32_arm_output_arch_local_syms (bfd *output_bfd,
}
}
}
if (htab->dt_tlsdesc_plt != 0)
if (htab->root.tlsdesc_plt != 0)
{
/* Mapping symbols for the lazy tls trampoline. */
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->dt_tlsdesc_plt))
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM,
htab->root.tlsdesc_plt))
return FALSE;
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA,
htab->dt_tlsdesc_plt + 24))
htab->root.tlsdesc_plt + 24))
return FALSE;
}
if (htab->tls_trampoline != 0)

20
bfd/elf32-nds32.c
View File

@ -4405,12 +4405,14 @@ nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
/* If we're not using lazy TLS relocations, don't generate the
PLT and GOT entries they require. */
if (!(info->flags & DF_BIND_NOW))
if ((info->flags & DF_BIND_NOW))
htab->root.tlsdesc_plt = 0;
else
{
htab->dt_tlsdesc_got = htab->root.sgot->size;
htab->root.tlsdesc_got = htab->root.sgot->size;
htab->root.sgot->size += 4;
htab->dt_tlsdesc_plt = htab->root.splt->size;
htab->root.tlsdesc_plt = htab->root.splt->size;
htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline);
}
}
@ -4509,7 +4511,7 @@ nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
if (htab->tls_desc_trampoline && plt)
{
if (htab->dt_tlsdesc_plt
if (htab->root.tlsdesc_plt
&& (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
|| !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
return FALSE;
@ -6435,14 +6437,14 @@ nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
case DT_TLSDESC_PLT:
s = htab->root.splt;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_plt);
+ htab->root.tlsdesc_plt);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
case DT_TLSDESC_GOT:
s = htab->root.sgot;
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_got);
+ htab->root.tlsdesc_got);
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
break;
}
@ -6505,14 +6507,14 @@ nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
PLT_ENTRY_SIZE;
}
if (htab->dt_tlsdesc_plt)
if (htab->root.tlsdesc_plt)
{
/* Calculate addresses. */
asection *sgot = sgot = ehtab->sgot;
bfd_vma pltgot = sgotplt->output_section->vma
+ sgotplt->output_offset;
bfd_vma tlsdesc_got = sgot->output_section->vma + sgot->output_offset
+ htab->dt_tlsdesc_got;
+ htab->root.tlsdesc_got;
/* Get GP offset. */
pltgot -= elf_gp (output_bfd) - 4; /* PLTGOT[1] */
@ -6525,7 +6527,7 @@ nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
dl_tlsdesc_lazy_trampoline[5] += 0xfff & pltgot;
/* Insert .plt. */
nds32_put_trampoline (splt->contents + htab->dt_tlsdesc_plt,
nds32_put_trampoline (splt->contents + htab->root.tlsdesc_plt,
dl_tlsdesc_lazy_trampoline,
ARRAY_SIZE (dl_tlsdesc_lazy_trampoline));
}

10
bfd/elf32-nds32.h
View File

@ -138,16 +138,6 @@ struct elf_nds32_link_hash_table
/* Disable if linking a dynamically linked executable. */
int load_store_relax;
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma dt_tlsdesc_plt;
/* The offset into sgot of the GOT entry used by the PLT entry
above. */
bfd_vma dt_tlsdesc_got;
/* Offset in .plt section of tls_nds32_trampoline. */
bfd_vma tls_trampoline;

16
bfd/elf64-x86-64.c
View File

@ -4667,12 +4667,12 @@ elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
+ htab->lazy_plt->plt0_got2_offset));
}
if (htab->tlsdesc_plt)
if (htab->elf.tlsdesc_plt)
{
bfd_put_64 (output_bfd, (bfd_vma) 0,
htab->elf.sgot->contents + htab->tlsdesc_got);
htab->elf.sgot->contents + htab->elf.tlsdesc_got);
memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
memcpy (htab->elf.splt->contents + htab->elf.tlsdesc_plt,
htab->lazy_plt->plt_tlsdesc_entry,
htab->lazy_plt->plt_tlsdesc_entry_size);
@ -4685,10 +4685,10 @@ elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
+ 8
- htab->elf.splt->output_section->vma
- htab->elf.splt->output_offset
- htab->tlsdesc_plt
- htab->elf.tlsdesc_plt
- htab->lazy_plt->plt_tlsdesc_got1_insn_end),
(htab->elf.splt->contents
+ htab->tlsdesc_plt
+ htab->elf.tlsdesc_plt
+ htab->lazy_plt->plt_tlsdesc_got1_offset));
/* Add offset for indirect branch via GOT+TDG, where TDG
stands for htab->tlsdesc_got, subtracting the offset
@ -4696,13 +4696,13 @@ elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
bfd_put_32 (output_bfd,
(htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset
+ htab->tlsdesc_got
+ htab->elf.tlsdesc_got
- htab->elf.splt->output_section->vma
- htab->elf.splt->output_offset
- htab->tlsdesc_plt
- htab->elf.tlsdesc_plt
- htab->lazy_plt->plt_tlsdesc_got2_insn_end),
(htab->elf.splt->contents
+ htab->tlsdesc_plt
+ htab->elf.tlsdesc_plt
+ htab->lazy_plt->plt_tlsdesc_got2_offset));
}
}

51
bfd/elfnn-aarch64.c
View File

@ -2682,20 +2682,9 @@ struct elf_aarch64_link_hash_table
/* JUMP_SLOT relocs for variant PCS symbols may be present. */
int variant_pcs;
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma tlsdesc_plt;
/* The number of bytes in the PLT enty for the TLS descriptor. */
bfd_size_type tlsdesc_plt_entry_size;
/* The GOT offset for the lazy trampoline. Communicated to the
loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
indicates an offset is not allocated. */
bfd_vma dt_tlsdesc_got;
/* Used by local STT_GNU_IFUNC symbols. */
htab_t loc_hash_table;
void * loc_hash_memory;
@ -2932,7 +2921,7 @@ elfNN_aarch64_link_hash_table_create (bfd *abfd)
ret->plt_entry = elfNN_aarch64_small_plt_entry;
ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
ret->obfd = abfd;
ret->dt_tlsdesc_got = (bfd_vma) - 1;
ret->root.tlsdesc_got = (bfd_vma) - 1;
if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
sizeof (struct elf_aarch64_stub_hash_entry)))
@ -8682,7 +8671,7 @@ elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
type. */
/* TLSDESC PLT is now needed, but not yet determined. */
htab->tlsdesc_plt = (bfd_vma) - 1;
htab->root.tlsdesc_plt = (bfd_vma) - 1;
}
if (got_type & GOT_TLS_GD)
@ -8968,7 +8957,7 @@ elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
{
htab->root.srelplt->size += RELOC_SIZE (htab);
/* Note RELOC_COUNT not incremented here! */
htab->tlsdesc_plt = (bfd_vma) - 1;
htab->root.tlsdesc_plt = (bfd_vma) - 1;
}
if (got_type & GOT_TLS_GD)
@ -9011,19 +9000,21 @@ elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
if (htab->root.srelplt)
htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
if (htab->tlsdesc_plt)
if (htab->root.tlsdesc_plt)
{
if (htab->root.splt->size == 0)
htab->root.splt->size += htab->plt_header_size;
/* If we're not using lazy TLS relocations, don't generate the
GOT and PLT entry required. */
if (!(info->flags & DF_BIND_NOW))
if ((info->flags & DF_BIND_NOW))
htab->root.tlsdesc_plt = 0;
else
{
htab->tlsdesc_plt = htab->root.splt->size;
htab->root.tlsdesc_plt = htab->root.splt->size;
htab->root.splt->size += htab->tlsdesc_plt_entry_size;
htab->dt_tlsdesc_got = htab->root.sgot->size;
htab->root.tlsdesc_got = htab->root.sgot->size;
htab->root.sgot->size += GOT_ENTRY_SIZE;
}
}
@ -9129,8 +9120,7 @@ elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
&& !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0))
return FALSE;
if (htab->tlsdesc_plt
&& !(info->flags & DF_BIND_NOW)
if (htab->root.tlsdesc_plt
&& (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
|| !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
return FALSE;
@ -9639,14 +9629,14 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
case DT_TLSDESC_PLT:
s = htab->root.splt;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ htab->tlsdesc_plt;
+ htab->root.tlsdesc_plt;
break;
case DT_TLSDESC_GOT:
s = htab->root.sgot;
BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1);
BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ htab->dt_tlsdesc_got;
+ htab->root.tlsdesc_got;
break;
}
@ -9664,11 +9654,11 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
this_hdr.sh_entsize = htab->plt_entry_size;
if (htab->tlsdesc_plt && !(info->flags & DF_BIND_NOW))
if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW))
{
BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1);
BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
bfd_put_NN (output_bfd, (bfd_vma) 0,
htab->root.sgot->contents + htab->dt_tlsdesc_got);
htab->root.sgot->contents + htab->root.tlsdesc_got);
const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry;
htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
@ -9679,13 +9669,14 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry;
}
memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt,
entry, htab->tlsdesc_plt_entry_size);
{
bfd_vma adrp1_addr =
htab->root.splt->output_section->vma
+ htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
+ htab->root.splt->output_offset
+ htab->root.tlsdesc_plt + 4;
bfd_vma adrp2_addr = adrp1_addr + 4;
@ -9697,10 +9688,10 @@ elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
htab->root.sgotplt->output_section->vma
+ htab->root.sgotplt->output_offset;
bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got;
bfd_byte *plt_entry =
htab->root.splt->contents + htab->tlsdesc_plt;
htab->root.splt->contents + htab->root.tlsdesc_plt;
/* First instruction in BTI enabled PLT stub is a BTI
instruction so skip it. */

18
bfd/elfxx-x86.c
View File

@ -369,7 +369,7 @@ elf_x86_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
htab->elf.srelplt->size += htab->sizeof_reloc;
if (bed->target_id == X86_64_ELF_DATA)
htab->tlsdesc_plt = (bfd_vma) -1;
htab->elf.tlsdesc_plt = (bfd_vma) -1;
}
}
else
@ -1116,7 +1116,7 @@ _bfd_x86_elf_size_dynamic_sections (bfd *output_bfd,
{
htab->elf.srelplt->size += htab->sizeof_reloc;
if (bed->target_id == X86_64_ELF_DATA)
htab->tlsdesc_plt = (bfd_vma) -1;
htab->elf.tlsdesc_plt = (bfd_vma) -1;
}
}
}
@ -1163,22 +1163,22 @@ _bfd_x86_elf_size_dynamic_sections (bfd *output_bfd,
else if (htab->elf.irelplt)
htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
if (htab->tlsdesc_plt)
if (htab->elf.tlsdesc_plt)
{
/* NB: tlsdesc_plt is set only for x86-64. If we're not using
lazy TLS relocations, don't generate the PLT and GOT entries
they require. */
if ((info->flags & DF_BIND_NOW))
htab->tlsdesc_plt = 0;
htab->elf.tlsdesc_plt = 0;
else
{
htab->tlsdesc_got = htab->elf.sgot->size;
htab->elf.tlsdesc_got = htab->elf.sgot->size;
htab->elf.sgot->size += htab->got_entry_size;
/* Reserve room for the initial entry.
FIXME: we could probably do away with it in this case. */
if (htab->elf.splt->size == 0)
htab->elf.splt->size = htab->plt.plt_entry_size;
htab->tlsdesc_plt = htab->elf.splt->size;
htab->elf.tlsdesc_plt = htab->elf.splt->size;
htab->elf.splt->size += htab->plt.plt_entry_size;
}
}
@ -1395,7 +1395,7 @@ _bfd_x86_elf_size_dynamic_sections (bfd *output_bfd,
return FALSE;
}
if (htab->tlsdesc_plt
if (htab->elf.tlsdesc_plt
&& (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
|| !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
return FALSE;
@ -1544,13 +1544,13 @@ _bfd_x86_elf_finish_dynamic_sections (bfd *output_bfd,
case DT_TLSDESC_PLT:
s = htab->elf.splt;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ htab->tlsdesc_plt;
+ htab->elf.tlsdesc_plt;
break;
case DT_TLSDESC_GOT:
s = htab->elf.sgot;
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ htab->tlsdesc_got;
+ htab->elf.tlsdesc_got;
break;
}

10
bfd/elfxx-x86.h
View File

@ -478,10 +478,6 @@ struct elf_x86_link_hash_table
htab_t loc_hash_table;
void * loc_hash_memory;
/* The offset into sgot of the GOT entry used by the PLT entry
above. */
bfd_vma tlsdesc_got;
/* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
bfd_vma next_jump_slot_index;
/* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
@ -499,12 +495,6 @@ struct elf_x86_link_hash_table
is only used for i386. */
bfd_vma next_tls_desc_index;
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. This is only used for x86-64. */
bfd_vma tlsdesc_plt;
/* Value used to fill the unused bytes of the first PLT entry. This
is only used for i386. */
bfd_byte plt0_pad_byte;