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* elf.c (_bfd_elf_make_section_from_shdr): Set SEC_THREAD_LOCAL

Browse Source 
for symbols from SHF_TLS section.
	(_bfd_elf_print_private_bfd_data): Add PT_TLS.
	(elf_fake_sections): Set SHF_TLS for SEC_THREAD_LOCAL sections.
	(map_sections_to_segments): Build PT_TLS segment if necessary.
	(assign_file_positions_for_segments): Likewise.
	(get_program_header_size): Account for PT_TLS segment.
	(swap_out_syms): Set type of BSF_THREAD_LOCAL symbols and symbols from
	SEC_THREAD_LOCAL sections to STT_TLS.
	* reloc.c: Add 386 and IA-64 TLS relocs.
	* section.c (SEC_THREAD_LOCAL): Define.
	(SEC_CONSTRUCTOR_TEXT, SEC_CONSTRUCTOR_DATA, SEC_CONSTRUCTOR_BSS):
	Remove.
	* elflink.h (elf_link_add_object_symbols): Support .tcommon.
	(size_dynamic_sections): If DF_STATIC_TLS, set DF_FLAGS
	unconditionally.
	(struct elf_final_link_info): Add first_tls_sec.
	(elf_bfd_final_link): Set first_tls_sec.
	Compute elf_hash_table (info)->tls_segment.
	(elf_link_output_extsym): Handle STT_TLS symbols.
	(elf_link_input_bfd): Likewise.
	* syms.c (BSF_THREAD_LOCAL): Define.
	* bfd-in2.h: Rebuilt.
	* libbfd.h: Rebuilt.
	* elf32-i386.c (elf_i386_tls_transition, dtpoff_base, tpoff,
	elf_i386_mkobject, elf_i386_object_p): New functions.
	(elf_howto_table): Add TLS relocs.
	(elf_i386_reloc_type_lookup): Support TLS relocs.
	(elf_i386_info_to_howto_rel): Likewise.
	(struct elf_i386_link_hash_entry): Add tls_type.
	(struct elf_i386_obj_tdata): New.
	(elf_i386_hash_entry, elf_i386_tdata, elf_i386_local_got_tls_type):
	New macros.
	(struct elf_i386_link_hash_table): Add tls_ldm_got.
	(link_hash_newfunc): Clear tls_type.
	(elf_i386_check_relocs): Support TLS relocs.
	(elf_i386_gc_sweep_hook): Likewise.
	(allocate_dynrelocs): Likewise.
	(elf_i386_size_dynamic_sections): Likewise.
	(elf_i386_relocate_section): Likewise.
	(elf_i386_finish_dynamic_symbol): Likewise.
	(bfd_elf32_mkobject, elf_backend_object_p): Define.
	* elfxx-ia64.c (struct elfNN_ia64_dyn_sym_info): Add tprel_offset,
	dtpmod_offset, dtprel_offset, tprel_done, dtpmod_done, dtprel_done,
	want_tprel, want_dtpmod, want_dtprel.
	(elfNN_ia64_tprel_base, elfNN_ia64_dtprel_base): New functions.
	(ia64_howto_table): Add TLS relocs, rename R_IA64_LTOFF_TP22 to
	R_IA64_LTOFF_TPREL22.
	(elf_code_to_howto_index): Add TLS relocs.
	(elfNN_ia64_check_relocs): Support TLS relocs.
	(allocate_global_data_got): Account for TLS .got data.
	(allocate_dynrel_entries): Account for TLS dynamic relocations.
	(elfNN_ia64_install_value): Supprt TLS relocs.
	(set_got_entry): Support TLS relocs.
	(elfNN_ia64_relocate_section): Likewise.

	* config/obj-elf.c (elf_common): Renamed from obj_elf_common.
	(obj_elf_common): Call elf_common.
	(obj_elf_tls_common): New function.
	(elf_pseudo_tab): Support .tls_common.
	(special_sections): Add .tdata and .tbss.
	(obj_elf_change_section): Set SEC_THREAD_LOCAL for SHF_TLS
	sections.
	(obj_elf_parse_section_letters): Support T in section flags (SHF_TLS).
	(obj_elf_parse_section_letters): Include T in error message.
	* config/tc-ppc.c (ppc_section_letter): Likewise.
	* config/tc-alpha.c (alpha_elf_section_letter): Likewise.
	(tc_gen_reloc): Handle SEC_THREAD_LOCAL the same way as
	SEC_MERGE.
	* config/tc-sparc.c (md_apply_fix3): Likewise.
	* config/tc-i386.c (tc_i386_fix_adjustable): Add TLS relocs.
	Define them if not BFD_ASSEMBLER.
	(lex_got): Support @TLSGD, @TLSLDM, @GOTTPOFF, @TPOFF, @DTPOFF
	and @NTPOFF.
	(md_apply_fix3): Add TLS relocs.
	* config/tc-ia64.c (enum reloc_func): Add FUNC_DTP_MODULE,
	FUNC_DTP_RELATIVE, FUNC_TP_RELATIVE, FUNC_LT_DTP_MODULE,
	FUNC_LT_DTP_RELATIVE, FUNC_LT_TP_RELATIVE.
	(pseudo_func): Support @dtpmod(), @dtprel() and @tprel().
	(ia64_elf_section_letter): Include T in error message.
	(md_begin): Support TLS operators.
	(md_operand): Likewise.
	(ia64_gen_real_reloc_type): Support TLS relocs.
	* testsuite/gas/i386/tlspic.s: New file.
	* testsuite/gas/i386/tlsd.s: New file.
	* testsuite/gas/i386/tlsnopic.s: New file.
	* testsuite/gas/i386/tlsd.d: New file.
	* testsuite/gas/i386/tlsnopic.d: New file.
	* testsuite/gas/i386/tlspic.d: New file.
	* testsuite/gas/i386/i386.exp: Add tlsd, tlsnopic and tlspic tests.
	* testsuite/gas/ia64/tls.s: New file.
	* testsuite/gas/ia64/tls.d: New file.
	* testsuite/gas/ia64/ia64.exp: Add tls test.
	* write.c (adjust_reloc_syms): Don't change symbols in
	SEC_THREAD_LOCAL sections to STT_SECTION + addend.

	* elf/common.h (PT_TLS, SHF_TLS, STT_TLS, DF_STATIC_TLS): Define.
	* elf/ia64.h (R_IA64_LTOFF_TPREL22): Renamed from R_IA64_LTOFF_TP22.
	* elf/i386.h: Add TLS relocs.

	* scripttempl/elf.sc: Add .rel{,a}.t{bss,data}, .tdata and .tbss.
	* ldlang.c (lang_add_section): Set SEC_THREAD_LOCAL for
	output section if necessary.  Handle .tbss.
	(lang_size_sections): Clear _raw_size for .tbss section
	(it allocates space in PT_TLS segment only).
	* ldwrite.c (build_link_order): Build link order for .tbss too.

	* readelf.c (get_segment_type): Add PT_TLS.
	(get_elf_section_flags): Add SHF_TLS.
	(get_dynamic_flags): Optimize.  Add DF_STATIC_TLS.
	(process_dynamic_segment): Use puts instead of printf.
	(get_symbol_type): Support STT_TLS.
	* objdump.c (dump_section_header): Remove SEC_CONSTRUCTOR_TEXT,
	SEC_CONSTRUCTOR_DATA, SEC_CONSTRUCTOR_BSS.
	Add SEC_THREAD_LOCAL.
This commit is contained in:
Jakub Jelinek 2002-05-23 13:12:53 +00:00
parent baf0cc5e96
commit 13ae64f3c7
40 changed files with 1911 additions and 123 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
bfd/ChangeLog
View File

@ -1,3 +1,61 @@
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* elf.c (_bfd_elf_make_section_from_shdr): Set SEC_THREAD_LOCAL
for symbols from SHF_TLS section.
(_bfd_elf_print_private_bfd_data): Add PT_TLS.
(elf_fake_sections): Set SHF_TLS for SEC_THREAD_LOCAL sections.
(map_sections_to_segments): Build PT_TLS segment if necessary.
(assign_file_positions_for_segments): Likewise.
(get_program_header_size): Account for PT_TLS segment.
(swap_out_syms): Set type of BSF_THREAD_LOCAL symbols and symbols from
SEC_THREAD_LOCAL sections to STT_TLS.
* reloc.c: Add 386 and IA-64 TLS relocs.
* section.c (SEC_THREAD_LOCAL): Define.
(SEC_CONSTRUCTOR_TEXT, SEC_CONSTRUCTOR_DATA, SEC_CONSTRUCTOR_BSS):
Remove.
* elflink.h (elf_link_add_object_symbols): Support .tcommon.
(size_dynamic_sections): If DF_STATIC_TLS, set DF_FLAGS
unconditionally.
(struct elf_final_link_info): Add first_tls_sec.
(elf_bfd_final_link): Set first_tls_sec.
Compute elf_hash_table (info)->tls_segment.
(elf_link_output_extsym): Handle STT_TLS symbols.
(elf_link_input_bfd): Likewise.
* syms.c (BSF_THREAD_LOCAL): Define.
* bfd-in2.h: Rebuilt.
* libbfd.h: Rebuilt.
* elf32-i386.c (elf_i386_tls_transition, dtpoff_base, tpoff,
elf_i386_mkobject, elf_i386_object_p): New functions.
(elf_howto_table): Add TLS relocs.
(elf_i386_reloc_type_lookup): Support TLS relocs.
(elf_i386_info_to_howto_rel): Likewise.
(struct elf_i386_link_hash_entry): Add tls_type.
(struct elf_i386_obj_tdata): New.
(elf_i386_hash_entry, elf_i386_tdata, elf_i386_local_got_tls_type):
New macros.
(struct elf_i386_link_hash_table): Add tls_ldm_got.
(link_hash_newfunc): Clear tls_type.
(elf_i386_check_relocs): Support TLS relocs.
(elf_i386_gc_sweep_hook): Likewise.
(allocate_dynrelocs): Likewise.
(elf_i386_size_dynamic_sections): Likewise.
(elf_i386_relocate_section): Likewise.
(elf_i386_finish_dynamic_symbol): Likewise.
(bfd_elf32_mkobject, elf_backend_object_p): Define.
* elfxx-ia64.c (struct elfNN_ia64_dyn_sym_info): Add tprel_offset,
dtpmod_offset, dtprel_offset, tprel_done, dtpmod_done, dtprel_done,
want_tprel, want_dtpmod, want_dtprel.
(elfNN_ia64_tprel_base, elfNN_ia64_dtprel_base): New functions.
(ia64_howto_table): Add TLS relocs, rename R_IA64_LTOFF_TP22 to
R_IA64_LTOFF_TPREL22.
(elf_code_to_howto_index): Add TLS relocs.
(elfNN_ia64_check_relocs): Support TLS relocs.
(allocate_global_data_got): Account for TLS .got data.
(allocate_dynrel_entries): Account for TLS dynamic relocations.
(elfNN_ia64_install_value): Supprt TLS relocs.
(set_got_entry): Support TLS relocs.
(elfNN_ia64_relocate_section): Likewise.
2002-05-23 Nick Clifton <nickc@cambridge.redhat.com>
* elf32-arm.h (elf32_arm_final_link_relocate): For the Thumb

42
bfd/bfd-in2.h
View File

@ -1068,12 +1068,6 @@ typedef struct sec
standard data. */
#define SEC_CONSTRUCTOR 0x100
/* The section is a constructor, and should be placed at the
end of the text, data, or bss section(?). */
#define SEC_CONSTRUCTOR_TEXT 0x1100
#define SEC_CONSTRUCTOR_DATA 0x2100
#define SEC_CONSTRUCTOR_BSS 0x3100
/* The section has contents - a data section could be
<<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
<<SEC_HAS_CONTENTS>> */
@ -1094,6 +1088,9 @@ typedef struct sec
sections. */
#define SEC_COFF_SHARED_LIBRARY 0x800
/* The section contains thread local data. */
#define SEC_THREAD_LOCAL 0x1000
/* The section has GOT references. This flag is only for the
linker, and is currently only used by the elf32-hppa back end.
It will be set if global offset table references were detected
@ -2211,6 +2208,15 @@ to compensate for the borrow when the low bits are added. */
BFD_RELOC_386_RELATIVE,
BFD_RELOC_386_GOTOFF,
BFD_RELOC_386_GOTPC,
BFD_RELOC_386_TLS_LE,
BFD_RELOC_386_TLS_GD,
BFD_RELOC_386_TLS_LDM,
BFD_RELOC_386_TLS_LDO_32,
BFD_RELOC_386_TLS_IE_32,
BFD_RELOC_386_TLS_LE_32,
BFD_RELOC_386_TLS_DTPMOD32,
BFD_RELOC_386_TLS_DTPOFF32,
BFD_RELOC_386_TLS_TPOFF32,
/* x86-64/elf relocations */
BFD_RELOC_X86_64_GOT32,
@ -2922,12 +2928,25 @@ this offset in the reloc's section offset. */
BFD_RELOC_IA64_IPLTMSB,
BFD_RELOC_IA64_IPLTLSB,
BFD_RELOC_IA64_COPY,
BFD_RELOC_IA64_TPREL22,
BFD_RELOC_IA64_TPREL64MSB,
BFD_RELOC_IA64_TPREL64LSB,
BFD_RELOC_IA64_LTOFF_TP22,
BFD_RELOC_IA64_LTOFF22X,
BFD_RELOC_IA64_LDXMOV,
BFD_RELOC_IA64_TPREL14,
BFD_RELOC_IA64_TPREL22,
BFD_RELOC_IA64_TPREL64I,
BFD_RELOC_IA64_TPREL64MSB,
BFD_RELOC_IA64_TPREL64LSB,
BFD_RELOC_IA64_LTOFF_TPREL22,
BFD_RELOC_IA64_DTPMOD64MSB,
BFD_RELOC_IA64_DTPMOD64LSB,
BFD_RELOC_IA64_LTOFF_DTPMOD22,
BFD_RELOC_IA64_DTPREL14,
BFD_RELOC_IA64_DTPREL22,
BFD_RELOC_IA64_DTPREL64I,
BFD_RELOC_IA64_DTPREL32MSB,
BFD_RELOC_IA64_DTPREL32LSB,
BFD_RELOC_IA64_DTPREL64MSB,
BFD_RELOC_IA64_DTPREL64LSB,
BFD_RELOC_IA64_LTOFF_DTPREL22,
/* Motorola 68HC11 reloc.
This is the 8 bits high part of an absolute address. */
@ -3138,6 +3157,9 @@ typedef struct symbol_cache_entry
as well. */
#define BSF_DEBUGGING_RELOC 0x20000
/* This symbol is thread local. Used in ELF. */
#define BSF_THREAD_LOCAL 0x40000
flagword flags;
/* A pointer to the section to which this symbol is

11
bfd/elf-bfd.h
View File

@ -234,6 +234,14 @@ enum elf_link_info_type
ELF_INFO_TYPE_LAST
};
/* Cached start, size and alignment of PT_TLS segment. */
struct elf_link_tls_segment
{
bfd_vma start;
bfd_size_type size;
unsigned int align;
};
/* ELF linker hash table. */
struct elf_link_hash_table
@ -286,6 +294,9 @@ struct elf_link_hash_table
/* A linked list of DT_RPATH/DT_RUNPATH names found in dynamic
objects included in the link. */
struct bfd_link_needed_list *runpath;
/* Cached start, size and alignment of PT_TLS segment. */
struct elf_link_tls_segment *tls_segment;
};
/* Look up an entry in an ELF linker hash table. */

71
bfd/elf.c
View File

@ -591,6 +591,8 @@ _bfd_elf_make_section_from_shdr (abfd, hdr, name)
if (hdr->sh_flags & SHF_GROUP)
if (!setup_group (abfd, hdr, newsect))
return false;
if ((hdr->sh_flags & SHF_TLS) != 0)
flags |= SEC_THREAD_LOCAL;
/* The debugging sections appear to be recognized only by name, not
any sort of flag. */
@ -883,6 +885,7 @@ _bfd_elf_print_private_bfd_data (abfd, farg)
case PT_NOTE: pt = "NOTE"; break;
case PT_SHLIB: pt = "SHLIB"; break;
case PT_PHDR: pt = "PHDR"; break;
case PT_TLS: pt = "TLS"; break;
case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
}
@ -2274,6 +2277,8 @@ elf_fake_sections (abfd, asect, failedptrarg)
}
if (elf_group_name (asect) != NULL)
this_hdr->sh_flags |= SHF_GROUP;
if ((asect->flags & SEC_THREAD_LOCAL) != 0)
this_hdr->sh_flags |= SHF_TLS;
/* Check for processor-specific section types. */
if (bed->elf_backend_fake_sections
@ -2956,6 +2961,8 @@ map_sections_to_segments (abfd)
asection **hdrpp;
boolean phdr_in_segment = true;
boolean writable;
int tls_count = 0;
asection *first_tls = NULL;
asection *dynsec, *eh_frame_hdr;
bfd_size_type amt;
@ -3194,6 +3201,39 @@ map_sections_to_segments (abfd)
*pm = m;
pm = &m->next;
}
if (s->flags & SEC_THREAD_LOCAL)
{
if (! tls_count)
first_tls = s;
tls_count++;
}
}
/* If there are any SHF_TLS output sections, add PT_TLS segment. */
if (tls_count > 0)
{
int i;
amt = sizeof (struct elf_segment_map);
amt += (tls_count - 1) * sizeof (asection *);
m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
if (m == NULL)
goto error_return;
m->next = NULL;
m->p_type = PT_TLS;
m->count = tls_count;
/* Mandated PF_R. */
m->p_flags = PF_R;
m->p_flags_valid = 1;
for (i = 0; i < tls_count; ++i)
{
BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
m->sections[i] = first_tls;
first_tls = first_tls->next;
}
*pm = m;
pm = &m->next;
}
/* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
@ -3618,6 +3658,20 @@ Error: First section in segment (%s) starts at 0x%x whereas the segment starts a
if ((flags & SEC_LOAD) != 0)
p->p_filesz += sec->_raw_size;
if (p->p_type == PT_TLS
&& sec->_raw_size == 0
&& (sec->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
bfd_vma tbss_size = 0;
for (o = sec->link_order_head; o != NULL; o = o->next)
if (tbss_size < o->offset + o->size)
tbss_size = o->offset + o->size;
p->p_memsz += tbss_size;
}
if (align > p->p_align
&& (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
p->p_align = align;
@ -3752,6 +3806,16 @@ get_program_header_size (abfd)
}
}
for (s = abfd->sections; s != NULL; s = s->next)
{
if (s->flags & SEC_THREAD_LOCAL)
{
/* We need a PT_TLS segment. */
++segs;
break;
}
}
/* Let the backend count up any program headers it might need. */
if (bed->elf_backend_additional_program_headers)
{
@ -5045,13 +5109,18 @@ swap_out_syms (abfd, sttp, relocatable_p)
sym.st_shndx = shndx;
}
if ((flags & BSF_FUNCTION) != 0)
if ((flags & BSF_THREAD_LOCAL) != 0)
type = STT_TLS;
else if ((flags & BSF_FUNCTION) != 0)
type = STT_FUNC;
else if ((flags & BSF_OBJECT) != 0)
type = STT_OBJECT;
else
type = STT_NOTYPE;
if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
type = STT_TLS;
/* Processor-specific types */
if (type_ptr != NULL
&& bed->elf_backend_get_symbol_type)

702
bfd/elf32-i386.c
View File

@ -46,6 +46,13 @@ static boolean elf_i386_create_dynamic_sections
PARAMS((bfd *, struct bfd_link_info *));
static void elf_i386_copy_indirect_symbol
PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
static int elf_i386_tls_transition
PARAMS ((struct bfd_link_info *, int, int));
static boolean elf_i386_mkobject
PARAMS((bfd *));
static boolean elf_i386_object_p
PARAMS((bfd *));
static boolean elf_i386_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
@ -65,6 +72,10 @@ static boolean elf_i386_fake_sections
PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
static 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 boolean elf_i386_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
@ -121,9 +132,18 @@ static reloc_howto_type elf_howto_table[]=
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_16 - R_386_standard)
#define R_386_ext_offset ((unsigned int) R_386_TLS_LE - R_386_standard)
/* The remaining relocs are a GNU extension. */
HOWTO(R_386_TLS_LE, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LE",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_GD, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_GD",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_LDM, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LDM",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_16, 0, 1, 16, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_16",
true, 0xffff, 0xffff, false),
@ -137,9 +157,31 @@ static reloc_howto_type elf_howto_table[]=
bfd_elf_generic_reloc, "R_386_PC8",
true, 0xff, 0xff, true),
/* Another gap. */
#define R_386_ext ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset)
#define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_ext)
#define R_386_tls_offset ((unsigned int) 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),
HOWTO(R_386_TLS_IE_32, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_IE_32",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_LE_32, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_LE_32",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
true, 0xffffffff, 0xffffffff, false),
HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, false, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
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)
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_386_GNU_VTINHERIT, /* type */
@ -237,6 +279,18 @@ elf_i386_reloc_type_lookup (abfd, code)
return &elf_howto_table[(unsigned int) R_386_GOTPC ];
/* The remaining relocs are a GNU extension. */
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];
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];
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];
case BFD_RELOC_16:
TRACE ("BFD_RELOC_16");
return &elf_howto_table[(unsigned int) R_386_16 - R_386_ext_offset];
@ -253,6 +307,31 @@ elf_i386_reloc_type_lookup (abfd, code)
TRACE ("BFD_RELOC_8_PCREL");
return &elf_howto_table[(unsigned int) 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];
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];
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];
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];
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];
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];
case BFD_RELOC_VTABLE_INHERIT:
TRACE ("BFD_RELOC_VTABLE_INHERIT");
return &elf_howto_table[(unsigned int) R_386_GNU_VTINHERIT
@ -292,8 +371,10 @@ elf_i386_info_to_howto_rel (abfd, cache_ptr, dst)
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_vt_offset) - R_386_ext
>= R_386_vt - R_386_ext))
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
>= R_386_tls - R_386_ext)
&& ((indx = r_type - R_386_vt_offset) - R_386_tls
>= R_386_vt - R_386_tls))
{
(*_bfd_error_handler) (_("%s: invalid relocation type %d"),
bfd_archive_filename (abfd), (int) r_type);
@ -481,8 +562,54 @@ struct elf_i386_link_hash_entry
/* Track dynamic relocs copied for this symbol. */
struct elf_i386_dyn_relocs *dyn_relocs;
enum {
GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE
} tls_type;
};
#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
struct elf_i386_obj_tdata
{
struct elf_obj_tdata root;
/* tls_type for each local got entry. */
char *local_got_tls_type;
};
#define elf_i386_tdata(abfd) \
((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
#define elf_i386_local_got_tls_type(abfd) \
(elf_i386_tdata (abfd)->local_got_tls_type)
static boolean
elf_i386_mkobject (abfd)
bfd *abfd;
{
bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
abfd->tdata.any = bfd_zalloc (abfd, amt);
if (abfd->tdata.any == NULL)
return false;
return true;
}
static boolean
elf_i386_object_p (abfd)
bfd *abfd;
{
/* Allocate our special target data. */
struct elf_i386_obj_tdata *new_tdata;
bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
new_tdata = bfd_zalloc (abfd, amt);
if (new_tdata == NULL)
return false;
new_tdata->root = *abfd->tdata.elf_obj_data;
abfd->tdata.any = new_tdata;
return true;
}
/* i386 ELF linker hash table. */
struct elf_i386_link_hash_table
@ -498,6 +625,11 @@ struct elf_i386_link_hash_table
asection *sdynbss;
asection *srelbss;
union {
bfd_signed_vma refcount;
bfd_vma offset;
} tls_ldm_got;
/* Small local sym to section mapping cache. */
struct sym_sec_cache sym_sec;
};
@ -533,6 +665,7 @@ link_hash_newfunc (entry, table, string)
eh = (struct elf_i386_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
}
return entry;
@ -678,6 +811,29 @@ elf_i386_copy_indirect_symbol (dir, ind)
_bfd_elf_link_hash_copy_indirect (dir, ind);
}
static int
elf_i386_tls_transition (info, r_type, is_local)
struct bfd_link_info *info;
int r_type;
int is_local;
{
if (info->shared)
return r_type;
switch (r_type)
{
case R_386_TLS_GD:
case R_386_TLS_IE_32:
if (is_local)
return R_386_TLS_LE_32;
return R_386_TLS_IE_32;
case R_386_TLS_LDM:
return R_386_TLS_LE_32;
}
return r_type;
}
/* Look through the relocs for a section during the first phase, and
calculate needed space in the global offset table, procedure linkage
table, and dynamic reloc sections. */
@ -708,10 +864,12 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
{
@ -726,38 +884,86 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
switch (ELF32_R_TYPE (rel->r_info))
r_type = elf_i386_tls_transition (info, r_type, h == NULL);
switch (r_type)
{
case R_386_TLS_IE_32:
if (info->shared)
info->flags |= DF_STATIC_TLS;
/* FALLTHROUGH */
case R_386_GOT32:
case R_386_TLS_GD:
/* This symbol requires a global offset table entry. */
if (h != NULL)
{
h->got.refcount += 1;
}
else
{
bfd_signed_vma *local_got_refcounts;
{
int tls_type, old_tls_type;
/* This is a global offset table entry for a local symbol. */
local_got_refcounts = elf_local_got_refcounts (abfd);
if (local_got_refcounts == NULL)
{
bfd_size_type size;
switch (r_type)
{
default:
case R_386_GOT32: tls_type = GOT_NORMAL; break;
case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
case R_386_TLS_IE_32: tls_type = GOT_TLS_IE; break;
}
size = symtab_hdr->sh_info;
size *= sizeof (bfd_signed_vma);
local_got_refcounts = ((bfd_signed_vma *)
bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
if (h != NULL)
{
h->got.refcount += 1;
old_tls_type = elf_i386_hash_entry(h)->tls_type;
}
else
{
bfd_signed_vma *local_got_refcounts;
/* This is a global offset table entry for a local symbol. */
local_got_refcounts = elf_local_got_refcounts (abfd);
if (local_got_refcounts == NULL)
{
bfd_size_type size;
size = symtab_hdr->sh_info;
size *= (sizeof (bfd_signed_vma) + sizeof(char));
local_got_refcounts = ((bfd_signed_vma *)
bfd_zalloc (abfd, size));
if (local_got_refcounts == NULL)
return false;
elf_local_got_refcounts (abfd) = local_got_refcounts;
elf_i386_local_got_tls_type (abfd)
= (char *) (local_got_refcounts + symtab_hdr->sh_info);
}
local_got_refcounts[r_symndx] += 1;
old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
}
/* If a TLS symbol is accessed using IE at least once,
there is no point to use dynamic model for it. */
if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
&& (old_tls_type != GOT_TLS_GD || tls_type != GOT_TLS_IE))
{
if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
tls_type = GOT_TLS_IE;
else
{
(*_bfd_error_handler)
(_("%s: `%s' accessed both as normal and thread local symbol"),
bfd_archive_filename (abfd), h->root.root.string);
return false;
elf_local_got_refcounts (abfd) = local_got_refcounts;
}
local_got_refcounts[r_symndx] += 1;
}
}
}
if (old_tls_type != tls_type)
{
if (h != NULL)
elf_i386_hash_entry (h)->tls_type = tls_type;
else
elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
/* Fall through */
case R_386_GOTOFF:
case R_386_GOTPC:
create_got:
if (htab->sgot == NULL)
{
if (htab->elf.dynobj == NULL)
@ -767,6 +973,10 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
}
break;
case R_386_TLS_LDM:
htab->tls_ldm_got.refcount += 1;
goto create_got;
case R_386_PLT32:
/* This symbol requires a procedure linkage table entry. We
actually build the entry in adjust_dynamic_symbol,
@ -824,7 +1034,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
symbol. */
if ((info->shared
&& (sec->flags & SEC_ALLOC) != 0
&& (ELF32_R_TYPE (rel->r_info) != R_386_PC32
&& (r_type != R_386_PC32
|| (h != NULL
&& (! info->symbolic
|| h->root.type == bfd_link_hash_defweak
@ -923,7 +1133,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
}
p->count += 1;
if (ELF32_R_TYPE (rel->r_info) == R_386_PC32)
if (r_type == R_386_PC32)
p->pc_count += 1;
}
break;
@ -942,6 +1152,16 @@ elf_i386_check_relocs (abfd, info, sec, relocs)
return false;
break;
case R_386_TLS_LE_32:
case R_386_TLS_LE:
if (info->shared)
{
(*_bfd_error_handler) (_("%s: TLS local exec code cannot be linked into shared objects"),
bfd_archive_filename (abfd));
return false;
}
break;
default:
break;
}
@ -1016,11 +1236,18 @@ elf_i386_gc_sweep_hook (abfd, info, sec, relocs)
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
switch (ELF32_R_TYPE (rel->r_info))
switch (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_GOT32:
case R_386_GOTOFF:
case R_386_GOTPC:
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
{
@ -1319,10 +1546,18 @@ allocate_dynrelocs (h, inf)
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
}
if (h->got.refcount > 0)
/* If R_386_TLS_IE_32 symbol is now local to the binary,
make it a R_386_TLS_LE_32 requiring no TLS entry. */
if (h->got.refcount > 0
&& !info->shared
&& h->dynindx == -1
&& elf_i386_hash_entry(h)->tls_type == GOT_TLS_IE)
h->got.offset = (bfd_vma) -1;
else if (h->got.refcount > 0)
{
asection *s;
boolean dyn;
int tls_type = elf_i386_hash_entry(h)->tls_type;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
@ -1336,8 +1571,18 @@ allocate_dynrelocs (h, inf)
s = htab->sgot;
h->got.offset = s->_raw_size;
s->_raw_size += 4;
/* R_386_TLS_GD needs 2 consecutive GOT slots. */
if (tls_type == GOT_TLS_GD)
s->_raw_size += 4;
dyn = htab->elf.dynamic_sections_created;
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
/* R_386_TLS_IE_32 needs one dynamic relocation,
R_386_TLS_GD needs one if local symbol and two if global. */
if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
|| tls_type == GOT_TLS_IE)
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))
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
}
else
@ -1483,6 +1728,7 @@ elf_i386_size_dynamic_sections (output_bfd, info)
{
bfd_signed_vma *local_got;
bfd_signed_vma *end_local_got;
char *local_tls_type;
bfd_size_type locsymcount;
Elf_Internal_Shdr *symtab_hdr;
asection *srel;
@ -1524,15 +1770,20 @@ elf_i386_size_dynamic_sections (output_bfd, info)
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
locsymcount = symtab_hdr->sh_info;
end_local_got = local_got + locsymcount;
local_tls_type = elf_i386_local_got_tls_type (ibfd);
s = htab->sgot;
srel = htab->srelgot;
for (; local_got < end_local_got; ++local_got)
for (; local_got < end_local_got; ++local_got, ++local_tls_type)
{
if (*local_got > 0)
{
*local_got = s->_raw_size;
s->_raw_size += 4;
if (info->shared)
if (*local_tls_type == GOT_TLS_GD)
s->_raw_size += 4;
if (info->shared
|| *local_tls_type == GOT_TLS_GD
|| *local_tls_type == GOT_TLS_IE)
srel->_raw_size += sizeof (Elf32_External_Rel);
}
else
@ -1540,6 +1791,17 @@ elf_i386_size_dynamic_sections (output_bfd, info)
}
}
if (htab->tls_ldm_got.refcount > 0)
{
/* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
relocs. */
htab->tls_ldm_got.offset = htab->sgot->_raw_size;
htab->sgot->_raw_size += 8;
htab->srelgot->_raw_size += sizeof (Elf32_External_Rel);
}
else
htab->tls_ldm_got.offset = -1;
/* Allocate global sym .plt and .got entries, and space for global
sym dynamic relocs. */
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
@ -1685,6 +1947,34 @@ elf_i386_fake_sections (abfd, hdr, sec)
return true;
}
/* Return the base VMA address which should be subtracted from real addresses
when resolving @dtpoff relocation.
This is PT_TLS segment p_vaddr. */
static bfd_vma
dtpoff_base (info)
struct bfd_link_info *info;
{
BFD_ASSERT (elf_hash_table (info)->tls_segment != NULL);
return elf_hash_table (info)->tls_segment->start;
}
/* Return the relocation value for @tpoff relocation
if STT_TLS virtual address is ADDRESS. */
static bfd_vma
tpoff (info, address)
struct bfd_link_info *info;
bfd_vma address;
{
struct elf_link_tls_segment *tls_segment
= elf_hash_table (info)->tls_segment;
BFD_ASSERT (tls_segment != NULL);
return (align_power (tls_segment->size, tls_segment->align)
+ tls_segment->start - address);
}
/* Relocate an i386 ELF section. */
static boolean
@ -1715,7 +2005,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
unsigned int r_type;
reloc_howto_type *howto;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
@ -1726,6 +2016,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
boolean unresolved_reloc;
bfd_reloc_status_type r;
unsigned int indx;
int tls_type;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_386_GNU_VTINHERIT
@ -1733,8 +2024,10 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
continue;
if ((indx = (unsigned) r_type) >= R_386_standard
&& ((indx = (unsigned) r_type - R_386_ext_offset) - R_386_standard
>= R_386_ext - 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_386_tls - R_386_ext))
{
bfd_set_error (bfd_error_bad_value);
return false;
@ -2118,6 +2411,330 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section,
}
break;
case R_386_TLS_GD:
case R_386_TLS_IE_32:
r_type = elf_i386_tls_transition (info, r_type, h == NULL);
tls_type = GOT_UNKNOWN;
if (h == NULL && local_got_offsets)
tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
else if (h != NULL)
{
tls_type = elf_i386_hash_entry(h)->tls_type;
if (!info->shared && h->dynindx == -1 && tls_type == GOT_TLS_IE)
r_type = R_386_TLS_LE_32;
}
if (r_type == R_386_TLS_GD && tls_type == GOT_TLS_IE)
r_type = R_386_TLS_IE_32;
if (r_type == R_386_TLS_LE_32)
{
BFD_ASSERT (unresolved_reloc == false);
if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
{
unsigned int val, type;
bfd_vma roff;
/* GD->LE transition. */
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
BFD_ASSERT (type == 0x8d || type == 0x04);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
roff = rel->r_offset + 5;
val = bfd_get_8 (input_bfd,
contents + rel->r_offset - 1);
if (type == 0x04)
{
/* leal foo(,%reg,1), %eax; call ___tls_get_addr
Change it into:
movl %gs:0, %eax; subl $foo@tpoff, %eax
(6 byte form of subl). */
BFD_ASSERT (rel->r_offset >= 3);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset - 3)
== 0x8d);
BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
memcpy (contents + rel->r_offset - 3,
"\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
}
else
{
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
if (rel->r_offset + 10 <= input_section->_raw_size
&& bfd_get_8 (input_bfd,
contents + rel->r_offset + 9) == 0x90)
{
/* leal foo(%reg), %eax; call ___tls_get_addr; nop
Change it into:
movl %gs:0, %eax; subl $foo@tpoff, %eax
(6 byte form of subl). */
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
roff = rel->r_offset + 6;
}
else
{
/* leal foo(%reg), %eax; call ___tls_get_addr
Change it into:
movl %gs:0, %eax; subl $foo@tpoff, %eax
(5 byte form of subl). */
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
}
}
bfd_put_32 (output_bfd, tpoff (info, relocation),
contents + roff);
/* Skip R_386_PLT32. */
rel++;
continue;
}
else
{
unsigned int val, type;
/* IE->LE transition:
Originally it can be either:
subl foo(%reg1), %reg2
or
movl foo(%reg1), %reg2
We change it into:
subl $foo, %reg2
or
movl $foo, %reg2 (6 byte form) */
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
BFD_ASSERT (rel->r_offset + 4 <= input_section->_raw_size);
if (type == 0x8b)
{
/* movl */
BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
bfd_put_8 (output_bfd, 0xc7,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
}
else if (type == 0x2b)
{
/* subl */
BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
bfd_put_8 (output_bfd, 0x81,
contents + rel->r_offset - 2);
bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
contents + rel->r_offset - 1);
}
else
BFD_FAIL ();
bfd_put_32 (output_bfd, tpoff (info, relocation),
contents + rel->r_offset);
continue;
}
}
if (htab->sgot == NULL)
abort ();
if (h != NULL)
off = h->got.offset;
else
{
if (local_got_offsets == NULL)
abort ();
off = local_got_offsets[r_symndx];
}
if ((off & 1) != 0)
off &= ~1;
else
{
Elf_Internal_Rel outrel;
Elf32_External_Rel *loc;
int dr_type, indx;
if (htab->srelgot == NULL)
abort ();
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset + off);
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off);
indx = h && h->dynindx != -1 ? h->dynindx : 0;
if (r_type == R_386_TLS_GD)
dr_type = R_386_TLS_DTPMOD32;
else
dr_type = R_386_TLS_TPOFF32;
outrel.r_info = ELF32_R_INFO (indx, dr_type);
loc = (Elf32_External_Rel *) htab->srelgot->contents;
loc += htab->srelgot->reloc_count++;
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
if (r_type == R_386_TLS_GD)
{
if (indx == 0)
{
BFD_ASSERT (unresolved_reloc == false);
bfd_put_32 (output_bfd,
relocation - dtpoff_base (info),
htab->sgot->contents + off + 4);
}
else
{
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (indx,
R_386_TLS_DTPOFF32);
outrel.r_offset += 4;
htab->srelgot->reloc_count++;
loc++;
bfd_elf32_swap_reloc_out (output_bfd, &outrel,
loc);
}
}
if (h != NULL)
h->got.offset |= 1;
else
local_got_offsets[r_symndx] |= 1;
}
if (off >= (bfd_vma) -2)
abort ();
if (r_type == ELF32_R_TYPE (rel->r_info))
{
relocation = htab->sgot->output_offset + off;
unresolved_reloc = false;
}
else
{
unsigned int val, type;
bfd_vma roff;
/* GD->IE transition. */
BFD_ASSERT (rel->r_offset >= 2);
type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
BFD_ASSERT (type == 0x8d || type == 0x04);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
roff = rel->r_offset - 3;
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
if (type == 0x04)
{
/* leal foo(,%reg,1), %eax; call ___tls_get_addr
Change it into:
movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
BFD_ASSERT (rel->r_offset >= 3);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset - 3)
== 0x8d);
BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
val >>= 3;
}
else
{
/* leal foo(%reg), %eax; call ___tls_get_addr; nop
Change it into:
movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */
BFD_ASSERT (rel->r_offset + 10 <= input_section->_raw_size);
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
BFD_ASSERT (bfd_get_8 (input_bfd,
contents + rel->r_offset + 9)
== 0x90);
roff = rel->r_offset - 2;
}
memcpy (contents + roff,
"\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
contents[roff + 7] = 0x80 | (val & 7);
bfd_put_32 (output_bfd, htab->sgot->output_offset + off,
contents + roff + 8);
/* Skip R_386_PLT32. */
rel++;
continue;
}
break;
case R_386_TLS_LDM:
if (! info->shared)
{
unsigned int val;
/* LD->LE transition:
Ensure it is:
leal foo(%reg), %eax; call ___tls_get_addr.
We change it into:
movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */
BFD_ASSERT (rel->r_offset >= 2);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
== 0x8d);
val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
BFD_ASSERT (rel->r_offset + 9 <= input_section->_raw_size);
BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
== 0xe8);
BFD_ASSERT (rel + 1 < relend);
BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
memcpy (contents + rel->r_offset - 2,
"\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
/* Skip R_386_PLT32. */
rel++;
continue;
}
if (htab->sgot == NULL)
abort ();
off = htab->tls_ldm_got.offset;
if (off & 1)
off &= ~1;
else
{
Elf_Internal_Rel outrel;
Elf32_External_Rel *loc;
if (htab->srelgot == NULL)
abort ();
outrel.r_offset = (htab->sgot->output_section->vma
+ htab->sgot->output_offset + off);
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off);
bfd_put_32 (output_bfd, 0,
htab->sgot->contents + off + 4);
outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
loc = (Elf32_External_Rel *) htab->srelgot->contents;
loc += htab->srelgot->reloc_count++;
bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
htab->tls_ldm_got.offset |= 1;
}
relocation = htab->sgot->output_offset + off;
unresolved_reloc = false;
break;
case R_386_TLS_LDO_32:
if (info->shared)
relocation -= dtpoff_base (info);
else
/* When converting LDO to LE, we must negate. */
relocation = -tpoff (info, relocation);
break;
case R_386_TLS_LE_32:
relocation = tpoff (info, relocation);
break;
case R_386_TLS_LE:
relocation = -tpoff (info, relocation);
break;
default:
break;
}
@ -2273,7 +2890,9 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym)
}
}
if (h->got.offset != (bfd_vma) -1)
if (h->got.offset != (bfd_vma) -1
&& elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD
&& elf_i386_hash_entry(h)->tls_type != GOT_TLS_IE)
{
Elf_Internal_Rel rel;
Elf32_External_Rel *loc;
@ -2505,6 +3124,9 @@ elf_i386_finish_dynamic_sections (output_bfd, info)
#define elf_info_to_howto elf_i386_info_to_howto
#define elf_info_to_howto_rel elf_i386_info_to_howto_rel
#define bfd_elf32_mkobject elf_i386_mkobject
#define elf_backend_object_p elf_i386_object_p
#define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name
#define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create
#define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup

96
bfd/elflink.h
View File

@ -1723,7 +1723,23 @@ elf_link_add_object_symbols (abfd, info)
if (name == (const char *) NULL)
goto error_return;
if (add_symbol_hook)
if (sym.st_shndx == SHN_COMMON && ELF_ST_TYPE (sym.st_info) == STT_TLS)
{
asection *tcomm = bfd_get_section_by_name (abfd, ".tcommon");
if (tcomm == NULL)
{
tcomm = bfd_make_section (abfd, ".tcommon");
if (tcomm == NULL
|| !bfd_set_section_flags (abfd, tcomm, (SEC_ALLOC
| SEC_IS_COMMON
| SEC_LINKER_CREATED
| SEC_THREAD_LOCAL)))
goto error_return;
}
sec = tcomm;
}
else if (add_symbol_hook)
{
if (! (*add_symbol_hook) (abfd, info, &sym, &name, &flags, &sec,
&value))
@ -3457,7 +3473,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath,
elf_tdata (output_bfd)->cverdefs = cdefs;
}
if (info->new_dtags && info->flags)
if ((info->new_dtags && info->flags) || (info->flags & DF_STATIC_TLS))
{
if (! elf_add_dynamic_entry (info, (bfd_vma) DT_FLAGS, info->flags))
return false;
@ -4481,6 +4497,8 @@ struct elf_final_link_info
asection *hash_sec;
/* symbol version section (.gnu.version). */
asection *symver_sec;
/* first SHF_TLS section (if any). */
asection *first_tls_sec;
/* Buffer large enough to hold contents of any section. */
bfd_byte *contents;
/* Buffer large enough to hold external relocs of any section. */
@ -4960,6 +4978,14 @@ elf_bfd_final_link (abfd, info)
finfo.symbuf = NULL;
finfo.symshndxbuf = NULL;
finfo.symbuf_count = 0;
finfo.first_tls_sec = NULL;
for (o = abfd->sections; o != (asection *) NULL; o = o->next)
if ((o->flags & SEC_THREAD_LOCAL) != 0
&& (o->flags & SEC_LOAD) != 0)
{
finfo.first_tls_sec = o;
break;
}
/* Count up the number of relocations we will output for each output
section, so that we know the sizes of the reloc sections. We
@ -5324,6 +5350,40 @@ elf_bfd_final_link (abfd, info)
goto error_return;
}
if (finfo.first_tls_sec)
{
unsigned int align = 0;
bfd_vma base = finfo.first_tls_sec->vma, end = 0;
asection *sec;
for (sec = finfo.first_tls_sec;
sec && (sec->flags & SEC_THREAD_LOCAL);
sec = sec->next)
{
bfd_vma size = sec->_raw_size;
if (bfd_get_section_alignment (abfd, sec) > align)
align = bfd_get_section_alignment (abfd, sec);
if (sec->_raw_size == 0 && (sec->flags & SEC_HAS_CONTENTS) == 0)
{
struct bfd_link_order *o;
size = 0;
for (o = sec->link_order_head; o != NULL; o = o->next)
if (size < o->offset + o->size)
size = o->offset + o->size;
}
end = sec->vma + size;
}
elf_hash_table (info)->tls_segment
= bfd_zalloc (abfd, sizeof (struct elf_link_tls_segment));
if (elf_hash_table (info)->tls_segment == NULL)
goto error_return;
elf_hash_table (info)->tls_segment->start = base;
elf_hash_table (info)->tls_segment->size = end - base;
elf_hash_table (info)->tls_segment->align = align;
}
/* Since ELF permits relocations to be against local symbols, we
must have the local symbols available when we do the relocations.
Since we would rather only read the local symbols once, and we
@ -6100,7 +6160,16 @@ elf_link_output_extsym (h, data)
addresses. */
sym.st_value = h->root.u.def.value + input_sec->output_offset;
if (! finfo->info->relocateable)
sym.st_value += input_sec->output_section->vma;
{
sym.st_value += input_sec->output_section->vma;
if (h->type == STT_TLS)
{
/* STT_TLS symbols are relative to PT_TLS segment
base. */
BFD_ASSERT (finfo->first_tls_sec != NULL);
sym.st_value -= finfo->first_tls_sec->vma;
}
}
}
else
{
@ -6564,7 +6633,15 @@ elf_link_input_bfd (finfo, input_bfd)
these requirements. */
osym.st_value += isec->output_offset;
if (! finfo->info->relocateable)
osym.st_value += isec->output_section->vma;
{
osym.st_value += isec->output_section->vma;
if (ELF_ST_TYPE (osym.st_info) == STT_TLS)
{
/* STT_TLS symbols are relative to PT_TLS segment base. */
BFD_ASSERT (finfo->first_tls_sec != NULL);
osym.st_value -= finfo->first_tls_sec->vma;
}
}
if (! elf_link_output_sym (finfo, name, &osym, isec))
return false;
@ -6899,7 +6976,16 @@ elf_link_input_bfd (finfo, input_bfd)
isym->st_value += sec->output_offset;
if (! finfo->info->relocateable)
isym->st_value += osec->vma;
{
isym->st_value += osec->vma;
if (ELF_ST_TYPE (isym->st_info) == STT_TLS)
{
/* STT_TLS symbols are relative to PT_TLS
segment base. */
BFD_ASSERT (finfo->first_tls_sec != NULL);
isym->st_value -= finfo->first_tls_sec->vma;
}
}
finfo->indices[r_symndx]
= bfd_get_symcount (output_bfd);

274
bfd/elfxx-ia64.c
View File

@ -79,6 +79,9 @@ struct elfNN_ia64_dyn_sym_info
bfd_vma pltoff_offset;
bfd_vma plt_offset;
bfd_vma plt2_offset;
bfd_vma tprel_offset;
bfd_vma dtpmod_offset;
bfd_vma dtprel_offset;
/* The symbol table entry, if any, that this was derrived from. */
struct elf_link_hash_entry *h;
@ -97,6 +100,9 @@ struct elfNN_ia64_dyn_sym_info
unsigned got_done : 1;
unsigned fptr_done : 1;
unsigned pltoff_done : 1;
unsigned tprel_done : 1;
unsigned dtpmod_done : 1;
unsigned dtprel_done : 1;
/* True for the different kinds of linker data we want created. */
unsigned want_got : 1;
@ -105,6 +111,9 @@ struct elfNN_ia64_dyn_sym_info
unsigned want_plt : 1;
unsigned want_plt2 : 1;
unsigned want_pltoff : 1;
unsigned want_tprel : 1;
unsigned want_dtpmod : 1;
unsigned want_dtprel : 1;
};
struct elfNN_ia64_local_hash_entry
@ -285,6 +294,10 @@ static bfd_vma set_pltoff_entry
PARAMS ((bfd *abfd, struct bfd_link_info *info,
struct elfNN_ia64_dyn_sym_info *dyn_i,
bfd_vma value, boolean));
static bfd_vma elfNN_ia64_tprel_base
PARAMS ((struct bfd_link_info *info));
static bfd_vma elfNN_ia64_dtprel_base
PARAMS ((struct bfd_link_info *info));
static int elfNN_ia64_unwind_entry_compare
PARAMS ((const PTR, const PTR));
static boolean elfNN_ia64_final_link
@ -423,10 +436,25 @@ static reloc_howto_type ia64_howto_table[] =
IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 0, false, true),
IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 0, false, true),
IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 0, false, false),
IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 0, false, false),
IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 0, false, false),
IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 8, false, false),
IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_TP22, "LTOFF_TP22", 0, false, false),
IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 0, false, false),
IA64_HOWTO (R_IA64_DTPMOD64MSB, "TPREL64MSB", 8, false, false),
IA64_HOWTO (R_IA64_DTPMOD64LSB, "TPREL64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 0, false, false),
IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 0, false, false),
IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 0, false, false),
IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 0, false, false),
IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 4, false, false),
IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 4, false, false),
IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 8, false, false),
IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 0, false, false),
};
static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
@ -541,10 +569,25 @@ elfNN_ia64_reloc_type_lookup (abfd, bfd_code)
case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
case BFD_RELOC_IA64_LTOFF_TP22: rtype = R_IA64_LTOFF_TP22; break;
case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
default: return 0;
}
@ -2097,6 +2140,9 @@ elfNN_ia64_check_relocs (abfd, info, sec, relocs)
NEED_FULL_PLT = 16,
NEED_DYNREL = 32,
NEED_LTOFF_FPTR = 64,
NEED_TPREL = 128,
NEED_DTPMOD = 256,
NEED_DTPREL = 512
};
struct elf_link_hash_entry *h = NULL;
@ -2134,11 +2180,42 @@ elfNN_ia64_check_relocs (abfd, info, sec, relocs)
need_entry = 0;
switch (ELFNN_R_TYPE (rel->r_info))
{
case R_IA64_TPREL22:
case R_IA64_TPREL64MSB:
case R_IA64_TPREL64LSB:
case R_IA64_LTOFF_TP22:
return false;
if (info->shared || maybe_dynamic)
need_entry = NEED_DYNREL;
dynrel_type = R_IA64_TPREL64LSB;
if (info->shared)
info->flags |= DF_STATIC_TLS;
break;
case R_IA64_LTOFF_TPREL22:
need_entry = NEED_TPREL;
if (info->shared)
info->flags |= DF_STATIC_TLS;
break;
case R_IA64_DTPREL64MSB:
case R_IA64_DTPREL64LSB:
if (info->shared || maybe_dynamic)
need_entry = NEED_DYNREL;
dynrel_type = R_IA64_DTPREL64LSB;
break;
case R_IA64_LTOFF_DTPREL22:
need_entry = NEED_DTPREL;
break;
case R_IA64_DTPMOD64MSB:
case R_IA64_DTPMOD64LSB:
if (info->shared || maybe_dynamic)
need_entry = NEED_DYNREL;
dynrel_type = R_IA64_DTPMOD64LSB;
break;
case R_IA64_LTOFF_DTPMOD22:
need_entry = NEED_DTPMOD;
break;
case R_IA64_LTOFF_FPTR22:
case R_IA64_LTOFF_FPTR64I:
@ -2248,7 +2325,7 @@ elfNN_ia64_check_relocs (abfd, info, sec, relocs)
dyn_i->h = h;
/* Create what's needed. */
if (need_entry & NEED_GOT)
if (need_entry & (NEED_GOT | NEED_TPREL | NEED_DTPMOD | NEED_DTPREL))
{
if (!got)
{
@ -2256,7 +2333,14 @@ elfNN_ia64_check_relocs (abfd, info, sec, relocs)
if (!got)
return false;
}
dyn_i->want_got = 1;
if (need_entry & NEED_GOT)
dyn_i->want_got = 1;
if (need_entry & NEED_TPREL)
dyn_i->want_tprel = 1;
if (need_entry & NEED_DTPMOD)
dyn_i->want_dtpmod = 1;
if (need_entry & NEED_DTPREL)
dyn_i->want_dtprel = 1;
}
if (need_entry & NEED_FPTR)
{
@ -2336,6 +2420,21 @@ allocate_global_data_got (dyn_i, data)
dyn_i->got_offset = x->ofs;
x->ofs += 8;
}
if (dyn_i->want_tprel)
{
dyn_i->tprel_offset = x->ofs;
x->ofs += 8;
}
if (dyn_i->want_dtpmod)
{
dyn_i->dtpmod_offset = x->ofs;
x->ofs += 8;
}
if (dyn_i->want_dtprel)
{
dyn_i->dtprel_offset = x->ofs;
x->ofs += 8;
}
return true;
}
@ -2582,6 +2681,10 @@ allocate_dynrel_entries (dyn_i, data)
if (!dynamic_symbol)
count *= 2;
break;
case R_IA64_TPREL64LSB:
case R_IA64_DTPREL64LSB:
case R_IA64_DTPMOD64LSB:
break;
default:
abort ();
}
@ -2593,6 +2696,12 @@ allocate_dynrel_entries (dyn_i, data)
if (((dynamic_symbol || shared) && dyn_i->want_got)
|| (dyn_i->want_ltoff_fptr && dyn_i->h && dyn_i->h->dynindx != -1))
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
if ((dynamic_symbol || shared) && dyn_i->want_tprel)
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
if ((dynamic_symbol || shared) && dyn_i->want_dtpmod)
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
if (dynamic_symbol && dyn_i->want_dtprel)
ia64_info->rel_got_sec->_raw_size += sizeof (ElfNN_External_Rela);
if (dyn_i->want_pltoff)
{
@ -2903,7 +3012,11 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
/* Instruction relocations. */
case R_IA64_IMM14: opnd = IA64_OPND_IMM14; break;
case R_IA64_IMM14:
case R_IA64_TPREL14:
case R_IA64_DTPREL14:
opnd = IA64_OPND_IMM14;
break;
case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
@ -2920,6 +3033,11 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_PLTOFF22:
case R_IA64_PCREL22:
case R_IA64_LTOFF_FPTR22:
case R_IA64_TPREL22:
case R_IA64_DTPREL22:
case R_IA64_LTOFF_TPREL22:
case R_IA64_LTOFF_DTPMOD22:
case R_IA64_LTOFF_DTPREL22:
opnd = IA64_OPND_IMM22;
break;
@ -2930,6 +3048,8 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_PCREL64I:
case R_IA64_FPTR64I:
case R_IA64_LTOFF_FPTR64I:
case R_IA64_TPREL64I:
case R_IA64_DTPREL64I:
opnd = IA64_OPND_IMMU64;
break;
@ -2943,6 +3063,7 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_SEGREL32MSB:
case R_IA64_SECREL32MSB:
case R_IA64_LTV32MSB:
case R_IA64_DTPREL32MSB:
size = 4; bigendian = 1;
break;
@ -2954,6 +3075,7 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_SEGREL32LSB:
case R_IA64_SECREL32LSB:
case R_IA64_LTV32LSB:
case R_IA64_DTPREL32LSB:
size = 4; bigendian = 0;
break;
@ -2966,6 +3088,9 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_SEGREL64MSB:
case R_IA64_SECREL64MSB:
case R_IA64_LTV64MSB:
case R_IA64_TPREL64MSB:
case R_IA64_DTPMOD64MSB:
case R_IA64_DTPREL64MSB:
size = 8; bigendian = 1;
break;
@ -2978,6 +3103,9 @@ elfNN_ia64_install_value (abfd, hit_addr, v, r_type)
case R_IA64_SEGREL64LSB:
case R_IA64_SECREL64LSB:
case R_IA64_LTV64LSB:
case R_IA64_TPREL64LSB:
case R_IA64_DTPMOD64LSB:
case R_IA64_DTPREL64LSB:
size = 8; bigendian = 0;
break;
@ -3132,26 +3260,53 @@ set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
{
struct elfNN_ia64_link_hash_table *ia64_info;
asection *got_sec;
boolean done;
bfd_vma got_offset;
ia64_info = elfNN_ia64_hash_table (info);
got_sec = ia64_info->got_sec;
BFD_ASSERT ((dyn_i->got_offset & 7) == 0);
if (! dyn_i->got_done)
switch (dyn_r_type)
{
case R_IA64_TPREL64LSB:
done = dyn_i->tprel_done;
dyn_i->tprel_done = true;
got_offset = dyn_i->tprel_offset;
break;
case R_IA64_DTPMOD64LSB:
done = dyn_i->dtpmod_done;
dyn_i->dtpmod_done = true;
got_offset = dyn_i->dtpmod_offset;
break;
case R_IA64_DTPREL64LSB:
done = dyn_i->dtprel_done;
dyn_i->dtprel_done = true;
got_offset = dyn_i->dtprel_offset;
break;
default:
done = dyn_i->got_done;
dyn_i->got_done = true;
got_offset = dyn_i->got_offset;
break;
}
BFD_ASSERT ((got_offset & 7) == 0);
if (! done)
{
/* Store the target address in the linkage table entry. */
bfd_put_64 (abfd, value, got_sec->contents + dyn_i->got_offset);
bfd_put_64 (abfd, value, got_sec->contents + got_offset);
/* Install a dynamic relocation if needed. */
if (info->shared
if ((info->shared && dyn_r_type != R_IA64_DTPREL64LSB)
|| elfNN_ia64_dynamic_symbol_p (dyn_i->h, info)
|| elfNN_ia64_aix_vec (abfd->xvec)
|| (dynindx != -1 && dyn_r_type == R_IA64_FPTR64LSB))
{
if (dynindx == -1)
if (dynindx == -1
&& dyn_r_type != R_IA64_TPREL64LSB
&& dyn_r_type != R_IA64_DTPMOD64LSB
&& dyn_r_type != R_IA64_DTPREL64LSB)
{
dyn_r_type = R_IA64_REL64LSB;
dynindx = 0;
@ -3171,6 +3326,15 @@ set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
case R_IA64_FPTR64LSB:
dyn_r_type = R_IA64_FPTR64MSB;
break;
case R_IA64_TPREL64LSB:
dyn_r_type = R_IA64_TPREL64MSB;
break;
case R_IA64_DTPMOD64LSB:
dyn_r_type = R_IA64_DTPMOD64MSB;
break;
case R_IA64_DTPREL64LSB:
dyn_r_type = R_IA64_DTPREL64MSB;
break;
default:
BFD_ASSERT (false);
break;
@ -3179,7 +3343,7 @@ set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
elfNN_ia64_install_dyn_reloc (abfd, NULL, got_sec,
ia64_info->rel_got_sec,
dyn_i->got_offset, dyn_r_type,
got_offset, dyn_r_type,
dynindx, addend);
}
}
@ -3187,7 +3351,7 @@ set_got_entry (abfd, info, dyn_i, dynindx, addend, value, dyn_r_type)
/* Return the address of the linkage table entry. */
value = (got_sec->output_section->vma
+ got_sec->output_offset
+ dyn_i->got_offset);
+ got_offset);
return value;
}
@ -3285,6 +3449,35 @@ set_pltoff_entry (abfd, info, dyn_i, value, is_plt)
return value;
}
/* Return the base VMA address which should be subtracted from real addresses
when resolving @tprel() relocation.
Main program TLS (whose template starts at PT_TLS p_vaddr)
is assigned offset round(16, PT_TLS p_align). */
static bfd_vma
elfNN_ia64_tprel_base (info)
struct bfd_link_info *info;
{
struct elf_link_tls_segment *tls_segment
= elf_hash_table (info)->tls_segment;
BFD_ASSERT (tls_segment != NULL);
return (tls_segment->start
- align_power ((bfd_vma) 16, tls_segment->align));
}
/* Return the base VMA address which should be subtracted from real addresses
when resolving @dtprel() relocation.
This is PT_TLS segment p_vaddr. */
static bfd_vma
elfNN_ia64_dtprel_base (info)
struct bfd_link_info *info;
{
BFD_ASSERT (elf_hash_table (info)->tls_segment != NULL);
return elf_hash_table (info)->tls_segment->start;
}
/* Called through qsort to sort the .IA_64.unwind section during a
non-relocatable link. Set elfNN_ia64_unwind_entry_compare_bfd
to the output bfd so we can do proper endianness frobbing. */
@ -4030,6 +4223,55 @@ elfNN_ia64_relocate_section (output_bfd, info, input_bfd, input_section,
r_type);
break;
case R_IA64_TPREL14:
case R_IA64_TPREL22:
case R_IA64_TPREL64I:
value -= elfNN_ia64_tprel_base (info);
r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
break;
case R_IA64_DTPREL14:
case R_IA64_DTPREL22:
case R_IA64_DTPREL64I:
value -= elfNN_ia64_dtprel_base (info);
r = elfNN_ia64_install_value (output_bfd, hit_addr, value, r_type);
break;
case R_IA64_LTOFF_TPREL22:
case R_IA64_LTOFF_DTPMOD22:
case R_IA64_LTOFF_DTPREL22:
{
int got_r_type;
switch (r_type)
{
default:
case R_IA64_LTOFF_TPREL22:
if (!dynamic_symbol_p && !info->shared)
value -= elfNN_ia64_tprel_base (info);
got_r_type = R_IA64_TPREL64LSB;
break;
case R_IA64_LTOFF_DTPMOD22:
if (!dynamic_symbol_p && !info->shared)
value = 1;
got_r_type = R_IA64_DTPMOD64LSB;
break;
case R_IA64_LTOFF_DTPREL22:
if (!dynamic_symbol_p)
value -= elfNN_ia64_dtprel_base (info);
got_r_type = R_IA64_DTPREL64LSB;
break;
}
dyn_i = get_dyn_sym_info (ia64_info, h, input_bfd, rel, false);
value = set_got_entry (input_bfd, info, dyn_i,
(h ? h->dynindx : -1), rel->r_addend,
value, got_r_type);
value -= gp_val;
r = elfNN_ia64_install_value (output_bfd, hit_addr, value,
r_type);
}
break;
default:
r = bfd_reloc_notsupported;
break;

30
bfd/libbfd.h
View File

@ -771,6 +771,15 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
"BFD_RELOC_386_RELATIVE",
"BFD_RELOC_386_GOTOFF",
"BFD_RELOC_386_GOTPC",
"BFD_RELOC_386_TLS_LE",
"BFD_RELOC_386_TLS_GD",
"BFD_RELOC_386_TLS_LDM",
"BFD_RELOC_386_TLS_LDO_32",
"BFD_RELOC_386_TLS_IE_32",
"BFD_RELOC_386_TLS_LE_32",
"BFD_RELOC_386_TLS_DTPMOD32",
"BFD_RELOC_386_TLS_DTPOFF32",
"BFD_RELOC_386_TLS_TPOFF32",
"BFD_RELOC_X86_64_GOT32",
"BFD_RELOC_X86_64_PLT32",
"BFD_RELOC_X86_64_COPY",
@ -1142,12 +1151,25 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
"BFD_RELOC_IA64_IPLTMSB",
"BFD_RELOC_IA64_IPLTLSB",
"BFD_RELOC_IA64_COPY",
"BFD_RELOC_IA64_TPREL22",
"BFD_RELOC_IA64_TPREL64MSB",
"BFD_RELOC_IA64_TPREL64LSB",
"BFD_RELOC_IA64_LTOFF_TP22",
"BFD_RELOC_IA64_LTOFF22X",
"BFD_RELOC_IA64_LDXMOV",
"BFD_RELOC_IA64_TPREL14",
"BFD_RELOC_IA64_TPREL22",
"BFD_RELOC_IA64_TPREL64I",
"BFD_RELOC_IA64_TPREL64MSB",
"BFD_RELOC_IA64_TPREL64LSB",
"BFD_RELOC_IA64_LTOFF_TPREL22",
"BFD_RELOC_IA64_DTPMOD64MSB",
"BFD_RELOC_IA64_DTPMOD64LSB",
"BFD_RELOC_IA64_LTOFF_DTPMOD22",
"BFD_RELOC_IA64_DTPREL14",
"BFD_RELOC_IA64_DTPREL22",
"BFD_RELOC_IA64_DTPREL64I",
"BFD_RELOC_IA64_DTPREL32MSB",
"BFD_RELOC_IA64_DTPREL32LSB",
"BFD_RELOC_IA64_DTPREL64MSB",
"BFD_RELOC_IA64_DTPREL64LSB",
"BFD_RELOC_IA64_LTOFF_DTPREL22",
"BFD_RELOC_M68HC11_HI8",
"BFD_RELOC_M68HC11_LO8",
"BFD_RELOC_M68HC11_3B",

50
bfd/reloc.c
View File

@ -2072,6 +2072,24 @@ ENUMX
BFD_RELOC_386_GOTOFF
ENUMX
BFD_RELOC_386_GOTPC
ENUMX
BFD_RELOC_386_TLS_LE
ENUMX
BFD_RELOC_386_TLS_GD
ENUMX
BFD_RELOC_386_TLS_LDM
ENUMX
BFD_RELOC_386_TLS_LDO_32
ENUMX
BFD_RELOC_386_TLS_IE_32
ENUMX
BFD_RELOC_386_TLS_LE_32
ENUMX
BFD_RELOC_386_TLS_DTPMOD32
ENUMX
BFD_RELOC_386_TLS_DTPOFF32
ENUMX
BFD_RELOC_386_TLS_TPOFF32
ENUMDOC
i386/elf relocations
@ -3184,18 +3202,44 @@ ENUMX
BFD_RELOC_IA64_IPLTLSB
ENUMX
BFD_RELOC_IA64_COPY
ENUMX
BFD_RELOC_IA64_LTOFF22X
ENUMX
BFD_RELOC_IA64_LDXMOV
ENUMX
BFD_RELOC_IA64_TPREL14
ENUMX
BFD_RELOC_IA64_TPREL22
ENUMX
BFD_RELOC_IA64_TPREL64I
ENUMX
BFD_RELOC_IA64_TPREL64MSB
ENUMX
BFD_RELOC_IA64_TPREL64LSB
ENUMX
BFD_RELOC_IA64_LTOFF_TP22
BFD_RELOC_IA64_LTOFF_TPREL22
ENUMX
BFD_RELOC_IA64_LTOFF22X
BFD_RELOC_IA64_DTPMOD64MSB
ENUMX
BFD_RELOC_IA64_LDXMOV
BFD_RELOC_IA64_DTPMOD64LSB
ENUMX
BFD_RELOC_IA64_LTOFF_DTPMOD22
ENUMX
BFD_RELOC_IA64_DTPREL14
ENUMX
BFD_RELOC_IA64_DTPREL22
ENUMX
BFD_RELOC_IA64_DTPREL64I
ENUMX
BFD_RELOC_IA64_DTPREL32MSB
ENUMX
BFD_RELOC_IA64_DTPREL32LSB
ENUMX
BFD_RELOC_IA64_DTPREL64MSB
ENUMX
BFD_RELOC_IA64_DTPREL64LSB
ENUMX
BFD_RELOC_IA64_LTOFF_DTPREL22
ENUMDOC
Intel IA64 Relocations.

9
bfd/section.c
View File

@ -230,12 +230,6 @@ CODE_FRAGMENT
. standard data. *}
.#define SEC_CONSTRUCTOR 0x100
.
. {* The section is a constructor, and should be placed at the
. end of the text, data, or bss section(?). *}
.#define SEC_CONSTRUCTOR_TEXT 0x1100
.#define SEC_CONSTRUCTOR_DATA 0x2100
.#define SEC_CONSTRUCTOR_BSS 0x3100
.
. {* The section has contents - a data section could be
. <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
. <<SEC_HAS_CONTENTS>> *}
@ -256,6 +250,9 @@ CODE_FRAGMENT
. sections. *}
.#define SEC_COFF_SHARED_LIBRARY 0x800
.
. {* The section contains thread local data. *}
.#define SEC_THREAD_LOCAL 0x1000
.
. {* The section has GOT references. This flag is only for the
. linker, and is currently only used by the elf32-hppa back end.
. It will be set if global offset table references were detected

3
bfd/syms.c
View File

@ -285,6 +285,9 @@ CODE_FRAGMENT
. as well. *}
.#define BSF_DEBUGGING_RELOC 0x20000
.
. {* This symbol is thread local. Used in ELF. *}
.#define BSF_THREAD_LOCAL 0x40000
.
. flagword flags;
.
. {* A pointer to the section to which this symbol is

11
binutils/ChangeLog
View File

@ -1,3 +1,14 @@
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* readelf.c (get_segment_type): Add PT_TLS.
(get_elf_section_flags): Add SHF_TLS.
(get_dynamic_flags): Optimize. Add DF_STATIC_TLS.
(process_dynamic_segment): Use puts instead of printf.
(get_symbol_type): Support STT_TLS.
* objdump.c (dump_section_header): Remove SEC_CONSTRUCTOR_TEXT,
SEC_CONSTRUCTOR_DATA, SEC_CONSTRUCTOR_BSS.
Add SEC_THREAD_LOCAL.
2002-05-23 Kazu Hirata <kazu@cs.umass.edu>
* rdcoff.c: Fix formatting.

4
binutils/objdump.c
View File

@ -299,9 +299,6 @@ dump_section_header (abfd, section, ignored)
PF (SEC_HAS_CONTENTS, "CONTENTS");
PF (SEC_ALLOC, "ALLOC");
PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
PF (SEC_CONSTRUCTOR_TEXT, "CONSTRUCTOR TEXT");
PF (SEC_CONSTRUCTOR_DATA, "CONSTRUCTOR DATA");
PF (SEC_CONSTRUCTOR_BSS, "CONSTRUCTOR BSS");
PF (SEC_LOAD, "LOAD");
PF (SEC_RELOC, "RELOC");
PF (SEC_READONLY, "READONLY");
@ -317,6 +314,7 @@ dump_section_header (abfd, section, ignored)
PF (SEC_SMALL_DATA, "SMALL_DATA");
PF (SEC_SHARED, "SHARED");
PF (SEC_ARCH_BIT_0, "ARCH_BIT_0");
PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
if ((section->flags & SEC_LINK_ONCE) != 0)
{

26
binutils/readelf.c
View File

@ -1987,6 +1987,7 @@ get_segment_type (p_type)
case PT_NOTE: return "NOTE";
case PT_SHLIB: return "SHLIB";
case PT_PHDR: return "PHDR";
case PT_TLS: return "TLS";
case PT_GNU_EH_FRAME:
return "GNU_EH_FRAME";
@ -3202,6 +3203,7 @@ get_elf_section_flags (sh_flags)
case SHF_LINK_ORDER: strcat (buff, "L"); break;
case SHF_OS_NONCONFORMING: strcat (buff, "O"); break;
case SHF_GROUP: strcat (buff, "G"); break;
case SHF_TLS: strcat (buff, "T"); break;
default:
if (flag & SHF_MASKOS)
@ -4242,7 +4244,10 @@ static const char *
get_dynamic_flags (flags)
bfd_vma flags;
{
static char buff [64];
static char buff [128];
char *p = buff;
*p = '\0';
while (flags)
{
bfd_vma flag;
@ -4250,14 +4255,20 @@ get_dynamic_flags (flags)
flag = flags & - flags;
flags &= ~ flag;
if (p != buff)
*p++ = ' ';
switch (flag)
{
case DF_ORIGIN: strcat (buff, "ORIGIN "); break;
case DF_SYMBOLIC: strcat (buff, "SYMBOLIC "); break;
case DF_TEXTREL: strcat (buff, "TEXTREL "); break;
case DF_BIND_NOW: strcat (buff, "BIND_NOW "); break;
default: strcat (buff, "unknown "); break;
case DF_ORIGIN: strcpy (p, "ORIGIN"); break;
case DF_SYMBOLIC: strcpy (p, "SYMBOLIC"); break;
case DF_TEXTREL: strcpy (p, "TEXTREL"); break;
case DF_BIND_NOW: strcpy (p, "BIND_NOW"); break;
case DF_STATIC_TLS: strcpy (p, "STATIC_TLS"); break;
default: strcpy (p, "unknown"); break;
}
p = strchr (p, '\0');
}
return buff;
}
@ -4443,7 +4454,7 @@ process_dynamic_segment (file)
{
case DT_FLAGS:
if (do_dynamic)
printf ("%s", get_dynamic_flags (entry->d_un.d_val));
puts (get_dynamic_flags (entry->d_un.d_val));
break;
case DT_AUXILIARY:
@ -5252,6 +5263,7 @@ get_symbol_type (type)
case STT_SECTION: return "SECTION";
case STT_FILE: return "FILE";
case STT_COMMON: return "COMMON";
case STT_TLS: return "TLS";
default:
if (type >= STT_LOPROC && type <= STT_HIPROC)
{

42
gas/ChangeLog
View File

@ -1,3 +1,45 @@
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* config/obj-elf.c (elf_common): Renamed from obj_elf_common.
(obj_elf_common): Call elf_common.
(obj_elf_tls_common): New function.
(elf_pseudo_tab): Support .tls_common.
(special_sections): Add .tdata and .tbss.
(obj_elf_change_section): Set SEC_THREAD_LOCAL for SHF_TLS
sections.
(obj_elf_parse_section_letters): Support T in section flags (SHF_TLS).
(obj_elf_parse_section_letters): Include T in error message.
* config/tc-ppc.c (ppc_section_letter): Likewise.
* config/tc-alpha.c (alpha_elf_section_letter): Likewise.
(tc_gen_reloc): Handle SEC_THREAD_LOCAL the same way as
SEC_MERGE.
* config/tc-sparc.c (md_apply_fix3): Likewise.
* config/tc-i386.c (tc_i386_fix_adjustable): Add TLS relocs.
Define them if not BFD_ASSEMBLER.
(lex_got): Support @TLSGD, @TLSLDM, @GOTTPOFF, @TPOFF, @DTPOFF
and @NTPOFF.
(md_apply_fix3): Add TLS relocs.
* config/tc-ia64.c (enum reloc_func): Add FUNC_DTP_MODULE,
FUNC_DTP_RELATIVE, FUNC_TP_RELATIVE, FUNC_LT_DTP_MODULE,
FUNC_LT_DTP_RELATIVE, FUNC_LT_TP_RELATIVE.
(pseudo_func): Support @dtpmod(), @dtprel() and @tprel().
(ia64_elf_section_letter): Include T in error message.
(md_begin): Support TLS operators.
(md_operand): Likewise.
(ia64_gen_real_reloc_type): Support TLS relocs.
* testsuite/gas/i386/tlspic.s: New file.
* testsuite/gas/i386/tlsd.s: New file.
* testsuite/gas/i386/tlsnopic.s: New file.
* testsuite/gas/i386/tlsd.d: New file.
* testsuite/gas/i386/tlsnopic.d: New file.
* testsuite/gas/i386/tlspic.d: New file.
* testsuite/gas/i386/i386.exp: Add tlsd, tlsnopic and tlspic tests.
* testsuite/gas/ia64/tls.s: New file.
* testsuite/gas/ia64/tls.d: New file.
* testsuite/gas/ia64/ia64.exp: Add tls test.
* write.c (adjust_reloc_syms): Don't change symbols in
SEC_THREAD_LOCAL sections to STT_SECTION + addend.
2002-05-23 Nick Clifton <nickc@cambridge.redhat.com>
* config/tc-arm.c (md_apply_fix3): For the Thumb BLX reloc

52
gas/config/obj-elf.c
View File

@ -61,6 +61,7 @@ static void adjust_stab_sections PARAMS ((bfd *, asection *, PTR));
static void build_group_lists PARAMS ((bfd *, asection *, PTR));
static int elf_separate_stab_sections PARAMS ((void));
static void elf_init_stab_section PARAMS ((segT));
static symbolS *elf_common PARAMS ((int));
#ifdef NEED_ECOFF_DEBUG
static boolean elf_get_extr PARAMS ((asymbol *, EXTR *));
@ -84,6 +85,7 @@ static int obj_elf_section_type PARAMS ((char *, size_t));
static void obj_elf_symver PARAMS ((int));
static void obj_elf_subsection PARAMS ((int));
static void obj_elf_popsection PARAMS ((int));
static void obj_elf_tls_common PARAMS ((int));
static const pseudo_typeS elf_pseudo_table[] =
{
@ -130,6 +132,8 @@ static const pseudo_typeS elf_pseudo_table[] =
{"data", obj_elf_data, 0},
{"text", obj_elf_text, 0},
{"tls_common", obj_elf_tls_common, 0},
/* End sentinel. */
{NULL, NULL, 0},
};
@ -280,8 +284,8 @@ elf_file_symbol (s)
#endif
}
void
obj_elf_common (is_common)
static symbolS *
elf_common (is_common)
int is_common;
{
char *name;
@ -294,7 +298,7 @@ obj_elf_common (is_common)
if (flag_mri && is_common)
{
s_mri_common (0);
return;
return NULL;
}
name = input_line_pointer;
@ -307,14 +311,14 @@ obj_elf_common (is_common)
{
as_bad (_("expected comma after symbol-name"));
ignore_rest_of_line ();
return;
return NULL;
}
input_line_pointer++; /* skip ',' */
if ((temp = get_absolute_expression ()) < 0)
{
as_bad (_(".COMMon length (%d.) <0! Ignored."), temp);
ignore_rest_of_line ();
return;
return NULL;
}
size = temp;
*p = 0;
@ -324,7 +328,7 @@ obj_elf_common (is_common)
{
as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP));
ignore_rest_of_line ();
return;
return NULL;
}
if (S_GET_VALUE (symbolP) != 0)
{
@ -374,7 +378,7 @@ obj_elf_common (is_common)
{
as_bad (_("common alignment not a power of 2"));
ignore_rest_of_line ();
return;
return NULL;
}
}
else
@ -426,7 +430,7 @@ obj_elf_common (is_common)
symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
demand_empty_rest_of_line ();
return;
return symbolP;
{
bad_common_segment:
@ -439,10 +443,27 @@ obj_elf_common (is_common)
*p = c;
input_line_pointer = p;
ignore_rest_of_line ();
return;
return NULL;
}
}
void
obj_elf_common (is_common)
int is_common;
{
elf_common (is_common);
}
static void
obj_elf_tls_common (ignore)
int ignore ATTRIBUTE_UNUSED;
{
symbolS *symbolP = elf_common (0);
if (symbolP)
symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL;
}
static void
obj_elf_local (ignore)
int ignore ATTRIBUTE_UNUSED;
@ -594,6 +615,8 @@ static struct special_section const special_sections[] =
{ ".note", SHT_NOTE, 0 },
{ ".rodata", SHT_PROGBITS, SHF_ALLOC },
{ ".rodata1", SHT_PROGBITS, SHF_ALLOC },
{ ".tbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
{ ".tdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
{ ".text", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
#if 0
/* FIXME: The current gcc, as of 2002-03-03, will emit
@ -717,7 +740,8 @@ obj_elf_change_section (name, type, attr, entsize, group_name, push)
| (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0)
| ((attr & SHF_EXECINSTR) ? SEC_CODE : 0)
| ((attr & SHF_MERGE) ? SEC_MERGE : 0)
| ((attr & SHF_STRINGS) ? SEC_STRINGS : 0));
| ((attr & SHF_STRINGS) ? SEC_STRINGS : 0)
| ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0));
#ifdef md_elf_section_flags
flags = md_elf_section_flags (flags, attr, type);
#endif
@ -749,7 +773,8 @@ obj_elf_change_section (name, type, attr, entsize, group_name, push)
saw the first time. */
if ((old_sec->flags ^ flags)
& (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
| SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS))
| SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS
| SEC_THREAD_LOCAL))
as_warn (_("ignoring changed section attributes for %s"), name);
else if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize)
as_warn (_("ignoring changed section entity size for %s"), name);
@ -792,6 +817,9 @@ obj_elf_parse_section_letters (str, len)
case 'G':
attr |= SHF_GROUP;
break;
case 'T':
attr |= SHF_TLS;
break;
/* Compatibility. */
case 'm':
if (*(str - 1) == 'a')
@ -806,7 +834,7 @@ obj_elf_parse_section_letters (str, len)
}
default:
{
char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G");
char *bad_msg = _("unrecognized .section attribute: want a,w,x,M,S,G,T");
#ifdef md_elf_section_letter
int md_attr = md_elf_section_letter (*str, &bad_msg);
if (md_attr >= 0)

5
gas/config/tc-alpha.c
View File

@ -1556,7 +1556,8 @@ tc_gen_reloc (sec, fixp)
* of thing, and as a result we need to fake it out here.
*/
if ((S_IS_EXTERN (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy)
|| (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE))
|| (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE)
|| (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_THREAD_LOCAL))
&& !S_IS_COMMON (fixp->fx_addsy))
reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value;
#endif
@ -5467,7 +5468,7 @@ alpha_elf_section_letter (letter, ptr_msg)
if (letter == 's')
return SHF_ALPHA_GPREL;
*ptr_msg = _("Bad .section directive: want a,s,w,x,M,S in string");
*ptr_msg = _("Bad .section directive: want a,s,w,x,M,S,G,T in string");
return 0;
}

38
gas/config/tc-i386.c
View File

@ -1219,6 +1219,12 @@ tc_i386_fix_adjustable (fixP)
if (fixP->fx_r_type == BFD_RELOC_386_GOTOFF
|| fixP->fx_r_type == BFD_RELOC_386_PLT32
|| fixP->fx_r_type == BFD_RELOC_386_GOT32
|| fixP->fx_r_type == BFD_RELOC_386_TLS_GD
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LDM
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LDO_32
|| fixP->fx_r_type == BFD_RELOC_386_TLS_IE_32
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LE_32
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LE
|| fixP->fx_r_type == BFD_RELOC_X86_64_PLT32
|| fixP->fx_r_type == BFD_RELOC_X86_64_GOT32
|| fixP->fx_r_type == BFD_RELOC_X86_64_GOTPCREL
@ -1236,6 +1242,12 @@ tc_i386_fix_adjustable (fixP)
#define BFD_RELOC_386_PLT32 0
#define BFD_RELOC_386_GOT32 0
#define BFD_RELOC_386_GOTOFF 0
#define BFD_RELOC_386_TLS_GD 0
#define BFD_RELOC_386_TLS_LDM 0
#define BFD_RELOC_386_TLS_LDO_32 0
#define BFD_RELOC_386_TLS_IE_32 0
#define BFD_RELOC_386_TLS_LE_32 0
#define BFD_RELOC_386_TLS_LE 0
#define BFD_RELOC_X86_64_PLT32 0
#define BFD_RELOC_X86_64_GOT32 0
#define BFD_RELOC_X86_64_GOTPCREL 0
@ -3371,10 +3383,16 @@ lex_got (reloc, adjust)
const char *str;
const RELOC_ENUM rel[NUM_FLAG_CODE];
} gotrel[] = {
{ "PLT", { BFD_RELOC_386_PLT32, 0, BFD_RELOC_X86_64_PLT32 } },
{ "GOTOFF", { BFD_RELOC_386_GOTOFF, 0, 0 } },
{ "GOTPCREL", { 0, 0, BFD_RELOC_X86_64_GOTPCREL } },
{ "GOT", { BFD_RELOC_386_GOT32, 0, BFD_RELOC_X86_64_GOT32 } }
{ "PLT", { BFD_RELOC_386_PLT32, 0, BFD_RELOC_X86_64_PLT32 } },
{ "GOTOFF", { BFD_RELOC_386_GOTOFF, 0, 0 } },
{ "GOTPCREL", { 0, 0, BFD_RELOC_X86_64_GOTPCREL } },
{ "TLSGD", { BFD_RELOC_386_TLS_GD, 0, 0 } },
{ "TLSLDM", { BFD_RELOC_386_TLS_LDM, 0, 0 } },
{ "GOTTPOFF", { BFD_RELOC_386_TLS_IE_32, 0, 0 } },
{ "TPOFF", { BFD_RELOC_386_TLS_LE_32, 0, 0 } },
{ "NTPOFF", { BFD_RELOC_386_TLS_LE, 0, 0 } },
{ "DTPOFF", { BFD_RELOC_386_TLS_LDO_32, 0, 0 } },
{ "GOT", { BFD_RELOC_386_GOT32, 0, BFD_RELOC_X86_64_GOT32 } }
};
char *cp;
unsigned int j;
@ -4577,6 +4595,12 @@ md_apply_fix3 (fixP, valP, seg)
value -= 1;
break;
case BFD_RELOC_386_GOT32:
case BFD_RELOC_386_TLS_GD:
case BFD_RELOC_386_TLS_LDM:
case BFD_RELOC_386_TLS_LDO_32:
case BFD_RELOC_386_TLS_IE_32:
case BFD_RELOC_386_TLS_LE_32:
case BFD_RELOC_386_TLS_LE:
case BFD_RELOC_X86_64_GOT32:
value = 0; /* Fully resolved at runtime. No addend. */
break;
@ -5045,6 +5069,12 @@ tc_gen_reloc (section, fixp)
case BFD_RELOC_386_GOT32:
case BFD_RELOC_386_GOTOFF:
case BFD_RELOC_386_GOTPC:
case BFD_RELOC_386_TLS_GD:
case BFD_RELOC_386_TLS_LDM:
case BFD_RELOC_386_TLS_LDO_32:
case BFD_RELOC_386_TLS_IE_32:
case BFD_RELOC_386_TLS_LE_32:
case BFD_RELOC_386_TLS_LE:
case BFD_RELOC_X86_64_32S:
case BFD_RELOC_RVA:
case BFD_RELOC_VTABLE_ENTRY:

115
gas/config/tc-ia64.c
View File

@ -77,6 +77,8 @@ enum special_section
enum reloc_func
{
FUNC_DTP_MODULE,
FUNC_DTP_RELATIVE,
FUNC_FPTR_RELATIVE,
FUNC_GP_RELATIVE,
FUNC_LT_RELATIVE,
@ -84,8 +86,12 @@ enum reloc_func
FUNC_PLT_RELATIVE,
FUNC_SEC_RELATIVE,
FUNC_SEG_RELATIVE,
FUNC_TP_RELATIVE,
FUNC_LTV_RELATIVE,
FUNC_LT_FPTR_RELATIVE,
FUNC_LT_DTP_MODULE,
FUNC_LT_DTP_RELATIVE,
FUNC_LT_TP_RELATIVE,
FUNC_IPLT_RELOC,
};
@ -476,6 +482,8 @@ static struct
pseudo_func[] =
{
/* reloc pseudo functions (these must come first!): */
{ "dtpmod", PSEUDO_FUNC_RELOC, { 0 } },
{ "dtprel", PSEUDO_FUNC_RELOC, { 0 } },
{ "fptr", PSEUDO_FUNC_RELOC, { 0 } },
{ "gprel", PSEUDO_FUNC_RELOC, { 0 } },
{ "ltoff", PSEUDO_FUNC_RELOC, { 0 } },
@ -483,8 +491,12 @@ pseudo_func[] =
{ "pltoff", PSEUDO_FUNC_RELOC, { 0 } },
{ "secrel", PSEUDO_FUNC_RELOC, { 0 } },
{ "segrel", PSEUDO_FUNC_RELOC, { 0 } },
{ "tprel", PSEUDO_FUNC_RELOC, { 0 } },
{ "ltv", PSEUDO_FUNC_RELOC, { 0 } },
{ "", 0, { 0 } }, /* placeholder for FUNC_LT_FPTR_RELATIVE */
{ "", 0, { 0 } }, /* placeholder for FUNC_LT_DTP_MODULE */
{ "", 0, { 0 } }, /* placeholder for FUNC_LT_DTP_RELATIVE */
{ "", 0, { 0 } }, /* placeholder for FUNC_LT_TP_RELATIVE */
{ "iplt", PSEUDO_FUNC_RELOC, { 0 } },
/* mbtype4 constants: */
@ -943,7 +955,7 @@ ia64_elf_section_letter (letter, ptr_msg)
if (letter == 's')
return SHF_IA_64_SHORT;
*ptr_msg = _("Bad .section directive: want a,s,w,x,M,S in string");
*ptr_msg = _("Bad .section directive: want a,s,w,x,M,S,G,T in string");
return 0;
}
@ -6494,6 +6506,14 @@ md_begin ()
bfd_set_section_alignment (stdoutput, text_section, 4);
target_big_endian = TARGET_BYTES_BIG_ENDIAN;
pseudo_func[FUNC_DTP_MODULE].u.sym =
symbol_new (".<dtpmod>", undefined_section, FUNC_DTP_MODULE,
&zero_address_frag);
pseudo_func[FUNC_DTP_RELATIVE].u.sym =
symbol_new (".<dtprel>", undefined_section, FUNC_DTP_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_FPTR_RELATIVE].u.sym =
symbol_new (".<fptr>", undefined_section, FUNC_FPTR_RELATIVE,
&zero_address_frag);
@ -6522,6 +6542,10 @@ md_begin ()
symbol_new (".<segrel>", undefined_section, FUNC_SEG_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_TP_RELATIVE].u.sym =
symbol_new (".<tprel>", undefined_section, FUNC_TP_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_LTV_RELATIVE].u.sym =
symbol_new (".<ltv>", undefined_section, FUNC_LTV_RELATIVE,
&zero_address_frag);
@ -6530,6 +6554,18 @@ md_begin ()
symbol_new (".<ltoff.fptr>", undefined_section, FUNC_LT_FPTR_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_LT_DTP_MODULE].u.sym =
symbol_new (".<ltoff.dtpmod>", undefined_section, FUNC_LT_DTP_MODULE,
&zero_address_frag);
pseudo_func[FUNC_LT_DTP_RELATIVE].u.sym =
symbol_new (".<ltoff.dptrel>", undefined_section, FUNC_LT_DTP_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_LT_TP_RELATIVE].u.sym =
symbol_new (".<ltoff.tprel>", undefined_section, FUNC_LT_TP_RELATIVE,
&zero_address_frag);
pseudo_func[FUNC_IPLT_RELOC].u.sym =
symbol_new (".<iplt>", undefined_section, FUNC_IPLT_RELOC,
&zero_address_frag);
@ -9826,14 +9862,25 @@ md_operand (e)
as_bad ("Not a symbolic expression");
goto err;
}
if (S_GET_VALUE (e->X_op_symbol) == FUNC_FPTR_RELATIVE
&& i == FUNC_LT_RELATIVE)
i = FUNC_LT_FPTR_RELATIVE;
else
if (i != FUNC_LT_RELATIVE)
{
as_bad ("Illegal combination of relocation functions");
goto err;
}
switch (S_GET_VALUE (e->X_op_symbol))
{
case FUNC_FPTR_RELATIVE:
i = FUNC_LT_FPTR_RELATIVE; break;
case FUNC_DTP_MODULE:
i = FUNC_LT_DTP_MODULE; break;
case FUNC_DTP_RELATIVE:
i = FUNC_LT_DTP_RELATIVE; break;
case FUNC_TP_RELATIVE:
i = FUNC_LT_TP_RELATIVE; break;
default:
as_bad ("Illegal combination of relocation functions");
goto err;
}
}
/* Make sure gas doesn't get rid of local symbols that are used
in relocs. */
@ -10163,6 +10210,64 @@ ia64_gen_real_reloc_type (sym, r_type)
}
break;
case FUNC_TP_RELATIVE:
switch (r_type)
{
case BFD_RELOC_IA64_IMM14:
new = BFD_RELOC_IA64_TPREL14; break;
case BFD_RELOC_IA64_IMM22:
new = BFD_RELOC_IA64_TPREL22; break;
case BFD_RELOC_IA64_IMM64:
new = BFD_RELOC_IA64_TPREL64I; break;
default:
break;
}
break;
case FUNC_LT_TP_RELATIVE:
switch (r_type)
{
case BFD_RELOC_IA64_IMM22:
new = BFD_RELOC_IA64_LTOFF_TPREL22; break;
default:
break;
}
break;
case FUNC_LT_DTP_MODULE:
switch (r_type)
{
case BFD_RELOC_IA64_IMM22:
new = BFD_RELOC_IA64_LTOFF_DTPMOD22; break;
default:
break;
}
break;
case FUNC_DTP_RELATIVE:
switch (r_type)
{
case BFD_RELOC_IA64_IMM14:
new = BFD_RELOC_IA64_DTPREL14; break;
case BFD_RELOC_IA64_IMM22:
new = BFD_RELOC_IA64_DTPREL22; break;
case BFD_RELOC_IA64_IMM64:
new = BFD_RELOC_IA64_DTPREL64I; break;
default:
break;
}
break;
case FUNC_LT_DTP_RELATIVE:
switch (r_type)
{
case BFD_RELOC_IA64_IMM22:
new = BFD_RELOC_IA64_LTOFF_DTPREL22; break;
default:
break;
}
break;
case FUNC_IPLT_RELOC:
break;

2
gas/config/tc-ppc.c
View File

@ -2485,7 +2485,7 @@ ppc_section_letter (letter, ptr_msg)
if (letter == 'e')
return SHF_EXCLUDE;
*ptr_msg = _("Bad .section directive: want a,e,w,x,M,S in string");
*ptr_msg = _("Bad .section directive: want a,e,w,x,M,S,G,T in string");
return 0;
}

1
gas/config/tc-sparc.c
View File

@ -2916,6 +2916,7 @@ md_apply_fix3 (fixP, valP, segment)
&& (S_IS_EXTERNAL (sym)
|| S_IS_WEAK (sym)
|| (seg->flags & SEC_MERGE)
|| (seg->flags & SEC_THREAD_LOCAL)
|| (sparc_pic_code && ! fixP->fx_pcrel)
|| (seg != segment
&& (((bfd_get_section_flags (stdoutput, seg) & SEC_LINK_ONCE) != 0)

3
gas/testsuite/gas/i386/i386.exp
View File

@ -75,6 +75,9 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
&& ![istarget *-*-linux*oldld*])
} then {
run_dump_test "relax"
run_dump_test "tlsd"
run_dump_test "tlspic"
run_dump_test "tlsnopic"
}
set ASFLAGS "$old_ASFLAGS"

33
gas/testsuite/gas/i386/tlsd.d Normal file
View File

@ -0,0 +1,33 @@
#objdump: -dr
#name: i386 dynamic tls
.*: +file format .*
Disassembly of section .text:
0+000 <fn>:
0: 55 [ ]*push %ebp
1: 89 e5 [ ]*mov %esp,%ebp
3: 53 [ ]*push %ebx
4: 50 [ ]*push %eax
5: e8 00 00 00 00 [ ]*call a <fn\+0xa>
a: 5b [ ]*pop %ebx
b: 81 c3 03 00 00 00 [ ]*add \$0x3,%ebx
[ ]+d: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
11: 8d 04 1d 00 00 00 00 [ ]*lea 0x0\(,%ebx,1\),%eax
[ ]+14: R_386_TLS_GD foo
18: e8 fc ff ff ff [ ]*call 19 <fn\+0x19>
[ ]+19: R_386_PLT32 ___tls_get_addr
1d: 8d 83 00 00 00 00 [ ]*lea 0x0\(%ebx\),%eax
[ ]+1f: R_386_TLS_LDM bar
23: e8 fc ff ff ff [ ]*call 24 <fn\+0x24>
[ ]+24: R_386_PLT32 ___tls_get_addr
28: 8d 7f 00 [ ]*lea 0x0\(%edi\),%edi
2b: 8d 90 00 00 00 00 [ ]*lea 0x0\(%eax\),%edx
[ ]+2d: R_386_TLS_LDO_32 bar
31: 8d 76 00 [ ]*lea 0x0\(%esi\),%esi
34: 8d 88 00 00 00 00 [ ]*lea 0x0\(%eax\),%ecx
[ ]+36: R_386_TLS_LDO_32 baz
3a: 8b 5d fc [ ]*mov 0xfffffffc\(%ebp\),%ebx
3d: c9 [ ]*leave[ ]*
3e: c3 [ ]*ret[ ]*

42
gas/testsuite/gas/i386/tlsd.s Normal file
View File

@ -0,0 +1,42 @@
.section ".tdata", "awT", @progbits
.globl foo, baz
.hidden baz
foo: .long 25
bar: .long 27
baz: .long 29
.text
.globl fn
.type fn,@function
fn:
pushl %ebp
movl %esp, %ebp
pushl %ebx
pushl %eax
call 1f
1: popl %ebx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
/* Dynamic TLS model, foo not known to be in the current object */
leal foo@TLSGD(,%ebx,1), %eax
call ___tls_get_addr@PLT
/* %eax now contains &foo */
/* Dynamic TLS model, bar and baz known to be in the current object */
leal bar@TLSLDM(%ebx), %eax
call ___tls_get_addr@PLT
/* Just show that there can be arbitrary instructions here */
leal 0(%edi, 1), %edi
leal bar@DTPOFF(%eax), %edx
/* %edx now contains &bar */
/* Again, arbitrary instructions */
leal 0(%esi, 1), %esi
leal baz@DTPOFF(%eax), %ecx
/* %ecx now contains &baz */
movl -4(%ebp), %ebx
leave
ret

31
gas/testsuite/gas/i386/tlsnopic.d Normal file
View File

@ -0,0 +1,31 @@
#objdump: -dr
#name: i386 non-pic tls
.*: +file format .*
Disassembly of section .text:
0+000 <fn>:
0: 8b 15 00 00 00 00 [ ]*mov 0x0,%edx
[ ]+2: R_386_32 .text
6: 81 c2 08 00 00 00 [ ]*add \$0x8,%edx
[ ]+8: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
c: 65 a1 00 00 00 00 [ ]*mov %gs:0x0,%eax
12: 2b 82 00 00 00 00 [ ]*sub 0x0\(%edx\),%eax
[ ]+14: R_386_TLS_IE_32 foo
18: 65 a1 00 00 00 00 [ ]*mov %gs:0x0,%eax
1e: 2d 00 00 00 00 [ ]*sub \$0x0,%eax
[ ]+1f: R_386_TLS_LE_32 bar
23: 65 8b 0d 00 00 00 00 [ ]*mov %gs:0x0,%ecx
2a: 90 [ ]*nop[ ]*
2b: 81 e9 00 00 00 00 [ ]*sub \$0x0,%ecx
[ ]+2d: R_386_TLS_LE_32 baz
31: 65 8b 0d 00 00 00 00 [ ]*mov %gs:0x0,%ecx
38: 90 [ ]*nop
39: 90 [ ]*nop
3a: 8d 81 00 00 00 00 [ ]*lea 0x0\(%ecx\),%eax
[ ]+3c: R_386_TLS_LE var
40: 90 [ ]*nop
41: 8d 91 00 00 00 00 lea 0x0\(%ecx\),%edx
[ ]+43: R_386_TLS_LE var2
47: c3 [ ]*ret[ ]*

45
gas/testsuite/gas/i386/tlsnopic.s Normal file
View File

@ -0,0 +1,45 @@
.section ".tdata", "awT", @progbits
.globl baz
.hidden baz
.globl var
.hidden var2
bar: .long 27
baz: .long 29
var: .long 31
var2: .long 33
.text
.globl fn
.type fn,@function
fn:
/* Main binary, no PIC */
1: movl 1b, %edx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
/* foo can be anywhere in startup TLS */
movl %gs:0, %eax
subl foo@GOTTPOFF(%edx), %eax
/* %eax now contains &foo */
/* bar only in the main program */
movl %gs:0, %eax
subl $bar@TPOFF, %eax
/* %eax now contains &bar */
/* baz only in the main program */
movl %gs:0, %ecx
/* Arbitrary instructions in between */
nop
subl $baz@TPOFF, %ecx
/* %ecx now contains &baz */
/* var and var2 only in the main program */
movl %gs:0, %ecx
/* Arbitrary instructions in between */
nop
nop
leal var@NTPOFF(%ecx), %eax
/* Arbitrary instructions in between */
nop
leal var2@NTPOFF(%ecx), %edx
ret

23
gas/testsuite/gas/i386/tlspic.d Normal file
View File

@ -0,0 +1,23 @@
#objdump: -dr
#name: i386 non-pic tls
.*: +file format .*
Disassembly of section .text:
0+000 <fn>:
0: 55 [ ]*push %ebp
1: 89 e5 [ ]*mov %esp,%ebp
3: 53 [ ]*push %ebx
4: 50 [ ]*push %eax
5: e8 00 00 00 00 [ ]*call a <fn\+0xa>
a: 5b [ ]*pop %ebx
b: 81 c3 03 00 00 00 [ ]*add \$0x3,%ebx
[ ]+d: R_386_GOTPC _GLOBAL_OFFSET_TABLE_
11: 65 a1 00 00 00 00 [ ]*mov %gs:0x0,%eax
17: 8d 76 00 [ ]*lea 0x0\(%esi\),%esi
1a: 2b 83 00 00 00 00 [ ]*sub 0x0\(%ebx\),%eax
[ ]+1c: R_386_TLS_IE_32 foo
20: 8b 5d fc [ ]*mov 0xfffffffc\(%ebp\),%ebx
23: c9 [ ]*leave[ ]*
24: c3 [ ]*ret[ ]*

27
gas/testsuite/gas/i386/tlspic.s Normal file
View File

@ -0,0 +1,27 @@
.section ".tdata", "awT", @progbits
.globl foo
foo: .long 25
.text
.globl fn
.type fn,@function
fn:
pushl %ebp
movl %esp, %ebp
pushl %ebx
pushl %eax
call 1f
1: popl %ebx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
/* foo can be anywhere in the startup TLS */
movl %gs:0, %eax
/* Arbitrary instructions in between */
leal 0(%esi, 1), %esi
subl foo@GOTTPOFF(%ebx), %eax
/* %eax now contains &foo */
movl -4(%ebp), %ebx
leave
ret

1
gas/testsuite/gas/ia64/ia64.exp
View File

@ -35,4 +35,5 @@ if [istarget "ia64-*"] then {
run_dump_test "dv-mutex"
run_dump_test "dv-safe"
run_dump_test "dv-srlz"
run_dump_test "tls"
}

53
gas/testsuite/gas/ia64/tls.d Normal file
View File

@ -0,0 +1,53 @@
#objdump: -dr
#name: ia64 tls
.*: +file format .*
Disassembly of section \.text:
0000000000000000 <foo>:
0: 0d 20 21 0a 80 05 \[MFI\] alloc r36=ar\.pfs,8,5,0
2: LTOFF_TPREL22 x
6: 00 00 00 02 00 00 nop\.f 0x0
c: 04 08 00 90 addl r32=0,r1;;
10: 0b 00 01 40 18 10 \[MMI\] ld8 r32=\[r32\];;
16: 10 02 35 00 40 00 add r33=r32,r13
1c: 00 00 04 00 nop\.i 0x0;;
20: 0b 10 00 1a 00 21 \[MMI\] mov r2=r13;;
21: TPREL22 y
26: 10 02 08 00 48 00 addl r33=0,r2
2c: 00 00 04 00 nop\.i 0x0;;
30: 01 00 01 02 00 21 \[MII\] mov r32=r1
31: LTOFF_DTPMOD22 z
32: LTOFF_DTPREL22 z
36: 50 02 04 00 48 c0 addl r37=0,r1
3c: 04 08 00 90 addl r38=0,r1;;
40: 19 28 01 4a 18 10 \[MMB\] ld8 r37=\[r37\]
42: PCREL21B __tls_get_addr
46: 60 02 98 30 20 00 ld8 r38=\[r38\]
4c: 08 00 00 50 br\.call\.sptk\.many b0=40 <foo\+0x40>;;
50: 0b 08 00 40 00 21 \[MMI\] mov r1=r32;;
51: LTOFF_DTPMOD22 a
52: DTPREL22 a
56: 50 02 04 00 48 c0 addl r37=0,r1
5c: 04 00 00 90 mov r38=0;;
60: 1d 28 01 4a 18 10 \[MFB\] ld8 r37=\[r37\]
62: PCREL21B __tls_get_addr
66: 00 00 00 02 00 00 nop\.f 0x0
6c: 08 00 00 50 br\.call\.sptk\.many b0=60 <foo\+0x60>;;
70: 0b 08 00 40 00 21 \[MMI\] mov r1=r32;;
71: LTOFF_DTPMOD22 b
76: 50 02 04 00 48 c0 addl r37=0,r1
7c: 04 00 00 84 mov r38=r0;;
80: 1d 28 01 4a 18 10 \[MFB\] ld8 r37=\[r37\]
82: PCREL21B __tls_get_addr
86: 00 00 00 02 00 00 nop\.f 0x0
8c: 08 00 00 50 br\.call\.sptk\.many b0=80 <foo\+0x80>;;
90: 02 08 00 40 00 21 \[MII\] mov r1=r32
92: DTPREL22 b
96: 20 00 20 00 42 20 mov r2=r8;;
9c: 04 10 00 90 addl r33=0,r2
a0: 1d 10 01 04 00 24 \[MFB\] addl r34=0,r2
a0: DTPREL22 c
a6: 00 00 00 02 00 80 nop\.f 0x0
ac: 08 00 84 00 br\.ret\.sptk\.many b0;;

64
gas/testsuite/gas/ia64/tls.s Normal file
View File

@ -0,0 +1,64 @@
.section ".tdata", "awT", @progbits
.align 16
.global x#, y#, z#, a#, b#, c#
.protected a#, b#, c#
.type x#,@object
.size x#,4
x: data4 1
.type y#,@object
.size y#,4
y: data4 2
.type z#,@object
.size z#,4
z: data4 3
.align 8
.type a#,@object
.size a#,8
a: data8 4
.type b#,@object
.size b#,8
b: data8 5
.type c#,@object
.size c#,1
c: data1 6
.text
.align 16
.global foo#
.proc foo#
foo:
.prologue
alloc r36 = ar.pfs, 0, 5, 3, 0
.body
addl loc0 = @ltoff(@tprel(x)), gp;;
ld8 loc0 = [loc0];;
add loc1 = loc0, r13;;
mov r2 = r13;;
addl loc1 = @tprel(y), r2;;
mov loc0 = gp
addl out0 = @ltoff(@dtpmod(z)), gp
addl out1 = @ltoff(@dtprel(z)), gp;;
ld8 out0 = [out0]
ld8 out1 = [out1]
br.call.sptk.many b0 = __tls_get_addr;;
mov gp = loc0;;
addl out0 = @ltoff(@dtpmod(a)), gp
addl out1 = @dtprel(a), r0;;
ld8 out0 = [out0]
br.call.sptk.many b0 = __tls_get_addr;;
mov gp = loc0;;
addl out0 = @ltoff(@dtpmod(b)), gp
mov out1 = r0;;
ld8 out0 = [out0]
br.call.sptk.many b0 = __tls_get_addr;;
mov gp = loc0
mov r2 = ret0;;
addl loc1 = @dtprel(b), r2
addl loc2 = @dtprel(c), r2
br.ret.sptk.many b0
.endp foo#

7
gas/write.c
View File

@ -889,6 +889,13 @@ adjust_reloc_syms (abfd, sec, xxx)
symbol_mark_used_in_reloc (fixp->fx_addsy);
goto done;
}
/* Never adjust a reloc against TLS local symbol. */
if (symsec->flags & SEC_THREAD_LOCAL)
{
symbol_mark_used_in_reloc (fixp->fx_addsy);
goto done;
}
#endif
/* Is there some other reason we can't adjust this one? (E.g.,

6
include/ChangeLog
View File

@ -1,3 +1,9 @@
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* elf/common.h (PT_TLS, SHF_TLS, STT_TLS, DF_STATIC_TLS): Define.
* elf/ia64.h (R_IA64_LTOFF_TPREL22): Renamed from R_IA64_LTOFF_TP22.
* elf/i386.h: Add TLS relocs.
2002-05-21 H.J. Lu (hjl@gnu.org)
* bfdlink.h (bfd_link_info): Add allow_multiple_definition.

4
include/elf/common.h
View File

@ -254,6 +254,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define PT_NOTE 4 /* Auxiliary information */
#define PT_SHLIB 5 /* Reserved, unspecified semantics */
#define PT_PHDR 6 /* Entry for header table itself */
#define PT_TLS 7 /* Thread local storage segment */
#define PT_LOOS 0x60000000 /* OS-specific */
#define PT_HIOS 0x6fffffff /* OS-specific */
#define PT_LOPROC 0x70000000 /* Processor-specific */
@ -322,6 +323,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define SHF_LINK_ORDER (1 << 7) /* Preserve section ordering when linking */
#define SHF_OS_NONCONFORMING (1 << 8) /* OS specific processing required */
#define SHF_GROUP (1 << 9) /* Member of a section group */
#define SHF_TLS (1 << 10) /* Thread local storage section */
/* #define SHF_MASKOS 0x0F000000 *//* OS-specific semantics */
#define SHF_MASKOS 0x0FF00000 /* New value, Oct 4, 1999 Draft */
@ -417,6 +419,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define STT_SECTION 3 /* Symbol associated with a section */
#define STT_FILE 4 /* Symbol gives a file name */
#define STT_COMMON 5 /* An uninitialised common block */
#define STT_TLS 6 /* Thread local data object */
#define STT_LOOS 10 /* OS-specific semantics */
#define STT_HIOS 12 /* OS-specific semantics */
#define STT_LOPROC 13 /* Application-specific semantics */
@ -585,6 +588,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#define DF_SYMBOLIC (1 << 1)
#define DF_TEXTREL (1 << 2)
#define DF_BIND_NOW (1 << 3)
#define DF_STATIC_TLS (1 << 4)
/* These constants are used for the version number of a Elf32_Verdef
structure. */

23
include/elf/i386.h
View File

@ -34,12 +34,31 @@ START_RELOC_NUMBERS (elf_i386_reloc_type)
RELOC_NUMBER (R_386_RELATIVE, 8) /* Adjust by program base */
RELOC_NUMBER (R_386_GOTOFF, 9) /* 32 bit offset to GOT */
RELOC_NUMBER (R_386_GOTPC, 10) /* 32 bit PC relative offset to GOT */
FAKE_RELOC (FIRST_INVALID_RELOC, 11)
FAKE_RELOC (LAST_INVALID_RELOC, 19)
RELOC_NUMBER (R_386_32PLT, 11) /* Used by Sun */
FAKE_RELOC (FIRST_INVALID_RELOC, 12)
FAKE_RELOC (LAST_INVALID_RELOC, 16)
RELOC_NUMBER (R_386_TLS_LE, 17)
RELOC_NUMBER (R_386_TLS_GD, 18)
RELOC_NUMBER (R_386_TLS_LDM, 19)
RELOC_NUMBER (R_386_16, 20)
RELOC_NUMBER (R_386_PC16, 21)
RELOC_NUMBER (R_386_8, 22)
RELOC_NUMBER (R_386_PC8, 23)
RELOC_NUMBER (R_386_TLS_GD_32, 24)
RELOC_NUMBER (R_386_TLS_GD_PUSH, 25)
RELOC_NUMBER (R_386_TLS_GD_CALL, 26)
RELOC_NUMBER (R_386_TLS_GD_POP, 27)
RELOC_NUMBER (R_386_TLS_LDM_32, 28)
RELOC_NUMBER (R_386_TLS_LDM_PUSH, 29)
RELOC_NUMBER (R_386_TLS_LDM_CALL, 30)
RELOC_NUMBER (R_386_TLS_LDM_POP, 31)
RELOC_NUMBER (R_386_TLS_LDO_32, 32)
RELOC_NUMBER (R_386_TLS_IE_32, 33)
RELOC_NUMBER (R_386_TLS_LE_32, 34)
RELOC_NUMBER (R_386_TLS_DTPMOD32, 35)
RELOC_NUMBER (R_386_TLS_DTPOFF32, 36)
RELOC_NUMBER (R_386_TLS_TPOFF32, 37)
/* These are GNU extensions to enable C++ vtable garbage collection. */
RELOC_NUMBER (R_386_GNU_VTINHERIT, 250)
RELOC_NUMBER (R_386_GNU_VTENTRY, 251)

2
include/elf/ia64.h
View File

@ -192,7 +192,7 @@ START_RELOC_NUMBERS (elf_ia64_reloc_type)
RELOC_NUMBER (R_IA64_TPREL64MSB, 0x96) /* @tprel(sym+add), data8 MSB */
RELOC_NUMBER (R_IA64_TPREL64LSB, 0x97) /* @tprel(sym+add), data8 LSB */
RELOC_NUMBER (R_IA64_LTOFF_TP22, 0x9a) /* @ltoff(@tprel(s+a)), add imm22 */
RELOC_NUMBER (R_IA64_LTOFF_TPREL22, 0x9a) /* @ltoff(@tprel(s+a)), add imm22 */
RELOC_NUMBER (R_IA64_DTPMOD64MSB, 0xa6) /* @dtpmod(sym+add), data8 MSB */
RELOC_NUMBER (R_IA64_DTPMOD64LSB, 0xa7) /* @dtpmod(sym+add), data8 LSB */

9
ld/ChangeLog
View File

@ -1,3 +1,12 @@
2002-05-23 Jakub Jelinek <jakub@redhat.com>
* scripttempl/elf.sc: Add .rel{,a}.t{bss,data}, .tdata and .tbss.
* ldlang.c (lang_add_section): Set SEC_THREAD_LOCAL for
output section if necessary. Handle .tbss.
(lang_size_sections): Clear _raw_size for .tbss section
(it allocates space in PT_TLS segment only).
* ldwrite.c (build_link_order): Build link order for .tbss too.
2002-05-23 Alan Modra <amodra@bigpond.net.au>
* configure.in: Correct spelling of AC_PREREQ.

7
ld/ldlang.c
View File

@ -1210,6 +1210,10 @@ lang_add_section (ptr, section, output, file)
flags &= ~ (SEC_MERGE | SEC_STRINGS);
}
/* For now make .tbss normal section. */
if (flags & SEC_THREAD_LOCAL)
flags |= SEC_LOAD;
section->output_section->flags |= flags;
if (flags & SEC_MERGE)
@ -3010,6 +3014,9 @@ lang_size_sections_1 (s, output_section_statement, prev, fill, dot, relax)
if (bfd_is_abs_section (os->bfd_section))
ASSERT (after == os->bfd_section->vma);
else if ((os->bfd_section->flags & SEC_HAS_CONTENTS) == 0
&& (os->bfd_section->flags & SEC_THREAD_LOCAL))
os->bfd_section->_raw_size = 0;
else
os->bfd_section->_raw_size =
(after - os->bfd_section->vma) * opb;

4
ld/ldwrite.c
View File

@ -233,7 +233,9 @@ build_link_order (statement)
ASSERT (output_section->owner == output_bfd);
if ((output_section->flags & SEC_HAS_CONTENTS) != 0)
if ((output_section->flags & SEC_HAS_CONTENTS) != 0
|| ((output_section->flags & SEC_LOAD) != 0
&& (output_section->flags & SEC_THREAD_LOCAL)))
{
struct bfd_link_order *link_order;

8
ld/scripttempl/elf.sc
View File

@ -60,6 +60,8 @@
# .sdata2 .gnu.linkonce.s2.foo
# .sbss2 .gnu.linkonce.sb2.foo
# .debug_info .gnu.linkonce.wi.foo
# .tdata .gnu.linkonce.td.foo
# .tbss .gnu.linkonce.tb.foo
#
# Each of these can also have corresponding .rel.* and .rela.* sections.
@ -208,6 +210,10 @@ eval $COMBRELOCCAT <<EOF
${OTHER_READONLY_RELOC_SECTIONS}
.rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
.rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
.rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
.rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
.rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
.rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
.rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
.rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
@ -304,6 +310,8 @@ cat <<EOF
${CONSTRUCTING+SORT(CONSTRUCTORS)}
}
.data1 ${RELOCATING-0} : { *(.data1) }
.tdata ${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }
.tbss ${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*) *(.tcommon}) }
.eh_frame ${RELOCATING-0} : { KEEP (*(.eh_frame)) }
.gcc_except_table ${RELOCATING-0} : { *(.gcc_except_table) }
${WRITABLE_RODATA+${RODATA}}