Commit a43942db authored by Maciej W. Rozycki's avatar Maciej W. Rozycki
Browse files

LD/ELF: Unify STB_GNU_UNIQUE handling

Take STB_GNU_UNIQUE handling scattered across targets and gather it in
the generic ELF linker.  Update test suite infrastructure accordingly.

	bfd/
	* elf-s390-common.c (elf_s390_add_symbol_hook): Remove
	STB_GNU_UNIQUE handling.
	* elf32-arc.c (elf_arc_add_symbol_hook): Likewise.
	* elf32-arm.c (elf32_arm_add_symbol_hook): Likewise.
	* elf32-m68k.c (elf_m68k_add_symbol_hook): Likewise.
	* elf32-ppc.c (ppc_elf_add_symbol_hook): Likewise.
	* elf32-sparc.c (elf32_sparc_add_symbol_hook): Likewise.
	* elf64-ppc.c (ppc64_elf_add_symbol_hook): Likewise.
	* elf64-sparc.c (elf64_sparc_add_symbol_hook): Likewise.
	* elf64-x86-64.c (elf_x86_64_add_symbol_hook): Likewise.
	* elfxx-aarch64.c (_bfd_aarch64_elf_add_symbol_hook): Likewise.
	* elfxx-mips.c (_bfd_mips_elf_add_symbol_hook): Likewise.
	* elf32-i386.c (elf_i386_add_symbol_hook): Remove function.
	(elf_backend_add_symbol_hook): Remove macro.
	* elflink.c (elf_link_add_object_symbols): Set `has_gnu_symbols'
	for STB_GNU_UNIQUE symbols.

	binutils/
	* testsuite/lib/binutils-common.exp (supports_gnu_unique): New
	procedure.
	* testsuite/binutils-all/objcopy.exp: Use `supports_gnu_unique'
	with the `strip-10' test.

	ld/
	* testsuite/ld-unique/unique.exp: Use `is_elf_format' and
	`supports_gnu_unique' to qualify testing.
parent fcdad592
2016-05-17 Maciej W. Rozycki <macro@imgtec.com>
* elf-s390-common.c (elf_s390_add_symbol_hook): Remove
STB_GNU_UNIQUE handling.
* elf32-arc.c (elf_arc_add_symbol_hook): Likewise.
* elf32-arm.c (elf32_arm_add_symbol_hook): Likewise.
* elf32-m68k.c (elf_m68k_add_symbol_hook): Likewise.
* elf32-ppc.c (ppc_elf_add_symbol_hook): Likewise.
* elf32-sparc.c (elf32_sparc_add_symbol_hook): Likewise.
* elf64-ppc.c (ppc64_elf_add_symbol_hook): Likewise.
* elf64-sparc.c (elf64_sparc_add_symbol_hook): Likewise.
* elf64-x86-64.c (elf_x86_64_add_symbol_hook): Likewise.
* elfxx-aarch64.c (_bfd_aarch64_elf_add_symbol_hook): Likewise.
* elfxx-mips.c (_bfd_mips_elf_add_symbol_hook): Likewise.
* elf32-i386.c (elf_i386_add_symbol_hook): Remove function.
(elf_backend_add_symbol_hook): Remove macro.
* elflink.c (elf_link_add_object_symbols): Set `has_gnu_symbols'
for STB_GNU_UNIQUE symbols.
2016-05-16 Maciej W. Rozycki <macro@imgtec.com>
* elf32-v850.c (v850_elf_copy_notes): New function, factored out
......
......@@ -236,11 +236,10 @@ elf_s390_add_symbol_hook (bfd *abfd,
asection **secp ATTRIBUTE_UNUSED,
bfd_vma *valp ATTRIBUTE_UNUSED)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -2742,11 +2742,10 @@ elf_arc_add_symbol_hook (bfd * abfd,
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -17725,11 +17725,10 @@ elf32_arm_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
Elf_Internal_Sym *sym, const char **namep,
flagword *flagsp, asection **secp, bfd_vma *valp)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
 
if (elf32_arm_hash_table (info) == NULL)
return FALSE;
......
......@@ -5795,27 +5795,6 @@ elf_i386_hash_symbol (struct elf_link_hash_entry *h)
return _bfd_elf_hash_symbol (h);
}
/* Hook called by the linker routine which adds symbols from an object
file. */
static bfd_boolean
elf_i386_add_symbol_hook (bfd * abfd,
struct bfd_link_info * info,
Elf_Internal_Sym * sym,
const char ** namep ATTRIBUTE_UNUSED,
flagword * flagsp ATTRIBUTE_UNUSED,
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols
|= elf_gnu_symbol_unique;
return TRUE;
}
#define TARGET_LITTLE_SYM i386_elf32_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
......@@ -5863,7 +5842,6 @@ elf_i386_add_symbol_hook (bfd * abfd,
#define elf_backend_omit_section_dynsym \
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
#define elf_backend_hash_symbol elf_i386_hash_symbol
#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
#define elf_backend_fixup_symbol elf_i386_fixup_symbol
#include "elf32-target.h"
......@@ -6053,9 +6031,6 @@ elf32_iamcu_elf_object_p (bfd *abfd)
#undef elf_backend_strtab_flags
#undef elf_backend_copy_special_section_fields
#undef elf_backend_add_symbol_hook
#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
#include "elf32-target.h"
/* Restore defaults. */
......
......@@ -4839,11 +4839,10 @@ elf_m68k_add_symbol_hook (bfd *abfd,
asection **secp ATTRIBUTE_UNUSED,
bfd_vma *valp ATTRIBUTE_UNUSED)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -3674,11 +3674,10 @@ ppc_elf_add_symbol_hook (bfd *abfd,
*valp = sym->st_size;
}
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -180,11 +180,10 @@ elf32_sparc_add_symbol_hook (bfd * abfd,
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -4894,11 +4894,10 @@ ppc64_elf_add_symbol_hook (bfd *ibfd,
asection **sec,
bfd_vma *value)
{
if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
&& (ibfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
if (*sec != NULL
&& strcmp ((*sec)->name, ".opd") == 0)
......
......@@ -426,11 +426,10 @@ elf64_sparc_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
{
static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER)
{
......
......@@ -6277,7 +6277,7 @@ elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
static bfd_boolean
elf_x86_64_add_symbol_hook (bfd *abfd,
struct bfd_link_info *info,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Sym *sym,
const char **namep ATTRIBUTE_UNUSED,
flagword *flagsp ATTRIBUTE_UNUSED,
......@@ -6306,12 +6306,6 @@ elf_x86_64_add_symbol_hook (bfd *abfd,
return TRUE;
}
if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols
|= elf_gnu_symbol_unique;
return TRUE;
}
......
......@@ -4380,6 +4380,11 @@ error_free_dyn:
(struct bfd_link_hash_entry **) sym_hash)))
goto error_free_vers;
if ((flags & BSF_GNU_UNIQUE)
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_unique;
h = *sym_hash;
/* We need to make sure that indirect symbol dynamic flags are
updated. */
......
......@@ -538,11 +538,10 @@ _bfd_aarch64_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
asection **secp ATTRIBUTE_UNUSED,
bfd_vma *valp ATTRIBUTE_UNUSED)
{
if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
return TRUE;
}
......
......@@ -7526,11 +7526,6 @@ _bfd_mips_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
mips_elf_hash_table (info)->rld_symbol = h;
}
if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_unique;
/* If this is a mips16 text symbol, add 1 to the value to make it
odd. This will cause something like .word SYM to come up with
the right value when it is loaded into the PC. */
......
2016-05-17 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/lib/binutils-common.exp (supports_gnu_unique): New
procedure.
* testsuite/binutils-all/objcopy.exp: Use `supports_gnu_unique'
with the `strip-10' test.
2016-05-16 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/binutils-all/objcopy.exp: Don't skip the `strip-10'
......
......@@ -1060,11 +1060,8 @@ if [is_elf_format] {
run_dump_test "strip-8"
run_dump_test "strip-9"
run_dump_test "strip-12"
# Non-EABI ARM targets will set OSABI to ARM
if { ![istarget "*-*-hpux*"]
&& ![istarget "msp*-*-*"]
&& ![istarget "visium-*-*"]
&& !([istarget "arm*-*-*"] && ![istarget "arm-*-*eabi*"])} {
# This requires STB_GNU_UNIQUE support with OSABI set to GNU.
if { [supports_gnu_unique] } {
run_dump_test "strip-10"
}
set extra_strip11 ""
......
......@@ -162,6 +162,46 @@ proc is_elf64 { binary_file } {
return 0
}
# True if the ELF target supports STB_GNU_UNIQUE with the ELF header's
# OSABI field set to ELFOSABI_GNU.
#
# This generally depends on the target OS only, however there are a
# number of exceptions for bare metal targets as follows. The MSP430
# and Visium targets set OSABI to ELFOSABI_STANDALONE and cannot
# support STB_GNU_UNIQUE. Likewise non-EABI ARM targets set OSABI to
# ELFOSABI_ARM, and TI C6X targets to ELFOSABI_C6000_*. Finally
# rather than `bfd_elf_final_link' AM33/2.0, D30V, DLX, i960, and
# picoJava targets use `_bfd_generic_final_link', which does not
# support STB_GNU_UNIQUE symbol binding causing assertion failures.
#
proc supports_gnu_unique {} {
if { [istarget *-*-gnu*]
|| [istarget *-*-linux*]
|| [istarget *-*-nacl*] } {
return 1
}
if { [istarget "arm*-*-*eabi*"] } {
return 1
}
if { ![istarget "*-*-elf*"] } {
return 0
}
if { [istarget "arm*-*-*"]
|| [istarget "msp430-*-*"]
|| [istarget "tic6x-*-*"]
|| [istarget "visium-*-*"] } {
return 0
}
if { [istarget "am33_2.0-*-*"]
|| [istarget "d30v-*-*"]
|| [istarget "dlx-*-*"]
|| [istarget "i960-*-*"]
|| [istarget "pj*-*-*"] } {
return 0
}
return 1
}
# Compare two files line-by-line. FILE_1 is the actual output and FILE_2
# is the expected output. Ignore blank lines in either file.
#
......
2016-05-17 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/ld-unique/unique.exp: Use `is_elf_format' and
`supports_gnu_unique' to qualify testing.
2016-05-16 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/ld-elf/flags1.d: Update the xfail list.
......
......@@ -24,20 +24,13 @@
# Adapted for unique checking by Mark J. Wielaard <mjw@redhat.com>
# STB_GNU_UNIQUE support has only been implemented for the ix86, x86_64,
# arm, mips, powerpc, and sparc so far.
if {!(([istarget "i?86-*-*"]
|| [istarget "x86_64-*-*"]
|| [istarget "arm*-*-*"]
|| [istarget "mips*-*-*"]
|| [istarget "powerpc*-*-*"]
|| [istarget "sparc*-*-*"])
&& ([istarget "*-*-elf*"]
|| [istarget "*-*-nacl*"]
|| (([istarget "*-*-linux*"]
|| [istarget "*-*-gnu*"])
&& ![istarget "*-*-*aout*"]
&& ![istarget "*-*-*oldld*"]))) } {
# Exclude non-ELF targets.
if { ![is_elf_format] } {
return
}
# Require STB_GNU_UNIQUE support with OSABI set to GNU.
if { ![supports_gnu_unique] } {
verbose "UNIQUE tests not run - target does not support UNIQUE"
return
}
......
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