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powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define
With AIX port deprecated there is no need to check/define HAVE_ASM_GLOBAL_DOT_NAME anymore since the current minimum binutils supported (2.22) does not emit global symbol with dot. This patch removes all the HAVE_ASM_GLOBAL_DOT_NAME definition and checks for powerpc64 port.
This commit is contained in:
Adhemerval Zanella
parent
b42e14ff3e
commit
5ca10a0c9a
27
ChangeLog
27
ChangeLog
@ -1,3 +1,30 @@
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2015-03-11 Adhemerval Zanellla <azanella@linux.vnet.ibm.com>
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* config.h.in [HAVE_ASM_GLOBAL_DOT_NAME]: Remove define.
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* include/libc-symbols.h [HAVE_ASM_GLOBAL_DOT_NAME] (strong_alias):
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Remove define.
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[HAVE_ASM_GLOBAL_DOT_NAME] (strong_data_alias): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (weak_alias): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (_symbol_version): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (_default_symbol_version): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (HIDDEN_JUMPTARGET): Likewise.
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* nptl_db/db-symbols.h [HAVE_ASM_GLOBAL_DOT_NAME] (DOT): Remove
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define.
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* nptl_db/td_symbol_list.c (td_lookup): Remove
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HAVE_ASM_GLOBAL_DOT_NAME code.
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* sysdeps/powerpc/powerpc64/configure.ac: Remove
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HAVE_ASM_GLOBAL_DOT_NAME check.
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* sysdeps/powerpc/powerpc64/configure: Regenerate.
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* sysdeps/powerpc/powerpc64/sysdep.h [HAVE_ASM_GLOBAL_DOT_NAME]
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(DOT_LABEL): Remove define.
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[HAVE_ASM_GLOBAL_DOT_NAME] (BODY_LABEL): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (ENTRY_2): Likewise.
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[HAVE_ASM_GLOBAL_DOT_NAME] (END_2): Likewise.
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* sysdeps/powerpc/powerpc64/tls-macros.h [HAVE_ASM_GLOBAL_DOT_NAME]
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(__TLS_GET_ADDR): Likewise.
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* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
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[HAVE_ASM_GLOBAL_DOT_NAME] (DASHDASHPFX): Likewise.
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2015-03-11 Carlos O'Donell <carlos@redhat.com>
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[BZ #18111]
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@ -37,9 +37,6 @@
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/* Define if the assembler supports the gnu_unique_object symbol type. */
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#undef HAVE_ASM_UNIQUE_OBJECT
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/* Define a symbol_name as a global .symbol_name for ld. */
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#undef HAVE_ASM_GLOBAL_DOT_NAME
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/* On powerpc64, use overlapping .opd entries. */
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#undef USE_PPC64_OVERLAPPING_OPD
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@ -96,17 +96,6 @@
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# define ASM_LINE_SEP ;
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#endif
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# ifndef C_SYMBOL_DOT_NAME
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# if defined __GNUC__ && defined __GNUC_MINOR__ \
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&& (__GNUC__ << 16) + __GNUC_MINOR__ >= (3 << 16) + 1
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# define C_SYMBOL_DOT_NAME(name) .name
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# else
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# define C_SYMBOL_DOT_NAME(name) .##name
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# endif
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# endif
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#endif
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#ifndef __ASSEMBLER__
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/* GCC understands weak symbols and aliases; use its interface where
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possible, instead of embedded assembly language. */
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@ -142,64 +131,28 @@
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#else /* __ASSEMBLER__ */
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# ifdef HAVE_ASM_SET_DIRECTIVE
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP \
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.globl C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
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.set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original)
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# define strong_data_alias(original, alias) \
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
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# else
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
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# define strong_data_alias(original, alias) strong_alias(original, alias)
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# endif
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# define strong_data_alias(original, alias) strong_alias(original, alias)
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# else
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \
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.globl C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
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# define strong_data_alias(original, alias) \
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
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# else
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# define strong_alias(original, alias) \
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.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
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# define strong_data_alias(original, alias) strong_alias(original, alias)
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# endif
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# define strong_data_alias(original, alias) strong_alias(original, alias)
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# endif
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# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define weak_alias(original, alias) \
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.weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) ASM_LINE_SEP \
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.weakext C_SYMBOL_DOT_NAME (alias), C_SYMBOL_DOT_NAME (original)
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# else
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# define weak_alias(original, alias) \
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# define weak_alias(original, alias) \
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.weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original)
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# endif
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# define weak_extern(symbol) \
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.weakext C_SYMBOL_NAME (symbol)
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# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define weak_alias(original, alias) \
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.weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \
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.weak C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
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# else
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# define weak_alias(original, alias) \
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# define weak_alias(original, alias) \
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.weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \
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C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
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# endif
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# define weak_extern(symbol) \
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.weak C_SYMBOL_NAME (symbol)
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@ -358,33 +311,15 @@ for linking")
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# define default_symbol_version(real, name, version) \
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_default_symbol_version(real, name, version)
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# ifdef __ASSEMBLER__
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define _symbol_version(real, name, version) \
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.symver real, name##@##version ASM_LINE_SEP \
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.symver C_SYMBOL_DOT_NAME(real), C_SYMBOL_DOT_NAME(name##@##version)
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# define _default_symbol_version(real, name, version) \
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.symver real, name##@##@##version ASM_LINE_SEP \
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.symver C_SYMBOL_DOT_NAME(real), C_SYMBOL_DOT_NAME(name##@##@##version)
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# else
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# define _symbol_version(real, name, version) \
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# define _symbol_version(real, name, version) \
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.symver real, name##@##version
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# define _default_symbol_version(real, name, version) \
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# define _default_symbol_version(real, name, version) \
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.symver real, name##@##@##version
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# endif
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# else
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define _symbol_version(real, name, version) \
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__asm__ (".symver " #real "," #name "@" #version "\n\t" \
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".symver ." #real ",." #name "@" #version)
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# define _default_symbol_version(real, name, version) \
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__asm__ (".symver " #real "," #name "@@" #version "\n\t" \
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".symver ." #real ",." #name "@@" #version)
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# else
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# define _symbol_version(real, name, version) \
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# define _symbol_version(real, name, version) \
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__asm__ (".symver " #real "," #name "@" #version)
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# define _default_symbol_version(real, name, version) \
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# define _default_symbol_version(real, name, version) \
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__asm__ (".symver " #real "," #name "@@" #version)
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# endif
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# endif
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#else
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# define symbol_version(real, name, version)
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@ -527,11 +462,7 @@ for linking")
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# define hidden_data_def(name) strong_data_alias (name, __GI_##name)
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# define hidden_data_weak(name) hidden_data_def (name)
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# define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name)
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define HIDDEN_JUMPTARGET(name) .__GI_##name
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# else
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# define HIDDEN_JUMPTARGET(name) __GI_##name
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# endif
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# define HIDDEN_JUMPTARGET(name) __GI_##name
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# endif
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#else
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# ifndef __ASSEMBLER__
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@ -16,11 +16,7 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define DOT(x) .##x /* PPC64 requires . prefix on code symbols. */
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#else
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# define DOT(x) x /* No prefix. */
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#endif
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#define DOT(x) x /* No prefix. */
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#define STRINGIFY(name) STRINGIFY_1(name)
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#define STRINGIFY_1(name) #name
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@ -48,13 +48,5 @@ td_lookup (struct ps_prochandle *ps, int idx, psaddr_t *sym_addr)
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result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, symbol_list_arr[idx],
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sym_addr);
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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/* For PowerPC, 64-bit uses dot symbols but 32-bit does not.
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We could be a 64-bit libthread_db debugging a 32-bit libpthread. */
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if (result == PS_NOSYM && symbol_list_arr[idx][0] == '.')
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result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, &symbol_list_arr[idx][1],
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sym_addr);
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#endif
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return result;
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}
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31
sysdeps/powerpc/powerpc64/configure
vendored
31
sysdeps/powerpc/powerpc64/configure
vendored
@ -1,37 +1,6 @@
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# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
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# Local configure fragment for sysdeps/powerpc/powerpc64.
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# The Aix ld uses global .symbol_names instead of symbol_names
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# and unfortunately early Linux PPC64 linkers use it as well.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for support for omitting dot symbols" >&5
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$as_echo_n "checking for support for omitting dot symbols... " >&6; }
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if ${libc_cv_omit_dot_syms+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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libc_cv_omit_dot_syms=no
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echo 'void foo (void) {}' > conftest.c
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if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }; then
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if grep -w '\.foo' conftest.s > /dev/null; then
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:
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else
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libc_cv_omit_dot_syms=yes
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fi
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fi
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rm -f conftest.c conftest.s
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_omit_dot_syms" >&5
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$as_echo "$libc_cv_omit_dot_syms" >&6; }
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if test x$libc_cv_omit_dot_syms != xyes; then
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$as_echo "#define HAVE_ASM_GLOBAL_DOT_NAME 1" >>confdefs.h
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker support for overlapping .opd entries" >&5
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$as_echo_n "checking for linker support for overlapping .opd entries... " >&6; }
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if ${libc_cv_overlapping_opd+:} false; then :
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@ -1,25 +1,6 @@
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/powerpc/powerpc64.
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# The Aix ld uses global .symbol_names instead of symbol_names
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# and unfortunately early Linux PPC64 linkers use it as well.
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AC_CACHE_CHECK(for support for omitting dot symbols,
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libc_cv_omit_dot_syms, [dnl
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libc_cv_omit_dot_syms=no
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echo 'void foo (void) {}' > conftest.c
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if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
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if grep -w '\.foo' conftest.s > /dev/null; then
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:
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else
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libc_cv_omit_dot_syms=yes
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fi
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fi
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rm -f conftest.c conftest.s
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])
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if test x$libc_cv_omit_dot_syms != xyes; then
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AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
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fi
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AC_CACHE_CHECK(for linker support for overlapping .opd entries,
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libc_cv_overlapping_opd, [dnl
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libc_cv_overlapping_opd=no
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@ -140,25 +140,14 @@
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name##: OPD_ENT (name); \
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.previous;
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define DOT_LABEL(X) .##X
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# define BODY_LABEL(X) .##X
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# define ENTRY_2(name) \
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.globl BODY_LABEL(name); \
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ENTRY_1(name) \
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.size name, 24;
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# define END_2(name) \
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.size BODY_LABEL(name),.-BODY_LABEL(name);
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#else
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# define DOT_LABEL(X) X
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# define BODY_LABEL(X) .LY##X
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# define ENTRY_2(name) \
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#define DOT_LABEL(X) X
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#define BODY_LABEL(X) .LY##X
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#define ENTRY_2(name) \
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.type name,@function; \
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ENTRY_1(name)
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# define END_2(name) \
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#define END_2(name) \
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.size name,.-BODY_LABEL(name); \
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.size BODY_LABEL(name),.-BODY_LABEL(name);
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#endif
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#define LOCALENTRY(name)
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#else /* _CALL_ELF */
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@ -403,25 +392,14 @@ LT_LABELSUFFIX(name,_name_end): ; \
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OPD_ENT (name) "\n" \
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".popsection;"
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define DOT_PREFIX "."
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# define BODY_PREFIX "."
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# define ENTRY_2(name) \
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".globl " BODY_PREFIX #name ";\n" \
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ENTRY_1(name) "\n" \
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".size " #name ", 24;"
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# define END_2(name) \
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".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
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#else
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# define DOT_PREFIX ""
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# define BODY_PREFIX ".LY"
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# define ENTRY_2(name) \
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#define DOT_PREFIX ""
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#define BODY_PREFIX ".LY"
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#define ENTRY_2(name) \
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".type " #name ",@function;\n" \
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ENTRY_1(name)
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# define END_2(name) \
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#define END_2(name) \
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".size " #name ",.-" BODY_PREFIX #name ";\n" \
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".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
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#endif
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#define LOCALENTRY(name)
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#else /* _CALL_ELF */
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@ -17,11 +17,9 @@
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: "=r" (__result) ); \
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__result; \
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})
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#ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define __TLS_GET_ADDR ".__tls_get_addr"
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#else
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# define __TLS_GET_ADDR "__tls_get_addr"
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#endif
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#define __TLS_GET_ADDR "__tls_get_addr"
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/* PowerPC64 Local Dynamic TLS access. */
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#define TLS_LD(x) \
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({ int * __result; \
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@ -25,11 +25,7 @@
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#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
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# ifdef HAVE_ASM_GLOBAL_DOT_NAME
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# define DASHDASHPFX(str) .__##str
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# else
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# define DASHDASHPFX(str) __##str
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# endif
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# define DASHDASHPFX(str) __##str
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#if _CALL_ELF == 2
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#define CANCEL_FRAMESIZE (FRAME_MIN_SIZE+16+48)
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