OpenE2K
/
glibc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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 2015-02-03 07:41:25 -05:00
parent b42e14ff3e
commit 5ca10a0c9a
10 changed files with 51 additions and 186 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
ChangeLog
View File

@ -1,3 +1,30 @@
2015-03-11 Adhemerval Zanellla <azanella@linux.vnet.ibm.com>
* config.h.in [HAVE_ASM_GLOBAL_DOT_NAME]: Remove define.
* include/libc-symbols.h [HAVE_ASM_GLOBAL_DOT_NAME] (strong_alias):
Remove define.
[HAVE_ASM_GLOBAL_DOT_NAME] (strong_data_alias): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (weak_alias): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (_symbol_version): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (_default_symbol_version): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (HIDDEN_JUMPTARGET): Likewise.
* nptl_db/db-symbols.h [HAVE_ASM_GLOBAL_DOT_NAME] (DOT): Remove
define.
* nptl_db/td_symbol_list.c (td_lookup): Remove
HAVE_ASM_GLOBAL_DOT_NAME code.
* sysdeps/powerpc/powerpc64/configure.ac: Remove
HAVE_ASM_GLOBAL_DOT_NAME check.
* sysdeps/powerpc/powerpc64/configure: Regenerate.
* sysdeps/powerpc/powerpc64/sysdep.h [HAVE_ASM_GLOBAL_DOT_NAME]
(DOT_LABEL): Remove define.
[HAVE_ASM_GLOBAL_DOT_NAME] (BODY_LABEL): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (ENTRY_2): Likewise.
[HAVE_ASM_GLOBAL_DOT_NAME] (END_2): Likewise.
* sysdeps/powerpc/powerpc64/tls-macros.h [HAVE_ASM_GLOBAL_DOT_NAME]
(__TLS_GET_ADDR): Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
[HAVE_ASM_GLOBAL_DOT_NAME] (DASHDASHPFX): Likewise.
2015-03-11 Carlos O'Donell <carlos@redhat.com>
[BZ #18111]

3
config.h.in
View File

@ -37,9 +37,6 @@
/* Define if the assembler supports the gnu_unique_object symbol type. */
#undef HAVE_ASM_UNIQUE_OBJECT
/* Define a symbol_name as a global .symbol_name for ld. */
#undef HAVE_ASM_GLOBAL_DOT_NAME
/* On powerpc64, use overlapping .opd entries. */
#undef USE_PPC64_OVERLAPPING_OPD

91
include/libc-symbols.h
View File

@ -96,17 +96,6 @@
# define ASM_LINE_SEP ;
#endif
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# ifndef C_SYMBOL_DOT_NAME
# if defined __GNUC__ && defined __GNUC_MINOR__ \
&& (__GNUC__ << 16) + __GNUC_MINOR__ >= (3 << 16) + 1
# define C_SYMBOL_DOT_NAME(name) .name
# else
# define C_SYMBOL_DOT_NAME(name) .##name
# endif
# endif
#endif
#ifndef __ASSEMBLER__
/* GCC understands weak symbols and aliases; use its interface where
possible, instead of embedded assembly language. */
@ -142,64 +131,28 @@
#else /* __ASSEMBLER__ */
# ifdef HAVE_ASM_SET_DIRECTIVE
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original) ASM_LINE_SEP \
.globl C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
.set C_SYMBOL_DOT_NAME (alias),C_SYMBOL_DOT_NAME (original)
# define strong_data_alias(original, alias) \
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
# else
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
.set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
# define strong_data_alias(original, alias) strong_alias(original, alias)
# endif
# define strong_data_alias(original, alias) strong_alias(original, alias)
# else
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \
.globl C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
# define strong_data_alias(original, alias) \
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
# else
# define strong_alias(original, alias) \
.globl C_SYMBOL_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
# define strong_data_alias(original, alias) strong_alias(original, alias)
# endif
# define strong_data_alias(original, alias) strong_alias(original, alias)
# endif
# ifdef HAVE_ASM_WEAKEXT_DIRECTIVE
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define weak_alias(original, alias) \
.weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original) ASM_LINE_SEP \
.weakext C_SYMBOL_DOT_NAME (alias), C_SYMBOL_DOT_NAME (original)
# else
# define weak_alias(original, alias) \
# define weak_alias(original, alias) \
.weakext C_SYMBOL_NAME (alias), C_SYMBOL_NAME (original)
# endif
# define weak_extern(symbol) \
.weakext C_SYMBOL_NAME (symbol)
# else /* ! HAVE_ASM_WEAKEXT_DIRECTIVE */
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define weak_alias(original, alias) \
.weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original) ASM_LINE_SEP \
.weak C_SYMBOL_DOT_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_DOT_NAME (alias) = C_SYMBOL_DOT_NAME (original)
# else
# define weak_alias(original, alias) \
# define weak_alias(original, alias) \
.weak C_SYMBOL_NAME (alias) ASM_LINE_SEP \
C_SYMBOL_NAME (alias) = C_SYMBOL_NAME (original)
# endif
# define weak_extern(symbol) \
.weak C_SYMBOL_NAME (symbol)
@ -358,33 +311,15 @@ for linking")
# define default_symbol_version(real, name, version) \
_default_symbol_version(real, name, version)
# ifdef __ASSEMBLER__
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define _symbol_version(real, name, version) \
.symver real, name##@##version ASM_LINE_SEP \
.symver C_SYMBOL_DOT_NAME(real), C_SYMBOL_DOT_NAME(name##@##version)
# define _default_symbol_version(real, name, version) \
.symver real, name##@##@##version ASM_LINE_SEP \
.symver C_SYMBOL_DOT_NAME(real), C_SYMBOL_DOT_NAME(name##@##@##version)
# else
# define _symbol_version(real, name, version) \
# define _symbol_version(real, name, version) \
.symver real, name##@##version
# define _default_symbol_version(real, name, version) \
# define _default_symbol_version(real, name, version) \
.symver real, name##@##@##version
# endif
# else
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define _symbol_version(real, name, version) \
__asm__ (".symver " #real "," #name "@" #version "\n\t" \
".symver ." #real ",." #name "@" #version)
# define _default_symbol_version(real, name, version) \
__asm__ (".symver " #real "," #name "@@" #version "\n\t" \
".symver ." #real ",." #name "@@" #version)
# else
# define _symbol_version(real, name, version) \
# define _symbol_version(real, name, version) \
__asm__ (".symver " #real "," #name "@" #version)
# define _default_symbol_version(real, name, version) \
# define _default_symbol_version(real, name, version) \
__asm__ (".symver " #real "," #name "@@" #version)
# endif
# endif
#else
# define symbol_version(real, name, version)
@ -527,11 +462,7 @@ for linking")
# define hidden_data_def(name) strong_data_alias (name, __GI_##name)
# define hidden_data_weak(name) hidden_data_def (name)
# define hidden_data_ver(local, name) strong_data_alias (local, __GI_##name)
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define HIDDEN_JUMPTARGET(name) .__GI_##name
# else
# define HIDDEN_JUMPTARGET(name) __GI_##name
# endif
# define HIDDEN_JUMPTARGET(name) __GI_##name
# endif
#else
# ifndef __ASSEMBLER__

6
nptl_db/db-symbols.h
View File

@ -16,11 +16,7 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DOT(x) .##x /* PPC64 requires . prefix on code symbols. */
#else
# define DOT(x) x /* No prefix. */
#endif
#define DOT(x) x /* No prefix. */
#define STRINGIFY(name) STRINGIFY_1(name)
#define STRINGIFY_1(name) #name

8
nptl_db/td_symbol_list.c
View File

@ -48,13 +48,5 @@ td_lookup (struct ps_prochandle *ps, int idx, psaddr_t *sym_addr)
result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, symbol_list_arr[idx],
sym_addr);
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
/* For PowerPC, 64-bit uses dot symbols but 32-bit does not.
We could be a 64-bit libthread_db debugging a 32-bit libpthread. */
if (result == PS_NOSYM && symbol_list_arr[idx][0] == '.')
result = ps_pglobal_lookup (ps, LIBPTHREAD_SO, &symbol_list_arr[idx][1],
sym_addr);
#endif
return result;
}

31
sysdeps/powerpc/powerpc64/configure vendored
View File

@ -1,37 +1,6 @@
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/powerpc/powerpc64.
# The Aix ld uses global .symbol_names instead of symbol_names
# and unfortunately early Linux PPC64 linkers use it as well.
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for support for omitting dot symbols" >&5
$as_echo_n "checking for support for omitting dot symbols... " >&6; }
if ${libc_cv_omit_dot_syms+:} false; then :
$as_echo_n "(cached) " >&6
else
libc_cv_omit_dot_syms=no
echo 'void foo (void) {}' > conftest.c
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
if grep -w '\.foo' conftest.s > /dev/null; then
:
else
libc_cv_omit_dot_syms=yes
fi
fi
rm -f conftest.c conftest.s
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_omit_dot_syms" >&5
$as_echo "$libc_cv_omit_dot_syms" >&6; }
if test x$libc_cv_omit_dot_syms != xyes; then
$as_echo "#define HAVE_ASM_GLOBAL_DOT_NAME 1" >>confdefs.h
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker support for overlapping .opd entries" >&5
$as_echo_n "checking for linker support for overlapping .opd entries... " >&6; }
if ${libc_cv_overlapping_opd+:} false; then :

19
sysdeps/powerpc/powerpc64/configure.ac
View File

@ -1,25 +1,6 @@
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/powerpc/powerpc64.
# The Aix ld uses global .symbol_names instead of symbol_names
# and unfortunately early Linux PPC64 linkers use it as well.
AC_CACHE_CHECK(for support for omitting dot symbols,
libc_cv_omit_dot_syms, [dnl
libc_cv_omit_dot_syms=no
echo 'void foo (void) {}' > conftest.c
if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
if grep -w '\.foo' conftest.s > /dev/null; then
:
else
libc_cv_omit_dot_syms=yes
fi
fi
rm -f conftest.c conftest.s
])
if test x$libc_cv_omit_dot_syms != xyes; then
AC_DEFINE(HAVE_ASM_GLOBAL_DOT_NAME)
fi
AC_CACHE_CHECK(for linker support for overlapping .opd entries,
libc_cv_overlapping_opd, [dnl
libc_cv_overlapping_opd=no

38
sysdeps/powerpc/powerpc64/sysdep.h
View File

@ -140,25 +140,14 @@
name##: OPD_ENT (name); \
.previous;
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DOT_LABEL(X) .##X
# define BODY_LABEL(X) .##X
# define ENTRY_2(name) \
.globl BODY_LABEL(name); \
ENTRY_1(name) \
.size name, 24;
# define END_2(name) \
.size BODY_LABEL(name),.-BODY_LABEL(name);
#else
# define DOT_LABEL(X) X
# define BODY_LABEL(X) .LY##X
# define ENTRY_2(name) \
#define DOT_LABEL(X) X
#define BODY_LABEL(X) .LY##X
#define ENTRY_2(name) \
.type name,@function; \
ENTRY_1(name)
# define END_2(name) \
#define END_2(name) \
.size name,.-BODY_LABEL(name); \
.size BODY_LABEL(name),.-BODY_LABEL(name);
#endif
#define LOCALENTRY(name)
#else /* _CALL_ELF */
@ -403,25 +392,14 @@ LT_LABELSUFFIX(name,_name_end): ; \
OPD_ENT (name) "\n" \
".popsection;"
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DOT_PREFIX "."
# define BODY_PREFIX "."
# define ENTRY_2(name) \
".globl " BODY_PREFIX #name ";\n" \
ENTRY_1(name) "\n" \
".size " #name ", 24;"
# define END_2(name) \
".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
#else
# define DOT_PREFIX ""
# define BODY_PREFIX ".LY"
# define ENTRY_2(name) \
#define DOT_PREFIX ""
#define BODY_PREFIX ".LY"
#define ENTRY_2(name) \
".type " #name ",@function;\n" \
ENTRY_1(name)
# define END_2(name) \
#define END_2(name) \
".size " #name ",.-" BODY_PREFIX #name ";\n" \
".size " BODY_PREFIX #name ",.-" BODY_PREFIX #name ";"
#endif
#define LOCALENTRY(name)
#else /* _CALL_ELF */

8
sysdeps/powerpc/powerpc64/tls-macros.h
View File

@ -17,11 +17,9 @@
: "=r" (__result) ); \
__result; \
})
#ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define __TLS_GET_ADDR ".__tls_get_addr"
#else
# define __TLS_GET_ADDR "__tls_get_addr"
#endif
#define __TLS_GET_ADDR "__tls_get_addr"
/* PowerPC64 Local Dynamic TLS access. */
#define TLS_LD(x) \
({ int * __result; \

6
sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
View File

@ -25,11 +25,7 @@
#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
# ifdef HAVE_ASM_GLOBAL_DOT_NAME
# define DASHDASHPFX(str) .__##str
# else
# define DASHDASHPFX(str) __##str
# endif
# define DASHDASHPFX(str) __##str
#if _CALL_ELF == 2
#define CANCEL_FRAMESIZE (FRAME_MIN_SIZE+16+48)