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Re: [PATCH] powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define

From: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
To: libc-alpha at sourceware dot org
Date: Mon, 09 Mar 2015 16:51:02 -0300
Subject: Re: [PATCH] powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define
Authentication-results: sourceware.org; auth=none
References: <54D124C1 dot 3010208 at linux dot vnet dot ibm dot com> <54D8B844 dot 2070507 at linux dot vnet dot ibm dot com> <54F5FED1 dot 6080001 at linux dot vnet dot ibm dot com>
Although this touch various non-powerpc files, this change is only used
on powerpc.  If nobody objects I will commit it today or later tomorrow.


On 03-03-2015 15:34, Adhemerval Zanella wrote:
> Ping.
>
> On 09-02-2015 11:38, Adhemerval Zanella wrote:
>> Ping.
>>
>> On 03-02-2015 17:42, Adhemerval Zanella wrote:
>>> 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.
>>>
>>> Checked on powerpc64.
>>>
>>> --
>>>
>>> 	* 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.
>>>
>>> --
>>>
>>> diff --git a/config.h.in b/config.h.in
>>> index 695ca35..a1ae478 100644
>>> --- a/config.h.in
>>> +++ b/config.h.in
>>> @@ -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
>>>
>>> diff --git a/include/libc-symbols.h b/include/libc-symbols.h
>>> index 2da0ab4..ca3fe00 100644
>>> --- a/include/libc-symbols.h
>>> +++ b/include/libc-symbols.h
>>> @@ -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)				\
>>> -  .globl C_SYMBOL_NAME (alias) ASM_LINE_SEP		\
>>> -  .set C_SYMBOL_NAME (alias),C_SYMBOL_NAME (original)
>>> -#  else
>>> -#   define strong_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)
>>> -#   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__
>>> diff --git a/nptl_db/db-symbols.h b/nptl_db/db-symbols.h
>>> index 47fe951..0f27e67 100644
>>> --- a/nptl_db/db-symbols.h
>>> +++ b/nptl_db/db-symbols.h
>>> @@ -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
>>> diff --git a/nptl_db/td_symbol_list.c b/nptl_db/td_symbol_list.c
>>> index 6b14d36..6915ed7 100644
>>> --- a/nptl_db/td_symbol_list.c
>>> +++ b/nptl_db/td_symbol_list.c
>>> @@ -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;
>>>  }
>>> diff --git a/sysdeps/powerpc/powerpc64/configure b/sysdeps/powerpc/powerpc64/configure
>>> index 92ec607..d4deee7 100644
>>> --- a/sysdeps/powerpc/powerpc64/configure
>>> +++ b/sysdeps/powerpc/powerpc64/configure
>>> @@ -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 ${libc_cv_overlapping_opd+:} false; then :
>>> diff --git a/sysdeps/powerpc/powerpc64/configure.ac b/sysdeps/powerpc/powerpc64/configure.ac
>>> index 67aac66..9e9881c 100644
>>> --- a/sysdeps/powerpc/powerpc64/configure.ac
>>> +++ b/sysdeps/powerpc/powerpc64/configure.ac
>>> @@ -1,25 +1,6 @@
>>>  GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
>>>  # Local configure fragment for sysdeps/powerpc/powerpc64.
>>>
>>> -# The Aix ld uses global .symbol_names instead of symbol_names
>>> -# and unfortunately early Linux PPC64 linkers use it as well.
>>> -AC_CACHE_CHECK(for support for omitting dot symbols,
>>> -libc_cv_omit_dot_syms, [dnl
>>> -libc_cv_omit_dot_syms=no
>>> -echo 'void foo (void) {}' > conftest.c
>>> -if AC_TRY_COMMAND(${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
>>> diff --git a/sysdeps/powerpc/powerpc64/sysdep.h b/sysdeps/powerpc/powerpc64/sysdep.h
>>> index 1f4efe6..bf2a884 100644
>>> --- a/sysdeps/powerpc/powerpc64/sysdep.h
>>> +++ b/sysdeps/powerpc/powerpc64/sysdep.h
>>> @@ -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 */
>>> diff --git a/sysdeps/powerpc/powerpc64/tls-macros.h b/sysdeps/powerpc/powerpc64/tls-macros.h
>>> index 198215d..42a95ec 100644
>>> --- a/sysdeps/powerpc/powerpc64/tls-macros.h
>>> +++ b/sysdeps/powerpc/powerpc64/tls-macros.h
>>> @@ -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;							      \
>>> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
>>> index 6579757..5cd7ddb 100644
>>> --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
>>> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
>>> @@ -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)
>>>
Follow-Ups:
- Re: [PATCH] powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define
  - From: Adhemerval Zanella
References:
- Re: [PATCH] powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME define
  - From: Adhemerval Zanella
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