From 82e2ba9a036d0a8a01344271ebd2db69f3b20cc7 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 14 Jan 2004 04:11:30 +0000
Subject: [PATCH] Update.

2004-01-13  Ulrich Drepper  <drepper@redhat.com>

	* posix/regex.c: Support crappy compilers and platforms which have
	problems with alloca.
	* posix/regex_internal.h: Likewise.
	Patch by Paolo Bonzini.
---
 ChangeLog                                     |  7 ++++
 .../linux/powerpc/powerpc32/sysdep-cancel.h   | 36 ++++++++++++++++---
 .../linux/powerpc/powerpc64/sysdep-cancel.h   | 29 ++++++++++++---
 posix/regex.c                                 | 28 +++++++++++++++
 posix/regex_internal.h                        |  4 ---
 5 files changed, 92 insertions(+), 12 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 5dee2a9921..c21b0324bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2004-01-13  Ulrich Drepper  <drepper@redhat.com>
+
+	* posix/regex.c: Support crappy compilers and platforms which have
+	problems with alloca.
+	* posix/regex_internal.h: Likewise.
+	Patch by Paolo Bonzini.
+
 2004-01-12  Paolo Bonzini  <bonzini@gnu.org>
 
 	* posix/regcomp.c [_LIBC && !RE_ENABLE_I18N]:
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
index b5d0665cda..0ee10c1c3a 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -86,13 +86,41 @@
 #  define CDISABLE	bl JUMPTARGET(__librt_disable_asynccancel)
 # endif
 
-# ifndef __ASSEMBLER__
-#  define SINGLE_THREAD_P						\
+# ifdef HAVE_TLS_SUPPORT
+#  ifndef __ASSEMBLER__
+#   define SINGLE_THREAD_P						\
   __builtin_expect (THREAD_GETMEM (THREAD_SELF, p_multiple_threads) == 0, 1)
-# else
-#  define SINGLE_THREAD_P						\
+#  else
+#   define SINGLE_THREAD_P						\
   lwz 10,MULTIPLE_THREADS_OFFSET(2);					\
   cmpwi 10,0
+#  endif
+# else
+#  if !defined NOT_IN_libc
+#   define __local_multiple_threads __libc_multiple_threads
+#  else
+#   define __local_multiple_threads __librt_multiple_threads
+#  endif
+#  ifndef __ASSEMBLER__
+extern int __local_multiple_threads attribute_hidden;
+#   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
+#  else
+#   if !defined PIC
+#    define SINGLE_THREAD_P						\
+  lis 10,__local_multiple_threads@ha;					\
+  lwz 10,__local_multiple_threads@l(10);				\
+  cmpwi 10,0
+#   else
+#    define SINGLE_THREAD_P						\
+  mflr 9;								\
+  bl _GLOBAL_OFFSET_TABLE_@local-4;					\
+  mflr 10;								\
+  mtlr 9;								\
+  lwz 10,__local_multiple_threads@got(10);				\
+  lwz 10,0(10);								\
+  cmpwi 10,0
+#   endif
+#  endif
 # endif
 
 #elif !defined __ASSEMBLER__
diff --git a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
index e789d47b9d..0c74676766 100644
--- a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
+++ b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h
@@ -89,13 +89,34 @@
 #  define __local_multiple_threads __librt_multiple_threads
 # endif
 
-# ifndef __ASSEMBLER__
-#  define SINGLE_THREAD_P						\
+# ifdef HAVE_TLS_SUPPORT
+#  ifndef __ASSEMBLER__
+#   define SINGLE_THREAD_P						\
   __builtin_expect (THREAD_GETMEM (THREAD_SELF, p_multiple_threads) == 0, 1)
-# else
-#  define SINGLE_THREAD_P						\
+#  else
+#   define SINGLE_THREAD_P						\
   lwz 10,MULTIPLE_THREADS_OFFSET(13);					\
   cmpwi 10,0
+#  endif
+# else /* !HAVE_TLS_SUPPORT */
+#  ifndef __ASSEMBLER__
+extern int __local_multiple_threads
+#   if !defined NOT_IN_libc || defined IS_IN_libpthread
+  attribute_hidden;
+#   else
+  ;
+#   endif
+#   define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
+#  else
+#   define SINGLE_THREAD_P						\
+	.section	".toc","aw";					\
+.LC__local_multiple_threads:;						\
+	.tc __local_multiple_threads[TC],__local_multiple_threads;	\
+  .previous;								\
+  ld    10,.LC__local_multiple_threads@toc(2);				\
+  lwz   10,0(10);							\
+  cmpwi 10,0
+#  endif
 # endif
 
 #elif !defined __ASSEMBLER__
diff --git a/posix/regex.c b/posix/regex.c
index f18178a479..4c3826238b 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -18,6 +18,34 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef _AIX
+#pragma alloca
+#else
+# ifndef allocax           /* predefined by HP cc +Olibcalls */
+#  ifdef __GNUC__
+#   define alloca(size) __builtin_alloca (size)
+#  else
+#   if HAVE_ALLOCA_H
+#    include <alloca.h>
+#   else
+#    ifdef __hpux
+        void *alloca ();
+#    else
+#     if !defined __OS2__ && !defined WIN32
+        char *alloca ();
+#     else
+#      include <malloc.h>       /* OS/2 defines alloca in here */
+#     endif
+#    endif
+#   endif
+#  endif
+# endif
+#endif
+
 #ifdef _LIBC
 /* We have to keep the namespace clean.  */
 # define regfree(preg) __regfree (preg)
diff --git a/posix/regex_internal.h b/posix/regex_internal.h
index 6cbc48eee5..7a7d964bd5 100644
--- a/posix/regex_internal.h
+++ b/posix/regex_internal.h
@@ -21,10 +21,6 @@
 #ifndef _REGEX_INTERNAL_H
 #define _REGEX_INTERNAL_H 1
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
 #include <assert.h>
 #include <ctype.h>
 #include <limits.h>