Update.

22003-09-04  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/generic/unwind.h (_Unwind_GetBSP): Add prototype.

003-09-03  Ulrich Drepper  <drepper@redhat.com>

ChangeLog

@@ -1,4 +1,8 @@
-2003-09-03  Ulrich Drepper  <drepper@redhat.com>
+22003-09-04  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/generic/unwind.h (_Unwind_GetBSP): Add prototype.
+
+003-09-03  Ulrich Drepper  <drepper@redhat.com>
 
 	* nss/getXXbyYY_r.c (INTERNAL): Explicitly set errno and avoid
 	returning ERANGE if this wasn't intended.

nptl/ChangeLog

@@ -1,3 +1,14 @@
+2003-09-04  Jakub Jelinek  <jakub@redhat.com>
+
+	* unwind-forcedunwind.c: Move to...
+	* sysdeps/pthread/unwind-forcedunwind.c: ...here.
+	(pthread_cancel_init): Use ARCH_CANCEL_INIT if defined.
+	* sysdeps/pthread/jmpbuf-unwind.h: New file.
+	* sysdeps/unix/sysv/linux/ia64/unwind-forcedunwind.c: New file.
+	* sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h: New file.
+	* unwind.c: Include jmpbuf-unwind.h.
+	(unwind_stop): Use _JMPBUF_CFA_UNWINDS macro.
+
 2003-09-02  Jakub Jelinek  <jakub@redhat.com>
 
 	* sysdeps/unix/sysv/linux/ia64/bits/local_lim.h: New file.

nptl/sysdeps/pthread/jmpbuf-unwind.h

@@ -0,0 +1,24 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <setjmp.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS(_jmpbuf, _context) \
+  _JMPBUF_UNWINDS (_jmpbuf, (void *) _Unwind_GetCFA (_context))

nptl/sysdeps/pthread/unwind-forcedunwind.c

@@ -46,7 +46,11 @@ pthread_cancel_init (void)
       || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL
       || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind"))
 	 == NULL
-      || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL)
+      || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL
+#ifdef ARCH_CANCEL_INIT
+      || ARCH_CANCEL_INIT (handle)
+#endif
+      )
     __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n");
 
   libgcc_s_resume = resume;

nptl/sysdeps/unix/sysv/linux/ia64/jmpbuf-unwind.h

@@ -0,0 +1,29 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <setjmp.h>
+#include <unwind.h>
+
+#define _JMPBUF_CFA_UNWINDS(_jmpbuf, _context) \
+  ({ void *_cfa = (void *) _Unwind_GetCFA (_context);			\
+     (_cfa < (void *)(((long *)(_jmpbuf))[0])				\
+      || (_cfa == (void *)(((long *)(_jmpbuf))[0])			\
+	  && (void *) _Unwind_GetBSP (_context)				\
+	     >= (void *)(((long *)(_jmpbuf))[17])));			\
+  })

nptl/sysdeps/unix/sysv/linux/ia64/unwind-forcedunwind.c

@@ -0,0 +1,38 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <unwind.h>
+#include <pthreadP.h>
+
+static _Unwind_Word (*libgcc_s_getbsp) (struct _Unwind_Context *);
+
+#define ARCH_CANCEL_INIT(handle) \
+  ((libgcc_s_getbsp = __libc_dlsym (handle, "_Unwind_GetBSP")) == NULL)
+
+#include <sysdeps/pthread/unwind-forcedunwind.c>
+
+_Unwind_Word
+_Unwind_GetBSP (struct _Unwind_Context *context)
+{
+  if (__builtin_expect (libgcc_s_getbsp == NULL, 0))
+    pthread_cancel_init ();
+  return libgcc_s_getbsp (context);
+}

nptl/unwind.c

@@ -23,7 +23,7 @@
 #include <string.h>
 #include <unistd.h>
 #include "pthreadP.h"
-
+#include "jmpbuf-unwind.h"
 
 #ifdef HAVE_FORCED_UNWIND
 
@@ -41,8 +41,7 @@ unwind_stop (int version, _Unwind_Action actions,
      of a function is NOT within it's stack frame; it's the SP of the
      previous frame.  */
   if ((actions & _UA_END_OF_STACK)
-      || ! _JMPBUF_UNWINDS  (buf->cancel_jmp_buf[0].jmp_buf,
+      || ! _JMPBUF_CFA_UNWINDS  (buf->cancel_jmp_buf[0].jmp_buf, context))
-			     _Unwind_GetCFA (context)))
     __libc_longjmp ((struct __jmp_buf_tag *) buf->cancel_jmp_buf, 1);
 
   return _URC_NO_REASON;

sysdeps/generic/unwind.h

@@ -200,6 +200,9 @@ _Unwind_GetTextRelBase (struct _Unwind_Context *_C)
   abort ();
   return 0;
 }
+
+/* @@@ Retrieve the Backing Store Pointer of the given context.  */
+extern _Unwind_Word _Unwind_GetBSP (struct _Unwind_Context *);
 #else
 extern _Unwind_Ptr _Unwind_GetDataRelBase (struct _Unwind_Context *);
 extern _Unwind_Ptr _Unwind_GetTextRelBase (struct _Unwind_Context *);