* real.h (struct real_value): Add signalling.

[pf3gnuchains/gcc-fork.git] / gcc / unwind-sjlj.c

diff --git a/gcc/unwind-sjlj.c b/gcc/unwind-sjlj.c
index 662968b..535804c 100644 (file)
--- a/gcc/unwind-sjlj.c
+++ b/gcc/unwind-sjlj.c
@@ -1,33 +1,41 @@
 /* DWARF2 exception handling and frame unwind runtime interface routines.
-   Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+   Free Software Foundation, Inc.
 
-   This file is part of GNU CC.
+   This file is part of GCC.
 
-   GNU CC is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2, or (at your option)
    any later version.
 
-   GNU CC 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 General Public License for more details.
+   GCC 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 General Public
+   License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with GNU CC; see the file COPYING.  If not, write to
-   the Free Software Foundation, 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with GCC; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
 
 #include "tconfig.h"
 #include "tsystem.h"
+#include "coretypes.h"
+#include "tm.h"
 #include "unwind.h"
 #include "gthr.h"
 
-#if USING_SJLJ_EXCEPTIONS
+#ifdef __USING_SJLJ_EXCEPTIONS__
 
 #ifdef DONT_USE_BUILTIN_SETJMP
+#ifndef inhibit_libc
 #include <setjmp.h>
 #else
+typedef void *jmp_buf[JMP_BUF_SIZE];
+extern void longjmp(jmp_buf, int) __attribute__((noreturn));
+#endif
+#else
 #define setjmp __builtin_setjmp
 #define longjmp __builtin_longjmp
 #endif
@@ -57,7 +65,7 @@ struct SjLj_Function_Context
 #ifdef DONT_USE_BUILTIN_SETJMP
   /* We don't know what sort of alignment requirements the system
      jmp_buf has.  We over estimated in except.c, and now we have
-     to match that here just in case the system *didn't* have more 
+     to match that here just in case the system *didn't* have more
      restrictive requirements.  */
   jmp_buf jbuf __attribute__((aligned));
 #else
@@ -70,7 +78,7 @@ struct _Unwind_Context
   struct SjLj_Function_Context *fc;
 };
 
-typedef struct 
+typedef struct
 {
   _Unwind_Personality_Fn personality;
 } _Unwind_FrameState;
@@ -86,15 +94,9 @@ static __gthread_key_t fc_key;
 static int use_fc_key = -1;
 
 static void
-fc_key_dtor (void *ptr)
-{
-  __gthread_key_dtor (fc_key, ptr);
-}
-
-static void
 fc_key_init (void)
 {
-  use_fc_key = __gthread_key_create (&fc_key, fc_key_dtor) == 0;
+  use_fc_key = __gthread_key_create (&fc_key, 0) == 0;
 }
 
 static void
@@ -197,11 +199,30 @@ _Unwind_GetLanguageSpecificData (struct _Unwind_Context *context)
 }
 
 _Unwind_Ptr
-_Unwind_GetRegionStart (struct _Unwind_Context *context)
+_Unwind_GetRegionStart (struct _Unwind_Context *context __attribute__((unused)) )
 {
   return 0;
 }
 
+void *
+_Unwind_FindEnclosingFunction (void *pc)
+{
+  return NULL;
+}
+
+#ifndef __ia64__
+_Unwind_Ptr
+_Unwind_GetDataRelBase (struct _Unwind_Context *context __attribute__((unused)) )
+{
+  return 0;
+}
+
+_Unwind_Ptr
+_Unwind_GetTextRelBase (struct _Unwind_Context *context __attribute__((unused)) )
+{
+  return 0;
+}
+#endif
 \f
 static inline _Unwind_Reason_Code
 uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs)
@@ -225,19 +246,21 @@ uw_update_context (struct _Unwind_Context *context,
   context->fc = context->fc->prev;
 }
 
-static inline void 
+static inline void
 uw_init_context (struct _Unwind_Context *context)
 {
   context->fc = _Unwind_SjLj_GetContext ();
 }
 
 /* ??? There appear to be bugs in integrate.c wrt __builtin_longjmp and
-   virtual-stack-vars.  An inline version of this segfaults on Sparc.  */
-#define uw_install_context(CURRENT, TARGET)    \
-  do {                                         \
-    _Unwind_SjLj_SetContext ((TARGET)->fc);    \
-    longjmp ((TARGET)->fc->jbuf, 1);           \
-  } while (0)
+   virtual-stack-vars.  An inline version of this segfaults on SPARC.  */
+#define uw_install_context(CURRENT, TARGET)            \
+  do                                                   \
+    {                                                  \
+      _Unwind_SjLj_SetContext ((TARGET)->fc);          \
+      longjmp ((TARGET)->fc->jbuf, 1);                 \
+    }                                                  \
+  while (0)
 
 
 static inline _Unwind_Ptr