2004-09-03 H.J. Lu <hongjiu.lu@intel.com>

	PR target/14925:
	Makefile.in (LIB2ADDEHSTATIC): New.
	(LIB2ADDEHSHARED): New.
	(LIBUNWIND): New.
	(LIBUNWINDDEP): New.
	(SHLIBUNWIND_LINK): New.
	(SHLIBUNWIND_INSTALL): New.
	(libgcc.mk): Pass LIB2ADDEHSTATIC, LIB2ADDEHSHARED, LIBUNWIND,
	LIBUNWINDDEP, SHLIBUNWIND_LINK and SHLIBUNWIND_INSTALL.
	(clean): Remove libunwind*
	(stage1-start): Remove and copy stage1/libunwind*.
	(stage2-start): Remove and copy stage2/libunwind*.
	(stage3-start): Remove and copy stage3/libunwind*.
	(stage4-start): Remove and copy stage4/libunwind*.
	(stageprofile-start): Remove and copy stageprofile/libunwind*.
	(stagefeedback-start): Remove and copy stagefeedback/libunwind*.

	* config.gcc (ia64*-*-linux*): Always add t-libunwind to
	tmake_file. Add t-libunwind-elf and ia64/t-glibc-libunwind to
	tmake_file if --with-system-libunwind isn't used.

	* config/ia64/t-glibc-libunwind: New file.
	* config/t-libunwind-elf: Likewise.
	* unwind-compat.c: Likewise.
	* unwind-compat.h: Likewise.
	* unwind-dw2-fde-compat.c: Likewise.

	* config/ia64/t-glibc (LIB2ADDEH): Updated.
	* config/ia64/t-hpux (T_CFLAGS): Add -DUSE_LIBUNWIND_EXCEPTIONS.

	* config/ia64/unwind-ia64.c: Include "unwind-compat.h". Define
	aliases if needed.
	* unwind-dw2-fde-glibc.c: Likewise.
	* unwind-dw2.c: Likewise.

	* config/t-libunwind (LIB2ADDEH): Updated.
	(LIB2ADDEHSTATIC): New.
	(T_CFLAGS): Add -DUSE_LIBUNWIND_EXCEPTIONS.
	(TARGET_LIBGCC2_CFLAGS): Set to -DUSE_GAS_SYMVER.

	* configure.ac: Change --enable-libunwind-exceptions to
	--with-system-libunwind. Don't define USE_LIBUNWIND_EXCEPTIONS.
	* configure: Regenerated.
	* config.in: Updated.

	* doc/install.texi (ia64-*-linux): Require libunwind 0.98 or
	above and mention --with-system-libunwind.
	(ia64-*-hpux*): Mention --enable-libunwind-exceptions is
	removed in gcc 3.4.3 and later.

	* gcc.c (init_spec): Add -lunwind to -lgcc_s if
	USE_LIBUNWIND_EXCEPTIONS is defined.

	* mklibgcc.in: Support libunwind.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@87066 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 206 insertions, 0 deletions

diff --git a/gcc/unwind-compat.c b/gcc/unwind-compat.c
new file mode 100644
index 00000000000..26f45ac8e57
--- /dev/null
+++ b/gcc/unwind-compat.c
@@ -0,0 +1,206 @@
+/* Backward compatibility unwind routines.
+   Copyright (C) 2004
+   Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   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.
+
+   In addition to the permissions in the GNU General Public License, the
+   Free Software Foundation gives you unlimited permission to link the
+   compiled version of this file into combinations with other programs,
+   and to distribute those combinations without any restriction coming
+   from the use of this file.  (The General Public License restrictions
+   do apply in other respects; for example, they cover modification of
+   the file, and distribution when not linked into a combined
+   executable.)
+
+   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 GCC; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#if defined (USE_GAS_SYMVER) && defined (USE_LIBUNWIND_EXCEPTIONS)
+#include "unwind.h"
+#include "unwind-dw2-fde.h"
+#include "unwind-compat.h"
+
+extern _Unwind_Reason_Code __libunwind_Unwind_Backtrace
+  (_Unwind_Trace_Fn, void *);
+
+_Unwind_Reason_Code
+_Unwind_Backtrace (_Unwind_Trace_Fn trace, void *trace_argument)
+{
+  return __libunwind_Unwind_Backtrace (trace, trace_argument);
+}
+symver (_Unwind_Backtrace, GCC_3.3);
+
+extern void __libunwind_Unwind_DeleteException
+  (struct _Unwind_Exception *);
+
+void
+_Unwind_DeleteException (struct _Unwind_Exception *exc)
+{
+  return __libunwind_Unwind_DeleteException (exc);
+}
+symver (_Unwind_DeleteException, GCC_3.0);
+
+extern void * __libunwind_Unwind_FindEnclosingFunction (void *);
+
+void *
+_Unwind_FindEnclosingFunction (void *pc)
+{
+  return __libunwind_Unwind_FindEnclosingFunction (pc);
+}
+symver (_Unwind_FindEnclosingFunction, GCC_3.3);
+
+extern _Unwind_Reason_Code __libunwind_Unwind_ForcedUnwind
+  (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
+
+_Unwind_Reason_Code
+_Unwind_ForcedUnwind (struct _Unwind_Exception *exc,
+		      _Unwind_Stop_Fn stop, void * stop_argument)
+{
+  return __libunwind_Unwind_ForcedUnwind (exc, stop, stop_argument);
+}
+symver (_Unwind_ForcedUnwind, GCC_3.0);
+
+extern _Unwind_Word __libunwind_Unwind_GetCFA
+  (struct _Unwind_Context *);
+
+_Unwind_Word
+_Unwind_GetCFA (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetCFA (context);
+}
+symver (_Unwind_GetCFA, GCC_3.3);
+
+#ifdef __ia64__
+extern _Unwind_Word __libunwind_Unwind_GetBSP
+  (struct _Unwind_Context *);
+
+_Unwind_Word
+_Unwind_GetBSP (struct _Unwind_Context * context)
+{
+  return __libunwind_Unwind_GetBSP (context);
+}
+symver (_Unwind_GetBSP, GCC_3.3.2);
+#else
+extern _Unwind_Ptr __libunwind_Unwind_GetDataRelBase
+  (struct _Unwind_Context *);
+
+_Unwind_Ptr
+_Unwind_GetDataRelBase (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetDataRelBase (context);
+}
+symver (_Unwind_GetDataRelBase, GCC_3.0);
+
+extern _Unwind_Ptr __libunwind_Unwind_GetTextRelBase
+  (struct _Unwind_Context *);
+
+_Unwind_Ptr
+_Unwind_GetTextRelBase (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetTextRelBase (context);
+}
+symver (_Unwind_GetTextRelBase, GCC_3.0);
+#endif
+
+extern _Unwind_Word __libunwind_Unwind_GetGR
+  (struct _Unwind_Context *, int );
+
+_Unwind_Word
+_Unwind_GetGR (struct _Unwind_Context *context, int index)
+{
+  return __libunwind_Unwind_GetGR (context, index);
+}
+symver (_Unwind_GetGR, GCC_3.0);
+
+extern _Unwind_Ptr __libunwind_Unwind_GetIP (struct _Unwind_Context *);
+
+_Unwind_Ptr
+_Unwind_GetIP (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetIP (context);
+}
+symver (_Unwind_GetIP, GCC_3.0);
+
+extern void *__libunwind_Unwind_GetLanguageSpecificData
+  (struct _Unwind_Context *);
+
+void *
+_Unwind_GetLanguageSpecificData (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetLanguageSpecificData (context);
+}
+symver (_Unwind_GetLanguageSpecificData, GCC_3.0);
+
+extern _Unwind_Ptr __libunwind_Unwind_GetRegionStart
+  (struct _Unwind_Context *);
+
+_Unwind_Ptr
+_Unwind_GetRegionStart (struct _Unwind_Context *context)
+{
+  return __libunwind_Unwind_GetRegionStart (context);
+}
+symver (_Unwind_GetRegionStart, GCC_3.0);
+
+extern _Unwind_Reason_Code __libunwind_Unwind_RaiseException
+  (struct _Unwind_Exception *);
+
+_Unwind_Reason_Code
+_Unwind_RaiseException(struct _Unwind_Exception *exc)
+{
+  return __libunwind_Unwind_RaiseException (exc);
+}
+symver (_Unwind_RaiseException, GCC_3.0);
+
+extern void __libunwind_Unwind_Resume (struct _Unwind_Exception *);
+
+void
+_Unwind_Resume (struct _Unwind_Exception *exc)
+{
+  __libunwind_Unwind_Resume (exc);
+}
+symver (_Unwind_Resume, GCC_3.0);
+
+extern _Unwind_Reason_Code __libunwind_Unwind_Resume_or_Rethrow
+   (struct _Unwind_Exception *);
+
+_Unwind_Reason_Code
+_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exc)
+{
+  return __libunwind_Unwind_Resume_or_Rethrow (exc);
+}
+symver (_Unwind_Resume_or_Rethrow, GCC_3.3);
+
+extern void __libunwind_Unwind_SetGR
+  (struct _Unwind_Context *, int, _Unwind_Word);
+
+void
+_Unwind_SetGR (struct _Unwind_Context *context, int index,
+	       _Unwind_Word val) 
+{
+  __libunwind_Unwind_SetGR (context, index, val);
+}
+symver (_Unwind_SetGR, GCC_3.0);
+
+extern void __libunwind_Unwind_SetIP
+  (struct _Unwind_Context *, _Unwind_Ptr);
+
+void
+_Unwind_SetIP (struct _Unwind_Context *context, _Unwind_Ptr val)
+{
+  return __libunwind_Unwind_SetIP (context, val);
+}
+symver (_Unwind_SetIP, GCC_3.0);
+#endif