re PR target/14925 (libunwind enabled gcc generates incompatible libgcc_s.so.1)

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.

From-SVN: r87066

4 files changed, 30 insertions, 1 deletions

diff --git a/gcc/config/ia64/t-glibc b/gcc/config/ia64/t-glibc
index a105662..df4fe9c 100644
--- a/gcc/config/ia64/t-glibc
+++ b/gcc/config/ia64/t-glibc
@@ -1 +1,3 @@
-LIB2ADDEH += $(srcdir)/config/ia64/fde-glibc.c
+# Use system libunwind library on IA-64 GLIBC based system.
+LIB2ADDEH = $(srcdir)/unwind-sjlj.c $(srcdir)/unwind-c.c \
+  $(srcdir)/unwind-compat.c
diff --git a/gcc/config/ia64/t-glibc-libunwind b/gcc/config/ia64/t-glibc-libunwind
new file mode 100644
index 0000000..df78f1d
--- /dev/null
+++ b/gcc/config/ia64/t-glibc-libunwind
@@ -0,0 +1,4 @@
+# Build libunwind for IA-64 GLIBC based system.
+LIBUNWIND = $(srcdir)/config/ia64/fde-glibc.c \
+  $(srcdir)/config/ia64/unwind-ia64.c
+LIBUNWINDDEP = unwind.inc
diff --git a/gcc/config/ia64/t-hpux b/gcc/config/ia64/t-hpux
index 597c2ac..d89f174 100644
--- a/gcc/config/ia64/t-hpux
+++ b/gcc/config/ia64/t-hpux
@@ -23,6 +23,8 @@ LIBGCC1_TEST =
 # We do not want to include the EH stuff that linux uses, we want to use
 # the HP-UX libunwind library.
 
+T_CFLAGS += -DUSE_LIBUNWIND_EXCEPTIONS
+
 LIB2ADDEH =
 
 SHLIB_EXT = .so
diff --git a/gcc/config/ia64/unwind-ia64.c b/gcc/config/ia64/unwind-ia64.c
index 1c88b72..692f07b 100644
--- a/gcc/config/ia64/unwind-ia64.c
+++ b/gcc/config/ia64/unwind-ia64.c
@@ -37,6 +37,7 @@
 #include "tm.h"
 #include "unwind.h"
 #include "unwind-ia64.h"
+#include "unwind-compat.h"
 #include "ia64intrin.h"
 
 /* This isn't thread safe, but nice for occasional tests.  */
@@ -2381,4 +2382,24 @@ uw_identify_context (struct _Unwind_Context *context)
 }
 
 #include "unwind.inc"
+
+#if defined (USE_GAS_SYMVER) && defined (SHARED) && defined (USE_LIBUNWIND_EXCEPTIONS)
+alias (_Unwind_Backtrace);
+alias (_Unwind_DeleteException);
+alias (_Unwind_FindEnclosingFunction);
+alias (_Unwind_FindTableEntry);
+alias (_Unwind_ForcedUnwind);
+alias (_Unwind_GetBSP);
+alias (_Unwind_GetCFA);
+alias (_Unwind_GetGR);
+alias (_Unwind_GetIP);
+alias (_Unwind_GetLanguageSpecificData);
+alias (_Unwind_GetRegionStart);
+alias (_Unwind_RaiseException);
+alias (_Unwind_Resume);
+alias (_Unwind_Resume_or_Rethrow);
+alias (_Unwind_SetGR);
+alias (_Unwind_SetIP);
+#endif
+
 #endif