From: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Mon, 5 Mar 2012 17:11:48 +0000 (+0000)
Subject: gdb/
X-Git-Tag: cygwin-1_7_12-release~124
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=75528772a7c1d29fc900c139641ab10b1a5e6cec;p=external%2Fbinutils.git

gdb/
	* libunwind-frame.c (LIBUNWIND_SO): Change .7 to .8.
	[!LIBUNWIND_SO] (LIBUNWIND_SO_7): New #define.
	(libunwind_load): New variable so_error, use it for dlerror.  Try to
	load also LIBUNWIND_SO_7.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index cb9ebaf..2da944d 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,10 @@
+2012-03-05  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* libunwind-frame.c (LIBUNWIND_SO): Change .7 to .8.
+	[!LIBUNWIND_SO] (LIBUNWIND_SO_7): New #define.
+	(libunwind_load): New variable so_error, use it for dlerror.  Try to
+	load also LIBUNWIND_SO_7.
+
 2012-03-05  Pedro Alves  <palves@redhat.com>
 
 	* i387-tdep.c (i387_supply_xsave): Assert the xsave section buffer
diff --git a/gdb/libunwind-frame.c b/gdb/libunwind-frame.c
index babdecc..1421d92 100644
--- a/gdb/libunwind-frame.c
+++ b/gdb/libunwind-frame.c
@@ -95,7 +95,11 @@ struct libunwind_frame_cache
 #ifndef LIBUNWIND_SO
 /* Use the stable ABI major version number.  `libunwind-ia64.so' is a link time
    only library, not a runtime one.  */
-#define LIBUNWIND_SO "libunwind-" STRINGIFY(UNW_TARGET) ".so.7"
+#define LIBUNWIND_SO "libunwind-" STRINGIFY(UNW_TARGET) ".so.8"
+
+/* Provide also compatibility with older .so.  The two APIs are compatible, .8
+   is only extended a bit, GDB does not use the extended API at all.  */
+#define LIBUNWIND_SO_7 "libunwind-" STRINGIFY(UNW_TARGET) ".so.7"
 #endif
 
 static char *get_reg_name = STRINGIFY(UNW_OBJ(get_reg));
@@ -491,14 +495,28 @@ static int
 libunwind_load (void)
 {
   void *handle;
+  char *so_error = NULL;
 
   handle = dlopen (LIBUNWIND_SO, RTLD_NOW);
   if (handle == NULL)
     {
+      so_error = xstrdup (dlerror ());
+#ifdef LIBUNWIND_SO_7
+      handle = dlopen (LIBUNWIND_SO_7, RTLD_NOW);
+#endif /* LIBUNWIND_SO_7 */
+    }
+  if (handle == NULL)
+    {
       fprintf_unfiltered (gdb_stderr, _("[GDB failed to load %s: %s]\n"),
-                          LIBUNWIND_SO, dlerror ());
-      return 0;
+			  LIBUNWIND_SO, so_error);
+#ifdef LIBUNWIND_SO_7
+      fprintf_unfiltered (gdb_stderr, _("[GDB failed to load %s: %s]\n"),
+			  LIBUNWIND_SO_7, dlerror ());
+#endif /* LIBUNWIND_SO_7 */
     }
+  xfree (so_error);
+  if (handle == NULL)
+    return 0;
 
   /* Initialize pointers to the dynamic library functions we will use.  */