obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 116 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/powerpc/spe-unwind-1.c b/gcc/testsuite/gcc.target/powerpc/spe-unwind-1.c
new file mode 100644
index 000000000..84d4bf288
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/spe-unwind-1.c
@@ -0,0 +1,116 @@
+/* Verify that unwinding can find SPE registers in signal frames.  */
+/* Origin: Joseph Myers <joseph@codesourcery.com> */
+/* { dg-do run { target { powerpc*-*-linux* && powerpc_spe } } } */
+/* { dg-options "-fexceptions -fnon-call-exceptions -O2" } */
+
+#include <unwind.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+
+int count;
+char *null;
+int found_reg;
+
+typedef int v2si __attribute__((__vector_size__(8)));
+
+v2si v1 = { 123, 234 };
+v2si v2 = { 345, 456 };
+
+static _Unwind_Reason_Code
+force_unwind_stop (int version, _Unwind_Action actions,
+                   _Unwind_Exception_Class exc_class,
+                   struct _Unwind_Exception *exc_obj,
+                   struct _Unwind_Context *context,
+                   void *stop_parameter)
+{
+  unsigned int reg;
+  if (actions & _UA_END_OF_STACK)
+    abort ();
+  if (_Unwind_GetGR (context, 1215) == 123)
+    found_reg = 1;
+  return _URC_NO_REASON;
+}
+
+static void force_unwind ()
+{
+  struct _Unwind_Exception *exc = malloc (sizeof (*exc));
+  memset (&exc->exception_class, 0, sizeof (exc->exception_class));
+  exc->exception_cleanup = 0;
+
+#ifndef __USING_SJLJ_EXCEPTIONS__
+  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);
+#else
+  _Unwind_SjLj_ForcedUnwind (exc, force_unwind_stop, 0);
+#endif
+
+  abort ();
+}
+
+static void counter (void *p __attribute__((unused)))
+{
+  ++count;
+}
+
+static void handler (void *p __attribute__((unused)))
+{
+  if (count != 2)
+    abort ();
+  if (!found_reg)
+    abort ();
+  exit (0);
+}
+
+static int __attribute__((noinline)) fn5 ()
+{
+  char dummy __attribute__((cleanup (counter)));
+  force_unwind ();
+  return 0;
+}
+
+static void fn4 (int sig)
+{
+  char dummy __attribute__((cleanup (counter)));
+  /* Clobber high part without compiler's knowledge so the only saved
+     copy is from the signal frame.  */
+  asm volatile ("evmergelo 15,15,15");
+  fn5 ();
+  null = NULL;
+}
+
+static void fn3 ()
+{
+  abort ();
+}
+
+static int __attribute__((noinline)) fn2 ()
+{
+  register v2si r15 asm("r15");
+  r15 = v1;
+  asm volatile ("" : "+r" (r15));
+  *null = 0;
+  fn3 ();
+  return 0;
+}
+
+static int __attribute__((noinline)) fn1 ()
+{
+  signal (SIGSEGV, fn4);
+  signal (SIGBUS, fn4);
+  fn2 ();
+  return 0;
+}
+
+static int __attribute__((noinline)) fn0 ()
+{
+  char dummy __attribute__((cleanup (handler)));
+  fn1 ();
+  null = 0;
+  return 0;
+}
+
+int main()
+{ 
+  fn0 ();
+  abort ();
+}