1 files changed, 90 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-4.5.0/fedora/gcc43-ppc32-retaddr.patch b/meta/recipes-devtools/gcc/gcc-4.5.0/fedora/gcc43-ppc32-retaddr.patch
new file mode 100644
index 0000000000..3de4158eb0
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.5.0/fedora/gcc43-ppc32-retaddr.patch
@@ -0,0 +1,90 @@
+2005-11-28  Jakub Jelinek  <jakub@redhat.com>
+
+        * config/rs6000/rs6000.c (rs6000_return_addr): If COUNT == 0,
+        read word RETURN_ADDRESS_OFFSET bytes above arg_pointer_rtx
+        instead of doing an extran indirection from frame_pointer_rtx.
+
+        * gcc.dg/20051128-1.c: New test.
+
+Index: gcc/config/rs6000/rs6000.c
+===================================================================
+--- gcc/config/rs6000/rs6000.c.orig     2010-03-27 03:27:39.000000000 -0700
++++ gcc/config/rs6000/rs6000.c  2010-06-25 10:18:04.053381930 -0700
+@@ -17646,17 +17646,22 @@
+      don't try to be too clever here.  */
+   if (count != 0 || (DEFAULT_ABI != ABI_AIX && flag_pic))
+     {
++      rtx x;
+       cfun->machine->ra_needs_full_frame = 1;
+ 
+-      return
+-       gen_rtx_MEM
+-         (Pmode,
+-          memory_address
+-          (Pmode,
+-           plus_constant (copy_to_reg
+-                          (gen_rtx_MEM (Pmode,
+-                                        memory_address (Pmode, frame))),
+-                          RETURN_ADDRESS_OFFSET)));
++      if (count == 0)
++       {
++         gcc_assert (frame == frame_pointer_rtx);
++         x = arg_pointer_rtx;
++       }
++      else
++       {
++         x = memory_address (Pmode, frame);
++         x = copy_to_reg (gen_rtx_MEM (Pmode, x));
++       }
++
++      x = plus_constant (x, RETURN_ADDRESS_OFFSET);
++      return gen_rtx_MEM (Pmode, memory_address (Pmode, x));
+     }
+ 
+   cfun->machine->ra_need_lr = 1;
+Index: gcc/testsuite/gcc.dg/20051128-1.c
+===================================================================
+--- /dev/null   1970-01-01 00:00:00.000000000 +0000
++++ gcc/testsuite/gcc.dg/20051128-1.c   2010-06-25 10:18:04.061382856 -0700
+@@ -0,0 +1,41 @@
++/* { dg-do run } */
++/* { dg-options "-O2 -fpic" } */
++
++extern void exit (int);
++extern void abort (void);
++
++int b;
++
++struct A
++{
++  void *pad[147];
++  void *ra, *h;
++  long o;
++};
++
++void
++__attribute__((noinline))
++foo (struct A *a, void *x)
++{
++  __builtin_memset (a, 0, sizeof (a));
++  if (!b)
++    exit (0);
++}
++
++void
++__attribute__((noinline))
++bar (void)
++{
++  struct A a;
++
++  __builtin_unwind_init ();
++  foo (&a, __builtin_return_address (0));
++}
++
++int
++main (void)
++{
++  bar ();
++  abort ();
++  return 0;
++}