From bf18d0315ade835286d0c788d669c49d434fb1f5 Mon Sep 17 00:00:00 2001
From: Michael Meissner <meissner@gcc.gnu.org>
Date: Wed, 1 Mar 1995 20:30:14 +0000
Subject: [PATCH] Clone unwind_function for powerpc

From-SVN: r9103
---
 gcc/libgcc2.c | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/gcc/libgcc2.c b/gcc/libgcc2.c
index b8891dab631..39598efb038 100644
--- a/gcc/libgcc2.c
+++ b/gcc/libgcc2.c
@@ -2298,7 +2298,25 @@ __unwind_function(void *ptr)
   asm("# br");
   asm("mtctr 3;bctr # b 3");
 }
-#endif
+#endif /* rs6000 */
+
+#if #machine(powerpc)
+__unwind_function(void *ptr)
+{
+  asm("mr 31,1");
+  asm("lwz 1,0(1)");
+  asm("lwz 31,-4(1)");
+  asm("# br");
+
+  asm("mr 31,1");
+  asm("lwz 1,0(1)");
+  /* use 31 as a scratch register to restore the link register. */
+  asm("lwz 31, 8(1);mtlr 31 # l lr,8(1)");
+  asm("lwz 31,-4(1)");
+  asm("# br");
+  asm("mtctr 3;bctr # b 3");
+}
+#endif /* powerpc */
 #endif /* L_eh */
 
 #ifdef L_pure
-- 
2.30.2