Contribution of PowerPC port.

src/ppc/lithium-gap-resolver-ppc.h

Index: src/ppc/lithium-gap-resolver-ppc.h
diff --git a/src/mips64/lithium-gap-resolver-mips64.h b/src/ppc/lithium-gap-resolver-ppc.h
similarity index 88%
copy from src/mips64/lithium-gap-resolver-mips64.h
copy to src/ppc/lithium-gap-resolver-ppc.h
index 0072e526cb12c30f096c4aad62a1b1e891ae9f75..086aa44c0c9ee71b7d8f659af934879c40867999 100644
--- a/src/mips64/lithium-gap-resolver-mips64.h
+++ b/src/ppc/lithium-gap-resolver-ppc.h
@@ -1,9 +1,12 @@
 // Copyright 2011 the V8 project authors. All rights reserved.
+//
+// Copyright IBM Corp. 2012, 2013. All rights reserved.
+//
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_MIPS_LITHIUM_GAP_RESOLVER_MIPS_H_
-#define V8_MIPS_LITHIUM_GAP_RESOLVER_MIPS_H_
+#ifndef V8_PPC_LITHIUM_GAP_RESOLVER_PPC_H_
+#define V8_PPC_LITHIUM_GAP_RESOLVER_PPC_H_
 
 #include "src/v8.h"
 
@@ -57,4 +60,4 @@ class LGapResolver V8_FINAL BASE_EMBEDDED {
 
 } }  // namespace v8::internal
 
-#endif  // V8_MIPS_LITHIUM_GAP_RESOLVER_MIPS_H_
+#endif  // V8_PPC_LITHIUM_GAP_RESOLVER_PPC_H_