PPC: [interpreter] Fix return address when entering exception handler.

src/ppc/builtins-ppc.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1118 matching lines @@
   Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::SOFT);
 }
 
 
 void Builtins::Generate_InterpreterNotifyLazyDeoptimized(MacroAssembler* masm) {
   Generate_InterpreterNotifyDeoptimizedHelper(masm, Deoptimizer::LAZY);
 }
 
 
 void Builtins::Generate_InterpreterEnterExceptionHandler(MacroAssembler* masm) {
+  // Set the address of the interpreter entry trampoline as a return address.
+  // This simulates the initial call to bytecode handlers in interpreter entry
+  // trampoline. The return will never actually be taken, but our stack walker
+  // uses this address to determine whether a frame is interpreted.
+  __ mov(r0,
+         Operand(masm->isolate()->builtins()->InterpreterEntryTrampoline()));
+  __ mtlr(r0);
+
   Generate_EnterBytecodeDispatch(masm);
 }
 
 
 void Builtins::Generate_CompileLazy(MacroAssembler* masm) {
   CallRuntimePassFunction(masm, Runtime::kCompileLazy);
   GenerateTailCallToReturnedCode(masm);
 }
 
 
@@ skipping 1381 matching lines @@
     __ bkpt(0);
   }
 }
 
 
 #undef __
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC