[Interpreter] Save and restore dispatch table pointer during calls.

src/ppc/builtins-ppc.cc

Index: src/ppc/builtins-ppc.cc
diff --git a/src/ppc/builtins-ppc.cc b/src/ppc/builtins-ppc.cc
index 45d680ddb806b431a0eb685ceed1773337d62093..a08d0875567b75a9acc583b371b193c9d866e708 100644
--- a/src/ppc/builtins-ppc.cc
+++ b/src/ppc/builtins-ppc.cc
@@ -978,6 +978,10 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ addi(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp));
   __ push(r6);
 
+  // Push dispatch table pointer.
+  __ mov(r3, Operand(ExternalReference::interpreter_dispatch_table_address(
+                 masm->isolate())));
+  __ push(r3);
   // Push zero for bytecode array offset.
   __ li(r3, Operand::Zero());
   __ push(r3);
@@ -1038,9 +1042,8 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
           Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
   __ mov(kInterpreterBytecodeOffsetRegister,
          Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
-  __ mov(kInterpreterDispatchTableRegister,
-         Operand(ExternalReference::interpreter_dispatch_table_address(
-             masm->isolate())));
+  __ lwz(kInterpreterDispatchTableRegister,
+         MemOperand(fp, InterpreterFrameConstants::kDispatchTableFromFp));
 
   // Dispatch to the first bytecode handler for the function.
   __ lbzx(r4, MemOperand(kInterpreterBytecodeArrayRegister,