[Interpreter] Save bytecode offset in interpreter stack frames.

src/mips64/builtins-mips64.cc

Index: src/mips64/builtins-mips64.cc
diff --git a/src/mips64/builtins-mips64.cc b/src/mips64/builtins-mips64.cc
index 2a4d7998f877555337fb14e0342b22499b32922b..af5bf695a16c1dc2177e151694b4ea3c505ccf22 100644
--- a/src/mips64/builtins-mips64.cc
+++ b/src/mips64/builtins-mips64.cc
@@ -762,6 +762,9 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
   __ Daddu(fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp));
   __ Push(a3);
 
+  // Push zero for bytecode array offset.
+  __ Push(zero_reg);
+
   // Get the bytecode array from the function object and load the pointer to the
   // first entry into kInterpreterBytecodeRegister.
   __ ld(a0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
@@ -826,9 +829,8 @@ void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) {
 
   // Load bytecode offset and dispatch table into registers.
   __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex);
-  __ Dsubu(kInterpreterRegisterFileRegister, fp,
-           Operand(2 * kPointerSize +
-                   StandardFrameConstants::kFixedFrameSizeFromFp));
+  __ Daddu(kInterpreterRegisterFileRegister, fp,
+           Operand(InterpreterFrameConstants::kRegisterFilePointerFromFp));
   __ li(kInterpreterBytecodeOffsetRegister,
         Operand(BytecodeArray::kHeaderSize - kHeapObjectTag));
   __ LoadRoot(kInterpreterDispatchTableRegister,