[interpreter] Add basic framework for bytecode handler code generation.

src/compiler/mips64/linkage-mips64.cc

Index: src/compiler/mips64/linkage-mips64.cc
diff --git a/src/compiler/mips64/linkage-mips64.cc b/src/compiler/mips64/linkage-mips64.cc
index 5c8c58c73f7d4ac5dfb1ee3c2aee6a0d5fad0efc..ccdb11d55014ae2efee20de0beb7ec4f78a1e645 100644
--- a/src/compiler/mips64/linkage-mips64.cc
+++ b/src/compiler/mips64/linkage-mips64.cc
@@ -17,6 +17,8 @@ struct MipsLinkageHelperTraits {
   static Register ReturnValue2Reg() { return v1; }
   static Register JSCallFunctionReg() { return a1; }
   static Register ContextReg() { return cp; }
+  static Register InterpreterBytecodePointerReg() { return s0; }
+  static Register InterpreterDispatchTableReg() { return s1; }
   static Register RuntimeCallFunctionReg() { return a1; }
   static Register RuntimeCallArgCountReg() { return a0; }
   static RegList CCalleeSaveRegisters() {
@@ -69,9 +71,8 @@ CallDescriptor* Linkage::GetSimplifiedCDescriptor(Zone* zone,
 }
 
 
-CallDescriptor* Linkage::GetInterpreterDispatchDescriptor(
-    Zone* zone, const MachineSignature* sig) {
-  return LH::GetInterpreterDispatchDescriptor(zone, sig);
+CallDescriptor* Linkage::GetInterpreterDispatchDescriptor(Zone* zone) {
+  return LH::GetInterpreterDispatchDescriptor(zone);
 }
 
 }  // namespace compiler