[interpreter] Add Interpreter{Entry,Exit}Trampoline builtins.

src/compiler/arm64/linkage-arm64.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.
 
 #include "src/assembler.h"
 #include "src/code-stubs.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/linkage-impl.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 struct Arm64LinkageHelperTraits {
   static Register ReturnValueReg() { return x0; }
   static Register ReturnValue2Reg() { return x1; }
   static Register JSCallFunctionReg() { return x1; }
   static Register ContextReg() { return cp; }
-  static Register InterpreterBytecodeOffsetReg() { return x19; }
-  static Register InterpreterBytecodeArrayReg() { return x20; }
-  static Register InterpreterDispatchTableReg() { return x21; }
+  static Register InterpreterBytecodeOffsetReg() {
+    return kInterpreterBytecodeOffsetRegister;
+  }
+  static Register InterpreterBytecodeArrayReg() {
+    return kInterpreterBytecodeArrayRegister;
+  }
+  static Register InterpreterDispatchTableReg() {
+    return kInterpreterDispatchTableRegister;
+  }
   static Register RuntimeCallFunctionReg() { return x1; }
   static Register RuntimeCallArgCountReg() { return x0; }
   static RegList CCalleeSaveRegisters() {
     return (1 << x19.code()) | (1 << x20.code()) | (1 << x21.code()) |
            (1 << x22.code()) | (1 << x23.code()) | (1 << x24.code()) |
            (1 << x25.code()) | (1 << x26.code()) | (1 << x27.code()) |
            (1 << x28.code()) | (1 << x29.code()) | (1 << x30.code());
   }
   static RegList CCalleeSaveFPRegisters() {
     return (1 << d8.code()) | (1 << d9.code()) | (1 << d10.code()) |
@@ skipping 42 matching lines @@
 }
 
 
 CallDescriptor* Linkage::GetInterpreterDispatchDescriptor(Zone* zone) {
   return LH::GetInterpreterDispatchDescriptor(zone);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8