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

src/compiler/arm/linkage-arm.cc

Index: src/compiler/arm/linkage-arm.cc
diff --git a/src/compiler/arm/linkage-arm.cc b/src/compiler/arm/linkage-arm.cc
index 142a72cb0d79e48e63d25b8c294ea499a39aedba..861743674cc17c467430f42f1533a52426b6092f 100644
--- a/src/compiler/arm/linkage-arm.cc
+++ b/src/compiler/arm/linkage-arm.cc
@@ -17,9 +17,15 @@ struct ArmLinkageHelperTraits {
   static Register ReturnValue2Reg() { return r1; }
   static Register JSCallFunctionReg() { return r1; }
   static Register ContextReg() { return cp; }
-  static Register InterpreterBytecodeOffsetReg() { return r5; }
-  static Register InterpreterBytecodeArrayReg() { return r6; }
-  static Register InterpreterDispatchTableReg() { return r8; }
+  static Register InterpreterBytecodeOffsetReg() {
+    return kInterpreterBytecodeOffsetRegister;
+  }
+  static Register InterpreterBytecodeArrayReg() {
+    return kInterpreterBytecodeArrayRegister;
+  }
+  static Register InterpreterDispatchTableReg() {
+    return kInterpreterDispatchTableRegister;
+  }
   static Register RuntimeCallFunctionReg() { return r1; }
   static Register RuntimeCallArgCountReg() { return r0; }
   static RegList CCalleeSaveRegisters() {