Refactoring various pieces of post interceptor caching.

src/x64/macro-assembler-x64.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 368 matching lines @@
   // arguments passed in because it is constant. At some point we
   // should remove this need and make the runtime routine entry code
   // smarter.
   movq(rax, Immediate(num_arguments));
   movq(rbx, ExternalReference(f));
   CEntryStub ces(f->result_size);
   CallStub(&ces);
 }
 
 
+void MacroAssembler::CallExternalReference(const ExternalReference& ext,
+                                           int num_arguments) {
+  movq(rax, Immediate(num_arguments));
+  movq(rbx, ext);
+
+  CEntryStub stub(1);
+  CallStub(&stub);
+}
+
+
 void MacroAssembler::TailCallRuntime(ExternalReference const& ext,
                                      int num_arguments,
                                      int result_size) {
   // ----------- S t a t e -------------
   //  -- rsp[0] : return address
   //  -- rsp[8] : argument num_arguments - 1
   //  ...
   //  -- rsp[8 * num_arguments] : argument 0 (receiver)
   // -----------------------------------
 
@@ skipping 1486 matching lines @@
   movq(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset));
   // Advances rdx to the end of the Code object header, to the start of
   // the executable code.
   lea(rdx, FieldOperand(rdx, Code::kHeaderSize));
 
   ParameterCount expected(rbx);
   InvokeCode(rdx, expected, actual, flag);
 }
 
 
+void MacroAssembler::InvokeFunction(JSFunction* function,
+                                    const ParameterCount& actual) {
+  ASSERT(function->is_compiled());
+  // Get the function and setup the context.
+  Move(rdi, Handle<JSFunction>(function));
+  movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset));
+
+  // Jump to the cached code (tail call).
+  Handle<Code> code(function->code());
+  ParameterCount expected(function->shared()->formal_parameter_count());
+  InvokeCode(code, expected, actual,
+             RelocInfo::CODE_TARGET, JUMP_FUNCTION);
+}
+
+
 void MacroAssembler::EnterFrame(StackFrame::Type type) {
   push(rbp);
   movq(rbp, rsp);
   push(rsi);  // Context.
   Push(Smi::FromInt(type));
   movq(kScratchRegister, CodeObject(), RelocInfo::EMBEDDED_OBJECT);
   push(kScratchRegister);
   if (FLAG_debug_code) {
     movq(kScratchRegister,
          Factory::undefined_value(),
@@ skipping 636 matching lines @@
 CodePatcher::~CodePatcher() {
   // Indicate that code has changed.
   CPU::FlushICache(address_, size_);
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 } }  // namespace v8::internal