X64: Create test JS-function and call it.

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 45 matching lines @@
   Abort(msg);
   // will not return here
   bind(&L);
 }
 
 
 void MacroAssembler::ConstructAndTestJSFunction() {
   const int initial_buffer_size = 4 * KB;
   char* buffer = new char[initial_buffer_size];
   MacroAssembler masm(buffer, initial_buffer_size);
+
+  const uint64_t secret = V8_INT64_C(0xdeadbeefcafebabe);
 #define __ ACCESS_MASM((&masm))
   // Construct a simple JSfunction here, using Assembler and MacroAssembler
   // commands.
-  __ int3();
+  __ movq(rax, secret, RelocInfo::NONE);
+  __ ret(0);
 #undef __
   CodeDesc desc;
   masm.GetCode(&desc);
-  // TODO(X64): Create the function object and call it.
+  Code::Flags flags = Code::ComputeFlags(Code::FUNCTION);
+  Object* code = Heap::CreateCode(desc, NULL, flags, Handle<Object>::null());
+  if (!code->IsFailure()) {
+    Handle<Code> code_handle(Code::cast(code));
+    Handle<String> name =
+        Factory::NewStringFromAscii(Vector<const char>("foo", 3), NOT_TENURED);
+    Handle<JSFunction> function =
+        Factory::NewFunction(name,
+                             JS_FUNCTION_TYPE,
+                             JSObject::kHeaderSize,
+                             code_handle,
+                             true);
+    bool pending_exceptions;
+    Handle<Object> result =
+        Execution::Call(function,
+                        Handle<Object>::cast(function),
+                        0,
+                        NULL,
+                        &pending_exceptions);
+    CHECK(result->IsSmi());
+    CHECK(secret == reinterpret_cast<uint64_t>(*result));
+  }
 }
 
 
 void MacroAssembler::Abort(const char* msg) {
   // We want to pass the msg string like a smi to avoid GC
   // problems, however msg is not guaranteed to be aligned
   // properly. Instead, we pass an aligned pointer that is
   // a proper v8 smi, but also pass the alignment difference
   // from the real pointer as a smi.
   intptr_t p1 = reinterpret_cast<intptr_t>(msg);
@@ skipping 533 matching lines @@
   push(rcx);
 
   // Clear the top frame.
   ExternalReference c_entry_fp_address(Top::k_c_entry_fp_address);
   movq(kScratchRegister, c_entry_fp_address);
   movq(Operand(kScratchRegister, 0), Immediate(0));
 }
 
 
 } }  // namespace v8::internal