Add 64-bit stubs to call into the runtime and to call native functions.

runtime/vm/stub_code_x64_test.cc

Index: runtime/vm/stub_code_x64_test.cc
===================================================================
--- runtime/vm/stub_code_x64_test.cc	(revision 0)
+++ runtime/vm/stub_code_x64_test.cc	(revision 0)
@@ -0,0 +1,111 @@
+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include "vm/globals.h"
+#if defined(TARGET_ARCH_X64)
+
+#include "vm/isolate.h"
+#include "vm/dart_entry.h"
+#include "vm/native_entry.h"
+#include "vm/native_entry_test.h"
+#include "vm/object.h"
+#include "vm/runtime_entry.h"
+#include "vm/stub_code.h"
+#include "vm/unit_test.h"
+
+#define __ assembler->
+
+namespace dart {
+
+DECLARE_RUNTIME_ENTRY(TestSmiSub);
+
+
+// Test calls to stub code which calls into the runtime.
+static void GenerateCallToCallRuntimeStub(Assembler* assembler,
+                                          int value1, int value2) {
+  const int argc = 2;
+  const Smi& smi1 = Smi::ZoneHandle(Smi::New(value1));
+  const Smi& smi2 = Smi::ZoneHandle(Smi::New(value2));
+  const Object& result = Object::ZoneHandle();
+  const Context& context = Context::ZoneHandle(Context::New(0));
+  ASSERT(context.isolate() == Isolate::Current());
+  __ enter(Immediate(0));
+  __ LoadObject(CTX, context);
+  __ PushObject(result);  // Push Null object for return value.
+  __ PushObject(smi1);  // Push argument 1 smi1.
+  __ PushObject(smi2);  // Push argument 2 smi2.
+  ASSERT(kTestSmiSubRuntimeEntry.argument_count() == argc);
+  __ CallRuntimeFromStub(kTestSmiSubRuntimeEntry);  // Call SmiSub runtime func.
+  __ AddImmediate(RSP, Immediate(argc * kWordSize));
+  __ popq(RAX);  // Pop return value from return slot.
+  __ leave();
+  __ ret();
+}
+
+
+TEST_CASE(CallRuntimeStubCode) {
+  const int value1 = 10;
+  const int value2 = 20;
+  const char* kName = "Test_CallRuntimeStubCode";
+  Assembler _assembler_;
+  GenerateCallToCallRuntimeStub(&_assembler_, value1, value2);
+  const Code& code = Code::Handle(
+      Code::FinalizeCode("Test_CallRuntimeStubCode", &_assembler_));
+  const Function& function = RuntimeEntry::RegisterFakeFunction(kName, code);
+  GrowableArray<const Object*>  arguments;
+  const Array& kNoArgumentNames = Array::Handle();
+  Smi& result = Smi::Handle();
+  result ^= DartEntry::InvokeStatic(function, arguments, kNoArgumentNames);
+  EXPECT_EQ((value1 - value2), result.Value());
+}
+
+
+// Test calls to stub code which calls a native C function.
+static void GenerateCallToCallNativeCFunctionStub(Assembler* assembler,
+                                                  int value1, int value2) {
+  const int argc = 2;
+  const Smi& smi1 = Smi::ZoneHandle(Smi::New(value1));
+  const Smi& smi2 = Smi::ZoneHandle(Smi::New(value2));
+  const Object& result = Object::ZoneHandle();
+  const String& native_name = String::ZoneHandle(String::New("TestSmiSub"));
+  Dart_NativeFunction native_function =
+      NativeTestEntry_Lookup(native_name, argc);
+  const Context& context = Context::ZoneHandle(Context::New(0));
+  ASSERT(context.isolate() == Isolate::Current());
+  __ enter(Immediate(0));
+  __ LoadObject(CTX, context);
+  __ PushObject(smi1);  // Push argument 1 smi1.
+  __ PushObject(smi2);  // Push argument 2 smi2.
+  __ PushObject(result);  // Push Null object for return value.
+  // Pass a pointer to the first argument in RAX.
+  __ leaq(RAX, Address(RSP, 2 * kWordSize));
+  __ movq(RBX, Immediate(reinterpret_cast<uword>(native_function)));
+  __ movq(R10, Immediate(argc));
+  __ call(&StubCode::CallNativeCFunctionLabel());
+  __ popq(RAX);  // Pop return value from return slot.
+  __ AddImmediate(RSP, Immediate(argc * kWordSize));
+  __ leave();
+  __ ret();
+}
+
+
+TEST_CASE(CallNativeCFunctionStubCode) {
+  const int value1 = 15;
+  const int value2 = 20;
+  const char* kName = "Test_CallNativeCFunctionStubCode";
+  Assembler _assembler_;
+  GenerateCallToCallNativeCFunctionStub(&_assembler_, value1, value2);
+  const Code& code = Code::Handle(
+      Code::FinalizeCode(kName, &_assembler_));
+  const Function& function = RuntimeEntry::RegisterFakeFunction(kName, code);
+  GrowableArray<const Object*>  arguments;
+  const Array& kNoArgumentNames = Array::Handle();
+  Smi& result = Smi::Handle();
+  result ^= DartEntry::InvokeStatic(function, arguments, kNoArgumentNames);
+  EXPECT_EQ((value1 - value2), result.Value());
+}
+
+}  // namespace dart
+
+#endif  // defined TARGET_ARCH_X64