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// Copyright (c) 2012, 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/assembler.h"
#include "vm/instructions.h"
#include "vm/stub_code.h"
#include "vm/unit_test.h"
namespace dart {
#define __ assembler->
ASSEMBLER_TEST_GENERATE(Call, assembler) {
StubCode* stub_code = Isolate::Current()->stub_code();
__ call(&stub_code->InvokeDartCodeLabel());
__ ret();
}
static intptr_t prologue_code_size = -1;
ASSEMBLER_TEST_GENERATE(Jump, assembler) {
ASSERT(assembler->CodeSize() == 0);
__ pushq(PP);
__ LoadPoolPointer(PP);
prologue_code_size = assembler->CodeSize();
StubCode* stub_code = Isolate::Current()->stub_code();
__ JmpPatchable(&stub_code->InvokeDartCodeLabel(), PP);
const Code& array_stub = Code::Handle(stub_code->GetAllocateArrayStub());
const ExternalLabel array_label(array_stub.EntryPoint());
__ JmpPatchable(&array_label, PP);
__ popq(PP);
__ ret();
}
ASSEMBLER_TEST_RUN(Jump, test) {
ASSERT(prologue_code_size != -1);
const Code& code = test->code();
const Instructions& instrs = Instructions::Handle(code.instructions());
StubCode* stub_code = Isolate::Current()->stub_code();
bool status =
VirtualMemory::Protect(reinterpret_cast<void*>(instrs.EntryPoint()),
instrs.size(),
VirtualMemory::kReadWrite);
EXPECT(status);
JumpPattern jump1(test->entry() + prologue_code_size, test->code());
jump1.IsValid();
EXPECT_EQ(stub_code->InvokeDartCodeLabel().address(),
jump1.TargetAddress());
JumpPattern jump2((test->entry() +
jump1.pattern_length_in_bytes() + prologue_code_size),
test->code());
const Code& array_stub = Code::Handle(stub_code->GetAllocateArrayStub());
EXPECT_EQ(array_stub.EntryPoint(), jump2.TargetAddress());
uword target1 = jump1.TargetAddress();
uword target2 = jump2.TargetAddress();
jump1.SetTargetAddress(target2);
jump2.SetTargetAddress(target1);
EXPECT_EQ(array_stub.EntryPoint(), jump1.TargetAddress());
EXPECT_EQ(stub_code->InvokeDartCodeLabel().address(),
jump2.TargetAddress());
}
} // namespace dart
#endif // defined TARGET_ARCH_X64