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DEFINITIONS
This source file includes following definitions.
- InitializeVM
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
// 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
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <stdlib.h>
#include "v8.h"
#include "macro-assembler.h"
#include "factory.h"
#include "platform.h"
#include "serialize.h"
#include "cctest.h"
using v8::internal::Assembler;
using v8::internal::Code;
using v8::internal::CodeDesc;
using v8::internal::FUNCTION_CAST;
using v8::internal::Immediate;
using v8::internal::Isolate;
using v8::internal::Label;
using v8::internal::OS;
using v8::internal::Operand;
using v8::internal::byte;
using v8::internal::greater;
using v8::internal::less_equal;
using v8::internal::equal;
using v8::internal::not_equal;
using v8::internal::r13;
using v8::internal::r15;
using v8::internal::r8;
using v8::internal::r9;
using v8::internal::rax;
using v8::internal::rbx;
using v8::internal::rbp;
using v8::internal::rcx;
using v8::internal::rdi;
using v8::internal::rdx;
using v8::internal::rsi;
using v8::internal::rsp;
using v8::internal::times_1;
// Test the x64 assembler by compiling some simple functions into
// a buffer and executing them. These tests do not initialize the
// V8 library, create a context, or use any V8 objects.
// The AMD64 calling convention is used, with the first six arguments
// in RDI, RSI, RDX, RCX, R8, and R9, and floating point arguments in
// the XMM registers. The return value is in RAX.
// This calling convention is used on Linux, with GCC, and on Mac OS,
// with GCC. A different convention is used on 64-bit windows,
// where the first four integer arguments are passed in RCX, RDX, R8 and R9.
typedef int (*F0)();
typedef int (*F1)(int64_t x);
typedef int (*F2)(int64_t x, int64_t y);
#ifdef _WIN64
static const v8::internal::Register arg1 = rcx;
static const v8::internal::Register arg2 = rdx;
#else
static const v8::internal::Register arg1 = rdi;
static const v8::internal::Register arg2 = rsi;
#endif
#define __ assm.
static v8::Persistent<v8::Context> env;
static void InitializeVM() {
if (env.IsEmpty()) {
env = v8::Context::New();
}
}
TEST(AssemblerX64ReturnOperation) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that copies argument 2 and returns it.
__ movq(rax, arg2);
__ nop();
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(2, result);
}
TEST(AssemblerX64StackOperations) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that copies argument 2 and returns it.
// We compile without stack frame pointers, so the gdb debugger shows
// incorrect stack frames when debugging this function (which has them).
__ push(rbp);
__ movq(rbp, rsp);
__ push(arg2); // Value at (rbp - 8)
__ push(arg2); // Value at (rbp - 16)
__ push(arg1); // Value at (rbp - 24)
__ pop(rax);
__ pop(rax);
__ pop(rax);
__ pop(rbp);
__ nop();
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(2, result);
}
TEST(AssemblerX64ArithmeticOperations) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that adds arguments returning the sum.
__ movq(rax, arg2);
__ addq(rax, arg1);
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(5, result);
}
TEST(AssemblerX64ImulOperation) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that multiplies arguments returning the high
// word.
__ movq(rax, arg2);
__ imul(arg1);
__ movq(rax, rdx);
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(0, result);
result = FUNCTION_CAST<F2>(buffer)(0x100000000l, 0x100000000l);
CHECK_EQ(1, result);
result = FUNCTION_CAST<F2>(buffer)(-0x100000000l, 0x100000000l);
CHECK_EQ(-1, result);
}
TEST(AssemblerX64MemoryOperands) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that copies argument 2 and returns it.
__ push(rbp);
__ movq(rbp, rsp);
__ push(arg2); // Value at (rbp - 8)
__ push(arg2); // Value at (rbp - 16)
__ push(arg1); // Value at (rbp - 24)
const int kStackElementSize = 8;
__ movq(rax, Operand(rbp, -3 * kStackElementSize));
__ pop(arg2);
__ pop(arg2);
__ pop(arg2);
__ pop(rbp);
__ nop();
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(3, result);
}
TEST(AssemblerX64ControlFlow) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble a simple function that copies argument 1 and returns it.
__ push(rbp);
__ movq(rbp, rsp);
__ movq(rax, arg1);
Label target;
__ jmp(&target);
__ movq(rax, arg2);
__ bind(&target);
__ pop(rbp);
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F2>(buffer)(3, 2);
CHECK_EQ(3, result);
}
TEST(AssemblerX64LoopImmediates) {
OS::SetUp();
// Allocate an executable page of memory.
size_t actual_size;
byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
&actual_size,
true));
CHECK(buffer);
Assembler assm(Isolate::Current(), buffer, static_cast<int>(actual_size));
// Assemble two loops using rax as counter, and verify the ending counts.
Label Fail;
__ movq(rax, Immediate(-3));
Label Loop1_test;
Label Loop1_body;
__ jmp(&Loop1_test);
__ bind(&Loop1_body);
__ addq(rax, Immediate(7));
__ bind(&Loop1_test);
__ cmpq(rax, Immediate(20));
__ j(less_equal, &Loop1_body);
// Did the loop terminate with the expected value?
__ cmpq(rax, Immediate(25));
__ j(not_equal, &Fail);
Label Loop2_test;
Label Loop2_body;
__ movq(rax, Immediate(0x11FEED00));
__ jmp(&Loop2_test);
__ bind(&Loop2_body);
__ addq(rax, Immediate(-0x1100));
__ bind(&Loop2_test);
__ cmpq(rax, Immediate(0x11FE8000));
__ j(greater, &Loop2_body);
// Did the loop terminate with the expected value?
__ cmpq(rax, Immediate(0x11FE7600));
__ j(not_equal, &Fail);
__ movq(rax, Immediate(1));
__ ret(0);
__ bind(&Fail);
__ movq(rax, Immediate(0));
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
// Call the function from C++.
int result = FUNCTION_CAST<F0>(buffer)();
CHECK_EQ(1, result);
}
TEST(OperandRegisterDependency) {
int offsets[4] = {0, 1, 0xfed, 0xbeefcad};
for (int i = 0; i < 4; i++) {
int offset = offsets[i];
CHECK(Operand(rax, offset).AddressUsesRegister(rax));
CHECK(!Operand(rax, offset).AddressUsesRegister(r8));
CHECK(!Operand(rax, offset).AddressUsesRegister(rcx));
CHECK(Operand(rax, rax, times_1, offset).AddressUsesRegister(rax));
CHECK(!Operand(rax, rax, times_1, offset).AddressUsesRegister(r8));
CHECK(!Operand(rax, rax, times_1, offset).AddressUsesRegister(rcx));
CHECK(Operand(rax, rcx, times_1, offset).AddressUsesRegister(rax));
CHECK(Operand(rax, rcx, times_1, offset).AddressUsesRegister(rcx));
CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(r8));
CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(r9));
CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(rdx));
CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(rsp));
CHECK(Operand(rsp, offset).AddressUsesRegister(rsp));
CHECK(!Operand(rsp, offset).AddressUsesRegister(rax));
CHECK(!Operand(rsp, offset).AddressUsesRegister(r15));
CHECK(Operand(rbp, offset).AddressUsesRegister(rbp));
CHECK(!Operand(rbp, offset).AddressUsesRegister(rax));
CHECK(!Operand(rbp, offset).AddressUsesRegister(r13));
CHECK(Operand(rbp, rax, times_1, offset).AddressUsesRegister(rbp));
CHECK(Operand(rbp, rax, times_1, offset).AddressUsesRegister(rax));
CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(rcx));
CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(r13));
CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(r8));
CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(rsp));
CHECK(Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rsp));
CHECK(Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rbp));
CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rax));
CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(r15));
CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(r13));
}
}
TEST(AssemblerX64LabelChaining) {
// Test chaining of label usages within instructions (issue 1644).
v8::HandleScope scope;
Assembler assm(Isolate::Current(), NULL, 0);
Label target;
__ j(equal, &target);
__ j(not_equal, &target);
__ bind(&target);
__ nop();
}
TEST(AssemblerMultiByteNop) {
InitializeVM();
v8::HandleScope scope;
v8::internal::byte buffer[1024];
Assembler assm(Isolate::Current(), buffer, sizeof(buffer));
__ push(rbx);
__ push(rcx);
__ push(rdx);
__ push(rdi);
__ push(rsi);
__ movq(rax, Immediate(1));
__ movq(rbx, Immediate(2));
__ movq(rcx, Immediate(3));
__ movq(rdx, Immediate(4));
__ movq(rdi, Immediate(5));
__ movq(rsi, Immediate(6));
for (int i = 0; i < 16; i++) {
int before = assm.pc_offset();
__ Nop(i);
CHECK_EQ(assm.pc_offset() - before, i);
}
Label fail;
__ cmpq(rax, Immediate(1));
__ j(not_equal, &fail);
__ cmpq(rbx, Immediate(2));
__ j(not_equal, &fail);
__ cmpq(rcx, Immediate(3));
__ j(not_equal, &fail);
__ cmpq(rdx, Immediate(4));
__ j(not_equal, &fail);
__ cmpq(rdi, Immediate(5));
__ j(not_equal, &fail);
__ cmpq(rsi, Immediate(6));
__ j(not_equal, &fail);
__ movq(rax, Immediate(42));
__ pop(rsi);
__ pop(rdi);
__ pop(rdx);
__ pop(rcx);
__ pop(rbx);
__ ret(0);
__ bind(&fail);
__ movq(rax, Immediate(13));
__ pop(rsi);
__ pop(rdi);
__ pop(rdx);
__ pop(rcx);
__ pop(rbx);
__ ret(0);
CodeDesc desc;
assm.GetCode(&desc);
Code* code = Code::cast(HEAP->CreateCode(
desc,
Code::ComputeFlags(Code::STUB),
v8::internal::Handle<v8::internal::Object>(
HEAP->undefined_value()))->ToObjectChecked());
CHECK(code->IsCode());
F0 f = FUNCTION_CAST<F0>(code->entry());
int res = f();
CHECK_EQ(42, res);
}
#undef __