| // 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. |
| |
| |
| 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). |
| CcTest::InitializeVM(); |
| v8::HandleScope scope(CcTest::isolate()); |
| Assembler assm(Isolate::Current(), NULL, 0); |
| |
| Label target; |
| __ j(equal, &target); |
| __ j(not_equal, &target); |
| __ bind(&target); |
| __ nop(); |
| } |
| |
| |
| TEST(AssemblerMultiByteNop) { |
| CcTest::InitializeVM(); |
| v8::HandleScope scope(CcTest::isolate()); |
| v8::internal::byte buffer[1024]; |
| Isolate* isolate = Isolate::Current(); |
| Assembler assm(isolate, 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(isolate->heap()->CreateCode( |
| desc, |
| Code::ComputeFlags(Code::STUB), |
| v8::internal::Handle<Code>())->ToObjectChecked()); |
| CHECK(code->IsCode()); |
| |
| F0 f = FUNCTION_CAST<F0>(code->entry()); |
| int res = f(); |
| CHECK_EQ(42, res); |
| } |
| |
| |
| |
| |
| #undef __ |