d57a8b0a07
We never use the smi register in places where it matters that r12 as a base register needs an extra SIB byte. Might as well free up the unencumbered r15 register instead. Review URL: http://codereview.chromium.org/6647015 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7113 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
342 lines
12 KiB
C++
342 lines
12 KiB
C++
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include <stdlib.h>
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#include "v8.h"
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#include "macro-assembler.h"
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#include "factory.h"
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#include "platform.h"
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#include "serialize.h"
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#include "cctest.h"
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using v8::internal::byte;
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using v8::internal::OS;
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using v8::internal::Assembler;
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using v8::internal::Operand;
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using v8::internal::Immediate;
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using v8::internal::Label;
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using v8::internal::rax;
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using v8::internal::rsi;
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using v8::internal::rdi;
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using v8::internal::rcx;
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using v8::internal::rdx;
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using v8::internal::rbp;
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using v8::internal::rsp;
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using v8::internal::r8;
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using v8::internal::r9;
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using v8::internal::r13;
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using v8::internal::r15;
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using v8::internal::times_1;
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using v8::internal::FUNCTION_CAST;
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using v8::internal::CodeDesc;
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using v8::internal::less_equal;
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using v8::internal::not_equal;
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using v8::internal::greater;
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// Test the x64 assembler by compiling some simple functions into
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// a buffer and executing them. These tests do not initialize the
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// V8 library, create a context, or use any V8 objects.
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// The AMD64 calling convention is used, with the first six arguments
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// in RDI, RSI, RDX, RCX, R8, and R9, and floating point arguments in
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// the XMM registers. The return value is in RAX.
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// This calling convention is used on Linux, with GCC, and on Mac OS,
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// with GCC. A different convention is used on 64-bit windows,
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// where the first four integer arguments are passed in RCX, RDX, R8 and R9.
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typedef int (*F0)();
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typedef int (*F1)(int64_t x);
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typedef int (*F2)(int64_t x, int64_t y);
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#ifdef _WIN64
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static const v8::internal::Register arg1 = rcx;
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static const v8::internal::Register arg2 = rdx;
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#else
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static const v8::internal::Register arg1 = rdi;
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static const v8::internal::Register arg2 = rsi;
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#endif
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#define __ assm.
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TEST(AssemblerX64ReturnOperation) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that copies argument 2 and returns it.
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__ movq(rax, arg2);
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__ nop();
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(2, result);
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}
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TEST(AssemblerX64StackOperations) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that copies argument 2 and returns it.
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// We compile without stack frame pointers, so the gdb debugger shows
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// incorrect stack frames when debugging this function (which has them).
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__ push(rbp);
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__ movq(rbp, rsp);
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__ push(arg2); // Value at (rbp - 8)
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__ push(arg2); // Value at (rbp - 16)
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__ push(arg1); // Value at (rbp - 24)
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__ pop(rax);
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__ pop(rax);
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__ pop(rax);
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__ pop(rbp);
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__ nop();
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(2, result);
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}
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TEST(AssemblerX64ArithmeticOperations) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that adds arguments returning the sum.
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__ movq(rax, arg2);
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__ addq(rax, arg1);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(5, result);
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}
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TEST(AssemblerX64ImulOperation) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that multiplies arguments returning the high
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// word.
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__ movq(rax, arg2);
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__ imul(arg1);
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__ movq(rax, rdx);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(0, result);
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result = FUNCTION_CAST<F2>(buffer)(0x100000000l, 0x100000000l);
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CHECK_EQ(1, result);
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result = FUNCTION_CAST<F2>(buffer)(-0x100000000l, 0x100000000l);
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CHECK_EQ(-1, result);
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}
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TEST(AssemblerX64MemoryOperands) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that copies argument 2 and returns it.
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__ push(rbp);
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__ movq(rbp, rsp);
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__ push(arg2); // Value at (rbp - 8)
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__ push(arg2); // Value at (rbp - 16)
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__ push(arg1); // Value at (rbp - 24)
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const int kStackElementSize = 8;
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__ movq(rax, Operand(rbp, -3 * kStackElementSize));
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__ pop(arg2);
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__ pop(arg2);
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__ pop(arg2);
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__ pop(rbp);
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__ nop();
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(3, result);
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}
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TEST(AssemblerX64ControlFlow) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble a simple function that copies argument 1 and returns it.
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__ push(rbp);
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__ movq(rbp, rsp);
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__ movq(rax, arg1);
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Label target;
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__ jmp(&target);
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__ movq(rax, arg2);
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__ bind(&target);
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__ pop(rbp);
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F2>(buffer)(3, 2);
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CHECK_EQ(3, result);
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}
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TEST(AssemblerX64LoopImmediates) {
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// Allocate an executable page of memory.
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size_t actual_size;
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byte* buffer = static_cast<byte*>(OS::Allocate(Assembler::kMinimalBufferSize,
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&actual_size,
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true));
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CHECK(buffer);
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Assembler assm(buffer, static_cast<int>(actual_size));
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// Assemble two loops using rax as counter, and verify the ending counts.
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Label Fail;
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__ movq(rax, Immediate(-3));
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Label Loop1_test;
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Label Loop1_body;
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__ jmp(&Loop1_test);
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__ bind(&Loop1_body);
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__ addq(rax, Immediate(7));
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__ bind(&Loop1_test);
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__ cmpq(rax, Immediate(20));
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__ j(less_equal, &Loop1_body);
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// Did the loop terminate with the expected value?
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__ cmpq(rax, Immediate(25));
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__ j(not_equal, &Fail);
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Label Loop2_test;
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Label Loop2_body;
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__ movq(rax, Immediate(0x11FEED00));
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__ jmp(&Loop2_test);
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__ bind(&Loop2_body);
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__ addq(rax, Immediate(-0x1100));
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__ bind(&Loop2_test);
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__ cmpq(rax, Immediate(0x11FE8000));
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__ j(greater, &Loop2_body);
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// Did the loop terminate with the expected value?
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__ cmpq(rax, Immediate(0x11FE7600));
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__ j(not_equal, &Fail);
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__ movq(rax, Immediate(1));
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__ ret(0);
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__ bind(&Fail);
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__ movq(rax, Immediate(0));
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__ ret(0);
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CodeDesc desc;
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assm.GetCode(&desc);
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// Call the function from C++.
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int result = FUNCTION_CAST<F0>(buffer)();
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CHECK_EQ(1, result);
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}
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TEST(OperandRegisterDependency) {
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int offsets[4] = {0, 1, 0xfed, 0xbeefcad};
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for (int i = 0; i < 4; i++) {
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int offset = offsets[i];
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CHECK(Operand(rax, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rax, offset).AddressUsesRegister(r8));
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CHECK(!Operand(rax, offset).AddressUsesRegister(rcx));
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CHECK(Operand(rax, rax, times_1, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rax, rax, times_1, offset).AddressUsesRegister(r8));
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CHECK(!Operand(rax, rax, times_1, offset).AddressUsesRegister(rcx));
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CHECK(Operand(rax, rcx, times_1, offset).AddressUsesRegister(rax));
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CHECK(Operand(rax, rcx, times_1, offset).AddressUsesRegister(rcx));
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CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(r8));
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CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(r9));
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CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(rdx));
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CHECK(!Operand(rax, rcx, times_1, offset).AddressUsesRegister(rsp));
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CHECK(Operand(rsp, offset).AddressUsesRegister(rsp));
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CHECK(!Operand(rsp, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rsp, offset).AddressUsesRegister(r15));
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CHECK(Operand(rbp, offset).AddressUsesRegister(rbp));
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CHECK(!Operand(rbp, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rbp, offset).AddressUsesRegister(r13));
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CHECK(Operand(rbp, rax, times_1, offset).AddressUsesRegister(rbp));
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CHECK(Operand(rbp, rax, times_1, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(rcx));
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CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(r13));
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CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(r8));
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CHECK(!Operand(rbp, rax, times_1, offset).AddressUsesRegister(rsp));
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CHECK(Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rsp));
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CHECK(Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rbp));
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CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(rax));
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CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(r15));
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CHECK(!Operand(rsp, rbp, times_1, offset).AddressUsesRegister(r13));
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}
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}
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#undef __
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