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143 lines
3.5 KiB
143 lines
3.5 KiB
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
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#define ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
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#include <iosfwd>
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#include <android-base/logging.h>
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#include "arch/x86_64/registers_x86_64.h"
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#include "base/globals.h"
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#include "base/macros.h"
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namespace art {
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namespace x86_64 {
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class CpuRegister {
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public:
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explicit constexpr CpuRegister(Register r) : reg_(r) {}
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explicit constexpr CpuRegister(int r) : reg_(Register(r)) {}
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constexpr Register AsRegister() const {
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return reg_;
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}
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constexpr uint8_t LowBits() const {
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return reg_ & 7;
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}
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constexpr bool NeedsRex() const {
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return reg_ > 7;
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}
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private:
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const Register reg_;
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};
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std::ostream& operator<<(std::ostream& os, const CpuRegister& reg);
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class XmmRegister {
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public:
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explicit constexpr XmmRegister(FloatRegister r) : reg_(r) {}
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explicit constexpr XmmRegister(int r) : reg_(FloatRegister(r)) {}
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constexpr FloatRegister AsFloatRegister() const {
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return reg_;
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}
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constexpr uint8_t LowBits() const {
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return reg_ & 7;
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}
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constexpr bool NeedsRex() const {
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return reg_ > 7;
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}
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bool operator==(XmmRegister& other) {
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return reg_ == other.reg_;
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}
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private:
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const FloatRegister reg_;
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};
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std::ostream& operator<<(std::ostream& os, const XmmRegister& reg);
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enum X87Register {
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ST0 = 0,
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ST1 = 1,
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ST2 = 2,
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ST3 = 3,
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ST4 = 4,
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ST5 = 5,
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ST6 = 6,
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ST7 = 7,
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kNumberOfX87Registers = 8,
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kNoX87Register = -1 // Signals an illegal register.
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};
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std::ostream& operator<<(std::ostream& os, const X87Register& reg);
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enum ScaleFactor {
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TIMES_1 = 0,
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TIMES_2 = 1,
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TIMES_4 = 2,
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TIMES_8 = 3
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};
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enum Condition {
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kOverflow = 0,
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kNoOverflow = 1,
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kBelow = 2,
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kAboveEqual = 3,
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kEqual = 4,
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kNotEqual = 5,
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kBelowEqual = 6,
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kAbove = 7,
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kSign = 8,
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kNotSign = 9,
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kParityEven = 10,
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kParityOdd = 11,
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kLess = 12,
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kGreaterEqual = 13,
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kLessEqual = 14,
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kGreater = 15,
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kZero = kEqual,
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kNotZero = kNotEqual,
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kNegative = kSign,
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kPositive = kNotSign,
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kCarrySet = kBelow,
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kCarryClear = kAboveEqual,
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kUnordered = kParityEven
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};
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class Instr {
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public:
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static const uint8_t kHltInstruction = 0xF4;
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// We prefer not to use the int3 instruction since it conflicts with gdb.
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static const uint8_t kBreakPointInstruction = kHltInstruction;
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bool IsBreakPoint() {
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return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction;
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}
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// Instructions are read out of a code stream. The only way to get a
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// reference to an instruction is to convert a pointer. There is no way
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// to allocate or create instances of class Instr.
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// Use the At(pc) function to create references to Instr.
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static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); }
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private:
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DISALLOW_IMPLICIT_CONSTRUCTORS(Instr);
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};
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} // namespace x86_64
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} // namespace art
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#endif // ART_COMPILER_UTILS_X86_64_CONSTANTS_X86_64_H_
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