1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ART_COMPILER_UTILS_X86_CONSTANTS_X86_H_ 18 #define ART_COMPILER_UTILS_X86_CONSTANTS_X86_H_ 19 20 #include <iosfwd> 21 22 #include <android-base/logging.h> 23 24 #include "arch/x86/registers_x86.h" 25 #include "base/macros.h" 26 #include "globals.h" 27 28 namespace art { 29 namespace x86 { 30 31 enum ByteRegister { 32 AL = 0, 33 CL = 1, 34 DL = 2, 35 BL = 3, 36 AH = 4, 37 CH = 5, 38 DH = 6, 39 BH = 7, 40 kNoByteRegister = -1 // Signals an illegal register. 41 }; 42 43 44 enum XmmRegister { 45 XMM0 = 0, 46 XMM1 = 1, 47 XMM2 = 2, 48 XMM3 = 3, 49 XMM4 = 4, 50 XMM5 = 5, 51 XMM6 = 6, 52 XMM7 = 7, 53 kNumberOfXmmRegisters = 8, 54 kNoXmmRegister = -1 // Signals an illegal register. 55 }; 56 std::ostream& operator<<(std::ostream& os, const XmmRegister& reg); 57 58 enum X87Register { 59 ST0 = 0, 60 ST1 = 1, 61 ST2 = 2, 62 ST3 = 3, 63 ST4 = 4, 64 ST5 = 5, 65 ST6 = 6, 66 ST7 = 7, 67 kNumberOfX87Registers = 8, 68 kNoX87Register = -1 // Signals an illegal register. 69 }; 70 std::ostream& operator<<(std::ostream& os, const X87Register& reg); 71 72 enum ScaleFactor { 73 TIMES_1 = 0, 74 TIMES_2 = 1, 75 TIMES_4 = 2, 76 TIMES_8 = 3 77 }; 78 79 enum Condition { 80 kOverflow = 0, 81 kNoOverflow = 1, 82 kBelow = 2, 83 kAboveEqual = 3, 84 kEqual = 4, 85 kNotEqual = 5, 86 kBelowEqual = 6, 87 kAbove = 7, 88 kSign = 8, 89 kNotSign = 9, 90 kParityEven = 10, 91 kParityOdd = 11, 92 kLess = 12, 93 kGreaterEqual = 13, 94 kLessEqual = 14, 95 kGreater = 15, 96 97 kZero = kEqual, 98 kNotZero = kNotEqual, 99 kNegative = kSign, 100 kPositive = kNotSign, 101 kCarrySet = kBelow, 102 kCarryClear = kAboveEqual, 103 kUnordered = kParityEven 104 }; 105 106 107 class Instr { 108 public: 109 static const uint8_t kHltInstruction = 0xF4; 110 // We prefer not to use the int3 instruction since it conflicts with gdb. 111 static const uint8_t kBreakPointInstruction = kHltInstruction; 112 IsBreakPoint()113 bool IsBreakPoint() { 114 return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction; 115 } 116 117 // Instructions are read out of a code stream. The only way to get a 118 // reference to an instruction is to convert a pointer. There is no way 119 // to allocate or create instances of class Instr. 120 // Use the At(pc) function to create references to Instr. At(uintptr_t pc)121 static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); } 122 123 private: 124 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); 125 }; 126 127 } // namespace x86 128 } // namespace art 129 130 #endif // ART_COMPILER_UTILS_X86_CONSTANTS_X86_H_ 131