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 "arch/x86/registers_x86.h" 23 #include "base/logging.h" 24 #include "base/macros.h" 25 #include "globals.h" 26 27 namespace art { 28 namespace x86 { 29 30 enum ByteRegister { 31 AL = 0, 32 CL = 1, 33 DL = 2, 34 BL = 3, 35 AH = 4, 36 CH = 5, 37 DH = 6, 38 BH = 7, 39 kNoByteRegister = -1 // Signals an illegal register. 40 }; 41 42 43 enum XmmRegister { 44 XMM0 = 0, 45 XMM1 = 1, 46 XMM2 = 2, 47 XMM3 = 3, 48 XMM4 = 4, 49 XMM5 = 5, 50 XMM6 = 6, 51 XMM7 = 7, 52 kNumberOfXmmRegisters = 8, 53 kNoXmmRegister = -1 // Signals an illegal register. 54 }; 55 std::ostream& operator<<(std::ostream& os, const XmmRegister& reg); 56 57 enum X87Register { 58 ST0 = 0, 59 ST1 = 1, 60 ST2 = 2, 61 ST3 = 3, 62 ST4 = 4, 63 ST5 = 5, 64 ST6 = 6, 65 ST7 = 7, 66 kNumberOfX87Registers = 8, 67 kNoX87Register = -1 // Signals an illegal register. 68 }; 69 std::ostream& operator<<(std::ostream& os, const X87Register& reg); 70 71 enum ScaleFactor { 72 TIMES_1 = 0, 73 TIMES_2 = 1, 74 TIMES_4 = 2, 75 TIMES_8 = 3 76 }; 77 78 enum Condition { 79 kOverflow = 0, 80 kNoOverflow = 1, 81 kBelow = 2, 82 kAboveEqual = 3, 83 kEqual = 4, 84 kNotEqual = 5, 85 kBelowEqual = 6, 86 kAbove = 7, 87 kSign = 8, 88 kNotSign = 9, 89 kParityEven = 10, 90 kParityOdd = 11, 91 kLess = 12, 92 kGreaterEqual = 13, 93 kLessEqual = 14, 94 kGreater = 15, 95 96 kZero = kEqual, 97 kNotZero = kNotEqual, 98 kNegative = kSign, 99 kPositive = kNotSign, 100 kUnordered = kParityEven 101 }; 102 103 104 class Instr { 105 public: 106 static const uint8_t kHltInstruction = 0xF4; 107 // We prefer not to use the int3 instruction since it conflicts with gdb. 108 static const uint8_t kBreakPointInstruction = kHltInstruction; 109 IsBreakPoint()110 bool IsBreakPoint() { 111 return (*reinterpret_cast<const uint8_t*>(this)) == kBreakPointInstruction; 112 } 113 114 // Instructions are read out of a code stream. The only way to get a 115 // reference to an instruction is to convert a pointer. There is no way 116 // to allocate or create instances of class Instr. 117 // Use the At(pc) function to create references to Instr. At(uintptr_t pc)118 static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); } 119 120 private: 121 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); 122 }; 123 124 } // namespace x86 125 } // namespace art 126 127 #endif // ART_COMPILER_UTILS_X86_CONSTANTS_X86_H_ 128