1 /* 2 * Copyright (C) 2014 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_MIPS64_CONSTANTS_MIPS64_H_ 18 #define ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_ 19 20 #include <iosfwd> 21 22 #include <android-base/logging.h> 23 24 #include "arch/mips64/registers_mips64.h" 25 #include "base/macros.h" 26 #include "globals.h" 27 28 namespace art { 29 namespace mips64 { 30 31 // Constants used for the decoding or encoding of the individual fields of instructions. 32 enum InstructionFields { 33 kOpcodeShift = 26, 34 kOpcodeBits = 6, 35 kRsShift = 21, 36 kRsBits = 5, 37 kRtShift = 16, 38 kRtBits = 5, 39 kRdShift = 11, 40 kRdBits = 5, 41 kShamtShift = 6, 42 kShamtBits = 5, 43 kFunctShift = 0, 44 kFunctBits = 6, 45 46 kFmtShift = 21, 47 kFmtBits = 5, 48 kFtShift = 16, 49 kFtBits = 5, 50 kFsShift = 11, 51 kFsBits = 5, 52 kFdShift = 6, 53 kFdBits = 5, 54 55 kMsaOperationShift = 23, 56 kMsaELMOperationShift = 22, 57 kMsa2ROperationShift = 18, 58 kMsa2RFOperationShift = 17, 59 kDfShift = 21, 60 kDfMShift = 16, 61 kDf2RShift = 16, 62 kDfNShift = 16, 63 kWtShift = 16, 64 kWtBits = 5, 65 kWsShift = 11, 66 kWsBits = 5, 67 kWdShift = 6, 68 kWdBits = 5, 69 kS10Shift = 16, 70 kI10Shift = 11, 71 kS10MinorShift = 2, 72 73 kBranchOffsetMask = 0x0000ffff, 74 kJumpOffsetMask = 0x03ffffff, 75 kMsaMajorOpcode = 0x1e, 76 kMsaDfMByteMask = 0x70, 77 kMsaDfMHalfwordMask = 0x60, 78 kMsaDfMWordMask = 0x40, 79 kMsaDfMDoublewordMask = 0x00, 80 kMsaDfNByteMask = 0x00, 81 kMsaDfNHalfwordMask = 0x20, 82 kMsaDfNWordMask = 0x30, 83 kMsaDfNDoublewordMask = 0x38, 84 kMsaS10Mask = 0x3ff, 85 }; 86 87 enum ScaleFactor { 88 TIMES_1 = 0, 89 TIMES_2 = 1, 90 TIMES_4 = 2, 91 TIMES_8 = 3 92 }; 93 94 class Instr { 95 public: 96 static const uint32_t kBreakPointInstruction = 0x0000000D; 97 98 bool IsBreakPoint() { 99 return ((*reinterpret_cast<const uint32_t*>(this)) & 0xFC00003F) == kBreakPointInstruction; 100 } 101 102 // Instructions are read out of a code stream. The only way to get a 103 // reference to an instruction is to convert a pointer. There is no way 104 // to allocate or create instances of class Instr. 105 // Use the At(pc) function to create references to Instr. 106 static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); } 107 108 private: 109 DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); 110 }; 111 112 } // namespace mips64 113 } // namespace art 114 115 #endif // ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_ 116
