/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_ #define ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_ #include <iosfwd> #include "arch/mips64/registers_mips64.h" #include "base/logging.h" #include "base/macros.h" #include "globals.h" namespace art { namespace mips64 { // Constants used for the decoding or encoding of the individual fields of instructions. enum InstructionFields { kOpcodeShift = 26, kOpcodeBits = 6, kRsShift = 21, kRsBits = 5, kRtShift = 16, kRtBits = 5, kRdShift = 11, kRdBits = 5, kShamtShift = 6, kShamtBits = 5, kFunctShift = 0, kFunctBits = 6, kFmtShift = 21, kFmtBits = 5, kFtShift = 16, kFtBits = 5, kFsShift = 11, kFsBits = 5, kFdShift = 6, kFdBits = 5, kBranchOffsetMask = 0x0000ffff, kJumpOffsetMask = 0x03ffffff, }; enum ScaleFactor { TIMES_1 = 0, TIMES_2 = 1, TIMES_4 = 2, TIMES_8 = 3 }; class Instr { public: static const uint32_t kBreakPointInstruction = 0x0000000D; bool IsBreakPoint() { return ((*reinterpret_cast<const uint32_t*>(this)) & 0xFC00003F) == kBreakPointInstruction; } // Instructions are read out of a code stream. The only way to get a // reference to an instruction is to convert a pointer. There is no way // to allocate or create instances of class Instr. // Use the At(pc) function to create references to Instr. static Instr* At(uintptr_t pc) { return reinterpret_cast<Instr*>(pc); } private: DISALLOW_IMPLICIT_CONSTRUCTORS(Instr); }; } // namespace mips64 } // namespace art #endif // ART_COMPILER_UTILS_MIPS64_CONSTANTS_MIPS64_H_