registers.hh revision 13556
1/* 2 * Copyright (c) 2006 The Regents of The University of Michigan 3 * Copyright (c) 2007 MIPS Technologies, Inc. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer; 10 * redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution; 13 * neither the name of the copyright holders nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * Authors: Korey Sewell 30 */ 31 32#ifndef __ARCH_MIPS_REGISTERS_HH__ 33#define __ARCH_MIPS_REGISTERS_HH__ 34 35#include "arch/generic/vec_reg.hh" 36#include "arch/mips/generated/max_inst_regs.hh" 37#include "base/logging.hh" 38#include "base/types.hh" 39 40class ThreadContext; 41 42namespace MipsISA 43{ 44 45using MipsISAInst::MaxInstSrcRegs; 46using MipsISAInst::MaxInstDestRegs; 47using MipsISAInst::MaxMiscDestRegs; 48 49// Constants Related to the number of registers 50const int NumIntArchRegs = 32; 51const int NumIntSpecialRegs = 9; 52const int NumFloatArchRegs = 32; 53const int NumFloatSpecialRegs = 5; 54 55const int MaxShadowRegSets = 16; // Maximum number of shadow register sets 56const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs; //HI & LO Regs 57const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;// 58const int NumCCRegs = 0; 59 60const uint32_t MIPS32_QNAN = 0x7fbfffff; 61const uint64_t MIPS64_QNAN = ULL(0x7ff7ffffffffffff); 62 63enum FPControlRegNums { 64 FLOATREG_FIR = NumFloatArchRegs, 65 FLOATREG_FCCR, 66 FLOATREG_FEXR, 67 FLOATREG_FENR, 68 FLOATREG_FCSR 69}; 70 71enum FCSRBits { 72 Inexact = 1, 73 Underflow, 74 Overflow, 75 DivideByZero, 76 Invalid, 77 Unimplemented 78}; 79 80enum FCSRFields { 81 Flag_Field = 1, 82 Enable_Field = 6, 83 Cause_Field = 11 84}; 85 86enum MiscIntRegNums { 87 INTREG_LO = NumIntArchRegs, 88 INTREG_DSP_LO0 = INTREG_LO, 89 INTREG_HI, 90 INTREG_DSP_HI0 = INTREG_HI, 91 INTREG_DSP_ACX0, 92 INTREG_DSP_LO1, 93 INTREG_DSP_HI1, 94 INTREG_DSP_ACX1, 95 INTREG_DSP_LO2, 96 INTREG_DSP_HI2, 97 INTREG_DSP_ACX2, 98 INTREG_DSP_LO3, 99 INTREG_DSP_HI3, 100 INTREG_DSP_ACX3, 101 INTREG_DSP_CONTROL 102}; 103 104// semantically meaningful register indices 105const int ZeroReg = 0; 106const int AssemblerReg = 1; 107const int SyscallSuccessReg = 7; 108const int FirstArgumentReg = 4; 109const int ReturnValueReg = 2; 110 111const int KernelReg0 = 26; 112const int KernelReg1 = 27; 113const int GlobalPointerReg = 28; 114const int StackPointerReg = 29; 115const int FramePointerReg = 30; 116const int ReturnAddressReg = 31; 117 118const int SyscallPseudoReturnReg = 3; 119 120// Enumerate names for 'Control' Registers in the CPU 121// Reference MIPS32 Arch. for Programmers, Vol. III, Ch.8 122// (Register Number-Register Select) Summary of Register 123//------------------------------------------------------ 124// The first set of names classify the CP0 names as Register Banks 125// for easy indexing when using the 'RD + SEL' index combination 126// in CP0 instructions. 127enum MiscRegIndex{ 128 MISCREG_INDEX = 0, //Bank 0: 0 - 3 129 MISCREG_MVP_CONTROL, 130 MISCREG_MVP_CONF0, 131 MISCREG_MVP_CONF1, 132 133 MISCREG_CP0_RANDOM = 8, //Bank 1: 8 - 15 134 MISCREG_VPE_CONTROL, 135 MISCREG_VPE_CONF0, 136 MISCREG_VPE_CONF1, 137 MISCREG_YQMASK, 138 MISCREG_VPE_SCHEDULE, 139 MISCREG_VPE_SCHEFBACK, 140 MISCREG_VPE_OPT, 141 142 MISCREG_ENTRYLO0 = 16, //Bank 2: 16 - 23 143 MISCREG_TC_STATUS, 144 MISCREG_TC_BIND, 145 MISCREG_TC_RESTART, 146 MISCREG_TC_HALT, 147 MISCREG_TC_CONTEXT, 148 MISCREG_TC_SCHEDULE, 149 MISCREG_TC_SCHEFBACK, 150 151 MISCREG_ENTRYLO1 = 24, // Bank 3: 24 152 153 MISCREG_CONTEXT = 32, // Bank 4: 32 - 33 154 MISCREG_CONTEXT_CONFIG, 155 156 MISCREG_PAGEMASK = 40, //Bank 5: 40 - 41 157 MISCREG_PAGEGRAIN = 41, 158 159 MISCREG_WIRED = 48, //Bank 6:48-55 160 MISCREG_SRS_CONF0, 161 MISCREG_SRS_CONF1, 162 MISCREG_SRS_CONF2, 163 MISCREG_SRS_CONF3, 164 MISCREG_SRS_CONF4, 165 166 MISCREG_HWRENA = 56, //Bank 7: 56-63 167 168 MISCREG_BADVADDR = 64, //Bank 8: 64-71 169 170 MISCREG_COUNT = 72, //Bank 9: 72-79 171 172 MISCREG_ENTRYHI = 80, //Bank 10: 80-87 173 174 MISCREG_COMPARE = 88, //Bank 11: 88-95 175 176 MISCREG_STATUS = 96, //Bank 12: 96-103 177 MISCREG_INTCTL, 178 MISCREG_SRSCTL, 179 MISCREG_SRSMAP, 180 181 MISCREG_CAUSE = 104, //Bank 13: 104-111 182 183 MISCREG_EPC = 112, //Bank 14: 112-119 184 185 MISCREG_PRID = 120, //Bank 15: 120-127, 186 MISCREG_EBASE, 187 188 MISCREG_CONFIG = 128, //Bank 16: 128-135 189 MISCREG_CONFIG1, 190 MISCREG_CONFIG2, 191 MISCREG_CONFIG3, 192 MISCREG_CONFIG4, 193 MISCREG_CONFIG5, 194 MISCREG_CONFIG6, 195 MISCREG_CONFIG7, 196 197 198 MISCREG_LLADDR = 136, //Bank 17: 136-143 199 200 MISCREG_WATCHLO0 = 144, //Bank 18: 144-151 201 MISCREG_WATCHLO1, 202 MISCREG_WATCHLO2, 203 MISCREG_WATCHLO3, 204 MISCREG_WATCHLO4, 205 MISCREG_WATCHLO5, 206 MISCREG_WATCHLO6, 207 MISCREG_WATCHLO7, 208 209 MISCREG_WATCHHI0 = 152, //Bank 19: 152-159 210 MISCREG_WATCHHI1, 211 MISCREG_WATCHHI2, 212 MISCREG_WATCHHI3, 213 MISCREG_WATCHHI4, 214 MISCREG_WATCHHI5, 215 MISCREG_WATCHHI6, 216 MISCREG_WATCHHI7, 217 218 MISCREG_XCCONTEXT64 = 160, //Bank 20: 160-167 219 220 //Bank 21: 168-175 221 222 //Bank 22: 176-183 223 224 MISCREG_DEBUG = 184, //Bank 23: 184-191 225 MISCREG_TRACE_CONTROL1, 226 MISCREG_TRACE_CONTROL2, 227 MISCREG_USER_TRACE_DATA, 228 MISCREG_TRACE_BPC, 229 230 MISCREG_DEPC = 192, //Bank 24: 192-199 231 232 MISCREG_PERFCNT0 = 200, //Bank 25: 200-207 233 MISCREG_PERFCNT1, 234 MISCREG_PERFCNT2, 235 MISCREG_PERFCNT3, 236 MISCREG_PERFCNT4, 237 MISCREG_PERFCNT5, 238 MISCREG_PERFCNT6, 239 MISCREG_PERFCNT7, 240 241 MISCREG_ERRCTL = 208, //Bank 26: 208-215 242 243 MISCREG_CACHEERR0 = 216, //Bank 27: 216-223 244 MISCREG_CACHEERR1, 245 MISCREG_CACHEERR2, 246 MISCREG_CACHEERR3, 247 248 MISCREG_TAGLO0 = 224, //Bank 28: 224-231 249 MISCREG_DATALO1, 250 MISCREG_TAGLO2, 251 MISCREG_DATALO3, 252 MISCREG_TAGLO4, 253 MISCREG_DATALO5, 254 MISCREG_TAGLO6, 255 MISCREG_DATALO7, 256 257 MISCREG_TAGHI0 = 232, //Bank 29: 232-239 258 MISCREG_DATAHI1, 259 MISCREG_TAGHI2, 260 MISCREG_DATAHI3, 261 MISCREG_TAGHI4, 262 MISCREG_DATAHI5, 263 MISCREG_TAGHI6, 264 MISCREG_DATAHI7, 265 266 267 MISCREG_ERROR_EPC = 240, //Bank 30: 240-247 268 269 MISCREG_DESAVE = 248, //Bank 31: 248-256 270 271 MISCREG_LLFLAG = 257, 272 MISCREG_TP_VALUE, 273 274 MISCREG_NUMREGS 275}; 276 277const int NumMiscRegs = MISCREG_NUMREGS; 278 279const int TotalNumRegs = NumIntRegs + NumFloatRegs + NumMiscRegs; 280 281typedef RegVal IntReg; 282 283// floating point register file entry type 284typedef RegVal FloatRegBits; 285typedef FloatRegVal FloatReg; 286 287// cop-0/cop-1 system control register 288typedef RegVal MiscReg; 289 290// dummy typedef since we don't have CC regs 291typedef uint8_t CCReg; 292 293// dummy typedefs since we don't have vector regs 294constexpr unsigned NumVecElemPerVecReg = 2; 295using VecElem = uint32_t; 296using VecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, false>; 297using ConstVecReg = ::VecRegT<VecElem, NumVecElemPerVecReg, true>; 298using VecRegContainer = VecReg::Container; 299// This has to be one to prevent warnings that are treated as errors 300constexpr unsigned NumVecRegs = 1; 301 302} // namespace MipsISA 303 304#endif 305