2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * Copyright (c) 2007 MIPS Technologies, Inc.
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30 #ifndef __ARCH_MIPS_REGISTERS_HH__
31 #define __ARCH_MIPS_REGISTERS_HH__
33 #include "arch/generic/vec_pred_reg.hh"
34 #include "arch/generic/vec_reg.hh"
35 #include "arch/mips/generated/max_inst_regs.hh"
36 #include "base/logging.hh"
37 #include "base/types.hh"
44 using MipsISAInst::MaxInstSrcRegs;
45 using MipsISAInst::MaxInstDestRegs;
46 using MipsISAInst::MaxMiscDestRegs;
48 // Constants Related to the number of registers
49 const int NumIntArchRegs = 32;
50 const int NumIntSpecialRegs = 9;
51 const int NumFloatArchRegs = 32;
52 const int NumFloatSpecialRegs = 5;
54 const int MaxShadowRegSets = 16; // Maximum number of shadow register sets
55 const int NumIntRegs = NumIntArchRegs + NumIntSpecialRegs; //HI & LO Regs
56 const int NumFloatRegs = NumFloatArchRegs + NumFloatSpecialRegs;//
57 const int NumVecRegs = 1; // Not applicable to MIPS
58 // (1 to prevent warnings)
59 const int NumVecPredRegs = 1; // Not applicable to MIPS
60 // (1 to prevent warnings)
61 const int NumCCRegs = 0;
63 const uint32_t MIPS32_QNAN = 0x7fbfffff;
64 const uint64_t MIPS64_QNAN = ULL(0x7ff7ffffffffffff);
66 enum FPControlRegNums {
67 FLOATREG_FIR = NumFloatArchRegs,
90 INTREG_LO = NumIntArchRegs,
91 INTREG_DSP_LO0 = INTREG_LO,
93 INTREG_DSP_HI0 = INTREG_HI,
107 // semantically meaningful register indices
108 const int ZeroReg = 0;
109 const int AssemblerReg = 1;
110 const int SyscallSuccessReg = 7;
111 const int FirstArgumentReg = 4;
112 const int ReturnValueReg = 2;
114 const int KernelReg0 = 26;
115 const int KernelReg1 = 27;
116 const int GlobalPointerReg = 28;
117 const int StackPointerReg = 29;
118 const int FramePointerReg = 30;
119 const int ReturnAddressReg = 31;
121 const int SyscallPseudoReturnReg = 3;
123 // Enumerate names for 'Control' Registers in the CPU
124 // Reference MIPS32 Arch. for Programmers, Vol. III, Ch.8
125 // (Register Number-Register Select) Summary of Register
126 //------------------------------------------------------
127 // The first set of names classify the CP0 names as Register Banks
128 // for easy indexing when using the 'RD + SEL' index combination
129 // in CP0 instructions.
131 MISCREG_INDEX = 0, //Bank 0: 0 - 3
136 MISCREG_CP0_RANDOM = 8, //Bank 1: 8 - 15
141 MISCREG_VPE_SCHEDULE,
142 MISCREG_VPE_SCHEFBACK,
145 MISCREG_ENTRYLO0 = 16, //Bank 2: 16 - 23
152 MISCREG_TC_SCHEFBACK,
154 MISCREG_ENTRYLO1 = 24, // Bank 3: 24
156 MISCREG_CONTEXT = 32, // Bank 4: 32 - 33
157 MISCREG_CONTEXT_CONFIG,
159 MISCREG_PAGEMASK = 40, //Bank 5: 40 - 41
160 MISCREG_PAGEGRAIN = 41,
162 MISCREG_WIRED = 48, //Bank 6:48-55
169 MISCREG_HWRENA = 56, //Bank 7: 56-63
171 MISCREG_BADVADDR = 64, //Bank 8: 64-71
173 MISCREG_COUNT = 72, //Bank 9: 72-79
175 MISCREG_ENTRYHI = 80, //Bank 10: 80-87
177 MISCREG_COMPARE = 88, //Bank 11: 88-95
179 MISCREG_STATUS = 96, //Bank 12: 96-103
184 MISCREG_CAUSE = 104, //Bank 13: 104-111
186 MISCREG_EPC = 112, //Bank 14: 112-119
188 MISCREG_PRID = 120, //Bank 15: 120-127,
191 MISCREG_CONFIG = 128, //Bank 16: 128-135
201 MISCREG_LLADDR = 136, //Bank 17: 136-143
203 MISCREG_WATCHLO0 = 144, //Bank 18: 144-151
212 MISCREG_WATCHHI0 = 152, //Bank 19: 152-159
221 MISCREG_XCCONTEXT64 = 160, //Bank 20: 160-167
227 MISCREG_DEBUG = 184, //Bank 23: 184-191
228 MISCREG_TRACE_CONTROL1,
229 MISCREG_TRACE_CONTROL2,
230 MISCREG_USER_TRACE_DATA,
233 MISCREG_DEPC = 192, //Bank 24: 192-199
235 MISCREG_PERFCNT0 = 200, //Bank 25: 200-207
244 MISCREG_ERRCTL = 208, //Bank 26: 208-215
246 MISCREG_CACHEERR0 = 216, //Bank 27: 216-223
251 MISCREG_TAGLO0 = 224, //Bank 28: 224-231
260 MISCREG_TAGHI0 = 232, //Bank 29: 232-239
270 MISCREG_ERROR_EPC = 240, //Bank 30: 240-247
272 MISCREG_DESAVE = 248, //Bank 31: 248-256
274 MISCREG_LLFLAG = 257,
280 const int NumMiscRegs = MISCREG_NUMREGS;
282 const int TotalNumRegs = NumIntRegs + NumFloatRegs + NumMiscRegs;
284 // Not applicable to MIPS
285 using VecElem = ::DummyVecElem;
286 using VecReg = ::DummyVecReg;
287 using ConstVecReg = ::DummyConstVecReg;
288 using VecRegContainer = ::DummyVecRegContainer;
289 constexpr unsigned NumVecElemPerVecReg = ::DummyNumVecElemPerVecReg;
290 constexpr size_t VecRegSizeBytes = ::DummyVecRegSizeBytes;
292 // Not applicable to MIPS
293 using VecPredReg = ::DummyVecPredReg;
294 using ConstVecPredReg = ::DummyConstVecPredReg;
295 using VecPredRegContainer = ::DummyVecPredRegContainer;
296 constexpr size_t VecPredRegSizeBits = ::DummyVecPredRegSizeBits;
297 constexpr bool VecPredRegHasPackedRepr = ::DummyVecPredRegHasPackedRepr;
299 } // namespace MipsISA