1 //===- MipsDSPInstrFormats.td - Mips Instruction Formats ---*- tablegen -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 class DspMMRel; 11 12 def Dsp2MicroMips : InstrMapping { 13 let FilterClass = "DspMMRel"; 14 // Instructions with the same BaseOpcode and isNVStore values form a row. 15 let RowFields = ["BaseOpcode"]; 16 // Instructions with the same predicate sense form a column. 17 let ColFields = ["Arch"]; 18 // The key column is the unpredicated instructions. 19 let KeyCol = ["dsp"]; 20 // Value columns are PredSense=true and PredSense=false 21 let ValueCols = [["dsp"], ["mmdsp"]]; 22 } 23 24 def HasDSP : Predicate<"Subtarget->hasDSP()">, 25 AssemblerPredicate<"FeatureDSP">; 26 def HasDSPR2 : Predicate<"Subtarget->hasDSPR2()">, 27 AssemblerPredicate<"FeatureDSPR2">; 28 def HasDSPR3 : Predicate<"Subtarget->hasDSPR3()">, 29 AssemblerPredicate<"FeatureDSPR3">; 30 31 class ISA_DSPR2 { 32 list<Predicate> ASEPredicate = [HasDSPR2]; 33 } 34 35 class ISA_DSPR3 { 36 list<Predicate> ASEPredicate = [HasDSPR3]; 37 } 38 39 // Fields. 40 class Field6<bits<6> val> { 41 bits<6> V = val; 42 } 43 44 def SPECIAL3_OPCODE : Field6<0b011111>; 45 def REGIMM_OPCODE : Field6<0b000001>; 46 47 class DSPInst<string opstr = ""> 48 : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther> { 49 let ASEPredicate = [HasDSP]; 50 string BaseOpcode = opstr; 51 string Arch = "dsp"; 52 } 53 54 class PseudoDSP<dag outs, dag ins, list<dag> pattern, 55 InstrItinClass itin = IIPseudo> 56 : MipsPseudo<outs, ins, pattern, itin> { 57 let ASEPredicate = [HasDSP]; 58 } 59 60 class DSPInstAlias<string Asm, dag Result, bit Emit = 0b1> 61 : InstAlias<Asm, Result, Emit>, PredicateControl { 62 let ASEPredicate = [HasDSP]; 63 } 64 65 // ADDU.QB sub-class format. 66 class ADDU_QB_FMT<bits<5> op> : DSPInst { 67 bits<5> rd; 68 bits<5> rs; 69 bits<5> rt; 70 71 let Opcode = SPECIAL3_OPCODE.V; 72 73 let Inst{25-21} = rs; 74 let Inst{20-16} = rt; 75 let Inst{15-11} = rd; 76 let Inst{10-6} = op; 77 let Inst{5-0} = 0b010000; 78 } 79 80 class RADDU_W_QB_FMT<bits<5> op> : DSPInst { 81 bits<5> rd; 82 bits<5> rs; 83 84 let Opcode = SPECIAL3_OPCODE.V; 85 86 let Inst{25-21} = rs; 87 let Inst{20-16} = 0; 88 let Inst{15-11} = rd; 89 let Inst{10-6} = op; 90 let Inst{5-0} = 0b010000; 91 } 92 93 // CMPU.EQ.QB sub-class format. 94 class CMP_EQ_QB_R2_FMT<bits<5> op> : DSPInst { 95 bits<5> rs; 96 bits<5> rt; 97 98 let Opcode = SPECIAL3_OPCODE.V; 99 100 let Inst{25-21} = rs; 101 let Inst{20-16} = rt; 102 let Inst{15-11} = 0; 103 let Inst{10-6} = op; 104 let Inst{5-0} = 0b010001; 105 } 106 107 class CMP_EQ_QB_R3_FMT<bits<5> op> : DSPInst { 108 bits<5> rs; 109 bits<5> rt; 110 bits<5> rd; 111 112 let Opcode = SPECIAL3_OPCODE.V; 113 114 let Inst{25-21} = rs; 115 let Inst{20-16} = rt; 116 let Inst{15-11} = rd; 117 let Inst{10-6} = op; 118 let Inst{5-0} = 0b010001; 119 } 120 121 class PRECR_SRA_PH_W_FMT<bits<5> op> : DSPInst { 122 bits<5> rs; 123 bits<5> rt; 124 bits<5> sa; 125 126 let Opcode = SPECIAL3_OPCODE.V; 127 128 let Inst{25-21} = rs; 129 let Inst{20-16} = rt; 130 let Inst{15-11} = sa; 131 let Inst{10-6} = op; 132 let Inst{5-0} = 0b010001; 133 } 134 135 // ABSQ_S.PH sub-class format. 136 class ABSQ_S_PH_R2_FMT<bits<5> op> : DSPInst { 137 bits<5> rd; 138 bits<5> rt; 139 140 let Opcode = SPECIAL3_OPCODE.V; 141 142 let Inst{25-21} = 0; 143 let Inst{20-16} = rt; 144 let Inst{15-11} = rd; 145 let Inst{10-6} = op; 146 let Inst{5-0} = 0b010010; 147 } 148 149 150 class REPL_FMT<bits<5> op> : DSPInst { 151 bits<5> rd; 152 bits<10> imm; 153 154 let Opcode = SPECIAL3_OPCODE.V; 155 156 let Inst{25-16} = imm; 157 let Inst{15-11} = rd; 158 let Inst{10-6} = op; 159 let Inst{5-0} = 0b010010; 160 } 161 162 // SHLL.QB sub-class format. 163 class SHLL_QB_FMT<bits<5> op> : DSPInst { 164 bits<5> rd; 165 bits<5> rt; 166 bits<5> rs_sa; 167 168 let Opcode = SPECIAL3_OPCODE.V; 169 170 let Inst{25-21} = rs_sa; 171 let Inst{20-16} = rt; 172 let Inst{15-11} = rd; 173 let Inst{10-6} = op; 174 let Inst{5-0} = 0b010011; 175 } 176 177 // LX sub-class format. 178 class LX_FMT<bits<5> op> : DSPInst { 179 bits<5> rd; 180 bits<5> base; 181 bits<5> index; 182 183 let Opcode = SPECIAL3_OPCODE.V; 184 185 let Inst{25-21} = base; 186 let Inst{20-16} = index; 187 let Inst{15-11} = rd; 188 let Inst{10-6} = op; 189 let Inst{5-0} = 0b001010; 190 } 191 192 // ADDUH.QB sub-class format. 193 class ADDUH_QB_FMT<bits<5> op> : DSPInst { 194 bits<5> rd; 195 bits<5> rs; 196 bits<5> rt; 197 198 let Opcode = SPECIAL3_OPCODE.V; 199 200 let Inst{25-21} = rs; 201 let Inst{20-16} = rt; 202 let Inst{15-11} = rd; 203 let Inst{10-6} = op; 204 let Inst{5-0} = 0b011000; 205 } 206 207 // APPEND sub-class format. 208 class APPEND_FMT<bits<5> op> : DSPInst { 209 bits<5> rt; 210 bits<5> rs; 211 bits<5> sa; 212 213 let Opcode = SPECIAL3_OPCODE.V; 214 215 let Inst{25-21} = rs; 216 let Inst{20-16} = rt; 217 let Inst{15-11} = sa; 218 let Inst{10-6} = op; 219 let Inst{5-0} = 0b110001; 220 } 221 222 // DPA.W.PH sub-class format. 223 class DPA_W_PH_FMT<bits<5> op> : DSPInst { 224 bits<2> ac; 225 bits<5> rs; 226 bits<5> rt; 227 228 let Opcode = SPECIAL3_OPCODE.V; 229 230 let Inst{25-21} = rs; 231 let Inst{20-16} = rt; 232 let Inst{15-13} = 0; 233 let Inst{12-11} = ac; 234 let Inst{10-6} = op; 235 let Inst{5-0} = 0b110000; 236 } 237 238 // MULT sub-class format. 239 class MULT_FMT<bits<6> opcode, bits<6> funct> : DSPInst { 240 bits<2> ac; 241 bits<5> rs; 242 bits<5> rt; 243 244 let Opcode = opcode; 245 246 let Inst{25-21} = rs; 247 let Inst{20-16} = rt; 248 let Inst{15-13} = 0; 249 let Inst{12-11} = ac; 250 let Inst{10-6} = 0; 251 let Inst{5-0} = funct; 252 } 253 254 // MFHI sub-class format. 255 class MFHI_FMT<bits<6> funct> : DSPInst { 256 bits<5> rd; 257 bits<2> ac; 258 259 let Inst{31-26} = 0; 260 let Inst{25-23} = 0; 261 let Inst{22-21} = ac; 262 let Inst{20-16} = 0; 263 let Inst{15-11} = rd; 264 let Inst{10-6} = 0; 265 let Inst{5-0} = funct; 266 } 267 268 // MTHI sub-class format. 269 class MTHI_FMT<bits<6> funct> : DSPInst { 270 bits<5> rs; 271 bits<2> ac; 272 273 let Inst{31-26} = 0; 274 let Inst{25-21} = rs; 275 let Inst{20-13} = 0; 276 let Inst{12-11} = ac; 277 let Inst{10-6} = 0; 278 let Inst{5-0} = funct; 279 } 280 281 // EXTR.W sub-class format (type 1). 282 class EXTR_W_TY1_FMT<bits<5> op> : DSPInst { 283 bits<5> rt; 284 bits<2> ac; 285 bits<5> shift_rs; 286 287 let Opcode = SPECIAL3_OPCODE.V; 288 289 let Inst{25-21} = shift_rs; 290 let Inst{20-16} = rt; 291 let Inst{15-13} = 0; 292 let Inst{12-11} = ac; 293 let Inst{10-6} = op; 294 let Inst{5-0} = 0b111000; 295 } 296 297 // SHILO sub-class format. 298 class SHILO_R1_FMT<bits<5> op> : DSPInst { 299 bits<2> ac; 300 bits<6> shift; 301 302 let Opcode = SPECIAL3_OPCODE.V; 303 304 let Inst{25-20} = shift; 305 let Inst{19-13} = 0; 306 let Inst{12-11} = ac; 307 let Inst{10-6} = op; 308 let Inst{5-0} = 0b111000; 309 } 310 311 class SHILO_R2_FMT<bits<5> op> : DSPInst { 312 bits<2> ac; 313 bits<5> rs; 314 315 let Opcode = SPECIAL3_OPCODE.V; 316 317 let Inst{25-21} = rs; 318 let Inst{20-13} = 0; 319 let Inst{12-11} = ac; 320 let Inst{10-6} = op; 321 let Inst{5-0} = 0b111000; 322 } 323 324 class RDDSP_FMT<bits<5> op> : DSPInst { 325 bits<5> rd; 326 bits<10> mask; 327 328 let Opcode = SPECIAL3_OPCODE.V; 329 330 let Inst{25-16} = mask; 331 let Inst{15-11} = rd; 332 let Inst{10-6} = op; 333 let Inst{5-0} = 0b111000; 334 } 335 336 class WRDSP_FMT<bits<5> op> : DSPInst { 337 bits<5> rs; 338 bits<10> mask; 339 340 let Opcode = SPECIAL3_OPCODE.V; 341 342 let Inst{25-21} = rs; 343 let Inst{20-11} = mask; 344 let Inst{10-6} = op; 345 let Inst{5-0} = 0b111000; 346 } 347 348 class BPOSGE32_FMT<bits<5> op> : DSPInst { 349 bits<16> offset; 350 351 let Opcode = REGIMM_OPCODE.V; 352 353 let Inst{25-21} = 0; 354 let Inst{20-16} = op; 355 let Inst{15-0} = offset; 356 } 357 358 // INSV sub-class format. 359 class INSV_FMT<bits<6> op> : DSPInst { 360 bits<5> rt; 361 bits<5> rs; 362 363 let Opcode = SPECIAL3_OPCODE.V; 364 365 let Inst{25-21} = rs; 366 let Inst{20-16} = rt; 367 let Inst{15-6} = 0; 368 let Inst{5-0} = op; 369 } 370
