| 1 | /* frv simulator machine independent profiling code. |
| 2 | |
| 3 | Copyright (C) 1998, 1999, 2000, 2001, 2003, 2007, 2008, 2009, 2010 |
| 4 | Free Software Foundation, Inc. |
| 5 | Contributed by Red Hat |
| 6 | |
| 7 | This file is part of the GNU simulators. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | |
| 22 | */ |
| 23 | #define WANT_CPU |
| 24 | #define WANT_CPU_FRVBF |
| 25 | |
| 26 | #include "sim-main.h" |
| 27 | #include "bfd.h" |
| 28 | |
| 29 | #if WITH_PROFILE_MODEL_P |
| 30 | |
| 31 | #include "profile.h" |
| 32 | #include "profile-fr400.h" |
| 33 | #include "profile-fr500.h" |
| 34 | #include "profile-fr550.h" |
| 35 | |
| 36 | static void |
| 37 | reset_gr_flags (SIM_CPU *cpu, INT gr) |
| 38 | { |
| 39 | SIM_DESC sd = CPU_STATE (cpu); |
| 40 | if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr400 |
| 41 | || STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr450) |
| 42 | fr400_reset_gr_flags (cpu, gr); |
| 43 | /* Other machines have no gr flags right now. */ |
| 44 | } |
| 45 | |
| 46 | static void |
| 47 | reset_fr_flags (SIM_CPU *cpu, INT fr) |
| 48 | { |
| 49 | SIM_DESC sd = CPU_STATE (cpu); |
| 50 | if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr400 |
| 51 | || STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr450) |
| 52 | fr400_reset_fr_flags (cpu, fr); |
| 53 | else if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr500) |
| 54 | fr500_reset_fr_flags (cpu, fr); |
| 55 | } |
| 56 | |
| 57 | static void |
| 58 | reset_acc_flags (SIM_CPU *cpu, INT acc) |
| 59 | { |
| 60 | SIM_DESC sd = CPU_STATE (cpu); |
| 61 | if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr400 |
| 62 | || STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr450) |
| 63 | fr400_reset_acc_flags (cpu, acc); |
| 64 | /* Other machines have no acc flags right now. */ |
| 65 | } |
| 66 | |
| 67 | static void |
| 68 | reset_cc_flags (SIM_CPU *cpu, INT cc) |
| 69 | { |
| 70 | SIM_DESC sd = CPU_STATE (cpu); |
| 71 | if (STATE_ARCHITECTURE (sd)->mach == bfd_mach_fr500) |
| 72 | fr500_reset_cc_flags (cpu, cc); |
| 73 | /* Other machines have no cc flags. */ |
| 74 | } |
| 75 | |
| 76 | void |
| 77 | set_use_is_gr_complex (SIM_CPU *cpu, INT gr) |
| 78 | { |
| 79 | if (gr != -1) |
| 80 | { |
| 81 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 82 | reset_gr_flags (cpu, gr); |
| 83 | ps->cur_gr_complex |= (((DI)1) << gr); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | void |
| 88 | set_use_not_gr_complex (SIM_CPU *cpu, INT gr) |
| 89 | { |
| 90 | if (gr != -1) |
| 91 | { |
| 92 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 93 | ps->cur_gr_complex &= ~(((DI)1) << gr); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | int |
| 98 | use_is_gr_complex (SIM_CPU *cpu, INT gr) |
| 99 | { |
| 100 | if (gr != -1) |
| 101 | { |
| 102 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 103 | return ps->cur_gr_complex & (((DI)1) << gr); |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | /* Globals flag indicates whether this insn is being modeled. */ |
| 109 | enum FRV_INSN_MODELING model_insn = FRV_INSN_NO_MODELING; |
| 110 | |
| 111 | /* static buffer for the name of the currently most restrictive hazard. */ |
| 112 | static char hazard_name[100] = ""; |
| 113 | |
| 114 | /* Print information about the wait applied to an entire VLIW insn. */ |
| 115 | FRV_INSN_FETCH_BUFFER frv_insn_fetch_buffer[] |
| 116 | = { |
| 117 | {1, NO_REQNO}, {1, NO_REQNO} /* init with impossible address. */ |
| 118 | }; |
| 119 | |
| 120 | enum cache_request |
| 121 | { |
| 122 | cache_load, |
| 123 | cache_invalidate, |
| 124 | cache_flush, |
| 125 | cache_preload, |
| 126 | cache_unlock |
| 127 | }; |
| 128 | |
| 129 | /* A queue of load requests from the data cache. Use to keep track of loads |
| 130 | which are still pending. */ |
| 131 | /* TODO -- some of these are mutually exclusive and can use a union. */ |
| 132 | typedef struct |
| 133 | { |
| 134 | FRV_CACHE *cache; |
| 135 | unsigned reqno; |
| 136 | SI address; |
| 137 | int length; |
| 138 | int is_signed; |
| 139 | int regnum; |
| 140 | int cycles; |
| 141 | int regtype; |
| 142 | int lock; |
| 143 | int all; |
| 144 | int slot; |
| 145 | int active; |
| 146 | enum cache_request request; |
| 147 | } CACHE_QUEUE_ELEMENT; |
| 148 | |
| 149 | #define CACHE_QUEUE_SIZE 64 /* TODO -- make queue dynamic */ |
| 150 | struct |
| 151 | { |
| 152 | unsigned reqno; |
| 153 | int ix; |
| 154 | CACHE_QUEUE_ELEMENT q[CACHE_QUEUE_SIZE]; |
| 155 | } cache_queue = {0, 0}; |
| 156 | |
| 157 | /* Queue a request for a load from the cache. The load will be queued as |
| 158 | 'inactive' and will be requested after the given number |
| 159 | of cycles have passed from the point the load is activated. */ |
| 160 | void |
| 161 | request_cache_load (SIM_CPU *cpu, INT regnum, int regtype, int cycles) |
| 162 | { |
| 163 | CACHE_QUEUE_ELEMENT *q; |
| 164 | FRV_VLIW *vliw; |
| 165 | int slot; |
| 166 | |
| 167 | /* For a conditional load which was not executed, CPU_LOAD_LENGTH will be |
| 168 | zero. */ |
| 169 | if (CPU_LOAD_LENGTH (cpu) == 0) |
| 170 | return; |
| 171 | |
| 172 | if (cache_queue.ix >= CACHE_QUEUE_SIZE) |
| 173 | abort (); /* TODO: Make the queue dynamic */ |
| 174 | |
| 175 | q = & cache_queue.q[cache_queue.ix]; |
| 176 | ++cache_queue.ix; |
| 177 | |
| 178 | q->reqno = cache_queue.reqno++; |
| 179 | q->request = cache_load; |
| 180 | q->cache = CPU_DATA_CACHE (cpu); |
| 181 | q->address = CPU_LOAD_ADDRESS (cpu); |
| 182 | q->length = CPU_LOAD_LENGTH (cpu); |
| 183 | q->is_signed = CPU_LOAD_SIGNED (cpu); |
| 184 | q->regnum = regnum; |
| 185 | q->regtype = regtype; |
| 186 | q->cycles = cycles; |
| 187 | q->active = 0; |
| 188 | |
| 189 | vliw = CPU_VLIW (cpu); |
| 190 | slot = vliw->next_slot - 1; |
| 191 | q->slot = (*vliw->current_vliw)[slot]; |
| 192 | |
| 193 | CPU_LOAD_LENGTH (cpu) = 0; |
| 194 | } |
| 195 | |
| 196 | /* Queue a request to flush the cache. The request will be queued as |
| 197 | 'inactive' and will be requested after the given number |
| 198 | of cycles have passed from the point the request is activated. */ |
| 199 | void |
| 200 | request_cache_flush (SIM_CPU *cpu, FRV_CACHE *cache, int cycles) |
| 201 | { |
| 202 | CACHE_QUEUE_ELEMENT *q; |
| 203 | FRV_VLIW *vliw; |
| 204 | int slot; |
| 205 | |
| 206 | if (cache_queue.ix >= CACHE_QUEUE_SIZE) |
| 207 | abort (); /* TODO: Make the queue dynamic */ |
| 208 | |
| 209 | q = & cache_queue.q[cache_queue.ix]; |
| 210 | ++cache_queue.ix; |
| 211 | |
| 212 | q->reqno = cache_queue.reqno++; |
| 213 | q->request = cache_flush; |
| 214 | q->cache = cache; |
| 215 | q->address = CPU_LOAD_ADDRESS (cpu); |
| 216 | q->all = CPU_PROFILE_STATE (cpu)->all_cache_entries; |
| 217 | q->cycles = cycles; |
| 218 | q->active = 0; |
| 219 | |
| 220 | vliw = CPU_VLIW (cpu); |
| 221 | slot = vliw->next_slot - 1; |
| 222 | q->slot = (*vliw->current_vliw)[slot]; |
| 223 | } |
| 224 | |
| 225 | /* Queue a request to invalidate the cache. The request will be queued as |
| 226 | 'inactive' and will be requested after the given number |
| 227 | of cycles have passed from the point the request is activated. */ |
| 228 | void |
| 229 | request_cache_invalidate (SIM_CPU *cpu, FRV_CACHE *cache, int cycles) |
| 230 | { |
| 231 | CACHE_QUEUE_ELEMENT *q; |
| 232 | FRV_VLIW *vliw; |
| 233 | int slot; |
| 234 | |
| 235 | if (cache_queue.ix >= CACHE_QUEUE_SIZE) |
| 236 | abort (); /* TODO: Make the queue dynamic */ |
| 237 | |
| 238 | q = & cache_queue.q[cache_queue.ix]; |
| 239 | ++cache_queue.ix; |
| 240 | |
| 241 | q->reqno = cache_queue.reqno++; |
| 242 | q->request = cache_invalidate; |
| 243 | q->cache = cache; |
| 244 | q->address = CPU_LOAD_ADDRESS (cpu); |
| 245 | q->all = CPU_PROFILE_STATE (cpu)->all_cache_entries; |
| 246 | q->cycles = cycles; |
| 247 | q->active = 0; |
| 248 | |
| 249 | vliw = CPU_VLIW (cpu); |
| 250 | slot = vliw->next_slot - 1; |
| 251 | q->slot = (*vliw->current_vliw)[slot]; |
| 252 | } |
| 253 | |
| 254 | /* Queue a request to preload the cache. The request will be queued as |
| 255 | 'inactive' and will be requested after the given number |
| 256 | of cycles have passed from the point the request is activated. */ |
| 257 | void |
| 258 | request_cache_preload (SIM_CPU *cpu, FRV_CACHE *cache, int cycles) |
| 259 | { |
| 260 | CACHE_QUEUE_ELEMENT *q; |
| 261 | FRV_VLIW *vliw; |
| 262 | int slot; |
| 263 | |
| 264 | if (cache_queue.ix >= CACHE_QUEUE_SIZE) |
| 265 | abort (); /* TODO: Make the queue dynamic */ |
| 266 | |
| 267 | q = & cache_queue.q[cache_queue.ix]; |
| 268 | ++cache_queue.ix; |
| 269 | |
| 270 | q->reqno = cache_queue.reqno++; |
| 271 | q->request = cache_preload; |
| 272 | q->cache = cache; |
| 273 | q->address = CPU_LOAD_ADDRESS (cpu); |
| 274 | q->length = CPU_LOAD_LENGTH (cpu); |
| 275 | q->lock = CPU_LOAD_LOCK (cpu); |
| 276 | q->cycles = cycles; |
| 277 | q->active = 0; |
| 278 | |
| 279 | vliw = CPU_VLIW (cpu); |
| 280 | slot = vliw->next_slot - 1; |
| 281 | q->slot = (*vliw->current_vliw)[slot]; |
| 282 | |
| 283 | CPU_LOAD_LENGTH (cpu) = 0; |
| 284 | } |
| 285 | |
| 286 | /* Queue a request to unlock the cache. The request will be queued as |
| 287 | 'inactive' and will be requested after the given number |
| 288 | of cycles have passed from the point the request is activated. */ |
| 289 | void |
| 290 | request_cache_unlock (SIM_CPU *cpu, FRV_CACHE *cache, int cycles) |
| 291 | { |
| 292 | CACHE_QUEUE_ELEMENT *q; |
| 293 | FRV_VLIW *vliw; |
| 294 | int slot; |
| 295 | |
| 296 | if (cache_queue.ix >= CACHE_QUEUE_SIZE) |
| 297 | abort (); /* TODO: Make the queue dynamic */ |
| 298 | |
| 299 | q = & cache_queue.q[cache_queue.ix]; |
| 300 | ++cache_queue.ix; |
| 301 | |
| 302 | q->reqno = cache_queue.reqno++; |
| 303 | q->request = cache_unlock; |
| 304 | q->cache = cache; |
| 305 | q->address = CPU_LOAD_ADDRESS (cpu); |
| 306 | q->cycles = cycles; |
| 307 | q->active = 0; |
| 308 | |
| 309 | vliw = CPU_VLIW (cpu); |
| 310 | slot = vliw->next_slot - 1; |
| 311 | q->slot = (*vliw->current_vliw)[slot]; |
| 312 | } |
| 313 | |
| 314 | static void |
| 315 | submit_cache_request (CACHE_QUEUE_ELEMENT *q) |
| 316 | { |
| 317 | switch (q->request) |
| 318 | { |
| 319 | case cache_load: |
| 320 | frv_cache_request_load (q->cache, q->reqno, q->address, q->slot); |
| 321 | break; |
| 322 | case cache_flush: |
| 323 | frv_cache_request_invalidate (q->cache, q->reqno, q->address, q->slot, |
| 324 | q->all, 1/*flush*/); |
| 325 | break; |
| 326 | case cache_invalidate: |
| 327 | frv_cache_request_invalidate (q->cache, q->reqno, q->address, q->slot, |
| 328 | q->all, 0/*flush*/); |
| 329 | break; |
| 330 | case cache_preload: |
| 331 | frv_cache_request_preload (q->cache, q->address, q->slot, |
| 332 | q->length, q->lock); |
| 333 | break; |
| 334 | case cache_unlock: |
| 335 | frv_cache_request_unlock (q->cache, q->address, q->slot); |
| 336 | break; |
| 337 | default: |
| 338 | abort (); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /* Activate all inactive load requests. */ |
| 343 | static void |
| 344 | activate_cache_requests (SIM_CPU *cpu) |
| 345 | { |
| 346 | int i; |
| 347 | for (i = 0; i < cache_queue.ix; ++i) |
| 348 | { |
| 349 | CACHE_QUEUE_ELEMENT *q = & cache_queue.q[i]; |
| 350 | if (! q->active) |
| 351 | { |
| 352 | q->active = 1; |
| 353 | /* Submit the request now if the cycle count is zero. */ |
| 354 | if (q->cycles == 0) |
| 355 | submit_cache_request (q); |
| 356 | } |
| 357 | } |
| 358 | } |
| 359 | |
| 360 | /* Check to see if a load is pending which affects the given register(s). |
| 361 | */ |
| 362 | int |
| 363 | load_pending_for_register (SIM_CPU *cpu, int regnum, int words, int regtype) |
| 364 | { |
| 365 | int i; |
| 366 | for (i = 0; i < cache_queue.ix; ++i) |
| 367 | { |
| 368 | CACHE_QUEUE_ELEMENT *q = & cache_queue.q[i]; |
| 369 | |
| 370 | /* Must be the same kind of register. */ |
| 371 | if (! q->active || q->request != cache_load || q->regtype != regtype) |
| 372 | continue; |
| 373 | |
| 374 | /* If the registers numbers are equal, then we have a match. */ |
| 375 | if (q->regnum == regnum) |
| 376 | return 1; /* load pending */ |
| 377 | |
| 378 | /* Check for overlap of a load with a multi-word register. */ |
| 379 | if (regnum < q->regnum) |
| 380 | { |
| 381 | if (regnum + words > q->regnum) |
| 382 | return 1; |
| 383 | } |
| 384 | /* Check for overlap of a multi-word load with the register. */ |
| 385 | else |
| 386 | { |
| 387 | int data_words = (q->length + sizeof (SI) - 1) / sizeof (SI); |
| 388 | if (q->regnum + data_words > regnum) |
| 389 | return 1; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | return 0; /* no load pending */ |
| 394 | } |
| 395 | |
| 396 | /* Check to see if a cache flush pending which affects the given address. */ |
| 397 | static int |
| 398 | flush_pending_for_address (SIM_CPU *cpu, SI address) |
| 399 | { |
| 400 | int line_mask = ~(CPU_DATA_CACHE (cpu)->line_size - 1); |
| 401 | int i; |
| 402 | for (i = 0; i < cache_queue.ix; ++i) |
| 403 | { |
| 404 | CACHE_QUEUE_ELEMENT *q = & cache_queue.q[i]; |
| 405 | |
| 406 | /* Must be the same kind of request and active. */ |
| 407 | if (! q->active || q->request != cache_flush) |
| 408 | continue; |
| 409 | |
| 410 | /* If the addresses are equal, then we have a match. */ |
| 411 | if ((q->address & line_mask) == (address & line_mask)) |
| 412 | return 1; /* flush pending */ |
| 413 | } |
| 414 | |
| 415 | return 0; /* no flush pending */ |
| 416 | } |
| 417 | |
| 418 | static void |
| 419 | remove_cache_queue_element (SIM_CPU *cpu, int i) |
| 420 | { |
| 421 | /* If we are removing the load of a FR register, then remember which one(s). |
| 422 | */ |
| 423 | CACHE_QUEUE_ELEMENT q = cache_queue.q[i]; |
| 424 | |
| 425 | for (--cache_queue.ix; i < cache_queue.ix; ++i) |
| 426 | cache_queue.q[i] = cache_queue.q[i + 1]; |
| 427 | |
| 428 | /* If we removed a load of a FR register, check to see if any other loads |
| 429 | of that register is still queued. If not, then apply the queued post |
| 430 | processing time of that register to its latency. Also apply |
| 431 | 1 extra cycle of latency to the register since it was a floating point |
| 432 | load. */ |
| 433 | if (q.request == cache_load && q.regtype != REGTYPE_NONE) |
| 434 | { |
| 435 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 436 | int data_words = (q.length + sizeof (SI) - 1) / sizeof (SI); |
| 437 | int j; |
| 438 | for (j = 0; j < data_words; ++j) |
| 439 | { |
| 440 | int regnum = q.regnum + j; |
| 441 | if (! load_pending_for_register (cpu, regnum, 1, q.regtype)) |
| 442 | { |
| 443 | if (q.regtype == REGTYPE_FR) |
| 444 | { |
| 445 | int *fr = ps->fr_busy; |
| 446 | fr[regnum] += 1 + ps->fr_ptime[regnum]; |
| 447 | ps->fr_ptime[regnum] = 0; |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* Copy data from the cache buffer to the target register(s). */ |
| 455 | static void |
| 456 | copy_load_data (SIM_CPU *current_cpu, FRV_CACHE *cache, int slot, |
| 457 | CACHE_QUEUE_ELEMENT *q) |
| 458 | { |
| 459 | switch (q->length) |
| 460 | { |
| 461 | case 1: |
| 462 | if (q->regtype == REGTYPE_FR) |
| 463 | { |
| 464 | if (q->is_signed) |
| 465 | { |
| 466 | QI value = CACHE_RETURN_DATA (cache, slot, q->address, QI, 1); |
| 467 | SET_H_FR (q->regnum, value); |
| 468 | } |
| 469 | else |
| 470 | { |
| 471 | UQI value = CACHE_RETURN_DATA (cache, slot, q->address, UQI, 1); |
| 472 | SET_H_FR (q->regnum, value); |
| 473 | } |
| 474 | } |
| 475 | else |
| 476 | { |
| 477 | if (q->is_signed) |
| 478 | { |
| 479 | QI value = CACHE_RETURN_DATA (cache, slot, q->address, QI, 1); |
| 480 | SET_H_GR (q->regnum, value); |
| 481 | } |
| 482 | else |
| 483 | { |
| 484 | UQI value = CACHE_RETURN_DATA (cache, slot, q->address, UQI, 1); |
| 485 | SET_H_GR (q->regnum, value); |
| 486 | } |
| 487 | } |
| 488 | break; |
| 489 | case 2: |
| 490 | if (q->regtype == REGTYPE_FR) |
| 491 | { |
| 492 | if (q->is_signed) |
| 493 | { |
| 494 | HI value = CACHE_RETURN_DATA (cache, slot, q->address, HI, 2); |
| 495 | SET_H_FR (q->regnum, value); |
| 496 | } |
| 497 | else |
| 498 | { |
| 499 | UHI value = CACHE_RETURN_DATA (cache, slot, q->address, UHI, 2); |
| 500 | SET_H_FR (q->regnum, value); |
| 501 | } |
| 502 | } |
| 503 | else |
| 504 | { |
| 505 | if (q->is_signed) |
| 506 | { |
| 507 | HI value = CACHE_RETURN_DATA (cache, slot, q->address, HI, 2); |
| 508 | SET_H_GR (q->regnum, value); |
| 509 | } |
| 510 | else |
| 511 | { |
| 512 | UHI value = CACHE_RETURN_DATA (cache, slot, q->address, UHI, 2); |
| 513 | SET_H_GR (q->regnum, value); |
| 514 | } |
| 515 | } |
| 516 | break; |
| 517 | case 4: |
| 518 | if (q->regtype == REGTYPE_FR) |
| 519 | { |
| 520 | SET_H_FR (q->regnum, |
| 521 | CACHE_RETURN_DATA (cache, slot, q->address, SF, 4)); |
| 522 | } |
| 523 | else |
| 524 | { |
| 525 | SET_H_GR (q->regnum, |
| 526 | CACHE_RETURN_DATA (cache, slot, q->address, SI, 4)); |
| 527 | } |
| 528 | break; |
| 529 | case 8: |
| 530 | if (q->regtype == REGTYPE_FR) |
| 531 | { |
| 532 | SET_H_FR_DOUBLE (q->regnum, |
| 533 | CACHE_RETURN_DATA (cache, slot, q->address, DF, 8)); |
| 534 | } |
| 535 | else |
| 536 | { |
| 537 | SET_H_GR_DOUBLE (q->regnum, |
| 538 | CACHE_RETURN_DATA (cache, slot, q->address, DI, 8)); |
| 539 | } |
| 540 | break; |
| 541 | case 16: |
| 542 | if (q->regtype == REGTYPE_FR) |
| 543 | frvbf_h_fr_quad_set_handler (current_cpu, q->regnum, |
| 544 | CACHE_RETURN_DATA_ADDRESS (cache, slot, |
| 545 | q->address, |
| 546 | 16)); |
| 547 | else |
| 548 | frvbf_h_gr_quad_set_handler (current_cpu, q->regnum, |
| 549 | CACHE_RETURN_DATA_ADDRESS (cache, slot, |
| 550 | q->address, |
| 551 | 16)); |
| 552 | break; |
| 553 | default: |
| 554 | abort (); |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | static int |
| 559 | request_complete (SIM_CPU *cpu, CACHE_QUEUE_ELEMENT *q) |
| 560 | { |
| 561 | FRV_CACHE* cache; |
| 562 | if (! q->active || q->cycles > 0) |
| 563 | return 0; |
| 564 | |
| 565 | cache = CPU_DATA_CACHE (cpu); |
| 566 | switch (q->request) |
| 567 | { |
| 568 | case cache_load: |
| 569 | /* For loads, we must wait until the data is returned from the cache. */ |
| 570 | if (frv_cache_data_in_buffer (cache, 0, q->address, q->reqno)) |
| 571 | { |
| 572 | copy_load_data (cpu, cache, 0, q); |
| 573 | return 1; |
| 574 | } |
| 575 | if (frv_cache_data_in_buffer (cache, 1, q->address, q->reqno)) |
| 576 | { |
| 577 | copy_load_data (cpu, cache, 1, q); |
| 578 | return 1; |
| 579 | } |
| 580 | break; |
| 581 | |
| 582 | case cache_flush: |
| 583 | /* We must wait until the data is flushed. */ |
| 584 | if (frv_cache_data_flushed (cache, 0, q->address, q->reqno)) |
| 585 | return 1; |
| 586 | if (frv_cache_data_flushed (cache, 1, q->address, q->reqno)) |
| 587 | return 1; |
| 588 | break; |
| 589 | |
| 590 | default: |
| 591 | /* All other requests are complete once they've been made. */ |
| 592 | return 1; |
| 593 | } |
| 594 | |
| 595 | return 0; |
| 596 | } |
| 597 | |
| 598 | /* Run the insn and data caches through the given number of cycles, taking |
| 599 | note of load requests which are fullfilled as a result. */ |
| 600 | static void |
| 601 | run_caches (SIM_CPU *cpu, int cycles) |
| 602 | { |
| 603 | FRV_CACHE* data_cache = CPU_DATA_CACHE (cpu); |
| 604 | FRV_CACHE* insn_cache = CPU_INSN_CACHE (cpu); |
| 605 | int i; |
| 606 | /* For each cycle, run the caches, noting which requests have been fullfilled |
| 607 | and submitting new requests on their designated cycles. */ |
| 608 | for (i = 0; i < cycles; ++i) |
| 609 | { |
| 610 | int j; |
| 611 | /* Run the caches through 1 cycle. */ |
| 612 | frv_cache_run (data_cache, 1); |
| 613 | frv_cache_run (insn_cache, 1); |
| 614 | |
| 615 | /* Note whether prefetched insn data has been loaded yet. */ |
| 616 | for (j = LS; j < FRV_CACHE_PIPELINES; ++j) |
| 617 | { |
| 618 | if (frv_insn_fetch_buffer[j].reqno != NO_REQNO |
| 619 | && frv_cache_data_in_buffer (insn_cache, j, |
| 620 | frv_insn_fetch_buffer[j].address, |
| 621 | frv_insn_fetch_buffer[j].reqno)) |
| 622 | frv_insn_fetch_buffer[j].reqno = NO_REQNO; |
| 623 | } |
| 624 | |
| 625 | /* Check to see which requests have been satisfied and which should |
| 626 | be submitted now. */ |
| 627 | for (j = 0; j < cache_queue.ix; ++j) |
| 628 | { |
| 629 | CACHE_QUEUE_ELEMENT *q = & cache_queue.q[j]; |
| 630 | if (! q->active) |
| 631 | continue; |
| 632 | |
| 633 | /* If a load has been satisfied, complete the operation and remove it |
| 634 | from the queue. */ |
| 635 | if (request_complete (cpu, q)) |
| 636 | { |
| 637 | remove_cache_queue_element (cpu, j); |
| 638 | --j; |
| 639 | continue; |
| 640 | } |
| 641 | |
| 642 | /* Decrease the cycle count of each queued request. |
| 643 | Submit a request for each queued request whose cycle count has |
| 644 | become zero. */ |
| 645 | --q->cycles; |
| 646 | if (q->cycles == 0) |
| 647 | submit_cache_request (q); |
| 648 | } |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | static void |
| 653 | apply_latency_adjustments (SIM_CPU *cpu) |
| 654 | { |
| 655 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 656 | int i; |
| 657 | /* update the latencies of the registers. */ |
| 658 | int *fr = ps->fr_busy; |
| 659 | int *acc = ps->acc_busy; |
| 660 | for (i = 0; i < 64; ++i) |
| 661 | { |
| 662 | if (ps->fr_busy_adjust[i] > 0) |
| 663 | *fr -= ps->fr_busy_adjust[i]; /* OK if it goes negative. */ |
| 664 | if (ps->acc_busy_adjust[i] > 0) |
| 665 | *acc -= ps->acc_busy_adjust[i]; /* OK if it goes negative. */ |
| 666 | ++fr; |
| 667 | ++acc; |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | /* Account for the number of cycles which have just passed in the latency of |
| 672 | various system elements. Works for negative cycles too so that latency |
| 673 | can be extended in the case of insn fetch latency. |
| 674 | If negative or zero, then no adjustment is necessary. */ |
| 675 | static void |
| 676 | update_latencies (SIM_CPU *cpu, int cycles) |
| 677 | { |
| 678 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 679 | int i; |
| 680 | /* update the latencies of the registers. */ |
| 681 | int *fdiv; |
| 682 | int *fsqrt; |
| 683 | int *idiv; |
| 684 | int *flt; |
| 685 | int *media; |
| 686 | int *ccr; |
| 687 | int *gr = ps->gr_busy; |
| 688 | int *fr = ps->fr_busy; |
| 689 | int *acc = ps->acc_busy; |
| 690 | int *spr; |
| 691 | /* This loop handles GR, FR and ACC registers. */ |
| 692 | for (i = 0; i < 64; ++i) |
| 693 | { |
| 694 | if (*gr <= cycles) |
| 695 | { |
| 696 | *gr = 0; |
| 697 | reset_gr_flags (cpu, i); |
| 698 | } |
| 699 | else |
| 700 | *gr -= cycles; |
| 701 | /* If the busy drops to 0, then mark the register as |
| 702 | "not in use". */ |
| 703 | if (*fr <= cycles) |
| 704 | { |
| 705 | int *fr_lat = ps->fr_latency + i; |
| 706 | *fr = 0; |
| 707 | ps->fr_busy_adjust[i] = 0; |
| 708 | /* Only clear flags if this register has no target latency. */ |
| 709 | if (*fr_lat == 0) |
| 710 | reset_fr_flags (cpu, i); |
| 711 | } |
| 712 | else |
| 713 | *fr -= cycles; |
| 714 | /* If the busy drops to 0, then mark the register as |
| 715 | "not in use". */ |
| 716 | if (*acc <= cycles) |
| 717 | { |
| 718 | int *acc_lat = ps->acc_latency + i; |
| 719 | *acc = 0; |
| 720 | ps->acc_busy_adjust[i] = 0; |
| 721 | /* Only clear flags if this register has no target latency. */ |
| 722 | if (*acc_lat == 0) |
| 723 | reset_acc_flags (cpu, i); |
| 724 | } |
| 725 | else |
| 726 | *acc -= cycles; |
| 727 | ++gr; |
| 728 | ++fr; |
| 729 | ++acc; |
| 730 | } |
| 731 | /* This loop handles CCR registers. */ |
| 732 | ccr = ps->ccr_busy; |
| 733 | for (i = 0; i < 8; ++i) |
| 734 | { |
| 735 | if (*ccr <= cycles) |
| 736 | { |
| 737 | *ccr = 0; |
| 738 | reset_cc_flags (cpu, i); |
| 739 | } |
| 740 | else |
| 741 | *ccr -= cycles; |
| 742 | ++ccr; |
| 743 | } |
| 744 | /* This loop handles SPR registers. */ |
| 745 | spr = ps->spr_busy; |
| 746 | for (i = 0; i < 4096; ++i) |
| 747 | { |
| 748 | if (*spr <= cycles) |
| 749 | *spr = 0; |
| 750 | else |
| 751 | *spr -= cycles; |
| 752 | ++spr; |
| 753 | } |
| 754 | /* This loop handles resources. */ |
| 755 | idiv = ps->idiv_busy; |
| 756 | fdiv = ps->fdiv_busy; |
| 757 | fsqrt = ps->fsqrt_busy; |
| 758 | for (i = 0; i < 2; ++i) |
| 759 | { |
| 760 | *idiv = (*idiv <= cycles) ? 0 : (*idiv - cycles); |
| 761 | *fdiv = (*fdiv <= cycles) ? 0 : (*fdiv - cycles); |
| 762 | *fsqrt = (*fsqrt <= cycles) ? 0 : (*fsqrt - cycles); |
| 763 | ++idiv; |
| 764 | ++fdiv; |
| 765 | ++fsqrt; |
| 766 | } |
| 767 | /* Float and media units can occur in 4 slots on some machines. */ |
| 768 | flt = ps->float_busy; |
| 769 | media = ps->media_busy; |
| 770 | for (i = 0; i < 4; ++i) |
| 771 | { |
| 772 | *flt = (*flt <= cycles) ? 0 : (*flt - cycles); |
| 773 | *media = (*media <= cycles) ? 0 : (*media - cycles); |
| 774 | ++flt; |
| 775 | ++media; |
| 776 | } |
| 777 | } |
| 778 | |
| 779 | /* Print information about the wait for the given number of cycles. */ |
| 780 | void |
| 781 | frv_model_trace_wait_cycles (SIM_CPU *cpu, int cycles, const char *hazard_name) |
| 782 | { |
| 783 | if (TRACE_INSN_P (cpu) && cycles > 0) |
| 784 | { |
| 785 | SIM_DESC sd = CPU_STATE (cpu); |
| 786 | trace_printf (sd, cpu, "**** %s wait %d cycles ***\n", |
| 787 | hazard_name, cycles); |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | void |
| 792 | trace_vliw_wait_cycles (SIM_CPU *cpu) |
| 793 | { |
| 794 | if (TRACE_INSN_P (cpu)) |
| 795 | { |
| 796 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 797 | frv_model_trace_wait_cycles (cpu, ps->vliw_wait, hazard_name); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | /* Wait for the given number of cycles. */ |
| 802 | void |
| 803 | frv_model_advance_cycles (SIM_CPU *cpu, int cycles) |
| 804 | { |
| 805 | PROFILE_DATA *p = CPU_PROFILE_DATA (cpu); |
| 806 | update_latencies (cpu, cycles); |
| 807 | run_caches (cpu, cycles); |
| 808 | PROFILE_MODEL_TOTAL_CYCLES (p) += cycles; |
| 809 | } |
| 810 | |
| 811 | void |
| 812 | handle_resource_wait (SIM_CPU *cpu) |
| 813 | { |
| 814 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 815 | if (ps->vliw_wait != 0) |
| 816 | frv_model_advance_cycles (cpu, ps->vliw_wait); |
| 817 | if (ps->vliw_load_stall > ps->vliw_wait) |
| 818 | ps->vliw_load_stall -= ps->vliw_wait; |
| 819 | else |
| 820 | ps->vliw_load_stall = 0; |
| 821 | } |
| 822 | |
| 823 | /* Account for the number of cycles until these resources will be available |
| 824 | again. */ |
| 825 | static void |
| 826 | update_target_latencies (SIM_CPU *cpu) |
| 827 | { |
| 828 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 829 | int i; |
| 830 | /* update the latencies of the registers. */ |
| 831 | int *ccr_lat; |
| 832 | int *gr_lat = ps->gr_latency; |
| 833 | int *fr_lat = ps->fr_latency; |
| 834 | int *acc_lat = ps->acc_latency; |
| 835 | int *spr_lat; |
| 836 | int *ccr; |
| 837 | int *gr = ps->gr_busy; |
| 838 | int *fr = ps->fr_busy; |
| 839 | int *acc = ps->acc_busy; |
| 840 | int *spr; |
| 841 | /* This loop handles GR, FR and ACC registers. */ |
| 842 | for (i = 0; i < 64; ++i) |
| 843 | { |
| 844 | if (*gr_lat) |
| 845 | { |
| 846 | *gr = *gr_lat; |
| 847 | *gr_lat = 0; |
| 848 | } |
| 849 | if (*fr_lat) |
| 850 | { |
| 851 | *fr = *fr_lat; |
| 852 | *fr_lat = 0; |
| 853 | } |
| 854 | if (*acc_lat) |
| 855 | { |
| 856 | *acc = *acc_lat; |
| 857 | *acc_lat = 0; |
| 858 | } |
| 859 | ++gr; ++gr_lat; |
| 860 | ++fr; ++fr_lat; |
| 861 | ++acc; ++acc_lat; |
| 862 | } |
| 863 | /* This loop handles CCR registers. */ |
| 864 | ccr = ps->ccr_busy; |
| 865 | ccr_lat = ps->ccr_latency; |
| 866 | for (i = 0; i < 8; ++i) |
| 867 | { |
| 868 | if (*ccr_lat) |
| 869 | { |
| 870 | *ccr = *ccr_lat; |
| 871 | *ccr_lat = 0; |
| 872 | } |
| 873 | ++ccr; ++ccr_lat; |
| 874 | } |
| 875 | /* This loop handles SPR registers. */ |
| 876 | spr = ps->spr_busy; |
| 877 | spr_lat = ps->spr_latency; |
| 878 | for (i = 0; i < 4096; ++i) |
| 879 | { |
| 880 | if (*spr_lat) |
| 881 | { |
| 882 | *spr = *spr_lat; |
| 883 | *spr_lat = 0; |
| 884 | } |
| 885 | ++spr; ++spr_lat; |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | /* Run the caches until all pending cache flushes are complete. */ |
| 890 | static void |
| 891 | wait_for_flush (SIM_CPU *cpu) |
| 892 | { |
| 893 | SI address = CPU_LOAD_ADDRESS (cpu); |
| 894 | int wait = 0; |
| 895 | while (flush_pending_for_address (cpu, address)) |
| 896 | { |
| 897 | frv_model_advance_cycles (cpu, 1); |
| 898 | ++wait; |
| 899 | } |
| 900 | if (TRACE_INSN_P (cpu) && wait) |
| 901 | { |
| 902 | sprintf (hazard_name, "Data cache flush address %p:", address); |
| 903 | frv_model_trace_wait_cycles (cpu, wait, hazard_name); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | /* Initialize cycle counting for an insn. |
| 908 | FIRST_P is non-zero if this is the first insn in a set of parallel |
| 909 | insns. */ |
| 910 | void |
| 911 | frvbf_model_insn_before (SIM_CPU *cpu, int first_p) |
| 912 | { |
| 913 | SIM_DESC sd = CPU_STATE (cpu); |
| 914 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 915 | |
| 916 | ps->vliw_wait = 0; |
| 917 | ps->post_wait = 0; |
| 918 | memset (ps->fr_busy_adjust, 0, sizeof (ps->fr_busy_adjust)); |
| 919 | memset (ps->acc_busy_adjust, 0, sizeof (ps->acc_busy_adjust)); |
| 920 | |
| 921 | if (first_p) |
| 922 | { |
| 923 | ps->vliw_insns++; |
| 924 | ps->vliw_cycles = 0; |
| 925 | ps->vliw_branch_taken = 0; |
| 926 | ps->vliw_load_stall = 0; |
| 927 | } |
| 928 | |
| 929 | switch (STATE_ARCHITECTURE (sd)->mach) |
| 930 | { |
| 931 | case bfd_mach_fr400: |
| 932 | case bfd_mach_fr450: |
| 933 | fr400_model_insn_before (cpu, first_p); |
| 934 | break; |
| 935 | case bfd_mach_fr500: |
| 936 | fr500_model_insn_before (cpu, first_p); |
| 937 | break; |
| 938 | case bfd_mach_fr550: |
| 939 | fr550_model_insn_before (cpu, first_p); |
| 940 | break; |
| 941 | default: |
| 942 | break; |
| 943 | } |
| 944 | |
| 945 | if (first_p) |
| 946 | wait_for_flush (cpu); |
| 947 | } |
| 948 | |
| 949 | /* Record the cycles computed for an insn. |
| 950 | LAST_P is non-zero if this is the last insn in a set of parallel insns, |
| 951 | and we update the total cycle count. |
| 952 | CYCLES is the cycle count of the insn. */ |
| 953 | |
| 954 | void |
| 955 | frvbf_model_insn_after (SIM_CPU *cpu, int last_p, int cycles) |
| 956 | { |
| 957 | PROFILE_DATA *p = CPU_PROFILE_DATA (cpu); |
| 958 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 959 | SIM_DESC sd = CPU_STATE (cpu); |
| 960 | |
| 961 | PROFILE_MODEL_CUR_INSN_CYCLES (p) = cycles; |
| 962 | |
| 963 | /* The number of cycles for a VLIW insn is the maximum number of cycles |
| 964 | used by any individual insn within it. */ |
| 965 | if (cycles > ps->vliw_cycles) |
| 966 | ps->vliw_cycles = cycles; |
| 967 | |
| 968 | if (last_p) |
| 969 | { |
| 970 | /* This is the last insn in a VLIW insn. */ |
| 971 | struct frv_interrupt_timer *timer = & frv_interrupt_state.timer; |
| 972 | |
| 973 | activate_cache_requests (cpu); /* before advancing cycles. */ |
| 974 | apply_latency_adjustments (cpu); /* must go first. */ |
| 975 | update_target_latencies (cpu); /* must go next. */ |
| 976 | frv_model_advance_cycles (cpu, ps->vliw_cycles); |
| 977 | |
| 978 | PROFILE_MODEL_LOAD_STALL_CYCLES (p) += ps->vliw_load_stall; |
| 979 | |
| 980 | /* Check the interrupt timer. cycles contains the total cycle count. */ |
| 981 | if (timer->enabled) |
| 982 | { |
| 983 | cycles = PROFILE_MODEL_TOTAL_CYCLES (p); |
| 984 | if (timer->current % timer->value |
| 985 | + (cycles - timer->current) >= timer->value) |
| 986 | frv_queue_external_interrupt (cpu, timer->interrupt); |
| 987 | timer->current = cycles; |
| 988 | } |
| 989 | |
| 990 | ps->past_first_p = 0; /* Next one will be the first in a new VLIW. */ |
| 991 | ps->branch_address = -1; |
| 992 | } |
| 993 | else |
| 994 | ps->past_first_p = 1; |
| 995 | |
| 996 | switch (STATE_ARCHITECTURE (sd)->mach) |
| 997 | { |
| 998 | case bfd_mach_fr400: |
| 999 | case bfd_mach_fr450: |
| 1000 | fr400_model_insn_after (cpu, last_p, cycles); |
| 1001 | break; |
| 1002 | case bfd_mach_fr500: |
| 1003 | fr500_model_insn_after (cpu, last_p, cycles); |
| 1004 | break; |
| 1005 | case bfd_mach_fr550: |
| 1006 | fr550_model_insn_after (cpu, last_p, cycles); |
| 1007 | break; |
| 1008 | default: |
| 1009 | break; |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | USI |
| 1014 | frvbf_model_branch (SIM_CPU *current_cpu, PCADDR target, int hint) |
| 1015 | { |
| 1016 | /* Record the hint and branch address for use in profiling. */ |
| 1017 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (current_cpu); |
| 1018 | ps->branch_hint = hint; |
| 1019 | ps->branch_address = target; |
| 1020 | } |
| 1021 | |
| 1022 | /* Top up the latency of the given GR by the given number of cycles. */ |
| 1023 | void |
| 1024 | update_GR_latency (SIM_CPU *cpu, INT out_GR, int cycles) |
| 1025 | { |
| 1026 | if (out_GR >= 0) |
| 1027 | { |
| 1028 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1029 | int *gr = ps->gr_latency; |
| 1030 | if (gr[out_GR] < cycles) |
| 1031 | gr[out_GR] = cycles; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | void |
| 1036 | decrease_GR_busy (SIM_CPU *cpu, INT in_GR, int cycles) |
| 1037 | { |
| 1038 | if (in_GR >= 0) |
| 1039 | { |
| 1040 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1041 | int *gr = ps->gr_busy; |
| 1042 | gr[in_GR] -= cycles; |
| 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | /* Top up the latency of the given double GR by the number of cycles. */ |
| 1047 | void |
| 1048 | update_GRdouble_latency (SIM_CPU *cpu, INT out_GR, int cycles) |
| 1049 | { |
| 1050 | if (out_GR >= 0) |
| 1051 | { |
| 1052 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1053 | int *gr = ps->gr_latency; |
| 1054 | if (gr[out_GR] < cycles) |
| 1055 | gr[out_GR] = cycles; |
| 1056 | if (out_GR < 63 && gr[out_GR + 1] < cycles) |
| 1057 | gr[out_GR + 1] = cycles; |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | void |
| 1062 | update_GR_latency_for_load (SIM_CPU *cpu, INT out_GR, int cycles) |
| 1063 | { |
| 1064 | if (out_GR >= 0) |
| 1065 | { |
| 1066 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1067 | int *gr = ps->gr_latency; |
| 1068 | |
| 1069 | /* The latency of the GR will be at least the number of cycles used |
| 1070 | by the insn. */ |
| 1071 | if (gr[out_GR] < cycles) |
| 1072 | gr[out_GR] = cycles; |
| 1073 | |
| 1074 | /* The latency will also depend on how long it takes to retrieve the |
| 1075 | data from the cache or memory. Assume that the load is issued |
| 1076 | after the last cycle of the insn. */ |
| 1077 | request_cache_load (cpu, out_GR, REGTYPE_NONE, cycles); |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | void |
| 1082 | update_GRdouble_latency_for_load (SIM_CPU *cpu, INT out_GR, int cycles) |
| 1083 | { |
| 1084 | if (out_GR >= 0) |
| 1085 | { |
| 1086 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1087 | int *gr = ps->gr_latency; |
| 1088 | |
| 1089 | /* The latency of the GR will be at least the number of cycles used |
| 1090 | by the insn. */ |
| 1091 | if (gr[out_GR] < cycles) |
| 1092 | gr[out_GR] = cycles; |
| 1093 | if (out_GR < 63 && gr[out_GR + 1] < cycles) |
| 1094 | gr[out_GR + 1] = cycles; |
| 1095 | |
| 1096 | /* The latency will also depend on how long it takes to retrieve the |
| 1097 | data from the cache or memory. Assume that the load is issued |
| 1098 | after the last cycle of the insn. */ |
| 1099 | request_cache_load (cpu, out_GR, REGTYPE_NONE, cycles); |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | void |
| 1104 | update_GR_latency_for_swap (SIM_CPU *cpu, INT out_GR, int cycles) |
| 1105 | { |
| 1106 | update_GR_latency_for_load (cpu, out_GR, cycles); |
| 1107 | } |
| 1108 | |
| 1109 | /* Top up the latency of the given FR by the given number of cycles. */ |
| 1110 | void |
| 1111 | update_FR_latency (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1112 | { |
| 1113 | if (out_FR >= 0) |
| 1114 | { |
| 1115 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1116 | int *fr = ps->fr_latency; |
| 1117 | if (fr[out_FR] < cycles) |
| 1118 | fr[out_FR] = cycles; |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | /* Top up the latency of the given double FR by the number of cycles. */ |
| 1123 | void |
| 1124 | update_FRdouble_latency (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1125 | { |
| 1126 | if (out_FR >= 0) |
| 1127 | { |
| 1128 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1129 | int *fr = ps->fr_latency; |
| 1130 | if (fr[out_FR] < cycles) |
| 1131 | fr[out_FR] = cycles; |
| 1132 | if (out_FR < 63 && fr[out_FR + 1] < cycles) |
| 1133 | fr[out_FR + 1] = cycles; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | void |
| 1138 | update_FR_latency_for_load (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1139 | { |
| 1140 | if (out_FR >= 0) |
| 1141 | { |
| 1142 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1143 | int *fr = ps->fr_latency; |
| 1144 | |
| 1145 | /* The latency of the FR will be at least the number of cycles used |
| 1146 | by the insn. */ |
| 1147 | if (fr[out_FR] < cycles) |
| 1148 | fr[out_FR] = cycles; |
| 1149 | |
| 1150 | /* The latency will also depend on how long it takes to retrieve the |
| 1151 | data from the cache or memory. Assume that the load is issued |
| 1152 | after the last cycle of the insn. */ |
| 1153 | request_cache_load (cpu, out_FR, REGTYPE_FR, cycles); |
| 1154 | } |
| 1155 | } |
| 1156 | |
| 1157 | void |
| 1158 | update_FRdouble_latency_for_load (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1159 | { |
| 1160 | if (out_FR >= 0) |
| 1161 | { |
| 1162 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1163 | int *fr = ps->fr_latency; |
| 1164 | |
| 1165 | /* The latency of the FR will be at least the number of cycles used |
| 1166 | by the insn. */ |
| 1167 | if (fr[out_FR] < cycles) |
| 1168 | fr[out_FR] = cycles; |
| 1169 | if (out_FR < 63 && fr[out_FR + 1] < cycles) |
| 1170 | fr[out_FR + 1] = cycles; |
| 1171 | |
| 1172 | /* The latency will also depend on how long it takes to retrieve the |
| 1173 | data from the cache or memory. Assume that the load is issued |
| 1174 | after the last cycle of the insn. */ |
| 1175 | request_cache_load (cpu, out_FR, REGTYPE_FR, cycles); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | /* Top up the post-processing time of the given FR by the given number of |
| 1180 | cycles. */ |
| 1181 | void |
| 1182 | update_FR_ptime (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1183 | { |
| 1184 | if (out_FR >= 0) |
| 1185 | { |
| 1186 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1187 | /* If a load is pending on this register, then add the cycles to |
| 1188 | the post processing time for this register. Otherwise apply it |
| 1189 | directly to the latency of the register. */ |
| 1190 | if (! load_pending_for_register (cpu, out_FR, 1, REGTYPE_FR)) |
| 1191 | { |
| 1192 | int *fr = ps->fr_latency; |
| 1193 | fr[out_FR] += cycles; |
| 1194 | } |
| 1195 | else |
| 1196 | ps->fr_ptime[out_FR] += cycles; |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | void |
| 1201 | update_FRdouble_ptime (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1202 | { |
| 1203 | if (out_FR >= 0) |
| 1204 | { |
| 1205 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1206 | /* If a load is pending on this register, then add the cycles to |
| 1207 | the post processing time for this register. Otherwise apply it |
| 1208 | directly to the latency of the register. */ |
| 1209 | if (! load_pending_for_register (cpu, out_FR, 2, REGTYPE_FR)) |
| 1210 | { |
| 1211 | int *fr = ps->fr_latency; |
| 1212 | fr[out_FR] += cycles; |
| 1213 | if (out_FR < 63) |
| 1214 | fr[out_FR + 1] += cycles; |
| 1215 | } |
| 1216 | else |
| 1217 | { |
| 1218 | ps->fr_ptime[out_FR] += cycles; |
| 1219 | if (out_FR < 63) |
| 1220 | ps->fr_ptime[out_FR + 1] += cycles; |
| 1221 | } |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | /* Top up the post-processing time of the given ACC by the given number of |
| 1226 | cycles. */ |
| 1227 | void |
| 1228 | update_ACC_ptime (SIM_CPU *cpu, INT out_ACC, int cycles) |
| 1229 | { |
| 1230 | if (out_ACC >= 0) |
| 1231 | { |
| 1232 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1233 | /* No load can be pending on this register. Apply the cycles |
| 1234 | directly to the latency of the register. */ |
| 1235 | int *acc = ps->acc_latency; |
| 1236 | acc[out_ACC] += cycles; |
| 1237 | } |
| 1238 | } |
| 1239 | |
| 1240 | /* Top up the post-processing time of the given SPR by the given number of |
| 1241 | cycles. */ |
| 1242 | void |
| 1243 | update_SPR_ptime (SIM_CPU *cpu, INT out_SPR, int cycles) |
| 1244 | { |
| 1245 | if (out_SPR >= 0) |
| 1246 | { |
| 1247 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1248 | /* No load can be pending on this register. Apply the cycles |
| 1249 | directly to the latency of the register. */ |
| 1250 | int *spr = ps->spr_latency; |
| 1251 | spr[out_SPR] += cycles; |
| 1252 | } |
| 1253 | } |
| 1254 | |
| 1255 | void |
| 1256 | decrease_ACC_busy (SIM_CPU *cpu, INT out_ACC, int cycles) |
| 1257 | { |
| 1258 | if (out_ACC >= 0) |
| 1259 | { |
| 1260 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1261 | int *acc = ps->acc_busy; |
| 1262 | acc[out_ACC] -= cycles; |
| 1263 | if (ps->acc_busy_adjust[out_ACC] >= 0 |
| 1264 | && cycles > ps->acc_busy_adjust[out_ACC]) |
| 1265 | ps->acc_busy_adjust[out_ACC] = cycles; |
| 1266 | } |
| 1267 | } |
| 1268 | |
| 1269 | void |
| 1270 | increase_ACC_busy (SIM_CPU *cpu, INT out_ACC, int cycles) |
| 1271 | { |
| 1272 | if (out_ACC >= 0) |
| 1273 | { |
| 1274 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1275 | int *acc = ps->acc_busy; |
| 1276 | acc[out_ACC] += cycles; |
| 1277 | } |
| 1278 | } |
| 1279 | |
| 1280 | void |
| 1281 | enforce_full_acc_latency (SIM_CPU *cpu, INT in_ACC) |
| 1282 | { |
| 1283 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1284 | ps->acc_busy_adjust [in_ACC] = -1; |
| 1285 | } |
| 1286 | |
| 1287 | void |
| 1288 | decrease_FR_busy (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1289 | { |
| 1290 | if (out_FR >= 0) |
| 1291 | { |
| 1292 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1293 | int *fr = ps->fr_busy; |
| 1294 | fr[out_FR] -= cycles; |
| 1295 | if (ps->fr_busy_adjust[out_FR] >= 0 |
| 1296 | && cycles > ps->fr_busy_adjust[out_FR]) |
| 1297 | ps->fr_busy_adjust[out_FR] = cycles; |
| 1298 | } |
| 1299 | } |
| 1300 | |
| 1301 | void |
| 1302 | increase_FR_busy (SIM_CPU *cpu, INT out_FR, int cycles) |
| 1303 | { |
| 1304 | if (out_FR >= 0) |
| 1305 | { |
| 1306 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1307 | int *fr = ps->fr_busy; |
| 1308 | fr[out_FR] += cycles; |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | /* Top up the latency of the given ACC by the given number of cycles. */ |
| 1313 | void |
| 1314 | update_ACC_latency (SIM_CPU *cpu, INT out_ACC, int cycles) |
| 1315 | { |
| 1316 | if (out_ACC >= 0) |
| 1317 | { |
| 1318 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1319 | int *acc = ps->acc_latency; |
| 1320 | if (acc[out_ACC] < cycles) |
| 1321 | acc[out_ACC] = cycles; |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | /* Top up the latency of the given CCR by the given number of cycles. */ |
| 1326 | void |
| 1327 | update_CCR_latency (SIM_CPU *cpu, INT out_CCR, int cycles) |
| 1328 | { |
| 1329 | if (out_CCR >= 0) |
| 1330 | { |
| 1331 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1332 | int *ccr = ps->ccr_latency; |
| 1333 | if (ccr[out_CCR] < cycles) |
| 1334 | ccr[out_CCR] = cycles; |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | /* Top up the latency of the given SPR by the given number of cycles. */ |
| 1339 | void |
| 1340 | update_SPR_latency (SIM_CPU *cpu, INT out_SPR, int cycles) |
| 1341 | { |
| 1342 | if (out_SPR >= 0) |
| 1343 | { |
| 1344 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1345 | int *spr = ps->spr_latency; |
| 1346 | if (spr[out_SPR] < cycles) |
| 1347 | spr[out_SPR] = cycles; |
| 1348 | } |
| 1349 | } |
| 1350 | |
| 1351 | /* Top up the latency of the given integer division resource by the given |
| 1352 | number of cycles. */ |
| 1353 | void |
| 1354 | update_idiv_resource_latency (SIM_CPU *cpu, INT in_resource, int cycles) |
| 1355 | { |
| 1356 | /* operate directly on the busy cycles since each resource can only |
| 1357 | be used once in a VLIW insn. */ |
| 1358 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1359 | int *r = ps->idiv_busy; |
| 1360 | r[in_resource] = cycles; |
| 1361 | } |
| 1362 | |
| 1363 | /* Set the latency of the given resource to the given number of cycles. */ |
| 1364 | void |
| 1365 | update_fdiv_resource_latency (SIM_CPU *cpu, INT in_resource, int cycles) |
| 1366 | { |
| 1367 | /* operate directly on the busy cycles since each resource can only |
| 1368 | be used once in a VLIW insn. */ |
| 1369 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1370 | int *r = ps->fdiv_busy; |
| 1371 | r[in_resource] = cycles; |
| 1372 | } |
| 1373 | |
| 1374 | /* Set the latency of the given resource to the given number of cycles. */ |
| 1375 | void |
| 1376 | update_fsqrt_resource_latency (SIM_CPU *cpu, INT in_resource, int cycles) |
| 1377 | { |
| 1378 | /* operate directly on the busy cycles since each resource can only |
| 1379 | be used once in a VLIW insn. */ |
| 1380 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1381 | int *r = ps->fsqrt_busy; |
| 1382 | r[in_resource] = cycles; |
| 1383 | } |
| 1384 | |
| 1385 | /* Set the latency of the given resource to the given number of cycles. */ |
| 1386 | void |
| 1387 | update_float_resource_latency (SIM_CPU *cpu, INT in_resource, int cycles) |
| 1388 | { |
| 1389 | /* operate directly on the busy cycles since each resource can only |
| 1390 | be used once in a VLIW insn. */ |
| 1391 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1392 | int *r = ps->float_busy; |
| 1393 | r[in_resource] = cycles; |
| 1394 | } |
| 1395 | |
| 1396 | void |
| 1397 | update_media_resource_latency (SIM_CPU *cpu, INT in_resource, int cycles) |
| 1398 | { |
| 1399 | /* operate directly on the busy cycles since each resource can only |
| 1400 | be used once in a VLIW insn. */ |
| 1401 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1402 | int *r = ps->media_busy; |
| 1403 | r[in_resource] = cycles; |
| 1404 | } |
| 1405 | |
| 1406 | /* Set the branch penalty to the given number of cycles. */ |
| 1407 | void |
| 1408 | update_branch_penalty (SIM_CPU *cpu, int cycles) |
| 1409 | { |
| 1410 | /* operate directly on the busy cycles since only one branch can occur |
| 1411 | in a VLIW insn. */ |
| 1412 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1413 | ps->branch_penalty = cycles; |
| 1414 | } |
| 1415 | |
| 1416 | /* Check the availability of the given GR register and update the number |
| 1417 | of cycles the current VLIW insn must wait until it is available. */ |
| 1418 | void |
| 1419 | vliw_wait_for_GR (SIM_CPU *cpu, INT in_GR) |
| 1420 | { |
| 1421 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1422 | int *gr = ps->gr_busy; |
| 1423 | /* If the latency of the register is greater than the current wait |
| 1424 | then update the current wait. */ |
| 1425 | if (in_GR >= 0 && gr[in_GR] > ps->vliw_wait) |
| 1426 | { |
| 1427 | if (TRACE_INSN_P (cpu)) |
| 1428 | sprintf (hazard_name, "Data hazard for gr%d:", in_GR); |
| 1429 | ps->vliw_wait = gr[in_GR]; |
| 1430 | } |
| 1431 | } |
| 1432 | |
| 1433 | /* Check the availability of the given GR register and update the number |
| 1434 | of cycles the current VLIW insn must wait until it is available. */ |
| 1435 | void |
| 1436 | vliw_wait_for_GRdouble (SIM_CPU *cpu, INT in_GR) |
| 1437 | { |
| 1438 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1439 | int *gr = ps->gr_busy; |
| 1440 | /* If the latency of the register is greater than the current wait |
| 1441 | then update the current wait. */ |
| 1442 | if (in_GR >= 0) |
| 1443 | { |
| 1444 | if (gr[in_GR] > ps->vliw_wait) |
| 1445 | { |
| 1446 | if (TRACE_INSN_P (cpu)) |
| 1447 | sprintf (hazard_name, "Data hazard for gr%d:", in_GR); |
| 1448 | ps->vliw_wait = gr[in_GR]; |
| 1449 | } |
| 1450 | if (in_GR < 63 && gr[in_GR + 1] > ps->vliw_wait) |
| 1451 | { |
| 1452 | if (TRACE_INSN_P (cpu)) |
| 1453 | sprintf (hazard_name, "Data hazard for gr%d:", in_GR + 1); |
| 1454 | ps->vliw_wait = gr[in_GR + 1]; |
| 1455 | } |
| 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | /* Check the availability of the given FR register and update the number |
| 1460 | of cycles the current VLIW insn must wait until it is available. */ |
| 1461 | void |
| 1462 | vliw_wait_for_FR (SIM_CPU *cpu, INT in_FR) |
| 1463 | { |
| 1464 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1465 | int *fr = ps->fr_busy; |
| 1466 | /* If the latency of the register is greater than the current wait |
| 1467 | then update the current wait. */ |
| 1468 | if (in_FR >= 0 && fr[in_FR] > ps->vliw_wait) |
| 1469 | { |
| 1470 | if (TRACE_INSN_P (cpu)) |
| 1471 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1472 | ps->vliw_wait = fr[in_FR]; |
| 1473 | } |
| 1474 | } |
| 1475 | |
| 1476 | /* Check the availability of the given GR register and update the number |
| 1477 | of cycles the current VLIW insn must wait until it is available. */ |
| 1478 | void |
| 1479 | vliw_wait_for_FRdouble (SIM_CPU *cpu, INT in_FR) |
| 1480 | { |
| 1481 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1482 | int *fr = ps->fr_busy; |
| 1483 | /* If the latency of the register is greater than the current wait |
| 1484 | then update the current wait. */ |
| 1485 | if (in_FR >= 0) |
| 1486 | { |
| 1487 | if (fr[in_FR] > ps->vliw_wait) |
| 1488 | { |
| 1489 | if (TRACE_INSN_P (cpu)) |
| 1490 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1491 | ps->vliw_wait = fr[in_FR]; |
| 1492 | } |
| 1493 | if (in_FR < 63 && fr[in_FR + 1] > ps->vliw_wait) |
| 1494 | { |
| 1495 | if (TRACE_INSN_P (cpu)) |
| 1496 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR + 1); |
| 1497 | ps->vliw_wait = fr[in_FR + 1]; |
| 1498 | } |
| 1499 | } |
| 1500 | } |
| 1501 | |
| 1502 | /* Check the availability of the given CCR register and update the number |
| 1503 | of cycles the current VLIW insn must wait until it is available. */ |
| 1504 | void |
| 1505 | vliw_wait_for_CCR (SIM_CPU *cpu, INT in_CCR) |
| 1506 | { |
| 1507 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1508 | int *ccr = ps->ccr_busy; |
| 1509 | /* If the latency of the register is greater than the current wait |
| 1510 | then update the current wait. */ |
| 1511 | if (in_CCR >= 0 && ccr[in_CCR] > ps->vliw_wait) |
| 1512 | { |
| 1513 | if (TRACE_INSN_P (cpu)) |
| 1514 | { |
| 1515 | if (in_CCR > 3) |
| 1516 | sprintf (hazard_name, "Data hazard for icc%d:", in_CCR-4); |
| 1517 | else |
| 1518 | sprintf (hazard_name, "Data hazard for fcc%d:", in_CCR); |
| 1519 | } |
| 1520 | ps->vliw_wait = ccr[in_CCR]; |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | /* Check the availability of the given ACC register and update the number |
| 1525 | of cycles the current VLIW insn must wait until it is available. */ |
| 1526 | void |
| 1527 | vliw_wait_for_ACC (SIM_CPU *cpu, INT in_ACC) |
| 1528 | { |
| 1529 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1530 | int *acc = ps->acc_busy; |
| 1531 | /* If the latency of the register is greater than the current wait |
| 1532 | then update the current wait. */ |
| 1533 | if (in_ACC >= 0 && acc[in_ACC] > ps->vliw_wait) |
| 1534 | { |
| 1535 | if (TRACE_INSN_P (cpu)) |
| 1536 | sprintf (hazard_name, "Data hazard for acc%d:", in_ACC); |
| 1537 | ps->vliw_wait = acc[in_ACC]; |
| 1538 | } |
| 1539 | } |
| 1540 | |
| 1541 | /* Check the availability of the given SPR register and update the number |
| 1542 | of cycles the current VLIW insn must wait until it is available. */ |
| 1543 | void |
| 1544 | vliw_wait_for_SPR (SIM_CPU *cpu, INT in_SPR) |
| 1545 | { |
| 1546 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1547 | int *spr = ps->spr_busy; |
| 1548 | /* If the latency of the register is greater than the current wait |
| 1549 | then update the current wait. */ |
| 1550 | if (in_SPR >= 0 && spr[in_SPR] > ps->vliw_wait) |
| 1551 | { |
| 1552 | if (TRACE_INSN_P (cpu)) |
| 1553 | sprintf (hazard_name, "Data hazard for spr %d:", in_SPR); |
| 1554 | ps->vliw_wait = spr[in_SPR]; |
| 1555 | } |
| 1556 | } |
| 1557 | |
| 1558 | /* Check the availability of the given integer division resource and update |
| 1559 | the number of cycles the current VLIW insn must wait until it is available. |
| 1560 | */ |
| 1561 | void |
| 1562 | vliw_wait_for_idiv_resource (SIM_CPU *cpu, INT in_resource) |
| 1563 | { |
| 1564 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1565 | int *r = ps->idiv_busy; |
| 1566 | /* If the latency of the resource is greater than the current wait |
| 1567 | then update the current wait. */ |
| 1568 | if (r[in_resource] > ps->vliw_wait) |
| 1569 | { |
| 1570 | if (TRACE_INSN_P (cpu)) |
| 1571 | { |
| 1572 | sprintf (hazard_name, "Resource hazard for integer division in slot I%d:", in_resource); |
| 1573 | } |
| 1574 | ps->vliw_wait = r[in_resource]; |
| 1575 | } |
| 1576 | } |
| 1577 | |
| 1578 | /* Check the availability of the given float division resource and update |
| 1579 | the number of cycles the current VLIW insn must wait until it is available. |
| 1580 | */ |
| 1581 | void |
| 1582 | vliw_wait_for_fdiv_resource (SIM_CPU *cpu, INT in_resource) |
| 1583 | { |
| 1584 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1585 | int *r = ps->fdiv_busy; |
| 1586 | /* If the latency of the resource is greater than the current wait |
| 1587 | then update the current wait. */ |
| 1588 | if (r[in_resource] > ps->vliw_wait) |
| 1589 | { |
| 1590 | if (TRACE_INSN_P (cpu)) |
| 1591 | { |
| 1592 | sprintf (hazard_name, "Resource hazard for floating point division in slot F%d:", in_resource); |
| 1593 | } |
| 1594 | ps->vliw_wait = r[in_resource]; |
| 1595 | } |
| 1596 | } |
| 1597 | |
| 1598 | /* Check the availability of the given float square root resource and update |
| 1599 | the number of cycles the current VLIW insn must wait until it is available. |
| 1600 | */ |
| 1601 | void |
| 1602 | vliw_wait_for_fsqrt_resource (SIM_CPU *cpu, INT in_resource) |
| 1603 | { |
| 1604 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1605 | int *r = ps->fsqrt_busy; |
| 1606 | /* If the latency of the resource is greater than the current wait |
| 1607 | then update the current wait. */ |
| 1608 | if (r[in_resource] > ps->vliw_wait) |
| 1609 | { |
| 1610 | if (TRACE_INSN_P (cpu)) |
| 1611 | { |
| 1612 | sprintf (hazard_name, "Resource hazard for square root in slot F%d:", in_resource); |
| 1613 | } |
| 1614 | ps->vliw_wait = r[in_resource]; |
| 1615 | } |
| 1616 | } |
| 1617 | |
| 1618 | /* Check the availability of the given float unit resource and update |
| 1619 | the number of cycles the current VLIW insn must wait until it is available. |
| 1620 | */ |
| 1621 | void |
| 1622 | vliw_wait_for_float_resource (SIM_CPU *cpu, INT in_resource) |
| 1623 | { |
| 1624 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1625 | int *r = ps->float_busy; |
| 1626 | /* If the latency of the resource is greater than the current wait |
| 1627 | then update the current wait. */ |
| 1628 | if (r[in_resource] > ps->vliw_wait) |
| 1629 | { |
| 1630 | if (TRACE_INSN_P (cpu)) |
| 1631 | { |
| 1632 | sprintf (hazard_name, "Resource hazard for floating point unit in slot F%d:", in_resource); |
| 1633 | } |
| 1634 | ps->vliw_wait = r[in_resource]; |
| 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | /* Check the availability of the given media unit resource and update |
| 1639 | the number of cycles the current VLIW insn must wait until it is available. |
| 1640 | */ |
| 1641 | void |
| 1642 | vliw_wait_for_media_resource (SIM_CPU *cpu, INT in_resource) |
| 1643 | { |
| 1644 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1645 | int *r = ps->media_busy; |
| 1646 | /* If the latency of the resource is greater than the current wait |
| 1647 | then update the current wait. */ |
| 1648 | if (r[in_resource] > ps->vliw_wait) |
| 1649 | { |
| 1650 | if (TRACE_INSN_P (cpu)) |
| 1651 | { |
| 1652 | sprintf (hazard_name, "Resource hazard for media unit in slot M%d:", in_resource); |
| 1653 | } |
| 1654 | ps->vliw_wait = r[in_resource]; |
| 1655 | } |
| 1656 | } |
| 1657 | |
| 1658 | /* Run the caches until all requests for the given register(s) are satisfied. */ |
| 1659 | void |
| 1660 | load_wait_for_GR (SIM_CPU *cpu, INT in_GR) |
| 1661 | { |
| 1662 | if (in_GR >= 0) |
| 1663 | { |
| 1664 | int wait = 0; |
| 1665 | while (load_pending_for_register (cpu, in_GR, 1/*words*/, REGTYPE_NONE)) |
| 1666 | { |
| 1667 | frv_model_advance_cycles (cpu, 1); |
| 1668 | ++wait; |
| 1669 | } |
| 1670 | if (wait) |
| 1671 | { |
| 1672 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1673 | ps->vliw_wait += wait; |
| 1674 | ps->vliw_load_stall += wait; |
| 1675 | if (TRACE_INSN_P (cpu)) |
| 1676 | sprintf (hazard_name, "Data hazard for gr%d:", in_GR); |
| 1677 | } |
| 1678 | } |
| 1679 | } |
| 1680 | |
| 1681 | void |
| 1682 | load_wait_for_FR (SIM_CPU *cpu, INT in_FR) |
| 1683 | { |
| 1684 | if (in_FR >= 0) |
| 1685 | { |
| 1686 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1687 | int *fr; |
| 1688 | int wait = 0; |
| 1689 | while (load_pending_for_register (cpu, in_FR, 1/*words*/, REGTYPE_FR)) |
| 1690 | { |
| 1691 | frv_model_advance_cycles (cpu, 1); |
| 1692 | ++wait; |
| 1693 | } |
| 1694 | /* Post processing time may have been added to the register's |
| 1695 | latency after the loads were processed. Account for that too. |
| 1696 | */ |
| 1697 | fr = ps->fr_busy; |
| 1698 | if (fr[in_FR]) |
| 1699 | { |
| 1700 | wait += fr[in_FR]; |
| 1701 | frv_model_advance_cycles (cpu, fr[in_FR]); |
| 1702 | } |
| 1703 | /* Update the vliw_wait with the number of cycles we waited for the |
| 1704 | load and any post-processing. */ |
| 1705 | if (wait) |
| 1706 | { |
| 1707 | ps->vliw_wait += wait; |
| 1708 | ps->vliw_load_stall += wait; |
| 1709 | if (TRACE_INSN_P (cpu)) |
| 1710 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1711 | } |
| 1712 | } |
| 1713 | } |
| 1714 | |
| 1715 | void |
| 1716 | load_wait_for_GRdouble (SIM_CPU *cpu, INT in_GR) |
| 1717 | { |
| 1718 | if (in_GR >= 0) |
| 1719 | { |
| 1720 | int wait = 0; |
| 1721 | while (load_pending_for_register (cpu, in_GR, 2/*words*/, REGTYPE_NONE)) |
| 1722 | { |
| 1723 | frv_model_advance_cycles (cpu, 1); |
| 1724 | ++wait; |
| 1725 | } |
| 1726 | if (wait) |
| 1727 | { |
| 1728 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1729 | ps->vliw_wait += wait; |
| 1730 | ps->vliw_load_stall += wait; |
| 1731 | if (TRACE_INSN_P (cpu)) |
| 1732 | sprintf (hazard_name, "Data hazard for gr%d:", in_GR); |
| 1733 | } |
| 1734 | } |
| 1735 | } |
| 1736 | |
| 1737 | void |
| 1738 | load_wait_for_FRdouble (SIM_CPU *cpu, INT in_FR) |
| 1739 | { |
| 1740 | if (in_FR >= 0) |
| 1741 | { |
| 1742 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1743 | int *fr; |
| 1744 | int wait = 0; |
| 1745 | while (load_pending_for_register (cpu, in_FR, 2/*words*/, REGTYPE_FR)) |
| 1746 | { |
| 1747 | frv_model_advance_cycles (cpu, 1); |
| 1748 | ++wait; |
| 1749 | } |
| 1750 | /* Post processing time may have been added to the registers' |
| 1751 | latencies after the loads were processed. Account for that too. |
| 1752 | */ |
| 1753 | fr = ps->fr_busy; |
| 1754 | if (fr[in_FR]) |
| 1755 | { |
| 1756 | wait += fr[in_FR]; |
| 1757 | frv_model_advance_cycles (cpu, fr[in_FR]); |
| 1758 | } |
| 1759 | if (in_FR < 63) |
| 1760 | { |
| 1761 | if (fr[in_FR + 1]) |
| 1762 | { |
| 1763 | wait += fr[in_FR + 1]; |
| 1764 | frv_model_advance_cycles (cpu, fr[in_FR + 1]); |
| 1765 | } |
| 1766 | } |
| 1767 | /* Update the vliw_wait with the number of cycles we waited for the |
| 1768 | load and any post-processing. */ |
| 1769 | if (wait) |
| 1770 | { |
| 1771 | ps->vliw_wait += wait; |
| 1772 | ps->vliw_load_stall += wait; |
| 1773 | if (TRACE_INSN_P (cpu)) |
| 1774 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1775 | } |
| 1776 | } |
| 1777 | } |
| 1778 | |
| 1779 | void |
| 1780 | enforce_full_fr_latency (SIM_CPU *cpu, INT in_FR) |
| 1781 | { |
| 1782 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1783 | ps->fr_busy_adjust [in_FR] = -1; |
| 1784 | } |
| 1785 | |
| 1786 | /* Calculate how long the post processing for a floating point insn must |
| 1787 | wait for resources to become available. */ |
| 1788 | int |
| 1789 | post_wait_for_FR (SIM_CPU *cpu, INT in_FR) |
| 1790 | { |
| 1791 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1792 | int *fr = ps->fr_busy; |
| 1793 | |
| 1794 | if (in_FR >= 0 && fr[in_FR] > ps->post_wait) |
| 1795 | { |
| 1796 | ps->post_wait = fr[in_FR]; |
| 1797 | if (TRACE_INSN_P (cpu)) |
| 1798 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | /* Calculate how long the post processing for a floating point insn must |
| 1803 | wait for resources to become available. */ |
| 1804 | int |
| 1805 | post_wait_for_FRdouble (SIM_CPU *cpu, INT in_FR) |
| 1806 | { |
| 1807 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1808 | int *fr = ps->fr_busy; |
| 1809 | |
| 1810 | if (in_FR >= 0) |
| 1811 | { |
| 1812 | if (fr[in_FR] > ps->post_wait) |
| 1813 | { |
| 1814 | ps->post_wait = fr[in_FR]; |
| 1815 | if (TRACE_INSN_P (cpu)) |
| 1816 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR); |
| 1817 | } |
| 1818 | if (in_FR < 63 && fr[in_FR + 1] > ps->post_wait) |
| 1819 | { |
| 1820 | ps->post_wait = fr[in_FR + 1]; |
| 1821 | if (TRACE_INSN_P (cpu)) |
| 1822 | sprintf (hazard_name, "Data hazard for fr%d:", in_FR + 1); |
| 1823 | } |
| 1824 | } |
| 1825 | } |
| 1826 | |
| 1827 | int |
| 1828 | post_wait_for_ACC (SIM_CPU *cpu, INT in_ACC) |
| 1829 | { |
| 1830 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1831 | int *acc = ps->acc_busy; |
| 1832 | |
| 1833 | if (in_ACC >= 0 && acc[in_ACC] > ps->post_wait) |
| 1834 | { |
| 1835 | ps->post_wait = acc[in_ACC]; |
| 1836 | if (TRACE_INSN_P (cpu)) |
| 1837 | sprintf (hazard_name, "Data hazard for acc%d:", in_ACC); |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | int |
| 1842 | post_wait_for_CCR (SIM_CPU *cpu, INT in_CCR) |
| 1843 | { |
| 1844 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1845 | int *ccr = ps->ccr_busy; |
| 1846 | |
| 1847 | if (in_CCR >= 0 && ccr[in_CCR] > ps->post_wait) |
| 1848 | { |
| 1849 | ps->post_wait = ccr[in_CCR]; |
| 1850 | if (TRACE_INSN_P (cpu)) |
| 1851 | { |
| 1852 | if (in_CCR > 3) |
| 1853 | sprintf (hazard_name, "Data hazard for icc%d:", in_CCR - 4); |
| 1854 | else |
| 1855 | sprintf (hazard_name, "Data hazard for fcc%d:", in_CCR); |
| 1856 | } |
| 1857 | } |
| 1858 | } |
| 1859 | |
| 1860 | int |
| 1861 | post_wait_for_SPR (SIM_CPU *cpu, INT in_SPR) |
| 1862 | { |
| 1863 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1864 | int *spr = ps->spr_busy; |
| 1865 | |
| 1866 | if (in_SPR >= 0 && spr[in_SPR] > ps->post_wait) |
| 1867 | { |
| 1868 | ps->post_wait = spr[in_SPR]; |
| 1869 | if (TRACE_INSN_P (cpu)) |
| 1870 | sprintf (hazard_name, "Data hazard for spr[%d]:", in_SPR); |
| 1871 | } |
| 1872 | } |
| 1873 | |
| 1874 | int |
| 1875 | post_wait_for_fdiv (SIM_CPU *cpu, INT slot) |
| 1876 | { |
| 1877 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1878 | int *fdiv = ps->fdiv_busy; |
| 1879 | |
| 1880 | /* Multiple floating point divisions in the same slot need only wait 1 |
| 1881 | extra cycle. */ |
| 1882 | if (fdiv[slot] > 0 && 1 > ps->post_wait) |
| 1883 | { |
| 1884 | ps->post_wait = 1; |
| 1885 | if (TRACE_INSN_P (cpu)) |
| 1886 | { |
| 1887 | sprintf (hazard_name, "Resource hazard for floating point division in slot F%d:", slot); |
| 1888 | } |
| 1889 | } |
| 1890 | } |
| 1891 | |
| 1892 | int |
| 1893 | post_wait_for_fsqrt (SIM_CPU *cpu, INT slot) |
| 1894 | { |
| 1895 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1896 | int *fsqrt = ps->fsqrt_busy; |
| 1897 | |
| 1898 | /* Multiple floating point square roots in the same slot need only wait 1 |
| 1899 | extra cycle. */ |
| 1900 | if (fsqrt[slot] > 0 && 1 > ps->post_wait) |
| 1901 | { |
| 1902 | ps->post_wait = 1; |
| 1903 | if (TRACE_INSN_P (cpu)) |
| 1904 | { |
| 1905 | sprintf (hazard_name, "Resource hazard for square root in slot F%d:", slot); |
| 1906 | } |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | int |
| 1911 | post_wait_for_float (SIM_CPU *cpu, INT slot) |
| 1912 | { |
| 1913 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1914 | int *flt = ps->float_busy; |
| 1915 | |
| 1916 | /* Multiple floating point square roots in the same slot need only wait 1 |
| 1917 | extra cycle. */ |
| 1918 | if (flt[slot] > ps->post_wait) |
| 1919 | { |
| 1920 | ps->post_wait = flt[slot]; |
| 1921 | if (TRACE_INSN_P (cpu)) |
| 1922 | { |
| 1923 | sprintf (hazard_name, "Resource hazard for floating point unit in slot F%d:", slot); |
| 1924 | } |
| 1925 | } |
| 1926 | } |
| 1927 | |
| 1928 | int |
| 1929 | post_wait_for_media (SIM_CPU *cpu, INT slot) |
| 1930 | { |
| 1931 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1932 | int *media = ps->media_busy; |
| 1933 | |
| 1934 | /* Multiple floating point square roots in the same slot need only wait 1 |
| 1935 | extra cycle. */ |
| 1936 | if (media[slot] > ps->post_wait) |
| 1937 | { |
| 1938 | ps->post_wait = media[slot]; |
| 1939 | if (TRACE_INSN_P (cpu)) |
| 1940 | { |
| 1941 | sprintf (hazard_name, "Resource hazard for media unit in slot M%d:", slot); |
| 1942 | } |
| 1943 | } |
| 1944 | } |
| 1945 | |
| 1946 | /* Print cpu-specific profile information. */ |
| 1947 | #define COMMAS(n) sim_add_commas (comma_buf, sizeof (comma_buf), (n)) |
| 1948 | |
| 1949 | static void |
| 1950 | print_cache (SIM_CPU *cpu, FRV_CACHE *cache, const char *cache_name) |
| 1951 | { |
| 1952 | SIM_DESC sd = CPU_STATE (cpu); |
| 1953 | |
| 1954 | if (cache != NULL) |
| 1955 | { |
| 1956 | char comma_buf[20]; |
| 1957 | unsigned accesses; |
| 1958 | |
| 1959 | sim_io_printf (sd, " %s Cache\n\n", cache_name); |
| 1960 | accesses = cache->statistics.accesses; |
| 1961 | sim_io_printf (sd, " Total accesses: %s\n", COMMAS (accesses)); |
| 1962 | if (accesses != 0) |
| 1963 | { |
| 1964 | float rate; |
| 1965 | unsigned hits = cache->statistics.hits; |
| 1966 | sim_io_printf (sd, " Hits: %s\n", COMMAS (hits)); |
| 1967 | rate = (float)hits / accesses; |
| 1968 | sim_io_printf (sd, " Hit rate: %.2f%%\n", rate * 100); |
| 1969 | } |
| 1970 | } |
| 1971 | else |
| 1972 | sim_io_printf (sd, " Model %s has no %s cache\n", |
| 1973 | MODEL_NAME (CPU_MODEL (cpu)), cache_name); |
| 1974 | |
| 1975 | sim_io_printf (sd, "\n"); |
| 1976 | } |
| 1977 | |
| 1978 | /* This table must correspond to the UNIT_ATTR table in |
| 1979 | opcodes/frv-desc.h. Only the units up to UNIT_C need be |
| 1980 | listed since the others cannot occur after mapping. */ |
| 1981 | static char * |
| 1982 | slot_names[] = |
| 1983 | { |
| 1984 | "none", |
| 1985 | "I0", "I1", "I01", "I2", "I3", "IALL", |
| 1986 | "FM0", "FM1", "FM01", "FM2", "FM3", "FMALL", "FMLOW", |
| 1987 | "B0", "B1", "B01", |
| 1988 | "C" |
| 1989 | }; |
| 1990 | |
| 1991 | static void |
| 1992 | print_parallel (SIM_CPU *cpu, int verbose) |
| 1993 | { |
| 1994 | SIM_DESC sd = CPU_STATE (cpu); |
| 1995 | PROFILE_DATA *p = CPU_PROFILE_DATA (cpu); |
| 1996 | FRV_PROFILE_STATE *ps = CPU_PROFILE_STATE (cpu); |
| 1997 | unsigned total, vliw; |
| 1998 | char comma_buf[20]; |
| 1999 | float average; |
| 2000 | |
| 2001 | sim_io_printf (sd, "Model %s Parallelization\n\n", |
| 2002 | MODEL_NAME (CPU_MODEL (cpu))); |
| 2003 | |
| 2004 | total = PROFILE_TOTAL_INSN_COUNT (p); |
| 2005 | sim_io_printf (sd, " Total instructions: %s\n", COMMAS (total)); |
| 2006 | vliw = ps->vliw_insns; |
| 2007 | sim_io_printf (sd, " VLIW instructions: %s\n", COMMAS (vliw)); |
| 2008 | average = (float)total / vliw; |
| 2009 | sim_io_printf (sd, " Average VLIW length: %.2f\n", average); |
| 2010 | average = (float)PROFILE_MODEL_TOTAL_CYCLES (p) / vliw; |
| 2011 | sim_io_printf (sd, " Cycles per VLIW instruction: %.2f\n", average); |
| 2012 | average = (float)total / PROFILE_MODEL_TOTAL_CYCLES (p); |
| 2013 | sim_io_printf (sd, " Instructions per cycle: %.2f\n", average); |
| 2014 | |
| 2015 | if (verbose) |
| 2016 | { |
| 2017 | int i; |
| 2018 | int max_val = 0; |
| 2019 | int max_name_len = 0; |
| 2020 | for (i = UNIT_NIL + 1; i < UNIT_NUM_UNITS; ++i) |
| 2021 | { |
| 2022 | if (INSNS_IN_SLOT (i)) |
| 2023 | { |
| 2024 | int len; |
| 2025 | if (INSNS_IN_SLOT (i) > max_val) |
| 2026 | max_val = INSNS_IN_SLOT (i); |
| 2027 | len = strlen (slot_names[i]); |
| 2028 | if (len > max_name_len) |
| 2029 | max_name_len = len; |
| 2030 | } |
| 2031 | } |
| 2032 | if (max_val > 0) |
| 2033 | { |
| 2034 | sim_io_printf (sd, "\n"); |
| 2035 | sim_io_printf (sd, " Instructions per slot:\n"); |
| 2036 | sim_io_printf (sd, "\n"); |
| 2037 | for (i = UNIT_NIL + 1; i < UNIT_NUM_UNITS; ++i) |
| 2038 | { |
| 2039 | if (INSNS_IN_SLOT (i) != 0) |
| 2040 | { |
| 2041 | sim_io_printf (sd, " %*s: %*s: ", |
| 2042 | max_name_len, slot_names[i], |
| 2043 | max_val < 10000 ? 5 : 10, |
| 2044 | COMMAS (INSNS_IN_SLOT (i))); |
| 2045 | sim_profile_print_bar (sd, PROFILE_HISTOGRAM_WIDTH, |
| 2046 | INSNS_IN_SLOT (i), |
| 2047 | max_val); |
| 2048 | sim_io_printf (sd, "\n"); |
| 2049 | } |
| 2050 | } |
| 2051 | } /* details to print */ |
| 2052 | } /* verbose */ |
| 2053 | |
| 2054 | sim_io_printf (sd, "\n"); |
| 2055 | } |
| 2056 | |
| 2057 | void |
| 2058 | frv_profile_info (SIM_CPU *cpu, int verbose) |
| 2059 | { |
| 2060 | /* FIXME: Need to add smp support. */ |
| 2061 | PROFILE_DATA *p = CPU_PROFILE_DATA (cpu); |
| 2062 | |
| 2063 | #if WITH_PROFILE_PARALLEL_P |
| 2064 | if (PROFILE_FLAGS (p) [PROFILE_PARALLEL_IDX]) |
| 2065 | print_parallel (cpu, verbose); |
| 2066 | #endif |
| 2067 | |
| 2068 | #if WITH_PROFILE_CACHE_P |
| 2069 | if (PROFILE_FLAGS (p) [PROFILE_CACHE_IDX]) |
| 2070 | { |
| 2071 | SIM_DESC sd = CPU_STATE (cpu); |
| 2072 | sim_io_printf (sd, "Model %s Cache Statistics\n\n", |
| 2073 | MODEL_NAME (CPU_MODEL (cpu))); |
| 2074 | print_cache (cpu, CPU_INSN_CACHE (cpu), "Instruction"); |
| 2075 | print_cache (cpu, CPU_DATA_CACHE (cpu), "Data"); |
| 2076 | } |
| 2077 | #endif /* WITH_PROFILE_CACHE_P */ |
| 2078 | } |
| 2079 | |
| 2080 | /* A hack to get registers referenced for profiling. */ |
| 2081 | SI frv_ref_SI (SI ref) {return ref;} |
| 2082 | #endif /* WITH_PROFILE_MODEL_P */ |