| 1 | /* |
| 2 | * Copyright (C) 2012-2022 Free Software Foundation, Inc. |
| 3 | * |
| 4 | * This file is part of GNU lightning. |
| 5 | * |
| 6 | * GNU lightning is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU Lesser General Public License as published |
| 8 | * by the Free Software Foundation; either version 3, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | * GNU lightning is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 14 | * License for more details. |
| 15 | * |
| 16 | * Authors: |
| 17 | * Paulo Cesar Pereira de Andrade |
| 18 | */ |
| 19 | |
| 20 | #include <lightning.h> |
| 21 | #include <lightning/jit_private.h> |
| 22 | #if HAVE_MMAP |
| 23 | # include <sys/mman.h> |
| 24 | #endif |
| 25 | #if defined(__sgi) |
| 26 | # include <fcntl.h> |
| 27 | #endif |
| 28 | |
| 29 | #ifndef MAP_ANON |
| 30 | # define MAP_ANON MAP_ANONYMOUS |
| 31 | # ifndef MAP_ANONYMOUS |
| 32 | # define MAP_ANONYMOUS 0 |
| 33 | # endif |
| 34 | #endif |
| 35 | |
| 36 | #define jit_regload_reload 0 /* convert to reload */ |
| 37 | #define jit_regload_delete 1 /* just remove node */ |
| 38 | #define jit_regload_isdead 2 /* delete and unset live bit */ |
| 39 | |
| 40 | /* |
| 41 | * Prototypes |
| 42 | */ |
| 43 | static jit_word_t hash_data(const void*, jit_word_t); |
| 44 | |
| 45 | #define new_pool() _new_pool(_jit) |
| 46 | static void _new_pool(jit_state_t*); |
| 47 | |
| 48 | #define new_node(u) _new_node(_jit, u) |
| 49 | static jit_node_t *_new_node(jit_state_t*, jit_code_t); |
| 50 | |
| 51 | #define link_node(u) _link_node(_jit, u) |
| 52 | static inline jit_node_t *_link_node(jit_state_t*, jit_node_t*); |
| 53 | |
| 54 | #define del_node(u, v) _del_node(_jit, u, v) |
| 55 | static inline void _del_node(jit_state_t*, jit_node_t*, jit_node_t*); |
| 56 | |
| 57 | #define free_node(u) _free_node(_jit, u) |
| 58 | static inline void _free_node(jit_state_t*, jit_node_t*); |
| 59 | |
| 60 | #define del_label(u, v) _del_label(_jit, u, v) |
| 61 | static void _del_label(jit_state_t*, jit_node_t*, jit_node_t*); |
| 62 | |
| 63 | #define jit_dataset() _jit_dataset(_jit) |
| 64 | static void |
| 65 | _jit_dataset(jit_state_t *_jit); |
| 66 | |
| 67 | #define block_update_set(block, target) _block_update_set(_jit, block, target) |
| 68 | static jit_bool_t _block_update_set(jit_state_t*, jit_block_t*, jit_block_t*); |
| 69 | |
| 70 | #define check_block_again() _check_block_again(_jit) |
| 71 | static jit_bool_t _check_block_again(jit_state_t*); |
| 72 | |
| 73 | #define do_setup() _do_setup(_jit) |
| 74 | static void _do_setup(jit_state_t*); |
| 75 | |
| 76 | #define jit_setup(block) _jit_setup(_jit, block) |
| 77 | static void |
| 78 | _jit_setup(jit_state_t *_jit, jit_block_t *block); |
| 79 | |
| 80 | #define do_follow(always) _do_follow(_jit, always) |
| 81 | static void _do_follow(jit_state_t*, jit_bool_t); |
| 82 | |
| 83 | #define jit_follow(block) _jit_follow(_jit, block) |
| 84 | static void |
| 85 | _jit_follow(jit_state_t *_jit, jit_block_t *block); |
| 86 | |
| 87 | #define jit_update(node, live, mask) _jit_update(_jit, node, live, mask) |
| 88 | static void |
| 89 | _jit_update(jit_state_t *_jit, jit_node_t *node, |
| 90 | jit_regset_t *live, jit_regset_t *mask); |
| 91 | |
| 92 | #define thread_jumps() _thread_jumps(_jit) |
| 93 | static void |
| 94 | _thread_jumps(jit_state_t *_jit); |
| 95 | |
| 96 | #define sequential_labels() _sequential_labels(_jit) |
| 97 | static void |
| 98 | _sequential_labels(jit_state_t *_jit); |
| 99 | |
| 100 | #define split_branches() _split_branches(_jit) |
| 101 | static void |
| 102 | _split_branches(jit_state_t *_jit); |
| 103 | |
| 104 | #define shortcut_jump(prev, node) _shortcut_jump(_jit, prev, node) |
| 105 | static jit_bool_t |
| 106 | _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node); |
| 107 | |
| 108 | #define redundant_jump(prev, node) _redundant_jump(_jit, prev, node) |
| 109 | static jit_bool_t |
| 110 | _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node); |
| 111 | |
| 112 | static jit_code_t |
| 113 | reverse_jump_code(jit_code_t code); |
| 114 | |
| 115 | #define reverse_jump(prev, node) _reverse_jump(_jit, prev, node) |
| 116 | static jit_bool_t |
| 117 | _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node); |
| 118 | |
| 119 | #define redundant_store(node, jump) _redundant_store(_jit, node, jump) |
| 120 | static jit_bool_t |
| 121 | _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump); |
| 122 | |
| 123 | #define simplify_movr(p, n, k, s) _simplify_movr(_jit, p, n, k, s) |
| 124 | static jit_bool_t |
| 125 | _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node, |
| 126 | jit_int32_t kind, jit_int32_t size); |
| 127 | |
| 128 | #define simplify_movi(p, n, k, s) _simplify_movi(_jit, p, n, k, s) |
| 129 | static jit_bool_t |
| 130 | _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node, |
| 131 | jit_int32_t kind, jit_int32_t size); |
| 132 | |
| 133 | #define simplify_ldxi(prev, node) _simplify_ldxi(_jit, prev, node) |
| 134 | static jit_bool_t |
| 135 | _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node); |
| 136 | |
| 137 | #define simplify_stxi(prev, node) _simplify_stxi(_jit, prev, node) |
| 138 | static jit_bool_t |
| 139 | _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node); |
| 140 | |
| 141 | #define simplify_spill(node, regno) _simplify_spill(_jit, node, regno) |
| 142 | static void |
| 143 | _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno); |
| 144 | |
| 145 | #define simplify() _simplify(_jit) |
| 146 | static jit_bool_t |
| 147 | _simplify(jit_state_t *_jit); |
| 148 | |
| 149 | #define jit_reg_undef -1 |
| 150 | #define jit_reg_static 0 |
| 151 | #define jit_reg_change 1 |
| 152 | #define register_change_p(n, l, r) _register_change_p(_jit, n, l, r) |
| 153 | static jit_int32_t |
| 154 | _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link, |
| 155 | jit_int32_t regno); |
| 156 | |
| 157 | #define spill_reglive_p(node, regno) _spill_reglive_p(_jit, node, regno) |
| 158 | static jit_bool_t |
| 159 | _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno); |
| 160 | |
| 161 | #define patch_registers() _patch_registers(_jit) |
| 162 | static void |
| 163 | _patch_registers(jit_state_t *_jit); |
| 164 | |
| 165 | #define patch_register(n,l,r,p) _patch_register(_jit,n,l,r,p) |
| 166 | static void |
| 167 | _patch_register(jit_state_t *jit, jit_node_t *node, jit_node_t *link, |
| 168 | jit_int32_t regno, jit_int32_t patch); |
| 169 | |
| 170 | /* |
| 171 | * Initialization |
| 172 | */ |
| 173 | #if !defined(__sgi) |
| 174 | #define mmap_fd -1 |
| 175 | #endif |
| 176 | |
| 177 | /* |
| 178 | * Implementation |
| 179 | */ |
| 180 | void |
| 181 | init_jit(const char *progname) |
| 182 | { |
| 183 | jit_get_cpu(); |
| 184 | jit_init_debug(progname); |
| 185 | jit_init_size(); |
| 186 | } |
| 187 | |
| 188 | void |
| 189 | finish_jit(void) |
| 190 | { |
| 191 | jit_finish_debug(); |
| 192 | jit_finish_size(); |
| 193 | } |
| 194 | |
| 195 | jit_int32_t |
| 196 | _jit_get_reg(jit_state_t *_jit, jit_int32_t regspec) |
| 197 | { |
| 198 | jit_int32_t spec; |
| 199 | jit_int32_t regno; |
| 200 | |
| 201 | spec = regspec & ~(jit_class_chk|jit_class_nospill); |
| 202 | if (spec & jit_class_named) { |
| 203 | regno = jit_regno(spec); |
| 204 | if (jit_regset_tstbit(&_jitc->regsav, regno)) |
| 205 | /* fail if register is spilled */ |
| 206 | goto fail; |
| 207 | if (jit_regset_tstbit(&_jitc->regarg, regno)) |
| 208 | /* fail if register is an argument to current instruction */ |
| 209 | goto fail; |
| 210 | if (jit_regset_tstbit(&_jitc->reglive, regno)) { |
| 211 | if (regspec & jit_class_nospill) |
| 212 | /* fail if register is live and should not spill/reload */ |
| 213 | goto fail; |
| 214 | goto spill; |
| 215 | } |
| 216 | jit_regset_setbit(&_jitc->regarg, regno); |
| 217 | return (regno); |
| 218 | } |
| 219 | else |
| 220 | assert(jit_class(spec) != 0); |
| 221 | |
| 222 | if (_jitc->emit) { |
| 223 | /* search for a free register matching spec */ |
| 224 | for (regno = 0; regno < _jitc->reglen; regno++) { |
| 225 | if ((jit_class(_rvs[regno].spec) & spec) == spec && |
| 226 | !jit_regset_tstbit(&_jitc->regarg, regno) && |
| 227 | !jit_regset_tstbit(&_jitc->reglive, regno)) |
| 228 | goto regarg; |
| 229 | } |
| 230 | |
| 231 | /* search for a register matching spec that is not an argument |
| 232 | * for the current instruction */ |
| 233 | for (regno = 0; regno < _jitc->reglen; regno++) { |
| 234 | if ((jit_class(_rvs[regno].spec) & spec) == spec && |
| 235 | !jit_regset_tstbit(&_jitc->regsav, regno) && |
| 236 | !jit_regset_tstbit(&_jitc->regarg, regno) && |
| 237 | !(regspec & jit_class_nospill)) { |
| 238 | spill: |
| 239 | assert(_jitc->function != NULL); |
| 240 | if (spec & jit_class_gpr) { |
| 241 | if (!_jitc->function->regoff[regno]) { |
| 242 | _jitc->function->regoff[regno] = |
| 243 | jit_allocai(sizeof(jit_word_t)); |
| 244 | _jitc->again = 1; |
| 245 | } |
| 246 | #if DEBUG |
| 247 | /* emit_stxi must not need temporary registers */ |
| 248 | assert(!_jitc->getreg); |
| 249 | _jitc->getreg = 1; |
| 250 | #endif |
| 251 | emit_stxi(_jitc->function->regoff[regno], JIT_FP, regno); |
| 252 | #if DEBUG |
| 253 | _jitc->getreg = 0; |
| 254 | #endif |
| 255 | } |
| 256 | else { |
| 257 | if (!_jitc->function->regoff[regno]) { |
| 258 | _jitc->function->regoff[regno] = |
| 259 | jit_allocai(sizeof(jit_float64_t)); |
| 260 | _jitc->again = 1; |
| 261 | } |
| 262 | #if DEBUG |
| 263 | /* emit_stxi must not need temporary registers */ |
| 264 | assert(!_jitc->getreg); |
| 265 | _jitc->getreg = 1; |
| 266 | #endif |
| 267 | emit_stxi_d(_jitc->function->regoff[regno], JIT_FP, regno); |
| 268 | #if DEBUG |
| 269 | _jitc->getreg = 0; |
| 270 | #endif |
| 271 | } |
| 272 | jit_regset_setbit(&_jitc->regsav, regno); |
| 273 | regarg: |
| 274 | jit_regset_setbit(&_jitc->regarg, regno); |
| 275 | if (jit_class(_rvs[regno].spec) & jit_class_sav) { |
| 276 | /* if will modify callee save registers without a |
| 277 | * function prolog, better patch this assertion */ |
| 278 | assert(_jitc->function != NULL); |
| 279 | if (!jit_regset_tstbit(&_jitc->function->regset, regno)) { |
| 280 | jit_regset_setbit(&_jitc->function->regset, regno); |
| 281 | _jitc->again = 1; |
| 282 | } |
| 283 | } |
| 284 | return (regno); |
| 285 | } |
| 286 | } |
| 287 | } |
| 288 | else { |
| 289 | /* nospill hint only valid during emit" */ |
| 290 | assert(!(regspec & jit_class_nospill)); |
| 291 | for (regno = 0; regno < _jitc->reglen; regno++) { |
| 292 | if ((jit_class(_rvs[regno].spec) & spec) == spec && |
| 293 | !jit_regset_tstbit(&_jitc->regsav, regno) && |
| 294 | !jit_regset_tstbit(&_jitc->regarg, regno)) { |
| 295 | jit_regset_setbit(&_jitc->regarg, regno); |
| 296 | jit_regset_setbit(&_jitc->regsav, regno); |
| 297 | jit_save(regno); |
| 298 | return (jit_regno_patch|regno); |
| 299 | } |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | /* Out of hardware registers */ |
| 304 | fail: |
| 305 | assert(regspec & jit_class_chk); |
| 306 | return (JIT_NOREG); |
| 307 | } |
| 308 | |
| 309 | void |
| 310 | _jit_unget_reg(jit_state_t *_jit, jit_int32_t regno) |
| 311 | { |
| 312 | regno = jit_regno(regno); |
| 313 | if (jit_regset_tstbit(&_jitc->regsav, regno)) { |
| 314 | if (_jitc->emit) { |
| 315 | #if DEBUG |
| 316 | /* emit_ldxi must not need a temporary register */ |
| 317 | assert(!_jitc->getreg); |
| 318 | _jitc->getreg = 1; |
| 319 | #endif |
| 320 | if (jit_class(_rvs[regno].spec) & jit_class_gpr) |
| 321 | emit_ldxi(regno, JIT_FP, _jitc->function->regoff[regno]); |
| 322 | else |
| 323 | emit_ldxi_d(regno, JIT_FP, _jitc->function->regoff[regno]); |
| 324 | #if DEBUG |
| 325 | /* emit_ldxi must not need a temporary register */ |
| 326 | _jitc->getreg = 0; |
| 327 | #endif |
| 328 | } |
| 329 | else |
| 330 | jit_load(regno); |
| 331 | jit_regset_clrbit(&_jitc->regsav, regno); |
| 332 | } |
| 333 | #if defined(jit_carry) |
| 334 | assert((regno == jit_carry /*&& _NOREG != jit_carry*/) || |
| 335 | jit_regset_tstbit(&_jitc->regarg, regno) != 0); |
| 336 | #else |
| 337 | assert(jit_regset_tstbit(&_jitc->regarg, regno) != 0); |
| 338 | #endif |
| 339 | jit_regset_clrbit(&_jitc->regarg, regno); |
| 340 | } |
| 341 | |
| 342 | jit_bool_t |
| 343 | _jit_callee_save_p(jit_state_t *_jit, jit_int32_t regno) |
| 344 | { |
| 345 | assert(regno >= 0 && regno < JIT_NOREG); |
| 346 | return (!!(_rvs[regno].spec & jit_class_sav)); |
| 347 | } |
| 348 | |
| 349 | extern jit_bool_t |
| 350 | _jit_pointer_p(jit_state_t *_jit, jit_pointer_t address) |
| 351 | { |
| 352 | return ((jit_uint8_t *)address >= _jit->code.ptr && |
| 353 | (jit_word_t)address < _jit->pc.w); |
| 354 | } |
| 355 | |
| 356 | #if __ia64__ |
| 357 | void |
| 358 | jit_regset_com(jit_regset_t *u, jit_regset_t *v) |
| 359 | { |
| 360 | u->rl = ~v->rl; u->rh = ~v->rh; |
| 361 | u->fl = ~v->fl; u->fh = ~v->fh; |
| 362 | } |
| 363 | |
| 364 | void |
| 365 | jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 366 | { |
| 367 | u->rl = v->rl & w->rl; u->rh = v->rh & w->rh; |
| 368 | u->fl = v->fl & w->fl; u->fh = v->fh & w->fh; |
| 369 | } |
| 370 | |
| 371 | void |
| 372 | jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 373 | { |
| 374 | u->rl = v->rl | w->rl; u->rh = v->rh | w->rh; |
| 375 | u->fl = v->fl | w->fl; u->fh = v->fh | w->fh; |
| 376 | } |
| 377 | |
| 378 | void |
| 379 | jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 380 | { |
| 381 | u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh; |
| 382 | u->fl = v->fl ^ w->fl; u->fh = v->fh ^ w->fh; |
| 383 | } |
| 384 | |
| 385 | void |
| 386 | jit_regset_set(jit_regset_t *u, jit_regset_t *v) |
| 387 | { |
| 388 | u->rl = v->rl; u->rh = v->rh; |
| 389 | u->fl = v->fl; u->fh = v->fh; |
| 390 | } |
| 391 | |
| 392 | void |
| 393 | jit_regset_set_mask(jit_regset_t *u, jit_int32_t v) |
| 394 | { |
| 395 | jit_bool_t w = !!(v & (v - 1)); |
| 396 | |
| 397 | assert(v >= 0 && v <= 256); |
| 398 | if (v == 0) |
| 399 | u->rl = u->rh = u->fl = u->fh = -1LL; |
| 400 | else if (v <= 64) { |
| 401 | u->rl = w ? (1LL << v) - 1 : -1LL; |
| 402 | u->rh = u->fl = u->fh = 0; |
| 403 | } |
| 404 | else if (v <= 128) { |
| 405 | u->rl = -1LL; |
| 406 | u->rh = w ? (1LL << (v - 64)) - 1 : -1LL; |
| 407 | u->fl = u->fh = 0; |
| 408 | } |
| 409 | else if (v <= 192) { |
| 410 | u->rl = u->rh = -1LL; |
| 411 | u->fl = w ? (1LL << (v - 128)) - 1 : -1LL; |
| 412 | u->fh = 0; |
| 413 | } |
| 414 | else { |
| 415 | u->rl = u->rh = u->fl = -1LL; |
| 416 | u->fh = w ? (1LL << (v - 128)) - 1 : -1LL; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | jit_bool_t |
| 421 | jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v) |
| 422 | { |
| 423 | return !((u->rl == v && u->rh == 0 && u->fl == 0 && u->fh == 0)); |
| 424 | } |
| 425 | |
| 426 | void |
| 427 | jit_regset_set_ui(jit_regset_t *u, jit_word_t v) |
| 428 | { |
| 429 | u->rl = v; |
| 430 | u->rh = u->fl = u->fh = 0; |
| 431 | } |
| 432 | |
| 433 | jit_bool_t |
| 434 | jit_regset_set_p(jit_regset_t *u) |
| 435 | { |
| 436 | return (u->rl || u->rh || u->fl || u->fh); |
| 437 | } |
| 438 | |
| 439 | void |
| 440 | jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit) |
| 441 | { |
| 442 | assert(bit >= 0 && bit <= 255); |
| 443 | if (bit < 64) |
| 444 | set->rl &= ~(1LL << bit); |
| 445 | else if (bit < 128) |
| 446 | set->rh &= ~(1LL << (bit - 64)); |
| 447 | else if (bit < 192) |
| 448 | set->fl &= ~(1LL << (bit - 128)); |
| 449 | else |
| 450 | set->fh &= ~(1LL << (bit - 192)); |
| 451 | } |
| 452 | |
| 453 | void |
| 454 | jit_regset_setbit(jit_regset_t *set, jit_int32_t bit) |
| 455 | { |
| 456 | assert(bit >= 0 && bit <= 255); |
| 457 | if (bit < 64) |
| 458 | set->rl |= 1LL << bit; |
| 459 | else if (bit < 128) |
| 460 | set->rh |= 1LL << (bit - 64); |
| 461 | else if (bit < 192) |
| 462 | set->fl |= 1LL << (bit - 128); |
| 463 | else |
| 464 | set->fh |= 1LL << (bit - 192); |
| 465 | } |
| 466 | |
| 467 | jit_bool_t |
| 468 | jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit) |
| 469 | { |
| 470 | assert(bit >= 0 && bit <= 255); |
| 471 | if (bit < 64) |
| 472 | return (!!(set->rl & (1LL << bit))); |
| 473 | else if (bit < 128) |
| 474 | return (!!(set->rh & (1LL << (bit - 64)))); |
| 475 | else if (bit < 192) |
| 476 | return (!!(set->fl & (1LL << (bit - 128)))); |
| 477 | return (!!(set->fh & (1LL << (bit - 192)))); |
| 478 | } |
| 479 | |
| 480 | unsigned long |
| 481 | jit_regset_scan1(jit_regset_t *set, jit_int32_t offset) |
| 482 | { |
| 483 | assert(offset >= 0 && offset <= 255); |
| 484 | for (; offset < 64; offset++) { |
| 485 | if (set->rl & (1LL << offset)) |
| 486 | return (offset); |
| 487 | } |
| 488 | for (; offset < 128; offset++) { |
| 489 | if (set->rh & (1LL << (offset - 64))) |
| 490 | return (offset); |
| 491 | } |
| 492 | for (; offset < 192; offset++) { |
| 493 | if (set->fl & (1LL << (offset - 128))) |
| 494 | return (offset); |
| 495 | } |
| 496 | for (; offset < 256; offset++) { |
| 497 | if (set->fh & (1LL << (offset - 192))) |
| 498 | return (offset); |
| 499 | } |
| 500 | return (ULONG_MAX); |
| 501 | } |
| 502 | |
| 503 | #elif __sparc__ && __WORDSIZE == 64 |
| 504 | void |
| 505 | jit_regset_com(jit_regset_t *u, jit_regset_t *v) |
| 506 | { |
| 507 | u->rl = ~v->rl; u->rh = ~v->rh; |
| 508 | } |
| 509 | |
| 510 | void |
| 511 | jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 512 | { |
| 513 | u->rl = v->rl & w->rl; u->rh = v->rh & w->rh; |
| 514 | } |
| 515 | |
| 516 | void |
| 517 | jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 518 | { |
| 519 | u->rl = v->rl | w->rl; u->rh = v->rh | w->rh; |
| 520 | } |
| 521 | |
| 522 | void |
| 523 | jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w) |
| 524 | { |
| 525 | u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh; |
| 526 | } |
| 527 | |
| 528 | void |
| 529 | jit_regset_set(jit_regset_t *u, jit_regset_t *v) |
| 530 | { |
| 531 | u->rl = v->rl; u->rh = v->rh; |
| 532 | } |
| 533 | |
| 534 | void |
| 535 | jit_regset_set_mask(jit_regset_t *u, jit_int32_t v) |
| 536 | { |
| 537 | jit_bool_t w = !!(v & (v - 1)); |
| 538 | |
| 539 | assert(v >= 0 && v <= 128); |
| 540 | if (v == 0) |
| 541 | u->rl = u->rh = -1LL; |
| 542 | else if (v <= 64) { |
| 543 | u->rl = w ? (1LL << v) - 1 : -1LL; |
| 544 | u->rh = 0; |
| 545 | } |
| 546 | else { |
| 547 | u->rl = -1LL; |
| 548 | u->rh = w ? (1LL << (v - 64)) - 1 : -1LL; |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | jit_bool_t |
| 553 | jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v) |
| 554 | { |
| 555 | return !((u->rl == v && u->rh == 0)); |
| 556 | } |
| 557 | |
| 558 | void |
| 559 | jit_regset_set_ui(jit_regset_t *u, jit_word_t v) |
| 560 | { |
| 561 | u->rl = v; |
| 562 | u->rh = 0; |
| 563 | } |
| 564 | |
| 565 | jit_bool_t |
| 566 | jit_regset_set_p(jit_regset_t *u) |
| 567 | { |
| 568 | return (u->rl || u->rh); |
| 569 | } |
| 570 | |
| 571 | void |
| 572 | jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit) |
| 573 | { |
| 574 | assert(bit >= 0 && bit <= 128); |
| 575 | if (bit < 64) |
| 576 | set->rl &= ~(1LL << bit); |
| 577 | else |
| 578 | set->rh &= ~(1LL << (bit - 64)); |
| 579 | } |
| 580 | |
| 581 | void |
| 582 | jit_regset_setbit(jit_regset_t *set, jit_int32_t bit) |
| 583 | { |
| 584 | assert(bit >= 0 && bit <= 127); |
| 585 | if (bit < 64) |
| 586 | set->rl |= 1LL << bit; |
| 587 | else |
| 588 | set->rh |= 1LL << (bit - 64); |
| 589 | } |
| 590 | |
| 591 | jit_bool_t |
| 592 | jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit) |
| 593 | { |
| 594 | assert(bit >= 0 && bit <= 127); |
| 595 | if (bit < 64) |
| 596 | return (!!(set->rl & (1LL << bit))); |
| 597 | else |
| 598 | return (!!(set->rh & (1LL << (bit - 64)))); |
| 599 | } |
| 600 | |
| 601 | unsigned long |
| 602 | jit_regset_scan1(jit_regset_t *set, jit_int32_t offset) |
| 603 | { |
| 604 | assert(offset >= 0 && offset <= 127); |
| 605 | for (; offset < 64; offset++) { |
| 606 | if (set->rl & (1LL << offset)) |
| 607 | return (offset); |
| 608 | } |
| 609 | for (; offset < 128; offset++) { |
| 610 | if (set->rh & (1LL << (offset - 64))) |
| 611 | return (offset); |
| 612 | } |
| 613 | return (ULONG_MAX); |
| 614 | } |
| 615 | |
| 616 | #else |
| 617 | unsigned long |
| 618 | jit_regset_scan1(jit_regset_t *set, jit_int32_t offset) |
| 619 | { |
| 620 | jit_regset_t mask; |
| 621 | assert(offset >= 0 && offset <= 63); |
| 622 | if ((mask = *set >> offset)) { |
| 623 | for (;;) { |
| 624 | if (mask & 1) |
| 625 | return (offset); |
| 626 | mask >>= 1; |
| 627 | ++offset; |
| 628 | } |
| 629 | } |
| 630 | return (ULONG_MAX); |
| 631 | } |
| 632 | #endif |
| 633 | |
| 634 | void |
| 635 | _jit_save(jit_state_t *_jit, jit_int32_t reg) |
| 636 | { |
| 637 | reg = jit_regno(reg); |
| 638 | assert(!_jitc->realize); |
| 639 | _jitc->spill[reg] = jit_new_node_w(jit_code_save, reg); |
| 640 | } |
| 641 | |
| 642 | void |
| 643 | _jit_load(jit_state_t *_jit, jit_int32_t reg) |
| 644 | { |
| 645 | jit_node_t *node; |
| 646 | |
| 647 | reg = jit_regno(reg); |
| 648 | assert(!_jitc->realize); |
| 649 | assert(_jitc->spill[reg] != NULL); |
| 650 | node = jit_new_node_w(jit_code_load, reg); |
| 651 | /* create a path to flag the save/load is not required */ |
| 652 | node->link = _jitc->spill[reg]; |
| 653 | node->link->link = node; |
| 654 | _jitc->spill[reg] = NULL; |
| 655 | } |
| 656 | |
| 657 | static jit_word_t |
| 658 | hash_data(const void *data, jit_word_t length) |
| 659 | { |
| 660 | const jit_uint8_t *ptr; |
| 661 | jit_word_t i, key; |
| 662 | for (i = key = 0, ptr = data; i < length; i++) |
| 663 | key = (key << (key & 1)) ^ ptr[i]; |
| 664 | return (key); |
| 665 | } |
| 666 | |
| 667 | jit_pointer_t |
| 668 | _jit_address(jit_state_t *_jit, jit_node_t *node) |
| 669 | { |
| 670 | assert(_jitc->done); |
| 671 | assert(node != NULL && |
| 672 | /* If a node type that is documented to be a fixed marker */ |
| 673 | (node->code == jit_code_note || node->code == jit_code_name || |
| 674 | /* If another special fixed marker, returned by jit_indirect() */ |
| 675 | (node->code == jit_code_label && (node->flag & jit_flag_use) != 0))); |
| 676 | return ((jit_pointer_t)node->u.w); |
| 677 | } |
| 678 | |
| 679 | jit_node_t * |
| 680 | _jit_data(jit_state_t *_jit, const void *data, |
| 681 | jit_word_t length, jit_int32_t align) |
| 682 | { |
| 683 | jit_word_t key; |
| 684 | jit_node_t *node; |
| 685 | |
| 686 | assert(!_jitc->realize); |
| 687 | |
| 688 | /* Ensure there is space even if asking for a duplicate */ |
| 689 | if (((_jitc->data.offset + 7) & -8) + length > _jit->data.length) { |
| 690 | jit_word_t size; |
| 691 | |
| 692 | size = (_jit->data.length + length + 4096) & - 4095; |
| 693 | assert(size >= _jit->data.length); |
| 694 | if (_jitc->data.ptr == NULL) |
| 695 | jit_alloc((jit_pointer_t *)&_jitc->data.ptr, size); |
| 696 | else |
| 697 | jit_realloc((jit_pointer_t *)&_jitc->data.ptr, |
| 698 | _jit->data.length, size); |
| 699 | _jit->data.length = size; |
| 700 | } |
| 701 | if (_jitc->data.table == NULL) |
| 702 | jit_alloc((jit_pointer_t *)&_jitc->data.table, |
| 703 | (_jitc->data.size = 16) * sizeof(jit_node_t*)); |
| 704 | |
| 705 | key = hash_data(data, length) & (_jitc->data.size - 1); |
| 706 | node = _jitc->data.table[key]; |
| 707 | for (; node; node = node->next) { |
| 708 | if (node->v.w == length && |
| 709 | memcmp(_jitc->data.ptr + node->u.w, data, length) == 0) |
| 710 | break; |
| 711 | } |
| 712 | |
| 713 | if (!node) { |
| 714 | node = jit_new_node_no_link(jit_code_data); |
| 715 | if (!align) |
| 716 | align = length; |
| 717 | switch (align) { |
| 718 | case 0: case 1: |
| 719 | break; |
| 720 | case 2: |
| 721 | _jitc->data.offset = (_jitc->data.offset + 1) & -2; |
| 722 | break; |
| 723 | case 3: case 4: |
| 724 | _jitc->data.offset = (_jitc->data.offset + 3) & -4; |
| 725 | break; |
| 726 | default: |
| 727 | _jitc->data.offset = (_jitc->data.offset + 7) & -8; |
| 728 | break; |
| 729 | } |
| 730 | node->u.w = _jitc->data.offset; |
| 731 | node->v.w = length; |
| 732 | jit_memcpy(_jitc->data.ptr + _jitc->data.offset, data, length); |
| 733 | _jitc->data.offset += length; |
| 734 | |
| 735 | node->next = _jitc->data.table[key]; |
| 736 | _jitc->data.table[key] = node; |
| 737 | ++_jitc->data.count; |
| 738 | |
| 739 | /* Rehash if more than 75% used table */ |
| 740 | if (_jitc->data.count > |
| 741 | (_jitc->data.size >> 1) + (_jitc->data.size >> 2) && |
| 742 | (_jitc->data.size << 1) > _jitc->data.size) { |
| 743 | jit_word_t i; |
| 744 | jit_node_t **hash; |
| 745 | jit_node_t *next; |
| 746 | jit_node_t *temp; |
| 747 | |
| 748 | jit_alloc((jit_pointer_t *)&hash, |
| 749 | (_jitc->data.size << 1) * sizeof(jit_node_t*)); |
| 750 | for (i = 0; i < _jitc->data.size; i++) { |
| 751 | temp = _jitc->data.table[i]; |
| 752 | for (; temp; temp = next) { |
| 753 | next = temp->next; |
| 754 | key = hash_data(_jitc->data.ptr + temp->u.w, temp->v.w) & |
| 755 | ((_jitc->data.size << 1) - 1); |
| 756 | temp->next = hash[key]; |
| 757 | hash[key] = temp; |
| 758 | } |
| 759 | } |
| 760 | jit_free((jit_pointer_t *)&_jitc->data.table); |
| 761 | _jitc->data.table = hash; |
| 762 | _jitc->data.size <<= 1; |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | return (node); |
| 767 | } |
| 768 | |
| 769 | static void |
| 770 | _new_pool(jit_state_t *_jit) |
| 771 | { |
| 772 | jit_node_t *list; |
| 773 | jit_int32_t offset; |
| 774 | |
| 775 | if (_jitc->pool.offset >= _jitc->pool.length) { |
| 776 | jit_int32_t length; |
| 777 | |
| 778 | length = _jitc->pool.length + 16; |
| 779 | jit_realloc((jit_pointer_t *)&_jitc->pool.ptr, |
| 780 | _jitc->pool.length * sizeof(jit_node_t *), |
| 781 | length * sizeof(jit_node_t *)); |
| 782 | _jitc->pool.length = length; |
| 783 | } |
| 784 | jit_alloc((jit_pointer_t *)(_jitc->pool.ptr + _jitc->pool.offset), |
| 785 | sizeof(jit_node_t) * 1024); |
| 786 | list = _jitc->pool.ptr[_jitc->pool.offset]; |
| 787 | for (offset = 1; offset < 1024; offset++, list++) |
| 788 | list->next = list + 1; |
| 789 | list->next = _jitc->list; |
| 790 | _jitc->list = _jitc->pool.ptr[_jitc->pool.offset]; |
| 791 | ++_jitc->pool.offset; |
| 792 | } |
| 793 | |
| 794 | static jit_node_t * |
| 795 | _new_node(jit_state_t *_jit, jit_code_t code) |
| 796 | { |
| 797 | jit_node_t *node; |
| 798 | |
| 799 | if (_jitc->list == NULL) |
| 800 | new_pool(); |
| 801 | node = _jitc->list; |
| 802 | _jitc->list = node->next; |
| 803 | if (_jitc->synth) |
| 804 | node->flag |= jit_flag_synth; |
| 805 | node->next = NULL; |
| 806 | node->code = code; |
| 807 | |
| 808 | return (node); |
| 809 | } |
| 810 | |
| 811 | static inline jit_node_t * |
| 812 | _link_node(jit_state_t *_jit, jit_node_t *node) |
| 813 | { |
| 814 | if (_jitc->tail) |
| 815 | _jitc->tail->next = node; |
| 816 | else |
| 817 | _jitc->head = node; |
| 818 | return (_jitc->tail = node); |
| 819 | } |
| 820 | |
| 821 | static inline void |
| 822 | _del_node(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 823 | { |
| 824 | if (prev == node) { |
| 825 | assert(prev == _jitc->head); |
| 826 | _jitc->head = node->next; |
| 827 | } |
| 828 | else |
| 829 | prev->next = node->next; |
| 830 | memset(node, 0, sizeof(jit_node_t)); |
| 831 | node->next = _jitc->list; |
| 832 | _jitc->list = node; |
| 833 | } |
| 834 | |
| 835 | static inline void |
| 836 | _free_node(jit_state_t *_jit, jit_node_t *node) |
| 837 | { |
| 838 | memset(node, 0, sizeof(jit_node_t)); |
| 839 | node->next = _jitc->list; |
| 840 | _jitc->list = node; |
| 841 | } |
| 842 | |
| 843 | static void |
| 844 | _del_label(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 845 | { |
| 846 | jit_block_t *block; |
| 847 | |
| 848 | /* only allow call to del_label on linked labels */ |
| 849 | block = _jitc->blocks.ptr + node->v.w; |
| 850 | assert(block->label == node); |
| 851 | |
| 852 | /* del_label() should only be called when optimizing. |
| 853 | * This will leave an empty block index */ |
| 854 | jit_regset_del(&block->reglive); |
| 855 | jit_regset_del(&block->regmask); |
| 856 | block->label = NULL; |
| 857 | |
| 858 | /* redundant, should be already true */ |
| 859 | assert(node->link == NULL); |
| 860 | del_node(prev, node); |
| 861 | } |
| 862 | |
| 863 | jit_state_t * |
| 864 | jit_new_state(void) |
| 865 | { |
| 866 | jit_state_t *_jit; |
| 867 | |
| 868 | jit_alloc((jit_pointer_t *)&_jit, sizeof(jit_state_t)); |
| 869 | jit_alloc((jit_pointer_t *)&_jitc, sizeof(jit_compiler_t)); |
| 870 | jit_regset_new(&_jitc->regarg); |
| 871 | jit_regset_new(&_jitc->regsav); |
| 872 | jit_regset_new(&_jitc->reglive); |
| 873 | jit_regset_new(&_jitc->regmask); |
| 874 | |
| 875 | jit_init(); |
| 876 | |
| 877 | jit_alloc((jit_pointer_t *)&_jitc->spill, |
| 878 | _jitc->reglen * sizeof(jit_node_t*)); |
| 879 | jit_alloc((jit_pointer_t *)&_jitc->gen, |
| 880 | _jitc->reglen * sizeof(jit_int32_t)); |
| 881 | jit_alloc((jit_pointer_t *)&_jitc->values, |
| 882 | _jitc->reglen * sizeof(jit_value_t)); |
| 883 | |
| 884 | jit_alloc((jit_pointer_t *)&_jitc->patches.ptr, |
| 885 | (_jitc->patches.length = 1024) * sizeof(jit_patch_t)); |
| 886 | jit_alloc((jit_pointer_t *)&_jitc->functions.ptr, |
| 887 | (_jitc->functions.length = 16) * sizeof(jit_function_t)); |
| 888 | jit_alloc((jit_pointer_t *)&_jitc->pool.ptr, |
| 889 | (_jitc->pool.length = 16) * sizeof(jit_node_t*)); |
| 890 | jit_alloc((jit_pointer_t *)&_jitc->blocks.ptr, |
| 891 | (_jitc->blocks.length = 16) * sizeof(jit_block_t)); |
| 892 | #if __arm__ && DISASSEMBLER |
| 893 | jit_alloc((jit_pointer_t *)&_jitc->data_info.ptr, |
| 894 | (_jitc->data_info.length = 1024) * sizeof(jit_data_info_t)); |
| 895 | #endif |
| 896 | |
| 897 | /* allocate at most one extra note in case jit_name() is |
| 898 | * never called, or called after adding at least one note */ |
| 899 | _jit->note.length = 1; |
| 900 | _jitc->note.size = sizeof(jit_note_t); |
| 901 | |
| 902 | return (_jit); |
| 903 | } |
| 904 | |
| 905 | void |
| 906 | _jit_clear_state(jit_state_t *_jit) |
| 907 | { |
| 908 | #if DEVEL_DISASSEMBLER |
| 909 | # define jit_really_clear_state() _jit_really_clear_state(_jit) |
| 910 | } |
| 911 | |
| 912 | void _jit_really_clear_state(jit_state_t *_jit) |
| 913 | { |
| 914 | #endif |
| 915 | jit_word_t offset; |
| 916 | jit_function_t *function; |
| 917 | |
| 918 | /* release memory not required at jit execution time and set |
| 919 | * pointers to NULL to explicitly know they are released */ |
| 920 | _jitc->head = _jitc->tail = NULL; |
| 921 | |
| 922 | jit_free((jit_pointer_t *)&_jitc->data.table); |
| 923 | _jitc->data.size = _jitc->data.count = 0; |
| 924 | |
| 925 | jit_free((jit_pointer_t *)&_jitc->spill); |
| 926 | jit_free((jit_pointer_t *)&_jitc->gen); |
| 927 | jit_free((jit_pointer_t *)&_jitc->values); |
| 928 | |
| 929 | jit_free((jit_pointer_t *)&_jitc->blocks.ptr); |
| 930 | |
| 931 | jit_free((jit_pointer_t *)&_jitc->patches.ptr); |
| 932 | _jitc->patches.offset = _jitc->patches.length = 0; |
| 933 | |
| 934 | for (offset = 0; offset < _jitc->functions.offset; offset++) { |
| 935 | function = _jitc->functions.ptr + offset; |
| 936 | jit_free((jit_pointer_t *)&function->regoff); |
| 937 | } |
| 938 | jit_free((jit_pointer_t *)&_jitc->functions.ptr); |
| 939 | _jitc->functions.offset = _jitc->functions.length = 0; |
| 940 | _jitc->function = NULL; |
| 941 | |
| 942 | for (offset = 0; offset < _jitc->pool.offset; offset++) |
| 943 | jit_free((jit_pointer_t *)(_jitc->pool.ptr + offset)); |
| 944 | jit_free((jit_pointer_t *)&_jitc->pool.ptr); |
| 945 | _jitc->pool.offset = _jitc->pool.length = 0; |
| 946 | _jitc->list = NULL; |
| 947 | |
| 948 | _jitc->note.head = _jitc->note.tail = |
| 949 | _jitc->note.name = _jitc->note.note = NULL; |
| 950 | _jitc->note.base = NULL; |
| 951 | |
| 952 | #if __arm__ && DISASSEMBLER |
| 953 | jit_free((jit_pointer_t *)&_jitc->data_info.ptr); |
| 954 | #endif |
| 955 | |
| 956 | #if (__powerpc__ && _CALL_AIXDESC) || __ia64__ |
| 957 | jit_free((jit_pointer_t *)&_jitc->prolog.ptr); |
| 958 | #endif |
| 959 | |
| 960 | #if __ia64__ |
| 961 | jit_regset_del(&_jitc->regs); |
| 962 | #endif |
| 963 | |
| 964 | jit_free((jit_pointer_t *)&_jitc); |
| 965 | } |
| 966 | |
| 967 | void |
| 968 | _jit_destroy_state(jit_state_t *_jit) |
| 969 | { |
| 970 | #if DEVEL_DISASSEMBLER |
| 971 | jit_really_clear_state(); |
| 972 | #endif |
| 973 | #if HAVE_MMAP |
| 974 | if (!_jit->user_code) |
| 975 | munmap(_jit->code.ptr, _jit->code.length); |
| 976 | if (!_jit->user_data) |
| 977 | munmap(_jit->data.ptr, _jit->data.length); |
| 978 | #endif |
| 979 | jit_free((jit_pointer_t *)&_jit); |
| 980 | } |
| 981 | |
| 982 | void |
| 983 | _jit_synth_inc(jit_state_t *_jit) |
| 984 | { |
| 985 | assert(_jitc->synth < 8); |
| 986 | ++_jitc->synth; |
| 987 | } |
| 988 | |
| 989 | jit_node_t * |
| 990 | _jit_new_node(jit_state_t *_jit, jit_code_t code) |
| 991 | { |
| 992 | assert(!_jitc->realize); |
| 993 | return (link_node(new_node(code))); |
| 994 | } |
| 995 | |
| 996 | jit_node_t * |
| 997 | _jit_new_node_no_link(jit_state_t *_jit, jit_code_t code) |
| 998 | { |
| 999 | assert(!_jitc->realize); |
| 1000 | return (new_node(code)); |
| 1001 | } |
| 1002 | |
| 1003 | void |
| 1004 | _jit_link_node(jit_state_t *_jit, jit_node_t *node) |
| 1005 | { |
| 1006 | assert(!_jitc->realize); |
| 1007 | link_node(node); |
| 1008 | } |
| 1009 | |
| 1010 | void |
| 1011 | _jit_synth_dec(jit_state_t *_jit) |
| 1012 | { |
| 1013 | assert(_jitc->synth > 0); |
| 1014 | --_jitc->synth; |
| 1015 | } |
| 1016 | |
| 1017 | jit_node_t * |
| 1018 | _jit_new_node_w(jit_state_t *_jit, jit_code_t code, |
| 1019 | jit_word_t u) |
| 1020 | { |
| 1021 | jit_node_t *node = new_node(code); |
| 1022 | assert(!_jitc->realize); |
| 1023 | node->u.w = u; |
| 1024 | return (link_node(node)); |
| 1025 | } |
| 1026 | |
| 1027 | jit_node_t * |
| 1028 | _jit_new_node_f(jit_state_t *_jit, jit_code_t code, |
| 1029 | jit_float32_t u) |
| 1030 | { |
| 1031 | jit_node_t *node = new_node(code); |
| 1032 | assert(!_jitc->realize); |
| 1033 | node->u.f = u; |
| 1034 | return (link_node(node)); |
| 1035 | } |
| 1036 | |
| 1037 | jit_node_t * |
| 1038 | _jit_new_node_d(jit_state_t *_jit, jit_code_t code, |
| 1039 | jit_float64_t u) |
| 1040 | { |
| 1041 | jit_node_t *node = new_node(code); |
| 1042 | assert(!_jitc->realize); |
| 1043 | node->u.d = u; |
| 1044 | return (link_node(node)); |
| 1045 | } |
| 1046 | |
| 1047 | jit_node_t * |
| 1048 | _jit_new_node_p(jit_state_t *_jit, jit_code_t code, |
| 1049 | jit_pointer_t u) |
| 1050 | { |
| 1051 | jit_node_t *node = new_node(code); |
| 1052 | assert(!_jitc->realize); |
| 1053 | node->u.p = u; |
| 1054 | return (link_node(node)); |
| 1055 | } |
| 1056 | |
| 1057 | jit_node_t * |
| 1058 | _jit_new_node_ww(jit_state_t *_jit, jit_code_t code, |
| 1059 | jit_word_t u, jit_word_t v) |
| 1060 | { |
| 1061 | jit_node_t *node = new_node(code); |
| 1062 | assert(!_jitc->realize); |
| 1063 | node->u.w = u; |
| 1064 | node->v.w = v; |
| 1065 | return (link_node(node)); |
| 1066 | } |
| 1067 | |
| 1068 | jit_node_t * |
| 1069 | _jit_new_node_wp(jit_state_t *_jit, jit_code_t code, |
| 1070 | jit_word_t u, jit_pointer_t v) |
| 1071 | { |
| 1072 | return (jit_new_node_ww(code, u, (jit_word_t)v)); |
| 1073 | } |
| 1074 | |
| 1075 | jit_node_t * |
| 1076 | _jit_new_node_fp(jit_state_t *_jit, jit_code_t code, |
| 1077 | jit_float32_t u, jit_pointer_t v) |
| 1078 | { |
| 1079 | jit_node_t *node = new_node(code); |
| 1080 | assert(!_jitc->realize); |
| 1081 | node->u.f = u; |
| 1082 | node->v.w = (jit_word_t)v; |
| 1083 | return (link_node(node)); |
| 1084 | } |
| 1085 | |
| 1086 | jit_node_t * |
| 1087 | _jit_new_node_dp(jit_state_t *_jit, jit_code_t code, |
| 1088 | jit_float64_t u, jit_pointer_t v) |
| 1089 | { |
| 1090 | jit_node_t *node = new_node(code); |
| 1091 | assert(!_jitc->realize); |
| 1092 | node->u.d = u; |
| 1093 | node->v.w = (jit_word_t)v; |
| 1094 | return (link_node(node)); |
| 1095 | } |
| 1096 | |
| 1097 | jit_node_t * |
| 1098 | _jit_new_node_pw(jit_state_t *_jit, jit_code_t code, |
| 1099 | jit_pointer_t u, jit_word_t v) |
| 1100 | { |
| 1101 | return (jit_new_node_ww(code, (jit_word_t)u, v)); |
| 1102 | } |
| 1103 | |
| 1104 | jit_node_t * |
| 1105 | _jit_new_node_wf(jit_state_t *_jit, jit_code_t code, |
| 1106 | jit_word_t u, jit_float32_t v) |
| 1107 | { |
| 1108 | jit_node_t *node = new_node(code); |
| 1109 | assert(!_jitc->realize); |
| 1110 | node->u.w = u; |
| 1111 | node->v.f = v; |
| 1112 | return (link_node(node)); |
| 1113 | } |
| 1114 | |
| 1115 | jit_node_t * |
| 1116 | _jit_new_node_wd(jit_state_t *_jit, jit_code_t code, |
| 1117 | jit_word_t u, jit_float64_t v) |
| 1118 | { |
| 1119 | jit_node_t *node = new_node(code); |
| 1120 | assert(!_jitc->realize); |
| 1121 | node->u.w = u; |
| 1122 | node->v.d = v; |
| 1123 | return (link_node(node)); |
| 1124 | } |
| 1125 | |
| 1126 | jit_node_t * |
| 1127 | _jit_new_node_www(jit_state_t *_jit, jit_code_t code, |
| 1128 | jit_word_t u, jit_word_t v, jit_word_t w) |
| 1129 | { |
| 1130 | jit_node_t *node = new_node(code); |
| 1131 | assert(!_jitc->realize); |
| 1132 | node->u.w = u; |
| 1133 | node->v.w = v; |
| 1134 | node->w.w = w; |
| 1135 | return (link_node(node)); |
| 1136 | } |
| 1137 | |
| 1138 | jit_node_t * |
| 1139 | _jit_new_node_qww(jit_state_t *_jit, jit_code_t code, |
| 1140 | jit_int32_t l, jit_int32_t h, |
| 1141 | jit_word_t v, jit_word_t w) |
| 1142 | { |
| 1143 | jit_node_t *node = new_node(code); |
| 1144 | assert(!_jitc->realize); |
| 1145 | assert(l != h); |
| 1146 | node->u.q.l = l; |
| 1147 | node->u.q.h = h; |
| 1148 | node->v.w = v; |
| 1149 | node->w.w = w; |
| 1150 | return (link_node(node)); |
| 1151 | } |
| 1152 | |
| 1153 | jit_node_t * |
| 1154 | _jit_new_node_wwq(jit_state_t *_jit, jit_code_t code, |
| 1155 | jit_word_t u, jit_word_t v, |
| 1156 | jit_int32_t l, jit_int32_t h) |
| 1157 | { |
| 1158 | jit_node_t *node = new_node(code); |
| 1159 | assert(!_jitc->realize); |
| 1160 | node->u.w = u; |
| 1161 | node->v.w = v; |
| 1162 | node->w.q.l = l; |
| 1163 | node->w.q.h = h; |
| 1164 | return (link_node(node)); |
| 1165 | } |
| 1166 | |
| 1167 | jit_node_t * |
| 1168 | _jit_new_node_wwf(jit_state_t *_jit, jit_code_t code, |
| 1169 | jit_word_t u, jit_word_t v, jit_float32_t w) |
| 1170 | { |
| 1171 | jit_node_t *node = new_node(code); |
| 1172 | assert(!_jitc->realize); |
| 1173 | node->u.w = u; |
| 1174 | node->v.w = v; |
| 1175 | node->w.f = w; |
| 1176 | return (link_node(node)); |
| 1177 | } |
| 1178 | |
| 1179 | jit_node_t * |
| 1180 | _jit_new_node_wwd(jit_state_t *_jit, jit_code_t code, |
| 1181 | jit_word_t u, jit_word_t v, jit_float64_t w) |
| 1182 | { |
| 1183 | jit_node_t *node = new_node(code); |
| 1184 | assert(!_jitc->realize); |
| 1185 | node->u.w = u; |
| 1186 | node->v.w = v; |
| 1187 | node->w.d = w; |
| 1188 | return (link_node(node)); |
| 1189 | } |
| 1190 | |
| 1191 | jit_node_t * |
| 1192 | _jit_new_node_pww(jit_state_t *_jit, jit_code_t code, |
| 1193 | jit_pointer_t u, jit_word_t v, jit_word_t w) |
| 1194 | { |
| 1195 | jit_node_t *node = new_node(code); |
| 1196 | assert(!_jitc->realize); |
| 1197 | node->u.p = u; |
| 1198 | node->v.w = v; |
| 1199 | node->w.w = w; |
| 1200 | return (link_node(node)); |
| 1201 | } |
| 1202 | |
| 1203 | jit_node_t * |
| 1204 | _jit_new_node_pwf(jit_state_t *_jit, jit_code_t code, |
| 1205 | jit_pointer_t u, jit_word_t v, jit_float32_t w) |
| 1206 | { |
| 1207 | jit_node_t *node = new_node(code); |
| 1208 | assert(!_jitc->realize); |
| 1209 | node->u.p = u; |
| 1210 | node->v.w = v; |
| 1211 | node->w.f = w; |
| 1212 | return (link_node(node)); |
| 1213 | } |
| 1214 | |
| 1215 | jit_node_t * |
| 1216 | _jit_new_node_pwd(jit_state_t *_jit, jit_code_t code, |
| 1217 | jit_pointer_t u, jit_word_t v, jit_float64_t w) |
| 1218 | { |
| 1219 | jit_node_t *node = new_node(code); |
| 1220 | assert(!_jitc->realize); |
| 1221 | node->u.p = u; |
| 1222 | node->v.w = v; |
| 1223 | node->w.d = w; |
| 1224 | return (link_node(node)); |
| 1225 | } |
| 1226 | |
| 1227 | jit_node_t * |
| 1228 | _jit_label(jit_state_t *_jit) |
| 1229 | { |
| 1230 | jit_node_t *node; |
| 1231 | |
| 1232 | if (!(node = _jitc->tail) || node->code != jit_code_label) { |
| 1233 | node = jit_forward(); |
| 1234 | jit_link(node); |
| 1235 | } |
| 1236 | |
| 1237 | return (node); |
| 1238 | } |
| 1239 | |
| 1240 | jit_node_t * |
| 1241 | _jit_forward(jit_state_t *_jit) |
| 1242 | { |
| 1243 | return (jit_new_node_no_link(jit_code_label)); |
| 1244 | } |
| 1245 | |
| 1246 | jit_node_t * |
| 1247 | _jit_indirect(jit_state_t *_jit) |
| 1248 | { |
| 1249 | jit_node_t *node; |
| 1250 | |
| 1251 | node = jit_label(); |
| 1252 | node->flag |= jit_flag_use; |
| 1253 | |
| 1254 | return (node); |
| 1255 | } |
| 1256 | |
| 1257 | void |
| 1258 | _jit_link(jit_state_t *_jit, jit_node_t *node) |
| 1259 | { |
| 1260 | jit_block_t *block; |
| 1261 | |
| 1262 | assert((node->code == jit_code_label || |
| 1263 | node->code == jit_code_prolog || |
| 1264 | node->code == jit_code_epilog) && !node->next); |
| 1265 | jit_link_node(node); |
| 1266 | if (_jitc->blocks.offset >= _jitc->blocks.length) { |
| 1267 | jit_word_t length; |
| 1268 | |
| 1269 | length = _jitc->blocks.length + 16; |
| 1270 | jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr, |
| 1271 | _jitc->blocks.length * sizeof(jit_block_t), |
| 1272 | length * sizeof(jit_block_t)); |
| 1273 | _jitc->blocks.length = length; |
| 1274 | } |
| 1275 | block = _jitc->blocks.ptr + _jitc->blocks.offset; |
| 1276 | block->label = node; |
| 1277 | node->v.w = _jitc->blocks.offset; |
| 1278 | jit_regset_new(&block->reglive); |
| 1279 | jit_regset_new(&block->regmask); |
| 1280 | ++_jitc->blocks.offset; |
| 1281 | } |
| 1282 | |
| 1283 | jit_bool_t |
| 1284 | _jit_forward_p(jit_state_t *_jit, jit_node_t *node) |
| 1285 | { |
| 1286 | return (node->code == jit_code_label && !node->next && node != _jitc->tail); |
| 1287 | } |
| 1288 | |
| 1289 | jit_bool_t |
| 1290 | _jit_indirect_p(jit_state_t *_jit, jit_node_t *node) |
| 1291 | { |
| 1292 | return (node->code == jit_code_label && !!(node->flag & jit_flag_use)); |
| 1293 | } |
| 1294 | |
| 1295 | jit_bool_t |
| 1296 | _jit_target_p(jit_state_t *_jit, jit_node_t *node) |
| 1297 | { |
| 1298 | return (node->code == jit_code_label && !!node->link); |
| 1299 | } |
| 1300 | |
| 1301 | void |
| 1302 | _jit_prepare(jit_state_t *_jit) |
| 1303 | { |
| 1304 | assert(_jitc->function != NULL); |
| 1305 | _jitc->function->call.call = jit_call_default; |
| 1306 | _jitc->function->call.argi = |
| 1307 | _jitc->function->call.argf = |
| 1308 | _jitc->function->call.size = 0; |
| 1309 | _jitc->prepare = jit_new_node(jit_code_prepare); |
| 1310 | } |
| 1311 | |
| 1312 | void |
| 1313 | _jit_patch(jit_state_t* _jit, jit_node_t *instr) |
| 1314 | { |
| 1315 | jit_node_t *label; |
| 1316 | |
| 1317 | if (!(label = _jitc->tail) || label->code != jit_code_label) |
| 1318 | label = jit_label(); |
| 1319 | jit_patch_at(instr, label); |
| 1320 | } |
| 1321 | |
| 1322 | jit_int32_t |
| 1323 | _jit_classify(jit_state_t *_jit, jit_code_t code) |
| 1324 | { |
| 1325 | jit_int32_t mask; |
| 1326 | |
| 1327 | switch (code) { |
| 1328 | case jit_code_data: case jit_code_save: case jit_code_load: |
| 1329 | case jit_code_name: case jit_code_label: case jit_code_note: |
| 1330 | case jit_code_prolog: case jit_code_ellipsis: case jit_code_va_push: |
| 1331 | case jit_code_epilog: case jit_code_ret: case jit_code_prepare: |
| 1332 | mask = 0; |
| 1333 | break; |
| 1334 | case jit_code_live: case jit_code_va_end: |
| 1335 | case jit_code_retr: case jit_code_retr_f: case jit_code_retr_d: |
| 1336 | case jit_code_pushargr: case jit_code_pushargr_f: |
| 1337 | case jit_code_pushargr_d: |
| 1338 | case jit_code_finishr: /* synthesized will set jit_cc_a0_jmp */ |
| 1339 | mask = jit_cc_a0_reg; |
| 1340 | break; |
| 1341 | case jit_code_align: case jit_code_reti: case jit_code_pushargi: |
| 1342 | case jit_code_finishi: /* synthesized will set jit_cc_a0_jmp */ |
| 1343 | mask = jit_cc_a0_int; |
| 1344 | break; |
| 1345 | case jit_code_reti_f: case jit_code_pushargi_f: |
| 1346 | mask = jit_cc_a0_flt; |
| 1347 | break; |
| 1348 | case jit_code_reti_d: case jit_code_pushargi_d: |
| 1349 | mask = jit_cc_a0_dbl; |
| 1350 | break; |
| 1351 | case jit_code_allocai: |
| 1352 | mask = jit_cc_a0_int|jit_cc_a1_int; |
| 1353 | break; |
| 1354 | case jit_code_arg: case jit_code_arg_f: case jit_code_arg_d: |
| 1355 | mask = jit_cc_a0_int|jit_cc_a0_arg; |
| 1356 | break; |
| 1357 | case jit_code_calli: case jit_code_jmpi: |
| 1358 | mask = jit_cc_a0_jmp; |
| 1359 | break; |
| 1360 | case jit_code_callr: case jit_code_jmpr: |
| 1361 | mask = jit_cc_a0_reg|jit_cc_a0_jmp; |
| 1362 | break; |
| 1363 | case jit_code_retval_c: case jit_code_retval_uc: |
| 1364 | case jit_code_retval_s: case jit_code_retval_us: |
| 1365 | case jit_code_retval_i: case jit_code_retval_ui: |
| 1366 | case jit_code_retval_l: |
| 1367 | case jit_code_retval_f: case jit_code_retval_d: |
| 1368 | case jit_code_va_start: |
| 1369 | mask = jit_cc_a0_reg|jit_cc_a0_chg; |
| 1370 | break; |
| 1371 | case jit_code_getarg_c: case jit_code_getarg_uc: |
| 1372 | case jit_code_getarg_s: case jit_code_getarg_us: |
| 1373 | case jit_code_getarg_i: case jit_code_getarg_ui: |
| 1374 | case jit_code_getarg_l: |
| 1375 | case jit_code_getarg_f: case jit_code_getarg_d: |
| 1376 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_arg; |
| 1377 | break; |
| 1378 | case jit_code_putargr: case jit_code_putargr_f: |
| 1379 | case jit_code_putargr_d: |
| 1380 | mask = jit_cc_a0_reg|jit_cc_a1_arg; |
| 1381 | break; |
| 1382 | case jit_code_putargi: |
| 1383 | mask = jit_cc_a0_int|jit_cc_a1_arg; |
| 1384 | break; |
| 1385 | case jit_code_putargi_f: |
| 1386 | mask = jit_cc_a0_flt|jit_cc_a1_arg; |
| 1387 | break; |
| 1388 | case jit_code_putargi_d: |
| 1389 | mask = jit_cc_a0_dbl|jit_cc_a1_arg; |
| 1390 | break; |
| 1391 | case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc: |
| 1392 | case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i: |
| 1393 | case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f: |
| 1394 | case jit_code_ldi_d: |
| 1395 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int; |
| 1396 | break; |
| 1397 | case jit_code_movi_f: case jit_code_movi_f_w: |
| 1398 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_flt; |
| 1399 | break; |
| 1400 | case jit_code_movi_d: case jit_code_movi_d_w: |
| 1401 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_dbl; |
| 1402 | break; |
| 1403 | case jit_code_movi_d_ww: |
| 1404 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg| |
| 1405 | jit_cc_a2_dbl; |
| 1406 | break; |
| 1407 | case jit_code_negr: case jit_code_comr: case jit_code_movr: |
| 1408 | case jit_code_extr_c: case jit_code_extr_uc: case jit_code_extr_s: |
| 1409 | case jit_code_extr_us: case jit_code_extr_i: case jit_code_extr_ui: |
| 1410 | case jit_code_truncr_f_i: case jit_code_truncr_f_l: |
| 1411 | case jit_code_truncr_d_i: case jit_code_truncr_d_l: |
| 1412 | case jit_code_htonr_us: case jit_code_htonr_ui: case jit_code_htonr_ul: |
| 1413 | case jit_code_bswapr_us: case jit_code_bswapr_ui: case jit_code_bswapr_ul: |
| 1414 | case jit_code_ldr_c: case jit_code_ldr_uc: |
| 1415 | case jit_code_ldr_s: case jit_code_ldr_us: case jit_code_ldr_i: |
| 1416 | case jit_code_ldr_ui: case jit_code_ldr_l: case jit_code_negr_f: |
| 1417 | case jit_code_absr_f: case jit_code_sqrtr_f: case jit_code_movr_f: |
| 1418 | case jit_code_extr_f: case jit_code_extr_d_f: case jit_code_ldr_f: |
| 1419 | case jit_code_negr_d: case jit_code_absr_d: case jit_code_sqrtr_d: |
| 1420 | case jit_code_movr_d: case jit_code_extr_d: case jit_code_extr_f_d: |
| 1421 | case jit_code_ldr_d: |
| 1422 | case jit_code_movr_w_f: case jit_code_movr_f_w: |
| 1423 | case jit_code_movr_w_d: case jit_code_movr_d_w: |
| 1424 | case jit_code_va_arg: case jit_code_va_arg_d: |
| 1425 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg; |
| 1426 | break; |
| 1427 | case jit_code_movr_d_ww: |
| 1428 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg| |
| 1429 | jit_cc_a2_reg; |
| 1430 | break; |
| 1431 | case jit_code_addi: case jit_code_addxi: case jit_code_addci: |
| 1432 | case jit_code_subi: case jit_code_subxi: case jit_code_subci: |
| 1433 | case jit_code_rsbi: |
| 1434 | case jit_code_muli: case jit_code_divi: case jit_code_divi_u: |
| 1435 | case jit_code_remi: case jit_code_remi_u: case jit_code_andi: |
| 1436 | case jit_code_ori: case jit_code_xori: case jit_code_lshi: |
| 1437 | case jit_code_rshi: case jit_code_rshi_u: case jit_code_lti: |
| 1438 | case jit_code_lti_u: case jit_code_lei: case jit_code_lei_u: |
| 1439 | case jit_code_eqi: case jit_code_gei: case jit_code_gei_u: |
| 1440 | case jit_code_gti: case jit_code_gti_u: case jit_code_nei: |
| 1441 | case jit_code_ldxi_c: case jit_code_ldxi_uc: case jit_code_ldxi_s: |
| 1442 | case jit_code_ldxi_us: case jit_code_ldxi_i: case jit_code_ldxi_ui: |
| 1443 | case jit_code_ldxi_l: case jit_code_ldxi_f: case jit_code_ldxi_d: |
| 1444 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_int; |
| 1445 | break; |
| 1446 | case jit_code_qmuli: case jit_code_qmuli_u: |
| 1447 | case jit_code_qdivi: case jit_code_qdivi_u: |
| 1448 | mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg| |
| 1449 | jit_cc_a1_reg|jit_cc_a2_int; |
| 1450 | break; |
| 1451 | case jit_code_addi_f: case jit_code_subi_f: case jit_code_rsbi_f: |
| 1452 | case jit_code_muli_f: case jit_code_divi_f: case jit_code_lti_f: |
| 1453 | case jit_code_lei_f: case jit_code_eqi_f: case jit_code_gei_f: |
| 1454 | case jit_code_gti_f: case jit_code_nei_f: case jit_code_unlti_f: |
| 1455 | case jit_code_unlei_f: case jit_code_uneqi_f: case jit_code_ungei_f: |
| 1456 | case jit_code_ungti_f: case jit_code_ltgti_f: case jit_code_ordi_f: |
| 1457 | case jit_code_unordi_f: |
| 1458 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_flt; |
| 1459 | break; |
| 1460 | case jit_code_addi_d: case jit_code_subi_d: case jit_code_rsbi_d: |
| 1461 | case jit_code_muli_d: case jit_code_divi_d: case jit_code_lti_d: |
| 1462 | case jit_code_lei_d: case jit_code_eqi_d: case jit_code_gei_d: |
| 1463 | case jit_code_gti_d: case jit_code_nei_d: case jit_code_unlti_d: |
| 1464 | case jit_code_unlei_d: case jit_code_uneqi_d: case jit_code_ungei_d: |
| 1465 | case jit_code_ungti_d: case jit_code_ltgti_d: case jit_code_ordi_d: |
| 1466 | case jit_code_unordi_d: |
| 1467 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_dbl; |
| 1468 | break; |
| 1469 | case jit_code_addr: case jit_code_addxr: case jit_code_addcr: |
| 1470 | case jit_code_subr: case jit_code_subxr: case jit_code_subcr: |
| 1471 | case jit_code_mulr: case jit_code_divr: case jit_code_divr_u: |
| 1472 | case jit_code_remr: case jit_code_remr_u: case jit_code_andr: |
| 1473 | case jit_code_orr: case jit_code_xorr: case jit_code_lshr: |
| 1474 | case jit_code_rshr: case jit_code_rshr_u: case jit_code_ltr: |
| 1475 | case jit_code_ltr_u: case jit_code_ler: case jit_code_ler_u: |
| 1476 | case jit_code_eqr: case jit_code_ger: case jit_code_ger_u: |
| 1477 | case jit_code_gtr: case jit_code_gtr_u: case jit_code_ner: |
| 1478 | case jit_code_ldxr_c: case jit_code_ldxr_uc: case jit_code_ldxr_s: |
| 1479 | case jit_code_ldxr_us: case jit_code_ldxr_i: case jit_code_ldxr_ui: |
| 1480 | case jit_code_ldxr_l: case jit_code_addr_f: case jit_code_subr_f: |
| 1481 | case jit_code_mulr_f: case jit_code_divr_f: case jit_code_ltr_f: |
| 1482 | case jit_code_ler_f: case jit_code_eqr_f: case jit_code_ger_f: |
| 1483 | case jit_code_gtr_f: case jit_code_ner_f: case jit_code_unltr_f: |
| 1484 | case jit_code_unler_f: case jit_code_uneqr_f: case jit_code_unger_f: |
| 1485 | case jit_code_ungtr_f: case jit_code_ltgtr_f: case jit_code_ordr_f: |
| 1486 | case jit_code_unordr_f: case jit_code_ldxr_f: case jit_code_addr_d: |
| 1487 | case jit_code_subr_d: case jit_code_mulr_d: case jit_code_divr_d: |
| 1488 | case jit_code_ltr_d: case jit_code_ler_d: case jit_code_eqr_d: |
| 1489 | case jit_code_ger_d: case jit_code_gtr_d: case jit_code_ner_d: |
| 1490 | case jit_code_unltr_d: case jit_code_unler_d: case jit_code_uneqr_d: |
| 1491 | case jit_code_unger_d: case jit_code_ungtr_d: case jit_code_ltgtr_d: |
| 1492 | case jit_code_ordr_d: case jit_code_unordr_d: case jit_code_ldxr_d: |
| 1493 | case jit_code_movr_ww_d: |
| 1494 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_reg; |
| 1495 | break; |
| 1496 | case jit_code_qmulr: case jit_code_qmulr_u: |
| 1497 | case jit_code_qdivr: case jit_code_qdivr_u: |
| 1498 | mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg| |
| 1499 | jit_cc_a1_reg|jit_cc_a2_reg; |
| 1500 | break; |
| 1501 | case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i: |
| 1502 | case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d: |
| 1503 | mask = jit_cc_a0_int|jit_cc_a1_reg; |
| 1504 | break; |
| 1505 | case jit_code_blti: case jit_code_blti_u: case jit_code_blei: |
| 1506 | case jit_code_blei_u: case jit_code_beqi: case jit_code_bgei: |
| 1507 | case jit_code_bgei_u: case jit_code_bgti: case jit_code_bgti_u: |
| 1508 | case jit_code_bnei: case jit_code_bmsi: case jit_code_bmci: |
| 1509 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_int; |
| 1510 | break; |
| 1511 | case jit_code_blti_f: case jit_code_blei_f: case jit_code_beqi_f: |
| 1512 | case jit_code_bgei_f: case jit_code_bgti_f: case jit_code_bnei_f: |
| 1513 | case jit_code_bunlti_f: case jit_code_bunlei_f: case jit_code_buneqi_f: |
| 1514 | case jit_code_bungei_f: case jit_code_bungti_f: case jit_code_bltgti_f: |
| 1515 | case jit_code_bordi_f: case jit_code_bunordi_f: |
| 1516 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_flt; |
| 1517 | break; |
| 1518 | case jit_code_blti_d: case jit_code_blei_d: case jit_code_beqi_d: |
| 1519 | case jit_code_bgei_d: case jit_code_bgti_d: case jit_code_bnei_d: |
| 1520 | case jit_code_bunlti_d: case jit_code_bunlei_d: case jit_code_buneqi_d: |
| 1521 | case jit_code_bungei_d: case jit_code_bungti_d: case jit_code_bltgti_d: |
| 1522 | case jit_code_bordi_d: case jit_code_bunordi_d: |
| 1523 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_dbl; |
| 1524 | break; |
| 1525 | case jit_code_allocar: /* synthesized instructions make it |
| 1526 | * equivalent to jit_cc_a0_chg */ |
| 1527 | case jit_code_str_c: case jit_code_str_s: case jit_code_str_i: |
| 1528 | case jit_code_str_l: case jit_code_str_f: case jit_code_str_d: |
| 1529 | mask = jit_cc_a0_reg|jit_cc_a1_reg; |
| 1530 | break; |
| 1531 | case jit_code_stxi_c: case jit_code_stxi_s: case jit_code_stxi_i: |
| 1532 | case jit_code_stxi_l: case jit_code_stxi_f: case jit_code_stxi_d: |
| 1533 | mask = jit_cc_a0_int|jit_cc_a1_reg|jit_cc_a2_reg; |
| 1534 | break; |
| 1535 | case jit_code_bltr: case jit_code_bltr_u: case jit_code_bler: |
| 1536 | case jit_code_bler_u: case jit_code_beqr: case jit_code_bger: |
| 1537 | case jit_code_bger_u: case jit_code_bgtr: case jit_code_bgtr_u: |
| 1538 | case jit_code_bner: case jit_code_bmsr: case jit_code_bmcr: |
| 1539 | case jit_code_bltr_f: case jit_code_bler_f: case jit_code_beqr_f: |
| 1540 | case jit_code_bger_f: case jit_code_bgtr_f: case jit_code_bner_f: |
| 1541 | case jit_code_bunltr_f: case jit_code_bunler_f: case jit_code_buneqr_f: |
| 1542 | case jit_code_bunger_f: case jit_code_bungtr_f: case jit_code_bltgtr_f: |
| 1543 | case jit_code_bordr_f: case jit_code_bunordr_f:case jit_code_bltr_d: |
| 1544 | case jit_code_bler_d: case jit_code_beqr_d: case jit_code_bger_d: |
| 1545 | case jit_code_bgtr_d: case jit_code_bner_d: case jit_code_bunltr_d: |
| 1546 | case jit_code_bunler_d: case jit_code_buneqr_d: case jit_code_bunger_d: |
| 1547 | case jit_code_bungtr_d: case jit_code_bltgtr_d: case jit_code_bordr_d: |
| 1548 | case jit_code_bunordr_d: |
| 1549 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_reg; |
| 1550 | break; |
| 1551 | case jit_code_boaddi: case jit_code_boaddi_u: case jit_code_bxaddi: |
| 1552 | case jit_code_bxaddi_u: case jit_code_bosubi: case jit_code_bosubi_u: |
| 1553 | case jit_code_bxsubi: case jit_code_bxsubi_u: |
| 1554 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_int; |
| 1555 | break; |
| 1556 | case jit_code_stxr_c: case jit_code_stxr_s: case jit_code_stxr_i: |
| 1557 | case jit_code_stxr_l: case jit_code_stxr_f: case jit_code_stxr_d: |
| 1558 | mask = jit_cc_a0_reg|jit_cc_a1_reg|jit_cc_a2_reg; |
| 1559 | break; |
| 1560 | case jit_code_boaddr: case jit_code_boaddr_u: case jit_code_bxaddr: |
| 1561 | case jit_code_bxaddr_u: case jit_code_bosubr: case jit_code_bosubr_u: |
| 1562 | case jit_code_bxsubr: case jit_code_bxsubr_u: |
| 1563 | mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_reg; |
| 1564 | break; |
| 1565 | case jit_code_movnr: case jit_code_movzr: |
| 1566 | mask = jit_cc_a0_reg|jit_cc_a0_cnd|jit_cc_a1_reg|jit_cc_a2_reg; |
| 1567 | break; |
| 1568 | case jit_code_casr: |
| 1569 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg| |
| 1570 | jit_cc_a2_reg|jit_cc_a2_rlh; |
| 1571 | break; |
| 1572 | case jit_code_casi: |
| 1573 | mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int| |
| 1574 | jit_cc_a2_reg|jit_cc_a2_rlh; |
| 1575 | break; |
| 1576 | default: |
| 1577 | abort(); |
| 1578 | } |
| 1579 | |
| 1580 | return (mask); |
| 1581 | } |
| 1582 | |
| 1583 | void |
| 1584 | _jit_patch_abs(jit_state_t *_jit, jit_node_t *instr, jit_pointer_t address) |
| 1585 | { |
| 1586 | jit_int32_t mask; |
| 1587 | |
| 1588 | switch (instr->code) { |
| 1589 | case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc: |
| 1590 | case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i: |
| 1591 | case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f: |
| 1592 | case jit_code_ldi_d: |
| 1593 | instr->v.p = address; |
| 1594 | break; |
| 1595 | case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i: |
| 1596 | case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d: |
| 1597 | instr->u.p = address; |
| 1598 | break; |
| 1599 | default: |
| 1600 | mask = jit_classify(instr->code); |
| 1601 | assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp); |
| 1602 | instr->u.p = address; |
| 1603 | } |
| 1604 | } |
| 1605 | |
| 1606 | void |
| 1607 | _jit_patch_at(jit_state_t *_jit, jit_node_t *instr, jit_node_t *label) |
| 1608 | { |
| 1609 | jit_int32_t mask; |
| 1610 | |
| 1611 | assert(!(instr->flag & jit_flag_node)); |
| 1612 | instr->flag |= jit_flag_node; |
| 1613 | switch (instr->code) { |
| 1614 | case jit_code_movi: |
| 1615 | assert(label->code == jit_code_label || |
| 1616 | label->code == jit_code_data); |
| 1617 | instr->v.n = label; |
| 1618 | if (label->code == jit_code_data) |
| 1619 | instr->flag |= jit_flag_data; |
| 1620 | break; |
| 1621 | case jit_code_jmpi: |
| 1622 | assert(label->code == jit_code_label || |
| 1623 | label->code == jit_code_epilog); |
| 1624 | instr->u.n = label; |
| 1625 | break; |
| 1626 | default: |
| 1627 | mask = jit_classify(instr->code); |
| 1628 | assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp); |
| 1629 | assert(label->code == jit_code_label); |
| 1630 | instr->u.n = label; |
| 1631 | break; |
| 1632 | } |
| 1633 | /* link field is used as list of nodes associated with a given label */ |
| 1634 | instr->link = label->link; |
| 1635 | label->link = instr; |
| 1636 | } |
| 1637 | |
| 1638 | static void |
| 1639 | _do_setup(jit_state_t *_jit) |
| 1640 | { |
| 1641 | jit_block_t *block; |
| 1642 | jit_word_t offset; |
| 1643 | |
| 1644 | /* create initial mapping of live register values |
| 1645 | * at the start of a basic block */ |
| 1646 | for (offset = 0; offset < _jitc->blocks.offset; offset++) { |
| 1647 | block = _jitc->blocks.ptr + offset; |
| 1648 | if (!block->label || block->label->code == jit_code_epilog) |
| 1649 | continue; |
| 1650 | jit_setup(block); |
| 1651 | } |
| 1652 | } |
| 1653 | |
| 1654 | static jit_bool_t |
| 1655 | _block_update_set(jit_state_t *_jit, |
| 1656 | jit_block_t *block, jit_block_t *target) |
| 1657 | { |
| 1658 | jit_regset_t regmask; |
| 1659 | |
| 1660 | jit_regset_ior(®mask, &block->reglive, &target->reglive); |
| 1661 | jit_regset_and(®mask, ®mask, &block->regmask); |
| 1662 | if (jit_regset_set_p(®mask)) { |
| 1663 | jit_regset_ior(&block->reglive, &block->reglive, ®mask); |
| 1664 | jit_regset_and(®mask, &block->reglive, &block->regmask); |
| 1665 | jit_regset_com(®mask, ®mask); |
| 1666 | jit_regset_and(&block->regmask, &block->regmask, ®mask); |
| 1667 | block->again = 1; |
| 1668 | return (1); |
| 1669 | } |
| 1670 | return (0); |
| 1671 | } |
| 1672 | |
| 1673 | static jit_bool_t |
| 1674 | _check_block_again(jit_state_t *_jit) |
| 1675 | { |
| 1676 | jit_int32_t todo; |
| 1677 | jit_word_t offset; |
| 1678 | jit_node_t *node, *label; |
| 1679 | jit_block_t *block, *target; |
| 1680 | |
| 1681 | todo = 0; |
| 1682 | for (offset = 0; offset < _jitc->blocks.offset; offset++) { |
| 1683 | block = _jitc->blocks.ptr + offset; |
| 1684 | if (block->again) { |
| 1685 | todo = 1; |
| 1686 | break; |
| 1687 | } |
| 1688 | } |
| 1689 | /* If no block changed state */ |
| 1690 | if (!todo) |
| 1691 | return (0); |
| 1692 | |
| 1693 | do { |
| 1694 | todo = 0; |
| 1695 | block = NULL; |
| 1696 | for (node = _jitc->head; node; node = node->next) { |
| 1697 | /* Special jumps that match jit_cc_a0_jmp */ |
| 1698 | if (node->code == jit_code_calli || node->code == jit_code_callr) |
| 1699 | continue; |
| 1700 | |
| 1701 | /* Remember current label */ |
| 1702 | if (node->code == jit_code_label || |
| 1703 | node->code == jit_code_prolog || |
| 1704 | node->code == jit_code_epilog) { |
| 1705 | |
| 1706 | /* If previous block does not pass through */ |
| 1707 | if (!(node->flag & jit_flag_head)) |
| 1708 | block = NULL; |
| 1709 | |
| 1710 | target = _jitc->blocks.ptr + node->v.w; |
| 1711 | /* Update if previous block pass through */ |
| 1712 | if (block && block->again && block_update_set(target, block)) |
| 1713 | todo = 1; |
| 1714 | block = target; |
| 1715 | if (!block->again) |
| 1716 | continue; |
| 1717 | } |
| 1718 | /* If not the first jmpi */ |
| 1719 | else if (block) { |
| 1720 | /* If a jump to dynamic address or if a jump to raw address */ |
| 1721 | if (!(jit_classify(node->code) & jit_cc_a0_jmp) || |
| 1722 | !(node->flag & jit_flag_node)) |
| 1723 | continue; |
| 1724 | label = node->u.n; |
| 1725 | /* Mark predecessor needs updating due to target change */ |
| 1726 | target = _jitc->blocks.ptr + label->v.w; |
| 1727 | if (target->again && block_update_set(block, target)) |
| 1728 | todo = 1; |
| 1729 | } |
| 1730 | } |
| 1731 | } |
| 1732 | while (todo); |
| 1733 | |
| 1734 | return (1); |
| 1735 | } |
| 1736 | |
| 1737 | static void |
| 1738 | _do_follow(jit_state_t *_jit, jit_bool_t always) |
| 1739 | { |
| 1740 | jit_block_t *block; |
| 1741 | jit_word_t offset; |
| 1742 | |
| 1743 | /* set live state of registers not referenced in a block, but |
| 1744 | * referenced in a jump target or normal flow */ |
| 1745 | for (offset = 0; offset < _jitc->blocks.offset; offset++) { |
| 1746 | block = _jitc->blocks.ptr + offset; |
| 1747 | if (!block->label || block->label->code == jit_code_epilog) |
| 1748 | continue; |
| 1749 | if (always || block->again) { |
| 1750 | block->again = 0; |
| 1751 | jit_follow(block); |
| 1752 | } |
| 1753 | } |
| 1754 | } |
| 1755 | |
| 1756 | void |
| 1757 | _jit_optimize(jit_state_t *_jit) |
| 1758 | { |
| 1759 | jit_bool_t jump; |
| 1760 | jit_bool_t todo; |
| 1761 | jit_int32_t mask; |
| 1762 | jit_node_t *node; |
| 1763 | jit_block_t *block; |
| 1764 | jit_word_t offset; |
| 1765 | |
| 1766 | todo = 0; |
| 1767 | _jitc->function = NULL; |
| 1768 | |
| 1769 | thread_jumps(); |
| 1770 | sequential_labels(); |
| 1771 | split_branches(); |
| 1772 | do_setup(); |
| 1773 | do_follow(1); |
| 1774 | |
| 1775 | patch_registers(); |
| 1776 | if (simplify()) |
| 1777 | todo = 1; |
| 1778 | |
| 1779 | /* Figure out labels that are only reached with a jump |
| 1780 | * and is required to do a simple redundant_store removal |
| 1781 | * on jit_beqi below */ |
| 1782 | jump = 1; |
| 1783 | for (node = _jitc->head; node; node = node->next) { |
| 1784 | switch (node->code) { |
| 1785 | case jit_code_label: |
| 1786 | if (!jump) |
| 1787 | node->flag |= jit_flag_head; |
| 1788 | break; |
| 1789 | case jit_code_jmpi: case jit_code_jmpr: |
| 1790 | case jit_code_epilog: |
| 1791 | jump = 1; |
| 1792 | break; |
| 1793 | case jit_code_data: case jit_code_note: |
| 1794 | break; |
| 1795 | default: |
| 1796 | jump = 0; |
| 1797 | break; |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | for (node = _jitc->head; node; node = node->next) { |
| 1802 | mask = jit_classify(node->code); |
| 1803 | if (mask & jit_cc_a0_reg) |
| 1804 | node->u.w &= ~jit_regno_patch; |
| 1805 | if (mask & jit_cc_a1_reg) |
| 1806 | node->v.w &= ~jit_regno_patch; |
| 1807 | if (mask & jit_cc_a2_reg) |
| 1808 | node->w.w &= ~jit_regno_patch; |
| 1809 | if (node->code == jit_code_beqi) { |
| 1810 | if (redundant_store(node, 1)) { |
| 1811 | block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w; |
| 1812 | block->again = 1; |
| 1813 | todo = 1; |
| 1814 | } |
| 1815 | } |
| 1816 | else if (node->code == jit_code_bnei) { |
| 1817 | if (redundant_store(node, 0)) { |
| 1818 | block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w; |
| 1819 | block->again = 1; |
| 1820 | todo = 1; |
| 1821 | } |
| 1822 | } |
| 1823 | } |
| 1824 | |
| 1825 | if (!todo) |
| 1826 | todo = check_block_again(); |
| 1827 | |
| 1828 | /* If instructions were removed or first pass did modify the entry |
| 1829 | * state of any block */ |
| 1830 | if (todo) { |
| 1831 | do_setup(); |
| 1832 | todo = 0; |
| 1833 | do { |
| 1834 | do_follow(0); |
| 1835 | /* If any block again has the entry state modified. */ |
| 1836 | todo = check_block_again(); |
| 1837 | } while (todo); |
| 1838 | } |
| 1839 | |
| 1840 | for (node = _jitc->head; node; node = node->next) { |
| 1841 | mask = jit_classify(node->code); |
| 1842 | if (mask & jit_cc_a0_reg) |
| 1843 | node->u.w &= ~jit_regno_patch; |
| 1844 | if (mask & jit_cc_a1_reg) |
| 1845 | node->v.w &= ~jit_regno_patch; |
| 1846 | if (mask & jit_cc_a2_reg) |
| 1847 | node->w.w &= ~jit_regno_patch; |
| 1848 | if (node->code == jit_code_prolog) |
| 1849 | _jitc->function = _jitc->functions.ptr + node->w.w; |
| 1850 | else if(node->code == jit_code_epilog) |
| 1851 | _jitc->function = NULL; |
| 1852 | else { |
| 1853 | #if JIT_HASH_CONSTS |
| 1854 | if (mask & jit_cc_a0_flt) { |
| 1855 | node->u.p = jit_data(&node->u.f, sizeof(jit_float32_t), 4); |
| 1856 | node->flag |= jit_flag_node | jit_flag_data; |
| 1857 | } |
| 1858 | else if (mask & jit_cc_a0_dbl) { |
| 1859 | node->u.p = jit_data(&node->u.d, sizeof(jit_float64_t), 8); |
| 1860 | node->flag |= jit_flag_node | jit_flag_data; |
| 1861 | } |
| 1862 | else if (mask & jit_cc_a1_flt) { |
| 1863 | node->v.p = jit_data(&node->v.f, sizeof(jit_float32_t), 4); |
| 1864 | node->flag |= jit_flag_node | jit_flag_data; |
| 1865 | } |
| 1866 | else if (mask & jit_cc_a1_dbl) { |
| 1867 | node->v.p = jit_data(&node->v.d, sizeof(jit_float64_t), 8); |
| 1868 | node->flag |= jit_flag_node | jit_flag_data; |
| 1869 | } |
| 1870 | else if (mask & jit_cc_a2_flt) { |
| 1871 | node->w.p = jit_data(&node->w.f, sizeof(jit_float32_t), 4); |
| 1872 | node->flag |= jit_flag_node | jit_flag_data; |
| 1873 | } |
| 1874 | else if (mask & jit_cc_a2_dbl) { |
| 1875 | node->w.p = jit_data(&node->w.d, sizeof(jit_float64_t), 8); |
| 1876 | node->flag |= jit_flag_node | jit_flag_data; |
| 1877 | } |
| 1878 | #endif |
| 1879 | if (_jitc->function) { |
| 1880 | if ((mask & (jit_cc_a0_reg|jit_cc_a0_chg)) == |
| 1881 | (jit_cc_a0_reg|jit_cc_a0_chg)) { |
| 1882 | if (mask & jit_cc_a0_rlh) { |
| 1883 | jit_regset_setbit(&_jitc->function->regset, |
| 1884 | jit_regno(node->u.q.l)); |
| 1885 | jit_regset_setbit(&_jitc->function->regset, |
| 1886 | jit_regno(node->u.q.h)); |
| 1887 | } |
| 1888 | else |
| 1889 | jit_regset_setbit(&_jitc->function->regset, |
| 1890 | jit_regno(node->u.w)); |
| 1891 | } |
| 1892 | if ((mask & (jit_cc_a1_reg|jit_cc_a1_chg)) == |
| 1893 | (jit_cc_a1_reg|jit_cc_a1_chg)) |
| 1894 | jit_regset_setbit(&_jitc->function->regset, |
| 1895 | jit_regno(node->v.w)); |
| 1896 | if ((mask & (jit_cc_a2_reg|jit_cc_a2_chg)) == |
| 1897 | (jit_cc_a2_reg|jit_cc_a2_chg)) |
| 1898 | jit_regset_setbit(&_jitc->function->regset, |
| 1899 | jit_regno(node->w.w)); |
| 1900 | } |
| 1901 | } |
| 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | void |
| 1906 | _jit_reglive(jit_state_t *_jit, jit_node_t *node) |
| 1907 | { |
| 1908 | jit_int32_t spec; |
| 1909 | jit_int32_t value; |
| 1910 | jit_block_t *block; |
| 1911 | |
| 1912 | switch (node->code) { |
| 1913 | case jit_code_label: case jit_code_prolog: case jit_code_epilog: |
| 1914 | block = _jitc->blocks.ptr + node->v.w; |
| 1915 | jit_regset_set(&_jitc->reglive, &block->reglive); |
| 1916 | break; |
| 1917 | case jit_code_callr: |
| 1918 | value = jit_regno(node->u.w); |
| 1919 | if (!(node->u.w & jit_regno_patch)) { |
| 1920 | jit_regset_setbit(&_jitc->reglive, value); |
| 1921 | } |
| 1922 | case jit_code_calli: |
| 1923 | for (value = 0; value < _jitc->reglen; value++) { |
| 1924 | spec = jit_class(_rvs[value].spec); |
| 1925 | if ((spec & jit_class_arg) && jit_regarg_p(node, value)) |
| 1926 | jit_regset_setbit(&_jitc->reglive, value); |
| 1927 | else if (!(spec & jit_class_sav)) |
| 1928 | jit_regset_clrbit(&_jitc->reglive, value); |
| 1929 | } |
| 1930 | break; |
| 1931 | default: |
| 1932 | value = jit_classify(node->code); |
| 1933 | if (value & jit_cc_a0_reg) { |
| 1934 | if (value & jit_cc_a0_rlh) { |
| 1935 | if (!(node->u.q.l & jit_regno_patch)) { |
| 1936 | if (value & jit_cc_a0_chg) { |
| 1937 | jit_regset_clrbit(&_jitc->reglive, node->u.q.l); |
| 1938 | jit_regset_setbit(&_jitc->regmask, node->u.q.l); |
| 1939 | } |
| 1940 | else |
| 1941 | jit_regset_setbit(&_jitc->reglive, node->u.q.l); |
| 1942 | } |
| 1943 | if (!(node->u.q.h & jit_regno_patch)) { |
| 1944 | if (value & jit_cc_a0_chg) { |
| 1945 | jit_regset_clrbit(&_jitc->reglive, node->u.q.h); |
| 1946 | jit_regset_setbit(&_jitc->regmask, node->u.q.h); |
| 1947 | } |
| 1948 | else |
| 1949 | jit_regset_setbit(&_jitc->reglive, node->u.q.h); |
| 1950 | } |
| 1951 | } |
| 1952 | else { |
| 1953 | if (!(node->u.w & jit_regno_patch)) { |
| 1954 | if (value & jit_cc_a0_chg) { |
| 1955 | jit_regset_clrbit(&_jitc->reglive, node->u.w); |
| 1956 | jit_regset_setbit(&_jitc->regmask, node->u.w); |
| 1957 | } |
| 1958 | else |
| 1959 | jit_regset_setbit(&_jitc->reglive, node->u.w); |
| 1960 | } |
| 1961 | } |
| 1962 | } |
| 1963 | if ((value & jit_cc_a1_reg) && !(node->v.w & jit_regno_patch)) { |
| 1964 | if (value & jit_cc_a1_chg) { |
| 1965 | jit_regset_clrbit(&_jitc->reglive, node->v.w); |
| 1966 | jit_regset_setbit(&_jitc->regmask, node->v.w); |
| 1967 | } |
| 1968 | else |
| 1969 | jit_regset_setbit(&_jitc->reglive, node->v.w); |
| 1970 | } |
| 1971 | if (value & jit_cc_a2_reg) { |
| 1972 | if (value & jit_cc_a2_rlh) { |
| 1973 | /* Assume registers are not changed */ |
| 1974 | if (!(node->w.q.l & jit_regno_patch)) |
| 1975 | jit_regset_setbit(&_jitc->reglive, node->w.q.l); |
| 1976 | if (!(node->w.q.h & jit_regno_patch)) |
| 1977 | jit_regset_setbit(&_jitc->reglive, node->w.q.h); |
| 1978 | } |
| 1979 | else { |
| 1980 | if (!(node->w.w & jit_regno_patch)) { |
| 1981 | if (value & jit_cc_a2_chg) { |
| 1982 | jit_regset_clrbit(&_jitc->reglive, node->w.w); |
| 1983 | jit_regset_setbit(&_jitc->regmask, node->w.w); |
| 1984 | } |
| 1985 | else |
| 1986 | jit_regset_setbit(&_jitc->reglive, node->w.w); |
| 1987 | } |
| 1988 | } |
| 1989 | } |
| 1990 | if (jit_regset_set_p(&_jitc->regmask)) { |
| 1991 | jit_update(node->next, &_jitc->reglive, &_jitc->regmask); |
| 1992 | if (jit_regset_set_p(&_jitc->regmask)) { |
| 1993 | /* any unresolved live state is considered as live */ |
| 1994 | jit_regset_ior(&_jitc->reglive, |
| 1995 | &_jitc->reglive, &_jitc->regmask); |
| 1996 | jit_regset_set_ui(&_jitc->regmask, 0); |
| 1997 | } |
| 1998 | } |
| 1999 | break; |
| 2000 | } |
| 2001 | } |
| 2002 | |
| 2003 | void |
| 2004 | _jit_regarg_set(jit_state_t *_jit, jit_node_t *node, jit_int32_t value) |
| 2005 | { |
| 2006 | #if GET_JIT_SIZE |
| 2007 | jit_size_prepare(); |
| 2008 | #endif |
| 2009 | if (value & jit_cc_a0_reg) { |
| 2010 | if (value & jit_cc_a0_rlh) { |
| 2011 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.l)); |
| 2012 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.h)); |
| 2013 | } |
| 2014 | else |
| 2015 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.w)); |
| 2016 | } |
| 2017 | if (value & jit_cc_a1_reg) |
| 2018 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->v.w)); |
| 2019 | if (value & jit_cc_a2_reg) { |
| 2020 | if (value & jit_cc_a2_rlh) { |
| 2021 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.l)); |
| 2022 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.h)); |
| 2023 | } |
| 2024 | else |
| 2025 | jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.w)); |
| 2026 | } |
| 2027 | } |
| 2028 | |
| 2029 | void |
| 2030 | _jit_regarg_clr(jit_state_t *_jit, jit_node_t *node, jit_int32_t value) |
| 2031 | { |
| 2032 | #if GET_JIT_SIZE |
| 2033 | jit_size_collect(node); |
| 2034 | #endif |
| 2035 | if (value & jit_cc_a0_reg) { |
| 2036 | if (value & jit_cc_a0_rlh) { |
| 2037 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.l)); |
| 2038 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.h)); |
| 2039 | } |
| 2040 | else |
| 2041 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.w)); |
| 2042 | } |
| 2043 | if (value & jit_cc_a1_reg) |
| 2044 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->v.w)); |
| 2045 | if (value & jit_cc_a2_reg) { |
| 2046 | if (value & jit_cc_a2_rlh) { |
| 2047 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.l)); |
| 2048 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.h)); |
| 2049 | } |
| 2050 | else |
| 2051 | jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.w)); |
| 2052 | } |
| 2053 | } |
| 2054 | |
| 2055 | void |
| 2056 | _jit_realize(jit_state_t *_jit) |
| 2057 | { |
| 2058 | assert(!_jitc->realize); |
| 2059 | if (_jitc->function) |
| 2060 | jit_epilog(); |
| 2061 | jit_optimize(); |
| 2062 | _jitc->realize = 1; |
| 2063 | |
| 2064 | /* ensure it is aligned */ |
| 2065 | _jitc->data.offset = (_jitc->data.offset + 7) & -8; |
| 2066 | |
| 2067 | #if GET_JIT_SIZE |
| 2068 | /* Heuristic to guess code buffer size */ |
| 2069 | _jitc->mult = 4; |
| 2070 | _jit->code.length = _jitc->pool.length * 1024 * _jitc->mult; |
| 2071 | #else |
| 2072 | _jit->code.length = jit_get_size(); |
| 2073 | #endif |
| 2074 | } |
| 2075 | |
| 2076 | void |
| 2077 | _jit_dataset(jit_state_t *_jit) |
| 2078 | { |
| 2079 | jit_uint8_t *ptr; |
| 2080 | jit_node_t *node; |
| 2081 | jit_word_t offset; |
| 2082 | #if defined(__sgi) |
| 2083 | int mmap_fd; |
| 2084 | #endif |
| 2085 | |
| 2086 | assert(!_jitc->dataset); |
| 2087 | #if !HAVE_MMAP |
| 2088 | assert(_jit->user_data); |
| 2089 | #else |
| 2090 | if (!_jit->user_data) { |
| 2091 | |
| 2092 | /* create read only data buffer */ |
| 2093 | _jit->data.length = (_jitc->data.offset + |
| 2094 | /* reserve space for annotations */ |
| 2095 | _jitc->note.size + 4095) & -4096; |
| 2096 | #if defined(__sgi) |
| 2097 | mmap_fd = open("/dev/zero", O_RDWR); |
| 2098 | #endif |
| 2099 | _jit->data.ptr = mmap(NULL, _jit->data.length, |
| 2100 | PROT_READ | PROT_WRITE, |
| 2101 | MAP_PRIVATE | MAP_ANON, mmap_fd, 0); |
| 2102 | assert(_jit->data.ptr != MAP_FAILED); |
| 2103 | #if defined(__sgi) |
| 2104 | close(mmap_fd); |
| 2105 | #endif |
| 2106 | } |
| 2107 | #endif /* !HAVE_MMAP */ |
| 2108 | |
| 2109 | if (!_jitc->no_data) |
| 2110 | jit_memcpy(_jit->data.ptr, _jitc->data.ptr, _jitc->data.offset); |
| 2111 | |
| 2112 | if (_jitc->no_note) { |
| 2113 | /* Space for one note is always allocated, so revert it here |
| 2114 | * if after jit_new_state was called, it is also requested to |
| 2115 | * not generate annotation information */ |
| 2116 | _jit->note.length = 0; |
| 2117 | _jitc->note.size = 0; |
| 2118 | } |
| 2119 | else { |
| 2120 | _jitc->note.base = _jit->data.ptr; |
| 2121 | if (!_jitc->no_data) |
| 2122 | _jitc->note.base += _jitc->data.offset; |
| 2123 | memset(_jitc->note.base, 0, _jitc->note.size); |
| 2124 | } |
| 2125 | |
| 2126 | if (_jit->user_data) |
| 2127 | /* Need the temporary hashed data until jit_emit is finished */ |
| 2128 | ptr = _jitc->no_data ? _jitc->data.ptr : _jit->data.ptr; |
| 2129 | else { |
| 2130 | ptr = _jit->data.ptr; |
| 2131 | /* Temporary hashed data no longer required */ |
| 2132 | jit_free((jit_pointer_t *)&_jitc->data.ptr); |
| 2133 | } |
| 2134 | |
| 2135 | for (offset = 0; offset < _jitc->data.size; offset++) { |
| 2136 | for (node = _jitc->data.table[offset]; node; node = node->next) { |
| 2137 | node->flag |= jit_flag_patch; |
| 2138 | node->u.w = (jit_word_t)(ptr + node->u.w); |
| 2139 | } |
| 2140 | } |
| 2141 | |
| 2142 | _jitc->dataset = 1; |
| 2143 | } |
| 2144 | |
| 2145 | jit_pointer_t |
| 2146 | _jit_get_code(jit_state_t *_jit, jit_word_t *length) |
| 2147 | { |
| 2148 | assert(_jitc->realize); |
| 2149 | if (length) { |
| 2150 | if (_jitc->done) |
| 2151 | /* If code already generated, return exact size of code */ |
| 2152 | *length = _jit->pc.uc - _jit->code.ptr; |
| 2153 | else |
| 2154 | /* Else return current size of the code buffer */ |
| 2155 | *length = _jit->code.length; |
| 2156 | } |
| 2157 | |
| 2158 | return (_jit->code.ptr); |
| 2159 | } |
| 2160 | |
| 2161 | void |
| 2162 | _jit_set_code(jit_state_t *_jit, jit_pointer_t ptr, jit_word_t length) |
| 2163 | { |
| 2164 | assert(_jitc->realize); |
| 2165 | _jit->code.ptr = ptr; |
| 2166 | _jit->code.length = length; |
| 2167 | _jit->user_code = 1; |
| 2168 | } |
| 2169 | |
| 2170 | jit_pointer_t |
| 2171 | _jit_get_data(jit_state_t *_jit, jit_word_t *data_size, jit_word_t *note_size) |
| 2172 | { |
| 2173 | assert(_jitc->realize); |
| 2174 | if (data_size) |
| 2175 | *data_size = _jitc->data.offset; |
| 2176 | if (note_size) |
| 2177 | *note_size = _jitc->note.size; |
| 2178 | return (_jit->data.ptr); |
| 2179 | } |
| 2180 | |
| 2181 | void |
| 2182 | _jit_set_data(jit_state_t *_jit, jit_pointer_t ptr, |
| 2183 | jit_word_t length, jit_word_t flags) |
| 2184 | { |
| 2185 | assert(_jitc->realize); |
| 2186 | if (flags & JIT_DISABLE_DATA) |
| 2187 | _jitc->no_data = 1; |
| 2188 | else |
| 2189 | assert(length >= _jitc->data.offset); |
| 2190 | if (flags & JIT_DISABLE_NOTE) |
| 2191 | _jitc->no_note = 1; |
| 2192 | else { |
| 2193 | if (flags & JIT_DISABLE_DATA) |
| 2194 | assert(length >= _jitc->note.size); |
| 2195 | else |
| 2196 | assert(length >= _jitc->data.offset + _jitc->note.size); |
| 2197 | } |
| 2198 | _jit->data.ptr = ptr; |
| 2199 | _jit->data.length = length; |
| 2200 | _jit->user_data = 1; |
| 2201 | } |
| 2202 | |
| 2203 | jit_pointer_t |
| 2204 | _jit_emit(jit_state_t *_jit) |
| 2205 | { |
| 2206 | jit_pointer_t code; |
| 2207 | jit_node_t *node; |
| 2208 | size_t length; |
| 2209 | int result; |
| 2210 | #if defined(__sgi) |
| 2211 | int mmap_fd; |
| 2212 | #endif |
| 2213 | int mmap_prot, mmap_flags; |
| 2214 | |
| 2215 | if (!_jitc->realize) |
| 2216 | jit_realize(); |
| 2217 | |
| 2218 | if (!_jitc->dataset) |
| 2219 | jit_dataset(); |
| 2220 | |
| 2221 | _jitc->emit = 1; |
| 2222 | |
| 2223 | #if !HAVE_MMAP |
| 2224 | assert(_jit->user_code); |
| 2225 | #else |
| 2226 | if (!_jit->user_code) { |
| 2227 | mmap_prot = PROT_READ | PROT_WRITE; |
| 2228 | #if !__OpenBSD__ |
| 2229 | mmap_prot |= PROT_EXEC; |
| 2230 | #endif |
| 2231 | #if __NetBSD__ |
| 2232 | mmap_prot = PROT_MPROTECT(mmap_prot); |
| 2233 | mmap_flags = 0; |
| 2234 | #else |
| 2235 | mmap_flags = MAP_PRIVATE; |
| 2236 | #endif |
| 2237 | mmap_flags |= MAP_ANON; |
| 2238 | #if defined(__sgi) |
| 2239 | mmap_fd = open("/dev/zero", O_RDWR); |
| 2240 | #endif |
| 2241 | _jit->code.ptr = mmap(NULL, _jit->code.length, |
| 2242 | mmap_prot, mmap_flags, mmap_fd, 0); |
| 2243 | assert(_jit->code.ptr != MAP_FAILED); |
| 2244 | } |
| 2245 | #endif /* !HAVE_MMAP */ |
| 2246 | _jitc->code.end = _jit->code.ptr + _jit->code.length - |
| 2247 | jit_get_max_instr(); |
| 2248 | _jit->pc.uc = _jit->code.ptr; |
| 2249 | |
| 2250 | for (;;) { |
| 2251 | #if __NetBSD__ |
| 2252 | result = mprotect(_jit->code.ptr, _jit->code.length, |
| 2253 | PROT_READ | PROT_WRITE); |
| 2254 | assert(result == 0); |
| 2255 | #endif |
| 2256 | if ((code = emit_code()) == NULL) { |
| 2257 | _jitc->patches.offset = 0; |
| 2258 | for (node = _jitc->head; node; node = node->next) { |
| 2259 | if (node->link && |
| 2260 | (node->code == jit_code_label || |
| 2261 | node->code == jit_code_epilog)) |
| 2262 | node->flag &= ~jit_flag_patch; |
| 2263 | } |
| 2264 | #if !HAVE_MMAP |
| 2265 | assert(_jit->user_code); |
| 2266 | #else |
| 2267 | if (_jit->user_code) |
| 2268 | goto fail; |
| 2269 | #if GET_JIT_SIZE |
| 2270 | ++_jitc->mult; |
| 2271 | length = _jitc->pool.length * 1024 * _jitc->mult; |
| 2272 | #else |
| 2273 | /* Should only happen on very special cases */ |
| 2274 | length = _jit->code.length + 4096; |
| 2275 | #endif |
| 2276 | |
| 2277 | #if !HAVE_MREMAP |
| 2278 | munmap(_jit->code.ptr, _jit->code.length); |
| 2279 | #endif |
| 2280 | |
| 2281 | #if HAVE_MREMAP |
| 2282 | # if __NetBSD__ |
| 2283 | _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length, |
| 2284 | _jit->code.ptr, length, 0); |
| 2285 | # else |
| 2286 | _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length, |
| 2287 | length, MREMAP_MAYMOVE, NULL); |
| 2288 | # endif |
| 2289 | #else |
| 2290 | _jit->code.ptr = mmap(NULL, length, |
| 2291 | PROT_EXEC | PROT_READ | PROT_WRITE, |
| 2292 | MAP_PRIVATE | MAP_ANON, mmap_fd, 0); |
| 2293 | #endif |
| 2294 | |
| 2295 | assert(_jit->code.ptr != MAP_FAILED); |
| 2296 | _jit->code.length = length; |
| 2297 | _jitc->code.end = _jit->code.ptr + _jit->code.length - |
| 2298 | jit_get_max_instr(); |
| 2299 | _jit->pc.uc = _jit->code.ptr; |
| 2300 | #endif /* !HAVE_MMAP */ |
| 2301 | } |
| 2302 | else |
| 2303 | break; |
| 2304 | } |
| 2305 | |
| 2306 | #if defined(__sgi) |
| 2307 | if (!_jit->user_code) |
| 2308 | close(mmap_fd); |
| 2309 | #endif |
| 2310 | |
| 2311 | _jitc->done = 1; |
| 2312 | if (!_jitc->no_note) |
| 2313 | jit_annotate(); |
| 2314 | |
| 2315 | if (_jit->user_data) |
| 2316 | jit_free((jit_pointer_t *)&_jitc->data.ptr); |
| 2317 | #if HAVE_MMAP |
| 2318 | else { |
| 2319 | result = mprotect(_jit->data.ptr, |
| 2320 | _jit->data.length, PROT_READ); |
| 2321 | assert(result == 0); |
| 2322 | } |
| 2323 | if (!_jit->user_code) { |
| 2324 | length = _jit->pc.uc - _jit->code.ptr; |
| 2325 | # if __riscv && __WORDSIZE == 64 |
| 2326 | /* FIXME should start adding consts at a page boundary */ |
| 2327 | length -= _jitc->consts.hash.count * sizeof(jit_word_t); |
| 2328 | # endif |
| 2329 | result = mprotect(_jit->code.ptr, length, PROT_READ | PROT_EXEC); |
| 2330 | assert(result == 0); |
| 2331 | } |
| 2332 | #endif /* HAVE_MMAP */ |
| 2333 | |
| 2334 | return (_jit->code.ptr); |
| 2335 | fail: |
| 2336 | return (NULL); |
| 2337 | } |
| 2338 | |
| 2339 | void |
| 2340 | _jit_frame(jit_state_t *_jit, jit_int32_t frame) |
| 2341 | { |
| 2342 | jit_trampoline(frame, 1); |
| 2343 | } |
| 2344 | |
| 2345 | void |
| 2346 | _jit_tramp(jit_state_t *_jit, jit_int32_t frame) |
| 2347 | { |
| 2348 | jit_trampoline(frame, 0); |
| 2349 | } |
| 2350 | |
| 2351 | void |
| 2352 | _jit_trampoline(jit_state_t *_jit, jit_int32_t frame, jit_bool_t prolog) |
| 2353 | { |
| 2354 | jit_int32_t regno; |
| 2355 | |
| 2356 | /* Must be called after prolog, actually, just to simplify |
| 2357 | * tests and know there is a current function and that |
| 2358 | * _jitc->function->self.aoff is at the before any alloca value */ |
| 2359 | assert(_jitc->tail && _jitc->tail->code == jit_code_prolog); |
| 2360 | |
| 2361 | /* + 24 for 3 possible spilled temporaries (that could be a double) */ |
| 2362 | frame += 24; |
| 2363 | #if defined(__hppa__) |
| 2364 | frame += _jitc->function->self.aoff; |
| 2365 | #else |
| 2366 | frame -= _jitc->function->self.aoff; |
| 2367 | #endif |
| 2368 | _jitc->function->frame = frame; |
| 2369 | if (prolog) |
| 2370 | _jitc->function->define_frame = 1; |
| 2371 | else |
| 2372 | _jitc->function->assume_frame = 1; |
| 2373 | for (regno = 0; regno < _jitc->reglen; regno++) |
| 2374 | if (jit_class(_rvs[regno].spec) & jit_class_sav) |
| 2375 | jit_regset_setbit(&_jitc->function->regset, regno); |
| 2376 | } |
| 2377 | |
| 2378 | /* Compute initial reglive and regmask set values of a basic block. |
| 2379 | * reglive is the set of known live registers |
| 2380 | * regmask is the set of registers not referenced in the block |
| 2381 | * Registers in regmask might be live. |
| 2382 | */ |
| 2383 | static void |
| 2384 | _jit_setup(jit_state_t *_jit, jit_block_t *block) |
| 2385 | { |
| 2386 | jit_node_t *node; |
| 2387 | jit_bool_t live; |
| 2388 | unsigned long value; |
| 2389 | |
| 2390 | jit_regset_set_mask(&block->regmask, _jitc->reglen); |
| 2391 | for (value = 0; value < _jitc->reglen; ++value) |
| 2392 | if (!(jit_class(_rvs[value].spec) & (jit_class_gpr|jit_class_fpr))) |
| 2393 | jit_regset_clrbit(&block->regmask, value); |
| 2394 | |
| 2395 | for (node = block->label->next; node; node = node->next) { |
| 2396 | switch (node->code) { |
| 2397 | case jit_code_label: case jit_code_prolog: |
| 2398 | case jit_code_epilog: |
| 2399 | return; |
| 2400 | default: |
| 2401 | /* Check argument registers in reverse order to properly |
| 2402 | * handle registers that are both, argument and result */ |
| 2403 | value = jit_classify(node->code); |
| 2404 | if ((value & jit_cc_a2_reg) && |
| 2405 | !(node->w.w & jit_regno_patch) && |
| 2406 | jit_regset_tstbit(&block->regmask, node->w.w)) { |
| 2407 | live = !(value & jit_cc_a2_chg); |
| 2408 | jit_regset_clrbit(&block->regmask, node->w.w); |
| 2409 | if (live) |
| 2410 | jit_regset_setbit(&block->reglive, node->w.w); |
| 2411 | } |
| 2412 | if ((value & jit_cc_a1_reg) && |
| 2413 | !(node->v.w & jit_regno_patch) && |
| 2414 | jit_regset_tstbit(&block->regmask, node->v.w)) { |
| 2415 | live = !(value & jit_cc_a1_chg); |
| 2416 | jit_regset_clrbit(&block->regmask, node->v.w); |
| 2417 | if (live) |
| 2418 | jit_regset_setbit(&block->reglive, node->v.w); |
| 2419 | } |
| 2420 | if (value & jit_cc_a0_reg) { |
| 2421 | live = !(value & jit_cc_a0_chg); |
| 2422 | if (value & jit_cc_a0_rlh) { |
| 2423 | if (!(node->u.q.l & jit_regno_patch) && |
| 2424 | jit_regset_tstbit(&block->regmask, node->u.q.l)) { |
| 2425 | jit_regset_clrbit(&block->regmask, node->u.q.l); |
| 2426 | if (live) |
| 2427 | jit_regset_setbit(&block->reglive, node->u.q.l); |
| 2428 | } |
| 2429 | if (!(node->u.q.h & jit_regno_patch) && |
| 2430 | jit_regset_tstbit(&block->regmask, node->u.q.h)) { |
| 2431 | jit_regset_clrbit(&block->regmask, node->u.q.h); |
| 2432 | if (live) |
| 2433 | jit_regset_setbit(&block->reglive, node->u.q.h); |
| 2434 | } |
| 2435 | } |
| 2436 | else { |
| 2437 | if (!(node->u.w & jit_regno_patch) && |
| 2438 | jit_regset_tstbit(&block->regmask, node->u.w)) { |
| 2439 | jit_regset_clrbit(&block->regmask, node->u.w); |
| 2440 | if (live) |
| 2441 | jit_regset_setbit(&block->reglive, node->u.w); |
| 2442 | } |
| 2443 | } |
| 2444 | } |
| 2445 | break; |
| 2446 | } |
| 2447 | } |
| 2448 | } |
| 2449 | |
| 2450 | /* Update regmask and reglive of blocks at entry point of branch targets |
| 2451 | * or normal flow that have a live register not used in this block. |
| 2452 | */ |
| 2453 | static void |
| 2454 | _jit_follow(jit_state_t *_jit, jit_block_t *block) |
| 2455 | { |
| 2456 | jit_node_t *node; |
| 2457 | jit_block_t *next; |
| 2458 | jit_int32_t spec; |
| 2459 | jit_int32_t regno; |
| 2460 | unsigned long value; |
| 2461 | jit_node_t *label; |
| 2462 | jit_regset_t reglive; |
| 2463 | jit_regset_t regmask; |
| 2464 | jit_regset_t regtemp; |
| 2465 | |
| 2466 | jit_regset_set(®live, &block->reglive); |
| 2467 | jit_regset_set(®mask, &block->regmask); |
| 2468 | for (node = block->label->next; node; node = node->next) { |
| 2469 | switch (node->code) { |
| 2470 | case jit_code_label: |
| 2471 | /* Do not consider jmpi and jmpr cannot jump to the |
| 2472 | * next instruction. */ |
| 2473 | next = _jitc->blocks.ptr + node->v.w; |
| 2474 | /* Set of live registers in next block that are at unknown |
| 2475 | * state in this block. */ |
| 2476 | jit_regset_and(®temp, ®mask, &next->reglive); |
| 2477 | if (jit_regset_set_p(®temp)) { |
| 2478 | /* Add live state of next block to current block. */ |
| 2479 | jit_regset_ior(&block->reglive, &block->reglive, ®temp); |
| 2480 | /* Remove from unknown state bitmask. */ |
| 2481 | jit_regset_com(®temp, ®temp); |
| 2482 | jit_regset_and(&block->regmask, &block->regmask, ®temp); |
| 2483 | block->again = 1; |
| 2484 | } |
| 2485 | case jit_code_prolog: |
| 2486 | case jit_code_epilog: |
| 2487 | return; |
| 2488 | case jit_code_callr: |
| 2489 | value = jit_regno(node->u.w); |
| 2490 | if (!(node->u.w & jit_regno_patch)) { |
| 2491 | if (jit_regset_tstbit(®mask, value)) { |
| 2492 | jit_regset_clrbit(®mask, value); |
| 2493 | jit_regset_setbit(®live, value); |
| 2494 | } |
| 2495 | } |
| 2496 | case jit_code_calli: |
| 2497 | for (value = 0; value < _jitc->reglen; ++value) { |
| 2498 | value = jit_regset_scan1(®mask, value); |
| 2499 | if (value >= _jitc->reglen) |
| 2500 | break; |
| 2501 | spec = jit_class(_rvs[value].spec); |
| 2502 | if (!(spec & jit_class_sav)) |
| 2503 | jit_regset_clrbit(®mask, value); |
| 2504 | if ((spec & jit_class_arg) && jit_regarg_p(node, value)) |
| 2505 | jit_regset_setbit(®live, value); |
| 2506 | } |
| 2507 | break; |
| 2508 | default: |
| 2509 | value = jit_classify(node->code); |
| 2510 | if (value & jit_cc_a2_reg) { |
| 2511 | if (value & jit_cc_a2_rlh) { |
| 2512 | if (!(node->w.q.l & jit_regno_patch)) { |
| 2513 | /* Assume register is not changed */ |
| 2514 | if (jit_regset_tstbit(®mask, node->w.q.l)) |
| 2515 | jit_regset_clrbit(®mask, node->w.q.l); |
| 2516 | } |
| 2517 | if (!(node->w.q.h & jit_regno_patch)) { |
| 2518 | if (jit_regset_tstbit(®mask, node->w.q.h)) |
| 2519 | jit_regset_clrbit(®mask, node->w.q.h); |
| 2520 | } |
| 2521 | } |
| 2522 | else { |
| 2523 | if (value & jit_cc_a2_reg) { |
| 2524 | if (!(node->w.w & jit_regno_patch)) { |
| 2525 | if (jit_regset_tstbit(®mask, node->w.w)) { |
| 2526 | jit_regset_clrbit(®mask, node->w.w); |
| 2527 | if (!(value & jit_cc_a2_chg)) |
| 2528 | jit_regset_setbit(®live, node->w.w); |
| 2529 | } |
| 2530 | } |
| 2531 | } |
| 2532 | } |
| 2533 | } |
| 2534 | if (value & jit_cc_a1_reg) { |
| 2535 | if (!(node->v.w & jit_regno_patch)) { |
| 2536 | if (jit_regset_tstbit(®mask, node->v.w)) { |
| 2537 | jit_regset_clrbit(®mask, node->v.w); |
| 2538 | if (!(value & jit_cc_a1_chg)) |
| 2539 | jit_regset_setbit(®live, node->v.w); |
| 2540 | } |
| 2541 | } |
| 2542 | } |
| 2543 | if (value & jit_cc_a0_reg) { |
| 2544 | if (value & jit_cc_a0_rlh) { |
| 2545 | if (!(node->u.q.l & jit_regno_patch)) { |
| 2546 | if (jit_regset_tstbit(®mask, node->u.q.l)) { |
| 2547 | jit_regset_clrbit(®mask, node->u.q.l); |
| 2548 | if (!(value & jit_cc_a0_chg)) |
| 2549 | jit_regset_setbit(®live, node->u.q.l); |
| 2550 | } |
| 2551 | } |
| 2552 | if (!(node->u.q.h & jit_regno_patch)) { |
| 2553 | if (jit_regset_tstbit(®mask, node->u.q.h)) { |
| 2554 | jit_regset_clrbit(®mask, node->u.q.h); |
| 2555 | if (!(value & jit_cc_a0_chg)) |
| 2556 | jit_regset_setbit(®live, node->u.q.h); |
| 2557 | } |
| 2558 | } |
| 2559 | } |
| 2560 | else { |
| 2561 | if (!(node->u.w & jit_regno_patch)) { |
| 2562 | if (jit_regset_tstbit(®mask, node->u.w)) { |
| 2563 | jit_regset_clrbit(®mask, node->u.w); |
| 2564 | if (!(value & jit_cc_a0_chg)) |
| 2565 | jit_regset_setbit(®live, node->u.w); |
| 2566 | } |
| 2567 | } |
| 2568 | } |
| 2569 | } |
| 2570 | if (value & jit_cc_a0_jmp) { |
| 2571 | if (node->flag & jit_flag_node) { |
| 2572 | label = node->u.n; |
| 2573 | /* Do not consider jmpi and jmpr cannot jump to the |
| 2574 | * next instruction. */ |
| 2575 | next = _jitc->blocks.ptr + label->v.w; |
| 2576 | jit_regset_and(®temp, ®mask, &next->reglive); |
| 2577 | if (jit_regset_set_p(®temp)) { |
| 2578 | /* Add live state. */ |
| 2579 | jit_regset_ior(&block->reglive, |
| 2580 | &block->reglive, ®temp); |
| 2581 | /* Remove from unknown state bitmask. */ |
| 2582 | jit_regset_com(®temp, ®temp); |
| 2583 | jit_regset_and(&block->regmask, |
| 2584 | &block->regmask, ®temp); |
| 2585 | block->again = 1; |
| 2586 | } |
| 2587 | } |
| 2588 | else { |
| 2589 | /* Jump to unknown location. |
| 2590 | * This is a pitfall of the implementation. |
| 2591 | * Only jmpi to not a jit code should reach here, |
| 2592 | * or a jmpr of a computed address. |
| 2593 | * Because the implementation needs jit_class_nospill |
| 2594 | * registers, must treat jmpr as a function call. This |
| 2595 | * means that only JIT_Vn registers can be trusted on |
| 2596 | * arrival of jmpr. |
| 2597 | */ |
| 2598 | jit_regset_set_ui(®mask, 0); |
| 2599 | for (regno = 0; regno < _jitc->reglen; regno++) { |
| 2600 | spec = jit_class(_rvs[regno].spec); |
| 2601 | if ((spec & (jit_class_gpr|jit_class_fpr)) && |
| 2602 | (spec & jit_class_sav)) |
| 2603 | jit_regset_setbit(®mask, regno); |
| 2604 | } |
| 2605 | /* Assume non callee save registers are live due |
| 2606 | * to jump to unknown location. */ |
| 2607 | /* Treat all callee save as live. */ |
| 2608 | jit_regset_ior(&block->reglive, ®live, ®mask); |
| 2609 | /* Treat anything else as dead. */ |
| 2610 | return; |
| 2611 | } |
| 2612 | } |
| 2613 | break; |
| 2614 | } |
| 2615 | } |
| 2616 | } |
| 2617 | |
| 2618 | /* Follow code generation up to finding a label or end of code. |
| 2619 | * When finding a label, update the set of live registers. |
| 2620 | * On branches, update based on taken branch or normal flow. |
| 2621 | */ |
| 2622 | static void |
| 2623 | _jit_update(jit_state_t *_jit, jit_node_t *node, |
| 2624 | jit_regset_t *live, jit_regset_t *mask) |
| 2625 | { |
| 2626 | jit_int32_t spec; |
| 2627 | jit_int32_t regno; |
| 2628 | unsigned long value; |
| 2629 | jit_block_t *block; |
| 2630 | jit_node_t *label; |
| 2631 | jit_regset_t regtemp; |
| 2632 | |
| 2633 | for (; node; node = node->next) { |
| 2634 | if (jit_regset_set_p(mask) == 0) |
| 2635 | break; |
| 2636 | switch (node->code) { |
| 2637 | case jit_code_label: |
| 2638 | block = _jitc->blocks.ptr + node->v.w; |
| 2639 | jit_regset_and(®temp, mask, &block->reglive); |
| 2640 | if (jit_regset_set_p(®temp)) { |
| 2641 | /* Add live state. */ |
| 2642 | jit_regset_ior(live, live, ®temp); |
| 2643 | /* Remove from unknown state bitmask. */ |
| 2644 | jit_regset_com(®temp, ®temp); |
| 2645 | jit_regset_and(mask, mask, ®temp); |
| 2646 | } |
| 2647 | return; |
| 2648 | case jit_code_prolog: |
| 2649 | jit_regset_set_ui(mask, 0); |
| 2650 | return; |
| 2651 | case jit_code_epilog: |
| 2652 | jit_regset_set_ui(mask, 0); |
| 2653 | return; |
| 2654 | case jit_code_callr: |
| 2655 | value = jit_regno(node->u.w); |
| 2656 | if (!(node->u.w & jit_regno_patch)) { |
| 2657 | if (jit_regset_tstbit(mask, value)) { |
| 2658 | jit_regset_clrbit(mask, value); |
| 2659 | jit_regset_setbit(live, value); |
| 2660 | } |
| 2661 | } |
| 2662 | case jit_code_calli: |
| 2663 | for (value = 0; value < _jitc->reglen; ++value) { |
| 2664 | value = jit_regset_scan1(mask, value); |
| 2665 | if (value >= _jitc->reglen) |
| 2666 | break; |
| 2667 | spec = jit_class(_rvs[value].spec); |
| 2668 | if (!(spec & jit_class_sav)) |
| 2669 | jit_regset_clrbit(mask, value); |
| 2670 | if ((spec & jit_class_arg) && jit_regarg_p(node, value)) |
| 2671 | jit_regset_setbit(live, value); |
| 2672 | } |
| 2673 | break; |
| 2674 | default: |
| 2675 | value = jit_classify(node->code); |
| 2676 | if (value & jit_cc_a2_reg) { |
| 2677 | if (value & jit_cc_a2_rlh) { |
| 2678 | if (!(node->w.q.l & jit_regno_patch)) { |
| 2679 | /* Assume register is not changed */ |
| 2680 | if (jit_regset_tstbit(mask, node->w.q.l)) |
| 2681 | jit_regset_clrbit(mask, node->w.q.l); |
| 2682 | } |
| 2683 | if (!(node->w.q.h & jit_regno_patch)) { |
| 2684 | if (jit_regset_tstbit(mask, node->w.q.h)) |
| 2685 | jit_regset_clrbit(mask, node->w.q.h); |
| 2686 | } |
| 2687 | } |
| 2688 | else { |
| 2689 | if (!(node->w.w & jit_regno_patch)) { |
| 2690 | if (jit_regset_tstbit(mask, node->w.w)) { |
| 2691 | jit_regset_clrbit(mask, node->w.w); |
| 2692 | if (!(value & jit_cc_a2_chg)) |
| 2693 | jit_regset_setbit(live, node->w.w); |
| 2694 | } |
| 2695 | } |
| 2696 | } |
| 2697 | } |
| 2698 | if (value & jit_cc_a1_reg) { |
| 2699 | if (!(node->v.w & jit_regno_patch)) { |
| 2700 | if (jit_regset_tstbit(mask, node->v.w)) { |
| 2701 | jit_regset_clrbit(mask, node->v.w); |
| 2702 | if (!(value & jit_cc_a1_chg)) |
| 2703 | jit_regset_setbit(live, node->v.w); |
| 2704 | } |
| 2705 | } |
| 2706 | } |
| 2707 | if (value & jit_cc_a0_reg) { |
| 2708 | if (value & jit_cc_a0_rlh) { |
| 2709 | if (!(node->u.q.l & jit_regno_patch)) { |
| 2710 | if (jit_regset_tstbit(mask, node->u.q.l)) { |
| 2711 | jit_regset_clrbit(mask, node->u.q.l); |
| 2712 | if (!(value & jit_cc_a0_chg)) |
| 2713 | jit_regset_setbit(live, node->u.q.l); |
| 2714 | } |
| 2715 | } |
| 2716 | if (!(node->u.q.h & jit_regno_patch)) { |
| 2717 | if (jit_regset_tstbit(mask, node->u.q.h)) { |
| 2718 | jit_regset_clrbit(mask, node->u.q.h); |
| 2719 | if (!(value & jit_cc_a0_chg)) |
| 2720 | jit_regset_setbit(live, node->u.q.h); |
| 2721 | } |
| 2722 | } |
| 2723 | } |
| 2724 | else { |
| 2725 | if (!(node->u.w & jit_regno_patch)) { |
| 2726 | if (jit_regset_tstbit(mask, node->u.w)) { |
| 2727 | jit_regset_clrbit(mask, node->u.w); |
| 2728 | if (!(value & jit_cc_a0_chg)) |
| 2729 | jit_regset_setbit(live, node->u.w); |
| 2730 | } |
| 2731 | } |
| 2732 | } |
| 2733 | } |
| 2734 | if (value & jit_cc_a0_jmp) { |
| 2735 | if (node->flag & jit_flag_node) { |
| 2736 | label = node->u.n; |
| 2737 | /* Do not consider jmpi and jmpr cannot jump to the |
| 2738 | * next instruction. */ |
| 2739 | block = _jitc->blocks.ptr + label->v.w; |
| 2740 | jit_regset_and(®temp, mask, &block->reglive); |
| 2741 | if (jit_regset_set_p(®temp)) { |
| 2742 | /* Add live state. */ |
| 2743 | jit_regset_ior(live, live, ®temp); |
| 2744 | /* Remove from unknown state bitmask. */ |
| 2745 | jit_regset_com(®temp, ®temp); |
| 2746 | jit_regset_and(mask, mask, ®temp); |
| 2747 | } |
| 2748 | } |
| 2749 | else { |
| 2750 | /* Jump to unknown location. |
| 2751 | * This is a pitfall of the implementation. |
| 2752 | * Only jmpi to not a jit code should reach here, |
| 2753 | * or a jmpr of a computed address. |
| 2754 | * Because the implementation needs jit_class_nospill |
| 2755 | * registers, must treat jmpr as a function call. This |
| 2756 | * means that only JIT_Vn registers can be trusted on |
| 2757 | * arrival of jmpr. |
| 2758 | */ |
| 2759 | jit_regset_set_ui(mask, 0); |
| 2760 | for (regno = 0; regno < _jitc->reglen; regno++) { |
| 2761 | spec = jit_class(_rvs[regno].spec); |
| 2762 | if ((spec & (jit_class_gpr|jit_class_fpr)) && |
| 2763 | (spec & jit_class_sav)) |
| 2764 | jit_regset_setbit(mask, regno); |
| 2765 | } |
| 2766 | /* Assume non callee save registers are live due |
| 2767 | * to jump to unknown location. */ |
| 2768 | /* Treat all callee save as live. */ |
| 2769 | jit_regset_ior(live, live, mask); |
| 2770 | /* Treat anything else as dead. */ |
| 2771 | return; |
| 2772 | } |
| 2773 | } |
| 2774 | break; |
| 2775 | } |
| 2776 | } |
| 2777 | } |
| 2778 | |
| 2779 | static void |
| 2780 | _thread_jumps(jit_state_t *_jit) |
| 2781 | { |
| 2782 | jit_node_t *prev; |
| 2783 | jit_node_t *node; |
| 2784 | jit_node_t *next; |
| 2785 | jit_int32_t mask; |
| 2786 | |
| 2787 | for (prev = node = _jitc->head; node;) { |
| 2788 | next = node->next; |
| 2789 | switch (node->code) { |
| 2790 | case jit_code_jmpi: |
| 2791 | if (redundant_jump(prev, node)) { |
| 2792 | node = prev; |
| 2793 | continue; |
| 2794 | } |
| 2795 | if (shortcut_jump(prev, node)) |
| 2796 | continue; |
| 2797 | break; |
| 2798 | case jit_code_jmpr: |
| 2799 | case jit_code_callr: case jit_code_calli: |
| 2800 | /* non optimizable jump like code */ |
| 2801 | break; |
| 2802 | default: |
| 2803 | mask = jit_classify(node->code); |
| 2804 | if (mask & jit_cc_a0_jmp) { |
| 2805 | if (reverse_jump(prev, node) || |
| 2806 | shortcut_jump(prev, node)) |
| 2807 | continue; |
| 2808 | } |
| 2809 | break; |
| 2810 | } |
| 2811 | prev = node; |
| 2812 | node = next; |
| 2813 | } |
| 2814 | } |
| 2815 | |
| 2816 | static void |
| 2817 | _sequential_labels(jit_state_t *_jit) |
| 2818 | { |
| 2819 | jit_node_t *jump; |
| 2820 | jit_node_t *link; |
| 2821 | jit_node_t *prev; |
| 2822 | jit_node_t *next; |
| 2823 | jit_node_t *node; |
| 2824 | |
| 2825 | for (prev = node = _jitc->head; node; node = next) { |
| 2826 | next = node->next; |
| 2827 | if (node->code == jit_code_label) { |
| 2828 | if (!node->flag) { |
| 2829 | if (!node->link) { |
| 2830 | del_label(prev, node); |
| 2831 | continue; |
| 2832 | } |
| 2833 | if (prev != node && prev->code == jit_code_label) { |
| 2834 | if ((jump = node->link)) { |
| 2835 | for (; jump; jump = link) { |
| 2836 | link = jump->link; |
| 2837 | jump->u.n = prev; |
| 2838 | jump->link = prev->link; |
| 2839 | prev->link = jump; |
| 2840 | } |
| 2841 | node->link = NULL; |
| 2842 | } |
| 2843 | del_label(prev, node); |
| 2844 | continue; |
| 2845 | } |
| 2846 | } |
| 2847 | if (next && next->code == jit_code_label && !next->flag) { |
| 2848 | if ((jump = next->link)) { |
| 2849 | for (; jump; jump = link) { |
| 2850 | link = jump->link; |
| 2851 | jump->u.n = node; |
| 2852 | jump->link = node->link; |
| 2853 | node->link = jump; |
| 2854 | } |
| 2855 | next->link = NULL; |
| 2856 | } |
| 2857 | del_label(node, next); |
| 2858 | next = node->next; |
| 2859 | continue; |
| 2860 | } |
| 2861 | } |
| 2862 | prev = node; |
| 2863 | } |
| 2864 | } |
| 2865 | |
| 2866 | static void |
| 2867 | _split_branches(jit_state_t *_jit) |
| 2868 | { |
| 2869 | jit_node_t *node; |
| 2870 | jit_node_t *next; |
| 2871 | jit_node_t *label; |
| 2872 | jit_block_t *block; |
| 2873 | |
| 2874 | for (node = _jitc->head; node; node = next) { |
| 2875 | if ((next = node->next)) { |
| 2876 | if (next->code == jit_code_label || |
| 2877 | next->code == jit_code_prolog || |
| 2878 | next->code == jit_code_epilog) |
| 2879 | continue; |
| 2880 | /* split block on branches */ |
| 2881 | if (jit_classify(node->code) & jit_cc_a0_jmp) { |
| 2882 | label = new_node(jit_code_label); |
| 2883 | label->next = next; |
| 2884 | node->next = label; |
| 2885 | if (_jitc->blocks.offset >= _jitc->blocks.length) { |
| 2886 | jit_word_t length; |
| 2887 | |
| 2888 | length = _jitc->blocks.length + 16; |
| 2889 | jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr, |
| 2890 | _jitc->blocks.length * sizeof(jit_block_t), |
| 2891 | length * sizeof(jit_block_t)); |
| 2892 | _jitc->blocks.length = length; |
| 2893 | } |
| 2894 | block = _jitc->blocks.ptr + _jitc->blocks.offset; |
| 2895 | block->label = label; |
| 2896 | label->v.w = _jitc->blocks.offset; |
| 2897 | jit_regset_new(&block->reglive); |
| 2898 | jit_regset_new(&block->regmask); |
| 2899 | ++_jitc->blocks.offset; |
| 2900 | } |
| 2901 | } |
| 2902 | } |
| 2903 | } |
| 2904 | |
| 2905 | static jit_bool_t |
| 2906 | _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 2907 | { |
| 2908 | jit_bool_t cond; |
| 2909 | jit_node_t *jump; |
| 2910 | jit_node_t *next; |
| 2911 | jit_node_t *temp; |
| 2912 | |
| 2913 | if (!(node->flag & jit_flag_node)) |
| 2914 | return (0); |
| 2915 | assert(node->code != jit_code_jmpr); |
| 2916 | cond = node->code != jit_code_jmpi; |
| 2917 | jump = node->u.n; |
| 2918 | for (next = jump->next; next; next = next->next) { |
| 2919 | switch (next->code) { |
| 2920 | case jit_code_jmpi: |
| 2921 | if (!(next->flag & jit_flag_node)) |
| 2922 | return (0); |
| 2923 | if (jump->link == node) |
| 2924 | jump->link = node->link; |
| 2925 | else { |
| 2926 | for (temp = jump->link; |
| 2927 | temp->link != node; |
| 2928 | temp = temp->link) |
| 2929 | assert(temp != NULL); |
| 2930 | temp->link = node->link; |
| 2931 | } |
| 2932 | jump = next->u.n; |
| 2933 | node->u.n = jump; |
| 2934 | node->link = jump->link; |
| 2935 | jump->link = node; |
| 2936 | return (1); |
| 2937 | case jit_code_jmpr: |
| 2938 | if (cond) |
| 2939 | return (0); |
| 2940 | node->code = jit_code_jmpr; |
| 2941 | node->u.w = next->u.w; |
| 2942 | node->link = NULL; |
| 2943 | node->flag &= ~jit_flag_node; |
| 2944 | return (1); |
| 2945 | case jit_code_note: case jit_code_label: |
| 2946 | break; |
| 2947 | default: |
| 2948 | return (0); |
| 2949 | } |
| 2950 | } |
| 2951 | return (0); |
| 2952 | } |
| 2953 | |
| 2954 | static jit_bool_t |
| 2955 | _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 2956 | { |
| 2957 | jit_node_t *local_prev; |
| 2958 | jit_node_t *local_next; |
| 2959 | |
| 2960 | if (!(node->flag & jit_flag_node)) |
| 2961 | return (0); |
| 2962 | for (local_prev = node, local_next = node->next; |
| 2963 | local_next; |
| 2964 | local_prev = local_next, local_next = local_next->next) { |
| 2965 | |
| 2966 | switch (local_next->code) { |
| 2967 | case jit_code_label: case jit_code_epilog: |
| 2968 | if (node->u.n == local_next) { |
| 2969 | if (local_next->link == node) |
| 2970 | local_next->link = node->link; |
| 2971 | else { |
| 2972 | for (local_prev = local_next->link; |
| 2973 | local_prev->link != node; |
| 2974 | local_prev = local_prev->link) |
| 2975 | assert(local_prev != NULL); |
| 2976 | local_prev->link = node->link; |
| 2977 | } |
| 2978 | del_node(prev, node); |
| 2979 | return (1); |
| 2980 | } |
| 2981 | break; |
| 2982 | case jit_code_name: case jit_code_note: |
| 2983 | case jit_code_align: |
| 2984 | break; |
| 2985 | default: |
| 2986 | return (0); |
| 2987 | } |
| 2988 | } |
| 2989 | return (0); |
| 2990 | } |
| 2991 | |
| 2992 | static jit_code_t |
| 2993 | reverse_jump_code(jit_code_t code) |
| 2994 | { |
| 2995 | switch (code) { |
| 2996 | case jit_code_bltr: return (jit_code_bger); |
| 2997 | case jit_code_blti: return (jit_code_bgei); |
| 2998 | case jit_code_bltr_u: return (jit_code_bger_u); |
| 2999 | case jit_code_blti_u: return (jit_code_bgei_u); |
| 3000 | case jit_code_bler: return (jit_code_bgtr); |
| 3001 | case jit_code_blei: return (jit_code_bgti); |
| 3002 | case jit_code_bler_u: return (jit_code_bgtr_u); |
| 3003 | case jit_code_blei_u: return (jit_code_bgti_u); |
| 3004 | case jit_code_beqr: return (jit_code_bner); |
| 3005 | case jit_code_beqi: return (jit_code_bnei); |
| 3006 | case jit_code_bger: return (jit_code_bltr); |
| 3007 | case jit_code_bgei: return (jit_code_blti); |
| 3008 | case jit_code_bger_u: return (jit_code_bltr_u); |
| 3009 | case jit_code_bgei_u: return (jit_code_blti_u); |
| 3010 | case jit_code_bgtr: return (jit_code_bler); |
| 3011 | case jit_code_bgti: return (jit_code_blei); |
| 3012 | case jit_code_bgtr_u: return (jit_code_bler_u); |
| 3013 | case jit_code_bgti_u: return (jit_code_blei_u); |
| 3014 | case jit_code_bner: return (jit_code_beqr); |
| 3015 | case jit_code_bnei: return (jit_code_beqi); |
| 3016 | case jit_code_bmsr: return (jit_code_bmcr); |
| 3017 | case jit_code_bmsi: return (jit_code_bmci); |
| 3018 | case jit_code_bmcr: return (jit_code_bmsr); |
| 3019 | case jit_code_bmci: return (jit_code_bmsi); |
| 3020 | case jit_code_bltr_f: return (jit_code_bunger_f); |
| 3021 | case jit_code_blti_f: return (jit_code_bungei_f); |
| 3022 | case jit_code_bler_f: return (jit_code_bungtr_f); |
| 3023 | case jit_code_blei_f: return (jit_code_bungti_f); |
| 3024 | |
| 3025 | case jit_code_beqr_f: return (jit_code_bner_f); |
| 3026 | case jit_code_beqi_f: return (jit_code_bnei_f); |
| 3027 | |
| 3028 | case jit_code_bger_f: return (jit_code_bunltr_f); |
| 3029 | case jit_code_bgei_f: return (jit_code_bunlti_f); |
| 3030 | case jit_code_bgtr_f: return (jit_code_bunler_f); |
| 3031 | case jit_code_bgti_f: return (jit_code_bunlei_f); |
| 3032 | |
| 3033 | case jit_code_bner_f: return (jit_code_beqr_f); |
| 3034 | case jit_code_bnei_f: return (jit_code_beqr_f); |
| 3035 | |
| 3036 | case jit_code_bunltr_f: return (jit_code_bger_f); |
| 3037 | case jit_code_bunlti_f: return (jit_code_bgei_f); |
| 3038 | case jit_code_bunler_f: return (jit_code_bgtr_f); |
| 3039 | case jit_code_bunlei_f: return (jit_code_bgti_f); |
| 3040 | |
| 3041 | case jit_code_buneqr_f: return (jit_code_bltgtr_f); |
| 3042 | case jit_code_buneqi_f: return (jit_code_bltgti_f); |
| 3043 | |
| 3044 | case jit_code_bunger_f: return (jit_code_bltr_f); |
| 3045 | case jit_code_bungei_f: return (jit_code_blti_f); |
| 3046 | case jit_code_bungtr_f: return (jit_code_bler_f); |
| 3047 | case jit_code_bungti_f: return (jit_code_blei_f); |
| 3048 | |
| 3049 | case jit_code_bltgtr_f: return (jit_code_buneqr_f); |
| 3050 | case jit_code_bltgti_f: return (jit_code_buneqi_f); |
| 3051 | |
| 3052 | case jit_code_bordr_f: return (jit_code_bunordr_f); |
| 3053 | case jit_code_bordi_f: return (jit_code_bunordi_f); |
| 3054 | case jit_code_bunordr_f:return (jit_code_bordr_f); |
| 3055 | case jit_code_bunordi_f:return (jit_code_bordi_f); |
| 3056 | case jit_code_bltr_d: return (jit_code_bunger_d); |
| 3057 | case jit_code_blti_d: return (jit_code_bungei_d); |
| 3058 | case jit_code_bler_d: return (jit_code_bungtr_d); |
| 3059 | case jit_code_blei_d: return (jit_code_bungti_d); |
| 3060 | |
| 3061 | case jit_code_beqr_d: return (jit_code_bner_d); |
| 3062 | case jit_code_beqi_d: return (jit_code_bnei_d); |
| 3063 | |
| 3064 | case jit_code_bger_d: return (jit_code_bunltr_d); |
| 3065 | case jit_code_bgei_d: return (jit_code_bunlti_d); |
| 3066 | case jit_code_bgtr_d: return (jit_code_bunler_d); |
| 3067 | case jit_code_bgti_d: return (jit_code_bunlei_d); |
| 3068 | |
| 3069 | case jit_code_bner_d: return (jit_code_beqr_d); |
| 3070 | case jit_code_bnei_d: return (jit_code_beqi_d); |
| 3071 | |
| 3072 | case jit_code_bunltr_d: return (jit_code_bger_d); |
| 3073 | case jit_code_bunlti_d: return (jit_code_bgei_d); |
| 3074 | case jit_code_bunler_d: return (jit_code_bgtr_d); |
| 3075 | case jit_code_bunlei_d: return (jit_code_bgti_d); |
| 3076 | |
| 3077 | case jit_code_buneqr_d: return (jit_code_bltgtr_d); |
| 3078 | case jit_code_buneqi_d: return (jit_code_bltgti_d); |
| 3079 | |
| 3080 | case jit_code_bunger_d: return (jit_code_bltr_d); |
| 3081 | case jit_code_bungei_d: return (jit_code_blti_d); |
| 3082 | case jit_code_bungtr_d: return (jit_code_bler_d); |
| 3083 | case jit_code_bungti_d: return (jit_code_blei_d); |
| 3084 | |
| 3085 | case jit_code_bltgtr_d: return (jit_code_buneqr_d); |
| 3086 | case jit_code_bltgti_d: return (jit_code_buneqi_d); |
| 3087 | |
| 3088 | case jit_code_bordr_d: return (jit_code_bunordr_d); |
| 3089 | case jit_code_bordi_d: return (jit_code_bunordi_d); |
| 3090 | case jit_code_bunordr_d:return (jit_code_bordr_d); |
| 3091 | case jit_code_bunordi_d:return (jit_code_bordi_d); |
| 3092 | case jit_code_boaddr: return (jit_code_bxaddr); |
| 3093 | case jit_code_boaddi: return (jit_code_bxaddi); |
| 3094 | case jit_code_boaddr_u: return (jit_code_bxaddr_u); |
| 3095 | case jit_code_boaddi_u: return (jit_code_bxaddi_u); |
| 3096 | case jit_code_bxaddr: return (jit_code_boaddr); |
| 3097 | case jit_code_bxaddi: return (jit_code_boaddi); |
| 3098 | case jit_code_bxaddr_u: return (jit_code_boaddr_u); |
| 3099 | case jit_code_bxaddi_u: return (jit_code_boaddi_u); |
| 3100 | case jit_code_bosubr: return (jit_code_bxsubr); |
| 3101 | case jit_code_bosubi: return (jit_code_bxsubi); |
| 3102 | case jit_code_bosubr_u: return (jit_code_bxsubr_u); |
| 3103 | case jit_code_bosubi_u: return (jit_code_bxsubi_u); |
| 3104 | case jit_code_bxsubr: return (jit_code_bosubr); |
| 3105 | case jit_code_bxsubi: return (jit_code_bosubi); |
| 3106 | case jit_code_bxsubr_u: return (jit_code_bosubr_u); |
| 3107 | case jit_code_bxsubi_u: return (jit_code_bosubi_u); |
| 3108 | default: abort(); /* invalid jump code */ |
| 3109 | } |
| 3110 | } |
| 3111 | |
| 3112 | /* |
| 3113 | * change common pattern: |
| 3114 | * <cond_jump L0> <jump L1> <label L0> |
| 3115 | * into |
| 3116 | * <reverse_cond_jump L1> |
| 3117 | */ |
| 3118 | static jit_bool_t |
| 3119 | _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 3120 | { |
| 3121 | jit_node_t *local_prev; |
| 3122 | jit_node_t *local_next; |
| 3123 | jit_node_t *local_jump; |
| 3124 | |
| 3125 | if (!(node->flag & jit_flag_node)) |
| 3126 | return (0); |
| 3127 | /* =><cond_jump L0> <jump L1> <label L0> */ |
| 3128 | local_next = node->next; |
| 3129 | if (local_next->code != jit_code_jmpi || |
| 3130 | !(local_next->flag & jit_flag_node)) |
| 3131 | return (0); |
| 3132 | /* <cond_jump L0> =><jump L1> <label L0> */ |
| 3133 | |
| 3134 | local_jump = local_next->u.n; |
| 3135 | for (local_prev = local_next, local_next = local_next->next; |
| 3136 | local_next; |
| 3137 | local_prev = local_next, local_next = local_next->next) { |
| 3138 | switch (local_next->code) { |
| 3139 | case jit_code_label: case jit_code_epilog: |
| 3140 | if (node->u.n == local_next) { |
| 3141 | if (local_next->link == node) |
| 3142 | local_next->link = node->link; |
| 3143 | else { |
| 3144 | for (local_prev = local_next->link; |
| 3145 | local_prev->link != node; |
| 3146 | local_prev = local_prev->link) |
| 3147 | assert(local_prev != NULL); |
| 3148 | local_prev->link = node->link; |
| 3149 | } |
| 3150 | del_node(node, node->next); |
| 3151 | node->code = reverse_jump_code(node->code); |
| 3152 | node->u.n = local_jump; |
| 3153 | node->link = local_jump->link; |
| 3154 | local_jump->link = node; |
| 3155 | return (1); |
| 3156 | } |
| 3157 | break; |
| 3158 | case jit_code_note: |
| 3159 | break; |
| 3160 | default: |
| 3161 | return (0); |
| 3162 | } |
| 3163 | } |
| 3164 | return (0); |
| 3165 | } |
| 3166 | |
| 3167 | static jit_bool_t |
| 3168 | _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump) |
| 3169 | { |
| 3170 | jit_node_t *iter; |
| 3171 | jit_node_t *prev; |
| 3172 | jit_word_t word; |
| 3173 | jit_int32_t spec; |
| 3174 | jit_int32_t regno; |
| 3175 | jit_bool_t result; |
| 3176 | |
| 3177 | if (jump) { |
| 3178 | prev = node->u.n; |
| 3179 | if (prev->code == jit_code_epilog) |
| 3180 | return (0); |
| 3181 | assert(prev->code == jit_code_label); |
| 3182 | if ((prev->flag & jit_flag_head) || node->link || prev->link != node) |
| 3183 | /* multiple sources */ |
| 3184 | return (0); |
| 3185 | /* if there are sequential labels it will return below */ |
| 3186 | } |
| 3187 | else |
| 3188 | prev = node; |
| 3189 | result = 0; |
| 3190 | word = node->w.w; |
| 3191 | regno = jit_regno(node->v.w); |
| 3192 | for (iter = prev->next; iter; prev = iter, iter = iter->next) { |
| 3193 | switch (iter->code) { |
| 3194 | case jit_code_label: case jit_code_prolog: |
| 3195 | case jit_code_epilog: |
| 3196 | return (result); |
| 3197 | case jit_code_movi: |
| 3198 | if (regno == jit_regno(iter->u.w)) { |
| 3199 | if (iter->flag || iter->v.w != word) |
| 3200 | return (result); |
| 3201 | result = 1; |
| 3202 | del_node(prev, iter); |
| 3203 | iter = prev; |
| 3204 | } |
| 3205 | break; |
| 3206 | default: |
| 3207 | spec = jit_classify(iter->code); |
| 3208 | if (spec & jit_cc_a0_jmp) |
| 3209 | return (result); |
| 3210 | if ((spec & (jit_cc_a0_reg|jit_cc_a0_chg)) == |
| 3211 | (jit_cc_a0_reg|jit_cc_a0_chg)) { |
| 3212 | if (spec & jit_cc_a0_rlh) { |
| 3213 | if (regno == jit_regno(iter->u.q.l) || |
| 3214 | regno == jit_regno(iter->u.q.h)) |
| 3215 | return (result); |
| 3216 | } |
| 3217 | else { |
| 3218 | if (regno == jit_regno(iter->u.w)) |
| 3219 | return (result); |
| 3220 | } |
| 3221 | } |
| 3222 | if ((spec & (jit_cc_a1_reg|jit_cc_a1_chg)) == |
| 3223 | (jit_cc_a1_reg|jit_cc_a1_chg)) { |
| 3224 | if (regno == jit_regno(iter->v.w)) |
| 3225 | return (result); |
| 3226 | } |
| 3227 | if ((spec & (jit_cc_a2_reg|jit_cc_a2_chg)) == |
| 3228 | (jit_cc_a2_reg|jit_cc_a2_chg)) { |
| 3229 | if (regno == jit_regno(iter->w.w)) |
| 3230 | return (result); |
| 3231 | } |
| 3232 | break; |
| 3233 | } |
| 3234 | } |
| 3235 | |
| 3236 | return (result); |
| 3237 | } |
| 3238 | |
| 3239 | static jit_bool_t |
| 3240 | _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node, |
| 3241 | jit_int32_t kind, jit_int32_t size) |
| 3242 | { |
| 3243 | jit_int32_t regno; |
| 3244 | jit_int32_t right; |
| 3245 | jit_value_t *value; |
| 3246 | |
| 3247 | regno = jit_regno(node->u.w); |
| 3248 | right = jit_regno(node->v.w); |
| 3249 | value = _jitc->values + regno; |
| 3250 | if ((value->kind == jit_kind_register && |
| 3251 | jit_regno(value->base.q.l) == right && |
| 3252 | value->base.q.h == _jitc->gen[right]) || |
| 3253 | (value->kind == kind && _jitc->values[right].kind == kind && |
| 3254 | memcmp(&value->base.w, &_jitc->values[right].base.w, size) == 0)) { |
| 3255 | del_node(prev, node); |
| 3256 | return (1); |
| 3257 | } |
| 3258 | if (_jitc->values[right].kind == jit_kind_word) |
| 3259 | jit_memcpy(value, _jitc->values + right, sizeof(jit_value_t)); |
| 3260 | else { |
| 3261 | value->kind = jit_kind_register; |
| 3262 | value->base.q.l = right; |
| 3263 | value->base.q.h = _jitc->gen[right]; |
| 3264 | } |
| 3265 | ++_jitc->gen[regno]; |
| 3266 | |
| 3267 | return (0); |
| 3268 | } |
| 3269 | |
| 3270 | static jit_bool_t |
| 3271 | _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node, |
| 3272 | jit_int32_t kind, jit_int32_t size) |
| 3273 | { |
| 3274 | jit_value_t *value; |
| 3275 | jit_int32_t spec; |
| 3276 | jit_int32_t regno; |
| 3277 | jit_int32_t offset; |
| 3278 | |
| 3279 | regno = jit_regno(node->u.w); |
| 3280 | value = _jitc->values + regno; |
| 3281 | if (node->flag & jit_flag_node) { |
| 3282 | /* set to undefined if value will be patched */ |
| 3283 | value->kind = 0; |
| 3284 | ++_jitc->gen[regno]; |
| 3285 | return (0); |
| 3286 | } |
| 3287 | if (value->kind == kind) { |
| 3288 | if (memcmp(&node->v.w, &value->base.w, size) == 0) { |
| 3289 | del_node(prev, node); |
| 3290 | return (1); |
| 3291 | } |
| 3292 | spec = jit_class(_rvs[regno].spec); |
| 3293 | if (kind == jit_kind_word) |
| 3294 | spec &= jit_class_gpr; |
| 3295 | else |
| 3296 | spec &= (jit_class_xpr | jit_class_fpr); |
| 3297 | for (offset = 0; offset < _jitc->reglen; offset++) { |
| 3298 | if (_jitc->values[offset].kind == kind && |
| 3299 | memcmp(&node->v.w, &_jitc->values[offset].base.w, size) == 0 && |
| 3300 | (jit_class(_rvs[offset].spec) & spec) == spec) { |
| 3301 | if (kind == jit_kind_word) |
| 3302 | node->code = jit_code_movr; |
| 3303 | else if (kind == jit_kind_float32) |
| 3304 | node->code = jit_code_movr_f; |
| 3305 | else |
| 3306 | node->code = jit_code_movr_d; |
| 3307 | node->v.w = offset; |
| 3308 | jit_memcpy(value, _jitc->values + offset, sizeof(jit_value_t)); |
| 3309 | ++_jitc->gen[regno]; |
| 3310 | return (0); |
| 3311 | } |
| 3312 | } |
| 3313 | } |
| 3314 | value->kind = kind; |
| 3315 | jit_memcpy(&value->base.w, &node->v.w, size); |
| 3316 | ++_jitc->gen[regno]; |
| 3317 | |
| 3318 | return (0); |
| 3319 | } |
| 3320 | |
| 3321 | /* simple/safe redundandy test not checking if another register |
| 3322 | * holds the same value |
| 3323 | */ |
| 3324 | static jit_bool_t |
| 3325 | _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 3326 | { |
| 3327 | jit_value_t *value; |
| 3328 | jit_int32_t regno; |
| 3329 | jit_int32_t right; |
| 3330 | |
| 3331 | regno = jit_regno(node->u.w); |
| 3332 | right = jit_regno(node->v.w); |
| 3333 | value = _jitc->values + regno; |
| 3334 | if (regno != right && |
| 3335 | value->kind == jit_kind_code && value->code == node->code && |
| 3336 | value->base.q.l == right && value->base.q.h == _jitc->gen[right] && |
| 3337 | node->w.w == value->disp.w) { |
| 3338 | del_node(prev, node); |
| 3339 | return (1); |
| 3340 | } |
| 3341 | value->kind = jit_kind_code; |
| 3342 | value->code = node->code; |
| 3343 | value->base.q.l = right; |
| 3344 | value->base.q.h = _jitc->gen[right]; |
| 3345 | value->disp.w = node->w.w; |
| 3346 | ++_jitc->gen[regno]; |
| 3347 | |
| 3348 | return (0); |
| 3349 | } |
| 3350 | |
| 3351 | static jit_bool_t |
| 3352 | _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node) |
| 3353 | { |
| 3354 | jit_value_t *value; |
| 3355 | jit_int32_t regno; |
| 3356 | jit_int32_t right; |
| 3357 | jit_int32_t offset; |
| 3358 | |
| 3359 | regno = jit_regno(node->w.w); |
| 3360 | right = jit_regno(node->v.w); |
| 3361 | value = _jitc->values + regno; |
| 3362 | |
| 3363 | /* check for redundant store after load */ |
| 3364 | if (regno != right && |
| 3365 | value->kind == jit_kind_code && value->code == node->code && |
| 3366 | value->base.q.l == right && value->base.q.h == _jitc->gen[right] && |
| 3367 | node->u.w == value->disp.w) { |
| 3368 | del_node(prev, node); |
| 3369 | return (1); |
| 3370 | } |
| 3371 | |
| 3372 | /* assume anything can alias, and invalidate tracked values */ |
| 3373 | for (offset = 0; offset < _jitc->reglen; offset++) { |
| 3374 | if (_jitc->values[offset].kind == jit_kind_code) { |
| 3375 | _jitc->values[offset].kind = 0; |
| 3376 | ++_jitc->gen[offset]; |
| 3377 | } |
| 3378 | } |
| 3379 | |
| 3380 | /* no multiple information, so, if set to a constant, |
| 3381 | * prefer to keep that information */ |
| 3382 | if (value->kind == 0) { |
| 3383 | value->kind = jit_kind_code; |
| 3384 | switch (node->code) { |
| 3385 | /* no information about signed/unsigned either */ |
| 3386 | case jit_code_stxi_c: value->code = jit_code_ldxi_c; break; |
| 3387 | case jit_code_stxi_s: value->code = jit_code_ldxi_s; break; |
| 3388 | case jit_code_stxi_i: value->code = jit_code_ldxi_i; break; |
| 3389 | case jit_code_stxi_l: value->code = jit_code_ldxi_l; break; |
| 3390 | case jit_code_stxi_f: value->code = jit_code_ldxi_f; break; |
| 3391 | case jit_code_stxi_d: value->code = jit_code_ldxi_d; break; |
| 3392 | default: abort(); |
| 3393 | } |
| 3394 | value->kind = jit_kind_code; |
| 3395 | value->base.q.l = right; |
| 3396 | value->base.q.h = _jitc->gen[right]; |
| 3397 | value->disp.w = node->u.w; |
| 3398 | } |
| 3399 | |
| 3400 | return (0); |
| 3401 | } |
| 3402 | |
| 3403 | /* usually there should be only one store in the |
| 3404 | * jit_get_reg/jit_unget_reg, but properly handle |
| 3405 | * multiple ones by moving the save node */ |
| 3406 | static void |
| 3407 | _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno) |
| 3408 | { |
| 3409 | jit_node_t *save; |
| 3410 | jit_node_t *temp; |
| 3411 | |
| 3412 | if ((temp = _jitc->spill[regno]) && (save = temp->next) != node) { |
| 3413 | temp->next = save->next; |
| 3414 | save->next = node->next; |
| 3415 | node->next = save; |
| 3416 | _jitc->spill[regno] = node; |
| 3417 | } |
| 3418 | } |
| 3419 | |
| 3420 | /* checks for simple cases where a register is set more than |
| 3421 | * once to the same value, and is a common pattern of calls |
| 3422 | * to jit_pushargi and jit_pushargr |
| 3423 | */ |
| 3424 | static jit_bool_t |
| 3425 | _simplify(jit_state_t *_jit) |
| 3426 | { |
| 3427 | jit_node_t *prev; |
| 3428 | jit_node_t *node; |
| 3429 | jit_node_t *next; |
| 3430 | jit_int32_t info; |
| 3431 | jit_int32_t regno; |
| 3432 | jit_bool_t result; |
| 3433 | |
| 3434 | result = 0; |
| 3435 | for (prev = NULL, node = _jitc->head; node; prev = node, node = next) { |
| 3436 | next = node->next; |
| 3437 | switch (node->code) { |
| 3438 | case jit_code_label: case jit_code_prolog: |
| 3439 | case jit_code_callr: case jit_code_calli: |
| 3440 | reset: |
| 3441 | memset(_jitc->gen, 0, sizeof(jit_int32_t) * _jitc->reglen); |
| 3442 | memset(_jitc->values, 0, sizeof(jit_value_t) * _jitc->reglen); |
| 3443 | break; |
| 3444 | case jit_code_save: |
| 3445 | _jitc->spill[jit_regno(node->u.w)] = prev; |
| 3446 | break; |
| 3447 | case jit_code_load: |
| 3448 | regno = jit_regno(node->u.w); |
| 3449 | if (register_change_p(node->link->next, node, regno) != |
| 3450 | jit_reg_change) { |
| 3451 | /* spill not required due to optimizing common |
| 3452 | * redundancy case of calling jit_get_reg/jit_unget_reg |
| 3453 | * and then setting the register to the value it is |
| 3454 | * already holding */ |
| 3455 | patch_register(node->link->next, node, |
| 3456 | jit_regno_patch|regno, regno); |
| 3457 | result = 1; |
| 3458 | del_node(_jitc->spill[regno], node->link); |
| 3459 | del_node(prev, node); |
| 3460 | node = prev; |
| 3461 | } |
| 3462 | _jitc->spill[regno] = NULL; |
| 3463 | break; |
| 3464 | case jit_code_movr: |
| 3465 | regno = jit_regno(node->u.w); |
| 3466 | if (simplify_movr(prev, node, |
| 3467 | jit_kind_word, sizeof(jit_word_t))) { |
| 3468 | result = 1; |
| 3469 | simplify_spill(node = prev, regno); |
| 3470 | } |
| 3471 | break; |
| 3472 | case jit_code_movi: |
| 3473 | regno = jit_regno(node->u.w); |
| 3474 | if (simplify_movi(prev, node, |
| 3475 | jit_kind_word, sizeof(jit_word_t))) { |
| 3476 | result = 1; |
| 3477 | simplify_spill(node = prev, regno); |
| 3478 | } |
| 3479 | break; |
| 3480 | case jit_code_movr_f: |
| 3481 | regno = jit_regno(node->u.w); |
| 3482 | if (simplify_movr(prev, node, |
| 3483 | jit_kind_float32, sizeof(jit_float32_t))) { |
| 3484 | result = 1; |
| 3485 | simplify_spill(node = prev, regno); |
| 3486 | } |
| 3487 | break; |
| 3488 | case jit_code_movi_f: |
| 3489 | regno = jit_regno(node->u.w); |
| 3490 | if (simplify_movi(prev, node, |
| 3491 | jit_kind_float32, sizeof(jit_float32_t))) { |
| 3492 | result = 1; |
| 3493 | simplify_spill(node = prev, regno); |
| 3494 | } |
| 3495 | break; |
| 3496 | case jit_code_movr_d: |
| 3497 | regno = jit_regno(node->u.w); |
| 3498 | if (simplify_movr(prev, node, |
| 3499 | jit_kind_float64, sizeof(jit_float64_t))) { |
| 3500 | result = 1; |
| 3501 | simplify_spill(node = prev, regno); |
| 3502 | } |
| 3503 | break; |
| 3504 | case jit_code_movi_d: |
| 3505 | regno = jit_regno(node->u.w); |
| 3506 | if (simplify_movi(prev, node, |
| 3507 | jit_kind_float64, sizeof(jit_float64_t))) { |
| 3508 | result = 1; |
| 3509 | simplify_spill(node = prev, regno); |
| 3510 | } |
| 3511 | break; |
| 3512 | case jit_code_ldxi_c: case jit_code_ldxi_uc: |
| 3513 | case jit_code_ldxi_s: case jit_code_ldxi_us: |
| 3514 | case jit_code_ldxi_i: case jit_code_ldxi_ui: |
| 3515 | case jit_code_ldxi_l: |
| 3516 | case jit_code_ldxi_f: case jit_code_ldxi_d: |
| 3517 | regno = jit_regno(node->u.w); |
| 3518 | if (simplify_ldxi(prev, node)) { |
| 3519 | result = 1; |
| 3520 | simplify_spill(node = prev, regno); |
| 3521 | } |
| 3522 | break; |
| 3523 | case jit_code_stxi_c: case jit_code_stxi_s: |
| 3524 | case jit_code_stxi_i: case jit_code_stxi_l: |
| 3525 | case jit_code_stxi_f: case jit_code_stxi_d: |
| 3526 | regno = jit_regno(node->u.w); |
| 3527 | if (simplify_stxi(prev, node)) { |
| 3528 | result = 1; |
| 3529 | simplify_spill(node = prev, regno); |
| 3530 | } |
| 3531 | break; |
| 3532 | default: |
| 3533 | info = jit_classify(node->code); |
| 3534 | if (info & jit_cc_a0_jmp) |
| 3535 | /* labels are not implicitly added when not taking |
| 3536 | * a conditional branch */ |
| 3537 | goto reset; |
| 3538 | if (info & jit_cc_a0_chg) { |
| 3539 | if (info & jit_cc_a0_rlh) { |
| 3540 | regno = jit_regno(node->u.q.l); |
| 3541 | _jitc->values[regno].kind = 0; |
| 3542 | ++_jitc->gen[regno]; |
| 3543 | regno = jit_regno(node->u.q.h); |
| 3544 | _jitc->values[regno].kind = 0; |
| 3545 | ++_jitc->gen[regno]; |
| 3546 | } |
| 3547 | else { |
| 3548 | regno = jit_regno(node->u.w); |
| 3549 | _jitc->values[regno].kind = 0; |
| 3550 | ++_jitc->gen[regno]; |
| 3551 | } |
| 3552 | } |
| 3553 | if (info & jit_cc_a1_chg) { |
| 3554 | regno = jit_regno(node->v.w); |
| 3555 | _jitc->values[regno].kind = 0; |
| 3556 | ++_jitc->gen[regno]; |
| 3557 | } |
| 3558 | if (info & jit_cc_a2_chg) { |
| 3559 | #if 0 |
| 3560 | /* Assume registers are not changed */ |
| 3561 | if (info & jit_cc_a2_rlh) { |
| 3562 | regno = jit_regno(node->w.q.l); |
| 3563 | _jitc->values[regno].kind = 0; |
| 3564 | ++_jitc->gen[regno]; |
| 3565 | regno = jit_regno(node->w.q.h); |
| 3566 | _jitc->values[regno].kind = 0; |
| 3567 | ++_jitc->gen[regno]; |
| 3568 | } |
| 3569 | else { |
| 3570 | #endif |
| 3571 | regno = jit_regno(node->w.w); |
| 3572 | _jitc->values[regno].kind = 0; |
| 3573 | ++_jitc->gen[regno]; |
| 3574 | #if 0 |
| 3575 | } |
| 3576 | #endif |
| 3577 | } |
| 3578 | break; |
| 3579 | } |
| 3580 | } |
| 3581 | return (result); |
| 3582 | } |
| 3583 | |
| 3584 | static jit_int32_t |
| 3585 | _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link, |
| 3586 | jit_int32_t regno) |
| 3587 | { |
| 3588 | jit_int32_t value; |
| 3589 | |
| 3590 | for (; node != link; node = node->next) { |
| 3591 | switch (node->code) { |
| 3592 | case jit_code_label: case jit_code_prolog: |
| 3593 | /* lack of extra information so cannot say it is undefined */ |
| 3594 | return (jit_reg_change); |
| 3595 | case jit_code_callr: case jit_code_calli: |
| 3596 | if (!(jit_class(_rvs[regno].spec) & jit_class_sav)) |
| 3597 | return (jit_reg_undef); |
| 3598 | break; |
| 3599 | default: |
| 3600 | value = jit_classify(node->code); |
| 3601 | /* lack of extra information */ |
| 3602 | if (value & (jit_cc_a0_jmp|jit_cc_a0_cnd)) |
| 3603 | return (jit_reg_change); |
| 3604 | else if ((value & (jit_cc_a0_reg|jit_cc_a0_chg)) == |
| 3605 | (jit_cc_a0_reg|jit_cc_a0_chg) && |
| 3606 | (((value & jit_cc_a0_rlh) && |
| 3607 | (node->u.q.l == regno || node->u.q.h == regno)) || |
| 3608 | (!(value & jit_cc_a0_rlh) && |
| 3609 | node->u.w == regno))) |
| 3610 | return (jit_reg_change); |
| 3611 | else if ((value & jit_cc_a1_reg) && node->v.w == regno && |
| 3612 | (value & jit_cc_a1_chg)) |
| 3613 | return (jit_reg_change); |
| 3614 | else if ((value & jit_cc_a2_reg) && node->w.w == regno && |
| 3615 | (value & jit_cc_a2_chg)) |
| 3616 | return (jit_reg_change); |
| 3617 | } |
| 3618 | } |
| 3619 | |
| 3620 | return (jit_reg_static); |
| 3621 | } |
| 3622 | |
| 3623 | /* most of this could be done at the same time as generating jit, but |
| 3624 | * avoid complications on different cpu backends and patch spill/loads |
| 3625 | * here, by simulating jit generation */ |
| 3626 | static jit_bool_t |
| 3627 | _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno) |
| 3628 | { |
| 3629 | if (!jit_regset_tstbit(&_jitc->reglive, regno)) { |
| 3630 | jit_regset_setbit(&_jitc->regmask, regno); |
| 3631 | jit_update(node->next, &_jitc->reglive, &_jitc->regmask); |
| 3632 | if (!jit_regset_tstbit(&_jitc->reglive, regno) && |
| 3633 | register_change_p(node->next, node->link, regno) != jit_reg_change) |
| 3634 | return (0); |
| 3635 | } |
| 3636 | |
| 3637 | return (1); |
| 3638 | } |
| 3639 | |
| 3640 | static void |
| 3641 | _patch_registers(jit_state_t *_jit) |
| 3642 | { |
| 3643 | jit_node_t *prev; |
| 3644 | jit_node_t *node; |
| 3645 | jit_node_t *next; |
| 3646 | jit_int32_t info; |
| 3647 | jit_int32_t spec; |
| 3648 | jit_int32_t regno; |
| 3649 | jit_int32_t value; |
| 3650 | |
| 3651 | _jitc->function = NULL; |
| 3652 | |
| 3653 | jit_reglive_setup(); |
| 3654 | for (prev = NULL, node = _jitc->head; node; node = next) { |
| 3655 | next = node->next; |
| 3656 | |
| 3657 | info = jit_classify(node->code); |
| 3658 | jit_regarg_set(node, info); |
| 3659 | |
| 3660 | switch (node->code) { |
| 3661 | case jit_code_save: |
| 3662 | regno = jit_regno(node->u.w); |
| 3663 | if (!spill_reglive_p(node, regno)) { |
| 3664 | /* register is not live, just remove spill/reload */ |
| 3665 | jit_regarg_clr(node, info); |
| 3666 | node->link->v.w = jit_regload_delete; |
| 3667 | del_node(prev, node); |
| 3668 | continue; |
| 3669 | } |
| 3670 | else { |
| 3671 | /* try to find a free register of the same class */ |
| 3672 | spec = jit_class(_rvs[regno].spec) & ~jit_class_arg; |
| 3673 | for (value = 0; value < _jitc->reglen; value++) { |
| 3674 | if (value != regno && |
| 3675 | ((jit_class(_rvs[value].spec) & spec) & |
| 3676 | ~jit_class_arg) == spec && |
| 3677 | !jit_regset_tstbit(&_jitc->regarg, value) && |
| 3678 | !spill_reglive_p(node, value)) |
| 3679 | break; |
| 3680 | } |
| 3681 | if (value < _jitc->reglen) { |
| 3682 | jit_regarg_clr(node, info); |
| 3683 | patch_register(node->next, node->link, |
| 3684 | jit_regno_patch|node->u.w, |
| 3685 | jit_regno_patch|value); |
| 3686 | /* mark as live just in case there are nested |
| 3687 | * register patches, so that next patch will |
| 3688 | * not want to use the same register */ |
| 3689 | jit_regset_setbit(&_jitc->reglive, value); |
| 3690 | /* register is not live, just remove spill/reload */ |
| 3691 | node->link->v.w = jit_regload_isdead; |
| 3692 | del_node(prev, node); |
| 3693 | continue; |
| 3694 | } |
| 3695 | else { |
| 3696 | /* failed to find a free register */ |
| 3697 | if (spec & jit_class_gpr) { |
| 3698 | if (!_jitc->function->regoff[regno]) |
| 3699 | _jitc->function->regoff[regno] = |
| 3700 | jit_allocai(sizeof(jit_word_t)); |
| 3701 | #if __WORDSIZE == 32 |
| 3702 | node->code = jit_code_stxi_i; |
| 3703 | #else |
| 3704 | node->code = jit_code_stxi_l; |
| 3705 | #endif |
| 3706 | } |
| 3707 | else { |
| 3708 | node->code = jit_code_stxi_d; |
| 3709 | if (!_jitc->function->regoff[regno]) |
| 3710 | _jitc->function->regoff[regno] = |
| 3711 | jit_allocai(sizeof(jit_float64_t)); |
| 3712 | } |
| 3713 | node->u.w = _jitc->function->regoff[regno]; |
| 3714 | node->v.w = JIT_FP; |
| 3715 | node->w.w = regno; |
| 3716 | node->link = NULL; |
| 3717 | } |
| 3718 | } |
| 3719 | break; |
| 3720 | case jit_code_load: |
| 3721 | regno = jit_regno(node->u.w); |
| 3722 | if (node->v.w) { |
| 3723 | if (node->v.w == jit_regload_isdead) |
| 3724 | jit_regset_clrbit(&_jitc->reglive, regno); |
| 3725 | del_node(prev, node); |
| 3726 | continue; |
| 3727 | } |
| 3728 | spec = jit_class(_rvs[regno].spec); |
| 3729 | if (spec & jit_class_gpr) { |
| 3730 | #if __WORDSIZE == 32 |
| 3731 | node->code = jit_code_ldxi_i; |
| 3732 | #else |
| 3733 | node->code = jit_code_ldxi_l; |
| 3734 | #endif |
| 3735 | } |
| 3736 | else |
| 3737 | node->code = jit_code_ldxi_d; |
| 3738 | node->v.w = regno; |
| 3739 | node->v.w = JIT_FP; |
| 3740 | node->w.w = _jitc->function->regoff[regno]; |
| 3741 | node->link = NULL; |
| 3742 | break; |
| 3743 | case jit_code_prolog: |
| 3744 | _jitc->function = _jitc->functions.ptr + node->w.w; |
| 3745 | break; |
| 3746 | case jit_code_epilog: |
| 3747 | _jitc->function = NULL; |
| 3748 | break; |
| 3749 | default: |
| 3750 | break; |
| 3751 | } |
| 3752 | |
| 3753 | jit_regarg_clr(node, info); |
| 3754 | /* update register live state */ |
| 3755 | jit_reglive(node); |
| 3756 | prev = node; |
| 3757 | } |
| 3758 | } |
| 3759 | |
| 3760 | static void |
| 3761 | _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link, |
| 3762 | jit_int32_t regno, jit_int32_t patch) |
| 3763 | { |
| 3764 | jit_int32_t value; |
| 3765 | |
| 3766 | for (; node != link; node = node->next) { |
| 3767 | value = jit_classify(node->code); |
| 3768 | if (value & jit_cc_a0_reg) { |
| 3769 | if (value & jit_cc_a0_rlh) { |
| 3770 | if (node->u.q.l == regno) |
| 3771 | node->u.q.l = patch; |
| 3772 | if (node->u.q.h == regno) |
| 3773 | node->u.q.h = patch; |
| 3774 | } |
| 3775 | else { |
| 3776 | if (node->u.w == regno) |
| 3777 | node->u.w = patch; |
| 3778 | } |
| 3779 | } |
| 3780 | if ((value & jit_cc_a1_reg) && node->v.w == regno) |
| 3781 | node->v.w = patch; |
| 3782 | if (value & jit_cc_a2_reg) { |
| 3783 | if (value & jit_cc_a2_rlh) { |
| 3784 | if (node->w.q.l == regno) |
| 3785 | node->w.q.l = patch; |
| 3786 | if (node->w.q.h == regno) |
| 3787 | node->w.q.h = patch; |
| 3788 | } |
| 3789 | else { |
| 3790 | if (node->w.w == regno) |
| 3791 | node->w.w = patch; |
| 3792 | } |
| 3793 | } |
| 3794 | } |
| 3795 | } |
| 3796 | |
| 3797 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
| 3798 | # define htonr_us(r0,r1) bswapr_us(r0,r1) |
| 3799 | # define htonr_ui(r0,r1) bswapr_ui(r0,r1) |
| 3800 | # if __WORDSIZE == 64 |
| 3801 | # define htonr_ul(r0,r1) bswapr_ul(r0,r1) |
| 3802 | # endif |
| 3803 | #else |
| 3804 | # define htonr_us(r0,r1) extr_us(r0,r1) |
| 3805 | # if __WORDSIZE == 32 |
| 3806 | # define htonr_ui(r0,r1) movr(r0,r1) |
| 3807 | # else |
| 3808 | # define htonr_ui(r0,r1) extr_ui(r0,r1) |
| 3809 | # define htonr_ul(r0,r1) movr(r0,r1) |
| 3810 | # endif |
| 3811 | #endif |
| 3812 | |
| 3813 | static maybe_unused void |
| 3814 | generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1); |
| 3815 | static maybe_unused void |
| 3816 | generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1); |
| 3817 | #if __WORDSIZE == 64 |
| 3818 | static maybe_unused void |
| 3819 | generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1); |
| 3820 | #endif |
| 3821 | |
| 3822 | #if defined(__i386__) || defined(__x86_64__) |
| 3823 | # include "jit_x86.c" |
| 3824 | #elif defined(__mips__) |
| 3825 | # include "jit_mips.c" |
| 3826 | #elif defined(__arm__) |
| 3827 | # include "jit_arm.c" |
| 3828 | #elif defined(__powerpc__) |
| 3829 | # include "jit_ppc.c" |
| 3830 | #elif defined(__sparc__) |
| 3831 | # include "jit_sparc.c" |
| 3832 | #elif defined(__ia64__) |
| 3833 | # include "jit_ia64.c" |
| 3834 | #elif defined(__hppa__) |
| 3835 | # include "jit_hppa.c" |
| 3836 | #elif defined(__aarch64__) |
| 3837 | # include "jit_aarch64.c" |
| 3838 | #elif defined(__s390__) || defined(__s390x__) |
| 3839 | # include "jit_s390.c" |
| 3840 | #elif defined(__alpha__) |
| 3841 | # include "jit_alpha.c" |
| 3842 | #elif defined(__riscv) |
| 3843 | # include "jit_riscv.c" |
| 3844 | #endif |
| 3845 | |
| 3846 | static maybe_unused void |
| 3847 | generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1) |
| 3848 | { |
| 3849 | jit_int32_t reg = jit_get_reg(jit_class_gpr); |
| 3850 | |
| 3851 | rshi(rn(reg), r1, 8); |
| 3852 | andi(r0, r1, 0xff); |
| 3853 | andi(rn(reg), rn(reg), 0xff); |
| 3854 | lshi(r0, r0, 8); |
| 3855 | orr(r0, r0, rn(reg)); |
| 3856 | |
| 3857 | jit_unget_reg(reg); |
| 3858 | } |
| 3859 | |
| 3860 | static maybe_unused void |
| 3861 | generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1) |
| 3862 | { |
| 3863 | jit_int32_t reg = jit_get_reg(jit_class_gpr); |
| 3864 | |
| 3865 | rshi(rn(reg), r1, 16); |
| 3866 | bswapr_us(r0, r1); |
| 3867 | bswapr_us(rn(reg), rn(reg)); |
| 3868 | lshi(r0, r0, 16); |
| 3869 | orr(r0, r0, rn(reg)); |
| 3870 | |
| 3871 | jit_unget_reg(reg); |
| 3872 | } |
| 3873 | |
| 3874 | #if __WORDSIZE == 64 |
| 3875 | static maybe_unused void |
| 3876 | generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1) |
| 3877 | { |
| 3878 | jit_int32_t reg = jit_get_reg(jit_class_gpr); |
| 3879 | |
| 3880 | rshi_u(rn(reg), r1, 32); |
| 3881 | bswapr_ui(r0, r1); |
| 3882 | bswapr_ui(rn(reg), rn(reg)); |
| 3883 | lshi(r0, r0, 32); |
| 3884 | orr(r0, r0, rn(reg)); |
| 3885 | |
| 3886 | jit_unget_reg(reg); |
| 3887 | } |
| 3888 | #endif |