| 1 | /* |
| 2 | * Copyright (C) 2013-2023 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 defined(__linux__) |
| 23 | # include <sys/syscall.h> |
| 24 | # include <unistd.h> |
| 25 | #endif |
| 26 | |
| 27 | #define jit_arg_reg_p(i) (i >= 0 && i < 4) |
| 28 | |
| 29 | #define PROTO 1 |
| 30 | # include "jit_hppa-cpu.c" |
| 31 | # include "jit_hppa-fpu.c" |
| 32 | # include "jit_fallback.c" |
| 33 | #undef PROTO |
| 34 | |
| 35 | /* |
| 36 | * Types |
| 37 | */ |
| 38 | typedef jit_pointer_t jit_va_list; |
| 39 | |
| 40 | /* |
| 41 | * Prototypes |
| 42 | */ |
| 43 | #define patch(instr, node) _patch(_jit, instr, node) |
| 44 | static void _patch(jit_state_t*,jit_word_t,jit_node_t*); |
| 45 | |
| 46 | /* libgcc */ |
| 47 | extern void __clear_cache(void *, void *); |
| 48 | |
| 49 | /* |
| 50 | * Initialization |
| 51 | */ |
| 52 | jit_register_t _rvs[] = { |
| 53 | { 0, "r0" }, /* Zero */ |
| 54 | /* Not register starved, so, avoid allocating r1 and rp |
| 55 | * due to being implicit target of ADDIL and B,L */ |
| 56 | { 1, "r1" }, /* Scratch */ |
| 57 | { 2, "rp" }, /* Return Pointer and scratch */ |
| 58 | { rc(sav) | 3, "r3" }, |
| 59 | { 19, "r19" }, /* Linkage Table */ |
| 60 | { rc(gpr) | 20, "r20" }, |
| 61 | { rc(gpr) | 21, "r21" }, |
| 62 | { rc(gpr) | 22, "r22" }, |
| 63 | { rc(gpr) | 29, "ret1" }, |
| 64 | { rc(gpr) | 28, "ret0" }, |
| 65 | /* JIT_Rx in callee save registers due to need to call |
| 66 | * functions to implement some instructions */ |
| 67 | /* JIT_R0- JIT_R2 */ |
| 68 | { rc(gpr) | rc(sav) | 4, "r4" }, |
| 69 | { rc(gpr) | rc(sav) | 5, "r5" }, |
| 70 | { rc(gpr) | rc(sav) | 6, "r6" }, |
| 71 | /* JIT_V0- JIT_V2 */ |
| 72 | { rc(gpr) | rc(sav) | 7, "r7" }, |
| 73 | { rc(sav) | rc(sav) | 8, "r8" }, |
| 74 | { rc(gpr) | rc(sav) | 9, "r9" }, |
| 75 | /* JIT_R3 */ |
| 76 | { rc(gpr) | rc(sav) | 10, "r10" }, |
| 77 | /* JIT_V3+ */ |
| 78 | { rc(gpr) | rc(sav) | 11, "r11" }, |
| 79 | { rc(gpr) | rc(sav) | 12, "r12" }, |
| 80 | { rc(gpr) | rc(sav) | 13, "r13" }, |
| 81 | { rc(gpr) | rc(sav) | 14, "r14" }, |
| 82 | { rc(gpr) | rc(sav) | 15, "r15" }, |
| 83 | { rc(gpr) | rc(sav) | 16, "r16" }, |
| 84 | { rc(gpr) | rc(sav) | 17, "r17" }, |
| 85 | { rc(gpr) | rc(sav) | 18, "r18" }, |
| 86 | /* Arguments */ |
| 87 | { rc(gpr) | rc(arg) | 23, "r23" }, |
| 88 | { rc(gpr) | rc(arg) | 24, "r24" }, |
| 89 | { rc(gpr) | rc(arg) | 25, "r25" }, |
| 90 | { rc(gpr) | rc(arg) | 26, "r26" }, |
| 91 | { 27, "dp" }, /* Data Pointer */ |
| 92 | { 30, "sp" }, |
| 93 | { 31, "r31" }, /* Link Register */ |
| 94 | { rc(fpr) | 31, "fr31" }, |
| 95 | { rc(fpr) | 30, "fr30" }, |
| 96 | { rc(fpr) | 29, "fr29" }, |
| 97 | { rc(fpr) | 28, "fr28" }, |
| 98 | { rc(fpr) | 27, "fr27" }, |
| 99 | { rc(fpr) | 26, "fr26" }, |
| 100 | { rc(fpr) | 25, "fr25" }, |
| 101 | { rc(fpr) | 24, "fr24" }, |
| 102 | { rc(fpr) | 23, "fr23" }, |
| 103 | { rc(fpr) | 22, "fr22" }, |
| 104 | { rc(fpr) | 11, "fr11" }, |
| 105 | { rc(fpr) | 10, "fr10" }, |
| 106 | { rc(fpr) | 9, "fr9" }, |
| 107 | { rc(fpr) | 8, "fr8" }, |
| 108 | /* Arguments */ |
| 109 | { rc(fpr) | rc(arg) | 7, "fr7" }, |
| 110 | { rc(fpr) | rc(arg) | 6, "fr6" }, |
| 111 | { rc(fpr) | rc(arg) | 5, "fr5" }, |
| 112 | { rc(fpr) | rc(arg) | 4, "fr4" }, |
| 113 | /* Callee Saves */ |
| 114 | { rc(fpr) | rc(sav) | 21, "fr21" }, |
| 115 | { rc(fpr) | rc(sav) | 20, "fr20" }, |
| 116 | { rc(fpr) | rc(sav) | 19, "fr19" }, |
| 117 | { rc(fpr) | rc(sav) | 18, "fr18" }, |
| 118 | { rc(fpr) | rc(sav) | 17, "fr17" }, |
| 119 | { rc(fpr) | rc(sav) | 16, "fr16" }, |
| 120 | { rc(fpr) | rc(sav) | 15, "fr15" }, |
| 121 | { rc(fpr) | rc(sav) | 14, "fr14" }, |
| 122 | { rc(fpr) | rc(sav) | 13, "fr13" }, |
| 123 | { rc(fpr) | rc(sav) | 12, "fr12" }, |
| 124 | { 0, "fpsr" }, |
| 125 | { 1, "fpe2" }, |
| 126 | { 2, "fpe4" }, |
| 127 | { 3, "fpe6" }, |
| 128 | { _NOREG, "<none>" }, |
| 129 | }; |
| 130 | |
| 131 | /* |
| 132 | * Implementation |
| 133 | */ |
| 134 | void |
| 135 | jit_get_cpu(void) |
| 136 | { |
| 137 | /* FIXME Expecting PARISC 2.0, for PARISC 1.0 should not use fr16-fr31 */ |
| 138 | } |
| 139 | |
| 140 | void |
| 141 | _jit_init(jit_state_t *_jit) |
| 142 | { |
| 143 | _jitc->reglen = jit_size(_rvs) - 1; |
| 144 | } |
| 145 | |
| 146 | void |
| 147 | _jit_prolog(jit_state_t *_jit) |
| 148 | { |
| 149 | jit_int32_t offset; |
| 150 | |
| 151 | if (_jitc->function) |
| 152 | jit_epilog(); |
| 153 | assert(jit_regset_cmp_ui(&_jitc->regarg, 0) == 0); |
| 154 | jit_regset_set_ui(&_jitc->regsav, 0); |
| 155 | offset = _jitc->functions.offset; |
| 156 | if (offset >= _jitc->functions.length) { |
| 157 | jit_realloc((jit_pointer_t *)&_jitc->functions.ptr, |
| 158 | _jitc->functions.length * sizeof(jit_function_t), |
| 159 | (_jitc->functions.length + 16) * sizeof(jit_function_t)); |
| 160 | _jitc->functions.length += 16; |
| 161 | } |
| 162 | _jitc->function = _jitc->functions.ptr + _jitc->functions.offset++; |
| 163 | _jitc->function->self.size = params_offset; |
| 164 | _jitc->function->self.argi = _jitc->function->self.alen = 0; |
| 165 | /* float conversion */ |
| 166 | _jitc->function->self.aoff = alloca_offset; |
| 167 | _jitc->function->self.call = jit_call_default; |
| 168 | jit_alloc((jit_pointer_t *)&_jitc->function->regoff, |
| 169 | _jitc->reglen * sizeof(jit_int32_t)); |
| 170 | |
| 171 | /* _no_link here does not mean the jit_link() call can be removed |
| 172 | * by rewriting as: |
| 173 | * _jitc->function->prolog = jit_new_node(jit_code_prolog); |
| 174 | */ |
| 175 | _jitc->function->prolog = jit_new_node_no_link(jit_code_prolog); |
| 176 | jit_link(_jitc->function->prolog); |
| 177 | _jitc->function->prolog->w.w = offset; |
| 178 | _jitc->function->epilog = jit_new_node_no_link(jit_code_epilog); |
| 179 | /* u: label value |
| 180 | * v: offset in blocks vector |
| 181 | * w: offset in functions vector |
| 182 | */ |
| 183 | _jitc->function->epilog->w.w = offset; |
| 184 | |
| 185 | jit_regset_new(&_jitc->function->regset); |
| 186 | } |
| 187 | |
| 188 | jit_int32_t |
| 189 | _jit_allocai(jit_state_t *_jit, jit_int32_t length) |
| 190 | { |
| 191 | jit_int32_t offset; |
| 192 | assert(_jitc->function); |
| 193 | switch (length) { |
| 194 | case 0: case 1: |
| 195 | break; |
| 196 | case 2: |
| 197 | _jitc->function->self.aoff = (_jitc->function->self.aoff + 1) & -2; |
| 198 | break; |
| 199 | case 3: case 4: |
| 200 | _jitc->function->self.aoff = (_jitc->function->self.aoff + 3) & -4; |
| 201 | break; |
| 202 | default: |
| 203 | _jitc->function->self.aoff = (_jitc->function->self.aoff + 7) & -8; |
| 204 | break; |
| 205 | } |
| 206 | if (!_jitc->realize) { |
| 207 | jit_inc_synth_ww(allocai, _jitc->function->self.aoff, length); |
| 208 | jit_dec_synth(); |
| 209 | } |
| 210 | offset = _jitc->function->self.aoff; |
| 211 | _jitc->function->self.aoff += length; |
| 212 | return (offset); |
| 213 | } |
| 214 | |
| 215 | void |
| 216 | _jit_allocar(jit_state_t *_jit, jit_int32_t u, jit_int32_t v) |
| 217 | { |
| 218 | jit_int32_t reg; |
| 219 | assert(_jitc->function); |
| 220 | jit_inc_synth_ww(allocar, u, v); |
| 221 | if (!_jitc->function->allocar) { |
| 222 | _jitc->function->aoffoff = jit_allocai(sizeof(jit_int32_t)); |
| 223 | _jitc->function->allocar = 1; |
| 224 | } |
| 225 | reg = jit_get_reg(jit_class_gpr); |
| 226 | jit_addi(reg, v, 63); |
| 227 | jit_andi(reg, reg, -64); |
| 228 | jit_ldxi_i(u, JIT_FP, _jitc->function->aoffoff); |
| 229 | jit_addr(JIT_SP, JIT_SP, reg); |
| 230 | jit_stxi_i(_jitc->function->aoffoff, JIT_FP, u); |
| 231 | jit_unget_reg(reg); |
| 232 | jit_dec_synth(); |
| 233 | } |
| 234 | |
| 235 | void |
| 236 | _jit_ret(jit_state_t *_jit) |
| 237 | { |
| 238 | jit_node_t *instr; |
| 239 | assert(_jitc->function); |
| 240 | jit_inc_synth(ret); |
| 241 | /* jump to epilog */ |
| 242 | instr = jit_jmpi(); |
| 243 | jit_patch_at(instr, _jitc->function->epilog); |
| 244 | jit_dec_synth(); |
| 245 | } |
| 246 | |
| 247 | void |
| 248 | _jit_retr(jit_state_t *_jit, jit_int32_t u, jit_code_t code) |
| 249 | { |
| 250 | jit_code_inc_synth_w(code, u); |
| 251 | jit_movr(JIT_RET, u); |
| 252 | jit_ret(); |
| 253 | jit_dec_synth(); |
| 254 | } |
| 255 | |
| 256 | void |
| 257 | _jit_reti(jit_state_t *_jit, jit_word_t u, jit_code_t code) |
| 258 | { |
| 259 | jit_code_inc_synth_w(code, u); |
| 260 | jit_movi(JIT_RET, u); |
| 261 | jit_ret(); |
| 262 | jit_dec_synth(); |
| 263 | } |
| 264 | |
| 265 | void |
| 266 | _jit_retr_f(jit_state_t *_jit, jit_int32_t u) |
| 267 | { |
| 268 | jit_inc_synth_w(retr_f, u); |
| 269 | jit_movr_f(JIT_FRET, u); |
| 270 | jit_ret(); |
| 271 | jit_dec_synth(); |
| 272 | } |
| 273 | |
| 274 | void |
| 275 | _jit_reti_f(jit_state_t *_jit, jit_float32_t u) |
| 276 | { |
| 277 | jit_inc_synth_f(reti_f, u); |
| 278 | jit_movi_f(JIT_FRET, u); |
| 279 | jit_ret(); |
| 280 | jit_dec_synth(); |
| 281 | } |
| 282 | |
| 283 | void |
| 284 | _jit_retr_d(jit_state_t *_jit, jit_int32_t u) |
| 285 | { |
| 286 | jit_inc_synth_w(retr_d, u); |
| 287 | jit_movr_d(JIT_FRET, u); |
| 288 | jit_ret(); |
| 289 | jit_dec_synth(); |
| 290 | } |
| 291 | |
| 292 | void |
| 293 | _jit_reti_d(jit_state_t *_jit, jit_float64_t u) |
| 294 | { |
| 295 | jit_inc_synth_d(reti_d, u); |
| 296 | jit_movi_d(JIT_FRET, u); |
| 297 | jit_ret(); |
| 298 | jit_dec_synth(); |
| 299 | } |
| 300 | |
| 301 | void |
| 302 | _jit_epilog(jit_state_t *_jit) |
| 303 | { |
| 304 | assert(_jitc->function); |
| 305 | assert(_jitc->function->epilog->next == NULL); |
| 306 | jit_link(_jitc->function->epilog); |
| 307 | _jitc->function = NULL; |
| 308 | } |
| 309 | |
| 310 | jit_bool_t |
| 311 | _jit_arg_register_p(jit_state_t *_jit, jit_node_t *u) |
| 312 | { |
| 313 | assert((u->code >= jit_code_arg_c && u->code <= jit_code_arg) || |
| 314 | u->code == jit_code_arg_f || u->code == jit_code_arg_d); |
| 315 | return (jit_arg_reg_p(u->u.w)); |
| 316 | } |
| 317 | |
| 318 | void |
| 319 | _jit_ellipsis(jit_state_t *_jit) |
| 320 | { |
| 321 | jit_inc_synth(ellipsis); |
| 322 | if (_jitc->prepare) { |
| 323 | jit_link_prepare(); |
| 324 | assert(!(_jitc->function->call.call & jit_call_varargs)); |
| 325 | _jitc->function->call.call |= jit_call_varargs; |
| 326 | } |
| 327 | else { |
| 328 | jit_link_prolog(); |
| 329 | assert(!(_jitc->function->self.call & jit_call_varargs)); |
| 330 | _jitc->function->self.call |= jit_call_varargs; |
| 331 | |
| 332 | _jitc->function->vagp = _jitc->function->self.argi; |
| 333 | } |
| 334 | jit_dec_synth(); |
| 335 | } |
| 336 | |
| 337 | void |
| 338 | _jit_va_push(jit_state_t *_jit, jit_int32_t u) |
| 339 | { |
| 340 | jit_inc_synth_w(va_push, u); |
| 341 | jit_pushargr(u); |
| 342 | jit_dec_synth(); |
| 343 | } |
| 344 | |
| 345 | jit_node_t * |
| 346 | _jit_arg(jit_state_t *_jit, jit_code_t code) |
| 347 | { |
| 348 | jit_node_t *node; |
| 349 | jit_int32_t offset; |
| 350 | assert(_jitc->function); |
| 351 | assert(!(_jitc->function->self.call & jit_call_varargs)); |
| 352 | #if STRONG_TYPE_CHECKING |
| 353 | assert(code >= jit_code_arg_c && code <= jit_code_arg); |
| 354 | #endif |
| 355 | _jitc->function->self.size -= sizeof(jit_word_t); |
| 356 | if (jit_arg_reg_p(_jitc->function->self.argi)) |
| 357 | offset = _jitc->function->self.argi++; |
| 358 | else |
| 359 | offset = _jitc->function->self.size; |
| 360 | node = jit_new_node_ww(code, offset, |
| 361 | ++_jitc->function->self.argn); |
| 362 | jit_link_prolog(); |
| 363 | return (node); |
| 364 | } |
| 365 | |
| 366 | jit_node_t * |
| 367 | _jit_arg_f(jit_state_t *_jit) |
| 368 | { |
| 369 | jit_node_t *node; |
| 370 | jit_int32_t offset; |
| 371 | assert(_jitc->function); |
| 372 | _jitc->function->self.size -= sizeof(jit_word_t); |
| 373 | if (jit_arg_reg_p(_jitc->function->self.argi)) |
| 374 | offset = _jitc->function->self.argi++; |
| 375 | else |
| 376 | offset = _jitc->function->self.size; |
| 377 | node = jit_new_node_ww(jit_code_arg_f, offset, |
| 378 | ++_jitc->function->self.argn); |
| 379 | jit_link_prolog(); |
| 380 | return (node); |
| 381 | } |
| 382 | |
| 383 | jit_node_t * |
| 384 | _jit_arg_d(jit_state_t *_jit) |
| 385 | { |
| 386 | jit_node_t *node; |
| 387 | jit_int32_t offset; |
| 388 | assert(_jitc->function); |
| 389 | if (_jitc->function->self.argi & 1) { |
| 390 | ++_jitc->function->self.argi; |
| 391 | _jitc->function->self.size -= sizeof(jit_word_t); |
| 392 | } |
| 393 | _jitc->function->self.size -= sizeof(jit_float64_t); |
| 394 | if (jit_arg_reg_p(_jitc->function->self.argi)) { |
| 395 | offset = _jitc->function->self.argi + 1; |
| 396 | _jitc->function->self.argi += 2; |
| 397 | } |
| 398 | else { |
| 399 | /* "Standard" initial value (-52) is unaligned */ |
| 400 | if (_jitc->function->self.size & 7) |
| 401 | _jitc->function->self.size -= sizeof(jit_word_t); |
| 402 | offset = _jitc->function->self.size; |
| 403 | } |
| 404 | node = jit_new_node_ww(jit_code_arg_d, offset, |
| 405 | ++_jitc->function->self.argn); |
| 406 | jit_link_prolog(); |
| 407 | return (node); |
| 408 | } |
| 409 | |
| 410 | void |
| 411 | _jit_getarg_c(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 412 | { |
| 413 | assert_arg_type(v->code, jit_code_arg_c); |
| 414 | jit_inc_synth_wp(getarg_c, u, v); |
| 415 | if (v->u.w >= 0) |
| 416 | jit_extr_c(u, _R26 - v->u.w); |
| 417 | else |
| 418 | jit_ldxi_c(u, JIT_FP, v->u.w + 3); |
| 419 | jit_dec_synth(); |
| 420 | } |
| 421 | |
| 422 | void |
| 423 | _jit_getarg_uc(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 424 | { |
| 425 | assert_arg_type(v->code, jit_code_arg_c); |
| 426 | jit_inc_synth_wp(getarg_uc, u, v); |
| 427 | if (v->u.w >= 0) |
| 428 | jit_extr_uc(u, _R26 - v->u.w); |
| 429 | else |
| 430 | jit_ldxi_uc(u, JIT_FP, v->u.w + 3); |
| 431 | jit_dec_synth(); |
| 432 | } |
| 433 | |
| 434 | void |
| 435 | _jit_getarg_s(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 436 | { |
| 437 | assert_arg_type(v->code, jit_code_arg_s); |
| 438 | jit_inc_synth_wp(getarg_s, u, v); |
| 439 | if (v->u.w >= 0) |
| 440 | jit_extr_s(u, _R26 - v->u.w); |
| 441 | else |
| 442 | jit_ldxi_s(u, JIT_FP, v->u.w + 2); |
| 443 | jit_dec_synth(); |
| 444 | } |
| 445 | |
| 446 | void |
| 447 | _jit_getarg_us(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 448 | { |
| 449 | assert_arg_type(v->code, jit_code_arg_s); |
| 450 | jit_inc_synth_wp(getarg_us, u, v); |
| 451 | if (v->u.w >= 0) |
| 452 | jit_extr_us(u, _R26 - v->u.w); |
| 453 | else |
| 454 | jit_ldxi_us(u, JIT_FP, v->u.w + 2); |
| 455 | jit_dec_synth(); |
| 456 | } |
| 457 | |
| 458 | void |
| 459 | _jit_getarg_i(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 460 | { |
| 461 | assert_arg_type(v->code, jit_code_arg_i); |
| 462 | jit_inc_synth_wp(getarg_i, u, v); |
| 463 | if (v->u.w >= 0) |
| 464 | jit_movr(u, _R26 - v->u.w); |
| 465 | else |
| 466 | jit_ldxi_i(u, JIT_FP, v->u.w); |
| 467 | jit_dec_synth(); |
| 468 | } |
| 469 | |
| 470 | void |
| 471 | _jit_putargr(jit_state_t *_jit, jit_int32_t u, jit_node_t *v, jit_code_t code) |
| 472 | { |
| 473 | assert_putarg_type(code, v->code); |
| 474 | jit_code_inc_synth_wp(code, u, v); |
| 475 | if (v->u.w >= 0) |
| 476 | jit_movr(_R26 - v->u.w, u); |
| 477 | else |
| 478 | jit_stxi(v->u.w, JIT_FP, u); |
| 479 | jit_dec_synth(); |
| 480 | } |
| 481 | |
| 482 | void |
| 483 | _jit_putargi(jit_state_t *_jit, jit_word_t u, jit_node_t *v, jit_code_t code) |
| 484 | { |
| 485 | jit_int32_t regno; |
| 486 | assert_putarg_type(code, v->code); |
| 487 | jit_code_inc_synth_wp(code, u, v); |
| 488 | if (v->u.w >= 0) |
| 489 | jit_movi(_R26 - v->u.w, u); |
| 490 | else { |
| 491 | regno = jit_get_reg(jit_class_gpr); |
| 492 | jit_movi(regno, u); |
| 493 | jit_stxi(v->u.w, JIT_FP, regno); |
| 494 | jit_unget_reg(regno); |
| 495 | } |
| 496 | jit_dec_synth(); |
| 497 | } |
| 498 | |
| 499 | void |
| 500 | _jit_getarg_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 501 | { |
| 502 | assert(v->code == jit_code_arg_f); |
| 503 | jit_inc_synth_wp(getarg_f, u, v); |
| 504 | if (v->u.w >= 0) |
| 505 | jit_movr_f(u, _F4 - v->u.w); |
| 506 | else |
| 507 | jit_ldxi_f(u, JIT_FP, v->u.w); |
| 508 | jit_dec_synth(); |
| 509 | } |
| 510 | |
| 511 | void |
| 512 | _jit_putargr_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 513 | { |
| 514 | assert(v->code == jit_code_arg_f); |
| 515 | jit_inc_synth_wp(putargr_f, u, v); |
| 516 | if (v->u.w >= 0) |
| 517 | jit_movr_f(_F4 - v->u.w, u); |
| 518 | else |
| 519 | jit_stxi_f(v->u.w, JIT_FP, u); |
| 520 | jit_dec_synth(); |
| 521 | } |
| 522 | |
| 523 | void |
| 524 | _jit_putargi_f(jit_state_t *_jit, jit_float32_t u, jit_node_t *v) |
| 525 | { |
| 526 | jit_int32_t regno; |
| 527 | assert(v->code == jit_code_arg_f); |
| 528 | jit_inc_synth_fp(putargi_f, u, v); |
| 529 | if (v->u.w >= 0) |
| 530 | jit_movi_f(_R26 - v->u.w, u); |
| 531 | else { |
| 532 | regno = jit_get_reg(jit_class_fpr); |
| 533 | jit_movi_f(regno, u); |
| 534 | jit_stxi_f(v->u.w, JIT_FP, regno); |
| 535 | jit_unget_reg(regno); |
| 536 | } |
| 537 | jit_dec_synth(); |
| 538 | } |
| 539 | |
| 540 | void |
| 541 | _jit_getarg_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 542 | { |
| 543 | assert(v->code == jit_code_arg_d); |
| 544 | jit_inc_synth_wp(getarg_d, u, v); |
| 545 | if (v->u.w >= 0) |
| 546 | jit_movr_d(u, _F4 - v->u.w); |
| 547 | else |
| 548 | jit_ldxi_d(u, JIT_FP, v->u.w); |
| 549 | jit_dec_synth(); |
| 550 | } |
| 551 | |
| 552 | void |
| 553 | _jit_putargr_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v) |
| 554 | { |
| 555 | assert(v->code == jit_code_arg_d); |
| 556 | jit_inc_synth_wp(putargr_d, u, v); |
| 557 | if (v->u.w >= 0) |
| 558 | jit_movr_d(_F4 - v->u.w, u); |
| 559 | else |
| 560 | jit_stxi_d(v->u.w, JIT_FP, u); |
| 561 | jit_dec_synth(); |
| 562 | } |
| 563 | |
| 564 | void |
| 565 | _jit_putargi_d(jit_state_t *_jit, jit_float64_t u, jit_node_t *v) |
| 566 | { |
| 567 | jit_int32_t regno; |
| 568 | assert(v->code == jit_code_arg_d); |
| 569 | jit_inc_synth_dp(putargi_d, u, v); |
| 570 | if (v->u.w >= 0) |
| 571 | jit_movi_d(_R26 - v->u.w, u); |
| 572 | else { |
| 573 | regno = jit_get_reg(jit_class_fpr); |
| 574 | jit_movi_d(regno, u); |
| 575 | jit_stxi_d(v->u.w, JIT_FP, regno); |
| 576 | jit_unget_reg(regno); |
| 577 | } |
| 578 | jit_dec_synth(); |
| 579 | } |
| 580 | |
| 581 | void |
| 582 | _jit_pushargr(jit_state_t *_jit, jit_int32_t u, jit_code_t code) |
| 583 | { |
| 584 | assert(_jitc->function); |
| 585 | jit_code_inc_synth_w(code, u); |
| 586 | jit_link_prepare(); |
| 587 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 588 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 589 | jit_movr(_R26 - _jitc->function->call.argi, u); |
| 590 | ++_jitc->function->call.argi; |
| 591 | } |
| 592 | else |
| 593 | jit_stxi(_jitc->function->call.size + params_offset, JIT_SP, u); |
| 594 | jit_dec_synth(); |
| 595 | } |
| 596 | |
| 597 | void |
| 598 | _jit_pushargi(jit_state_t *_jit, jit_word_t u, jit_code_t code) |
| 599 | { |
| 600 | jit_int32_t regno; |
| 601 | assert(_jitc->function); |
| 602 | jit_code_inc_synth_w(code, u); |
| 603 | jit_link_prepare(); |
| 604 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 605 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 606 | jit_movi(_R26 - _jitc->function->call.argi, u); |
| 607 | ++_jitc->function->call.argi; |
| 608 | } |
| 609 | else { |
| 610 | regno = jit_get_reg(jit_class_gpr); |
| 611 | jit_movi(regno, u); |
| 612 | jit_stxi(_jitc->function->call.size + params_offset, JIT_SP, regno); |
| 613 | jit_unget_reg(regno); |
| 614 | } |
| 615 | jit_dec_synth(); |
| 616 | } |
| 617 | |
| 618 | void |
| 619 | _jit_pushargr_f(jit_state_t *_jit, jit_int32_t u) |
| 620 | { |
| 621 | assert(_jitc->function); |
| 622 | jit_inc_synth_w(pushargr_f, u); |
| 623 | jit_link_prepare(); |
| 624 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 625 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 626 | jit_movr_f(_F4 - _jitc->function->call.argi, u); |
| 627 | #if !defined(__hpux) |
| 628 | /* HP-UX appears to always pass float arguments in gpr registers */ |
| 629 | if (_jitc->function->call.call & jit_call_varargs) |
| 630 | #endif |
| 631 | { |
| 632 | jit_stxi_f(alloca_offset - 8, JIT_FP, u); |
| 633 | jit_ldxi(_R26 - _jitc->function->call.argi, JIT_FP, |
| 634 | alloca_offset - 8); |
| 635 | } |
| 636 | ++_jitc->function->call.argi; |
| 637 | } |
| 638 | else |
| 639 | jit_stxi_f(_jitc->function->call.size + params_offset, JIT_SP, u); |
| 640 | jit_dec_synth(); |
| 641 | } |
| 642 | |
| 643 | void |
| 644 | _jit_pushargi_f(jit_state_t *_jit, jit_float32_t u) |
| 645 | { |
| 646 | jit_int32_t regno; |
| 647 | assert(_jitc->function); |
| 648 | jit_inc_synth_f(pushargi_f, u); |
| 649 | jit_link_prepare(); |
| 650 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 651 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 652 | jit_movi_f(_F4 - _jitc->function->call.argi, u); |
| 653 | #if !defined(__hpux) |
| 654 | /* HP-UX appears to always pass float arguments in gpr registers */ |
| 655 | if (_jitc->function->call.call & jit_call_varargs) |
| 656 | #endif |
| 657 | { |
| 658 | jit_stxi_f(alloca_offset - 8, JIT_FP, |
| 659 | _F4 - _jitc->function->call.argi); |
| 660 | jit_ldxi(_R26 - _jitc->function->call.argi, |
| 661 | JIT_FP, alloca_offset - 8); |
| 662 | } |
| 663 | ++_jitc->function->call.argi; |
| 664 | } |
| 665 | else { |
| 666 | regno = jit_get_reg(jit_class_fpr); |
| 667 | jit_movi_f(regno, u); |
| 668 | jit_stxi_f(_jitc->function->call.size + params_offset, JIT_SP, regno); |
| 669 | jit_unget_reg(regno); |
| 670 | } |
| 671 | jit_dec_synth(); |
| 672 | } |
| 673 | |
| 674 | void |
| 675 | _jit_pushargr_d(jit_state_t *_jit, jit_int32_t u) |
| 676 | { |
| 677 | assert(_jitc->function); |
| 678 | jit_inc_synth_w(pushargr_d, u); |
| 679 | jit_link_prepare(); |
| 680 | _jitc->function->call.size -= sizeof(jit_float64_t); |
| 681 | if (_jitc->function->call.argi & 1) { |
| 682 | ++_jitc->function->call.argi; |
| 683 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 684 | } |
| 685 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 686 | jit_movr_d(_F4 - (_jitc->function->call.argi + 1), u); |
| 687 | #if !defined(__hpux) |
| 688 | /* HP-UX appears to always pass float arguments in gpr registers */ |
| 689 | if (_jitc->function->call.call & jit_call_varargs) |
| 690 | #endif |
| 691 | { |
| 692 | jit_stxi_d(alloca_offset - 8, JIT_FP, u); |
| 693 | jit_ldxi(_R26 - _jitc->function->call.argi, |
| 694 | JIT_FP, alloca_offset - 4); |
| 695 | jit_ldxi(_R25 - _jitc->function->call.argi, |
| 696 | JIT_FP, alloca_offset - 8); |
| 697 | } |
| 698 | _jitc->function->call.argi += 2; |
| 699 | } |
| 700 | else { |
| 701 | /* "Standard" initial value (-52) is unaligned */ |
| 702 | if ((_jitc->function->call.size + params_offset) & 7) |
| 703 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 704 | jit_stxi_d(_jitc->function->call.size + params_offset, JIT_SP, u); |
| 705 | } |
| 706 | jit_dec_synth(); |
| 707 | } |
| 708 | |
| 709 | void |
| 710 | _jit_pushargi_d(jit_state_t *_jit, jit_float64_t u) |
| 711 | { |
| 712 | jit_int32_t regno; |
| 713 | assert(_jitc->function); |
| 714 | jit_inc_synth_d(pushargi_d, u); |
| 715 | jit_link_prepare(); |
| 716 | _jitc->function->call.size -= sizeof(jit_float64_t); |
| 717 | if (_jitc->function->call.argi & 1) { |
| 718 | ++_jitc->function->call.argi; |
| 719 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 720 | } |
| 721 | if (jit_arg_reg_p(_jitc->function->call.argi)) { |
| 722 | jit_movi_d(_F4 - (_jitc->function->call.argi + 1), u); |
| 723 | #if !defined(__hpux) |
| 724 | /* HP-UX appears to always pass float arguments in gpr registers */ |
| 725 | if (_jitc->function->call.call & jit_call_varargs) |
| 726 | #endif |
| 727 | { |
| 728 | jit_stxi_d(alloca_offset - 8, JIT_FP, |
| 729 | _F4 - (_jitc->function->call.argi + 1)); |
| 730 | jit_ldxi(_R26 - _jitc->function->call.argi, |
| 731 | JIT_FP, alloca_offset - 4); |
| 732 | jit_ldxi(_R25 - _jitc->function->call.argi, |
| 733 | JIT_FP, alloca_offset - 8); |
| 734 | } |
| 735 | _jitc->function->call.argi += 2; |
| 736 | } |
| 737 | else { |
| 738 | regno = jit_get_reg(jit_class_fpr); |
| 739 | jit_movi_d(regno, u); |
| 740 | if ((_jitc->function->call.size + params_offset) & 7) |
| 741 | _jitc->function->call.size -= sizeof(jit_word_t); |
| 742 | jit_stxi_d(_jitc->function->call.size + params_offset, JIT_SP, regno); |
| 743 | jit_unget_reg(regno); |
| 744 | } |
| 745 | jit_dec_synth(); |
| 746 | } |
| 747 | |
| 748 | jit_bool_t |
| 749 | _jit_regarg_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno) |
| 750 | { |
| 751 | jit_int32_t spec; |
| 752 | spec = jit_class(_rvs[regno].spec); |
| 753 | if (spec & jit_class_arg) { |
| 754 | if (spec & jit_class_gpr) { |
| 755 | regno -= _R23; |
| 756 | if (regno >= 0 && regno < node->v.w) |
| 757 | return (1); |
| 758 | } |
| 759 | else if (spec & jit_class_fpr) { |
| 760 | regno = _F4 - regno; |
| 761 | if (regno >= 0 && regno < node->w.w) |
| 762 | return (1); |
| 763 | } |
| 764 | } |
| 765 | return (0); |
| 766 | } |
| 767 | |
| 768 | void |
| 769 | _jit_finishr(jit_state_t *_jit, jit_int32_t r0) |
| 770 | { |
| 771 | jit_node_t *call; |
| 772 | assert(_jitc->function); |
| 773 | jit_inc_synth_w(finishr, r0); |
| 774 | if (_jitc->function->self.alen > _jitc->function->call.size) |
| 775 | _jitc->function->self.alen = _jitc->function->call.size; |
| 776 | call = jit_callr(r0); |
| 777 | call->v.w = call->w.w = _jitc->function->call.argi; |
| 778 | _jitc->function->call.argi = _jitc->function->call.size = 0; |
| 779 | _jitc->prepare = 0; |
| 780 | jit_dec_synth(); |
| 781 | } |
| 782 | |
| 783 | jit_node_t * |
| 784 | _jit_finishi(jit_state_t *_jit, jit_pointer_t i0) |
| 785 | { |
| 786 | jit_node_t *node; |
| 787 | assert(_jitc->function); |
| 788 | jit_inc_synth_w(finishi, (jit_word_t)i0); |
| 789 | if (_jitc->function->self.alen > _jitc->function->call.size) |
| 790 | _jitc->function->self.alen = _jitc->function->call.size; |
| 791 | node = jit_calli(i0); |
| 792 | node->v.w = node->w.w = _jitc->function->call.argi; |
| 793 | _jitc->function->call.argi = _jitc->function->call.size = 0; |
| 794 | _jitc->prepare = 0; |
| 795 | jit_dec_synth(); |
| 796 | return (node); |
| 797 | } |
| 798 | |
| 799 | void |
| 800 | _jit_retval_c(jit_state_t *_jit, jit_int32_t r0) |
| 801 | { |
| 802 | jit_inc_synth_w(retval_c, r0); |
| 803 | jit_extr_c(r0, JIT_RET); |
| 804 | jit_dec_synth(); |
| 805 | } |
| 806 | |
| 807 | void |
| 808 | _jit_retval_uc(jit_state_t *_jit, jit_int32_t r0) |
| 809 | { |
| 810 | jit_inc_synth_w(retval_uc, r0); |
| 811 | jit_extr_uc(r0, JIT_RET); |
| 812 | jit_dec_synth(); |
| 813 | } |
| 814 | |
| 815 | void |
| 816 | _jit_retval_s(jit_state_t *_jit, jit_int32_t r0) |
| 817 | { |
| 818 | jit_inc_synth_w(retval_s, r0); |
| 819 | jit_extr_s(r0, JIT_RET); |
| 820 | jit_dec_synth(); |
| 821 | } |
| 822 | |
| 823 | void |
| 824 | _jit_retval_us(jit_state_t *_jit, jit_int32_t r0) |
| 825 | { |
| 826 | jit_inc_synth_w(retval_us, r0); |
| 827 | jit_extr_us(r0, JIT_RET); |
| 828 | jit_dec_synth(); |
| 829 | } |
| 830 | |
| 831 | void |
| 832 | _jit_retval_i(jit_state_t *_jit, jit_int32_t r0) |
| 833 | { |
| 834 | jit_inc_synth_w(retval_i, r0); |
| 835 | jit_movr(r0, JIT_RET); |
| 836 | jit_dec_synth(); |
| 837 | } |
| 838 | |
| 839 | void |
| 840 | _jit_retval_f(jit_state_t *_jit, jit_int32_t r0) |
| 841 | { |
| 842 | jit_inc_synth_w(retval_f, r0); |
| 843 | jit_movr_f(r0, JIT_FRET); |
| 844 | jit_dec_synth(); |
| 845 | } |
| 846 | |
| 847 | void |
| 848 | _jit_retval_d(jit_state_t *_jit, jit_int32_t r0) |
| 849 | { |
| 850 | jit_inc_synth_w(retval_d, r0); |
| 851 | jit_movr_d(r0, JIT_FRET); |
| 852 | jit_dec_synth(); |
| 853 | } |
| 854 | |
| 855 | jit_pointer_t |
| 856 | _emit_code(jit_state_t *_jit) |
| 857 | { |
| 858 | jit_node_t *node; |
| 859 | jit_node_t *temp; |
| 860 | jit_word_t word; |
| 861 | jit_int32_t value; |
| 862 | jit_int32_t offset; |
| 863 | struct { |
| 864 | jit_node_t *node; |
| 865 | jit_word_t word; |
| 866 | jit_function_t func; |
| 867 | #if DEVEL_DISASSEMBLER |
| 868 | jit_word_t prevw; |
| 869 | #endif |
| 870 | jit_int32_t patch_offset; |
| 871 | } undo; |
| 872 | #if DEVEL_DISASSEMBLER |
| 873 | jit_word_t prevw; |
| 874 | #endif |
| 875 | |
| 876 | _jitc->function = NULL; |
| 877 | |
| 878 | jit_reglive_setup(); |
| 879 | |
| 880 | undo.word = 0; |
| 881 | undo.node = NULL; |
| 882 | undo.patch_offset = 0; |
| 883 | |
| 884 | #define case_rr(name, type) \ |
| 885 | case jit_code_##name##r##type: \ |
| 886 | name##r##type(rn(node->u.w), rn(node->v.w)); \ |
| 887 | break |
| 888 | #define case_rw(name, type) \ |
| 889 | case jit_code_##name##i##type: \ |
| 890 | name##i##type(rn(node->u.w), node->v.w); \ |
| 891 | break |
| 892 | #define case_wr(name, type) \ |
| 893 | case jit_code_##name##i##type: \ |
| 894 | name##i##type(node->u.w, rn(node->v.w)); \ |
| 895 | break |
| 896 | #define case_rrr(name, type) \ |
| 897 | case jit_code_##name##r##type: \ |
| 898 | name##r##type(rn(node->u.w), \ |
| 899 | rn(node->v.w), rn(node->w.w)); \ |
| 900 | break |
| 901 | #define case_rrrr(name, type) \ |
| 902 | case jit_code_##name##r##type: \ |
| 903 | name##r##type(rn(node->u.q.l), rn(node->u.q.h), \ |
| 904 | rn(node->v.w), rn(node->w.w)); \ |
| 905 | break |
| 906 | #define case_rrw(name, type) \ |
| 907 | case jit_code_##name##i##type: \ |
| 908 | name##i##type(rn(node->u.w),rn(node->v.w), node->w.w); \ |
| 909 | break |
| 910 | #define case_rrrw(name, type) \ |
| 911 | case jit_code_##name##i##type: \ |
| 912 | name##i##type(rn(node->u.q.l), rn(node->u.q.h), \ |
| 913 | rn(node->v.w), node->w.w); \ |
| 914 | break |
| 915 | #define case_rrf(name, type, size) \ |
| 916 | case jit_code_##name##i##type: \ |
| 917 | assert(node->flag & jit_flag_data); \ |
| 918 | name##i##type(rn(node->u.w), rn(node->v.w), \ |
| 919 | (jit_float##size##_t *)node->w.n->u.w); \ |
| 920 | break |
| 921 | #define case_wrr(name, type) \ |
| 922 | case jit_code_##name##i##type: \ |
| 923 | name##i##type(node->u.w,rn(node->v.w), rn(node->w.w)); \ |
| 924 | break |
| 925 | #define case_brr(name, type) \ |
| 926 | case jit_code_##name##r##type: \ |
| 927 | temp = node->u.n; \ |
| 928 | assert(temp->code == jit_code_label || \ |
| 929 | temp->code == jit_code_epilog); \ |
| 930 | if (temp->flag & jit_flag_patch) \ |
| 931 | name##r##type(temp->u.w, rn(node->v.w), \ |
| 932 | rn(node->w.w)); \ |
| 933 | else { \ |
| 934 | word = name##r##type(_jit->pc.w, \ |
| 935 | rn(node->v.w), rn(node->w.w)); \ |
| 936 | patch(word, node); \ |
| 937 | } \ |
| 938 | break |
| 939 | #define case_brw(name, type) \ |
| 940 | case jit_code_##name##i##type: \ |
| 941 | temp = node->u.n; \ |
| 942 | assert(temp->code == jit_code_label || \ |
| 943 | temp->code == jit_code_epilog); \ |
| 944 | if (temp->flag & jit_flag_patch) \ |
| 945 | name##i##type(temp->u.w, \ |
| 946 | rn(node->v.w), node->w.w); \ |
| 947 | else { \ |
| 948 | word = name##i##type(_jit->pc.w, \ |
| 949 | rn(node->v.w), node->w.w); \ |
| 950 | patch(word, node); \ |
| 951 | } \ |
| 952 | break |
| 953 | #define case_brf(name, type, size) \ |
| 954 | case jit_code_##name##i##type: \ |
| 955 | temp = node->u.n; \ |
| 956 | assert(temp->code == jit_code_label || \ |
| 957 | temp->code == jit_code_epilog); \ |
| 958 | if (temp->flag & jit_flag_patch) \ |
| 959 | name##i##type(temp->u.w, rn(node->v.w), \ |
| 960 | (jit_float##size##_t *)node->w.n->u.w); \ |
| 961 | else { \ |
| 962 | word = name##i##type(_jit->pc.w, rn(node->v.w), \ |
| 963 | (jit_float##size##_t *)node->w.n->u.w); \ |
| 964 | patch(word, node); \ |
| 965 | } \ |
| 966 | break |
| 967 | #if DEVEL_DISASSEMBLER |
| 968 | prevw = _jit->pc.w; |
| 969 | #endif |
| 970 | for (node = _jitc->head; node; node = node->next) { |
| 971 | if (_jit->pc.uc >= _jitc->code.end) |
| 972 | return (NULL); |
| 973 | |
| 974 | #if DEVEL_DISASSEMBLER |
| 975 | node->offset = (jit_uword_t)_jit->pc.w - (jit_uword_t)prevw; |
| 976 | prevw = _jit->pc.w; |
| 977 | #endif |
| 978 | value = jit_classify(node->code); |
| 979 | jit_regarg_set(node, value); |
| 980 | switch (node->code) { |
| 981 | case jit_code_align: |
| 982 | /* Must align to a power of two */ |
| 983 | assert(!(node->u.w & (node->u.w - 1))); |
| 984 | if ((word = _jit->pc.w & (node->u.w - 1))) |
| 985 | nop(node->u.w - word); |
| 986 | break; |
| 987 | case jit_code_skip: |
| 988 | nop((node->u.w + 3) & ~3); |
| 989 | break; |
| 990 | case jit_code_note: case jit_code_name: |
| 991 | node->u.w = _jit->pc.w; |
| 992 | break; |
| 993 | case jit_code_label: |
| 994 | /* remember label is defined */ |
| 995 | node->flag |= jit_flag_patch; |
| 996 | node->u.w = _jit->pc.w; |
| 997 | break; |
| 998 | case_rrr(add,); |
| 999 | case_rrw(add,); |
| 1000 | case_rrr(addc,); |
| 1001 | case_rrw(addc,); |
| 1002 | case_rrr(addx,); |
| 1003 | case_rrw(addx,); |
| 1004 | case_rrr(sub,); |
| 1005 | case_rrw(sub,); |
| 1006 | case_rrr(subc,); |
| 1007 | case_rrw(subc,); |
| 1008 | case_rrr(subx,); |
| 1009 | case_rrw(subx,); |
| 1010 | case_rrw(rsb,); |
| 1011 | case_rrr(mul,); |
| 1012 | case_rrw(mul,); |
| 1013 | case_rrrr(qmul,); |
| 1014 | case_rrrw(qmul,); |
| 1015 | case_rrrr(qmul, _u); |
| 1016 | case_rrrw(qmul, _u); |
| 1017 | case_rrr(div,); |
| 1018 | case_rrw(div,); |
| 1019 | case_rrr(div, _u); |
| 1020 | case_rrw(div, _u); |
| 1021 | case_rrr(rem,); |
| 1022 | case_rrw(rem,); |
| 1023 | case_rrr(rem, _u); |
| 1024 | case_rrw(rem, _u); |
| 1025 | case_rrrr(qdiv,); |
| 1026 | case_rrrw(qdiv,); |
| 1027 | case_rrrr(qdiv, _u); |
| 1028 | case_rrrw(qdiv, _u); |
| 1029 | case_rrr(and,); |
| 1030 | case_rrw(and,); |
| 1031 | case_rrr(or,); |
| 1032 | case_rrw(or,); |
| 1033 | case_rrr(xor,); |
| 1034 | case_rrw(xor,); |
| 1035 | case_rrr(lsh,); |
| 1036 | case_rrw(lsh,); |
| 1037 | case_rrr(rsh,); |
| 1038 | case_rrw(rsh,); |
| 1039 | case_rrr(rsh, _u); |
| 1040 | case_rrw(rsh, _u); |
| 1041 | case_rrr(movn,); |
| 1042 | case_rrr(movz,); |
| 1043 | case jit_code_casr: |
| 1044 | casr(rn(node->u.w), rn(node->v.w), |
| 1045 | rn(node->w.q.l), rn(node->w.q.h)); |
| 1046 | break; |
| 1047 | case jit_code_casi: |
| 1048 | casi(rn(node->u.w), node->v.w, |
| 1049 | rn(node->w.q.l), rn(node->w.q.h)); |
| 1050 | break; |
| 1051 | case_rr(mov,); |
| 1052 | case jit_code_movi: |
| 1053 | if (node->flag & jit_flag_node) { |
| 1054 | temp = node->v.n; |
| 1055 | if (temp->code == jit_code_data || |
| 1056 | (temp->code == jit_code_label && |
| 1057 | (temp->flag & jit_flag_patch))) |
| 1058 | movi(rn(node->u.w), temp->u.w); |
| 1059 | else { |
| 1060 | assert(temp->code == jit_code_label || |
| 1061 | temp->code == jit_code_epilog); |
| 1062 | word = movi_p(rn(node->u.w), node->v.w); |
| 1063 | patch(word, node); |
| 1064 | } |
| 1065 | } |
| 1066 | else |
| 1067 | movi(rn(node->u.w), node->v.w); |
| 1068 | break; |
| 1069 | case_rr(neg,); |
| 1070 | case_rr(com,); |
| 1071 | #define clor(r0, r1) fallback_clo(r0, r1) |
| 1072 | #define clzr(r0, r1) fallback_clz(r0, r1) |
| 1073 | #define ctor(r0, r1) fallback_cto(r0, r1) |
| 1074 | #define ctzr(r0, r1) fallback_ctz(r0, r1) |
| 1075 | case_rr(clo,); |
| 1076 | case_rr(clz,); |
| 1077 | case_rr(cto,); |
| 1078 | case_rr(ctz,); |
| 1079 | case_rr(ext, _c); |
| 1080 | case_rr(ext, _uc); |
| 1081 | case_rr(ext, _s); |
| 1082 | case_rr(ext, _us); |
| 1083 | case_rr(hton, _us); |
| 1084 | case_rr(hton, _ui); |
| 1085 | case_rr(bswap, _us); |
| 1086 | case_rr(bswap, _ui); |
| 1087 | case_rrr(lt,); |
| 1088 | case_rrw(lt,); |
| 1089 | case_rrr(lt, _u); |
| 1090 | case_rrw(lt, _u); |
| 1091 | case_rrr(le,); |
| 1092 | case_rrw(le,); |
| 1093 | case_rrr(le, _u); |
| 1094 | case_rrw(le, _u); |
| 1095 | case_rrr(eq,); |
| 1096 | case_rrw(eq,); |
| 1097 | case_rrr(ge,); |
| 1098 | case_rrw(ge,); |
| 1099 | case_rrr(ge, _u); |
| 1100 | case_rrw(ge, _u); |
| 1101 | case_rrr(gt,); |
| 1102 | case_rrw(gt,); |
| 1103 | case_rrr(gt, _u); |
| 1104 | case_rrw(gt, _u); |
| 1105 | case_rrr(ne,); |
| 1106 | case_rrw(ne,); |
| 1107 | case_rr(ld, _c); |
| 1108 | case_rw(ld, _c); |
| 1109 | case_rr(ld, _uc); |
| 1110 | case_rw(ld, _uc); |
| 1111 | case_rr(ld, _s); |
| 1112 | case_rw(ld, _s); |
| 1113 | case_rr(ld, _us); |
| 1114 | case_rw(ld, _us); |
| 1115 | case_rr(ld, _i); |
| 1116 | case_rw(ld, _i); |
| 1117 | case_rrr(ldx, _c); |
| 1118 | case_rrw(ldx, _c); |
| 1119 | case_rrr(ldx, _uc); |
| 1120 | case_rrw(ldx, _uc); |
| 1121 | case_rrr(ldx, _s); |
| 1122 | case_rrw(ldx, _s); |
| 1123 | case_rrr(ldx, _us); |
| 1124 | case_rrw(ldx, _us); |
| 1125 | case_rrr(ldx, _i); |
| 1126 | case_rrw(ldx, _i); |
| 1127 | case_rr(st, _c); |
| 1128 | case_wr(st, _c); |
| 1129 | case_rr(st, _s); |
| 1130 | case_wr(st, _s); |
| 1131 | case_rr(st, _i); |
| 1132 | case_wr(st, _i); |
| 1133 | case_rrr(stx, _c); |
| 1134 | case_wrr(stx, _c); |
| 1135 | case_rrr(stx, _s); |
| 1136 | case_wrr(stx, _s); |
| 1137 | case_rrr(stx, _i); |
| 1138 | case_wrr(stx, _i); |
| 1139 | case_brr(blt,); |
| 1140 | case_brw(blt,); |
| 1141 | case_brr(blt, _u); |
| 1142 | case_brw(blt, _u); |
| 1143 | case_brr(ble,); |
| 1144 | case_brw(ble,); |
| 1145 | case_brr(ble, _u); |
| 1146 | case_brw(ble, _u); |
| 1147 | case_brr(beq,); |
| 1148 | case_brw(beq,); |
| 1149 | case_brr(bge,); |
| 1150 | case_brw(bge,); |
| 1151 | case_brr(bge, _u); |
| 1152 | case_brw(bge, _u); |
| 1153 | case_brr(bgt,); |
| 1154 | case_brw(bgt,); |
| 1155 | case_brr(bgt, _u); |
| 1156 | case_brw(bgt, _u); |
| 1157 | case_brr(bne,); |
| 1158 | case_brw(bne,); |
| 1159 | case_brr(bms,); |
| 1160 | case_brw(bms,); |
| 1161 | case_brr(bmc,); |
| 1162 | case_brw(bmc,); |
| 1163 | case_brr(boadd,); |
| 1164 | case_brw(boadd,); |
| 1165 | case_brr(boadd, _u); |
| 1166 | case_brw(boadd, _u); |
| 1167 | case_brr(bxadd,); |
| 1168 | case_brw(bxadd,); |
| 1169 | case_brr(bxadd, _u); |
| 1170 | case_brw(bxadd, _u); |
| 1171 | case_brr(bosub,); |
| 1172 | case_brw(bosub,); |
| 1173 | case_brr(bosub, _u); |
| 1174 | case_brw(bosub, _u); |
| 1175 | case_brr(bxsub,); |
| 1176 | case_brw(bxsub,); |
| 1177 | case_brr(bxsub, _u); |
| 1178 | case_brw(bxsub, _u); |
| 1179 | case_rr(mov, _f); |
| 1180 | case jit_code_movi_f: |
| 1181 | assert(node->flag & jit_flag_data); |
| 1182 | movi_f(rn(node->u.w), (jit_float32_t *)node->v.n->u.w); |
| 1183 | break; |
| 1184 | case_rr(mov, _d); |
| 1185 | case jit_code_movi_d: |
| 1186 | assert(node->flag & jit_flag_data); |
| 1187 | movi_d(rn(node->u.w), (jit_float64_t *)node->v.n->u.w); |
| 1188 | break; |
| 1189 | case_rr(trunc, _f_i); |
| 1190 | case_rr(trunc, _d_i); |
| 1191 | case_rr(ext, _f); |
| 1192 | case_rr(ext, _d); |
| 1193 | case_rr(ext, _d_f); |
| 1194 | case_rr(ext, _f_d); |
| 1195 | case_rr(abs, _f); |
| 1196 | case_rr(abs, _d); |
| 1197 | case_rr(neg, _f); |
| 1198 | case_rr(neg, _d); |
| 1199 | case_rr(sqrt, _f); |
| 1200 | case_rr(sqrt, _d); |
| 1201 | case_rrr(add, _f); |
| 1202 | case_rrf(add, _f, 32); |
| 1203 | case_rrr(add, _d); |
| 1204 | case_rrf(add, _d, 64); |
| 1205 | case_rrr(sub, _f); |
| 1206 | case_rrf(sub, _f, 32); |
| 1207 | case_rrf(rsb, _f, 32); |
| 1208 | case_rrr(sub, _d); |
| 1209 | case_rrf(sub, _d, 64); |
| 1210 | case_rrf(rsb, _d, 64); |
| 1211 | case_rrr(mul, _f); |
| 1212 | case_rrf(mul, _f, 32); |
| 1213 | case_rrr(mul, _d); |
| 1214 | case_rrf(mul, _d, 64); |
| 1215 | case_rrr(div, _f); |
| 1216 | case_rrf(div, _f, 32); |
| 1217 | case_rrr(div, _d); |
| 1218 | case_rrf(div, _d, 64); |
| 1219 | case_rrr(lt, _f); |
| 1220 | case_rrf(lt, _f, 32); |
| 1221 | case_rrr(lt, _d); |
| 1222 | case_rrf(lt, _d, 64); |
| 1223 | case_rrr(le, _f); |
| 1224 | case_rrf(le, _f, 32); |
| 1225 | case_rrr(le, _d); |
| 1226 | case_rrf(le, _d, 64); |
| 1227 | case_rrr(eq, _f); |
| 1228 | case_rrf(eq, _f, 32); |
| 1229 | case_rrr(eq, _d); |
| 1230 | case_rrf(eq, _d, 64); |
| 1231 | case_rrr(ge, _f); |
| 1232 | case_rrf(ge, _f, 32); |
| 1233 | case_rrr(ge, _d); |
| 1234 | case_rrf(ge, _d, 64); |
| 1235 | case_rrr(gt, _f); |
| 1236 | case_rrf(gt, _f, 32); |
| 1237 | case_rrr(gt, _d); |
| 1238 | case_rrf(gt, _d, 64); |
| 1239 | case_rrr(ne, _f); |
| 1240 | case_rrf(ne, _f, 32); |
| 1241 | case_rrr(ne, _d); |
| 1242 | case_rrf(ne, _d, 64); |
| 1243 | case_rrr(unlt, _f); |
| 1244 | case_rrf(unlt, _f, 32); |
| 1245 | case_rrr(unlt, _d); |
| 1246 | case_rrf(unlt, _d, 64); |
| 1247 | case_rrr(unle, _f); |
| 1248 | case_rrf(unle, _f, 32); |
| 1249 | case_rrr(unle, _d); |
| 1250 | case_rrf(unle, _d, 64); |
| 1251 | case_rrr(uneq, _f); |
| 1252 | case_rrf(uneq, _f, 32); |
| 1253 | case_rrr(uneq, _d); |
| 1254 | case_rrf(uneq, _d, 64); |
| 1255 | case_rrr(unge, _f); |
| 1256 | case_rrf(unge, _f, 32); |
| 1257 | case_rrr(unge, _d); |
| 1258 | case_rrf(unge, _d, 64); |
| 1259 | case_rrr(ungt, _f); |
| 1260 | case_rrf(ungt, _f, 32); |
| 1261 | case_rrr(ungt, _d); |
| 1262 | case_rrf(ungt, _d, 64); |
| 1263 | case_rrr(ltgt, _f); |
| 1264 | case_rrf(ltgt, _f, 32); |
| 1265 | case_rrr(ltgt, _d); |
| 1266 | case_rrf(ltgt, _d, 64); |
| 1267 | case_rrr(ord, _f); |
| 1268 | case_rrf(ord, _f, 32); |
| 1269 | case_rrr(ord, _d); |
| 1270 | case_rrf(ord, _d, 64); |
| 1271 | case_rrr(unord, _f); |
| 1272 | case_rrf(unord, _f, 32); |
| 1273 | case_rrr(unord, _d); |
| 1274 | case_rrf(unord, _d, 64); |
| 1275 | case_rr(ld, _f); |
| 1276 | case_rw(ld, _f); |
| 1277 | case_rr(ld, _d); |
| 1278 | case_rw(ld, _d); |
| 1279 | case_rrr(ldx, _f); |
| 1280 | case_rrw(ldx, _f); |
| 1281 | case_rrr(ldx, _d); |
| 1282 | case_rrw(ldx, _d); |
| 1283 | case_rr(st, _f); |
| 1284 | case_wr(st, _f); |
| 1285 | case_rr(st, _d); |
| 1286 | case_wr(st, _d); |
| 1287 | case_rrr(stx, _f); |
| 1288 | case_wrr(stx, _f); |
| 1289 | case_rrr(stx, _d); |
| 1290 | case_wrr(stx, _d); |
| 1291 | case_brr(blt, _f); |
| 1292 | case_brf(blt, _f, 32); |
| 1293 | case_brr(blt, _d); |
| 1294 | case_brf(blt, _d, 64); |
| 1295 | case_brr(ble, _f); |
| 1296 | case_brf(ble, _f, 32); |
| 1297 | case_brr(ble, _d); |
| 1298 | case_brf(ble, _d, 64); |
| 1299 | case_brr(beq, _f); |
| 1300 | case_brf(beq, _f, 32); |
| 1301 | case_brr(beq, _d); |
| 1302 | case_brf(beq, _d, 64); |
| 1303 | case_brr(bge, _f); |
| 1304 | case_brf(bge, _f, 32); |
| 1305 | case_brr(bge, _d); |
| 1306 | case_brf(bge, _d, 64); |
| 1307 | case_brr(bgt, _f); |
| 1308 | case_brf(bgt, _f, 32); |
| 1309 | case_brr(bgt, _d); |
| 1310 | case_brf(bgt, _d, 64); |
| 1311 | case_brr(bne, _f); |
| 1312 | case_brf(bne, _f, 32); |
| 1313 | case_brr(bne, _d); |
| 1314 | case_brf(bne, _d, 64); |
| 1315 | case_brr(bunlt, _f); |
| 1316 | case_brf(bunlt, _f, 32); |
| 1317 | case_brr(bunlt, _d); |
| 1318 | case_brf(bunlt, _d, 64); |
| 1319 | case_brr(bunle, _f); |
| 1320 | case_brf(bunle, _f, 32); |
| 1321 | case_brr(bunle, _d); |
| 1322 | case_brf(bunle, _d, 64); |
| 1323 | case_brr(buneq, _f); |
| 1324 | case_brf(buneq, _f, 32); |
| 1325 | case_brr(buneq, _d); |
| 1326 | case_brf(buneq, _d, 64); |
| 1327 | case_brr(bunge, _f); |
| 1328 | case_brf(bunge, _f, 32); |
| 1329 | case_brr(bunge, _d); |
| 1330 | case_brf(bunge, _d, 64); |
| 1331 | case_brr(bungt, _f); |
| 1332 | case_brf(bungt, _f, 32); |
| 1333 | case_brr(bungt, _d); |
| 1334 | case_brf(bungt, _d, 64); |
| 1335 | case_brr(bltgt, _f); |
| 1336 | case_brf(bltgt, _f, 32); |
| 1337 | case_brr(bltgt, _d); |
| 1338 | case_brf(bltgt, _d, 64); |
| 1339 | case_brr(bord, _f); |
| 1340 | case_brf(bord, _f, 32); |
| 1341 | case_brr(bord, _d); |
| 1342 | case_brf(bord, _d, 64); |
| 1343 | case_brr(bunord, _f); |
| 1344 | case_brf(bunord, _f, 32); |
| 1345 | case_brr(bunord, _d); |
| 1346 | case_brf(bunord, _d, 64); |
| 1347 | case jit_code_jmpr: |
| 1348 | jmpr(rn(node->u.w)); |
| 1349 | break; |
| 1350 | case jit_code_jmpi: |
| 1351 | if (node->flag & jit_flag_node) { |
| 1352 | temp = node->u.n; |
| 1353 | assert(temp->code == jit_code_label || |
| 1354 | temp->code == jit_code_epilog); |
| 1355 | if (temp->flag & jit_flag_patch) |
| 1356 | jmpi(temp->u.w); |
| 1357 | else { |
| 1358 | word = _jit->code.length - |
| 1359 | (_jit->pc.uc - _jit->code.ptr); |
| 1360 | if (word >= -32768 && word <= 32767) |
| 1361 | word = jmpi(_jit->pc.w); |
| 1362 | else |
| 1363 | word = jmpi_p(_jit->pc.w); |
| 1364 | patch(word, node); |
| 1365 | } |
| 1366 | } |
| 1367 | else |
| 1368 | jmpi(node->u.w); |
| 1369 | break; |
| 1370 | case jit_code_callr: |
| 1371 | callr(rn(node->u.w)); |
| 1372 | break; |
| 1373 | case jit_code_calli: |
| 1374 | if (node->flag & jit_flag_node) { |
| 1375 | temp = node->u.n; |
| 1376 | assert(temp->code == jit_code_label || |
| 1377 | temp->code == jit_code_epilog); |
| 1378 | if (!(temp->flag & jit_flag_patch)) { |
| 1379 | word = calli_p(temp->u.w); |
| 1380 | patch(word, node); |
| 1381 | } |
| 1382 | else |
| 1383 | calli(temp->u.w); |
| 1384 | } |
| 1385 | else |
| 1386 | calli(node->u.w); |
| 1387 | break; |
| 1388 | case jit_code_prolog: |
| 1389 | _jitc->function = _jitc->functions.ptr + node->w.w; |
| 1390 | undo.node = node; |
| 1391 | undo.word = _jit->pc.w; |
| 1392 | memcpy(&undo.func, _jitc->function, sizeof(undo.func)); |
| 1393 | #if DEVEL_DISASSEMBLER |
| 1394 | undo.prevw = prevw; |
| 1395 | #endif |
| 1396 | undo.patch_offset = _jitc->patches.offset; |
| 1397 | restart_function: |
| 1398 | _jitc->again = 0; |
| 1399 | prolog(node); |
| 1400 | break; |
| 1401 | case jit_code_epilog: |
| 1402 | assert(_jitc->function == _jitc->functions.ptr + node->w.w); |
| 1403 | if (_jitc->again) { |
| 1404 | for (temp = undo.node->next; |
| 1405 | temp != node; temp = temp->next) { |
| 1406 | if (temp->code == jit_code_label || |
| 1407 | temp->code == jit_code_epilog) |
| 1408 | temp->flag &= ~jit_flag_patch; |
| 1409 | } |
| 1410 | temp->flag &= ~jit_flag_patch; |
| 1411 | node = undo.node; |
| 1412 | _jit->pc.w = undo.word; |
| 1413 | /* undo.func.self.aoff and undo.func.regset should not |
| 1414 | * be undone, as they will be further updated, and are |
| 1415 | * the reason of the undo. |
| 1416 | * Note that for hppa use '-' instead of '+' as hppa |
| 1417 | * stack grows up */ |
| 1418 | undo.func.self.aoff = _jitc->function->frame - |
| 1419 | _jitc->function->self.aoff; |
| 1420 | jit_regset_set(&undo.func.regset, &_jitc->function->regset); |
| 1421 | /* allocar information also does not need to be undone */ |
| 1422 | undo.func.aoffoff = _jitc->function->aoffoff; |
| 1423 | undo.func.allocar = _jitc->function->allocar; |
| 1424 | memcpy(_jitc->function, &undo.func, sizeof(undo.func)); |
| 1425 | #if DEVEL_DISASSEMBLER |
| 1426 | prevw = undo.prevw; |
| 1427 | #endif |
| 1428 | _jitc->patches.offset = undo.patch_offset; |
| 1429 | goto restart_function; |
| 1430 | } |
| 1431 | /* remember label is defined */ |
| 1432 | node->flag |= jit_flag_patch; |
| 1433 | node->u.w = _jit->pc.w; |
| 1434 | epilog(node); |
| 1435 | _jitc->function = NULL; |
| 1436 | break; |
| 1437 | case jit_code_va_start: |
| 1438 | vastart(rn(node->u.w)); |
| 1439 | break; |
| 1440 | case jit_code_va_arg: |
| 1441 | vaarg(rn(node->u.w), rn(node->v.w)); |
| 1442 | break; |
| 1443 | case jit_code_va_arg_d: |
| 1444 | vaarg_d(rn(node->u.w), rn(node->v.w)); |
| 1445 | break; |
| 1446 | case jit_code_live: case jit_code_ellipsis: |
| 1447 | case jit_code_va_push: |
| 1448 | case jit_code_allocai: case jit_code_allocar: |
| 1449 | case jit_code_arg_c: case jit_code_arg_s: |
| 1450 | case jit_code_arg_i: |
| 1451 | case jit_code_arg_f: case jit_code_arg_d: |
| 1452 | case jit_code_va_end: |
| 1453 | case jit_code_ret: |
| 1454 | case jit_code_retr_c: case jit_code_reti_c: |
| 1455 | case jit_code_retr_uc: case jit_code_reti_uc: |
| 1456 | case jit_code_retr_s: case jit_code_reti_s: |
| 1457 | case jit_code_retr_us: case jit_code_reti_us: |
| 1458 | case jit_code_retr_i: case jit_code_reti_i: |
| 1459 | case jit_code_retr_f: case jit_code_reti_f: |
| 1460 | case jit_code_retr_d: case jit_code_reti_d: |
| 1461 | case jit_code_getarg_c: case jit_code_getarg_uc: |
| 1462 | case jit_code_getarg_s: case jit_code_getarg_us: |
| 1463 | case jit_code_getarg_i: |
| 1464 | case jit_code_getarg_f: case jit_code_getarg_d: |
| 1465 | case jit_code_putargr_c: case jit_code_putargi_c: |
| 1466 | case jit_code_putargr_uc: case jit_code_putargi_uc: |
| 1467 | case jit_code_putargr_s: case jit_code_putargi_s: |
| 1468 | case jit_code_putargr_us: case jit_code_putargi_us: |
| 1469 | case jit_code_putargr_i: case jit_code_putargi_i: |
| 1470 | case jit_code_putargr_f: case jit_code_putargi_f: |
| 1471 | case jit_code_putargr_d: case jit_code_putargi_d: |
| 1472 | case jit_code_pushargr_c: case jit_code_pushargi_c: |
| 1473 | case jit_code_pushargr_uc: case jit_code_pushargi_uc: |
| 1474 | case jit_code_pushargr_s: case jit_code_pushargi_s: |
| 1475 | case jit_code_pushargr_us: case jit_code_pushargi_us: |
| 1476 | case jit_code_pushargr_i: case jit_code_pushargi_i: |
| 1477 | case jit_code_pushargr_f: case jit_code_pushargi_f: |
| 1478 | case jit_code_pushargr_d: case jit_code_pushargi_d: |
| 1479 | case jit_code_retval_c: case jit_code_retval_uc: |
| 1480 | case jit_code_retval_s: case jit_code_retval_us: |
| 1481 | case jit_code_retval_i: |
| 1482 | case jit_code_retval_f: case jit_code_retval_d: |
| 1483 | case jit_code_prepare: |
| 1484 | case jit_code_finishr: case jit_code_finishi: |
| 1485 | break; |
| 1486 | default: |
| 1487 | abort(); |
| 1488 | } |
| 1489 | jit_regarg_clr(node, value); |
| 1490 | assert(_jitc->regarg == 0 && _jitc->synth == 0); |
| 1491 | /* update register live state */ |
| 1492 | jit_reglive(node); |
| 1493 | } |
| 1494 | #undef case_brf |
| 1495 | #undef case_brw |
| 1496 | #undef case_brr |
| 1497 | #undef case_wrr |
| 1498 | #undef case_rrf |
| 1499 | #undef case_rrrw |
| 1500 | #undef case_rrw |
| 1501 | #undef case_rrrr |
| 1502 | #undef case_rrr |
| 1503 | #undef case_wr |
| 1504 | #undef case_rw |
| 1505 | #undef case_rr |
| 1506 | |
| 1507 | for (offset = 0; offset < _jitc->patches.offset; offset++) { |
| 1508 | node = _jitc->patches.ptr[offset].node; |
| 1509 | word = node->code == jit_code_movi ? node->v.n->u.w : node->u.n->u.w; |
| 1510 | patch_at(_jitc->patches.ptr[offset].inst, word); |
| 1511 | } |
| 1512 | |
| 1513 | jit_flush(_jit->code.ptr, _jit->pc.uc); |
| 1514 | |
| 1515 | return (_jit->code.ptr); |
| 1516 | } |
| 1517 | |
| 1518 | #define CODE 1 |
| 1519 | # include "jit_hppa-cpu.c" |
| 1520 | # include "jit_hppa-fpu.c" |
| 1521 | # include "jit_fallback.c" |
| 1522 | #undef CODE |
| 1523 | |
| 1524 | void |
| 1525 | jit_flush(void *fptr, void *tptr) |
| 1526 | { |
| 1527 | jit_word_t f, t, s; |
| 1528 | s = sysconf(_SC_PAGE_SIZE); |
| 1529 | f = (jit_word_t)fptr & -s; |
| 1530 | t = (((jit_word_t)tptr) + s - 1) & -s; |
| 1531 | #if defined(__hppa) |
| 1532 | /* --- parisc2.0.pdf --- |
| 1533 | Programming Note |
| 1534 | |
| 1535 | The minimum spacing that is guaranteed to work for "self-modifying code" is |
| 1536 | shown in the code segment below. Since instruction prefetching is permitted, |
| 1537 | any data cache flushes must be separated from any instruction cache flushes |
| 1538 | by a SYNC. This will ensure that the "new" instruction will be written to |
| 1539 | memory prior to any attempts at prefetching it as an instruction. |
| 1540 | |
| 1541 | LDIL l%newinstr,rnew |
| 1542 | LDW r%newinstr(0,rnew),temp |
| 1543 | LDIL l%instr,rinstr |
| 1544 | STW temp,r%instr(0,rinstr) |
| 1545 | FDC r%instr(0,rinstr) |
| 1546 | SYNC |
| 1547 | FIC r%instr(rinstr) |
| 1548 | SYNC |
| 1549 | instr ... |
| 1550 | (at least seven instructions) |
| 1551 | |
| 1552 | This sequence assumes a uniprocessor system. In a multiprocessor system, |
| 1553 | software must ensure no processor is executing code which is in the process |
| 1554 | of being modified. |
| 1555 | */ |
| 1556 | |
| 1557 | /* |
| 1558 | Adapted from ffcall/trampoline/cache-hppa.c:__TR_clear_cache to |
| 1559 | loop over addresses as it is unlikely from and to addresses would fit in |
| 1560 | at most two cachelines. |
| 1561 | FIXME A cache line can be 16, 32, or 64 bytes. |
| 1562 | */ |
| 1563 | /* |
| 1564 | * Copyright 1995-1997 Bruno Haible, <bruno@clisp.org> |
| 1565 | * |
| 1566 | * This is free software distributed under the GNU General Public Licence |
| 1567 | * described in the file COPYING. Contact the author if you don't have this |
| 1568 | * or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied, |
| 1569 | * on this software. |
| 1570 | */ |
| 1571 | { |
| 1572 | jit_word_t n = f + 32; |
| 1573 | register int u, v; |
| 1574 | for (; f <= t; n = f + 32, f += 64) { |
| 1575 | asm volatile ("fdc 0(0,%0)" |
| 1576 | "\n\t" "fdc 0(0,%1)" |
| 1577 | "\n\t" "sync" |
| 1578 | : |
| 1579 | : "r" (f), "r" (n) |
| 1580 | ); |
| 1581 | asm volatile ("mfsp %%sr0,%1" |
| 1582 | "\n\t" "ldsid (0,%4),%0" |
| 1583 | "\n\t" "mtsp %0,%%sr0" |
| 1584 | "\n\t" "fic 0(%%sr0,%2)" |
| 1585 | "\n\t" "fic 0(%%sr0,%3)" |
| 1586 | "\n\t" "sync" |
| 1587 | "\n\t" "mtsp %1,%%sr0" |
| 1588 | "\n\t" "nop" |
| 1589 | "\n\t" "nop" |
| 1590 | "\n\t" "nop" |
| 1591 | "\n\t" "nop" |
| 1592 | "\n\t" "nop" |
| 1593 | "\n\t" "nop" |
| 1594 | : "=r" (u), "=r" (v) |
| 1595 | : "r" (f), "r" (n), "r" (f) |
| 1596 | ); |
| 1597 | } |
| 1598 | } |
| 1599 | #else |
| 1600 | /* This is supposed to work but appears to fail on multiprocessor systems */ |
| 1601 | __clear_cache((void *)f, (void *)t); |
| 1602 | #endif |
| 1603 | } |
| 1604 | |
| 1605 | void |
| 1606 | _emit_ldxi(jit_state_t *_jit, jit_gpr_t r0, jit_gpr_t r1, jit_word_t i0) |
| 1607 | { |
| 1608 | ldxi(rn(r0), rn(r1), i0); |
| 1609 | } |
| 1610 | |
| 1611 | void |
| 1612 | _emit_stxi(jit_state_t *_jit, jit_word_t i0, jit_gpr_t r0, jit_gpr_t r1) |
| 1613 | { |
| 1614 | stxi(i0, rn(r0), rn(r1)); |
| 1615 | } |
| 1616 | |
| 1617 | void |
| 1618 | _emit_ldxi_d(jit_state_t *_jit, jit_fpr_t r0, jit_gpr_t r1, jit_word_t i0) |
| 1619 | { |
| 1620 | ldxi_d(rn(r0), rn(r1), i0); |
| 1621 | } |
| 1622 | |
| 1623 | void |
| 1624 | _emit_stxi_d(jit_state_t *_jit, jit_word_t i0, jit_gpr_t r0, jit_fpr_t r1) |
| 1625 | { |
| 1626 | stxi_d(i0, rn(r0), rn(r1)); |
| 1627 | } |
| 1628 | |
| 1629 | static void |
| 1630 | _patch(jit_state_t *_jit, jit_word_t instr, jit_node_t *node) |
| 1631 | { |
| 1632 | jit_int32_t flag; |
| 1633 | |
| 1634 | assert(node->flag & jit_flag_node); |
| 1635 | if (node->code == jit_code_movi) |
| 1636 | flag = node->v.n->flag; |
| 1637 | else |
| 1638 | flag = node->u.n->flag; |
| 1639 | assert(!(flag & jit_flag_patch)); |
| 1640 | if (_jitc->patches.offset >= _jitc->patches.length) { |
| 1641 | jit_realloc((jit_pointer_t *)&_jitc->patches.ptr, |
| 1642 | _jitc->patches.length * sizeof(jit_patch_t), |
| 1643 | (_jitc->patches.length + 1024) * sizeof(jit_patch_t)); |
| 1644 | _jitc->patches.length += 1024; |
| 1645 | } |
| 1646 | _jitc->patches.ptr[_jitc->patches.offset].inst = instr; |
| 1647 | _jitc->patches.ptr[_jitc->patches.offset].node = node; |
| 1648 | ++_jitc->patches.offset; |
| 1649 | } |