1/* 2 * Tiny Code Generator for QEMU 3 * 4 * Copyright (c) 2021 WANG Xuerui <git@xen0n.name> 5 * 6 * Based on tcg/riscv/tcg-target.c.inc 7 * 8 * Copyright (c) 2018 SiFive, Inc 9 * Copyright (c) 2008-2009 Arnaud Patard <arnaud.patard@rtp-net.org> 10 * Copyright (c) 2009 Aurelien Jarno <aurelien@aurel32.net> 11 * Copyright (c) 2008 Fabrice Bellard 12 * 13 * Permission is hereby granted, free of charge, to any person obtaining a copy 14 * of this software and associated documentation files (the "Software"), to deal 15 * in the Software without restriction, including without limitation the rights 16 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 17 * copies of the Software, and to permit persons to whom the Software is 18 * furnished to do so, subject to the following conditions: 19 * 20 * The above copyright notice and this permission notice shall be included in 21 * all copies or substantial portions of the Software. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 28 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 29 * THE SOFTWARE. 30 */ 31 32#include "../tcg-ldst.c.inc" 33#include <asm/hwcap.h> 34 35bool use_lsx_instructions; 36 37#ifdef CONFIG_DEBUG_TCG 38static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { 39 "zero", 40 "ra", 41 "tp", 42 "sp", 43 "a0", 44 "a1", 45 "a2", 46 "a3", 47 "a4", 48 "a5", 49 "a6", 50 "a7", 51 "t0", 52 "t1", 53 "t2", 54 "t3", 55 "t4", 56 "t5", 57 "t6", 58 "t7", 59 "t8", 60 "r21", /* reserved in the LP64* ABI, hence no ABI name */ 61 "s9", 62 "s0", 63 "s1", 64 "s2", 65 "s3", 66 "s4", 67 "s5", 68 "s6", 69 "s7", 70 "s8", 71 "vr0", 72 "vr1", 73 "vr2", 74 "vr3", 75 "vr4", 76 "vr5", 77 "vr6", 78 "vr7", 79 "vr8", 80 "vr9", 81 "vr10", 82 "vr11", 83 "vr12", 84 "vr13", 85 "vr14", 86 "vr15", 87 "vr16", 88 "vr17", 89 "vr18", 90 "vr19", 91 "vr20", 92 "vr21", 93 "vr22", 94 "vr23", 95 "vr24", 96 "vr25", 97 "vr26", 98 "vr27", 99 "vr28", 100 "vr29", 101 "vr30", 102 "vr31", 103}; 104#endif 105 106static const int tcg_target_reg_alloc_order[] = { 107 /* Registers preserved across calls */ 108 /* TCG_REG_S0 reserved for TCG_AREG0 */ 109 TCG_REG_S1, 110 TCG_REG_S2, 111 TCG_REG_S3, 112 TCG_REG_S4, 113 TCG_REG_S5, 114 TCG_REG_S6, 115 TCG_REG_S7, 116 TCG_REG_S8, 117 TCG_REG_S9, 118 119 /* Registers (potentially) clobbered across calls */ 120 TCG_REG_T0, 121 TCG_REG_T1, 122 TCG_REG_T2, 123 TCG_REG_T3, 124 TCG_REG_T4, 125 TCG_REG_T5, 126 TCG_REG_T6, 127 TCG_REG_T7, 128 TCG_REG_T8, 129 130 /* Argument registers, opposite order of allocation. */ 131 TCG_REG_A7, 132 TCG_REG_A6, 133 TCG_REG_A5, 134 TCG_REG_A4, 135 TCG_REG_A3, 136 TCG_REG_A2, 137 TCG_REG_A1, 138 TCG_REG_A0, 139 140 /* Vector registers */ 141 TCG_REG_V0, TCG_REG_V1, TCG_REG_V2, TCG_REG_V3, 142 TCG_REG_V4, TCG_REG_V5, TCG_REG_V6, TCG_REG_V7, 143 TCG_REG_V8, TCG_REG_V9, TCG_REG_V10, TCG_REG_V11, 144 TCG_REG_V12, TCG_REG_V13, TCG_REG_V14, TCG_REG_V15, 145 TCG_REG_V16, TCG_REG_V17, TCG_REG_V18, TCG_REG_V19, 146 TCG_REG_V20, TCG_REG_V21, TCG_REG_V22, TCG_REG_V23, 147 /* V24 - V31 are caller-saved, and skipped. */ 148}; 149 150static const int tcg_target_call_iarg_regs[] = { 151 TCG_REG_A0, 152 TCG_REG_A1, 153 TCG_REG_A2, 154 TCG_REG_A3, 155 TCG_REG_A4, 156 TCG_REG_A5, 157 TCG_REG_A6, 158 TCG_REG_A7, 159}; 160 161static TCGReg tcg_target_call_oarg_reg(TCGCallReturnKind kind, int slot) 162{ 163 tcg_debug_assert(kind == TCG_CALL_RET_NORMAL); 164 tcg_debug_assert(slot >= 0 && slot <= 1); 165 return TCG_REG_A0 + slot; 166} 167 168#ifndef CONFIG_SOFTMMU 169#define USE_GUEST_BASE (guest_base != 0) 170#define TCG_GUEST_BASE_REG TCG_REG_S1 171#endif 172 173#define TCG_CT_CONST_ZERO 0x100 174#define TCG_CT_CONST_S12 0x200 175#define TCG_CT_CONST_S32 0x400 176#define TCG_CT_CONST_U12 0x800 177#define TCG_CT_CONST_C12 0x1000 178#define TCG_CT_CONST_WSZ 0x2000 179#define TCG_CT_CONST_VCMP 0x4000 180#define TCG_CT_CONST_VADD 0x8000 181 182#define ALL_GENERAL_REGS MAKE_64BIT_MASK(0, 32) 183#define ALL_VECTOR_REGS MAKE_64BIT_MASK(32, 32) 184 185static inline tcg_target_long sextreg(tcg_target_long val, int pos, int len) 186{ 187 return sextract64(val, pos, len); 188} 189 190/* test if a constant matches the constraint */ 191static bool tcg_target_const_match(int64_t val, TCGType type, int ct, int vece) 192{ 193 if (ct & TCG_CT_CONST) { 194 return true; 195 } 196 if ((ct & TCG_CT_CONST_ZERO) && val == 0) { 197 return true; 198 } 199 if ((ct & TCG_CT_CONST_S12) && val == sextreg(val, 0, 12)) { 200 return true; 201 } 202 if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) { 203 return true; 204 } 205 if ((ct & TCG_CT_CONST_U12) && val >= 0 && val <= 0xfff) { 206 return true; 207 } 208 if ((ct & TCG_CT_CONST_C12) && ~val >= 0 && ~val <= 0xfff) { 209 return true; 210 } 211 if ((ct & TCG_CT_CONST_WSZ) && val == (type == TCG_TYPE_I32 ? 32 : 64)) { 212 return true; 213 } 214 int64_t vec_val = sextract64(val, 0, 8 << vece); 215 if ((ct & TCG_CT_CONST_VCMP) && -0x10 <= vec_val && vec_val <= 0x1f) { 216 return true; 217 } 218 if ((ct & TCG_CT_CONST_VADD) && -0x1f <= vec_val && vec_val <= 0x1f) { 219 return true; 220 } 221 return false; 222} 223 224/* 225 * Relocations 226 */ 227 228/* 229 * Relocation records defined in LoongArch ELF psABI v1.00 is way too 230 * complicated; a whopping stack machine is needed to stuff the fields, at 231 * the very least one SOP_PUSH and one SOP_POP (of the correct format) are 232 * needed. 233 * 234 * Hence, define our own simpler relocation types. Numbers are chosen as to 235 * not collide with potential future additions to the true ELF relocation 236 * type enum. 237 */ 238 239/* Field Sk16, shifted right by 2; suitable for conditional jumps */ 240#define R_LOONGARCH_BR_SK16 256 241/* Field Sd10k16, shifted right by 2; suitable for B and BL */ 242#define R_LOONGARCH_BR_SD10K16 257 243 244static bool reloc_br_sk16(tcg_insn_unit *src_rw, const tcg_insn_unit *target) 245{ 246 const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); 247 intptr_t offset = (intptr_t)target - (intptr_t)src_rx; 248 249 tcg_debug_assert((offset & 3) == 0); 250 offset >>= 2; 251 if (offset == sextreg(offset, 0, 16)) { 252 *src_rw = deposit64(*src_rw, 10, 16, offset); 253 return true; 254 } 255 256 return false; 257} 258 259static bool reloc_br_sd10k16(tcg_insn_unit *src_rw, 260 const tcg_insn_unit *target) 261{ 262 const tcg_insn_unit *src_rx = tcg_splitwx_to_rx(src_rw); 263 intptr_t offset = (intptr_t)target - (intptr_t)src_rx; 264 265 tcg_debug_assert((offset & 3) == 0); 266 offset >>= 2; 267 if (offset == sextreg(offset, 0, 26)) { 268 *src_rw = deposit64(*src_rw, 0, 10, offset >> 16); /* slot d10 */ 269 *src_rw = deposit64(*src_rw, 10, 16, offset); /* slot k16 */ 270 return true; 271 } 272 273 return false; 274} 275 276static bool patch_reloc(tcg_insn_unit *code_ptr, int type, 277 intptr_t value, intptr_t addend) 278{ 279 tcg_debug_assert(addend == 0); 280 switch (type) { 281 case R_LOONGARCH_BR_SK16: 282 return reloc_br_sk16(code_ptr, (tcg_insn_unit *)value); 283 case R_LOONGARCH_BR_SD10K16: 284 return reloc_br_sd10k16(code_ptr, (tcg_insn_unit *)value); 285 default: 286 g_assert_not_reached(); 287 } 288} 289 290#include "tcg-insn-defs.c.inc" 291 292/* 293 * TCG intrinsics 294 */ 295 296static void tcg_out_mb(TCGContext *s, TCGArg a0) 297{ 298 /* Baseline LoongArch only has the full barrier, unfortunately. */ 299 tcg_out_opc_dbar(s, 0); 300} 301 302static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) 303{ 304 if (ret == arg) { 305 return true; 306 } 307 switch (type) { 308 case TCG_TYPE_I32: 309 case TCG_TYPE_I64: 310 /* 311 * Conventional register-register move used in LoongArch is 312 * `or dst, src, zero`. 313 */ 314 tcg_out_opc_or(s, ret, arg, TCG_REG_ZERO); 315 break; 316 default: 317 g_assert_not_reached(); 318 } 319 return true; 320} 321 322/* Loads a 32-bit immediate into rd, sign-extended. */ 323static void tcg_out_movi_i32(TCGContext *s, TCGReg rd, int32_t val) 324{ 325 tcg_target_long lo = sextreg(val, 0, 12); 326 tcg_target_long hi12 = sextreg(val, 12, 20); 327 328 /* Single-instruction cases. */ 329 if (hi12 == 0) { 330 /* val fits in uimm12: ori rd, zero, val */ 331 tcg_out_opc_ori(s, rd, TCG_REG_ZERO, val); 332 return; 333 } 334 if (hi12 == sextreg(lo, 12, 20)) { 335 /* val fits in simm12: addi.w rd, zero, val */ 336 tcg_out_opc_addi_w(s, rd, TCG_REG_ZERO, val); 337 return; 338 } 339 340 /* High bits must be set; load with lu12i.w + optional ori. */ 341 tcg_out_opc_lu12i_w(s, rd, hi12); 342 if (lo != 0) { 343 tcg_out_opc_ori(s, rd, rd, lo & 0xfff); 344 } 345} 346 347static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg rd, 348 tcg_target_long val) 349{ 350 /* 351 * LoongArch conventionally loads 64-bit immediates in at most 4 steps, 352 * with dedicated instructions for filling the respective bitfields 353 * below: 354 * 355 * 6 5 4 3 356 * 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 357 * +-----------------------+---------------------------------------+... 358 * | hi52 | hi32 | 359 * +-----------------------+---------------------------------------+... 360 * 3 2 1 361 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 362 * ...+-------------------------------------+-------------------------+ 363 * | hi12 | lo | 364 * ...+-------------------------------------+-------------------------+ 365 * 366 * Check if val belong to one of the several fast cases, before falling 367 * back to the slow path. 368 */ 369 370 intptr_t pc_offset; 371 tcg_target_long val_lo, val_hi, pc_hi, offset_hi; 372 tcg_target_long hi12, hi32, hi52; 373 374 /* Value fits in signed i32. */ 375 if (type == TCG_TYPE_I32 || val == (int32_t)val) { 376 tcg_out_movi_i32(s, rd, val); 377 return; 378 } 379 380 /* PC-relative cases. */ 381 pc_offset = tcg_pcrel_diff(s, (void *)val); 382 if (pc_offset == sextreg(pc_offset, 0, 22) && (pc_offset & 3) == 0) { 383 /* Single pcaddu2i. */ 384 tcg_out_opc_pcaddu2i(s, rd, pc_offset >> 2); 385 return; 386 } 387 388 if (pc_offset == (int32_t)pc_offset) { 389 /* Offset within 32 bits; load with pcalau12i + ori. */ 390 val_lo = sextreg(val, 0, 12); 391 val_hi = val >> 12; 392 pc_hi = (val - pc_offset) >> 12; 393 offset_hi = val_hi - pc_hi; 394 395 tcg_debug_assert(offset_hi == sextreg(offset_hi, 0, 20)); 396 tcg_out_opc_pcalau12i(s, rd, offset_hi); 397 if (val_lo != 0) { 398 tcg_out_opc_ori(s, rd, rd, val_lo & 0xfff); 399 } 400 return; 401 } 402 403 hi12 = sextreg(val, 12, 20); 404 hi32 = sextreg(val, 32, 20); 405 hi52 = sextreg(val, 52, 12); 406 407 /* Single cu52i.d case. */ 408 if ((hi52 != 0) && (ctz64(val) >= 52)) { 409 tcg_out_opc_cu52i_d(s, rd, TCG_REG_ZERO, hi52); 410 return; 411 } 412 413 /* Slow path. Initialize the low 32 bits, then concat high bits. */ 414 tcg_out_movi_i32(s, rd, val); 415 416 /* Load hi32 and hi52 explicitly when they are unexpected values. */ 417 if (hi32 != sextreg(hi12, 20, 20)) { 418 tcg_out_opc_cu32i_d(s, rd, hi32); 419 } 420 421 if (hi52 != sextreg(hi32, 20, 12)) { 422 tcg_out_opc_cu52i_d(s, rd, rd, hi52); 423 } 424} 425 426static void tcg_out_addi(TCGContext *s, TCGType type, TCGReg rd, 427 TCGReg rs, tcg_target_long imm) 428{ 429 tcg_target_long lo12 = sextreg(imm, 0, 12); 430 tcg_target_long hi16 = sextreg(imm - lo12, 16, 16); 431 432 /* 433 * Note that there's a hole in between hi16 and lo12: 434 * 435 * 3 2 1 0 436 * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 437 * ...+-------------------------------+-------+-----------------------+ 438 * | hi16 | | lo12 | 439 * ...+-------------------------------+-------+-----------------------+ 440 * 441 * For bits within that hole, it's more efficient to use LU12I and ADD. 442 */ 443 if (imm == (hi16 << 16) + lo12) { 444 if (hi16) { 445 tcg_out_opc_addu16i_d(s, rd, rs, hi16); 446 rs = rd; 447 } 448 if (type == TCG_TYPE_I32) { 449 tcg_out_opc_addi_w(s, rd, rs, lo12); 450 } else if (lo12) { 451 tcg_out_opc_addi_d(s, rd, rs, lo12); 452 } else { 453 tcg_out_mov(s, type, rd, rs); 454 } 455 } else { 456 tcg_out_movi(s, type, TCG_REG_TMP0, imm); 457 if (type == TCG_TYPE_I32) { 458 tcg_out_opc_add_w(s, rd, rs, TCG_REG_TMP0); 459 } else { 460 tcg_out_opc_add_d(s, rd, rs, TCG_REG_TMP0); 461 } 462 } 463} 464 465static bool tcg_out_xchg(TCGContext *s, TCGType type, TCGReg r1, TCGReg r2) 466{ 467 return false; 468} 469 470static void tcg_out_addi_ptr(TCGContext *s, TCGReg rd, TCGReg rs, 471 tcg_target_long imm) 472{ 473 /* This function is only used for passing structs by reference. */ 474 g_assert_not_reached(); 475} 476 477static void tcg_out_ext8u(TCGContext *s, TCGReg ret, TCGReg arg) 478{ 479 tcg_out_opc_andi(s, ret, arg, 0xff); 480} 481 482static void tcg_out_ext16u(TCGContext *s, TCGReg ret, TCGReg arg) 483{ 484 tcg_out_opc_bstrpick_w(s, ret, arg, 0, 15); 485} 486 487static void tcg_out_ext32u(TCGContext *s, TCGReg ret, TCGReg arg) 488{ 489 tcg_out_opc_bstrpick_d(s, ret, arg, 0, 31); 490} 491 492static void tcg_out_ext8s(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) 493{ 494 tcg_out_opc_sext_b(s, ret, arg); 495} 496 497static void tcg_out_ext16s(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) 498{ 499 tcg_out_opc_sext_h(s, ret, arg); 500} 501 502static void tcg_out_ext32s(TCGContext *s, TCGReg ret, TCGReg arg) 503{ 504 tcg_out_opc_addi_w(s, ret, arg, 0); 505} 506 507static void tcg_out_exts_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg) 508{ 509 if (ret != arg) { 510 tcg_out_ext32s(s, ret, arg); 511 } 512} 513 514static void tcg_out_extu_i32_i64(TCGContext *s, TCGReg ret, TCGReg arg) 515{ 516 tcg_out_ext32u(s, ret, arg); 517} 518 519static void tcg_out_extrl_i64_i32(TCGContext *s, TCGReg ret, TCGReg arg) 520{ 521 tcg_out_ext32s(s, ret, arg); 522} 523 524static void tcg_out_clzctz(TCGContext *s, LoongArchInsn opc, 525 TCGReg a0, TCGReg a1, TCGReg a2, 526 bool c2, bool is_32bit) 527{ 528 if (c2) { 529 /* 530 * Fast path: semantics already satisfied due to constraint and 531 * insn behavior, single instruction is enough. 532 */ 533 tcg_debug_assert(a2 == (is_32bit ? 32 : 64)); 534 /* all clz/ctz insns belong to DJ-format */ 535 tcg_out32(s, encode_dj_insn(opc, a0, a1)); 536 return; 537 } 538 539 tcg_out32(s, encode_dj_insn(opc, TCG_REG_TMP0, a1)); 540 /* a0 = a1 ? REG_TMP0 : a2 */ 541 tcg_out_opc_maskeqz(s, TCG_REG_TMP0, TCG_REG_TMP0, a1); 542 tcg_out_opc_masknez(s, a0, a2, a1); 543 tcg_out_opc_or(s, a0, TCG_REG_TMP0, a0); 544} 545 546#define SETCOND_INV TCG_TARGET_NB_REGS 547#define SETCOND_NEZ (SETCOND_INV << 1) 548#define SETCOND_FLAGS (SETCOND_INV | SETCOND_NEZ) 549 550static int tcg_out_setcond_int(TCGContext *s, TCGCond cond, TCGReg ret, 551 TCGReg arg1, tcg_target_long arg2, bool c2) 552{ 553 int flags = 0; 554 555 switch (cond) { 556 case TCG_COND_EQ: /* -> NE */ 557 case TCG_COND_GE: /* -> LT */ 558 case TCG_COND_GEU: /* -> LTU */ 559 case TCG_COND_GT: /* -> LE */ 560 case TCG_COND_GTU: /* -> LEU */ 561 cond = tcg_invert_cond(cond); 562 flags ^= SETCOND_INV; 563 break; 564 default: 565 break; 566 } 567 568 switch (cond) { 569 case TCG_COND_LE: 570 case TCG_COND_LEU: 571 /* 572 * If we have a constant input, the most efficient way to implement 573 * LE is by adding 1 and using LT. Watch out for wrap around for LEU. 574 * We don't need to care for this for LE because the constant input 575 * is still constrained to int32_t, and INT32_MAX+1 is representable 576 * in the 64-bit temporary register. 577 */ 578 if (c2) { 579 if (cond == TCG_COND_LEU) { 580 /* unsigned <= -1 is true */ 581 if (arg2 == -1) { 582 tcg_out_movi(s, TCG_TYPE_REG, ret, !(flags & SETCOND_INV)); 583 return ret; 584 } 585 cond = TCG_COND_LTU; 586 } else { 587 cond = TCG_COND_LT; 588 } 589 arg2 += 1; 590 } else { 591 TCGReg tmp = arg2; 592 arg2 = arg1; 593 arg1 = tmp; 594 cond = tcg_swap_cond(cond); /* LE -> GE */ 595 cond = tcg_invert_cond(cond); /* GE -> LT */ 596 flags ^= SETCOND_INV; 597 } 598 break; 599 default: 600 break; 601 } 602 603 switch (cond) { 604 case TCG_COND_NE: 605 flags |= SETCOND_NEZ; 606 if (!c2) { 607 tcg_out_opc_xor(s, ret, arg1, arg2); 608 } else if (arg2 == 0) { 609 ret = arg1; 610 } else if (arg2 >= 0 && arg2 <= 0xfff) { 611 tcg_out_opc_xori(s, ret, arg1, arg2); 612 } else { 613 tcg_out_addi(s, TCG_TYPE_REG, ret, arg1, -arg2); 614 } 615 break; 616 617 case TCG_COND_LT: 618 case TCG_COND_LTU: 619 if (c2) { 620 if (arg2 >= -0x800 && arg2 <= 0x7ff) { 621 if (cond == TCG_COND_LT) { 622 tcg_out_opc_slti(s, ret, arg1, arg2); 623 } else { 624 tcg_out_opc_sltui(s, ret, arg1, arg2); 625 } 626 break; 627 } 628 tcg_out_movi(s, TCG_TYPE_REG, TCG_REG_TMP0, arg2); 629 arg2 = TCG_REG_TMP0; 630 } 631 if (cond == TCG_COND_LT) { 632 tcg_out_opc_slt(s, ret, arg1, arg2); 633 } else { 634 tcg_out_opc_sltu(s, ret, arg1, arg2); 635 } 636 break; 637 638 default: 639 g_assert_not_reached(); 640 break; 641 } 642 643 return ret | flags; 644} 645 646static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGReg ret, 647 TCGReg arg1, tcg_target_long arg2, bool c2) 648{ 649 int tmpflags = tcg_out_setcond_int(s, cond, ret, arg1, arg2, c2); 650 651 if (tmpflags != ret) { 652 TCGReg tmp = tmpflags & ~SETCOND_FLAGS; 653 654 switch (tmpflags & SETCOND_FLAGS) { 655 case SETCOND_INV: 656 /* Intermediate result is boolean: simply invert. */ 657 tcg_out_opc_xori(s, ret, tmp, 1); 658 break; 659 case SETCOND_NEZ: 660 /* Intermediate result is zero/non-zero: test != 0. */ 661 tcg_out_opc_sltu(s, ret, TCG_REG_ZERO, tmp); 662 break; 663 case SETCOND_NEZ | SETCOND_INV: 664 /* Intermediate result is zero/non-zero: test == 0. */ 665 tcg_out_opc_sltui(s, ret, tmp, 1); 666 break; 667 default: 668 g_assert_not_reached(); 669 } 670 } 671} 672 673static void tcg_out_movcond(TCGContext *s, TCGCond cond, TCGReg ret, 674 TCGReg c1, tcg_target_long c2, bool const2, 675 TCGReg v1, TCGReg v2) 676{ 677 int tmpflags = tcg_out_setcond_int(s, cond, TCG_REG_TMP0, c1, c2, const2); 678 TCGReg t; 679 680 /* Standardize the test below to t != 0. */ 681 if (tmpflags & SETCOND_INV) { 682 t = v1, v1 = v2, v2 = t; 683 } 684 685 t = tmpflags & ~SETCOND_FLAGS; 686 if (v1 == TCG_REG_ZERO) { 687 tcg_out_opc_masknez(s, ret, v2, t); 688 } else if (v2 == TCG_REG_ZERO) { 689 tcg_out_opc_maskeqz(s, ret, v1, t); 690 } else { 691 tcg_out_opc_masknez(s, TCG_REG_TMP2, v2, t); /* t ? 0 : v2 */ 692 tcg_out_opc_maskeqz(s, TCG_REG_TMP1, v1, t); /* t ? v1 : 0 */ 693 tcg_out_opc_or(s, ret, TCG_REG_TMP1, TCG_REG_TMP2); 694 } 695} 696 697/* 698 * Branch helpers 699 */ 700 701static const struct { 702 LoongArchInsn op; 703 bool swap; 704} tcg_brcond_to_loongarch[] = { 705 [TCG_COND_EQ] = { OPC_BEQ, false }, 706 [TCG_COND_NE] = { OPC_BNE, false }, 707 [TCG_COND_LT] = { OPC_BGT, true }, 708 [TCG_COND_GE] = { OPC_BLE, true }, 709 [TCG_COND_LE] = { OPC_BLE, false }, 710 [TCG_COND_GT] = { OPC_BGT, false }, 711 [TCG_COND_LTU] = { OPC_BGTU, true }, 712 [TCG_COND_GEU] = { OPC_BLEU, true }, 713 [TCG_COND_LEU] = { OPC_BLEU, false }, 714 [TCG_COND_GTU] = { OPC_BGTU, false } 715}; 716 717static void tcg_out_brcond(TCGContext *s, TCGCond cond, TCGReg arg1, 718 TCGReg arg2, TCGLabel *l) 719{ 720 LoongArchInsn op = tcg_brcond_to_loongarch[cond].op; 721 722 tcg_debug_assert(op != 0); 723 724 if (tcg_brcond_to_loongarch[cond].swap) { 725 TCGReg t = arg1; 726 arg1 = arg2; 727 arg2 = t; 728 } 729 730 /* all conditional branch insns belong to DJSk16-format */ 731 tcg_out_reloc(s, s->code_ptr, R_LOONGARCH_BR_SK16, l, 0); 732 tcg_out32(s, encode_djsk16_insn(op, arg1, arg2, 0)); 733} 734 735static void tcg_out_call_int(TCGContext *s, const tcg_insn_unit *arg, bool tail) 736{ 737 TCGReg link = tail ? TCG_REG_ZERO : TCG_REG_RA; 738 ptrdiff_t offset = tcg_pcrel_diff(s, arg); 739 740 tcg_debug_assert((offset & 3) == 0); 741 if (offset == sextreg(offset, 0, 28)) { 742 /* short jump: +/- 256MiB */ 743 if (tail) { 744 tcg_out_opc_b(s, offset >> 2); 745 } else { 746 tcg_out_opc_bl(s, offset >> 2); 747 } 748 } else if (offset == sextreg(offset, 0, 38)) { 749 /* long jump: +/- 256GiB */ 750 tcg_target_long lo = sextreg(offset, 0, 18); 751 tcg_target_long hi = offset - lo; 752 tcg_out_opc_pcaddu18i(s, TCG_REG_TMP0, hi >> 18); 753 tcg_out_opc_jirl(s, link, TCG_REG_TMP0, lo >> 2); 754 } else { 755 /* far jump: 64-bit */ 756 tcg_target_long lo = sextreg((tcg_target_long)arg, 0, 18); 757 tcg_target_long hi = (tcg_target_long)arg - lo; 758 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP0, hi); 759 tcg_out_opc_jirl(s, link, TCG_REG_TMP0, lo >> 2); 760 } 761} 762 763static void tcg_out_call(TCGContext *s, const tcg_insn_unit *arg, 764 const TCGHelperInfo *info) 765{ 766 tcg_out_call_int(s, arg, false); 767} 768 769/* 770 * Load/store helpers 771 */ 772 773static void tcg_out_ldst(TCGContext *s, LoongArchInsn opc, TCGReg data, 774 TCGReg addr, intptr_t offset) 775{ 776 intptr_t imm12 = sextreg(offset, 0, 12); 777 778 if (offset != imm12) { 779 intptr_t diff = tcg_pcrel_diff(s, (void *)offset); 780 781 if (addr == TCG_REG_ZERO && diff == (int32_t)diff) { 782 imm12 = sextreg(diff, 0, 12); 783 tcg_out_opc_pcaddu12i(s, TCG_REG_TMP2, (diff - imm12) >> 12); 784 } else { 785 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_TMP2, offset - imm12); 786 if (addr != TCG_REG_ZERO) { 787 tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, addr); 788 } 789 } 790 addr = TCG_REG_TMP2; 791 } 792 793 switch (opc) { 794 case OPC_LD_B: 795 case OPC_LD_BU: 796 case OPC_LD_H: 797 case OPC_LD_HU: 798 case OPC_LD_W: 799 case OPC_LD_WU: 800 case OPC_LD_D: 801 case OPC_ST_B: 802 case OPC_ST_H: 803 case OPC_ST_W: 804 case OPC_ST_D: 805 tcg_out32(s, encode_djsk12_insn(opc, data, addr, imm12)); 806 break; 807 default: 808 g_assert_not_reached(); 809 } 810} 811 812static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg arg, 813 TCGReg arg1, intptr_t arg2) 814{ 815 bool is_32bit = type == TCG_TYPE_I32; 816 tcg_out_ldst(s, is_32bit ? OPC_LD_W : OPC_LD_D, arg, arg1, arg2); 817} 818 819static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, 820 TCGReg arg1, intptr_t arg2) 821{ 822 bool is_32bit = type == TCG_TYPE_I32; 823 tcg_out_ldst(s, is_32bit ? OPC_ST_W : OPC_ST_D, arg, arg1, arg2); 824} 825 826static bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val, 827 TCGReg base, intptr_t ofs) 828{ 829 if (val == 0) { 830 tcg_out_st(s, type, TCG_REG_ZERO, base, ofs); 831 return true; 832 } 833 return false; 834} 835 836/* 837 * Load/store helpers for SoftMMU, and qemu_ld/st implementations 838 */ 839 840static bool tcg_out_goto(TCGContext *s, const tcg_insn_unit *target) 841{ 842 tcg_out_opc_b(s, 0); 843 return reloc_br_sd10k16(s->code_ptr - 1, target); 844} 845 846static const TCGLdstHelperParam ldst_helper_param = { 847 .ntmp = 1, .tmp = { TCG_REG_TMP0 } 848}; 849 850static bool tcg_out_qemu_ld_slow_path(TCGContext *s, TCGLabelQemuLdst *l) 851{ 852 MemOp opc = get_memop(l->oi); 853 854 /* resolve label address */ 855 if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { 856 return false; 857 } 858 859 tcg_out_ld_helper_args(s, l, &ldst_helper_param); 860 tcg_out_call_int(s, qemu_ld_helpers[opc & MO_SIZE], false); 861 tcg_out_ld_helper_ret(s, l, false, &ldst_helper_param); 862 return tcg_out_goto(s, l->raddr); 863} 864 865static bool tcg_out_qemu_st_slow_path(TCGContext *s, TCGLabelQemuLdst *l) 866{ 867 MemOp opc = get_memop(l->oi); 868 869 /* resolve label address */ 870 if (!reloc_br_sk16(l->label_ptr[0], tcg_splitwx_to_rx(s->code_ptr))) { 871 return false; 872 } 873 874 tcg_out_st_helper_args(s, l, &ldst_helper_param); 875 tcg_out_call_int(s, qemu_st_helpers[opc & MO_SIZE], false); 876 return tcg_out_goto(s, l->raddr); 877} 878 879typedef struct { 880 TCGReg base; 881 TCGReg index; 882 TCGAtomAlign aa; 883} HostAddress; 884 885bool tcg_target_has_memory_bswap(MemOp memop) 886{ 887 return false; 888} 889 890/* We expect to use a 12-bit negative offset from ENV. */ 891#define MIN_TLB_MASK_TABLE_OFS -(1 << 11) 892 893/* 894 * For softmmu, perform the TLB load and compare. 895 * For useronly, perform any required alignment tests. 896 * In both cases, return a TCGLabelQemuLdst structure if the slow path 897 * is required and fill in @h with the host address for the fast path. 898 */ 899static TCGLabelQemuLdst *prepare_host_addr(TCGContext *s, HostAddress *h, 900 TCGReg addr_reg, MemOpIdx oi, 901 bool is_ld) 902{ 903 TCGType addr_type = s->addr_type; 904 TCGLabelQemuLdst *ldst = NULL; 905 MemOp opc = get_memop(oi); 906 MemOp a_bits; 907 908 h->aa = atom_and_align_for_opc(s, opc, MO_ATOM_IFALIGN, false); 909 a_bits = h->aa.align; 910 911#ifdef CONFIG_SOFTMMU 912 unsigned s_bits = opc & MO_SIZE; 913 int mem_index = get_mmuidx(oi); 914 int fast_ofs = tlb_mask_table_ofs(s, mem_index); 915 int mask_ofs = fast_ofs + offsetof(CPUTLBDescFast, mask); 916 int table_ofs = fast_ofs + offsetof(CPUTLBDescFast, table); 917 918 ldst = new_ldst_label(s); 919 ldst->is_ld = is_ld; 920 ldst->oi = oi; 921 ldst->addrlo_reg = addr_reg; 922 923 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_AREG0, mask_ofs); 924 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP1, TCG_AREG0, table_ofs); 925 926 tcg_out_opc_srli_d(s, TCG_REG_TMP2, addr_reg, 927 s->page_bits - CPU_TLB_ENTRY_BITS); 928 tcg_out_opc_and(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP0); 929 tcg_out_opc_add_d(s, TCG_REG_TMP2, TCG_REG_TMP2, TCG_REG_TMP1); 930 931 /* Load the tlb comparator and the addend. */ 932 QEMU_BUILD_BUG_ON(HOST_BIG_ENDIAN); 933 tcg_out_ld(s, addr_type, TCG_REG_TMP0, TCG_REG_TMP2, 934 is_ld ? offsetof(CPUTLBEntry, addr_read) 935 : offsetof(CPUTLBEntry, addr_write)); 936 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP2, TCG_REG_TMP2, 937 offsetof(CPUTLBEntry, addend)); 938 939 /* 940 * For aligned accesses, we check the first byte and include the alignment 941 * bits within the address. For unaligned access, we check that we don't 942 * cross pages using the address of the last byte of the access. 943 */ 944 if (a_bits < s_bits) { 945 unsigned a_mask = (1u << a_bits) - 1; 946 unsigned s_mask = (1u << s_bits) - 1; 947 tcg_out_addi(s, addr_type, TCG_REG_TMP1, addr_reg, s_mask - a_mask); 948 } else { 949 tcg_out_mov(s, addr_type, TCG_REG_TMP1, addr_reg); 950 } 951 tcg_out_opc_bstrins_d(s, TCG_REG_TMP1, TCG_REG_ZERO, 952 a_bits, s->page_bits - 1); 953 954 /* Compare masked address with the TLB entry. */ 955 ldst->label_ptr[0] = s->code_ptr; 956 tcg_out_opc_bne(s, TCG_REG_TMP0, TCG_REG_TMP1, 0); 957 958 h->index = TCG_REG_TMP2; 959#else 960 if (a_bits) { 961 ldst = new_ldst_label(s); 962 963 ldst->is_ld = is_ld; 964 ldst->oi = oi; 965 ldst->addrlo_reg = addr_reg; 966 967 /* 968 * Without micro-architecture details, we don't know which of 969 * bstrpick or andi is faster, so use bstrpick as it's not 970 * constrained by imm field width. Not to say alignments >= 2^12 971 * are going to happen any time soon. 972 */ 973 tcg_out_opc_bstrpick_d(s, TCG_REG_TMP1, addr_reg, 0, a_bits - 1); 974 975 ldst->label_ptr[0] = s->code_ptr; 976 tcg_out_opc_bne(s, TCG_REG_TMP1, TCG_REG_ZERO, 0); 977 } 978 979 h->index = USE_GUEST_BASE ? TCG_GUEST_BASE_REG : TCG_REG_ZERO; 980#endif 981 982 if (addr_type == TCG_TYPE_I32) { 983 h->base = TCG_REG_TMP0; 984 tcg_out_ext32u(s, h->base, addr_reg); 985 } else { 986 h->base = addr_reg; 987 } 988 989 return ldst; 990} 991 992static void tcg_out_qemu_ld_indexed(TCGContext *s, MemOp opc, TCGType type, 993 TCGReg rd, HostAddress h) 994{ 995 /* Byte swapping is left to middle-end expansion. */ 996 tcg_debug_assert((opc & MO_BSWAP) == 0); 997 998 switch (opc & MO_SSIZE) { 999 case MO_UB: 1000 tcg_out_opc_ldx_bu(s, rd, h.base, h.index); 1001 break; 1002 case MO_SB: 1003 tcg_out_opc_ldx_b(s, rd, h.base, h.index); 1004 break; 1005 case MO_UW: 1006 tcg_out_opc_ldx_hu(s, rd, h.base, h.index); 1007 break; 1008 case MO_SW: 1009 tcg_out_opc_ldx_h(s, rd, h.base, h.index); 1010 break; 1011 case MO_UL: 1012 if (type == TCG_TYPE_I64) { 1013 tcg_out_opc_ldx_wu(s, rd, h.base, h.index); 1014 break; 1015 } 1016 /* fallthrough */ 1017 case MO_SL: 1018 tcg_out_opc_ldx_w(s, rd, h.base, h.index); 1019 break; 1020 case MO_UQ: 1021 tcg_out_opc_ldx_d(s, rd, h.base, h.index); 1022 break; 1023 default: 1024 g_assert_not_reached(); 1025 } 1026} 1027 1028static void tcg_out_qemu_ld(TCGContext *s, TCGReg data_reg, TCGReg addr_reg, 1029 MemOpIdx oi, TCGType data_type) 1030{ 1031 TCGLabelQemuLdst *ldst; 1032 HostAddress h; 1033 1034 ldst = prepare_host_addr(s, &h, addr_reg, oi, true); 1035 tcg_out_qemu_ld_indexed(s, get_memop(oi), data_type, data_reg, h); 1036 1037 if (ldst) { 1038 ldst->type = data_type; 1039 ldst->datalo_reg = data_reg; 1040 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 1041 } 1042} 1043 1044static void tcg_out_qemu_st_indexed(TCGContext *s, MemOp opc, 1045 TCGReg rd, HostAddress h) 1046{ 1047 /* Byte swapping is left to middle-end expansion. */ 1048 tcg_debug_assert((opc & MO_BSWAP) == 0); 1049 1050 switch (opc & MO_SIZE) { 1051 case MO_8: 1052 tcg_out_opc_stx_b(s, rd, h.base, h.index); 1053 break; 1054 case MO_16: 1055 tcg_out_opc_stx_h(s, rd, h.base, h.index); 1056 break; 1057 case MO_32: 1058 tcg_out_opc_stx_w(s, rd, h.base, h.index); 1059 break; 1060 case MO_64: 1061 tcg_out_opc_stx_d(s, rd, h.base, h.index); 1062 break; 1063 default: 1064 g_assert_not_reached(); 1065 } 1066} 1067 1068static void tcg_out_qemu_st(TCGContext *s, TCGReg data_reg, TCGReg addr_reg, 1069 MemOpIdx oi, TCGType data_type) 1070{ 1071 TCGLabelQemuLdst *ldst; 1072 HostAddress h; 1073 1074 ldst = prepare_host_addr(s, &h, addr_reg, oi, false); 1075 tcg_out_qemu_st_indexed(s, get_memop(oi), data_reg, h); 1076 1077 if (ldst) { 1078 ldst->type = data_type; 1079 ldst->datalo_reg = data_reg; 1080 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 1081 } 1082} 1083 1084static void tcg_out_qemu_ldst_i128(TCGContext *s, TCGReg data_lo, TCGReg data_hi, 1085 TCGReg addr_reg, MemOpIdx oi, bool is_ld) 1086{ 1087 TCGLabelQemuLdst *ldst; 1088 HostAddress h; 1089 1090 ldst = prepare_host_addr(s, &h, addr_reg, oi, is_ld); 1091 1092 if (h.aa.atom == MO_128) { 1093 /* 1094 * Use VLDX/VSTX when 128-bit atomicity is required. 1095 * If address is aligned to 16-bytes, the 128-bit load/store is atomic. 1096 */ 1097 if (is_ld) { 1098 tcg_out_opc_vldx(s, TCG_VEC_TMP0, h.base, h.index); 1099 tcg_out_opc_vpickve2gr_d(s, data_lo, TCG_VEC_TMP0, 0); 1100 tcg_out_opc_vpickve2gr_d(s, data_hi, TCG_VEC_TMP0, 1); 1101 } else { 1102 tcg_out_opc_vinsgr2vr_d(s, TCG_VEC_TMP0, data_lo, 0); 1103 tcg_out_opc_vinsgr2vr_d(s, TCG_VEC_TMP0, data_hi, 1); 1104 tcg_out_opc_vstx(s, TCG_VEC_TMP0, h.base, h.index); 1105 } 1106 } else { 1107 /* Otherwise use a pair of LD/ST. */ 1108 tcg_out_opc_add_d(s, TCG_REG_TMP0, h.base, h.index); 1109 if (is_ld) { 1110 tcg_out_opc_ld_d(s, data_lo, TCG_REG_TMP0, 0); 1111 tcg_out_opc_ld_d(s, data_hi, TCG_REG_TMP0, 8); 1112 } else { 1113 tcg_out_opc_st_d(s, data_lo, TCG_REG_TMP0, 0); 1114 tcg_out_opc_st_d(s, data_hi, TCG_REG_TMP0, 8); 1115 } 1116 } 1117 1118 if (ldst) { 1119 ldst->type = TCG_TYPE_I128; 1120 ldst->datalo_reg = data_lo; 1121 ldst->datahi_reg = data_hi; 1122 ldst->raddr = tcg_splitwx_to_rx(s->code_ptr); 1123 } 1124} 1125 1126/* 1127 * Entry-points 1128 */ 1129 1130static const tcg_insn_unit *tb_ret_addr; 1131 1132static void tcg_out_exit_tb(TCGContext *s, uintptr_t a0) 1133{ 1134 /* Reuse the zeroing that exists for goto_ptr. */ 1135 if (a0 == 0) { 1136 tcg_out_call_int(s, tcg_code_gen_epilogue, true); 1137 } else { 1138 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0); 1139 tcg_out_call_int(s, tb_ret_addr, true); 1140 } 1141} 1142 1143static void tcg_out_goto_tb(TCGContext *s, int which) 1144{ 1145 /* 1146 * Direct branch, or load indirect address, to be patched 1147 * by tb_target_set_jmp_target. Check indirect load offset 1148 * in range early, regardless of direct branch distance, 1149 * via assert within tcg_out_opc_pcaddu2i. 1150 */ 1151 uintptr_t i_addr = get_jmp_target_addr(s, which); 1152 intptr_t i_disp = tcg_pcrel_diff(s, (void *)i_addr); 1153 1154 set_jmp_insn_offset(s, which); 1155 tcg_out_opc_pcaddu2i(s, TCG_REG_TMP0, i_disp >> 2); 1156 1157 /* Finish the load and indirect branch. */ 1158 tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_REG_TMP0, 0); 1159 tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_TMP0, 0); 1160 set_jmp_reset_offset(s, which); 1161} 1162 1163void tb_target_set_jmp_target(const TranslationBlock *tb, int n, 1164 uintptr_t jmp_rx, uintptr_t jmp_rw) 1165{ 1166 uintptr_t d_addr = tb->jmp_target_addr[n]; 1167 ptrdiff_t d_disp = (ptrdiff_t)(d_addr - jmp_rx) >> 2; 1168 tcg_insn_unit insn; 1169 1170 /* Either directly branch, or load slot address for indirect branch. */ 1171 if (d_disp == sextreg(d_disp, 0, 26)) { 1172 insn = encode_sd10k16_insn(OPC_B, d_disp); 1173 } else { 1174 uintptr_t i_addr = (uintptr_t)&tb->jmp_target_addr[n]; 1175 intptr_t i_disp = i_addr - jmp_rx; 1176 insn = encode_dsj20_insn(OPC_PCADDU2I, TCG_REG_TMP0, i_disp >> 2); 1177 } 1178 1179 qatomic_set((tcg_insn_unit *)jmp_rw, insn); 1180 flush_idcache_range(jmp_rx, jmp_rw, 4); 1181} 1182 1183static void tcg_out_op(TCGContext *s, TCGOpcode opc, 1184 const TCGArg args[TCG_MAX_OP_ARGS], 1185 const int const_args[TCG_MAX_OP_ARGS]) 1186{ 1187 TCGArg a0 = args[0]; 1188 TCGArg a1 = args[1]; 1189 TCGArg a2 = args[2]; 1190 TCGArg a3 = args[3]; 1191 int c2 = const_args[2]; 1192 1193 switch (opc) { 1194 case INDEX_op_mb: 1195 tcg_out_mb(s, a0); 1196 break; 1197 1198 case INDEX_op_goto_ptr: 1199 tcg_out_opc_jirl(s, TCG_REG_ZERO, a0, 0); 1200 break; 1201 1202 case INDEX_op_br: 1203 tcg_out_reloc(s, s->code_ptr, R_LOONGARCH_BR_SD10K16, arg_label(a0), 1204 0); 1205 tcg_out_opc_b(s, 0); 1206 break; 1207 1208 case INDEX_op_brcond_i32: 1209 case INDEX_op_brcond_i64: 1210 tcg_out_brcond(s, a2, a0, a1, arg_label(args[3])); 1211 break; 1212 1213 case INDEX_op_extrh_i64_i32: 1214 tcg_out_opc_srai_d(s, a0, a1, 32); 1215 break; 1216 1217 case INDEX_op_not_i32: 1218 case INDEX_op_not_i64: 1219 tcg_out_opc_nor(s, a0, a1, TCG_REG_ZERO); 1220 break; 1221 1222 case INDEX_op_nor_i32: 1223 case INDEX_op_nor_i64: 1224 if (c2) { 1225 tcg_out_opc_ori(s, a0, a1, a2); 1226 tcg_out_opc_nor(s, a0, a0, TCG_REG_ZERO); 1227 } else { 1228 tcg_out_opc_nor(s, a0, a1, a2); 1229 } 1230 break; 1231 1232 case INDEX_op_andc_i32: 1233 case INDEX_op_andc_i64: 1234 if (c2) { 1235 /* guaranteed to fit due to constraint */ 1236 tcg_out_opc_andi(s, a0, a1, ~a2); 1237 } else { 1238 tcg_out_opc_andn(s, a0, a1, a2); 1239 } 1240 break; 1241 1242 case INDEX_op_orc_i32: 1243 case INDEX_op_orc_i64: 1244 if (c2) { 1245 /* guaranteed to fit due to constraint */ 1246 tcg_out_opc_ori(s, a0, a1, ~a2); 1247 } else { 1248 tcg_out_opc_orn(s, a0, a1, a2); 1249 } 1250 break; 1251 1252 case INDEX_op_and_i32: 1253 case INDEX_op_and_i64: 1254 if (c2) { 1255 tcg_out_opc_andi(s, a0, a1, a2); 1256 } else { 1257 tcg_out_opc_and(s, a0, a1, a2); 1258 } 1259 break; 1260 1261 case INDEX_op_or_i32: 1262 case INDEX_op_or_i64: 1263 if (c2) { 1264 tcg_out_opc_ori(s, a0, a1, a2); 1265 } else { 1266 tcg_out_opc_or(s, a0, a1, a2); 1267 } 1268 break; 1269 1270 case INDEX_op_xor_i32: 1271 case INDEX_op_xor_i64: 1272 if (c2) { 1273 tcg_out_opc_xori(s, a0, a1, a2); 1274 } else { 1275 tcg_out_opc_xor(s, a0, a1, a2); 1276 } 1277 break; 1278 1279 case INDEX_op_extract_i32: 1280 tcg_out_opc_bstrpick_w(s, a0, a1, a2, a2 + args[3] - 1); 1281 break; 1282 case INDEX_op_extract_i64: 1283 tcg_out_opc_bstrpick_d(s, a0, a1, a2, a2 + args[3] - 1); 1284 break; 1285 1286 case INDEX_op_deposit_i32: 1287 tcg_out_opc_bstrins_w(s, a0, a2, args[3], args[3] + args[4] - 1); 1288 break; 1289 case INDEX_op_deposit_i64: 1290 tcg_out_opc_bstrins_d(s, a0, a2, args[3], args[3] + args[4] - 1); 1291 break; 1292 1293 case INDEX_op_bswap16_i32: 1294 case INDEX_op_bswap16_i64: 1295 tcg_out_opc_revb_2h(s, a0, a1); 1296 if (a2 & TCG_BSWAP_OS) { 1297 tcg_out_ext16s(s, TCG_TYPE_REG, a0, a0); 1298 } else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) { 1299 tcg_out_ext16u(s, a0, a0); 1300 } 1301 break; 1302 1303 case INDEX_op_bswap32_i32: 1304 /* All 32-bit values are computed sign-extended in the register. */ 1305 a2 = TCG_BSWAP_OS; 1306 /* fallthrough */ 1307 case INDEX_op_bswap32_i64: 1308 tcg_out_opc_revb_2w(s, a0, a1); 1309 if (a2 & TCG_BSWAP_OS) { 1310 tcg_out_ext32s(s, a0, a0); 1311 } else if ((a2 & (TCG_BSWAP_IZ | TCG_BSWAP_OZ)) == TCG_BSWAP_OZ) { 1312 tcg_out_ext32u(s, a0, a0); 1313 } 1314 break; 1315 1316 case INDEX_op_bswap64_i64: 1317 tcg_out_opc_revb_d(s, a0, a1); 1318 break; 1319 1320 case INDEX_op_clz_i32: 1321 tcg_out_clzctz(s, OPC_CLZ_W, a0, a1, a2, c2, true); 1322 break; 1323 case INDEX_op_clz_i64: 1324 tcg_out_clzctz(s, OPC_CLZ_D, a0, a1, a2, c2, false); 1325 break; 1326 1327 case INDEX_op_ctz_i32: 1328 tcg_out_clzctz(s, OPC_CTZ_W, a0, a1, a2, c2, true); 1329 break; 1330 case INDEX_op_ctz_i64: 1331 tcg_out_clzctz(s, OPC_CTZ_D, a0, a1, a2, c2, false); 1332 break; 1333 1334 case INDEX_op_shl_i32: 1335 if (c2) { 1336 tcg_out_opc_slli_w(s, a0, a1, a2 & 0x1f); 1337 } else { 1338 tcg_out_opc_sll_w(s, a0, a1, a2); 1339 } 1340 break; 1341 case INDEX_op_shl_i64: 1342 if (c2) { 1343 tcg_out_opc_slli_d(s, a0, a1, a2 & 0x3f); 1344 } else { 1345 tcg_out_opc_sll_d(s, a0, a1, a2); 1346 } 1347 break; 1348 1349 case INDEX_op_shr_i32: 1350 if (c2) { 1351 tcg_out_opc_srli_w(s, a0, a1, a2 & 0x1f); 1352 } else { 1353 tcg_out_opc_srl_w(s, a0, a1, a2); 1354 } 1355 break; 1356 case INDEX_op_shr_i64: 1357 if (c2) { 1358 tcg_out_opc_srli_d(s, a0, a1, a2 & 0x3f); 1359 } else { 1360 tcg_out_opc_srl_d(s, a0, a1, a2); 1361 } 1362 break; 1363 1364 case INDEX_op_sar_i32: 1365 if (c2) { 1366 tcg_out_opc_srai_w(s, a0, a1, a2 & 0x1f); 1367 } else { 1368 tcg_out_opc_sra_w(s, a0, a1, a2); 1369 } 1370 break; 1371 case INDEX_op_sar_i64: 1372 if (c2) { 1373 tcg_out_opc_srai_d(s, a0, a1, a2 & 0x3f); 1374 } else { 1375 tcg_out_opc_sra_d(s, a0, a1, a2); 1376 } 1377 break; 1378 1379 case INDEX_op_rotl_i32: 1380 /* transform into equivalent rotr/rotri */ 1381 if (c2) { 1382 tcg_out_opc_rotri_w(s, a0, a1, (32 - a2) & 0x1f); 1383 } else { 1384 tcg_out_opc_sub_w(s, TCG_REG_TMP0, TCG_REG_ZERO, a2); 1385 tcg_out_opc_rotr_w(s, a0, a1, TCG_REG_TMP0); 1386 } 1387 break; 1388 case INDEX_op_rotl_i64: 1389 /* transform into equivalent rotr/rotri */ 1390 if (c2) { 1391 tcg_out_opc_rotri_d(s, a0, a1, (64 - a2) & 0x3f); 1392 } else { 1393 tcg_out_opc_sub_w(s, TCG_REG_TMP0, TCG_REG_ZERO, a2); 1394 tcg_out_opc_rotr_d(s, a0, a1, TCG_REG_TMP0); 1395 } 1396 break; 1397 1398 case INDEX_op_rotr_i32: 1399 if (c2) { 1400 tcg_out_opc_rotri_w(s, a0, a1, a2 & 0x1f); 1401 } else { 1402 tcg_out_opc_rotr_w(s, a0, a1, a2); 1403 } 1404 break; 1405 case INDEX_op_rotr_i64: 1406 if (c2) { 1407 tcg_out_opc_rotri_d(s, a0, a1, a2 & 0x3f); 1408 } else { 1409 tcg_out_opc_rotr_d(s, a0, a1, a2); 1410 } 1411 break; 1412 1413 case INDEX_op_add_i32: 1414 if (c2) { 1415 tcg_out_addi(s, TCG_TYPE_I32, a0, a1, a2); 1416 } else { 1417 tcg_out_opc_add_w(s, a0, a1, a2); 1418 } 1419 break; 1420 case INDEX_op_add_i64: 1421 if (c2) { 1422 tcg_out_addi(s, TCG_TYPE_I64, a0, a1, a2); 1423 } else { 1424 tcg_out_opc_add_d(s, a0, a1, a2); 1425 } 1426 break; 1427 1428 case INDEX_op_sub_i32: 1429 if (c2) { 1430 tcg_out_addi(s, TCG_TYPE_I32, a0, a1, -a2); 1431 } else { 1432 tcg_out_opc_sub_w(s, a0, a1, a2); 1433 } 1434 break; 1435 case INDEX_op_sub_i64: 1436 if (c2) { 1437 tcg_out_addi(s, TCG_TYPE_I64, a0, a1, -a2); 1438 } else { 1439 tcg_out_opc_sub_d(s, a0, a1, a2); 1440 } 1441 break; 1442 1443 case INDEX_op_mul_i32: 1444 tcg_out_opc_mul_w(s, a0, a1, a2); 1445 break; 1446 case INDEX_op_mul_i64: 1447 tcg_out_opc_mul_d(s, a0, a1, a2); 1448 break; 1449 1450 case INDEX_op_mulsh_i32: 1451 tcg_out_opc_mulh_w(s, a0, a1, a2); 1452 break; 1453 case INDEX_op_mulsh_i64: 1454 tcg_out_opc_mulh_d(s, a0, a1, a2); 1455 break; 1456 1457 case INDEX_op_muluh_i32: 1458 tcg_out_opc_mulh_wu(s, a0, a1, a2); 1459 break; 1460 case INDEX_op_muluh_i64: 1461 tcg_out_opc_mulh_du(s, a0, a1, a2); 1462 break; 1463 1464 case INDEX_op_div_i32: 1465 tcg_out_opc_div_w(s, a0, a1, a2); 1466 break; 1467 case INDEX_op_div_i64: 1468 tcg_out_opc_div_d(s, a0, a1, a2); 1469 break; 1470 1471 case INDEX_op_divu_i32: 1472 tcg_out_opc_div_wu(s, a0, a1, a2); 1473 break; 1474 case INDEX_op_divu_i64: 1475 tcg_out_opc_div_du(s, a0, a1, a2); 1476 break; 1477 1478 case INDEX_op_rem_i32: 1479 tcg_out_opc_mod_w(s, a0, a1, a2); 1480 break; 1481 case INDEX_op_rem_i64: 1482 tcg_out_opc_mod_d(s, a0, a1, a2); 1483 break; 1484 1485 case INDEX_op_remu_i32: 1486 tcg_out_opc_mod_wu(s, a0, a1, a2); 1487 break; 1488 case INDEX_op_remu_i64: 1489 tcg_out_opc_mod_du(s, a0, a1, a2); 1490 break; 1491 1492 case INDEX_op_setcond_i32: 1493 case INDEX_op_setcond_i64: 1494 tcg_out_setcond(s, args[3], a0, a1, a2, c2); 1495 break; 1496 1497 case INDEX_op_movcond_i32: 1498 case INDEX_op_movcond_i64: 1499 tcg_out_movcond(s, args[5], a0, a1, a2, c2, args[3], args[4]); 1500 break; 1501 1502 case INDEX_op_ld8s_i32: 1503 case INDEX_op_ld8s_i64: 1504 tcg_out_ldst(s, OPC_LD_B, a0, a1, a2); 1505 break; 1506 case INDEX_op_ld8u_i32: 1507 case INDEX_op_ld8u_i64: 1508 tcg_out_ldst(s, OPC_LD_BU, a0, a1, a2); 1509 break; 1510 case INDEX_op_ld16s_i32: 1511 case INDEX_op_ld16s_i64: 1512 tcg_out_ldst(s, OPC_LD_H, a0, a1, a2); 1513 break; 1514 case INDEX_op_ld16u_i32: 1515 case INDEX_op_ld16u_i64: 1516 tcg_out_ldst(s, OPC_LD_HU, a0, a1, a2); 1517 break; 1518 case INDEX_op_ld_i32: 1519 case INDEX_op_ld32s_i64: 1520 tcg_out_ldst(s, OPC_LD_W, a0, a1, a2); 1521 break; 1522 case INDEX_op_ld32u_i64: 1523 tcg_out_ldst(s, OPC_LD_WU, a0, a1, a2); 1524 break; 1525 case INDEX_op_ld_i64: 1526 tcg_out_ldst(s, OPC_LD_D, a0, a1, a2); 1527 break; 1528 1529 case INDEX_op_st8_i32: 1530 case INDEX_op_st8_i64: 1531 tcg_out_ldst(s, OPC_ST_B, a0, a1, a2); 1532 break; 1533 case INDEX_op_st16_i32: 1534 case INDEX_op_st16_i64: 1535 tcg_out_ldst(s, OPC_ST_H, a0, a1, a2); 1536 break; 1537 case INDEX_op_st_i32: 1538 case INDEX_op_st32_i64: 1539 tcg_out_ldst(s, OPC_ST_W, a0, a1, a2); 1540 break; 1541 case INDEX_op_st_i64: 1542 tcg_out_ldst(s, OPC_ST_D, a0, a1, a2); 1543 break; 1544 1545 case INDEX_op_qemu_ld_a32_i32: 1546 case INDEX_op_qemu_ld_a64_i32: 1547 tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I32); 1548 break; 1549 case INDEX_op_qemu_ld_a32_i64: 1550 case INDEX_op_qemu_ld_a64_i64: 1551 tcg_out_qemu_ld(s, a0, a1, a2, TCG_TYPE_I64); 1552 break; 1553 case INDEX_op_qemu_ld_a32_i128: 1554 case INDEX_op_qemu_ld_a64_i128: 1555 tcg_out_qemu_ldst_i128(s, a0, a1, a2, a3, true); 1556 break; 1557 case INDEX_op_qemu_st_a32_i32: 1558 case INDEX_op_qemu_st_a64_i32: 1559 tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I32); 1560 break; 1561 case INDEX_op_qemu_st_a32_i64: 1562 case INDEX_op_qemu_st_a64_i64: 1563 tcg_out_qemu_st(s, a0, a1, a2, TCG_TYPE_I64); 1564 break; 1565 case INDEX_op_qemu_st_a32_i128: 1566 case INDEX_op_qemu_st_a64_i128: 1567 tcg_out_qemu_ldst_i128(s, a0, a1, a2, a3, false); 1568 break; 1569 1570 case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */ 1571 case INDEX_op_mov_i64: 1572 case INDEX_op_call: /* Always emitted via tcg_out_call. */ 1573 case INDEX_op_exit_tb: /* Always emitted via tcg_out_exit_tb. */ 1574 case INDEX_op_goto_tb: /* Always emitted via tcg_out_goto_tb. */ 1575 case INDEX_op_ext8s_i32: /* Always emitted via tcg_reg_alloc_op. */ 1576 case INDEX_op_ext8s_i64: 1577 case INDEX_op_ext8u_i32: 1578 case INDEX_op_ext8u_i64: 1579 case INDEX_op_ext16s_i32: 1580 case INDEX_op_ext16s_i64: 1581 case INDEX_op_ext16u_i32: 1582 case INDEX_op_ext16u_i64: 1583 case INDEX_op_ext32s_i64: 1584 case INDEX_op_ext32u_i64: 1585 case INDEX_op_ext_i32_i64: 1586 case INDEX_op_extu_i32_i64: 1587 case INDEX_op_extrl_i64_i32: 1588 default: 1589 g_assert_not_reached(); 1590 } 1591} 1592 1593static bool tcg_out_dup_vec(TCGContext *s, TCGType type, unsigned vece, 1594 TCGReg rd, TCGReg rs) 1595{ 1596 switch (vece) { 1597 case MO_8: 1598 tcg_out_opc_vreplgr2vr_b(s, rd, rs); 1599 break; 1600 case MO_16: 1601 tcg_out_opc_vreplgr2vr_h(s, rd, rs); 1602 break; 1603 case MO_32: 1604 tcg_out_opc_vreplgr2vr_w(s, rd, rs); 1605 break; 1606 case MO_64: 1607 tcg_out_opc_vreplgr2vr_d(s, rd, rs); 1608 break; 1609 default: 1610 g_assert_not_reached(); 1611 } 1612 return true; 1613} 1614 1615static bool tcg_out_dupm_vec(TCGContext *s, TCGType type, unsigned vece, 1616 TCGReg r, TCGReg base, intptr_t offset) 1617{ 1618 /* Handle imm overflow and division (vldrepl.d imm is divided by 8) */ 1619 if (offset < -0x800 || offset > 0x7ff || \ 1620 (offset & ((1 << vece) - 1)) != 0) { 1621 tcg_out_addi(s, TCG_TYPE_I64, TCG_REG_TMP0, base, offset); 1622 base = TCG_REG_TMP0; 1623 offset = 0; 1624 } 1625 offset >>= vece; 1626 1627 switch (vece) { 1628 case MO_8: 1629 tcg_out_opc_vldrepl_b(s, r, base, offset); 1630 break; 1631 case MO_16: 1632 tcg_out_opc_vldrepl_h(s, r, base, offset); 1633 break; 1634 case MO_32: 1635 tcg_out_opc_vldrepl_w(s, r, base, offset); 1636 break; 1637 case MO_64: 1638 tcg_out_opc_vldrepl_d(s, r, base, offset); 1639 break; 1640 default: 1641 g_assert_not_reached(); 1642 } 1643 return true; 1644} 1645 1646static void tcg_out_dupi_vec(TCGContext *s, TCGType type, unsigned vece, 1647 TCGReg rd, int64_t v64) 1648{ 1649 /* Try vldi if imm can fit */ 1650 int64_t value = sextract64(v64, 0, 8 << vece); 1651 if (-0x200 <= value && value <= 0x1FF) { 1652 uint32_t imm = (vece << 10) | ((uint32_t)v64 & 0x3FF); 1653 tcg_out_opc_vldi(s, rd, imm); 1654 return; 1655 } 1656 1657 /* TODO: vldi patterns when imm 12 is set */ 1658 1659 /* Fallback to vreplgr2vr */ 1660 tcg_out_movi(s, TCG_TYPE_I64, TCG_REG_TMP0, value); 1661 switch (vece) { 1662 case MO_8: 1663 tcg_out_opc_vreplgr2vr_b(s, rd, TCG_REG_TMP0); 1664 break; 1665 case MO_16: 1666 tcg_out_opc_vreplgr2vr_h(s, rd, TCG_REG_TMP0); 1667 break; 1668 case MO_32: 1669 tcg_out_opc_vreplgr2vr_w(s, rd, TCG_REG_TMP0); 1670 break; 1671 case MO_64: 1672 tcg_out_opc_vreplgr2vr_d(s, rd, TCG_REG_TMP0); 1673 break; 1674 default: 1675 g_assert_not_reached(); 1676 } 1677} 1678 1679static void tcg_out_addsub_vec(TCGContext *s, unsigned vece, const TCGArg a0, 1680 const TCGArg a1, const TCGArg a2, 1681 bool a2_is_const, bool is_add) 1682{ 1683 static const LoongArchInsn add_vec_insn[4] = { 1684 OPC_VADD_B, OPC_VADD_H, OPC_VADD_W, OPC_VADD_D 1685 }; 1686 static const LoongArchInsn add_vec_imm_insn[4] = { 1687 OPC_VADDI_BU, OPC_VADDI_HU, OPC_VADDI_WU, OPC_VADDI_DU 1688 }; 1689 static const LoongArchInsn sub_vec_insn[4] = { 1690 OPC_VSUB_B, OPC_VSUB_H, OPC_VSUB_W, OPC_VSUB_D 1691 }; 1692 static const LoongArchInsn sub_vec_imm_insn[4] = { 1693 OPC_VSUBI_BU, OPC_VSUBI_HU, OPC_VSUBI_WU, OPC_VSUBI_DU 1694 }; 1695 1696 if (a2_is_const) { 1697 int64_t value = sextract64(a2, 0, 8 << vece); 1698 if (!is_add) { 1699 value = -value; 1700 } 1701 1702 /* Try vaddi/vsubi */ 1703 if (0 <= value && value <= 0x1f) { 1704 tcg_out32(s, encode_vdvjuk5_insn(add_vec_imm_insn[vece], a0, \ 1705 a1, value)); 1706 return; 1707 } else if (-0x1f <= value && value < 0) { 1708 tcg_out32(s, encode_vdvjuk5_insn(sub_vec_imm_insn[vece], a0, \ 1709 a1, -value)); 1710 return; 1711 } 1712 1713 /* constraint TCG_CT_CONST_VADD ensures unreachable */ 1714 g_assert_not_reached(); 1715 } 1716 1717 if (is_add) { 1718 tcg_out32(s, encode_vdvjvk_insn(add_vec_insn[vece], a0, a1, a2)); 1719 } else { 1720 tcg_out32(s, encode_vdvjvk_insn(sub_vec_insn[vece], a0, a1, a2)); 1721 } 1722} 1723 1724static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc, 1725 unsigned vecl, unsigned vece, 1726 const TCGArg args[TCG_MAX_OP_ARGS], 1727 const int const_args[TCG_MAX_OP_ARGS]) 1728{ 1729 TCGType type = vecl + TCG_TYPE_V64; 1730 TCGArg a0, a1, a2, a3; 1731 TCGReg temp = TCG_REG_TMP0; 1732 TCGReg temp_vec = TCG_VEC_TMP0; 1733 1734 static const LoongArchInsn cmp_vec_insn[16][4] = { 1735 [TCG_COND_EQ] = {OPC_VSEQ_B, OPC_VSEQ_H, OPC_VSEQ_W, OPC_VSEQ_D}, 1736 [TCG_COND_LE] = {OPC_VSLE_B, OPC_VSLE_H, OPC_VSLE_W, OPC_VSLE_D}, 1737 [TCG_COND_LEU] = {OPC_VSLE_BU, OPC_VSLE_HU, OPC_VSLE_WU, OPC_VSLE_DU}, 1738 [TCG_COND_LT] = {OPC_VSLT_B, OPC_VSLT_H, OPC_VSLT_W, OPC_VSLT_D}, 1739 [TCG_COND_LTU] = {OPC_VSLT_BU, OPC_VSLT_HU, OPC_VSLT_WU, OPC_VSLT_DU}, 1740 }; 1741 static const LoongArchInsn cmp_vec_imm_insn[16][4] = { 1742 [TCG_COND_EQ] = {OPC_VSEQI_B, OPC_VSEQI_H, OPC_VSEQI_W, OPC_VSEQI_D}, 1743 [TCG_COND_LE] = {OPC_VSLEI_B, OPC_VSLEI_H, OPC_VSLEI_W, OPC_VSLEI_D}, 1744 [TCG_COND_LEU] = {OPC_VSLEI_BU, OPC_VSLEI_HU, OPC_VSLEI_WU, OPC_VSLEI_DU}, 1745 [TCG_COND_LT] = {OPC_VSLTI_B, OPC_VSLTI_H, OPC_VSLTI_W, OPC_VSLTI_D}, 1746 [TCG_COND_LTU] = {OPC_VSLTI_BU, OPC_VSLTI_HU, OPC_VSLTI_WU, OPC_VSLTI_DU}, 1747 }; 1748 LoongArchInsn insn; 1749 static const LoongArchInsn neg_vec_insn[4] = { 1750 OPC_VNEG_B, OPC_VNEG_H, OPC_VNEG_W, OPC_VNEG_D 1751 }; 1752 static const LoongArchInsn mul_vec_insn[4] = { 1753 OPC_VMUL_B, OPC_VMUL_H, OPC_VMUL_W, OPC_VMUL_D 1754 }; 1755 static const LoongArchInsn smin_vec_insn[4] = { 1756 OPC_VMIN_B, OPC_VMIN_H, OPC_VMIN_W, OPC_VMIN_D 1757 }; 1758 static const LoongArchInsn umin_vec_insn[4] = { 1759 OPC_VMIN_BU, OPC_VMIN_HU, OPC_VMIN_WU, OPC_VMIN_DU 1760 }; 1761 static const LoongArchInsn smax_vec_insn[4] = { 1762 OPC_VMAX_B, OPC_VMAX_H, OPC_VMAX_W, OPC_VMAX_D 1763 }; 1764 static const LoongArchInsn umax_vec_insn[4] = { 1765 OPC_VMAX_BU, OPC_VMAX_HU, OPC_VMAX_WU, OPC_VMAX_DU 1766 }; 1767 static const LoongArchInsn ssadd_vec_insn[4] = { 1768 OPC_VSADD_B, OPC_VSADD_H, OPC_VSADD_W, OPC_VSADD_D 1769 }; 1770 static const LoongArchInsn usadd_vec_insn[4] = { 1771 OPC_VSADD_BU, OPC_VSADD_HU, OPC_VSADD_WU, OPC_VSADD_DU 1772 }; 1773 static const LoongArchInsn sssub_vec_insn[4] = { 1774 OPC_VSSUB_B, OPC_VSSUB_H, OPC_VSSUB_W, OPC_VSSUB_D 1775 }; 1776 static const LoongArchInsn ussub_vec_insn[4] = { 1777 OPC_VSSUB_BU, OPC_VSSUB_HU, OPC_VSSUB_WU, OPC_VSSUB_DU 1778 }; 1779 static const LoongArchInsn shlv_vec_insn[4] = { 1780 OPC_VSLL_B, OPC_VSLL_H, OPC_VSLL_W, OPC_VSLL_D 1781 }; 1782 static const LoongArchInsn shrv_vec_insn[4] = { 1783 OPC_VSRL_B, OPC_VSRL_H, OPC_VSRL_W, OPC_VSRL_D 1784 }; 1785 static const LoongArchInsn sarv_vec_insn[4] = { 1786 OPC_VSRA_B, OPC_VSRA_H, OPC_VSRA_W, OPC_VSRA_D 1787 }; 1788 static const LoongArchInsn shli_vec_insn[4] = { 1789 OPC_VSLLI_B, OPC_VSLLI_H, OPC_VSLLI_W, OPC_VSLLI_D 1790 }; 1791 static const LoongArchInsn shri_vec_insn[4] = { 1792 OPC_VSRLI_B, OPC_VSRLI_H, OPC_VSRLI_W, OPC_VSRLI_D 1793 }; 1794 static const LoongArchInsn sari_vec_insn[4] = { 1795 OPC_VSRAI_B, OPC_VSRAI_H, OPC_VSRAI_W, OPC_VSRAI_D 1796 }; 1797 static const LoongArchInsn rotrv_vec_insn[4] = { 1798 OPC_VROTR_B, OPC_VROTR_H, OPC_VROTR_W, OPC_VROTR_D 1799 }; 1800 1801 a0 = args[0]; 1802 a1 = args[1]; 1803 a2 = args[2]; 1804 a3 = args[3]; 1805 1806 /* Currently only supports V128 */ 1807 tcg_debug_assert(type == TCG_TYPE_V128); 1808 1809 switch (opc) { 1810 case INDEX_op_st_vec: 1811 /* Try to fit vst imm */ 1812 if (-0x800 <= a2 && a2 <= 0x7ff) { 1813 tcg_out_opc_vst(s, a0, a1, a2); 1814 } else { 1815 tcg_out_movi(s, TCG_TYPE_I64, temp, a2); 1816 tcg_out_opc_vstx(s, a0, a1, temp); 1817 } 1818 break; 1819 case INDEX_op_ld_vec: 1820 /* Try to fit vld imm */ 1821 if (-0x800 <= a2 && a2 <= 0x7ff) { 1822 tcg_out_opc_vld(s, a0, a1, a2); 1823 } else { 1824 tcg_out_movi(s, TCG_TYPE_I64, temp, a2); 1825 tcg_out_opc_vldx(s, a0, a1, temp); 1826 } 1827 break; 1828 case INDEX_op_and_vec: 1829 tcg_out_opc_vand_v(s, a0, a1, a2); 1830 break; 1831 case INDEX_op_andc_vec: 1832 /* 1833 * vandn vd, vj, vk: vd = vk & ~vj 1834 * andc_vec vd, vj, vk: vd = vj & ~vk 1835 * vk and vk are swapped 1836 */ 1837 tcg_out_opc_vandn_v(s, a0, a2, a1); 1838 break; 1839 case INDEX_op_or_vec: 1840 tcg_out_opc_vor_v(s, a0, a1, a2); 1841 break; 1842 case INDEX_op_orc_vec: 1843 tcg_out_opc_vorn_v(s, a0, a1, a2); 1844 break; 1845 case INDEX_op_xor_vec: 1846 tcg_out_opc_vxor_v(s, a0, a1, a2); 1847 break; 1848 case INDEX_op_nor_vec: 1849 tcg_out_opc_vnor_v(s, a0, a1, a2); 1850 break; 1851 case INDEX_op_not_vec: 1852 tcg_out_opc_vnor_v(s, a0, a1, a1); 1853 break; 1854 case INDEX_op_cmp_vec: 1855 { 1856 TCGCond cond = args[3]; 1857 if (const_args[2]) { 1858 /* 1859 * cmp_vec dest, src, value 1860 * Try vseqi/vslei/vslti 1861 */ 1862 int64_t value = sextract64(a2, 0, 8 << vece); 1863 if ((cond == TCG_COND_EQ || cond == TCG_COND_LE || \ 1864 cond == TCG_COND_LT) && (-0x10 <= value && value <= 0x0f)) { 1865 tcg_out32(s, encode_vdvjsk5_insn(cmp_vec_imm_insn[cond][vece], \ 1866 a0, a1, value)); 1867 break; 1868 } else if ((cond == TCG_COND_LEU || cond == TCG_COND_LTU) && 1869 (0x00 <= value && value <= 0x1f)) { 1870 tcg_out32(s, encode_vdvjuk5_insn(cmp_vec_imm_insn[cond][vece], \ 1871 a0, a1, value)); 1872 break; 1873 } 1874 1875 /* 1876 * Fallback to: 1877 * dupi_vec temp, a2 1878 * cmp_vec a0, a1, temp, cond 1879 */ 1880 tcg_out_dupi_vec(s, type, vece, temp_vec, a2); 1881 a2 = temp_vec; 1882 } 1883 1884 insn = cmp_vec_insn[cond][vece]; 1885 if (insn == 0) { 1886 TCGArg t; 1887 t = a1, a1 = a2, a2 = t; 1888 cond = tcg_swap_cond(cond); 1889 insn = cmp_vec_insn[cond][vece]; 1890 tcg_debug_assert(insn != 0); 1891 } 1892 tcg_out32(s, encode_vdvjvk_insn(insn, a0, a1, a2)); 1893 } 1894 break; 1895 case INDEX_op_add_vec: 1896 tcg_out_addsub_vec(s, vece, a0, a1, a2, const_args[2], true); 1897 break; 1898 case INDEX_op_sub_vec: 1899 tcg_out_addsub_vec(s, vece, a0, a1, a2, const_args[2], false); 1900 break; 1901 case INDEX_op_neg_vec: 1902 tcg_out32(s, encode_vdvj_insn(neg_vec_insn[vece], a0, a1)); 1903 break; 1904 case INDEX_op_mul_vec: 1905 tcg_out32(s, encode_vdvjvk_insn(mul_vec_insn[vece], a0, a1, a2)); 1906 break; 1907 case INDEX_op_smin_vec: 1908 tcg_out32(s, encode_vdvjvk_insn(smin_vec_insn[vece], a0, a1, a2)); 1909 break; 1910 case INDEX_op_smax_vec: 1911 tcg_out32(s, encode_vdvjvk_insn(smax_vec_insn[vece], a0, a1, a2)); 1912 break; 1913 case INDEX_op_umin_vec: 1914 tcg_out32(s, encode_vdvjvk_insn(umin_vec_insn[vece], a0, a1, a2)); 1915 break; 1916 case INDEX_op_umax_vec: 1917 tcg_out32(s, encode_vdvjvk_insn(umax_vec_insn[vece], a0, a1, a2)); 1918 break; 1919 case INDEX_op_ssadd_vec: 1920 tcg_out32(s, encode_vdvjvk_insn(ssadd_vec_insn[vece], a0, a1, a2)); 1921 break; 1922 case INDEX_op_usadd_vec: 1923 tcg_out32(s, encode_vdvjvk_insn(usadd_vec_insn[vece], a0, a1, a2)); 1924 break; 1925 case INDEX_op_sssub_vec: 1926 tcg_out32(s, encode_vdvjvk_insn(sssub_vec_insn[vece], a0, a1, a2)); 1927 break; 1928 case INDEX_op_ussub_vec: 1929 tcg_out32(s, encode_vdvjvk_insn(ussub_vec_insn[vece], a0, a1, a2)); 1930 break; 1931 case INDEX_op_shlv_vec: 1932 tcg_out32(s, encode_vdvjvk_insn(shlv_vec_insn[vece], a0, a1, a2)); 1933 break; 1934 case INDEX_op_shrv_vec: 1935 tcg_out32(s, encode_vdvjvk_insn(shrv_vec_insn[vece], a0, a1, a2)); 1936 break; 1937 case INDEX_op_sarv_vec: 1938 tcg_out32(s, encode_vdvjvk_insn(sarv_vec_insn[vece], a0, a1, a2)); 1939 break; 1940 case INDEX_op_shli_vec: 1941 tcg_out32(s, encode_vdvjuk3_insn(shli_vec_insn[vece], a0, a1, a2)); 1942 break; 1943 case INDEX_op_shri_vec: 1944 tcg_out32(s, encode_vdvjuk3_insn(shri_vec_insn[vece], a0, a1, a2)); 1945 break; 1946 case INDEX_op_sari_vec: 1947 tcg_out32(s, encode_vdvjuk3_insn(sari_vec_insn[vece], a0, a1, a2)); 1948 break; 1949 case INDEX_op_rotrv_vec: 1950 tcg_out32(s, encode_vdvjvk_insn(rotrv_vec_insn[vece], a0, a1, a2)); 1951 break; 1952 case INDEX_op_rotlv_vec: 1953 /* rotlv_vec a1, a2 = rotrv_vec a1, -a2 */ 1954 tcg_out32(s, encode_vdvj_insn(neg_vec_insn[vece], temp_vec, a2)); 1955 tcg_out32(s, encode_vdvjvk_insn(rotrv_vec_insn[vece], a0, a1, 1956 temp_vec)); 1957 break; 1958 case INDEX_op_rotli_vec: 1959 /* rotli_vec a1, a2 = rotri_vec a1, -a2 */ 1960 a2 = extract32(-a2, 0, 3 + vece); 1961 switch (vece) { 1962 case MO_8: 1963 tcg_out_opc_vrotri_b(s, a0, a1, a2); 1964 break; 1965 case MO_16: 1966 tcg_out_opc_vrotri_h(s, a0, a1, a2); 1967 break; 1968 case MO_32: 1969 tcg_out_opc_vrotri_w(s, a0, a1, a2); 1970 break; 1971 case MO_64: 1972 tcg_out_opc_vrotri_d(s, a0, a1, a2); 1973 break; 1974 default: 1975 g_assert_not_reached(); 1976 } 1977 break; 1978 case INDEX_op_bitsel_vec: 1979 /* vbitsel vd, vj, vk, va = bitsel_vec vd, va, vk, vj */ 1980 tcg_out_opc_vbitsel_v(s, a0, a3, a2, a1); 1981 break; 1982 case INDEX_op_dupm_vec: 1983 tcg_out_dupm_vec(s, type, vece, a0, a1, a2); 1984 break; 1985 default: 1986 g_assert_not_reached(); 1987 } 1988} 1989 1990int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type, unsigned vece) 1991{ 1992 switch (opc) { 1993 case INDEX_op_ld_vec: 1994 case INDEX_op_st_vec: 1995 case INDEX_op_dup_vec: 1996 case INDEX_op_dupm_vec: 1997 case INDEX_op_cmp_vec: 1998 case INDEX_op_add_vec: 1999 case INDEX_op_sub_vec: 2000 case INDEX_op_and_vec: 2001 case INDEX_op_andc_vec: 2002 case INDEX_op_or_vec: 2003 case INDEX_op_orc_vec: 2004 case INDEX_op_xor_vec: 2005 case INDEX_op_nor_vec: 2006 case INDEX_op_not_vec: 2007 case INDEX_op_neg_vec: 2008 case INDEX_op_mul_vec: 2009 case INDEX_op_smin_vec: 2010 case INDEX_op_smax_vec: 2011 case INDEX_op_umin_vec: 2012 case INDEX_op_umax_vec: 2013 case INDEX_op_ssadd_vec: 2014 case INDEX_op_usadd_vec: 2015 case INDEX_op_sssub_vec: 2016 case INDEX_op_ussub_vec: 2017 case INDEX_op_shlv_vec: 2018 case INDEX_op_shrv_vec: 2019 case INDEX_op_sarv_vec: 2020 case INDEX_op_bitsel_vec: 2021 return 1; 2022 default: 2023 return 0; 2024 } 2025} 2026 2027void tcg_expand_vec_op(TCGOpcode opc, TCGType type, unsigned vece, 2028 TCGArg a0, ...) 2029{ 2030 g_assert_not_reached(); 2031} 2032 2033static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) 2034{ 2035 switch (op) { 2036 case INDEX_op_goto_ptr: 2037 return C_O0_I1(r); 2038 2039 case INDEX_op_st8_i32: 2040 case INDEX_op_st8_i64: 2041 case INDEX_op_st16_i32: 2042 case INDEX_op_st16_i64: 2043 case INDEX_op_st32_i64: 2044 case INDEX_op_st_i32: 2045 case INDEX_op_st_i64: 2046 case INDEX_op_qemu_st_a32_i32: 2047 case INDEX_op_qemu_st_a64_i32: 2048 case INDEX_op_qemu_st_a32_i64: 2049 case INDEX_op_qemu_st_a64_i64: 2050 return C_O0_I2(rZ, r); 2051 2052 case INDEX_op_qemu_ld_a32_i128: 2053 case INDEX_op_qemu_ld_a64_i128: 2054 return C_O2_I1(r, r, r); 2055 2056 case INDEX_op_qemu_st_a32_i128: 2057 case INDEX_op_qemu_st_a64_i128: 2058 return C_O0_I3(r, r, r); 2059 2060 case INDEX_op_brcond_i32: 2061 case INDEX_op_brcond_i64: 2062 return C_O0_I2(rZ, rZ); 2063 2064 case INDEX_op_ext8s_i32: 2065 case INDEX_op_ext8s_i64: 2066 case INDEX_op_ext8u_i32: 2067 case INDEX_op_ext8u_i64: 2068 case INDEX_op_ext16s_i32: 2069 case INDEX_op_ext16s_i64: 2070 case INDEX_op_ext16u_i32: 2071 case INDEX_op_ext16u_i64: 2072 case INDEX_op_ext32s_i64: 2073 case INDEX_op_ext32u_i64: 2074 case INDEX_op_extu_i32_i64: 2075 case INDEX_op_extrl_i64_i32: 2076 case INDEX_op_extrh_i64_i32: 2077 case INDEX_op_ext_i32_i64: 2078 case INDEX_op_not_i32: 2079 case INDEX_op_not_i64: 2080 case INDEX_op_extract_i32: 2081 case INDEX_op_extract_i64: 2082 case INDEX_op_bswap16_i32: 2083 case INDEX_op_bswap16_i64: 2084 case INDEX_op_bswap32_i32: 2085 case INDEX_op_bswap32_i64: 2086 case INDEX_op_bswap64_i64: 2087 case INDEX_op_ld8s_i32: 2088 case INDEX_op_ld8s_i64: 2089 case INDEX_op_ld8u_i32: 2090 case INDEX_op_ld8u_i64: 2091 case INDEX_op_ld16s_i32: 2092 case INDEX_op_ld16s_i64: 2093 case INDEX_op_ld16u_i32: 2094 case INDEX_op_ld16u_i64: 2095 case INDEX_op_ld32s_i64: 2096 case INDEX_op_ld32u_i64: 2097 case INDEX_op_ld_i32: 2098 case INDEX_op_ld_i64: 2099 case INDEX_op_qemu_ld_a32_i32: 2100 case INDEX_op_qemu_ld_a64_i32: 2101 case INDEX_op_qemu_ld_a32_i64: 2102 case INDEX_op_qemu_ld_a64_i64: 2103 return C_O1_I1(r, r); 2104 2105 case INDEX_op_andc_i32: 2106 case INDEX_op_andc_i64: 2107 case INDEX_op_orc_i32: 2108 case INDEX_op_orc_i64: 2109 /* 2110 * LoongArch insns for these ops don't have reg-imm forms, but we 2111 * can express using andi/ori if ~constant satisfies 2112 * TCG_CT_CONST_U12. 2113 */ 2114 return C_O1_I2(r, r, rC); 2115 2116 case INDEX_op_shl_i32: 2117 case INDEX_op_shl_i64: 2118 case INDEX_op_shr_i32: 2119 case INDEX_op_shr_i64: 2120 case INDEX_op_sar_i32: 2121 case INDEX_op_sar_i64: 2122 case INDEX_op_rotl_i32: 2123 case INDEX_op_rotl_i64: 2124 case INDEX_op_rotr_i32: 2125 case INDEX_op_rotr_i64: 2126 return C_O1_I2(r, r, ri); 2127 2128 case INDEX_op_add_i32: 2129 return C_O1_I2(r, r, ri); 2130 case INDEX_op_add_i64: 2131 return C_O1_I2(r, r, rJ); 2132 2133 case INDEX_op_and_i32: 2134 case INDEX_op_and_i64: 2135 case INDEX_op_nor_i32: 2136 case INDEX_op_nor_i64: 2137 case INDEX_op_or_i32: 2138 case INDEX_op_or_i64: 2139 case INDEX_op_xor_i32: 2140 case INDEX_op_xor_i64: 2141 /* LoongArch reg-imm bitops have their imms ZERO-extended */ 2142 return C_O1_I2(r, r, rU); 2143 2144 case INDEX_op_clz_i32: 2145 case INDEX_op_clz_i64: 2146 case INDEX_op_ctz_i32: 2147 case INDEX_op_ctz_i64: 2148 return C_O1_I2(r, r, rW); 2149 2150 case INDEX_op_deposit_i32: 2151 case INDEX_op_deposit_i64: 2152 /* Must deposit into the same register as input */ 2153 return C_O1_I2(r, 0, rZ); 2154 2155 case INDEX_op_sub_i32: 2156 case INDEX_op_setcond_i32: 2157 return C_O1_I2(r, rZ, ri); 2158 case INDEX_op_sub_i64: 2159 case INDEX_op_setcond_i64: 2160 return C_O1_I2(r, rZ, rJ); 2161 2162 case INDEX_op_mul_i32: 2163 case INDEX_op_mul_i64: 2164 case INDEX_op_mulsh_i32: 2165 case INDEX_op_mulsh_i64: 2166 case INDEX_op_muluh_i32: 2167 case INDEX_op_muluh_i64: 2168 case INDEX_op_div_i32: 2169 case INDEX_op_div_i64: 2170 case INDEX_op_divu_i32: 2171 case INDEX_op_divu_i64: 2172 case INDEX_op_rem_i32: 2173 case INDEX_op_rem_i64: 2174 case INDEX_op_remu_i32: 2175 case INDEX_op_remu_i64: 2176 return C_O1_I2(r, rZ, rZ); 2177 2178 case INDEX_op_movcond_i32: 2179 case INDEX_op_movcond_i64: 2180 return C_O1_I4(r, rZ, rJ, rZ, rZ); 2181 2182 case INDEX_op_ld_vec: 2183 case INDEX_op_dupm_vec: 2184 case INDEX_op_dup_vec: 2185 return C_O1_I1(w, r); 2186 2187 case INDEX_op_st_vec: 2188 return C_O0_I2(w, r); 2189 2190 case INDEX_op_cmp_vec: 2191 return C_O1_I2(w, w, wM); 2192 2193 case INDEX_op_add_vec: 2194 case INDEX_op_sub_vec: 2195 return C_O1_I2(w, w, wA); 2196 2197 case INDEX_op_and_vec: 2198 case INDEX_op_andc_vec: 2199 case INDEX_op_or_vec: 2200 case INDEX_op_orc_vec: 2201 case INDEX_op_xor_vec: 2202 case INDEX_op_nor_vec: 2203 case INDEX_op_mul_vec: 2204 case INDEX_op_smin_vec: 2205 case INDEX_op_smax_vec: 2206 case INDEX_op_umin_vec: 2207 case INDEX_op_umax_vec: 2208 case INDEX_op_ssadd_vec: 2209 case INDEX_op_usadd_vec: 2210 case INDEX_op_sssub_vec: 2211 case INDEX_op_ussub_vec: 2212 case INDEX_op_shlv_vec: 2213 case INDEX_op_shrv_vec: 2214 case INDEX_op_sarv_vec: 2215 case INDEX_op_rotrv_vec: 2216 case INDEX_op_rotlv_vec: 2217 return C_O1_I2(w, w, w); 2218 2219 case INDEX_op_not_vec: 2220 case INDEX_op_neg_vec: 2221 case INDEX_op_shli_vec: 2222 case INDEX_op_shri_vec: 2223 case INDEX_op_sari_vec: 2224 case INDEX_op_rotli_vec: 2225 return C_O1_I1(w, w); 2226 2227 case INDEX_op_bitsel_vec: 2228 return C_O1_I3(w, w, w, w); 2229 2230 default: 2231 g_assert_not_reached(); 2232 } 2233} 2234 2235static const int tcg_target_callee_save_regs[] = { 2236 TCG_REG_S0, /* used for the global env (TCG_AREG0) */ 2237 TCG_REG_S1, 2238 TCG_REG_S2, 2239 TCG_REG_S3, 2240 TCG_REG_S4, 2241 TCG_REG_S5, 2242 TCG_REG_S6, 2243 TCG_REG_S7, 2244 TCG_REG_S8, 2245 TCG_REG_S9, 2246 TCG_REG_RA, /* should be last for ABI compliance */ 2247}; 2248 2249/* Stack frame parameters. */ 2250#define REG_SIZE (TCG_TARGET_REG_BITS / 8) 2251#define SAVE_SIZE ((int)ARRAY_SIZE(tcg_target_callee_save_regs) * REG_SIZE) 2252#define TEMP_SIZE (CPU_TEMP_BUF_NLONGS * (int)sizeof(long)) 2253#define FRAME_SIZE ((TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE + SAVE_SIZE \ 2254 + TCG_TARGET_STACK_ALIGN - 1) \ 2255 & -TCG_TARGET_STACK_ALIGN) 2256#define SAVE_OFS (TCG_STATIC_CALL_ARGS_SIZE + TEMP_SIZE) 2257 2258/* We're expecting to be able to use an immediate for frame allocation. */ 2259QEMU_BUILD_BUG_ON(FRAME_SIZE > 0x7ff); 2260 2261/* Generate global QEMU prologue and epilogue code */ 2262static void tcg_target_qemu_prologue(TCGContext *s) 2263{ 2264 int i; 2265 2266 tcg_set_frame(s, TCG_REG_SP, TCG_STATIC_CALL_ARGS_SIZE, TEMP_SIZE); 2267 2268 /* TB prologue */ 2269 tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, -FRAME_SIZE); 2270 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { 2271 tcg_out_st(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], 2272 TCG_REG_SP, SAVE_OFS + i * REG_SIZE); 2273 } 2274 2275#if !defined(CONFIG_SOFTMMU) 2276 if (USE_GUEST_BASE) { 2277 tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base); 2278 tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG); 2279 } 2280#endif 2281 2282 /* Call generated code */ 2283 tcg_out_mov(s, TCG_TYPE_PTR, TCG_AREG0, tcg_target_call_iarg_regs[0]); 2284 tcg_out_opc_jirl(s, TCG_REG_ZERO, tcg_target_call_iarg_regs[1], 0); 2285 2286 /* Return path for goto_ptr. Set return value to 0 */ 2287 tcg_code_gen_epilogue = tcg_splitwx_to_rx(s->code_ptr); 2288 tcg_out_mov(s, TCG_TYPE_REG, TCG_REG_A0, TCG_REG_ZERO); 2289 2290 /* TB epilogue */ 2291 tb_ret_addr = tcg_splitwx_to_rx(s->code_ptr); 2292 for (i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { 2293 tcg_out_ld(s, TCG_TYPE_REG, tcg_target_callee_save_regs[i], 2294 TCG_REG_SP, SAVE_OFS + i * REG_SIZE); 2295 } 2296 2297 tcg_out_opc_addi_d(s, TCG_REG_SP, TCG_REG_SP, FRAME_SIZE); 2298 tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_RA, 0); 2299} 2300 2301static void tcg_out_tb_start(TCGContext *s) 2302{ 2303 /* nothing to do */ 2304} 2305 2306static void tcg_target_init(TCGContext *s) 2307{ 2308 unsigned long hwcap = qemu_getauxval(AT_HWCAP); 2309 2310 /* Server and desktop class cpus have UAL; embedded cpus do not. */ 2311 if (!(hwcap & HWCAP_LOONGARCH_UAL)) { 2312 error_report("TCG: unaligned access support required; exiting"); 2313 exit(EXIT_FAILURE); 2314 } 2315 2316 if (hwcap & HWCAP_LOONGARCH_LSX) { 2317 use_lsx_instructions = 1; 2318 } 2319 2320 tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS; 2321 tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS; 2322 2323 tcg_target_call_clobber_regs = ALL_GENERAL_REGS; 2324 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S0); 2325 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S1); 2326 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S2); 2327 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S3); 2328 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S4); 2329 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S5); 2330 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S6); 2331 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S7); 2332 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S8); 2333 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_S9); 2334 2335 if (use_lsx_instructions) { 2336 tcg_target_available_regs[TCG_TYPE_V128] = ALL_VECTOR_REGS; 2337 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V24); 2338 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V25); 2339 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V26); 2340 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V27); 2341 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V28); 2342 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V29); 2343 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V30); 2344 tcg_regset_reset_reg(tcg_target_call_clobber_regs, TCG_REG_V31); 2345 } 2346 2347 s->reserved_regs = 0; 2348 tcg_regset_set_reg(s->reserved_regs, TCG_REG_ZERO); 2349 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP0); 2350 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP1); 2351 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TMP2); 2352 tcg_regset_set_reg(s->reserved_regs, TCG_REG_SP); 2353 tcg_regset_set_reg(s->reserved_regs, TCG_REG_TP); 2354 tcg_regset_set_reg(s->reserved_regs, TCG_REG_RESERVED); 2355 tcg_regset_set_reg(s->reserved_regs, TCG_VEC_TMP0); 2356} 2357 2358typedef struct { 2359 DebugFrameHeader h; 2360 uint8_t fde_def_cfa[4]; 2361 uint8_t fde_reg_ofs[ARRAY_SIZE(tcg_target_callee_save_regs) * 2]; 2362} DebugFrame; 2363 2364#define ELF_HOST_MACHINE EM_LOONGARCH 2365 2366static const DebugFrame debug_frame = { 2367 .h.cie.len = sizeof(DebugFrameCIE) - 4, /* length after .len member */ 2368 .h.cie.id = -1, 2369 .h.cie.version = 1, 2370 .h.cie.code_align = 1, 2371 .h.cie.data_align = -(TCG_TARGET_REG_BITS / 8) & 0x7f, /* sleb128 */ 2372 .h.cie.return_column = TCG_REG_RA, 2373 2374 /* Total FDE size does not include the "len" member. */ 2375 .h.fde.len = sizeof(DebugFrame) - offsetof(DebugFrame, h.fde.cie_offset), 2376 2377 .fde_def_cfa = { 2378 12, TCG_REG_SP, /* DW_CFA_def_cfa sp, ... */ 2379 (FRAME_SIZE & 0x7f) | 0x80, /* ... uleb128 FRAME_SIZE */ 2380 (FRAME_SIZE >> 7) 2381 }, 2382 .fde_reg_ofs = { 2383 0x80 + 23, 11, /* DW_CFA_offset, s0, -88 */ 2384 0x80 + 24, 10, /* DW_CFA_offset, s1, -80 */ 2385 0x80 + 25, 9, /* DW_CFA_offset, s2, -72 */ 2386 0x80 + 26, 8, /* DW_CFA_offset, s3, -64 */ 2387 0x80 + 27, 7, /* DW_CFA_offset, s4, -56 */ 2388 0x80 + 28, 6, /* DW_CFA_offset, s5, -48 */ 2389 0x80 + 29, 5, /* DW_CFA_offset, s6, -40 */ 2390 0x80 + 30, 4, /* DW_CFA_offset, s7, -32 */ 2391 0x80 + 31, 3, /* DW_CFA_offset, s8, -24 */ 2392 0x80 + 22, 2, /* DW_CFA_offset, s9, -16 */ 2393 0x80 + 1 , 1, /* DW_CFA_offset, ra, -8 */ 2394 } 2395}; 2396 2397void tcg_register_jit(const void *buf, size_t buf_size) 2398{ 2399 tcg_register_jit_int(buf, buf_size, &debug_frame, sizeof(debug_frame)); 2400} 2401