1 /* 2 * Tiny Code Generator for QEMU 3 * 4 * Copyright (c) 2008 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #ifndef NDEBUG 26 static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { 27 "%rax", 28 "%rcx", 29 "%rdx", 30 "%rbx", 31 "%rsp", 32 "%rbp", 33 "%rsi", 34 "%rdi", 35 "%r8", 36 "%r9", 37 "%r10", 38 "%r11", 39 "%r12", 40 "%r13", 41 "%r14", 42 "%r15", 43 }; 44 #endif 45 46 static const int tcg_target_reg_alloc_order[] = { 47 TCG_REG_RBP, 48 TCG_REG_RBX, 49 TCG_REG_R12, 50 TCG_REG_R13, 51 TCG_REG_R14, 52 TCG_REG_R15, 53 TCG_REG_R10, 54 TCG_REG_R11, 55 TCG_REG_R9, 56 TCG_REG_R8, 57 TCG_REG_RCX, 58 TCG_REG_RDX, 59 TCG_REG_RSI, 60 TCG_REG_RDI, 61 TCG_REG_RAX, 62 }; 63 64 static const int tcg_target_call_iarg_regs[6] = { 65 TCG_REG_RDI, 66 TCG_REG_RSI, 67 TCG_REG_RDX, 68 TCG_REG_RCX, 69 TCG_REG_R8, 70 TCG_REG_R9, 71 }; 72 73 static const int tcg_target_call_oarg_regs[2] = { 74 TCG_REG_RAX, 75 TCG_REG_RDX 76 }; 77 78 static uint8_t *tb_ret_addr; 79 80 static void patch_reloc(uint8_t *code_ptr, int type, 81 tcg_target_long value, tcg_target_long addend) 82 { 83 value += addend; 84 switch(type) { 85 case R_X86_64_32: 86 if (value != (uint32_t)value) 87 tcg_abort(); 88 *(uint32_t *)code_ptr = value; 89 break; 90 case R_X86_64_32S: 91 if (value != (int32_t)value) 92 tcg_abort(); 93 *(uint32_t *)code_ptr = value; 94 break; 95 case R_386_PC32: 96 value -= (long)code_ptr; 97 if (value != (int32_t)value) 98 tcg_abort(); 99 *(uint32_t *)code_ptr = value; 100 break; 101 default: 102 tcg_abort(); 103 } 104 } 105 106 /* maximum number of register used for input function arguments */ 107 static inline int tcg_target_get_call_iarg_regs_count(int flags) 108 { 109 return 6; 110 } 111 112 /* parse target specific constraints */ 113 static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) 114 { 115 const char *ct_str; 116 117 ct_str = *pct_str; 118 switch(ct_str[0]) { 119 case 'a': 120 ct->ct |= TCG_CT_REG; 121 tcg_regset_set_reg(ct->u.regs, TCG_REG_RAX); 122 break; 123 case 'b': 124 ct->ct |= TCG_CT_REG; 125 tcg_regset_set_reg(ct->u.regs, TCG_REG_RBX); 126 break; 127 case 'c': 128 ct->ct |= TCG_CT_REG; 129 tcg_regset_set_reg(ct->u.regs, TCG_REG_RCX); 130 break; 131 case 'd': 132 ct->ct |= TCG_CT_REG; 133 tcg_regset_set_reg(ct->u.regs, TCG_REG_RDX); 134 break; 135 case 'S': 136 ct->ct |= TCG_CT_REG; 137 tcg_regset_set_reg(ct->u.regs, TCG_REG_RSI); 138 break; 139 case 'D': 140 ct->ct |= TCG_CT_REG; 141 tcg_regset_set_reg(ct->u.regs, TCG_REG_RDI); 142 break; 143 case 'q': 144 ct->ct |= TCG_CT_REG; 145 tcg_regset_set32(ct->u.regs, 0, 0xf); 146 break; 147 case 'r': 148 ct->ct |= TCG_CT_REG; 149 tcg_regset_set32(ct->u.regs, 0, 0xffff); 150 break; 151 case 'L': /* qemu_ld/st constraint */ 152 ct->ct |= TCG_CT_REG; 153 tcg_regset_set32(ct->u.regs, 0, 0xffff); 154 tcg_regset_reset_reg(ct->u.regs, TCG_REG_RSI); 155 tcg_regset_reset_reg(ct->u.regs, TCG_REG_RDI); 156 break; 157 case 'e': 158 ct->ct |= TCG_CT_CONST_S32; 159 break; 160 case 'Z': 161 ct->ct |= TCG_CT_CONST_U32; 162 break; 163 default: 164 return -1; 165 } 166 ct_str++; 167 *pct_str = ct_str; 168 return 0; 169 } 170 171 /* test if a constant matches the constraint */ 172 static inline int tcg_target_const_match(tcg_target_long val, 173 const TCGArgConstraint *arg_ct) 174 { 175 int ct; 176 ct = arg_ct->ct; 177 if (ct & TCG_CT_CONST) 178 return 1; 179 else if ((ct & TCG_CT_CONST_S32) && val == (int32_t)val) 180 return 1; 181 else if ((ct & TCG_CT_CONST_U32) && val == (uint32_t)val) 182 return 1; 183 else 184 return 0; 185 } 186 187 #define ARITH_ADD 0 188 #define ARITH_OR 1 189 #define ARITH_ADC 2 190 #define ARITH_SBB 3 191 #define ARITH_AND 4 192 #define ARITH_SUB 5 193 #define ARITH_XOR 6 194 #define ARITH_CMP 7 195 196 #define SHIFT_ROL 0 197 #define SHIFT_ROR 1 198 #define SHIFT_SHL 4 199 #define SHIFT_SHR 5 200 #define SHIFT_SAR 7 201 202 #define JCC_JMP (-1) 203 #define JCC_JO 0x0 204 #define JCC_JNO 0x1 205 #define JCC_JB 0x2 206 #define JCC_JAE 0x3 207 #define JCC_JE 0x4 208 #define JCC_JNE 0x5 209 #define JCC_JBE 0x6 210 #define JCC_JA 0x7 211 #define JCC_JS 0x8 212 #define JCC_JNS 0x9 213 #define JCC_JP 0xa 214 #define JCC_JNP 0xb 215 #define JCC_JL 0xc 216 #define JCC_JGE 0xd 217 #define JCC_JLE 0xe 218 #define JCC_JG 0xf 219 220 #define P_EXT 0x100 /* 0x0f opcode prefix */ 221 #define P_REXW 0x200 /* set rex.w = 1 */ 222 #define P_REXB_R 0x400 /* REG field as byte register */ 223 #define P_REXB_RM 0x800 /* R/M field as byte register */ 224 225 static const uint8_t tcg_cond_to_jcc[10] = { 226 [TCG_COND_EQ] = JCC_JE, 227 [TCG_COND_NE] = JCC_JNE, 228 [TCG_COND_LT] = JCC_JL, 229 [TCG_COND_GE] = JCC_JGE, 230 [TCG_COND_LE] = JCC_JLE, 231 [TCG_COND_GT] = JCC_JG, 232 [TCG_COND_LTU] = JCC_JB, 233 [TCG_COND_GEU] = JCC_JAE, 234 [TCG_COND_LEU] = JCC_JBE, 235 [TCG_COND_GTU] = JCC_JA, 236 }; 237 238 static void tcg_out_opc(TCGContext *s, int opc, int r, int rm, int x) 239 { 240 int rex = 0; 241 242 rex |= (opc & P_REXW) >> 6; /* REX.W */ 243 rex |= (r & 8) >> 1; /* REX.R */ 244 rex |= (x & 8) >> 2; /* REX.X */ 245 rex |= (rm & 8) >> 3; /* REX.B */ 246 247 /* P_REXB_{R,RM} indicates that the given register is the low byte. 248 For %[abcd]l we need no REX prefix, but for %{si,di,bp,sp}l we do, 249 as otherwise the encoding indicates %[abcd]h. Note that the values 250 that are ORed in merely indicate that the REX byte must be present; 251 those bits get discarded in output. */ 252 rex |= opc & (r >= 4 ? P_REXB_R : 0); 253 rex |= opc & (rm >= 4 ? P_REXB_RM : 0); 254 255 if (rex) { 256 tcg_out8(s, (uint8_t)(rex | 0x40)); 257 } 258 if (opc & P_EXT) { 259 tcg_out8(s, 0x0f); 260 } 261 tcg_out8(s, opc & 0xff); 262 } 263 264 static inline void tcg_out_modrm(TCGContext *s, int opc, int r, int rm) 265 { 266 tcg_out_opc(s, opc, r, rm, 0); 267 tcg_out8(s, 0xc0 | ((r & 7) << 3) | (rm & 7)); 268 } 269 270 /* rm < 0 means no register index plus (-rm - 1 immediate bytes) */ 271 static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r, int rm, 272 tcg_target_long offset) 273 { 274 if (rm < 0) { 275 tcg_target_long val; 276 tcg_out_opc(s, opc, r, 0, 0); 277 val = offset - ((tcg_target_long)s->code_ptr + 5 + (-rm - 1)); 278 if (val == (int32_t)val) { 279 /* eip relative */ 280 tcg_out8(s, 0x05 | ((r & 7) << 3)); 281 tcg_out32(s, val); 282 } else if (offset == (int32_t)offset) { 283 tcg_out8(s, 0x04 | ((r & 7) << 3)); 284 tcg_out8(s, 0x25); /* sib */ 285 tcg_out32(s, offset); 286 } else { 287 tcg_abort(); 288 } 289 } else if (offset == 0 && (rm & 7) != TCG_REG_RBP) { 290 tcg_out_opc(s, opc, r, rm, 0); 291 if ((rm & 7) == TCG_REG_RSP) { 292 tcg_out8(s, 0x04 | ((r & 7) << 3)); 293 tcg_out8(s, 0x24); 294 } else { 295 tcg_out8(s, 0x00 | ((r & 7) << 3) | (rm & 7)); 296 } 297 } else if ((int8_t)offset == offset) { 298 tcg_out_opc(s, opc, r, rm, 0); 299 if ((rm & 7) == TCG_REG_RSP) { 300 tcg_out8(s, 0x44 | ((r & 7) << 3)); 301 tcg_out8(s, 0x24); 302 } else { 303 tcg_out8(s, 0x40 | ((r & 7) << 3) | (rm & 7)); 304 } 305 tcg_out8(s, offset); 306 } else { 307 tcg_out_opc(s, opc, r, rm, 0); 308 if ((rm & 7) == TCG_REG_RSP) { 309 tcg_out8(s, 0x84 | ((r & 7) << 3)); 310 tcg_out8(s, 0x24); 311 } else { 312 tcg_out8(s, 0x80 | ((r & 7) << 3) | (rm & 7)); 313 } 314 tcg_out32(s, offset); 315 } 316 } 317 318 #if defined(CONFIG_SOFTMMU) 319 /* XXX: incomplete. index must be different from ESP */ 320 static void tcg_out_modrm_offset2(TCGContext *s, int opc, int r, int rm, 321 int index, int shift, 322 tcg_target_long offset) 323 { 324 int mod; 325 if (rm == -1) 326 tcg_abort(); 327 if (offset == 0 && (rm & 7) != TCG_REG_RBP) { 328 mod = 0; 329 } else if (offset == (int8_t)offset) { 330 mod = 0x40; 331 } else if (offset == (int32_t)offset) { 332 mod = 0x80; 333 } else { 334 tcg_abort(); 335 } 336 if (index == -1) { 337 tcg_out_opc(s, opc, r, rm, 0); 338 if ((rm & 7) == TCG_REG_RSP) { 339 tcg_out8(s, mod | ((r & 7) << 3) | 0x04); 340 tcg_out8(s, 0x04 | (rm & 7)); 341 } else { 342 tcg_out8(s, mod | ((r & 7) << 3) | (rm & 7)); 343 } 344 } else { 345 tcg_out_opc(s, opc, r, rm, index); 346 tcg_out8(s, mod | ((r & 7) << 3) | 0x04); 347 tcg_out8(s, (shift << 6) | ((index & 7) << 3) | (rm & 7)); 348 } 349 if (mod == 0x40) { 350 tcg_out8(s, offset); 351 } else if (mod == 0x80) { 352 tcg_out32(s, offset); 353 } 354 } 355 #endif 356 357 static inline void tcg_out_mov(TCGContext *s, int ret, int arg) 358 { 359 tcg_out_modrm(s, 0x8b | P_REXW, ret, arg); 360 } 361 362 static inline void tcg_out_movi(TCGContext *s, TCGType type, 363 int ret, tcg_target_long arg) 364 { 365 if (arg == 0) { 366 tcg_out_modrm(s, 0x01 | (ARITH_XOR << 3), ret, ret); /* xor r0,r0 */ 367 } else if (arg == (uint32_t)arg || type == TCG_TYPE_I32) { 368 tcg_out_opc(s, 0xb8 + (ret & 7), 0, ret, 0); 369 tcg_out32(s, arg); 370 } else if (arg == (int32_t)arg) { 371 tcg_out_modrm(s, 0xc7 | P_REXW, 0, ret); 372 tcg_out32(s, arg); 373 } else { 374 tcg_out_opc(s, (0xb8 + (ret & 7)) | P_REXW, 0, ret, 0); 375 tcg_out32(s, arg); 376 tcg_out32(s, arg >> 32); 377 } 378 } 379 380 static void tcg_out_goto(TCGContext *s, int call, uint8_t *target) 381 { 382 int32_t disp; 383 384 disp = target - s->code_ptr - 5; 385 if (disp == (target - s->code_ptr - 5)) { 386 tcg_out8(s, call ? 0xe8 : 0xe9); 387 tcg_out32(s, disp); 388 } else { 389 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R10, (tcg_target_long) target); 390 tcg_out_modrm(s, 0xff, call ? 2 : 4, TCG_REG_R10); 391 } 392 } 393 394 static inline void tcg_out_ld(TCGContext *s, TCGType type, int ret, 395 int arg1, tcg_target_long arg2) 396 { 397 if (type == TCG_TYPE_I32) 398 tcg_out_modrm_offset(s, 0x8b, ret, arg1, arg2); /* movl */ 399 else 400 tcg_out_modrm_offset(s, 0x8b | P_REXW, ret, arg1, arg2); /* movq */ 401 } 402 403 static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, 404 int arg1, tcg_target_long arg2) 405 { 406 if (type == TCG_TYPE_I32) 407 tcg_out_modrm_offset(s, 0x89, arg, arg1, arg2); /* movl */ 408 else 409 tcg_out_modrm_offset(s, 0x89 | P_REXW, arg, arg1, arg2); /* movq */ 410 } 411 412 static inline void tgen_arithi32(TCGContext *s, int c, int r0, int32_t val) 413 { 414 if ((c == ARITH_ADD && val == 1) || (c == ARITH_SUB && val == -1)) { 415 /* inc */ 416 tcg_out_modrm(s, 0xff, 0, r0); 417 } else if ((c == ARITH_ADD && val == -1) || (c == ARITH_SUB && val == 1)) { 418 /* dec */ 419 tcg_out_modrm(s, 0xff, 1, r0); 420 } else if (val == (int8_t)val) { 421 tcg_out_modrm(s, 0x83, c, r0); 422 tcg_out8(s, val); 423 } else if (c == ARITH_AND && val == 0xffu) { 424 /* movzbl */ 425 tcg_out_modrm(s, 0xb6 | P_EXT | P_REXB_RM, r0, r0); 426 } else if (c == ARITH_AND && val == 0xffffu) { 427 /* movzwl */ 428 tcg_out_modrm(s, 0xb7 | P_EXT, r0, r0); 429 } else { 430 tcg_out_modrm(s, 0x81, c, r0); 431 tcg_out32(s, val); 432 } 433 } 434 435 static inline void tgen_arithi64(TCGContext *s, int c, int r0, int64_t val) 436 { 437 if ((c == ARITH_ADD && val == 1) || (c == ARITH_SUB && val == -1)) { 438 /* inc */ 439 tcg_out_modrm(s, 0xff | P_REXW, 0, r0); 440 } else if ((c == ARITH_ADD && val == -1) || (c == ARITH_SUB && val == 1)) { 441 /* dec */ 442 tcg_out_modrm(s, 0xff | P_REXW, 1, r0); 443 } else if (c == ARITH_AND && val == 0xffffffffu) { 444 /* 32-bit mov zero extends */ 445 tcg_out_modrm(s, 0x8b, r0, r0); 446 } else if (c == ARITH_AND && val == (uint32_t)val) { 447 /* AND with no high bits set can use a 32-bit operation. */ 448 tgen_arithi32(s, c, r0, (uint32_t)val); 449 } else if (val == (int8_t)val) { 450 tcg_out_modrm(s, 0x83 | P_REXW, c, r0); 451 tcg_out8(s, val); 452 } else if (val == (int32_t)val) { 453 tcg_out_modrm(s, 0x81 | P_REXW, c, r0); 454 tcg_out32(s, val); 455 } else { 456 tcg_abort(); 457 } 458 } 459 460 static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) 461 { 462 if (val != 0) 463 tgen_arithi64(s, ARITH_ADD, reg, val); 464 } 465 466 static void tcg_out_jxx(TCGContext *s, int opc, int label_index) 467 { 468 int32_t val, val1; 469 TCGLabel *l = &s->labels[label_index]; 470 471 if (l->has_value) { 472 val = l->u.value - (tcg_target_long)s->code_ptr; 473 val1 = val - 2; 474 if ((int8_t)val1 == val1) { 475 if (opc == -1) 476 tcg_out8(s, 0xeb); 477 else 478 tcg_out8(s, 0x70 + opc); 479 tcg_out8(s, val1); 480 } else { 481 if (opc == -1) { 482 tcg_out8(s, 0xe9); 483 tcg_out32(s, val - 5); 484 } else { 485 tcg_out8(s, 0x0f); 486 tcg_out8(s, 0x80 + opc); 487 tcg_out32(s, val - 6); 488 } 489 } 490 } else { 491 if (opc == -1) { 492 tcg_out8(s, 0xe9); 493 } else { 494 tcg_out8(s, 0x0f); 495 tcg_out8(s, 0x80 + opc); 496 } 497 tcg_out_reloc(s, s->code_ptr, R_386_PC32, label_index, -4); 498 s->code_ptr += 4; 499 } 500 } 501 502 static void tcg_out_cmp(TCGContext *s, TCGArg arg1, TCGArg arg2, 503 int const_arg2, int rexw) 504 { 505 if (const_arg2) { 506 if (arg2 == 0) { 507 /* test r, r */ 508 tcg_out_modrm(s, 0x85 | rexw, arg1, arg1); 509 } else { 510 if (rexw) { 511 tgen_arithi64(s, ARITH_CMP, arg1, arg2); 512 } else { 513 tgen_arithi32(s, ARITH_CMP, arg1, arg2); 514 } 515 } 516 } else { 517 tcg_out_modrm(s, 0x01 | (ARITH_CMP << 3) | rexw, arg2, arg1); 518 } 519 } 520 521 static void tcg_out_brcond(TCGContext *s, int cond, 522 TCGArg arg1, TCGArg arg2, int const_arg2, 523 int label_index, int rexw) 524 { 525 tcg_out_cmp(s, arg1, arg2, const_arg2, rexw); 526 tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index); 527 } 528 529 static void tcg_out_setcond(TCGContext *s, int cond, TCGArg dest, 530 TCGArg arg1, TCGArg arg2, int const_arg2, int rexw) 531 { 532 tcg_out_cmp(s, arg1, arg2, const_arg2, rexw); 533 /* setcc */ 534 tcg_out_modrm(s, 0x90 | tcg_cond_to_jcc[cond] | P_EXT | P_REXB_RM, 0, dest); 535 tgen_arithi32(s, ARITH_AND, dest, 0xff); 536 } 537 538 #if defined(CONFIG_SOFTMMU) 539 540 #include "../../softmmu_defs.h" 541 542 static void *qemu_ld_helpers[4] = { 543 __ldb_mmu, 544 __ldw_mmu, 545 __ldl_mmu, 546 __ldq_mmu, 547 }; 548 549 static void *qemu_st_helpers[4] = { 550 __stb_mmu, 551 __stw_mmu, 552 __stl_mmu, 553 __stq_mmu, 554 }; 555 #endif 556 557 static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, 558 int opc) 559 { 560 int addr_reg, data_reg, r0, r1, mem_index, s_bits, bswap, rexw; 561 int32_t offset; 562 #if defined(CONFIG_SOFTMMU) 563 uint8_t *label1_ptr, *label2_ptr; 564 #endif 565 566 data_reg = *args++; 567 addr_reg = *args++; 568 mem_index = *args; 569 s_bits = opc & 3; 570 571 r0 = TCG_REG_RDI; 572 r1 = TCG_REG_RSI; 573 574 #if TARGET_LONG_BITS == 32 575 rexw = 0; 576 #else 577 rexw = P_REXW; 578 #endif 579 #if defined(CONFIG_SOFTMMU) 580 /* mov */ 581 tcg_out_modrm(s, 0x8b | rexw, r1, addr_reg); 582 583 /* mov */ 584 tcg_out_modrm(s, 0x8b | rexw, r0, addr_reg); 585 586 tcg_out_modrm(s, 0xc1 | rexw, 5, r1); /* shr $x, r1 */ 587 tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); 588 589 tcg_out_modrm(s, 0x81 | rexw, 4, r0); /* andl $x, r0 */ 590 tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); 591 592 tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ 593 tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); 594 595 /* lea offset(r1, env), r1 */ 596 tcg_out_modrm_offset2(s, 0x8d | P_REXW, r1, r1, TCG_AREG0, 0, 597 offsetof(CPUState, tlb_table[mem_index][0].addr_read)); 598 599 /* cmp 0(r1), r0 */ 600 tcg_out_modrm_offset(s, 0x3b | rexw, r0, r1, 0); 601 602 /* mov */ 603 tcg_out_modrm(s, 0x8b | rexw, r0, addr_reg); 604 605 /* je label1 */ 606 tcg_out8(s, 0x70 + JCC_JE); 607 label1_ptr = s->code_ptr; 608 s->code_ptr++; 609 610 /* XXX: move that code at the end of the TB */ 611 tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_RSI, mem_index); 612 tcg_out_goto(s, 1, qemu_ld_helpers[s_bits]); 613 614 switch(opc) { 615 case 0 | 4: 616 /* movsbq */ 617 tcg_out_modrm(s, 0xbe | P_EXT | P_REXW, data_reg, TCG_REG_RAX); 618 break; 619 case 1 | 4: 620 /* movswq */ 621 tcg_out_modrm(s, 0xbf | P_EXT | P_REXW, data_reg, TCG_REG_RAX); 622 break; 623 case 2 | 4: 624 /* movslq */ 625 tcg_out_modrm(s, 0x63 | P_REXW, data_reg, TCG_REG_RAX); 626 break; 627 case 0: 628 /* movzbq */ 629 tcg_out_modrm(s, 0xb6 | P_EXT | P_REXW, data_reg, TCG_REG_RAX); 630 break; 631 case 1: 632 /* movzwq */ 633 tcg_out_modrm(s, 0xb7 | P_EXT | P_REXW, data_reg, TCG_REG_RAX); 634 break; 635 case 2: 636 default: 637 /* movl */ 638 tcg_out_modrm(s, 0x8b, data_reg, TCG_REG_RAX); 639 break; 640 case 3: 641 tcg_out_mov(s, data_reg, TCG_REG_RAX); 642 break; 643 } 644 645 /* jmp label2 */ 646 tcg_out8(s, 0xeb); 647 label2_ptr = s->code_ptr; 648 s->code_ptr++; 649 650 /* label1: */ 651 *label1_ptr = s->code_ptr - label1_ptr - 1; 652 653 /* add x(r1), r0 */ 654 tcg_out_modrm_offset(s, 0x03 | P_REXW, r0, r1, offsetof(CPUTLBEntry, addend) - 655 offsetof(CPUTLBEntry, addr_read)); 656 offset = 0; 657 #else 658 if (GUEST_BASE == (int32_t)GUEST_BASE) { 659 r0 = addr_reg; 660 offset = GUEST_BASE; 661 } else { 662 offset = 0; 663 /* movq $GUEST_BASE, r0 */ 664 tcg_out_opc(s, (0xb8 + (r0 & 7)) | P_REXW, 0, r0, 0); 665 tcg_out32(s, GUEST_BASE); 666 tcg_out32(s, GUEST_BASE >> 32); 667 /* addq addr_reg, r0 */ 668 tcg_out_modrm(s, 0x01 | P_REXW, addr_reg, r0); 669 } 670 #endif 671 672 #ifdef TARGET_WORDS_BIGENDIAN 673 bswap = 1; 674 #else 675 bswap = 0; 676 #endif 677 switch(opc) { 678 case 0: 679 /* movzbl */ 680 tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, offset); 681 break; 682 case 0 | 4: 683 /* movsbX */ 684 tcg_out_modrm_offset(s, 0xbe | P_EXT | rexw, data_reg, r0, offset); 685 break; 686 case 1: 687 /* movzwl */ 688 tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, offset); 689 if (bswap) { 690 /* rolw $8, data_reg */ 691 tcg_out8(s, 0x66); 692 tcg_out_modrm(s, 0xc1, 0, data_reg); 693 tcg_out8(s, 8); 694 } 695 break; 696 case 1 | 4: 697 if (bswap) { 698 /* movzwl */ 699 tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, offset); 700 /* rolw $8, data_reg */ 701 tcg_out8(s, 0x66); 702 tcg_out_modrm(s, 0xc1, 0, data_reg); 703 tcg_out8(s, 8); 704 705 /* movswX data_reg, data_reg */ 706 tcg_out_modrm(s, 0xbf | P_EXT | rexw, data_reg, data_reg); 707 } else { 708 /* movswX */ 709 tcg_out_modrm_offset(s, 0xbf | P_EXT | rexw, data_reg, r0, offset); 710 } 711 break; 712 case 2: 713 /* movl (r0), data_reg */ 714 tcg_out_modrm_offset(s, 0x8b, data_reg, r0, offset); 715 if (bswap) { 716 /* bswap */ 717 tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT, 0, data_reg, 0); 718 } 719 break; 720 case 2 | 4: 721 if (bswap) { 722 /* movl (r0), data_reg */ 723 tcg_out_modrm_offset(s, 0x8b, data_reg, r0, offset); 724 /* bswap */ 725 tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT, 0, data_reg, 0); 726 /* movslq */ 727 tcg_out_modrm(s, 0x63 | P_REXW, data_reg, data_reg); 728 } else { 729 /* movslq */ 730 tcg_out_modrm_offset(s, 0x63 | P_REXW, data_reg, r0, offset); 731 } 732 break; 733 case 3: 734 /* movq (r0), data_reg */ 735 tcg_out_modrm_offset(s, 0x8b | P_REXW, data_reg, r0, offset); 736 if (bswap) { 737 /* bswap */ 738 tcg_out_opc(s, (0xc8 + (data_reg & 7)) | P_EXT | P_REXW, 0, data_reg, 0); 739 } 740 break; 741 default: 742 tcg_abort(); 743 } 744 745 #if defined(CONFIG_SOFTMMU) 746 /* label2: */ 747 *label2_ptr = s->code_ptr - label2_ptr - 1; 748 #endif 749 } 750 751 static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, 752 int opc) 753 { 754 int addr_reg, data_reg, r0, r1, mem_index, s_bits, bswap, rexw; 755 int32_t offset; 756 #if defined(CONFIG_SOFTMMU) 757 uint8_t *label1_ptr, *label2_ptr; 758 #endif 759 760 data_reg = *args++; 761 addr_reg = *args++; 762 mem_index = *args; 763 764 s_bits = opc; 765 766 r0 = TCG_REG_RDI; 767 r1 = TCG_REG_RSI; 768 769 #if TARGET_LONG_BITS == 32 770 rexw = 0; 771 #else 772 rexw = P_REXW; 773 #endif 774 #if defined(CONFIG_SOFTMMU) 775 /* mov */ 776 tcg_out_modrm(s, 0x8b | rexw, r1, addr_reg); 777 778 /* mov */ 779 tcg_out_modrm(s, 0x8b | rexw, r0, addr_reg); 780 781 tcg_out_modrm(s, 0xc1 | rexw, 5, r1); /* shr $x, r1 */ 782 tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); 783 784 tcg_out_modrm(s, 0x81 | rexw, 4, r0); /* andl $x, r0 */ 785 tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); 786 787 tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ 788 tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); 789 790 /* lea offset(r1, env), r1 */ 791 tcg_out_modrm_offset2(s, 0x8d | P_REXW, r1, r1, TCG_AREG0, 0, 792 offsetof(CPUState, tlb_table[mem_index][0].addr_write)); 793 794 /* cmp 0(r1), r0 */ 795 tcg_out_modrm_offset(s, 0x3b | rexw, r0, r1, 0); 796 797 /* mov */ 798 tcg_out_modrm(s, 0x8b | rexw, r0, addr_reg); 799 800 /* je label1 */ 801 tcg_out8(s, 0x70 + JCC_JE); 802 label1_ptr = s->code_ptr; 803 s->code_ptr++; 804 805 /* XXX: move that code at the end of the TB */ 806 switch(opc) { 807 case 0: 808 /* movzbl */ 809 tcg_out_modrm(s, 0xb6 | P_EXT | P_REXB_RM, TCG_REG_RSI, data_reg); 810 break; 811 case 1: 812 /* movzwl */ 813 tcg_out_modrm(s, 0xb7 | P_EXT, TCG_REG_RSI, data_reg); 814 break; 815 case 2: 816 /* movl */ 817 tcg_out_modrm(s, 0x8b, TCG_REG_RSI, data_reg); 818 break; 819 default: 820 case 3: 821 tcg_out_mov(s, TCG_REG_RSI, data_reg); 822 break; 823 } 824 tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_RDX, mem_index); 825 tcg_out_goto(s, 1, qemu_st_helpers[s_bits]); 826 827 /* jmp label2 */ 828 tcg_out8(s, 0xeb); 829 label2_ptr = s->code_ptr; 830 s->code_ptr++; 831 832 /* label1: */ 833 *label1_ptr = s->code_ptr - label1_ptr - 1; 834 835 /* add x(r1), r0 */ 836 tcg_out_modrm_offset(s, 0x03 | P_REXW, r0, r1, offsetof(CPUTLBEntry, addend) - 837 offsetof(CPUTLBEntry, addr_write)); 838 offset = 0; 839 #else 840 if (GUEST_BASE == (int32_t)GUEST_BASE) { 841 r0 = addr_reg; 842 offset = GUEST_BASE; 843 } else { 844 offset = 0; 845 /* movq $GUEST_BASE, r0 */ 846 tcg_out_opc(s, (0xb8 + (r0 & 7)) | P_REXW, 0, r0, 0); 847 tcg_out32(s, GUEST_BASE); 848 tcg_out32(s, GUEST_BASE >> 32); 849 /* addq addr_reg, r0 */ 850 tcg_out_modrm(s, 0x01 | P_REXW, addr_reg, r0); 851 } 852 #endif 853 854 #ifdef TARGET_WORDS_BIGENDIAN 855 bswap = 1; 856 #else 857 bswap = 0; 858 #endif 859 switch(opc) { 860 case 0: 861 /* movb */ 862 tcg_out_modrm_offset(s, 0x88 | P_REXB_R, data_reg, r0, offset); 863 break; 864 case 1: 865 if (bswap) { 866 tcg_out_modrm(s, 0x8b, r1, data_reg); /* movl */ 867 tcg_out8(s, 0x66); /* rolw $8, %ecx */ 868 tcg_out_modrm(s, 0xc1, 0, r1); 869 tcg_out8(s, 8); 870 data_reg = r1; 871 } 872 /* movw */ 873 tcg_out8(s, 0x66); 874 tcg_out_modrm_offset(s, 0x89, data_reg, r0, offset); 875 break; 876 case 2: 877 if (bswap) { 878 tcg_out_modrm(s, 0x8b, r1, data_reg); /* movl */ 879 /* bswap data_reg */ 880 tcg_out_opc(s, (0xc8 + r1) | P_EXT, 0, r1, 0); 881 data_reg = r1; 882 } 883 /* movl */ 884 tcg_out_modrm_offset(s, 0x89, data_reg, r0, offset); 885 break; 886 case 3: 887 if (bswap) { 888 tcg_out_mov(s, r1, data_reg); 889 /* bswap data_reg */ 890 tcg_out_opc(s, (0xc8 + r1) | P_EXT | P_REXW, 0, r1, 0); 891 data_reg = r1; 892 } 893 /* movq */ 894 tcg_out_modrm_offset(s, 0x89 | P_REXW, data_reg, r0, offset); 895 break; 896 default: 897 tcg_abort(); 898 } 899 900 #if defined(CONFIG_SOFTMMU) 901 /* label2: */ 902 *label2_ptr = s->code_ptr - label2_ptr - 1; 903 #endif 904 } 905 906 static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, 907 const int *const_args) 908 { 909 int c; 910 911 switch(opc) { 912 case INDEX_op_exit_tb: 913 tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RAX, args[0]); 914 tcg_out_goto(s, 0, tb_ret_addr); 915 break; 916 case INDEX_op_goto_tb: 917 if (s->tb_jmp_offset) { 918 /* direct jump method */ 919 tcg_out8(s, 0xe9); /* jmp im */ 920 s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; 921 tcg_out32(s, 0); 922 } else { 923 /* indirect jump method */ 924 /* jmp Ev */ 925 tcg_out_modrm_offset(s, 0xff, 4, -1, 926 (tcg_target_long)(s->tb_next + 927 args[0])); 928 } 929 s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; 930 break; 931 case INDEX_op_call: 932 if (const_args[0]) { 933 tcg_out_goto(s, 1, (void *) args[0]); 934 } else { 935 tcg_out_modrm(s, 0xff, 2, args[0]); 936 } 937 break; 938 case INDEX_op_jmp: 939 if (const_args[0]) { 940 tcg_out_goto(s, 0, (void *) args[0]); 941 } else { 942 tcg_out_modrm(s, 0xff, 4, args[0]); 943 } 944 break; 945 case INDEX_op_br: 946 tcg_out_jxx(s, JCC_JMP, args[0]); 947 break; 948 case INDEX_op_movi_i32: 949 tcg_out_movi(s, TCG_TYPE_I32, args[0], (uint32_t)args[1]); 950 break; 951 case INDEX_op_movi_i64: 952 tcg_out_movi(s, TCG_TYPE_I64, args[0], args[1]); 953 break; 954 case INDEX_op_ld8u_i32: 955 case INDEX_op_ld8u_i64: 956 /* movzbl */ 957 tcg_out_modrm_offset(s, 0xb6 | P_EXT, args[0], args[1], args[2]); 958 break; 959 case INDEX_op_ld8s_i32: 960 /* movsbl */ 961 tcg_out_modrm_offset(s, 0xbe | P_EXT, args[0], args[1], args[2]); 962 break; 963 case INDEX_op_ld8s_i64: 964 /* movsbq */ 965 tcg_out_modrm_offset(s, 0xbe | P_EXT | P_REXW, args[0], args[1], args[2]); 966 break; 967 case INDEX_op_ld16u_i32: 968 case INDEX_op_ld16u_i64: 969 /* movzwl */ 970 tcg_out_modrm_offset(s, 0xb7 | P_EXT, args[0], args[1], args[2]); 971 break; 972 case INDEX_op_ld16s_i32: 973 /* movswl */ 974 tcg_out_modrm_offset(s, 0xbf | P_EXT, args[0], args[1], args[2]); 975 break; 976 case INDEX_op_ld16s_i64: 977 /* movswq */ 978 tcg_out_modrm_offset(s, 0xbf | P_EXT | P_REXW, args[0], args[1], args[2]); 979 break; 980 case INDEX_op_ld_i32: 981 case INDEX_op_ld32u_i64: 982 /* movl */ 983 tcg_out_modrm_offset(s, 0x8b, args[0], args[1], args[2]); 984 break; 985 case INDEX_op_ld32s_i64: 986 /* movslq */ 987 tcg_out_modrm_offset(s, 0x63 | P_REXW, args[0], args[1], args[2]); 988 break; 989 case INDEX_op_ld_i64: 990 /* movq */ 991 tcg_out_modrm_offset(s, 0x8b | P_REXW, args[0], args[1], args[2]); 992 break; 993 994 case INDEX_op_st8_i32: 995 case INDEX_op_st8_i64: 996 /* movb */ 997 tcg_out_modrm_offset(s, 0x88 | P_REXB_R, args[0], args[1], args[2]); 998 break; 999 case INDEX_op_st16_i32: 1000 case INDEX_op_st16_i64: 1001 /* movw */ 1002 tcg_out8(s, 0x66); 1003 tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]); 1004 break; 1005 case INDEX_op_st_i32: 1006 case INDEX_op_st32_i64: 1007 /* movl */ 1008 tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]); 1009 break; 1010 case INDEX_op_st_i64: 1011 /* movq */ 1012 tcg_out_modrm_offset(s, 0x89 | P_REXW, args[0], args[1], args[2]); 1013 break; 1014 1015 case INDEX_op_sub_i32: 1016 c = ARITH_SUB; 1017 goto gen_arith32; 1018 case INDEX_op_and_i32: 1019 c = ARITH_AND; 1020 goto gen_arith32; 1021 case INDEX_op_or_i32: 1022 c = ARITH_OR; 1023 goto gen_arith32; 1024 case INDEX_op_xor_i32: 1025 c = ARITH_XOR; 1026 goto gen_arith32; 1027 case INDEX_op_add_i32: 1028 c = ARITH_ADD; 1029 gen_arith32: 1030 if (const_args[2]) { 1031 tgen_arithi32(s, c, args[0], args[2]); 1032 } else { 1033 tcg_out_modrm(s, 0x01 | (c << 3), args[2], args[0]); 1034 } 1035 break; 1036 1037 case INDEX_op_sub_i64: 1038 c = ARITH_SUB; 1039 goto gen_arith64; 1040 case INDEX_op_and_i64: 1041 c = ARITH_AND; 1042 goto gen_arith64; 1043 case INDEX_op_or_i64: 1044 c = ARITH_OR; 1045 goto gen_arith64; 1046 case INDEX_op_xor_i64: 1047 c = ARITH_XOR; 1048 goto gen_arith64; 1049 case INDEX_op_add_i64: 1050 c = ARITH_ADD; 1051 gen_arith64: 1052 if (const_args[2]) { 1053 tgen_arithi64(s, c, args[0], args[2]); 1054 } else { 1055 tcg_out_modrm(s, 0x01 | (c << 3) | P_REXW, args[2], args[0]); 1056 } 1057 break; 1058 1059 case INDEX_op_mul_i32: 1060 if (const_args[2]) { 1061 int32_t val; 1062 val = args[2]; 1063 if (val == (int8_t)val) { 1064 tcg_out_modrm(s, 0x6b, args[0], args[0]); 1065 tcg_out8(s, val); 1066 } else { 1067 tcg_out_modrm(s, 0x69, args[0], args[0]); 1068 tcg_out32(s, val); 1069 } 1070 } else { 1071 tcg_out_modrm(s, 0xaf | P_EXT, args[0], args[2]); 1072 } 1073 break; 1074 case INDEX_op_mul_i64: 1075 if (const_args[2]) { 1076 int32_t val; 1077 val = args[2]; 1078 if (val == (int8_t)val) { 1079 tcg_out_modrm(s, 0x6b | P_REXW, args[0], args[0]); 1080 tcg_out8(s, val); 1081 } else { 1082 tcg_out_modrm(s, 0x69 | P_REXW, args[0], args[0]); 1083 tcg_out32(s, val); 1084 } 1085 } else { 1086 tcg_out_modrm(s, 0xaf | P_EXT | P_REXW, args[0], args[2]); 1087 } 1088 break; 1089 case INDEX_op_div2_i32: 1090 tcg_out_modrm(s, 0xf7, 7, args[4]); 1091 break; 1092 case INDEX_op_divu2_i32: 1093 tcg_out_modrm(s, 0xf7, 6, args[4]); 1094 break; 1095 case INDEX_op_div2_i64: 1096 tcg_out_modrm(s, 0xf7 | P_REXW, 7, args[4]); 1097 break; 1098 case INDEX_op_divu2_i64: 1099 tcg_out_modrm(s, 0xf7 | P_REXW, 6, args[4]); 1100 break; 1101 1102 case INDEX_op_shl_i32: 1103 c = SHIFT_SHL; 1104 gen_shift32: 1105 if (const_args[2]) { 1106 if (args[2] == 1) { 1107 tcg_out_modrm(s, 0xd1, c, args[0]); 1108 } else { 1109 tcg_out_modrm(s, 0xc1, c, args[0]); 1110 tcg_out8(s, args[2]); 1111 } 1112 } else { 1113 tcg_out_modrm(s, 0xd3, c, args[0]); 1114 } 1115 break; 1116 case INDEX_op_shr_i32: 1117 c = SHIFT_SHR; 1118 goto gen_shift32; 1119 case INDEX_op_sar_i32: 1120 c = SHIFT_SAR; 1121 goto gen_shift32; 1122 case INDEX_op_rotl_i32: 1123 c = SHIFT_ROL; 1124 goto gen_shift32; 1125 case INDEX_op_rotr_i32: 1126 c = SHIFT_ROR; 1127 goto gen_shift32; 1128 1129 case INDEX_op_shl_i64: 1130 c = SHIFT_SHL; 1131 gen_shift64: 1132 if (const_args[2]) { 1133 if (args[2] == 1) { 1134 tcg_out_modrm(s, 0xd1 | P_REXW, c, args[0]); 1135 } else { 1136 tcg_out_modrm(s, 0xc1 | P_REXW, c, args[0]); 1137 tcg_out8(s, args[2]); 1138 } 1139 } else { 1140 tcg_out_modrm(s, 0xd3 | P_REXW, c, args[0]); 1141 } 1142 break; 1143 case INDEX_op_shr_i64: 1144 c = SHIFT_SHR; 1145 goto gen_shift64; 1146 case INDEX_op_sar_i64: 1147 c = SHIFT_SAR; 1148 goto gen_shift64; 1149 case INDEX_op_rotl_i64: 1150 c = SHIFT_ROL; 1151 goto gen_shift64; 1152 case INDEX_op_rotr_i64: 1153 c = SHIFT_ROR; 1154 goto gen_shift64; 1155 1156 case INDEX_op_brcond_i32: 1157 tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], 1158 args[3], 0); 1159 break; 1160 case INDEX_op_brcond_i64: 1161 tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], 1162 args[3], P_REXW); 1163 break; 1164 1165 case INDEX_op_bswap16_i32: 1166 case INDEX_op_bswap16_i64: 1167 tcg_out8(s, 0x66); 1168 tcg_out_modrm(s, 0xc1, SHIFT_ROL, args[0]); 1169 tcg_out8(s, 8); 1170 break; 1171 case INDEX_op_bswap32_i32: 1172 case INDEX_op_bswap32_i64: 1173 tcg_out_opc(s, (0xc8 + (args[0] & 7)) | P_EXT, 0, args[0], 0); 1174 break; 1175 case INDEX_op_bswap64_i64: 1176 tcg_out_opc(s, (0xc8 + (args[0] & 7)) | P_EXT | P_REXW, 0, args[0], 0); 1177 break; 1178 1179 case INDEX_op_neg_i32: 1180 tcg_out_modrm(s, 0xf7, 3, args[0]); 1181 break; 1182 case INDEX_op_neg_i64: 1183 tcg_out_modrm(s, 0xf7 | P_REXW, 3, args[0]); 1184 break; 1185 1186 case INDEX_op_not_i32: 1187 tcg_out_modrm(s, 0xf7, 2, args[0]); 1188 break; 1189 case INDEX_op_not_i64: 1190 tcg_out_modrm(s, 0xf7 | P_REXW, 2, args[0]); 1191 break; 1192 1193 case INDEX_op_ext8s_i32: 1194 tcg_out_modrm(s, 0xbe | P_EXT | P_REXB_RM, args[0], args[1]); 1195 break; 1196 case INDEX_op_ext16s_i32: 1197 tcg_out_modrm(s, 0xbf | P_EXT, args[0], args[1]); 1198 break; 1199 case INDEX_op_ext8s_i64: 1200 tcg_out_modrm(s, 0xbe | P_EXT | P_REXW, args[0], args[1]); 1201 break; 1202 case INDEX_op_ext16s_i64: 1203 tcg_out_modrm(s, 0xbf | P_EXT | P_REXW, args[0], args[1]); 1204 break; 1205 case INDEX_op_ext32s_i64: 1206 tcg_out_modrm(s, 0x63 | P_REXW, args[0], args[1]); 1207 break; 1208 case INDEX_op_ext8u_i32: 1209 case INDEX_op_ext8u_i64: 1210 tcg_out_modrm(s, 0xb6 | P_EXT | P_REXB_RM, args[0], args[1]); 1211 break; 1212 case INDEX_op_ext16u_i32: 1213 case INDEX_op_ext16u_i64: 1214 tcg_out_modrm(s, 0xb7 | P_EXT, args[0], args[1]); 1215 break; 1216 case INDEX_op_ext32u_i64: 1217 tcg_out_modrm(s, 0x8b, args[0], args[1]); 1218 break; 1219 1220 case INDEX_op_setcond_i32: 1221 tcg_out_setcond(s, args[3], args[0], args[1], args[2], 1222 const_args[2], 0); 1223 break; 1224 case INDEX_op_setcond_i64: 1225 tcg_out_setcond(s, args[3], args[0], args[1], args[2], 1226 const_args[2], P_REXW); 1227 break; 1228 1229 case INDEX_op_qemu_ld8u: 1230 tcg_out_qemu_ld(s, args, 0); 1231 break; 1232 case INDEX_op_qemu_ld8s: 1233 tcg_out_qemu_ld(s, args, 0 | 4); 1234 break; 1235 case INDEX_op_qemu_ld16u: 1236 tcg_out_qemu_ld(s, args, 1); 1237 break; 1238 case INDEX_op_qemu_ld16s: 1239 tcg_out_qemu_ld(s, args, 1 | 4); 1240 break; 1241 case INDEX_op_qemu_ld32u: 1242 tcg_out_qemu_ld(s, args, 2); 1243 break; 1244 case INDEX_op_qemu_ld32s: 1245 tcg_out_qemu_ld(s, args, 2 | 4); 1246 break; 1247 case INDEX_op_qemu_ld64: 1248 tcg_out_qemu_ld(s, args, 3); 1249 break; 1250 1251 case INDEX_op_qemu_st8: 1252 tcg_out_qemu_st(s, args, 0); 1253 break; 1254 case INDEX_op_qemu_st16: 1255 tcg_out_qemu_st(s, args, 1); 1256 break; 1257 case INDEX_op_qemu_st32: 1258 tcg_out_qemu_st(s, args, 2); 1259 break; 1260 case INDEX_op_qemu_st64: 1261 tcg_out_qemu_st(s, args, 3); 1262 break; 1263 1264 default: 1265 tcg_abort(); 1266 } 1267 } 1268 1269 static int tcg_target_callee_save_regs[] = { 1270 TCG_REG_RBP, 1271 TCG_REG_RBX, 1272 TCG_REG_R12, 1273 TCG_REG_R13, 1274 /* TCG_REG_R14, */ /* currently used for the global env, so no 1275 need to save */ 1276 TCG_REG_R15, 1277 }; 1278 1279 static inline void tcg_out_push(TCGContext *s, int reg) 1280 { 1281 tcg_out_opc(s, (0x50 + (reg & 7)), 0, reg, 0); 1282 } 1283 1284 static inline void tcg_out_pop(TCGContext *s, int reg) 1285 { 1286 tcg_out_opc(s, (0x58 + (reg & 7)), 0, reg, 0); 1287 } 1288 1289 /* Generate global QEMU prologue and epilogue code */ 1290 void tcg_target_qemu_prologue(TCGContext *s) 1291 { 1292 int i, frame_size, push_size, stack_addend; 1293 1294 /* TB prologue */ 1295 /* save all callee saved registers */ 1296 for(i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { 1297 tcg_out_push(s, tcg_target_callee_save_regs[i]); 1298 1299 } 1300 /* reserve some stack space */ 1301 push_size = 8 + ARRAY_SIZE(tcg_target_callee_save_regs) * 8; 1302 frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE; 1303 frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) & 1304 ~(TCG_TARGET_STACK_ALIGN - 1); 1305 stack_addend = frame_size - push_size; 1306 tcg_out_addi(s, TCG_REG_RSP, -stack_addend); 1307 1308 tcg_out_modrm(s, 0xff, 4, TCG_REG_RDI); /* jmp *%rdi */ 1309 1310 /* TB epilogue */ 1311 tb_ret_addr = s->code_ptr; 1312 tcg_out_addi(s, TCG_REG_RSP, stack_addend); 1313 for(i = ARRAY_SIZE(tcg_target_callee_save_regs) - 1; i >= 0; i--) { 1314 tcg_out_pop(s, tcg_target_callee_save_regs[i]); 1315 } 1316 tcg_out8(s, 0xc3); /* ret */ 1317 } 1318 1319 static const TCGTargetOpDef x86_64_op_defs[] = { 1320 { INDEX_op_exit_tb, { } }, 1321 { INDEX_op_goto_tb, { } }, 1322 { INDEX_op_call, { "ri" } }, /* XXX: might need a specific constant constraint */ 1323 { INDEX_op_jmp, { "ri" } }, /* XXX: might need a specific constant constraint */ 1324 { INDEX_op_br, { } }, 1325 1326 { INDEX_op_mov_i32, { "r", "r" } }, 1327 { INDEX_op_movi_i32, { "r" } }, 1328 { INDEX_op_ld8u_i32, { "r", "r" } }, 1329 { INDEX_op_ld8s_i32, { "r", "r" } }, 1330 { INDEX_op_ld16u_i32, { "r", "r" } }, 1331 { INDEX_op_ld16s_i32, { "r", "r" } }, 1332 { INDEX_op_ld_i32, { "r", "r" } }, 1333 { INDEX_op_st8_i32, { "r", "r" } }, 1334 { INDEX_op_st16_i32, { "r", "r" } }, 1335 { INDEX_op_st_i32, { "r", "r" } }, 1336 1337 { INDEX_op_add_i32, { "r", "0", "ri" } }, 1338 { INDEX_op_mul_i32, { "r", "0", "ri" } }, 1339 { INDEX_op_div2_i32, { "a", "d", "0", "1", "r" } }, 1340 { INDEX_op_divu2_i32, { "a", "d", "0", "1", "r" } }, 1341 { INDEX_op_sub_i32, { "r", "0", "ri" } }, 1342 { INDEX_op_and_i32, { "r", "0", "ri" } }, 1343 { INDEX_op_or_i32, { "r", "0", "ri" } }, 1344 { INDEX_op_xor_i32, { "r", "0", "ri" } }, 1345 1346 { INDEX_op_shl_i32, { "r", "0", "ci" } }, 1347 { INDEX_op_shr_i32, { "r", "0", "ci" } }, 1348 { INDEX_op_sar_i32, { "r", "0", "ci" } }, 1349 { INDEX_op_rotl_i32, { "r", "0", "ci" } }, 1350 { INDEX_op_rotr_i32, { "r", "0", "ci" } }, 1351 1352 { INDEX_op_brcond_i32, { "r", "ri" } }, 1353 1354 { INDEX_op_mov_i64, { "r", "r" } }, 1355 { INDEX_op_movi_i64, { "r" } }, 1356 { INDEX_op_ld8u_i64, { "r", "r" } }, 1357 { INDEX_op_ld8s_i64, { "r", "r" } }, 1358 { INDEX_op_ld16u_i64, { "r", "r" } }, 1359 { INDEX_op_ld16s_i64, { "r", "r" } }, 1360 { INDEX_op_ld32u_i64, { "r", "r" } }, 1361 { INDEX_op_ld32s_i64, { "r", "r" } }, 1362 { INDEX_op_ld_i64, { "r", "r" } }, 1363 { INDEX_op_st8_i64, { "r", "r" } }, 1364 { INDEX_op_st16_i64, { "r", "r" } }, 1365 { INDEX_op_st32_i64, { "r", "r" } }, 1366 { INDEX_op_st_i64, { "r", "r" } }, 1367 1368 { INDEX_op_add_i64, { "r", "0", "re" } }, 1369 { INDEX_op_mul_i64, { "r", "0", "re" } }, 1370 { INDEX_op_div2_i64, { "a", "d", "0", "1", "r" } }, 1371 { INDEX_op_divu2_i64, { "a", "d", "0", "1", "r" } }, 1372 { INDEX_op_sub_i64, { "r", "0", "re" } }, 1373 { INDEX_op_and_i64, { "r", "0", "reZ" } }, 1374 { INDEX_op_or_i64, { "r", "0", "re" } }, 1375 { INDEX_op_xor_i64, { "r", "0", "re" } }, 1376 1377 { INDEX_op_shl_i64, { "r", "0", "ci" } }, 1378 { INDEX_op_shr_i64, { "r", "0", "ci" } }, 1379 { INDEX_op_sar_i64, { "r", "0", "ci" } }, 1380 { INDEX_op_rotl_i64, { "r", "0", "ci" } }, 1381 { INDEX_op_rotr_i64, { "r", "0", "ci" } }, 1382 1383 { INDEX_op_brcond_i64, { "r", "re" } }, 1384 1385 { INDEX_op_bswap16_i32, { "r", "0" } }, 1386 { INDEX_op_bswap16_i64, { "r", "0" } }, 1387 { INDEX_op_bswap32_i32, { "r", "0" } }, 1388 { INDEX_op_bswap32_i64, { "r", "0" } }, 1389 { INDEX_op_bswap64_i64, { "r", "0" } }, 1390 1391 { INDEX_op_neg_i32, { "r", "0" } }, 1392 { INDEX_op_neg_i64, { "r", "0" } }, 1393 1394 { INDEX_op_not_i32, { "r", "0" } }, 1395 { INDEX_op_not_i64, { "r", "0" } }, 1396 1397 { INDEX_op_ext8s_i32, { "r", "r"} }, 1398 { INDEX_op_ext16s_i32, { "r", "r"} }, 1399 { INDEX_op_ext8s_i64, { "r", "r"} }, 1400 { INDEX_op_ext16s_i64, { "r", "r"} }, 1401 { INDEX_op_ext32s_i64, { "r", "r"} }, 1402 { INDEX_op_ext8u_i32, { "r", "r"} }, 1403 { INDEX_op_ext16u_i32, { "r", "r"} }, 1404 { INDEX_op_ext8u_i64, { "r", "r"} }, 1405 { INDEX_op_ext16u_i64, { "r", "r"} }, 1406 { INDEX_op_ext32u_i64, { "r", "r"} }, 1407 1408 { INDEX_op_setcond_i32, { "r", "r", "ri" } }, 1409 { INDEX_op_setcond_i64, { "r", "r", "re" } }, 1410 1411 { INDEX_op_qemu_ld8u, { "r", "L" } }, 1412 { INDEX_op_qemu_ld8s, { "r", "L" } }, 1413 { INDEX_op_qemu_ld16u, { "r", "L" } }, 1414 { INDEX_op_qemu_ld16s, { "r", "L" } }, 1415 { INDEX_op_qemu_ld32u, { "r", "L" } }, 1416 { INDEX_op_qemu_ld32s, { "r", "L" } }, 1417 { INDEX_op_qemu_ld64, { "r", "L" } }, 1418 1419 { INDEX_op_qemu_st8, { "L", "L" } }, 1420 { INDEX_op_qemu_st16, { "L", "L" } }, 1421 { INDEX_op_qemu_st32, { "L", "L" } }, 1422 { INDEX_op_qemu_st64, { "L", "L" } }, 1423 1424 { -1 }, 1425 }; 1426 1427 void tcg_target_init(TCGContext *s) 1428 { 1429 /* fail safe */ 1430 if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) 1431 tcg_abort(); 1432 1433 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xffff); 1434 tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, 0xffff); 1435 tcg_regset_set32(tcg_target_call_clobber_regs, 0, 1436 (1 << TCG_REG_RDI) | 1437 (1 << TCG_REG_RSI) | 1438 (1 << TCG_REG_RDX) | 1439 (1 << TCG_REG_RCX) | 1440 (1 << TCG_REG_R8) | 1441 (1 << TCG_REG_R9) | 1442 (1 << TCG_REG_RAX) | 1443 (1 << TCG_REG_R10) | 1444 (1 << TCG_REG_R11)); 1445 1446 tcg_regset_clear(s->reserved_regs); 1447 tcg_regset_set_reg(s->reserved_regs, TCG_REG_RSP); 1448 1449 tcg_add_target_add_op_defs(x86_64_op_defs); 1450 } 1451
