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1.1 ! root 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: "%eax", ! 28: "%ecx", ! 29: "%edx", ! 30: "%ebx", ! 31: "%esp", ! 32: "%ebp", ! 33: "%esi", ! 34: "%edi", ! 35: }; ! 36: #endif ! 37: ! 38: static const int tcg_target_reg_alloc_order[] = { ! 39: TCG_REG_EAX, ! 40: TCG_REG_EDX, ! 41: TCG_REG_ECX, ! 42: TCG_REG_EBX, ! 43: TCG_REG_ESI, ! 44: TCG_REG_EDI, ! 45: TCG_REG_EBP, ! 46: }; ! 47: ! 48: static const int tcg_target_call_iarg_regs[3] = { TCG_REG_EAX, TCG_REG_EDX, TCG_REG_ECX }; ! 49: static const int tcg_target_call_oarg_regs[2] = { TCG_REG_EAX, TCG_REG_EDX }; ! 50: ! 51: static uint8_t *tb_ret_addr; ! 52: ! 53: static void patch_reloc(uint8_t *code_ptr, int type, ! 54: tcg_target_long value, tcg_target_long addend) ! 55: { ! 56: value += addend; ! 57: switch(type) { ! 58: case R_386_32: ! 59: *(uint32_t *)code_ptr = value; ! 60: break; ! 61: case R_386_PC32: ! 62: *(uint32_t *)code_ptr = value - (long)code_ptr; ! 63: break; ! 64: default: ! 65: tcg_abort(); ! 66: } ! 67: } ! 68: ! 69: /* maximum number of register used for input function arguments */ ! 70: static inline int tcg_target_get_call_iarg_regs_count(int flags) ! 71: { ! 72: flags &= TCG_CALL_TYPE_MASK; ! 73: switch(flags) { ! 74: case TCG_CALL_TYPE_STD: ! 75: return 0; ! 76: case TCG_CALL_TYPE_REGPARM_1: ! 77: case TCG_CALL_TYPE_REGPARM_2: ! 78: case TCG_CALL_TYPE_REGPARM: ! 79: return flags - TCG_CALL_TYPE_REGPARM_1 + 1; ! 80: default: ! 81: tcg_abort(); ! 82: } ! 83: } ! 84: ! 85: /* parse target specific constraints */ ! 86: static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) ! 87: { ! 88: const char *ct_str; ! 89: ! 90: ct_str = *pct_str; ! 91: switch(ct_str[0]) { ! 92: case 'a': ! 93: ct->ct |= TCG_CT_REG; ! 94: tcg_regset_set_reg(ct->u.regs, TCG_REG_EAX); ! 95: break; ! 96: case 'b': ! 97: ct->ct |= TCG_CT_REG; ! 98: tcg_regset_set_reg(ct->u.regs, TCG_REG_EBX); ! 99: break; ! 100: case 'c': ! 101: ct->ct |= TCG_CT_REG; ! 102: tcg_regset_set_reg(ct->u.regs, TCG_REG_ECX); ! 103: break; ! 104: case 'd': ! 105: ct->ct |= TCG_CT_REG; ! 106: tcg_regset_set_reg(ct->u.regs, TCG_REG_EDX); ! 107: break; ! 108: case 'S': ! 109: ct->ct |= TCG_CT_REG; ! 110: tcg_regset_set_reg(ct->u.regs, TCG_REG_ESI); ! 111: break; ! 112: case 'D': ! 113: ct->ct |= TCG_CT_REG; ! 114: tcg_regset_set_reg(ct->u.regs, TCG_REG_EDI); ! 115: break; ! 116: case 'q': ! 117: ct->ct |= TCG_CT_REG; ! 118: tcg_regset_set32(ct->u.regs, 0, 0xf); ! 119: break; ! 120: case 'r': ! 121: ct->ct |= TCG_CT_REG; ! 122: tcg_regset_set32(ct->u.regs, 0, 0xff); ! 123: break; ! 124: ! 125: /* qemu_ld/st address constraint */ ! 126: case 'L': ! 127: ct->ct |= TCG_CT_REG; ! 128: tcg_regset_set32(ct->u.regs, 0, 0xff); ! 129: tcg_regset_reset_reg(ct->u.regs, TCG_REG_EAX); ! 130: tcg_regset_reset_reg(ct->u.regs, TCG_REG_EDX); ! 131: break; ! 132: default: ! 133: return -1; ! 134: } ! 135: ct_str++; ! 136: *pct_str = ct_str; ! 137: return 0; ! 138: } ! 139: ! 140: /* test if a constant matches the constraint */ ! 141: static inline int tcg_target_const_match(tcg_target_long val, ! 142: const TCGArgConstraint *arg_ct) ! 143: { ! 144: int ct; ! 145: ct = arg_ct->ct; ! 146: if (ct & TCG_CT_CONST) ! 147: return 1; ! 148: else ! 149: return 0; ! 150: } ! 151: ! 152: #define ARITH_ADD 0 ! 153: #define ARITH_OR 1 ! 154: #define ARITH_ADC 2 ! 155: #define ARITH_SBB 3 ! 156: #define ARITH_AND 4 ! 157: #define ARITH_SUB 5 ! 158: #define ARITH_XOR 6 ! 159: #define ARITH_CMP 7 ! 160: ! 161: #define SHIFT_SHL 4 ! 162: #define SHIFT_SHR 5 ! 163: #define SHIFT_SAR 7 ! 164: ! 165: #define JCC_JMP (-1) ! 166: #define JCC_JO 0x0 ! 167: #define JCC_JNO 0x1 ! 168: #define JCC_JB 0x2 ! 169: #define JCC_JAE 0x3 ! 170: #define JCC_JE 0x4 ! 171: #define JCC_JNE 0x5 ! 172: #define JCC_JBE 0x6 ! 173: #define JCC_JA 0x7 ! 174: #define JCC_JS 0x8 ! 175: #define JCC_JNS 0x9 ! 176: #define JCC_JP 0xa ! 177: #define JCC_JNP 0xb ! 178: #define JCC_JL 0xc ! 179: #define JCC_JGE 0xd ! 180: #define JCC_JLE 0xe ! 181: #define JCC_JG 0xf ! 182: ! 183: #define P_EXT 0x100 /* 0x0f opcode prefix */ ! 184: ! 185: static const uint8_t tcg_cond_to_jcc[10] = { ! 186: [TCG_COND_EQ] = JCC_JE, ! 187: [TCG_COND_NE] = JCC_JNE, ! 188: [TCG_COND_LT] = JCC_JL, ! 189: [TCG_COND_GE] = JCC_JGE, ! 190: [TCG_COND_LE] = JCC_JLE, ! 191: [TCG_COND_GT] = JCC_JG, ! 192: [TCG_COND_LTU] = JCC_JB, ! 193: [TCG_COND_GEU] = JCC_JAE, ! 194: [TCG_COND_LEU] = JCC_JBE, ! 195: [TCG_COND_GTU] = JCC_JA, ! 196: }; ! 197: ! 198: static inline void tcg_out_opc(TCGContext *s, int opc) ! 199: { ! 200: if (opc & P_EXT) ! 201: tcg_out8(s, 0x0f); ! 202: tcg_out8(s, opc); ! 203: } ! 204: ! 205: static inline void tcg_out_modrm(TCGContext *s, int opc, int r, int rm) ! 206: { ! 207: tcg_out_opc(s, opc); ! 208: tcg_out8(s, 0xc0 | (r << 3) | rm); ! 209: } ! 210: ! 211: /* rm == -1 means no register index */ ! 212: static inline void tcg_out_modrm_offset(TCGContext *s, int opc, int r, int rm, ! 213: int32_t offset) ! 214: { ! 215: tcg_out_opc(s, opc); ! 216: if (rm == -1) { ! 217: tcg_out8(s, 0x05 | (r << 3)); ! 218: tcg_out32(s, offset); ! 219: } else if (offset == 0 && rm != TCG_REG_EBP) { ! 220: if (rm == TCG_REG_ESP) { ! 221: tcg_out8(s, 0x04 | (r << 3)); ! 222: tcg_out8(s, 0x24); ! 223: } else { ! 224: tcg_out8(s, 0x00 | (r << 3) | rm); ! 225: } ! 226: } else if ((int8_t)offset == offset) { ! 227: if (rm == TCG_REG_ESP) { ! 228: tcg_out8(s, 0x44 | (r << 3)); ! 229: tcg_out8(s, 0x24); ! 230: } else { ! 231: tcg_out8(s, 0x40 | (r << 3) | rm); ! 232: } ! 233: tcg_out8(s, offset); ! 234: } else { ! 235: if (rm == TCG_REG_ESP) { ! 236: tcg_out8(s, 0x84 | (r << 3)); ! 237: tcg_out8(s, 0x24); ! 238: } else { ! 239: tcg_out8(s, 0x80 | (r << 3) | rm); ! 240: } ! 241: tcg_out32(s, offset); ! 242: } ! 243: } ! 244: ! 245: static inline void tcg_out_mov(TCGContext *s, int ret, int arg) ! 246: { ! 247: if (arg != ret) ! 248: tcg_out_modrm(s, 0x8b, ret, arg); ! 249: } ! 250: ! 251: static inline void tcg_out_movi(TCGContext *s, TCGType type, ! 252: int ret, int32_t arg) ! 253: { ! 254: if (arg == 0) { ! 255: /* xor r0,r0 */ ! 256: tcg_out_modrm(s, 0x01 | (ARITH_XOR << 3), ret, ret); ! 257: } else { ! 258: tcg_out8(s, 0xb8 + ret); ! 259: tcg_out32(s, arg); ! 260: } ! 261: } ! 262: ! 263: static inline void tcg_out_ld(TCGContext *s, TCGType type, int ret, ! 264: int arg1, tcg_target_long arg2) ! 265: { ! 266: /* movl */ ! 267: tcg_out_modrm_offset(s, 0x8b, ret, arg1, arg2); ! 268: } ! 269: ! 270: static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, ! 271: int arg1, tcg_target_long arg2) ! 272: { ! 273: /* movl */ ! 274: tcg_out_modrm_offset(s, 0x89, arg, arg1, arg2); ! 275: } ! 276: ! 277: static inline void tgen_arithi(TCGContext *s, int c, int r0, int32_t val) ! 278: { ! 279: if (val == (int8_t)val) { ! 280: tcg_out_modrm(s, 0x83, c, r0); ! 281: tcg_out8(s, val); ! 282: } else { ! 283: tcg_out_modrm(s, 0x81, c, r0); ! 284: tcg_out32(s, val); ! 285: } ! 286: } ! 287: ! 288: static void tcg_out_addi(TCGContext *s, int reg, tcg_target_long val) ! 289: { ! 290: if (val != 0) ! 291: tgen_arithi(s, ARITH_ADD, reg, val); ! 292: } ! 293: ! 294: static void tcg_out_jxx(TCGContext *s, int opc, int label_index) ! 295: { ! 296: int32_t val, val1; ! 297: TCGLabel *l = &s->labels[label_index]; ! 298: ! 299: if (l->has_value) { ! 300: val = l->u.value - (tcg_target_long)s->code_ptr; ! 301: val1 = val - 2; ! 302: if ((int8_t)val1 == val1) { ! 303: if (opc == -1) ! 304: tcg_out8(s, 0xeb); ! 305: else ! 306: tcg_out8(s, 0x70 + opc); ! 307: tcg_out8(s, val1); ! 308: } else { ! 309: if (opc == -1) { ! 310: tcg_out8(s, 0xe9); ! 311: tcg_out32(s, val - 5); ! 312: } else { ! 313: tcg_out8(s, 0x0f); ! 314: tcg_out8(s, 0x80 + opc); ! 315: tcg_out32(s, val - 6); ! 316: } ! 317: } ! 318: } else { ! 319: if (opc == -1) { ! 320: tcg_out8(s, 0xe9); ! 321: } else { ! 322: tcg_out8(s, 0x0f); ! 323: tcg_out8(s, 0x80 + opc); ! 324: } ! 325: tcg_out_reloc(s, s->code_ptr, R_386_PC32, label_index, -4); ! 326: s->code_ptr += 4; ! 327: } ! 328: } ! 329: ! 330: static void tcg_out_brcond(TCGContext *s, int cond, ! 331: TCGArg arg1, TCGArg arg2, int const_arg2, ! 332: int label_index) ! 333: { ! 334: if (const_arg2) { ! 335: if (arg2 == 0) { ! 336: /* test r, r */ ! 337: tcg_out_modrm(s, 0x85, arg1, arg1); ! 338: } else { ! 339: tgen_arithi(s, ARITH_CMP, arg1, arg2); ! 340: } ! 341: } else { ! 342: tcg_out_modrm(s, 0x01 | (ARITH_CMP << 3), arg2, arg1); ! 343: } ! 344: tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index); ! 345: } ! 346: ! 347: /* XXX: we implement it at the target level to avoid having to ! 348: handle cross basic blocks temporaries */ ! 349: static void tcg_out_brcond2(TCGContext *s, ! 350: const TCGArg *args, const int *const_args) ! 351: { ! 352: int label_next; ! 353: label_next = gen_new_label(); ! 354: switch(args[4]) { ! 355: case TCG_COND_EQ: ! 356: tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], label_next); ! 357: tcg_out_brcond(s, TCG_COND_EQ, args[1], args[3], const_args[3], args[5]); ! 358: break; ! 359: case TCG_COND_NE: ! 360: tcg_out_brcond(s, TCG_COND_NE, args[0], args[2], const_args[2], args[5]); ! 361: tcg_out_brcond(s, TCG_COND_NE, args[1], args[3], const_args[3], args[5]); ! 362: break; ! 363: case TCG_COND_LT: ! 364: tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], args[5]); ! 365: tcg_out_jxx(s, JCC_JNE, label_next); ! 366: tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], args[5]); ! 367: break; ! 368: case TCG_COND_LE: ! 369: tcg_out_brcond(s, TCG_COND_LT, args[1], args[3], const_args[3], args[5]); ! 370: tcg_out_jxx(s, JCC_JNE, label_next); ! 371: tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], args[5]); ! 372: break; ! 373: case TCG_COND_GT: ! 374: tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], args[5]); ! 375: tcg_out_jxx(s, JCC_JNE, label_next); ! 376: tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], args[5]); ! 377: break; ! 378: case TCG_COND_GE: ! 379: tcg_out_brcond(s, TCG_COND_GT, args[1], args[3], const_args[3], args[5]); ! 380: tcg_out_jxx(s, JCC_JNE, label_next); ! 381: tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], args[5]); ! 382: break; ! 383: case TCG_COND_LTU: ! 384: tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], args[5]); ! 385: tcg_out_jxx(s, JCC_JNE, label_next); ! 386: tcg_out_brcond(s, TCG_COND_LTU, args[0], args[2], const_args[2], args[5]); ! 387: break; ! 388: case TCG_COND_LEU: ! 389: tcg_out_brcond(s, TCG_COND_LTU, args[1], args[3], const_args[3], args[5]); ! 390: tcg_out_jxx(s, JCC_JNE, label_next); ! 391: tcg_out_brcond(s, TCG_COND_LEU, args[0], args[2], const_args[2], args[5]); ! 392: break; ! 393: case TCG_COND_GTU: ! 394: tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], args[5]); ! 395: tcg_out_jxx(s, JCC_JNE, label_next); ! 396: tcg_out_brcond(s, TCG_COND_GTU, args[0], args[2], const_args[2], args[5]); ! 397: break; ! 398: case TCG_COND_GEU: ! 399: tcg_out_brcond(s, TCG_COND_GTU, args[1], args[3], const_args[3], args[5]); ! 400: tcg_out_jxx(s, JCC_JNE, label_next); ! 401: tcg_out_brcond(s, TCG_COND_GEU, args[0], args[2], const_args[2], args[5]); ! 402: break; ! 403: default: ! 404: tcg_abort(); ! 405: } ! 406: tcg_out_label(s, label_next, (tcg_target_long)s->code_ptr); ! 407: } ! 408: ! 409: #if defined(CONFIG_SOFTMMU) ! 410: ! 411: #include "../../softmmu_defs.h" ! 412: ! 413: static void *qemu_ld_helpers[4] = { ! 414: __ldb_mmu, ! 415: __ldw_mmu, ! 416: __ldl_mmu, ! 417: __ldq_mmu, ! 418: }; ! 419: ! 420: static void *qemu_st_helpers[4] = { ! 421: __stb_mmu, ! 422: __stw_mmu, ! 423: __stl_mmu, ! 424: __stq_mmu, ! 425: }; ! 426: #endif ! 427: ! 428: /* XXX: qemu_ld and qemu_st could be modified to clobber only EDX and ! 429: EAX. It will be useful once fixed registers globals are less ! 430: common. */ ! 431: static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, ! 432: int opc) ! 433: { ! 434: int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap; ! 435: #if defined(CONFIG_SOFTMMU) ! 436: uint8_t *label1_ptr, *label2_ptr; ! 437: #endif ! 438: #if TARGET_LONG_BITS == 64 ! 439: #if defined(CONFIG_SOFTMMU) ! 440: uint8_t *label3_ptr; ! 441: #endif ! 442: int addr_reg2; ! 443: #endif ! 444: ! 445: data_reg = *args++; ! 446: if (opc == 3) ! 447: data_reg2 = *args++; ! 448: else ! 449: data_reg2 = 0; ! 450: addr_reg = *args++; ! 451: #if TARGET_LONG_BITS == 64 ! 452: addr_reg2 = *args++; ! 453: #endif ! 454: mem_index = *args; ! 455: s_bits = opc & 3; ! 456: ! 457: r0 = TCG_REG_EAX; ! 458: r1 = TCG_REG_EDX; ! 459: ! 460: #if defined(CONFIG_SOFTMMU) ! 461: tcg_out_mov(s, r1, addr_reg); ! 462: ! 463: tcg_out_mov(s, r0, addr_reg); ! 464: ! 465: tcg_out_modrm(s, 0xc1, 5, r1); /* shr $x, r1 */ ! 466: tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); ! 467: ! 468: tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */ ! 469: tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); ! 470: ! 471: tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ ! 472: tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); ! 473: ! 474: tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ ! 475: tcg_out8(s, 0x80 | (r1 << 3) | 0x04); ! 476: tcg_out8(s, (5 << 3) | r1); ! 477: tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_read)); ! 478: ! 479: /* cmp 0(r1), r0 */ ! 480: tcg_out_modrm_offset(s, 0x3b, r0, r1, 0); ! 481: ! 482: tcg_out_mov(s, r0, addr_reg); ! 483: ! 484: #if TARGET_LONG_BITS == 32 ! 485: /* je label1 */ ! 486: tcg_out8(s, 0x70 + JCC_JE); ! 487: label1_ptr = s->code_ptr; ! 488: s->code_ptr++; ! 489: #else ! 490: /* jne label3 */ ! 491: tcg_out8(s, 0x70 + JCC_JNE); ! 492: label3_ptr = s->code_ptr; ! 493: s->code_ptr++; ! 494: ! 495: /* cmp 4(r1), addr_reg2 */ ! 496: tcg_out_modrm_offset(s, 0x3b, addr_reg2, r1, 4); ! 497: ! 498: /* je label1 */ ! 499: tcg_out8(s, 0x70 + JCC_JE); ! 500: label1_ptr = s->code_ptr; ! 501: s->code_ptr++; ! 502: ! 503: /* label3: */ ! 504: *label3_ptr = s->code_ptr - label3_ptr - 1; ! 505: #endif ! 506: ! 507: /* XXX: move that code at the end of the TB */ ! 508: #if TARGET_LONG_BITS == 32 ! 509: tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_EDX, mem_index); ! 510: #else ! 511: tcg_out_mov(s, TCG_REG_EDX, addr_reg2); ! 512: tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index); ! 513: #endif ! 514: tcg_out8(s, 0xe8); ! 515: tcg_out32(s, (tcg_target_long)qemu_ld_helpers[s_bits] - ! 516: (tcg_target_long)s->code_ptr - 4); ! 517: ! 518: switch(opc) { ! 519: case 0 | 4: ! 520: /* movsbl */ ! 521: tcg_out_modrm(s, 0xbe | P_EXT, data_reg, TCG_REG_EAX); ! 522: break; ! 523: case 1 | 4: ! 524: /* movswl */ ! 525: tcg_out_modrm(s, 0xbf | P_EXT, data_reg, TCG_REG_EAX); ! 526: break; ! 527: case 0: ! 528: /* movzbl */ ! 529: tcg_out_modrm(s, 0xb6 | P_EXT, data_reg, TCG_REG_EAX); ! 530: break; ! 531: case 1: ! 532: /* movzwl */ ! 533: tcg_out_modrm(s, 0xb7 | P_EXT, data_reg, TCG_REG_EAX); ! 534: break; ! 535: case 2: ! 536: default: ! 537: tcg_out_mov(s, data_reg, TCG_REG_EAX); ! 538: break; ! 539: case 3: ! 540: if (data_reg == TCG_REG_EDX) { ! 541: tcg_out_opc(s, 0x90 + TCG_REG_EDX); /* xchg %edx, %eax */ ! 542: tcg_out_mov(s, data_reg2, TCG_REG_EAX); ! 543: } else { ! 544: tcg_out_mov(s, data_reg, TCG_REG_EAX); ! 545: tcg_out_mov(s, data_reg2, TCG_REG_EDX); ! 546: } ! 547: break; ! 548: } ! 549: ! 550: /* jmp label2 */ ! 551: tcg_out8(s, 0xeb); ! 552: label2_ptr = s->code_ptr; ! 553: s->code_ptr++; ! 554: ! 555: /* label1: */ ! 556: *label1_ptr = s->code_ptr - label1_ptr - 1; ! 557: ! 558: /* add x(r1), r0 */ ! 559: tcg_out_modrm_offset(s, 0x03, r0, r1, offsetof(CPUTLBEntry, addend) - ! 560: offsetof(CPUTLBEntry, addr_read)); ! 561: #else ! 562: r0 = addr_reg; ! 563: #endif ! 564: ! 565: #ifdef TARGET_WORDS_BIGENDIAN ! 566: bswap = 1; ! 567: #else ! 568: bswap = 0; ! 569: #endif ! 570: switch(opc) { ! 571: case 0: ! 572: /* movzbl */ ! 573: tcg_out_modrm_offset(s, 0xb6 | P_EXT, data_reg, r0, 0); ! 574: break; ! 575: case 0 | 4: ! 576: /* movsbl */ ! 577: tcg_out_modrm_offset(s, 0xbe | P_EXT, data_reg, r0, 0); ! 578: break; ! 579: case 1: ! 580: /* movzwl */ ! 581: tcg_out_modrm_offset(s, 0xb7 | P_EXT, data_reg, r0, 0); ! 582: if (bswap) { ! 583: /* rolw $8, data_reg */ ! 584: tcg_out8(s, 0x66); ! 585: tcg_out_modrm(s, 0xc1, 0, data_reg); ! 586: tcg_out8(s, 8); ! 587: } ! 588: break; ! 589: case 1 | 4: ! 590: /* movswl */ ! 591: tcg_out_modrm_offset(s, 0xbf | P_EXT, data_reg, r0, 0); ! 592: if (bswap) { ! 593: /* rolw $8, data_reg */ ! 594: tcg_out8(s, 0x66); ! 595: tcg_out_modrm(s, 0xc1, 0, data_reg); ! 596: tcg_out8(s, 8); ! 597: ! 598: /* movswl data_reg, data_reg */ ! 599: tcg_out_modrm(s, 0xbf | P_EXT, data_reg, data_reg); ! 600: } ! 601: break; ! 602: case 2: ! 603: /* movl (r0), data_reg */ ! 604: tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0); ! 605: if (bswap) { ! 606: /* bswap */ ! 607: tcg_out_opc(s, (0xc8 + data_reg) | P_EXT); ! 608: } ! 609: break; ! 610: case 3: ! 611: /* XXX: could be nicer */ ! 612: if (r0 == data_reg) { ! 613: r1 = TCG_REG_EDX; ! 614: if (r1 == data_reg) ! 615: r1 = TCG_REG_EAX; ! 616: tcg_out_mov(s, r1, r0); ! 617: r0 = r1; ! 618: } ! 619: if (!bswap) { ! 620: tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 0); ! 621: tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 4); ! 622: } else { ! 623: tcg_out_modrm_offset(s, 0x8b, data_reg, r0, 4); ! 624: tcg_out_opc(s, (0xc8 + data_reg) | P_EXT); ! 625: ! 626: tcg_out_modrm_offset(s, 0x8b, data_reg2, r0, 0); ! 627: /* bswap */ ! 628: tcg_out_opc(s, (0xc8 + data_reg2) | P_EXT); ! 629: } ! 630: break; ! 631: default: ! 632: tcg_abort(); ! 633: } ! 634: ! 635: #if defined(CONFIG_SOFTMMU) ! 636: /* label2: */ ! 637: *label2_ptr = s->code_ptr - label2_ptr - 1; ! 638: #endif ! 639: } ! 640: ! 641: ! 642: static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, ! 643: int opc) ! 644: { ! 645: int addr_reg, data_reg, data_reg2, r0, r1, mem_index, s_bits, bswap; ! 646: #if defined(CONFIG_SOFTMMU) ! 647: uint8_t *label1_ptr, *label2_ptr; ! 648: #endif ! 649: #if TARGET_LONG_BITS == 64 ! 650: #if defined(CONFIG_SOFTMMU) ! 651: uint8_t *label3_ptr; ! 652: #endif ! 653: int addr_reg2; ! 654: #endif ! 655: ! 656: data_reg = *args++; ! 657: if (opc == 3) ! 658: data_reg2 = *args++; ! 659: else ! 660: data_reg2 = 0; ! 661: addr_reg = *args++; ! 662: #if TARGET_LONG_BITS == 64 ! 663: addr_reg2 = *args++; ! 664: #endif ! 665: mem_index = *args; ! 666: ! 667: s_bits = opc; ! 668: ! 669: r0 = TCG_REG_EAX; ! 670: r1 = TCG_REG_EDX; ! 671: ! 672: #if defined(CONFIG_SOFTMMU) ! 673: tcg_out_mov(s, r1, addr_reg); ! 674: ! 675: tcg_out_mov(s, r0, addr_reg); ! 676: ! 677: tcg_out_modrm(s, 0xc1, 5, r1); /* shr $x, r1 */ ! 678: tcg_out8(s, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); ! 679: ! 680: tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */ ! 681: tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); ! 682: ! 683: tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ ! 684: tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); ! 685: ! 686: tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ ! 687: tcg_out8(s, 0x80 | (r1 << 3) | 0x04); ! 688: tcg_out8(s, (5 << 3) | r1); ! 689: tcg_out32(s, offsetof(CPUState, tlb_table[mem_index][0].addr_write)); ! 690: ! 691: /* cmp 0(r1), r0 */ ! 692: tcg_out_modrm_offset(s, 0x3b, r0, r1, 0); ! 693: ! 694: tcg_out_mov(s, r0, addr_reg); ! 695: ! 696: #if TARGET_LONG_BITS == 32 ! 697: /* je label1 */ ! 698: tcg_out8(s, 0x70 + JCC_JE); ! 699: label1_ptr = s->code_ptr; ! 700: s->code_ptr++; ! 701: #else ! 702: /* jne label3 */ ! 703: tcg_out8(s, 0x70 + JCC_JNE); ! 704: label3_ptr = s->code_ptr; ! 705: s->code_ptr++; ! 706: ! 707: /* cmp 4(r1), addr_reg2 */ ! 708: tcg_out_modrm_offset(s, 0x3b, addr_reg2, r1, 4); ! 709: ! 710: /* je label1 */ ! 711: tcg_out8(s, 0x70 + JCC_JE); ! 712: label1_ptr = s->code_ptr; ! 713: s->code_ptr++; ! 714: ! 715: /* label3: */ ! 716: *label3_ptr = s->code_ptr - label3_ptr - 1; ! 717: #endif ! 718: ! 719: /* XXX: move that code at the end of the TB */ ! 720: #if TARGET_LONG_BITS == 32 ! 721: if (opc == 3) { ! 722: tcg_out_mov(s, TCG_REG_EDX, data_reg); ! 723: tcg_out_mov(s, TCG_REG_ECX, data_reg2); ! 724: tcg_out8(s, 0x6a); /* push Ib */ ! 725: tcg_out8(s, mem_index); ! 726: tcg_out8(s, 0xe8); ! 727: tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - ! 728: (tcg_target_long)s->code_ptr - 4); ! 729: tcg_out_addi(s, TCG_REG_ESP, 4); ! 730: } else { ! 731: switch(opc) { ! 732: case 0: ! 733: /* movzbl */ ! 734: tcg_out_modrm(s, 0xb6 | P_EXT, TCG_REG_EDX, data_reg); ! 735: break; ! 736: case 1: ! 737: /* movzwl */ ! 738: tcg_out_modrm(s, 0xb7 | P_EXT, TCG_REG_EDX, data_reg); ! 739: break; ! 740: case 2: ! 741: tcg_out_mov(s, TCG_REG_EDX, data_reg); ! 742: break; ! 743: } ! 744: tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_ECX, mem_index); ! 745: tcg_out8(s, 0xe8); ! 746: tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - ! 747: (tcg_target_long)s->code_ptr - 4); ! 748: } ! 749: #else ! 750: if (opc == 3) { ! 751: tcg_out_mov(s, TCG_REG_EDX, addr_reg2); ! 752: tcg_out8(s, 0x6a); /* push Ib */ ! 753: tcg_out8(s, mem_index); ! 754: tcg_out_opc(s, 0x50 + data_reg2); /* push */ ! 755: tcg_out_opc(s, 0x50 + data_reg); /* push */ ! 756: tcg_out8(s, 0xe8); ! 757: tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - ! 758: (tcg_target_long)s->code_ptr - 4); ! 759: tcg_out_addi(s, TCG_REG_ESP, 12); ! 760: } else { ! 761: tcg_out_mov(s, TCG_REG_EDX, addr_reg2); ! 762: switch(opc) { ! 763: case 0: ! 764: /* movzbl */ ! 765: tcg_out_modrm(s, 0xb6 | P_EXT, TCG_REG_ECX, data_reg); ! 766: break; ! 767: case 1: ! 768: /* movzwl */ ! 769: tcg_out_modrm(s, 0xb7 | P_EXT, TCG_REG_ECX, data_reg); ! 770: break; ! 771: case 2: ! 772: tcg_out_mov(s, TCG_REG_ECX, data_reg); ! 773: break; ! 774: } ! 775: tcg_out8(s, 0x6a); /* push Ib */ ! 776: tcg_out8(s, mem_index); ! 777: tcg_out8(s, 0xe8); ! 778: tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - ! 779: (tcg_target_long)s->code_ptr - 4); ! 780: tcg_out_addi(s, TCG_REG_ESP, 4); ! 781: } ! 782: #endif ! 783: ! 784: /* jmp label2 */ ! 785: tcg_out8(s, 0xeb); ! 786: label2_ptr = s->code_ptr; ! 787: s->code_ptr++; ! 788: ! 789: /* label1: */ ! 790: *label1_ptr = s->code_ptr - label1_ptr - 1; ! 791: ! 792: /* add x(r1), r0 */ ! 793: tcg_out_modrm_offset(s, 0x03, r0, r1, offsetof(CPUTLBEntry, addend) - ! 794: offsetof(CPUTLBEntry, addr_write)); ! 795: #else ! 796: r0 = addr_reg; ! 797: #endif ! 798: ! 799: #ifdef TARGET_WORDS_BIGENDIAN ! 800: bswap = 1; ! 801: #else ! 802: bswap = 0; ! 803: #endif ! 804: switch(opc) { ! 805: case 0: ! 806: /* movb */ ! 807: tcg_out_modrm_offset(s, 0x88, data_reg, r0, 0); ! 808: break; ! 809: case 1: ! 810: if (bswap) { ! 811: tcg_out_mov(s, r1, data_reg); ! 812: tcg_out8(s, 0x66); /* rolw $8, %ecx */ ! 813: tcg_out_modrm(s, 0xc1, 0, r1); ! 814: tcg_out8(s, 8); ! 815: data_reg = r1; ! 816: } ! 817: /* movw */ ! 818: tcg_out8(s, 0x66); ! 819: tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0); ! 820: break; ! 821: case 2: ! 822: if (bswap) { ! 823: tcg_out_mov(s, r1, data_reg); ! 824: /* bswap data_reg */ ! 825: tcg_out_opc(s, (0xc8 + r1) | P_EXT); ! 826: data_reg = r1; ! 827: } ! 828: /* movl */ ! 829: tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0); ! 830: break; ! 831: case 3: ! 832: if (bswap) { ! 833: tcg_out_mov(s, r1, data_reg2); ! 834: /* bswap data_reg */ ! 835: tcg_out_opc(s, (0xc8 + r1) | P_EXT); ! 836: tcg_out_modrm_offset(s, 0x89, r1, r0, 0); ! 837: tcg_out_mov(s, r1, data_reg); ! 838: /* bswap data_reg */ ! 839: tcg_out_opc(s, (0xc8 + r1) | P_EXT); ! 840: tcg_out_modrm_offset(s, 0x89, r1, r0, 4); ! 841: } else { ! 842: tcg_out_modrm_offset(s, 0x89, data_reg, r0, 0); ! 843: tcg_out_modrm_offset(s, 0x89, data_reg2, r0, 4); ! 844: } ! 845: break; ! 846: default: ! 847: tcg_abort(); ! 848: } ! 849: ! 850: #if defined(CONFIG_SOFTMMU) ! 851: /* label2: */ ! 852: *label2_ptr = s->code_ptr - label2_ptr - 1; ! 853: #endif ! 854: } ! 855: ! 856: static inline void tcg_out_op(TCGContext *s, int opc, ! 857: const TCGArg *args, const int *const_args) ! 858: { ! 859: int c; ! 860: ! 861: switch(opc) { ! 862: case INDEX_op_exit_tb: ! 863: tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_EAX, args[0]); ! 864: tcg_out8(s, 0xe9); /* jmp tb_ret_addr */ ! 865: tcg_out32(s, tb_ret_addr - s->code_ptr - 4); ! 866: break; ! 867: case INDEX_op_goto_tb: ! 868: if (s->tb_jmp_offset) { ! 869: /* direct jump method */ ! 870: tcg_out8(s, 0xe9); /* jmp im */ ! 871: s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; ! 872: tcg_out32(s, 0); ! 873: } else { ! 874: /* indirect jump method */ ! 875: /* jmp Ev */ ! 876: tcg_out_modrm_offset(s, 0xff, 4, -1, ! 877: (tcg_target_long)(s->tb_next + args[0])); ! 878: } ! 879: s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; ! 880: break; ! 881: case INDEX_op_call: ! 882: if (const_args[0]) { ! 883: tcg_out8(s, 0xe8); ! 884: tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4); ! 885: } else { ! 886: tcg_out_modrm(s, 0xff, 2, args[0]); ! 887: } ! 888: break; ! 889: case INDEX_op_jmp: ! 890: if (const_args[0]) { ! 891: tcg_out8(s, 0xe9); ! 892: tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4); ! 893: } else { ! 894: tcg_out_modrm(s, 0xff, 4, args[0]); ! 895: } ! 896: break; ! 897: case INDEX_op_br: ! 898: tcg_out_jxx(s, JCC_JMP, args[0]); ! 899: break; ! 900: case INDEX_op_movi_i32: ! 901: tcg_out_movi(s, TCG_TYPE_I32, args[0], args[1]); ! 902: break; ! 903: case INDEX_op_ld8u_i32: ! 904: /* movzbl */ ! 905: tcg_out_modrm_offset(s, 0xb6 | P_EXT, args[0], args[1], args[2]); ! 906: break; ! 907: case INDEX_op_ld8s_i32: ! 908: /* movsbl */ ! 909: tcg_out_modrm_offset(s, 0xbe | P_EXT, args[0], args[1], args[2]); ! 910: break; ! 911: case INDEX_op_ld16u_i32: ! 912: /* movzwl */ ! 913: tcg_out_modrm_offset(s, 0xb7 | P_EXT, args[0], args[1], args[2]); ! 914: break; ! 915: case INDEX_op_ld16s_i32: ! 916: /* movswl */ ! 917: tcg_out_modrm_offset(s, 0xbf | P_EXT, args[0], args[1], args[2]); ! 918: break; ! 919: case INDEX_op_ld_i32: ! 920: /* movl */ ! 921: tcg_out_modrm_offset(s, 0x8b, args[0], args[1], args[2]); ! 922: break; ! 923: case INDEX_op_st8_i32: ! 924: /* movb */ ! 925: tcg_out_modrm_offset(s, 0x88, args[0], args[1], args[2]); ! 926: break; ! 927: case INDEX_op_st16_i32: ! 928: /* movw */ ! 929: tcg_out8(s, 0x66); ! 930: tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]); ! 931: break; ! 932: case INDEX_op_st_i32: ! 933: /* movl */ ! 934: tcg_out_modrm_offset(s, 0x89, args[0], args[1], args[2]); ! 935: break; ! 936: case INDEX_op_sub_i32: ! 937: c = ARITH_SUB; ! 938: goto gen_arith; ! 939: case INDEX_op_and_i32: ! 940: c = ARITH_AND; ! 941: goto gen_arith; ! 942: case INDEX_op_or_i32: ! 943: c = ARITH_OR; ! 944: goto gen_arith; ! 945: case INDEX_op_xor_i32: ! 946: c = ARITH_XOR; ! 947: goto gen_arith; ! 948: case INDEX_op_add_i32: ! 949: c = ARITH_ADD; ! 950: gen_arith: ! 951: if (const_args[2]) { ! 952: tgen_arithi(s, c, args[0], args[2]); ! 953: } else { ! 954: tcg_out_modrm(s, 0x01 | (c << 3), args[2], args[0]); ! 955: } ! 956: break; ! 957: case INDEX_op_mul_i32: ! 958: if (const_args[2]) { ! 959: int32_t val; ! 960: val = args[2]; ! 961: if (val == (int8_t)val) { ! 962: tcg_out_modrm(s, 0x6b, args[0], args[0]); ! 963: tcg_out8(s, val); ! 964: } else { ! 965: tcg_out_modrm(s, 0x69, args[0], args[0]); ! 966: tcg_out32(s, val); ! 967: } ! 968: } else { ! 969: tcg_out_modrm(s, 0xaf | P_EXT, args[0], args[2]); ! 970: } ! 971: break; ! 972: case INDEX_op_mulu2_i32: ! 973: tcg_out_modrm(s, 0xf7, 4, args[3]); ! 974: break; ! 975: case INDEX_op_div2_i32: ! 976: tcg_out_modrm(s, 0xf7, 7, args[4]); ! 977: break; ! 978: case INDEX_op_divu2_i32: ! 979: tcg_out_modrm(s, 0xf7, 6, args[4]); ! 980: break; ! 981: case INDEX_op_shl_i32: ! 982: c = SHIFT_SHL; ! 983: gen_shift32: ! 984: if (const_args[2]) { ! 985: if (args[2] == 1) { ! 986: tcg_out_modrm(s, 0xd1, c, args[0]); ! 987: } else { ! 988: tcg_out_modrm(s, 0xc1, c, args[0]); ! 989: tcg_out8(s, args[2]); ! 990: } ! 991: } else { ! 992: tcg_out_modrm(s, 0xd3, c, args[0]); ! 993: } ! 994: break; ! 995: case INDEX_op_shr_i32: ! 996: c = SHIFT_SHR; ! 997: goto gen_shift32; ! 998: case INDEX_op_sar_i32: ! 999: c = SHIFT_SAR; ! 1000: goto gen_shift32; ! 1001: ! 1002: case INDEX_op_add2_i32: ! 1003: if (const_args[4]) ! 1004: tgen_arithi(s, ARITH_ADD, args[0], args[4]); ! 1005: else ! 1006: tcg_out_modrm(s, 0x01 | (ARITH_ADD << 3), args[4], args[0]); ! 1007: if (const_args[5]) ! 1008: tgen_arithi(s, ARITH_ADC, args[1], args[5]); ! 1009: else ! 1010: tcg_out_modrm(s, 0x01 | (ARITH_ADC << 3), args[5], args[1]); ! 1011: break; ! 1012: case INDEX_op_sub2_i32: ! 1013: if (const_args[4]) ! 1014: tgen_arithi(s, ARITH_SUB, args[0], args[4]); ! 1015: else ! 1016: tcg_out_modrm(s, 0x01 | (ARITH_SUB << 3), args[4], args[0]); ! 1017: if (const_args[5]) ! 1018: tgen_arithi(s, ARITH_SBB, args[1], args[5]); ! 1019: else ! 1020: tcg_out_modrm(s, 0x01 | (ARITH_SBB << 3), args[5], args[1]); ! 1021: break; ! 1022: case INDEX_op_brcond_i32: ! 1023: tcg_out_brcond(s, args[2], args[0], args[1], const_args[1], args[3]); ! 1024: break; ! 1025: case INDEX_op_brcond2_i32: ! 1026: tcg_out_brcond2(s, args, const_args); ! 1027: break; ! 1028: ! 1029: case INDEX_op_qemu_ld8u: ! 1030: tcg_out_qemu_ld(s, args, 0); ! 1031: break; ! 1032: case INDEX_op_qemu_ld8s: ! 1033: tcg_out_qemu_ld(s, args, 0 | 4); ! 1034: break; ! 1035: case INDEX_op_qemu_ld16u: ! 1036: tcg_out_qemu_ld(s, args, 1); ! 1037: break; ! 1038: case INDEX_op_qemu_ld16s: ! 1039: tcg_out_qemu_ld(s, args, 1 | 4); ! 1040: break; ! 1041: case INDEX_op_qemu_ld32u: ! 1042: tcg_out_qemu_ld(s, args, 2); ! 1043: break; ! 1044: case INDEX_op_qemu_ld64: ! 1045: tcg_out_qemu_ld(s, args, 3); ! 1046: break; ! 1047: ! 1048: case INDEX_op_qemu_st8: ! 1049: tcg_out_qemu_st(s, args, 0); ! 1050: break; ! 1051: case INDEX_op_qemu_st16: ! 1052: tcg_out_qemu_st(s, args, 1); ! 1053: break; ! 1054: case INDEX_op_qemu_st32: ! 1055: tcg_out_qemu_st(s, args, 2); ! 1056: break; ! 1057: case INDEX_op_qemu_st64: ! 1058: tcg_out_qemu_st(s, args, 3); ! 1059: break; ! 1060: ! 1061: default: ! 1062: tcg_abort(); ! 1063: } ! 1064: } ! 1065: ! 1066: static const TCGTargetOpDef x86_op_defs[] = { ! 1067: { INDEX_op_exit_tb, { } }, ! 1068: { INDEX_op_goto_tb, { } }, ! 1069: { INDEX_op_call, { "ri" } }, ! 1070: { INDEX_op_jmp, { "ri" } }, ! 1071: { INDEX_op_br, { } }, ! 1072: { INDEX_op_mov_i32, { "r", "r" } }, ! 1073: { INDEX_op_movi_i32, { "r" } }, ! 1074: { INDEX_op_ld8u_i32, { "r", "r" } }, ! 1075: { INDEX_op_ld8s_i32, { "r", "r" } }, ! 1076: { INDEX_op_ld16u_i32, { "r", "r" } }, ! 1077: { INDEX_op_ld16s_i32, { "r", "r" } }, ! 1078: { INDEX_op_ld_i32, { "r", "r" } }, ! 1079: { INDEX_op_st8_i32, { "q", "r" } }, ! 1080: { INDEX_op_st16_i32, { "r", "r" } }, ! 1081: { INDEX_op_st_i32, { "r", "r" } }, ! 1082: ! 1083: { INDEX_op_add_i32, { "r", "0", "ri" } }, ! 1084: { INDEX_op_sub_i32, { "r", "0", "ri" } }, ! 1085: { INDEX_op_mul_i32, { "r", "0", "ri" } }, ! 1086: { INDEX_op_mulu2_i32, { "a", "d", "a", "r" } }, ! 1087: { INDEX_op_div2_i32, { "a", "d", "0", "1", "r" } }, ! 1088: { INDEX_op_divu2_i32, { "a", "d", "0", "1", "r" } }, ! 1089: { INDEX_op_and_i32, { "r", "0", "ri" } }, ! 1090: { INDEX_op_or_i32, { "r", "0", "ri" } }, ! 1091: { INDEX_op_xor_i32, { "r", "0", "ri" } }, ! 1092: ! 1093: { INDEX_op_shl_i32, { "r", "0", "ci" } }, ! 1094: { INDEX_op_shr_i32, { "r", "0", "ci" } }, ! 1095: { INDEX_op_sar_i32, { "r", "0", "ci" } }, ! 1096: ! 1097: { INDEX_op_brcond_i32, { "r", "ri" } }, ! 1098: ! 1099: { INDEX_op_add2_i32, { "r", "r", "0", "1", "ri", "ri" } }, ! 1100: { INDEX_op_sub2_i32, { "r", "r", "0", "1", "ri", "ri" } }, ! 1101: { INDEX_op_brcond2_i32, { "r", "r", "ri", "ri" } }, ! 1102: ! 1103: #if TARGET_LONG_BITS == 32 ! 1104: { INDEX_op_qemu_ld8u, { "r", "L" } }, ! 1105: { INDEX_op_qemu_ld8s, { "r", "L" } }, ! 1106: { INDEX_op_qemu_ld16u, { "r", "L" } }, ! 1107: { INDEX_op_qemu_ld16s, { "r", "L" } }, ! 1108: { INDEX_op_qemu_ld32u, { "r", "L" } }, ! 1109: { INDEX_op_qemu_ld64, { "r", "r", "L" } }, ! 1110: ! 1111: { INDEX_op_qemu_st8, { "cb", "L" } }, ! 1112: { INDEX_op_qemu_st16, { "L", "L" } }, ! 1113: { INDEX_op_qemu_st32, { "L", "L" } }, ! 1114: { INDEX_op_qemu_st64, { "L", "L", "L" } }, ! 1115: #else ! 1116: { INDEX_op_qemu_ld8u, { "r", "L", "L" } }, ! 1117: { INDEX_op_qemu_ld8s, { "r", "L", "L" } }, ! 1118: { INDEX_op_qemu_ld16u, { "r", "L", "L" } }, ! 1119: { INDEX_op_qemu_ld16s, { "r", "L", "L" } }, ! 1120: { INDEX_op_qemu_ld32u, { "r", "L", "L" } }, ! 1121: { INDEX_op_qemu_ld64, { "r", "r", "L", "L" } }, ! 1122: ! 1123: { INDEX_op_qemu_st8, { "cb", "L", "L" } }, ! 1124: { INDEX_op_qemu_st16, { "L", "L", "L" } }, ! 1125: { INDEX_op_qemu_st32, { "L", "L", "L" } }, ! 1126: { INDEX_op_qemu_st64, { "L", "L", "L", "L" } }, ! 1127: #endif ! 1128: { -1 }, ! 1129: }; ! 1130: ! 1131: static int tcg_target_callee_save_regs[] = { ! 1132: /* TCG_REG_EBP, */ /* currently used for the global env, so no ! 1133: need to save */ ! 1134: TCG_REG_EBX, ! 1135: TCG_REG_ESI, ! 1136: TCG_REG_EDI, ! 1137: }; ! 1138: ! 1139: static inline void tcg_out_push(TCGContext *s, int reg) ! 1140: { ! 1141: tcg_out_opc(s, 0x50 + reg); ! 1142: } ! 1143: ! 1144: static inline void tcg_out_pop(TCGContext *s, int reg) ! 1145: { ! 1146: tcg_out_opc(s, 0x58 + reg); ! 1147: } ! 1148: ! 1149: /* Generate global QEMU prologue and epilogue code */ ! 1150: void tcg_target_qemu_prologue(TCGContext *s) ! 1151: { ! 1152: int i, frame_size, push_size, stack_addend; ! 1153: ! 1154: /* TB prologue */ ! 1155: /* save all callee saved registers */ ! 1156: for(i = 0; i < ARRAY_SIZE(tcg_target_callee_save_regs); i++) { ! 1157: tcg_out_push(s, tcg_target_callee_save_regs[i]); ! 1158: } ! 1159: /* reserve some stack space */ ! 1160: push_size = 4 + ARRAY_SIZE(tcg_target_callee_save_regs) * 4; ! 1161: frame_size = push_size + TCG_STATIC_CALL_ARGS_SIZE; ! 1162: frame_size = (frame_size + TCG_TARGET_STACK_ALIGN - 1) & ! 1163: ~(TCG_TARGET_STACK_ALIGN - 1); ! 1164: stack_addend = frame_size - push_size; ! 1165: tcg_out_addi(s, TCG_REG_ESP, -stack_addend); ! 1166: ! 1167: tcg_out_modrm(s, 0xff, 4, TCG_REG_EAX); /* jmp *%eax */ ! 1168: ! 1169: /* TB epilogue */ ! 1170: tb_ret_addr = s->code_ptr; ! 1171: tcg_out_addi(s, TCG_REG_ESP, stack_addend); ! 1172: for(i = ARRAY_SIZE(tcg_target_callee_save_regs) - 1; i >= 0; i--) { ! 1173: tcg_out_pop(s, tcg_target_callee_save_regs[i]); ! 1174: } ! 1175: tcg_out8(s, 0xc3); /* ret */ ! 1176: } ! 1177: ! 1178: void tcg_target_init(TCGContext *s) ! 1179: { ! 1180: /* fail safe */ ! 1181: if ((1 << CPU_TLB_ENTRY_BITS) != sizeof(CPUTLBEntry)) ! 1182: tcg_abort(); ! 1183: ! 1184: tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, 0xff); ! 1185: tcg_regset_set32(tcg_target_call_clobber_regs, 0, ! 1186: (1 << TCG_REG_EAX) | ! 1187: (1 << TCG_REG_EDX) | ! 1188: (1 << TCG_REG_ECX)); ! 1189: ! 1190: tcg_regset_clear(s->reserved_regs); ! 1191: tcg_regset_set_reg(s->reserved_regs, TCG_REG_ESP); ! 1192: ! 1193: tcg_add_target_add_op_defs(x86_op_defs); ! 1194: }
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