1 /* 2 * Alpha emulation cpu translation for qemu. 3 * 4 * Copyright (c) 2007 Jocelyn Mayer 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include "qemu/osdep.h" 21 #include "cpu.h" 22 #include "sysemu/cpus.h" 23 #include "sysemu/cpu-timers.h" 24 #include "disas/disas.h" 25 #include "qemu/host-utils.h" 26 #include "exec/exec-all.h" 27 #include "tcg/tcg-op.h" 28 #include "exec/cpu_ldst.h" 29 #include "exec/helper-proto.h" 30 #include "exec/helper-gen.h" 31 #include "trace-tcg.h" 32 #include "exec/translator.h" 33 #include "exec/log.h" 34 35 36 #undef ALPHA_DEBUG_DISAS 37 #define CONFIG_SOFTFLOAT_INLINE 38 39 #ifdef ALPHA_DEBUG_DISAS 40 # define LOG_DISAS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) 41 #else 42 # define LOG_DISAS(...) do { } while (0) 43 #endif 44 45 typedef struct DisasContext DisasContext; 46 struct DisasContext { 47 DisasContextBase base; 48 49 #ifndef CONFIG_USER_ONLY 50 uint64_t palbr; 51 #endif 52 uint32_t tbflags; 53 int mem_idx; 54 55 /* implver and amask values for this CPU. */ 56 int implver; 57 int amask; 58 59 /* Current rounding mode for this TB. */ 60 int tb_rm; 61 /* Current flush-to-zero setting for this TB. */ 62 int tb_ftz; 63 64 /* The set of registers active in the current context. */ 65 TCGv *ir; 66 67 /* Temporaries for $31 and $f31 as source and destination. */ 68 TCGv zero; 69 TCGv sink; 70 /* Temporary for immediate constants. */ 71 TCGv lit; 72 }; 73 74 /* Target-specific return values from translate_one, indicating the 75 state of the TB. Note that DISAS_NEXT indicates that we are not 76 exiting the TB. */ 77 #define DISAS_PC_UPDATED_NOCHAIN DISAS_TARGET_0 78 #define DISAS_PC_UPDATED DISAS_TARGET_1 79 #define DISAS_PC_STALE DISAS_TARGET_2 80 81 /* global register indexes */ 82 static TCGv cpu_std_ir[31]; 83 static TCGv cpu_fir[31]; 84 static TCGv cpu_pc; 85 static TCGv cpu_lock_addr; 86 static TCGv cpu_lock_value; 87 88 #ifndef CONFIG_USER_ONLY 89 static TCGv cpu_pal_ir[31]; 90 #endif 91 92 #include "exec/gen-icount.h" 93 94 void alpha_translate_init(void) 95 { 96 #define DEF_VAR(V) { &cpu_##V, #V, offsetof(CPUAlphaState, V) } 97 98 typedef struct { TCGv *var; const char *name; int ofs; } GlobalVar; 99 static const GlobalVar vars[] = { 100 DEF_VAR(pc), 101 DEF_VAR(lock_addr), 102 DEF_VAR(lock_value), 103 }; 104 105 #undef DEF_VAR 106 107 /* Use the symbolic register names that match the disassembler. */ 108 static const char greg_names[31][4] = { 109 "v0", "t0", "t1", "t2", "t3", "t4", "t5", "t6", 110 "t7", "s0", "s1", "s2", "s3", "s4", "s5", "fp", 111 "a0", "a1", "a2", "a3", "a4", "a5", "t8", "t9", 112 "t10", "t11", "ra", "t12", "at", "gp", "sp" 113 }; 114 static const char freg_names[31][4] = { 115 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", 116 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", 117 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", 118 "f24", "f25", "f26", "f27", "f28", "f29", "f30" 119 }; 120 #ifndef CONFIG_USER_ONLY 121 static const char shadow_names[8][8] = { 122 "pal_t7", "pal_s0", "pal_s1", "pal_s2", 123 "pal_s3", "pal_s4", "pal_s5", "pal_t11" 124 }; 125 #endif 126 127 int i; 128 129 for (i = 0; i < 31; i++) { 130 cpu_std_ir[i] = tcg_global_mem_new_i64(cpu_env, 131 offsetof(CPUAlphaState, ir[i]), 132 greg_names[i]); 133 } 134 135 for (i = 0; i < 31; i++) { 136 cpu_fir[i] = tcg_global_mem_new_i64(cpu_env, 137 offsetof(CPUAlphaState, fir[i]), 138 freg_names[i]); 139 } 140 141 #ifndef CONFIG_USER_ONLY 142 memcpy(cpu_pal_ir, cpu_std_ir, sizeof(cpu_pal_ir)); 143 for (i = 0; i < 8; i++) { 144 int r = (i == 7 ? 25 : i + 8); 145 cpu_pal_ir[r] = tcg_global_mem_new_i64(cpu_env, 146 offsetof(CPUAlphaState, 147 shadow[i]), 148 shadow_names[i]); 149 } 150 #endif 151 152 for (i = 0; i < ARRAY_SIZE(vars); ++i) { 153 const GlobalVar *v = &vars[i]; 154 *v->var = tcg_global_mem_new_i64(cpu_env, v->ofs, v->name); 155 } 156 } 157 158 static TCGv load_zero(DisasContext *ctx) 159 { 160 if (!ctx->zero) { 161 ctx->zero = tcg_const_i64(0); 162 } 163 return ctx->zero; 164 } 165 166 static TCGv dest_sink(DisasContext *ctx) 167 { 168 if (!ctx->sink) { 169 ctx->sink = tcg_temp_new(); 170 } 171 return ctx->sink; 172 } 173 174 static void free_context_temps(DisasContext *ctx) 175 { 176 if (ctx->sink) { 177 tcg_gen_discard_i64(ctx->sink); 178 tcg_temp_free(ctx->sink); 179 ctx->sink = NULL; 180 } 181 if (ctx->zero) { 182 tcg_temp_free(ctx->zero); 183 ctx->zero = NULL; 184 } 185 if (ctx->lit) { 186 tcg_temp_free(ctx->lit); 187 ctx->lit = NULL; 188 } 189 } 190 191 static TCGv load_gpr(DisasContext *ctx, unsigned reg) 192 { 193 if (likely(reg < 31)) { 194 return ctx->ir[reg]; 195 } else { 196 return load_zero(ctx); 197 } 198 } 199 200 static TCGv load_gpr_lit(DisasContext *ctx, unsigned reg, 201 uint8_t lit, bool islit) 202 { 203 if (islit) { 204 ctx->lit = tcg_const_i64(lit); 205 return ctx->lit; 206 } else if (likely(reg < 31)) { 207 return ctx->ir[reg]; 208 } else { 209 return load_zero(ctx); 210 } 211 } 212 213 static TCGv dest_gpr(DisasContext *ctx, unsigned reg) 214 { 215 if (likely(reg < 31)) { 216 return ctx->ir[reg]; 217 } else { 218 return dest_sink(ctx); 219 } 220 } 221 222 static TCGv load_fpr(DisasContext *ctx, unsigned reg) 223 { 224 if (likely(reg < 31)) { 225 return cpu_fir[reg]; 226 } else { 227 return load_zero(ctx); 228 } 229 } 230 231 static TCGv dest_fpr(DisasContext *ctx, unsigned reg) 232 { 233 if (likely(reg < 31)) { 234 return cpu_fir[reg]; 235 } else { 236 return dest_sink(ctx); 237 } 238 } 239 240 static int get_flag_ofs(unsigned shift) 241 { 242 int ofs = offsetof(CPUAlphaState, flags); 243 #ifdef HOST_WORDS_BIGENDIAN 244 ofs += 3 - (shift / 8); 245 #else 246 ofs += shift / 8; 247 #endif 248 return ofs; 249 } 250 251 static void ld_flag_byte(TCGv val, unsigned shift) 252 { 253 tcg_gen_ld8u_i64(val, cpu_env, get_flag_ofs(shift)); 254 } 255 256 static void st_flag_byte(TCGv val, unsigned shift) 257 { 258 tcg_gen_st8_i64(val, cpu_env, get_flag_ofs(shift)); 259 } 260 261 static void gen_excp_1(int exception, int error_code) 262 { 263 TCGv_i32 tmp1, tmp2; 264 265 tmp1 = tcg_const_i32(exception); 266 tmp2 = tcg_const_i32(error_code); 267 gen_helper_excp(cpu_env, tmp1, tmp2); 268 tcg_temp_free_i32(tmp2); 269 tcg_temp_free_i32(tmp1); 270 } 271 272 static DisasJumpType gen_excp(DisasContext *ctx, int exception, int error_code) 273 { 274 tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); 275 gen_excp_1(exception, error_code); 276 return DISAS_NORETURN; 277 } 278 279 static inline DisasJumpType gen_invalid(DisasContext *ctx) 280 { 281 return gen_excp(ctx, EXCP_OPCDEC, 0); 282 } 283 284 static inline void gen_qemu_ldf(TCGv t0, TCGv t1, int flags) 285 { 286 TCGv_i32 tmp32 = tcg_temp_new_i32(); 287 tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL); 288 gen_helper_memory_to_f(t0, tmp32); 289 tcg_temp_free_i32(tmp32); 290 } 291 292 static inline void gen_qemu_ldg(TCGv t0, TCGv t1, int flags) 293 { 294 TCGv tmp = tcg_temp_new(); 295 tcg_gen_qemu_ld_i64(tmp, t1, flags, MO_LEQ); 296 gen_helper_memory_to_g(t0, tmp); 297 tcg_temp_free(tmp); 298 } 299 300 static inline void gen_qemu_lds(TCGv t0, TCGv t1, int flags) 301 { 302 TCGv_i32 tmp32 = tcg_temp_new_i32(); 303 tcg_gen_qemu_ld_i32(tmp32, t1, flags, MO_LEUL); 304 gen_helper_memory_to_s(t0, tmp32); 305 tcg_temp_free_i32(tmp32); 306 } 307 308 static inline void gen_qemu_ldl_l(TCGv t0, TCGv t1, int flags) 309 { 310 tcg_gen_qemu_ld_i64(t0, t1, flags, MO_LESL); 311 tcg_gen_mov_i64(cpu_lock_addr, t1); 312 tcg_gen_mov_i64(cpu_lock_value, t0); 313 } 314 315 static inline void gen_qemu_ldq_l(TCGv t0, TCGv t1, int flags) 316 { 317 tcg_gen_qemu_ld_i64(t0, t1, flags, MO_LEQ); 318 tcg_gen_mov_i64(cpu_lock_addr, t1); 319 tcg_gen_mov_i64(cpu_lock_value, t0); 320 } 321 322 static inline void gen_load_mem(DisasContext *ctx, 323 void (*tcg_gen_qemu_load)(TCGv t0, TCGv t1, 324 int flags), 325 int ra, int rb, int32_t disp16, bool fp, 326 bool clear) 327 { 328 TCGv tmp, addr, va; 329 330 /* LDQ_U with ra $31 is UNOP. Other various loads are forms of 331 prefetches, which we can treat as nops. No worries about 332 missed exceptions here. */ 333 if (unlikely(ra == 31)) { 334 return; 335 } 336 337 tmp = tcg_temp_new(); 338 addr = load_gpr(ctx, rb); 339 340 if (disp16) { 341 tcg_gen_addi_i64(tmp, addr, disp16); 342 addr = tmp; 343 } 344 if (clear) { 345 tcg_gen_andi_i64(tmp, addr, ~0x7); 346 addr = tmp; 347 } 348 349 va = (fp ? cpu_fir[ra] : ctx->ir[ra]); 350 tcg_gen_qemu_load(va, addr, ctx->mem_idx); 351 352 tcg_temp_free(tmp); 353 } 354 355 static inline void gen_qemu_stf(TCGv t0, TCGv t1, int flags) 356 { 357 TCGv_i32 tmp32 = tcg_temp_new_i32(); 358 gen_helper_f_to_memory(tmp32, t0); 359 tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL); 360 tcg_temp_free_i32(tmp32); 361 } 362 363 static inline void gen_qemu_stg(TCGv t0, TCGv t1, int flags) 364 { 365 TCGv tmp = tcg_temp_new(); 366 gen_helper_g_to_memory(tmp, t0); 367 tcg_gen_qemu_st_i64(tmp, t1, flags, MO_LEQ); 368 tcg_temp_free(tmp); 369 } 370 371 static inline void gen_qemu_sts(TCGv t0, TCGv t1, int flags) 372 { 373 TCGv_i32 tmp32 = tcg_temp_new_i32(); 374 gen_helper_s_to_memory(tmp32, t0); 375 tcg_gen_qemu_st_i32(tmp32, t1, flags, MO_LEUL); 376 tcg_temp_free_i32(tmp32); 377 } 378 379 static inline void gen_store_mem(DisasContext *ctx, 380 void (*tcg_gen_qemu_store)(TCGv t0, TCGv t1, 381 int flags), 382 int ra, int rb, int32_t disp16, bool fp, 383 bool clear) 384 { 385 TCGv tmp, addr, va; 386 387 tmp = tcg_temp_new(); 388 addr = load_gpr(ctx, rb); 389 390 if (disp16) { 391 tcg_gen_addi_i64(tmp, addr, disp16); 392 addr = tmp; 393 } 394 if (clear) { 395 tcg_gen_andi_i64(tmp, addr, ~0x7); 396 addr = tmp; 397 } 398 399 va = (fp ? load_fpr(ctx, ra) : load_gpr(ctx, ra)); 400 tcg_gen_qemu_store(va, addr, ctx->mem_idx); 401 402 tcg_temp_free(tmp); 403 } 404 405 static DisasJumpType gen_store_conditional(DisasContext *ctx, int ra, int rb, 406 int32_t disp16, int mem_idx, 407 MemOp op) 408 { 409 TCGLabel *lab_fail, *lab_done; 410 TCGv addr, val; 411 412 addr = tcg_temp_new_i64(); 413 tcg_gen_addi_i64(addr, load_gpr(ctx, rb), disp16); 414 free_context_temps(ctx); 415 416 lab_fail = gen_new_label(); 417 lab_done = gen_new_label(); 418 tcg_gen_brcond_i64(TCG_COND_NE, addr, cpu_lock_addr, lab_fail); 419 tcg_temp_free_i64(addr); 420 421 val = tcg_temp_new_i64(); 422 tcg_gen_atomic_cmpxchg_i64(val, cpu_lock_addr, cpu_lock_value, 423 load_gpr(ctx, ra), mem_idx, op); 424 free_context_temps(ctx); 425 426 if (ra != 31) { 427 tcg_gen_setcond_i64(TCG_COND_EQ, ctx->ir[ra], val, cpu_lock_value); 428 } 429 tcg_temp_free_i64(val); 430 tcg_gen_br(lab_done); 431 432 gen_set_label(lab_fail); 433 if (ra != 31) { 434 tcg_gen_movi_i64(ctx->ir[ra], 0); 435 } 436 437 gen_set_label(lab_done); 438 tcg_gen_movi_i64(cpu_lock_addr, -1); 439 return DISAS_NEXT; 440 } 441 442 static bool in_superpage(DisasContext *ctx, int64_t addr) 443 { 444 #ifndef CONFIG_USER_ONLY 445 return ((ctx->tbflags & ENV_FLAG_PS_USER) == 0 446 && addr >> TARGET_VIRT_ADDR_SPACE_BITS == -1 447 && ((addr >> 41) & 3) == 2); 448 #else 449 return false; 450 #endif 451 } 452 453 static bool use_exit_tb(DisasContext *ctx) 454 { 455 return ((tb_cflags(ctx->base.tb) & CF_LAST_IO) 456 || ctx->base.singlestep_enabled 457 || singlestep); 458 } 459 460 static bool use_goto_tb(DisasContext *ctx, uint64_t dest) 461 { 462 /* Suppress goto_tb in the case of single-steping and IO. */ 463 if (unlikely(use_exit_tb(ctx))) { 464 return false; 465 } 466 #ifndef CONFIG_USER_ONLY 467 /* If the destination is in the superpage, the page perms can't change. */ 468 if (in_superpage(ctx, dest)) { 469 return true; 470 } 471 /* Check for the dest on the same page as the start of the TB. */ 472 return ((ctx->base.tb->pc ^ dest) & TARGET_PAGE_MASK) == 0; 473 #else 474 return true; 475 #endif 476 } 477 478 static DisasJumpType gen_bdirect(DisasContext *ctx, int ra, int32_t disp) 479 { 480 uint64_t dest = ctx->base.pc_next + (disp << 2); 481 482 if (ra != 31) { 483 tcg_gen_movi_i64(ctx->ir[ra], ctx->base.pc_next); 484 } 485 486 /* Notice branch-to-next; used to initialize RA with the PC. */ 487 if (disp == 0) { 488 return 0; 489 } else if (use_goto_tb(ctx, dest)) { 490 tcg_gen_goto_tb(0); 491 tcg_gen_movi_i64(cpu_pc, dest); 492 tcg_gen_exit_tb(ctx->base.tb, 0); 493 return DISAS_NORETURN; 494 } else { 495 tcg_gen_movi_i64(cpu_pc, dest); 496 return DISAS_PC_UPDATED; 497 } 498 } 499 500 static DisasJumpType gen_bcond_internal(DisasContext *ctx, TCGCond cond, 501 TCGv cmp, int32_t disp) 502 { 503 uint64_t dest = ctx->base.pc_next + (disp << 2); 504 TCGLabel *lab_true = gen_new_label(); 505 506 if (use_goto_tb(ctx, dest)) { 507 tcg_gen_brcondi_i64(cond, cmp, 0, lab_true); 508 509 tcg_gen_goto_tb(0); 510 tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); 511 tcg_gen_exit_tb(ctx->base.tb, 0); 512 513 gen_set_label(lab_true); 514 tcg_gen_goto_tb(1); 515 tcg_gen_movi_i64(cpu_pc, dest); 516 tcg_gen_exit_tb(ctx->base.tb, 1); 517 518 return DISAS_NORETURN; 519 } else { 520 TCGv_i64 z = tcg_const_i64(0); 521 TCGv_i64 d = tcg_const_i64(dest); 522 TCGv_i64 p = tcg_const_i64(ctx->base.pc_next); 523 524 tcg_gen_movcond_i64(cond, cpu_pc, cmp, z, d, p); 525 526 tcg_temp_free_i64(z); 527 tcg_temp_free_i64(d); 528 tcg_temp_free_i64(p); 529 return DISAS_PC_UPDATED; 530 } 531 } 532 533 static DisasJumpType gen_bcond(DisasContext *ctx, TCGCond cond, int ra, 534 int32_t disp, int mask) 535 { 536 if (mask) { 537 TCGv tmp = tcg_temp_new(); 538 DisasJumpType ret; 539 540 tcg_gen_andi_i64(tmp, load_gpr(ctx, ra), 1); 541 ret = gen_bcond_internal(ctx, cond, tmp, disp); 542 tcg_temp_free(tmp); 543 return ret; 544 } 545 return gen_bcond_internal(ctx, cond, load_gpr(ctx, ra), disp); 546 } 547 548 /* Fold -0.0 for comparison with COND. */ 549 550 static void gen_fold_mzero(TCGCond cond, TCGv dest, TCGv src) 551 { 552 uint64_t mzero = 1ull << 63; 553 554 switch (cond) { 555 case TCG_COND_LE: 556 case TCG_COND_GT: 557 /* For <= or >, the -0.0 value directly compares the way we want. */ 558 tcg_gen_mov_i64(dest, src); 559 break; 560 561 case TCG_COND_EQ: 562 case TCG_COND_NE: 563 /* For == or !=, we can simply mask off the sign bit and compare. */ 564 tcg_gen_andi_i64(dest, src, mzero - 1); 565 break; 566 567 case TCG_COND_GE: 568 case TCG_COND_LT: 569 /* For >= or <, map -0.0 to +0.0 via comparison and mask. */ 570 tcg_gen_setcondi_i64(TCG_COND_NE, dest, src, mzero); 571 tcg_gen_neg_i64(dest, dest); 572 tcg_gen_and_i64(dest, dest, src); 573 break; 574 575 default: 576 abort(); 577 } 578 } 579 580 static DisasJumpType gen_fbcond(DisasContext *ctx, TCGCond cond, int ra, 581 int32_t disp) 582 { 583 TCGv cmp_tmp = tcg_temp_new(); 584 DisasJumpType ret; 585 586 gen_fold_mzero(cond, cmp_tmp, load_fpr(ctx, ra)); 587 ret = gen_bcond_internal(ctx, cond, cmp_tmp, disp); 588 tcg_temp_free(cmp_tmp); 589 return ret; 590 } 591 592 static void gen_fcmov(DisasContext *ctx, TCGCond cond, int ra, int rb, int rc) 593 { 594 TCGv_i64 va, vb, z; 595 596 z = load_zero(ctx); 597 vb = load_fpr(ctx, rb); 598 va = tcg_temp_new(); 599 gen_fold_mzero(cond, va, load_fpr(ctx, ra)); 600 601 tcg_gen_movcond_i64(cond, dest_fpr(ctx, rc), va, z, vb, load_fpr(ctx, rc)); 602 603 tcg_temp_free(va); 604 } 605 606 #define QUAL_RM_N 0x080 /* Round mode nearest even */ 607 #define QUAL_RM_C 0x000 /* Round mode chopped */ 608 #define QUAL_RM_M 0x040 /* Round mode minus infinity */ 609 #define QUAL_RM_D 0x0c0 /* Round mode dynamic */ 610 #define QUAL_RM_MASK 0x0c0 611 612 #define QUAL_U 0x100 /* Underflow enable (fp output) */ 613 #define QUAL_V 0x100 /* Overflow enable (int output) */ 614 #define QUAL_S 0x400 /* Software completion enable */ 615 #define QUAL_I 0x200 /* Inexact detection enable */ 616 617 static void gen_qual_roundmode(DisasContext *ctx, int fn11) 618 { 619 TCGv_i32 tmp; 620 621 fn11 &= QUAL_RM_MASK; 622 if (fn11 == ctx->tb_rm) { 623 return; 624 } 625 ctx->tb_rm = fn11; 626 627 tmp = tcg_temp_new_i32(); 628 switch (fn11) { 629 case QUAL_RM_N: 630 tcg_gen_movi_i32(tmp, float_round_nearest_even); 631 break; 632 case QUAL_RM_C: 633 tcg_gen_movi_i32(tmp, float_round_to_zero); 634 break; 635 case QUAL_RM_M: 636 tcg_gen_movi_i32(tmp, float_round_down); 637 break; 638 case QUAL_RM_D: 639 tcg_gen_ld8u_i32(tmp, cpu_env, 640 offsetof(CPUAlphaState, fpcr_dyn_round)); 641 break; 642 } 643 644 #if defined(CONFIG_SOFTFLOAT_INLINE) 645 /* ??? The "fpu/softfloat.h" interface is to call set_float_rounding_mode. 646 With CONFIG_SOFTFLOAT that expands to an out-of-line call that just 647 sets the one field. */ 648 tcg_gen_st8_i32(tmp, cpu_env, 649 offsetof(CPUAlphaState, fp_status.float_rounding_mode)); 650 #else 651 gen_helper_setroundmode(tmp); 652 #endif 653 654 tcg_temp_free_i32(tmp); 655 } 656 657 static void gen_qual_flushzero(DisasContext *ctx, int fn11) 658 { 659 TCGv_i32 tmp; 660 661 fn11 &= QUAL_U; 662 if (fn11 == ctx->tb_ftz) { 663 return; 664 } 665 ctx->tb_ftz = fn11; 666 667 tmp = tcg_temp_new_i32(); 668 if (fn11) { 669 /* Underflow is enabled, use the FPCR setting. */ 670 tcg_gen_ld8u_i32(tmp, cpu_env, 671 offsetof(CPUAlphaState, fpcr_flush_to_zero)); 672 } else { 673 /* Underflow is disabled, force flush-to-zero. */ 674 tcg_gen_movi_i32(tmp, 1); 675 } 676 677 #if defined(CONFIG_SOFTFLOAT_INLINE) 678 tcg_gen_st8_i32(tmp, cpu_env, 679 offsetof(CPUAlphaState, fp_status.flush_to_zero)); 680 #else 681 gen_helper_setflushzero(tmp); 682 #endif 683 684 tcg_temp_free_i32(tmp); 685 } 686 687 static TCGv gen_ieee_input(DisasContext *ctx, int reg, int fn11, int is_cmp) 688 { 689 TCGv val; 690 691 if (unlikely(reg == 31)) { 692 val = load_zero(ctx); 693 } else { 694 val = cpu_fir[reg]; 695 if ((fn11 & QUAL_S) == 0) { 696 if (is_cmp) { 697 gen_helper_ieee_input_cmp(cpu_env, val); 698 } else { 699 gen_helper_ieee_input(cpu_env, val); 700 } 701 } else { 702 #ifndef CONFIG_USER_ONLY 703 /* In system mode, raise exceptions for denormals like real 704 hardware. In user mode, proceed as if the OS completion 705 handler is handling the denormal as per spec. */ 706 gen_helper_ieee_input_s(cpu_env, val); 707 #endif 708 } 709 } 710 return val; 711 } 712 713 static void gen_fp_exc_raise(int rc, int fn11) 714 { 715 /* ??? We ought to be able to do something with imprecise exceptions. 716 E.g. notice we're still in the trap shadow of something within the 717 TB and do not generate the code to signal the exception; end the TB 718 when an exception is forced to arrive, either by consumption of a 719 register value or TRAPB or EXCB. */ 720 TCGv_i32 reg, ign; 721 uint32_t ignore = 0; 722 723 if (!(fn11 & QUAL_U)) { 724 /* Note that QUAL_U == QUAL_V, so ignore either. */ 725 ignore |= FPCR_UNF | FPCR_IOV; 726 } 727 if (!(fn11 & QUAL_I)) { 728 ignore |= FPCR_INE; 729 } 730 ign = tcg_const_i32(ignore); 731 732 /* ??? Pass in the regno of the destination so that the helper can 733 set EXC_MASK, which contains a bitmask of destination registers 734 that have caused arithmetic traps. A simple userspace emulation 735 does not require this. We do need it for a guest kernel's entArith, 736 or if we were to do something clever with imprecise exceptions. */ 737 reg = tcg_const_i32(rc + 32); 738 if (fn11 & QUAL_S) { 739 gen_helper_fp_exc_raise_s(cpu_env, ign, reg); 740 } else { 741 gen_helper_fp_exc_raise(cpu_env, ign, reg); 742 } 743 744 tcg_temp_free_i32(reg); 745 tcg_temp_free_i32(ign); 746 } 747 748 static void gen_cvtlq(TCGv vc, TCGv vb) 749 { 750 TCGv tmp = tcg_temp_new(); 751 752 /* The arithmetic right shift here, plus the sign-extended mask below 753 yields a sign-extended result without an explicit ext32s_i64. */ 754 tcg_gen_shri_i64(tmp, vb, 29); 755 tcg_gen_sari_i64(vc, vb, 32); 756 tcg_gen_deposit_i64(vc, vc, tmp, 0, 30); 757 758 tcg_temp_free(tmp); 759 } 760 761 static void gen_ieee_arith2(DisasContext *ctx, 762 void (*helper)(TCGv, TCGv_ptr, TCGv), 763 int rb, int rc, int fn11) 764 { 765 TCGv vb; 766 767 gen_qual_roundmode(ctx, fn11); 768 gen_qual_flushzero(ctx, fn11); 769 770 vb = gen_ieee_input(ctx, rb, fn11, 0); 771 helper(dest_fpr(ctx, rc), cpu_env, vb); 772 773 gen_fp_exc_raise(rc, fn11); 774 } 775 776 #define IEEE_ARITH2(name) \ 777 static inline void glue(gen_, name)(DisasContext *ctx, \ 778 int rb, int rc, int fn11) \ 779 { \ 780 gen_ieee_arith2(ctx, gen_helper_##name, rb, rc, fn11); \ 781 } 782 IEEE_ARITH2(sqrts) 783 IEEE_ARITH2(sqrtt) 784 IEEE_ARITH2(cvtst) 785 IEEE_ARITH2(cvtts) 786 787 static void gen_cvttq(DisasContext *ctx, int rb, int rc, int fn11) 788 { 789 TCGv vb, vc; 790 791 /* No need to set flushzero, since we have an integer output. */ 792 vb = gen_ieee_input(ctx, rb, fn11, 0); 793 vc = dest_fpr(ctx, rc); 794 795 /* Almost all integer conversions use cropped rounding; 796 special case that. */ 797 if ((fn11 & QUAL_RM_MASK) == QUAL_RM_C) { 798 gen_helper_cvttq_c(vc, cpu_env, vb); 799 } else { 800 gen_qual_roundmode(ctx, fn11); 801 gen_helper_cvttq(vc, cpu_env, vb); 802 } 803 gen_fp_exc_raise(rc, fn11); 804 } 805 806 static void gen_ieee_intcvt(DisasContext *ctx, 807 void (*helper)(TCGv, TCGv_ptr, TCGv), 808 int rb, int rc, int fn11) 809 { 810 TCGv vb, vc; 811 812 gen_qual_roundmode(ctx, fn11); 813 vb = load_fpr(ctx, rb); 814 vc = dest_fpr(ctx, rc); 815 816 /* The only exception that can be raised by integer conversion 817 is inexact. Thus we only need to worry about exceptions when 818 inexact handling is requested. */ 819 if (fn11 & QUAL_I) { 820 helper(vc, cpu_env, vb); 821 gen_fp_exc_raise(rc, fn11); 822 } else { 823 helper(vc, cpu_env, vb); 824 } 825 } 826 827 #define IEEE_INTCVT(name) \ 828 static inline void glue(gen_, name)(DisasContext *ctx, \ 829 int rb, int rc, int fn11) \ 830 { \ 831 gen_ieee_intcvt(ctx, gen_helper_##name, rb, rc, fn11); \ 832 } 833 IEEE_INTCVT(cvtqs) 834 IEEE_INTCVT(cvtqt) 835 836 static void gen_cpy_mask(TCGv vc, TCGv va, TCGv vb, bool inv_a, uint64_t mask) 837 { 838 TCGv vmask = tcg_const_i64(mask); 839 TCGv tmp = tcg_temp_new_i64(); 840 841 if (inv_a) { 842 tcg_gen_andc_i64(tmp, vmask, va); 843 } else { 844 tcg_gen_and_i64(tmp, va, vmask); 845 } 846 847 tcg_gen_andc_i64(vc, vb, vmask); 848 tcg_gen_or_i64(vc, vc, tmp); 849 850 tcg_temp_free(vmask); 851 tcg_temp_free(tmp); 852 } 853 854 static void gen_ieee_arith3(DisasContext *ctx, 855 void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv), 856 int ra, int rb, int rc, int fn11) 857 { 858 TCGv va, vb, vc; 859 860 gen_qual_roundmode(ctx, fn11); 861 gen_qual_flushzero(ctx, fn11); 862 863 va = gen_ieee_input(ctx, ra, fn11, 0); 864 vb = gen_ieee_input(ctx, rb, fn11, 0); 865 vc = dest_fpr(ctx, rc); 866 helper(vc, cpu_env, va, vb); 867 868 gen_fp_exc_raise(rc, fn11); 869 } 870 871 #define IEEE_ARITH3(name) \ 872 static inline void glue(gen_, name)(DisasContext *ctx, \ 873 int ra, int rb, int rc, int fn11) \ 874 { \ 875 gen_ieee_arith3(ctx, gen_helper_##name, ra, rb, rc, fn11); \ 876 } 877 IEEE_ARITH3(adds) 878 IEEE_ARITH3(subs) 879 IEEE_ARITH3(muls) 880 IEEE_ARITH3(divs) 881 IEEE_ARITH3(addt) 882 IEEE_ARITH3(subt) 883 IEEE_ARITH3(mult) 884 IEEE_ARITH3(divt) 885 886 static void gen_ieee_compare(DisasContext *ctx, 887 void (*helper)(TCGv, TCGv_ptr, TCGv, TCGv), 888 int ra, int rb, int rc, int fn11) 889 { 890 TCGv va, vb, vc; 891 892 va = gen_ieee_input(ctx, ra, fn11, 1); 893 vb = gen_ieee_input(ctx, rb, fn11, 1); 894 vc = dest_fpr(ctx, rc); 895 helper(vc, cpu_env, va, vb); 896 897 gen_fp_exc_raise(rc, fn11); 898 } 899 900 #define IEEE_CMP3(name) \ 901 static inline void glue(gen_, name)(DisasContext *ctx, \ 902 int ra, int rb, int rc, int fn11) \ 903 { \ 904 gen_ieee_compare(ctx, gen_helper_##name, ra, rb, rc, fn11); \ 905 } 906 IEEE_CMP3(cmptun) 907 IEEE_CMP3(cmpteq) 908 IEEE_CMP3(cmptlt) 909 IEEE_CMP3(cmptle) 910 911 static inline uint64_t zapnot_mask(uint8_t lit) 912 { 913 uint64_t mask = 0; 914 int i; 915 916 for (i = 0; i < 8; ++i) { 917 if ((lit >> i) & 1) { 918 mask |= 0xffull << (i * 8); 919 } 920 } 921 return mask; 922 } 923 924 /* Implement zapnot with an immediate operand, which expands to some 925 form of immediate AND. This is a basic building block in the 926 definition of many of the other byte manipulation instructions. */ 927 static void gen_zapnoti(TCGv dest, TCGv src, uint8_t lit) 928 { 929 switch (lit) { 930 case 0x00: 931 tcg_gen_movi_i64(dest, 0); 932 break; 933 case 0x01: 934 tcg_gen_ext8u_i64(dest, src); 935 break; 936 case 0x03: 937 tcg_gen_ext16u_i64(dest, src); 938 break; 939 case 0x0f: 940 tcg_gen_ext32u_i64(dest, src); 941 break; 942 case 0xff: 943 tcg_gen_mov_i64(dest, src); 944 break; 945 default: 946 tcg_gen_andi_i64(dest, src, zapnot_mask(lit)); 947 break; 948 } 949 } 950 951 /* EXTWH, EXTLH, EXTQH */ 952 static void gen_ext_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 953 uint8_t lit, uint8_t byte_mask) 954 { 955 if (islit) { 956 int pos = (64 - lit * 8) & 0x3f; 957 int len = cto32(byte_mask) * 8; 958 if (pos < len) { 959 tcg_gen_deposit_z_i64(vc, va, pos, len - pos); 960 } else { 961 tcg_gen_movi_i64(vc, 0); 962 } 963 } else { 964 TCGv tmp = tcg_temp_new(); 965 tcg_gen_shli_i64(tmp, load_gpr(ctx, rb), 3); 966 tcg_gen_neg_i64(tmp, tmp); 967 tcg_gen_andi_i64(tmp, tmp, 0x3f); 968 tcg_gen_shl_i64(vc, va, tmp); 969 tcg_temp_free(tmp); 970 } 971 gen_zapnoti(vc, vc, byte_mask); 972 } 973 974 /* EXTBL, EXTWL, EXTLL, EXTQL */ 975 static void gen_ext_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 976 uint8_t lit, uint8_t byte_mask) 977 { 978 if (islit) { 979 int pos = (lit & 7) * 8; 980 int len = cto32(byte_mask) * 8; 981 if (pos + len >= 64) { 982 len = 64 - pos; 983 } 984 tcg_gen_extract_i64(vc, va, pos, len); 985 } else { 986 TCGv tmp = tcg_temp_new(); 987 tcg_gen_andi_i64(tmp, load_gpr(ctx, rb), 7); 988 tcg_gen_shli_i64(tmp, tmp, 3); 989 tcg_gen_shr_i64(vc, va, tmp); 990 tcg_temp_free(tmp); 991 gen_zapnoti(vc, vc, byte_mask); 992 } 993 } 994 995 /* INSWH, INSLH, INSQH */ 996 static void gen_ins_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 997 uint8_t lit, uint8_t byte_mask) 998 { 999 if (islit) { 1000 int pos = 64 - (lit & 7) * 8; 1001 int len = cto32(byte_mask) * 8; 1002 if (pos < len) { 1003 tcg_gen_extract_i64(vc, va, pos, len - pos); 1004 } else { 1005 tcg_gen_movi_i64(vc, 0); 1006 } 1007 } else { 1008 TCGv tmp = tcg_temp_new(); 1009 TCGv shift = tcg_temp_new(); 1010 1011 /* The instruction description has us left-shift the byte mask 1012 and extract bits <15:8> and apply that zap at the end. This 1013 is equivalent to simply performing the zap first and shifting 1014 afterward. */ 1015 gen_zapnoti(tmp, va, byte_mask); 1016 1017 /* If (B & 7) == 0, we need to shift by 64 and leave a zero. Do this 1018 portably by splitting the shift into two parts: shift_count-1 and 1. 1019 Arrange for the -1 by using ones-complement instead of 1020 twos-complement in the negation: ~(B * 8) & 63. */ 1021 1022 tcg_gen_shli_i64(shift, load_gpr(ctx, rb), 3); 1023 tcg_gen_not_i64(shift, shift); 1024 tcg_gen_andi_i64(shift, shift, 0x3f); 1025 1026 tcg_gen_shr_i64(vc, tmp, shift); 1027 tcg_gen_shri_i64(vc, vc, 1); 1028 tcg_temp_free(shift); 1029 tcg_temp_free(tmp); 1030 } 1031 } 1032 1033 /* INSBL, INSWL, INSLL, INSQL */ 1034 static void gen_ins_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 1035 uint8_t lit, uint8_t byte_mask) 1036 { 1037 if (islit) { 1038 int pos = (lit & 7) * 8; 1039 int len = cto32(byte_mask) * 8; 1040 if (pos + len > 64) { 1041 len = 64 - pos; 1042 } 1043 tcg_gen_deposit_z_i64(vc, va, pos, len); 1044 } else { 1045 TCGv tmp = tcg_temp_new(); 1046 TCGv shift = tcg_temp_new(); 1047 1048 /* The instruction description has us left-shift the byte mask 1049 and extract bits <15:8> and apply that zap at the end. This 1050 is equivalent to simply performing the zap first and shifting 1051 afterward. */ 1052 gen_zapnoti(tmp, va, byte_mask); 1053 1054 tcg_gen_andi_i64(shift, load_gpr(ctx, rb), 7); 1055 tcg_gen_shli_i64(shift, shift, 3); 1056 tcg_gen_shl_i64(vc, tmp, shift); 1057 tcg_temp_free(shift); 1058 tcg_temp_free(tmp); 1059 } 1060 } 1061 1062 /* MSKWH, MSKLH, MSKQH */ 1063 static void gen_msk_h(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 1064 uint8_t lit, uint8_t byte_mask) 1065 { 1066 if (islit) { 1067 gen_zapnoti(vc, va, ~((byte_mask << (lit & 7)) >> 8)); 1068 } else { 1069 TCGv shift = tcg_temp_new(); 1070 TCGv mask = tcg_temp_new(); 1071 1072 /* The instruction description is as above, where the byte_mask 1073 is shifted left, and then we extract bits <15:8>. This can be 1074 emulated with a right-shift on the expanded byte mask. This 1075 requires extra care because for an input <2:0> == 0 we need a 1076 shift of 64 bits in order to generate a zero. This is done by 1077 splitting the shift into two parts, the variable shift - 1 1078 followed by a constant 1 shift. The code we expand below is 1079 equivalent to ~(B * 8) & 63. */ 1080 1081 tcg_gen_shli_i64(shift, load_gpr(ctx, rb), 3); 1082 tcg_gen_not_i64(shift, shift); 1083 tcg_gen_andi_i64(shift, shift, 0x3f); 1084 tcg_gen_movi_i64(mask, zapnot_mask (byte_mask)); 1085 tcg_gen_shr_i64(mask, mask, shift); 1086 tcg_gen_shri_i64(mask, mask, 1); 1087 1088 tcg_gen_andc_i64(vc, va, mask); 1089 1090 tcg_temp_free(mask); 1091 tcg_temp_free(shift); 1092 } 1093 } 1094 1095 /* MSKBL, MSKWL, MSKLL, MSKQL */ 1096 static void gen_msk_l(DisasContext *ctx, TCGv vc, TCGv va, int rb, bool islit, 1097 uint8_t lit, uint8_t byte_mask) 1098 { 1099 if (islit) { 1100 gen_zapnoti(vc, va, ~(byte_mask << (lit & 7))); 1101 } else { 1102 TCGv shift = tcg_temp_new(); 1103 TCGv mask = tcg_temp_new(); 1104 1105 tcg_gen_andi_i64(shift, load_gpr(ctx, rb), 7); 1106 tcg_gen_shli_i64(shift, shift, 3); 1107 tcg_gen_movi_i64(mask, zapnot_mask(byte_mask)); 1108 tcg_gen_shl_i64(mask, mask, shift); 1109 1110 tcg_gen_andc_i64(vc, va, mask); 1111 1112 tcg_temp_free(mask); 1113 tcg_temp_free(shift); 1114 } 1115 } 1116 1117 static void gen_rx(DisasContext *ctx, int ra, int set) 1118 { 1119 TCGv tmp; 1120 1121 if (ra != 31) { 1122 ld_flag_byte(ctx->ir[ra], ENV_FLAG_RX_SHIFT); 1123 } 1124 1125 tmp = tcg_const_i64(set); 1126 st_flag_byte(ctx->ir[ra], ENV_FLAG_RX_SHIFT); 1127 tcg_temp_free(tmp); 1128 } 1129 1130 static DisasJumpType gen_call_pal(DisasContext *ctx, int palcode) 1131 { 1132 /* We're emulating OSF/1 PALcode. Many of these are trivial access 1133 to internal cpu registers. */ 1134 1135 /* Unprivileged PAL call */ 1136 if (palcode >= 0x80 && palcode < 0xC0) { 1137 switch (palcode) { 1138 case 0x86: 1139 /* IMB */ 1140 /* No-op inside QEMU. */ 1141 break; 1142 case 0x9E: 1143 /* RDUNIQUE */ 1144 tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env, 1145 offsetof(CPUAlphaState, unique)); 1146 break; 1147 case 0x9F: 1148 /* WRUNIQUE */ 1149 tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env, 1150 offsetof(CPUAlphaState, unique)); 1151 break; 1152 default: 1153 palcode &= 0xbf; 1154 goto do_call_pal; 1155 } 1156 return DISAS_NEXT; 1157 } 1158 1159 #ifndef CONFIG_USER_ONLY 1160 /* Privileged PAL code */ 1161 if (palcode < 0x40 && (ctx->tbflags & ENV_FLAG_PS_USER) == 0) { 1162 switch (palcode) { 1163 case 0x01: 1164 /* CFLUSH */ 1165 /* No-op inside QEMU. */ 1166 break; 1167 case 0x02: 1168 /* DRAINA */ 1169 /* No-op inside QEMU. */ 1170 break; 1171 case 0x2D: 1172 /* WRVPTPTR */ 1173 tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env, 1174 offsetof(CPUAlphaState, vptptr)); 1175 break; 1176 case 0x31: 1177 /* WRVAL */ 1178 tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env, 1179 offsetof(CPUAlphaState, sysval)); 1180 break; 1181 case 0x32: 1182 /* RDVAL */ 1183 tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env, 1184 offsetof(CPUAlphaState, sysval)); 1185 break; 1186 1187 case 0x35: 1188 /* SWPIPL */ 1189 /* Note that we already know we're in kernel mode, so we know 1190 that PS only contains the 3 IPL bits. */ 1191 ld_flag_byte(ctx->ir[IR_V0], ENV_FLAG_PS_SHIFT); 1192 1193 /* But make sure and store only the 3 IPL bits from the user. */ 1194 { 1195 TCGv tmp = tcg_temp_new(); 1196 tcg_gen_andi_i64(tmp, ctx->ir[IR_A0], PS_INT_MASK); 1197 st_flag_byte(tmp, ENV_FLAG_PS_SHIFT); 1198 tcg_temp_free(tmp); 1199 } 1200 1201 /* Allow interrupts to be recognized right away. */ 1202 tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); 1203 return DISAS_PC_UPDATED_NOCHAIN; 1204 1205 case 0x36: 1206 /* RDPS */ 1207 ld_flag_byte(ctx->ir[IR_V0], ENV_FLAG_PS_SHIFT); 1208 break; 1209 1210 case 0x38: 1211 /* WRUSP */ 1212 tcg_gen_st_i64(ctx->ir[IR_A0], cpu_env, 1213 offsetof(CPUAlphaState, usp)); 1214 break; 1215 case 0x3A: 1216 /* RDUSP */ 1217 tcg_gen_ld_i64(ctx->ir[IR_V0], cpu_env, 1218 offsetof(CPUAlphaState, usp)); 1219 break; 1220 case 0x3C: 1221 /* WHAMI */ 1222 tcg_gen_ld32s_i64(ctx->ir[IR_V0], cpu_env, 1223 -offsetof(AlphaCPU, env) + offsetof(CPUState, cpu_index)); 1224 break; 1225 1226 case 0x3E: 1227 /* WTINT */ 1228 { 1229 TCGv_i32 tmp = tcg_const_i32(1); 1230 tcg_gen_st_i32(tmp, cpu_env, -offsetof(AlphaCPU, env) + 1231 offsetof(CPUState, halted)); 1232 tcg_temp_free_i32(tmp); 1233 } 1234 tcg_gen_movi_i64(ctx->ir[IR_V0], 0); 1235 return gen_excp(ctx, EXCP_HALTED, 0); 1236 1237 default: 1238 palcode &= 0x3f; 1239 goto do_call_pal; 1240 } 1241 return DISAS_NEXT; 1242 } 1243 #endif 1244 return gen_invalid(ctx); 1245 1246 do_call_pal: 1247 #ifdef CONFIG_USER_ONLY 1248 return gen_excp(ctx, EXCP_CALL_PAL, palcode); 1249 #else 1250 { 1251 TCGv tmp = tcg_temp_new(); 1252 uint64_t exc_addr = ctx->base.pc_next; 1253 uint64_t entry = ctx->palbr; 1254 1255 if (ctx->tbflags & ENV_FLAG_PAL_MODE) { 1256 exc_addr |= 1; 1257 } else { 1258 tcg_gen_movi_i64(tmp, 1); 1259 st_flag_byte(tmp, ENV_FLAG_PAL_SHIFT); 1260 } 1261 1262 tcg_gen_movi_i64(tmp, exc_addr); 1263 tcg_gen_st_i64(tmp, cpu_env, offsetof(CPUAlphaState, exc_addr)); 1264 tcg_temp_free(tmp); 1265 1266 entry += (palcode & 0x80 1267 ? 0x2000 + (palcode - 0x80) * 64 1268 : 0x1000 + palcode * 64); 1269 1270 /* Since the destination is running in PALmode, we don't really 1271 need the page permissions check. We'll see the existence of 1272 the page when we create the TB, and we'll flush all TBs if 1273 we change the PAL base register. */ 1274 if (!use_exit_tb(ctx)) { 1275 tcg_gen_goto_tb(0); 1276 tcg_gen_movi_i64(cpu_pc, entry); 1277 tcg_gen_exit_tb(ctx->base.tb, 0); 1278 return DISAS_NORETURN; 1279 } else { 1280 tcg_gen_movi_i64(cpu_pc, entry); 1281 return DISAS_PC_UPDATED; 1282 } 1283 } 1284 #endif 1285 } 1286 1287 #ifndef CONFIG_USER_ONLY 1288 1289 #define PR_LONG 0x200000 1290 1291 static int cpu_pr_data(int pr) 1292 { 1293 switch (pr) { 1294 case 2: return offsetof(CPUAlphaState, pcc_ofs) | PR_LONG; 1295 case 3: return offsetof(CPUAlphaState, trap_arg0); 1296 case 4: return offsetof(CPUAlphaState, trap_arg1); 1297 case 5: return offsetof(CPUAlphaState, trap_arg2); 1298 case 6: return offsetof(CPUAlphaState, exc_addr); 1299 case 7: return offsetof(CPUAlphaState, palbr); 1300 case 8: return offsetof(CPUAlphaState, ptbr); 1301 case 9: return offsetof(CPUAlphaState, vptptr); 1302 case 10: return offsetof(CPUAlphaState, unique); 1303 case 11: return offsetof(CPUAlphaState, sysval); 1304 case 12: return offsetof(CPUAlphaState, usp); 1305 1306 case 40 ... 63: 1307 return offsetof(CPUAlphaState, scratch[pr - 40]); 1308 1309 case 251: 1310 return offsetof(CPUAlphaState, alarm_expire); 1311 } 1312 return 0; 1313 } 1314 1315 static DisasJumpType gen_mfpr(DisasContext *ctx, TCGv va, int regno) 1316 { 1317 void (*helper)(TCGv); 1318 int data; 1319 1320 switch (regno) { 1321 case 32 ... 39: 1322 /* Accessing the "non-shadow" general registers. */ 1323 regno = regno == 39 ? 25 : regno - 32 + 8; 1324 tcg_gen_mov_i64(va, cpu_std_ir[regno]); 1325 break; 1326 1327 case 250: /* WALLTIME */ 1328 helper = gen_helper_get_walltime; 1329 goto do_helper; 1330 case 249: /* VMTIME */ 1331 helper = gen_helper_get_vmtime; 1332 do_helper: 1333 if (icount_enabled()) { 1334 gen_io_start(); 1335 helper(va); 1336 return DISAS_PC_STALE; 1337 } else { 1338 helper(va); 1339 } 1340 break; 1341 1342 case 0: /* PS */ 1343 ld_flag_byte(va, ENV_FLAG_PS_SHIFT); 1344 break; 1345 case 1: /* FEN */ 1346 ld_flag_byte(va, ENV_FLAG_FEN_SHIFT); 1347 break; 1348 1349 default: 1350 /* The basic registers are data only, and unknown registers 1351 are read-zero, write-ignore. */ 1352 data = cpu_pr_data(regno); 1353 if (data == 0) { 1354 tcg_gen_movi_i64(va, 0); 1355 } else if (data & PR_LONG) { 1356 tcg_gen_ld32s_i64(va, cpu_env, data & ~PR_LONG); 1357 } else { 1358 tcg_gen_ld_i64(va, cpu_env, data); 1359 } 1360 break; 1361 } 1362 1363 return DISAS_NEXT; 1364 } 1365 1366 static DisasJumpType gen_mtpr(DisasContext *ctx, TCGv vb, int regno) 1367 { 1368 int data; 1369 1370 switch (regno) { 1371 case 255: 1372 /* TBIA */ 1373 gen_helper_tbia(cpu_env); 1374 break; 1375 1376 case 254: 1377 /* TBIS */ 1378 gen_helper_tbis(cpu_env, vb); 1379 break; 1380 1381 case 253: 1382 /* WAIT */ 1383 { 1384 TCGv_i32 tmp = tcg_const_i32(1); 1385 tcg_gen_st_i32(tmp, cpu_env, -offsetof(AlphaCPU, env) + 1386 offsetof(CPUState, halted)); 1387 tcg_temp_free_i32(tmp); 1388 } 1389 return gen_excp(ctx, EXCP_HALTED, 0); 1390 1391 case 252: 1392 /* HALT */ 1393 gen_helper_halt(vb); 1394 return DISAS_PC_STALE; 1395 1396 case 251: 1397 /* ALARM */ 1398 gen_helper_set_alarm(cpu_env, vb); 1399 break; 1400 1401 case 7: 1402 /* PALBR */ 1403 tcg_gen_st_i64(vb, cpu_env, offsetof(CPUAlphaState, palbr)); 1404 /* Changing the PAL base register implies un-chaining all of the TBs 1405 that ended with a CALL_PAL. Since the base register usually only 1406 changes during boot, flushing everything works well. */ 1407 gen_helper_tb_flush(cpu_env); 1408 return DISAS_PC_STALE; 1409 1410 case 32 ... 39: 1411 /* Accessing the "non-shadow" general registers. */ 1412 regno = regno == 39 ? 25 : regno - 32 + 8; 1413 tcg_gen_mov_i64(cpu_std_ir[regno], vb); 1414 break; 1415 1416 case 0: /* PS */ 1417 st_flag_byte(vb, ENV_FLAG_PS_SHIFT); 1418 break; 1419 case 1: /* FEN */ 1420 st_flag_byte(vb, ENV_FLAG_FEN_SHIFT); 1421 break; 1422 1423 default: 1424 /* The basic registers are data only, and unknown registers 1425 are read-zero, write-ignore. */ 1426 data = cpu_pr_data(regno); 1427 if (data != 0) { 1428 if (data & PR_LONG) { 1429 tcg_gen_st32_i64(vb, cpu_env, data & ~PR_LONG); 1430 } else { 1431 tcg_gen_st_i64(vb, cpu_env, data); 1432 } 1433 } 1434 break; 1435 } 1436 1437 return DISAS_NEXT; 1438 } 1439 #endif /* !USER_ONLY*/ 1440 1441 #define REQUIRE_NO_LIT \ 1442 do { \ 1443 if (real_islit) { \ 1444 goto invalid_opc; \ 1445 } \ 1446 } while (0) 1447 1448 #define REQUIRE_AMASK(FLAG) \ 1449 do { \ 1450 if ((ctx->amask & AMASK_##FLAG) == 0) { \ 1451 goto invalid_opc; \ 1452 } \ 1453 } while (0) 1454 1455 #define REQUIRE_TB_FLAG(FLAG) \ 1456 do { \ 1457 if ((ctx->tbflags & (FLAG)) == 0) { \ 1458 goto invalid_opc; \ 1459 } \ 1460 } while (0) 1461 1462 #define REQUIRE_REG_31(WHICH) \ 1463 do { \ 1464 if (WHICH != 31) { \ 1465 goto invalid_opc; \ 1466 } \ 1467 } while (0) 1468 1469 static DisasJumpType translate_one(DisasContext *ctx, uint32_t insn) 1470 { 1471 int32_t disp21, disp16, disp12 __attribute__((unused)); 1472 uint16_t fn11; 1473 uint8_t opc, ra, rb, rc, fpfn, fn7, lit; 1474 bool islit, real_islit; 1475 TCGv va, vb, vc, tmp, tmp2; 1476 TCGv_i32 t32; 1477 DisasJumpType ret; 1478 1479 /* Decode all instruction fields */ 1480 opc = extract32(insn, 26, 6); 1481 ra = extract32(insn, 21, 5); 1482 rb = extract32(insn, 16, 5); 1483 rc = extract32(insn, 0, 5); 1484 real_islit = islit = extract32(insn, 12, 1); 1485 lit = extract32(insn, 13, 8); 1486 1487 disp21 = sextract32(insn, 0, 21); 1488 disp16 = sextract32(insn, 0, 16); 1489 disp12 = sextract32(insn, 0, 12); 1490 1491 fn11 = extract32(insn, 5, 11); 1492 fpfn = extract32(insn, 5, 6); 1493 fn7 = extract32(insn, 5, 7); 1494 1495 if (rb == 31 && !islit) { 1496 islit = true; 1497 lit = 0; 1498 } 1499 1500 ret = DISAS_NEXT; 1501 switch (opc) { 1502 case 0x00: 1503 /* CALL_PAL */ 1504 ret = gen_call_pal(ctx, insn & 0x03ffffff); 1505 break; 1506 case 0x01: 1507 /* OPC01 */ 1508 goto invalid_opc; 1509 case 0x02: 1510 /* OPC02 */ 1511 goto invalid_opc; 1512 case 0x03: 1513 /* OPC03 */ 1514 goto invalid_opc; 1515 case 0x04: 1516 /* OPC04 */ 1517 goto invalid_opc; 1518 case 0x05: 1519 /* OPC05 */ 1520 goto invalid_opc; 1521 case 0x06: 1522 /* OPC06 */ 1523 goto invalid_opc; 1524 case 0x07: 1525 /* OPC07 */ 1526 goto invalid_opc; 1527 1528 case 0x09: 1529 /* LDAH */ 1530 disp16 = (uint32_t)disp16 << 16; 1531 /* fall through */ 1532 case 0x08: 1533 /* LDA */ 1534 va = dest_gpr(ctx, ra); 1535 /* It's worth special-casing immediate loads. */ 1536 if (rb == 31) { 1537 tcg_gen_movi_i64(va, disp16); 1538 } else { 1539 tcg_gen_addi_i64(va, load_gpr(ctx, rb), disp16); 1540 } 1541 break; 1542 1543 case 0x0A: 1544 /* LDBU */ 1545 REQUIRE_AMASK(BWX); 1546 gen_load_mem(ctx, &tcg_gen_qemu_ld8u, ra, rb, disp16, 0, 0); 1547 break; 1548 case 0x0B: 1549 /* LDQ_U */ 1550 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 1); 1551 break; 1552 case 0x0C: 1553 /* LDWU */ 1554 REQUIRE_AMASK(BWX); 1555 gen_load_mem(ctx, &tcg_gen_qemu_ld16u, ra, rb, disp16, 0, 0); 1556 break; 1557 case 0x0D: 1558 /* STW */ 1559 REQUIRE_AMASK(BWX); 1560 gen_store_mem(ctx, &tcg_gen_qemu_st16, ra, rb, disp16, 0, 0); 1561 break; 1562 case 0x0E: 1563 /* STB */ 1564 REQUIRE_AMASK(BWX); 1565 gen_store_mem(ctx, &tcg_gen_qemu_st8, ra, rb, disp16, 0, 0); 1566 break; 1567 case 0x0F: 1568 /* STQ_U */ 1569 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 1); 1570 break; 1571 1572 case 0x10: 1573 vc = dest_gpr(ctx, rc); 1574 vb = load_gpr_lit(ctx, rb, lit, islit); 1575 1576 if (ra == 31) { 1577 if (fn7 == 0x00) { 1578 /* Special case ADDL as SEXTL. */ 1579 tcg_gen_ext32s_i64(vc, vb); 1580 break; 1581 } 1582 if (fn7 == 0x29) { 1583 /* Special case SUBQ as NEGQ. */ 1584 tcg_gen_neg_i64(vc, vb); 1585 break; 1586 } 1587 } 1588 1589 va = load_gpr(ctx, ra); 1590 switch (fn7) { 1591 case 0x00: 1592 /* ADDL */ 1593 tcg_gen_add_i64(vc, va, vb); 1594 tcg_gen_ext32s_i64(vc, vc); 1595 break; 1596 case 0x02: 1597 /* S4ADDL */ 1598 tmp = tcg_temp_new(); 1599 tcg_gen_shli_i64(tmp, va, 2); 1600 tcg_gen_add_i64(tmp, tmp, vb); 1601 tcg_gen_ext32s_i64(vc, tmp); 1602 tcg_temp_free(tmp); 1603 break; 1604 case 0x09: 1605 /* SUBL */ 1606 tcg_gen_sub_i64(vc, va, vb); 1607 tcg_gen_ext32s_i64(vc, vc); 1608 break; 1609 case 0x0B: 1610 /* S4SUBL */ 1611 tmp = tcg_temp_new(); 1612 tcg_gen_shli_i64(tmp, va, 2); 1613 tcg_gen_sub_i64(tmp, tmp, vb); 1614 tcg_gen_ext32s_i64(vc, tmp); 1615 tcg_temp_free(tmp); 1616 break; 1617 case 0x0F: 1618 /* CMPBGE */ 1619 if (ra == 31) { 1620 /* Special case 0 >= X as X == 0. */ 1621 gen_helper_cmpbe0(vc, vb); 1622 } else { 1623 gen_helper_cmpbge(vc, va, vb); 1624 } 1625 break; 1626 case 0x12: 1627 /* S8ADDL */ 1628 tmp = tcg_temp_new(); 1629 tcg_gen_shli_i64(tmp, va, 3); 1630 tcg_gen_add_i64(tmp, tmp, vb); 1631 tcg_gen_ext32s_i64(vc, tmp); 1632 tcg_temp_free(tmp); 1633 break; 1634 case 0x1B: 1635 /* S8SUBL */ 1636 tmp = tcg_temp_new(); 1637 tcg_gen_shli_i64(tmp, va, 3); 1638 tcg_gen_sub_i64(tmp, tmp, vb); 1639 tcg_gen_ext32s_i64(vc, tmp); 1640 tcg_temp_free(tmp); 1641 break; 1642 case 0x1D: 1643 /* CMPULT */ 1644 tcg_gen_setcond_i64(TCG_COND_LTU, vc, va, vb); 1645 break; 1646 case 0x20: 1647 /* ADDQ */ 1648 tcg_gen_add_i64(vc, va, vb); 1649 break; 1650 case 0x22: 1651 /* S4ADDQ */ 1652 tmp = tcg_temp_new(); 1653 tcg_gen_shli_i64(tmp, va, 2); 1654 tcg_gen_add_i64(vc, tmp, vb); 1655 tcg_temp_free(tmp); 1656 break; 1657 case 0x29: 1658 /* SUBQ */ 1659 tcg_gen_sub_i64(vc, va, vb); 1660 break; 1661 case 0x2B: 1662 /* S4SUBQ */ 1663 tmp = tcg_temp_new(); 1664 tcg_gen_shli_i64(tmp, va, 2); 1665 tcg_gen_sub_i64(vc, tmp, vb); 1666 tcg_temp_free(tmp); 1667 break; 1668 case 0x2D: 1669 /* CMPEQ */ 1670 tcg_gen_setcond_i64(TCG_COND_EQ, vc, va, vb); 1671 break; 1672 case 0x32: 1673 /* S8ADDQ */ 1674 tmp = tcg_temp_new(); 1675 tcg_gen_shli_i64(tmp, va, 3); 1676 tcg_gen_add_i64(vc, tmp, vb); 1677 tcg_temp_free(tmp); 1678 break; 1679 case 0x3B: 1680 /* S8SUBQ */ 1681 tmp = tcg_temp_new(); 1682 tcg_gen_shli_i64(tmp, va, 3); 1683 tcg_gen_sub_i64(vc, tmp, vb); 1684 tcg_temp_free(tmp); 1685 break; 1686 case 0x3D: 1687 /* CMPULE */ 1688 tcg_gen_setcond_i64(TCG_COND_LEU, vc, va, vb); 1689 break; 1690 case 0x40: 1691 /* ADDL/V */ 1692 tmp = tcg_temp_new(); 1693 tcg_gen_ext32s_i64(tmp, va); 1694 tcg_gen_ext32s_i64(vc, vb); 1695 tcg_gen_add_i64(tmp, tmp, vc); 1696 tcg_gen_ext32s_i64(vc, tmp); 1697 gen_helper_check_overflow(cpu_env, vc, tmp); 1698 tcg_temp_free(tmp); 1699 break; 1700 case 0x49: 1701 /* SUBL/V */ 1702 tmp = tcg_temp_new(); 1703 tcg_gen_ext32s_i64(tmp, va); 1704 tcg_gen_ext32s_i64(vc, vb); 1705 tcg_gen_sub_i64(tmp, tmp, vc); 1706 tcg_gen_ext32s_i64(vc, tmp); 1707 gen_helper_check_overflow(cpu_env, vc, tmp); 1708 tcg_temp_free(tmp); 1709 break; 1710 case 0x4D: 1711 /* CMPLT */ 1712 tcg_gen_setcond_i64(TCG_COND_LT, vc, va, vb); 1713 break; 1714 case 0x60: 1715 /* ADDQ/V */ 1716 tmp = tcg_temp_new(); 1717 tmp2 = tcg_temp_new(); 1718 tcg_gen_eqv_i64(tmp, va, vb); 1719 tcg_gen_mov_i64(tmp2, va); 1720 tcg_gen_add_i64(vc, va, vb); 1721 tcg_gen_xor_i64(tmp2, tmp2, vc); 1722 tcg_gen_and_i64(tmp, tmp, tmp2); 1723 tcg_gen_shri_i64(tmp, tmp, 63); 1724 tcg_gen_movi_i64(tmp2, 0); 1725 gen_helper_check_overflow(cpu_env, tmp, tmp2); 1726 tcg_temp_free(tmp); 1727 tcg_temp_free(tmp2); 1728 break; 1729 case 0x69: 1730 /* SUBQ/V */ 1731 tmp = tcg_temp_new(); 1732 tmp2 = tcg_temp_new(); 1733 tcg_gen_xor_i64(tmp, va, vb); 1734 tcg_gen_mov_i64(tmp2, va); 1735 tcg_gen_sub_i64(vc, va, vb); 1736 tcg_gen_xor_i64(tmp2, tmp2, vc); 1737 tcg_gen_and_i64(tmp, tmp, tmp2); 1738 tcg_gen_shri_i64(tmp, tmp, 63); 1739 tcg_gen_movi_i64(tmp2, 0); 1740 gen_helper_check_overflow(cpu_env, tmp, tmp2); 1741 tcg_temp_free(tmp); 1742 tcg_temp_free(tmp2); 1743 break; 1744 case 0x6D: 1745 /* CMPLE */ 1746 tcg_gen_setcond_i64(TCG_COND_LE, vc, va, vb); 1747 break; 1748 default: 1749 goto invalid_opc; 1750 } 1751 break; 1752 1753 case 0x11: 1754 if (fn7 == 0x20) { 1755 if (rc == 31) { 1756 /* Special case BIS as NOP. */ 1757 break; 1758 } 1759 if (ra == 31) { 1760 /* Special case BIS as MOV. */ 1761 vc = dest_gpr(ctx, rc); 1762 if (islit) { 1763 tcg_gen_movi_i64(vc, lit); 1764 } else { 1765 tcg_gen_mov_i64(vc, load_gpr(ctx, rb)); 1766 } 1767 break; 1768 } 1769 } 1770 1771 vc = dest_gpr(ctx, rc); 1772 vb = load_gpr_lit(ctx, rb, lit, islit); 1773 1774 if (fn7 == 0x28 && ra == 31) { 1775 /* Special case ORNOT as NOT. */ 1776 tcg_gen_not_i64(vc, vb); 1777 break; 1778 } 1779 1780 va = load_gpr(ctx, ra); 1781 switch (fn7) { 1782 case 0x00: 1783 /* AND */ 1784 tcg_gen_and_i64(vc, va, vb); 1785 break; 1786 case 0x08: 1787 /* BIC */ 1788 tcg_gen_andc_i64(vc, va, vb); 1789 break; 1790 case 0x14: 1791 /* CMOVLBS */ 1792 tmp = tcg_temp_new(); 1793 tcg_gen_andi_i64(tmp, va, 1); 1794 tcg_gen_movcond_i64(TCG_COND_NE, vc, tmp, load_zero(ctx), 1795 vb, load_gpr(ctx, rc)); 1796 tcg_temp_free(tmp); 1797 break; 1798 case 0x16: 1799 /* CMOVLBC */ 1800 tmp = tcg_temp_new(); 1801 tcg_gen_andi_i64(tmp, va, 1); 1802 tcg_gen_movcond_i64(TCG_COND_EQ, vc, tmp, load_zero(ctx), 1803 vb, load_gpr(ctx, rc)); 1804 tcg_temp_free(tmp); 1805 break; 1806 case 0x20: 1807 /* BIS */ 1808 tcg_gen_or_i64(vc, va, vb); 1809 break; 1810 case 0x24: 1811 /* CMOVEQ */ 1812 tcg_gen_movcond_i64(TCG_COND_EQ, vc, va, load_zero(ctx), 1813 vb, load_gpr(ctx, rc)); 1814 break; 1815 case 0x26: 1816 /* CMOVNE */ 1817 tcg_gen_movcond_i64(TCG_COND_NE, vc, va, load_zero(ctx), 1818 vb, load_gpr(ctx, rc)); 1819 break; 1820 case 0x28: 1821 /* ORNOT */ 1822 tcg_gen_orc_i64(vc, va, vb); 1823 break; 1824 case 0x40: 1825 /* XOR */ 1826 tcg_gen_xor_i64(vc, va, vb); 1827 break; 1828 case 0x44: 1829 /* CMOVLT */ 1830 tcg_gen_movcond_i64(TCG_COND_LT, vc, va, load_zero(ctx), 1831 vb, load_gpr(ctx, rc)); 1832 break; 1833 case 0x46: 1834 /* CMOVGE */ 1835 tcg_gen_movcond_i64(TCG_COND_GE, vc, va, load_zero(ctx), 1836 vb, load_gpr(ctx, rc)); 1837 break; 1838 case 0x48: 1839 /* EQV */ 1840 tcg_gen_eqv_i64(vc, va, vb); 1841 break; 1842 case 0x61: 1843 /* AMASK */ 1844 REQUIRE_REG_31(ra); 1845 tcg_gen_andi_i64(vc, vb, ~ctx->amask); 1846 break; 1847 case 0x64: 1848 /* CMOVLE */ 1849 tcg_gen_movcond_i64(TCG_COND_LE, vc, va, load_zero(ctx), 1850 vb, load_gpr(ctx, rc)); 1851 break; 1852 case 0x66: 1853 /* CMOVGT */ 1854 tcg_gen_movcond_i64(TCG_COND_GT, vc, va, load_zero(ctx), 1855 vb, load_gpr(ctx, rc)); 1856 break; 1857 case 0x6C: 1858 /* IMPLVER */ 1859 REQUIRE_REG_31(ra); 1860 tcg_gen_movi_i64(vc, ctx->implver); 1861 break; 1862 default: 1863 goto invalid_opc; 1864 } 1865 break; 1866 1867 case 0x12: 1868 vc = dest_gpr(ctx, rc); 1869 va = load_gpr(ctx, ra); 1870 switch (fn7) { 1871 case 0x02: 1872 /* MSKBL */ 1873 gen_msk_l(ctx, vc, va, rb, islit, lit, 0x01); 1874 break; 1875 case 0x06: 1876 /* EXTBL */ 1877 gen_ext_l(ctx, vc, va, rb, islit, lit, 0x01); 1878 break; 1879 case 0x0B: 1880 /* INSBL */ 1881 gen_ins_l(ctx, vc, va, rb, islit, lit, 0x01); 1882 break; 1883 case 0x12: 1884 /* MSKWL */ 1885 gen_msk_l(ctx, vc, va, rb, islit, lit, 0x03); 1886 break; 1887 case 0x16: 1888 /* EXTWL */ 1889 gen_ext_l(ctx, vc, va, rb, islit, lit, 0x03); 1890 break; 1891 case 0x1B: 1892 /* INSWL */ 1893 gen_ins_l(ctx, vc, va, rb, islit, lit, 0x03); 1894 break; 1895 case 0x22: 1896 /* MSKLL */ 1897 gen_msk_l(ctx, vc, va, rb, islit, lit, 0x0f); 1898 break; 1899 case 0x26: 1900 /* EXTLL */ 1901 gen_ext_l(ctx, vc, va, rb, islit, lit, 0x0f); 1902 break; 1903 case 0x2B: 1904 /* INSLL */ 1905 gen_ins_l(ctx, vc, va, rb, islit, lit, 0x0f); 1906 break; 1907 case 0x30: 1908 /* ZAP */ 1909 if (islit) { 1910 gen_zapnoti(vc, va, ~lit); 1911 } else { 1912 gen_helper_zap(vc, va, load_gpr(ctx, rb)); 1913 } 1914 break; 1915 case 0x31: 1916 /* ZAPNOT */ 1917 if (islit) { 1918 gen_zapnoti(vc, va, lit); 1919 } else { 1920 gen_helper_zapnot(vc, va, load_gpr(ctx, rb)); 1921 } 1922 break; 1923 case 0x32: 1924 /* MSKQL */ 1925 gen_msk_l(ctx, vc, va, rb, islit, lit, 0xff); 1926 break; 1927 case 0x34: 1928 /* SRL */ 1929 if (islit) { 1930 tcg_gen_shri_i64(vc, va, lit & 0x3f); 1931 } else { 1932 tmp = tcg_temp_new(); 1933 vb = load_gpr(ctx, rb); 1934 tcg_gen_andi_i64(tmp, vb, 0x3f); 1935 tcg_gen_shr_i64(vc, va, tmp); 1936 tcg_temp_free(tmp); 1937 } 1938 break; 1939 case 0x36: 1940 /* EXTQL */ 1941 gen_ext_l(ctx, vc, va, rb, islit, lit, 0xff); 1942 break; 1943 case 0x39: 1944 /* SLL */ 1945 if (islit) { 1946 tcg_gen_shli_i64(vc, va, lit & 0x3f); 1947 } else { 1948 tmp = tcg_temp_new(); 1949 vb = load_gpr(ctx, rb); 1950 tcg_gen_andi_i64(tmp, vb, 0x3f); 1951 tcg_gen_shl_i64(vc, va, tmp); 1952 tcg_temp_free(tmp); 1953 } 1954 break; 1955 case 0x3B: 1956 /* INSQL */ 1957 gen_ins_l(ctx, vc, va, rb, islit, lit, 0xff); 1958 break; 1959 case 0x3C: 1960 /* SRA */ 1961 if (islit) { 1962 tcg_gen_sari_i64(vc, va, lit & 0x3f); 1963 } else { 1964 tmp = tcg_temp_new(); 1965 vb = load_gpr(ctx, rb); 1966 tcg_gen_andi_i64(tmp, vb, 0x3f); 1967 tcg_gen_sar_i64(vc, va, tmp); 1968 tcg_temp_free(tmp); 1969 } 1970 break; 1971 case 0x52: 1972 /* MSKWH */ 1973 gen_msk_h(ctx, vc, va, rb, islit, lit, 0x03); 1974 break; 1975 case 0x57: 1976 /* INSWH */ 1977 gen_ins_h(ctx, vc, va, rb, islit, lit, 0x03); 1978 break; 1979 case 0x5A: 1980 /* EXTWH */ 1981 gen_ext_h(ctx, vc, va, rb, islit, lit, 0x03); 1982 break; 1983 case 0x62: 1984 /* MSKLH */ 1985 gen_msk_h(ctx, vc, va, rb, islit, lit, 0x0f); 1986 break; 1987 case 0x67: 1988 /* INSLH */ 1989 gen_ins_h(ctx, vc, va, rb, islit, lit, 0x0f); 1990 break; 1991 case 0x6A: 1992 /* EXTLH */ 1993 gen_ext_h(ctx, vc, va, rb, islit, lit, 0x0f); 1994 break; 1995 case 0x72: 1996 /* MSKQH */ 1997 gen_msk_h(ctx, vc, va, rb, islit, lit, 0xff); 1998 break; 1999 case 0x77: 2000 /* INSQH */ 2001 gen_ins_h(ctx, vc, va, rb, islit, lit, 0xff); 2002 break; 2003 case 0x7A: 2004 /* EXTQH */ 2005 gen_ext_h(ctx, vc, va, rb, islit, lit, 0xff); 2006 break; 2007 default: 2008 goto invalid_opc; 2009 } 2010 break; 2011 2012 case 0x13: 2013 vc = dest_gpr(ctx, rc); 2014 vb = load_gpr_lit(ctx, rb, lit, islit); 2015 va = load_gpr(ctx, ra); 2016 switch (fn7) { 2017 case 0x00: 2018 /* MULL */ 2019 tcg_gen_mul_i64(vc, va, vb); 2020 tcg_gen_ext32s_i64(vc, vc); 2021 break; 2022 case 0x20: 2023 /* MULQ */ 2024 tcg_gen_mul_i64(vc, va, vb); 2025 break; 2026 case 0x30: 2027 /* UMULH */ 2028 tmp = tcg_temp_new(); 2029 tcg_gen_mulu2_i64(tmp, vc, va, vb); 2030 tcg_temp_free(tmp); 2031 break; 2032 case 0x40: 2033 /* MULL/V */ 2034 tmp = tcg_temp_new(); 2035 tcg_gen_ext32s_i64(tmp, va); 2036 tcg_gen_ext32s_i64(vc, vb); 2037 tcg_gen_mul_i64(tmp, tmp, vc); 2038 tcg_gen_ext32s_i64(vc, tmp); 2039 gen_helper_check_overflow(cpu_env, vc, tmp); 2040 tcg_temp_free(tmp); 2041 break; 2042 case 0x60: 2043 /* MULQ/V */ 2044 tmp = tcg_temp_new(); 2045 tmp2 = tcg_temp_new(); 2046 tcg_gen_muls2_i64(vc, tmp, va, vb); 2047 tcg_gen_sari_i64(tmp2, vc, 63); 2048 gen_helper_check_overflow(cpu_env, tmp, tmp2); 2049 tcg_temp_free(tmp); 2050 tcg_temp_free(tmp2); 2051 break; 2052 default: 2053 goto invalid_opc; 2054 } 2055 break; 2056 2057 case 0x14: 2058 REQUIRE_AMASK(FIX); 2059 vc = dest_fpr(ctx, rc); 2060 switch (fpfn) { /* fn11 & 0x3F */ 2061 case 0x04: 2062 /* ITOFS */ 2063 REQUIRE_REG_31(rb); 2064 t32 = tcg_temp_new_i32(); 2065 va = load_gpr(ctx, ra); 2066 tcg_gen_extrl_i64_i32(t32, va); 2067 gen_helper_memory_to_s(vc, t32); 2068 tcg_temp_free_i32(t32); 2069 break; 2070 case 0x0A: 2071 /* SQRTF */ 2072 REQUIRE_REG_31(ra); 2073 vb = load_fpr(ctx, rb); 2074 gen_helper_sqrtf(vc, cpu_env, vb); 2075 break; 2076 case 0x0B: 2077 /* SQRTS */ 2078 REQUIRE_REG_31(ra); 2079 gen_sqrts(ctx, rb, rc, fn11); 2080 break; 2081 case 0x14: 2082 /* ITOFF */ 2083 REQUIRE_REG_31(rb); 2084 t32 = tcg_temp_new_i32(); 2085 va = load_gpr(ctx, ra); 2086 tcg_gen_extrl_i64_i32(t32, va); 2087 gen_helper_memory_to_f(vc, t32); 2088 tcg_temp_free_i32(t32); 2089 break; 2090 case 0x24: 2091 /* ITOFT */ 2092 REQUIRE_REG_31(rb); 2093 va = load_gpr(ctx, ra); 2094 tcg_gen_mov_i64(vc, va); 2095 break; 2096 case 0x2A: 2097 /* SQRTG */ 2098 REQUIRE_REG_31(ra); 2099 vb = load_fpr(ctx, rb); 2100 gen_helper_sqrtg(vc, cpu_env, vb); 2101 break; 2102 case 0x02B: 2103 /* SQRTT */ 2104 REQUIRE_REG_31(ra); 2105 gen_sqrtt(ctx, rb, rc, fn11); 2106 break; 2107 default: 2108 goto invalid_opc; 2109 } 2110 break; 2111 2112 case 0x15: 2113 /* VAX floating point */ 2114 /* XXX: rounding mode and trap are ignored (!) */ 2115 vc = dest_fpr(ctx, rc); 2116 vb = load_fpr(ctx, rb); 2117 va = load_fpr(ctx, ra); 2118 switch (fpfn) { /* fn11 & 0x3F */ 2119 case 0x00: 2120 /* ADDF */ 2121 gen_helper_addf(vc, cpu_env, va, vb); 2122 break; 2123 case 0x01: 2124 /* SUBF */ 2125 gen_helper_subf(vc, cpu_env, va, vb); 2126 break; 2127 case 0x02: 2128 /* MULF */ 2129 gen_helper_mulf(vc, cpu_env, va, vb); 2130 break; 2131 case 0x03: 2132 /* DIVF */ 2133 gen_helper_divf(vc, cpu_env, va, vb); 2134 break; 2135 case 0x1E: 2136 /* CVTDG -- TODO */ 2137 REQUIRE_REG_31(ra); 2138 goto invalid_opc; 2139 case 0x20: 2140 /* ADDG */ 2141 gen_helper_addg(vc, cpu_env, va, vb); 2142 break; 2143 case 0x21: 2144 /* SUBG */ 2145 gen_helper_subg(vc, cpu_env, va, vb); 2146 break; 2147 case 0x22: 2148 /* MULG */ 2149 gen_helper_mulg(vc, cpu_env, va, vb); 2150 break; 2151 case 0x23: 2152 /* DIVG */ 2153 gen_helper_divg(vc, cpu_env, va, vb); 2154 break; 2155 case 0x25: 2156 /* CMPGEQ */ 2157 gen_helper_cmpgeq(vc, cpu_env, va, vb); 2158 break; 2159 case 0x26: 2160 /* CMPGLT */ 2161 gen_helper_cmpglt(vc, cpu_env, va, vb); 2162 break; 2163 case 0x27: 2164 /* CMPGLE */ 2165 gen_helper_cmpgle(vc, cpu_env, va, vb); 2166 break; 2167 case 0x2C: 2168 /* CVTGF */ 2169 REQUIRE_REG_31(ra); 2170 gen_helper_cvtgf(vc, cpu_env, vb); 2171 break; 2172 case 0x2D: 2173 /* CVTGD -- TODO */ 2174 REQUIRE_REG_31(ra); 2175 goto invalid_opc; 2176 case 0x2F: 2177 /* CVTGQ */ 2178 REQUIRE_REG_31(ra); 2179 gen_helper_cvtgq(vc, cpu_env, vb); 2180 break; 2181 case 0x3C: 2182 /* CVTQF */ 2183 REQUIRE_REG_31(ra); 2184 gen_helper_cvtqf(vc, cpu_env, vb); 2185 break; 2186 case 0x3E: 2187 /* CVTQG */ 2188 REQUIRE_REG_31(ra); 2189 gen_helper_cvtqg(vc, cpu_env, vb); 2190 break; 2191 default: 2192 goto invalid_opc; 2193 } 2194 break; 2195 2196 case 0x16: 2197 /* IEEE floating-point */ 2198 switch (fpfn) { /* fn11 & 0x3F */ 2199 case 0x00: 2200 /* ADDS */ 2201 gen_adds(ctx, ra, rb, rc, fn11); 2202 break; 2203 case 0x01: 2204 /* SUBS */ 2205 gen_subs(ctx, ra, rb, rc, fn11); 2206 break; 2207 case 0x02: 2208 /* MULS */ 2209 gen_muls(ctx, ra, rb, rc, fn11); 2210 break; 2211 case 0x03: 2212 /* DIVS */ 2213 gen_divs(ctx, ra, rb, rc, fn11); 2214 break; 2215 case 0x20: 2216 /* ADDT */ 2217 gen_addt(ctx, ra, rb, rc, fn11); 2218 break; 2219 case 0x21: 2220 /* SUBT */ 2221 gen_subt(ctx, ra, rb, rc, fn11); 2222 break; 2223 case 0x22: 2224 /* MULT */ 2225 gen_mult(ctx, ra, rb, rc, fn11); 2226 break; 2227 case 0x23: 2228 /* DIVT */ 2229 gen_divt(ctx, ra, rb, rc, fn11); 2230 break; 2231 case 0x24: 2232 /* CMPTUN */ 2233 gen_cmptun(ctx, ra, rb, rc, fn11); 2234 break; 2235 case 0x25: 2236 /* CMPTEQ */ 2237 gen_cmpteq(ctx, ra, rb, rc, fn11); 2238 break; 2239 case 0x26: 2240 /* CMPTLT */ 2241 gen_cmptlt(ctx, ra, rb, rc, fn11); 2242 break; 2243 case 0x27: 2244 /* CMPTLE */ 2245 gen_cmptle(ctx, ra, rb, rc, fn11); 2246 break; 2247 case 0x2C: 2248 REQUIRE_REG_31(ra); 2249 if (fn11 == 0x2AC || fn11 == 0x6AC) { 2250 /* CVTST */ 2251 gen_cvtst(ctx, rb, rc, fn11); 2252 } else { 2253 /* CVTTS */ 2254 gen_cvtts(ctx, rb, rc, fn11); 2255 } 2256 break; 2257 case 0x2F: 2258 /* CVTTQ */ 2259 REQUIRE_REG_31(ra); 2260 gen_cvttq(ctx, rb, rc, fn11); 2261 break; 2262 case 0x3C: 2263 /* CVTQS */ 2264 REQUIRE_REG_31(ra); 2265 gen_cvtqs(ctx, rb, rc, fn11); 2266 break; 2267 case 0x3E: 2268 /* CVTQT */ 2269 REQUIRE_REG_31(ra); 2270 gen_cvtqt(ctx, rb, rc, fn11); 2271 break; 2272 default: 2273 goto invalid_opc; 2274 } 2275 break; 2276 2277 case 0x17: 2278 switch (fn11) { 2279 case 0x010: 2280 /* CVTLQ */ 2281 REQUIRE_REG_31(ra); 2282 vc = dest_fpr(ctx, rc); 2283 vb = load_fpr(ctx, rb); 2284 gen_cvtlq(vc, vb); 2285 break; 2286 case 0x020: 2287 /* CPYS */ 2288 if (rc == 31) { 2289 /* Special case CPYS as FNOP. */ 2290 } else { 2291 vc = dest_fpr(ctx, rc); 2292 va = load_fpr(ctx, ra); 2293 if (ra == rb) { 2294 /* Special case CPYS as FMOV. */ 2295 tcg_gen_mov_i64(vc, va); 2296 } else { 2297 vb = load_fpr(ctx, rb); 2298 gen_cpy_mask(vc, va, vb, 0, 0x8000000000000000ULL); 2299 } 2300 } 2301 break; 2302 case 0x021: 2303 /* CPYSN */ 2304 vc = dest_fpr(ctx, rc); 2305 vb = load_fpr(ctx, rb); 2306 va = load_fpr(ctx, ra); 2307 gen_cpy_mask(vc, va, vb, 1, 0x8000000000000000ULL); 2308 break; 2309 case 0x022: 2310 /* CPYSE */ 2311 vc = dest_fpr(ctx, rc); 2312 vb = load_fpr(ctx, rb); 2313 va = load_fpr(ctx, ra); 2314 gen_cpy_mask(vc, va, vb, 0, 0xFFF0000000000000ULL); 2315 break; 2316 case 0x024: 2317 /* MT_FPCR */ 2318 va = load_fpr(ctx, ra); 2319 gen_helper_store_fpcr(cpu_env, va); 2320 if (ctx->tb_rm == QUAL_RM_D) { 2321 /* Re-do the copy of the rounding mode to fp_status 2322 the next time we use dynamic rounding. */ 2323 ctx->tb_rm = -1; 2324 } 2325 break; 2326 case 0x025: 2327 /* MF_FPCR */ 2328 va = dest_fpr(ctx, ra); 2329 gen_helper_load_fpcr(va, cpu_env); 2330 break; 2331 case 0x02A: 2332 /* FCMOVEQ */ 2333 gen_fcmov(ctx, TCG_COND_EQ, ra, rb, rc); 2334 break; 2335 case 0x02B: 2336 /* FCMOVNE */ 2337 gen_fcmov(ctx, TCG_COND_NE, ra, rb, rc); 2338 break; 2339 case 0x02C: 2340 /* FCMOVLT */ 2341 gen_fcmov(ctx, TCG_COND_LT, ra, rb, rc); 2342 break; 2343 case 0x02D: 2344 /* FCMOVGE */ 2345 gen_fcmov(ctx, TCG_COND_GE, ra, rb, rc); 2346 break; 2347 case 0x02E: 2348 /* FCMOVLE */ 2349 gen_fcmov(ctx, TCG_COND_LE, ra, rb, rc); 2350 break; 2351 case 0x02F: 2352 /* FCMOVGT */ 2353 gen_fcmov(ctx, TCG_COND_GT, ra, rb, rc); 2354 break; 2355 case 0x030: /* CVTQL */ 2356 case 0x130: /* CVTQL/V */ 2357 case 0x530: /* CVTQL/SV */ 2358 REQUIRE_REG_31(ra); 2359 vc = dest_fpr(ctx, rc); 2360 vb = load_fpr(ctx, rb); 2361 gen_helper_cvtql(vc, cpu_env, vb); 2362 gen_fp_exc_raise(rc, fn11); 2363 break; 2364 default: 2365 goto invalid_opc; 2366 } 2367 break; 2368 2369 case 0x18: 2370 switch ((uint16_t)disp16) { 2371 case 0x0000: 2372 /* TRAPB */ 2373 /* No-op. */ 2374 break; 2375 case 0x0400: 2376 /* EXCB */ 2377 /* No-op. */ 2378 break; 2379 case 0x4000: 2380 /* MB */ 2381 tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC); 2382 break; 2383 case 0x4400: 2384 /* WMB */ 2385 tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC); 2386 break; 2387 case 0x8000: 2388 /* FETCH */ 2389 /* No-op */ 2390 break; 2391 case 0xA000: 2392 /* FETCH_M */ 2393 /* No-op */ 2394 break; 2395 case 0xC000: 2396 /* RPCC */ 2397 va = dest_gpr(ctx, ra); 2398 if (tb_cflags(ctx->base.tb) & CF_USE_ICOUNT) { 2399 gen_io_start(); 2400 gen_helper_load_pcc(va, cpu_env); 2401 ret = DISAS_PC_STALE; 2402 } else { 2403 gen_helper_load_pcc(va, cpu_env); 2404 } 2405 break; 2406 case 0xE000: 2407 /* RC */ 2408 gen_rx(ctx, ra, 0); 2409 break; 2410 case 0xE800: 2411 /* ECB */ 2412 break; 2413 case 0xF000: 2414 /* RS */ 2415 gen_rx(ctx, ra, 1); 2416 break; 2417 case 0xF800: 2418 /* WH64 */ 2419 /* No-op */ 2420 break; 2421 case 0xFC00: 2422 /* WH64EN */ 2423 /* No-op */ 2424 break; 2425 default: 2426 goto invalid_opc; 2427 } 2428 break; 2429 2430 case 0x19: 2431 /* HW_MFPR (PALcode) */ 2432 #ifndef CONFIG_USER_ONLY 2433 REQUIRE_TB_FLAG(ENV_FLAG_PAL_MODE); 2434 va = dest_gpr(ctx, ra); 2435 ret = gen_mfpr(ctx, va, insn & 0xffff); 2436 break; 2437 #else 2438 goto invalid_opc; 2439 #endif 2440 2441 case 0x1A: 2442 /* JMP, JSR, RET, JSR_COROUTINE. These only differ by the branch 2443 prediction stack action, which of course we don't implement. */ 2444 vb = load_gpr(ctx, rb); 2445 tcg_gen_andi_i64(cpu_pc, vb, ~3); 2446 if (ra != 31) { 2447 tcg_gen_movi_i64(ctx->ir[ra], ctx->base.pc_next); 2448 } 2449 ret = DISAS_PC_UPDATED; 2450 break; 2451 2452 case 0x1B: 2453 /* HW_LD (PALcode) */ 2454 #ifndef CONFIG_USER_ONLY 2455 REQUIRE_TB_FLAG(ENV_FLAG_PAL_MODE); 2456 { 2457 TCGv addr = tcg_temp_new(); 2458 vb = load_gpr(ctx, rb); 2459 va = dest_gpr(ctx, ra); 2460 2461 tcg_gen_addi_i64(addr, vb, disp12); 2462 switch ((insn >> 12) & 0xF) { 2463 case 0x0: 2464 /* Longword physical access (hw_ldl/p) */ 2465 tcg_gen_qemu_ld_i64(va, addr, MMU_PHYS_IDX, MO_LESL); 2466 break; 2467 case 0x1: 2468 /* Quadword physical access (hw_ldq/p) */ 2469 tcg_gen_qemu_ld_i64(va, addr, MMU_PHYS_IDX, MO_LEQ); 2470 break; 2471 case 0x2: 2472 /* Longword physical access with lock (hw_ldl_l/p) */ 2473 gen_qemu_ldl_l(va, addr, MMU_PHYS_IDX); 2474 break; 2475 case 0x3: 2476 /* Quadword physical access with lock (hw_ldq_l/p) */ 2477 gen_qemu_ldq_l(va, addr, MMU_PHYS_IDX); 2478 break; 2479 case 0x4: 2480 /* Longword virtual PTE fetch (hw_ldl/v) */ 2481 goto invalid_opc; 2482 case 0x5: 2483 /* Quadword virtual PTE fetch (hw_ldq/v) */ 2484 goto invalid_opc; 2485 break; 2486 case 0x6: 2487 /* Invalid */ 2488 goto invalid_opc; 2489 case 0x7: 2490 /* Invaliid */ 2491 goto invalid_opc; 2492 case 0x8: 2493 /* Longword virtual access (hw_ldl) */ 2494 goto invalid_opc; 2495 case 0x9: 2496 /* Quadword virtual access (hw_ldq) */ 2497 goto invalid_opc; 2498 case 0xA: 2499 /* Longword virtual access with protection check (hw_ldl/w) */ 2500 tcg_gen_qemu_ld_i64(va, addr, MMU_KERNEL_IDX, MO_LESL); 2501 break; 2502 case 0xB: 2503 /* Quadword virtual access with protection check (hw_ldq/w) */ 2504 tcg_gen_qemu_ld_i64(va, addr, MMU_KERNEL_IDX, MO_LEQ); 2505 break; 2506 case 0xC: 2507 /* Longword virtual access with alt access mode (hw_ldl/a)*/ 2508 goto invalid_opc; 2509 case 0xD: 2510 /* Quadword virtual access with alt access mode (hw_ldq/a) */ 2511 goto invalid_opc; 2512 case 0xE: 2513 /* Longword virtual access with alternate access mode and 2514 protection checks (hw_ldl/wa) */ 2515 tcg_gen_qemu_ld_i64(va, addr, MMU_USER_IDX, MO_LESL); 2516 break; 2517 case 0xF: 2518 /* Quadword virtual access with alternate access mode and 2519 protection checks (hw_ldq/wa) */ 2520 tcg_gen_qemu_ld_i64(va, addr, MMU_USER_IDX, MO_LEQ); 2521 break; 2522 } 2523 tcg_temp_free(addr); 2524 break; 2525 } 2526 #else 2527 goto invalid_opc; 2528 #endif 2529 2530 case 0x1C: 2531 vc = dest_gpr(ctx, rc); 2532 if (fn7 == 0x70) { 2533 /* FTOIT */ 2534 REQUIRE_AMASK(FIX); 2535 REQUIRE_REG_31(rb); 2536 va = load_fpr(ctx, ra); 2537 tcg_gen_mov_i64(vc, va); 2538 break; 2539 } else if (fn7 == 0x78) { 2540 /* FTOIS */ 2541 REQUIRE_AMASK(FIX); 2542 REQUIRE_REG_31(rb); 2543 t32 = tcg_temp_new_i32(); 2544 va = load_fpr(ctx, ra); 2545 gen_helper_s_to_memory(t32, va); 2546 tcg_gen_ext_i32_i64(vc, t32); 2547 tcg_temp_free_i32(t32); 2548 break; 2549 } 2550 2551 vb = load_gpr_lit(ctx, rb, lit, islit); 2552 switch (fn7) { 2553 case 0x00: 2554 /* SEXTB */ 2555 REQUIRE_AMASK(BWX); 2556 REQUIRE_REG_31(ra); 2557 tcg_gen_ext8s_i64(vc, vb); 2558 break; 2559 case 0x01: 2560 /* SEXTW */ 2561 REQUIRE_AMASK(BWX); 2562 REQUIRE_REG_31(ra); 2563 tcg_gen_ext16s_i64(vc, vb); 2564 break; 2565 case 0x30: 2566 /* CTPOP */ 2567 REQUIRE_AMASK(CIX); 2568 REQUIRE_REG_31(ra); 2569 REQUIRE_NO_LIT; 2570 tcg_gen_ctpop_i64(vc, vb); 2571 break; 2572 case 0x31: 2573 /* PERR */ 2574 REQUIRE_AMASK(MVI); 2575 REQUIRE_NO_LIT; 2576 va = load_gpr(ctx, ra); 2577 gen_helper_perr(vc, va, vb); 2578 break; 2579 case 0x32: 2580 /* CTLZ */ 2581 REQUIRE_AMASK(CIX); 2582 REQUIRE_REG_31(ra); 2583 REQUIRE_NO_LIT; 2584 tcg_gen_clzi_i64(vc, vb, 64); 2585 break; 2586 case 0x33: 2587 /* CTTZ */ 2588 REQUIRE_AMASK(CIX); 2589 REQUIRE_REG_31(ra); 2590 REQUIRE_NO_LIT; 2591 tcg_gen_ctzi_i64(vc, vb, 64); 2592 break; 2593 case 0x34: 2594 /* UNPKBW */ 2595 REQUIRE_AMASK(MVI); 2596 REQUIRE_REG_31(ra); 2597 REQUIRE_NO_LIT; 2598 gen_helper_unpkbw(vc, vb); 2599 break; 2600 case 0x35: 2601 /* UNPKBL */ 2602 REQUIRE_AMASK(MVI); 2603 REQUIRE_REG_31(ra); 2604 REQUIRE_NO_LIT; 2605 gen_helper_unpkbl(vc, vb); 2606 break; 2607 case 0x36: 2608 /* PKWB */ 2609 REQUIRE_AMASK(MVI); 2610 REQUIRE_REG_31(ra); 2611 REQUIRE_NO_LIT; 2612 gen_helper_pkwb(vc, vb); 2613 break; 2614 case 0x37: 2615 /* PKLB */ 2616 REQUIRE_AMASK(MVI); 2617 REQUIRE_REG_31(ra); 2618 REQUIRE_NO_LIT; 2619 gen_helper_pklb(vc, vb); 2620 break; 2621 case 0x38: 2622 /* MINSB8 */ 2623 REQUIRE_AMASK(MVI); 2624 va = load_gpr(ctx, ra); 2625 gen_helper_minsb8(vc, va, vb); 2626 break; 2627 case 0x39: 2628 /* MINSW4 */ 2629 REQUIRE_AMASK(MVI); 2630 va = load_gpr(ctx, ra); 2631 gen_helper_minsw4(vc, va, vb); 2632 break; 2633 case 0x3A: 2634 /* MINUB8 */ 2635 REQUIRE_AMASK(MVI); 2636 va = load_gpr(ctx, ra); 2637 gen_helper_minub8(vc, va, vb); 2638 break; 2639 case 0x3B: 2640 /* MINUW4 */ 2641 REQUIRE_AMASK(MVI); 2642 va = load_gpr(ctx, ra); 2643 gen_helper_minuw4(vc, va, vb); 2644 break; 2645 case 0x3C: 2646 /* MAXUB8 */ 2647 REQUIRE_AMASK(MVI); 2648 va = load_gpr(ctx, ra); 2649 gen_helper_maxub8(vc, va, vb); 2650 break; 2651 case 0x3D: 2652 /* MAXUW4 */ 2653 REQUIRE_AMASK(MVI); 2654 va = load_gpr(ctx, ra); 2655 gen_helper_maxuw4(vc, va, vb); 2656 break; 2657 case 0x3E: 2658 /* MAXSB8 */ 2659 REQUIRE_AMASK(MVI); 2660 va = load_gpr(ctx, ra); 2661 gen_helper_maxsb8(vc, va, vb); 2662 break; 2663 case 0x3F: 2664 /* MAXSW4 */ 2665 REQUIRE_AMASK(MVI); 2666 va = load_gpr(ctx, ra); 2667 gen_helper_maxsw4(vc, va, vb); 2668 break; 2669 default: 2670 goto invalid_opc; 2671 } 2672 break; 2673 2674 case 0x1D: 2675 /* HW_MTPR (PALcode) */ 2676 #ifndef CONFIG_USER_ONLY 2677 REQUIRE_TB_FLAG(ENV_FLAG_PAL_MODE); 2678 vb = load_gpr(ctx, rb); 2679 ret = gen_mtpr(ctx, vb, insn & 0xffff); 2680 break; 2681 #else 2682 goto invalid_opc; 2683 #endif 2684 2685 case 0x1E: 2686 /* HW_RET (PALcode) */ 2687 #ifndef CONFIG_USER_ONLY 2688 REQUIRE_TB_FLAG(ENV_FLAG_PAL_MODE); 2689 if (rb == 31) { 2690 /* Pre-EV6 CPUs interpreted this as HW_REI, loading the return 2691 address from EXC_ADDR. This turns out to be useful for our 2692 emulation PALcode, so continue to accept it. */ 2693 ctx->lit = vb = tcg_temp_new(); 2694 tcg_gen_ld_i64(vb, cpu_env, offsetof(CPUAlphaState, exc_addr)); 2695 } else { 2696 vb = load_gpr(ctx, rb); 2697 } 2698 tcg_gen_movi_i64(cpu_lock_addr, -1); 2699 tmp = tcg_temp_new(); 2700 tcg_gen_movi_i64(tmp, 0); 2701 st_flag_byte(tmp, ENV_FLAG_RX_SHIFT); 2702 tcg_gen_andi_i64(tmp, vb, 1); 2703 st_flag_byte(tmp, ENV_FLAG_PAL_SHIFT); 2704 tcg_temp_free(tmp); 2705 tcg_gen_andi_i64(cpu_pc, vb, ~3); 2706 /* Allow interrupts to be recognized right away. */ 2707 ret = DISAS_PC_UPDATED_NOCHAIN; 2708 break; 2709 #else 2710 goto invalid_opc; 2711 #endif 2712 2713 case 0x1F: 2714 /* HW_ST (PALcode) */ 2715 #ifndef CONFIG_USER_ONLY 2716 REQUIRE_TB_FLAG(ENV_FLAG_PAL_MODE); 2717 { 2718 switch ((insn >> 12) & 0xF) { 2719 case 0x0: 2720 /* Longword physical access */ 2721 va = load_gpr(ctx, ra); 2722 vb = load_gpr(ctx, rb); 2723 tmp = tcg_temp_new(); 2724 tcg_gen_addi_i64(tmp, vb, disp12); 2725 tcg_gen_qemu_st_i64(va, tmp, MMU_PHYS_IDX, MO_LESL); 2726 tcg_temp_free(tmp); 2727 break; 2728 case 0x1: 2729 /* Quadword physical access */ 2730 va = load_gpr(ctx, ra); 2731 vb = load_gpr(ctx, rb); 2732 tmp = tcg_temp_new(); 2733 tcg_gen_addi_i64(tmp, vb, disp12); 2734 tcg_gen_qemu_st_i64(va, tmp, MMU_PHYS_IDX, MO_LEQ); 2735 tcg_temp_free(tmp); 2736 break; 2737 case 0x2: 2738 /* Longword physical access with lock */ 2739 ret = gen_store_conditional(ctx, ra, rb, disp12, 2740 MMU_PHYS_IDX, MO_LESL); 2741 break; 2742 case 0x3: 2743 /* Quadword physical access with lock */ 2744 ret = gen_store_conditional(ctx, ra, rb, disp12, 2745 MMU_PHYS_IDX, MO_LEQ); 2746 break; 2747 case 0x4: 2748 /* Longword virtual access */ 2749 goto invalid_opc; 2750 case 0x5: 2751 /* Quadword virtual access */ 2752 goto invalid_opc; 2753 case 0x6: 2754 /* Invalid */ 2755 goto invalid_opc; 2756 case 0x7: 2757 /* Invalid */ 2758 goto invalid_opc; 2759 case 0x8: 2760 /* Invalid */ 2761 goto invalid_opc; 2762 case 0x9: 2763 /* Invalid */ 2764 goto invalid_opc; 2765 case 0xA: 2766 /* Invalid */ 2767 goto invalid_opc; 2768 case 0xB: 2769 /* Invalid */ 2770 goto invalid_opc; 2771 case 0xC: 2772 /* Longword virtual access with alternate access mode */ 2773 goto invalid_opc; 2774 case 0xD: 2775 /* Quadword virtual access with alternate access mode */ 2776 goto invalid_opc; 2777 case 0xE: 2778 /* Invalid */ 2779 goto invalid_opc; 2780 case 0xF: 2781 /* Invalid */ 2782 goto invalid_opc; 2783 } 2784 break; 2785 } 2786 #else 2787 goto invalid_opc; 2788 #endif 2789 case 0x20: 2790 /* LDF */ 2791 gen_load_mem(ctx, &gen_qemu_ldf, ra, rb, disp16, 1, 0); 2792 break; 2793 case 0x21: 2794 /* LDG */ 2795 gen_load_mem(ctx, &gen_qemu_ldg, ra, rb, disp16, 1, 0); 2796 break; 2797 case 0x22: 2798 /* LDS */ 2799 gen_load_mem(ctx, &gen_qemu_lds, ra, rb, disp16, 1, 0); 2800 break; 2801 case 0x23: 2802 /* LDT */ 2803 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 1, 0); 2804 break; 2805 case 0x24: 2806 /* STF */ 2807 gen_store_mem(ctx, &gen_qemu_stf, ra, rb, disp16, 1, 0); 2808 break; 2809 case 0x25: 2810 /* STG */ 2811 gen_store_mem(ctx, &gen_qemu_stg, ra, rb, disp16, 1, 0); 2812 break; 2813 case 0x26: 2814 /* STS */ 2815 gen_store_mem(ctx, &gen_qemu_sts, ra, rb, disp16, 1, 0); 2816 break; 2817 case 0x27: 2818 /* STT */ 2819 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 1, 0); 2820 break; 2821 case 0x28: 2822 /* LDL */ 2823 gen_load_mem(ctx, &tcg_gen_qemu_ld32s, ra, rb, disp16, 0, 0); 2824 break; 2825 case 0x29: 2826 /* LDQ */ 2827 gen_load_mem(ctx, &tcg_gen_qemu_ld64, ra, rb, disp16, 0, 0); 2828 break; 2829 case 0x2A: 2830 /* LDL_L */ 2831 gen_load_mem(ctx, &gen_qemu_ldl_l, ra, rb, disp16, 0, 0); 2832 break; 2833 case 0x2B: 2834 /* LDQ_L */ 2835 gen_load_mem(ctx, &gen_qemu_ldq_l, ra, rb, disp16, 0, 0); 2836 break; 2837 case 0x2C: 2838 /* STL */ 2839 gen_store_mem(ctx, &tcg_gen_qemu_st32, ra, rb, disp16, 0, 0); 2840 break; 2841 case 0x2D: 2842 /* STQ */ 2843 gen_store_mem(ctx, &tcg_gen_qemu_st64, ra, rb, disp16, 0, 0); 2844 break; 2845 case 0x2E: 2846 /* STL_C */ 2847 ret = gen_store_conditional(ctx, ra, rb, disp16, 2848 ctx->mem_idx, MO_LESL); 2849 break; 2850 case 0x2F: 2851 /* STQ_C */ 2852 ret = gen_store_conditional(ctx, ra, rb, disp16, 2853 ctx->mem_idx, MO_LEQ); 2854 break; 2855 case 0x30: 2856 /* BR */ 2857 ret = gen_bdirect(ctx, ra, disp21); 2858 break; 2859 case 0x31: /* FBEQ */ 2860 ret = gen_fbcond(ctx, TCG_COND_EQ, ra, disp21); 2861 break; 2862 case 0x32: /* FBLT */ 2863 ret = gen_fbcond(ctx, TCG_COND_LT, ra, disp21); 2864 break; 2865 case 0x33: /* FBLE */ 2866 ret = gen_fbcond(ctx, TCG_COND_LE, ra, disp21); 2867 break; 2868 case 0x34: 2869 /* BSR */ 2870 ret = gen_bdirect(ctx, ra, disp21); 2871 break; 2872 case 0x35: /* FBNE */ 2873 ret = gen_fbcond(ctx, TCG_COND_NE, ra, disp21); 2874 break; 2875 case 0x36: /* FBGE */ 2876 ret = gen_fbcond(ctx, TCG_COND_GE, ra, disp21); 2877 break; 2878 case 0x37: /* FBGT */ 2879 ret = gen_fbcond(ctx, TCG_COND_GT, ra, disp21); 2880 break; 2881 case 0x38: 2882 /* BLBC */ 2883 ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 1); 2884 break; 2885 case 0x39: 2886 /* BEQ */ 2887 ret = gen_bcond(ctx, TCG_COND_EQ, ra, disp21, 0); 2888 break; 2889 case 0x3A: 2890 /* BLT */ 2891 ret = gen_bcond(ctx, TCG_COND_LT, ra, disp21, 0); 2892 break; 2893 case 0x3B: 2894 /* BLE */ 2895 ret = gen_bcond(ctx, TCG_COND_LE, ra, disp21, 0); 2896 break; 2897 case 0x3C: 2898 /* BLBS */ 2899 ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 1); 2900 break; 2901 case 0x3D: 2902 /* BNE */ 2903 ret = gen_bcond(ctx, TCG_COND_NE, ra, disp21, 0); 2904 break; 2905 case 0x3E: 2906 /* BGE */ 2907 ret = gen_bcond(ctx, TCG_COND_GE, ra, disp21, 0); 2908 break; 2909 case 0x3F: 2910 /* BGT */ 2911 ret = gen_bcond(ctx, TCG_COND_GT, ra, disp21, 0); 2912 break; 2913 invalid_opc: 2914 ret = gen_invalid(ctx); 2915 break; 2916 } 2917 2918 return ret; 2919 } 2920 2921 static void alpha_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu) 2922 { 2923 DisasContext *ctx = container_of(dcbase, DisasContext, base); 2924 CPUAlphaState *env = cpu->env_ptr; 2925 int64_t bound, mask; 2926 2927 ctx->tbflags = ctx->base.tb->flags; 2928 ctx->mem_idx = cpu_mmu_index(env, false); 2929 ctx->implver = env->implver; 2930 ctx->amask = env->amask; 2931 2932 #ifdef CONFIG_USER_ONLY 2933 ctx->ir = cpu_std_ir; 2934 #else 2935 ctx->palbr = env->palbr; 2936 ctx->ir = (ctx->tbflags & ENV_FLAG_PAL_MODE ? cpu_pal_ir : cpu_std_ir); 2937 #endif 2938 2939 /* ??? Every TB begins with unset rounding mode, to be initialized on 2940 the first fp insn of the TB. Alternately we could define a proper 2941 default for every TB (e.g. QUAL_RM_N or QUAL_RM_D) and make sure 2942 to reset the FP_STATUS to that default at the end of any TB that 2943 changes the default. We could even (gasp) dynamiclly figure out 2944 what default would be most efficient given the running program. */ 2945 ctx->tb_rm = -1; 2946 /* Similarly for flush-to-zero. */ 2947 ctx->tb_ftz = -1; 2948 2949 ctx->zero = NULL; 2950 ctx->sink = NULL; 2951 ctx->lit = NULL; 2952 2953 /* Bound the number of insns to execute to those left on the page. */ 2954 if (in_superpage(ctx, ctx->base.pc_first)) { 2955 mask = -1ULL << 41; 2956 } else { 2957 mask = TARGET_PAGE_MASK; 2958 } 2959 bound = -(ctx->base.pc_first | mask) / 4; 2960 ctx->base.max_insns = MIN(ctx->base.max_insns, bound); 2961 } 2962 2963 static void alpha_tr_tb_start(DisasContextBase *db, CPUState *cpu) 2964 { 2965 } 2966 2967 static void alpha_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu) 2968 { 2969 tcg_gen_insn_start(dcbase->pc_next); 2970 } 2971 2972 static bool alpha_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu, 2973 const CPUBreakpoint *bp) 2974 { 2975 DisasContext *ctx = container_of(dcbase, DisasContext, base); 2976 2977 ctx->base.is_jmp = gen_excp(ctx, EXCP_DEBUG, 0); 2978 2979 /* The address covered by the breakpoint must be included in 2980 [tb->pc, tb->pc + tb->size) in order to for it to be 2981 properly cleared -- thus we increment the PC here so that 2982 the logic setting tb->size below does the right thing. */ 2983 ctx->base.pc_next += 4; 2984 return true; 2985 } 2986 2987 static void alpha_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu) 2988 { 2989 DisasContext *ctx = container_of(dcbase, DisasContext, base); 2990 CPUAlphaState *env = cpu->env_ptr; 2991 uint32_t insn = translator_ldl(env, ctx->base.pc_next); 2992 2993 ctx->base.pc_next += 4; 2994 ctx->base.is_jmp = translate_one(ctx, insn); 2995 2996 free_context_temps(ctx); 2997 translator_loop_temp_check(&ctx->base); 2998 } 2999 3000 static void alpha_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) 3001 { 3002 DisasContext *ctx = container_of(dcbase, DisasContext, base); 3003 3004 switch (ctx->base.is_jmp) { 3005 case DISAS_NORETURN: 3006 break; 3007 case DISAS_TOO_MANY: 3008 if (use_goto_tb(ctx, ctx->base.pc_next)) { 3009 tcg_gen_goto_tb(0); 3010 tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); 3011 tcg_gen_exit_tb(ctx->base.tb, 0); 3012 } 3013 /* FALLTHRU */ 3014 case DISAS_PC_STALE: 3015 tcg_gen_movi_i64(cpu_pc, ctx->base.pc_next); 3016 /* FALLTHRU */ 3017 case DISAS_PC_UPDATED: 3018 if (!use_exit_tb(ctx)) { 3019 tcg_gen_lookup_and_goto_ptr(); 3020 break; 3021 } 3022 /* FALLTHRU */ 3023 case DISAS_PC_UPDATED_NOCHAIN: 3024 if (ctx->base.singlestep_enabled) { 3025 gen_excp_1(EXCP_DEBUG, 0); 3026 } else { 3027 tcg_gen_exit_tb(NULL, 0); 3028 } 3029 break; 3030 default: 3031 g_assert_not_reached(); 3032 } 3033 } 3034 3035 static void alpha_tr_disas_log(const DisasContextBase *dcbase, CPUState *cpu) 3036 { 3037 qemu_log("IN: %s\n", lookup_symbol(dcbase->pc_first)); 3038 log_target_disas(cpu, dcbase->pc_first, dcbase->tb->size); 3039 } 3040 3041 static const TranslatorOps alpha_tr_ops = { 3042 .init_disas_context = alpha_tr_init_disas_context, 3043 .tb_start = alpha_tr_tb_start, 3044 .insn_start = alpha_tr_insn_start, 3045 .breakpoint_check = alpha_tr_breakpoint_check, 3046 .translate_insn = alpha_tr_translate_insn, 3047 .tb_stop = alpha_tr_tb_stop, 3048 .disas_log = alpha_tr_disas_log, 3049 }; 3050 3051 void gen_intermediate_code(CPUState *cpu, TranslationBlock *tb, int max_insns) 3052 { 3053 DisasContext dc; 3054 translator_loop(&alpha_tr_ops, &dc.base, cpu, tb, max_insns); 3055 } 3056 3057 void restore_state_to_opc(CPUAlphaState *env, TranslationBlock *tb, 3058 target_ulong *data) 3059 { 3060 env->pc = data[0]; 3061 } 3062