1 /* 2 * CRIS emulation for qemu: main translation routines. 3 * 4 * Copyright (c) 2008 AXIS Communications AB 5 * Written by Edgar E. Iglesias. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 /* 22 * FIXME: 23 * The condition code translation is in need of attention. 24 */ 25 26 #include "qemu/osdep.h" 27 #include "cpu.h" 28 #include "disas/disas.h" 29 #include "exec/exec-all.h" 30 #include "tcg/tcg-op.h" 31 #include "exec/helper-proto.h" 32 #include "mmu.h" 33 #include "exec/cpu_ldst.h" 34 #include "exec/translator.h" 35 #include "crisv32-decode.h" 36 #include "qemu/qemu-print.h" 37 #include "exec/helper-gen.h" 38 #include "exec/log.h" 39 40 #define HELPER_H "helper.h" 41 #include "exec/helper-info.c.inc" 42 #undef HELPER_H 43 44 45 #define DISAS_CRIS 0 46 #if DISAS_CRIS 47 # define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) 48 #else 49 # define LOG_DIS(...) do { } while (0) 50 #endif 51 52 #define D(x) 53 #define BUG() (gen_BUG(dc, __FILE__, __LINE__)) 54 #define BUG_ON(x) ({if (x) BUG();}) 55 56 /* 57 * Target-specific is_jmp field values 58 */ 59 /* Only pc was modified dynamically */ 60 #define DISAS_JUMP DISAS_TARGET_0 61 /* Cpu state was modified dynamically, including pc */ 62 #define DISAS_UPDATE DISAS_TARGET_1 63 /* Cpu state was modified dynamically, excluding pc -- use npc */ 64 #define DISAS_UPDATE_NEXT DISAS_TARGET_2 65 /* PC update for delayed branch, see cpustate_changed otherwise */ 66 #define DISAS_DBRANCH DISAS_TARGET_3 67 68 /* Used by the decoder. */ 69 #define EXTRACT_FIELD(src, start, end) \ 70 (((src) >> start) & ((1 << (end - start + 1)) - 1)) 71 72 #define CC_MASK_NZ 0xc 73 #define CC_MASK_NZV 0xe 74 #define CC_MASK_NZVC 0xf 75 #define CC_MASK_RNZV 0x10e 76 77 static TCGv cpu_R[16]; 78 static TCGv cpu_PR[16]; 79 static TCGv cc_x; 80 static TCGv cc_src; 81 static TCGv cc_dest; 82 static TCGv cc_result; 83 static TCGv cc_op; 84 static TCGv cc_size; 85 static TCGv cc_mask; 86 87 static TCGv env_btaken; 88 static TCGv env_btarget; 89 static TCGv env_pc; 90 91 /* This is the state at translation time. */ 92 typedef struct DisasContext { 93 DisasContextBase base; 94 95 CRISCPU *cpu; 96 target_ulong pc, ppc; 97 98 /* Decoder. */ 99 unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc); 100 uint32_t ir; 101 uint32_t opcode; 102 unsigned int op1; 103 unsigned int op2; 104 unsigned int zsize, zzsize; 105 unsigned int mode; 106 unsigned int postinc; 107 108 unsigned int size; 109 unsigned int src; 110 unsigned int dst; 111 unsigned int cond; 112 113 int update_cc; 114 int cc_op; 115 int cc_size; 116 uint32_t cc_mask; 117 118 int cc_size_uptodate; /* -1 invalid or last written value. */ 119 120 int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not up-to-date. */ 121 int flags_uptodate; /* Whether or not $ccs is up-to-date. */ 122 int flags_x; 123 124 int clear_x; /* Clear x after this insn? */ 125 int clear_prefix; /* Clear prefix after this insn? */ 126 int clear_locked_irq; /* Clear the irq lockout. */ 127 int cpustate_changed; 128 unsigned int tb_flags; /* tb dependent flags. */ 129 130 #define JMP_NOJMP 0 131 #define JMP_DIRECT 1 132 #define JMP_DIRECT_CC 2 133 #define JMP_INDIRECT 3 134 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ 135 uint32_t jmp_pc; 136 137 int delayed_branch; 138 } DisasContext; 139 140 static void gen_BUG(DisasContext *dc, const char *file, int line) 141 { 142 cpu_abort(CPU(dc->cpu), "%s:%d pc=%x\n", file, line, dc->pc); 143 } 144 145 static const char * const regnames_v32[] = 146 { 147 "$r0", "$r1", "$r2", "$r3", 148 "$r4", "$r5", "$r6", "$r7", 149 "$r8", "$r9", "$r10", "$r11", 150 "$r12", "$r13", "$sp", "$acr", 151 }; 152 153 static const char * const pregnames_v32[] = 154 { 155 "$bz", "$vr", "$pid", "$srs", 156 "$wz", "$exs", "$eda", "$mof", 157 "$dz", "$ebp", "$erp", "$srp", 158 "$nrp", "$ccs", "$usp", "$spc", 159 }; 160 161 /* We need this table to handle preg-moves with implicit width. */ 162 static const int preg_sizes[] = { 163 1, /* bz. */ 164 1, /* vr. */ 165 4, /* pid. */ 166 1, /* srs. */ 167 2, /* wz. */ 168 4, 4, 4, 169 4, 4, 4, 4, 170 4, 4, 4, 4, 171 }; 172 173 #define t_gen_mov_TN_env(tn, member) \ 174 tcg_gen_ld_tl(tn, cpu_env, offsetof(CPUCRISState, member)) 175 #define t_gen_mov_env_TN(member, tn) \ 176 tcg_gen_st_tl(tn, cpu_env, offsetof(CPUCRISState, member)) 177 #define t_gen_movi_env_TN(member, c) \ 178 t_gen_mov_env_TN(member, tcg_constant_tl(c)) 179 180 static inline void t_gen_mov_TN_preg(TCGv tn, int r) 181 { 182 assert(r >= 0 && r <= 15); 183 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { 184 tcg_gen_movi_tl(tn, 0); 185 } else if (r == PR_VR) { 186 tcg_gen_movi_tl(tn, 32); 187 } else { 188 tcg_gen_mov_tl(tn, cpu_PR[r]); 189 } 190 } 191 static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn) 192 { 193 assert(r >= 0 && r <= 15); 194 if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { 195 return; 196 } else if (r == PR_SRS) { 197 tcg_gen_andi_tl(cpu_PR[r], tn, 3); 198 } else { 199 if (r == PR_PID) { 200 gen_helper_tlb_flush_pid(cpu_env, tn); 201 } 202 if (dc->tb_flags & S_FLAG && r == PR_SPC) { 203 gen_helper_spc_write(cpu_env, tn); 204 } else if (r == PR_CCS) { 205 dc->cpustate_changed = 1; 206 } 207 tcg_gen_mov_tl(cpu_PR[r], tn); 208 } 209 } 210 211 /* Sign extend at translation time. */ 212 static int sign_extend(unsigned int val, unsigned int width) 213 { 214 int sval; 215 216 /* LSL. */ 217 val <<= 31 - width; 218 sval = val; 219 /* ASR. */ 220 sval >>= 31 - width; 221 return sval; 222 } 223 224 static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr, 225 unsigned int size, unsigned int sign) 226 { 227 int r; 228 229 switch (size) { 230 case 4: 231 { 232 r = cpu_ldl_code(env, addr); 233 break; 234 } 235 case 2: 236 { 237 if (sign) { 238 r = cpu_ldsw_code(env, addr); 239 } else { 240 r = cpu_lduw_code(env, addr); 241 } 242 break; 243 } 244 case 1: 245 { 246 if (sign) { 247 r = cpu_ldsb_code(env, addr); 248 } else { 249 r = cpu_ldub_code(env, addr); 250 } 251 break; 252 } 253 default: 254 cpu_abort(CPU(dc->cpu), "Invalid fetch size %d\n", size); 255 break; 256 } 257 return r; 258 } 259 260 static void cris_lock_irq(DisasContext *dc) 261 { 262 dc->clear_locked_irq = 0; 263 t_gen_movi_env_TN(locked_irq, 1); 264 } 265 266 static inline void t_gen_raise_exception(uint32_t index) 267 { 268 gen_helper_raise_exception(cpu_env, tcg_constant_i32(index)); 269 } 270 271 static void t_gen_lsl(TCGv d, TCGv a, TCGv b) 272 { 273 TCGv t0, t_31; 274 275 t0 = tcg_temp_new(); 276 t_31 = tcg_constant_tl(31); 277 tcg_gen_shl_tl(d, a, b); 278 279 tcg_gen_sub_tl(t0, t_31, b); 280 tcg_gen_sar_tl(t0, t0, t_31); 281 tcg_gen_and_tl(t0, t0, d); 282 tcg_gen_xor_tl(d, d, t0); 283 } 284 285 static void t_gen_lsr(TCGv d, TCGv a, TCGv b) 286 { 287 TCGv t0, t_31; 288 289 t0 = tcg_temp_new(); 290 t_31 = tcg_temp_new(); 291 tcg_gen_shr_tl(d, a, b); 292 293 tcg_gen_movi_tl(t_31, 31); 294 tcg_gen_sub_tl(t0, t_31, b); 295 tcg_gen_sar_tl(t0, t0, t_31); 296 tcg_gen_and_tl(t0, t0, d); 297 tcg_gen_xor_tl(d, d, t0); 298 } 299 300 static void t_gen_asr(TCGv d, TCGv a, TCGv b) 301 { 302 TCGv t0, t_31; 303 304 t0 = tcg_temp_new(); 305 t_31 = tcg_temp_new(); 306 tcg_gen_sar_tl(d, a, b); 307 308 tcg_gen_movi_tl(t_31, 31); 309 tcg_gen_sub_tl(t0, t_31, b); 310 tcg_gen_sar_tl(t0, t0, t_31); 311 tcg_gen_or_tl(d, d, t0); 312 } 313 314 static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b) 315 { 316 TCGv t = tcg_temp_new(); 317 318 /* 319 * d <<= 1 320 * if (d >= s) 321 * d -= s; 322 */ 323 tcg_gen_shli_tl(d, a, 1); 324 tcg_gen_sub_tl(t, d, b); 325 tcg_gen_movcond_tl(TCG_COND_GEU, d, d, b, t, d); 326 } 327 328 static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs) 329 { 330 TCGv t; 331 332 /* 333 * d <<= 1 334 * if (n) 335 * d += s; 336 */ 337 t = tcg_temp_new(); 338 tcg_gen_shli_tl(d, a, 1); 339 tcg_gen_shli_tl(t, ccs, 31 - 3); 340 tcg_gen_sari_tl(t, t, 31); 341 tcg_gen_and_tl(t, t, b); 342 tcg_gen_add_tl(d, d, t); 343 } 344 345 /* Extended arithmetic on CRIS. */ 346 static inline void t_gen_add_flag(TCGv d, int flag) 347 { 348 TCGv c; 349 350 c = tcg_temp_new(); 351 t_gen_mov_TN_preg(c, PR_CCS); 352 /* Propagate carry into d. */ 353 tcg_gen_andi_tl(c, c, 1 << flag); 354 if (flag) { 355 tcg_gen_shri_tl(c, c, flag); 356 } 357 tcg_gen_add_tl(d, d, c); 358 } 359 360 static inline void t_gen_addx_carry(DisasContext *dc, TCGv d) 361 { 362 if (dc->flags_x) { 363 TCGv c = tcg_temp_new(); 364 365 t_gen_mov_TN_preg(c, PR_CCS); 366 /* C flag is already at bit 0. */ 367 tcg_gen_andi_tl(c, c, C_FLAG); 368 tcg_gen_add_tl(d, d, c); 369 } 370 } 371 372 static inline void t_gen_subx_carry(DisasContext *dc, TCGv d) 373 { 374 if (dc->flags_x) { 375 TCGv c = tcg_temp_new(); 376 377 t_gen_mov_TN_preg(c, PR_CCS); 378 /* C flag is already at bit 0. */ 379 tcg_gen_andi_tl(c, c, C_FLAG); 380 tcg_gen_sub_tl(d, d, c); 381 } 382 } 383 384 /* Swap the two bytes within each half word of the s operand. 385 T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */ 386 static inline void t_gen_swapb(TCGv d, TCGv s) 387 { 388 TCGv t, org_s; 389 390 t = tcg_temp_new(); 391 org_s = tcg_temp_new(); 392 393 /* d and s may refer to the same object. */ 394 tcg_gen_mov_tl(org_s, s); 395 tcg_gen_shli_tl(t, org_s, 8); 396 tcg_gen_andi_tl(d, t, 0xff00ff00); 397 tcg_gen_shri_tl(t, org_s, 8); 398 tcg_gen_andi_tl(t, t, 0x00ff00ff); 399 tcg_gen_or_tl(d, d, t); 400 } 401 402 /* Swap the halfwords of the s operand. */ 403 static inline void t_gen_swapw(TCGv d, TCGv s) 404 { 405 TCGv t; 406 /* d and s refer the same object. */ 407 t = tcg_temp_new(); 408 tcg_gen_mov_tl(t, s); 409 tcg_gen_shli_tl(d, t, 16); 410 tcg_gen_shri_tl(t, t, 16); 411 tcg_gen_or_tl(d, d, t); 412 } 413 414 /* 415 * Reverse the bits within each byte. 416 * 417 * T0 = ((T0 << 7) & 0x80808080) 418 * | ((T0 << 5) & 0x40404040) 419 * | ((T0 << 3) & 0x20202020) 420 * | ((T0 << 1) & 0x10101010) 421 * | ((T0 >> 1) & 0x08080808) 422 * | ((T0 >> 3) & 0x04040404) 423 * | ((T0 >> 5) & 0x02020202) 424 * | ((T0 >> 7) & 0x01010101); 425 */ 426 static void t_gen_swapr(TCGv d, TCGv s) 427 { 428 static const struct { 429 int shift; /* LSL when positive, LSR when negative. */ 430 uint32_t mask; 431 } bitrev[] = { 432 {7, 0x80808080}, 433 {5, 0x40404040}, 434 {3, 0x20202020}, 435 {1, 0x10101010}, 436 {-1, 0x08080808}, 437 {-3, 0x04040404}, 438 {-5, 0x02020202}, 439 {-7, 0x01010101} 440 }; 441 int i; 442 TCGv t, org_s; 443 444 /* d and s refer the same object. */ 445 t = tcg_temp_new(); 446 org_s = tcg_temp_new(); 447 tcg_gen_mov_tl(org_s, s); 448 449 tcg_gen_shli_tl(t, org_s, bitrev[0].shift); 450 tcg_gen_andi_tl(d, t, bitrev[0].mask); 451 for (i = 1; i < ARRAY_SIZE(bitrev); i++) { 452 if (bitrev[i].shift >= 0) { 453 tcg_gen_shli_tl(t, org_s, bitrev[i].shift); 454 } else { 455 tcg_gen_shri_tl(t, org_s, -bitrev[i].shift); 456 } 457 tcg_gen_andi_tl(t, t, bitrev[i].mask); 458 tcg_gen_or_tl(d, d, t); 459 } 460 } 461 462 static bool use_goto_tb(DisasContext *dc, target_ulong dest) 463 { 464 return translator_use_goto_tb(&dc->base, dest); 465 } 466 467 static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) 468 { 469 if (use_goto_tb(dc, dest)) { 470 tcg_gen_goto_tb(n); 471 tcg_gen_movi_tl(env_pc, dest); 472 tcg_gen_exit_tb(dc->base.tb, n); 473 } else { 474 tcg_gen_movi_tl(env_pc, dest); 475 tcg_gen_lookup_and_goto_ptr(); 476 } 477 } 478 479 static inline void cris_clear_x_flag(DisasContext *dc) 480 { 481 if (dc->flags_x) { 482 dc->flags_uptodate = 0; 483 } 484 dc->flags_x = 0; 485 } 486 487 static void cris_flush_cc_state(DisasContext *dc) 488 { 489 if (dc->cc_size_uptodate != dc->cc_size) { 490 tcg_gen_movi_tl(cc_size, dc->cc_size); 491 dc->cc_size_uptodate = dc->cc_size; 492 } 493 tcg_gen_movi_tl(cc_op, dc->cc_op); 494 tcg_gen_movi_tl(cc_mask, dc->cc_mask); 495 } 496 497 static void cris_evaluate_flags(DisasContext *dc) 498 { 499 if (dc->flags_uptodate) { 500 return; 501 } 502 503 cris_flush_cc_state(dc); 504 505 switch (dc->cc_op) { 506 case CC_OP_MCP: 507 gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env, 508 cpu_PR[PR_CCS], cc_src, 509 cc_dest, cc_result); 510 break; 511 case CC_OP_MULS: 512 gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env, 513 cpu_PR[PR_CCS], cc_result, 514 cpu_PR[PR_MOF]); 515 break; 516 case CC_OP_MULU: 517 gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env, 518 cpu_PR[PR_CCS], cc_result, 519 cpu_PR[PR_MOF]); 520 break; 521 case CC_OP_MOVE: 522 case CC_OP_AND: 523 case CC_OP_OR: 524 case CC_OP_XOR: 525 case CC_OP_ASR: 526 case CC_OP_LSR: 527 case CC_OP_LSL: 528 switch (dc->cc_size) { 529 case 4: 530 gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS], 531 cpu_env, cpu_PR[PR_CCS], cc_result); 532 break; 533 case 2: 534 gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS], 535 cpu_env, cpu_PR[PR_CCS], cc_result); 536 break; 537 default: 538 gen_helper_evaluate_flags(cpu_env); 539 break; 540 } 541 break; 542 case CC_OP_FLAGS: 543 /* live. */ 544 break; 545 case CC_OP_SUB: 546 case CC_OP_CMP: 547 if (dc->cc_size == 4) { 548 gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env, 549 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); 550 } else { 551 gen_helper_evaluate_flags(cpu_env); 552 } 553 554 break; 555 default: 556 switch (dc->cc_size) { 557 case 4: 558 gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env, 559 cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); 560 break; 561 default: 562 gen_helper_evaluate_flags(cpu_env); 563 break; 564 } 565 break; 566 } 567 568 if (dc->flags_x) { 569 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG); 570 } else if (dc->cc_op == CC_OP_FLAGS) { 571 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG); 572 } 573 dc->flags_uptodate = 1; 574 } 575 576 static void cris_cc_mask(DisasContext *dc, unsigned int mask) 577 { 578 uint32_t ovl; 579 580 if (!mask) { 581 dc->update_cc = 0; 582 return; 583 } 584 585 /* Check if we need to evaluate the condition codes due to 586 CC overlaying. */ 587 ovl = (dc->cc_mask ^ mask) & ~mask; 588 if (ovl) { 589 /* TODO: optimize this case. It trigs all the time. */ 590 cris_evaluate_flags(dc); 591 } 592 dc->cc_mask = mask; 593 dc->update_cc = 1; 594 } 595 596 static void cris_update_cc_op(DisasContext *dc, int op, int size) 597 { 598 dc->cc_op = op; 599 dc->cc_size = size; 600 dc->flags_uptodate = 0; 601 } 602 603 static inline void cris_update_cc_x(DisasContext *dc) 604 { 605 /* Save the x flag state at the time of the cc snapshot. */ 606 if (dc->cc_x_uptodate == (2 | dc->flags_x)) { 607 return; 608 } 609 tcg_gen_movi_tl(cc_x, dc->flags_x); 610 dc->cc_x_uptodate = 2 | dc->flags_x; 611 } 612 613 /* Update cc prior to executing ALU op. Needs source operands untouched. */ 614 static void cris_pre_alu_update_cc(DisasContext *dc, int op, 615 TCGv dst, TCGv src, int size) 616 { 617 if (dc->update_cc) { 618 cris_update_cc_op(dc, op, size); 619 tcg_gen_mov_tl(cc_src, src); 620 621 if (op != CC_OP_MOVE 622 && op != CC_OP_AND 623 && op != CC_OP_OR 624 && op != CC_OP_XOR 625 && op != CC_OP_ASR 626 && op != CC_OP_LSR 627 && op != CC_OP_LSL) { 628 tcg_gen_mov_tl(cc_dest, dst); 629 } 630 631 cris_update_cc_x(dc); 632 } 633 } 634 635 /* Update cc after executing ALU op. needs the result. */ 636 static inline void cris_update_result(DisasContext *dc, TCGv res) 637 { 638 if (dc->update_cc) { 639 tcg_gen_mov_tl(cc_result, res); 640 } 641 } 642 643 /* Returns one if the write back stage should execute. */ 644 static void cris_alu_op_exec(DisasContext *dc, int op, 645 TCGv dst, TCGv a, TCGv b, int size) 646 { 647 /* Emit the ALU insns. */ 648 switch (op) { 649 case CC_OP_ADD: 650 tcg_gen_add_tl(dst, a, b); 651 /* Extended arithmetic. */ 652 t_gen_addx_carry(dc, dst); 653 break; 654 case CC_OP_ADDC: 655 tcg_gen_add_tl(dst, a, b); 656 t_gen_add_flag(dst, 0); /* C_FLAG. */ 657 break; 658 case CC_OP_MCP: 659 tcg_gen_add_tl(dst, a, b); 660 t_gen_add_flag(dst, 8); /* R_FLAG. */ 661 break; 662 case CC_OP_SUB: 663 tcg_gen_sub_tl(dst, a, b); 664 /* Extended arithmetic. */ 665 t_gen_subx_carry(dc, dst); 666 break; 667 case CC_OP_MOVE: 668 tcg_gen_mov_tl(dst, b); 669 break; 670 case CC_OP_OR: 671 tcg_gen_or_tl(dst, a, b); 672 break; 673 case CC_OP_AND: 674 tcg_gen_and_tl(dst, a, b); 675 break; 676 case CC_OP_XOR: 677 tcg_gen_xor_tl(dst, a, b); 678 break; 679 case CC_OP_LSL: 680 t_gen_lsl(dst, a, b); 681 break; 682 case CC_OP_LSR: 683 t_gen_lsr(dst, a, b); 684 break; 685 case CC_OP_ASR: 686 t_gen_asr(dst, a, b); 687 break; 688 case CC_OP_NEG: 689 tcg_gen_neg_tl(dst, b); 690 /* Extended arithmetic. */ 691 t_gen_subx_carry(dc, dst); 692 break; 693 case CC_OP_LZ: 694 tcg_gen_clzi_tl(dst, b, TARGET_LONG_BITS); 695 break; 696 case CC_OP_MULS: 697 tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b); 698 break; 699 case CC_OP_MULU: 700 tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b); 701 break; 702 case CC_OP_DSTEP: 703 t_gen_cris_dstep(dst, a, b); 704 break; 705 case CC_OP_MSTEP: 706 t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]); 707 break; 708 case CC_OP_BOUND: 709 tcg_gen_movcond_tl(TCG_COND_LEU, dst, a, b, a, b); 710 break; 711 case CC_OP_CMP: 712 tcg_gen_sub_tl(dst, a, b); 713 /* Extended arithmetic. */ 714 t_gen_subx_carry(dc, dst); 715 break; 716 default: 717 qemu_log_mask(LOG_GUEST_ERROR, "illegal ALU op.\n"); 718 BUG(); 719 break; 720 } 721 722 if (size == 1) { 723 tcg_gen_andi_tl(dst, dst, 0xff); 724 } else if (size == 2) { 725 tcg_gen_andi_tl(dst, dst, 0xffff); 726 } 727 } 728 729 static void cris_alu(DisasContext *dc, int op, 730 TCGv d, TCGv op_a, TCGv op_b, int size) 731 { 732 TCGv tmp; 733 int writeback; 734 735 writeback = 1; 736 737 if (op == CC_OP_CMP) { 738 tmp = tcg_temp_new(); 739 writeback = 0; 740 } else if (size == 4) { 741 tmp = d; 742 writeback = 0; 743 } else { 744 tmp = tcg_temp_new(); 745 } 746 747 748 cris_pre_alu_update_cc(dc, op, op_a, op_b, size); 749 cris_alu_op_exec(dc, op, tmp, op_a, op_b, size); 750 cris_update_result(dc, tmp); 751 752 /* Writeback. */ 753 if (writeback) { 754 if (size == 1) { 755 tcg_gen_andi_tl(d, d, ~0xff); 756 } else { 757 tcg_gen_andi_tl(d, d, ~0xffff); 758 } 759 tcg_gen_or_tl(d, d, tmp); 760 } 761 } 762 763 static int arith_cc(DisasContext *dc) 764 { 765 if (dc->update_cc) { 766 switch (dc->cc_op) { 767 case CC_OP_ADDC: return 1; 768 case CC_OP_ADD: return 1; 769 case CC_OP_SUB: return 1; 770 case CC_OP_DSTEP: return 1; 771 case CC_OP_LSL: return 1; 772 case CC_OP_LSR: return 1; 773 case CC_OP_ASR: return 1; 774 case CC_OP_CMP: return 1; 775 case CC_OP_NEG: return 1; 776 case CC_OP_OR: return 1; 777 case CC_OP_AND: return 1; 778 case CC_OP_XOR: return 1; 779 case CC_OP_MULU: return 1; 780 case CC_OP_MULS: return 1; 781 default: 782 return 0; 783 } 784 } 785 return 0; 786 } 787 788 static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) 789 { 790 int arith_opt, move_opt; 791 792 /* TODO: optimize more condition codes. */ 793 794 /* 795 * If the flags are live, we've gotta look into the bits of CCS. 796 * Otherwise, if we just did an arithmetic operation we try to 797 * evaluate the condition code faster. 798 * 799 * When this function is done, T0 should be non-zero if the condition 800 * code is true. 801 */ 802 arith_opt = arith_cc(dc) && !dc->flags_uptodate; 803 move_opt = (dc->cc_op == CC_OP_MOVE); 804 switch (cond) { 805 case CC_EQ: 806 if ((arith_opt || move_opt) 807 && dc->cc_x_uptodate != (2 | X_FLAG)) { 808 tcg_gen_setcondi_tl(TCG_COND_EQ, cc, cc_result, 0); 809 } else { 810 cris_evaluate_flags(dc); 811 tcg_gen_andi_tl(cc, 812 cpu_PR[PR_CCS], Z_FLAG); 813 } 814 break; 815 case CC_NE: 816 if ((arith_opt || move_opt) 817 && dc->cc_x_uptodate != (2 | X_FLAG)) { 818 tcg_gen_mov_tl(cc, cc_result); 819 } else { 820 cris_evaluate_flags(dc); 821 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], 822 Z_FLAG); 823 tcg_gen_andi_tl(cc, cc, Z_FLAG); 824 } 825 break; 826 case CC_CS: 827 cris_evaluate_flags(dc); 828 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG); 829 break; 830 case CC_CC: 831 cris_evaluate_flags(dc); 832 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG); 833 tcg_gen_andi_tl(cc, cc, C_FLAG); 834 break; 835 case CC_VS: 836 cris_evaluate_flags(dc); 837 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG); 838 break; 839 case CC_VC: 840 cris_evaluate_flags(dc); 841 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], 842 V_FLAG); 843 tcg_gen_andi_tl(cc, cc, V_FLAG); 844 break; 845 case CC_PL: 846 if (arith_opt || move_opt) { 847 int bits = 31; 848 849 if (dc->cc_size == 1) { 850 bits = 7; 851 } else if (dc->cc_size == 2) { 852 bits = 15; 853 } 854 855 tcg_gen_shri_tl(cc, cc_result, bits); 856 tcg_gen_xori_tl(cc, cc, 1); 857 } else { 858 cris_evaluate_flags(dc); 859 tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], 860 N_FLAG); 861 tcg_gen_andi_tl(cc, cc, N_FLAG); 862 } 863 break; 864 case CC_MI: 865 if (arith_opt || move_opt) { 866 int bits = 31; 867 868 if (dc->cc_size == 1) { 869 bits = 7; 870 } else if (dc->cc_size == 2) { 871 bits = 15; 872 } 873 874 tcg_gen_shri_tl(cc, cc_result, bits); 875 tcg_gen_andi_tl(cc, cc, 1); 876 } else { 877 cris_evaluate_flags(dc); 878 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], 879 N_FLAG); 880 } 881 break; 882 case CC_LS: 883 cris_evaluate_flags(dc); 884 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], 885 C_FLAG | Z_FLAG); 886 break; 887 case CC_HI: 888 cris_evaluate_flags(dc); 889 { 890 TCGv tmp; 891 892 tmp = tcg_temp_new(); 893 tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS], 894 C_FLAG | Z_FLAG); 895 /* Overlay the C flag on top of the Z. */ 896 tcg_gen_shli_tl(cc, tmp, 2); 897 tcg_gen_and_tl(cc, tmp, cc); 898 tcg_gen_andi_tl(cc, cc, Z_FLAG); 899 } 900 break; 901 case CC_GE: 902 cris_evaluate_flags(dc); 903 /* Overlay the V flag on top of the N. */ 904 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); 905 tcg_gen_xor_tl(cc, 906 cpu_PR[PR_CCS], cc); 907 tcg_gen_andi_tl(cc, cc, N_FLAG); 908 tcg_gen_xori_tl(cc, cc, N_FLAG); 909 break; 910 case CC_LT: 911 cris_evaluate_flags(dc); 912 /* Overlay the V flag on top of the N. */ 913 tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); 914 tcg_gen_xor_tl(cc, 915 cpu_PR[PR_CCS], cc); 916 tcg_gen_andi_tl(cc, cc, N_FLAG); 917 break; 918 case CC_GT: 919 cris_evaluate_flags(dc); 920 { 921 TCGv n, z; 922 923 n = tcg_temp_new(); 924 z = tcg_temp_new(); 925 926 /* To avoid a shift we overlay everything on 927 the V flag. */ 928 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); 929 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); 930 /* invert Z. */ 931 tcg_gen_xori_tl(z, z, 2); 932 933 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); 934 tcg_gen_xori_tl(n, n, 2); 935 tcg_gen_and_tl(cc, z, n); 936 tcg_gen_andi_tl(cc, cc, 2); 937 } 938 break; 939 case CC_LE: 940 cris_evaluate_flags(dc); 941 { 942 TCGv n, z; 943 944 n = tcg_temp_new(); 945 z = tcg_temp_new(); 946 947 /* To avoid a shift we overlay everything on 948 the V flag. */ 949 tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); 950 tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); 951 952 tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); 953 tcg_gen_or_tl(cc, z, n); 954 tcg_gen_andi_tl(cc, cc, 2); 955 } 956 break; 957 case CC_P: 958 cris_evaluate_flags(dc); 959 tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG); 960 break; 961 case CC_A: 962 tcg_gen_movi_tl(cc, 1); 963 break; 964 default: 965 BUG(); 966 break; 967 }; 968 } 969 970 static void cris_store_direct_jmp(DisasContext *dc) 971 { 972 /* Store the direct jmp state into the cpu-state. */ 973 if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { 974 if (dc->jmp == JMP_DIRECT) { 975 tcg_gen_movi_tl(env_btaken, 1); 976 } 977 tcg_gen_movi_tl(env_btarget, dc->jmp_pc); 978 dc->jmp = JMP_INDIRECT; 979 } 980 } 981 982 static void cris_prepare_cc_branch (DisasContext *dc, 983 int offset, int cond) 984 { 985 /* This helps us re-schedule the micro-code to insns in delay-slots 986 before the actual jump. */ 987 dc->delayed_branch = 2; 988 dc->jmp = JMP_DIRECT_CC; 989 dc->jmp_pc = dc->pc + offset; 990 991 gen_tst_cc(dc, env_btaken, cond); 992 tcg_gen_movi_tl(env_btarget, dc->jmp_pc); 993 } 994 995 996 /* jumps, when the dest is in a live reg for example. Direct should be set 997 when the dest addr is constant to allow tb chaining. */ 998 static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) 999 { 1000 /* This helps us re-schedule the micro-code to insns in delay-slots 1001 before the actual jump. */ 1002 dc->delayed_branch = 2; 1003 dc->jmp = type; 1004 if (type == JMP_INDIRECT) { 1005 tcg_gen_movi_tl(env_btaken, 1); 1006 } 1007 } 1008 1009 static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) 1010 { 1011 int mem_index = cpu_mmu_index(&dc->cpu->env, false); 1012 1013 /* If we get a fault on a delayslot we must keep the jmp state in 1014 the cpu-state to be able to re-execute the jmp. */ 1015 if (dc->delayed_branch == 1) { 1016 cris_store_direct_jmp(dc); 1017 } 1018 1019 tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEUQ); 1020 } 1021 1022 static void gen_load(DisasContext *dc, TCGv dst, TCGv addr, 1023 unsigned int size, int sign) 1024 { 1025 int mem_index = cpu_mmu_index(&dc->cpu->env, false); 1026 1027 /* If we get a fault on a delayslot we must keep the jmp state in 1028 the cpu-state to be able to re-execute the jmp. */ 1029 if (dc->delayed_branch == 1) { 1030 cris_store_direct_jmp(dc); 1031 } 1032 1033 tcg_gen_qemu_ld_tl(dst, addr, mem_index, 1034 MO_TE + ctz32(size) + (sign ? MO_SIGN : 0)); 1035 } 1036 1037 static void gen_store (DisasContext *dc, TCGv addr, TCGv val, 1038 unsigned int size) 1039 { 1040 int mem_index = cpu_mmu_index(&dc->cpu->env, false); 1041 1042 /* If we get a fault on a delayslot we must keep the jmp state in 1043 the cpu-state to be able to re-execute the jmp. */ 1044 if (dc->delayed_branch == 1) { 1045 cris_store_direct_jmp(dc); 1046 } 1047 1048 1049 /* Conditional writes. We only support the kind were X and P are known 1050 at translation time. */ 1051 if (dc->flags_x && (dc->tb_flags & P_FLAG)) { 1052 dc->postinc = 0; 1053 cris_evaluate_flags(dc); 1054 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG); 1055 return; 1056 } 1057 1058 tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size)); 1059 1060 if (dc->flags_x) { 1061 cris_evaluate_flags(dc); 1062 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG); 1063 } 1064 } 1065 1066 static inline void t_gen_sext(TCGv d, TCGv s, int size) 1067 { 1068 if (size == 1) { 1069 tcg_gen_ext8s_i32(d, s); 1070 } else if (size == 2) { 1071 tcg_gen_ext16s_i32(d, s); 1072 } else { 1073 tcg_gen_mov_tl(d, s); 1074 } 1075 } 1076 1077 static inline void t_gen_zext(TCGv d, TCGv s, int size) 1078 { 1079 if (size == 1) { 1080 tcg_gen_ext8u_i32(d, s); 1081 } else if (size == 2) { 1082 tcg_gen_ext16u_i32(d, s); 1083 } else { 1084 tcg_gen_mov_tl(d, s); 1085 } 1086 } 1087 1088 #if DISAS_CRIS 1089 static char memsize_char(int size) 1090 { 1091 switch (size) { 1092 case 1: return 'b'; 1093 case 2: return 'w'; 1094 case 4: return 'd'; 1095 default: 1096 return 'x'; 1097 } 1098 } 1099 #endif 1100 1101 static inline unsigned int memsize_z(DisasContext *dc) 1102 { 1103 return dc->zsize + 1; 1104 } 1105 1106 static inline unsigned int memsize_zz(DisasContext *dc) 1107 { 1108 switch (dc->zzsize) { 1109 case 0: return 1; 1110 case 1: return 2; 1111 default: 1112 return 4; 1113 } 1114 } 1115 1116 static inline void do_postinc (DisasContext *dc, int size) 1117 { 1118 if (dc->postinc) { 1119 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size); 1120 } 1121 } 1122 1123 static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd, 1124 int size, int s_ext, TCGv dst) 1125 { 1126 if (s_ext) { 1127 t_gen_sext(dst, cpu_R[rs], size); 1128 } else { 1129 t_gen_zext(dst, cpu_R[rs], size); 1130 } 1131 } 1132 1133 /* Prepare T0 and T1 for a register alu operation. 1134 s_ext decides if the operand1 should be sign-extended or zero-extended when 1135 needed. */ 1136 static void dec_prep_alu_r(DisasContext *dc, int rs, int rd, 1137 int size, int s_ext, TCGv dst, TCGv src) 1138 { 1139 dec_prep_move_r(dc, rs, rd, size, s_ext, src); 1140 1141 if (s_ext) { 1142 t_gen_sext(dst, cpu_R[rd], size); 1143 } else { 1144 t_gen_zext(dst, cpu_R[rd], size); 1145 } 1146 } 1147 1148 static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc, 1149 int s_ext, int memsize, TCGv dst) 1150 { 1151 unsigned int rs; 1152 uint32_t imm; 1153 int is_imm; 1154 int insn_len = 2; 1155 1156 rs = dc->op1; 1157 is_imm = rs == 15 && dc->postinc; 1158 1159 /* Load [$rs] onto T1. */ 1160 if (is_imm) { 1161 insn_len = 2 + memsize; 1162 if (memsize == 1) { 1163 insn_len++; 1164 } 1165 1166 imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext); 1167 tcg_gen_movi_tl(dst, imm); 1168 dc->postinc = 0; 1169 } else { 1170 cris_flush_cc_state(dc); 1171 gen_load(dc, dst, cpu_R[rs], memsize, 0); 1172 if (s_ext) { 1173 t_gen_sext(dst, dst, memsize); 1174 } else { 1175 t_gen_zext(dst, dst, memsize); 1176 } 1177 } 1178 return insn_len; 1179 } 1180 1181 /* Prepare T0 and T1 for a memory + alu operation. 1182 s_ext decides if the operand1 should be sign-extended or zero-extended when 1183 needed. */ 1184 static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc, 1185 int s_ext, int memsize, TCGv dst, TCGv src) 1186 { 1187 int insn_len; 1188 1189 insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src); 1190 tcg_gen_mov_tl(dst, cpu_R[dc->op2]); 1191 return insn_len; 1192 } 1193 1194 #if DISAS_CRIS 1195 static const char *cc_name(int cc) 1196 { 1197 static const char * const cc_names[16] = { 1198 "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi", 1199 "ls", "hi", "ge", "lt", "gt", "le", "a", "p" 1200 }; 1201 assert(cc < 16); 1202 return cc_names[cc]; 1203 } 1204 #endif 1205 1206 /* Start of insn decoders. */ 1207 1208 static int dec_bccq(CPUCRISState *env, DisasContext *dc) 1209 { 1210 int32_t offset; 1211 int sign; 1212 uint32_t cond = dc->op2; 1213 1214 offset = EXTRACT_FIELD(dc->ir, 1, 7); 1215 sign = EXTRACT_FIELD(dc->ir, 0, 0); 1216 1217 offset *= 2; 1218 offset |= sign << 8; 1219 offset = sign_extend(offset, 8); 1220 1221 LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset); 1222 1223 /* op2 holds the condition-code. */ 1224 cris_cc_mask(dc, 0); 1225 cris_prepare_cc_branch(dc, offset, cond); 1226 return 2; 1227 } 1228 static int dec_addoq(CPUCRISState *env, DisasContext *dc) 1229 { 1230 int32_t imm; 1231 1232 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7); 1233 imm = sign_extend(dc->op1, 7); 1234 1235 LOG_DIS("addoq %d, $r%u\n", imm, dc->op2); 1236 cris_cc_mask(dc, 0); 1237 /* Fetch register operand, */ 1238 tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm); 1239 1240 return 2; 1241 } 1242 static int dec_addq(CPUCRISState *env, DisasContext *dc) 1243 { 1244 TCGv c; 1245 LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2); 1246 1247 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1248 1249 cris_cc_mask(dc, CC_MASK_NZVC); 1250 1251 c = tcg_constant_tl(dc->op1); 1252 cris_alu(dc, CC_OP_ADD, 1253 cpu_R[dc->op2], cpu_R[dc->op2], c, 4); 1254 return 2; 1255 } 1256 static int dec_moveq(CPUCRISState *env, DisasContext *dc) 1257 { 1258 uint32_t imm; 1259 1260 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1261 imm = sign_extend(dc->op1, 5); 1262 LOG_DIS("moveq %d, $r%u\n", imm, dc->op2); 1263 1264 tcg_gen_movi_tl(cpu_R[dc->op2], imm); 1265 return 2; 1266 } 1267 static int dec_subq(CPUCRISState *env, DisasContext *dc) 1268 { 1269 TCGv c; 1270 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1271 1272 LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2); 1273 1274 cris_cc_mask(dc, CC_MASK_NZVC); 1275 c = tcg_constant_tl(dc->op1); 1276 cris_alu(dc, CC_OP_SUB, 1277 cpu_R[dc->op2], cpu_R[dc->op2], c, 4); 1278 return 2; 1279 } 1280 static int dec_cmpq(CPUCRISState *env, DisasContext *dc) 1281 { 1282 uint32_t imm; 1283 TCGv c; 1284 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1285 imm = sign_extend(dc->op1, 5); 1286 1287 LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2); 1288 cris_cc_mask(dc, CC_MASK_NZVC); 1289 1290 c = tcg_constant_tl(imm); 1291 cris_alu(dc, CC_OP_CMP, 1292 cpu_R[dc->op2], cpu_R[dc->op2], c, 4); 1293 return 2; 1294 } 1295 static int dec_andq(CPUCRISState *env, DisasContext *dc) 1296 { 1297 uint32_t imm; 1298 TCGv c; 1299 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1300 imm = sign_extend(dc->op1, 5); 1301 1302 LOG_DIS("andq %d, $r%d\n", imm, dc->op2); 1303 cris_cc_mask(dc, CC_MASK_NZ); 1304 1305 c = tcg_constant_tl(imm); 1306 cris_alu(dc, CC_OP_AND, 1307 cpu_R[dc->op2], cpu_R[dc->op2], c, 4); 1308 return 2; 1309 } 1310 static int dec_orq(CPUCRISState *env, DisasContext *dc) 1311 { 1312 uint32_t imm; 1313 TCGv c; 1314 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); 1315 imm = sign_extend(dc->op1, 5); 1316 LOG_DIS("orq %d, $r%d\n", imm, dc->op2); 1317 cris_cc_mask(dc, CC_MASK_NZ); 1318 1319 c = tcg_constant_tl(imm); 1320 cris_alu(dc, CC_OP_OR, 1321 cpu_R[dc->op2], cpu_R[dc->op2], c, 4); 1322 return 2; 1323 } 1324 static int dec_btstq(CPUCRISState *env, DisasContext *dc) 1325 { 1326 TCGv c; 1327 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); 1328 LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2); 1329 1330 cris_cc_mask(dc, CC_MASK_NZ); 1331 c = tcg_constant_tl(dc->op1); 1332 cris_evaluate_flags(dc); 1333 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], 1334 c, cpu_PR[PR_CCS]); 1335 cris_alu(dc, CC_OP_MOVE, 1336 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); 1337 cris_update_cc_op(dc, CC_OP_FLAGS, 4); 1338 dc->flags_uptodate = 1; 1339 return 2; 1340 } 1341 static int dec_asrq(CPUCRISState *env, DisasContext *dc) 1342 { 1343 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); 1344 LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2); 1345 cris_cc_mask(dc, CC_MASK_NZ); 1346 1347 tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); 1348 cris_alu(dc, CC_OP_MOVE, 1349 cpu_R[dc->op2], 1350 cpu_R[dc->op2], cpu_R[dc->op2], 4); 1351 return 2; 1352 } 1353 static int dec_lslq(CPUCRISState *env, DisasContext *dc) 1354 { 1355 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); 1356 LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2); 1357 1358 cris_cc_mask(dc, CC_MASK_NZ); 1359 1360 tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); 1361 1362 cris_alu(dc, CC_OP_MOVE, 1363 cpu_R[dc->op2], 1364 cpu_R[dc->op2], cpu_R[dc->op2], 4); 1365 return 2; 1366 } 1367 static int dec_lsrq(CPUCRISState *env, DisasContext *dc) 1368 { 1369 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); 1370 LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2); 1371 1372 cris_cc_mask(dc, CC_MASK_NZ); 1373 1374 tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); 1375 cris_alu(dc, CC_OP_MOVE, 1376 cpu_R[dc->op2], 1377 cpu_R[dc->op2], cpu_R[dc->op2], 4); 1378 return 2; 1379 } 1380 1381 static int dec_move_r(CPUCRISState *env, DisasContext *dc) 1382 { 1383 int size = memsize_zz(dc); 1384 1385 LOG_DIS("move.%c $r%u, $r%u\n", 1386 memsize_char(size), dc->op1, dc->op2); 1387 1388 cris_cc_mask(dc, CC_MASK_NZ); 1389 if (size == 4) { 1390 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]); 1391 cris_cc_mask(dc, CC_MASK_NZ); 1392 cris_update_cc_op(dc, CC_OP_MOVE, 4); 1393 cris_update_cc_x(dc); 1394 cris_update_result(dc, cpu_R[dc->op2]); 1395 } else { 1396 TCGv t0; 1397 1398 t0 = tcg_temp_new(); 1399 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); 1400 cris_alu(dc, CC_OP_MOVE, 1401 cpu_R[dc->op2], 1402 cpu_R[dc->op2], t0, size); 1403 } 1404 return 2; 1405 } 1406 1407 static int dec_scc_r(CPUCRISState *env, DisasContext *dc) 1408 { 1409 int cond = dc->op2; 1410 1411 LOG_DIS("s%s $r%u\n", 1412 cc_name(cond), dc->op1); 1413 1414 gen_tst_cc(dc, cpu_R[dc->op1], cond); 1415 tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->op1], cpu_R[dc->op1], 0); 1416 1417 cris_cc_mask(dc, 0); 1418 return 2; 1419 } 1420 1421 static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t) 1422 { 1423 if (size == 4) { 1424 t[0] = cpu_R[dc->op2]; 1425 t[1] = cpu_R[dc->op1]; 1426 } else { 1427 t[0] = tcg_temp_new(); 1428 t[1] = tcg_temp_new(); 1429 } 1430 } 1431 1432 static int dec_and_r(CPUCRISState *env, DisasContext *dc) 1433 { 1434 TCGv t[2]; 1435 int size = memsize_zz(dc); 1436 1437 LOG_DIS("and.%c $r%u, $r%u\n", 1438 memsize_char(size), dc->op1, dc->op2); 1439 1440 cris_cc_mask(dc, CC_MASK_NZ); 1441 1442 cris_alu_alloc_temps(dc, size, t); 1443 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1444 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size); 1445 return 2; 1446 } 1447 1448 static int dec_lz_r(CPUCRISState *env, DisasContext *dc) 1449 { 1450 TCGv t0; 1451 LOG_DIS("lz $r%u, $r%u\n", 1452 dc->op1, dc->op2); 1453 cris_cc_mask(dc, CC_MASK_NZ); 1454 t0 = tcg_temp_new(); 1455 dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0); 1456 cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1457 return 2; 1458 } 1459 1460 static int dec_lsl_r(CPUCRISState *env, DisasContext *dc) 1461 { 1462 TCGv t[2]; 1463 int size = memsize_zz(dc); 1464 1465 LOG_DIS("lsl.%c $r%u, $r%u\n", 1466 memsize_char(size), dc->op1, dc->op2); 1467 1468 cris_cc_mask(dc, CC_MASK_NZ); 1469 cris_alu_alloc_temps(dc, size, t); 1470 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1471 tcg_gen_andi_tl(t[1], t[1], 63); 1472 cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size); 1473 return 2; 1474 } 1475 1476 static int dec_lsr_r(CPUCRISState *env, DisasContext *dc) 1477 { 1478 TCGv t[2]; 1479 int size = memsize_zz(dc); 1480 1481 LOG_DIS("lsr.%c $r%u, $r%u\n", 1482 memsize_char(size), dc->op1, dc->op2); 1483 1484 cris_cc_mask(dc, CC_MASK_NZ); 1485 cris_alu_alloc_temps(dc, size, t); 1486 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1487 tcg_gen_andi_tl(t[1], t[1], 63); 1488 cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size); 1489 return 2; 1490 } 1491 1492 static int dec_asr_r(CPUCRISState *env, DisasContext *dc) 1493 { 1494 TCGv t[2]; 1495 int size = memsize_zz(dc); 1496 1497 LOG_DIS("asr.%c $r%u, $r%u\n", 1498 memsize_char(size), dc->op1, dc->op2); 1499 1500 cris_cc_mask(dc, CC_MASK_NZ); 1501 cris_alu_alloc_temps(dc, size, t); 1502 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); 1503 tcg_gen_andi_tl(t[1], t[1], 63); 1504 cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size); 1505 return 2; 1506 } 1507 1508 static int dec_muls_r(CPUCRISState *env, DisasContext *dc) 1509 { 1510 TCGv t[2]; 1511 int size = memsize_zz(dc); 1512 1513 LOG_DIS("muls.%c $r%u, $r%u\n", 1514 memsize_char(size), dc->op1, dc->op2); 1515 cris_cc_mask(dc, CC_MASK_NZV); 1516 cris_alu_alloc_temps(dc, size, t); 1517 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); 1518 1519 cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4); 1520 return 2; 1521 } 1522 1523 static int dec_mulu_r(CPUCRISState *env, DisasContext *dc) 1524 { 1525 TCGv t[2]; 1526 int size = memsize_zz(dc); 1527 1528 LOG_DIS("mulu.%c $r%u, $r%u\n", 1529 memsize_char(size), dc->op1, dc->op2); 1530 cris_cc_mask(dc, CC_MASK_NZV); 1531 cris_alu_alloc_temps(dc, size, t); 1532 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1533 1534 cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4); 1535 return 2; 1536 } 1537 1538 1539 static int dec_dstep_r(CPUCRISState *env, DisasContext *dc) 1540 { 1541 LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2); 1542 cris_cc_mask(dc, CC_MASK_NZ); 1543 cris_alu(dc, CC_OP_DSTEP, 1544 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); 1545 return 2; 1546 } 1547 1548 static int dec_xor_r(CPUCRISState *env, DisasContext *dc) 1549 { 1550 TCGv t[2]; 1551 int size = memsize_zz(dc); 1552 LOG_DIS("xor.%c $r%u, $r%u\n", 1553 memsize_char(size), dc->op1, dc->op2); 1554 BUG_ON(size != 4); /* xor is dword. */ 1555 cris_cc_mask(dc, CC_MASK_NZ); 1556 cris_alu_alloc_temps(dc, size, t); 1557 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1558 1559 cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4); 1560 return 2; 1561 } 1562 1563 static int dec_bound_r(CPUCRISState *env, DisasContext *dc) 1564 { 1565 TCGv l0; 1566 int size = memsize_zz(dc); 1567 LOG_DIS("bound.%c $r%u, $r%u\n", 1568 memsize_char(size), dc->op1, dc->op2); 1569 cris_cc_mask(dc, CC_MASK_NZ); 1570 l0 = tcg_temp_new(); 1571 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0); 1572 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4); 1573 return 2; 1574 } 1575 1576 static int dec_cmp_r(CPUCRISState *env, DisasContext *dc) 1577 { 1578 TCGv t[2]; 1579 int size = memsize_zz(dc); 1580 LOG_DIS("cmp.%c $r%u, $r%u\n", 1581 memsize_char(size), dc->op1, dc->op2); 1582 cris_cc_mask(dc, CC_MASK_NZVC); 1583 cris_alu_alloc_temps(dc, size, t); 1584 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1585 1586 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size); 1587 return 2; 1588 } 1589 1590 static int dec_abs_r(CPUCRISState *env, DisasContext *dc) 1591 { 1592 LOG_DIS("abs $r%u, $r%u\n", 1593 dc->op1, dc->op2); 1594 cris_cc_mask(dc, CC_MASK_NZ); 1595 1596 tcg_gen_abs_tl(cpu_R[dc->op2], cpu_R[dc->op1]); 1597 cris_alu(dc, CC_OP_MOVE, 1598 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); 1599 return 2; 1600 } 1601 1602 static int dec_add_r(CPUCRISState *env, DisasContext *dc) 1603 { 1604 TCGv t[2]; 1605 int size = memsize_zz(dc); 1606 LOG_DIS("add.%c $r%u, $r%u\n", 1607 memsize_char(size), dc->op1, dc->op2); 1608 cris_cc_mask(dc, CC_MASK_NZVC); 1609 cris_alu_alloc_temps(dc, size, t); 1610 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1611 1612 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size); 1613 return 2; 1614 } 1615 1616 static int dec_addc_r(CPUCRISState *env, DisasContext *dc) 1617 { 1618 LOG_DIS("addc $r%u, $r%u\n", 1619 dc->op1, dc->op2); 1620 cris_evaluate_flags(dc); 1621 1622 /* Set for this insn. */ 1623 dc->flags_x = X_FLAG; 1624 1625 cris_cc_mask(dc, CC_MASK_NZVC); 1626 cris_alu(dc, CC_OP_ADDC, 1627 cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); 1628 return 2; 1629 } 1630 1631 static int dec_mcp_r(CPUCRISState *env, DisasContext *dc) 1632 { 1633 LOG_DIS("mcp $p%u, $r%u\n", 1634 dc->op2, dc->op1); 1635 cris_evaluate_flags(dc); 1636 cris_cc_mask(dc, CC_MASK_RNZV); 1637 cris_alu(dc, CC_OP_MCP, 1638 cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4); 1639 return 2; 1640 } 1641 1642 #if DISAS_CRIS 1643 static char * swapmode_name(int mode, char *modename) { 1644 int i = 0; 1645 if (mode & 8) { 1646 modename[i++] = 'n'; 1647 } 1648 if (mode & 4) { 1649 modename[i++] = 'w'; 1650 } 1651 if (mode & 2) { 1652 modename[i++] = 'b'; 1653 } 1654 if (mode & 1) { 1655 modename[i++] = 'r'; 1656 } 1657 modename[i++] = 0; 1658 return modename; 1659 } 1660 #endif 1661 1662 static int dec_swap_r(CPUCRISState *env, DisasContext *dc) 1663 { 1664 TCGv t0; 1665 #if DISAS_CRIS 1666 char modename[4]; 1667 #endif 1668 LOG_DIS("swap%s $r%u\n", 1669 swapmode_name(dc->op2, modename), dc->op1); 1670 1671 cris_cc_mask(dc, CC_MASK_NZ); 1672 t0 = tcg_temp_new(); 1673 tcg_gen_mov_tl(t0, cpu_R[dc->op1]); 1674 if (dc->op2 & 8) { 1675 tcg_gen_not_tl(t0, t0); 1676 } 1677 if (dc->op2 & 4) { 1678 t_gen_swapw(t0, t0); 1679 } 1680 if (dc->op2 & 2) { 1681 t_gen_swapb(t0, t0); 1682 } 1683 if (dc->op2 & 1) { 1684 t_gen_swapr(t0, t0); 1685 } 1686 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4); 1687 return 2; 1688 } 1689 1690 static int dec_or_r(CPUCRISState *env, DisasContext *dc) 1691 { 1692 TCGv t[2]; 1693 int size = memsize_zz(dc); 1694 LOG_DIS("or.%c $r%u, $r%u\n", 1695 memsize_char(size), dc->op1, dc->op2); 1696 cris_cc_mask(dc, CC_MASK_NZ); 1697 cris_alu_alloc_temps(dc, size, t); 1698 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1699 cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size); 1700 return 2; 1701 } 1702 1703 static int dec_addi_r(CPUCRISState *env, DisasContext *dc) 1704 { 1705 TCGv t0; 1706 LOG_DIS("addi.%c $r%u, $r%u\n", 1707 memsize_char(memsize_zz(dc)), dc->op2, dc->op1); 1708 cris_cc_mask(dc, 0); 1709 t0 = tcg_temp_new(); 1710 tcg_gen_shli_tl(t0, cpu_R[dc->op2], dc->zzsize); 1711 tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0); 1712 return 2; 1713 } 1714 1715 static int dec_addi_acr(CPUCRISState *env, DisasContext *dc) 1716 { 1717 TCGv t0; 1718 LOG_DIS("addi.%c $r%u, $r%u, $acr\n", 1719 memsize_char(memsize_zz(dc)), dc->op2, dc->op1); 1720 cris_cc_mask(dc, 0); 1721 t0 = tcg_temp_new(); 1722 tcg_gen_shli_tl(t0, cpu_R[dc->op2], dc->zzsize); 1723 tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0); 1724 return 2; 1725 } 1726 1727 static int dec_neg_r(CPUCRISState *env, DisasContext *dc) 1728 { 1729 TCGv t[2]; 1730 int size = memsize_zz(dc); 1731 LOG_DIS("neg.%c $r%u, $r%u\n", 1732 memsize_char(size), dc->op1, dc->op2); 1733 cris_cc_mask(dc, CC_MASK_NZVC); 1734 cris_alu_alloc_temps(dc, size, t); 1735 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1736 1737 cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size); 1738 return 2; 1739 } 1740 1741 static int dec_btst_r(CPUCRISState *env, DisasContext *dc) 1742 { 1743 LOG_DIS("btst $r%u, $r%u\n", 1744 dc->op1, dc->op2); 1745 cris_cc_mask(dc, CC_MASK_NZ); 1746 cris_evaluate_flags(dc); 1747 gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], 1748 cpu_R[dc->op1], cpu_PR[PR_CCS]); 1749 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], 1750 cpu_R[dc->op2], cpu_R[dc->op2], 4); 1751 cris_update_cc_op(dc, CC_OP_FLAGS, 4); 1752 dc->flags_uptodate = 1; 1753 return 2; 1754 } 1755 1756 static int dec_sub_r(CPUCRISState *env, DisasContext *dc) 1757 { 1758 TCGv t[2]; 1759 int size = memsize_zz(dc); 1760 LOG_DIS("sub.%c $r%u, $r%u\n", 1761 memsize_char(size), dc->op1, dc->op2); 1762 cris_cc_mask(dc, CC_MASK_NZVC); 1763 cris_alu_alloc_temps(dc, size, t); 1764 dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); 1765 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size); 1766 return 2; 1767 } 1768 1769 /* Zero extension. From size to dword. */ 1770 static int dec_movu_r(CPUCRISState *env, DisasContext *dc) 1771 { 1772 TCGv t0; 1773 int size = memsize_z(dc); 1774 LOG_DIS("movu.%c $r%u, $r%u\n", 1775 memsize_char(size), 1776 dc->op1, dc->op2); 1777 1778 cris_cc_mask(dc, CC_MASK_NZ); 1779 t0 = tcg_temp_new(); 1780 dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); 1781 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1782 return 2; 1783 } 1784 1785 /* Sign extension. From size to dword. */ 1786 static int dec_movs_r(CPUCRISState *env, DisasContext *dc) 1787 { 1788 TCGv t0; 1789 int size = memsize_z(dc); 1790 LOG_DIS("movs.%c $r%u, $r%u\n", 1791 memsize_char(size), 1792 dc->op1, dc->op2); 1793 1794 cris_cc_mask(dc, CC_MASK_NZ); 1795 t0 = tcg_temp_new(); 1796 /* Size can only be qi or hi. */ 1797 t_gen_sext(t0, cpu_R[dc->op1], size); 1798 cris_alu(dc, CC_OP_MOVE, 1799 cpu_R[dc->op2], cpu_R[dc->op1], t0, 4); 1800 return 2; 1801 } 1802 1803 /* zero extension. From size to dword. */ 1804 static int dec_addu_r(CPUCRISState *env, DisasContext *dc) 1805 { 1806 TCGv t0; 1807 int size = memsize_z(dc); 1808 LOG_DIS("addu.%c $r%u, $r%u\n", 1809 memsize_char(size), 1810 dc->op1, dc->op2); 1811 1812 cris_cc_mask(dc, CC_MASK_NZVC); 1813 t0 = tcg_temp_new(); 1814 /* Size can only be qi or hi. */ 1815 t_gen_zext(t0, cpu_R[dc->op1], size); 1816 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1817 return 2; 1818 } 1819 1820 /* Sign extension. From size to dword. */ 1821 static int dec_adds_r(CPUCRISState *env, DisasContext *dc) 1822 { 1823 TCGv t0; 1824 int size = memsize_z(dc); 1825 LOG_DIS("adds.%c $r%u, $r%u\n", 1826 memsize_char(size), 1827 dc->op1, dc->op2); 1828 1829 cris_cc_mask(dc, CC_MASK_NZVC); 1830 t0 = tcg_temp_new(); 1831 /* Size can only be qi or hi. */ 1832 t_gen_sext(t0, cpu_R[dc->op1], size); 1833 cris_alu(dc, CC_OP_ADD, 1834 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1835 return 2; 1836 } 1837 1838 /* Zero extension. From size to dword. */ 1839 static int dec_subu_r(CPUCRISState *env, DisasContext *dc) 1840 { 1841 TCGv t0; 1842 int size = memsize_z(dc); 1843 LOG_DIS("subu.%c $r%u, $r%u\n", 1844 memsize_char(size), 1845 dc->op1, dc->op2); 1846 1847 cris_cc_mask(dc, CC_MASK_NZVC); 1848 t0 = tcg_temp_new(); 1849 /* Size can only be qi or hi. */ 1850 t_gen_zext(t0, cpu_R[dc->op1], size); 1851 cris_alu(dc, CC_OP_SUB, 1852 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1853 return 2; 1854 } 1855 1856 /* Sign extension. From size to dword. */ 1857 static int dec_subs_r(CPUCRISState *env, DisasContext *dc) 1858 { 1859 TCGv t0; 1860 int size = memsize_z(dc); 1861 LOG_DIS("subs.%c $r%u, $r%u\n", 1862 memsize_char(size), 1863 dc->op1, dc->op2); 1864 1865 cris_cc_mask(dc, CC_MASK_NZVC); 1866 t0 = tcg_temp_new(); 1867 /* Size can only be qi or hi. */ 1868 t_gen_sext(t0, cpu_R[dc->op1], size); 1869 cris_alu(dc, CC_OP_SUB, 1870 cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); 1871 return 2; 1872 } 1873 1874 static int dec_setclrf(CPUCRISState *env, DisasContext *dc) 1875 { 1876 uint32_t flags; 1877 int set = (~dc->opcode >> 2) & 1; 1878 1879 1880 flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4) 1881 | EXTRACT_FIELD(dc->ir, 0, 3); 1882 if (set && flags == 0) { 1883 LOG_DIS("nop\n"); 1884 return 2; 1885 } else if (!set && (flags & 0x20)) { 1886 LOG_DIS("di\n"); 1887 } else { 1888 LOG_DIS("%sf %x\n", set ? "set" : "clr", flags); 1889 } 1890 1891 /* User space is not allowed to touch these. Silently ignore. */ 1892 if (dc->tb_flags & U_FLAG) { 1893 flags &= ~(S_FLAG | I_FLAG | U_FLAG); 1894 } 1895 1896 if (flags & X_FLAG) { 1897 if (set) { 1898 dc->flags_x = X_FLAG; 1899 } else { 1900 dc->flags_x = 0; 1901 } 1902 } 1903 1904 /* Break the TB if any of the SPI flag changes. */ 1905 if (flags & (P_FLAG | S_FLAG)) { 1906 tcg_gen_movi_tl(env_pc, dc->pc + 2); 1907 dc->base.is_jmp = DISAS_UPDATE; 1908 dc->cpustate_changed = 1; 1909 } 1910 1911 /* For the I flag, only act on posedge. */ 1912 if ((flags & I_FLAG)) { 1913 tcg_gen_movi_tl(env_pc, dc->pc + 2); 1914 dc->base.is_jmp = DISAS_UPDATE; 1915 dc->cpustate_changed = 1; 1916 } 1917 1918 1919 /* Simply decode the flags. */ 1920 cris_evaluate_flags(dc); 1921 cris_update_cc_op(dc, CC_OP_FLAGS, 4); 1922 cris_update_cc_x(dc); 1923 tcg_gen_movi_tl(cc_op, dc->cc_op); 1924 1925 if (set) { 1926 if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) { 1927 /* Enter user mode. */ 1928 t_gen_mov_env_TN(ksp, cpu_R[R_SP]); 1929 tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]); 1930 dc->cpustate_changed = 1; 1931 } 1932 tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); 1933 } else { 1934 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); 1935 } 1936 1937 dc->flags_uptodate = 1; 1938 dc->clear_x = 0; 1939 return 2; 1940 } 1941 1942 static int dec_move_rs(CPUCRISState *env, DisasContext *dc) 1943 { 1944 TCGv c2, c1; 1945 LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2); 1946 c1 = tcg_constant_tl(dc->op1); 1947 c2 = tcg_constant_tl(dc->op2); 1948 cris_cc_mask(dc, 0); 1949 gen_helper_movl_sreg_reg(cpu_env, c2, c1); 1950 return 2; 1951 } 1952 static int dec_move_sr(CPUCRISState *env, DisasContext *dc) 1953 { 1954 TCGv c2, c1; 1955 LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1); 1956 c1 = tcg_constant_tl(dc->op1); 1957 c2 = tcg_constant_tl(dc->op2); 1958 cris_cc_mask(dc, 0); 1959 gen_helper_movl_reg_sreg(cpu_env, c1, c2); 1960 return 2; 1961 } 1962 1963 static int dec_move_rp(CPUCRISState *env, DisasContext *dc) 1964 { 1965 TCGv t[2]; 1966 LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2); 1967 cris_cc_mask(dc, 0); 1968 1969 t[0] = tcg_temp_new(); 1970 if (dc->op2 == PR_CCS) { 1971 cris_evaluate_flags(dc); 1972 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); 1973 if (dc->tb_flags & U_FLAG) { 1974 t[1] = tcg_temp_new(); 1975 /* User space is not allowed to touch all flags. */ 1976 tcg_gen_andi_tl(t[0], t[0], 0x39f); 1977 tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f); 1978 tcg_gen_or_tl(t[0], t[1], t[0]); 1979 } 1980 } else { 1981 tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); 1982 } 1983 1984 t_gen_mov_preg_TN(dc, dc->op2, t[0]); 1985 if (dc->op2 == PR_CCS) { 1986 cris_update_cc_op(dc, CC_OP_FLAGS, 4); 1987 dc->flags_uptodate = 1; 1988 } 1989 return 2; 1990 } 1991 static int dec_move_pr(CPUCRISState *env, DisasContext *dc) 1992 { 1993 TCGv t0; 1994 LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1); 1995 cris_cc_mask(dc, 0); 1996 1997 if (dc->op2 == PR_CCS) { 1998 cris_evaluate_flags(dc); 1999 } 2000 2001 if (dc->op2 == PR_DZ) { 2002 tcg_gen_movi_tl(cpu_R[dc->op1], 0); 2003 } else { 2004 t0 = tcg_temp_new(); 2005 t_gen_mov_TN_preg(t0, dc->op2); 2006 cris_alu(dc, CC_OP_MOVE, 2007 cpu_R[dc->op1], cpu_R[dc->op1], t0, 2008 preg_sizes[dc->op2]); 2009 } 2010 return 2; 2011 } 2012 2013 static int dec_move_mr(CPUCRISState *env, DisasContext *dc) 2014 { 2015 int memsize = memsize_zz(dc); 2016 int insn_len; 2017 LOG_DIS("move.%c [$r%u%s, $r%u\n", 2018 memsize_char(memsize), 2019 dc->op1, dc->postinc ? "+]" : "]", 2020 dc->op2); 2021 2022 if (memsize == 4) { 2023 insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]); 2024 cris_cc_mask(dc, CC_MASK_NZ); 2025 cris_update_cc_op(dc, CC_OP_MOVE, 4); 2026 cris_update_cc_x(dc); 2027 cris_update_result(dc, cpu_R[dc->op2]); 2028 } else { 2029 TCGv t0; 2030 2031 t0 = tcg_temp_new(); 2032 insn_len = dec_prep_move_m(env, dc, 0, memsize, t0); 2033 cris_cc_mask(dc, CC_MASK_NZ); 2034 cris_alu(dc, CC_OP_MOVE, 2035 cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize); 2036 } 2037 do_postinc(dc, memsize); 2038 return insn_len; 2039 } 2040 2041 static inline void cris_alu_m_alloc_temps(TCGv *t) 2042 { 2043 t[0] = tcg_temp_new(); 2044 t[1] = tcg_temp_new(); 2045 } 2046 2047 static int dec_movs_m(CPUCRISState *env, DisasContext *dc) 2048 { 2049 TCGv t[2]; 2050 int memsize = memsize_z(dc); 2051 int insn_len; 2052 LOG_DIS("movs.%c [$r%u%s, $r%u\n", 2053 memsize_char(memsize), 2054 dc->op1, dc->postinc ? "+]" : "]", 2055 dc->op2); 2056 2057 cris_alu_m_alloc_temps(t); 2058 /* sign extend. */ 2059 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); 2060 cris_cc_mask(dc, CC_MASK_NZ); 2061 cris_alu(dc, CC_OP_MOVE, 2062 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2063 do_postinc(dc, memsize); 2064 return insn_len; 2065 } 2066 2067 static int dec_addu_m(CPUCRISState *env, DisasContext *dc) 2068 { 2069 TCGv t[2]; 2070 int memsize = memsize_z(dc); 2071 int insn_len; 2072 LOG_DIS("addu.%c [$r%u%s, $r%u\n", 2073 memsize_char(memsize), 2074 dc->op1, dc->postinc ? "+]" : "]", 2075 dc->op2); 2076 2077 cris_alu_m_alloc_temps(t); 2078 /* sign extend. */ 2079 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2080 cris_cc_mask(dc, CC_MASK_NZVC); 2081 cris_alu(dc, CC_OP_ADD, 2082 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2083 do_postinc(dc, memsize); 2084 return insn_len; 2085 } 2086 2087 static int dec_adds_m(CPUCRISState *env, DisasContext *dc) 2088 { 2089 TCGv t[2]; 2090 int memsize = memsize_z(dc); 2091 int insn_len; 2092 LOG_DIS("adds.%c [$r%u%s, $r%u\n", 2093 memsize_char(memsize), 2094 dc->op1, dc->postinc ? "+]" : "]", 2095 dc->op2); 2096 2097 cris_alu_m_alloc_temps(t); 2098 /* sign extend. */ 2099 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); 2100 cris_cc_mask(dc, CC_MASK_NZVC); 2101 cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2102 do_postinc(dc, memsize); 2103 return insn_len; 2104 } 2105 2106 static int dec_subu_m(CPUCRISState *env, DisasContext *dc) 2107 { 2108 TCGv t[2]; 2109 int memsize = memsize_z(dc); 2110 int insn_len; 2111 LOG_DIS("subu.%c [$r%u%s, $r%u\n", 2112 memsize_char(memsize), 2113 dc->op1, dc->postinc ? "+]" : "]", 2114 dc->op2); 2115 2116 cris_alu_m_alloc_temps(t); 2117 /* sign extend. */ 2118 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2119 cris_cc_mask(dc, CC_MASK_NZVC); 2120 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2121 do_postinc(dc, memsize); 2122 return insn_len; 2123 } 2124 2125 static int dec_subs_m(CPUCRISState *env, DisasContext *dc) 2126 { 2127 TCGv t[2]; 2128 int memsize = memsize_z(dc); 2129 int insn_len; 2130 LOG_DIS("subs.%c [$r%u%s, $r%u\n", 2131 memsize_char(memsize), 2132 dc->op1, dc->postinc ? "+]" : "]", 2133 dc->op2); 2134 2135 cris_alu_m_alloc_temps(t); 2136 /* sign extend. */ 2137 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); 2138 cris_cc_mask(dc, CC_MASK_NZVC); 2139 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2140 do_postinc(dc, memsize); 2141 return insn_len; 2142 } 2143 2144 static int dec_movu_m(CPUCRISState *env, DisasContext *dc) 2145 { 2146 TCGv t[2]; 2147 int memsize = memsize_z(dc); 2148 int insn_len; 2149 2150 LOG_DIS("movu.%c [$r%u%s, $r%u\n", 2151 memsize_char(memsize), 2152 dc->op1, dc->postinc ? "+]" : "]", 2153 dc->op2); 2154 2155 cris_alu_m_alloc_temps(t); 2156 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2157 cris_cc_mask(dc, CC_MASK_NZ); 2158 cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2159 do_postinc(dc, memsize); 2160 return insn_len; 2161 } 2162 2163 static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc) 2164 { 2165 TCGv t[2]; 2166 int memsize = memsize_z(dc); 2167 int insn_len; 2168 LOG_DIS("cmpu.%c [$r%u%s, $r%u\n", 2169 memsize_char(memsize), 2170 dc->op1, dc->postinc ? "+]" : "]", 2171 dc->op2); 2172 2173 cris_alu_m_alloc_temps(t); 2174 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2175 cris_cc_mask(dc, CC_MASK_NZVC); 2176 cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); 2177 do_postinc(dc, memsize); 2178 return insn_len; 2179 } 2180 2181 static int dec_cmps_m(CPUCRISState *env, DisasContext *dc) 2182 { 2183 TCGv t[2]; 2184 int memsize = memsize_z(dc); 2185 int insn_len; 2186 LOG_DIS("cmps.%c [$r%u%s, $r%u\n", 2187 memsize_char(memsize), 2188 dc->op1, dc->postinc ? "+]" : "]", 2189 dc->op2); 2190 2191 cris_alu_m_alloc_temps(t); 2192 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); 2193 cris_cc_mask(dc, CC_MASK_NZVC); 2194 cris_alu(dc, CC_OP_CMP, 2195 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 2196 memsize_zz(dc)); 2197 do_postinc(dc, memsize); 2198 return insn_len; 2199 } 2200 2201 static int dec_cmp_m(CPUCRISState *env, DisasContext *dc) 2202 { 2203 TCGv t[2]; 2204 int memsize = memsize_zz(dc); 2205 int insn_len; 2206 LOG_DIS("cmp.%c [$r%u%s, $r%u\n", 2207 memsize_char(memsize), 2208 dc->op1, dc->postinc ? "+]" : "]", 2209 dc->op2); 2210 2211 cris_alu_m_alloc_temps(t); 2212 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2213 cris_cc_mask(dc, CC_MASK_NZVC); 2214 cris_alu(dc, CC_OP_CMP, 2215 cpu_R[dc->op2], cpu_R[dc->op2], t[1], 2216 memsize_zz(dc)); 2217 do_postinc(dc, memsize); 2218 return insn_len; 2219 } 2220 2221 static int dec_test_m(CPUCRISState *env, DisasContext *dc) 2222 { 2223 TCGv t[2], c; 2224 int memsize = memsize_zz(dc); 2225 int insn_len; 2226 LOG_DIS("test.%c [$r%u%s] op2=%x\n", 2227 memsize_char(memsize), 2228 dc->op1, dc->postinc ? "+]" : "]", 2229 dc->op2); 2230 2231 cris_evaluate_flags(dc); 2232 2233 cris_alu_m_alloc_temps(t); 2234 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2235 cris_cc_mask(dc, CC_MASK_NZ); 2236 tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3); 2237 2238 c = tcg_constant_tl(0); 2239 cris_alu(dc, CC_OP_CMP, 2240 cpu_R[dc->op2], t[1], c, memsize_zz(dc)); 2241 do_postinc(dc, memsize); 2242 return insn_len; 2243 } 2244 2245 static int dec_and_m(CPUCRISState *env, DisasContext *dc) 2246 { 2247 TCGv t[2]; 2248 int memsize = memsize_zz(dc); 2249 int insn_len; 2250 LOG_DIS("and.%c [$r%u%s, $r%u\n", 2251 memsize_char(memsize), 2252 dc->op1, dc->postinc ? "+]" : "]", 2253 dc->op2); 2254 2255 cris_alu_m_alloc_temps(t); 2256 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2257 cris_cc_mask(dc, CC_MASK_NZ); 2258 cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); 2259 do_postinc(dc, memsize); 2260 return insn_len; 2261 } 2262 2263 static int dec_add_m(CPUCRISState *env, DisasContext *dc) 2264 { 2265 TCGv t[2]; 2266 int memsize = memsize_zz(dc); 2267 int insn_len; 2268 LOG_DIS("add.%c [$r%u%s, $r%u\n", 2269 memsize_char(memsize), 2270 dc->op1, dc->postinc ? "+]" : "]", 2271 dc->op2); 2272 2273 cris_alu_m_alloc_temps(t); 2274 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2275 cris_cc_mask(dc, CC_MASK_NZVC); 2276 cris_alu(dc, CC_OP_ADD, 2277 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); 2278 do_postinc(dc, memsize); 2279 return insn_len; 2280 } 2281 2282 static int dec_addo_m(CPUCRISState *env, DisasContext *dc) 2283 { 2284 TCGv t[2]; 2285 int memsize = memsize_zz(dc); 2286 int insn_len; 2287 LOG_DIS("add.%c [$r%u%s, $r%u\n", 2288 memsize_char(memsize), 2289 dc->op1, dc->postinc ? "+]" : "]", 2290 dc->op2); 2291 2292 cris_alu_m_alloc_temps(t); 2293 insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); 2294 cris_cc_mask(dc, 0); 2295 cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4); 2296 do_postinc(dc, memsize); 2297 return insn_len; 2298 } 2299 2300 static int dec_bound_m(CPUCRISState *env, DisasContext *dc) 2301 { 2302 TCGv l[2]; 2303 int memsize = memsize_zz(dc); 2304 int insn_len; 2305 LOG_DIS("bound.%c [$r%u%s, $r%u\n", 2306 memsize_char(memsize), 2307 dc->op1, dc->postinc ? "+]" : "]", 2308 dc->op2); 2309 2310 l[0] = tcg_temp_new(); 2311 l[1] = tcg_temp_new(); 2312 insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]); 2313 cris_cc_mask(dc, CC_MASK_NZ); 2314 cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4); 2315 do_postinc(dc, memsize); 2316 return insn_len; 2317 } 2318 2319 static int dec_addc_mr(CPUCRISState *env, DisasContext *dc) 2320 { 2321 TCGv t[2]; 2322 int insn_len = 2; 2323 LOG_DIS("addc [$r%u%s, $r%u\n", 2324 dc->op1, dc->postinc ? "+]" : "]", 2325 dc->op2); 2326 2327 cris_evaluate_flags(dc); 2328 2329 /* Set for this insn. */ 2330 dc->flags_x = X_FLAG; 2331 2332 cris_alu_m_alloc_temps(t); 2333 insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]); 2334 cris_cc_mask(dc, CC_MASK_NZVC); 2335 cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4); 2336 do_postinc(dc, 4); 2337 return insn_len; 2338 } 2339 2340 static int dec_sub_m(CPUCRISState *env, DisasContext *dc) 2341 { 2342 TCGv t[2]; 2343 int memsize = memsize_zz(dc); 2344 int insn_len; 2345 LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n", 2346 memsize_char(memsize), 2347 dc->op1, dc->postinc ? "+]" : "]", 2348 dc->op2, dc->ir, dc->zzsize); 2349 2350 cris_alu_m_alloc_temps(t); 2351 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2352 cris_cc_mask(dc, CC_MASK_NZVC); 2353 cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize); 2354 do_postinc(dc, memsize); 2355 return insn_len; 2356 } 2357 2358 static int dec_or_m(CPUCRISState *env, DisasContext *dc) 2359 { 2360 TCGv t[2]; 2361 int memsize = memsize_zz(dc); 2362 int insn_len; 2363 LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n", 2364 memsize_char(memsize), 2365 dc->op1, dc->postinc ? "+]" : "]", 2366 dc->op2, dc->pc); 2367 2368 cris_alu_m_alloc_temps(t); 2369 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2370 cris_cc_mask(dc, CC_MASK_NZ); 2371 cris_alu(dc, CC_OP_OR, 2372 cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); 2373 do_postinc(dc, memsize); 2374 return insn_len; 2375 } 2376 2377 static int dec_move_mp(CPUCRISState *env, DisasContext *dc) 2378 { 2379 TCGv t[2]; 2380 int memsize = memsize_zz(dc); 2381 int insn_len = 2; 2382 2383 LOG_DIS("move.%c [$r%u%s, $p%u\n", 2384 memsize_char(memsize), 2385 dc->op1, 2386 dc->postinc ? "+]" : "]", 2387 dc->op2); 2388 2389 cris_alu_m_alloc_temps(t); 2390 insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); 2391 cris_cc_mask(dc, 0); 2392 if (dc->op2 == PR_CCS) { 2393 cris_evaluate_flags(dc); 2394 if (dc->tb_flags & U_FLAG) { 2395 /* User space is not allowed to touch all flags. */ 2396 tcg_gen_andi_tl(t[1], t[1], 0x39f); 2397 tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f); 2398 tcg_gen_or_tl(t[1], t[0], t[1]); 2399 } 2400 } 2401 2402 t_gen_mov_preg_TN(dc, dc->op2, t[1]); 2403 2404 do_postinc(dc, memsize); 2405 return insn_len; 2406 } 2407 2408 static int dec_move_pm(CPUCRISState *env, DisasContext *dc) 2409 { 2410 TCGv t0; 2411 int memsize; 2412 2413 memsize = preg_sizes[dc->op2]; 2414 2415 LOG_DIS("move.%c $p%u, [$r%u%s\n", 2416 memsize_char(memsize), 2417 dc->op2, dc->op1, dc->postinc ? "+]" : "]"); 2418 2419 /* prepare store. Address in T0, value in T1. */ 2420 if (dc->op2 == PR_CCS) { 2421 cris_evaluate_flags(dc); 2422 } 2423 t0 = tcg_temp_new(); 2424 t_gen_mov_TN_preg(t0, dc->op2); 2425 cris_flush_cc_state(dc); 2426 gen_store(dc, cpu_R[dc->op1], t0, memsize); 2427 2428 cris_cc_mask(dc, 0); 2429 if (dc->postinc) { 2430 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); 2431 } 2432 return 2; 2433 } 2434 2435 static int dec_movem_mr(CPUCRISState *env, DisasContext *dc) 2436 { 2437 TCGv_i64 tmp[16]; 2438 TCGv tmp32; 2439 TCGv addr; 2440 int i; 2441 int nr = dc->op2 + 1; 2442 2443 LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1, 2444 dc->postinc ? "+]" : "]", dc->op2); 2445 2446 addr = tcg_temp_new(); 2447 /* There are probably better ways of doing this. */ 2448 cris_flush_cc_state(dc); 2449 for (i = 0; i < (nr >> 1); i++) { 2450 tmp[i] = tcg_temp_new_i64(); 2451 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); 2452 gen_load64(dc, tmp[i], addr); 2453 } 2454 if (nr & 1) { 2455 tmp32 = tcg_temp_new_i32(); 2456 tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); 2457 gen_load(dc, tmp32, addr, 4, 0); 2458 } else { 2459 tmp32 = NULL; 2460 } 2461 2462 for (i = 0; i < (nr >> 1); i++) { 2463 tcg_gen_extrl_i64_i32(cpu_R[i * 2], tmp[i]); 2464 tcg_gen_shri_i64(tmp[i], tmp[i], 32); 2465 tcg_gen_extrl_i64_i32(cpu_R[i * 2 + 1], tmp[i]); 2466 } 2467 if (nr & 1) { 2468 tcg_gen_mov_tl(cpu_R[dc->op2], tmp32); 2469 } 2470 2471 /* writeback the updated pointer value. */ 2472 if (dc->postinc) { 2473 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4); 2474 } 2475 2476 /* gen_load might want to evaluate the previous insns flags. */ 2477 cris_cc_mask(dc, 0); 2478 return 2; 2479 } 2480 2481 static int dec_movem_rm(CPUCRISState *env, DisasContext *dc) 2482 { 2483 TCGv tmp; 2484 TCGv addr; 2485 int i; 2486 2487 LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1, 2488 dc->postinc ? "+]" : "]"); 2489 2490 cris_flush_cc_state(dc); 2491 2492 tmp = tcg_temp_new(); 2493 addr = tcg_temp_new(); 2494 tcg_gen_movi_tl(tmp, 4); 2495 tcg_gen_mov_tl(addr, cpu_R[dc->op1]); 2496 for (i = 0; i <= dc->op2; i++) { 2497 /* Displace addr. */ 2498 /* Perform the store. */ 2499 gen_store(dc, addr, cpu_R[i], 4); 2500 tcg_gen_add_tl(addr, addr, tmp); 2501 } 2502 if (dc->postinc) { 2503 tcg_gen_mov_tl(cpu_R[dc->op1], addr); 2504 } 2505 cris_cc_mask(dc, 0); 2506 return 2; 2507 } 2508 2509 static int dec_move_rm(CPUCRISState *env, DisasContext *dc) 2510 { 2511 int memsize; 2512 2513 memsize = memsize_zz(dc); 2514 2515 LOG_DIS("move.%c $r%u, [$r%u]\n", 2516 memsize_char(memsize), dc->op2, dc->op1); 2517 2518 /* prepare store. */ 2519 cris_flush_cc_state(dc); 2520 gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize); 2521 2522 if (dc->postinc) { 2523 tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); 2524 } 2525 cris_cc_mask(dc, 0); 2526 return 2; 2527 } 2528 2529 static int dec_lapcq(CPUCRISState *env, DisasContext *dc) 2530 { 2531 LOG_DIS("lapcq %x, $r%u\n", 2532 dc->pc + dc->op1*2, dc->op2); 2533 cris_cc_mask(dc, 0); 2534 tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2); 2535 return 2; 2536 } 2537 2538 static int dec_lapc_im(CPUCRISState *env, DisasContext *dc) 2539 { 2540 unsigned int rd; 2541 int32_t imm; 2542 int32_t pc; 2543 2544 rd = dc->op2; 2545 2546 cris_cc_mask(dc, 0); 2547 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); 2548 LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2); 2549 2550 pc = dc->pc; 2551 pc += imm; 2552 tcg_gen_movi_tl(cpu_R[rd], pc); 2553 return 6; 2554 } 2555 2556 /* Jump to special reg. */ 2557 static int dec_jump_p(CPUCRISState *env, DisasContext *dc) 2558 { 2559 LOG_DIS("jump $p%u\n", dc->op2); 2560 2561 if (dc->op2 == PR_CCS) { 2562 cris_evaluate_flags(dc); 2563 } 2564 t_gen_mov_TN_preg(env_btarget, dc->op2); 2565 /* rete will often have low bit set to indicate delayslot. */ 2566 tcg_gen_andi_tl(env_btarget, env_btarget, ~1); 2567 cris_cc_mask(dc, 0); 2568 cris_prepare_jmp(dc, JMP_INDIRECT); 2569 return 2; 2570 } 2571 2572 /* Jump and save. */ 2573 static int dec_jas_r(CPUCRISState *env, DisasContext *dc) 2574 { 2575 TCGv c; 2576 LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2); 2577 cris_cc_mask(dc, 0); 2578 /* Store the return address in Pd. */ 2579 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); 2580 if (dc->op2 > 15) { 2581 abort(); 2582 } 2583 c = tcg_constant_tl(dc->pc + 4); 2584 t_gen_mov_preg_TN(dc, dc->op2, c); 2585 2586 cris_prepare_jmp(dc, JMP_INDIRECT); 2587 return 2; 2588 } 2589 2590 static int dec_jas_im(CPUCRISState *env, DisasContext *dc) 2591 { 2592 uint32_t imm; 2593 TCGv c; 2594 2595 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); 2596 2597 LOG_DIS("jas 0x%x\n", imm); 2598 cris_cc_mask(dc, 0); 2599 c = tcg_constant_tl(dc->pc + 8); 2600 /* Store the return address in Pd. */ 2601 t_gen_mov_preg_TN(dc, dc->op2, c); 2602 2603 dc->jmp_pc = imm; 2604 cris_prepare_jmp(dc, JMP_DIRECT); 2605 return 6; 2606 } 2607 2608 static int dec_jasc_im(CPUCRISState *env, DisasContext *dc) 2609 { 2610 uint32_t imm; 2611 TCGv c; 2612 2613 imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); 2614 2615 LOG_DIS("jasc 0x%x\n", imm); 2616 cris_cc_mask(dc, 0); 2617 c = tcg_constant_tl(dc->pc + 8 + 4); 2618 /* Store the return address in Pd. */ 2619 t_gen_mov_preg_TN(dc, dc->op2, c); 2620 2621 dc->jmp_pc = imm; 2622 cris_prepare_jmp(dc, JMP_DIRECT); 2623 return 6; 2624 } 2625 2626 static int dec_jasc_r(CPUCRISState *env, DisasContext *dc) 2627 { 2628 TCGv c; 2629 LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2); 2630 cris_cc_mask(dc, 0); 2631 /* Store the return address in Pd. */ 2632 tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); 2633 c = tcg_constant_tl(dc->pc + 4 + 4); 2634 t_gen_mov_preg_TN(dc, dc->op2, c); 2635 cris_prepare_jmp(dc, JMP_INDIRECT); 2636 return 2; 2637 } 2638 2639 static int dec_bcc_im(CPUCRISState *env, DisasContext *dc) 2640 { 2641 int32_t offset; 2642 uint32_t cond = dc->op2; 2643 2644 offset = cris_fetch(env, dc, dc->pc + 2, 2, 1); 2645 2646 LOG_DIS("b%s %d pc=%x dst=%x\n", 2647 cc_name(cond), offset, 2648 dc->pc, dc->pc + offset); 2649 2650 cris_cc_mask(dc, 0); 2651 /* op2 holds the condition-code. */ 2652 cris_prepare_cc_branch(dc, offset, cond); 2653 return 4; 2654 } 2655 2656 static int dec_bas_im(CPUCRISState *env, DisasContext *dc) 2657 { 2658 int32_t simm; 2659 TCGv c; 2660 2661 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); 2662 2663 LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2); 2664 cris_cc_mask(dc, 0); 2665 c = tcg_constant_tl(dc->pc + 8); 2666 /* Store the return address in Pd. */ 2667 t_gen_mov_preg_TN(dc, dc->op2, c); 2668 2669 dc->jmp_pc = dc->pc + simm; 2670 cris_prepare_jmp(dc, JMP_DIRECT); 2671 return 6; 2672 } 2673 2674 static int dec_basc_im(CPUCRISState *env, DisasContext *dc) 2675 { 2676 int32_t simm; 2677 TCGv c; 2678 simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); 2679 2680 LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2); 2681 cris_cc_mask(dc, 0); 2682 c = tcg_constant_tl(dc->pc + 12); 2683 /* Store the return address in Pd. */ 2684 t_gen_mov_preg_TN(dc, dc->op2, c); 2685 2686 dc->jmp_pc = dc->pc + simm; 2687 cris_prepare_jmp(dc, JMP_DIRECT); 2688 return 6; 2689 } 2690 2691 static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc) 2692 { 2693 cris_cc_mask(dc, 0); 2694 2695 if (dc->op2 == 15) { 2696 tcg_gen_st_i32(tcg_constant_i32(1), cpu_env, 2697 -offsetof(CRISCPU, env) + offsetof(CPUState, halted)); 2698 tcg_gen_movi_tl(env_pc, dc->pc + 2); 2699 t_gen_raise_exception(EXCP_HLT); 2700 dc->base.is_jmp = DISAS_NORETURN; 2701 return 2; 2702 } 2703 2704 switch (dc->op2 & 7) { 2705 case 2: 2706 /* rfe. */ 2707 LOG_DIS("rfe\n"); 2708 cris_evaluate_flags(dc); 2709 gen_helper_rfe(cpu_env); 2710 dc->base.is_jmp = DISAS_UPDATE; 2711 dc->cpustate_changed = true; 2712 break; 2713 case 5: 2714 /* rfn. */ 2715 LOG_DIS("rfn\n"); 2716 cris_evaluate_flags(dc); 2717 gen_helper_rfn(cpu_env); 2718 dc->base.is_jmp = DISAS_UPDATE; 2719 dc->cpustate_changed = true; 2720 break; 2721 case 6: 2722 LOG_DIS("break %d\n", dc->op1); 2723 cris_evaluate_flags(dc); 2724 /* break. */ 2725 tcg_gen_movi_tl(env_pc, dc->pc + 2); 2726 2727 /* Breaks start at 16 in the exception vector. */ 2728 t_gen_movi_env_TN(trap_vector, dc->op1 + 16); 2729 t_gen_raise_exception(EXCP_BREAK); 2730 dc->base.is_jmp = DISAS_NORETURN; 2731 break; 2732 default: 2733 printf("op2=%x\n", dc->op2); 2734 BUG(); 2735 break; 2736 2737 } 2738 return 2; 2739 } 2740 2741 static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc) 2742 { 2743 return 2; 2744 } 2745 2746 static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc) 2747 { 2748 return 2; 2749 } 2750 2751 static int dec_null(CPUCRISState *env, DisasContext *dc) 2752 { 2753 printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n", 2754 dc->pc, dc->opcode, dc->op1, dc->op2); 2755 fflush(NULL); 2756 BUG(); 2757 return 2; 2758 } 2759 2760 static const struct decoder_info { 2761 struct { 2762 uint32_t bits; 2763 uint32_t mask; 2764 }; 2765 int (*dec)(CPUCRISState *env, DisasContext *dc); 2766 } decinfo[] = { 2767 /* Order matters here. */ 2768 {DEC_MOVEQ, dec_moveq}, 2769 {DEC_BTSTQ, dec_btstq}, 2770 {DEC_CMPQ, dec_cmpq}, 2771 {DEC_ADDOQ, dec_addoq}, 2772 {DEC_ADDQ, dec_addq}, 2773 {DEC_SUBQ, dec_subq}, 2774 {DEC_ANDQ, dec_andq}, 2775 {DEC_ORQ, dec_orq}, 2776 {DEC_ASRQ, dec_asrq}, 2777 {DEC_LSLQ, dec_lslq}, 2778 {DEC_LSRQ, dec_lsrq}, 2779 {DEC_BCCQ, dec_bccq}, 2780 2781 {DEC_BCC_IM, dec_bcc_im}, 2782 {DEC_JAS_IM, dec_jas_im}, 2783 {DEC_JAS_R, dec_jas_r}, 2784 {DEC_JASC_IM, dec_jasc_im}, 2785 {DEC_JASC_R, dec_jasc_r}, 2786 {DEC_BAS_IM, dec_bas_im}, 2787 {DEC_BASC_IM, dec_basc_im}, 2788 {DEC_JUMP_P, dec_jump_p}, 2789 {DEC_LAPC_IM, dec_lapc_im}, 2790 {DEC_LAPCQ, dec_lapcq}, 2791 2792 {DEC_RFE_ETC, dec_rfe_etc}, 2793 {DEC_ADDC_MR, dec_addc_mr}, 2794 2795 {DEC_MOVE_MP, dec_move_mp}, 2796 {DEC_MOVE_PM, dec_move_pm}, 2797 {DEC_MOVEM_MR, dec_movem_mr}, 2798 {DEC_MOVEM_RM, dec_movem_rm}, 2799 {DEC_MOVE_PR, dec_move_pr}, 2800 {DEC_SCC_R, dec_scc_r}, 2801 {DEC_SETF, dec_setclrf}, 2802 {DEC_CLEARF, dec_setclrf}, 2803 2804 {DEC_MOVE_SR, dec_move_sr}, 2805 {DEC_MOVE_RP, dec_move_rp}, 2806 {DEC_SWAP_R, dec_swap_r}, 2807 {DEC_ABS_R, dec_abs_r}, 2808 {DEC_LZ_R, dec_lz_r}, 2809 {DEC_MOVE_RS, dec_move_rs}, 2810 {DEC_BTST_R, dec_btst_r}, 2811 {DEC_ADDC_R, dec_addc_r}, 2812 2813 {DEC_DSTEP_R, dec_dstep_r}, 2814 {DEC_XOR_R, dec_xor_r}, 2815 {DEC_MCP_R, dec_mcp_r}, 2816 {DEC_CMP_R, dec_cmp_r}, 2817 2818 {DEC_ADDI_R, dec_addi_r}, 2819 {DEC_ADDI_ACR, dec_addi_acr}, 2820 2821 {DEC_ADD_R, dec_add_r}, 2822 {DEC_SUB_R, dec_sub_r}, 2823 2824 {DEC_ADDU_R, dec_addu_r}, 2825 {DEC_ADDS_R, dec_adds_r}, 2826 {DEC_SUBU_R, dec_subu_r}, 2827 {DEC_SUBS_R, dec_subs_r}, 2828 {DEC_LSL_R, dec_lsl_r}, 2829 2830 {DEC_AND_R, dec_and_r}, 2831 {DEC_OR_R, dec_or_r}, 2832 {DEC_BOUND_R, dec_bound_r}, 2833 {DEC_ASR_R, dec_asr_r}, 2834 {DEC_LSR_R, dec_lsr_r}, 2835 2836 {DEC_MOVU_R, dec_movu_r}, 2837 {DEC_MOVS_R, dec_movs_r}, 2838 {DEC_NEG_R, dec_neg_r}, 2839 {DEC_MOVE_R, dec_move_r}, 2840 2841 {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m}, 2842 {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m}, 2843 2844 {DEC_MULS_R, dec_muls_r}, 2845 {DEC_MULU_R, dec_mulu_r}, 2846 2847 {DEC_ADDU_M, dec_addu_m}, 2848 {DEC_ADDS_M, dec_adds_m}, 2849 {DEC_SUBU_M, dec_subu_m}, 2850 {DEC_SUBS_M, dec_subs_m}, 2851 2852 {DEC_CMPU_M, dec_cmpu_m}, 2853 {DEC_CMPS_M, dec_cmps_m}, 2854 {DEC_MOVU_M, dec_movu_m}, 2855 {DEC_MOVS_M, dec_movs_m}, 2856 2857 {DEC_CMP_M, dec_cmp_m}, 2858 {DEC_ADDO_M, dec_addo_m}, 2859 {DEC_BOUND_M, dec_bound_m}, 2860 {DEC_ADD_M, dec_add_m}, 2861 {DEC_SUB_M, dec_sub_m}, 2862 {DEC_AND_M, dec_and_m}, 2863 {DEC_OR_M, dec_or_m}, 2864 {DEC_MOVE_RM, dec_move_rm}, 2865 {DEC_TEST_M, dec_test_m}, 2866 {DEC_MOVE_MR, dec_move_mr}, 2867 2868 {{0, 0}, dec_null} 2869 }; 2870 2871 static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc) 2872 { 2873 int insn_len = 2; 2874 int i; 2875 2876 /* Load a halfword onto the instruction register. */ 2877 dc->ir = cris_fetch(env, dc, dc->pc, 2, 0); 2878 2879 /* Now decode it. */ 2880 dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11); 2881 dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3); 2882 dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15); 2883 dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4); 2884 dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5); 2885 dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); 2886 2887 /* Large switch for all insns. */ 2888 for (i = 0; i < ARRAY_SIZE(decinfo); i++) { 2889 if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) { 2890 insn_len = decinfo[i].dec(env, dc); 2891 break; 2892 } 2893 } 2894 2895 #if !defined(CONFIG_USER_ONLY) 2896 /* Single-stepping ? */ 2897 if (dc->tb_flags & S_FLAG) { 2898 TCGLabel *l1 = gen_new_label(); 2899 tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1); 2900 /* We treat SPC as a break with an odd trap vector. */ 2901 cris_evaluate_flags(dc); 2902 t_gen_movi_env_TN(trap_vector, 3); 2903 tcg_gen_movi_tl(env_pc, dc->pc + insn_len); 2904 tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); 2905 t_gen_raise_exception(EXCP_BREAK); 2906 gen_set_label(l1); 2907 } 2908 #endif 2909 return insn_len; 2910 } 2911 2912 #include "translate_v10.c.inc" 2913 2914 /* 2915 * Delay slots on QEMU/CRIS. 2916 * 2917 * If an exception hits on a delayslot, the core will let ERP (the Exception 2918 * Return Pointer) point to the branch (the previous) insn and set the lsb to 2919 * to give SW a hint that the exception actually hit on the dslot. 2920 * 2921 * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by 2922 * the core and any jmp to an odd addresses will mask off that lsb. It is 2923 * simply there to let sw know there was an exception on a dslot. 2924 * 2925 * When the software returns from an exception, the branch will re-execute. 2926 * On QEMU care needs to be taken when a branch+delayslot sequence is broken 2927 * and the branch and delayslot don't share pages. 2928 * 2929 * The TB containing the branch insn will set up env->btarget and evaluate 2930 * env->btaken. When the translation loop exits we will note that the branch 2931 * sequence is broken and let env->dslot be the size of the branch insn (those 2932 * vary in length). 2933 * 2934 * The TB containing the delayslot will have the PC of its real insn (i.e no lsb 2935 * set). It will also expect to have env->dslot setup with the size of the 2936 * delay slot so that env->pc - env->dslot point to the branch insn. This TB 2937 * will execute the dslot and take the branch, either to btarget or just one 2938 * insn ahead. 2939 * 2940 * When exceptions occur, we check for env->dslot in do_interrupt to detect 2941 * broken branch sequences and setup $erp accordingly (i.e let it point to the 2942 * branch and set lsb). Then env->dslot gets cleared so that the exception 2943 * handler can enter. When returning from exceptions (jump $erp) the lsb gets 2944 * masked off and we will reexecute the branch insn. 2945 * 2946 */ 2947 2948 static void cris_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) 2949 { 2950 DisasContext *dc = container_of(dcbase, DisasContext, base); 2951 CPUCRISState *env = cs->env_ptr; 2952 uint32_t tb_flags = dc->base.tb->flags; 2953 uint32_t pc_start; 2954 2955 if (env->pregs[PR_VR] == 32) { 2956 dc->decoder = crisv32_decoder; 2957 dc->clear_locked_irq = 0; 2958 } else { 2959 dc->decoder = crisv10_decoder; 2960 dc->clear_locked_irq = 1; 2961 } 2962 2963 /* 2964 * Odd PC indicates that branch is rexecuting due to exception in the 2965 * delayslot, like in real hw. 2966 */ 2967 pc_start = dc->base.pc_first & ~1; 2968 dc->base.pc_first = pc_start; 2969 dc->base.pc_next = pc_start; 2970 2971 dc->cpu = env_archcpu(env); 2972 dc->ppc = pc_start; 2973 dc->pc = pc_start; 2974 dc->flags_uptodate = 1; 2975 dc->flags_x = tb_flags & X_FLAG; 2976 dc->cc_x_uptodate = 0; 2977 dc->cc_mask = 0; 2978 dc->update_cc = 0; 2979 dc->clear_prefix = 0; 2980 dc->cpustate_changed = 0; 2981 2982 cris_update_cc_op(dc, CC_OP_FLAGS, 4); 2983 dc->cc_size_uptodate = -1; 2984 2985 /* Decode TB flags. */ 2986 dc->tb_flags = tb_flags & (S_FLAG | P_FLAG | U_FLAG | X_FLAG | PFIX_FLAG); 2987 dc->delayed_branch = !!(tb_flags & 7); 2988 if (dc->delayed_branch) { 2989 dc->jmp = JMP_INDIRECT; 2990 } else { 2991 dc->jmp = JMP_NOJMP; 2992 } 2993 } 2994 2995 static void cris_tr_tb_start(DisasContextBase *db, CPUState *cpu) 2996 { 2997 } 2998 2999 static void cris_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu) 3000 { 3001 DisasContext *dc = container_of(dcbase, DisasContext, base); 3002 3003 tcg_gen_insn_start(dc->delayed_branch == 1 ? dc->ppc | 1 : dc->pc); 3004 } 3005 3006 static void cris_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) 3007 { 3008 DisasContext *dc = container_of(dcbase, DisasContext, base); 3009 CPUCRISState *env = cs->env_ptr; 3010 unsigned int insn_len; 3011 3012 /* Pretty disas. */ 3013 LOG_DIS("%8.8x:\t", dc->pc); 3014 3015 dc->clear_x = 1; 3016 3017 insn_len = dc->decoder(env, dc); 3018 dc->ppc = dc->pc; 3019 dc->pc += insn_len; 3020 dc->base.pc_next += insn_len; 3021 3022 if (dc->base.is_jmp == DISAS_NORETURN) { 3023 return; 3024 } 3025 3026 if (dc->clear_x) { 3027 cris_clear_x_flag(dc); 3028 } 3029 3030 /* 3031 * All branches are delayed branches, handled immediately below. 3032 * We don't expect to see odd combinations of exit conditions. 3033 */ 3034 assert(dc->base.is_jmp == DISAS_NEXT || dc->cpustate_changed); 3035 3036 if (dc->delayed_branch && --dc->delayed_branch == 0) { 3037 dc->base.is_jmp = DISAS_DBRANCH; 3038 return; 3039 } 3040 3041 if (dc->base.is_jmp != DISAS_NEXT) { 3042 return; 3043 } 3044 3045 /* Force an update if the per-tb cpu state has changed. */ 3046 if (dc->cpustate_changed) { 3047 dc->base.is_jmp = DISAS_UPDATE_NEXT; 3048 return; 3049 } 3050 3051 /* 3052 * FIXME: Only the first insn in the TB should cross a page boundary. 3053 * If we can detect the length of the next insn easily, we should. 3054 * In the meantime, simply stop when we do cross. 3055 */ 3056 if ((dc->pc ^ dc->base.pc_first) & TARGET_PAGE_MASK) { 3057 dc->base.is_jmp = DISAS_TOO_MANY; 3058 } 3059 } 3060 3061 static void cris_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu) 3062 { 3063 DisasContext *dc = container_of(dcbase, DisasContext, base); 3064 DisasJumpType is_jmp = dc->base.is_jmp; 3065 target_ulong npc = dc->pc; 3066 3067 if (is_jmp == DISAS_NORETURN) { 3068 /* If we have a broken branch+delayslot sequence, it's too late. */ 3069 assert(dc->delayed_branch != 1); 3070 return; 3071 } 3072 3073 if (dc->clear_locked_irq) { 3074 t_gen_movi_env_TN(locked_irq, 0); 3075 } 3076 3077 /* Broken branch+delayslot sequence. */ 3078 if (dc->delayed_branch == 1) { 3079 /* Set env->dslot to the size of the branch insn. */ 3080 t_gen_movi_env_TN(dslot, dc->pc - dc->ppc); 3081 cris_store_direct_jmp(dc); 3082 } 3083 3084 cris_evaluate_flags(dc); 3085 3086 /* Evaluate delayed branch destination and fold to another is_jmp case. */ 3087 if (is_jmp == DISAS_DBRANCH) { 3088 if (dc->base.tb->flags & 7) { 3089 t_gen_movi_env_TN(dslot, 0); 3090 } 3091 3092 switch (dc->jmp) { 3093 case JMP_DIRECT: 3094 npc = dc->jmp_pc; 3095 is_jmp = dc->cpustate_changed ? DISAS_UPDATE_NEXT : DISAS_TOO_MANY; 3096 break; 3097 3098 case JMP_DIRECT_CC: 3099 /* 3100 * Use a conditional branch if either taken or not-taken path 3101 * can use goto_tb. If neither can, then treat it as indirect. 3102 */ 3103 if (likely(!dc->cpustate_changed) 3104 && (use_goto_tb(dc, dc->jmp_pc) || use_goto_tb(dc, npc))) { 3105 TCGLabel *not_taken = gen_new_label(); 3106 3107 tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, not_taken); 3108 gen_goto_tb(dc, 1, dc->jmp_pc); 3109 gen_set_label(not_taken); 3110 3111 /* not-taken case handled below. */ 3112 is_jmp = DISAS_TOO_MANY; 3113 break; 3114 } 3115 tcg_gen_movi_tl(env_btarget, dc->jmp_pc); 3116 /* fall through */ 3117 3118 case JMP_INDIRECT: 3119 tcg_gen_movcond_tl(TCG_COND_NE, env_pc, 3120 env_btaken, tcg_constant_tl(0), 3121 env_btarget, tcg_constant_tl(npc)); 3122 is_jmp = dc->cpustate_changed ? DISAS_UPDATE : DISAS_JUMP; 3123 3124 /* 3125 * We have now consumed btaken and btarget. Hint to the 3126 * tcg compiler that the writeback to env may be dropped. 3127 */ 3128 tcg_gen_discard_tl(env_btaken); 3129 tcg_gen_discard_tl(env_btarget); 3130 break; 3131 3132 default: 3133 g_assert_not_reached(); 3134 } 3135 } 3136 3137 switch (is_jmp) { 3138 case DISAS_TOO_MANY: 3139 gen_goto_tb(dc, 0, npc); 3140 break; 3141 case DISAS_UPDATE_NEXT: 3142 tcg_gen_movi_tl(env_pc, npc); 3143 /* fall through */ 3144 case DISAS_JUMP: 3145 tcg_gen_lookup_and_goto_ptr(); 3146 break; 3147 case DISAS_UPDATE: 3148 /* Indicate that interrupts must be re-evaluated before the next TB. */ 3149 tcg_gen_exit_tb(NULL, 0); 3150 break; 3151 default: 3152 g_assert_not_reached(); 3153 } 3154 } 3155 3156 static void cris_tr_disas_log(const DisasContextBase *dcbase, 3157 CPUState *cpu, FILE *logfile) 3158 { 3159 if (!DISAS_CRIS) { 3160 fprintf(logfile, "IN: %s\n", lookup_symbol(dcbase->pc_first)); 3161 target_disas(logfile, cpu, dcbase->pc_first, dcbase->tb->size); 3162 } 3163 } 3164 3165 static const TranslatorOps cris_tr_ops = { 3166 .init_disas_context = cris_tr_init_disas_context, 3167 .tb_start = cris_tr_tb_start, 3168 .insn_start = cris_tr_insn_start, 3169 .translate_insn = cris_tr_translate_insn, 3170 .tb_stop = cris_tr_tb_stop, 3171 .disas_log = cris_tr_disas_log, 3172 }; 3173 3174 void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int *max_insns, 3175 target_ulong pc, void *host_pc) 3176 { 3177 DisasContext dc; 3178 translator_loop(cs, tb, max_insns, pc, host_pc, &cris_tr_ops, &dc.base); 3179 } 3180 3181 void cris_cpu_dump_state(CPUState *cs, FILE *f, int flags) 3182 { 3183 CRISCPU *cpu = CRIS_CPU(cs); 3184 CPUCRISState *env = &cpu->env; 3185 const char * const *regnames; 3186 const char * const *pregnames; 3187 int i; 3188 3189 if (!env) { 3190 return; 3191 } 3192 if (env->pregs[PR_VR] < 32) { 3193 pregnames = pregnames_v10; 3194 regnames = regnames_v10; 3195 } else { 3196 pregnames = pregnames_v32; 3197 regnames = regnames_v32; 3198 } 3199 3200 qemu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n" 3201 "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n", 3202 env->pc, env->pregs[PR_CCS], env->btaken, env->btarget, 3203 env->cc_op, 3204 env->cc_src, env->cc_dest, env->cc_result, env->cc_mask); 3205 3206 3207 for (i = 0; i < 16; i++) { 3208 qemu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]); 3209 if ((i + 1) % 4 == 0) { 3210 qemu_fprintf(f, "\n"); 3211 } 3212 } 3213 qemu_fprintf(f, "\nspecial regs:\n"); 3214 for (i = 0; i < 16; i++) { 3215 qemu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]); 3216 if ((i + 1) % 4 == 0) { 3217 qemu_fprintf(f, "\n"); 3218 } 3219 } 3220 if (env->pregs[PR_VR] >= 32) { 3221 uint32_t srs = env->pregs[PR_SRS]; 3222 qemu_fprintf(f, "\nsupport function regs bank %x:\n", srs); 3223 if (srs < ARRAY_SIZE(env->sregs)) { 3224 for (i = 0; i < 16; i++) { 3225 qemu_fprintf(f, "s%2.2d=%8.8x ", 3226 i, env->sregs[srs][i]); 3227 if ((i + 1) % 4 == 0) { 3228 qemu_fprintf(f, "\n"); 3229 } 3230 } 3231 } 3232 } 3233 qemu_fprintf(f, "\n\n"); 3234 3235 } 3236 3237 void cris_initialize_tcg(void) 3238 { 3239 int i; 3240 3241 cc_x = tcg_global_mem_new(cpu_env, 3242 offsetof(CPUCRISState, cc_x), "cc_x"); 3243 cc_src = tcg_global_mem_new(cpu_env, 3244 offsetof(CPUCRISState, cc_src), "cc_src"); 3245 cc_dest = tcg_global_mem_new(cpu_env, 3246 offsetof(CPUCRISState, cc_dest), 3247 "cc_dest"); 3248 cc_result = tcg_global_mem_new(cpu_env, 3249 offsetof(CPUCRISState, cc_result), 3250 "cc_result"); 3251 cc_op = tcg_global_mem_new(cpu_env, 3252 offsetof(CPUCRISState, cc_op), "cc_op"); 3253 cc_size = tcg_global_mem_new(cpu_env, 3254 offsetof(CPUCRISState, cc_size), 3255 "cc_size"); 3256 cc_mask = tcg_global_mem_new(cpu_env, 3257 offsetof(CPUCRISState, cc_mask), 3258 "cc_mask"); 3259 3260 env_pc = tcg_global_mem_new(cpu_env, 3261 offsetof(CPUCRISState, pc), 3262 "pc"); 3263 env_btarget = tcg_global_mem_new(cpu_env, 3264 offsetof(CPUCRISState, btarget), 3265 "btarget"); 3266 env_btaken = tcg_global_mem_new(cpu_env, 3267 offsetof(CPUCRISState, btaken), 3268 "btaken"); 3269 for (i = 0; i < 16; i++) { 3270 cpu_R[i] = tcg_global_mem_new(cpu_env, 3271 offsetof(CPUCRISState, regs[i]), 3272 regnames_v32[i]); 3273 } 3274 for (i = 0; i < 16; i++) { 3275 cpu_PR[i] = tcg_global_mem_new(cpu_env, 3276 offsetof(CPUCRISState, pregs[i]), 3277 pregnames_v32[i]); 3278 } 3279 } 3280