target-m68k/op.c

   1 /*
   2  *  m68k micro operations
   3  *
   4  *  Copyright (c) 2006-2007 CodeSourcery
   5  *  Written by Paul Brook
   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 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  * 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, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "exec.h"
  23 #include "m68k-qreg.h"
  24
  25 #ifndef offsetof
  26 #define offsetof(type, field) ((size_t) &((type *)0)->field)
  27 #endif
  28
  29 static long qreg_offsets[] = {
  30 #define DEFO32(name, offset) offsetof(CPUState, offset),
  31 #define DEFR(name, reg, mode) -1,
  32 #define DEFF64(name, offset) offsetof(CPUState, offset),
  33     0,
  34 #include "qregs.def"
  35 };
  36
  37 #define CPU_FP_STATUS env->fp_status
  38
  39 #define RAISE_EXCEPTION(n) do { \
  40     env->exception_index = n; \
  41     cpu_loop_exit(); \
  42     } while(0)
  43
  44 #define get_op helper_get_op
  45 #define set_op helper_set_op
  46 #define get_opf64 helper_get_opf64
  47 #define set_opf64 helper_set_opf64
  48 uint32_t
  49 get_op(int qreg)
  50 {
  51     if (qreg >= TARGET_NUM_QREGS) {
  52         return env->qregs[qreg - TARGET_NUM_QREGS];
  53     } else if (qreg == QREG_T0) {
  54         return T0;
  55     } else {
  56         return *(uint32_t *)(((long)env) + qreg_offsets[qreg]);
  57     }
  58 }
  59
  60 void set_op(int qreg, uint32_t val)
  61 {
  62     if (qreg >= TARGET_NUM_QREGS) {
  63         env->qregs[qreg - TARGET_NUM_QREGS] = val;
  64     } else if (qreg == QREG_T0) {
  65         T0 = val;
  66     } else {
  67         *(uint32_t *)(((long)env) + qreg_offsets[qreg]) = val;
  68     }
  69 }
  70
  71 float64 get_opf64(int qreg)
  72 {
  73     if (qreg < TARGET_NUM_QREGS) {
  74         return *(float64 *)(((long)env) + qreg_offsets[qreg]);
  75     } else {
  76         return *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS];
  77     }
  78 }
  79
  80 void set_opf64(int qreg, float64 val)
  81 {
  82     if (qreg < TARGET_NUM_QREGS) {
  83         *(float64 *)(((long)env) + qreg_offsets[qreg]) = val;
  84     } else {
  85         *(float64 *)&env->qregs[qreg - TARGET_NUM_QREGS] = val;
  86     }
  87 }
  88
  89 #define OP(name) void OPPROTO glue(op_,name) (void)
  90
  91 OP(mov32)
  92 {
  93     set_op(PARAM1, get_op(PARAM2));
  94     FORCE_RET();
  95 }
  96
  97 OP(mov32_im)
  98 {
  99     set_op(PARAM1, PARAM2);
 100     FORCE_RET();
 101 }
 102
 103 OP(movf64)
 104 {
 105     set_opf64(PARAM1, get_opf64(PARAM2));
 106     FORCE_RET();
 107 }
 108
 109 OP(zerof64)
 110 {
 111     set_opf64(PARAM1, 0);
 112     FORCE_RET();
 113 }
 114
 115 OP(add32)
 116 {
 117     uint32_t op2 = get_op(PARAM2);
 118     uint32_t op3 = get_op(PARAM3);
 119     set_op(PARAM1, op2 + op3);
 120     FORCE_RET();
 121 }
 122
 123 OP(sub32)
 124 {
 125     uint32_t op2 = get_op(PARAM2);
 126     uint32_t op3 = get_op(PARAM3);
 127     set_op(PARAM1, op2 - op3);
 128     FORCE_RET();
 129 }
 130
 131 OP(mul32)
 132 {
 133     uint32_t op2 = get_op(PARAM2);
 134     uint32_t op3 = get_op(PARAM3);
 135     set_op(PARAM1, op2 * op3);
 136     FORCE_RET();
 137 }
 138
 139 OP(not32)
 140 {
 141     uint32_t arg = get_op(PARAM2);
 142     set_op(PARAM1, ~arg);
 143     FORCE_RET();
 144 }
 145
 146 OP(neg32)
 147 {
 148     uint32_t arg = get_op(PARAM2);
 149     set_op(PARAM1, -arg);
 150     FORCE_RET();
 151 }
 152
 153 OP(bswap32)
 154 {
 155     uint32_t arg = get_op(PARAM2);
 156     arg = (arg >> 24) | (arg << 24)
 157           | ((arg >> 16) & 0xff00) | ((arg << 16) & 0xff0000);
 158     set_op(PARAM1, arg);
 159     FORCE_RET();
 160 }
 161
 162 OP(btest)
 163 {
 164     uint32_t op1 = get_op(PARAM1);
 165     uint32_t op2 = get_op(PARAM2);
 166     if (op1 & op2)
 167         env->cc_dest &= ~CCF_Z;
 168     else
 169         env->cc_dest |= CCF_Z;
 170     FORCE_RET();
 171 }
 172
 173 OP(ff1)
 174 {
 175     uint32_t arg = get_op(PARAM2);
 176     int n;
 177     for (n = 32; arg; n--)
 178         arg >>= 1;
 179     set_op(PARAM1, n);
 180     FORCE_RET();
 181 }
 182
 183 OP(subx_cc)
 184 {
 185     uint32_t op1 = get_op(PARAM1);
 186     uint32_t op2 = get_op(PARAM2);
 187     uint32_t res;
 188     if (env->cc_x) {
 189         env->cc_x = (op1 <= op2);
 190         env->cc_op = CC_OP_SUBX;
 191         res = op1 - (op2 + 1);
 192     } else {
 193         env->cc_x = (op1 < op2);
 194         env->cc_op = CC_OP_SUB;
 195         res = op1 - op2;
 196     }
 197     set_op(PARAM1, res);
 198     FORCE_RET();
 199 }
 200
 201 OP(addx_cc)
 202 {
 203     uint32_t op1 = get_op(PARAM1);
 204     uint32_t op2 = get_op(PARAM2);
 205     uint32_t res;
 206     if (env->cc_x) {
 207         res = op1 + op2 + 1;
 208         env->cc_x = (res <= op2);
 209         env->cc_op = CC_OP_ADDX;
 210     } else {
 211         res = op1 + op2;
 212         env->cc_x = (res < op2);
 213         env->cc_op = CC_OP_ADD;
 214     }
 215     set_op(PARAM1, res);
 216     FORCE_RET();
 217 }
 218
 219 /* Logic ops.  */
 220
 221 OP(and32)
 222 {
 223     uint32_t op2 = get_op(PARAM2);
 224     uint32_t op3 = get_op(PARAM3);
 225     set_op(PARAM1, op2 & op3);
 226     FORCE_RET();
 227 }
 228
 229 OP(or32)
 230 {
 231     uint32_t op2 = get_op(PARAM2);
 232     uint32_t op3 = get_op(PARAM3);
 233     set_op(PARAM1, op2 | op3);
 234     FORCE_RET();
 235 }
 236
 237 OP(xor32)
 238 {
 239     uint32_t op2 = get_op(PARAM2);
 240     uint32_t op3 = get_op(PARAM3);
 241     set_op(PARAM1, op2 ^ op3);
 242     FORCE_RET();
 243 }
 244
 245 /* Shifts.  */
 246 OP(shl32)
 247 {
 248     uint32_t op2 = get_op(PARAM2);
 249     uint32_t op3 = get_op(PARAM3);
 250     uint32_t result;
 251     result = op2 << op3;
 252     set_op(PARAM1, result);
 253     FORCE_RET();
 254 }
 255
 256 OP(shl_cc)
 257 {
 258     uint32_t op1 = get_op(PARAM1);
 259     uint32_t op2 = get_op(PARAM2);
 260     uint32_t result;
 261     result = op1 << op2;
 262     set_op(PARAM1, result);
 263     env->cc_x = (op1 << (op2 - 1)) & 1;
 264     FORCE_RET();
 265 }
 266
 267 OP(shr32)
 268 {
 269     uint32_t op2 = get_op(PARAM2);
 270     uint32_t op3 = get_op(PARAM3);
 271     uint32_t result;
 272     result = op2 >> op3;
 273     set_op(PARAM1, result);
 274     FORCE_RET();
 275 }
 276
 277 OP(shr_cc)
 278 {
 279     uint32_t op1 = get_op(PARAM1);
 280     uint32_t op2 = get_op(PARAM2);
 281     uint32_t result;
 282     result = op1 >> op2;
 283     set_op(PARAM1, result);
 284     env->cc_x = (op1 >> (op2 - 1)) & 1;
 285     FORCE_RET();
 286 }
 287
 288 OP(sar32)
 289 {
 290     int32_t op2 = get_op(PARAM2);
 291     uint32_t op3 = get_op(PARAM3);
 292     uint32_t result;
 293     result = op2 >> op3;
 294     set_op(PARAM1, result);
 295     FORCE_RET();
 296 }
 297
 298 OP(sar_cc)
 299 {
 300     int32_t op1 = get_op(PARAM1);
 301     uint32_t op2 = get_op(PARAM2);
 302     uint32_t result;
 303     result = op1 >> op2;
 304     set_op(PARAM1, result);
 305     env->cc_x = (op1 >> (op2 - 1)) & 1;
 306     FORCE_RET();
 307 }
 308
 309 /* Value extend.  */
 310
 311 OP(ext8u32)
 312 {
 313     uint32_t op2 = get_op(PARAM2);
 314     set_op(PARAM1, (uint8_t)op2);
 315     FORCE_RET();
 316 }
 317
 318 OP(ext8s32)
 319 {
 320     uint32_t op2 = get_op(PARAM2);
 321     set_op(PARAM1, (int8_t)op2);
 322     FORCE_RET();
 323 }
 324
 325 OP(ext16u32)
 326 {
 327     uint32_t op2 = get_op(PARAM2);
 328     set_op(PARAM1, (uint16_t)op2);
 329     FORCE_RET();
 330 }
 331
 332 OP(ext16s32)
 333 {
 334     uint32_t op2 = get_op(PARAM2);
 335     set_op(PARAM1, (int16_t)op2);
 336     FORCE_RET();
 337 }
 338
 339 OP(flush_flags)
 340 {
 341     cpu_m68k_flush_flags(env, env->cc_op);
 342     FORCE_RET();
 343 }
 344
 345 OP(divu)
 346 {
 347     uint32_t num;
 348     uint32_t den;
 349     uint32_t quot;
 350     uint32_t rem;
 351     uint32_t flags;
 352
 353     num = env->div1;
 354     den = env->div2;
 355     /* ??? This needs to make sure the throwing location is accurate.  */
 356     if (den == 0)
 357         RAISE_EXCEPTION(EXCP_DIV0);
 358     quot = num / den;
 359     rem = num % den;
 360     flags = 0;
 361     /* Avoid using a PARAM1 of zero.  This breaks dyngen because it uses
 362        the address of a symbol, and gcc knows symbols can't have address
 363        zero.  */
 364     if (PARAM1 == 2 && quot > 0xffff)
 365         flags |= CCF_V;
 366     if (quot == 0)
 367         flags |= CCF_Z;
 368     else if ((int32_t)quot < 0)
 369         flags |= CCF_N;
 370     env->div1 = quot;
 371     env->div2 = rem;
 372     env->cc_dest = flags;
 373     FORCE_RET();
 374 }
 375
 376 OP(divs)
 377 {
 378     int32_t num;
 379     int32_t den;
 380     int32_t quot;
 381     int32_t rem;
 382     int32_t flags;
 383
 384     num = env->div1;
 385     den = env->div2;
 386     if (den == 0)
 387         RAISE_EXCEPTION(EXCP_DIV0);
 388     quot = num / den;
 389     rem = num % den;
 390     flags = 0;
 391     if (PARAM1 == 2 && quot != (int16_t)quot)
 392         flags |= CCF_V;
 393     if (quot == 0)
 394         flags |= CCF_Z;
 395     else if (quot < 0)
 396         flags |= CCF_N;
 397     env->div1 = quot;
 398     env->div2 = rem;
 399     env->cc_dest = flags;
 400     FORCE_RET();
 401 }
 402
 403 /* Halt is special because it may be a semihosting call.  */
 404 OP(halt)
 405 {
 406     RAISE_EXCEPTION(EXCP_HALT_INSN);
 407     FORCE_RET();
 408 }
 409
 410 OP(stop)
 411 {
 412     env->halted = 1;
 413     RAISE_EXCEPTION(EXCP_HLT);
 414     FORCE_RET();
 415 }
 416
 417 OP(raise_exception)
 418 {
 419     RAISE_EXCEPTION(PARAM1);
 420     FORCE_RET();
 421 }
 422
 423 /* Floating point comparison sets flags differently to other instructions.  */
 424
 425 OP(sub_cmpf64)
 426 {
 427     float64 src0;
 428     float64 src1;
 429     src0 = get_opf64(PARAM2);
 430     src1 = get_opf64(PARAM3);
 431     set_opf64(PARAM1, helper_sub_cmpf64(env, src0, src1));
 432     FORCE_RET();
 433 }
 434
 435 OP(update_xflag_tst)
 436 {
 437     uint32_t op1 = get_op(PARAM1);
 438     env->cc_x = op1;
 439     FORCE_RET();
 440 }
 441
 442 OP(update_xflag_lt)
 443 {
 444     uint32_t op1 = get_op(PARAM1);
 445     uint32_t op2 = get_op(PARAM2);
 446     env->cc_x = (op1 < op2);
 447     FORCE_RET();
 448 }
 449
 450 OP(get_xflag)
 451 {
 452     set_op(PARAM1, env->cc_x);
 453     FORCE_RET();
 454 }
 455
 456 OP(logic_cc)
 457 {
 458     uint32_t op1 = get_op(PARAM1);
 459     env->cc_dest = op1;
 460     FORCE_RET();
 461 }
 462
 463 OP(update_cc_add)
 464 {
 465     uint32_t op1 = get_op(PARAM1);
 466     uint32_t op2 = get_op(PARAM2);
 467     env->cc_dest = op1;
 468     env->cc_src = op2;
 469     FORCE_RET();
 470 }
 471
 472 OP(fp_result)
 473 {
 474     env->fp_result = get_opf64(PARAM1);
 475     FORCE_RET();
 476 }
 477
 478 OP(set_sr)
 479 {
 480     env->sr = get_op(PARAM1) & 0xffff;
 481     m68k_switch_sp(env);
 482     FORCE_RET();
 483 }
 484
 485 OP(jmp)
 486 {
 487     GOTO_LABEL_PARAM(1);
 488 }
 489
 490 OP(set_T0_z32)
 491 {
 492     uint32_t arg = get_op(PARAM1);
 493     T0 = (arg == 0);
 494     FORCE_RET();
 495 }
 496
 497 OP(set_T0_nz32)
 498 {
 499     uint32_t arg = get_op(PARAM1);
 500     T0 = (arg != 0);
 501     FORCE_RET();
 502 }
 503
 504 OP(set_T0_s32)
 505 {
 506     int32_t arg = get_op(PARAM1);
 507     T0 = (arg > 0);
 508     FORCE_RET();
 509 }
 510
 511 OP(set_T0_ns32)
 512 {
 513     int32_t arg = get_op(PARAM1);
 514     T0 = (arg >= 0);
 515     FORCE_RET();
 516 }
 517
 518 OP(jmp_T0)
 519 {
 520     if (T0)
 521         GOTO_LABEL_PARAM(1);
 522     FORCE_RET();
 523 }
 524
 525 void OPPROTO op_goto_tb0(void)
 526 {
 527     GOTO_TB(op_goto_tb0, PARAM1, 0);
 528 }
 529
 530 void OPPROTO op_goto_tb1(void)
 531 {
 532     GOTO_TB(op_goto_tb1, PARAM1, 1);
 533 }
 534
 535 OP(exit_tb)
 536 {
 537     EXIT_TB();
 538 }
 539
 540
 541 /* Floating point.  */
 542 OP(f64_to_i32)
 543 {
 544     set_op(PARAM1, float64_to_int32(get_opf64(PARAM2), &CPU_FP_STATUS));
 545     FORCE_RET();
 546 }
 547
 548 OP(f64_to_f32)
 549 {
 550     union {
 551         float32 f;
 552         uint32_t i;
 553     } u;
 554     u.f = float64_to_float32(get_opf64(PARAM2), &CPU_FP_STATUS);
 555     set_op(PARAM1, u.i);
 556     FORCE_RET();
 557 }
 558
 559 OP(i32_to_f64)
 560 {
 561     set_opf64(PARAM1, int32_to_float64(get_op(PARAM2), &CPU_FP_STATUS));
 562     FORCE_RET();
 563 }
 564
 565 OP(f32_to_f64)
 566 {
 567     union {
 568         float32 f;
 569         uint32_t i;
 570     } u;
 571     u.i = get_op(PARAM2);
 572     set_opf64(PARAM1, float32_to_float64(u.f, &CPU_FP_STATUS));
 573     FORCE_RET();
 574 }
 575
 576 OP(absf64)
 577 {
 578     float64 op0 = get_opf64(PARAM2);
 579     set_opf64(PARAM1, float64_abs(op0));
 580     FORCE_RET();
 581 }
 582
 583 OP(chsf64)
 584 {
 585     float64 op0 = get_opf64(PARAM2);
 586     set_opf64(PARAM1, float64_chs(op0));
 587     FORCE_RET();
 588 }
 589
 590 OP(sqrtf64)
 591 {
 592     float64 op0 = get_opf64(PARAM2);
 593     set_opf64(PARAM1, float64_sqrt(op0, &CPU_FP_STATUS));
 594     FORCE_RET();
 595 }
 596
 597 OP(addf64)
 598 {
 599     float64 op0 = get_opf64(PARAM2);
 600     float64 op1 = get_opf64(PARAM3);
 601     set_opf64(PARAM1, float64_add(op0, op1, &CPU_FP_STATUS));
 602     FORCE_RET();
 603 }
 604
 605 OP(subf64)
 606 {
 607     float64 op0 = get_opf64(PARAM2);
 608     float64 op1 = get_opf64(PARAM3);
 609     set_opf64(PARAM1, float64_sub(op0, op1, &CPU_FP_STATUS));
 610     FORCE_RET();
 611 }
 612
 613 OP(mulf64)
 614 {
 615     float64 op0 = get_opf64(PARAM2);
 616     float64 op1 = get_opf64(PARAM3);
 617     set_opf64(PARAM1, float64_mul(op0, op1, &CPU_FP_STATUS));
 618     FORCE_RET();
 619 }
 620
 621 OP(divf64)
 622 {
 623     float64 op0 = get_opf64(PARAM2);
 624     float64 op1 = get_opf64(PARAM3);
 625     set_opf64(PARAM1, float64_div(op0, op1, &CPU_FP_STATUS));
 626     FORCE_RET();
 627 }
 628
 629 OP(iround_f64)
 630 {
 631     float64 op0 = get_opf64(PARAM2);
 632     set_opf64(PARAM1, float64_round_to_int(op0, &CPU_FP_STATUS));
 633     FORCE_RET();
 634 }
 635
 636 OP(itrunc_f64)
 637 {
 638     float64 op0 = get_opf64(PARAM2);
 639     set_opf64(PARAM1, float64_trunc_to_int(op0, &CPU_FP_STATUS));
 640     FORCE_RET();
 641 }
 642
 643 OP(compare_quietf64)
 644 {
 645     float64 op0 = get_opf64(PARAM2);
 646     float64 op1 = get_opf64(PARAM3);
 647     set_op(PARAM1, float64_compare_quiet(op0, op1, &CPU_FP_STATUS));
 648     FORCE_RET();
 649 }
 650
 651 OP(movec)
 652 {
 653     int op1 = get_op(PARAM1);
 654     uint32_t op2 = get_op(PARAM2);
 655     helper_movec(env, op1, op2);
 656 }
 657
 658 /* Memory access.  */
 659
 660 #define MEMSUFFIX _raw
 661 #include "op_mem.h"
 662
 663 #if !defined(CONFIG_USER_ONLY)
 664 #define MEMSUFFIX _user
 665 #include "op_mem.h"
 666 #define MEMSUFFIX _kernel
 667 #include "op_mem.h"
 668 #endif
 669
 670 /* MAC unit.  */
 671 /* TODO: The MAC instructions use 64-bit arithmetic fairly extensively.
 672    This results in fairly large ops (and sometimes other issues) on 32-bit
 673    hosts.  Maybe move most of them into helpers.  */
 674 OP(macmuls)
 675 {
 676     uint32_t op1 = get_op(PARAM1);
 677     uint32_t op2 = get_op(PARAM2);
 678     int64_t product;
 679     int64_t res;
 680
 681     product = (uint64_t)op1 * op2;
 682     res = (product << 24) >> 24;
 683     if (res != product) {
 684         env->macsr |= MACSR_V;
 685         if (env->macsr & MACSR_OMC) {
 686             /* Make sure the accumulate operation overflows.  */
 687             if (product < 0)
 688                 res = ~(1ll << 50);
 689             else
 690                 res = 1ll << 50;
 691         }
 692     }
 693     env->mactmp = res;
 694     FORCE_RET();
 695 }
 696
 697 OP(macmulu)
 698 {
 699     uint32_t op1 = get_op(PARAM1);
 700     uint32_t op2 = get_op(PARAM2);
 701     uint64_t product;
 702
 703     product = (uint64_t)op1 * op2;
 704     if (product & (0xffffffull << 40)) {
 705         env->macsr |= MACSR_V;
 706         if (env->macsr & MACSR_OMC) {
 707             /* Make sure the accumulate operation overflows.  */
 708             product = 1ll << 50;
 709         } else {
 710             product &= ((1ull << 40) - 1);
 711         }
 712     }
 713     env->mactmp = product;
 714     FORCE_RET();
 715 }
 716
 717 OP(macmulf)
 718 {
 719     int32_t op1 = get_op(PARAM1);
 720     int32_t op2 = get_op(PARAM2);
 721     uint64_t product;
 722     uint32_t remainder;
 723
 724     product = (uint64_t)op1 * op2;
 725     if (env->macsr & MACSR_RT) {
 726         remainder = product & 0xffffff;
 727         product >>= 24;
 728         if (remainder > 0x800000)
 729             product++;
 730         else if (remainder == 0x800000)
 731             product += (product & 1);
 732     } else {
 733         product >>= 24;
 734     }
 735     env->mactmp = product;
 736     FORCE_RET();
 737 }
 738
 739 OP(macshl)
 740 {
 741     env->mactmp <<= 1;
 742 }
 743
 744 OP(macshr)
 745 {
 746     env->mactmp >>= 1;
 747 }
 748
 749 OP(macadd)
 750 {
 751     int acc = PARAM1;
 752     env->macc[acc] += env->mactmp;
 753     FORCE_RET();
 754 }
 755
 756 OP(macsub)
 757 {
 758     int acc = PARAM1;
 759     env->macc[acc] -= env->mactmp;
 760     FORCE_RET();
 761 }
 762
 763 OP(macsats)
 764 {
 765     int acc = PARAM1;
 766     int64_t sum;
 767     int64_t result;
 768
 769     sum = env->macc[acc];
 770     result = (sum << 16) >> 16;
 771     if (result != sum) {
 772         env->macsr |= MACSR_V;
 773     }
 774     if (env->macsr & MACSR_V) {
 775         env->macsr |= MACSR_PAV0 << acc;
 776         if (env->macsr & MACSR_OMC) {
 777             /* The result is saturated to 32 bits, despite overflow occuring
 778                at 48 bits.  Seems weird, but that's what the hardware docs
 779                say.  */
 780             result = (result >> 63) ^ 0x7fffffff;
 781         }
 782     }
 783     env->macc[acc] = result;
 784     FORCE_RET();
 785 }
 786
 787 OP(macsatu)
 788 {
 789     int acc = PARAM1;
 790     uint64_t sum;
 791
 792     sum = env->macc[acc];
 793     if (sum & (0xffffull << 48)) {
 794         env->macsr |= MACSR_V;
 795     }
 796     if (env->macsr & MACSR_V) {
 797         env->macsr |= MACSR_PAV0 << acc;
 798         if (env->macsr & MACSR_OMC) {
 799             if (sum > (1ull << 53))
 800                 sum = 0;
 801             else
 802                 sum = (1ull << 48) - 1;
 803         } else {
 804             sum &= ((1ull << 48) - 1);
 805         }
 806     }
 807     FORCE_RET();
 808 }
 809
 810 OP(macsatf)
 811 {
 812     int acc = PARAM1;
 813     int64_t sum;
 814     int64_t result;
 815
 816     sum = env->macc[acc];
 817     result = (sum << 16) >> 16;
 818     if (result != sum) {
 819         env->macsr |= MACSR_V;
 820     }
 821     if (env->macsr & MACSR_V) {
 822         env->macsr |= MACSR_PAV0 << acc;
 823         if (env->macsr & MACSR_OMC) {
 824             result = (result >> 63) ^ 0x7fffffffffffll;
 825         }
 826     }
 827     env->macc[acc] = result;
 828     FORCE_RET();
 829 }
 830
 831 OP(mac_clear_flags)
 832 {
 833     env->macsr &= ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV);
 834 }
 835
 836 OP(mac_set_flags)
 837 {
 838     int acc = PARAM1;
 839     uint64_t val;
 840     val = env->macc[acc];
 841     if (val == 0)
 842         env->macsr |= MACSR_Z;
 843     else if (val & (1ull << 47));
 844         env->macsr |= MACSR_N;
 845     if (env->macsr & (MACSR_PAV0 << acc)) {
 846         env->macsr |= MACSR_V;
 847     }
 848     if (env->macsr & MACSR_FI) {
 849         val = ((int64_t)val) >> 40;
 850         if (val != 0 && val != -1)
 851             env->macsr |= MACSR_EV;
 852     } else if (env->macsr & MACSR_SU) {
 853         val = ((int64_t)val) >> 32;
 854         if (val != 0 && val != -1)
 855             env->macsr |= MACSR_EV;
 856     } else {
 857         if ((val >> 32) != 0)
 858             env->macsr |= MACSR_EV;
 859     }
 860     FORCE_RET();
 861 }
 862
 863 OP(get_macf)
 864 {
 865     int acc = PARAM2;
 866     int64_t val;
 867     int rem;
 868     uint32_t result;
 869
 870     val = env->macc[acc];
 871     if (env->macsr & MACSR_SU) {
 872         /* 16-bit rounding.  */
 873         rem = val & 0xffffff;
 874         val = (val >> 24) & 0xffffu;
 875         if (rem > 0x800000)
 876             val++;
 877         else if (rem == 0x800000)
 878             val += (val & 1);
 879     } else if (env->macsr & MACSR_RT) {
 880         /* 32-bit rounding.  */
 881         rem = val & 0xff;
 882         val >>= 8;
 883         if (rem > 0x80)
 884             val++;
 885         else if (rem == 0x80)
 886             val += (val & 1);
 887     } else {
 888         /* No rounding.  */
 889         val >>= 8;
 890     }
 891     if (env->macsr & MACSR_OMC) {
 892         /* Saturate.  */
 893         if (env->macsr & MACSR_SU) {
 894             if (val != (uint16_t) val) {
 895                 result = ((val >> 63) ^ 0x7fff) & 0xffff;
 896             } else {
 897                 result = val & 0xffff;
 898             }
 899         } else {
 900             if (val != (uint32_t)val) {
 901                 result = ((uint32_t)(val >> 63) & 0x7fffffff);
 902             } else {
 903                 result = (uint32_t)val;
 904             }
 905         }
 906     } else {
 907         /* No saturation.  */
 908         if (env->macsr & MACSR_SU) {
 909             result = val & 0xffff;
 910         } else {
 911             result = (uint32_t)val;
 912         }
 913     }
 914     set_op(PARAM1, result);
 915     FORCE_RET();
 916 }
 917
 918 OP(get_maci)
 919 {
 920     int acc = PARAM2;
 921     set_op(PARAM1, (uint32_t)env->macc[acc]);
 922     FORCE_RET();
 923 }
 924
 925 OP(get_macs)
 926 {
 927     int acc = PARAM2;
 928     int64_t val = env->macc[acc];
 929     uint32_t result;
 930     if (val == (int32_t)val) {
 931         result = (int32_t)val;
 932     } else {
 933         result = (val >> 61) ^ 0x7fffffff;
 934     }
 935     set_op(PARAM1, result);
 936     FORCE_RET();
 937 }
 938
 939 OP(get_macu)
 940 {
 941     int acc = PARAM2;
 942     uint64_t val = env->macc[acc];
 943     uint32_t result;
 944     if ((val >> 32) == 0) {
 945         result = (uint32_t)val;
 946     } else {
 947         result = 0xffffffffu;
 948     }
 949     set_op(PARAM1, result);
 950     FORCE_RET();
 951 }
 952
 953 OP(clear_mac)
 954 {
 955     int acc = PARAM1;
 956
 957     env->macc[acc] = 0;
 958     env->macsr &= ~(MACSR_PAV0 << acc);
 959     FORCE_RET();
 960 }
 961
 962 OP(move_mac)
 963 {
 964     int dest = PARAM1;
 965     int src = PARAM2;
 966     uint32_t mask;
 967     env->macc[dest] = env->macc[src];
 968     mask = MACSR_PAV0 << dest;
 969     if (env->macsr & (MACSR_PAV0 << src))
 970         env->macsr |= mask;
 971     else
 972         env->macsr &= ~mask;
 973     FORCE_RET();
 974 }
 975
 976 OP(get_mac_extf)
 977 {
 978     uint32_t val;
 979     int acc = PARAM2;
 980     val = env->macc[acc] & 0x00ff;
 981     val = (env->macc[acc] >> 32) & 0xff00;
 982     val |= (env->macc[acc + 1] << 16) & 0x00ff0000;
 983     val |= (env->macc[acc + 1] >> 16) & 0xff000000;
 984     set_op(PARAM1, val);
 985     FORCE_RET();
 986 }
 987
 988 OP(get_mac_exti)
 989 {
 990     uint32_t val;
 991     int acc = PARAM2;
 992     val = (env->macc[acc] >> 32) & 0xffff;
 993     val |= (env->macc[acc + 1] >> 16) & 0xffff0000;
 994     set_op(PARAM1, val);
 995     FORCE_RET();
 996 }
 997
 998 OP(set_macf)
 999 {
1000     int acc = PARAM2;
1001     int32_t val = get_op(PARAM1);
1002     env->macc[acc] = ((int64_t)val) << 8;
1003     env->macsr &= ~(MACSR_PAV0 << acc);
1004     FORCE_RET();
1005 }
1006
1007 OP(set_macs)
1008 {
1009     int acc = PARAM2;
1010     int32_t val = get_op(PARAM1);
1011     env->macc[acc] = val;
1012     env->macsr &= ~(MACSR_PAV0 << acc);
1013     FORCE_RET();
1014 }
1015
1016 OP(set_macu)
1017 {
1018     int acc = PARAM2;
1019     uint32_t val = get_op(PARAM1);
1020     env->macc[acc] = val;
1021     env->macsr &= ~(MACSR_PAV0 << acc);
1022     FORCE_RET();
1023 }
1024
1025 OP(set_mac_extf)
1026 {
1027     int acc = PARAM2;
1028     int32_t val = get_op(PARAM1);
1029     int64_t res;
1030     int32_t tmp;
1031     res = env->macc[acc] & 0xffffffff00ull;
1032     tmp = (int16_t)(val & 0xff00);
1033     res |= ((int64_t)tmp) << 32;
1034     res |= val & 0xff;
1035     env->macc[acc] = res;
1036     res = env->macc[acc + 1] & 0xffffffff00ull;
1037     tmp = (val & 0xff000000);
1038     res |= ((int64_t)tmp) << 16;
1039     res |= (val >> 16) & 0xff;
1040     env->macc[acc + 1] = res;
1041 }
1042
1043 OP(set_mac_exts)
1044 {
1045     int acc = PARAM2;
1046     int32_t val = get_op(PARAM1);
1047     int64_t res;
1048     int32_t tmp;
1049     res = (uint32_t)env->macc[acc];
1050     tmp = (int16_t)val;
1051     res |= ((int64_t)tmp) << 32;
1052     env->macc[acc] = res;
1053     res = (uint32_t)env->macc[acc + 1];
1054     tmp = val & 0xffff0000;
1055     res |= (int64_t)tmp << 16;
1056     env->macc[acc + 1] = res;
1057 }
1058
1059 OP(set_mac_extu)
1060 {
1061     int acc = PARAM2;
1062     int32_t val = get_op(PARAM1);
1063     uint64_t res;
1064     res = (uint32_t)env->macc[acc];
1065     res |= ((uint64_t)(val & 0xffff)) << 32;
1066     env->macc[acc] = res;
1067     res = (uint32_t)env->macc[acc + 1];
1068     res |= (uint64_t)(val & 0xffff0000) << 16;
1069     env->macc[acc + 1] = res;
1070 }
1071
1072 OP(set_macsr)
1073 {
1074     m68k_set_macsr(env, get_op(PARAM1));
1075 }