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, float64_zero);
 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_im)
 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 /* Floating point.  */
 526 OP(f64_to_i32)
 527 {
 528     set_op(PARAM1, float64_to_int32(get_opf64(PARAM2), &CPU_FP_STATUS));
 529     FORCE_RET();
 530 }
 531
 532 OP(f64_to_f32)
 533 {
 534     union {
 535         float32 f;
 536         uint32_t i;
 537     } u;
 538     u.f = float64_to_float32(get_opf64(PARAM2), &CPU_FP_STATUS);
 539     set_op(PARAM1, u.i);
 540     FORCE_RET();
 541 }
 542
 543 OP(i32_to_f64)
 544 {
 545     set_opf64(PARAM1, int32_to_float64(get_op(PARAM2), &CPU_FP_STATUS));
 546     FORCE_RET();
 547 }
 548
 549 OP(f32_to_f64)
 550 {
 551     union {
 552         float32 f;
 553         uint32_t i;
 554     } u;
 555     u.i = get_op(PARAM2);
 556     set_opf64(PARAM1, float32_to_float64(u.f, &CPU_FP_STATUS));
 557     FORCE_RET();
 558 }
 559
 560 OP(absf64)
 561 {
 562     float64 op0 = get_opf64(PARAM2);
 563     set_opf64(PARAM1, float64_abs(op0));
 564     FORCE_RET();
 565 }
 566
 567 OP(chsf64)
 568 {
 569     float64 op0 = get_opf64(PARAM2);
 570     set_opf64(PARAM1, float64_chs(op0));
 571     FORCE_RET();
 572 }
 573
 574 OP(sqrtf64)
 575 {
 576     float64 op0 = get_opf64(PARAM2);
 577     set_opf64(PARAM1, float64_sqrt(op0, &CPU_FP_STATUS));
 578     FORCE_RET();
 579 }
 580
 581 OP(addf64)
 582 {
 583     float64 op0 = get_opf64(PARAM2);
 584     float64 op1 = get_opf64(PARAM3);
 585     set_opf64(PARAM1, float64_add(op0, op1, &CPU_FP_STATUS));
 586     FORCE_RET();
 587 }
 588
 589 OP(subf64)
 590 {
 591     float64 op0 = get_opf64(PARAM2);
 592     float64 op1 = get_opf64(PARAM3);
 593     set_opf64(PARAM1, float64_sub(op0, op1, &CPU_FP_STATUS));
 594     FORCE_RET();
 595 }
 596
 597 OP(mulf64)
 598 {
 599     float64 op0 = get_opf64(PARAM2);
 600     float64 op1 = get_opf64(PARAM3);
 601     set_opf64(PARAM1, float64_mul(op0, op1, &CPU_FP_STATUS));
 602     FORCE_RET();
 603 }
 604
 605 OP(divf64)
 606 {
 607     float64 op0 = get_opf64(PARAM2);
 608     float64 op1 = get_opf64(PARAM3);
 609     set_opf64(PARAM1, float64_div(op0, op1, &CPU_FP_STATUS));
 610     FORCE_RET();
 611 }
 612
 613 OP(iround_f64)
 614 {
 615     float64 op0 = get_opf64(PARAM2);
 616     set_opf64(PARAM1, float64_round_to_int(op0, &CPU_FP_STATUS));
 617     FORCE_RET();
 618 }
 619
 620 OP(itrunc_f64)
 621 {
 622     float64 op0 = get_opf64(PARAM2);
 623     set_opf64(PARAM1, float64_trunc_to_int(op0, &CPU_FP_STATUS));
 624     FORCE_RET();
 625 }
 626
 627 OP(compare_quietf64)
 628 {
 629     float64 op0 = get_opf64(PARAM2);
 630     float64 op1 = get_opf64(PARAM3);
 631     set_op(PARAM1, float64_compare_quiet(op0, op1, &CPU_FP_STATUS));
 632     FORCE_RET();
 633 }
 634
 635 OP(movec)
 636 {
 637     int op1 = get_op(PARAM1);
 638     uint32_t op2 = get_op(PARAM2);
 639     helper_movec(env, op1, op2);
 640 }
 641
 642 /* Memory access.  */
 643
 644 #define MEMSUFFIX _raw
 645 #include "op_mem.h"
 646
 647 #if !defined(CONFIG_USER_ONLY)
 648 #define MEMSUFFIX _user
 649 #include "op_mem.h"
 650 #define MEMSUFFIX _kernel
 651 #include "op_mem.h"
 652 #endif
 653
 654 /* MAC unit.  */
 655 /* TODO: The MAC instructions use 64-bit arithmetic fairly extensively.
 656    This results in fairly large ops (and sometimes other issues) on 32-bit
 657    hosts.  Maybe move most of them into helpers.  */
 658 OP(macmuls)
 659 {
 660     uint32_t op1 = get_op(PARAM1);
 661     uint32_t op2 = get_op(PARAM2);
 662     int64_t product;
 663     int64_t res;
 664
 665     product = (uint64_t)op1 * op2;
 666     res = (product << 24) >> 24;
 667     if (res != product) {
 668         env->macsr |= MACSR_V;
 669         if (env->macsr & MACSR_OMC) {
 670             /* Make sure the accumulate operation overflows.  */
 671             if (product < 0)
 672                 res = ~(1ll << 50);
 673             else
 674                 res = 1ll << 50;
 675         }
 676     }
 677     env->mactmp = res;
 678     FORCE_RET();
 679 }
 680
 681 OP(macmulu)
 682 {
 683     uint32_t op1 = get_op(PARAM1);
 684     uint32_t op2 = get_op(PARAM2);
 685     uint64_t product;
 686
 687     product = (uint64_t)op1 * op2;
 688     if (product & (0xffffffull << 40)) {
 689         env->macsr |= MACSR_V;
 690         if (env->macsr & MACSR_OMC) {
 691             /* Make sure the accumulate operation overflows.  */
 692             product = 1ll << 50;
 693         } else {
 694             product &= ((1ull << 40) - 1);
 695         }
 696     }
 697     env->mactmp = product;
 698     FORCE_RET();
 699 }
 700
 701 OP(macmulf)
 702 {
 703     int32_t op1 = get_op(PARAM1);
 704     int32_t op2 = get_op(PARAM2);
 705     uint64_t product;
 706     uint32_t remainder;
 707
 708     product = (uint64_t)op1 * op2;
 709     if (env->macsr & MACSR_RT) {
 710         remainder = product & 0xffffff;
 711         product >>= 24;
 712         if (remainder > 0x800000)
 713             product++;
 714         else if (remainder == 0x800000)
 715             product += (product & 1);
 716     } else {
 717         product >>= 24;
 718     }
 719     env->mactmp = product;
 720     FORCE_RET();
 721 }
 722
 723 OP(macshl)
 724 {
 725     env->mactmp <<= 1;
 726 }
 727
 728 OP(macshr)
 729 {
 730     env->mactmp >>= 1;
 731 }
 732
 733 OP(macadd)
 734 {
 735     int acc = PARAM1;
 736     env->macc[acc] += env->mactmp;
 737     FORCE_RET();
 738 }
 739
 740 OP(macsub)
 741 {
 742     int acc = PARAM1;
 743     env->macc[acc] -= env->mactmp;
 744     FORCE_RET();
 745 }
 746
 747 OP(macsats)
 748 {
 749     int acc = PARAM1;
 750     int64_t sum;
 751     int64_t result;
 752
 753     sum = env->macc[acc];
 754     result = (sum << 16) >> 16;
 755     if (result != sum) {
 756         env->macsr |= MACSR_V;
 757     }
 758     if (env->macsr & MACSR_V) {
 759         env->macsr |= MACSR_PAV0 << acc;
 760         if (env->macsr & MACSR_OMC) {
 761             /* The result is saturated to 32 bits, despite overflow occuring
 762                at 48 bits.  Seems weird, but that's what the hardware docs
 763                say.  */
 764             result = (result >> 63) ^ 0x7fffffff;
 765         }
 766     }
 767     env->macc[acc] = result;
 768     FORCE_RET();
 769 }
 770
 771 OP(macsatu)
 772 {
 773     int acc = PARAM1;
 774     uint64_t sum;
 775
 776     sum = env->macc[acc];
 777     if (sum & (0xffffull << 48)) {
 778         env->macsr |= MACSR_V;
 779     }
 780     if (env->macsr & MACSR_V) {
 781         env->macsr |= MACSR_PAV0 << acc;
 782         if (env->macsr & MACSR_OMC) {
 783             if (sum > (1ull << 53))
 784                 sum = 0;
 785             else
 786                 sum = (1ull << 48) - 1;
 787         } else {
 788             sum &= ((1ull << 48) - 1);
 789         }
 790     }
 791     FORCE_RET();
 792 }
 793
 794 OP(macsatf)
 795 {
 796     int acc = PARAM1;
 797     int64_t sum;
 798     int64_t result;
 799
 800     sum = env->macc[acc];
 801     result = (sum << 16) >> 16;
 802     if (result != sum) {
 803         env->macsr |= MACSR_V;
 804     }
 805     if (env->macsr & MACSR_V) {
 806         env->macsr |= MACSR_PAV0 << acc;
 807         if (env->macsr & MACSR_OMC) {
 808             result = (result >> 63) ^ 0x7fffffffffffll;
 809         }
 810     }
 811     env->macc[acc] = result;
 812     FORCE_RET();
 813 }
 814
 815 OP(mac_clear_flags)
 816 {
 817     env->macsr &= ~(MACSR_V | MACSR_Z | MACSR_N | MACSR_EV);
 818 }
 819
 820 OP(mac_set_flags)
 821 {
 822     int acc = PARAM1;
 823     uint64_t val;
 824     val = env->macc[acc];
 825     if (val == 0)
 826         env->macsr |= MACSR_Z;
 827     else if (val & (1ull << 47));
 828         env->macsr |= MACSR_N;
 829     if (env->macsr & (MACSR_PAV0 << acc)) {
 830         env->macsr |= MACSR_V;
 831     }
 832     if (env->macsr & MACSR_FI) {
 833         val = ((int64_t)val) >> 40;
 834         if (val != 0 && val != -1)
 835             env->macsr |= MACSR_EV;
 836     } else if (env->macsr & MACSR_SU) {
 837         val = ((int64_t)val) >> 32;
 838         if (val != 0 && val != -1)
 839             env->macsr |= MACSR_EV;
 840     } else {
 841         if ((val >> 32) != 0)
 842             env->macsr |= MACSR_EV;
 843     }
 844     FORCE_RET();
 845 }
 846
 847 OP(get_macf)
 848 {
 849     int acc = PARAM2;
 850     int64_t val;
 851     int rem;
 852     uint32_t result;
 853
 854     val = env->macc[acc];
 855     if (env->macsr & MACSR_SU) {
 856         /* 16-bit rounding.  */
 857         rem = val & 0xffffff;
 858         val = (val >> 24) & 0xffffu;
 859         if (rem > 0x800000)
 860             val++;
 861         else if (rem == 0x800000)
 862             val += (val & 1);
 863     } else if (env->macsr & MACSR_RT) {
 864         /* 32-bit rounding.  */
 865         rem = val & 0xff;
 866         val >>= 8;
 867         if (rem > 0x80)
 868             val++;
 869         else if (rem == 0x80)
 870             val += (val & 1);
 871     } else {
 872         /* No rounding.  */
 873         val >>= 8;
 874     }
 875     if (env->macsr & MACSR_OMC) {
 876         /* Saturate.  */
 877         if (env->macsr & MACSR_SU) {
 878             if (val != (uint16_t) val) {
 879                 result = ((val >> 63) ^ 0x7fff) & 0xffff;
 880             } else {
 881                 result = val & 0xffff;
 882             }
 883         } else {
 884             if (val != (uint32_t)val) {
 885                 result = ((uint32_t)(val >> 63) & 0x7fffffff);
 886             } else {
 887                 result = (uint32_t)val;
 888             }
 889         }
 890     } else {
 891         /* No saturation.  */
 892         if (env->macsr & MACSR_SU) {
 893             result = val & 0xffff;
 894         } else {
 895             result = (uint32_t)val;
 896         }
 897     }
 898     set_op(PARAM1, result);
 899     FORCE_RET();
 900 }
 901
 902 OP(get_maci)
 903 {
 904     int acc = PARAM2;
 905     set_op(PARAM1, (uint32_t)env->macc[acc]);
 906     FORCE_RET();
 907 }
 908
 909 OP(get_macs)
 910 {
 911     int acc = PARAM2;
 912     int64_t val = env->macc[acc];
 913     uint32_t result;
 914     if (val == (int32_t)val) {
 915         result = (int32_t)val;
 916     } else {
 917         result = (val >> 61) ^ 0x7fffffff;
 918     }
 919     set_op(PARAM1, result);
 920     FORCE_RET();
 921 }
 922
 923 OP(get_macu)
 924 {
 925     int acc = PARAM2;
 926     uint64_t val = env->macc[acc];
 927     uint32_t result;
 928     if ((val >> 32) == 0) {
 929         result = (uint32_t)val;
 930     } else {
 931         result = 0xffffffffu;
 932     }
 933     set_op(PARAM1, result);
 934     FORCE_RET();
 935 }
 936
 937 OP(clear_mac)
 938 {
 939     int acc = PARAM1;
 940
 941     env->macc[acc] = 0;
 942     env->macsr &= ~(MACSR_PAV0 << acc);
 943     FORCE_RET();
 944 }
 945
 946 OP(move_mac)
 947 {
 948     int dest = PARAM1;
 949     int src = PARAM2;
 950     uint32_t mask;
 951     env->macc[dest] = env->macc[src];
 952     mask = MACSR_PAV0 << dest;
 953     if (env->macsr & (MACSR_PAV0 << src))
 954         env->macsr |= mask;
 955     else
 956         env->macsr &= ~mask;
 957     FORCE_RET();
 958 }
 959
 960 OP(get_mac_extf)
 961 {
 962     uint32_t val;
 963     int acc = PARAM2;
 964     val = env->macc[acc] & 0x00ff;
 965     val = (env->macc[acc] >> 32) & 0xff00;
 966     val |= (env->macc[acc + 1] << 16) & 0x00ff0000;
 967     val |= (env->macc[acc + 1] >> 16) & 0xff000000;
 968     set_op(PARAM1, val);
 969     FORCE_RET();
 970 }
 971
 972 OP(get_mac_exti)
 973 {
 974     uint32_t val;
 975     int acc = PARAM2;
 976     val = (env->macc[acc] >> 32) & 0xffff;
 977     val |= (env->macc[acc + 1] >> 16) & 0xffff0000;
 978     set_op(PARAM1, val);
 979     FORCE_RET();
 980 }
 981
 982 OP(set_macf)
 983 {
 984     int acc = PARAM2;
 985     int32_t val = get_op(PARAM1);
 986     env->macc[acc] = ((int64_t)val) << 8;
 987     env->macsr &= ~(MACSR_PAV0 << acc);
 988     FORCE_RET();
 989 }
 990
 991 OP(set_macs)
 992 {
 993     int acc = PARAM2;
 994     int32_t val = get_op(PARAM1);
 995     env->macc[acc] = val;
 996     env->macsr &= ~(MACSR_PAV0 << acc);
 997     FORCE_RET();
 998 }
 999
1000 OP(set_macu)
1001 {
1002     int acc = PARAM2;
1003     uint32_t val = get_op(PARAM1);
1004     env->macc[acc] = val;
1005     env->macsr &= ~(MACSR_PAV0 << acc);
1006     FORCE_RET();
1007 }
1008
1009 OP(set_mac_extf)
1010 {
1011     int acc = PARAM2;
1012     int32_t val = get_op(PARAM1);
1013     int64_t res;
1014     int32_t tmp;
1015     res = env->macc[acc] & 0xffffffff00ull;
1016     tmp = (int16_t)(val & 0xff00);
1017     res |= ((int64_t)tmp) << 32;
1018     res |= val & 0xff;
1019     env->macc[acc] = res;
1020     res = env->macc[acc + 1] & 0xffffffff00ull;
1021     tmp = (val & 0xff000000);
1022     res |= ((int64_t)tmp) << 16;
1023     res |= (val >> 16) & 0xff;
1024     env->macc[acc + 1] = res;
1025 }
1026
1027 OP(set_mac_exts)
1028 {
1029     int acc = PARAM2;
1030     int32_t val = get_op(PARAM1);
1031     int64_t res;
1032     int32_t tmp;
1033     res = (uint32_t)env->macc[acc];
1034     tmp = (int16_t)val;
1035     res |= ((int64_t)tmp) << 32;
1036     env->macc[acc] = res;
1037     res = (uint32_t)env->macc[acc + 1];
1038     tmp = val & 0xffff0000;
1039     res |= (int64_t)tmp << 16;
1040     env->macc[acc + 1] = res;
1041 }
1042
1043 OP(set_mac_extu)
1044 {
1045     int acc = PARAM2;
1046     int32_t val = get_op(PARAM1);
1047     uint64_t res;
1048     res = (uint32_t)env->macc[acc];
1049     res |= ((uint64_t)(val & 0xffff)) << 32;
1050     env->macc[acc] = res;
1051     res = (uint32_t)env->macc[acc + 1];
1052     res |= (uint64_t)(val & 0xffff0000) << 16;
1053     env->macc[acc + 1] = res;
1054 }
1055
1056 OP(set_macsr)
1057 {
1058     m68k_set_macsr(env, get_op(PARAM1));
1059 }