sim/m32c/m32c.opc

   1 /* m32c.opc --- semantics for m32c opcodes.                     -*- mode: c -*-
   2
   3 Copyright (C) 2005-2015 Free Software Foundation, Inc.
   4 Contributed by Red Hat, Inc.
   5
   6 This file is part of the GNU simulators.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 #include "cpu.h"
  26 #include "mem.h"
  27 #include "misc.h"
  28 #include "int.h"
  29
  30 #define AU  __attribute__((unused))
  31
  32 #define tprintf if (trace) printf
  33
  34 static unsigned char
  35 getbyte (void)
  36 {
  37   int tsave = trace;
  38   unsigned char b;
  39
  40   if (trace == 1)
  41     trace = 0;
  42   b = mem_get_pc ();
  43   regs.r_pc ++;
  44   trace = tsave;
  45   return b;
  46 }
  47
  48 #define M32C_ONLY() /* FIXME: add something here */
  49
  50 #define GETBYTE() (op[opi++] = getbyte())
  51
  52 #define UNSUPPORTED() unsupported("unsupported", m32c_opcode_pc)
  53 #define NOTYET() unsupported("unimplemented", m32c_opcode_pc)
  54
  55 static void
  56 unsupported (char *tag, int orig_pc)
  57 {
  58   int i;
  59   printf("%s opcode at %08x\n", tag, orig_pc);
  60   regs.r_pc = orig_pc;
  61   for (i=0; i<2; i++)
  62     {
  63       int b = mem_get_pc();
  64       printf(" %s", bits(b>>4, 4));
  65       printf(" %s", bits(b, 4));
  66       regs.r_pc ++;
  67     }
  68   printf("\n");
  69   regs.r_pc = orig_pc;
  70   for (i=0; i<6; i++)
  71     {
  72       printf(" %02x", mem_get_pc ());
  73       regs.r_pc ++;
  74     }
  75   printf("\n");
  76   exit(1);
  77 }
  78
  79 static int
  80 IMM(int bytes)
  81 {
  82   int rv = 0;
  83   switch (bytes)
  84     {
  85     case 1:
  86       rv = mem_get_qi (get_reg(pc));
  87       break;
  88     case 2:
  89       rv = mem_get_hi (get_reg(pc));
  90       break;
  91     case 3:
  92       rv = mem_get_psi (get_reg(pc));
  93       break;
  94     case 4:
  95       rv = mem_get_si (get_reg(pc));
  96       break;
  97     }
  98   regs.r_pc += bytes;
  99   return rv;
 100 }
 101
 102 #define IMM4() (immm >= 8 ? 7 - immm : immm + 1)
 103
 104 #define NO_PREFIX() PREFIX(0,0,0)
 105
 106 /* Indicate which sorts of prefixes are allowed for the current
 107    opcode.  */
 108 static void
 109 prefix (int src_allowed, int dest_allowed, int index_bytewidth)
 110 {
 111   /* At the moment, we don't do anything with this information.  We
 112      just wanted to get the information entered in some
 113      machine-readable form while we were going through all the
 114      opcodes.  */
 115 }
 116
 117 #define MATH_OP(dc,s,c,op) \
 118 { \
 119   int ma, mb; \
 120   ma = get_src(dc); \
 121   mb = s & b2mask[dc.bytes]; \
 122   ll = (long long)ma op (long long)mb op c; \
 123   tprintf("0x%x " #op " 0x%x " #op " 0x%x = 0x%llx\n", ma, mb, c, ll); \
 124   ma = sign_ext (ma, dc.bytes * 8); \
 125   mb = sign_ext (s, dc.bytes * 8); \
 126   v = ma op mb op c; \
 127   tprintf("%d " #op " %d " #op " %d = %d\n", ma, mb, c, v); \
 128   set_oszc (v, dc.bytes, (1 op 1) ? (ll > b2mask[dc.bytes]) : (ll >= 0)); \
 129   put_dest (dc, v); \
 130 }
 131
 132 #define LOGIC_OP(dc,s,op) \
 133 { \
 134   int ma, mb; \
 135   ma = get_src(dc); \
 136   mb = s & b2mask[dc.bytes]; \
 137   v = ma op mb; \
 138   tprintf("0x%x " #op " 0x%x = 0x%x\n", ma, mb, v); \
 139   set_sz (v, dc.bytes); \
 140   put_dest (dc, v); \
 141 }
 142
 143 #define BIT_OP(dc,bit,expr)                                             \
 144   b = get_bit2 (dc, bitindex == -1 ? bit : bitindex);                   \
 145   v = expr;                                                             \
 146   tprintf ("b=%d, bit=%d, carry=%d, %s = %d\n",                         \
 147            b,  bitindex == -1 ? bit : bitindex, carry, #expr, v);       \
 148   put_bit2 (dc,  bitindex == -1 ? bit : bitindex, v);
 149
 150 #define BIT_OPC(dc,bit,expr)                                            \
 151   b = get_bit2 (dc,  bitindex == -1 ? bit : bitindex);                  \
 152   v = expr;                                                             \
 153   tprintf ("b=%d, bit=%d, carry=%d, %s = %d\n",                         \
 154            b,  bitindex == -1 ? bit : bitindex, carry, #expr, v);       \
 155   set_c (v);
 156
 157 #define carry (FLAG_C ? 1 : 0)
 158
 159 static void
 160 cmp (int d, int s, int bytes)
 161 {
 162   int a, b, f=0;
 163   a = d - s;
 164   b = sign_ext (d, bytes*8) - sign_ext (s, bytes*8);
 165   tprintf ("cmp: %x - %x = %08x, %x - %x = %d\n",
 166            d, s, a,
 167            sign_ext(d,bytes*8), sign_ext(s,bytes*8), b);
 168
 169   if (b == 0)
 170     f |= FLAGBIT_Z;
 171   if (b & b2signbit[bytes])
 172     f |= FLAGBIT_S;
 173   if ((d & b2mask[bytes]) >= (s & b2mask[bytes]))
 174     f |= FLAGBIT_C;
 175   if (b < b2minsigned[bytes] || b > b2maxsigned[bytes])
 176     f |= FLAGBIT_O;
 177
 178   set_flags (FLAGBIT_Z | FLAGBIT_S | FLAGBIT_O | FLAGBIT_C, f);
 179 }
 180
 181 static void
 182 dadd_op (int ddd, int dd, int sss, int ss, int imm, int add, int cy, int w)
 183 {
 184   srcdest sc, dc;
 185   int a, b=0, res;
 186
 187   prefix (0, 0, 0);
 188
 189   if (!imm)
 190     {
 191       sc = decode_src23 (sss, ss, w+1);
 192       b = get_src (sc);
 193     }
 194   dc = decode_dest23 (ddd, dd, w+1);
 195   a = get_src (dc);
 196   if (imm)
 197     b = IMM(w+1);
 198
 199   a = bcd2int(a, w);
 200   b = bcd2int(b, w);
 201
 202   tprintf("decimal: %d %s %d", a, add?"+":"-", b);
 203   if (cy)
 204     tprintf(" c=%d", carry);
 205
 206   if (add)
 207     {
 208       res = a + b;
 209       if (cy)
 210         res += carry;
 211       cy = res > (w ? 9999 : 99);
 212     }
 213   else
 214     {
 215       res = a - b;
 216       if (cy)
 217         res -= (1-carry);
 218       cy = res >= 0;
 219       if (res < 0)
 220         res += w ? 10000 : 100;
 221     }
 222
 223   res = int2bcd (res, w);
 224   tprintf(" = %x\n", res);
 225
 226   set_szc (res, w+1, cy);
 227
 228   put_dest (dc, res);
 229 }
 230 #define DADDV(A,C) dadd_op(ddd, dd, sss, ss, 0, A, C, w)
 231 #define DADDI(A,C) dadd_op(ddd, dd, 0, 0, 1, A, C, w)
 232
 233 static void
 234 div_op (int sss, int ss, int u, int x, int bytes)
 235 {
 236   srcdest sc;
 237   int s, v, a, b;
 238
 239   if (sss == -1)
 240     s = IMM(bytes);
 241   else
 242     {
 243       sc = decode_dest23 (sss, ss, bytes);
 244       s = get_src (sc);
 245     }
 246
 247   v = get_reg (bytes > 1 ? r2r0 : r0);
 248
 249   if (!u)
 250     {
 251       /* FIXME? do we sign extend a0/a1 to .L?  Docs say zero extend.  */
 252       s = sign_ext (s, bytes*8);
 253       v = sign_ext (v, bytes*8);
 254     }
 255
 256   if (s == 0)
 257     {
 258       set_flags (FLAGBIT_O, FLAGBIT_O);
 259       return;
 260     }
 261
 262   if (u)
 263     {
 264       a = (unsigned int)v / (unsigned int)s;
 265       b = (unsigned int)v % (unsigned int)s;
 266     }
 267   else
 268     {
 269       a = v / s;
 270       b = v % s;
 271     }
 272   if (x)
 273     {
 274       if ((s > 0 && b < 0)
 275           || (s < 0 && b > 0))
 276         {
 277           a --;
 278           b += s;
 279         }
 280     }
 281   tprintf ("%d / %d = %d rem %d\n", v, s, a, b);
 282   if ((!u && (a > b2maxsigned[bytes]
 283               || a < b2minsigned[bytes]))
 284       || (u && (a > b2mask[bytes])))
 285     set_flags (FLAGBIT_O, FLAGBIT_O);
 286   else
 287     set_flags (FLAGBIT_O, 0);
 288
 289   switch (bytes)
 290     {
 291     case 1:
 292       put_reg (r0l, a);
 293       put_reg (r0h, b);
 294       break;
 295     case 2:
 296       put_reg (r0, a);
 297       put_reg (r2, b);
 298       break;
 299     case 4:
 300       put_reg (r2r0, a);
 301       break;
 302     }
 303 }
 304
 305 static void
 306 index_op (int sss, int ss, int do_s, int do_d, int scale, int w)
 307 {
 308   srcdest sc = decode_src23 (sss, ss, w+1);
 309   int v = get_src (sc) * scale;
 310   tprintf("%d = %d * %d, %d %d\n", v, get_src(sc), scale, do_s, do_d);
 311   decode_index (do_s * v, do_d * v);
 312 }
 313 #define INDEXOP(scale,do_s,do_d)                                \
 314   index_op (sss, ss, do_s, do_d, scale, w); goto next_opcode
 315
 316 static void
 317 rot_op (srcdest sd, int rotc, int count)
 318 {
 319   int mask = (sd.bytes == 2) ? 0xffff : 0xff;
 320   int msb = (sd.bytes == 2) ? 0x8000 : 0x80;
 321   int v = get_src (sd);
 322   int c = carry, ct;
 323
 324   tprintf("%s %x by %d\n", rotc ? "rotc" : "rot", v, count);
 325   tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
 326   while (count > 0)
 327     {
 328       ct = (v & msb) ? 1 : 0;
 329       v <<= 1;
 330       v |= rotc ? c : ct;
 331       v &= mask;
 332       c = ct;
 333       tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
 334       count --;
 335     }
 336   while (count < 0)
 337     {
 338       ct = v & 1;
 339       v >>= 1;
 340       v |= (rotc ? c : ct) * msb;
 341       c = ct;
 342       tprintf (": %s %d\n", bits(v, 8*sd.bytes), c);
 343       count ++;
 344     }
 345   put_dest (sd, v);
 346   set_szc (v, sd.bytes, c);
 347 }
 348
 349 static void
 350 shift_op (srcdest sd, int arith, int count, int setc)
 351 {
 352   int mask = (sd.bytes == 2) ? 0xffff : 0xff;
 353   int msb = (sd.bytes == 2) ? 0x8000 : 0x80;
 354   int v = get_src (sd);
 355   int c = 0;
 356   int o = 0;
 357
 358   if (sd.bytes == 4)
 359     {
 360       mask = 0xffffffffU;
 361       msb = 0x80000000U;
 362     }
 363
 364   tprintf("%s %x by %d\n", arith ? "sha" : "shl", v, count);
 365   tprintf (": %s %d %d\n", bits(v, 8*sd.bytes), c, o);
 366   while (count > 0)
 367     {
 368       c = (v & msb) ? 1 : 0;
 369       v <<= 1;
 370       v &= mask;
 371       if (c != ((v & msb) ? 1 : 0))
 372         o = 1;
 373       tprintf (": %s %d %d\n", bits(v, 8*sd.bytes), c, o);
 374       count --;
 375     }
 376   while (count < 0)
 377     {
 378       c = v & 1;
 379       if (arith)
 380         v = (v & msb) | (v >> 1);
 381       else
 382         v = (v >> 1) & (msb - 1);
 383       tprintf (": %s %d %d\n", bits(v, 8*sd.bytes), c, o);
 384       count ++;
 385     }
 386   put_dest (sd, v);
 387   set_sz (v, sd.bytes);
 388   if (setc)
 389     set_c (c);
 390   set_flags (FLAGBIT_O, o ? FLAGBIT_O : 0);
 391 }
 392
 393 static int pcs[16];
 394 static int ipcs = 0;
 395
 396 int
 397 decode_m32c (void)
 398 {
 399   unsigned char op[40];
 400   int opi;
 401   int v, a, b;
 402   long long ll;
 403   srcdest sc, dc;
 404   int imm;
 405   int bitindex = -1;
 406   int t0, t1=0, t2, t3=0;
 407   int ta0, ta1, dif;
 408
 409   step_result = M32C_MAKE_STEPPED ();
 410
 411   decode_indirect (0, 0);
 412   decode_index (0, 0);
 413
 414 next_opcode:
 415   opi = 0;
 416   m32c_opcode_pc = get_reg (pc);
 417
 418   tprintf("trace: decode pc = %06x\n", m32c_opcode_pc);
 419
 420   if (m32c_opcode_pc == 0)
 421     {
 422       int i;
 423       printf("Abort: PC is zero, here from:\n");
 424       for (i=0; i<4; i++)
 425         printf("  0x%06x\n", pcs[(ipcs+15-i)%16]);
 426       return M32C_MAKE_HIT_BREAK ();
 427     }
 428   pcs[ipcs++] = m32c_opcode_pc;
 429   ipcs %= 16;
 430
 431   /** VARY sss 000 001 010 011 100 */
 432   /** VARY ddd 000 001 010 011 100 */
 433
 434   /** 0000 1001                         indirect dest */
 435
 436   decode_indirect (0, 1);
 437   goto next_opcode;
 438
 439   /** 0100 0001                         indirect src */
 440
 441   decode_indirect (1, 0);
 442   goto next_opcode;
 443
 444   /** 0100 1001                         indirect src and dest */
 445
 446   decode_indirect (1, 1);
 447   goto next_opcode;
 448
 449   /** 1010 ddd w dd01 1111              ABS.size dest */
 450
 451   prefix (0, 1, 0);
 452   dc = decode_dest23 (ddd, dd, w+1);
 453   v = sign_ext (get_src (dc), w?16:8);
 454   a = v<0 ? -v : v;
 455   tprintf("abs(%d) = %d\n", v, a);
 456   set_osz(a, w+1);
 457   put_dest (dc, a);
 458
 459   /** 0000 0001 1000 ddd w dd10 1110    ADC.size #IMM,dest */
 460
 461   prefix (0, 0, 0);
 462   dc = decode_dest23 (ddd, dd, w+1);
 463   imm = IMM (w+1);
 464   MATH_OP (dc, imm, carry, +);
 465
 466   /** 0000 0001 1sss ddd w dd ss 0100   ADC.size src,dest */
 467
 468   prefix (0, 0, 0);
 469   sc = decode_src23 (sss, ss, w+1);
 470   dc = decode_dest23 (ddd, dd, w+1);
 471   b = get_src (sc);
 472   MATH_OP (dc, b, carry, +);
 473
 474   /** 1011 ddd w dd01 1110              ADCF.size dest */
 475
 476   prefix (0, 1, 0);
 477   dc = decode_dest23 (ddd, dd, w+1);
 478   MATH_OP (dc, 0, carry, +);
 479
 480   /** 1000 ddd w dd10 1110              ADD.size:G #IMM,dest */
 481
 482   prefix (0, 1, 0);
 483   dc = decode_dest23(ddd, dd, w+1);
 484   imm = IMM(w+1);
 485   MATH_OP (dc, imm, 0, +);
 486
 487   /** 1000 ddd0 dd11 0001               ADD.L:G #IMM,dest */
 488
 489   prefix (0, 1, 0);
 490   dc = decode_dest23(ddd, dd, 4);
 491   imm = IMM(4);
 492   MATH_OP (dc, imm, 0, +);
 493
 494   /** 111L ddd w dd11 immm              ADD.size:Q #IMM,dest */
 495
 496   prefix (0, 1, 0);
 497   dc = decode_dest23(ddd, dd, L ? 4 : (w+1));
 498   imm = sign_ext (immm, 4);
 499   MATH_OP (dc, imm, 0, +);
 500
 501   /** 00dd 011w                         ADD.size:S #IMM,dest */
 502
 503   prefix (0, 1, 0);
 504   dc = decode_dest2(dd, w+1);
 505   imm = IMM (w+1);
 506   MATH_OP (dc, imm, 0, +);
 507
 508   /** 10i0 110d                         ADD.L:S #IMM,A0/A1 */
 509
 510   prefix (0, 0, 0);
 511   dc = reg_sd (d ? a1 : a0);
 512   imm = i ? 2 : 1;
 513   MATH_OP (dc, imm, 0, +);
 514
 515   /** 1sss ddd w dd ss 1000             ADD.size:G src,dest */
 516
 517   prefix (1, 1, 0);
 518   sc = decode_src23(sss, ss, w+1);
 519   dc = decode_dest23(ddd, dd, w+1);
 520   b = get_src (sc);
 521   MATH_OP (dc, b, 0, +);
 522
 523   /** 1sss ddd1 dd ss 0010              ADD.L:G src,dest */
 524
 525   prefix (1, 1, 0);
 526   sc = decode_src23(sss, ss, 4);
 527   dc = decode_dest23(ddd, dd, 4);
 528   b = get_src (sc);
 529   MATH_OP (dc, b, 0, +);
 530
 531   /** 1011 0110 0001 0011               ADD.L:G #IMM16,SP */
 532
 533   prefix (0, 0, 0);
 534   dc = reg_sd (sp);
 535   b = sign_ext (IMM(2), 16);
 536   MATH_OP (dc, b, 0, +);
 537
 538   /** 01ii 001i                         ADD.L:Q #IMM3,SP */
 539
 540   prefix (0, 0, 0);
 541   dc = reg_sd (sp);
 542   b = ii * 2 + i + 1;
 543   MATH_OP (dc, b, 0, +);
 544
 545   /** 1011 0110 0000 0011               ADD.L:S #IMM8,SP */
 546
 547   prefix (0, 0, 0);
 548   dc = reg_sd (sp);
 549   b = sign_ext (IMM(1), 8);
 550   MATH_OP (dc, b, 0, +);
 551
 552   /** 1000 ddd0 dd01 0001               ADDX #IMM,dest */
 553
 554   prefix (0, 1, 0);
 555   dc = decode_dest23(ddd, dd, 4);
 556   imm = sign_ext (IMM(1), 8);
 557   MATH_OP (dc, imm, 0, +);
 558
 559   /** 1sss ddd0 dd ss 0010              ADDX src,dest */
 560
 561   prefix (1, 1, 0);
 562   sc = decode_src23(sss, ss, 1);
 563   dc = decode_dest23(ddd, dd, 4);
 564   b = sign_ext (get_src (sc), 8);
 565   MATH_OP (dc, b, 0, +);
 566
 567   /** 1111 ddd w dd01 immm              ADJNZ.size #IMM,dest,label */
 568
 569   prefix (0, 0, 0);
 570   dc = decode_dest23 (ddd, dd, w+1);
 571   v = get_src (dc);
 572   imm = sign_ext(immm, 4);
 573   tprintf("%d + %d = %d\n", v, imm, v+imm);
 574   v += imm;
 575   put_dest (dc, v);
 576   a = sign_ext (IMM(1), 8);
 577   if ((v & (w ? 0xffff : 0xff)) != 0)
 578     {
 579       tprintf("jmp: %x + 2 + %d = ", get_reg (pc), a);
 580       put_reg (pc, m32c_opcode_pc + 2 + a);
 581       tprintf("%x\n", get_reg (pc));
 582     }
 583
 584   /** 1000 ddd w dd11 1111              AND.size:G #IMM,dest */
 585
 586   prefix (0, 1, 0);
 587   dc = decode_dest23(ddd, dd, w+1);
 588   imm = IMM(w+1);
 589   LOGIC_OP (dc, imm, &);
 590
 591   /** 01dd 110w                         AND.size:S #IMM,dest */
 592
 593   prefix (0, 1, 0);
 594   dc = decode_dest2(dd, w+1);
 595   imm = IMM (w+1);
 596   LOGIC_OP (dc, imm, &);
 597
 598   /** 1sss ddd w dd ss 1101             AND.size:G src,dest */
 599
 600   prefix (1, 1, 0);
 601   sc = decode_src23(sss, ss, w+1);
 602   dc = decode_dest23(ddd, dd, w+1);
 603   b = get_src (sc);
 604   LOGIC_OP (dc, b, &);
 605
 606   /** 0000 0001 1101 sss0 ss00 1bit     BAND src */
 607
 608   sc = decode_src23 (sss, ss, 1);
 609   BIT_OPC (sc, bit, b & carry);
 610
 611   /** 1101 ddd0 dd11 0bit               BCLR dest */
 612
 613   dc = decode_dest23 (ddd, dd, 1);
 614   BIT_OP (dc, bit, 0);
 615
 616   /** 1100 ddd w dd10 1110              BITINDEX.size src */
 617
 618   prefix (0, 0, 0);
 619   dc = decode_dest23 (ddd, dd, w+1);
 620   bitindex = get_src (dc);
 621   tprintf ("bitindex set to %d\n", bitindex);
 622   goto next_opcode;
 623
 624   /** 1101 ddd0 dd01 0bit               BMcnd dest */
 625
 626   prefix (0, 0, 0);
 627   dc = decode_dest23 (ddd, dd, 1);
 628   if (condition_true (IMM (1)))
 629     put_bit2 (dc, bit, 1);
 630   else
 631     put_bit2 (dc, bit, 0);
 632
 633   /** 1101 1001 0c10 1cnd               BMcnd C */
 634
 635   prefix (0, 0, 0);
 636   if (condition_true (c * 8 + cnd))
 637     set_c (1);
 638   else
 639     set_c (0);
 640
 641   /** 0000 0001 1101 sss0 ss01 1bit     BNAND src */
 642
 643   prefix (0, 0, 0);
 644   sc = decode_src23 (sss, ss, 1);
 645   BIT_OPC (sc, bit, (!b) & carry);
 646
 647   /** 0000 0001 1101 sss0 ss11 0bit     BNOR src */
 648
 649   prefix (0, 0, 0);
 650   sc = decode_src23 (sss, ss, 1);
 651   BIT_OPC (sc, bit, (!b) | carry);
 652
 653   /** 1101 ddd0 dd01 1bit               BNOT dest */
 654
 655   prefix (0, 0, 0);
 656   dc = decode_dest23 (ddd, dd, 1);
 657   BIT_OP (dc, bit, !b);
 658
 659   /** 0000 0001 1101 sss0 ss00 0bit     BNTST src */
 660
 661   prefix (0, 0, 0);
 662   sc = decode_dest23 (sss, ss, 1);
 663   b = get_bit2 (sc, bit);
 664   set_zc (!b, !b);
 665
 666   /** 0000 0001 1101 sss0 ss11 1bit     BNXOR src */
 667
 668   prefix (0, 0, 0);
 669   sc = decode_src23 (sss, ss, 1);
 670   BIT_OPC (sc, bit, !b ^ carry);
 671
 672   /** 0000 0001 1101 sss0 ss10 0bit     BOR src */
 673
 674   prefix (0, 0, 0);
 675   sc = decode_src23 (sss, ss, 1);
 676   BIT_OPC (sc, bit, b | carry);
 677
 678   /** 0000 0000                         BRK */
 679
 680   /* We report the break to our caller with the PC still pointing at the
 681      breakpoint instruction.  */
 682   put_reg (pc, m32c_opcode_pc);
 683   if (verbose)
 684     printf("[break]\n");
 685   if (in_gdb || (regs.r_intbl == 0 && regs.r_intbh == 0))
 686     return M32C_MAKE_HIT_BREAK ();
 687   if (mem_get_qi (0xFFFFE7) == 0xff)
 688     trigger_based_interrupt (0);
 689   else
 690     trigger_fixed_interrupt (0xFFFFE4);
 691
 692   /** 1111 1110                         GBRK */
 693
 694   /* This alternate break, which is not part of the chip's opcode set,
 695    is here in case you need to debug a program that itself uses the
 696    chip's BRK opcode.  You'll need to modify your copy of GDB to use
 697    this opcode instead of the real BRK.  */
 698
 699   /* GDB Break. */
 700   /* We report the break to our caller with the PC still pointing at the
 701      breakpoint instruction.  */
 702   put_reg (pc, m32c_opcode_pc);
 703   if (verbose)
 704     printf("[gdb break]\n");
 705   return M32C_MAKE_HIT_BREAK ();
 706
 707   /** 0000 1000                         BRK2 */
 708
 709   if (verbose)
 710     printf("[break2]\n");
 711   if (in_gdb)
 712     return M32C_MAKE_HIT_BREAK ();
 713   if (mem_get_qi (0xFFFFE7) == 0xff)
 714     trigger_based_interrupt (0);
 715   else
 716     trigger_fixed_interrupt (0xFFFFE4);
 717
 718   /** 1101 ddd0 dd11 1bit               BSET dest */
 719
 720   dc = decode_dest23 (ddd, dd, 1);
 721   BIT_OP (dc, bit, 1);
 722
 723   /** 1101 sss0 ss00 0bit               BTST:G src */
 724
 725   prefix (0, 0, 0);
 726   sc = decode_src23 (sss, ss, 1);
 727   b = get_bit2 (sc, bit);
 728   set_zc (!b, b);
 729
 730   /** 00bb 101b                         BTST:S src */
 731
 732   sc = decode_src23 (3, 3, 1); /* bit,base:19 */
 733   b = get_bit2 (sc, bb*2 + b);
 734   set_zc (!b, b);
 735
 736   /** 1101 ddd0 dd10 0bit               BTSTC dest */
 737
 738   prefix (0, 0, 0);
 739   sc = decode_dest23 (ddd, dd, 1);
 740   b = get_bit2 (sc, bit);
 741   set_zc (!b, b);
 742   put_bit2 (sc, bit, 0);
 743
 744   /** 1101 ddd0 dd10 1bit               BTSTS dest */
 745
 746   prefix (0, 0, 0);
 747   sc = decode_dest23 (ddd, dd, 1);
 748   b = get_bit2 (sc, bit);
 749   set_zc (!b, b);
 750   put_bit2 (sc, bit, 1);
 751
 752   /** 0000 0001 1101 sss0 ss10 1bit     BXOR src */
 753
 754   prefix (0, 0, 0);
 755   sc = decode_src23 (sss, ss, 1);
 756   BIT_OPC (sc, bit, b ^ carry);
 757
 758   /** 0000 0001 1000 ddd w dd11 1110    CLIP.size #IMM1,#IMM2,dest */
 759
 760   prefix (0, 0, 0);
 761   dc = decode_dest23 (ddd, dd, w+1);
 762   a = sign_ext (IMM(w+1), w*8+8);
 763   b = sign_ext (IMM(w+1), w*8+8);
 764   v = sign_ext (get_src (dc), w*8+8);
 765   tprintf("clip %d <= %d <= %d : ", a, v, b);
 766   if (a > v)
 767     v = a;
 768   if (v > b)
 769     v = b;
 770   tprintf("%d\n", v);
 771   put_dest (dc, v);
 772
 773   /** 1001 ddd w dd10 1110              CMP.size:G #IMM,dest */
 774
 775   prefix (0, 1, 0);
 776   dc = decode_dest23 (ddd, dd, w+1);
 777   v = get_src (dc);
 778   imm = IMM(w+1);
 779   cmp (v, imm, w+1);
 780
 781   /** 1010 ddd0 dd11 0001               CMP.L:G #IMM32,dest */
 782
 783   prefix (0, 1, 0);
 784   dc = decode_dest23 (ddd, dd, 4);
 785   v = get_src (dc);
 786   imm = IMM(4);
 787   cmp (v, imm, 4);
 788
 789   /** 1110 ddd w dd01 immm              CMP.size:Q #IMM,dest */
 790
 791   prefix (0, 1, 0);
 792   dc = decode_dest23 (ddd, dd, w+1);
 793   v = get_src (dc);
 794   immm = sign_ext (immm, 4);
 795   cmp (v, immm, w+1);
 796
 797   /** 01dd 011w                         CMP.size:S #IMM,dest */
 798
 799   prefix (0, 1, 0);
 800   dc = decode_dest2 (dd, w+1);
 801   v = get_src (dc);
 802   imm = sign_ext (IMM(w+1),w*8+8);
 803   cmp (v, imm, w+1);
 804
 805   /** 1sss ddd w dd ss 0110             CMP.size:G src,dest */
 806
 807   prefix (1, 1, 0);
 808   sc = decode_src23 (sss, ss, w+1);
 809   dc = decode_dest23 (ddd, dd, w+1);
 810   a = get_src (dc);
 811   b = get_src (sc);
 812   cmp (a, b, w+1);
 813
 814   /** 1sss ddd1 dd ss 0001              CMP.L:G src,dest */
 815
 816   prefix (1, 1, 0);
 817   sc = decode_src23 (sss, ss, 4);
 818   dc = decode_dest23 (ddd, dd, 4);
 819   a = get_src (dc);
 820   b = get_src (sc);
 821   cmp (a, b, 4);
 822
 823   /** 01dd 000w                         CMP.size:S src,R0/R0L */
 824
 825   prefix (0, 1, 0);
 826   dc = decode_dest2 (dd, w+1);
 827   a = get_reg (w ? r0 : r0l);
 828   b = get_src (dc);
 829   cmp (a, b, w+1);
 830
 831   /** 1010 ddd0 dd01 0001               CMPX #IMM,dest */
 832
 833   prefix (0, 1, 0);
 834   dc = decode_dest23 (ddd, dd, 4);
 835   v = get_src (dc);
 836   imm = sign_ext (IMM(1), 8);
 837   cmp (v, imm, 4);
 838
 839   /** 0000 0001 1000 ddd w dd00 1110    DADC.size #IMM,dest */
 840
 841   DADDI(1,1);
 842
 843   /** 0000 0001 1sss ddd w dd ss 1000   DADC.size src,dest */
 844
 845   DADDV(1,1);
 846
 847   /** 0000 0001 1000 ddd w dd01 1110    DADD.size #IMM,dest */
 848
 849   DADDI(1,0);
 850
 851   /** 0000 0001 1sss ddd w dd ss 0000   DADD.size src,dest */
 852
 853   DADDV(1,0);
 854
 855   /** 1011 ddd w dd00 1110              DEC.size dest */
 856
 857   prefix (0, 1, 0);
 858   dc = decode_dest23 (ddd, dd, w+1);
 859   a = get_src (dc);
 860   v = a-1;
 861   tprintf ("%x -- = %x\n", a, v);
 862   set_sz (v, w+1);
 863   put_dest (dc, v);
 864
 865   /** 1011 0000 010w 0011               DIV.size #IMM */
 866
 867   prefix (0, 0, 0);
 868   div_op (-1, 0, 0, 0, w+1);
 869
 870   /** 1000 sss w ss01 1110              DIV.size src */
 871
 872   prefix (0, 1, 0);
 873   div_op (sss, ss, 0, 0, w+1);
 874
 875   /** 0000 0001 1010 sss1 ss01 1111     DIV.L src */
 876
 877   M32C_ONLY();
 878   prefix (0, 0, 0);
 879   div_op (sss, ss, 0, 0, 4);
 880
 881   /** 1011 0000 000w 0011               DIVU.size #IMM */
 882
 883   prefix (0, 0, 0);
 884   div_op (-1, 0, 1, 0, w+1);
 885
 886   /** 1000 sss w ss00 1110              DIVU.size src */
 887
 888   prefix (0, 1, 0);
 889   div_op (sss, ss, 1, 0, w+1);
 890
 891   /** 0000 0001 1010 sss1 ss00 1111     DIVU.L src */
 892
 893   M32C_ONLY();
 894   prefix (0, 0, 0);
 895   div_op (sss, ss, 1, 0, 4);
 896
 897   /** 1011 0010 010w 0011               DIVX.size #IMM */
 898
 899   prefix (0, 0, 0);
 900   div_op (-1, 0, 0, 1, w+1);
 901
 902   /** 1001 sss w ss01 1110              DIVX.size src */
 903
 904   prefix (0, 1, 0);
 905   div_op (sss, ss, 0, 1, w+1);
 906
 907   /** 0000 0001 1010 sss1 ss10 1111     DIVX.L src */
 908
 909   M32C_ONLY();
 910   prefix (0, 0, 0);
 911   div_op (sss, ss, 0, 1, 4);
 912
 913   /** 0000 0001 1001 ddd w dd00 1110    DSBB.size #IMM,dest */
 914
 915   DADDI(0,1);
 916
 917   /** 0000 0001 1sss ddd w dd ss 1010   DSBB.size src,dest */
 918
 919   DADDV(0,1);
 920
 921   /** 0000 0001 1001 ddd w dd01 1110    DSUB.size #IMM,dest */
 922
 923   DADDI(0,0);
 924
 925   /** 0000 0001 1sss ddd w dd ss 0010   DSUB.size src,dest */
 926
 927   DADDV(0,0);
 928
 929   /** 1110 1100                         ENTER #IMM */
 930
 931   imm = IMM(1);
 932   put_reg (sp, get_reg (sp) - 4);
 933   mem_put_si (get_reg (sp), get_reg (fb));
 934   put_reg (fb, get_reg (sp));
 935   put_reg (sp, get_reg (sp) - imm);
 936
 937   /** 1111 1100                         EXITD */
 938
 939   put_reg (sp, get_reg (fb));
 940   put_reg (fb, mem_get_si (get_reg (sp)));
 941   put_reg (sp, get_reg (sp) + 4);
 942   put_reg (pc, mem_get_si (get_reg (sp)));
 943   put_reg (sp, get_reg (sp) + 4);
 944
 945   /** 1100 ddd w dd01 1110              EXTS.size dest */
 946
 947   prefix (0, 0, 0);
 948   dc = decode_dest23 (ddd, dd, w+1);
 949   v = sign_ext (get_src (dc), (w+1)*8);
 950   dc = widen_sd (dc);
 951   put_dest (dc, v);
 952   set_sz (v, (w+1)*2);
 953
 954   /** 0000 0001 1sss ddd0 dd ss 0111    EXTS.B src,dest */
 955
 956   prefix (0, 0, 0);
 957   sc = decode_src23 (sss, ss, 1);
 958   dc = decode_dest23 (ddd, dd, 2);
 959   v = sign_ext (get_src (sc), 8);
 960   put_dest (dc, v);
 961   set_sz (v, 16);
 962
 963   /** 0000 0001 1sss ddd0 dd ss 1011    EXTZ src,dest */
 964
 965   prefix (0, 0, 0);
 966   sc = decode_src23 (sss, ss, 1);
 967   dc = decode_dest23 (ddd, dd, 2);
 968   v = get_src (sc);
 969   put_dest (dc, v);
 970   set_sz (v, 16);
 971
 972   /** 1101 0011 1110 1dst               FCLR dest */
 973
 974   set_flags (1 << dst, 0);
 975
 976   /** 1001 1111                         FREIT */
 977
 978   NOTYET();
 979
 980   /** 1101 0001 1110 1dst               FSET dest */
 981
 982   set_flags (1 << dst, 1 << dst);
 983
 984   /** 1010 ddd w dd00 1110              INC.size dest */
 985
 986   prefix (0, 1, 0);
 987   dc = decode_dest23 (ddd, dd, w+1);
 988   a = get_src (dc);
 989   v = a+1;
 990   tprintf ("%x ++ = %x\n", a, v);
 991   set_sz (v, w+1);
 992   put_dest (dc, v);
 993
 994   /** 1000 sss0 ss0w 0011               INDEXB.size src */
 995   INDEXOP(1, 1, 1);
 996   /** 1010 sss0 ss0w 0011               INDEXBD.size src */
 997   INDEXOP(1, 0, 1);
 998   /** 1100 sss0 ss0w 0011               INDEXBS.size src */
 999   INDEXOP(1, 1, 0);
1000   /** 1001 sss0 ss1w 0011               INDEXL.size src */
1001   INDEXOP(4, 1, 1);
1002   /** 1011 sss0 ss1w 0011               INDEXLD.size src */
1003   INDEXOP(4, 0, 1);
1004   /** 1001 sss0 ss0w 0011               INDEXLS.size src */
1005   INDEXOP(4, 1, 0);
1006   /** 1000 sss0 ss1w 0011               INDEXW.size src */
1007   INDEXOP(2, 1, 1);
1008   /** 1010 sss0 ss1w 0011               INDEXWD.size src */
1009   INDEXOP(2, 0, 1);
1010   /** 1100 sss0 ss1w 0011               INDEXWS.size src */
1011   INDEXOP(2, 1, 0);
1012
1013   /** 1011 1110 vector00                        INT #IMM */
1014
1015   prefix (0, 0, 0);
1016   trigger_based_interrupt (vector);
1017
1018   /** 1011 1111                         INTO */
1019
1020   prefix (0, 0, 0);
1021   if (FLAG_O)
1022     trigger_fixed_interrupt (0xffffe0);
1023
1024   /** 1ccc 101c                         Jcnd label */
1025
1026   prefix (0, 0, 0);
1027   v = sign_ext (IMM(1), 8);
1028   if (condition_true (ccc*2+c))
1029     put_reg (pc, m32c_opcode_pc + 1 + v);
1030
1031   /** 01dd 101d                         JMP.S label */
1032
1033   prefix (0, 0, 0);
1034   put_reg (pc, m32c_opcode_pc + (dd*2+d) + 2);
1035
1036   /** 1011 1011                         JMP.B label */
1037
1038   prefix (0, 0, 0);
1039   imm = sign_ext (IMM(1), 8);
1040   if (imm == -1)
1041     {
1042       if (verbose)
1043         printf("[jmp-to-self detected as exit]\n");
1044       return M32C_MAKE_HIT_BREAK ();
1045     }
1046   put_reg (pc, m32c_opcode_pc + 1 + imm);
1047
1048   /** 1100 1110                         JMP.W label */
1049
1050   prefix (0, 0, 0);
1051   imm = sign_ext (IMM(2), 16);
1052   put_reg (pc, m32c_opcode_pc + 1 + imm);
1053
1054   /** 1100 1100                         JMP.A label */
1055
1056   prefix (0, 0, 0);
1057   imm = IMM(3);
1058   put_reg (pc, imm);
1059
1060   /** 1100 sss1 ss00 1111               JMPI.W src */
1061
1062   prefix (0, 0, 0);
1063   sc = decode_src23 (sss, ss, 2);
1064   a = get_src (sc);
1065   a = sign_ext (a, 16);
1066   put_reg (pc, m32c_opcode_pc + a);
1067
1068   /** 1000 sss0 ss00 0001               JMPI.A src */
1069
1070   prefix (0, 0, 0);
1071   sc = decode_src23 (sss, ss, 3);
1072   a = get_src (sc);
1073   put_reg (pc, a);
1074
1075   /** 1101 1100                         JMPS #IMM8 */
1076
1077   prefix (0, 0, 0);
1078   imm = IMM(1);
1079   a = 0xff0000 + mem_get_hi (0xfffe00 - imm * 2);
1080   put_reg (pc, a);
1081
1082   /** 1100 1111                         JSR.W label */
1083
1084   prefix (0, 0, 0);
1085   imm = sign_ext (IMM(2), 16);
1086   put_reg (sp, get_reg (sp) - 4);
1087   mem_put_si (get_reg (sp), get_reg (pc));
1088   put_reg (pc, m32c_opcode_pc + imm + 1);
1089
1090   /** 1100 1101                         JSR.A label */
1091
1092   prefix (0, 0, 0);
1093   imm = IMM(3);
1094   put_reg (sp, get_reg (sp) - 4);
1095   mem_put_si (get_reg (sp), get_reg (pc));
1096   put_reg (pc, imm);
1097
1098   /** 1100 sss1 ss01 1111               JSRI.W src */
1099
1100   prefix (0, 0, 0);
1101   sc = decode_src23 (sss, ss, 2);
1102   a = get_src (sc);
1103   a = sign_ext (a, 16);
1104   put_reg (sp, get_reg (sp) - 4);
1105   mem_put_si (get_reg (sp), get_reg (pc));
1106   put_reg (pc, m32c_opcode_pc + a);
1107
1108   /** 1001 sss0 ss00 0001               JSRI.A src */
1109
1110   prefix (0, 0, 0);
1111   sc = decode_src23 (sss, ss, 3);
1112   a = get_src (sc);
1113   put_reg (sp, get_reg (sp) - 4);
1114   mem_put_si (get_reg (sp), get_reg (pc));
1115   put_reg (pc, a);
1116
1117   /** 1101 1101                         JSRS #IMM8 */
1118
1119   prefix (0, 0, 0);
1120   imm = IMM(1);
1121   a = 0xff0000 + mem_get_hi (0xfffe00 - imm * 2);
1122   put_reg (sp, get_reg (sp) - 4);
1123   mem_put_si (get_reg (sp), get_reg (pc));
1124   put_reg (pc, a);
1125
1126   /** 1101 0101 1010 1dst               LDC #IMM16,dest */
1127
1128   imm = IMM(2);
1129   dc = decode_cr_b (dst, CR_B_DCT0);
1130   put_dest (dc, imm);
1131
1132   /** 1101 0101 0010 1dst               LDC #IMM24,dest */
1133
1134   imm = IMM(3);
1135   dc = decode_cr_b (dst, CR_B_INTB);
1136   put_dest (dc, imm);
1137
1138   /** 1101 0101 0110 1dst               LDC #IMM24,dest */
1139
1140   imm = IMM(3);
1141   dc = decode_cr_b (dst, CR_B_DMA0);
1142   put_dest (dc, imm);
1143
1144   /** 0000 0001 1101 sss1 ss00 1dst     LDC src,dest */
1145
1146   prefix (0, 0, 0);
1147   sc = decode_src23 (sss, ss, 2);
1148   dc = decode_cr_b (dst, CR_B_DCT0);
1149   a = get_src (sc);
1150   put_dest (dc, a);
1151
1152   /** 1101 sss1 ss00 0dst               LDC src,dest */
1153
1154   prefix (0, 0, 0);
1155   sc = decode_src23 (sss, ss, 3);
1156   dc = decode_cr_b (dst, CR_B_INTB);
1157   a = get_src (sc);
1158   put_dest (dc, a);
1159
1160   /** 0000 0001 1101 sss1 ss00 0dst     LDC src,dest */
1161
1162   prefix (0, 0, 0);
1163   sc = decode_src23 (sss, ss, 3);
1164   dc = decode_cr_b (dst, CR_B_DMA0);
1165   a = get_src (sc);
1166   put_dest (dc, a);
1167
1168   /** 1011 0110 1100 0011               LDCTX */
1169
1170   NOTYET();
1171
1172   /** 1101 0101 1110 1imm               LDIPL #IMM */
1173
1174   set_flags (0x7000, imm*0x1000);
1175
1176   /** 0000 0001 1000 ddd w dd11 1111    MAX.size #IMM,dest */
1177
1178   prefix (0, 0, 0);
1179   w++;
1180   dc = decode_dest23 (ddd, dd, w);
1181   imm = sign_ext (IMM(w), w*8);
1182   a = sign_ext (get_src (dc), w*8);
1183   tprintf ("max %d %d\n", imm, a);
1184   if (imm > a)
1185     put_dest (dc, imm);
1186
1187   /** 0000 0001 1sss ddd w dd ss 1101   MAX.size src,dest */
1188
1189   prefix (0, 0, 0);
1190   w++;
1191   sc = decode_src23 (sss, ss, w);
1192   dc = decode_dest23 (ddd, dd, w);
1193   b = sign_ext (get_src (sc), w*8);
1194   a = sign_ext (get_src (dc), w*8);
1195   tprintf ("max %d %d\n", b, a);
1196   if (b > a)
1197     put_dest (dc, b);
1198
1199   /** 0000 0001 1000 ddd w dd10 1111    MIN.size #IMM,dest */
1200
1201   prefix (0, 0, 0);
1202   w++;
1203   dc = decode_dest23 (ddd, dd, w);
1204   imm = sign_ext (IMM(w), w*8);
1205   a = sign_ext (get_src (dc), w*8);
1206   tprintf ("min %d %d\n", imm, a);
1207   if (imm < a)
1208     put_dest (dc, imm);
1209
1210   /** 0000 0001 1sss ddd w dd ss 1100   MIN.size src,dest */
1211
1212   prefix (0, 0, 0);
1213   w++;
1214   sc = decode_src23 (sss, ss, w);
1215   dc = decode_dest23 (ddd, dd, w);
1216   b = sign_ext (get_src (sc), w*8);
1217   a = sign_ext (get_src (dc), w*8);
1218   tprintf ("min %d %d\n", b, a);
1219   if (b < a)
1220     put_dest (dc, b);
1221
1222   /** 1001 ddd w dd10 1111              MOV.size:G #IMM,dest */
1223
1224   dc = decode_dest23 (ddd, dd, w+1);
1225   imm = IMM(w+1);
1226   v = imm;
1227   tprintf("%x = %x\n", v, v);
1228   set_sz(v, w+1);
1229   put_dest (dc, v);
1230
1231   /** 1011 ddd0 dd11 0001               MOV.L:G #IMM,dest */
1232
1233   dc = decode_dest23 (ddd, dd, 4);
1234   imm = IMM(4);
1235   v = imm;
1236   tprintf("%x = %x\n", v, v);
1237   set_sz(v, 4);
1238   put_dest (dc, v);
1239
1240   /** 1111 ddd w dd10 immm              MOV.size:Q #IMM4,dest */
1241
1242   dc = decode_dest23 (ddd, dd, w+1);
1243   imm = sign_ext (immm, 4);
1244   v = imm;
1245   tprintf("%x = %d\n", v, v);
1246   set_sz(v, w+1);
1247   put_dest (dc, v);
1248
1249   /** 00dd 010w                         MOV.size:S #IMM,dest */
1250
1251   prefix (0, 1, 0);
1252   dc = decode_dest2 (dd, w+1);
1253   imm = IMM(w+1);
1254   put_dest (dc, imm);
1255   set_sz (imm, w+1);
1256
1257   /** 10w1 110d                         MOV.size:S #IMM,a0/a1 */
1258
1259   imm = IMM(w ? 3 : 2);
1260   put_reg (d ? a1 : a0, imm);
1261   set_sz (imm & addr_mask, w+1);
1262
1263   /** 00dd 001w                         MOV.size:Z #0,dest */
1264
1265   prefix (0, 1, 0);
1266   dc = decode_dest2 (dd, w+1);
1267   put_dest (dc, 0);
1268   set_sz (0, w+1);
1269
1270   /** 1sss ddd w dd ss 1011             MOV.size:G src,dest */
1271
1272   prefix (1, 1, 0);
1273   sc = decode_src23 (sss, ss, w+1);
1274   dc = decode_dest23 (ddd, dd, w+1);
1275   v = get_src (sc);
1276   put_dest (dc, v);
1277   set_sz (v, w+1);
1278
1279   /** 1sss ddd1 dd ss 0011              MOV.L:G src,dest */
1280
1281   prefix (1, 1, 0);
1282   sc = decode_src23 (sss, ss, 4);
1283   dc = decode_dest23 (ddd, dd, 4);
1284   v = get_src (sc);
1285   put_dest (dc, v);
1286   set_sz (v, 4);
1287
1288   /** VARY SS 01 10 11 */
1289   /** 00SS 100w                         MOV.size:S src,R0L/R0 */
1290
1291   prefix (0, 1, 0);
1292   sc = decode_dest2 (SS, w+1);
1293   v = get_src (sc);
1294   put_reg (w ? r0 : r0l, v);
1295   set_sz (v, w+1);
1296
1297   /** 01ss 111w                         MOV.size:S src,R1L/R1 */
1298
1299   prefix (0, 1, 0);
1300   sc = decode_dest2 (ss, w+1);
1301   v = get_src (sc);
1302   put_reg (w ? r1 : r1l, v);
1303   set_sz (v, w+1);
1304
1305   /** VARY DD 01 10 11 */
1306   /** 00DD 000w                         MOV.size:S R0L/R0,dest */
1307
1308   prefix (0, 1, 0);
1309   dc = decode_dest2 (DD, w+1);
1310   v = get_reg (w ? r0 : r0l);
1311   put_dest (dc, v);
1312   set_sz (v, w+1);
1313
1314   /** 01ss 100d                         MOV.L:S src,A0/A1 */
1315
1316   prefix (0, 1, 0);
1317   sc = decode_dest2 (ss, 4);
1318   v = get_src (sc);
1319   put_reg (d ? a1 : a0, v);
1320   set_sz (v, 4);
1321
1322   /** 1011 ddd w dd00 1111              MOV.size:G dsp:8[SP], dest */
1323
1324   prefix (0, 0, 0);
1325   imm = IMM(1);
1326   dc = decode_dest23 (ddd, dd, w+1);
1327   a = get_reg (sp) + sign_ext (imm, 8);
1328   a &= addr_mask;
1329   if (w)
1330     v = mem_get_hi (a);
1331   else
1332     v = mem_get_qi (a);
1333   put_dest (dc, v);
1334   set_sz (v, w+1);
1335
1336   /** 1010 sss w ss00 1111              MOV.size:G src,dsp:8[SP] */
1337
1338   prefix (0, 0, 0);
1339   sc = decode_dest23 (sss, ss, w+1);
1340   imm = IMM(1);
1341   a = get_reg (sp) + sign_ext (imm, 8);
1342   a &= addr_mask;
1343   v = get_src (sc);
1344   if (w)
1345     mem_put_hi (a, v);
1346   else
1347     mem_put_qi (a, v);
1348   set_sz (v, w+1);
1349
1350   /** 1101 sss1 ss01 1dst               MOVA src,dest */
1351
1352   static reg_id map[8] = { r2r0, r3r1, a0, a1 };
1353   prefix (0, 0, 0);
1354   sc = decode_src23 (sss, ss, 1);
1355   if (!sc.mem || !map[dst])
1356     UNSUPPORTED();
1357   put_reg (map[dst], sc.u.addr);
1358
1359   /** 0000 0001 1011 ddd0 dd hl 1110    MOVdir R0L,dest */
1360
1361   prefix (0, 0, 0);
1362   dc = decode_dest23 (ddd, dd, 1);
1363   a = get_src (dc);
1364   b = get_reg (r0l);
1365   switch (hl)
1366     {
1367     case 0: a = (a & 0xf0) | (b & 0x0f); break;
1368     case 1: a = (a & 0xf0) | ((b>>4) & 0x0f); break;
1369     case 2: a = (a & 0x0f) | ((b & 0x0f)<<4); break;
1370     case 3: a = (a & 0x0f) | (b & 0xf0); break;
1371     }
1372   put_dest (dc, a);
1373
1374   /** 0000 0001 1010 sss0 ss hl 1110    MOVdir src,R0L */
1375
1376   prefix (0, 0, 0);
1377   sc = decode_dest23 (sss, ss, 1);
1378   a = get_reg (r0l);
1379   b = get_src (dc);
1380   switch (hl)
1381     {
1382     case 0: a = (a & 0xf0) | (b & 0x0f); break;
1383     case 1: a = (a & 0xf0) | ((b>>4) & 0x0f); break;
1384     case 2: a = (a & 0x0f) | ((b & 0x0f)<<4); break;
1385     case 3: a = (a & 0x0f) | (b & 0xf0); break;
1386     }
1387   put_reg (r0l, a);
1388
1389   /** 1011 ddd0 dd01 0001               MOVX #IMM,dest */
1390
1391   prefix (0, 1, 0);
1392   dc = decode_dest23 (ddd, dd, 4);
1393   imm = sign_ext (IMM(1), 8);
1394   put_dest (dc, imm);
1395   set_sz (imm, 1);
1396
1397   /** 1000 ddd w dd01 1111              MUL.size #IMM,dest */
1398
1399   prefix (0, 1, 0);
1400   w ++;
1401   dc = decode_dest23 (ddd, dd, w);
1402   v = sign_ext (get_src (dc), w*8);
1403   imm = sign_ext (IMM(w), w*8);
1404   tprintf("%d * %d = %d\n", v, imm, v*imm);
1405   v *= imm;
1406   dc = widen_sd (dc);
1407   put_dest (dc, v);
1408
1409   /** 1sss ddd w dd ss 1100             MUL.size src,dest */
1410
1411   prefix (1, 1, 0);
1412   w ++;
1413   sc = decode_src23 (sss, ss, w);
1414   dc = decode_dest23 (ddd, dd, w);
1415   a = sign_ext (get_src (sc), w*8);
1416   b = sign_ext (get_src (dc), w*8);
1417   tprintf("%d * %d = %d\n", a, b, a*b);
1418   v = a * b;
1419   dc = widen_sd (dc);
1420   put_dest (dc, v);
1421
1422   /** 0000 0001 1000 sss1 ss01 1111     MUL.L src,R2R0 */
1423
1424   M32C_ONLY();
1425   prefix (0, 0, 0);
1426   sc = decode_src23 (sss, ss, 4);
1427   a = sign_ext (get_src (sc), 32);
1428   b = sign_ext (get_reg (r2r0), 32);
1429   ll = (long long)a * (long long)b;
1430   tprintf("%d * %d = %lld (%llx)\n", a, b, ll, ll);
1431   if (ll < b2minsigned[4] || ll > b2maxsigned[4])
1432     set_flags (FLAGBIT_O, FLAGBIT_O);
1433   else
1434     set_flags (FLAGBIT_O, 0);
1435   put_reg (r2r0, (int)ll);
1436
1437   /** 1100 sss1 ss11 1110               MULEX src */
1438
1439   prefix (0, 1, 0);
1440   sc = decode_dest23 (sss, ss, 2);
1441   a = sign_ext (get_src (sc), 16);
1442   b = sign_ext (get_reg (r2r0), 32);
1443   ll = (long long)a * (long long)b;
1444   tprintf("%d * %d = %lld (%llx)\n", a, b, ll, ll);
1445   put_reg (r2r0, (int)ll);
1446   put_reg (r1, (int)(ll >> 32));
1447
1448   /** 1000 ddd w dd00 1111              MULU.size #IMM,dest */
1449
1450   prefix (0, 1, 0);
1451   w ++;
1452   dc = decode_dest23 (ddd, dd, w);
1453   v = get_src (dc);
1454   imm = IMM(w);
1455   tprintf("%d * %d = %d\n", v, imm, v*imm);
1456   v *= imm;
1457   dc = widen_sd (dc);
1458   put_dest (dc, v);
1459
1460   /** 1sss ddd w dd ss 0100             MULU.size src,dest */
1461
1462   prefix (1, 1, 0);
1463   w ++;
1464   sc = decode_src23 (sss, ss, w);
1465   dc = decode_dest23 (ddd, dd, w);
1466   a = get_src (sc);
1467   b = get_src (dc);
1468   tprintf("%d * %d = %d\n", a, b, a*b);
1469   v = a * b;
1470   dc = widen_sd (dc);
1471   put_dest (dc, v);
1472
1473   /** 0000 0001 1000 sss1 ss00 1111     MULU.L src,R2R0 */
1474
1475   M32C_ONLY();
1476   prefix (0, 0, 0);
1477   sc = decode_src23 (sss, ss, 4);
1478   a = get_src (sc);
1479   b = get_reg (r2r0);
1480   ll = (long long)a * (long long)b;
1481   tprintf("%d * %d = %lld (%llx)\n", a, b, ll, ll);
1482   if (ll < b2minsigned[4] || ll > b2maxsigned[4])
1483     set_flags (FLAGBIT_O, FLAGBIT_O);
1484   else
1485     set_flags (FLAGBIT_O, 0);
1486   put_reg (r2r0, (int)ll);
1487
1488   /** 1010 ddd w dd10 1111              NEG.size dest */
1489
1490   prefix (0, 1, 0);
1491   dc = decode_dest23 (ddd, dd, w+1);
1492   a = sign_ext (get_src (dc), (w+1)*8);
1493   v = -a;
1494   tprintf("%d * -1 = %d\n", a, v);
1495   set_oszc(v, w+1, v==0);
1496   put_dest (dc, v);
1497
1498   /** 1101 1110                         NOP */
1499
1500   tprintf("nop\n");
1501
1502   /** 1010 ddd w dd01 1110              NOT.size dest */
1503
1504   prefix (0, 1, 0);
1505   dc = decode_dest23 (ddd, dd, w+1);
1506   a = get_src (dc);
1507   v = ~a;
1508   tprintf("~ %x = %x\n", a, v);
1509   set_sz(v, w+1);
1510   put_dest (dc, v);
1511
1512   /** 1000 ddd w dd10 1111              OR.size:G #IMM,dest */
1513
1514   prefix (0, 1, 0);
1515   dc = decode_dest23(ddd, dd, w+1);
1516   imm = IMM(w+1);
1517   LOGIC_OP (dc, imm, |);
1518
1519   /** 01dd 010w                         OR.size:S #IMM,dest */
1520
1521   prefix (0, 1, 0);
1522   dc = decode_dest2(dd, w+1);
1523   imm = IMM (w+1);
1524   LOGIC_OP (dc, imm, |);
1525
1526   /** 1sss ddd w dd ss 0101             OR.size:G src,dest */
1527
1528   prefix (1, 1, 0);
1529   sc = decode_src23(sss, ss, w+1);
1530   dc = decode_dest23(ddd, dd, w+1);
1531   b = get_src (sc);
1532   LOGIC_OP (dc, b, |);
1533
1534   /** 1011 ddd w dd10 1111              POP.size dest */
1535
1536   prefix (0, 1, 0);
1537   dc = decode_dest23 (ddd, dd, w+1);
1538   if (w)
1539     a = mem_get_hi (get_reg (sp));
1540   else
1541     a = mem_get_qi (get_reg (sp));
1542   put_reg (sp, get_reg (sp) + 2);
1543   tprintf("pop%s: %x\n", w ? "hi" : "qi", a);
1544   put_dest (dc, a);
1545
1546   /** 1101 0011 1010 1dst               POPC dest */
1547
1548   prefix (0, 0, 0);
1549   dc = decode_cr_b (dst, CR_B_DCT0);
1550   a = mem_get_hi (get_reg (sp));
1551   put_reg (sp, get_reg (sp) + 2);
1552   tprintf("pophi: %x\n", a);
1553   put_dest (dc, a);
1554
1555   /** 1101 0011 0010 1dst               POPC dest */
1556
1557   prefix (0, 0, 0);
1558   dc = decode_cr_b (dst, CR_B_INTB);
1559   a = mem_get_si (get_reg (sp));
1560   put_reg (sp, get_reg (sp) + 4);
1561   tprintf("popsi: %x\n", a);
1562   put_dest (dc, a);
1563
1564   /** 1000 1110                         POPM dest */
1565
1566   static int map[] = { r0, r1, r2, r3, a0, a1, sb, fb };
1567   prefix (0, 0, 0);
1568   imm = IMM(1);
1569   tprintf("popm: %x\n", imm);
1570   for (a=0; a<4; a++)
1571     if (imm & (1<<a))
1572       {
1573         v = mem_get_hi (get_reg (sp));
1574         put_reg (map[a], v);
1575         put_reg (sp, get_reg (sp) + 2);
1576       }
1577   for (; a<8; a++)
1578     if (imm & (1<<a))
1579       {
1580         v = mem_get_si (get_reg (sp));
1581         put_reg (map[a], v);
1582         put_reg (sp, get_reg (sp) + 4);
1583       }
1584
1585   /** 1010 111w                         PUSH.size #IMM */
1586
1587   prefix (0, 0, 0);
1588   imm = IMM(w+1);
1589   tprintf("push%s: %x\n", w ? "hi" : "qi", imm);
1590   int a = get_reg (sp) - 2;
1591   if (w)
1592     mem_put_hi (a, imm);
1593   else
1594     mem_put_qi (a, imm);
1595   put_reg (sp, a);
1596
1597   /** 1100 sss w ss00 1110              PUSH.size src */
1598
1599   prefix (0, 1, 0);
1600   sc = decode_dest23 (sss, ss, w+1);
1601   a = get_src (sc);
1602   put_reg (sp, get_reg (sp) - 2);
1603   if (w)
1604     mem_put_hi (get_reg (sp), a);
1605   else
1606     mem_put_qi (get_reg (sp), a);
1607   tprintf("push%s: %x\n", w ? "hi" : "qi", a);
1608
1609   /** 1011 0110 0101 0011               PUSH.L #IMM32 */
1610
1611   imm = IMM(4);
1612   put_reg (sp, get_reg (sp) - 4);
1613   mem_put_si (get_reg (sp), imm);
1614
1615   /** 1010 sss0 ss00 0001               PUSH.L src */
1616
1617   prefix (0, 1, 0);
1618   sc = decode_dest23 (sss, ss, 4);
1619   a = get_src (sc);
1620   put_reg (sp, get_reg (sp) - 4);
1621   mem_put_si (get_reg (sp), a);
1622
1623   /** 1011 0sa0 ss00 0001               PUSHA src */
1624
1625   prefix (0, 0, 0);
1626   sc = decode_dest23 (sa, ss, 1);
1627   put_reg (sp, get_reg (sp) - 4);
1628   mem_put_hi (get_reg (sp), sc.u.addr);
1629   tprintf("pushsi: %x\n", sc.u.addr);
1630
1631   /** 1101 0001 1010 1src               PUSHC src */
1632
1633   prefix (0, 0, 0);
1634   sc = decode_cr_b (src, CR_B_DCT0);
1635   a = get_src (sc);
1636   put_reg (sp, get_reg (sp) - 2);
1637   mem_put_hi (get_reg (sp), a);
1638   tprintf("pushhi: %x\n", a);
1639
1640   /** 1101 0001 0010 1src               PUSHC src */
1641
1642   prefix (0, 0, 0);
1643   sc = decode_cr_b (src, CR_B_INTB);
1644   a = get_src (sc);
1645   put_reg (sp, get_reg (sp) - 4);
1646   mem_put_si (get_reg (sp), a);
1647   tprintf("pushsi: %x\n", a);
1648
1649   /** 1000 1111                         PUSHM src */
1650
1651   static int map[] = { fb, sb, a1, a0, r3, r2, r1, r0 };
1652   imm = IMM(1);
1653   tprintf("pushm: %x\n", imm);
1654   for (a=0; a<4; a++)
1655     if (imm & (1<<a))
1656       {
1657         put_reg (sp, get_reg (sp) - 4);
1658         v = get_reg (map[a]);
1659         mem_put_si (get_reg (sp), v);
1660       }
1661   for (; a<8; a++)
1662     if (imm & (1<<a))
1663       {
1664         put_reg (sp, get_reg (sp) - 2);
1665         v = get_reg (map[a]);
1666         mem_put_hi (get_reg (sp), v);
1667       }
1668
1669   /** 1001 1110                         REIT */
1670
1671   a = get_reg (sp);
1672   put_reg (pc, mem_get_si (a));
1673   a += 4;
1674   put_reg (flags, mem_get_hi (a));
1675   a += 2;
1676   put_reg (sp, a);
1677
1678   /** 1011 1000 010w 0011               RMPA.size */
1679
1680   int count = get_reg (r3);
1681   int list1 = get_reg (a0);
1682   int list2 = get_reg (a1);
1683   long long sum = get_reg_ll (r3r1r2r0) & 0xffffff;
1684
1685   while (count)
1686     {
1687       if (w)
1688         {
1689           a = sign_ext (mem_get_hi (list1), 16);
1690           b = sign_ext (mem_get_hi (list2), 16);
1691         }
1692       else
1693         {
1694           a = sign_ext (mem_get_qi (list1), 8);
1695           b = sign_ext (mem_get_qi (list2), 8);
1696         }
1697       tprintf("%lld + %d * %d = ", sum, a, b);
1698       sum += a * b;
1699       tprintf("%lld\n", sum);
1700       list1 += w ? 2 : 1;
1701       list2 += w ? 2 : 1;
1702       count --;
1703     }
1704   put_reg (r3, count);
1705   put_reg (a0, list1);
1706   put_reg (a1, list2);
1707   put_reg (r2r0, (int)(sum & 0xffffffffU));
1708   put_reg (r1, (int)(sum >> 32));
1709
1710   /** 1011 ddd w dd10 1110              ROLC.size dest */
1711
1712   prefix (0, 1, 0);
1713   dc = decode_dest23 (ddd, dd, w+1);
1714   rot_op (dc, 1, 1);
1715
1716   /** 1010 ddd w dd10 1110              RORC.size dest */
1717
1718   prefix (0, 1, 0);
1719   dc = decode_dest23 (ddd, dd, w+1);
1720   rot_op (dc, 1, -1);
1721
1722   /** 1110 ddd w dd10 immm              ROT.size #IMM, dest */
1723
1724   prefix (0, 1, 0);
1725   dc = decode_dest23 (ddd, dd, w+1);
1726   rot_op (dc, IMM4(), -1);
1727
1728   /** 1010 ddd w dd11 1111              ROT.size R1H,dest */
1729
1730   prefix (0, 1, 0);
1731   dc = decode_dest23 (ddd, dd, w+1);
1732   a = sign_ext (get_reg (r1h), 8);
1733   rot_op (dc, a, -1);
1734
1735   /** 1101 1111                         RTS */
1736
1737   put_reg (pc, mem_get_si (get_reg (sp)));
1738   put_reg (sp, get_reg (sp) + 4);
1739
1740   /** 0000 0001 1001 ddd w dd10 1110    SBB.size #IMM, dest */
1741
1742   prefix (0, 0, 0);
1743   dc = decode_dest23 (ddd, dd, w+1);
1744   imm = IMM (w+1);
1745   MATH_OP (dc, imm, !carry, -);
1746
1747   /** 0000 0001 1sss ddd w dd ss 0110   SBB.size src,dest */
1748
1749   prefix (0, 0, 0);
1750   sc = decode_src23 (sss, ss, w+1);
1751   dc = decode_dest23 (ddd, dd, w+1);
1752   MATH_OP (dc, get_src (sc), !carry, -);
1753
1754   /** 1101 ddd1 dd11 cond               SCcond dest */
1755
1756   prefix (0, 1, 0);
1757   dc = decode_dest23 (ddd, dd, 2);
1758   if (condition_true (cond))
1759     put_dest (dc, 1);
1760   else
1761     put_dest (dc, 0);
1762
1763   /** 1011 1000 110w 0011               SCMPU.size */
1764
1765   ta0 = get_reg (a0);
1766   ta1 = get_reg (a1);
1767
1768   for (;;)
1769     {
1770       t0 = mem_get_qi (ta0);
1771       t2 = mem_get_qi (ta1);
1772       if (w)
1773         {
1774           t1 = mem_get_qi (ta0 + 1);
1775           t3 = mem_get_qi (ta1 + 1);
1776         }
1777       dif = t0 - t2;
1778       if (dif == 0 && t0 != 0 && w)
1779         dif = t1 - t3;
1780       set_oszc (dif, 1, dif > 0);
1781
1782       ta0 += w ? 2 : 1;
1783       ta1 += w ? 2 : 1;
1784
1785       if (t0 == 0 || t0 != t2)
1786         break;
1787       if (w && (t1 == 0 || t1 != t3))
1788         break;
1789     }
1790
1791   /** 1111 ddd w dd00 immm              SHA.size #IMM,dest */
1792
1793   prefix (0, 1, 0);
1794   dc = decode_dest23 (ddd, dd, w+1);
1795   shift_op (dc, 1, IMM4(), 1);
1796
1797   /** 1010 ddd0 dd10 0001               SHA.L #IMM,dest */
1798
1799   prefix (0, 1, 0);
1800   dc = decode_dest23 (ddd, dd, 4);
1801   imm = sign_ext (IMM(1), 8);
1802   shift_op (dc, 1, imm, 1);
1803
1804   /** 1011 ddd w dd11 1110              SHA.size R1H,dest */
1805
1806   prefix (0, 1, 0);
1807   dc = decode_dest23 (ddd, dd, w+1);
1808   a = sign_ext (get_reg (r1h), 8);
1809   shift_op (dc, 1, a, 1);
1810
1811   /** 1100 ddd0 dd01 0001               SHA.L   R1H,dest */
1812
1813   prefix (0, 1, 0);
1814   dc = decode_dest23 (ddd, dd, 4);
1815   a = sign_ext (get_reg (r1h), 8);
1816   shift_op (dc, 1, a, 1);
1817
1818   /** 1100 ddd0 dd10 0001               SHANC.L #IMM,dest */
1819
1820   M32C_ONLY();
1821   prefix (0, 1, 0);
1822   dc = decode_dest23 (ddd, dd, 4);
1823   imm = sign_ext (IMM(1), 8);
1824   shift_op (dc, 1, imm, 0);
1825
1826   /** 1110 ddd w dd00 immm              SHL.size #IMM, dest */
1827
1828   prefix (0, 1, 0);
1829   dc = decode_dest23 (ddd, dd, w+1);
1830   shift_op (dc, 0, IMM4(), 1);
1831
1832   /** 1001 ddd0 dd10 0001               SHL.L #IMM, dest */
1833
1834   prefix (0, 1, 0);
1835   dc = decode_dest23 (ddd, dd, 4);
1836   imm = sign_ext (IMM(1), 8);
1837   shift_op (dc, 0, imm, 1);
1838
1839   /** 1010 ddd w dd11 1110              SHL.size R1H,dest */
1840
1841   prefix (0, 1, 0);
1842   dc = decode_dest23 (ddd, dd, w+1);
1843   a = sign_ext (get_reg (r1h), 8);
1844   shift_op (dc, 0, a, 1);
1845
1846   /** 1100 ddd0 dd00 0001               SHL.L R1H,dest */
1847
1848   prefix (0, 1, 0);
1849   dc = decode_dest23 (ddd, dd, 4);
1850   a = sign_ext (get_reg (r1h), 8);
1851   shift_op (dc, 0, a, 1);
1852
1853   /** 1000 ddd0 dd10 0001               SHLNC.L #IMM,dest */
1854
1855   M32C_ONLY();
1856   prefix (0, 1, 0);
1857   dc = decode_dest23 (ddd, dd, 4);
1858   imm = sign_ext (IMM(1), 8);
1859   shift_op (dc, 0, imm, 0);
1860
1861   /** 1011 0010 100w 0011               SIN.size */
1862
1863   v = get_reg (a0);
1864   a = get_reg (a1);
1865   b = get_reg (r3);
1866   if (b) for (;b;)
1867     {
1868       if (w)
1869         mem_put_hi(a, mem_get_hi (v));
1870       else
1871         mem_put_qi(a, mem_get_qi (v));
1872       a += w ? 2 : 1;
1873       b --;
1874     }
1875   put_reg (a0, v);
1876   put_reg (a1, a);
1877   put_reg (r3, b);
1878
1879   /** 1011 0110 100w 0011               SMOVB.size */
1880
1881   v = get_reg (a0);
1882   a = get_reg (a1);
1883   b = get_reg (r3);
1884   if (b) for (;b;)
1885     {
1886       if (w)
1887         mem_put_hi(a, mem_get_hi (v));
1888       else
1889         mem_put_qi(a, mem_get_qi (v));
1890       v -= w ? 2 : 1;
1891       a -= w ? 2 : 1;
1892       b --;
1893     }
1894   put_reg (a0, v);
1895   put_reg (a1, a);
1896   put_reg (r3, b);
1897
1898   /** 1011 0000 100w 0011               SMOVF.size */
1899
1900   v = get_reg (a0);
1901   a = get_reg (a1);
1902   b = get_reg (r3);
1903   if (b) for (;b;)
1904     {
1905       if (w)
1906         mem_put_hi(a, mem_get_hi (v));
1907       else
1908         mem_put_qi(a, mem_get_qi (v));
1909       v += w ? 2 : 1;
1910       a += w ? 2 : 1;
1911       b --;
1912     }
1913   put_reg (a0, v);
1914   put_reg (a1, a);
1915   put_reg (r3, b);
1916
1917   /** 1011 1000 100w 0011               SMOVU.size */
1918
1919   v = get_reg (a0);
1920   a = get_reg (a1);
1921   do
1922     {
1923       if (w)
1924         mem_put_hi(a, (t0 = mem_get_hi (v)));
1925       else
1926         mem_put_qi(a, (t0 = mem_get_qi (v)));
1927       v += w ? 2 : 1;
1928       a += w ? 2 : 1;
1929       if (t0 == 0
1930           || (w && ((t0 & 0xff) == 0 || (t0 & 0xff00) == 0)))
1931         break;
1932     } while (1);
1933   put_reg (a0, v);
1934   put_reg (a1, a);
1935
1936   /** 1011 0100 100w 0011               SOUT.size */
1937
1938   v = get_reg (a0);
1939   a = get_reg (a1);
1940   b = get_reg (r3);
1941   for (;b;)
1942     {
1943       if (w)
1944         mem_put_hi(a, mem_get_hi (v));
1945       else
1946         mem_put_qi(a, mem_get_qi (v));
1947       v += w ? 2 : 1;
1948       b --;
1949     }
1950   put_reg (a0, v);
1951   put_reg (a1, a);
1952   put_reg (r3, b);
1953
1954   /** 1011 1000 000w 0011               SSTR.size */
1955
1956   a = get_reg (a1);
1957   b = get_reg (r3);
1958   v = get_reg (w ? r0 : r0l);
1959   for (;b;)
1960     {
1961       if (w)
1962         mem_put_hi(a, v);
1963       else
1964         mem_put_qi(a, v);
1965       a += w ? 2 : 1;
1966       b --;
1967     }
1968   put_reg (a1, a);
1969   put_reg (r3, b);
1970
1971   /** 0000 0001 1101 ddd1 dd01 0src     STC src,dest */
1972
1973   prefix (0, 0, 0);
1974   dc = decode_dest23 (ddd, dd, 4);
1975   sc = decode_cr_b (src, CR_B_DMA0);
1976   a = get_src (sc);
1977   put_dest (dc, a);
1978
1979   /** 0000 0001 1101 ddd1 dd01 1src     STC src,dest */
1980
1981   prefix (0, 0, 0);
1982   dc = decode_dest23 (ddd, dd, 2);
1983   sc = decode_cr_b (src, CR_B_DCT0);
1984   a = get_src (sc);
1985   put_dest (dc, a);
1986
1987   /** 1101 ddd1 dd01 0src               STC src,dest */
1988
1989   prefix (0, 0, 0);
1990   dc = decode_dest23 (ddd, dd, 4);
1991   sc = decode_cr_b (src, CR_B_INTB);
1992   a = get_src (sc);
1993   put_dest (dc, a);
1994
1995   /** 1011 0110 1101 0011               STCX abs16,abs24 */
1996
1997   NOTYET();
1998
1999   /** 1001 ddd w dd01 1111              STNZ.size #IMM,dest */
2000
2001   prefix (0, 1, 0);
2002   dc = decode_dest23 (ddd, dd, w+1);
2003   imm = IMM(w+1);
2004   if (! FLAG_Z)
2005     put_dest (dc, imm);
2006
2007   /** 1001 ddd w dd00 1111              STZ.size #IMM,dest */
2008
2009   prefix (0, 1, 0);
2010   dc = decode_dest23 (ddd, dd, w+1);
2011   imm = IMM(w+1);
2012   if (FLAG_Z)
2013     put_dest (dc, imm);
2014
2015   /** 1001 ddd w dd11 1111              STZX.size #IMM1,#IMM2,dest */
2016
2017   prefix (0, 1, 0);
2018   dc = decode_dest23 (ddd, dd, w+1);
2019   a = IMM(w+1);
2020   b = IMM(w+1);
2021   if (FLAG_Z)
2022     put_dest (dc, a);
2023   else
2024     put_dest (dc, b);
2025
2026   /** 1000 ddd w dd11 1110              SUB.size:G #IMM,dest */
2027
2028   prefix (0, 1, 0);
2029   dc = decode_dest23(ddd, dd, w+1);
2030   imm = IMM(w+1);
2031   MATH_OP (dc, imm, 0, -);
2032
2033   /** 1001 ddd0 dd11 0001               SUB.L:G #IMM,dest */
2034
2035   prefix (0, 1, 0);
2036   dc = decode_dest23(ddd, dd, 4);
2037   imm = IMM(4);
2038   MATH_OP (dc, imm, 0, -);
2039
2040   /** 00dd 111w                         SUB.size:S #IMM,dest */
2041
2042   prefix (0, 1, 0);
2043   dc = decode_dest2(dd, w+1);
2044   imm = IMM (w+1);
2045   MATH_OP (dc, imm, 0, -);
2046
2047   /** 1sss ddd w dd ss 1010             SUB.size:G src,dest */
2048
2049   prefix (1, 1, 0);
2050   sc = decode_src23(sss, ss, w+1);
2051   dc = decode_dest23(ddd, dd, w+1);
2052   b = get_src (sc);
2053   MATH_OP (dc, b, 0, -);
2054
2055   /** 1sss ddd1 dd ss 0000              SUB.L:G src,dest */
2056
2057   prefix (1, 1, 0);
2058   sc = decode_src23(sss, ss, 4);
2059   dc = decode_dest23(ddd, dd, 4);
2060   b = get_src (sc);
2061   MATH_OP (dc, b, 0, -);
2062
2063   /** 1001 ddd0 dd01 0001               SUBX #IMM,dest */
2064
2065   prefix (0, 1, 0);
2066   dc = decode_dest23(ddd, dd, 4);
2067   imm = sign_ext (IMM(1), 8);
2068   MATH_OP (dc, imm, 0, -);
2069
2070   /** 1sss ddd0 dd ss 0000              SUBX src,dest */
2071
2072   prefix (1, 1, 0);
2073   sc = decode_src23(sss, ss, 1);
2074   dc = decode_dest23(ddd, dd, 4);
2075   b = sign_ext (get_src (sc), 8);
2076   MATH_OP (dc, b, 0, -);
2077
2078   /** 1001 ddd w dd11 1110              TST.size:G #IMM,dest */
2079
2080   prefix (0, 0, 0);
2081   dc = decode_dest23 (ddd, dd, w+1);
2082   imm = IMM(w+1);
2083   a = get_src (dc);
2084   v = a & imm;
2085   set_sz (v, w+1);
2086
2087   /** 00dd 110w                         TST.size:S #IMM,dest */
2088
2089   prefix (0, 0, 0);
2090   dc = decode_dest2 (dd, w+1);
2091   imm = IMM(w+1);
2092   a = get_src (dc);
2093   v = a & imm;
2094   set_sz (v, w+1);
2095
2096   /** 0000 0001 1sss ddd w dd ss 1001   TST.size:G src,dest */
2097
2098   prefix (0, 0, 0);
2099   sc = decode_src23 (sss, ss, w+1);
2100   dc = decode_dest23 (ddd, dd, w+1);
2101   b = get_src (sc);
2102   a = get_src (dc);
2103   v = a & b;
2104   set_sz (v, w+1);
2105
2106   /** 1111 1111                         UND */
2107
2108   trigger_fixed_interrupt (0xffffdc);
2109
2110   /** 1011 0010 0000 0011               WAIT */
2111
2112   ;
2113
2114   /** 1101 ddd w dd00 1src              XCHG.size src,dest */
2115
2116   dc = decode_dest23 (ddd, dd, w+1);
2117   sc = decode_src3 (src, w+1);
2118   a = get_src (dc);
2119   b = get_src (sc);
2120   put_dest (dc, b);
2121   put_dest (sc, a);
2122
2123   /** 1001 ddd w dd00 1110              XOR.size #IMM,dest */
2124
2125   prefix (0, 1, 0);
2126   dc = decode_dest23(ddd, dd, w+1);
2127   imm = IMM(w+1);
2128   LOGIC_OP (dc, imm, ^);
2129
2130   /** 1sss ddd w dd ss 1001             XOR.size src,dest */
2131
2132   prefix (1, 1, 0);
2133   sc = decode_src23(sss, ss, w+1);
2134   dc = decode_dest23(ddd, dd, w+1);
2135   b = get_src (sc);
2136   LOGIC_OP (dc, b, ^);
2137
2138 /** */
2139
2140   return step_result;
2141 }