OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gdb-7.1/] [sim/] [v850/] [simops.c] - Blame information for rev 834

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 227 jeremybenn 
#include "sim-main.h"
2 
#include "v850_sim.h"
3 
#include "simops.h"
4 
 
5 
#include <sys/types.h>
6 
 
7 
#ifdef HAVE_UTIME_H
8 
#include <utime.h>
9 
#endif
10 
 
11 
#ifdef HAVE_TIME_H
12 
#include <time.h>
13 
#endif
14 
 
15 
#ifdef HAVE_UNISTD_H
16 
#include <unistd.h>
17 
#endif
18 
 
19 
#ifdef HAVE_STRING_H
20 
#include <string.h>
21 
#else
22 
#ifdef HAVE_STRINGS_H
23 
#include <strings.h>
24 
#endif
25 
#endif
26 
 
27 
#include "targ-vals.h"
28 
 
29 
#include "libiberty.h"
30 
 
31 
#include <errno.h>
32 
#if !defined(__GO32__) && !defined(_WIN32)
33 
#include <sys/stat.h>
34 
#include <sys/times.h>
35 
#include <sys/time.h>
36 
#endif
37 
 
38 
/* This is an array of the bit positions of registers r20 .. r31 in
39 
   that order in a prepare/dispose instruction.  */
40 
int type1_regs[12] = { 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 0, 21 };
41 
/* This is an array of the bit positions of registers r16 .. r31 in
42 
   that order in a push/pop instruction.  */
43 
int type2_regs[16] = { 3, 2, 1, 0, 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 20, 21};
44 
/* This is an array of the bit positions of registers r1 .. r15 in
45 
   that order in a push/pop instruction.  */
46 
int type3_regs[15] = { 2, 1, 0, 27, 26, 25, 24, 31, 30, 29, 28, 23, 22, 20, 21};
47 
 
48 
#ifdef DEBUG
49 
#ifndef SIZE_INSTRUCTION
50 
#define SIZE_INSTRUCTION 18
51 
#endif
52 
 
53 
#ifndef SIZE_VALUES
54 
#define SIZE_VALUES 11
55 
#endif
56 
 
57 
 
58 
unsigned32 trace_values[3];
59 
int trace_num_values;
60 
unsigned32 trace_pc;
61 
const char *trace_name;
62 
int trace_module;
63 
 
64 
 
65 
void
66 
trace_input (name, type, size)
67 
     char *name;
68 
     enum op_types type;
69 
     int size;
70 
{
71 
 
72 
  if (!TRACE_ALU_P (STATE_CPU (simulator, 0)))
73 
    return;
74 
 
75 
  trace_pc = PC;
76 
  trace_name = name;
77 
  trace_module = TRACE_ALU_IDX;
78 
 
79 
  switch (type)
80 
    {
81 
    default:
82 
    case OP_UNKNOWN:
83 
    case OP_NONE:
84 
    case OP_TRAP:
85 
      trace_num_values = 0;
86 
      break;
87 
 
88 
    case OP_REG:
89 
    case OP_REG_REG_MOVE:
90 
      trace_values[0] = State.regs[OP[0]];
91 
      trace_num_values = 1;
92 
      break;
93 
 
94 
    case OP_BIT_CHANGE:
95 
    case OP_REG_REG:
96 
    case OP_REG_REG_CMP:
97 
      trace_values[0] = State.regs[OP[1]];
98 
      trace_values[1] = State.regs[OP[0]];
99 
      trace_num_values = 2;
100 
      break;
101 
 
102 
    case OP_IMM_REG:
103 
    case OP_IMM_REG_CMP:
104 
      trace_values[0] = SEXT5 (OP[0]);
105 
      trace_values[1] = OP[1];
106 
      trace_num_values = 2;
107 
      break;
108 
 
109 
    case OP_IMM_REG_MOVE:
110 
      trace_values[0] = SEXT5 (OP[0]);
111 
      trace_num_values = 1;
112 
      break;
113 
 
114 
    case OP_COND_BR:
115 
      trace_values[0] = State.pc;
116 
      trace_values[1] = SEXT9 (OP[0]);
117 
      trace_values[2] = PSW;
118 
      trace_num_values = 3;
119 
      break;
120 
 
121 
    case OP_LOAD16:
122 
      trace_values[0] = OP[1] * size;
123 
      trace_values[1] = State.regs[30];
124 
      trace_num_values = 2;
125 
      break;
126 
 
127 
    case OP_STORE16:
128 
      trace_values[0] = State.regs[OP[0]];
129 
      trace_values[1] = OP[1] * size;
130 
      trace_values[2] = State.regs[30];
131 
      trace_num_values = 3;
132 
      break;
133 
 
134 
    case OP_LOAD32:
135 
      trace_values[0] = EXTEND16 (OP[2]);
136 
      trace_values[1] = State.regs[OP[0]];
137 
      trace_num_values = 2;
138 
      break;
139 
 
140 
    case OP_STORE32:
141 
      trace_values[0] = State.regs[OP[1]];
142 
      trace_values[1] = EXTEND16 (OP[2]);
143 
      trace_values[2] = State.regs[OP[0]];
144 
      trace_num_values = 3;
145 
      break;
146 
 
147 
    case OP_JUMP:
148 
      trace_values[0] = SEXT22 (OP[0]);
149 
      trace_values[1] = State.pc;
150 
      trace_num_values = 2;
151 
      break;
152 
 
153 
    case OP_IMM_REG_REG:
154 
      trace_values[0] = EXTEND16 (OP[0]) << size;
155 
      trace_values[1] = State.regs[OP[1]];
156 
      trace_num_values = 2;
157 
      break;
158 
 
159 
    case OP_IMM16_REG_REG:
160 
      trace_values[0] = EXTEND16 (OP[2]) << size;
161 
      trace_values[1] = State.regs[OP[1]];
162 
      trace_num_values = 2;
163 
      break;
164 
 
165 
    case OP_UIMM_REG_REG:
166 
      trace_values[0] = (OP[0] & 0xffff) << size;
167 
      trace_values[1] = State.regs[OP[1]];
168 
      trace_num_values = 2;
169 
      break;
170 
 
171 
    case OP_UIMM16_REG_REG:
172 
      trace_values[0] = (OP[2]) << size;
173 
      trace_values[1] = State.regs[OP[1]];
174 
      trace_num_values = 2;
175 
      break;
176 
 
177 
    case OP_BIT:
178 
      trace_num_values = 0;
179 
      break;
180 
 
181 
    case OP_EX1:
182 
      trace_values[0] = PSW;
183 
      trace_num_values = 1;
184 
      break;
185 
 
186 
    case OP_EX2:
187 
      trace_num_values = 0;
188 
      break;
189 
 
190 
    case OP_LDSR:
191 
      trace_values[0] = State.regs[OP[0]];
192 
      trace_num_values = 1;
193 
      break;
194 
 
195 
    case OP_STSR:
196 
      trace_values[0] = State.sregs[OP[1]];
197 
      trace_num_values = 1;
198 
    }
199 
 
200 
}
201 
 
202 
void
203 
trace_result (int has_result, unsigned32 result)
204 
{
205 
  char buf[1000];
206 
  char *chp;
207 
 
208 
  buf[0] = '\0';
209 
  chp = buf;
210 
 
211 
  /* write out the values saved during the trace_input call */
212 
  {
213 
    int i;
214 
    for (i = 0; i < trace_num_values; i++)
215 
      {
216 
        sprintf (chp, "%*s0x%.8lx", SIZE_VALUES - 10, "",
217 
                 (long) trace_values[i]);
218 
        chp = strchr (chp, '\0');
219 
      }
220 
    while (i++ < 3)
221 
      {
222 
        sprintf (chp, "%*s", SIZE_VALUES, "");
223 
        chp = strchr (chp, '\0');
224 
      }
225 
  }
226 
 
227 
  /* append any result to the end of the buffer */
228 
  if (has_result)
229 
    sprintf (chp, " :: 0x%.8lx", (unsigned long)result);
230 
 
231 
  trace_generic (simulator, STATE_CPU (simulator, 0), trace_module, buf);
232 
}
233 
 
234 
void
235 
trace_output (result)
236 
     enum op_types result;
237 
{
238 
  if (!TRACE_ALU_P (STATE_CPU (simulator, 0)))
239 
    return;
240 
 
241 
  switch (result)
242 
    {
243 
    default:
244 
    case OP_UNKNOWN:
245 
    case OP_NONE:
246 
    case OP_TRAP:
247 
    case OP_REG:
248 
    case OP_REG_REG_CMP:
249 
    case OP_IMM_REG_CMP:
250 
    case OP_COND_BR:
251 
    case OP_STORE16:
252 
    case OP_STORE32:
253 
    case OP_BIT:
254 
    case OP_EX2:
255 
      trace_result (0, 0);
256 
      break;
257 
 
258 
    case OP_LOAD16:
259 
    case OP_STSR:
260 
      trace_result (1, State.regs[OP[0]]);
261 
      break;
262 
 
263 
    case OP_REG_REG:
264 
    case OP_REG_REG_MOVE:
265 
    case OP_IMM_REG:
266 
    case OP_IMM_REG_MOVE:
267 
    case OP_LOAD32:
268 
    case OP_EX1:
269 
      trace_result (1, State.regs[OP[1]]);
270 
      break;
271 
 
272 
    case OP_IMM_REG_REG:
273 
    case OP_UIMM_REG_REG:
274 
    case OP_IMM16_REG_REG:
275 
    case OP_UIMM16_REG_REG:
276 
      trace_result (1, State.regs[OP[1]]);
277 
      break;
278 
 
279 
    case OP_JUMP:
280 
      if (OP[1] != 0)
281 
        trace_result (1, State.regs[OP[1]]);
282 
      else
283 
        trace_result (0, 0);
284 
      break;
285 
 
286 
    case OP_LDSR:
287 
      trace_result (1, State.sregs[OP[1]]);
288 
      break;
289 
    }
290 
}
291 
#endif
292 
 
293 
 
294 
/* Returns 1 if the specific condition is met, returns 0 otherwise.  */
295 
int
296 
condition_met (unsigned code)
297 
{
298 
  unsigned int psw = PSW;
299 
 
300 
  switch (code & 0xf)
301 
    {
302 
      case 0x0: return ((psw & PSW_OV) != 0);
303 
      case 0x1: return ((psw & PSW_CY) != 0);
304 
      case 0x2: return ((psw & PSW_Z) != 0);
305 
      case 0x3: return ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) != 0);
306 
      case 0x4: return ((psw & PSW_S) != 0);
307 
    /*case 0x5: return 1;*/
308 
      case 0x6: return ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) != 0);
309 
      case 0x7: return (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) || ((psw & PSW_Z) != 0)) != 0);
310 
      case 0x8: return ((psw & PSW_OV) == 0);
311 
      case 0x9: return ((psw & PSW_CY) == 0);
312 
      case 0xa: return ((psw & PSW_Z) == 0);
313 
      case 0xb: return ((((psw & PSW_CY) != 0) | ((psw & PSW_Z) != 0)) == 0);
314 
      case 0xc: return ((psw & PSW_S) == 0);
315 
      case 0xd: return ((psw & PSW_SAT) != 0);
316 
      case 0xe: return ((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) == 0);
317 
      case 0xf: return (((((psw & PSW_S) != 0) ^ ((psw & PSW_OV) != 0)) || ((psw & PSW_Z) != 0)) == 0);
318 
    }
319 
 
320 
  return 1;
321 
}
322 
 
323 
static unsigned long
324 
Add32 (unsigned long a1, unsigned long a2, int * carry)
325 
{
326 
  unsigned long result = (a1 + a2);
327 
 
328 
  * carry = (result < a1);
329 
 
330 
  return result;
331 
}
332 
 
333 
static void
334 
Multiply64 (int sign, unsigned long op0)
335 
{
336 
  unsigned long op1;
337 
  unsigned long lo;
338 
  unsigned long mid1;
339 
  unsigned long mid2;
340 
  unsigned long hi;
341 
  unsigned long RdLo;
342 
  unsigned long RdHi;
343 
  int           carry;
344 
 
345 
  op1 = State.regs[ OP[1] ];
346 
 
347 
  if (sign)
348 
    {
349 
      /* Compute sign of result and adjust operands if necessary.  */
350 
 
351 
      sign = (op0 ^ op1) & 0x80000000;
352 
 
353 
      if (((signed long) op0) < 0)
354 
        op0 = - op0;
355 
 
356 
      if (((signed long) op1) < 0)
357 
        op1 = - op1;
358 
    }
359 
 
360 
  /* We can split the 32x32 into four 16x16 operations. This ensures
361 
     that we do not lose precision on 32bit only hosts: */
362 
  lo   = ( (op0        & 0xFFFF) *  (op1        & 0xFFFF));
363 
  mid1 = ( (op0        & 0xFFFF) * ((op1 >> 16) & 0xFFFF));
364 
  mid2 = (((op0 >> 16) & 0xFFFF) *  (op1        & 0xFFFF));
365 
  hi   = (((op0 >> 16) & 0xFFFF) * ((op1 >> 16) & 0xFFFF));
366 
 
367 
  /* We now need to add all of these results together, taking care
368 
     to propogate the carries from the additions: */
369 
  RdLo = Add32 (lo, (mid1 << 16), & carry);
370 
  RdHi = carry;
371 
  RdLo = Add32 (RdLo, (mid2 << 16), & carry);
372 
  RdHi += (carry + ((mid1 >> 16) & 0xFFFF) + ((mid2 >> 16) & 0xFFFF) + hi);
373 
 
374 
  if (sign)
375 
    {
376 
      /* Negate result if necessary.  */
377 
 
378 
      RdLo = ~ RdLo;
379 
      RdHi = ~ RdHi;
380 
      if (RdLo == 0xFFFFFFFF)
381 
        {
382 
          RdLo = 0;
383 
          RdHi += 1;
384 
        }
385 
      else
386 
        RdLo += 1;
387 
    }
388 
 
389 
  /* Don't store into register 0.  */
390 
  if (OP[1])
391 
    State.regs[ OP[1]       ] = RdLo;
392 
  if (OP[2] >> 11)
393 
    State.regs[ OP[2] >> 11 ] = RdHi;
394 
 
395 
  return;
396 
}
397 
 
398 
 
399 
/* Read a null terminated string from memory, return in a buffer */
400 
static char *
401 
fetch_str (sd, addr)
402 
     SIM_DESC sd;
403 
     address_word addr;
404 
{
405 
  char *buf;
406 
  int nr = 0;
407 
  while (sim_core_read_1 (STATE_CPU (sd, 0),
408 
                          PC, read_map, addr + nr) != 0)
409 
    nr++;
410 
  buf = NZALLOC (char, nr + 1);
411 
  sim_read (simulator, addr, buf, nr);
412 
  return buf;
413 
}
414 
 
415 
/* Read a null terminated argument vector from memory, return in a
416 
   buffer */
417 
static char **
418 
fetch_argv (sd, addr)
419 
     SIM_DESC sd;
420 
     address_word addr;
421 
{
422 
  int max_nr = 64;
423 
  int nr = 0;
424 
  char **buf = xmalloc (max_nr * sizeof (char*));
425 
  while (1)
426 
    {
427 
      unsigned32 a = sim_core_read_4 (STATE_CPU (sd, 0),
428 
                                      PC, read_map, addr + nr * 4);
429 
      if (a == 0) break;
430 
      buf[nr] = fetch_str (sd, a);
431 
      nr ++;
432 
      if (nr == max_nr - 1)
433 
        {
434 
          max_nr += 50;
435 
          buf = xrealloc (buf, max_nr * sizeof (char*));
436 
        }
437 
    }
438 
  buf[nr] = 0;
439 
  return buf;
440 
}
441 
 
442 
 
443 
/* sst.b */
444 
int
445 
OP_380 ()
446 
{
447 
  trace_input ("sst.b", OP_STORE16, 1);
448 
 
449 
  store_mem (State.regs[30] + (OP[3] & 0x7f), 1, State.regs[ OP[1] ]);
450 
 
451 
  trace_output (OP_STORE16);
452 
 
453 
  return 2;
454 
}
455 
 
456 
/* sst.h */
457 
int
458 
OP_480 ()
459 
{
460 
  trace_input ("sst.h", OP_STORE16, 2);
461 
 
462 
  store_mem (State.regs[30] + ((OP[3] & 0x7f) << 1), 2, State.regs[ OP[1] ]);
463 
 
464 
  trace_output (OP_STORE16);
465 
 
466 
  return 2;
467 
}
468 
 
469 
/* sst.w */
470 
int
471 
OP_501 ()
472 
{
473 
  trace_input ("sst.w", OP_STORE16, 4);
474 
 
475 
  store_mem (State.regs[30] + ((OP[3] & 0x7e) << 1), 4, State.regs[ OP[1] ]);
476 
 
477 
  trace_output (OP_STORE16);
478 
 
479 
  return 2;
480 
}
481 
 
482 
/* ld.b */
483 
int
484 
OP_700 ()
485 
{
486 
  int adr;
487 
 
488 
  trace_input ("ld.b", OP_LOAD32, 1);
489 
 
490 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);
491 
 
492 
  State.regs[ OP[1] ] = EXTEND8 (load_mem (adr, 1));
493 
 
494 
  trace_output (OP_LOAD32);
495 
 
496 
  return 4;
497 
}
498 
 
499 
/* ld.h */
500 
int
501 
OP_720 ()
502 
{
503 
  int adr;
504 
 
505 
  trace_input ("ld.h", OP_LOAD32, 2);
506 
 
507 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);
508 
  adr &= ~0x1;
509 
 
510 
  State.regs[ OP[1] ] = EXTEND16 (load_mem (adr, 2));
511 
 
512 
  trace_output (OP_LOAD32);
513 
 
514 
  return 4;
515 
}
516 
 
517 
/* ld.w */
518 
int
519 
OP_10720 ()
520 
{
521 
  int adr;
522 
 
523 
  trace_input ("ld.w", OP_LOAD32, 4);
524 
 
525 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
526 
  adr &= ~0x3;
527 
 
528 
  State.regs[ OP[1] ] = load_mem (adr, 4);
529 
 
530 
  trace_output (OP_LOAD32);
531 
 
532 
  return 4;
533 
}
534 
 
535 
/* st.b */
536 
int
537 
OP_740 ()
538 
{
539 
  trace_input ("st.b", OP_STORE32, 1);
540 
 
541 
  store_mem (State.regs[ OP[0] ] + EXTEND16 (OP[2]), 1, State.regs[ OP[1] ]);
542 
 
543 
  trace_output (OP_STORE32);
544 
 
545 
  return 4;
546 
}
547 
 
548 
/* st.h */
549 
int
550 
OP_760 ()
551 
{
552 
  int adr;
553 
 
554 
  trace_input ("st.h", OP_STORE32, 2);
555 
 
556 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2]);
557 
  adr &= ~1;
558 
 
559 
  store_mem (adr, 2, State.regs[ OP[1] ]);
560 
 
561 
  trace_output (OP_STORE32);
562 
 
563 
  return 4;
564 
}
565 
 
566 
/* st.w */
567 
int
568 
OP_10760 ()
569 
{
570 
  int adr;
571 
 
572 
  trace_input ("st.w", OP_STORE32, 4);
573 
 
574 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
575 
  adr &= ~3;
576 
 
577 
  store_mem (adr, 4, State.regs[ OP[1] ]);
578 
 
579 
  trace_output (OP_STORE32);
580 
 
581 
  return 4;
582 
}
583 
 
584 
/* add reg, reg */
585 
int
586 
OP_1C0 ()
587 
{
588 
  unsigned int op0, op1, result, z, s, cy, ov;
589 
 
590 
  trace_input ("add", OP_REG_REG, 0);
591 
 
592 
  /* Compute the result.  */
593 
 
594 
  op0 = State.regs[ OP[0] ];
595 
  op1 = State.regs[ OP[1] ];
596 
 
597 
  result = op0 + op1;
598 
 
599 
  /* Compute the condition codes.  */
600 
  z = (result == 0);
601 
  s = (result & 0x80000000);
602 
  cy = (result < op0 || result < op1);
603 
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
604 
        && (op0 & 0x80000000) != (result & 0x80000000));
605 
 
606 
  /* Store the result and condition codes.  */
607 
  State.regs[OP[1]] = result;
608 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
609 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
610 
                     | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
611 
  trace_output (OP_REG_REG);
612 
 
613 
  return 2;
614 
}
615 
 
616 
/* add sign_extend(imm5), reg */
617 
int
618 
OP_240 ()
619 
{
620 
  unsigned int op0, op1, result, z, s, cy, ov;
621 
  int temp;
622 
 
623 
  trace_input ("add", OP_IMM_REG, 0);
624 
 
625 
  /* Compute the result.  */
626 
  temp = SEXT5 (OP[0]);
627 
  op0 = temp;
628 
  op1 = State.regs[OP[1]];
629 
  result = op0 + op1;
630 
 
631 
  /* Compute the condition codes.  */
632 
  z = (result == 0);
633 
  s = (result & 0x80000000);
634 
  cy = (result < op0 || result < op1);
635 
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
636 
        && (op0 & 0x80000000) != (result & 0x80000000));
637 
 
638 
  /* Store the result and condition codes.  */
639 
  State.regs[OP[1]] = result;
640 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
641 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
642 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
643 
  trace_output (OP_IMM_REG);
644 
 
645 
  return 2;
646 
}
647 
 
648 
/* addi sign_extend(imm16), reg, reg */
649 
int
650 
OP_600 ()
651 
{
652 
  unsigned int op0, op1, result, z, s, cy, ov;
653 
 
654 
  trace_input ("addi", OP_IMM16_REG_REG, 0);
655 
 
656 
  /* Compute the result.  */
657 
 
658 
  op0 = EXTEND16 (OP[2]);
659 
  op1 = State.regs[ OP[0] ];
660 
  result = op0 + op1;
661 
 
662 
  /* Compute the condition codes.  */
663 
  z = (result == 0);
664 
  s = (result & 0x80000000);
665 
  cy = (result < op0 || result < op1);
666 
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
667 
        && (op0 & 0x80000000) != (result & 0x80000000));
668 
 
669 
  /* Store the result and condition codes.  */
670 
  State.regs[OP[1]] = result;
671 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
672 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
673 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
674 
  trace_output (OP_IMM16_REG_REG);
675 
 
676 
  return 4;
677 
}
678 
 
679 
/* sub reg1, reg2 */
680 
int
681 
OP_1A0 ()
682 
{
683 
  unsigned int op0, op1, result, z, s, cy, ov;
684 
 
685 
  trace_input ("sub", OP_REG_REG, 0);
686 
  /* Compute the result.  */
687 
  op0 = State.regs[ OP[0] ];
688 
  op1 = State.regs[ OP[1] ];
689 
  result = op1 - op0;
690 
 
691 
  /* Compute the condition codes.  */
692 
  z = (result == 0);
693 
  s = (result & 0x80000000);
694 
  cy = (op1 < op0);
695 
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
696 
        && (op1 & 0x80000000) != (result & 0x80000000));
697 
 
698 
  /* Store the result and condition codes.  */
699 
  State.regs[OP[1]] = result;
700 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
701 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
702 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
703 
  trace_output (OP_REG_REG);
704 
 
705 
  return 2;
706 
}
707 
 
708 
/* subr reg1, reg2 */
709 
int
710 
OP_180 ()
711 
{
712 
  unsigned int op0, op1, result, z, s, cy, ov;
713 
 
714 
  trace_input ("subr", OP_REG_REG, 0);
715 
  /* Compute the result.  */
716 
  op0 = State.regs[ OP[0] ];
717 
  op1 = State.regs[ OP[1] ];
718 
  result = op0 - op1;
719 
 
720 
  /* Compute the condition codes.  */
721 
  z = (result == 0);
722 
  s = (result & 0x80000000);
723 
  cy = (op0 < op1);
724 
  ov = ((op0 & 0x80000000) != (op1 & 0x80000000)
725 
        && (op0 & 0x80000000) != (result & 0x80000000));
726 
 
727 
  /* Store the result and condition codes.  */
728 
  State.regs[OP[1]] = result;
729 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
730 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
731 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
732 
  trace_output (OP_REG_REG);
733 
 
734 
  return 2;
735 
}
736 
 
737 
/* sxh reg1 */
738 
int
739 
OP_E0 ()
740 
{
741 
  trace_input ("mulh", OP_REG_REG, 0);
742 
 
743 
  State.regs[ OP[1] ] = (EXTEND16 (State.regs[ OP[1] ]) * EXTEND16 (State.regs[ OP[0] ]));
744 
 
745 
  trace_output (OP_REG_REG);
746 
 
747 
  return 2;
748 
}
749 
 
750 
/* mulh sign_extend(imm5), reg2 */
751 
int
752 
OP_2E0 ()
753 
{
754 
  trace_input ("mulh", OP_IMM_REG, 0);
755 
 
756 
  State.regs[ OP[1] ] = EXTEND16 (State.regs[ OP[1] ]) * SEXT5 (OP[0]);
757 
 
758 
  trace_output (OP_IMM_REG);
759 
 
760 
  return 2;
761 
}
762 
 
763 
/* mulhi imm16, reg1, reg2 */
764 
int
765 
OP_6E0 ()
766 
{
767 
  trace_input ("mulhi", OP_IMM16_REG_REG, 0);
768 
 
769 
  State.regs[ OP[1] ] = EXTEND16 (State.regs[ OP[0] ]) * EXTEND16 (OP[2]);
770 
 
771 
  trace_output (OP_IMM16_REG_REG);
772 
 
773 
  return 4;
774 
}
775 
 
776 
/* cmp reg, reg */
777 
int
778 
OP_1E0 ()
779 
{
780 
  unsigned int op0, op1, result, z, s, cy, ov;
781 
 
782 
  trace_input ("cmp", OP_REG_REG_CMP, 0);
783 
  /* Compute the result.  */
784 
  op0 = State.regs[ OP[0] ];
785 
  op1 = State.regs[ OP[1] ];
786 
  result = op1 - op0;
787 
 
788 
  /* Compute the condition codes.  */
789 
  z = (result == 0);
790 
  s = (result & 0x80000000);
791 
  cy = (op1 < op0);
792 
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
793 
        && (op1 & 0x80000000) != (result & 0x80000000));
794 
 
795 
  /* Set condition codes.  */
796 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
797 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
798 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
799 
  trace_output (OP_REG_REG_CMP);
800 
 
801 
  return 2;
802 
}
803 
 
804 
/* cmp sign_extend(imm5), reg */
805 
int
806 
OP_260 ()
807 
{
808 
  unsigned int op0, op1, result, z, s, cy, ov;
809 
  int temp;
810 
 
811 
  /* Compute the result.  */
812 
  trace_input ("cmp", OP_IMM_REG_CMP, 0);
813 
  temp = SEXT5 (OP[0]);
814 
  op0 = temp;
815 
  op1 = State.regs[OP[1]];
816 
  result = op1 - op0;
817 
 
818 
  /* Compute the condition codes.  */
819 
  z = (result == 0);
820 
  s = (result & 0x80000000);
821 
  cy = (op1 < op0);
822 
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
823 
        && (op1 & 0x80000000) != (result & 0x80000000));
824 
 
825 
  /* Set condition codes.  */
826 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
827 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
828 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0));
829 
  trace_output (OP_IMM_REG_CMP);
830 
 
831 
  return 2;
832 
}
833 
 
834 
/* setf cccc,reg2 */
835 
int
836 
OP_7E0 ()
837 
{
838 
  trace_input ("setf", OP_EX1, 0);
839 
 
840 
  State.regs[ OP[1] ] = condition_met (OP[0]);
841 
 
842 
  trace_output (OP_EX1);
843 
 
844 
  return 4;
845 
}
846 
 
847 
/* satadd reg,reg */
848 
int
849 
OP_C0 ()
850 
{
851 
  unsigned int op0, op1, result, z, s, cy, ov, sat;
852 
 
853 
  trace_input ("satadd", OP_REG_REG, 0);
854 
  /* Compute the result.  */
855 
  op0 = State.regs[ OP[0] ];
856 
  op1 = State.regs[ OP[1] ];
857 
  result = op0 + op1;
858 
 
859 
  /* Compute the condition codes.  */
860 
  z = (result == 0);
861 
  s = (result & 0x80000000);
862 
  cy = (result < op0 || result < op1);
863 
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
864 
        && (op0 & 0x80000000) != (result & 0x80000000));
865 
  sat = ov;
866 
 
867 
  /* Handle saturated results.  */
868 
  if (sat && s)
869 
    {
870 
      /* An overflow that results in a negative result implies that we
871 
         became too positive.  */
872 
      result = 0x7fffffff;
873 
      s = 0;
874 
    }
875 
  else if (sat)
876 
    {
877 
      /* Any other overflow must have thus been too negative.  */
878 
      result = 0x80000000;
879 
      s = 1;
880 
      z = 0;
881 
    }
882 
 
883 
  /* Store the result and condition codes.  */
884 
  State.regs[OP[1]] = result;
885 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
886 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
887 
          | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
888 
          | (sat ? PSW_SAT : 0));
889 
 
890 
  trace_output (OP_REG_REG);
891 
 
892 
  return 2;
893 
}
894 
 
895 
/* satadd sign_extend(imm5), reg */
896 
int
897 
OP_220 ()
898 
{
899 
  unsigned int op0, op1, result, z, s, cy, ov, sat;
900 
 
901 
  int temp;
902 
 
903 
  trace_input ("satadd", OP_IMM_REG, 0);
904 
 
905 
  /* Compute the result.  */
906 
  temp = SEXT5 (OP[0]);
907 
  op0 = temp;
908 
  op1 = State.regs[OP[1]];
909 
  result = op0 + op1;
910 
 
911 
  /* Compute the condition codes.  */
912 
  z = (result == 0);
913 
  s = (result & 0x80000000);
914 
  cy = (result < op0 || result < op1);
915 
  ov = ((op0 & 0x80000000) == (op1 & 0x80000000)
916 
        && (op0 & 0x80000000) != (result & 0x80000000));
917 
  sat = ov;
918 
 
919 
  /* Handle saturated results.  */
920 
  if (sat && s)
921 
    {
922 
      /* An overflow that results in a negative result implies that we
923 
         became too positive.  */
924 
      result = 0x7fffffff;
925 
      s = 0;
926 
    }
927 
  else if (sat)
928 
    {
929 
      /* Any other overflow must have thus been too negative.  */
930 
      result = 0x80000000;
931 
      s = 1;
932 
      z = 0;
933 
    }
934 
 
935 
  /* Store the result and condition codes.  */
936 
  State.regs[OP[1]] = result;
937 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
938 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
939 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
940 
                | (sat ? PSW_SAT : 0));
941 
  trace_output (OP_IMM_REG);
942 
 
943 
  return 2;
944 
}
945 
 
946 
/* satsub reg1, reg2 */
947 
int
948 
OP_A0 ()
949 
{
950 
  unsigned int op0, op1, result, z, s, cy, ov, sat;
951 
 
952 
  trace_input ("satsub", OP_REG_REG, 0);
953 
 
954 
  /* Compute the result.  */
955 
  op0 = State.regs[ OP[0] ];
956 
  op1 = State.regs[ OP[1] ];
957 
  result = op1 - op0;
958 
 
959 
  /* Compute the condition codes.  */
960 
  z = (result == 0);
961 
  s = (result & 0x80000000);
962 
  cy = (op1 < op0);
963 
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
964 
        && (op1 & 0x80000000) != (result & 0x80000000));
965 
  sat = ov;
966 
 
967 
  /* Handle saturated results.  */
968 
  if (sat && s)
969 
    {
970 
      /* An overflow that results in a negative result implies that we
971 
         became too positive.  */
972 
      result = 0x7fffffff;
973 
      s = 0;
974 
    }
975 
  else if (sat)
976 
    {
977 
      /* Any other overflow must have thus been too negative.  */
978 
      result = 0x80000000;
979 
      s = 1;
980 
      z = 0;
981 
    }
982 
 
983 
  /* Store the result and condition codes.  */
984 
  State.regs[OP[1]] = result;
985 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
986 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
987 
          | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
988 
          | (sat ? PSW_SAT : 0));
989 
 
990 
  trace_output (OP_REG_REG);
991 
  return 2;
992 
}
993 
 
994 
/* satsubi sign_extend(imm16), reg */
995 
int
996 
OP_660 ()
997 
{
998 
  unsigned int op0, op1, result, z, s, cy, ov, sat;
999 
  int temp;
1000 
 
1001 
  trace_input ("satsubi", OP_IMM_REG, 0);
1002 
 
1003 
  /* Compute the result.  */
1004 
  temp = EXTEND16 (OP[2]);
1005 
  op0 = temp;
1006 
  op1 = State.regs[ OP[0] ];
1007 
  result = op1 - op0;
1008 
 
1009 
  /* Compute the condition codes.  */
1010 
  z = (result == 0);
1011 
  s = (result & 0x80000000);
1012 
  cy = (op1 < op0);
1013 
  ov = ((op1 & 0x80000000) != (op0 & 0x80000000)
1014 
        && (op1 & 0x80000000) != (result & 0x80000000));
1015 
  sat = ov;
1016 
 
1017 
  /* Handle saturated results.  */
1018 
  if (sat && s)
1019 
    {
1020 
      /* An overflow that results in a negative result implies that we
1021 
         became too positive.  */
1022 
      result = 0x7fffffff;
1023 
      s = 0;
1024 
    }
1025 
  else if (sat)
1026 
    {
1027 
      /* Any other overflow must have thus been too negative.  */
1028 
      result = 0x80000000;
1029 
      s = 1;
1030 
      z = 0;
1031 
    }
1032 
 
1033 
  /* Store the result and condition codes.  */
1034 
  State.regs[OP[1]] = result;
1035 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
1036 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1037 
                | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
1038 
                | (sat ? PSW_SAT : 0));
1039 
 
1040 
  trace_output (OP_IMM_REG);
1041 
 
1042 
  return 4;
1043 
}
1044 
 
1045 
/* satsubr reg,reg */
1046 
int
1047 
OP_80 ()
1048 
{
1049 
  unsigned int op0, op1, result, z, s, cy, ov, sat;
1050 
 
1051 
  trace_input ("satsubr", OP_REG_REG, 0);
1052 
 
1053 
  /* Compute the result.  */
1054 
  op0 = State.regs[ OP[0] ];
1055 
  op1 = State.regs[ OP[1] ];
1056 
  result = op0 - op1;
1057 
 
1058 
  /* Compute the condition codes.  */
1059 
  z = (result == 0);
1060 
  s = (result & 0x80000000);
1061 
  cy = (op0 < op1);
1062 
  ov = ((op0 & 0x80000000) != (op1 & 0x80000000)
1063 
        && (op0 & 0x80000000) != (result & 0x80000000));
1064 
  sat = ov;
1065 
 
1066 
  /* Handle saturated results.  */
1067 
  if (sat && s)
1068 
    {
1069 
      /* An overflow that results in a negative result implies that we
1070 
         became too positive.  */
1071 
      result = 0x7fffffff;
1072 
      s = 0;
1073 
    }
1074 
  else if (sat)
1075 
    {
1076 
      /* Any other overflow must have thus been too negative.  */
1077 
      result = 0x80000000;
1078 
      s = 1;
1079 
      z = 0;
1080 
    }
1081 
 
1082 
  /* Store the result and condition codes.  */
1083 
  State.regs[OP[1]] = result;
1084 
  PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV);
1085 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1086 
          | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0)
1087 
          | (sat ? PSW_SAT : 0));
1088 
 
1089 
  trace_output (OP_REG_REG);
1090 
 
1091 
  return 2;
1092 
}
1093 
 
1094 
/* tst reg,reg */
1095 
int
1096 
OP_160 ()
1097 
{
1098 
  unsigned int op0, op1, result, z, s;
1099 
 
1100 
  trace_input ("tst", OP_REG_REG_CMP, 0);
1101 
 
1102 
  /* Compute the result.  */
1103 
  op0 = State.regs[ OP[0] ];
1104 
  op1 = State.regs[ OP[1] ];
1105 
  result = op0 & op1;
1106 
 
1107 
  /* Compute the condition codes.  */
1108 
  z = (result == 0);
1109 
  s = (result & 0x80000000);
1110 
 
1111 
  /* Store the condition codes.  */
1112 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1113 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1114 
  trace_output (OP_REG_REG_CMP);
1115 
 
1116 
  return 2;
1117 
}
1118 
 
1119 
/* mov sign_extend(imm5), reg */
1120 
int
1121 
OP_200 ()
1122 
{
1123 
  int value = SEXT5 (OP[0]);
1124 
 
1125 
  trace_input ("mov", OP_IMM_REG_MOVE, 0);
1126 
 
1127 
  State.regs[ OP[1] ] = value;
1128 
 
1129 
  trace_output (OP_IMM_REG_MOVE);
1130 
 
1131 
  return 2;
1132 
}
1133 
 
1134 
/* movhi imm16, reg, reg */
1135 
int
1136 
OP_640 ()
1137 
{
1138 
  trace_input ("movhi", OP_UIMM16_REG_REG, 16);
1139 
 
1140 
  State.regs[ OP[1] ] = State.regs[ OP[0] ] + (OP[2] << 16);
1141 
 
1142 
  trace_output (OP_UIMM16_REG_REG);
1143 
 
1144 
  return 4;
1145 
}
1146 
 
1147 
/* sar zero_extend(imm5),reg1 */
1148 
int
1149 
OP_2A0 ()
1150 
{
1151 
  unsigned int op0, op1, result, z, s, cy;
1152 
 
1153 
  trace_input ("sar", OP_IMM_REG, 0);
1154 
  op0 = OP[0];
1155 
  op1 = State.regs[ OP[1] ];
1156 
  result = (signed)op1 >> op0;
1157 
 
1158 
  /* Compute the condition codes.  */
1159 
  z = (result == 0);
1160 
  s = (result & 0x80000000);
1161 
  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
1162 
 
1163 
  /* Store the result and condition codes.  */
1164 
  State.regs[ OP[1] ] = result;
1165 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1166 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1167 
                | (cy ? PSW_CY : 0));
1168 
  trace_output (OP_IMM_REG);
1169 
 
1170 
  return 2;
1171 
}
1172 
 
1173 
/* sar reg1, reg2 */
1174 
int
1175 
OP_A007E0 ()
1176 
{
1177 
  unsigned int op0, op1, result, z, s, cy;
1178 
 
1179 
  trace_input ("sar", OP_REG_REG, 0);
1180 
 
1181 
  op0 = State.regs[ OP[0] ] & 0x1f;
1182 
  op1 = State.regs[ OP[1] ];
1183 
  result = (signed)op1 >> op0;
1184 
 
1185 
  /* Compute the condition codes.  */
1186 
  z = (result == 0);
1187 
  s = (result & 0x80000000);
1188 
  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
1189 
 
1190 
  /* Store the result and condition codes.  */
1191 
  State.regs[OP[1]] = result;
1192 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1193 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1194 
                | (cy ? PSW_CY : 0));
1195 
  trace_output (OP_REG_REG);
1196 
 
1197 
  return 4;
1198 
}
1199 
 
1200 
/* shl zero_extend(imm5),reg1 */
1201 
int
1202 
OP_2C0 ()
1203 
{
1204 
  unsigned int op0, op1, result, z, s, cy;
1205 
 
1206 
  trace_input ("shl", OP_IMM_REG, 0);
1207 
  op0 = OP[0];
1208 
  op1 = State.regs[ OP[1] ];
1209 
  result = op1 << op0;
1210 
 
1211 
  /* Compute the condition codes.  */
1212 
  z = (result == 0);
1213 
  s = (result & 0x80000000);
1214 
  cy = op0 ? (op1 & (1 << (32 - op0))) : 0;
1215 
 
1216 
  /* Store the result and condition codes.  */
1217 
  State.regs[OP[1]] = result;
1218 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1219 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1220 
                | (cy ? PSW_CY : 0));
1221 
  trace_output (OP_IMM_REG);
1222 
 
1223 
  return 2;
1224 
}
1225 
 
1226 
/* shl reg1, reg2 */
1227 
int
1228 
OP_C007E0 ()
1229 
{
1230 
  unsigned int op0, op1, result, z, s, cy;
1231 
 
1232 
  trace_input ("shl", OP_REG_REG, 0);
1233 
  op0 = State.regs[ OP[0] ] & 0x1f;
1234 
  op1 = State.regs[ OP[1] ];
1235 
  result = op1 << op0;
1236 
 
1237 
  /* Compute the condition codes.  */
1238 
  z = (result == 0);
1239 
  s = (result & 0x80000000);
1240 
  cy = op0 ? (op1 & (1 << (32 - op0))) : 0;
1241 
 
1242 
  /* Store the result and condition codes.  */
1243 
  State.regs[OP[1]] = result;
1244 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1245 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1246 
                | (cy ? PSW_CY : 0));
1247 
  trace_output (OP_REG_REG);
1248 
 
1249 
  return 4;
1250 
}
1251 
 
1252 
/* shr zero_extend(imm5),reg1 */
1253 
int
1254 
OP_280 ()
1255 
{
1256 
  unsigned int op0, op1, result, z, s, cy;
1257 
 
1258 
  trace_input ("shr", OP_IMM_REG, 0);
1259 
  op0 = OP[0];
1260 
  op1 = State.regs[ OP[1] ];
1261 
  result = op1 >> op0;
1262 
 
1263 
  /* Compute the condition codes.  */
1264 
  z = (result == 0);
1265 
  s = (result & 0x80000000);
1266 
  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
1267 
 
1268 
  /* Store the result and condition codes.  */
1269 
  State.regs[OP[1]] = result;
1270 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1271 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1272 
                | (cy ? PSW_CY : 0));
1273 
  trace_output (OP_IMM_REG);
1274 
 
1275 
  return 2;
1276 
}
1277 
 
1278 
/* shr reg1, reg2 */
1279 
int
1280 
OP_8007E0 ()
1281 
{
1282 
  unsigned int op0, op1, result, z, s, cy;
1283 
 
1284 
  trace_input ("shr", OP_REG_REG, 0);
1285 
  op0 = State.regs[ OP[0] ] & 0x1f;
1286 
  op1 = State.regs[ OP[1] ];
1287 
  result = op1 >> op0;
1288 
 
1289 
  /* Compute the condition codes.  */
1290 
  z = (result == 0);
1291 
  s = (result & 0x80000000);
1292 
  cy = op0 ? (op1 & (1 << (op0 - 1))) : 0;
1293 
 
1294 
  /* Store the result and condition codes.  */
1295 
  State.regs[OP[1]] = result;
1296 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY);
1297 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)
1298 
                | (cy ? PSW_CY : 0));
1299 
  trace_output (OP_REG_REG);
1300 
 
1301 
  return 4;
1302 
}
1303 
 
1304 
/* or reg, reg */
1305 
int
1306 
OP_100 ()
1307 
{
1308 
  unsigned int op0, op1, result, z, s;
1309 
 
1310 
  trace_input ("or", OP_REG_REG, 0);
1311 
 
1312 
  /* Compute the result.  */
1313 
  op0 = State.regs[ OP[0] ];
1314 
  op1 = State.regs[ OP[1] ];
1315 
  result = op0 | op1;
1316 
 
1317 
  /* Compute the condition codes.  */
1318 
  z = (result == 0);
1319 
  s = (result & 0x80000000);
1320 
 
1321 
  /* Store the result and condition codes.  */
1322 
  State.regs[OP[1]] = result;
1323 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1324 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1325 
  trace_output (OP_REG_REG);
1326 
 
1327 
  return 2;
1328 
}
1329 
 
1330 
/* ori zero_extend(imm16), reg, reg */
1331 
int
1332 
OP_680 ()
1333 
{
1334 
  unsigned int op0, op1, result, z, s;
1335 
 
1336 
  trace_input ("ori", OP_UIMM16_REG_REG, 0);
1337 
  op0 = OP[2];
1338 
  op1 = State.regs[ OP[0] ];
1339 
  result = op0 | op1;
1340 
 
1341 
  /* Compute the condition codes.  */
1342 
  z = (result == 0);
1343 
  s = (result & 0x80000000);
1344 
 
1345 
  /* Store the result and condition codes.  */
1346 
  State.regs[OP[1]] = result;
1347 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1348 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1349 
  trace_output (OP_UIMM16_REG_REG);
1350 
 
1351 
  return 4;
1352 
}
1353 
 
1354 
/* and reg, reg */
1355 
int
1356 
OP_140 ()
1357 
{
1358 
  unsigned int op0, op1, result, z, s;
1359 
 
1360 
  trace_input ("and", OP_REG_REG, 0);
1361 
 
1362 
  /* Compute the result.  */
1363 
  op0 = State.regs[ OP[0] ];
1364 
  op1 = State.regs[ OP[1] ];
1365 
  result = op0 & op1;
1366 
 
1367 
  /* Compute the condition codes.  */
1368 
  z = (result == 0);
1369 
  s = (result & 0x80000000);
1370 
 
1371 
  /* Store the result and condition codes.  */
1372 
  State.regs[OP[1]] = result;
1373 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1374 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1375 
  trace_output (OP_REG_REG);
1376 
 
1377 
  return 2;
1378 
}
1379 
 
1380 
/* andi zero_extend(imm16), reg, reg */
1381 
int
1382 
OP_6C0 ()
1383 
{
1384 
  unsigned int result, z;
1385 
 
1386 
  trace_input ("andi", OP_UIMM16_REG_REG, 0);
1387 
 
1388 
  result = OP[2] & State.regs[ OP[0] ];
1389 
 
1390 
  /* Compute the condition codes.  */
1391 
  z = (result == 0);
1392 
 
1393 
  /* Store the result and condition codes.  */
1394 
  State.regs[ OP[1] ] = result;
1395 
 
1396 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1397 
  PSW |= (z ? PSW_Z : 0);
1398 
 
1399 
  trace_output (OP_UIMM16_REG_REG);
1400 
 
1401 
  return 4;
1402 
}
1403 
 
1404 
/* xor reg, reg */
1405 
int
1406 
OP_120 ()
1407 
{
1408 
  unsigned int op0, op1, result, z, s;
1409 
 
1410 
  trace_input ("xor", OP_REG_REG, 0);
1411 
 
1412 
  /* Compute the result.  */
1413 
  op0 = State.regs[ OP[0] ];
1414 
  op1 = State.regs[ OP[1] ];
1415 
  result = op0 ^ op1;
1416 
 
1417 
  /* Compute the condition codes.  */
1418 
  z = (result == 0);
1419 
  s = (result & 0x80000000);
1420 
 
1421 
  /* Store the result and condition codes.  */
1422 
  State.regs[OP[1]] = result;
1423 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1424 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1425 
  trace_output (OP_REG_REG);
1426 
 
1427 
  return 2;
1428 
}
1429 
 
1430 
/* xori zero_extend(imm16), reg, reg */
1431 
int
1432 
OP_6A0 ()
1433 
{
1434 
  unsigned int op0, op1, result, z, s;
1435 
 
1436 
  trace_input ("xori", OP_UIMM16_REG_REG, 0);
1437 
  op0 = OP[2];
1438 
  op1 = State.regs[ OP[0] ];
1439 
  result = op0 ^ op1;
1440 
 
1441 
  /* Compute the condition codes.  */
1442 
  z = (result == 0);
1443 
  s = (result & 0x80000000);
1444 
 
1445 
  /* Store the result and condition codes.  */
1446 
  State.regs[OP[1]] = result;
1447 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1448 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1449 
  trace_output (OP_UIMM16_REG_REG);
1450 
 
1451 
  return 4;
1452 
}
1453 
 
1454 
/* not reg1, reg2 */
1455 
int
1456 
OP_20 ()
1457 
{
1458 
  unsigned int op0, result, z, s;
1459 
 
1460 
  trace_input ("not", OP_REG_REG_MOVE, 0);
1461 
  /* Compute the result.  */
1462 
  op0 = State.regs[ OP[0] ];
1463 
  result = ~op0;
1464 
 
1465 
  /* Compute the condition codes.  */
1466 
  z = (result == 0);
1467 
  s = (result & 0x80000000);
1468 
 
1469 
  /* Store the result and condition codes.  */
1470 
  State.regs[OP[1]] = result;
1471 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
1472 
  PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0));
1473 
  trace_output (OP_REG_REG_MOVE);
1474 
 
1475 
  return 2;
1476 
}
1477 
 
1478 
/* set1 */
1479 
int
1480 
OP_7C0 ()
1481 
{
1482 
  unsigned int op0, op1, op2;
1483 
  int temp;
1484 
 
1485 
  trace_input ("set1", OP_BIT, 0);
1486 
  op0 = State.regs[ OP[0] ];
1487 
  op1 = OP[1] & 0x7;
1488 
  temp = EXTEND16 (OP[2]);
1489 
  op2 = temp;
1490 
  temp = load_mem (op0 + op2, 1);
1491 
  PSW &= ~PSW_Z;
1492 
  if ((temp & (1 << op1)) == 0)
1493 
    PSW |= PSW_Z;
1494 
  temp |= (1 << op1);
1495 
  store_mem (op0 + op2, 1, temp);
1496 
  trace_output (OP_BIT);
1497 
 
1498 
  return 4;
1499 
}
1500 
 
1501 
/* not1 */
1502 
int
1503 
OP_47C0 ()
1504 
{
1505 
  unsigned int op0, op1, op2;
1506 
  int temp;
1507 
 
1508 
  trace_input ("not1", OP_BIT, 0);
1509 
  op0 = State.regs[ OP[0] ];
1510 
  op1 = OP[1] & 0x7;
1511 
  temp = EXTEND16 (OP[2]);
1512 
  op2 = temp;
1513 
  temp = load_mem (op0 + op2, 1);
1514 
  PSW &= ~PSW_Z;
1515 
  if ((temp & (1 << op1)) == 0)
1516 
    PSW |= PSW_Z;
1517 
  temp ^= (1 << op1);
1518 
  store_mem (op0 + op2, 1, temp);
1519 
  trace_output (OP_BIT);
1520 
 
1521 
  return 4;
1522 
}
1523 
 
1524 
/* clr1 */
1525 
int
1526 
OP_87C0 ()
1527 
{
1528 
  unsigned int op0, op1, op2;
1529 
  int temp;
1530 
 
1531 
  trace_input ("clr1", OP_BIT, 0);
1532 
  op0 = State.regs[ OP[0] ];
1533 
  op1 = OP[1] & 0x7;
1534 
  temp = EXTEND16 (OP[2]);
1535 
  op2 = temp;
1536 
  temp = load_mem (op0 + op2, 1);
1537 
  PSW &= ~PSW_Z;
1538 
  if ((temp & (1 << op1)) == 0)
1539 
    PSW |= PSW_Z;
1540 
  temp &= ~(1 << op1);
1541 
  store_mem (op0 + op2, 1, temp);
1542 
  trace_output (OP_BIT);
1543 
 
1544 
  return 4;
1545 
}
1546 
 
1547 
/* tst1 */
1548 
int
1549 
OP_C7C0 ()
1550 
{
1551 
  unsigned int op0, op1, op2;
1552 
  int temp;
1553 
 
1554 
  trace_input ("tst1", OP_BIT, 0);
1555 
  op0 = State.regs[ OP[0] ];
1556 
  op1 = OP[1] & 0x7;
1557 
  temp = EXTEND16 (OP[2]);
1558 
  op2 = temp;
1559 
  temp = load_mem (op0 + op2, 1);
1560 
  PSW &= ~PSW_Z;
1561 
  if ((temp & (1 << op1)) == 0)
1562 
    PSW |= PSW_Z;
1563 
  trace_output (OP_BIT);
1564 
 
1565 
  return 4;
1566 
}
1567 
 
1568 
/* di */
1569 
int
1570 
OP_16007E0 ()
1571 
{
1572 
  trace_input ("di", OP_NONE, 0);
1573 
  PSW |= PSW_ID;
1574 
  trace_output (OP_NONE);
1575 
 
1576 
  return 4;
1577 
}
1578 
 
1579 
/* ei */
1580 
int
1581 
OP_16087E0 ()
1582 
{
1583 
  trace_input ("ei", OP_NONE, 0);
1584 
  PSW &= ~PSW_ID;
1585 
  trace_output (OP_NONE);
1586 
 
1587 
  return 4;
1588 
}
1589 
 
1590 
/* halt */
1591 
int
1592 
OP_12007E0 ()
1593 
{
1594 
  trace_input ("halt", OP_NONE, 0);
1595 
  /* FIXME this should put processor into a mode where NMI still handled */
1596 
  trace_output (OP_NONE);
1597 
  sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
1598 
                   sim_stopped, SIM_SIGTRAP);
1599 
  return 0;
1600 
}
1601 
 
1602 
/* trap */
1603 
int
1604 
OP_10007E0 ()
1605 
{
1606 
  trace_input ("trap", OP_TRAP, 0);
1607 
  trace_output (OP_TRAP);
1608 
 
1609 
  /* Trap 31 is used for simulating OS I/O functions */
1610 
 
1611 
  if (OP[0] == 31)
1612 
    {
1613 
      int save_errno = errno;
1614 
      errno = 0;
1615 
 
1616 
/* Registers passed to trap 0 */
1617 
 
1618 
#define FUNC   State.regs[6]    /* function number, return value */
1619 
#define PARM1  State.regs[7]    /* optional parm 1 */
1620 
#define PARM2  State.regs[8]    /* optional parm 2 */
1621 
#define PARM3  State.regs[9]    /* optional parm 3 */
1622 
 
1623 
/* Registers set by trap 0 */
1624 
 
1625 
#define RETVAL State.regs[10]   /* return value */
1626 
#define RETERR State.regs[11]   /* return error code */
1627 
 
1628 
/* Turn a pointer in a register into a pointer into real memory. */
1629 
 
1630 
#define MEMPTR(x) (map (x))
1631 
 
1632 
      switch (FUNC)
1633 
        {
1634 
 
1635 
#ifdef HAVE_FORK
1636 
#ifdef TARGET_SYS_fork
1637 
        case TARGET_SYS_fork:
1638 
          RETVAL = fork ();
1639 
          break;
1640 
#endif
1641 
#endif
1642 
 
1643 
#ifdef HAVE_EXECVE
1644 
#ifdef TARGET_SYS_execv
1645 
        case TARGET_SYS_execve:
1646 
          {
1647 
            char *path = fetch_str (simulator, PARM1);
1648 
            char **argv = fetch_argv (simulator, PARM2);
1649 
            char **envp = fetch_argv (simulator, PARM3);
1650 
            RETVAL = execve (path, argv, envp);
1651 
            zfree (path);
1652 
            freeargv (argv);
1653 
            freeargv (envp);
1654 
            break;
1655 
          }
1656 
#endif
1657 
#endif
1658 
 
1659 
#if HAVE_EXECV
1660 
#ifdef TARGET_SYS_execv
1661 
        case TARGET_SYS_execv:
1662 
          {
1663 
            char *path = fetch_str (simulator, PARM1);
1664 
            char **argv = fetch_argv (simulator, PARM2);
1665 
            RETVAL = execv (path, argv);
1666 
            zfree (path);
1667 
            freeargv (argv);
1668 
            break;
1669 
          }
1670 
#endif
1671 
#endif
1672 
 
1673 
#if 0
1674 
#ifdef TARGET_SYS_pipe
1675 
        case TARGET_SYS_pipe:
1676 
          {
1677 
            reg_t buf;
1678 
            int host_fd[2];
1679 
 
1680 
            buf = PARM1;
1681 
            RETVAL = pipe (host_fd);
1682 
            SW (buf, host_fd[0]);
1683 
            buf += sizeof(uint16);
1684 
            SW (buf, host_fd[1]);
1685 
          }
1686 
          break;
1687 
#endif
1688 
#endif
1689 
 
1690 
#if 0
1691 
#ifdef TARGET_SYS_wait
1692 
        case TARGET_SYS_wait:
1693 
          {
1694 
            int status;
1695 
 
1696 
            RETVAL = wait (&status);
1697 
            SW (PARM1, status);
1698 
          }
1699 
          break;
1700 
#endif
1701 
#endif
1702 
 
1703 
#ifdef TARGET_SYS_read
1704 
        case TARGET_SYS_read:
1705 
          {
1706 
            char *buf = zalloc (PARM3);
1707 
            RETVAL = sim_io_read (simulator, PARM1, buf, PARM3);
1708 
            sim_write (simulator, PARM2, buf, PARM3);
1709 
            zfree (buf);
1710 
            break;
1711 
          }
1712 
#endif
1713 
 
1714 
#ifdef TARGET_SYS_write
1715 
        case TARGET_SYS_write:
1716 
          {
1717 
            char *buf = zalloc (PARM3);
1718 
            sim_read (simulator, PARM2, buf, PARM3);
1719 
            if (PARM1 == 1)
1720 
              RETVAL = sim_io_write_stdout (simulator, buf, PARM3);
1721 
            else
1722 
              RETVAL = sim_io_write (simulator, PARM1, buf, PARM3);
1723 
            zfree (buf);
1724 
            break;
1725 
          }
1726 
#endif
1727 
 
1728 
#ifdef TARGET_SYS_lseek
1729 
        case TARGET_SYS_lseek:
1730 
          RETVAL = sim_io_lseek (simulator, PARM1, PARM2, PARM3);
1731 
          break;
1732 
#endif
1733 
 
1734 
#ifdef TARGET_SYS_close
1735 
        case TARGET_SYS_close:
1736 
          RETVAL = sim_io_close (simulator, PARM1);
1737 
          break;
1738 
#endif
1739 
 
1740 
#ifdef TARGET_SYS_open
1741 
        case TARGET_SYS_open:
1742 
          {
1743 
            char *buf = fetch_str (simulator, PARM1);
1744 
            RETVAL = sim_io_open (simulator, buf, PARM2);
1745 
            zfree (buf);
1746 
            break;
1747 
          }
1748 
#endif
1749 
 
1750 
#ifdef TARGET_SYS_exit
1751 
        case TARGET_SYS_exit:
1752 
          if ((PARM1 & 0xffff0000) == 0xdead0000 && (PARM1 & 0xffff) != 0)
1753 
            /* get signal encoded by kill */
1754 
            sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
1755 
                             sim_signalled, PARM1 & 0xffff);
1756 
          else if (PARM1 == 0xdead)
1757 
            /* old libraries */
1758 
            sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
1759 
                             sim_stopped, SIM_SIGABRT);
1760 
          else
1761 
            /* PARM1 has exit status */
1762 
            sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
1763 
                             sim_exited, PARM1);
1764 
          break;
1765 
#endif
1766 
 
1767 
#if !defined(__GO32__) && !defined(_WIN32)
1768 
#ifdef TARGET_SYS_stat
1769 
        case TARGET_SYS_stat:   /* added at hmsi */
1770 
          /* stat system call */
1771 
          {
1772 
            struct stat host_stat;
1773 
            reg_t buf;
1774 
            char *path = fetch_str (simulator, PARM1);
1775 
 
1776 
            RETVAL = stat (path, &host_stat);
1777 
 
1778 
            zfree (path);
1779 
            buf = PARM2;
1780 
 
1781 
            /* Just wild-assed guesses.  */
1782 
            store_mem (buf, 2, host_stat.st_dev);
1783 
            store_mem (buf + 2, 2, host_stat.st_ino);
1784 
            store_mem (buf + 4, 4, host_stat.st_mode);
1785 
            store_mem (buf + 8, 2, host_stat.st_nlink);
1786 
            store_mem (buf + 10, 2, host_stat.st_uid);
1787 
            store_mem (buf + 12, 2, host_stat.st_gid);
1788 
            store_mem (buf + 14, 2, host_stat.st_rdev);
1789 
            store_mem (buf + 16, 4, host_stat.st_size);
1790 
            store_mem (buf + 20, 4, host_stat.st_atime);
1791 
            store_mem (buf + 28, 4, host_stat.st_mtime);
1792 
            store_mem (buf + 36, 4, host_stat.st_ctime);
1793 
          }
1794 
          break;
1795 
#endif
1796 
#endif
1797 
 
1798 
#ifdef HAVE_CHOWN
1799 
#ifdef TARGET_SYS_chown
1800 
        case TARGET_SYS_chown:
1801 
          {
1802 
            char *path = fetch_str (simulator, PARM1);
1803 
            RETVAL = chown (path, PARM2, PARM3);
1804 
            zfree (path);
1805 
          }
1806 
          break;
1807 
#endif
1808 
#endif
1809 
 
1810 
#if HAVE_CHMOD
1811 
#ifdef TARGET_SYS_chmod
1812 
        case TARGET_SYS_chmod:
1813 
          {
1814 
            char *path = fetch_str (simulator, PARM1);
1815 
            RETVAL = chmod (path, PARM2);
1816 
            zfree (path);
1817 
          }
1818 
          break;
1819 
#endif
1820 
#endif
1821 
 
1822 
#ifdef TARGET_SYS_time
1823 
#if HAVE_TIME
1824 
        case TARGET_SYS_time:
1825 
          {
1826 
            time_t now;
1827 
            RETVAL = time (&now);
1828 
            store_mem (PARM1, 4, now);
1829 
          }
1830 
          break;
1831 
#endif
1832 
#endif
1833 
 
1834 
#if !defined(__GO32__) && !defined(_WIN32)
1835 
#ifdef TARGET_SYS_times
1836 
        case TARGET_SYS_times:
1837 
          {
1838 
            struct tms tms;
1839 
            RETVAL = times (&tms);
1840 
            store_mem (PARM1, 4, tms.tms_utime);
1841 
            store_mem (PARM1 + 4, 4, tms.tms_stime);
1842 
            store_mem (PARM1 + 8, 4, tms.tms_cutime);
1843 
            store_mem (PARM1 + 12, 4, tms.tms_cstime);
1844 
            break;
1845 
          }
1846 
#endif
1847 
#endif
1848 
 
1849 
#ifdef TARGET_SYS_gettimeofday
1850 
#if !defined(__GO32__) && !defined(_WIN32)
1851 
        case TARGET_SYS_gettimeofday:
1852 
          {
1853 
            struct timeval t;
1854 
            struct timezone tz;
1855 
            RETVAL = gettimeofday (&t, &tz);
1856 
            store_mem (PARM1, 4, t.tv_sec);
1857 
            store_mem (PARM1 + 4, 4, t.tv_usec);
1858 
            store_mem (PARM2, 4, tz.tz_minuteswest);
1859 
            store_mem (PARM2 + 4, 4, tz.tz_dsttime);
1860 
            break;
1861 
          }
1862 
#endif
1863 
#endif
1864 
 
1865 
#ifdef TARGET_SYS_utime
1866 
#if HAVE_UTIME
1867 
        case TARGET_SYS_utime:
1868 
          {
1869 
            /* Cast the second argument to void *, to avoid type mismatch
1870 
               if a prototype is present.  */
1871 
            sim_io_error (simulator, "Utime not supported");
1872 
            /* RETVAL = utime (path, (void *) MEMPTR (PARM2)); */
1873 
          }
1874 
          break;
1875 
#endif
1876 
#endif
1877 
 
1878 
        default:
1879 
          abort ();
1880 
        }
1881 
      RETERR = errno;
1882 
      errno = save_errno;
1883 
 
1884 
      return 4;
1885 
    }
1886 
  else
1887 
    {                           /* Trap 0 -> 30 */
1888 
      EIPC = PC + 4;
1889 
      EIPSW = PSW;
1890 
      /* Mask out EICC */
1891 
      ECR &= 0xffff0000;
1892 
      ECR |= 0x40 + OP[0];
1893 
      /* Flag that we are now doing exception processing.  */
1894 
      PSW |= PSW_EP | PSW_ID;
1895 
      PC = (OP[0] < 0x10) ? 0x40 : 0x50;
1896 
 
1897 
      return 0;
1898 
    }
1899 
}
1900 
 
1901 
/* tst1 reg2, [reg1] */
1902 
int
1903 
OP_E607E0 (void)
1904 
{
1905 
  int temp;
1906 
 
1907 
  trace_input ("tst1", OP_BIT, 1);
1908 
 
1909 
  temp = load_mem (State.regs[ OP[0] ], 1);
1910 
 
1911 
  PSW &= ~PSW_Z;
1912 
  if ((temp & (1 << (State.regs[ OP[1] ] & 0x7))) == 0)
1913 
    PSW |= PSW_Z;
1914 
 
1915 
  trace_output (OP_BIT);
1916 
 
1917 
  return 4;
1918 
}
1919 
 
1920 
/* mulu reg1, reg2, reg3 */
1921 
int
1922 
OP_22207E0 (void)
1923 
{
1924 
  trace_input ("mulu", OP_REG_REG_REG, 0);
1925 
 
1926 
  Multiply64 (0, State.regs[ OP[0] ]);
1927 
 
1928 
  trace_output (OP_REG_REG_REG);
1929 
 
1930 
  return 4;
1931 
}
1932 
 
1933 
#define BIT_CHANGE_OP( name, binop )            \
1934 
  unsigned int bit;                             \
1935 
  unsigned int temp;                            \
1936 
                                                \
1937 
  trace_input (name, OP_BIT_CHANGE, 0);          \
1938 
                                                \
1939 
  bit  = 1 << (State.regs[ OP[1] ] & 0x7);      \
1940 
  temp = load_mem (State.regs[ OP[0] ], 1);      \
1941 
                                                \
1942 
  PSW &= ~PSW_Z;                                \
1943 
  if ((temp & bit) == 0)                 \
1944 
    PSW |= PSW_Z;                               \
1945 
  temp binop bit;                               \
1946 
                                                \
1947 
  store_mem (State.regs[ OP[0] ], 1, temp);      \
1948 
                                                \
1949 
  trace_output (OP_BIT_CHANGE);                 \
1950 
                                                \
1951 
  return 4;
1952 
 
1953 
/* clr1 reg2, [reg1] */
1954 
int
1955 
OP_E407E0 (void)
1956 
{
1957 
  BIT_CHANGE_OP ("clr1", &= ~ );
1958 
}
1959 
 
1960 
/* not1 reg2, [reg1] */
1961 
int
1962 
OP_E207E0 (void)
1963 
{
1964 
  BIT_CHANGE_OP ("not1", ^= );
1965 
}
1966 
 
1967 
/* set1 */
1968 
int
1969 
OP_E007E0 (void)
1970 
{
1971 
  BIT_CHANGE_OP ("set1", |= );
1972 
}
1973 
 
1974 
/* sasf */
1975 
int
1976 
OP_20007E0 (void)
1977 
{
1978 
  trace_input ("sasf", OP_EX1, 0);
1979 
 
1980 
  State.regs[ OP[1] ] = (State.regs[ OP[1] ] << 1) | condition_met (OP[0]);
1981 
 
1982 
  trace_output (OP_EX1);
1983 
 
1984 
  return 4;
1985 
}
1986 
 
1987 
/* This function is courtesy of Sugimoto at NEC, via Seow Tan
1988 
   (Soew_Tan@el.nec.com) */
1989 
void
1990 
divun
1991 
(
1992 
  unsigned int       N,
1993 
  unsigned long int  als,
1994 
  unsigned long int  sfi,
1995 
  unsigned32 /*unsigned long int*/ *  quotient_ptr,
1996 
  unsigned32 /*unsigned long int*/ *  remainder_ptr,
1997 
  int *          overflow_ptr
1998 
)
1999 
{
2000 
  unsigned long   ald = sfi >> (N - 1);
2001 
  unsigned long   alo = als;
2002 
  unsigned int    Q   = 1;
2003 
  unsigned int    C;
2004 
  unsigned int    S   = 0;
2005 
  unsigned int    i;
2006 
  unsigned int    R1  = 1;
2007 
  unsigned int    DBZ = (als == 0) ? 1 : 0;
2008 
  unsigned long   alt = Q ? ~als : als;
2009 
 
2010 
  /* 1st Loop */
2011 
  alo = ald + alt + Q;
2012 
  C   = (((alt >> 31) & (ald >> 31))
2013 
         | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2014 
  C   = C ^ Q;
2015 
  Q   = ~(C ^ S) & 1;
2016 
  R1  = (alo == 0) ? 0 : (R1 & Q);
2017 
  if ((S ^ (alo>>31)) && !C)
2018 
    {
2019 
      DBZ = 1;
2020 
    }
2021 
  S   = alo >> 31;
2022 
  sfi = (sfi << (32-N+1)) | Q;
2023 
  ald = (alo << 1) | (sfi >> 31);
2024 
 
2025 
  /* 2nd - N-1th Loop */
2026 
  for (i = 2; i < N; i++)
2027 
    {
2028 
      alt = Q ? ~als : als;
2029 
      alo = ald + alt + Q;
2030 
      C   = (((alt >> 31) & (ald >> 31))
2031 
             | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2032 
      C   = C ^ Q;
2033 
      Q   = ~(C ^ S) & 1;
2034 
      R1  = (alo == 0) ? 0 : (R1 & Q);
2035 
      if ((S ^ (alo>>31)) && !C && !DBZ)
2036 
        {
2037 
          DBZ = 1;
2038 
        }
2039 
      S   = alo >> 31;
2040 
      sfi = (sfi << 1) | Q;
2041 
      ald = (alo << 1) | (sfi >> 31);
2042 
    }
2043 
 
2044 
  /* Nth Loop */
2045 
  alt = Q ? ~als : als;
2046 
  alo = ald + alt + Q;
2047 
  C   = (((alt >> 31) & (ald >> 31))
2048 
         | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2049 
  C   = C ^ Q;
2050 
  Q   = ~(C ^ S) & 1;
2051 
  R1  = (alo == 0) ? 0 : (R1 & Q);
2052 
  if ((S ^ (alo>>31)) && !C)
2053 
    {
2054 
      DBZ = 1;
2055 
    }
2056 
 
2057 
  * quotient_ptr  = (sfi << 1) | Q;
2058 
  * remainder_ptr = Q ? alo : (alo + als);
2059 
  * overflow_ptr  = DBZ | R1;
2060 
}
2061 
 
2062 
/* This function is courtesy of Sugimoto at NEC, via Seow Tan (Soew_Tan@el.nec.com) */
2063 
void
2064 
divn
2065 
(
2066 
  unsigned int       N,
2067 
  unsigned long int  als,
2068 
  unsigned long int  sfi,
2069 
  signed32 /*signed long int*/ *  quotient_ptr,
2070 
  signed32 /*signed long int*/ *  remainder_ptr,
2071 
  int *          overflow_ptr
2072 
)
2073 
{
2074 
  unsigned long   ald = (signed long) sfi >> (N - 1);
2075 
  unsigned long   alo = als;
2076 
  unsigned int    SS  = als >> 31;
2077 
  unsigned int    SD  = sfi >> 31;
2078 
  unsigned int    R1  = 1;
2079 
  unsigned int    OV;
2080 
  unsigned int    DBZ = als == 0 ? 1 : 0;
2081 
  unsigned int    Q   = ~(SS ^ SD) & 1;
2082 
  unsigned int    C;
2083 
  unsigned int    S;
2084 
  unsigned int    i;
2085 
  unsigned long   alt = Q ? ~als : als;
2086 
 
2087 
 
2088 
  /* 1st Loop */
2089 
 
2090 
  alo = ald + alt + Q;
2091 
  C   = (((alt >> 31) & (ald >> 31))
2092 
         | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2093 
  Q   = C ^ SS;
2094 
  R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
2095 
  S   = alo >> 31;
2096 
  sfi = (sfi << (32-N+1)) | Q;
2097 
  ald = (alo << 1) | (sfi >> 31);
2098 
  if ((alo >> 31) ^ (ald >> 31))
2099 
    {
2100 
      DBZ = 1;
2101 
    }
2102 
 
2103 
  /* 2nd - N-1th Loop */
2104 
 
2105 
  for (i = 2; i < N; i++)
2106 
    {
2107 
      alt = Q ? ~als : als;
2108 
      alo = ald + alt + Q;
2109 
      C   = (((alt >> 31) & (ald >> 31))
2110 
             | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2111 
      Q   = C ^ SS;
2112 
      R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
2113 
      S   = alo >> 31;
2114 
      sfi = (sfi << 1) | Q;
2115 
      ald = (alo << 1) | (sfi >> 31);
2116 
      if ((alo >> 31) ^ (ald >> 31))
2117 
        {
2118 
          DBZ = 1;
2119 
        }
2120 
    }
2121 
 
2122 
  /* Nth Loop */
2123 
  alt = Q ? ~als : als;
2124 
  alo = ald + alt + Q;
2125 
  C   = (((alt >> 31) & (ald >> 31))
2126 
         | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31)));
2127 
  Q   = C ^ SS;
2128 
  R1  = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD)));
2129 
  sfi = (sfi << (32-N+1));
2130 
  ald = alo;
2131 
 
2132 
  /* End */
2133 
  if (alo != 0)
2134 
    {
2135 
      alt = Q ? ~als : als;
2136 
      alo = ald + alt + Q;
2137 
    }
2138 
  R1  = R1 & ((~alo >> 31) ^ SD);
2139 
  if ((alo != 0) && ((Q ^ (SS ^ SD)) ^ R1)) alo = ald;
2140 
  if (N != 32)
2141 
    ald = sfi = (long) ((sfi >> 1) | (SS ^ SD) << 31) >> (32-N-1) | Q;
2142 
  else
2143 
    ald = sfi = sfi | Q;
2144 
 
2145 
  OV = DBZ | ((alo == 0) ? 0 : R1);
2146 
 
2147 
  * remainder_ptr = alo;
2148 
 
2149 
  /* Adj */
2150 
  if (((alo != 0) && ((SS ^ SD) ^ R1))
2151 
      || ((alo == 0) && (SS ^ R1)))
2152 
    alo = ald + 1;
2153 
  else
2154 
    alo = ald;
2155 
 
2156 
  OV  = (DBZ | R1) ? OV : ((alo >> 31) & (~ald >> 31));
2157 
 
2158 
  * quotient_ptr  = alo;
2159 
  * overflow_ptr  = OV;
2160 
}
2161 
 
2162 
/* sdivun imm5, reg1, reg2, reg3 */
2163 
int
2164 
OP_1C207E0 (void)
2165 
{
2166 
  unsigned32 /*unsigned long int*/  quotient;
2167 
  unsigned32 /*unsigned long int*/  remainder;
2168 
  unsigned long int  divide_by;
2169 
  unsigned long int  divide_this;
2170 
  int            overflow = 0;
2171 
  unsigned int       imm5;
2172 
 
2173 
  trace_input ("sdivun", OP_IMM_REG_REG_REG, 0);
2174 
 
2175 
  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);
2176 
 
2177 
  divide_by   = State.regs[ OP[0] ];
2178 
  divide_this = State.regs[ OP[1] ] << imm5;
2179 
 
2180 
  divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
2181 
 
2182 
  State.regs[ OP[1]       ] = quotient;
2183 
  State.regs[ OP[2] >> 11 ] = remainder;
2184 
 
2185 
  /* Set condition codes.  */
2186 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2187 
 
2188 
  if (overflow)      PSW |= PSW_OV;
2189 
  if (quotient == 0) PSW |= PSW_Z;
2190 
  if (quotient & 0x80000000) PSW |= PSW_S;
2191 
 
2192 
  trace_output (OP_IMM_REG_REG_REG);
2193 
 
2194 
  return 4;
2195 
}
2196 
 
2197 
/* sdivn imm5, reg1, reg2, reg3 */
2198 
int
2199 
OP_1C007E0 (void)
2200 
{
2201 
  signed32 /*signed long int*/  quotient;
2202 
  signed32 /*signed long int*/  remainder;
2203 
  signed long int  divide_by;
2204 
  signed long int  divide_this;
2205 
  int          overflow = 0;
2206 
  unsigned int     imm5;
2207 
 
2208 
  trace_input ("sdivn", OP_IMM_REG_REG_REG, 0);
2209 
 
2210 
  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);
2211 
 
2212 
  divide_by   = (signed32) State.regs[ OP[0] ];
2213 
  divide_this = (signed32) (State.regs[ OP[1] ] << imm5);
2214 
 
2215 
  divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
2216 
 
2217 
  State.regs[ OP[1]       ] = quotient;
2218 
  State.regs[ OP[2] >> 11 ] = remainder;
2219 
 
2220 
  /* Set condition codes.  */
2221 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2222 
 
2223 
  if (overflow)      PSW |= PSW_OV;
2224 
  if (quotient == 0) PSW |= PSW_Z;
2225 
  if (quotient <  0) PSW |= PSW_S;
2226 
 
2227 
  trace_output (OP_IMM_REG_REG_REG);
2228 
 
2229 
  return 4;
2230 
}
2231 
 
2232 
/* sdivhun imm5, reg1, reg2, reg3 */
2233 
int
2234 
OP_18207E0 (void)
2235 
{
2236 
  unsigned32 /*unsigned long int*/  quotient;
2237 
  unsigned32 /*unsigned long int*/  remainder;
2238 
  unsigned long int  divide_by;
2239 
  unsigned long int  divide_this;
2240 
  int            overflow = 0;
2241 
  unsigned int       imm5;
2242 
 
2243 
  trace_input ("sdivhun", OP_IMM_REG_REG_REG, 0);
2244 
 
2245 
  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);
2246 
 
2247 
  divide_by   = State.regs[ OP[0] ] & 0xffff;
2248 
  divide_this = State.regs[ OP[1] ] << imm5;
2249 
 
2250 
  divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
2251 
 
2252 
  State.regs[ OP[1]       ] = quotient;
2253 
  State.regs[ OP[2] >> 11 ] = remainder;
2254 
 
2255 
  /* Set condition codes.  */
2256 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2257 
 
2258 
  if (overflow)      PSW |= PSW_OV;
2259 
  if (quotient == 0) PSW |= PSW_Z;
2260 
  if (quotient & 0x80000000) PSW |= PSW_S;
2261 
 
2262 
  trace_output (OP_IMM_REG_REG_REG);
2263 
 
2264 
  return 4;
2265 
}
2266 
 
2267 
/* sdivhn imm5, reg1, reg2, reg3 */
2268 
int
2269 
OP_18007E0 (void)
2270 
{
2271 
  signed32 /*signed long int*/  quotient;
2272 
  signed32 /*signed long int*/  remainder;
2273 
  signed long int  divide_by;
2274 
  signed long int  divide_this;
2275 
  int          overflow = 0;
2276 
  unsigned int     imm5;
2277 
 
2278 
  trace_input ("sdivhn", OP_IMM_REG_REG_REG, 0);
2279 
 
2280 
  imm5 = 32 - ((OP[3] & 0x3c0000) >> 17);
2281 
 
2282 
  divide_by   = EXTEND16 (State.regs[ OP[0] ]);
2283 
  divide_this = (signed32) (State.regs[ OP[1] ] << imm5);
2284 
 
2285 
  divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow);
2286 
 
2287 
  State.regs[ OP[1]       ] = quotient;
2288 
  State.regs[ OP[2] >> 11 ] = remainder;
2289 
 
2290 
  /* Set condition codes.  */
2291 
  PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2292 
 
2293 
  if (overflow)      PSW |= PSW_OV;
2294 
  if (quotient == 0) PSW |= PSW_Z;
2295 
  if (quotient <  0) PSW |= PSW_S;
2296 
 
2297 
  trace_output (OP_IMM_REG_REG_REG);
2298 
 
2299 
  return 4;
2300 
}
2301 
 
2302 
/* divu  reg1, reg2, reg3 */
2303 
int
2304 
OP_2C207E0 (void)
2305 
{
2306 
  unsigned long int quotient;
2307 
  unsigned long int remainder;
2308 
  unsigned long int divide_by;
2309 
  unsigned long int divide_this;
2310 
  int           overflow = 0;
2311 
 
2312 
  trace_input ("divu", OP_REG_REG_REG, 0);
2313 
 
2314 
  /* Compute the result.  */
2315 
 
2316 
  divide_by   = State.regs[ OP[0] ];
2317 
  divide_this = State.regs[ OP[1] ];
2318 
 
2319 
  if (divide_by == 0)
2320 
    {
2321 
      PSW |= PSW_OV;
2322 
    }
2323 
  else
2324 
    {
2325 
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
2326 
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
2327 
 
2328 
      /* Set condition codes.  */
2329 
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2330 
 
2331 
      if (overflow)      PSW |= PSW_OV;
2332 
      if (quotient == 0) PSW |= PSW_Z;
2333 
      if (quotient & 0x80000000) PSW |= PSW_S;
2334 
    }
2335 
 
2336 
  trace_output (OP_REG_REG_REG);
2337 
 
2338 
  return 4;
2339 
}
2340 
 
2341 
/* div  reg1, reg2, reg3 */
2342 
int
2343 
OP_2C007E0 (void)
2344 
{
2345 
  signed long int quotient;
2346 
  signed long int remainder;
2347 
  signed long int divide_by;
2348 
  signed long int divide_this;
2349 
 
2350 
  trace_input ("div", OP_REG_REG_REG, 0);
2351 
 
2352 
  /* Compute the result.  */
2353 
 
2354 
  divide_by   = (signed32) State.regs[ OP[0] ];
2355 
  divide_this = State.regs[ OP[1] ];
2356 
 
2357 
  if (divide_by == 0)
2358 
    {
2359 
      PSW |= PSW_OV;
2360 
    }
2361 
  else if (divide_by == -1 && divide_this == (1L << 31))
2362 
    {
2363 
      PSW &= ~PSW_Z;
2364 
      PSW |= PSW_OV | PSW_S;
2365 
      State.regs[ OP[1] ] = (1 << 31);
2366 
      State.regs[ OP[2] >> 11 ] = 0;
2367 
    }
2368 
  else
2369 
    {
2370 
      divide_this = (signed32) divide_this;
2371 
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
2372 
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
2373 
 
2374 
      /* Set condition codes.  */
2375 
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2376 
 
2377 
      if (quotient == 0) PSW |= PSW_Z;
2378 
      if (quotient <  0) PSW |= PSW_S;
2379 
    }
2380 
 
2381 
  trace_output (OP_REG_REG_REG);
2382 
 
2383 
  return 4;
2384 
}
2385 
 
2386 
/* divhu  reg1, reg2, reg3 */
2387 
int
2388 
OP_28207E0 (void)
2389 
{
2390 
  unsigned long int quotient;
2391 
  unsigned long int remainder;
2392 
  unsigned long int divide_by;
2393 
  unsigned long int divide_this;
2394 
  int           overflow = 0;
2395 
 
2396 
  trace_input ("divhu", OP_REG_REG_REG, 0);
2397 
 
2398 
  /* Compute the result.  */
2399 
 
2400 
  divide_by   = State.regs[ OP[0] ] & 0xffff;
2401 
  divide_this = State.regs[ OP[1] ];
2402 
 
2403 
  if (divide_by == 0)
2404 
    {
2405 
      PSW |= PSW_OV;
2406 
    }
2407 
  else
2408 
    {
2409 
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
2410 
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
2411 
 
2412 
      /* Set condition codes.  */
2413 
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2414 
 
2415 
      if (overflow)      PSW |= PSW_OV;
2416 
      if (quotient == 0) PSW |= PSW_Z;
2417 
      if (quotient & 0x80000000) PSW |= PSW_S;
2418 
    }
2419 
 
2420 
  trace_output (OP_REG_REG_REG);
2421 
 
2422 
  return 4;
2423 
}
2424 
 
2425 
/* divh  reg1, reg2, reg3 */
2426 
int
2427 
OP_28007E0 (void)
2428 
{
2429 
  signed long int quotient;
2430 
  signed long int remainder;
2431 
  signed long int divide_by;
2432 
  signed long int divide_this;
2433 
  int         overflow = 0;
2434 
 
2435 
  trace_input ("divh", OP_REG_REG_REG, 0);
2436 
 
2437 
  /* Compute the result.  */
2438 
 
2439 
  divide_by  = EXTEND16 (State.regs[ OP[0] ]);
2440 
  divide_this = State.regs[ OP[1] ];
2441 
 
2442 
  if (divide_by == 0)
2443 
    {
2444 
      PSW |= PSW_OV;
2445 
    }
2446 
  else if (divide_by == -1 && divide_this == (1L << 31))
2447 
    {
2448 
      PSW &= ~PSW_Z;
2449 
      PSW |= PSW_OV | PSW_S;
2450 
      State.regs[ OP[1] ] = (1 << 31);
2451 
      State.regs[ OP[2] >> 11 ] = 0;
2452 
    }
2453 
  else
2454 
    {
2455 
      divide_this = (signed32) divide_this;
2456 
      State.regs[ OP[1]       ] = quotient  = divide_this / divide_by;
2457 
      State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by;
2458 
 
2459 
      /* Set condition codes.  */
2460 
      PSW &= ~(PSW_Z | PSW_S | PSW_OV);
2461 
 
2462 
      if (quotient == 0) PSW |= PSW_Z;
2463 
      if (quotient <  0) PSW |= PSW_S;
2464 
    }
2465 
 
2466 
  trace_output (OP_REG_REG_REG);
2467 
 
2468 
  return 4;
2469 
}
2470 
 
2471 
/* mulu imm9, reg2, reg3 */
2472 
int
2473 
OP_24207E0 (void)
2474 
{
2475 
  trace_input ("mulu", OP_IMM_REG_REG, 0);
2476 
 
2477 
  Multiply64 (0, (OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0));
2478 
 
2479 
  trace_output (OP_IMM_REG_REG);
2480 
 
2481 
  return 4;
2482 
}
2483 
 
2484 
/* mul imm9, reg2, reg3 */
2485 
int
2486 
OP_24007E0 (void)
2487 
{
2488 
  trace_input ("mul", OP_IMM_REG_REG, 0);
2489 
 
2490 
  Multiply64 (1, SEXT9 ((OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0)));
2491 
 
2492 
  trace_output (OP_IMM_REG_REG);
2493 
 
2494 
  return 4;
2495 
}
2496 
 
2497 
/* ld.hu */
2498 
int
2499 
OP_107E0 (void)
2500 
{
2501 
  int adr;
2502 
 
2503 
  trace_input ("ld.hu", OP_LOAD32, 2);
2504 
 
2505 
  adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1);
2506 
  adr &= ~0x1;
2507 
 
2508 
  State.regs[ OP[1] ] = load_mem (adr, 2);
2509 
 
2510 
  trace_output (OP_LOAD32);
2511 
 
2512 
  return 4;
2513 
}
2514 
 
2515 
 
2516 
/* ld.bu */
2517 
int
2518 
OP_10780 (void)
2519 
{
2520 
  int adr;
2521 
 
2522 
  trace_input ("ld.bu", OP_LOAD32, 1);
2523 
 
2524 
  adr = (State.regs[ OP[0] ]
2525 
         + (EXTEND16 (OP[2] & ~1) | ((OP[3] >> 5) & 1)));
2526 
 
2527 
  State.regs[ OP[1] ] = load_mem (adr, 1);
2528 
 
2529 
  trace_output (OP_LOAD32);
2530 
 
2531 
  return 4;
2532 
}
2533 
 
2534 
/* prepare list12, imm5, imm32 */
2535 
int
2536 
OP_1B0780 (void)
2537 
{
2538 
  int  i;
2539 
 
2540 
  trace_input ("prepare", OP_PUSHPOP1, 0);
2541 
 
2542 
  /* Store the registers with lower number registers being placed at higher addresses.  */
2543 
  for (i = 0; i < 12; i++)
2544 
    if ((OP[3] & (1 << type1_regs[ i ])))
2545 
      {
2546 
        SP -= 4;
2547 
        store_mem (SP, 4, State.regs[ 20 + i ]);
2548 
      }
2549 
 
2550 
  SP -= (OP[3] & 0x3e) << 1;
2551 
 
2552 
  EP = load_mem (PC + 4, 4);
2553 
 
2554 
  trace_output (OP_PUSHPOP1);
2555 
 
2556 
  return 8;
2557 
}
2558 
 
2559 
/* prepare list12, imm5, imm16-32 */
2560 
int
2561 
OP_130780 (void)
2562 
{
2563 
  int  i;
2564 
 
2565 
  trace_input ("prepare", OP_PUSHPOP1, 0);
2566 
 
2567 
  /* Store the registers with lower number registers being placed at higher addresses.  */
2568 
  for (i = 0; i < 12; i++)
2569 
    if ((OP[3] & (1 << type1_regs[ i ])))
2570 
      {
2571 
        SP -= 4;
2572 
        store_mem (SP, 4, State.regs[ 20 + i ]);
2573 
      }
2574 
 
2575 
  SP -= (OP[3] & 0x3e) << 1;
2576 
 
2577 
  EP = load_mem (PC + 4, 2) << 16;
2578 
 
2579 
  trace_output (OP_PUSHPOP1);
2580 
 
2581 
  return 6;
2582 
}
2583 
 
2584 
/* prepare list12, imm5, imm16 */
2585 
int
2586 
OP_B0780 (void)
2587 
{
2588 
  int  i;
2589 
 
2590 
  trace_input ("prepare", OP_PUSHPOP1, 0);
2591 
 
2592 
  /* Store the registers with lower number registers being placed at higher addresses.  */
2593 
  for (i = 0; i < 12; i++)
2594 
    if ((OP[3] & (1 << type1_regs[ i ])))
2595 
      {
2596 
        SP -= 4;
2597 
        store_mem (SP, 4, State.regs[ 20 + i ]);
2598 
      }
2599 
 
2600 
  SP -= (OP[3] & 0x3e) << 1;
2601 
 
2602 
  EP = EXTEND16 (load_mem (PC + 4, 2));
2603 
 
2604 
  trace_output (OP_PUSHPOP1);
2605 
 
2606 
  return 6;
2607 
}
2608 
 
2609 
/* prepare list12, imm5, sp */
2610 
int
2611 
OP_30780 (void)
2612 
{
2613 
  int  i;
2614 
 
2615 
  trace_input ("prepare", OP_PUSHPOP1, 0);
2616 
 
2617 
  /* Store the registers with lower number registers being placed at higher addresses.  */
2618 
  for (i = 0; i < 12; i++)
2619 
    if ((OP[3] & (1 << type1_regs[ i ])))
2620 
      {
2621 
        SP -= 4;
2622 
        store_mem (SP, 4, State.regs[ 20 + i ]);
2623 
      }
2624 
 
2625 
  SP -= (OP[3] & 0x3e) << 1;
2626 
 
2627 
  EP = SP;
2628 
 
2629 
  trace_output (OP_PUSHPOP1);
2630 
 
2631 
  return 4;
2632 
}
2633 
 
2634 
/* mul reg1, reg2, reg3 */
2635 
int
2636 
OP_22007E0 (void)
2637 
{
2638 
  trace_input ("mul", OP_REG_REG_REG, 0);
2639 
 
2640 
  Multiply64 (1, State.regs[ OP[0] ]);
2641 
 
2642 
  trace_output (OP_REG_REG_REG);
2643 
 
2644 
  return 4;
2645 
}
2646 
 
2647 
/* popmh list18 */
2648 
int
2649 
OP_307F0 (void)
2650 
{
2651 
  int i;
2652 
 
2653 
  trace_input ("popmh", OP_PUSHPOP2, 0);
2654 
 
2655 
  if (OP[3] & (1 << 19))
2656 
    {
2657 
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
2658 
        {
2659 
          FEPSW = load_mem ( SP      & ~ 3, 4);
2660 
          FEPC  = load_mem ((SP + 4) & ~ 3, 4);
2661 
        }
2662 
      else
2663 
        {
2664 
          EIPSW = load_mem ( SP      & ~ 3, 4);
2665 
          EIPC  = load_mem ((SP + 4) & ~ 3, 4);
2666 
        }
2667 
 
2668 
      SP += 8;
2669 
    }
2670 
 
2671 
  /* Load the registers with lower number registers being retrieved from higher addresses.  */
2672 
  for (i = 16; i--;)
2673 
    if ((OP[3] & (1 << type2_regs[ i ])))
2674 
      {
2675 
        State.regs[ i + 16 ] = load_mem (SP & ~ 3, 4);
2676 
        SP += 4;
2677 
      }
2678 
 
2679 
  trace_output (OP_PUSHPOP2);
2680 
 
2681 
  return 4;
2682 
}
2683 
 
2684 
/* popml lsit18 */
2685 
int
2686 
OP_107F0 (void)
2687 
{
2688 
  int i;
2689 
 
2690 
  trace_input ("popml", OP_PUSHPOP3, 0);
2691 
 
2692 
  if (OP[3] & (1 << 19))
2693 
    {
2694 
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
2695 
        {
2696 
          FEPSW = load_mem ( SP      & ~ 3, 4);
2697 
          FEPC =  load_mem ((SP + 4) & ~ 3, 4);
2698 
        }
2699 
      else
2700 
        {
2701 
          EIPSW = load_mem ( SP      & ~ 3, 4);
2702 
          EIPC  = load_mem ((SP + 4) & ~ 3, 4);
2703 
        }
2704 
 
2705 
      SP += 8;
2706 
    }
2707 
 
2708 
  if (OP[3] & (1 << 3))
2709 
    {
2710 
      PSW = load_mem (SP & ~ 3, 4);
2711 
      SP += 4;
2712 
    }
2713 
 
2714 
  /* Load the registers with lower number registers being retrieved from higher addresses.  */
2715 
  for (i = 15; i--;)
2716 
    if ((OP[3] & (1 << type3_regs[ i ])))
2717 
      {
2718 
        State.regs[ i + 1 ] = load_mem (SP & ~ 3, 4);
2719 
        SP += 4;
2720 
      }
2721 
 
2722 
  trace_output (OP_PUSHPOP2);
2723 
 
2724 
  return 4;
2725 
}
2726 
 
2727 
/* pushmh list18 */
2728 
int
2729 
OP_307E0 (void)
2730 
{
2731 
  int i;
2732 
 
2733 
  trace_input ("pushmh", OP_PUSHPOP2, 0);
2734 
 
2735 
  /* Store the registers with lower number registers being placed at higher addresses.  */
2736 
  for (i = 0; i < 16; i++)
2737 
    if ((OP[3] & (1 << type2_regs[ i ])))
2738 
      {
2739 
        SP -= 4;
2740 
        store_mem (SP & ~ 3, 4, State.regs[ i + 16 ]);
2741 
      }
2742 
 
2743 
  if (OP[3] & (1 << 19))
2744 
    {
2745 
      SP -= 8;
2746 
 
2747 
      if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0))
2748 
        {
2749 
          store_mem ((SP + 4) & ~ 3, 4, FEPC);
2750 
          store_mem ( SP      & ~ 3, 4, FEPSW);
2751 
        }
2752 
      else
2753 
        {
2754 
          store_mem ((SP + 4) & ~ 3, 4, EIPC);
2755 
          store_mem ( SP      & ~ 3, 4, EIPSW);
2756 
        }
2757 
    }
2758 
 
2759 
  trace_output (OP_PUSHPOP2);
2760 
 
2761 
  return 4;
2762 
}
2763 
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.