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c906108c SS |
1 | #include "sim-main.h" |
2 | #include "v850_sim.h" | |
3 | #include "simops.h" | |
4 | ||
4389ce38 MK |
5 | #include <sys/types.h> |
6 | ||
c906108c SS |
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 | { | |
d62274a3 AC |
216 | sprintf (chp, "%*s0x%.8lx", SIZE_VALUES - 10, "", |
217 | (long) trace_values[i]); | |
c906108c SS |
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 | \f | |
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 | |
0da2b665 | 334 | Multiply64 (int sign, unsigned long op0) |
c906108c SS |
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 | \f | |
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 | \f | |
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 | ||
c906108c SS |
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 | /* Store the result and condition codes. */ | |
868 | State.regs[OP[1]] = result; | |
869 | PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV); | |
870 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
871 | | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0) | |
872 | | (sat ? PSW_SAT : 0)); | |
873 | ||
874 | /* Handle saturated results. */ | |
875 | if (sat && s) | |
876 | State.regs[OP[1]] = 0x80000000; | |
877 | else if (sat) | |
878 | State.regs[OP[1]] = 0x7fffffff; | |
879 | trace_output (OP_REG_REG); | |
880 | ||
881 | return 2; | |
882 | } | |
883 | ||
884 | /* satadd sign_extend(imm5), reg */ | |
885 | int | |
886 | OP_220 () | |
887 | { | |
888 | unsigned int op0, op1, result, z, s, cy, ov, sat; | |
889 | ||
890 | int temp; | |
891 | ||
892 | trace_input ("satadd", OP_IMM_REG, 0); | |
893 | ||
894 | /* Compute the result. */ | |
895 | temp = SEXT5 (OP[0]); | |
896 | op0 = temp; | |
897 | op1 = State.regs[OP[1]]; | |
898 | result = op0 + op1; | |
899 | ||
900 | /* Compute the condition codes. */ | |
901 | z = (result == 0); | |
902 | s = (result & 0x80000000); | |
903 | cy = (result < op0 || result < op1); | |
904 | ov = ((op0 & 0x80000000) == (op1 & 0x80000000) | |
905 | && (op0 & 0x80000000) != (result & 0x80000000)); | |
906 | sat = ov; | |
907 | ||
908 | /* Store the result and condition codes. */ | |
909 | State.regs[OP[1]] = result; | |
910 | PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV); | |
911 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
912 | | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0) | |
913 | | (sat ? PSW_SAT : 0)); | |
914 | ||
915 | /* Handle saturated results. */ | |
916 | if (sat && s) | |
917 | State.regs[OP[1]] = 0x80000000; | |
918 | else if (sat) | |
919 | State.regs[OP[1]] = 0x7fffffff; | |
920 | trace_output (OP_IMM_REG); | |
921 | ||
922 | return 2; | |
923 | } | |
924 | ||
925 | /* satsub reg1, reg2 */ | |
926 | int | |
927 | OP_A0 () | |
928 | { | |
929 | unsigned int op0, op1, result, z, s, cy, ov, sat; | |
930 | ||
931 | trace_input ("satsub", OP_REG_REG, 0); | |
932 | ||
933 | /* Compute the result. */ | |
934 | op0 = State.regs[ OP[0] ]; | |
935 | op1 = State.regs[ OP[1] ]; | |
936 | result = op1 - op0; | |
937 | ||
938 | /* Compute the condition codes. */ | |
939 | z = (result == 0); | |
940 | s = (result & 0x80000000); | |
941 | cy = (op1 < op0); | |
942 | ov = ((op1 & 0x80000000) != (op0 & 0x80000000) | |
943 | && (op1 & 0x80000000) != (result & 0x80000000)); | |
944 | sat = ov; | |
945 | ||
946 | /* Store the result and condition codes. */ | |
947 | State.regs[OP[1]] = result; | |
948 | PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV); | |
949 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
950 | | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0) | |
951 | | (sat ? PSW_SAT : 0)); | |
952 | ||
953 | /* Handle saturated results. */ | |
954 | if (sat && s) | |
955 | State.regs[OP[1]] = 0x80000000; | |
956 | else if (sat) | |
957 | State.regs[OP[1]] = 0x7fffffff; | |
958 | trace_output (OP_REG_REG); | |
959 | return 2; | |
960 | } | |
961 | ||
962 | /* satsubi sign_extend(imm16), reg */ | |
963 | int | |
964 | OP_660 () | |
965 | { | |
966 | unsigned int op0, op1, result, z, s, cy, ov, sat; | |
967 | int temp; | |
968 | ||
969 | trace_input ("satsubi", OP_IMM_REG, 0); | |
970 | ||
971 | /* Compute the result. */ | |
972 | temp = EXTEND16 (OP[2]); | |
973 | op0 = temp; | |
974 | op1 = State.regs[ OP[0] ]; | |
975 | result = op1 - op0; | |
976 | ||
977 | /* Compute the condition codes. */ | |
978 | z = (result == 0); | |
979 | s = (result & 0x80000000); | |
980 | cy = (op1 < op0); | |
981 | ov = ((op1 & 0x80000000) != (op0 & 0x80000000) | |
982 | && (op1 & 0x80000000) != (result & 0x80000000)); | |
983 | sat = ov; | |
984 | ||
985 | /* Store the result and condition codes. */ | |
986 | State.regs[OP[1]] = result; | |
987 | PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV); | |
988 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
989 | | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0) | |
990 | | (sat ? PSW_SAT : 0)); | |
991 | ||
992 | /* Handle saturated results. */ | |
993 | if (sat && s) | |
994 | State.regs[OP[1]] = 0x80000000; | |
995 | else if (sat) | |
996 | State.regs[OP[1]] = 0x7fffffff; | |
997 | trace_output (OP_IMM_REG); | |
998 | ||
999 | return 4; | |
1000 | } | |
1001 | ||
1002 | /* satsubr reg,reg */ | |
1003 | int | |
1004 | OP_80 () | |
1005 | { | |
1006 | unsigned int op0, op1, result, z, s, cy, ov, sat; | |
1007 | ||
1008 | trace_input ("satsubr", OP_REG_REG, 0); | |
1009 | ||
1010 | /* Compute the result. */ | |
1011 | op0 = State.regs[ OP[0] ]; | |
1012 | op1 = State.regs[ OP[1] ]; | |
1013 | result = op0 - op1; | |
1014 | ||
1015 | /* Compute the condition codes. */ | |
1016 | z = (result == 0); | |
1017 | s = (result & 0x80000000); | |
1018 | cy = (result < op0); | |
1019 | ov = ((op1 & 0x80000000) != (op0 & 0x80000000) | |
1020 | && (op1 & 0x80000000) != (result & 0x80000000)); | |
1021 | sat = ov; | |
1022 | ||
1023 | /* Store the result and condition codes. */ | |
1024 | State.regs[OP[1]] = result; | |
1025 | PSW &= ~(PSW_Z | PSW_S | PSW_CY | PSW_OV); | |
1026 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1027 | | (cy ? PSW_CY : 0) | (ov ? PSW_OV : 0) | |
1028 | | (sat ? PSW_SAT : 0)); | |
1029 | ||
1030 | /* Handle saturated results. */ | |
1031 | if (sat && s) | |
1032 | State.regs[OP[1]] = 0x80000000; | |
1033 | else if (sat) | |
1034 | State.regs[OP[1]] = 0x7fffffff; | |
1035 | trace_output (OP_REG_REG); | |
1036 | ||
1037 | return 2; | |
1038 | } | |
1039 | ||
1040 | /* tst reg,reg */ | |
1041 | int | |
1042 | OP_160 () | |
1043 | { | |
1044 | unsigned int op0, op1, result, z, s; | |
1045 | ||
1046 | trace_input ("tst", OP_REG_REG_CMP, 0); | |
1047 | ||
1048 | /* Compute the result. */ | |
1049 | op0 = State.regs[ OP[0] ]; | |
1050 | op1 = State.regs[ OP[1] ]; | |
1051 | result = op0 & op1; | |
1052 | ||
1053 | /* Compute the condition codes. */ | |
1054 | z = (result == 0); | |
1055 | s = (result & 0x80000000); | |
1056 | ||
1057 | /* Store the condition codes. */ | |
1058 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1059 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1060 | trace_output (OP_REG_REG_CMP); | |
1061 | ||
1062 | return 2; | |
1063 | } | |
1064 | ||
1065 | /* mov sign_extend(imm5), reg */ | |
1066 | int | |
1067 | OP_200 () | |
1068 | { | |
1069 | int value = SEXT5 (OP[0]); | |
1070 | ||
1071 | trace_input ("mov", OP_IMM_REG_MOVE, 0); | |
1072 | ||
1073 | State.regs[ OP[1] ] = value; | |
1074 | ||
1075 | trace_output (OP_IMM_REG_MOVE); | |
1076 | ||
1077 | return 2; | |
1078 | } | |
1079 | ||
1080 | /* movhi imm16, reg, reg */ | |
1081 | int | |
1082 | OP_640 () | |
1083 | { | |
1084 | trace_input ("movhi", OP_UIMM16_REG_REG, 16); | |
1085 | ||
1086 | State.regs[ OP[1] ] = State.regs[ OP[0] ] + (OP[2] << 16); | |
1087 | ||
1088 | trace_output (OP_UIMM16_REG_REG); | |
1089 | ||
1090 | return 4; | |
1091 | } | |
1092 | ||
1093 | /* sar zero_extend(imm5),reg1 */ | |
1094 | int | |
1095 | OP_2A0 () | |
1096 | { | |
1097 | unsigned int op0, op1, result, z, s, cy; | |
1098 | ||
1099 | trace_input ("sar", OP_IMM_REG, 0); | |
1100 | op0 = OP[0]; | |
1101 | op1 = State.regs[ OP[1] ]; | |
1102 | result = (signed)op1 >> op0; | |
1103 | ||
1104 | /* Compute the condition codes. */ | |
1105 | z = (result == 0); | |
1106 | s = (result & 0x80000000); | |
1107 | cy = (op1 & (1 << (op0 - 1))); | |
1108 | ||
1109 | /* Store the result and condition codes. */ | |
1110 | State.regs[ OP[1] ] = result; | |
1111 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1112 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1113 | | (cy ? PSW_CY : 0)); | |
1114 | trace_output (OP_IMM_REG); | |
1115 | ||
1116 | return 2; | |
1117 | } | |
1118 | ||
1119 | /* sar reg1, reg2 */ | |
1120 | int | |
1121 | OP_A007E0 () | |
1122 | { | |
1123 | unsigned int op0, op1, result, z, s, cy; | |
1124 | ||
1125 | trace_input ("sar", OP_REG_REG, 0); | |
1126 | ||
1127 | op0 = State.regs[ OP[0] ] & 0x1f; | |
1128 | op1 = State.regs[ OP[1] ]; | |
1129 | result = (signed)op1 >> op0; | |
1130 | ||
1131 | /* Compute the condition codes. */ | |
1132 | z = (result == 0); | |
1133 | s = (result & 0x80000000); | |
1134 | cy = (op1 & (1 << (op0 - 1))); | |
1135 | ||
1136 | /* Store the result and condition codes. */ | |
1137 | State.regs[OP[1]] = result; | |
1138 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1139 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1140 | | (cy ? PSW_CY : 0)); | |
1141 | trace_output (OP_REG_REG); | |
1142 | ||
1143 | return 4; | |
1144 | } | |
1145 | ||
1146 | /* shl zero_extend(imm5),reg1 */ | |
1147 | int | |
1148 | OP_2C0 () | |
1149 | { | |
1150 | unsigned int op0, op1, result, z, s, cy; | |
1151 | ||
1152 | trace_input ("shl", OP_IMM_REG, 0); | |
1153 | op0 = OP[0]; | |
1154 | op1 = State.regs[ OP[1] ]; | |
1155 | result = op1 << op0; | |
1156 | ||
1157 | /* Compute the condition codes. */ | |
1158 | z = (result == 0); | |
1159 | s = (result & 0x80000000); | |
1160 | cy = (op1 & (1 << (32 - op0))); | |
1161 | ||
1162 | /* Store the result and condition codes. */ | |
1163 | State.regs[OP[1]] = result; | |
1164 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1165 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1166 | | (cy ? PSW_CY : 0)); | |
1167 | trace_output (OP_IMM_REG); | |
1168 | ||
1169 | return 2; | |
1170 | } | |
1171 | ||
1172 | /* shl reg1, reg2 */ | |
1173 | int | |
1174 | OP_C007E0 () | |
1175 | { | |
1176 | unsigned int op0, op1, result, z, s, cy; | |
1177 | ||
1178 | trace_input ("shl", OP_REG_REG, 0); | |
1179 | op0 = State.regs[ OP[0] ] & 0x1f; | |
1180 | op1 = State.regs[ OP[1] ]; | |
1181 | result = op1 << op0; | |
1182 | ||
1183 | /* Compute the condition codes. */ | |
1184 | z = (result == 0); | |
1185 | s = (result & 0x80000000); | |
1186 | cy = (op1 & (1 << (32 - op0))); | |
1187 | ||
1188 | /* Store the result and condition codes. */ | |
1189 | State.regs[OP[1]] = result; | |
1190 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1191 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1192 | | (cy ? PSW_CY : 0)); | |
1193 | trace_output (OP_REG_REG); | |
1194 | ||
1195 | return 4; | |
1196 | } | |
1197 | ||
1198 | /* shr zero_extend(imm5),reg1 */ | |
1199 | int | |
1200 | OP_280 () | |
1201 | { | |
1202 | unsigned int op0, op1, result, z, s, cy; | |
1203 | ||
1204 | trace_input ("shr", OP_IMM_REG, 0); | |
1205 | op0 = OP[0]; | |
1206 | op1 = State.regs[ OP[1] ]; | |
1207 | result = op1 >> op0; | |
1208 | ||
1209 | /* Compute the condition codes. */ | |
1210 | z = (result == 0); | |
1211 | s = (result & 0x80000000); | |
1212 | cy = (op1 & (1 << (op0 - 1))); | |
1213 | ||
1214 | /* Store the result and condition codes. */ | |
1215 | State.regs[OP[1]] = result; | |
1216 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1217 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1218 | | (cy ? PSW_CY : 0)); | |
1219 | trace_output (OP_IMM_REG); | |
1220 | ||
1221 | return 2; | |
1222 | } | |
1223 | ||
1224 | /* shr reg1, reg2 */ | |
1225 | int | |
1226 | OP_8007E0 () | |
1227 | { | |
1228 | unsigned int op0, op1, result, z, s, cy; | |
1229 | ||
1230 | trace_input ("shr", OP_REG_REG, 0); | |
1231 | op0 = State.regs[ OP[0] ] & 0x1f; | |
1232 | op1 = State.regs[ OP[1] ]; | |
1233 | result = op1 >> op0; | |
1234 | ||
1235 | /* Compute the condition codes. */ | |
1236 | z = (result == 0); | |
1237 | s = (result & 0x80000000); | |
1238 | cy = (op1 & (1 << (op0 - 1))); | |
1239 | ||
1240 | /* Store the result and condition codes. */ | |
1241 | State.regs[OP[1]] = result; | |
1242 | PSW &= ~(PSW_Z | PSW_S | PSW_OV | PSW_CY); | |
1243 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0) | |
1244 | | (cy ? PSW_CY : 0)); | |
1245 | trace_output (OP_REG_REG); | |
1246 | ||
1247 | return 4; | |
1248 | } | |
1249 | ||
1250 | /* or reg, reg */ | |
1251 | int | |
1252 | OP_100 () | |
1253 | { | |
1254 | unsigned int op0, op1, result, z, s; | |
1255 | ||
1256 | trace_input ("or", OP_REG_REG, 0); | |
1257 | ||
1258 | /* Compute the result. */ | |
1259 | op0 = State.regs[ OP[0] ]; | |
1260 | op1 = State.regs[ OP[1] ]; | |
1261 | result = op0 | op1; | |
1262 | ||
1263 | /* Compute the condition codes. */ | |
1264 | z = (result == 0); | |
1265 | s = (result & 0x80000000); | |
1266 | ||
1267 | /* Store the result and condition codes. */ | |
1268 | State.regs[OP[1]] = result; | |
1269 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1270 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1271 | trace_output (OP_REG_REG); | |
1272 | ||
1273 | return 2; | |
1274 | } | |
1275 | ||
1276 | /* ori zero_extend(imm16), reg, reg */ | |
1277 | int | |
1278 | OP_680 () | |
1279 | { | |
1280 | unsigned int op0, op1, result, z, s; | |
1281 | ||
1282 | trace_input ("ori", OP_UIMM16_REG_REG, 0); | |
1283 | op0 = OP[2]; | |
1284 | op1 = State.regs[ OP[0] ]; | |
1285 | result = op0 | op1; | |
1286 | ||
1287 | /* Compute the condition codes. */ | |
1288 | z = (result == 0); | |
1289 | s = (result & 0x80000000); | |
1290 | ||
1291 | /* Store the result and condition codes. */ | |
1292 | State.regs[OP[1]] = result; | |
1293 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1294 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1295 | trace_output (OP_UIMM16_REG_REG); | |
1296 | ||
1297 | return 4; | |
1298 | } | |
1299 | ||
1300 | /* and reg, reg */ | |
1301 | int | |
1302 | OP_140 () | |
1303 | { | |
1304 | unsigned int op0, op1, result, z, s; | |
1305 | ||
1306 | trace_input ("and", OP_REG_REG, 0); | |
1307 | ||
1308 | /* Compute the result. */ | |
1309 | op0 = State.regs[ OP[0] ]; | |
1310 | op1 = State.regs[ OP[1] ]; | |
1311 | result = op0 & op1; | |
1312 | ||
1313 | /* Compute the condition codes. */ | |
1314 | z = (result == 0); | |
1315 | s = (result & 0x80000000); | |
1316 | ||
1317 | /* Store the result and condition codes. */ | |
1318 | State.regs[OP[1]] = result; | |
1319 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1320 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1321 | trace_output (OP_REG_REG); | |
1322 | ||
1323 | return 2; | |
1324 | } | |
1325 | ||
1326 | /* andi zero_extend(imm16), reg, reg */ | |
1327 | int | |
1328 | OP_6C0 () | |
1329 | { | |
1330 | unsigned int result, z; | |
1331 | ||
1332 | trace_input ("andi", OP_UIMM16_REG_REG, 0); | |
1333 | ||
1334 | result = OP[2] & State.regs[ OP[0] ]; | |
1335 | ||
1336 | /* Compute the condition codes. */ | |
1337 | z = (result == 0); | |
1338 | ||
1339 | /* Store the result and condition codes. */ | |
1340 | State.regs[ OP[1] ] = result; | |
1341 | ||
1342 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1343 | PSW |= (z ? PSW_Z : 0); | |
1344 | ||
1345 | trace_output (OP_UIMM16_REG_REG); | |
1346 | ||
1347 | return 4; | |
1348 | } | |
1349 | ||
1350 | /* xor reg, reg */ | |
1351 | int | |
1352 | OP_120 () | |
1353 | { | |
1354 | unsigned int op0, op1, result, z, s; | |
1355 | ||
1356 | trace_input ("xor", OP_REG_REG, 0); | |
1357 | ||
1358 | /* Compute the result. */ | |
1359 | op0 = State.regs[ OP[0] ]; | |
1360 | op1 = State.regs[ OP[1] ]; | |
1361 | result = op0 ^ op1; | |
1362 | ||
1363 | /* Compute the condition codes. */ | |
1364 | z = (result == 0); | |
1365 | s = (result & 0x80000000); | |
1366 | ||
1367 | /* Store the result and condition codes. */ | |
1368 | State.regs[OP[1]] = result; | |
1369 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1370 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1371 | trace_output (OP_REG_REG); | |
1372 | ||
1373 | return 2; | |
1374 | } | |
1375 | ||
1376 | /* xori zero_extend(imm16), reg, reg */ | |
1377 | int | |
1378 | OP_6A0 () | |
1379 | { | |
1380 | unsigned int op0, op1, result, z, s; | |
1381 | ||
1382 | trace_input ("xori", OP_UIMM16_REG_REG, 0); | |
1383 | op0 = OP[2]; | |
1384 | op1 = State.regs[ OP[0] ]; | |
1385 | result = op0 ^ op1; | |
1386 | ||
1387 | /* Compute the condition codes. */ | |
1388 | z = (result == 0); | |
1389 | s = (result & 0x80000000); | |
1390 | ||
1391 | /* Store the result and condition codes. */ | |
1392 | State.regs[OP[1]] = result; | |
1393 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1394 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1395 | trace_output (OP_UIMM16_REG_REG); | |
1396 | ||
1397 | return 4; | |
1398 | } | |
1399 | ||
1400 | /* not reg1, reg2 */ | |
1401 | int | |
1402 | OP_20 () | |
1403 | { | |
1404 | unsigned int op0, result, z, s; | |
1405 | ||
1406 | trace_input ("not", OP_REG_REG_MOVE, 0); | |
1407 | /* Compute the result. */ | |
1408 | op0 = State.regs[ OP[0] ]; | |
1409 | result = ~op0; | |
1410 | ||
1411 | /* Compute the condition codes. */ | |
1412 | z = (result == 0); | |
1413 | s = (result & 0x80000000); | |
1414 | ||
1415 | /* Store the result and condition codes. */ | |
1416 | State.regs[OP[1]] = result; | |
1417 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
1418 | PSW |= ((z ? PSW_Z : 0) | (s ? PSW_S : 0)); | |
1419 | trace_output (OP_REG_REG_MOVE); | |
1420 | ||
1421 | return 2; | |
1422 | } | |
1423 | ||
1424 | /* set1 */ | |
1425 | int | |
1426 | OP_7C0 () | |
1427 | { | |
1428 | unsigned int op0, op1, op2; | |
1429 | int temp; | |
1430 | ||
1431 | trace_input ("set1", OP_BIT, 0); | |
1432 | op0 = State.regs[ OP[0] ]; | |
1433 | op1 = OP[1] & 0x7; | |
1434 | temp = EXTEND16 (OP[2]); | |
1435 | op2 = temp; | |
1436 | temp = load_mem (op0 + op2, 1); | |
1437 | PSW &= ~PSW_Z; | |
1438 | if ((temp & (1 << op1)) == 0) | |
1439 | PSW |= PSW_Z; | |
1440 | temp |= (1 << op1); | |
1441 | store_mem (op0 + op2, 1, temp); | |
1442 | trace_output (OP_BIT); | |
1443 | ||
1444 | return 4; | |
1445 | } | |
1446 | ||
1447 | /* not1 */ | |
1448 | int | |
1449 | OP_47C0 () | |
1450 | { | |
1451 | unsigned int op0, op1, op2; | |
1452 | int temp; | |
1453 | ||
1454 | trace_input ("not1", OP_BIT, 0); | |
1455 | op0 = State.regs[ OP[0] ]; | |
1456 | op1 = OP[1] & 0x7; | |
1457 | temp = EXTEND16 (OP[2]); | |
1458 | op2 = temp; | |
1459 | temp = load_mem (op0 + op2, 1); | |
1460 | PSW &= ~PSW_Z; | |
1461 | if ((temp & (1 << op1)) == 0) | |
1462 | PSW |= PSW_Z; | |
1463 | temp ^= (1 << op1); | |
1464 | store_mem (op0 + op2, 1, temp); | |
1465 | trace_output (OP_BIT); | |
1466 | ||
1467 | return 4; | |
1468 | } | |
1469 | ||
1470 | /* clr1 */ | |
1471 | int | |
1472 | OP_87C0 () | |
1473 | { | |
1474 | unsigned int op0, op1, op2; | |
1475 | int temp; | |
1476 | ||
1477 | trace_input ("clr1", OP_BIT, 0); | |
1478 | op0 = State.regs[ OP[0] ]; | |
1479 | op1 = OP[1] & 0x7; | |
1480 | temp = EXTEND16 (OP[2]); | |
1481 | op2 = temp; | |
1482 | temp = load_mem (op0 + op2, 1); | |
1483 | PSW &= ~PSW_Z; | |
1484 | if ((temp & (1 << op1)) == 0) | |
1485 | PSW |= PSW_Z; | |
1486 | temp &= ~(1 << op1); | |
1487 | store_mem (op0 + op2, 1, temp); | |
1488 | trace_output (OP_BIT); | |
1489 | ||
1490 | return 4; | |
1491 | } | |
1492 | ||
1493 | /* tst1 */ | |
1494 | int | |
1495 | OP_C7C0 () | |
1496 | { | |
1497 | unsigned int op0, op1, op2; | |
1498 | int temp; | |
1499 | ||
1500 | trace_input ("tst1", OP_BIT, 0); | |
1501 | op0 = State.regs[ OP[0] ]; | |
1502 | op1 = OP[1] & 0x7; | |
1503 | temp = EXTEND16 (OP[2]); | |
1504 | op2 = temp; | |
1505 | temp = load_mem (op0 + op2, 1); | |
1506 | PSW &= ~PSW_Z; | |
1507 | if ((temp & (1 << op1)) == 0) | |
1508 | PSW |= PSW_Z; | |
1509 | trace_output (OP_BIT); | |
1510 | ||
1511 | return 4; | |
1512 | } | |
1513 | ||
1514 | /* di */ | |
1515 | int | |
1516 | OP_16007E0 () | |
1517 | { | |
1518 | trace_input ("di", OP_NONE, 0); | |
1519 | PSW |= PSW_ID; | |
1520 | trace_output (OP_NONE); | |
1521 | ||
1522 | return 4; | |
1523 | } | |
1524 | ||
1525 | /* ei */ | |
1526 | int | |
1527 | OP_16087E0 () | |
1528 | { | |
1529 | trace_input ("ei", OP_NONE, 0); | |
1530 | PSW &= ~PSW_ID; | |
1531 | trace_output (OP_NONE); | |
1532 | ||
1533 | return 4; | |
1534 | } | |
1535 | ||
1536 | /* halt */ | |
1537 | int | |
1538 | OP_12007E0 () | |
1539 | { | |
1540 | trace_input ("halt", OP_NONE, 0); | |
1541 | /* FIXME this should put processor into a mode where NMI still handled */ | |
1542 | trace_output (OP_NONE); | |
1543 | sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC, | |
1544 | sim_stopped, SIM_SIGTRAP); | |
1545 | return 0; | |
1546 | } | |
1547 | ||
1548 | /* trap */ | |
1549 | int | |
1550 | OP_10007E0 () | |
1551 | { | |
1552 | trace_input ("trap", OP_TRAP, 0); | |
1553 | trace_output (OP_TRAP); | |
1554 | ||
1555 | /* Trap 31 is used for simulating OS I/O functions */ | |
1556 | ||
1557 | if (OP[0] == 31) | |
1558 | { | |
1559 | int save_errno = errno; | |
1560 | errno = 0; | |
1561 | ||
1562 | /* Registers passed to trap 0 */ | |
1563 | ||
1564 | #define FUNC State.regs[6] /* function number, return value */ | |
1565 | #define PARM1 State.regs[7] /* optional parm 1 */ | |
1566 | #define PARM2 State.regs[8] /* optional parm 2 */ | |
1567 | #define PARM3 State.regs[9] /* optional parm 3 */ | |
1568 | ||
1569 | /* Registers set by trap 0 */ | |
1570 | ||
1571 | #define RETVAL State.regs[10] /* return value */ | |
1572 | #define RETERR State.regs[11] /* return error code */ | |
1573 | ||
1574 | /* Turn a pointer in a register into a pointer into real memory. */ | |
1575 | ||
1576 | #define MEMPTR(x) (map (x)) | |
1577 | ||
1578 | switch (FUNC) | |
1579 | { | |
1580 | ||
1581 | #ifdef HAVE_FORK | |
1582 | #ifdef TARGET_SYS_fork | |
1583 | case TARGET_SYS_fork: | |
1584 | RETVAL = fork (); | |
1585 | break; | |
1586 | #endif | |
1587 | #endif | |
1588 | ||
1589 | #ifdef HAVE_EXECVE | |
1590 | #ifdef TARGET_SYS_execv | |
1591 | case TARGET_SYS_execve: | |
1592 | { | |
1593 | char *path = fetch_str (simulator, PARM1); | |
1594 | char **argv = fetch_argv (simulator, PARM2); | |
1595 | char **envp = fetch_argv (simulator, PARM3); | |
1596 | RETVAL = execve (path, argv, envp); | |
1597 | zfree (path); | |
1598 | freeargv (argv); | |
1599 | freeargv (envp); | |
1600 | break; | |
1601 | } | |
1602 | #endif | |
1603 | #endif | |
1604 | ||
1605 | #if HAVE_EXECV | |
1606 | #ifdef TARGET_SYS_execv | |
1607 | case TARGET_SYS_execv: | |
1608 | { | |
1609 | char *path = fetch_str (simulator, PARM1); | |
1610 | char **argv = fetch_argv (simulator, PARM2); | |
1611 | RETVAL = execv (path, argv); | |
1612 | zfree (path); | |
1613 | freeargv (argv); | |
1614 | break; | |
1615 | } | |
1616 | #endif | |
1617 | #endif | |
1618 | ||
1619 | #if 0 | |
1620 | #ifdef TARGET_SYS_pipe | |
1621 | case TARGET_SYS_pipe: | |
1622 | { | |
1623 | reg_t buf; | |
1624 | int host_fd[2]; | |
1625 | ||
1626 | buf = PARM1; | |
1627 | RETVAL = pipe (host_fd); | |
1628 | SW (buf, host_fd[0]); | |
1629 | buf += sizeof(uint16); | |
1630 | SW (buf, host_fd[1]); | |
1631 | } | |
1632 | break; | |
1633 | #endif | |
1634 | #endif | |
1635 | ||
1636 | #if 0 | |
1637 | #ifdef TARGET_SYS_wait | |
1638 | case TARGET_SYS_wait: | |
1639 | { | |
1640 | int status; | |
1641 | ||
1642 | RETVAL = wait (&status); | |
1643 | SW (PARM1, status); | |
1644 | } | |
1645 | break; | |
1646 | #endif | |
1647 | #endif | |
1648 | ||
1649 | #ifdef TARGET_SYS_read | |
1650 | case TARGET_SYS_read: | |
1651 | { | |
1652 | char *buf = zalloc (PARM3); | |
1653 | RETVAL = sim_io_read (simulator, PARM1, buf, PARM3); | |
1654 | sim_write (simulator, PARM2, buf, PARM3); | |
1655 | zfree (buf); | |
1656 | break; | |
1657 | } | |
1658 | #endif | |
1659 | ||
1660 | #ifdef TARGET_SYS_write | |
1661 | case TARGET_SYS_write: | |
1662 | { | |
1663 | char *buf = zalloc (PARM3); | |
1664 | sim_read (simulator, PARM2, buf, PARM3); | |
1665 | if (PARM1 == 1) | |
1666 | RETVAL = sim_io_write_stdout (simulator, buf, PARM3); | |
1667 | else | |
1668 | RETVAL = sim_io_write (simulator, PARM1, buf, PARM3); | |
1669 | zfree (buf); | |
1670 | break; | |
1671 | } | |
1672 | #endif | |
1673 | ||
1674 | #ifdef TARGET_SYS_lseek | |
1675 | case TARGET_SYS_lseek: | |
1676 | RETVAL = sim_io_lseek (simulator, PARM1, PARM2, PARM3); | |
1677 | break; | |
1678 | #endif | |
1679 | ||
1680 | #ifdef TARGET_SYS_close | |
1681 | case TARGET_SYS_close: | |
1682 | RETVAL = sim_io_close (simulator, PARM1); | |
1683 | break; | |
1684 | #endif | |
1685 | ||
1686 | #ifdef TARGET_SYS_open | |
1687 | case TARGET_SYS_open: | |
1688 | { | |
1689 | char *buf = fetch_str (simulator, PARM1); | |
1690 | RETVAL = sim_io_open (simulator, buf, PARM2); | |
1691 | zfree (buf); | |
1692 | break; | |
1693 | } | |
1694 | #endif | |
1695 | ||
1696 | #ifdef TARGET_SYS_exit | |
1697 | case TARGET_SYS_exit: | |
1698 | if ((PARM1 & 0xffff0000) == 0xdead0000 && (PARM1 & 0xffff) != 0) | |
1699 | /* get signal encoded by kill */ | |
1700 | sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC, | |
1701 | sim_signalled, PARM1 & 0xffff); | |
1702 | else if (PARM1 == 0xdead) | |
1703 | /* old libraries */ | |
1704 | sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC, | |
1705 | sim_stopped, SIM_SIGABRT); | |
1706 | else | |
1707 | /* PARM1 has exit status */ | |
1708 | sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC, | |
1709 | sim_exited, PARM1); | |
1710 | break; | |
1711 | #endif | |
1712 | ||
1713 | #if !defined(__GO32__) && !defined(_WIN32) | |
1714 | #ifdef TARGET_SYS_stat | |
1715 | case TARGET_SYS_stat: /* added at hmsi */ | |
1716 | /* stat system call */ | |
1717 | { | |
1718 | struct stat host_stat; | |
1719 | reg_t buf; | |
1720 | char *path = fetch_str (simulator, PARM1); | |
1721 | ||
1722 | RETVAL = stat (path, &host_stat); | |
1723 | ||
1724 | zfree (path); | |
1725 | buf = PARM2; | |
1726 | ||
1727 | /* Just wild-assed guesses. */ | |
1728 | store_mem (buf, 2, host_stat.st_dev); | |
1729 | store_mem (buf + 2, 2, host_stat.st_ino); | |
1730 | store_mem (buf + 4, 4, host_stat.st_mode); | |
1731 | store_mem (buf + 8, 2, host_stat.st_nlink); | |
1732 | store_mem (buf + 10, 2, host_stat.st_uid); | |
1733 | store_mem (buf + 12, 2, host_stat.st_gid); | |
1734 | store_mem (buf + 14, 2, host_stat.st_rdev); | |
1735 | store_mem (buf + 16, 4, host_stat.st_size); | |
1736 | store_mem (buf + 20, 4, host_stat.st_atime); | |
1737 | store_mem (buf + 28, 4, host_stat.st_mtime); | |
1738 | store_mem (buf + 36, 4, host_stat.st_ctime); | |
1739 | } | |
1740 | break; | |
1741 | #endif | |
1742 | #endif | |
1743 | ||
1744 | #ifdef HAVE_CHOWN | |
1745 | #ifdef TARGET_SYS_chown | |
1746 | case TARGET_SYS_chown: | |
1747 | { | |
1748 | char *path = fetch_str (simulator, PARM1); | |
1749 | RETVAL = chown (path, PARM2, PARM3); | |
1750 | zfree (path); | |
1751 | } | |
1752 | break; | |
1753 | #endif | |
1754 | #endif | |
1755 | ||
1756 | #if HAVE_CHMOD | |
1757 | #ifdef TARGET_SYS_chmod | |
1758 | case TARGET_SYS_chmod: | |
1759 | { | |
1760 | char *path = fetch_str (simulator, PARM1); | |
1761 | RETVAL = chmod (path, PARM2); | |
1762 | zfree (path); | |
1763 | } | |
1764 | break; | |
1765 | #endif | |
1766 | #endif | |
1767 | ||
1768 | #ifdef TARGET_SYS_time | |
1769 | #if HAVE_TIME | |
1770 | case TARGET_SYS_time: | |
1771 | { | |
1772 | time_t now; | |
1773 | RETVAL = time (&now); | |
1774 | store_mem (PARM1, 4, now); | |
1775 | } | |
1776 | break; | |
1777 | #endif | |
1778 | #endif | |
1779 | ||
1780 | #if !defined(__GO32__) && !defined(_WIN32) | |
1781 | #ifdef TARGET_SYS_times | |
1782 | case TARGET_SYS_times: | |
1783 | { | |
1784 | struct tms tms; | |
1785 | RETVAL = times (&tms); | |
1786 | store_mem (PARM1, 4, tms.tms_utime); | |
1787 | store_mem (PARM1 + 4, 4, tms.tms_stime); | |
1788 | store_mem (PARM1 + 8, 4, tms.tms_cutime); | |
1789 | store_mem (PARM1 + 12, 4, tms.tms_cstime); | |
1790 | break; | |
1791 | } | |
1792 | #endif | |
1793 | #endif | |
1794 | ||
1795 | #ifdef TARGET_SYS_gettimeofday | |
1796 | #if !defined(__GO32__) && !defined(_WIN32) | |
1797 | case TARGET_SYS_gettimeofday: | |
1798 | { | |
1799 | struct timeval t; | |
1800 | struct timezone tz; | |
1801 | RETVAL = gettimeofday (&t, &tz); | |
1802 | store_mem (PARM1, 4, t.tv_sec); | |
1803 | store_mem (PARM1 + 4, 4, t.tv_usec); | |
1804 | store_mem (PARM2, 4, tz.tz_minuteswest); | |
1805 | store_mem (PARM2 + 4, 4, tz.tz_dsttime); | |
1806 | break; | |
1807 | } | |
1808 | #endif | |
1809 | #endif | |
1810 | ||
1811 | #ifdef TARGET_SYS_utime | |
1812 | #if HAVE_UTIME | |
1813 | case TARGET_SYS_utime: | |
1814 | { | |
1815 | /* Cast the second argument to void *, to avoid type mismatch | |
1816 | if a prototype is present. */ | |
1817 | sim_io_error (simulator, "Utime not supported"); | |
1818 | /* RETVAL = utime (path, (void *) MEMPTR (PARM2)); */ | |
1819 | } | |
1820 | break; | |
1821 | #endif | |
1822 | #endif | |
1823 | ||
1824 | default: | |
1825 | abort (); | |
1826 | } | |
1827 | RETERR = errno; | |
1828 | errno = save_errno; | |
1829 | ||
1830 | return 4; | |
1831 | } | |
1832 | else | |
1833 | { /* Trap 0 -> 30 */ | |
1834 | EIPC = PC + 4; | |
1835 | EIPSW = PSW; | |
1836 | /* Mask out EICC */ | |
1837 | ECR &= 0xffff0000; | |
1838 | ECR |= 0x40 + OP[0]; | |
1839 | /* Flag that we are now doing exception processing. */ | |
1840 | PSW |= PSW_EP | PSW_ID; | |
2e8162ce | 1841 | PC = (OP[0] < 0x10) ? 0x40 : 0x50; |
c906108c SS |
1842 | |
1843 | return 0; | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | /* tst1 reg2, [reg1] */ | |
1848 | int | |
1849 | OP_E607E0 (void) | |
1850 | { | |
1851 | int temp; | |
1852 | ||
1853 | trace_input ("tst1", OP_BIT, 1); | |
1854 | ||
1855 | temp = load_mem (State.regs[ OP[0] ], 1); | |
1856 | ||
1857 | PSW &= ~PSW_Z; | |
30458d39 | 1858 | if ((temp & (1 << (State.regs[ OP[1] ] & 0x7))) == 0) |
c906108c SS |
1859 | PSW |= PSW_Z; |
1860 | ||
1861 | trace_output (OP_BIT); | |
1862 | ||
1863 | return 4; | |
1864 | } | |
1865 | ||
1866 | /* mulu reg1, reg2, reg3 */ | |
1867 | int | |
1868 | OP_22207E0 (void) | |
1869 | { | |
1870 | trace_input ("mulu", OP_REG_REG_REG, 0); | |
1871 | ||
0da2b665 | 1872 | Multiply64 (0, State.regs[ OP[0] ]); |
c906108c SS |
1873 | |
1874 | trace_output (OP_REG_REG_REG); | |
1875 | ||
1876 | return 4; | |
1877 | } | |
1878 | ||
1879 | #define BIT_CHANGE_OP( name, binop ) \ | |
1880 | unsigned int bit; \ | |
1881 | unsigned int temp; \ | |
1882 | \ | |
1883 | trace_input (name, OP_BIT_CHANGE, 0); \ | |
1884 | \ | |
30458d39 | 1885 | bit = 1 << (State.regs[ OP[1] ] & 0x7); \ |
c906108c SS |
1886 | temp = load_mem (State.regs[ OP[0] ], 1); \ |
1887 | \ | |
1888 | PSW &= ~PSW_Z; \ | |
1889 | if ((temp & bit) == 0) \ | |
1890 | PSW |= PSW_Z; \ | |
1891 | temp binop bit; \ | |
1892 | \ | |
1893 | store_mem (State.regs[ OP[0] ], 1, temp); \ | |
1894 | \ | |
1895 | trace_output (OP_BIT_CHANGE); \ | |
1896 | \ | |
1897 | return 4; | |
1898 | ||
1899 | /* clr1 reg2, [reg1] */ | |
1900 | int | |
1901 | OP_E407E0 (void) | |
1902 | { | |
1903 | BIT_CHANGE_OP ("clr1", &= ~ ); | |
1904 | } | |
1905 | ||
1906 | /* not1 reg2, [reg1] */ | |
1907 | int | |
1908 | OP_E207E0 (void) | |
1909 | { | |
1910 | BIT_CHANGE_OP ("not1", ^= ); | |
1911 | } | |
1912 | ||
1913 | /* set1 */ | |
1914 | int | |
1915 | OP_E007E0 (void) | |
1916 | { | |
1917 | BIT_CHANGE_OP ("set1", |= ); | |
1918 | } | |
1919 | ||
1920 | /* sasf */ | |
1921 | int | |
1922 | OP_20007E0 (void) | |
1923 | { | |
1924 | trace_input ("sasf", OP_EX1, 0); | |
1925 | ||
1926 | State.regs[ OP[1] ] = (State.regs[ OP[1] ] << 1) | condition_met (OP[0]); | |
1927 | ||
1928 | trace_output (OP_EX1); | |
1929 | ||
1930 | return 4; | |
1931 | } | |
1932 | ||
1933 | /* This function is courtesy of Sugimoto at NEC, via Seow Tan | |
1934 | (Soew_Tan@el.nec.com) */ | |
1935 | void | |
1936 | divun | |
1937 | ( | |
1938 | unsigned int N, | |
1939 | unsigned long int als, | |
1940 | unsigned long int sfi, | |
1941 | unsigned32 /*unsigned long int*/ * quotient_ptr, | |
1942 | unsigned32 /*unsigned long int*/ * remainder_ptr, | |
0da2b665 | 1943 | int * overflow_ptr |
c906108c SS |
1944 | ) |
1945 | { | |
1946 | unsigned long ald = sfi >> (N - 1); | |
1947 | unsigned long alo = als; | |
1948 | unsigned int Q = 1; | |
1949 | unsigned int C; | |
1950 | unsigned int S = 0; | |
1951 | unsigned int i; | |
1952 | unsigned int R1 = 1; | |
1953 | unsigned int DBZ = (als == 0) ? 1 : 0; | |
1954 | unsigned long alt = Q ? ~als : als; | |
1955 | ||
1956 | /* 1st Loop */ | |
1957 | alo = ald + alt + Q; | |
1958 | C = (((alt >> 31) & (ald >> 31)) | |
1959 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
1960 | C = C ^ Q; | |
1961 | Q = ~(C ^ S) & 1; | |
1962 | R1 = (alo == 0) ? 0 : (R1 & Q); | |
1963 | if ((S ^ (alo>>31)) && !C) | |
1964 | { | |
1965 | DBZ = 1; | |
1966 | } | |
1967 | S = alo >> 31; | |
1968 | sfi = (sfi << (32-N+1)) | Q; | |
1969 | ald = (alo << 1) | (sfi >> 31); | |
1970 | ||
1971 | /* 2nd - N-1th Loop */ | |
1972 | for (i = 2; i < N; i++) | |
1973 | { | |
1974 | alt = Q ? ~als : als; | |
1975 | alo = ald + alt + Q; | |
1976 | C = (((alt >> 31) & (ald >> 31)) | |
1977 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
1978 | C = C ^ Q; | |
1979 | Q = ~(C ^ S) & 1; | |
1980 | R1 = (alo == 0) ? 0 : (R1 & Q); | |
1981 | if ((S ^ (alo>>31)) && !C && !DBZ) | |
1982 | { | |
1983 | DBZ = 1; | |
1984 | } | |
1985 | S = alo >> 31; | |
1986 | sfi = (sfi << 1) | Q; | |
1987 | ald = (alo << 1) | (sfi >> 31); | |
1988 | } | |
1989 | ||
1990 | /* Nth Loop */ | |
1991 | alt = Q ? ~als : als; | |
1992 | alo = ald + alt + Q; | |
1993 | C = (((alt >> 31) & (ald >> 31)) | |
1994 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
1995 | C = C ^ Q; | |
1996 | Q = ~(C ^ S) & 1; | |
1997 | R1 = (alo == 0) ? 0 : (R1 & Q); | |
1998 | if ((S ^ (alo>>31)) && !C) | |
1999 | { | |
2000 | DBZ = 1; | |
2001 | } | |
2002 | ||
2003 | * quotient_ptr = (sfi << 1) | Q; | |
2004 | * remainder_ptr = Q ? alo : (alo + als); | |
2005 | * overflow_ptr = DBZ | R1; | |
2006 | } | |
2007 | ||
2008 | /* This function is courtesy of Sugimoto at NEC, via Seow Tan (Soew_Tan@el.nec.com) */ | |
2009 | void | |
2010 | divn | |
2011 | ( | |
2012 | unsigned int N, | |
2013 | unsigned long int als, | |
2014 | unsigned long int sfi, | |
2015 | signed32 /*signed long int*/ * quotient_ptr, | |
2016 | signed32 /*signed long int*/ * remainder_ptr, | |
0da2b665 | 2017 | int * overflow_ptr |
c906108c SS |
2018 | ) |
2019 | { | |
2020 | unsigned long ald = (signed long) sfi >> (N - 1); | |
2021 | unsigned long alo = als; | |
2022 | unsigned int SS = als >> 31; | |
2023 | unsigned int SD = sfi >> 31; | |
2024 | unsigned int R1 = 1; | |
2025 | unsigned int OV; | |
2026 | unsigned int DBZ = als == 0 ? 1 : 0; | |
2027 | unsigned int Q = ~(SS ^ SD) & 1; | |
2028 | unsigned int C; | |
2029 | unsigned int S; | |
2030 | unsigned int i; | |
2031 | unsigned long alt = Q ? ~als : als; | |
2032 | ||
2033 | ||
2034 | /* 1st Loop */ | |
2035 | ||
2036 | alo = ald + alt + Q; | |
2037 | C = (((alt >> 31) & (ald >> 31)) | |
2038 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
2039 | Q = C ^ SS; | |
2040 | R1 = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD))); | |
2041 | S = alo >> 31; | |
2042 | sfi = (sfi << (32-N+1)) | Q; | |
2043 | ald = (alo << 1) | (sfi >> 31); | |
2044 | if ((alo >> 31) ^ (ald >> 31)) | |
2045 | { | |
2046 | DBZ = 1; | |
2047 | } | |
2048 | ||
2049 | /* 2nd - N-1th Loop */ | |
2050 | ||
2051 | for (i = 2; i < N; i++) | |
2052 | { | |
2053 | alt = Q ? ~als : als; | |
2054 | alo = ald + alt + Q; | |
2055 | C = (((alt >> 31) & (ald >> 31)) | |
2056 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
2057 | Q = C ^ SS; | |
2058 | R1 = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD))); | |
2059 | S = alo >> 31; | |
2060 | sfi = (sfi << 1) | Q; | |
2061 | ald = (alo << 1) | (sfi >> 31); | |
2062 | if ((alo >> 31) ^ (ald >> 31)) | |
2063 | { | |
2064 | DBZ = 1; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | /* Nth Loop */ | |
2069 | alt = Q ? ~als : als; | |
2070 | alo = ald + alt + Q; | |
2071 | C = (((alt >> 31) & (ald >> 31)) | |
2072 | | (((alt >> 31) ^ (ald >> 31)) & (~alo >> 31))); | |
2073 | Q = C ^ SS; | |
2074 | R1 = (alo == 0) ? 0 : (R1 & (Q ^ (SS ^ SD))); | |
2075 | sfi = (sfi << (32-N+1)); | |
2076 | ald = alo; | |
2077 | ||
2078 | /* End */ | |
2079 | if (alo != 0) | |
2080 | { | |
2081 | alt = Q ? ~als : als; | |
2082 | alo = ald + alt + Q; | |
2083 | } | |
2084 | R1 = R1 & ((~alo >> 31) ^ SD); | |
2085 | if ((alo != 0) && ((Q ^ (SS ^ SD)) ^ R1)) alo = ald; | |
2086 | if (N != 32) | |
2087 | ald = sfi = (long) ((sfi >> 1) | (SS ^ SD) << 31) >> (32-N-1) | Q; | |
2088 | else | |
2089 | ald = sfi = sfi | Q; | |
2090 | ||
2091 | OV = DBZ | ((alo == 0) ? 0 : R1); | |
2092 | ||
2093 | * remainder_ptr = alo; | |
2094 | ||
2095 | /* Adj */ | |
2096 | if (((alo != 0) && ((SS ^ SD) ^ R1)) | |
2097 | || ((alo == 0) && (SS ^ R1))) | |
2098 | alo = ald + 1; | |
2099 | else | |
2100 | alo = ald; | |
2101 | ||
2102 | OV = (DBZ | R1) ? OV : ((alo >> 31) & (~ald >> 31)); | |
2103 | ||
2104 | * quotient_ptr = alo; | |
2105 | * overflow_ptr = OV; | |
2106 | } | |
2107 | ||
2108 | /* sdivun imm5, reg1, reg2, reg3 */ | |
2109 | int | |
2110 | OP_1C207E0 (void) | |
2111 | { | |
2112 | unsigned32 /*unsigned long int*/ quotient; | |
2113 | unsigned32 /*unsigned long int*/ remainder; | |
2114 | unsigned long int divide_by; | |
2115 | unsigned long int divide_this; | |
0da2b665 | 2116 | int overflow = 0; |
c906108c SS |
2117 | unsigned int imm5; |
2118 | ||
2119 | trace_input ("sdivun", OP_IMM_REG_REG_REG, 0); | |
2120 | ||
2121 | imm5 = 32 - ((OP[3] & 0x3c0000) >> 17); | |
2122 | ||
2123 | divide_by = State.regs[ OP[0] ]; | |
2124 | divide_this = State.regs[ OP[1] ] << imm5; | |
2125 | ||
2126 | divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow); | |
2127 | ||
2128 | State.regs[ OP[1] ] = quotient; | |
2129 | State.regs[ OP[2] >> 11 ] = remainder; | |
2130 | ||
2131 | /* Set condition codes. */ | |
2132 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2133 | ||
2134 | if (overflow) PSW |= PSW_OV; | |
2135 | if (quotient == 0) PSW |= PSW_Z; | |
2136 | if (quotient & 0x80000000) PSW |= PSW_S; | |
2137 | ||
2138 | trace_output (OP_IMM_REG_REG_REG); | |
2139 | ||
2140 | return 4; | |
2141 | } | |
2142 | ||
2143 | /* sdivn imm5, reg1, reg2, reg3 */ | |
2144 | int | |
2145 | OP_1C007E0 (void) | |
2146 | { | |
2147 | signed32 /*signed long int*/ quotient; | |
2148 | signed32 /*signed long int*/ remainder; | |
2149 | signed long int divide_by; | |
2150 | signed long int divide_this; | |
0da2b665 | 2151 | int overflow = 0; |
c906108c SS |
2152 | unsigned int imm5; |
2153 | ||
2154 | trace_input ("sdivn", OP_IMM_REG_REG_REG, 0); | |
2155 | ||
2156 | imm5 = 32 - ((OP[3] & 0x3c0000) >> 17); | |
2157 | ||
2158 | divide_by = State.regs[ OP[0] ]; | |
2159 | divide_this = State.regs[ OP[1] ] << imm5; | |
2160 | ||
2161 | divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow); | |
2162 | ||
2163 | State.regs[ OP[1] ] = quotient; | |
2164 | State.regs[ OP[2] >> 11 ] = remainder; | |
2165 | ||
2166 | /* Set condition codes. */ | |
2167 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2168 | ||
2169 | if (overflow) PSW |= PSW_OV; | |
2170 | if (quotient == 0) PSW |= PSW_Z; | |
2171 | if (quotient < 0) PSW |= PSW_S; | |
2172 | ||
2173 | trace_output (OP_IMM_REG_REG_REG); | |
2174 | ||
2175 | return 4; | |
2176 | } | |
2177 | ||
2178 | /* sdivhun imm5, reg1, reg2, reg3 */ | |
2179 | int | |
2180 | OP_18207E0 (void) | |
2181 | { | |
2182 | unsigned32 /*unsigned long int*/ quotient; | |
2183 | unsigned32 /*unsigned long int*/ remainder; | |
2184 | unsigned long int divide_by; | |
2185 | unsigned long int divide_this; | |
0da2b665 | 2186 | int overflow = 0; |
c906108c SS |
2187 | unsigned int imm5; |
2188 | ||
2189 | trace_input ("sdivhun", OP_IMM_REG_REG_REG, 0); | |
2190 | ||
2191 | imm5 = 32 - ((OP[3] & 0x3c0000) >> 17); | |
2192 | ||
2193 | divide_by = State.regs[ OP[0] ] & 0xffff; | |
2194 | divide_this = State.regs[ OP[1] ] << imm5; | |
2195 | ||
2196 | divun (imm5, divide_by, divide_this, & quotient, & remainder, & overflow); | |
2197 | ||
2198 | State.regs[ OP[1] ] = quotient; | |
2199 | State.regs[ OP[2] >> 11 ] = remainder; | |
2200 | ||
2201 | /* Set condition codes. */ | |
2202 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2203 | ||
2204 | if (overflow) PSW |= PSW_OV; | |
2205 | if (quotient == 0) PSW |= PSW_Z; | |
2206 | if (quotient & 0x80000000) PSW |= PSW_S; | |
2207 | ||
2208 | trace_output (OP_IMM_REG_REG_REG); | |
2209 | ||
2210 | return 4; | |
2211 | } | |
2212 | ||
2213 | /* sdivhn imm5, reg1, reg2, reg3 */ | |
2214 | int | |
2215 | OP_18007E0 (void) | |
2216 | { | |
2217 | signed32 /*signed long int*/ quotient; | |
2218 | signed32 /*signed long int*/ remainder; | |
2219 | signed long int divide_by; | |
2220 | signed long int divide_this; | |
0da2b665 | 2221 | int overflow = 0; |
c906108c SS |
2222 | unsigned int imm5; |
2223 | ||
2224 | trace_input ("sdivhn", OP_IMM_REG_REG_REG, 0); | |
2225 | ||
2226 | imm5 = 32 - ((OP[3] & 0x3c0000) >> 17); | |
2227 | ||
2228 | divide_by = EXTEND16 (State.regs[ OP[0] ]); | |
2229 | divide_this = State.regs[ OP[1] ] << imm5; | |
2230 | ||
2231 | divn (imm5, divide_by, divide_this, & quotient, & remainder, & overflow); | |
2232 | ||
2233 | State.regs[ OP[1] ] = quotient; | |
2234 | State.regs[ OP[2] >> 11 ] = remainder; | |
2235 | ||
2236 | /* Set condition codes. */ | |
2237 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2238 | ||
2239 | if (overflow) PSW |= PSW_OV; | |
2240 | if (quotient == 0) PSW |= PSW_Z; | |
2241 | if (quotient < 0) PSW |= PSW_S; | |
2242 | ||
2243 | trace_output (OP_IMM_REG_REG_REG); | |
2244 | ||
2245 | return 4; | |
2246 | } | |
2247 | ||
2248 | /* divu reg1, reg2, reg3 */ | |
2249 | int | |
2250 | OP_2C207E0 (void) | |
2251 | { | |
2252 | unsigned long int quotient; | |
2253 | unsigned long int remainder; | |
2254 | unsigned long int divide_by; | |
2255 | unsigned long int divide_this; | |
0da2b665 | 2256 | int overflow = 0; |
c906108c SS |
2257 | |
2258 | trace_input ("divu", OP_REG_REG_REG, 0); | |
2259 | ||
2260 | /* Compute the result. */ | |
2261 | ||
2262 | divide_by = State.regs[ OP[0] ]; | |
2263 | divide_this = State.regs[ OP[1] ]; | |
2264 | ||
2265 | if (divide_by == 0) | |
2266 | { | |
0da2b665 | 2267 | overflow = 1; |
c906108c SS |
2268 | divide_by = 1; |
2269 | } | |
2270 | ||
2271 | State.regs[ OP[1] ] = quotient = divide_this / divide_by; | |
2272 | State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by; | |
2273 | ||
2274 | /* Set condition codes. */ | |
2275 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2276 | ||
2277 | if (overflow) PSW |= PSW_OV; | |
2278 | if (quotient == 0) PSW |= PSW_Z; | |
2279 | if (quotient & 0x80000000) PSW |= PSW_S; | |
2280 | ||
2281 | trace_output (OP_REG_REG_REG); | |
2282 | ||
2283 | return 4; | |
2284 | } | |
2285 | ||
2286 | /* div reg1, reg2, reg3 */ | |
2287 | int | |
2288 | OP_2C007E0 (void) | |
2289 | { | |
2290 | signed long int quotient; | |
2291 | signed long int remainder; | |
2292 | signed long int divide_by; | |
2293 | signed long int divide_this; | |
0da2b665 | 2294 | int overflow = 0; |
c906108c SS |
2295 | |
2296 | trace_input ("div", OP_REG_REG_REG, 0); | |
2297 | ||
2298 | /* Compute the result. */ | |
2299 | ||
2300 | divide_by = State.regs[ OP[0] ]; | |
2301 | divide_this = State.regs[ OP[1] ]; | |
2302 | ||
2303 | if (divide_by == 0 || (divide_by == -1 && divide_this == (1 << 31))) | |
2304 | { | |
0da2b665 | 2305 | overflow = 1; |
c906108c SS |
2306 | divide_by = 1; |
2307 | } | |
2308 | ||
2309 | State.regs[ OP[1] ] = quotient = divide_this / divide_by; | |
2310 | State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by; | |
2311 | ||
2312 | /* Set condition codes. */ | |
2313 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2314 | ||
2315 | if (overflow) PSW |= PSW_OV; | |
2316 | if (quotient == 0) PSW |= PSW_Z; | |
2317 | if (quotient < 0) PSW |= PSW_S; | |
2318 | ||
2319 | trace_output (OP_REG_REG_REG); | |
2320 | ||
2321 | return 4; | |
2322 | } | |
2323 | ||
2324 | /* divhu reg1, reg2, reg3 */ | |
2325 | int | |
2326 | OP_28207E0 (void) | |
2327 | { | |
2328 | unsigned long int quotient; | |
2329 | unsigned long int remainder; | |
2330 | unsigned long int divide_by; | |
2331 | unsigned long int divide_this; | |
0da2b665 | 2332 | int overflow = 0; |
c906108c SS |
2333 | |
2334 | trace_input ("divhu", OP_REG_REG_REG, 0); | |
2335 | ||
2336 | /* Compute the result. */ | |
2337 | ||
2338 | divide_by = State.regs[ OP[0] ] & 0xffff; | |
2339 | divide_this = State.regs[ OP[1] ]; | |
2340 | ||
2341 | if (divide_by == 0) | |
2342 | { | |
0da2b665 | 2343 | overflow = 1; |
c906108c SS |
2344 | divide_by = 1; |
2345 | } | |
2346 | ||
2347 | State.regs[ OP[1] ] = quotient = divide_this / divide_by; | |
2348 | State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by; | |
2349 | ||
2350 | /* Set condition codes. */ | |
2351 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2352 | ||
2353 | if (overflow) PSW |= PSW_OV; | |
2354 | if (quotient == 0) PSW |= PSW_Z; | |
2355 | if (quotient & 0x80000000) PSW |= PSW_S; | |
2356 | ||
2357 | trace_output (OP_REG_REG_REG); | |
2358 | ||
2359 | return 4; | |
2360 | } | |
2361 | ||
2362 | /* divh reg1, reg2, reg3 */ | |
2363 | int | |
2364 | OP_28007E0 (void) | |
2365 | { | |
2366 | signed long int quotient; | |
2367 | signed long int remainder; | |
2368 | signed long int divide_by; | |
2369 | signed long int divide_this; | |
0da2b665 | 2370 | int overflow = 0; |
c906108c SS |
2371 | |
2372 | trace_input ("divh", OP_REG_REG_REG, 0); | |
2373 | ||
2374 | /* Compute the result. */ | |
2375 | ||
2376 | divide_by = State.regs[ OP[0] ]; | |
2377 | divide_this = EXTEND16 (State.regs[ OP[1] ]); | |
2378 | ||
2379 | if (divide_by == 0 || (divide_by == -1 && divide_this == (1 << 31))) | |
2380 | { | |
0da2b665 | 2381 | overflow = 1; |
c906108c SS |
2382 | divide_by = 1; |
2383 | } | |
2384 | ||
2385 | State.regs[ OP[1] ] = quotient = divide_this / divide_by; | |
2386 | State.regs[ OP[2] >> 11 ] = remainder = divide_this % divide_by; | |
2387 | ||
2388 | /* Set condition codes. */ | |
2389 | PSW &= ~(PSW_Z | PSW_S | PSW_OV); | |
2390 | ||
2391 | if (overflow) PSW |= PSW_OV; | |
2392 | if (quotient == 0) PSW |= PSW_Z; | |
2393 | if (quotient < 0) PSW |= PSW_S; | |
2394 | ||
2395 | trace_output (OP_REG_REG_REG); | |
2396 | ||
2397 | return 4; | |
2398 | } | |
2399 | ||
2400 | /* mulu imm9, reg2, reg3 */ | |
2401 | int | |
2402 | OP_24207E0 (void) | |
2403 | { | |
2404 | trace_input ("mulu", OP_IMM_REG_REG, 0); | |
2405 | ||
0da2b665 | 2406 | Multiply64 (0, (OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0)); |
c906108c SS |
2407 | |
2408 | trace_output (OP_IMM_REG_REG); | |
2409 | ||
2410 | return 4; | |
2411 | } | |
2412 | ||
2413 | /* mul imm9, reg2, reg3 */ | |
2414 | int | |
2415 | OP_24007E0 (void) | |
2416 | { | |
2417 | trace_input ("mul", OP_IMM_REG_REG, 0); | |
2418 | ||
0da2b665 | 2419 | Multiply64 (1, SEXT9 ((OP[3] & 0x1f) | ((OP[3] >> 13) & 0x1e0))); |
c906108c SS |
2420 | |
2421 | trace_output (OP_IMM_REG_REG); | |
2422 | ||
2423 | return 4; | |
2424 | } | |
2425 | ||
2426 | /* ld.hu */ | |
2427 | int | |
2428 | OP_107E0 (void) | |
2429 | { | |
2430 | int adr; | |
2431 | ||
2432 | trace_input ("ld.hu", OP_LOAD32, 2); | |
2433 | ||
2434 | adr = State.regs[ OP[0] ] + EXTEND16 (OP[2] & ~1); | |
2435 | adr &= ~0x1; | |
2436 | ||
2437 | State.regs[ OP[1] ] = load_mem (adr, 2); | |
2438 | ||
2439 | trace_output (OP_LOAD32); | |
2440 | ||
2441 | return 4; | |
2442 | } | |
2443 | ||
2444 | ||
2445 | /* ld.bu */ | |
2446 | int | |
2447 | OP_10780 (void) | |
2448 | { | |
2449 | int adr; | |
2450 | ||
2451 | trace_input ("ld.bu", OP_LOAD32, 1); | |
2452 | ||
2453 | adr = (State.regs[ OP[0] ] | |
2454 | + (EXTEND16 (OP[2] & ~1) | ((OP[3] >> 5) & 1))); | |
2455 | ||
2456 | State.regs[ OP[1] ] = load_mem (adr, 1); | |
2457 | ||
2458 | trace_output (OP_LOAD32); | |
2459 | ||
2460 | return 4; | |
2461 | } | |
2462 | ||
2463 | /* prepare list12, imm5, imm32 */ | |
2464 | int | |
2465 | OP_1B0780 (void) | |
2466 | { | |
2467 | int i; | |
2468 | ||
2469 | trace_input ("prepare", OP_PUSHPOP1, 0); | |
2470 | ||
2471 | /* Store the registers with lower number registers being placed at higher addresses. */ | |
2472 | for (i = 0; i < 12; i++) | |
2473 | if ((OP[3] & (1 << type1_regs[ i ]))) | |
2474 | { | |
2475 | SP -= 4; | |
2476 | store_mem (SP, 4, State.regs[ 20 + i ]); | |
2477 | } | |
2478 | ||
2479 | SP -= (OP[3] & 0x3e) << 1; | |
2480 | ||
2481 | EP = load_mem (PC + 4, 4); | |
2482 | ||
2483 | trace_output (OP_PUSHPOP1); | |
2484 | ||
2485 | return 8; | |
2486 | } | |
2487 | ||
2488 | /* prepare list12, imm5, imm16-32 */ | |
2489 | int | |
2490 | OP_130780 (void) | |
2491 | { | |
2492 | int i; | |
2493 | ||
2494 | trace_input ("prepare", OP_PUSHPOP1, 0); | |
2495 | ||
2496 | /* Store the registers with lower number registers being placed at higher addresses. */ | |
2497 | for (i = 0; i < 12; i++) | |
2498 | if ((OP[3] & (1 << type1_regs[ i ]))) | |
2499 | { | |
2500 | SP -= 4; | |
2501 | store_mem (SP, 4, State.regs[ 20 + i ]); | |
2502 | } | |
2503 | ||
2504 | SP -= (OP[3] & 0x3e) << 1; | |
2505 | ||
2506 | EP = load_mem (PC + 4, 2) << 16; | |
2507 | ||
2508 | trace_output (OP_PUSHPOP1); | |
2509 | ||
2510 | return 6; | |
2511 | } | |
2512 | ||
2513 | /* prepare list12, imm5, imm16 */ | |
2514 | int | |
2515 | OP_B0780 (void) | |
2516 | { | |
2517 | int i; | |
2518 | ||
2519 | trace_input ("prepare", OP_PUSHPOP1, 0); | |
2520 | ||
2521 | /* Store the registers with lower number registers being placed at higher addresses. */ | |
2522 | for (i = 0; i < 12; i++) | |
2523 | if ((OP[3] & (1 << type1_regs[ i ]))) | |
2524 | { | |
2525 | SP -= 4; | |
2526 | store_mem (SP, 4, State.regs[ 20 + i ]); | |
2527 | } | |
2528 | ||
2529 | SP -= (OP[3] & 0x3e) << 1; | |
2530 | ||
2531 | EP = EXTEND16 (load_mem (PC + 4, 2)); | |
2532 | ||
2533 | trace_output (OP_PUSHPOP1); | |
2534 | ||
2535 | return 6; | |
2536 | } | |
2537 | ||
2538 | /* prepare list12, imm5, sp */ | |
2539 | int | |
2540 | OP_30780 (void) | |
2541 | { | |
2542 | int i; | |
2543 | ||
2544 | trace_input ("prepare", OP_PUSHPOP1, 0); | |
2545 | ||
2546 | /* Store the registers with lower number registers being placed at higher addresses. */ | |
2547 | for (i = 0; i < 12; i++) | |
2548 | if ((OP[3] & (1 << type1_regs[ i ]))) | |
2549 | { | |
2550 | SP -= 4; | |
2551 | store_mem (SP, 4, State.regs[ 20 + i ]); | |
2552 | } | |
2553 | ||
2554 | SP -= (OP[3] & 0x3e) << 1; | |
2555 | ||
2556 | EP = SP; | |
2557 | ||
2558 | trace_output (OP_PUSHPOP1); | |
2559 | ||
2560 | return 4; | |
2561 | } | |
2562 | ||
2563 | /* mul reg1, reg2, reg3 */ | |
2564 | int | |
2565 | OP_22007E0 (void) | |
2566 | { | |
2567 | trace_input ("mul", OP_REG_REG_REG, 0); | |
2568 | ||
0da2b665 | 2569 | Multiply64 (1, State.regs[ OP[0] ]); |
c906108c SS |
2570 | |
2571 | trace_output (OP_REG_REG_REG); | |
2572 | ||
2573 | return 4; | |
2574 | } | |
2575 | ||
2576 | /* popmh list18 */ | |
2577 | int | |
2578 | OP_307F0 (void) | |
2579 | { | |
2580 | int i; | |
2581 | ||
2582 | trace_input ("popmh", OP_PUSHPOP2, 0); | |
2583 | ||
2584 | if (OP[3] & (1 << 19)) | |
2585 | { | |
2586 | if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0)) | |
2587 | { | |
2588 | FEPSW = load_mem ( SP & ~ 3, 4); | |
2589 | FEPC = load_mem ((SP + 4) & ~ 3, 4); | |
2590 | } | |
2591 | else | |
2592 | { | |
2593 | EIPSW = load_mem ( SP & ~ 3, 4); | |
2594 | EIPC = load_mem ((SP + 4) & ~ 3, 4); | |
2595 | } | |
2596 | ||
2597 | SP += 8; | |
2598 | } | |
2599 | ||
2600 | /* Load the registers with lower number registers being retrieved from higher addresses. */ | |
2601 | for (i = 16; i--;) | |
2602 | if ((OP[3] & (1 << type2_regs[ i ]))) | |
2603 | { | |
2604 | State.regs[ i + 16 ] = load_mem (SP & ~ 3, 4); | |
2605 | SP += 4; | |
2606 | } | |
2607 | ||
2608 | trace_output (OP_PUSHPOP2); | |
2609 | ||
2610 | return 4; | |
2611 | } | |
2612 | ||
2613 | /* popml lsit18 */ | |
2614 | int | |
2615 | OP_107F0 (void) | |
2616 | { | |
2617 | int i; | |
2618 | ||
2619 | trace_input ("popml", OP_PUSHPOP3, 0); | |
2620 | ||
2621 | if (OP[3] & (1 << 19)) | |
2622 | { | |
2623 | if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0)) | |
2624 | { | |
2625 | FEPSW = load_mem ( SP & ~ 3, 4); | |
2626 | FEPC = load_mem ((SP + 4) & ~ 3, 4); | |
2627 | } | |
2628 | else | |
2629 | { | |
2630 | EIPSW = load_mem ( SP & ~ 3, 4); | |
2631 | EIPC = load_mem ((SP + 4) & ~ 3, 4); | |
2632 | } | |
2633 | ||
2634 | SP += 8; | |
2635 | } | |
2636 | ||
2637 | if (OP[3] & (1 << 3)) | |
2638 | { | |
2639 | PSW = load_mem (SP & ~ 3, 4); | |
2640 | SP += 4; | |
2641 | } | |
2642 | ||
2643 | /* Load the registers with lower number registers being retrieved from higher addresses. */ | |
2644 | for (i = 15; i--;) | |
2645 | if ((OP[3] & (1 << type3_regs[ i ]))) | |
2646 | { | |
2647 | State.regs[ i + 1 ] = load_mem (SP & ~ 3, 4); | |
2648 | SP += 4; | |
2649 | } | |
2650 | ||
2651 | trace_output (OP_PUSHPOP2); | |
2652 | ||
2653 | return 4; | |
2654 | } | |
2655 | ||
2656 | /* pushmh list18 */ | |
2657 | int | |
2658 | OP_307E0 (void) | |
2659 | { | |
2660 | int i; | |
2661 | ||
2662 | trace_input ("pushmh", OP_PUSHPOP2, 0); | |
2663 | ||
2664 | /* Store the registers with lower number registers being placed at higher addresses. */ | |
2665 | for (i = 0; i < 16; i++) | |
2666 | if ((OP[3] & (1 << type2_regs[ i ]))) | |
2667 | { | |
2668 | SP -= 4; | |
2669 | store_mem (SP & ~ 3, 4, State.regs[ i + 16 ]); | |
2670 | } | |
2671 | ||
2672 | if (OP[3] & (1 << 19)) | |
2673 | { | |
2674 | SP -= 8; | |
2675 | ||
2676 | if ((PSW & PSW_NP) && ((PSW & PSW_EP) == 0)) | |
2677 | { | |
2678 | store_mem ((SP + 4) & ~ 3, 4, FEPC); | |
2679 | store_mem ( SP & ~ 3, 4, FEPSW); | |
2680 | } | |
2681 | else | |
2682 | { | |
2683 | store_mem ((SP + 4) & ~ 3, 4, EIPC); | |
2684 | store_mem ( SP & ~ 3, 4, EIPSW); | |
2685 | } | |
2686 | } | |
2687 | ||
2688 | trace_output (OP_PUSHPOP2); | |
2689 | ||
2690 | return 4; | |
2691 | } | |
2692 |