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c906108c SS |
1 | #include <signal.h> |
2 | #include "sysdep.h" | |
3 | #include "bfd.h" | |
4 | ||
5 | #include "mn10200_sim.h" | |
6 | ||
7a292a7a SS |
7 | #ifdef NEED_UI_LOOP_HOOK |
8 | /* How often to run the ui_loop update, when in use */ | |
9 | #define UI_LOOP_POLL_INTERVAL 0x60000 | |
10 | ||
11 | /* Counter for the ui_loop_hook update */ | |
12 | static long ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL; | |
13 | ||
14 | /* Actual hook to call to run through gdb's gui event loop */ | |
0aaa4a81 | 15 | extern int (*deprecated_ui_loop_hook) (int); |
7a292a7a SS |
16 | #endif /* NEED_UI_LOOP_HOOK */ |
17 | ||
c906108c SS |
18 | host_callback *mn10200_callback; |
19 | int mn10200_debug; | |
20 | static SIM_OPEN_KIND sim_kind; | |
21 | static char *myname; | |
22 | ||
23 | static void dispatch PARAMS ((uint32, uint32, int)); | |
24 | static long hash PARAMS ((long)); | |
25 | static void init_system PARAMS ((void)); | |
26 | #define MAX_HASH 127 | |
27 | ||
28 | struct hash_entry | |
29 | { | |
30 | struct hash_entry *next; | |
31 | long opcode; | |
32 | long mask; | |
33 | struct simops *ops; | |
34 | #ifdef HASH_STAT | |
35 | unsigned long count; | |
36 | #endif | |
37 | }; | |
38 | ||
39 | int max_mem = 0; | |
40 | struct hash_entry hash_table[MAX_HASH+1]; | |
41 | ||
42 | ||
43 | /* This probably doesn't do a very good job at bucket filling, but | |
44 | it's simple... */ | |
45 | static INLINE long | |
46 | hash(insn) | |
47 | long insn; | |
48 | { | |
49 | /* These are one byte insns. */ | |
50 | if ((insn & 0xffffff00) == 0x00) | |
51 | { | |
52 | if ((insn & 0xf0) != 0x80) | |
53 | return ((insn & 0xf0) >> 4) & 0x7f; | |
54 | ||
55 | if ((insn & 0xf0) == 0x80 | |
56 | && (insn & 0x0c) >> 2 != (insn & 0x03)) | |
57 | return (insn & 0xf0) & 0x7f; | |
58 | ||
59 | return (insn & 0xff) & 0x7f; | |
60 | } | |
61 | ||
62 | if ((insn & 0xffff0000) == 0) | |
63 | { | |
64 | if ((insn & 0xf000) == 0xd000) | |
65 | return ((insn & 0xfc00) >> 10) & 0x7f; | |
66 | ||
67 | if ((insn & 0xf000) == 0xe000) | |
68 | return ((insn & 0xff00) >> 8) & 0x7f; | |
69 | ||
70 | if ((insn & 0xf200) == 0xf200) | |
71 | return ((insn & 0xfff0) >> 4) & 0x7f; | |
72 | ||
73 | if ((insn & 0xc000) == 0x4000 | |
74 | || (insn & 0xf000) == 0x8000) | |
75 | return ((insn & 0xf000) >> 8) & 0x7f; | |
76 | ||
77 | if ((insn & 0xf200) == 0xf000) | |
78 | return ((insn & 0xffc0) >> 8) & 0x7f; | |
79 | ||
80 | return ((insn & 0xff00) >> 8) & 0x7f; | |
81 | } | |
82 | ||
83 | if ((insn & 0xff000000) == 0) | |
84 | { | |
85 | ||
86 | if ((insn & 0xf00000) != 0xf00000 | |
87 | || (insn & 0xfc0000) == 0xf80000) | |
88 | return ((insn & 0xfc0000) >> 16) & 0x7f; | |
89 | ||
90 | if ((insn & 0xff0000) == 0xf50000) | |
91 | return ((insn & 0xfff000) >> 12) & 0x7f; | |
92 | return ((insn & 0xff0000) >> 16) & 0x7f; | |
93 | } | |
94 | ||
95 | return ((insn & 0xfff0000) >> 20) & 0x7f; | |
96 | } | |
97 | ||
98 | static INLINE void | |
99 | dispatch (insn, extension, length) | |
100 | uint32 insn; | |
101 | uint32 extension; | |
102 | int length; | |
103 | { | |
104 | struct hash_entry *h; | |
105 | ||
106 | h = &hash_table[hash(insn)]; | |
107 | ||
108 | while ((insn & h->mask) != h->opcode | |
109 | || (length != h->ops->length)) | |
110 | { | |
111 | if (!h->next) | |
112 | { | |
113 | (*mn10200_callback->printf_filtered) (mn10200_callback, | |
114 | "ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC); | |
115 | exit(1); | |
116 | } | |
117 | h = h->next; | |
118 | } | |
119 | ||
120 | ||
121 | #ifdef HASH_STAT | |
122 | h->count++; | |
123 | #endif | |
124 | ||
125 | /* Now call the right function. */ | |
126 | (h->ops->func)(insn, extension); | |
127 | PC += length; | |
128 | } | |
129 | ||
130 | /* FIXME These would more efficient to use than load_mem/store_mem, | |
131 | but need to be changed to use the memory map. */ | |
132 | ||
133 | uint32 | |
134 | get_word (x) | |
135 | uint8 *x; | |
136 | { | |
137 | uint8 *a = x; | |
138 | return (a[3]<<24) + (a[2]<<16) + (a[1]<<8) + (a[0]); | |
139 | } | |
140 | ||
141 | void | |
142 | put_word (addr, data) | |
143 | uint8 *addr; | |
144 | uint32 data; | |
145 | { | |
146 | uint8 *a = addr; | |
147 | a[0] = data & 0xff; | |
148 | a[1] = (data >> 8) & 0xff; | |
149 | a[2] = (data >> 16) & 0xff; | |
150 | a[3] = (data >> 24) & 0xff; | |
151 | } | |
152 | ||
153 | void | |
154 | sim_size (power) | |
155 | int power; | |
156 | ||
157 | { | |
158 | if (State.mem) | |
159 | free (State.mem); | |
160 | ||
161 | max_mem = 1 << power; | |
162 | State.mem = (uint8 *) calloc (1, 1 << power); | |
163 | if (!State.mem) | |
164 | { | |
165 | (*mn10200_callback->printf_filtered) (mn10200_callback, "Allocation of main memory failed.\n"); | |
166 | exit (1); | |
167 | } | |
168 | } | |
169 | ||
170 | static void | |
171 | init_system () | |
172 | { | |
173 | if (!State.mem) | |
174 | sim_size(19); | |
175 | } | |
176 | ||
177 | int | |
178 | sim_write (sd,addr, buffer, size) | |
179 | SIM_DESC sd; | |
180 | SIM_ADDR addr; | |
181 | unsigned char *buffer; | |
182 | int size; | |
183 | { | |
184 | int i; | |
185 | ||
186 | init_system (); | |
187 | ||
188 | for (i = 0; i < size; i++) | |
189 | store_byte (addr + i, buffer[i]); | |
190 | ||
191 | return size; | |
192 | } | |
193 | ||
194 | /* Compare two opcode table entries for qsort. */ | |
195 | static int | |
196 | compare_simops (arg1, arg2) | |
197 | const PTR arg1; | |
198 | const PTR arg2; | |
199 | { | |
200 | unsigned long code1 = ((struct simops *)arg1)->opcode; | |
201 | unsigned long code2 = ((struct simops *)arg2)->opcode; | |
202 | ||
203 | if (code1 < code2) | |
204 | return -1; | |
205 | if (code2 < code1) | |
206 | return 1; | |
207 | return 0; | |
208 | } | |
209 | ||
210 | SIM_DESC | |
211 | sim_open (kind, cb, abfd, argv) | |
212 | SIM_OPEN_KIND kind; | |
213 | host_callback *cb; | |
6b4a8935 | 214 | struct bfd *abfd; |
c906108c SS |
215 | char **argv; |
216 | { | |
217 | struct simops *s; | |
218 | struct hash_entry *h; | |
219 | char **p; | |
220 | int i; | |
221 | ||
222 | mn10200_callback = cb; | |
223 | ||
224 | /* Sort the opcode array from smallest opcode to largest. | |
225 | This will generally improve simulator performance as the smaller | |
226 | opcodes are generally preferred to the larger opcodes. */ | |
227 | for (i = 0, s = Simops; s->func; s++, i++) | |
228 | ; | |
229 | qsort (Simops, i, sizeof (Simops[0]), compare_simops); | |
230 | ||
231 | sim_kind = kind; | |
232 | myname = argv[0]; | |
233 | ||
234 | for (p = argv + 1; *p; ++p) | |
235 | { | |
236 | if (strcmp (*p, "-E") == 0) | |
237 | ++p; /* ignore endian spec */ | |
238 | else | |
239 | #ifdef DEBUG | |
240 | if (strcmp (*p, "-t") == 0) | |
241 | mn10200_debug = DEBUG; | |
242 | else | |
243 | #endif | |
244 | (*mn10200_callback->printf_filtered) (mn10200_callback, "ERROR: unsupported option(s): %s\n",*p); | |
245 | } | |
246 | ||
247 | /* put all the opcodes in the hash table */ | |
248 | for (s = Simops; s->func; s++) | |
249 | { | |
250 | h = &hash_table[hash(s->opcode)]; | |
251 | ||
252 | /* go to the last entry in the chain */ | |
253 | while (h->next) | |
254 | { | |
255 | /* Don't insert the same opcode more than once. */ | |
256 | if (h->opcode == s->opcode | |
257 | && h->mask == s->mask | |
258 | && h->ops == s) | |
259 | break; | |
260 | else | |
261 | h = h->next; | |
262 | } | |
263 | ||
264 | /* Don't insert the same opcode more than once. */ | |
265 | if (h->opcode == s->opcode | |
266 | && h->mask == s->mask | |
267 | && h->ops == s) | |
268 | continue; | |
269 | ||
270 | if (h->ops) | |
271 | { | |
272 | h->next = calloc(1,sizeof(struct hash_entry)); | |
273 | h = h->next; | |
274 | } | |
275 | h->ops = s; | |
276 | h->mask = s->mask; | |
277 | h->opcode = s->opcode; | |
278 | #ifdef HASH_STAT | |
279 | h->count = 0; | |
280 | #endif | |
281 | } | |
282 | ||
283 | /* fudge our descriptor for now */ | |
284 | return (SIM_DESC) 1; | |
285 | } | |
286 | ||
287 | ||
288 | void | |
289 | sim_set_profile (n) | |
290 | int n; | |
291 | { | |
292 | (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile %d\n", n); | |
293 | } | |
294 | ||
295 | void | |
296 | sim_set_profile_size (n) | |
297 | int n; | |
298 | { | |
299 | (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_set_profile_size %d\n", n); | |
300 | } | |
301 | ||
302 | int | |
303 | sim_stop (sd) | |
304 | SIM_DESC sd; | |
305 | { | |
7a292a7a SS |
306 | State.exception = SIGINT; |
307 | return 1; | |
c906108c SS |
308 | } |
309 | ||
310 | void | |
311 | sim_resume (sd, step, siggnal) | |
312 | SIM_DESC sd; | |
313 | int step, siggnal; | |
314 | { | |
315 | uint32 inst; | |
316 | ||
317 | if (step) | |
318 | State.exception = SIGTRAP; | |
319 | else | |
320 | State.exception = 0; | |
321 | ||
322 | State.exited = 0; | |
323 | ||
324 | do | |
325 | { | |
326 | unsigned long insn, extension; | |
327 | ||
7a292a7a | 328 | #ifdef NEED_UI_LOOP_HOOK |
0aaa4a81 | 329 | if (deprecated_ui_loop_hook != NULL && ui_loop_hook_counter-- < 0) |
7a292a7a SS |
330 | { |
331 | ui_loop_hook_counter = UI_LOOP_POLL_INTERVAL; | |
0aaa4a81 | 332 | deprecated_ui_loop_hook (0); |
7a292a7a SS |
333 | } |
334 | #endif /* NEED_UI_LOOP_HOOK */ | |
335 | ||
c906108c SS |
336 | /* Fetch the current instruction, fetch a double word to |
337 | avoid redundant fetching for the common cases below. */ | |
338 | inst = load_mem_big (PC, 2); | |
339 | ||
340 | /* Using a giant case statement may seem like a waste because of the | |
341 | code/rodata size the table itself will consume. However, using | |
342 | a giant case statement speeds up the simulator by 10-15% by avoiding | |
343 | cascading if/else statements or cascading case statements. */ | |
344 | switch ((inst >> 8) & 0xff) | |
345 | { | |
346 | /* All the single byte insns except 0x80, which must | |
347 | be handled specially. */ | |
348 | case 0x00: | |
349 | case 0x01: | |
350 | case 0x02: | |
351 | case 0x03: | |
352 | case 0x04: | |
353 | case 0x05: | |
354 | case 0x06: | |
355 | case 0x07: | |
356 | case 0x08: | |
357 | case 0x09: | |
358 | case 0x0a: | |
359 | case 0x0b: | |
360 | case 0x0c: | |
361 | case 0x0d: | |
362 | case 0x0e: | |
363 | case 0x0f: | |
364 | case 0x10: | |
365 | case 0x11: | |
366 | case 0x12: | |
367 | case 0x13: | |
368 | case 0x14: | |
369 | case 0x15: | |
370 | case 0x16: | |
371 | case 0x17: | |
372 | case 0x18: | |
373 | case 0x19: | |
374 | case 0x1a: | |
375 | case 0x1b: | |
376 | case 0x1c: | |
377 | case 0x1d: | |
378 | case 0x1e: | |
379 | case 0x1f: | |
380 | case 0x20: | |
381 | case 0x21: | |
382 | case 0x22: | |
383 | case 0x23: | |
384 | case 0x24: | |
385 | case 0x25: | |
386 | case 0x26: | |
387 | case 0x27: | |
388 | case 0x28: | |
389 | case 0x29: | |
390 | case 0x2a: | |
391 | case 0x2b: | |
392 | case 0x2c: | |
393 | case 0x2d: | |
394 | case 0x2e: | |
395 | case 0x2f: | |
396 | case 0x30: | |
397 | case 0x31: | |
398 | case 0x32: | |
399 | case 0x33: | |
400 | case 0x34: | |
401 | case 0x35: | |
402 | case 0x36: | |
403 | case 0x37: | |
404 | case 0x38: | |
405 | case 0x39: | |
406 | case 0x3a: | |
407 | case 0x3b: | |
408 | case 0x3c: | |
409 | case 0x3d: | |
410 | case 0x3e: | |
411 | case 0x3f: | |
412 | case 0x90: | |
413 | case 0x91: | |
414 | case 0x92: | |
415 | case 0x93: | |
416 | case 0x94: | |
417 | case 0x95: | |
418 | case 0x96: | |
419 | case 0x97: | |
420 | case 0x98: | |
421 | case 0x99: | |
422 | case 0x9a: | |
423 | case 0x9b: | |
424 | case 0x9c: | |
425 | case 0x9d: | |
426 | case 0x9e: | |
427 | case 0x9f: | |
428 | case 0xa0: | |
429 | case 0xa1: | |
430 | case 0xa2: | |
431 | case 0xa3: | |
432 | case 0xa4: | |
433 | case 0xa5: | |
434 | case 0xa6: | |
435 | case 0xa7: | |
436 | case 0xa8: | |
437 | case 0xa9: | |
438 | case 0xaa: | |
439 | case 0xab: | |
440 | case 0xac: | |
441 | case 0xad: | |
442 | case 0xae: | |
443 | case 0xaf: | |
444 | case 0xb0: | |
445 | case 0xb1: | |
446 | case 0xb2: | |
447 | case 0xb3: | |
448 | case 0xb4: | |
449 | case 0xb5: | |
450 | case 0xb6: | |
451 | case 0xb7: | |
452 | case 0xb8: | |
453 | case 0xb9: | |
454 | case 0xba: | |
455 | case 0xbb: | |
456 | case 0xbc: | |
457 | case 0xbd: | |
458 | case 0xbe: | |
459 | case 0xbf: | |
460 | case 0xeb: | |
461 | case 0xf6: | |
462 | case 0xfe: | |
463 | case 0xff: | |
464 | insn = (inst >> 8) & 0xff; | |
465 | extension = 0; | |
466 | dispatch (insn, extension, 1); | |
467 | break; | |
468 | ||
469 | /* Special case as mov dX,dX really means mov imm8,dX. */ | |
470 | case 0x80: | |
471 | case 0x85: | |
472 | case 0x8a: | |
473 | case 0x8f: | |
474 | /* Fetch the full instruction. */ | |
475 | insn = inst; | |
476 | extension = 0; | |
477 | dispatch (insn, extension, 2); | |
478 | break; | |
479 | ||
480 | case 0x81: | |
481 | case 0x82: | |
482 | case 0x83: | |
483 | case 0x84: | |
484 | case 0x86: | |
485 | case 0x87: | |
486 | case 0x88: | |
487 | case 0x89: | |
488 | case 0x8b: | |
489 | case 0x8c: | |
490 | case 0x8d: | |
491 | case 0x8e: | |
492 | insn = (inst >> 8) & 0xff; | |
493 | extension = 0; | |
494 | dispatch (insn, extension, 1); | |
495 | break; | |
496 | ||
497 | /* And the two byte insns. */ | |
498 | case 0x40: | |
499 | case 0x41: | |
500 | case 0x42: | |
501 | case 0x43: | |
502 | case 0x44: | |
503 | case 0x45: | |
504 | case 0x46: | |
505 | case 0x47: | |
506 | case 0x48: | |
507 | case 0x49: | |
508 | case 0x4a: | |
509 | case 0x4b: | |
510 | case 0x4c: | |
511 | case 0x4d: | |
512 | case 0x4e: | |
513 | case 0x4f: | |
514 | case 0x50: | |
515 | case 0x51: | |
516 | case 0x52: | |
517 | case 0x53: | |
518 | case 0x54: | |
519 | case 0x55: | |
520 | case 0x56: | |
521 | case 0x57: | |
522 | case 0x58: | |
523 | case 0x59: | |
524 | case 0x5a: | |
525 | case 0x5b: | |
526 | case 0x5c: | |
527 | case 0x5d: | |
528 | case 0x5e: | |
529 | case 0x5f: | |
530 | case 0x60: | |
531 | case 0x61: | |
532 | case 0x62: | |
533 | case 0x63: | |
534 | case 0x64: | |
535 | case 0x65: | |
536 | case 0x66: | |
537 | case 0x67: | |
538 | case 0x68: | |
539 | case 0x69: | |
540 | case 0x6a: | |
541 | case 0x6b: | |
542 | case 0x6c: | |
543 | case 0x6d: | |
544 | case 0x6e: | |
545 | case 0x6f: | |
546 | case 0x70: | |
547 | case 0x71: | |
548 | case 0x72: | |
549 | case 0x73: | |
550 | case 0x74: | |
551 | case 0x75: | |
552 | case 0x76: | |
553 | case 0x77: | |
554 | case 0x78: | |
555 | case 0x79: | |
556 | case 0x7a: | |
557 | case 0x7b: | |
558 | case 0x7c: | |
559 | case 0x7d: | |
560 | case 0x7e: | |
561 | case 0x7f: | |
562 | case 0xd0: | |
563 | case 0xd1: | |
564 | case 0xd2: | |
565 | case 0xd3: | |
566 | case 0xd4: | |
567 | case 0xd5: | |
568 | case 0xd6: | |
569 | case 0xd7: | |
570 | case 0xd8: | |
571 | case 0xd9: | |
572 | case 0xda: | |
573 | case 0xdb: | |
574 | case 0xe0: | |
575 | case 0xe1: | |
576 | case 0xe2: | |
577 | case 0xe3: | |
578 | case 0xe4: | |
579 | case 0xe5: | |
580 | case 0xe6: | |
581 | case 0xe7: | |
582 | case 0xe8: | |
583 | case 0xe9: | |
584 | case 0xea: | |
585 | case 0xf0: | |
586 | case 0xf1: | |
587 | case 0xf2: | |
588 | case 0xf3: | |
589 | /* Fetch the full instruction. */ | |
590 | insn = inst; | |
591 | extension = 0; | |
592 | dispatch (insn, extension, 2); | |
593 | break; | |
594 | ||
595 | /* And the 3 byte insns with a 16bit operand in little | |
596 | endian format. */ | |
597 | case 0xc0: | |
598 | case 0xc1: | |
599 | case 0xc2: | |
600 | case 0xc3: | |
601 | case 0xc4: | |
602 | case 0xc5: | |
603 | case 0xc6: | |
604 | case 0xc7: | |
605 | case 0xc8: | |
606 | case 0xc9: | |
607 | case 0xca: | |
608 | case 0xcb: | |
609 | case 0xcc: | |
610 | case 0xcd: | |
611 | case 0xce: | |
612 | case 0xcf: | |
613 | case 0xdc: | |
614 | case 0xdd: | |
615 | case 0xde: | |
616 | case 0xdf: | |
617 | case 0xec: | |
618 | case 0xed: | |
619 | case 0xee: | |
620 | case 0xef: | |
621 | case 0xf8: | |
622 | case 0xf9: | |
623 | case 0xfa: | |
624 | case 0xfb: | |
625 | case 0xfc: | |
626 | case 0xfd: | |
627 | insn = load_byte (PC); | |
628 | insn <<= 16; | |
629 | insn |= load_half (PC + 1); | |
630 | extension = 0; | |
631 | dispatch (insn, extension, 3); | |
632 | break; | |
633 | ||
634 | /* 3 byte insns without 16bit operand. */ | |
635 | case 0xf5: | |
636 | insn = load_mem_big (PC, 3); | |
637 | extension = 0; | |
638 | dispatch (insn, extension, 3); | |
639 | break; | |
640 | ||
641 | /* 4 byte insns. */ | |
642 | case 0xf7: | |
643 | insn = inst; | |
644 | insn <<= 16; | |
645 | insn |= load_half (PC + 2); | |
646 | extension = 0; | |
647 | dispatch (insn, extension, 4); | |
648 | break; | |
649 | ||
650 | case 0xf4: | |
651 | insn = inst; | |
652 | insn <<= 16; | |
653 | insn |= load_mem_big (PC + 4, 1) << 8; | |
654 | insn |= load_mem_big (PC + 3, 1); | |
655 | extension = load_mem_big (PC + 2, 1); | |
656 | dispatch (insn, extension, 5); | |
657 | break; | |
658 | ||
659 | default: | |
660 | abort (); | |
661 | } | |
662 | } | |
663 | while (!State.exception); | |
664 | ||
665 | #ifdef HASH_STAT | |
666 | { | |
667 | int i; | |
668 | for (i = 0; i < MAX_HASH; i++) | |
669 | { | |
670 | struct hash_entry *h; | |
671 | h = &hash_table[i]; | |
672 | ||
673 | printf("hash 0x%x:\n", i); | |
674 | ||
675 | while (h) | |
676 | { | |
677 | printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count); | |
678 | h = h->next; | |
679 | } | |
680 | ||
681 | printf("\n\n"); | |
682 | } | |
683 | fflush (stdout); | |
684 | } | |
685 | #endif | |
686 | ||
687 | } | |
688 | ||
689 | ||
690 | void | |
691 | sim_close (sd, quitting) | |
692 | SIM_DESC sd; | |
693 | int quitting; | |
694 | { | |
695 | /* nothing to do */ | |
696 | } | |
697 | ||
698 | int | |
699 | sim_trace (sd) | |
700 | SIM_DESC sd; | |
701 | { | |
702 | #ifdef DEBUG | |
703 | mn10200_debug = DEBUG; | |
704 | #endif | |
705 | sim_resume (sd, 0, 0); | |
706 | return 1; | |
707 | } | |
708 | ||
709 | void | |
710 | sim_info (sd, verbose) | |
711 | SIM_DESC sd; | |
712 | int verbose; | |
713 | { | |
714 | (*mn10200_callback->printf_filtered) (mn10200_callback, "sim_info\n"); | |
715 | } | |
716 | ||
717 | SIM_RC | |
718 | sim_create_inferior (sd, abfd, argv, env) | |
719 | SIM_DESC sd; | |
6b4a8935 | 720 | struct bfd *abfd; |
c906108c SS |
721 | char **argv; |
722 | char **env; | |
723 | { | |
724 | if (abfd != NULL) | |
725 | PC = bfd_get_start_address (abfd); | |
726 | else | |
727 | PC = 0; | |
728 | return SIM_RC_OK; | |
729 | } | |
730 | ||
731 | void | |
732 | sim_set_callbacks (p) | |
733 | host_callback *p; | |
734 | { | |
735 | mn10200_callback = p; | |
736 | } | |
737 | ||
738 | /* All the code for exiting, signals, etc needs to be revamped. | |
739 | ||
740 | This is enough to get c-torture limping though. */ | |
741 | ||
742 | void | |
743 | sim_stop_reason (sd, reason, sigrc) | |
744 | SIM_DESC sd; | |
745 | enum sim_stop *reason; | |
746 | int *sigrc; | |
747 | { | |
748 | if (State.exited) | |
749 | *reason = sim_exited; | |
750 | else | |
751 | *reason = sim_stopped; | |
752 | if (State.exception == SIGQUIT) | |
753 | *sigrc = 0; | |
754 | else | |
755 | *sigrc = State.exception; | |
756 | } | |
757 | ||
758 | int | |
759 | sim_fetch_register (sd, rn, memory, length) | |
760 | SIM_DESC sd; | |
761 | int rn; | |
762 | unsigned char *memory; | |
763 | int length; | |
764 | { | |
765 | put_word (memory, State.regs[rn]); | |
766 | return -1; | |
767 | } | |
768 | ||
769 | int | |
770 | sim_store_register (sd, rn, memory, length) | |
771 | SIM_DESC sd; | |
772 | int rn; | |
773 | unsigned char *memory; | |
774 | int length; | |
775 | { | |
776 | State.regs[rn] = get_word (memory); | |
777 | return -1; | |
778 | } | |
779 | ||
780 | int | |
781 | sim_read (sd, addr, buffer, size) | |
782 | SIM_DESC sd; | |
783 | SIM_ADDR addr; | |
784 | unsigned char *buffer; | |
785 | int size; | |
786 | { | |
787 | int i; | |
788 | for (i = 0; i < size; i++) | |
789 | buffer[i] = load_byte (addr + i); | |
790 | ||
791 | return size; | |
792 | } | |
793 | ||
794 | void | |
795 | sim_do_command (sd, cmd) | |
796 | SIM_DESC sd; | |
797 | char *cmd; | |
798 | { | |
799 | (*mn10200_callback->printf_filtered) (mn10200_callback, "\"%s\" is not a valid mn10200 simulator command.\n", cmd); | |
800 | } | |
801 | ||
802 | SIM_RC | |
803 | sim_load (sd, prog, abfd, from_tty) | |
804 | SIM_DESC sd; | |
805 | char *prog; | |
806 | bfd *abfd; | |
807 | int from_tty; | |
808 | { | |
809 | extern bfd *sim_load_file (); /* ??? Don't know where this should live. */ | |
810 | bfd *prog_bfd; | |
811 | ||
812 | prog_bfd = sim_load_file (sd, myname, mn10200_callback, prog, abfd, | |
813 | sim_kind == SIM_OPEN_DEBUG, | |
814 | 0, sim_write); | |
815 | if (prog_bfd == NULL) | |
816 | return SIM_RC_FAIL; | |
817 | if (abfd == NULL) | |
818 | bfd_close (prog_bfd); | |
819 | return SIM_RC_OK; | |
820 | } |