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sim/erc32: Perform pseudo-init if binary linked to non-zero address.
[deliverable/binutils-gdb.git] / sim / erc32 / func.c
1 /*
2 * func.c, misc simulator functions. This file is part of SIS.
3 *
4 * SIS, SPARC instruction simulator V1.8 Copyright (C) 1995 Jiri Gaisler,
5 * European Space Agency
6 *
7 * This program is free software; you can redistribute it and/or modify it under
8 * the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 3 of the License, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, see <http://www.gnu.org/licenses/>.
19 *
20 */
21
22 #include "config.h"
23 #include <signal.h>
24 #include <string.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <ctype.h>
28 #include "sis.h"
29 #include "end.h"
30 #include <dis-asm.h>
31 #include "sim-config.h"
32
33
34 #define VAL(x) strtoul(x,(char **)NULL,0)
35
36 extern int current_target_byte_order;
37 struct disassemble_info dinfo;
38 struct pstate sregs;
39 extern struct estate ebase;
40 int ctrl_c = 0;
41 int sis_verbose = 0;
42 char *sis_version = "2.7.5";
43 int nfp = 0;
44 int ift = 0;
45 int wrp = 0;
46 int rom8 = 0;
47 int uben = 0;
48 int termsave;
49 int sparclite = 0; /* emulating SPARClite instructions? */
50 int sparclite_board = 0; /* emulating SPARClite board RAM? */
51 char uart_dev1[128] = "";
52 char uart_dev2[128] = "";
53 extern int ext_irl;
54 uint32 last_load_addr = 0;
55
56 #ifdef ERRINJ
57 uint32 errcnt = 0;
58 uint32 errper = 0;
59 uint32 errtt = 0;
60 uint32 errftt = 0;
61 uint32 errmec = 0;
62 #endif
63
64 /* Forward declarations */
65
66 static int batch (struct pstate *sregs, char *fname);
67 static void set_rega (struct pstate *sregs, char *reg, uint32 rval);
68 static void disp_reg (struct pstate *sregs, char *reg);
69 static uint32 limcalc (float32 freq);
70 static void int_handler (int32 sig);
71 static void init_event (void);
72 static int disp_fpu (struct pstate *sregs);
73 static void disp_regs (struct pstate *sregs, int cwp);
74 static void disp_ctrl (struct pstate *sregs);
75 static void disp_mem (uint32 addr, uint32 len);
76
77 static int
78 batch(sregs, fname)
79 struct pstate *sregs;
80 char *fname;
81 {
82 FILE *fp;
83 char lbuf[1024];
84
85 if ((fp = fopen(fname, "r")) == NULL) {
86 fprintf(stderr, "couldn't open batch file %s\n", fname);
87 return (0);
88 }
89 while (!feof(fp)) {
90 lbuf[0] = 0;
91 fgets(lbuf, 1023, fp);
92 if ((strlen(lbuf) > 0) && (lbuf[strlen(lbuf) - 1] == '\n'))
93 lbuf[strlen(lbuf) - 1] = 0;
94 printf("sis> %s\n", lbuf);
95 exec_cmd(sregs, lbuf);
96 }
97 fclose(fp);
98 return (1);
99 }
100
101 void
102 set_regi(sregs, reg, rval)
103 struct pstate *sregs;
104 int32 reg;
105 uint32 rval;
106 {
107 uint32 cwp;
108
109 cwp = ((sregs->psr & 0x7) << 4);
110 if ((reg > 0) && (reg < 8)) {
111 sregs->g[reg] = rval;
112 } else if ((reg >= 8) && (reg < 32)) {
113 sregs->r[(cwp + reg) & 0x7f] = rval;
114 } else if ((reg >= 32) && (reg < 64)) {
115 sregs->fsi[reg - 32] = rval;
116 } else {
117 switch (reg) {
118 case 64:
119 sregs->y = rval;
120 break;
121 case 65:
122 sregs->psr = rval;
123 break;
124 case 66:
125 sregs->wim = rval;
126 break;
127 case 67:
128 sregs->tbr = rval;
129 break;
130 case 68:
131 sregs->pc = rval;
132 break;
133 case 69:
134 sregs->npc = rval;
135 break;
136 case 70:
137 sregs->fsr = rval;
138 set_fsr(rval);
139 break;
140 default:break;
141 }
142 }
143 }
144
145 void
146 get_regi(struct pstate * sregs, int32 reg, char *buf)
147 {
148 uint32 cwp;
149 uint32 rval = 0;
150
151 cwp = ((sregs->psr & 0x7) << 4);
152 if ((reg >= 0) && (reg < 8)) {
153 rval = sregs->g[reg];
154 } else if ((reg >= 8) && (reg < 32)) {
155 rval = sregs->r[(cwp + reg) & 0x7f];
156 } else if ((reg >= 32) && (reg < 64)) {
157 rval = sregs->fsi[reg - 32];
158 } else {
159 switch (reg) {
160 case 64:
161 rval = sregs->y;
162 break;
163 case 65:
164 rval = sregs->psr;
165 break;
166 case 66:
167 rval = sregs->wim;
168 break;
169 case 67:
170 rval = sregs->tbr;
171 break;
172 case 68:
173 rval = sregs->pc;
174 break;
175 case 69:
176 rval = sregs->npc;
177 break;
178 case 70:
179 rval = sregs->fsr;
180 break;
181 default:break;
182 }
183 }
184 if (current_target_byte_order == BIG_ENDIAN) {
185 buf[0] = (rval >> 24) & 0x0ff;
186 buf[1] = (rval >> 16) & 0x0ff;
187 buf[2] = (rval >> 8) & 0x0ff;
188 buf[3] = rval & 0x0ff;
189 }
190 else {
191 buf[3] = (rval >> 24) & 0x0ff;
192 buf[2] = (rval >> 16) & 0x0ff;
193 buf[1] = (rval >> 8) & 0x0ff;
194 buf[0] = rval & 0x0ff;
195 }
196 }
197
198
199 static void
200 set_rega(sregs, reg, rval)
201 struct pstate *sregs;
202 char *reg;
203 uint32 rval;
204 {
205 uint32 cwp;
206 int32 err = 0;
207
208 cwp = ((sregs->psr & 0x7) << 4);
209 if (strcmp(reg, "psr") == 0)
210 sregs->psr = (rval = (rval & 0x00f03fff));
211 else if (strcmp(reg, "tbr") == 0)
212 sregs->tbr = (rval = (rval & 0xfffffff0));
213 else if (strcmp(reg, "wim") == 0)
214 sregs->wim = (rval = (rval & 0x0ff));
215 else if (strcmp(reg, "y") == 0)
216 sregs->y = rval;
217 else if (strcmp(reg, "pc") == 0)
218 sregs->pc = rval;
219 else if (strcmp(reg, "npc") == 0)
220 sregs->npc = rval;
221 else if (strcmp(reg, "fsr") == 0) {
222 sregs->fsr = rval;
223 set_fsr(rval);
224 } else if (strcmp(reg, "g0") == 0)
225 err = 2;
226 else if (strcmp(reg, "g1") == 0)
227 sregs->g[1] = rval;
228 else if (strcmp(reg, "g2") == 0)
229 sregs->g[2] = rval;
230 else if (strcmp(reg, "g3") == 0)
231 sregs->g[3] = rval;
232 else if (strcmp(reg, "g4") == 0)
233 sregs->g[4] = rval;
234 else if (strcmp(reg, "g5") == 0)
235 sregs->g[5] = rval;
236 else if (strcmp(reg, "g6") == 0)
237 sregs->g[6] = rval;
238 else if (strcmp(reg, "g7") == 0)
239 sregs->g[7] = rval;
240 else if (strcmp(reg, "o0") == 0)
241 sregs->r[(cwp + 8) & 0x7f] = rval;
242 else if (strcmp(reg, "o1") == 0)
243 sregs->r[(cwp + 9) & 0x7f] = rval;
244 else if (strcmp(reg, "o2") == 0)
245 sregs->r[(cwp + 10) & 0x7f] = rval;
246 else if (strcmp(reg, "o3") == 0)
247 sregs->r[(cwp + 11) & 0x7f] = rval;
248 else if (strcmp(reg, "o4") == 0)
249 sregs->r[(cwp + 12) & 0x7f] = rval;
250 else if (strcmp(reg, "o5") == 0)
251 sregs->r[(cwp + 13) & 0x7f] = rval;
252 else if (strcmp(reg, "o6") == 0)
253 sregs->r[(cwp + 14) & 0x7f] = rval;
254 else if (strcmp(reg, "o7") == 0)
255 sregs->r[(cwp + 15) & 0x7f] = rval;
256 else if (strcmp(reg, "l0") == 0)
257 sregs->r[(cwp + 16) & 0x7f] = rval;
258 else if (strcmp(reg, "l1") == 0)
259 sregs->r[(cwp + 17) & 0x7f] = rval;
260 else if (strcmp(reg, "l2") == 0)
261 sregs->r[(cwp + 18) & 0x7f] = rval;
262 else if (strcmp(reg, "l3") == 0)
263 sregs->r[(cwp + 19) & 0x7f] = rval;
264 else if (strcmp(reg, "l4") == 0)
265 sregs->r[(cwp + 20) & 0x7f] = rval;
266 else if (strcmp(reg, "l5") == 0)
267 sregs->r[(cwp + 21) & 0x7f] = rval;
268 else if (strcmp(reg, "l6") == 0)
269 sregs->r[(cwp + 22) & 0x7f] = rval;
270 else if (strcmp(reg, "l7") == 0)
271 sregs->r[(cwp + 23) & 0x7f] = rval;
272 else if (strcmp(reg, "i0") == 0)
273 sregs->r[(cwp + 24) & 0x7f] = rval;
274 else if (strcmp(reg, "i1") == 0)
275 sregs->r[(cwp + 25) & 0x7f] = rval;
276 else if (strcmp(reg, "i2") == 0)
277 sregs->r[(cwp + 26) & 0x7f] = rval;
278 else if (strcmp(reg, "i3") == 0)
279 sregs->r[(cwp + 27) & 0x7f] = rval;
280 else if (strcmp(reg, "i4") == 0)
281 sregs->r[(cwp + 28) & 0x7f] = rval;
282 else if (strcmp(reg, "i5") == 0)
283 sregs->r[(cwp + 29) & 0x7f] = rval;
284 else if (strcmp(reg, "i6") == 0)
285 sregs->r[(cwp + 30) & 0x7f] = rval;
286 else if (strcmp(reg, "i7") == 0)
287 sregs->r[(cwp + 31) & 0x7f] = rval;
288 else
289 err = 1;
290 switch (err) {
291 case 0:
292 printf("%s = %d (0x%08x)\n", reg, rval, rval);
293 break;
294 case 1:
295 printf("no such regiser: %s\n", reg);
296 break;
297 case 2:
298 printf("cannot set g0\n");
299 break;
300 default:
301 break;
302 }
303
304 }
305
306 static void
307 disp_reg(sregs, reg)
308 struct pstate *sregs;
309 char *reg;
310 {
311 if (strncmp(reg, "w",1) == 0)
312 disp_regs(sregs, VAL(&reg[1]));
313 }
314
315 #ifdef ERRINJ
316
317 void
318 errinj()
319 {
320 int err;
321
322 switch (err = (random() % 12)) {
323 case 0: errtt = 0x61; break;
324 case 1: errtt = 0x62; break;
325 case 2: errtt = 0x63; break;
326 case 3: errtt = 0x64; break;
327 case 4: errtt = 0x65; break;
328 case 5:
329 case 6:
330 case 7: errftt = err;
331 break;
332 case 8: errmec = 1; break;
333 case 9: errmec = 2; break;
334 case 10: errmec = 5; break;
335 case 11: errmec = 6; break;
336 }
337 errcnt++;
338 if (errper) event(errinj, 0, (random()%errper));
339 }
340
341 void
342 errinjstart()
343 {
344 if (errper) event(errinj, 0, (random()%errper));
345 }
346
347 #endif
348
349 static uint32
350 limcalc (freq)
351 float32 freq;
352 {
353 uint32 unit, lim;
354 double flim;
355 char *cmd1, *cmd2;
356
357 unit = 1;
358 lim = -1;
359 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
360 lim = VAL(cmd1);
361 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
362 if (strcmp(cmd2,"us")==0) unit = 1;
363 if (strcmp(cmd2,"ms")==0) unit = 1000;
364 if (strcmp(cmd2,"s")==0) unit = 1000000;
365 }
366 flim = (double) lim * (double) unit * (double) freq +
367 (double) ebase.simtime;
368 if ((flim > ebase.simtime) && (flim < 4294967296.0)) {
369 lim = (uint32) flim;
370 } else {
371 printf("error in expression\n");
372 lim = -1;
373 }
374 }
375 return (lim);
376 }
377
378 int
379 exec_cmd(sregs, cmd)
380 char *cmd;
381 struct pstate *sregs;
382 {
383 char *cmd1, *cmd2;
384 int32 stat;
385 uint32 len, i, clen, j;
386 static uint32 daddr = 0;
387 char *cmdsave;
388
389 stat = OK;
390 cmdsave = strdup(cmd);
391 if ((cmd1 = strtok(cmd, " \t")) != NULL) {
392 clen = strlen(cmd1);
393 if (strncmp(cmd1, "bp", clen) == 0) {
394 for (i = 0; i < sregs->bptnum; i++) {
395 printf(" %d : 0x%08x\n", i + 1, sregs->bpts[i]);
396 }
397 } else if (strncmp(cmd1, "+bp", clen) == 0) {
398 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
399 sregs->bpts[sregs->bptnum] = VAL(cmd1) & ~0x3;
400 printf("added breakpoint %d at 0x%08x\n",
401 sregs->bptnum + 1, sregs->bpts[sregs->bptnum]);
402 sregs->bptnum += 1;
403 }
404 } else if (strncmp(cmd1, "-bp", clen) == 0) {
405 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
406 i = VAL(cmd1) - 1;
407 if ((i >= 0) && (i < sregs->bptnum)) {
408 printf("deleted breakpoint %d at 0x%08x\n", i + 1,
409 sregs->bpts[i]);
410 for (; i < sregs->bptnum - 1; i++) {
411 sregs->bpts[i] = sregs->bpts[i + 1];
412 }
413 sregs->bptnum -= 1;
414 }
415 }
416 } else if (strncmp(cmd1, "batch", clen) == 0) {
417 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
418 printf("no file specified\n");
419 } else {
420 batch(sregs, cmd1);
421 }
422 } else if (strncmp(cmd1, "cont", clen) == 0) {
423 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
424 stat = run_sim(sregs, UINT64_MAX, 0);
425 } else {
426 stat = run_sim(sregs, VAL(cmd1), 0);
427 }
428 daddr = sregs->pc;
429 sim_halt();
430 } else if (strncmp(cmd1, "debug", clen) == 0) {
431 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
432 sis_verbose = VAL(cmd1);
433 }
434 printf("Debug level = %d\n",sis_verbose);
435 } else if (strncmp(cmd1, "dis", clen) == 0) {
436 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
437 daddr = VAL(cmd1);
438 }
439 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
440 len = VAL(cmd2);
441 } else
442 len = 16;
443 printf("\n");
444 dis_mem(daddr, len, &dinfo);
445 printf("\n");
446 daddr += len * 4;
447 } else if (strncmp(cmd1, "echo", clen) == 0) {
448 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
449 printf("%s\n", (&cmdsave[clen+1]));
450 }
451 #ifdef ERRINJ
452 } else if (strncmp(cmd1, "error", clen) == 0) {
453 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
454 errper = VAL(cmd1);
455 if (errper) {
456 event(errinj, 0, (len = (random()%errper)));
457 printf("Error injection started with period %d\n",len);
458 }
459 } else printf("Injected errors: %d\n",errcnt);
460 #endif
461 } else if (strncmp(cmd1, "float", clen) == 0) {
462 stat = disp_fpu(sregs);
463 } else if (strncmp(cmd1, "go", clen) == 0) {
464 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
465 len = last_load_addr;
466 } else {
467 len = VAL(cmd1);
468 }
469 sregs->pc = len & ~3;
470 sregs->npc = sregs->pc + 4;
471 if ((sregs->pc != 0) && (ebase.simtime == 0))
472 boot_init();
473 printf("resuming at 0x%08x\n",sregs->pc);
474 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
475 stat = run_sim(sregs, VAL(cmd2), 0);
476 } else {
477 stat = run_sim(sregs, UINT64_MAX, 0);
478 }
479 daddr = sregs->pc;
480 sim_halt();
481 } else if (strncmp(cmd1, "help", clen) == 0) {
482 gen_help();
483 } else if (strncmp(cmd1, "history", clen) == 0) {
484 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
485 sregs->histlen = VAL(cmd1);
486 if (sregs->histbuf != NULL)
487 free(sregs->histbuf);
488 sregs->histbuf = (struct histype *) calloc(sregs->histlen, sizeof(struct histype));
489 printf("trace history length = %d\n\r", sregs->histlen);
490 sregs->histind = 0;
491
492 } else {
493 j = sregs->histind;
494 for (i = 0; i < sregs->histlen; i++) {
495 if (j >= sregs->histlen)
496 j = 0;
497 printf(" %8d ", sregs->histbuf[j].time);
498 dis_mem(sregs->histbuf[j].addr, 1, &dinfo);
499 j++;
500 }
501 }
502
503 } else if (strncmp(cmd1, "load", clen) == 0) {
504 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
505 last_load_addr = bfd_load(cmd1);
506 while ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
507 last_load_addr = bfd_load(cmd1);
508 } else {
509 printf("load: no file specified\n");
510 }
511 } else if (strncmp(cmd1, "mem", clen) == 0) {
512 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
513 daddr = VAL(cmd1);
514 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL)
515 len = VAL(cmd2);
516 else
517 len = 64;
518 disp_mem(daddr, len);
519 daddr += len;
520 } else if (strncmp(cmd1, "perf", clen) == 0) {
521 cmd1 = strtok(NULL, " \t\n\r");
522 if ((cmd1 != NULL) &&
523 (strncmp(cmd1, "reset", strlen(cmd1)) == 0)) {
524 reset_stat(sregs);
525 } else
526 show_stat(sregs);
527 } else if (strncmp(cmd1, "quit", clen) == 0) {
528 exit(0);
529 } else if (strncmp(cmd1, "reg", clen) == 0) {
530 cmd1 = strtok(NULL, " \t\n\r");
531 cmd2 = strtok(NULL, " \t\n\r");
532 if (cmd2 != NULL)
533 set_rega(sregs, cmd1, VAL(cmd2));
534 else if (cmd1 != NULL)
535 disp_reg(sregs, cmd1);
536 else {
537 disp_regs(sregs,sregs->psr);
538 disp_ctrl(sregs);
539 }
540 } else if (strncmp(cmd1, "reset", clen) == 0) {
541 ebase.simtime = 0;
542 reset_all();
543 reset_stat(sregs);
544 } else if (strncmp(cmd1, "run", clen) == 0) {
545 ebase.simtime = 0;
546 reset_all();
547 reset_stat(sregs);
548 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
549 stat = run_sim(sregs, UINT64_MAX, 0);
550 } else {
551 stat = run_sim(sregs, VAL(cmd1), 0);
552 }
553 daddr = sregs->pc;
554 sim_halt();
555 } else if (strncmp(cmd1, "shell", clen) == 0) {
556 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
557 system(&cmdsave[clen]);
558 }
559 } else if (strncmp(cmd1, "step", clen) == 0) {
560 stat = run_sim(sregs, 1, 1);
561 daddr = sregs->pc;
562 sim_halt();
563 } else if (strncmp(cmd1, "tcont", clen) == 0) {
564 sregs->tlimit = limcalc(sregs->freq);
565 stat = run_sim(sregs, UINT64_MAX, 0);
566 daddr = sregs->pc;
567 sim_halt();
568 } else if (strncmp(cmd1, "tgo", clen) == 0) {
569 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
570 len = last_load_addr;
571 } else {
572 len = VAL(cmd1);
573 sregs->tlimit = limcalc(sregs->freq);
574 }
575 sregs->pc = len & ~3;
576 sregs->npc = sregs->pc + 4;
577 printf("resuming at 0x%08x\n",sregs->pc);
578 stat = run_sim(sregs, UINT64_MAX, 0);
579 daddr = sregs->pc;
580 sim_halt();
581 } else if (strncmp(cmd1, "tlimit", clen) == 0) {
582 sregs->tlimit = limcalc(sregs->freq);
583 if (sregs->tlimit != (uint32) -1)
584 printf("simulation limit = %u (%.3f ms)\n",(uint32) sregs->tlimit,
585 sregs->tlimit / sregs->freq / 1000);
586 } else if (strncmp(cmd1, "tra", clen) == 0) {
587 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
588 stat = run_sim(sregs, UINT64_MAX, 1);
589 } else {
590 stat = run_sim(sregs, VAL(cmd1), 1);
591 }
592 printf("\n");
593 daddr = sregs->pc;
594 sim_halt();
595 } else if (strncmp(cmd1, "trun", clen) == 0) {
596 ebase.simtime = 0;
597 reset_all();
598 reset_stat(sregs);
599 sregs->tlimit = limcalc(sregs->freq);
600 stat = run_sim(sregs, UINT64_MAX, 0);
601 daddr = sregs->pc;
602 sim_halt();
603 } else
604 printf("syntax error\n");
605 }
606 if (cmdsave != NULL)
607 free(cmdsave);
608 return (stat);
609 }
610
611
612 void
613 reset_stat(sregs)
614 struct pstate *sregs;
615 {
616 sregs->tottime = 0;
617 sregs->pwdtime = 0;
618 sregs->ninst = 0;
619 sregs->fholdt = 0;
620 sregs->holdt = 0;
621 sregs->icntt = 0;
622 sregs->finst = 0;
623 sregs->nstore = 0;
624 sregs->nload = 0;
625 sregs->nbranch = 0;
626 sregs->simstart = ebase.simtime;
627
628 }
629
630 void
631 show_stat(sregs)
632 struct pstate *sregs;
633 {
634 uint32 iinst;
635 uint32 stime, tottime;
636
637 if (sregs->tottime == 0) tottime = 1; else tottime = sregs->tottime;
638 stime = ebase.simtime - sregs->simstart; /* Total simulated time */
639 #ifdef STAT
640
641 iinst = sregs->ninst - sregs->finst - sregs->nload - sregs->nstore -
642 sregs->nbranch;
643 #endif
644
645 printf("\n Cycles : %9d\n\r", ebase.simtime - sregs->simstart);
646 printf(" Instructions : %9d\n", sregs->ninst);
647
648 #ifdef STAT
649 printf(" integer : %9.2f %%\n", 100.0 * (float) iinst / (float) sregs->ninst);
650 printf(" load : %9.2f %%\n",
651 100.0 * (float) sregs->nload / (float) sregs->ninst);
652 printf(" store : %9.2f %%\n",
653 100.0 * (float) sregs->nstore / (float) sregs->ninst);
654 printf(" branch : %9.2f %%\n",
655 100.0 * (float) sregs->nbranch / (float) sregs->ninst);
656 printf(" float : %9.2f %%\n",
657 100.0 * (float) sregs->finst / (float) sregs->ninst);
658 printf(" Integer CPI : %9.2f\n",
659 ((float) (stime - sregs->pwdtime - sregs->fholdt - sregs->finst))
660 /
661 (float) (sregs->ninst - sregs->finst));
662 printf(" Float CPI : %9.2f\n",
663 ((float) sregs->fholdt / (float) sregs->finst) + 1.0);
664 #endif
665 printf(" Overall CPI : %9.2f\n",
666 (float) (stime - sregs->pwdtime) / (float) sregs->ninst);
667 printf("\n ERC32 performance (%4.1f MHz): %5.2f MOPS (%5.2f MIPS, %5.2f MFLOPS)\n",
668 sregs->freq, sregs->freq * (float) sregs->ninst / (float) (stime - sregs->pwdtime),
669 sregs->freq * (float) (sregs->ninst - sregs->finst) /
670 (float) (stime - sregs->pwdtime),
671 sregs->freq * (float) sregs->finst / (float) (stime - sregs->pwdtime));
672 printf(" Simulated ERC32 time : %5.2f ms\n", (float) (ebase.simtime - sregs->simstart) / 1000.0 / sregs->freq);
673 printf(" Processor utilisation : %5.2f %%\n", 100.0 * (1.0 - ((float) sregs->pwdtime / (float) stime)));
674 printf(" Real-time / simulator-time : 1/%.2f \n",
675 ((float) sregs->tottime) / ((float) (stime) / (sregs->freq * 1.0E6)));
676 printf(" Simulator performance : %d KIPS\n",sregs->ninst/tottime/1000);
677 printf(" Used time (sys + user) : %3d s\n\n", sregs->tottime);
678 }
679
680
681
682 void
683 init_bpt(sregs)
684 struct pstate *sregs;
685 {
686 sregs->bptnum = 0;
687 sregs->histlen = 0;
688 sregs->histind = 0;
689 sregs->histbuf = NULL;
690 sregs->tlimit = -1;
691 }
692
693 static void
694 int_handler(sig)
695 int32 sig;
696 {
697 if (sig != 2)
698 printf("\n\n Signal handler error (%d)\n\n", sig);
699 ctrl_c = 1;
700 }
701
702 void
703 init_signals()
704 {
705 typedef void (*PFI) ();
706 static PFI int_tab[2];
707
708 int_tab[0] = signal(SIGTERM, int_handler);
709 int_tab[1] = signal(SIGINT, int_handler);
710 }
711
712
713 extern struct disassemble_info dinfo;
714
715 struct estate ebase;
716 struct evcell evbuf[EVENT_MAX];
717 struct irqcell irqarr[16];
718
719 static int
720 disp_fpu(sregs)
721 struct pstate *sregs;
722 {
723
724 int i;
725 float t;
726
727 printf("\n fsr: %08X\n\n", sregs->fsr);
728
729 #ifdef HOST_LITTLE_ENDIAN_FLOAT
730 for (i = 0; i < 32; i++)
731 sregs->fdp[i ^ 1] = sregs->fs[i];
732 #endif
733
734 for (i = 0; i < 32; i++) {
735 t = sregs->fs[i];
736 printf(" f%02d %08x %14e ", i, sregs->fsi[i], sregs->fs[i]);
737 if (!(i & 1))
738 printf("%14e\n", sregs->fd[i >> 1]);
739 else
740 printf("\n");
741 }
742 printf("\n");
743 return (OK);
744 }
745
746 static void
747 disp_regs(sregs,cwp)
748 struct pstate *sregs;
749 int cwp;
750 {
751
752 int i;
753
754 cwp = ((cwp & 0x7) << 4);
755 printf("\n\t INS LOCALS OUTS GLOBALS\n");
756 for (i = 0; i < 8; i++) {
757 printf(" %d: %08X %08X %08X %08X\n", i,
758 sregs->r[(cwp + i + 24) & 0x7f],
759 sregs->r[(cwp + i + 16) & 0x7f], sregs->r[(cwp + i + 8) & 0x7f],
760 sregs->g[i]);
761 }
762 }
763
764 static void print_insn_sparc_sis(uint32 addr, struct disassemble_info *info)
765 {
766 unsigned char i[4];
767
768 sis_memory_read(addr, i, 4);
769 dinfo.buffer_vma = addr;
770 dinfo.buffer_length = 4;
771 dinfo.buffer = i;
772 print_insn_sparc(addr, info);
773 }
774
775 static void
776 disp_ctrl(sregs)
777 struct pstate *sregs;
778 {
779
780 unsigned char i[4];
781
782 printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
783 sregs->psr, sregs->wim, sregs->tbr, sregs->y);
784 sis_memory_read(sregs->pc, i, 4);
785 printf("\n pc: %08X = %02X%02X%02X%02X ", sregs->pc,i[0],i[1],i[2],i[3]);
786 print_insn_sparc_sis(sregs->pc, &dinfo);
787 sis_memory_read(sregs->npc, i, 4);
788 printf("\n npc: %08X = %02X%02X%02X%02X ",sregs->npc,i[0],i[1],i[2],i[3]);
789 print_insn_sparc_sis(sregs->npc, &dinfo);
790 if (sregs->err_mode)
791 printf("\n IU in error mode");
792 printf("\n\n");
793 }
794
795 static void
796 disp_mem(addr, len)
797 uint32 addr;
798 uint32 len;
799 {
800
801 uint32 i;
802 unsigned char data[4];
803 uint32 mem[4], j;
804 char *p;
805
806 for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
807 printf("\n %8X ", i);
808 for (j = 0; j < 4; j++) {
809 sis_memory_read((i + (j * 4)), data, 4);
810 printf("%02x%02x%02x%02x ", data[0],data[1],data[2],data[3]);
811 mem[j] = *((int *) &data);
812 }
813 printf(" ");
814 p = (char *) mem;
815 for (j = 0; j < 16; j++) {
816 if (isprint(p[j]))
817 putchar(p[j]);
818 else
819 putchar('.');
820 }
821 }
822 printf("\n\n");
823 }
824
825 void
826 dis_mem(addr, len, info)
827 uint32 addr;
828 uint32 len;
829 struct disassemble_info *info;
830 {
831 uint32 i;
832 unsigned char data[4];
833
834 for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
835 sis_memory_read(i, data, 4);
836 printf(" %08x %02x%02x%02x%02x ", i, data[0],data[1],data[2],data[3]);
837 print_insn_sparc_sis(i, info);
838 if (i >= 0xfffffffc) break;
839 printf("\n");
840 }
841 }
842
843 /* Add event to event queue */
844
845 void
846 event(cfunc, arg, delta)
847 void (*cfunc) ();
848 int32 arg;
849 uint64 delta;
850 {
851 struct evcell *ev1, *evins;
852
853 if (ebase.freeq == NULL) {
854 printf("Error, too many events in event queue\n");
855 return;
856 }
857 ev1 = &ebase.eq;
858 delta += ebase.simtime;
859 while ((ev1->nxt != NULL) && (ev1->nxt->time <= delta)) {
860 ev1 = ev1->nxt;
861 }
862 if (ev1->nxt == NULL) {
863 ev1->nxt = ebase.freeq;
864 ebase.freeq = ebase.freeq->nxt;
865 ev1->nxt->nxt = NULL;
866 } else {
867 evins = ebase.freeq;
868 ebase.freeq = ebase.freeq->nxt;
869 evins->nxt = ev1->nxt;
870 ev1->nxt = evins;
871 }
872 ev1->nxt->time = delta;
873 ev1->nxt->cfunc = cfunc;
874 ev1->nxt->arg = arg;
875 }
876
877 #if 0 /* apparently not used */
878 void
879 stop_event()
880 {
881 }
882 #endif
883
884 void
885 init_event()
886 {
887 int32 i;
888
889 ebase.eq.nxt = NULL;
890 ebase.freeq = evbuf;
891 for (i = 0; i < EVENT_MAX; i++) {
892 evbuf[i].nxt = &evbuf[i + 1];
893 }
894 evbuf[EVENT_MAX - 1].nxt = NULL;
895 }
896
897 void
898 set_int(level, callback, arg)
899 int32 level;
900 void (*callback) ();
901 int32 arg;
902 {
903 irqarr[level & 0x0f].callback = callback;
904 irqarr[level & 0x0f].arg = arg;
905 }
906
907 /* Advance simulator time */
908
909 void
910 advance_time(sregs)
911 struct pstate *sregs;
912 {
913
914 struct evcell *evrem;
915 void (*cfunc) ();
916 uint32 arg;
917 uint64 endtime;
918
919 #ifdef STAT
920 sregs->fholdt += sregs->fhold;
921 sregs->holdt += sregs->hold;
922 sregs->icntt += sregs->icnt;
923 #endif
924
925 endtime = ebase.simtime + sregs->icnt + sregs->hold + sregs->fhold;
926
927 while ((ebase.eq.nxt->time <= (endtime)) && (ebase.eq.nxt != NULL)) {
928 ebase.simtime = ebase.eq.nxt->time;
929 cfunc = ebase.eq.nxt->cfunc;
930 arg = ebase.eq.nxt->arg;
931 evrem = ebase.eq.nxt;
932 ebase.eq.nxt = ebase.eq.nxt->nxt;
933 evrem->nxt = ebase.freeq;
934 ebase.freeq = evrem;
935 cfunc(arg);
936 }
937 ebase.simtime = endtime;
938
939 }
940
941 uint32
942 now()
943 {
944 return(ebase.simtime);
945 }
946
947
948 /* Advance time until an external interrupt is seen */
949
950 int
951 wait_for_irq()
952 {
953 struct evcell *evrem;
954 void (*cfunc) ();
955 int32 arg;
956 uint64 endtime;
957
958 if (ebase.eq.nxt == NULL)
959 printf("Warning: event queue empty - power-down mode not entered\n");
960 endtime = ebase.simtime;
961 while (!ext_irl && (ebase.eq.nxt != NULL)) {
962 ebase.simtime = ebase.eq.nxt->time;
963 cfunc = ebase.eq.nxt->cfunc;
964 arg = ebase.eq.nxt->arg;
965 evrem = ebase.eq.nxt;
966 ebase.eq.nxt = ebase.eq.nxt->nxt;
967 evrem->nxt = ebase.freeq;
968 ebase.freeq = evrem;
969 cfunc(arg);
970 if (ctrl_c) {
971 printf("\bwarning: power-down mode interrupted\n");
972 break;
973 }
974 }
975 sregs.pwdtime += ebase.simtime - endtime;
976 return (ebase.simtime - endtime);
977 }
978
979 int
980 check_bpt(sregs)
981 struct pstate *sregs;
982 {
983 int32 i;
984
985 if ((sregs->bphit) || (sregs->annul))
986 return (0);
987 for (i = 0; i < (int32) sregs->bptnum; i++) {
988 if (sregs->pc == sregs->bpts[i])
989 return (BPT_HIT);
990 }
991 return (0);
992 }
993
994 void
995 reset_all()
996 {
997 init_event(); /* Clear event queue */
998 init_regs(&sregs);
999 reset();
1000 #ifdef ERRINJ
1001 errinjstart();
1002 #endif
1003 }
1004
1005 void
1006 sys_reset()
1007 {
1008 reset_all();
1009 sregs.trap = 256; /* Force fake reset trap */
1010 }
1011
1012 void
1013 sys_halt()
1014 {
1015 sregs.trap = 257; /* Force fake halt trap */
1016 }
1017
1018 #include "ansidecl.h"
1019
1020 #include <stdarg.h>
1021
1022 #include "libiberty.h"
1023 #include "bfd.h"
1024
1025 #define min(A, B) (((A) < (B)) ? (A) : (B))
1026 #define LOAD_ADDRESS 0
1027
1028 int
1029 bfd_load(fname)
1030 char *fname;
1031 {
1032 asection *section;
1033 bfd *pbfd;
1034 const bfd_arch_info_type *arch;
1035
1036 pbfd = bfd_openr(fname, 0);
1037
1038 if (pbfd == NULL) {
1039 printf("open of %s failed\n", fname);
1040 return (-1);
1041 }
1042 if (!bfd_check_format(pbfd, bfd_object)) {
1043 printf("file %s doesn't seem to be an object file\n", fname);
1044 return (-1);
1045 }
1046
1047 arch = bfd_get_arch_info (pbfd);
1048 if (bfd_little_endian (pbfd) || arch->mach == bfd_mach_sparc_sparclite_le)
1049 current_target_byte_order = LITTLE_ENDIAN;
1050 else
1051 current_target_byte_order = BIG_ENDIAN;
1052 if (sis_verbose)
1053 printf("file %s is %s-endian.\n", fname,
1054 current_target_byte_order == BIG_ENDIAN ? "big" : "little");
1055
1056 if (sis_verbose)
1057 printf("loading %s:", fname);
1058 for (section = pbfd->sections; section; section = section->next) {
1059 if (bfd_get_section_flags(pbfd, section) & SEC_ALLOC) {
1060 bfd_vma section_address;
1061 unsigned long section_size;
1062 const char *section_name;
1063
1064 section_name = bfd_get_section_name(pbfd, section);
1065
1066 section_address = bfd_get_section_vma(pbfd, section);
1067 /*
1068 * Adjust sections from a.out files, since they don't carry their
1069 * addresses with.
1070 */
1071 if (bfd_get_flavour(pbfd) == bfd_target_aout_flavour) {
1072 if (strcmp (section_name, ".text") == 0)
1073 section_address = bfd_get_start_address (pbfd);
1074 else if (strcmp (section_name, ".data") == 0) {
1075 /* Read the first 8 bytes of the data section.
1076 There should be the string 'DaTa' followed by
1077 a word containing the actual section address. */
1078 struct data_marker
1079 {
1080 char signature[4]; /* 'DaTa' */
1081 unsigned char sdata[4]; /* &sdata */
1082 } marker;
1083 bfd_get_section_contents (pbfd, section, &marker, 0,
1084 sizeof (marker));
1085 if (strncmp (marker.signature, "DaTa", 4) == 0)
1086 {
1087 if (current_target_byte_order == BIG_ENDIAN)
1088 section_address = bfd_getb32 (marker.sdata);
1089 else
1090 section_address = bfd_getl32 (marker.sdata);
1091 }
1092 }
1093 }
1094
1095 section_size = bfd_section_size(pbfd, section);
1096
1097 if (sis_verbose)
1098 printf("\nsection %s at 0x%08lx (0x%lx bytes)",
1099 section_name, section_address, section_size);
1100
1101 /* Text, data or lit */
1102 if (bfd_get_section_flags(pbfd, section) & SEC_LOAD) {
1103 file_ptr fptr;
1104
1105 fptr = 0;
1106
1107 while (section_size > 0) {
1108 char buffer[1024];
1109 int count;
1110
1111 count = min(section_size, 1024);
1112
1113 bfd_get_section_contents(pbfd, section, buffer, fptr, count);
1114
1115 sis_memory_write(section_address, buffer, count);
1116
1117 section_address += count;
1118 fptr += count;
1119 section_size -= count;
1120 }
1121 } else /* BSS */
1122 if (sis_verbose)
1123 printf("(not loaded)");
1124 }
1125 }
1126 if (sis_verbose)
1127 printf("\n");
1128
1129 return(bfd_get_start_address (pbfd));
1130 }
GDB Binutils - Deliverables
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