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[/] [openrisc/] [trunk/] [gnu-stable/] [gdb-7.2/] [sim/] [erc32/] [func.c] - Blame information for rev 835

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1 330 jeremybenn 
/*
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 2 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, write to the Free Software Foundation, Inc., 675
19 
 * Mass Ave, Cambridge, MA 02139, USA.
20 
 *
21 
 */
22 
 
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 PARAMS ((struct pstate *sregs, char *fname));
67 
static void     set_rega PARAMS ((struct pstate *sregs, char *reg, uint32 rval));
68 
static void     disp_reg PARAMS ((struct pstate *sregs, char *reg));
69 
static uint32   limcalc PARAMS ((float32 freq));
70 
static void     int_handler PARAMS ((int32 sig));
71 
static void     init_event PARAMS ((void));
72 
static int      disp_fpu PARAMS ((struct pstate  *sregs));
73 
static void     disp_regs PARAMS ((struct pstate  *sregs, int cwp));
74 
static void     disp_ctrl PARAMS ((struct pstate *sregs));
75 
static void     disp_mem PARAMS ((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 
            printf("resuming at 0x%08x\n",sregs->pc);
472 
            if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
473 
                stat = run_sim(sregs, VAL(cmd2), 0);
474 
            } else {
475 
                stat = run_sim(sregs, UINT64_MAX, 0);
476 
            }
477 
            daddr = sregs->pc;
478 
            sim_halt();
479 
        } else if (strncmp(cmd1, "help", clen) == 0) {
480 
            gen_help();
481 
        } else if (strncmp(cmd1, "history", clen) == 0) {
482 
            if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
483 
                sregs->histlen = VAL(cmd1);
484 
                if (sregs->histbuf != NULL)
485 
                    free(sregs->histbuf);
486 
                sregs->histbuf = (struct histype *) calloc(sregs->histlen, sizeof(struct histype));
487 
                printf("trace history length = %d\n\r", sregs->histlen);
488 
                sregs->histind = 0;
489 
 
490 
            } else {
491 
                j = sregs->histind;
492 
                for (i = 0; i < sregs->histlen; i++) {
493 
                    if (j >= sregs->histlen)
494 
                        j = 0;
495 
                    printf(" %8d ", sregs->histbuf[j].time);
496 
                    dis_mem(sregs->histbuf[j].addr, 1, &dinfo);
497 
                    j++;
498 
                }
499 
            }
500 
 
501 
        } else if (strncmp(cmd1, "load", clen) == 0) {
502 
            if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
503 
                last_load_addr = bfd_load(cmd1);
504 
                while ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
505 
                    last_load_addr = bfd_load(cmd1);
506 
            } else {
507 
                printf("load: no file specified\n");
508 
            }
509 
        } else if (strncmp(cmd1, "mem", clen) == 0) {
510 
            if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
511 
                daddr = VAL(cmd1);
512 
            if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL)
513 
                len = VAL(cmd2);
514 
            else
515 
                len = 64;
516 
            disp_mem(daddr, len);
517 
            daddr += len;
518 
        } else if (strncmp(cmd1, "perf", clen) == 0) {
519 
            cmd1 = strtok(NULL, " \t\n\r");
520 
            if ((cmd1 != NULL) &&
521 
                (strncmp(cmd1, "reset", strlen(cmd1)) == 0)) {
522 
                reset_stat(sregs);
523 
            } else
524 
                show_stat(sregs);
525 
        } else if (strncmp(cmd1, "quit", clen) == 0) {
526 
            exit(0);
527 
        } else if (strncmp(cmd1, "reg", clen) == 0) {
528 
            cmd1 = strtok(NULL, " \t\n\r");
529 
            cmd2 = strtok(NULL, " \t\n\r");
530 
            if (cmd2 != NULL)
531 
                set_rega(sregs, cmd1, VAL(cmd2));
532 
            else if (cmd1 != NULL)
533 
                disp_reg(sregs, cmd1);
534 
            else {
535 
                disp_regs(sregs,sregs->psr);
536 
                disp_ctrl(sregs);
537 
            }
538 
        } else if (strncmp(cmd1, "reset", clen) == 0) {
539 
            ebase.simtime = 0;
540 
            reset_all();
541 
            reset_stat(sregs);
542 
        } else if (strncmp(cmd1, "run", clen) == 0) {
543 
            ebase.simtime = 0;
544 
            reset_all();
545 
            reset_stat(sregs);
546 
            if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
547 
                stat = run_sim(sregs, UINT64_MAX, 0);
548 
            } else {
549 
                stat = run_sim(sregs, VAL(cmd1), 0);
550 
            }
551 
            daddr = sregs->pc;
552 
            sim_halt();
553 
        } else if (strncmp(cmd1, "shell", clen) == 0) {
554 
            if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
555 
                system(&cmdsave[clen]);
556 
            }
557 
        } else if (strncmp(cmd1, "step", clen) == 0) {
558 
            stat = run_sim(sregs, 1, 1);
559 
            daddr = sregs->pc;
560 
            sim_halt();
561 
        } else if (strncmp(cmd1, "tcont", clen) == 0) {
562 
            sregs->tlimit = limcalc(sregs->freq);
563 
            stat = run_sim(sregs, UINT64_MAX, 0);
564 
            daddr = sregs->pc;
565 
            sim_halt();
566 
        } else if (strncmp(cmd1, "tgo", clen) == 0) {
567 
            if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
568 
                len = last_load_addr;
569 
            } else {
570 
                len = VAL(cmd1);
571 
                sregs->tlimit = limcalc(sregs->freq);
572 
            }
573 
            sregs->pc = len & ~3;
574 
            sregs->npc = sregs->pc + 4;
575 
            printf("resuming at 0x%08x\n",sregs->pc);
576 
            stat = run_sim(sregs, UINT64_MAX, 0);
577 
            daddr = sregs->pc;
578 
            sim_halt();
579 
        } else if (strncmp(cmd1, "tlimit", clen) == 0) {
580 
           sregs->tlimit = limcalc(sregs->freq);
581 
           if (sregs->tlimit != (uint32) -1)
582 
              printf("simulation limit = %u (%.3f ms)\n",(uint32) sregs->tlimit,
583 
                sregs->tlimit / sregs->freq / 1000);
584 
        } else if (strncmp(cmd1, "tra", clen) == 0) {
585 
            if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
586 
                stat = run_sim(sregs, UINT64_MAX, 1);
587 
            } else {
588 
                stat = run_sim(sregs, VAL(cmd1), 1);
589 
            }
590 
            printf("\n");
591 
            daddr = sregs->pc;
592 
            sim_halt();
593 
        } else if (strncmp(cmd1, "trun", clen) == 0) {
594 
            ebase.simtime = 0;
595 
            reset_all();
596 
            reset_stat(sregs);
597 
            sregs->tlimit = limcalc(sregs->freq);
598 
            stat = run_sim(sregs, UINT64_MAX, 0);
599 
            daddr = sregs->pc;
600 
            sim_halt();
601 
        } else
602 
            printf("syntax error\n");
603 
    }
604 
    if (cmdsave != NULL)
605 
        free(cmdsave);
606 
    return (stat);
607 
}
608 
 
609 
 
610 
void
611 
reset_stat(sregs)
612 
    struct pstate  *sregs;
613 
{
614 
    sregs->tottime = 0;
615 
    sregs->pwdtime = 0;
616 
    sregs->ninst = 0;
617 
    sregs->fholdt = 0;
618 
    sregs->holdt = 0;
619 
    sregs->icntt = 0;
620 
    sregs->finst = 0;
621 
    sregs->nstore = 0;
622 
    sregs->nload = 0;
623 
    sregs->nbranch = 0;
624 
    sregs->simstart = ebase.simtime;
625 
 
626 
}
627 
 
628 
void
629 
show_stat(sregs)
630 
    struct pstate  *sregs;
631 
{
632 
    uint32          iinst;
633 
    uint32          stime, tottime;
634 
 
635 
    if (sregs->tottime == 0) tottime = 1; else tottime = sregs->tottime;
636 
    stime = ebase.simtime - sregs->simstart;    /* Total simulated time */
637 
#ifdef STAT
638 
 
639 
    iinst = sregs->ninst - sregs->finst - sregs->nload - sregs->nstore -
640 
        sregs->nbranch;
641 
#endif
642 
 
643 
    printf("\n Cycles       : %9d\n\r", ebase.simtime - sregs->simstart);
644 
    printf(" Instructions : %9d\n", sregs->ninst);
645 
 
646 
#ifdef STAT
647 
    printf("   integer    : %9.2f %%\n", 100.0 * (float) iinst / (float) sregs->ninst);
648 
    printf("   load       : %9.2f %%\n",
649 
           100.0 * (float) sregs->nload / (float) sregs->ninst);
650 
    printf("   store      : %9.2f %%\n",
651 
           100.0 * (float) sregs->nstore / (float) sregs->ninst);
652 
    printf("   branch     : %9.2f %%\n",
653 
           100.0 * (float) sregs->nbranch / (float) sregs->ninst);
654 
    printf("   float      : %9.2f %%\n",
655 
           100.0 * (float) sregs->finst / (float) sregs->ninst);
656 
    printf(" Integer CPI  : %9.2f\n",
657 
           ((float) (stime - sregs->pwdtime - sregs->fholdt - sregs->finst))
658 
           /
659 
           (float) (sregs->ninst - sregs->finst));
660 
    printf(" Float CPI    : %9.2f\n",
661 
           ((float) sregs->fholdt / (float) sregs->finst) + 1.0);
662 
#endif
663 
    printf(" Overall CPI  : %9.2f\n",
664 
           (float) (stime - sregs->pwdtime) / (float) sregs->ninst);
665 
    printf("\n ERC32 performance (%4.1f MHz): %5.2f MOPS (%5.2f MIPS, %5.2f MFLOPS)\n",
666 
           sregs->freq, sregs->freq * (float) sregs->ninst / (float) (stime - sregs->pwdtime),
667 
           sregs->freq * (float) (sregs->ninst - sregs->finst) /
668 
           (float) (stime - sregs->pwdtime),
669 
     sregs->freq * (float) sregs->finst / (float) (stime - sregs->pwdtime));
670 
    printf(" Simulated ERC32 time        : %5.2f ms\n", (float) (ebase.simtime - sregs->simstart) / 1000.0 / sregs->freq);
671 
    printf(" Processor utilisation       : %5.2f %%\n", 100.0 * (1.0 - ((float) sregs->pwdtime / (float) stime)));
672 
    printf(" Real-time / simulator-time  : 1/%.2f \n",
673 
      ((float) sregs->tottime) / ((float) (stime) / (sregs->freq * 1.0E6)));
674 
    printf(" Simulator performance       : %d KIPS\n",sregs->ninst/tottime/1000);
675 
    printf(" Used time (sys + user)      : %3d s\n\n", sregs->tottime);
676 
}
677 
 
678 
 
679 
 
680 
void
681 
init_bpt(sregs)
682 
    struct pstate  *sregs;
683 
{
684 
    sregs->bptnum = 0;
685 
    sregs->histlen = 0;
686 
    sregs->histind = 0;
687 
    sregs->histbuf = NULL;
688 
    sregs->tlimit = -1;
689 
}
690 
 
691 
static void
692 
int_handler(sig)
693 
    int32           sig;
694 
{
695 
    if (sig != 2)
696 
        printf("\n\n Signal handler error  (%d)\n\n", sig);
697 
    ctrl_c = 1;
698 
}
699 
 
700 
void
701 
init_signals()
702 
{
703 
    typedef void    (*PFI) ();
704 
    static PFI      int_tab[2];
705 
 
706 
    int_tab[0] = signal(SIGTERM, int_handler);
707 
    int_tab[1] = signal(SIGINT, int_handler);
708 
}
709 
 
710 
 
711 
extern struct disassemble_info dinfo;
712 
 
713 
struct estate   ebase;
714 
struct evcell   evbuf[EVENT_MAX];
715 
struct irqcell  irqarr[16];
716 
 
717 
static int
718 
disp_fpu(sregs)
719 
    struct pstate  *sregs;
720 
{
721 
 
722 
    int         i;
723 
    float       t;
724 
 
725 
    printf("\n fsr: %08X\n\n", sregs->fsr);
726 
 
727 
#ifdef HOST_LITTLE_ENDIAN_FLOAT
728 
    for (i = 0; i < 32; i++)
729 
      sregs->fdp[i ^ 1] = sregs->fs[i];
730 
#endif
731 
 
732 
    for (i = 0; i < 32; i++) {
733 
        t = sregs->fs[i];
734 
        printf(" f%02d  %08x  %14e  ", i, sregs->fsi[i], sregs->fs[i]);
735 
        if (!(i & 1))
736 
            printf("%14e\n", sregs->fd[i >> 1]);
737 
        else
738 
            printf("\n");
739 
    }
740 
    printf("\n");
741 
    return (OK);
742 
}
743 
 
744 
static void
745 
disp_regs(sregs,cwp)
746 
    struct pstate  *sregs;
747 
    int cwp;
748 
{
749 
 
750 
    int           i;
751 
 
752 
    cwp = ((cwp & 0x7) << 4);
753 
    printf("\n\t  INS       LOCALS      OUTS     GLOBALS\n");
754 
    for (i = 0; i < 8; i++) {
755 
        printf("   %d:  %08X   %08X   %08X   %08X\n", i,
756 
               sregs->r[(cwp + i + 24) & 0x7f],
757 
            sregs->r[(cwp + i + 16) & 0x7f], sregs->r[(cwp + i + 8) & 0x7f],
758 
               sregs->g[i]);
759 
    }
760 
}
761 
 
762 
static void
763 
disp_ctrl(sregs)
764 
    struct pstate  *sregs;
765 
{
766 
 
767 
    unsigned char           i[4];
768 
 
769 
    printf("\n psr: %08X   wim: %08X   tbr: %08X   y: %08X\n",
770 
           sregs->psr, sregs->wim, sregs->tbr, sregs->y);
771 
    sis_memory_read(sregs->pc, i, 4);
772 
    printf("\n  pc: %08X = %02X%02X%02X%02X    ", sregs->pc,i[0],i[1],i[2],i[3]);
773 
    print_insn_sparc(sregs->pc, &dinfo);
774 
    sis_memory_read(sregs->npc, i, 4);
775 
    printf("\n npc: %08X = %02X%02X%02X%02X    ",sregs->npc,i[0],i[1],i[2],i[3]);
776 
    print_insn_sparc(sregs->npc, &dinfo);
777 
    if (sregs->err_mode)
778 
        printf("\n IU in error mode");
779 
    printf("\n\n");
780 
}
781 
 
782 
static void
783 
disp_mem(addr, len)
784 
    uint32          addr;
785 
    uint32          len;
786 
{
787 
 
788 
    uint32          i;
789 
    unsigned char   data[4];
790 
    uint32          mem[4], j;
791 
    char           *p;
792 
 
793 
    for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
794 
        printf("\n %8X  ", i);
795 
        for (j = 0; j < 4; j++) {
796 
            sis_memory_read((i + (j * 4)), data, 4);
797 
            printf("%02x%02x%02x%02x  ", data[0],data[1],data[2],data[3]);
798 
            mem[j] = *((int *) &data);
799 
        }
800 
        printf("  ");
801 
        p = (char *) mem;
802 
        for (j = 0; j < 16; j++) {
803 
            if (isprint(p[j]))
804 
                putchar(p[j]);
805 
            else
806 
                putchar('.');
807 
        }
808 
    }
809 
    printf("\n\n");
810 
}
811 
 
812 
void
813 
dis_mem(addr, len, info)
814 
    uint32          addr;
815 
    uint32          len;
816 
    struct disassemble_info *info;
817 
{
818 
    uint32          i;
819 
    unsigned char   data[4];
820 
 
821 
    for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
822 
        sis_memory_read(i, data, 4);
823 
        printf(" %08x  %02x%02x%02x%02x  ", i, data[0],data[1],data[2],data[3]);
824 
        print_insn_sparc(i, info);
825 
        if (i >= 0xfffffffc) break;
826 
        printf("\n");
827 
    }
828 
}
829 
 
830 
/* Add event to event queue */
831 
 
832 
void
833 
event(cfunc, arg, delta)
834 
    void            (*cfunc) ();
835 
    int32           arg;
836 
    uint64          delta;
837 
{
838 
    struct evcell  *ev1, *evins;
839 
 
840 
    if (ebase.freeq == NULL) {
841 
        printf("Error, too many events in event queue\n");
842 
        return;
843 
    }
844 
    ev1 = &ebase.eq;
845 
    delta += ebase.simtime;
846 
    while ((ev1->nxt != NULL) && (ev1->nxt->time <= delta)) {
847 
        ev1 = ev1->nxt;
848 
    }
849 
    if (ev1->nxt == NULL) {
850 
        ev1->nxt = ebase.freeq;
851 
        ebase.freeq = ebase.freeq->nxt;
852 
        ev1->nxt->nxt = NULL;
853 
    } else {
854 
        evins = ebase.freeq;
855 
        ebase.freeq = ebase.freeq->nxt;
856 
        evins->nxt = ev1->nxt;
857 
        ev1->nxt = evins;
858 
    }
859 
    ev1->nxt->time = delta;
860 
    ev1->nxt->cfunc = cfunc;
861 
    ev1->nxt->arg = arg;
862 
}
863 
 
864 
#if 0   /* apparently not used */
865 
void
866 
stop_event()
867 
{
868 
}
869 
#endif
870 
 
871 
void
872 
init_event()
873 
{
874 
    int32           i;
875 
 
876 
    ebase.eq.nxt = NULL;
877 
    ebase.freeq = evbuf;
878 
    for (i = 0; i < EVENT_MAX; i++) {
879 
        evbuf[i].nxt = &evbuf[i + 1];
880 
    }
881 
    evbuf[EVENT_MAX - 1].nxt = NULL;
882 
}
883 
 
884 
void
885 
set_int(level, callback, arg)
886 
    int32           level;
887 
    void            (*callback) ();
888 
    int32           arg;
889 
{
890 
    irqarr[level & 0x0f].callback = callback;
891 
    irqarr[level & 0x0f].arg = arg;
892 
}
893 
 
894 
/* Advance simulator time */
895 
 
896 
void
897 
advance_time(sregs)
898 
    struct pstate  *sregs;
899 
{
900 
 
901 
    struct evcell  *evrem;
902 
    void            (*cfunc) ();
903 
    uint32          arg;
904 
    uint64          endtime;
905 
 
906 
#ifdef STAT
907 
    sregs->fholdt += sregs->fhold;
908 
    sregs->holdt += sregs->hold;
909 
    sregs->icntt += sregs->icnt;
910 
#endif
911 
 
912 
    endtime = ebase.simtime + sregs->icnt + sregs->hold + sregs->fhold;
913 
 
914 
    while ((ebase.eq.nxt->time <= (endtime)) && (ebase.eq.nxt != NULL)) {
915 
        ebase.simtime = ebase.eq.nxt->time;
916 
        cfunc = ebase.eq.nxt->cfunc;
917 
        arg = ebase.eq.nxt->arg;
918 
        evrem = ebase.eq.nxt;
919 
        ebase.eq.nxt = ebase.eq.nxt->nxt;
920 
        evrem->nxt = ebase.freeq;
921 
        ebase.freeq = evrem;
922 
        cfunc(arg);
923 
    }
924 
    ebase.simtime = endtime;
925 
 
926 
}
927 
 
928 
uint32
929 
now()
930 
{
931 
    return(ebase.simtime);
932 
}
933 
 
934 
 
935 
/* Advance time until an external interrupt is seen */
936 
 
937 
int
938 
wait_for_irq()
939 
{
940 
    struct evcell  *evrem;
941 
    void            (*cfunc) ();
942 
    int32           arg;
943 
    uint64          endtime;
944 
 
945 
    if (ebase.eq.nxt == NULL)
946 
        printf("Warning: event queue empty - power-down mode not entered\n");
947 
    endtime = ebase.simtime;
948 
    while (!ext_irl && (ebase.eq.nxt != NULL)) {
949 
        ebase.simtime = ebase.eq.nxt->time;
950 
        cfunc = ebase.eq.nxt->cfunc;
951 
        arg = ebase.eq.nxt->arg;
952 
        evrem = ebase.eq.nxt;
953 
        ebase.eq.nxt = ebase.eq.nxt->nxt;
954 
        evrem->nxt = ebase.freeq;
955 
        ebase.freeq = evrem;
956 
        cfunc(arg);
957 
        if (ctrl_c) {
958 
            printf("\bwarning: power-down mode interrupted\n");
959 
            break;
960 
        }
961 
    }
962 
    sregs.pwdtime += ebase.simtime - endtime;
963 
    return (ebase.simtime - endtime);
964 
}
965 
 
966 
int
967 
check_bpt(sregs)
968 
    struct pstate  *sregs;
969 
{
970 
    int32           i;
971 
 
972 
    if ((sregs->bphit) || (sregs->annul))
973 
        return (0);
974 
    for (i = 0; i < (int32) sregs->bptnum; i++) {
975 
        if (sregs->pc == sregs->bpts[i])
976 
            return (BPT_HIT);
977 
    }
978 
    return (0);
979 
}
980 
 
981 
void
982 
reset_all()
983 
{
984 
    init_event();               /* Clear event queue */
985 
    init_regs(&sregs);
986 
    reset();
987 
#ifdef ERRINJ
988 
    errinjstart();
989 
#endif
990 
}
991 
 
992 
void
993 
sys_reset()
994 
{
995 
    reset_all();
996 
    sregs.trap = 256;           /* Force fake reset trap */
997 
}
998 
 
999 
void
1000 
sys_halt()
1001 
{
1002 
    sregs.trap = 257;           /* Force fake halt trap */
1003 
}
1004 
 
1005 
#include "ansidecl.h"
1006 
 
1007 
#include <stdarg.h>
1008 
 
1009 
#include "libiberty.h"
1010 
#include "bfd.h"
1011 
 
1012 
#define min(A, B) (((A) < (B)) ? (A) : (B))
1013 
#define LOAD_ADDRESS 0
1014 
 
1015 
int
1016 
bfd_load(fname)
1017 
    char           *fname;
1018 
{
1019 
    asection       *section;
1020 
    bfd            *pbfd;
1021 
    const bfd_arch_info_type *arch;
1022 
 
1023 
    pbfd = bfd_openr(fname, 0);
1024 
 
1025 
    if (pbfd == NULL) {
1026 
        printf("open of %s failed\n", fname);
1027 
        return (-1);
1028 
    }
1029 
    if (!bfd_check_format(pbfd, bfd_object)) {
1030 
        printf("file %s  doesn't seem to be an object file\n", fname);
1031 
        return (-1);
1032 
    }
1033 
 
1034 
    arch = bfd_get_arch_info (pbfd);
1035 
    if (bfd_little_endian (pbfd) || arch->mach == bfd_mach_sparc_sparclite_le)
1036 
        current_target_byte_order = LITTLE_ENDIAN;
1037 
    else
1038 
        current_target_byte_order = BIG_ENDIAN;
1039 
    if (sis_verbose)
1040 
        printf("file %s is %s-endian.\n", fname,
1041 
               current_target_byte_order == BIG_ENDIAN ? "big" : "little");
1042 
 
1043 
    if (sis_verbose)
1044 
        printf("loading %s:", fname);
1045 
    for (section = pbfd->sections; section; section = section->next) {
1046 
        if (bfd_get_section_flags(pbfd, section) & SEC_ALLOC) {
1047 
            bfd_vma         section_address;
1048 
            unsigned long   section_size;
1049 
            const char     *section_name;
1050 
 
1051 
            section_name = bfd_get_section_name(pbfd, section);
1052 
 
1053 
            section_address = bfd_get_section_vma(pbfd, section);
1054 
            /*
1055 
             * Adjust sections from a.out files, since they don't carry their
1056 
             * addresses with.
1057 
             */
1058 
            if (bfd_get_flavour(pbfd) == bfd_target_aout_flavour) {
1059 
                if (strcmp (section_name, ".text") == 0)
1060 
                    section_address = bfd_get_start_address (pbfd);
1061 
                else if (strcmp (section_name, ".data") == 0) {
1062 
                    /* Read the first 8 bytes of the data section.
1063 
                       There should be the string 'DaTa' followed by
1064 
                       a word containing the actual section address. */
1065 
                    struct data_marker
1066 
                    {
1067 
                        char signature[4];      /* 'DaTa' */
1068 
                        unsigned char sdata[4]; /* &sdata */
1069 
                    } marker;
1070 
                    bfd_get_section_contents (pbfd, section, &marker, 0,
1071 
                                              sizeof (marker));
1072 
                    if (strncmp (marker.signature, "DaTa", 4) == 0)
1073 
                      {
1074 
                        if (current_target_byte_order == BIG_ENDIAN)
1075 
                          section_address = bfd_getb32 (marker.sdata);
1076 
                        else
1077 
                          section_address = bfd_getl32 (marker.sdata);
1078 
                      }
1079 
                }
1080 
            }
1081 
 
1082 
            section_size = bfd_section_size(pbfd, section);
1083 
 
1084 
            if (sis_verbose)
1085 
                printf("\nsection %s at 0x%08lx (0x%lx bytes)",
1086 
                       section_name, section_address, section_size);
1087 
 
1088 
            /* Text, data or lit */
1089 
            if (bfd_get_section_flags(pbfd, section) & SEC_LOAD) {
1090 
                file_ptr        fptr;
1091 
 
1092 
                fptr = 0;
1093 
 
1094 
                while (section_size > 0) {
1095 
                    char            buffer[1024];
1096 
                    int             count;
1097 
 
1098 
                    count = min(section_size, 1024);
1099 
 
1100 
                    bfd_get_section_contents(pbfd, section, buffer, fptr, count);
1101 
 
1102 
                    sis_memory_write(section_address, buffer, count);
1103 
 
1104 
                    section_address += count;
1105 
                    fptr += count;
1106 
                    section_size -= count;
1107 
                }
1108 
            } else              /* BSS */
1109 
                if (sis_verbose)
1110 
                    printf("(not loaded)");
1111 
        }
1112 
    }
1113 
    if (sis_verbose)
1114 
        printf("\n");
1115 
 
1116 
    return(bfd_get_start_address (pbfd));
1117 
}

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