Commit | Line | Data |
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4298caf5 ML |
1 | /* Copyright (c) 1982 Regents of the University of California */ |
2 | ||
550fe947 | 3 | static char sccsid[] = "@(#)events.c 1.2 %G%"; |
4298caf5 ML |
4 | |
5 | /* | |
6 | * Event/breakpoint managment. | |
7 | */ | |
8 | ||
9 | #include "defs.h" | |
10 | #include "events.h" | |
11 | #include "main.h" | |
12 | #include "symbols.h" | |
13 | #include "tree.h" | |
14 | #include "eval.h" | |
15 | #include "source.h" | |
16 | #include "mappings.h" | |
17 | #include "process.h" | |
18 | #include "machine.h" | |
19 | #include "lists.h" | |
20 | ||
21 | #ifndef public | |
22 | typedef struct Event *Event; | |
23 | typedef struct Breakpoint *Breakpoint; | |
24 | ||
25 | Boolean inst_tracing; | |
26 | Boolean single_stepping; | |
27 | Boolean isstopped; | |
28 | ||
29 | #include "symbols.h" | |
30 | ||
31 | Symbol linesym; | |
32 | Symbol procsym; | |
33 | Symbol pcsym; | |
34 | Symbol retaddrsym; | |
35 | ||
36 | #define addevent(cond, cmdlist) event_alloc(false, cond, cmdlist) | |
37 | #define event_once(cond, cmdlist) event_alloc(true, cond, cmdlist) | |
38 | ||
39 | #endif | |
40 | ||
41 | struct Event { | |
42 | unsigned int id; | |
43 | Boolean temporary; | |
44 | Node condition; | |
45 | Cmdlist actions; | |
46 | }; | |
47 | ||
48 | struct Breakpoint { | |
49 | Event event; | |
50 | Address bpaddr; | |
51 | Lineno bpline; | |
52 | Cmdlist actions; | |
53 | }; | |
54 | ||
55 | typedef List Eventlist; | |
56 | typedef List Bplist; | |
57 | ||
58 | #define eventlist_append(event, el) list_append(list_item(event), nil, el) | |
59 | #define bplist_append(bp, bl) list_append(list_item(bp), nil, bl) | |
60 | ||
61 | private Eventlist eventlist; /* list of active events */ | |
62 | private Bplist bplist; /* list of active breakpoints */ | |
63 | private Integer eventid; /* id number of next allocated event */ | |
64 | private Integer trid; /* id number of next allocated trace */ | |
65 | ||
66 | typedef struct Trcmd { | |
67 | Integer trid; | |
68 | Event event; | |
69 | Cmdlist cmdlist; | |
70 | } *Trcmd; | |
71 | ||
72 | private List eachline; /* commands to execute after each line */ | |
73 | private List eachinst; /* commands to execute after each instruction */ | |
74 | ||
75 | private Breakpoint bp_alloc(); | |
76 | ||
77 | /* | |
78 | * Initialize breakpoint information. | |
79 | */ | |
80 | ||
81 | private Symbol builtinsym(str, class, type) | |
82 | String str; | |
83 | Symclass class; | |
84 | Symbol type; | |
85 | { | |
86 | Symbol s; | |
87 | ||
88 | s = insert(identname(str, true)); | |
89 | s->language = findlanguage(".s"); | |
90 | s->class = class; | |
91 | s->type = type; | |
92 | return s; | |
93 | } | |
94 | ||
95 | public bpinit() | |
96 | { | |
97 | linesym = builtinsym("$line", VAR, t_int); | |
98 | procsym = builtinsym("$proc", PROC, nil); | |
99 | pcsym = lookup(identname("$pc", true)); | |
100 | if (pcsym == nil) { | |
101 | panic("can't find $pc"); | |
102 | } | |
103 | retaddrsym = builtinsym("$retaddr", VAR, t_int); | |
104 | eventlist = list_alloc(); | |
105 | bplist = list_alloc(); | |
106 | eachline = list_alloc(); | |
107 | eachinst = list_alloc(); | |
108 | } | |
109 | ||
110 | /* | |
111 | * Trap an event and do the associated commands when it occurs. | |
112 | */ | |
113 | ||
114 | public Event event_alloc(istmp, econd, cmdlist) | |
115 | Boolean istmp; | |
116 | Node econd; | |
117 | Cmdlist cmdlist; | |
118 | { | |
119 | register Event e; | |
120 | ||
121 | e = new(Event); | |
122 | ++eventid; | |
123 | e->id = eventid; | |
124 | e->temporary = istmp; | |
125 | e->condition = econd; | |
126 | e->actions = cmdlist; | |
127 | eventlist_append(e, eventlist); | |
128 | translate(e); | |
129 | return e; | |
130 | } | |
131 | ||
132 | /* | |
133 | * Delete the event with the given id. | |
134 | */ | |
135 | ||
136 | public delevent(id) | |
137 | unsigned int id; | |
138 | { | |
139 | Event e; | |
140 | Breakpoint bp; | |
141 | Trcmd t; | |
142 | ||
143 | foreach (Event, e, eventlist) | |
144 | if (e->id == id) { | |
145 | list_delete(list_curitem(eventlist), eventlist); | |
146 | foreach (Breakpoint, bp, bplist) | |
147 | if (bp->event == e) { | |
148 | list_delete(list_curitem(bplist), bplist); | |
149 | } | |
150 | endfor | |
151 | break; | |
152 | } | |
153 | endfor | |
154 | foreach (Trcmd, t, eachline) | |
155 | if (t->event->id == id) { | |
156 | printrmtr(t); | |
157 | list_delete(list_curitem(eachline), eachline); | |
158 | } | |
159 | endfor | |
160 | foreach (Trcmd, t, eachinst) | |
161 | if (t->event->id == id) { | |
162 | printrmtr(t); | |
163 | list_delete(list_curitem(eachinst), eachinst); | |
164 | } | |
165 | endfor | |
166 | if (list_size(eachinst) == 0) { | |
167 | inst_tracing = false; | |
168 | if (list_size(eachline) == 0) { | |
169 | single_stepping = false; | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | /* | |
175 | * Translate an event into the appropriate breakpoints and actions. | |
176 | * While we're at it, turn on the breakpoints if the condition is true. | |
177 | */ | |
178 | ||
179 | private translate(e) | |
180 | Event e; | |
181 | { | |
182 | Breakpoint bp; | |
183 | Symbol s; | |
184 | Node place; | |
185 | Lineno line; | |
186 | Address addr; | |
187 | ||
188 | checkref(e->condition); | |
189 | switch (e->condition->op) { | |
190 | case O_EQ: | |
191 | if (e->condition->value.arg[0]->op == O_SYM) { | |
192 | s = e->condition->value.arg[0]->value.sym; | |
193 | place = e->condition->value.arg[1]; | |
194 | if (s == linesym) { | |
195 | if (place->op == O_QLINE) { | |
196 | line = place->value.arg[1]->value.lcon; | |
197 | addr = objaddr(line, | |
198 | place->value.arg[0]->value.scon); | |
199 | } else { | |
200 | eval(place); | |
201 | line = pop(long); | |
202 | addr = objaddr(line, cursource); | |
203 | } | |
204 | if (addr == NOADDR) { | |
205 | delevent(e->id); | |
206 | beginerrmsg(); | |
207 | fprintf(stderr, "no executable code at line "); | |
208 | prtree(stderr, place); | |
209 | enderrmsg(); | |
210 | } | |
211 | bp = bp_alloc(e, addr, line, e->actions); | |
212 | } else if (s == procsym) { | |
213 | eval(place); | |
214 | s = pop(Symbol); | |
215 | bp = bp_alloc(e, codeloc(s), 0, e->actions); | |
216 | if (isactive(s) and pc != codeloc(program)) { | |
217 | evalcmdlist(e->actions); | |
218 | } | |
219 | } else if (s == pcsym) { | |
220 | eval(place); | |
221 | bp = bp_alloc(e, pop(Address), 0, e->actions); | |
222 | } else { | |
223 | condbp(e); | |
224 | } | |
225 | } else { | |
226 | condbp(e); | |
227 | } | |
228 | break; | |
229 | ||
230 | /* | |
231 | * These should be handled specially. | |
232 | * But for now I'm ignoring the problem. | |
233 | */ | |
234 | case O_AND: | |
235 | case O_OR: | |
236 | default: | |
237 | condbp(e); | |
238 | break; | |
239 | } | |
240 | } | |
241 | ||
242 | /* | |
243 | * Create a breakpoint for a condition that cannot be pinpointed | |
244 | * to happening at a particular address, but one for which we | |
245 | * must single step and check the condition after each statement. | |
246 | */ | |
247 | ||
248 | private condbp(e) | |
249 | Event e; | |
250 | { | |
251 | Symbol p; | |
252 | Breakpoint bp; | |
253 | Cmdlist actions; | |
254 | ||
255 | p = tcontainer(e->condition); | |
256 | if (p == nil) { | |
257 | p = program; | |
258 | } | |
259 | actions = buildcmdlist(build(O_IF, e->condition, e->actions)); | |
260 | actions = buildcmdlist(build(O_TRACEON, false, actions)); | |
261 | bp = bp_alloc(e, codeloc(p), 0, actions); | |
262 | } | |
263 | ||
264 | /* | |
265 | * Determine the deepest nested subprogram that still contains | |
266 | * all elements in the given expression. | |
267 | */ | |
268 | ||
269 | public Symbol tcontainer(exp) | |
270 | Node exp; | |
271 | { | |
272 | Integer i; | |
273 | Symbol s, t, u, v; | |
274 | ||
275 | checkref(exp); | |
276 | s = nil; | |
277 | if (exp->op == O_SYM) { | |
278 | s = container(exp->value.sym); | |
279 | } else if (not isleaf(exp->op)) { | |
280 | for (i = 0; i < nargs(exp->op); i++) { | |
281 | t = tcontainer(exp->value.arg[i]); | |
282 | if (t != nil) { | |
283 | if (s == nil) { | |
284 | s = t; | |
285 | } else { | |
286 | u = s; | |
287 | v = t; | |
288 | while (u != v and u != nil) { | |
289 | u = container(u); | |
290 | v = container(v); | |
291 | } | |
292 | if (u == nil) { | |
293 | panic("bad ancestry for \"%s\"", symname(s)); | |
294 | } else { | |
295 | s = u; | |
296 | } | |
297 | } | |
298 | } | |
299 | } | |
300 | } | |
301 | return s; | |
302 | } | |
303 | ||
304 | /* | |
305 | * Print out what's currently being traced by looking at | |
306 | * the currently active events. | |
307 | * | |
308 | * Some convolution here to translate internal representation | |
309 | * of events back into something more palatable. | |
310 | */ | |
311 | ||
312 | public status() | |
313 | { | |
314 | Event e; | |
315 | Command cmd; | |
316 | ||
317 | foreach (Event, e, eventlist) | |
318 | if (not e->temporary) { | |
319 | if (not isredirected()) { | |
320 | printf("(%d) ", e->id); | |
321 | } | |
322 | cmd = list_element(Command, list_head(e->actions)); | |
323 | if (cmd->op == O_PRINTCALL) { | |
324 | printf("trace "); | |
325 | printname(stdout, cmd->value.sym); | |
326 | } else { | |
327 | if (list_size(e->actions) > 1) { | |
328 | printf("{ "); | |
329 | } | |
330 | foreach (Command, cmd, e->actions) | |
331 | printcmd(stdout, cmd); | |
332 | if (not list_islast()) { | |
333 | printf("; "); | |
334 | } | |
335 | endfor | |
336 | if (list_size(e->actions) > 1) { | |
337 | printf(" }"); | |
338 | } | |
339 | printcond(e->condition); | |
340 | } | |
341 | printf("\n"); | |
342 | } | |
343 | endfor | |
344 | } | |
345 | ||
346 | /* | |
347 | * Print out a condition. | |
348 | */ | |
349 | ||
350 | private printcond(cond) | |
351 | Node cond; | |
352 | { | |
353 | Symbol s; | |
354 | Node place; | |
355 | ||
356 | if (cond->op == O_EQ and cond->value.arg[0]->op == O_SYM) { | |
357 | s = cond->value.arg[0]->value.sym; | |
358 | place = cond->value.arg[1]; | |
359 | if (s == procsym) { | |
360 | if (place->value.sym != program) { | |
361 | printf(" in "); | |
362 | printname(stdout, place->value.sym); | |
363 | } | |
364 | } else if (s == linesym) { | |
365 | printf(" at "); | |
366 | prtree(stdout, place); | |
367 | } else if (s == pcsym or s == retaddrsym) { | |
368 | printf("i at "); | |
369 | prtree(stdout, place); | |
370 | } else { | |
371 | printf(" when "); | |
372 | prtree(stdout, cond); | |
373 | } | |
374 | } else { | |
375 | printf(" when "); | |
376 | prtree(stdout, cond); | |
377 | } | |
378 | } | |
379 | ||
380 | /* | |
381 | * Add a breakpoint to the list and return it. | |
382 | */ | |
383 | ||
384 | private Breakpoint bp_alloc(e, addr, line, actions) | |
385 | Event e; | |
386 | Address addr; | |
387 | Lineno line; | |
388 | Cmdlist actions; | |
389 | { | |
390 | register Breakpoint p; | |
391 | ||
392 | p = new(Breakpoint); | |
393 | p->event = e; | |
394 | p->bpaddr = addr; | |
395 | p->bpline = line; | |
396 | p->actions = actions; | |
397 | if (tracebpts) { | |
398 | printf("new bp at 0x%x\n", addr); | |
399 | fflush(stdout); | |
400 | } | |
401 | bplist_append(p, bplist); | |
402 | return p; | |
403 | } | |
404 | ||
405 | /* | |
406 | * Free all storage in the event and breakpoint tables. | |
407 | */ | |
408 | ||
409 | public bpfree() | |
410 | { | |
411 | register Event e; | |
412 | ||
413 | fixbps(); | |
414 | foreach (Event, e, eventlist) | |
415 | delevent(e->id); | |
416 | list_delete(list_curitem(eventlist), eventlist); | |
417 | endfor | |
418 | } | |
419 | ||
420 | /* | |
421 | * Determine if the program stopped at a known breakpoint | |
422 | * and if so do the associated commands. | |
423 | */ | |
424 | ||
425 | public Boolean bpact() | |
426 | { | |
427 | register Breakpoint p; | |
428 | Boolean found; | |
429 | ||
430 | found = false; | |
431 | foreach (Breakpoint, p, bplist) | |
432 | if (p->bpaddr == pc) { | |
433 | if (tracebpts) { | |
434 | printf("breakpoint found at location 0x%x\n", pc); | |
435 | } | |
436 | found = true; | |
437 | if (p->event->temporary) { | |
438 | delevent(p->event->id); | |
439 | } | |
440 | evalcmdlist(p->actions); | |
441 | } | |
442 | endfor | |
443 | if (isstopped) { | |
444 | printstatus(); | |
445 | } | |
446 | fflush(stdout); | |
447 | return found; | |
448 | } | |
449 | ||
450 | /* | |
451 | * Begin single stepping and executing the given commands after each step. | |
452 | * If the first argument is true step by instructions, otherwise | |
453 | * step by source lines. | |
454 | * | |
455 | * We automatically set a breakpoint at the end of the current procedure | |
456 | * to turn off the given tracing. | |
457 | */ | |
458 | ||
459 | public traceon(inst, event, cmdlist) | |
460 | Boolean inst; | |
461 | Event event; | |
462 | Cmdlist cmdlist; | |
463 | { | |
464 | register Trcmd trcmd; | |
465 | Breakpoint bp; | |
466 | Node until; | |
467 | Cmdlist actions; | |
468 | ||
469 | trcmd = new(Trcmd); | |
470 | ++trid; | |
471 | trcmd->trid = trid; | |
472 | trcmd->event = event; | |
473 | trcmd->cmdlist = cmdlist; | |
474 | single_stepping = true; | |
475 | if (inst) { | |
476 | inst_tracing = true; | |
477 | list_append(list_item(trcmd), nil, eachinst); | |
478 | } else { | |
479 | list_append(list_item(trcmd), nil, eachline); | |
480 | } | |
481 | until = build(O_EQ, build(O_SYM, pcsym), build(O_LCON, return_addr())); | |
482 | actions = buildcmdlist(build(O_TRACEOFF, trcmd->trid)); | |
483 | event_once(until, actions); | |
484 | if (tracebpts) { | |
485 | printf("adding trace %d for event %d\n", trcmd->trid, event->id); | |
486 | } | |
487 | } | |
488 | ||
489 | /* | |
490 | * Turn off some kind of tracing. | |
491 | * Strictly an internal command, this cannot be invoked by the user. | |
492 | */ | |
493 | ||
494 | public traceoff(id) | |
495 | Integer id; | |
496 | { | |
497 | register Trcmd t; | |
498 | register Boolean found; | |
499 | ||
500 | found = false; | |
501 | foreach (Trcmd, t, eachline) | |
502 | if (t->trid == id) { | |
503 | printrmtr(t); | |
504 | list_delete(list_curitem(eachline), eachline); | |
505 | found = true; | |
506 | break; | |
507 | } | |
508 | endfor | |
509 | if (not found) { | |
510 | foreach (Trcmd, t, eachinst) | |
511 | if (t->event->id == id) { | |
512 | printrmtr(t); | |
513 | list_delete(list_curitem(eachinst), eachinst); | |
514 | found = true; | |
515 | break; | |
516 | } | |
517 | endfor | |
518 | if (not found) { | |
519 | panic("missing trid %d", id); | |
520 | } | |
521 | } | |
522 | if (list_size(eachinst) == 0) { | |
523 | inst_tracing = false; | |
524 | if (list_size(eachline) == 0) { | |
525 | single_stepping = false; | |
526 | } | |
527 | } | |
528 | } | |
529 | ||
530 | /* | |
531 | * If breakpoints are being traced, note that a Trcmd is being deleted. | |
532 | */ | |
533 | ||
534 | private printrmtr(t) | |
535 | Trcmd t; | |
536 | { | |
537 | if (tracebpts) { | |
538 | printf("removing trace %d for event %d\n", t->trid, t->event->id); | |
539 | } | |
540 | } | |
541 | ||
542 | /* | |
543 | * Print out news during single step tracing. | |
544 | */ | |
545 | ||
546 | public printnews() | |
547 | { | |
548 | register Trcmd t; | |
549 | ||
550 | foreach (Trcmd, t, eachline) | |
551 | evalcmdlist(t->cmdlist); | |
552 | endfor | |
553 | foreach (Trcmd, t, eachinst) | |
554 | evalcmdlist(t->cmdlist); | |
555 | endfor | |
556 | bpact(); | |
557 | } | |
558 | ||
559 | /* | |
560 | * A procedure call/return has occurred while single-stepping, | |
561 | * note it if we're tracing lines. | |
562 | */ | |
563 | ||
564 | private Boolean chklist(); | |
565 | ||
566 | public callnews(iscall) | |
567 | Boolean iscall; | |
568 | { | |
569 | if (not chklist(eachline, iscall)) { | |
570 | chklist(eachinst, iscall); | |
571 | } | |
572 | } | |
573 | ||
574 | private Boolean chklist(list, iscall) | |
575 | List list; | |
576 | Boolean iscall; | |
577 | { | |
578 | register Trcmd t; | |
579 | register Command cmd; | |
580 | ||
581 | foreach (Trcmd, t, list) | |
582 | foreach (Command, cmd, t->cmdlist) | |
583 | if (cmd->op == O_PRINTSRCPOS and | |
584 | (cmd->value.arg[0] == nil or cmd->value.arg[0]->op == O_QLINE)) { | |
585 | curfunc = whatblock(pc); | |
586 | if (iscall) { | |
587 | printentry(curfunc); | |
588 | } else { | |
589 | printexit(curfunc); | |
590 | } | |
591 | return true; | |
592 | } | |
593 | endfor | |
594 | endfor | |
595 | return false; | |
596 | } | |
597 | ||
598 | /* | |
599 | * When tracing variables we keep a copy of their most recent value | |
600 | * and compare it to the current one each time a breakpoint occurs. | |
601 | * MAXTRSIZE is the maximum size variable we allow. | |
602 | */ | |
603 | ||
604 | #define MAXTRSIZE 512 | |
605 | ||
606 | /* | |
607 | * List of variables being watched. | |
608 | */ | |
609 | ||
610 | typedef struct Trinfo *Trinfo; | |
611 | ||
612 | struct Trinfo { | |
613 | Node variable; | |
614 | Address traddr; | |
615 | Symbol trblock; | |
616 | char *trvalue; | |
617 | }; | |
618 | ||
619 | private List trinfolist; | |
620 | ||
621 | /* | |
622 | * Find the trace information record associated with the given record. | |
623 | * If there isn't one then create it and add it to the list. | |
624 | */ | |
625 | ||
626 | private Trinfo findtrinfo(p) | |
627 | Node p; | |
628 | { | |
629 | register Trinfo tp; | |
630 | Boolean isnew; | |
631 | ||
632 | isnew = true; | |
633 | if (trinfolist == nil) { | |
634 | trinfolist = list_alloc(); | |
635 | } else { | |
636 | foreach (Trinfo, tp, trinfolist) | |
637 | if (tp->variable == p) { | |
638 | isnew = false; | |
639 | break; | |
640 | } | |
641 | endfor | |
642 | } | |
643 | if (isnew) { | |
644 | if (tracebpts) { | |
645 | printf("adding trinfo for \""); | |
646 | prtree(stdout, p); | |
647 | printf("\"\n"); | |
648 | } | |
649 | tp = new(Trinfo); | |
650 | tp->variable = p; | |
651 | tp->traddr = lval(p); | |
652 | tp->trvalue = nil; | |
653 | list_append(list_item(tp), nil, trinfolist); | |
654 | } | |
655 | return tp; | |
656 | } | |
657 | ||
658 | /* | |
659 | * Print out the value of a variable if it has changed since the | |
660 | * last time we checked. | |
661 | */ | |
662 | ||
663 | public printifchanged(p) | |
664 | Node p; | |
665 | { | |
666 | register Trinfo tp; | |
667 | register int n; | |
668 | char buff[MAXTRSIZE]; | |
669 | static Lineno prevline; | |
670 | ||
671 | tp = findtrinfo(p); | |
672 | n = size(p->nodetype); | |
673 | dread(buff, tp->traddr, n); | |
674 | if (tp->trvalue == nil) { | |
675 | tp->trvalue = newarr(char, n); | |
676 | mov(buff, tp->trvalue, n); | |
677 | mov(buff, sp, n); | |
678 | sp += n; | |
679 | printf("initially (at line %d):\t", curline); | |
680 | prtree(stdout, p); | |
681 | printf(" = "); | |
682 | printval(p->nodetype); | |
683 | putchar('\n'); | |
684 | } else if (cmp(tp->trvalue, buff, n) != 0) { | |
685 | mov(buff, tp->trvalue, n); | |
686 | mov(buff, sp, n); | |
687 | sp += n; | |
688 | printf("after line %d:\t", prevline); | |
689 | prtree(stdout, p); | |
690 | printf(" = "); | |
691 | printval(p->nodetype); | |
692 | putchar('\n'); | |
693 | } | |
694 | prevline = curline; | |
695 | } | |
696 | ||
697 | /* | |
698 | * Stop if the value of the given expression has changed. | |
699 | */ | |
700 | ||
701 | public stopifchanged(p) | |
702 | Node p; | |
703 | { | |
704 | register Trinfo tp; | |
705 | register int n; | |
706 | char buff[MAXTRSIZE]; | |
707 | static Lineno prevline; | |
708 | ||
709 | tp = findtrinfo(p); | |
710 | n = size(p->nodetype); | |
711 | dread(buff, tp->traddr, n); | |
712 | if (tp->trvalue == nil) { | |
713 | tp->trvalue = newarr(char, n); | |
714 | mov(buff, tp->trvalue, n); | |
715 | isstopped = true; | |
716 | } else if (cmp(tp->trvalue, buff, n) != 0) { | |
717 | mov(buff, tp->trvalue, n); | |
718 | isstopped = true; | |
719 | } | |
720 | prevline = curline; | |
721 | } | |
722 | ||
723 | /* | |
724 | * Free the tracing table. | |
725 | */ | |
726 | ||
727 | public trfree() | |
728 | { | |
729 | register Trinfo tp; | |
730 | ||
731 | foreach (Trinfo, tp, trinfolist) | |
732 | dispose(tp->trvalue); | |
733 | dispose(tp); | |
734 | list_delete(list_curitem(trinfolist), trinfolist); | |
735 | endfor | |
736 | } | |
737 | ||
738 | /* | |
739 | * Fix up breakpoint information before continuing execution. | |
740 | * | |
741 | * It's necessary to destroy events and breakpoints that were created | |
742 | * temporarily and still exist because the program terminated abnormally. | |
743 | */ | |
744 | ||
745 | public fixbps() | |
746 | { | |
747 | register Event e; | |
748 | register Trcmd t; | |
749 | ||
750 | single_stepping = false; | |
751 | inst_tracing = false; | |
752 | trfree(); | |
753 | foreach (Event, e, eventlist) | |
754 | if (e->temporary) { | |
755 | delevent(e->id); | |
756 | } | |
757 | endfor | |
758 | foreach (Trcmd, t, eachline) | |
759 | printrmtr(t); | |
760 | list_delete(list_curitem(eachline), eachline); | |
761 | endfor | |
762 | foreach (Trcmd, t, eachinst) | |
763 | printrmtr(t); | |
764 | list_delete(list_curitem(eachinst), eachinst); | |
765 | endfor | |
766 | } | |
767 | ||
768 | /* | |
769 | * Set all breakpoints in object code. | |
770 | */ | |
771 | ||
772 | public setallbps() | |
773 | { | |
774 | register Breakpoint p; | |
775 | ||
776 | foreach (Breakpoint, p, bplist) | |
777 | setbp(p->bpaddr); | |
778 | endfor | |
779 | } | |
780 | ||
781 | /* | |
782 | * Undo damage done by "setallbps". | |
783 | */ | |
784 | ||
785 | public unsetallbps() | |
786 | { | |
787 | register Breakpoint p; | |
788 | ||
789 | foreach (Breakpoint, p, bplist) | |
790 | unsetbp(p->bpaddr); | |
791 | endfor | |
792 | } |