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1.1 root 1: static char sccsid[] = "@(#)docomm.c 4.2 8/17/82";
2: #include <signal.h>
3: #include "head.h"
4: #include <a.out.h>
5: #include <stab.h>
6:
7: struct user u;
8: L_INT cntval;
9: INT signo;
10: INT adrflg;
11: INT pid;
12: ADDR userpc;
13: char *s;
14: enum {NOCOM, PRCOM, DSCOM, DSICOM} lastcom;
15: /* last command: nothing noteworthy, print source,
16: display variable, display instruction */
17:
18: docommand() {
19: register char *p;
20: register int i;
21: register ADDR addr, bkaddr;
22: struct proct *procp;
23: char s[4];
24:
25: cntval = 1;
26: adrflg = 0;
27: errflg = 0;
28:
29: if (scallf) {
30: doscall();
31: setcur(1);
32: lastcom = NOCOM;
33: return;
34: }
35:
36: if (reflag) { /* search for regular expression */
37: dore();
38: lastcom = PRCOM;
39: return;
40: }
41:
42: if (cmd == '\0') {
43: if (integ != 0 && var[0] != '\0') {
44: error("Invalid command (1)");
45: return;
46: }
47: if (integ != 0) { /* print line number */
48: ffind(integ);
49: fprint();
50: lastcom = PRCOM;
51: return;
52: }
53: if (var[0] != 0) {
54: printf("Unexpected null command\n");
55: return;
56: }
57: }
58:
59: switch (cmd) {
60:
61: case 'Y':
62: debug = !debug;
63: break;
64:
65: case 'V':
66: version();
67: break;
68:
69: case 'M':
70: if (args[0]) {
71: setmap(args);
72: } else {
73: printmap("? map", &txtmap);
74: printmap("/ map", &datmap);
75: }
76: break;
77:
78: case 'x':
79: printregs();
80: break;
81:
82: case 'X':
83: printpc();
84: break;
85:
86: case 'a':
87: if (integ) {
88: cpstr(args, "l\n");
89: } else if (proc[0]) {
90: cpall(args, "T\n");
91: } else {
92: error("Bad arguments");
93: break;
94: }
95: goto setbrk;
96: break;
97:
98: case 'l':
99: setcur(1);
100: lastcom = NOCOM;
101: break;
102:
103: case 'T':
104: prfrx(1);
105: lastcom = NOCOM;
106: break;
107:
108: case 't':
109: prframe();
110: lastcom = NOCOM;
111: break;
112:
113: case 'e':
114: p = args;
115: if (*p == '\0') {
116: #ifndef FLEXNAMES
117: printf("%.16s() in \"%s\"\n",
118: curproc()->pname, curfile);
119: #else
120: printf("%s() in \"%s\"\n",
121: curproc()->pname, curfile);
122: #endif
123: break;
124: }
125:
126: while (*p != '\0')
127: if (*p++ == '.') goto l1;
128: /* argument is procedure name */
129: procp = findproc(args);
130: if ((procp->pname[0] != '\0') && (procp->sfptr != badfile)) {
131: finit(adrtofilep(procp->paddr)->sfilename);
132: ffind(procp->lineno);
133: }
134: else printf("Can't find %s\n", args);
135: #ifndef FLEXNAMES
136: printf("%.16s() in \"%s\"\n", curproc()->pname, curfile);
137: #else
138: printf("%s() in \"%s\"\n", curproc()->pname, curfile);
139: #endif
140: lastcom = PRCOM;
141: break;
142:
143: l1: /* argument is filename */
144: finit(args);
145: printf("\"%s\"\n", curfile);
146: lastcom = PRCOM;
147: break;
148:
149: case 'p':
150: if (integ) ffind(integ);
151: fprint();
152: lastcom = PRCOM;
153: break;
154:
155: case 'q':
156: exit(0);
157:
158: case 'w':
159: if (integ) ffind(integ);
160: i = fline;
161: fback(WINDOW/2);
162: fprintn(WINDOW);
163: ffind(i);
164: lastcom = PRCOM;
165: break;
166:
167: case 'Q':
168: prdebug();
169: break;
170:
171: case 'z':
172: if (integ) ffind(integ);
173: fprintn(WINDOW);
174: lastcom = PRCOM;
175: break;
176:
177: case '-':
178: fback(integ ? integ : 1);
179: fpargs();
180: lastcom = PRCOM;
181: break;
182:
183: case '+':
184: fforward(integ ? integ : 1);
185: fpargs();
186: lastcom = PRCOM;
187: break;
188:
189: case '\n':
190: switch (lastcom) {
191: case PRCOM:
192: fforward(1);
193: fprint();
194: break;
195: case DSCOM:
196: oaddr += oincr ? oincr : typetosize(otype, WORDSIZE);
197: printf("0x%x/ ", oaddr);
198: dispf((ADDR) oaddr, odesc,
199: oclass == N_RSYM ? oclass : N_GSYM, otype, 0, 0, DSP);
200: break;
201: case DSICOM:
202: dot += oincr;
203: prisploc();
204: dispi(dot, odesc, N_GSYM, 0, 0);
205: break;
206: }
207: break;
208:
209: case '\004':
210: if (!isatty(0))
211: exit(0);
212: switch (lastcom) {
213: case PRCOM:
214: fforward(1);
215: printf("\b");
216: fprintn(WINDOW);
217: lastcom = PRCOM;
218: break;
219: case DSICOM:
220: printf("\b");
221: for (i=0; i<WINDOW; i++) {
222: dot += oincr;
223: prisploc();
224: if (dispi(dot, odesc, N_GSYM, 0, 0) == -1)
225: break;
226: }
227: break;
228: case DSCOM:
229: printf("\b");
230: for (i=0; i<WINDOW; i++) {
231: oaddr += oincr ?
232: oincr : typetosize(otype, WORDSIZE);
233: printf("0x%x/ ", oaddr);
234: if (dispf((ADDR) oaddr, odesc,
235: oclass == N_RSYM ? oclass :
236: N_GSYM, otype, 0, 0, DSP) == -1)
237: break;
238: }
239: break;
240: default:
241: printf("\n");
242: }
243: break;
244:
245: case 'r':
246: if (args[0] == '\0') getargs();
247: case 'R':
248: signo = 0;
249: cpstr(oldargs, args);
250: if (debug) error("calling dopcs");
251: if (integ) cntval = integ;
252: if (!executing) {
253: executing = TRUE;
254: if (integ) cntval = integ;
255: dopcs('r');
256: executing = FALSE;
257: }
258: if (debug) error("exiting dopcs");
259: bkaddr = -1;
260: goto f1;
261:
262: case 'c':
263: signo = 0;
264: case 'C':
265: if (proc[0] != '\0' || integ != 0) {
266: setdot();
267: if (dot == -1) {
268: error("Cannot set temporary breakpoint");
269: break;
270: }
271: dopcs('b');
272: bkaddr = dot;
273: } else
274: bkaddr = -1;
275: integ = atoi(args);
276:
277: f1: if (debug) error("calling dopcs");
278: if (integ) cntval = integ;
279: dopcs('c');
280: if (debug) error("exiting dopcs");
281: if (bkaddr != -1) {
282: ADDR dotsave;
283: dotsave = dot;
284: dot = bkaddr;
285: dopcs('d');
286: dot = dotsave;
287: }
288: if (!signo) printf("Breakpoint");
289: printf(" at\n");
290: setcur(1);
291: lastcom = NOCOM;
292: break;
293:
294: case 'S':
295: case 's':
296: signo = 0;
297: integ = atoi(args);
298: singstep(integ ? integ : 1, cmd);
299: if (signo) printf("\n");
300: setcur(1);
301: lastcom = NOCOM;
302: break;
303:
304: case 'g':
305: if (pid == 0 || signo) {
306: error("Not stopped at breakpoint");
307: break;
308: }
309: setdot();
310: if (dot == -1) {
311: error("Bad address");
312: break;
313: }
314: adrflg = 1;
315: integ = atoi(args);
316: if (integ) cntval = integ;
317: dopcs('c');
318: if (!signo) printf("Breakpoint");
319: printf(" at\n");
320: setcur(1);
321: lastcom = NOCOM;
322: break;
323:
324: case 'k':
325: if (scallx) {
326: userpc = dot = *(ADDR *)(((ADDR)&u)+PC) = pcs;
327: *(ADDR *)(((ADDR)&u)+FP) = fps;
328: *(ADDR *)(((ADDR)&u)+AP) = aps;
329: if (bkpts)
330: bkpts->flag = flagss;
331: scallx = 0;
332: error("Procedure killed");
333: longjmp(env, 0);
334: } else {
335: dopcs('k');
336: printf("\n");
337: lastcom = NOCOM;
338: break;
339: }
340:
341: case 'B':
342: prbkpt();
343: break;
344:
345: case 'b':
346: setbrk:
347: if (proc[0] == '\0' && integ == 0) {
348: integ = fline;
349: }
350: setdot();
351: if (dot == -1 || dot == 0) {
352: error("Cannot set breakpoint");
353: break;
354: }
355: dopcs('b');
356: s[0] = ' ';
357: s[1] = cmd;
358: s[2] = '\n';
359: s[3] = 0;
360: s[1] = cmd;
361: printbkpt(s, adrtoprocp(dot), dot);
362: break;
363:
364: case 'd':
365: if (proc[0] == '\0' && integ == 0) {
366: idbkpt();
367: break;
368: }
369: setdot();
370: if (dot == -1) {
371: error("Non existent breakpoint");
372: break;
373: }
374: dopcs('d');
375: break;
376:
377: case 'D':
378: dabkpt();
379: error("All breakpoints deleted");
380: break;
381:
382: case 'm':
383: addr = varaddr(proc[0] ? proc : curproc()->pname, var);
384: printf("stopped with value %d\n", monex(addr, 'd'));
385: setcur(1);
386: lastcom = NOCOM;
387: break;
388:
389: case '?':
390: if (!(var[0] == '.' && var[1] == '\0'))
391: setdot();
392: if (errflg) {
393: error(errflg);
394: break;
395: }
396: prisploc();
397: dispi(dot, args[0] ? args : "i", N_GSYM, 0, 0);
398: lastcom = DSICOM;
399: break;
400:
401: case '/':
402: if (var[0] == '.' && var[1] == '\0') {
403: if (integ == 0) integ = oaddr;
404: dispf((ADDR) integ, args[0] ? args : odesc,
405: oclass == N_RSYM ? oclass : N_GSYM, otype, 0, 0, DSP);
406: oaddr = integ;
407: } else
408: if (integ && (var[0] == '\0')) {
409: dispf((ADDR) integ, args, N_GSYM, 0, 0, 0, DSP);
410: oaddr = integ;
411: cpstr(odesc, args);
412: oclass = N_GSYM;
413: otype = 0;
414: } else
415: dispvar(proc, var, args);
416: lastcom = DSCOM;
417: break;
418:
419: case '=':
420: if (var[0] == '\0') {
421: if (proc[0]) {
422: addr = getaddr(proc, integ);
423: if (addr == -1) {
424: error("Unknown address");
425: break;
426: }
427: }
428: else
429: addr = integ;
430: dispf(addr, args[0] ? args : "x", 0, -1, 0, 0, DSP);
431: } else
432: findvar(proc, var, args[0] ? args : "x", 2);
433: break;
434:
435: case '!':
436: if (var[0] == '\0')
437: addr = getaddr(proc, integ);
438: else
439: addr = varaddr(proc, var);
440: if (addr == -1)
441: error("Unknown variable");
442: else {
443: if (number(args[0]) || eqany(args[0], ".-")) {
444: char *p;
445: double atof();
446: union {
447: struct{
448: int w1, w2;
449: } ww;
450: double d;
451: } dbl;
452:
453: p = (args[0] == '-') ? args+1 : args;
454: for (; *p != '.' && *p != 'e'; p++) {
455: if (!number(*p)) goto l2;
456: }
457: dbl.d = atof(args);
458: putval(addr, 'd', dbl.ww.w1);
459: if (typetodesc(sl_type,0)[0] == 'g')
460: putval(addr+WORDSIZE, 'd', dbl.ww.w2);
461: break;
462: }
463: l2: if (percentflag)
464: *(ADDR *)(((ADDR)&u)+addr) = argvalue(args);
465: else if (sl_class == N_RSYM && addr < 16)
466: putreg(addr,typetodesc(sl_type,subflag)[0],
467: argvalue(args));
468: else
469: putval(addr,typetodesc(sl_type,subflag)[0],
470: argvalue(args));
471: }
472: lastcom = NOCOM;
473: break;
474:
475: case '"':
476: printf(args);
477: break;
478: }
479: }
480:
481: fpargs() {
482: register int i;
483:
484: switch(args[0]) {
485: case 'p':
486: case '\0':
487: fprint();
488: break;
489: case 'w':
490: i = fline;
491: fback(WINDOW/2);
492: fprintn(WINDOW);
493: ffind(i);
494: break;
495: case 'z':
496: fprintn(WINDOW);
497: break;
498: }
499: }
500:
501: MSG BADTXT;
502: /* Used by a, b, c, C, d and g commands to find linenumber */
503: setdot() {
504: if (ncolonflag) {
505: dot = integ;
506: get(dot, ISP);
507: if (errflg)
508: dot = -1;
509: } else {
510: dot = getaddr(proc, integ);
511: if (dot == -1)
512: errflg = "Bad line number";
513: }
514: }
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