| 1 | static char sccsid[] = "@(#)docomm.c 4.1 %G%"; |
| 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 | } |