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