4.3BSD - /usr/src/ucb/pascal/utilities/pc.c

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifndef lint
   8: char copyright[] =
   9: "@(#) Copyright (c) 1980 Regents of the University of California.\n\
  10:  All rights reserved.\n";
  11: #endif not lint
  12: 
  13: #ifndef lint
  14: static char sccsid[] = "@(#)pc.c	5.1 (Berkeley) 6/5/85";
  15: #endif not lint
  16: 
  17: #include <stdio.h>
  18: #include <signal.h>
  19: #include <sys/wait.h>
  20: #include <sys/param.h>
  21: 
  22: /*
  23:  * Pc - front end for Pascal compiler.
  24:  */
  25: char    *pc0 = "/usr/lib/pc0";
  26: char    *pc1 = "/lib/f1";
  27: char    *pc2 = "/usr/lib/pc2";
  28: char    *c2 = "/lib/c2";
  29: char    *pc3 = "/usr/lib/pc3";
  30: char    *ld = "/bin/ld";
  31: char    *as = "/bin/as";
  32: char    *lpc = "-lpc";
  33: char    *crt0 = "/lib/crt0.o";
  34: char    *mcrt0 = "/lib/mcrt0.o";
  35: char    *gcrt0 = "/usr/lib/gcrt0.o";
  36: 
  37: char    *mktemp();
  38: char    *tmpdir = "/tmp";
  39: char    tmp0[MAXPATHLEN], tmp1[MAXPATHLEN];
  40: char    *tname[2];
  41: char    *tfile[2];
  42: 
  43: char    *setsuf(), *savestr();
  44: 
  45: int Jflag, Sflag, Oflag, Tlflag, cflag, gflag, pflag, wflag, tflag;
  46: int debug;
  47: 
  48: #define NARGS   512
  49: int ldargx = 3;
  50: int pc0argx = 3;
  51: char    *pc0args[NARGS] =   { "pc0", "-o", "XXX" };
  52: char    *pc1args[3] =       { "pc1", 0, };
  53: char    *pc2args[2] =       { "pc2", 0 };
  54: char    *c2args[4] =        { "c2", 0, 0, 0 };
  55: int pc3argx = 1;
  56: #define pc3args pc0args
  57: #define ldargs  pc0args
  58: /* char	*pc3args[NARGS] =	{ "pc3", 0 }; */
  59: /* char	*ldargs[NARGS] =	{ "ld", "-X", "/lib/crt0.o", 0, }; */
  60: 
  61:                 /* as -J -t tmpdir -o objfile srcfile \0 */
  62: int asargx;
  63: char    *asargs[8] =        { "as", 0, };
  64: 
  65: char *mesg[] = {
  66:     0,
  67:     "Hangup",
  68:     "Interrupt",
  69:     "Quit",
  70:     "Illegal instruction",
  71:     "Trace/BPT trap",
  72:     "IOT trap",
  73:     "EMT trap",
  74:     "Floating exception",
  75:     "Killed",
  76:     "Bus error",
  77:     "Segmentation fault",
  78:     "Bad system call",
  79:     "Broken pipe",
  80:     "Alarm clock",
  81:     "Terminated",
  82:     "Signal 16",
  83:     "Stopped (signal)",
  84:     "Stopped",
  85:     "Continued",
  86:     "Child exited",
  87:     "Stopped (tty input)",
  88:     "Stopped (tty output)",
  89:     "Tty input interrupt",
  90:     "Cputime limit exceeded",
  91:     "Filesize limit exceeded",
  92:     "Signal 26",
  93:     "Signal 27",
  94:     "Signal 28",
  95:     "Signal 29",
  96:     "Signal 30",
  97:     "Signal 31",
  98:     "Signal 32"
  99: };
 100: 
 101: /*
 102:  * If the number of .p arguments (np) is 1, and the number of .o arguments
 103:  * (nxo) is 0, and we successfully create an ``a.out'', then we remove
 104:  * the one .ps .o file (onepso).
 105:  */
 106: int np, nxo;
 107: char    *onepso;
 108: int errs;
 109: 
 110: int onintr();
 111: 
 112: main(argc, argv)
 113:     int argc;
 114:     char **argv;
 115: {
 116:     register char *argp;
 117:     register int i;
 118:     int savargx;
 119:     char *t, c;
 120:     int j;
 121: 
 122:     argc--, argv++;
 123:     if (argc == 0) {
 124:         execl("/bin/cat", "cat", "/usr/lib/how_pc");
 125:         exit(1);
 126:     }
 127:     if (signal(SIGINT, SIG_IGN) != SIG_IGN) {
 128:         signal(SIGINT, onintr);
 129:         signal(SIGTERM, onintr);
 130:     }
 131:     for (i = 0; i < argc; i++) {
 132:         argp = argv[i];
 133:         if (argp[0] != '-')
 134:             continue;
 135:         switch (argp[1]) {
 136: 
 137:         case 'd':
 138:             if (argp[2] == 0)
 139:                 debug++;
 140:             continue;
 141:         case 'i':
 142:             pc0args[pc0argx++] = "-i";
 143:             while (i+1 < argc && argv[i+1][0] != '-' &&
 144:                 getsuf(argv[i+1]) != 'p') {
 145:                 pc0args[pc0argx++] = argv[i+1];
 146:                 i++;
 147:             }
 148:             if (i+1 == argc) {
 149:                 fprintf(stderr, "pc: bad -i construction\n");
 150:                 exit(1);
 151:             }
 152:             continue;
 153:         case 'o':
 154:             i++;
 155:             if (i == argc) {
 156:                 fprintf(stderr, "pc: -o must specify file\n");
 157:                 exit(1);
 158:             }
 159:             c = getsuf(argv[i]);
 160:             if (c == 'o' || c == 'p' || c == 'c') {
 161:                 fprintf(stderr, "pc: -o would overwrite %s\n",
 162:                     argv[i]);
 163:                 exit(1);
 164:             }
 165:             continue;
 166:         case 't':
 167:             i++;
 168:             if (i == argc) {
 169:                 fprintf(stderr, "pc: -t but no directory\n");
 170:                 exit(1);
 171:             }
 172:             if (argp[2] != '\0') {
 173:                 fprintf(stderr, "pc: bad -t option\n");
 174:                 exit(1);
 175:             }
 176:             tmpdir = argv[i];
 177:             if (tmpdir[0] == '-') {
 178:                 fprintf(stderr, "pc: bad -t option\n");
 179:                 exit(1);
 180:             }
 181:             tflag = 1;
 182:             continue;
 183:         case 'O':
 184:             Oflag = 1;
 185:             continue;
 186:         case 'S':
 187:             Sflag = 1;
 188:             continue;
 189:         case 'J':
 190:             Jflag = 1;
 191:             continue;
 192:         case 'T':
 193:             switch (argp[2]) {
 194: 
 195:             case '0':
 196:                 pc0 = "/usr/src/ucb/pascal/pc0/a.out";
 197:                 if (argp[3] != '\0') {
 198:                     pc0 = &argp[3];
 199:                 }
 200:                 continue;
 201:             case '1':
 202:                 pc1 = "/usr/src/lib/pcc/fort";
 203:                 if (argp[3] != '\0') {
 204:                     pc1 = &argp[3];
 205:                 }
 206:                 continue;
 207:             case '2':
 208:                 pc2 = "/usr/src/ucb/pascal/utilities/pc2";
 209:                 if (argp[3] != '\0') {
 210:                     pc2 = &argp[3];
 211:                 }
 212:                 continue;
 213:             case '3':
 214:                 pc3 = "/usr/src/ucb/pascal/utilities/pc3";
 215:                 if (argp[3] != '\0') {
 216:                     pc3 = &argp[3];
 217:                 }
 218:                 continue;
 219:             case 'l':
 220:                 Tlflag = 1;
 221:                 lpc = "/usr/src/usr.lib/libpc/libpc";
 222:                 if (argp[3] != '\0') {
 223:                     lpc = &argp[3];
 224:                 }
 225:                 continue;
 226:             }
 227:             continue;
 228:         case 'c':
 229:             cflag = 1;
 230:             continue;
 231:         case 'l':
 232:             if (argp[2])
 233:                 continue;
 234:             /* fall into ... */
 235:         case 'b':
 236:         case 's':
 237:         case 'z':
 238:         case 'C':
 239:             pc0args[pc0argx++] = argp;
 240:             continue;
 241:         case 'w':
 242:             wflag = 1;
 243:             pc0args[pc0argx++] = argp;
 244:             continue;
 245:         case 'g':
 246:             gflag = 1;
 247:             pc0args[pc0argx++] = argp;
 248:             continue;
 249:         case 'p':
 250:             if (argp[2] == 'g')
 251:                 crt0 = gcrt0;
 252:             else
 253:                 crt0 = mcrt0;
 254:             if (!Tlflag)
 255:                 lpc = "-lpc_p";
 256:             pflag = 1;
 257:             continue;
 258:         }
 259:     }
 260:     if (gflag && Oflag) {
 261:         fprintf(stderr, "pc: warning: -g overrides -O\n");
 262:         Oflag = 0;
 263:     }
 264:     sprintf(tmp0, "%s/%s", tmpdir, "p0XXXXXX");
 265:     tname[0] = mktemp(tmp0);
 266:     sprintf(tmp1, "%s/%s", tmpdir, "p1XXXXXX");
 267:     tname[1] = mktemp(tmp1);
 268:     savargx = pc0argx;
 269:     for (i = 0; i < argc; i++) {
 270:         argp = argv[i];
 271:         if (argp[0] == '-')
 272:             continue;
 273:         if (suffix(argp) == 's') {
 274:             asargx = 1;
 275:             if (Jflag)
 276:                 asargs[asargx++] = "-J";
 277: #			ifdef vax
 278:                 if (tflag) {
 279:                     asargs[asargx++] = "-t";
 280:                     asargs[asargx++] = tmpdir;
 281:                 }
 282: #			endif vax
 283:             asargs[asargx++] = argp;
 284:             asargs[asargx++] = "-o";
 285:             tfile[1] = setsuf(argp, 'o');
 286:             asargs[asargx++] = tfile[1];
 287:             asargs[asargx] = 0;
 288:             if (dosys(as, asargs, 0, 0))
 289:                 continue;
 290:             tfile[1] = 0;
 291:             continue;
 292:         }
 293:         if (suffix(argp) != 'p')
 294:             continue;
 295:         tfile[0] = tname[0];
 296:         pc0args[2] = tfile[0];
 297:         pc0argx = savargx;
 298:         if (pflag)
 299:             pc0args[pc0argx++] = "-p";
 300:         if (Jflag)
 301:             pc0args[pc0argx++] = "-J";
 302:         pc0args[pc0argx++] = argp;
 303:         pc0args[pc0argx] = 0;
 304:         if (dosys(pc0, pc0args, 0, 0))
 305:             continue;
 306:         pc1args[1] = tfile[0];
 307:         tfile[1] = tname[1];
 308:         if (dosys(pc1, pc1args, 0, tfile[1]))
 309:             continue;
 310:         unlink(tfile[0]);
 311:         tfile[0] = tname[0];
 312:         if (Oflag) {
 313:             if (dosys(c2, c2args, tfile[1], tfile[0]))
 314:                 continue;
 315:             unlink(tfile[1]);
 316:             tfile[1] = tfile[0];
 317:             tfile[0] = tname[1];
 318:         }
 319:         if (Sflag)
 320:             tfile[0] = setsuf(argp, 's');
 321:         if (dosys(pc2, pc2args, tfile[1], tfile[0]))
 322:             continue;
 323:         unlink(tfile[1]);
 324:         tfile[1] = 0;
 325:         if (Sflag) {
 326:             tfile[0] = 0;
 327:             continue;
 328:         }
 329:         asargx = 1;
 330:         if (Jflag)
 331:             asargs[asargx++] = "-J";
 332: #		ifdef vax
 333:             if (tflag) {
 334:                 asargs[asargx++] = "-t";
 335:                 asargs[asargx++] = tmpdir;
 336:             }
 337: #		endif vax
 338:         asargs[asargx++] = tfile[0];
 339:         asargs[asargx++] = "-o";
 340:         tfile[1] = setsuf(argp, 'o');
 341:         asargs[asargx++] = tfile[1];
 342:         asargs[asargx] = 0;
 343:         if (dosys(as, asargs, 0, 0))
 344:             continue;
 345:         tfile[1] = 0;
 346:         remove();
 347:     }
 348:     if (errs || cflag || Sflag)
 349:         done();
 350: /* char	*pc3args[NARGS] =	{ "pc3", 0 }; */
 351:     pc3args[0] = "pc3";
 352:     if (wflag)
 353:         pc3args[pc3argx++] = "-w";
 354:     pc3args[pc3argx++] = "/usr/lib/pcexterns.o";
 355:     for (i = 0; i < argc; i++) {
 356:         argp = argv[i];
 357:         if (!strcmp(argp, "-o"))
 358:             i++;
 359:         if (argp[0] == '-')
 360:             continue;
 361:         switch (getsuf(argp)) {
 362: 
 363:         case 'o':
 364:             pc3args[pc3argx++] = argp;
 365:             nxo++;
 366:             continue;
 367:         case 's':
 368:         case 'p':
 369:             onepso = pc3args[pc3argx++] =
 370:                 savestr(setsuf(argp, 'o'));
 371:             np++;
 372:             continue;
 373:         }
 374:     }
 375:     pc3args[pc3argx] = 0;
 376:     if (dosys(pc3, pc3args, 0, 0) > 1)
 377:         done();
 378:     errs = 0;
 379: /* char	*ldargs[NARGS] =	{ "ld", "-X", "/lib/crt0.o", 0, }; */
 380:     ldargs[0] = "ld";
 381:     ldargs[1] = "-X";
 382:     ldargs[2] = crt0;
 383:     for (i = 0; i < argc; i++) {
 384:         argp = argv[i];
 385:         if (argp[0] != '-') {
 386:             switch (getsuf(argp)) {
 387: 
 388:             case 'p':
 389:             case 's':
 390:                 ldargs[ldargx] = savestr(setsuf(argp, 'o'));
 391:                 break;
 392:             default:
 393:                 ldargs[ldargx] = argp;
 394:                 break;
 395:             }
 396:             if (getsuf(ldargs[ldargx]) == 'o')
 397:             for (j = 0; j < ldargx; j++)
 398:                 if (!strcmp(ldargs[j], ldargs[ldargx]))
 399:                     goto duplicate;
 400:             ldargx++;
 401: duplicate:
 402:             continue;
 403:         }
 404:         switch (argp[1]) {
 405: 
 406:         case 'i':
 407:             while (i+1 < argc && argv[i+1][0] != '-' &&
 408:                 getsuf(argv[i+1]) != 'p')
 409:                 i++;
 410:             continue;
 411:         case 'd':
 412:             if (argp[2] == 0)
 413:                 continue;
 414:             ldargs[ldargx++] = argp;
 415:             continue;
 416:         case 'o':
 417:             ldargs[ldargx++] = argp;
 418:             i++;
 419:             ldargs[ldargx++] = argv[i];
 420:             continue;
 421:         case 'l':
 422:             if (argp[2])
 423:                 ldargs[ldargx++] = argp;
 424:             continue;
 425:         case 't':
 426:             i++;
 427:             continue;
 428:         case 'c':
 429:         case 'g':
 430:         case 'w':
 431:         case 'p':
 432:         case 'S':
 433:         case 'J':
 434:         case 'T':
 435:         case 'O':
 436:         case 'C':
 437:         case 'b':
 438:         case 's':
 439:         case 'z':
 440:             continue;
 441:         default:
 442:             ldargs[ldargx++] = argp;
 443:             continue;
 444:         }
 445:     }
 446:     ldargs[ldargx++] = lpc;
 447:     if (gflag)
 448:         ldargs[ldargx++] = "-lg";
 449:     if (pflag) {
 450:         ldargs[ldargx++] = "-lm_p";
 451:         ldargs[ldargx++] = "-lc_p";
 452:     } else {
 453:         ldargs[ldargx++] = "-lm";
 454:         ldargs[ldargx++] = "-lc";
 455:     }
 456:     ldargs[ldargx] = 0;
 457:     if (dosys(ld, ldargs, 0, 0)==0 && np == 1 && nxo == 0)
 458:         unlink(onepso);
 459:     done();
 460: }
 461: 
 462: dosys(cmd, argv, in, out)
 463:     char *cmd, **argv, *in, *out;
 464: {
 465:     union wait status;
 466:     int pid;
 467: 
 468:     if (debug) {
 469:         int i;
 470:         printf("%s:", cmd);
 471:         for (i = 0; argv[i]; i++)
 472:             printf(" %s", argv[i]);
 473:         if (in)
 474:             printf(" <%s", in);
 475:         if (out)
 476:             printf(" >%s", out);
 477:         printf("\n");
 478:     }
 479:     /*
 480: 	 * warning: vfork doesn't work here, because the call to signal()
 481: 	 * done by the child process destroys the parent's SIGINT handler.
 482: 	 */
 483:     pid = fork();
 484:     if (pid < 0) {
 485:         fprintf(stderr, "pc: No more processes\n");
 486:         done();
 487:     }
 488:     if (pid == 0) {
 489:         if (in) {
 490:             close(0);
 491:             if (open(in, 0) != 0) {
 492:                 perror(in);
 493:                 exit(1);
 494:             }
 495:         }
 496:         if (out) {
 497:             close(1);
 498:             unlink(out);
 499:             if (creat(out, 0666) != 1) {
 500:                 perror(out);
 501:                 exit(1);
 502:             }
 503:         }
 504:         signal(SIGINT, SIG_DFL);
 505:         execv(cmd, argv);
 506:         perror(cmd);
 507:         exit(1);
 508:     }
 509:     while (wait(&status) != pid)
 510:         ;
 511:     if (WIFSIGNALED(status)) {
 512:         if (status.w_termsig != SIGINT) {
 513:             fprintf(stderr, "%s: %s", cmd, mesg[status.w_termsig]);
 514:             if (status.w_coredump)
 515:                 fprintf(stderr, " (core dumped)");
 516:             fprintf(stderr, "\n");
 517:         }
 518:         errs = 100;
 519:         done();
 520:         /*NOTREACHED*/
 521:     }
 522:     if (status.w_retcode) {
 523:         errs = 1;
 524:         remove();
 525:     }
 526:     return (status.w_retcode);
 527: }
 528: 
 529: done()
 530: {
 531: 
 532:     remove();
 533:     exit(errs);
 534: }
 535: 
 536: remove()
 537: {
 538: 
 539:     if (tfile[0])
 540:         unlink(tfile[0]);
 541:     if (tfile[1])
 542:         unlink(tfile[1]);
 543: }
 544: 
 545: onintr()
 546: {
 547: 
 548:     errs = 1;
 549:     done();
 550: }
 551: 
 552: getsuf(cp)
 553:     char *cp;
 554: {
 555: 
 556:     if (*cp == 0)
 557:         return;
 558:     while (cp[1])
 559:         cp++;
 560:     if (cp[-1] != '.')
 561:         return (0);
 562:     return (*cp);
 563: }
 564: 
 565: char *
 566: setsuf(as, ch)
 567:     char *as;
 568: {
 569:     register char *s, *s1;
 570: 
 571:     s = s1 = savestr(as);
 572:     while (*s)
 573:         if (*s++ == '/')
 574:             s1 = s;
 575:     s[-1] = ch;
 576:     return (s1);
 577: }
 578: 
 579: #define NSAVETAB    512
 580: char    *savetab;
 581: int saveleft;
 582: 
 583: char *
 584: savestr(cp)
 585:     register char *cp;
 586: {
 587:     register int len;
 588: 
 589:     len = strlen(cp) + 1;
 590:     if (len > saveleft) {
 591:         saveleft = NSAVETAB;
 592:         if (len > saveleft)
 593:             saveleft = len;
 594:         savetab = (char *)malloc(saveleft);
 595:         if (savetab == 0) {
 596:             fprintf(stderr, "ran out of memory (savestr)\n");
 597:             exit(1);
 598:         }
 599:     }
 600:     strncpy(savetab, cp, len);
 601:     cp = savetab;
 602:     savetab += len;
 603:     return (cp);
 604: }
 605: 
 606: suffix(cp)
 607:     char *cp;
 608: {
 609: 
 610:     if (cp[0] == 0 || cp[1] == 0)
 611:         return (0);
 612:     while (cp[1])
 613:         cp++;
 614:     if (cp[-1] == '.')
 615:         return (*cp);
 616:     return (0);
 617: }

Defined functions

Defined variables

Defined macros