1 static char sccsid[] = "@(#)pc.c 3.13 11/23/81"; 2 3 #include <stdio.h> 4 #include <signal.h> 5 #include <wait.h> 6 7 /* 8 * Pc - front end for Pascal compiler. 9 */ 10 char *pc0 = "/usr/lib/pc0"; 11 char *pc1 = "/lib/f1"; 12 char *pc2 = "/usr/lib/pc2"; 13 char *c2 = "/lib/c2"; 14 char *pc3 = "/usr/lib/pc3"; 15 char *ld = "/bin/ld"; 16 char *as = "/bin/as"; 17 char *lpc = "-lpc"; 18 char *crt0 = "/lib/crt0.o"; 19 char *mcrt0 = "/lib/mcrt0.o"; 20 char *gcrt0 = "/usr/lib/gcrt0.o"; 21 22 char *mktemp(); 23 char *tname[2]; 24 char *tfile[2]; 25 26 char *setsuf(), *savestr(); 27 28 int Jflag, Sflag, Oflag, Tlflag, cflag, gflag, pflag; 29 int debug; 30 31 #define NARGS 512 32 int ldargx = 3; 33 int pc0argx = 3; 34 char *pc0args[NARGS] = { "pc0", "-o", "XXX" }; 35 char *pc1args[3] = { "pc1", 0, }; 36 char *pc2args[2] = { "pc2", 0 }; 37 char *c2args[4] = { "c2", 0, 0, 0 }; 38 int pc3argx = 1; 39 #define pc3args pc0args 40 #define ldargs pc0args 41 /* char *pc3args[NARGS] = { "pc3", 0 }; */ 42 /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */ 43 int asargx; 44 char *asargs[6] = { "as", 0, }; 45 46 /* 47 * If the number of .p arguments (np) is 1, and the number of .o arguments 48 * (nxo) is 0, and we successfully create an ``a.out'', then we remove 49 * the one .ps .o file (onepso). 50 */ 51 int np, nxo; 52 char *onepso; 53 int errs; 54 55 int onintr(); 56 57 main(argc, argv) 58 int argc; 59 char **argv; 60 { 61 register char *argp; 62 register int i; 63 int savargx; 64 char *t, c; 65 int j; 66 67 argc--, argv++; 68 if (argc == 0) { 69 execl("/bin/cat", "cat", "/usr/lib/how_pc"); 70 exit(1); 71 } 72 if (signal(SIGINT, SIG_IGN) != SIG_IGN) { 73 signal(SIGINT, onintr); 74 signal(SIGTERM, onintr); 75 } 76 for (i = 0; i < argc; i++) { 77 argp = argv[i]; 78 if (argp[0] != '-') 79 continue; 80 switch (argp[1]) { 81 82 case 'd': 83 if (argp[2] == 0) 84 debug++; 85 continue; 86 case 'i': 87 pc0args[pc0argx++] = "-i"; 88 while (i+1 < argc && argv[i+1][0] != '-' && 89 getsuf(argv[i+1]) != 'p') { 90 pc0args[pc0argx++] = argv[i+1]; 91 i++; 92 } 93 if (i+1 == argc) { 94 fprintf(stderr, "pc: bad -i construction\n"); 95 exit(1); 96 } 97 continue; 98 case 'o': 99 i++; 100 if (i == argc) { 101 fprintf(stderr, "pc: -o must specify file\n"); 102 exit(1); 103 } 104 c = getsuf(argv[i]); 105 if (c == 'o' || c == 'p' || c == 'c') { 106 fprintf(stderr, "pc: -o would overwrite %s\n", 107 argv[i]); 108 exit(1); 109 } 110 continue; 111 case 'O': 112 Oflag = 1; 113 continue; 114 case 'S': 115 Sflag = 1; 116 continue; 117 case 'J': 118 Jflag = 1; 119 continue; 120 case 'T': 121 switch (argp[2]) { 122 123 case '0': 124 pc0 = "/usr/src/cmd/pc0/a.out"; 125 if (argp[3] != '\0') { 126 pc0 = &argp[3]; 127 } 128 continue; 129 case '1': 130 pc1 = "/usr/src/cmd/pcc/pc1"; 131 if (argp[3] != '\0') { 132 pc1 = &argp[3]; 133 } 134 continue; 135 case '2': 136 pc2 = "/usr/src/cmd/pascal/pc2"; 137 if (argp[3] != '\0') { 138 pc2 = &argp[3]; 139 } 140 continue; 141 case '3': 142 pc3 = "/usr/src/cmd/pascal/pc3"; 143 if (argp[3] != '\0') { 144 pc3 = &argp[3]; 145 } 146 continue; 147 case 'l': 148 Tlflag = 1; 149 lpc = "/usr/src/lib/libpc/libpc"; 150 if (argp[3] != '\0') { 151 lpc = &argp[3]; 152 } 153 continue; 154 } 155 continue; 156 case 'c': 157 cflag = 1; 158 continue; 159 case 'l': 160 if (argp[2]) 161 continue; 162 /* fall into ... */ 163 case 'b': 164 case 'g': 165 case 's': 166 case 'w': 167 case 'z': 168 case 'C': 169 pc0args[pc0argx++] = argp; 170 if (argp[1] == 'g') 171 gflag = 1; 172 continue; 173 case 't': 174 fprintf(stderr, "pc: -t is default; -C for checking\n"); 175 continue; 176 case 'p': 177 if (argp[2] == 'g') 178 crt0 = gcrt0; 179 else 180 crt0 = mcrt0; 181 if (!Tlflag) 182 lpc = "-lpc_p"; 183 pflag = 1; 184 continue; 185 } 186 } 187 if (gflag && Oflag) { 188 fprintf(stderr, "pc: warning: -g overrides -O\n"); 189 Oflag = 0; 190 } 191 tname[0] = mktemp("/tmp/p0XXXXXX"); 192 tname[1] = mktemp("/tmp/p1XXXXXX"); 193 savargx = pc0argx; 194 for (i = 0; i < argc; i++) { 195 argp = argv[i]; 196 if (argp[0] == '-') 197 continue; 198 if (suffix(argp) == 's') { 199 asargx = 1; 200 if (Jflag) 201 asargs[asargx++] = "-J"; 202 asargs[asargx++] = argp; 203 asargs[asargx++] = "-o"; 204 tfile[1] = setsuf(argp, 'o'); 205 asargs[asargx++] = tfile[1]; 206 asargs[asargx] = 0; 207 if (dosys(as, asargs, 0, 0)) 208 continue; 209 tfile[1] = 0; 210 continue; 211 } 212 if (suffix(argp) != 'p') 213 continue; 214 tfile[0] = tname[0]; 215 pc0args[2] = tfile[0]; 216 pc0argx = savargx; 217 if (pflag) 218 pc0args[pc0argx++] = "-p"; 219 pc0args[pc0argx++] = argp; 220 pc0args[pc0argx] = 0; 221 if (dosys(pc0, pc0args, 0, 0)) 222 continue; 223 pc1args[1] = tfile[0]; 224 tfile[1] = tname[1]; 225 if (dosys(pc1, pc1args, 0, tfile[1])) 226 continue; 227 unlink(tfile[0]); 228 tfile[0] = tname[0]; 229 if (Oflag) { 230 if (dosys(c2, c2args, tfile[1], tfile[0])) 231 continue; 232 unlink(tfile[1]); 233 tfile[1] = tfile[0]; 234 tfile[0] = tname[1]; 235 } 236 if (Sflag) 237 tfile[0] = setsuf(argp, 's'); 238 if (dosys(pc2, pc2args, tfile[1], tfile[0])) 239 continue; 240 unlink(tfile[1]); 241 tfile[1] = 0; 242 if (Sflag) { 243 tfile[0] = 0; 244 continue; 245 } 246 asargx = 1; 247 if (Jflag) 248 asargs[asargx++] = "-J"; 249 asargs[asargx++] = tfile[0]; 250 asargs[asargx++] = "-o"; 251 tfile[1] = setsuf(argp, 'o'); 252 asargs[asargx++] = tfile[1]; 253 asargs[asargx] = 0; 254 if (dosys(as, asargs, 0, 0)) 255 continue; 256 tfile[1] = 0; 257 remove(); 258 } 259 if (errs || cflag || Sflag) 260 done(); 261 /* char *pc3args[NARGS] = { "pc3", 0 }; */ 262 pc3args[0] = "pc3"; 263 for (i = 0; i < argc; i++) { 264 argp = argv[i]; 265 if (!strcmp(argp, "-o")) 266 i++; 267 if (argp[0] == '-') 268 continue; 269 switch (getsuf(argp)) { 270 271 case 'o': 272 pc3args[pc3argx++] = argp; 273 nxo++; 274 continue; 275 case 's': 276 case 'p': 277 onepso = pc3args[pc3argx++] = 278 savestr(setsuf(argp, 'o')); 279 np++; 280 continue; 281 } 282 } 283 pc3args[pc3argx] = 0; 284 if (dosys(pc3, pc3args, 0, 0)) 285 done(); 286 /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */ 287 ldargs[0] = "ld"; 288 ldargs[1] = "-X"; 289 ldargs[2] = crt0; 290 for (i = 0; i < argc; i++) { 291 argp = argv[i]; 292 if (argp[0] != '-') { 293 switch (getsuf(argp)) { 294 295 case 'p': 296 case 's': 297 ldargs[ldargx] = savestr(setsuf(argp, 'o')); 298 break; 299 default: 300 ldargs[ldargx] = argp; 301 break; 302 } 303 if (getsuf(ldargs[ldargx]) == 'o') 304 for (j = 0; j < ldargx; j++) 305 if (!strcmp(ldargs[j], ldargs[ldargx])) 306 goto duplicate; 307 ldargx++; 308 duplicate: 309 continue; 310 } 311 switch (argp[1]) { 312 313 case 'i': 314 while (i+1 < argc && argv[i+1][0] != '-' && 315 getsuf(argv[i+1]) != 'p') 316 i++; 317 continue; 318 case 'd': 319 if (argp[2] == 0) 320 continue; 321 ldargs[ldargx++] = argp; 322 continue; 323 case 'o': 324 ldargs[ldargx++] = argp; 325 i++; 326 ldargs[ldargx++] = argv[i]; 327 continue; 328 case 'l': 329 if (argp[2]) 330 ldargs[ldargx++] = argp; 331 continue; 332 case 'c': 333 case 'g': 334 case 'w': 335 case 'p': 336 case 'S': 337 case 'J': 338 case 'T': 339 case 'O': 340 case 'C': 341 case 'b': 342 case 's': 343 case 'z': 344 continue; 345 default: 346 ldargs[ldargx++] = argp; 347 continue; 348 } 349 } 350 ldargs[ldargx++] = lpc; 351 if (gflag) 352 ldargs[ldargx++] = "-lg"; 353 if (pflag) { 354 ldargs[ldargx++] = "-lm_p"; 355 ldargs[ldargx++] = "-lc_p"; 356 } else { 357 ldargs[ldargx++] = "-lm"; 358 ldargs[ldargx++] = "-lc"; 359 } 360 ldargs[ldargx] = 0; 361 if (dosys(ld, ldargs, 0, 0)==0 && np == 1 && nxo == 0) 362 unlink(onepso); 363 done(); 364 } 365 366 dosys(cmd, argv, in, out) 367 char *cmd, **argv, *in, *out; 368 { 369 union wait status; 370 int pid; 371 372 if (debug) { 373 int i; 374 printf("%s:", cmd); 375 for (i = 0; argv[i]; i++) 376 printf(" %s", argv[i]); 377 if (in) 378 printf(" <%s", in); 379 if (out) 380 printf(" >%s", out); 381 printf("\n"); 382 } 383 pid = vfork(); 384 if (pid < 0) { 385 fprintf(stderr, "pc: No more processes\n"); 386 done(); 387 } 388 if (pid == 0) { 389 if (in) { 390 close(0); 391 if (open(in, 0) != 0) { 392 perror(in); 393 exit(1); 394 } 395 } 396 if (out) { 397 close(1); 398 unlink(out); 399 if (creat(out, 0666) != 1) { 400 perror(out); 401 exit(1); 402 } 403 } 404 signal(SIGINT, SIG_DFL); 405 execv(cmd, argv); 406 perror(cmd); 407 exit(1); 408 } 409 while (wait(&status) != pid) 410 ; 411 if (WIFSIGNALED(status)) { 412 if (status.w_termsig != SIGINT) 413 fprintf(stderr, "Fatal error in %s\n", cmd); 414 errs = 100; 415 done(); 416 /*NOTREACHED*/ 417 } 418 if (status.w_retcode) { 419 errs = 1; 420 remove(); 421 } 422 return (status.w_retcode); 423 } 424 425 done() 426 { 427 428 remove(); 429 exit(errs); 430 } 431 432 remove() 433 { 434 435 if (tfile[0]) 436 unlink(tfile[0]); 437 if (tfile[1]) 438 unlink(tfile[1]); 439 } 440 441 onintr() 442 { 443 444 errs = 1; 445 done(); 446 } 447 448 getsuf(cp) 449 char *cp; 450 { 451 452 if (*cp == 0) 453 return; 454 while (cp[1]) 455 cp++; 456 if (cp[-1] != '.') 457 return (0); 458 return (*cp); 459 } 460 461 char * 462 setsuf(as, ch) 463 char *as; 464 { 465 register char *s, *s1; 466 467 s = s1 = savestr(as); 468 while (*s) 469 if (*s++ == '/') 470 s1 = s; 471 s[-1] = ch; 472 return (s1); 473 } 474 475 #define NSAVETAB 512 476 char *savetab; 477 int saveleft; 478 479 char * 480 savestr(cp) 481 register char *cp; 482 { 483 register int len; 484 485 len = strlen(cp) + 1; 486 if (len > saveleft) { 487 saveleft = NSAVETAB; 488 if (len > saveleft) 489 saveleft = len; 490 savetab = (char *)malloc(saveleft); 491 if (savetab == 0) { 492 fprintf(stderr, "ran out of memory (savestr)\n"); 493 exit(1); 494 } 495 } 496 strncpy(savetab, cp, len); 497 cp = savetab; 498 savetab += len; 499 return (cp); 500 } 501 502 suffix(cp) 503 char *cp; 504 { 505 506 if (cp[0] == 0 || cp[1] == 0) 507 return (0); 508 while (cp[1]) 509 cp++; 510 if (cp[-1] == '.') 511 return (*cp); 512 return (0); 513 } 514