1 static char sccsid[] = "@(#)pc.c 3.11 02/04/81"; 2 #include <stdio.h> 3 #include <signal.h> 4 #include <wait.h> 5 6 /* 7 * Pc - front end for Pascal compiler. 8 */ 9 char *pc0 = "/usr/lib/pc0"; 10 char *pc1 = "/lib/f1"; 11 char *pc2 = "/usr/lib/pc2"; 12 char *c2 = "/lib/c2"; 13 char *pc3 = "/usr/lib/pc3"; 14 char *ld = "/bin/ld"; 15 char *as = "/bin/as"; 16 char *lpc = "-lpc"; 17 char *crt0 = "/lib/crt0.o"; 18 char *mcrt0 = "/lib/mcrt0.o"; 19 20 char *mktemp(); 21 char *tname[2]; 22 char *tfile[2]; 23 24 char *setsuf(), *savestr(); 25 26 int Jflag, Sflag, Oflag, cflag, gflag, pflag; 27 int debug; 28 29 #define NARGS 512 30 int ldargx = 3; 31 int pc0argx = 3; 32 char *pc0args[NARGS] = { "pc0", "-o", "XXX" }; 33 char *pc1args[3] = { "pc1", 0, }; 34 char *pc2args[2] = { "pc2", 0 }; 35 char *c2args[4] = { "c2", 0, 0, 0 }; 36 int pc3argx = 1; 37 #define pc3args pc0args 38 #define ldargs pc0args 39 /* char *pc3args[NARGS] = { "pc3", 0 }; */ 40 /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */ 41 int asargx; 42 char *asargs[6] = { "as", 0, }; 43 44 /* 45 * If the number of .p arguments (np) is 1, and the number of .o arguments 46 * (nxo) is 0, and we successfully create an ``a.out'', then we remove 47 * the one .ps .o file (onepso). 48 */ 49 int np, nxo; 50 char *onepso; 51 int errs; 52 53 int onintr(); 54 55 main(argc, argv) 56 int argc; 57 char **argv; 58 { 59 register char *argp; 60 register int i; 61 int savargx; 62 char *t, c; 63 int j; 64 65 argc--, argv++; 66 if (argc == 0) { 67 execl("/bin/cat", "cat", "/usr/lib/how_pc"); 68 exit(1); 69 } 70 if (signal(SIGINT, SIG_IGN) != SIG_IGN) { 71 signal(SIGINT, onintr); 72 signal(SIGTERM, onintr); 73 } 74 for (i = 0; i < argc; i++) { 75 argp = argv[i]; 76 if (argp[0] != '-') 77 continue; 78 switch (argp[1]) { 79 80 case 'd': 81 if (argp[2] == 0) 82 debug++; 83 continue; 84 case 'i': 85 pc0args[pc0argx++] = "-i"; 86 while (i+1 < argc && argv[i+1][0] != '-' && 87 getsuf(argv[i+1]) != 'p') { 88 pc0args[pc0argx++] = argv[i+1]; 89 i++; 90 } 91 if (i+1 == argc) { 92 fprintf(stderr, "pc: bad -i construction\n"); 93 exit(1); 94 } 95 continue; 96 case 'o': 97 i++; 98 if (i == argc) { 99 fprintf(stderr, "pc: -o must specify file\n"); 100 exit(1); 101 } 102 c = getsuf(argv[i]); 103 if (c == 'o' || c == 'p' || c == 'c') { 104 fprintf(stderr, "pc: -o would overwrite %s\n", 105 argv[i]); 106 exit(1); 107 } 108 continue; 109 case 'O': 110 Oflag = 1; 111 continue; 112 case 'S': 113 Sflag = 1; 114 continue; 115 case 'J': 116 Jflag = 1; 117 continue; 118 case 'T': 119 switch (argp[2]) { 120 121 case '0': 122 pc0 = "/usr/src/cmd/pc0/a.out"; 123 continue; 124 case '1': 125 pc1 = "/usr/src/cmd/pcc/pc1"; 126 continue; 127 case '2': 128 pc2 = "/usr/src/cmd/pascal/pc2"; 129 continue; 130 case '3': 131 pc3 = "/usr/src/cmd/pascal/pc3"; 132 continue; 133 case 'l': 134 lpc = "/usr/src/lib/libpc/libpc"; 135 continue; 136 } 137 continue; 138 case 'c': 139 cflag = 1; 140 continue; 141 case 'l': 142 if (argp[2]) 143 continue; 144 /* fall into ... */ 145 case 'b': 146 case 'g': 147 case 's': 148 case 'w': 149 case 'z': 150 case 'C': 151 pc0args[pc0argx++] = argp; 152 if (argp[1] == 'g') 153 gflag = 1; 154 continue; 155 case 't': 156 fprintf(stderr, "pc: -t is default; -C for checking\n"); 157 continue; 158 case 'p': 159 crt0 = mcrt0; 160 pflag++; 161 continue; 162 } 163 } 164 if (gflag && Oflag) { 165 fprintf(stderr, "pc: warning: -g overrides -O\n"); 166 Oflag = 0; 167 } 168 tname[0] = mktemp("/tmp/p0XXXXXX"); 169 tname[1] = mktemp("/tmp/p1XXXXXX"); 170 savargx = pc0argx; 171 for (i = 0; i < argc; i++) { 172 argp = argv[i]; 173 if (argp[0] == '-') 174 continue; 175 if (suffix(argp) == 's') { 176 asargx = 1; 177 if (Jflag) 178 asargs[asargx++] = "-J"; 179 asargs[asargx++] = argp; 180 asargs[asargx++] = "-o"; 181 tfile[1] = setsuf(argp, 'o'); 182 asargs[asargx++] = tfile[1]; 183 asargs[asargx] = 0; 184 if (dosys(as, asargs, 0, 0)) 185 continue; 186 tfile[1] = 0; 187 continue; 188 } 189 if (suffix(argp) != 'p') 190 continue; 191 tfile[0] = tname[0]; 192 pc0args[2] = tfile[0]; 193 pc0argx = savargx; 194 if (pflag) 195 pc0args[pc0argx++] = "-p"; 196 pc0args[pc0argx++] = argp; 197 pc0args[pc0argx] = 0; 198 if (dosys(pc0, pc0args, 0, 0)) 199 continue; 200 pc1args[1] = tfile[0]; 201 tfile[1] = tname[1]; 202 if (dosys(pc1, pc1args, 0, tfile[1])) 203 continue; 204 unlink(tfile[0]); 205 tfile[0] = tname[0]; 206 if (Oflag) { 207 if (dosys(c2, c2args, tfile[1], tfile[0])) 208 continue; 209 unlink(tfile[1]); 210 tfile[1] = tfile[0]; 211 tfile[0] = tname[1]; 212 } 213 if (Sflag) 214 tfile[0] = setsuf(argp, 's'); 215 if (dosys(pc2, pc2args, tfile[1], tfile[0])) 216 continue; 217 unlink(tfile[1]); 218 tfile[1] = 0; 219 if (Sflag) { 220 tfile[0] = 0; 221 continue; 222 } 223 asargx = 1; 224 if (Jflag) 225 asargs[asargx++] = "-J"; 226 asargs[asargx++] = tfile[0]; 227 asargs[asargx++] = "-o"; 228 tfile[1] = setsuf(argp, 'o'); 229 asargs[asargx++] = tfile[1]; 230 asargs[asargx] = 0; 231 if (dosys(as, asargs, 0, 0)) 232 continue; 233 tfile[1] = 0; 234 remove(); 235 } 236 if (errs || cflag || Sflag) 237 done(); 238 /* char *pc3args[NARGS] = { "pc3", 0 }; */ 239 pc3args[0] = "pc3"; 240 for (i = 0; i < argc; i++) { 241 argp = argv[i]; 242 if (!strcmp(argp, "-o")) 243 i++; 244 if (argp[0] == '-') 245 continue; 246 switch (getsuf(argp)) { 247 248 case 'o': 249 pc3args[pc3argx++] = argp; 250 nxo++; 251 continue; 252 case 's': 253 case 'p': 254 onepso = pc3args[pc3argx++] = 255 savestr(setsuf(argp, 'o')); 256 np++; 257 continue; 258 } 259 } 260 pc3args[pc3argx] = 0; 261 if (dosys(pc3, pc3args, 0, 0)) 262 done(); 263 /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */ 264 ldargs[0] = "ld"; 265 ldargs[1] = "-X"; 266 ldargs[2] = crt0; 267 for (i = 0; i < argc; i++) { 268 argp = argv[i]; 269 if (argp[0] != '-') { 270 switch (getsuf(argp)) { 271 272 case 'p': 273 case 's': 274 ldargs[ldargx] = savestr(setsuf(argp, 'o')); 275 break; 276 default: 277 ldargs[ldargx] = argp; 278 break; 279 } 280 if (getsuf(ldargs[ldargx]) == 'o') 281 for (j = 0; j < ldargx; j++) 282 if (!strcmp(ldargs[j], ldargs[ldargx])) 283 goto duplicate; 284 ldargx++; 285 duplicate: 286 continue; 287 } 288 switch (argp[1]) { 289 290 case 'i': 291 while (i+1 < argc && argv[i+1][0] != '-' && 292 getsuf(argv[i+1]) != 'p') 293 i++; 294 continue; 295 case 'd': 296 if (argp[2] == 0) 297 continue; 298 ldargs[ldargx++] = argp; 299 continue; 300 case 'o': 301 ldargs[ldargx++] = argp; 302 i++; 303 ldargs[ldargx++] = argv[i]; 304 continue; 305 case 'l': 306 if (argp[2]) 307 ldargs[ldargx++] = argp; 308 continue; 309 case 'c': 310 case 'g': 311 case 'w': 312 case 'p': 313 case 'S': 314 case 'J': 315 case 'T': 316 case 'O': 317 case 'C': 318 case 'b': 319 case 's': 320 case 'z': 321 continue; 322 default: 323 ldargs[ldargx++] = argp; 324 continue; 325 } 326 } 327 ldargs[ldargx++] = lpc; 328 if (gflag) 329 ldargs[ldargx++] = "-lg"; 330 ldargs[ldargx++] = "-lnm"; 331 ldargs[ldargx++] = "-lc"; 332 ldargs[ldargx] = 0; 333 if (dosys(ld, ldargs, 0, 0)==0 && np == 1 && nxo == 0) 334 unlink(onepso); 335 done(); 336 } 337 338 dosys(cmd, argv, in, out) 339 char *cmd, **argv, *in, *out; 340 { 341 union wait status; 342 int pid; 343 344 if (debug) { 345 int i; 346 printf("%s:", cmd); 347 for (i = 0; argv[i]; i++) 348 printf(" %s", argv[i]); 349 if (in) 350 printf(" <%s", in); 351 if (out) 352 printf(" >%s", out); 353 printf("\n"); 354 } 355 pid = vfork(); 356 if (pid < 0) { 357 fprintf(stderr, "pc: No more processes\n"); 358 done(); 359 } 360 if (pid == 0) { 361 if (in) { 362 close(0); 363 if (open(in, 0) != 0) { 364 perror(in); 365 exit(1); 366 } 367 } 368 if (out) { 369 close(1); 370 unlink(out); 371 if (creat(out, 0666) != 1) { 372 perror(out); 373 exit(1); 374 } 375 } 376 signal(SIGINT, SIG_DFL); 377 execv(cmd, argv); 378 perror(cmd); 379 exit(1); 380 } 381 while (wait(&status) != pid) 382 ; 383 if (WIFSIGNALED(status)) { 384 if (status.w_termsig != SIGINT) 385 fprintf(stderr, "Fatal error in %s\n", cmd); 386 errs = 100; 387 done(); 388 /*NOTREACHED*/ 389 } 390 if (status.w_retcode) { 391 errs = 1; 392 remove(); 393 } 394 return (status.w_retcode); 395 } 396 397 done() 398 { 399 400 remove(); 401 exit(errs); 402 } 403 404 remove() 405 { 406 407 if (tfile[0]) 408 unlink(tfile[0]); 409 if (tfile[1]) 410 unlink(tfile[1]); 411 } 412 413 onintr() 414 { 415 416 errs = 1; 417 done(); 418 } 419 420 getsuf(cp) 421 char *cp; 422 { 423 424 if (*cp == 0) 425 return; 426 while (cp[1]) 427 cp++; 428 if (cp[-1] != '.') 429 return (0); 430 return (*cp); 431 } 432 433 char * 434 setsuf(as, ch) 435 char *as; 436 { 437 register char *s, *s1; 438 439 s = s1 = savestr(as); 440 while (*s) 441 if (*s++ == '/') 442 s1 = s; 443 s[-1] = ch; 444 return (s1); 445 } 446 447 #define NSAVETAB 512 448 char *savetab; 449 int saveleft; 450 451 char * 452 savestr(cp) 453 register char *cp; 454 { 455 register int len; 456 457 len = strlen(cp) + 1; 458 if (len > saveleft) { 459 saveleft = NSAVETAB; 460 if (len > saveleft) 461 saveleft = len; 462 savetab = (char *)malloc(saveleft); 463 if (savetab == 0) { 464 fprintf(stderr, "ran out of memory (savestr)\n"); 465 exit(1); 466 } 467 } 468 strncpy(savetab, cp, len); 469 cp = savetab; 470 savetab += len; 471 return (cp); 472 } 473 474 suffix(cp) 475 char *cp; 476 { 477 478 if (cp[0] == 0 || cp[1] == 0) 479 return (0); 480 while (cp[1]) 481 cp++; 482 if (cp[-1] == '.') 483 return (*cp); 484 return (0); 485 } 486