1 static char sccsid[] = "@(#)pc.c 3.6 09/24/80"; 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/pc2/a.out"; 129 continue; 130 case '3': 131 pc3 = "/usr/src/cmd/pc3/a.out"; 132 continue; 133 case 'l': 134 lpc = "-lnpc"; 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) != 'p') 176 continue; 177 tfile[0] = tname[0]; 178 pc0args[2] = tfile[0]; 179 pc0argx = savargx; 180 if (pflag) 181 pc0args[pc0argx++] = "-p"; 182 pc0args[pc0argx++] = argp; 183 pc0args[pc0argx] = 0; 184 if (dosys(pc0, pc0args, 0, 0)) 185 continue; 186 pc1args[1] = tfile[0]; 187 tfile[1] = tname[1]; 188 if (dosys(pc1, pc1args, 0, tfile[1])) 189 continue; 190 unlink(tfile[0]); 191 if (Sflag && !Oflag) 192 tfile[0] = setsuf(argp, 's'); 193 else 194 tfile[0] = tname[0]; 195 if (dosys(pc2, pc2args, tfile[1], tfile[0])) 196 continue; 197 unlink(tfile[1]); 198 tfile[1] = 0; 199 if (Oflag) { 200 if (Sflag) 201 tfile[1] = setsuf(argp, 's'); 202 else 203 tfile[1] = tname[1]; 204 if (dosys(c2, c2args, tfile[0], tfile[1])) 205 continue; 206 unlink(tfile[0]); 207 tfile[0] = tfile[1]; 208 tfile[1] = 0; 209 } 210 if (Sflag) { 211 tfile[0] = 0; 212 continue; 213 } 214 asargx = 1; 215 if (Jflag) 216 asargs[asargx++] = "-J"; 217 asargs[asargx++] = tfile[0]; 218 asargs[asargx++] = "-o"; 219 tfile[1] = setsuf(argp, 'o'); 220 asargs[asargx++] = tfile[1]; 221 asargs[asargx] = 0; 222 if (dosys(as, asargs, 0, 0)) 223 continue; 224 tfile[1] = 0; 225 remove(); 226 } 227 if (errs || cflag || Sflag) 228 done(); 229 /* char *pc3args[NARGS] = { "pc3", 0 }; */ 230 pc3args[0] = "pc3"; 231 for (i = 0; i < argc; i++) { 232 argp = argv[i]; 233 if (!strcmp(argp, "-o")) 234 i++; 235 if (argp[0] == '-') 236 continue; 237 switch (getsuf(argp)) { 238 239 case 'o': 240 pc3args[pc3argx++] = argp; 241 nxo++; 242 continue; 243 case 'p': 244 onepso = pc3args[pc3argx++] = 245 savestr(setsuf(argp, 'o')); 246 np++; 247 continue; 248 } 249 } 250 pc3args[pc3argx] = 0; 251 if (dosys(pc3, pc3args, 0, 0)) 252 done(); 253 /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */ 254 ldargs[0] = "ld"; 255 ldargs[1] = "-X"; 256 ldargs[2] = crt0; 257 for (i = 0; i < argc; i++) { 258 argp = argv[i]; 259 if (argp[0] != '-') { 260 switch (getsuf(argp)) { 261 262 case 'p': 263 ldargs[ldargx] = savestr(setsuf(argp, 'o')); 264 break; 265 default: 266 ldargs[ldargx] = argp; 267 break; 268 } 269 if (getsuf(ldargs[ldargx]) == 'o') 270 for (j = 0; j < ldargx; j++) 271 if (!strcmp(ldargs[j], ldargs[ldargx])) 272 goto duplicate; 273 ldargx++; 274 duplicate: 275 continue; 276 } 277 switch (argp[1]) { 278 279 case 'i': 280 while (i+1 < argc && argv[i+1][0] != '-' && 281 getsuf(argv[i+1]) != 'p') 282 i++; 283 continue; 284 case 'd': 285 if (argp[2] == 0) 286 continue; 287 ldargs[ldargx++] = argp; 288 continue; 289 case 'o': 290 ldargs[ldargx++] = argp; 291 i++; 292 ldargs[ldargx++] = argv[i]; 293 continue; 294 case 'l': 295 if (argp[2]) 296 ldargs[ldargx++] = argp; 297 continue; 298 case 'c': 299 case 'g': 300 case 'w': 301 case 'p': 302 case 'S': 303 case 'J': 304 case 'T': 305 case 'O': 306 case 'C': 307 case 'b': 308 case 's': 309 case 'z': 310 continue; 311 default: 312 ldargs[ldargx++] = argp; 313 continue; 314 } 315 } 316 ldargs[ldargx++] = lpc; 317 if (gflag) 318 ldargs[ldargx++] = "-lg"; 319 ldargs[ldargx++] = "-lm"; 320 ldargs[ldargx++] = "-lc"; 321 ldargs[ldargx] = 0; 322 if (dosys(ld, ldargs, 0, 0)==0 && np == 1 && nxo == 0) 323 unlink(onepso); 324 done(); 325 } 326 327 dosys(cmd, argv, in, out) 328 char *cmd, **argv, *in, *out; 329 { 330 union wait status; 331 int pid; 332 333 if (debug) { 334 int i; 335 printf("%s:", cmd); 336 for (i = 0; argv[i]; i++) 337 printf(" %s", argv[i]); 338 if (in) 339 printf(" <%s", in); 340 if (out) 341 printf(" >%s", out); 342 printf("\n"); 343 } 344 pid = vfork(); 345 if (pid < 0) { 346 fprintf(stderr, "pc: No more processes\n"); 347 done(); 348 } 349 if (pid == 0) { 350 if (in) { 351 close(0); 352 if (open(in, 0) != 0) { 353 perror(in); 354 exit(1); 355 } 356 } 357 if (out) { 358 close(1); 359 unlink(out); 360 if (creat(out, 0666) != 1) { 361 perror(out); 362 exit(1); 363 } 364 } 365 signal(SIGINT, SIG_DFL); 366 execv(cmd, argv); 367 perror(cmd); 368 exit(1); 369 } 370 while (wait(&status) != pid) 371 ; 372 if (WIFSIGNALED(status)) { 373 if (status.w_termsig != SIGINT) 374 fprintf(stderr, "Fatal error in %s\n", cmd); 375 errs = 100; 376 done(); 377 /*NOTREACHED*/ 378 } 379 if (status.w_retcode) { 380 errs = 1; 381 remove(); 382 } 383 return (status.w_retcode); 384 } 385 386 done() 387 { 388 389 remove(); 390 exit(errs); 391 } 392 393 remove() 394 { 395 396 if (tfile[0]) 397 unlink(tfile[0]); 398 if (tfile[1]) 399 unlink(tfile[1]); 400 } 401 402 onintr() 403 { 404 405 errs = 1; 406 done(); 407 } 408 409 getsuf(cp) 410 char *cp; 411 { 412 413 if (*cp == 0) 414 return; 415 while (cp[1]) 416 cp++; 417 if (cp[-1] != '.') 418 return (0); 419 return (*cp); 420 } 421 422 char * 423 setsuf(as, ch) 424 char *as; 425 { 426 register char *s, *s1; 427 428 s = s1 = savestr(as); 429 while (*s) 430 if (*s++ == '/') 431 s1 = s; 432 s[-1] = ch; 433 return (s1); 434 } 435 436 #define NSAVETAB 512 437 char *savetab; 438 int saveleft; 439 440 char * 441 savestr(cp) 442 register char *cp; 443 { 444 register int len; 445 446 len = strlen(cp) + 1; 447 if (len > saveleft) { 448 saveleft = NSAVETAB; 449 if (len > saveleft) 450 saveleft = len; 451 savetab = (char *)malloc(saveleft); 452 if (savetab == 0) { 453 fprintf(stderr, "ran out of memory (savestr)\n"); 454 exit(1); 455 } 456 } 457 strncpy(savetab, cp, len); 458 cp = savetab; 459 savetab += len; 460 return (cp); 461 } 462 463 suffix(cp) 464 char *cp; 465 { 466 467 if (cp[0] == 0 || cp[1] == 0) 468 return (0); 469 while (cp[1]) 470 cp++; 471 if (cp[-1] == '.') 472 return (*cp); 473 return (0); 474 } 475