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1.1 root 1: static char sccsid[] = "@(#)pc.c 3.8 10/19/80";
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/new/pc0/a.out";
123: continue;
124: case '1':
125: pc1 = "/usr/src/new/pcc/pc1";
126: continue;
127: case '2':
128: pc2 = "/usr/src/new/pc2/a.out";
129: continue;
130: case '3':
131: pc3 = "/usr/src/new/pc3/a.out";
132: continue;
133: case 'l':
134: lpc = "/usr/src/lib/libpc/pclib";
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: if (Sflag && !Oflag)
206: tfile[0] = setsuf(argp, 's');
207: else
208: tfile[0] = tname[0];
209: if (dosys(pc2, pc2args, tfile[1], tfile[0]))
210: continue;
211: unlink(tfile[1]);
212: tfile[1] = 0;
213: if (Oflag) {
214: if (Sflag)
215: tfile[1] = setsuf(argp, 's');
216: else
217: tfile[1] = tname[1];
218: if (dosys(c2, c2args, tfile[0], tfile[1]))
219: continue;
220: unlink(tfile[0]);
221: tfile[0] = tfile[1];
222: tfile[1] = 0;
223: }
224: if (Sflag) {
225: tfile[0] = 0;
226: continue;
227: }
228: asargx = 1;
229: if (Jflag)
230: asargs[asargx++] = "-J";
231: asargs[asargx++] = tfile[0];
232: asargs[asargx++] = "-o";
233: tfile[1] = setsuf(argp, 'o');
234: asargs[asargx++] = tfile[1];
235: asargs[asargx] = 0;
236: if (dosys(as, asargs, 0, 0))
237: continue;
238: tfile[1] = 0;
239: remove();
240: }
241: if (errs || cflag || Sflag)
242: done();
243: /* char *pc3args[NARGS] = { "pc3", 0 }; */
244: pc3args[0] = "pc3";
245: for (i = 0; i < argc; i++) {
246: argp = argv[i];
247: if (!strcmp(argp, "-o"))
248: i++;
249: if (argp[0] == '-')
250: continue;
251: switch (getsuf(argp)) {
252:
253: case 'o':
254: pc3args[pc3argx++] = argp;
255: nxo++;
256: continue;
257: case 's':
258: case 'p':
259: onepso = pc3args[pc3argx++] =
260: savestr(setsuf(argp, 'o'));
261: np++;
262: continue;
263: }
264: }
265: pc3args[pc3argx] = 0;
266: if (dosys(pc3, pc3args, 0, 0))
267: done();
268: /* char *ldargs[NARGS] = { "ld", "-X", "/lib/crt0.o", 0, }; */
269: ldargs[0] = "ld";
270: ldargs[1] = "-X";
271: ldargs[2] = crt0;
272: for (i = 0; i < argc; i++) {
273: argp = argv[i];
274: if (argp[0] != '-') {
275: switch (getsuf(argp)) {
276:
277: case 'p':
278: case 's':
279: ldargs[ldargx] = savestr(setsuf(argp, 'o'));
280: break;
281: default:
282: ldargs[ldargx] = argp;
283: break;
284: }
285: if (getsuf(ldargs[ldargx]) == 'o')
286: for (j = 0; j < ldargx; j++)
287: if (!strcmp(ldargs[j], ldargs[ldargx]))
288: goto duplicate;
289: ldargx++;
290: duplicate:
291: continue;
292: }
293: switch (argp[1]) {
294:
295: case 'i':
296: while (i+1 < argc && argv[i+1][0] != '-' &&
297: getsuf(argv[i+1]) != 'p')
298: i++;
299: continue;
300: case 'd':
301: if (argp[2] == 0)
302: continue;
303: ldargs[ldargx++] = argp;
304: continue;
305: case 'o':
306: ldargs[ldargx++] = argp;
307: i++;
308: ldargs[ldargx++] = argv[i];
309: continue;
310: case 'l':
311: if (argp[2])
312: ldargs[ldargx++] = argp;
313: continue;
314: case 'c':
315: case 'g':
316: case 'w':
317: case 'p':
318: case 'S':
319: case 'J':
320: case 'T':
321: case 'O':
322: case 'C':
323: case 'b':
324: case 's':
325: case 'z':
326: continue;
327: default:
328: ldargs[ldargx++] = argp;
329: continue;
330: }
331: }
332: ldargs[ldargx++] = lpc;
333: if (gflag)
334: ldargs[ldargx++] = "-lg";
335: ldargs[ldargx++] = "-lm";
336: ldargs[ldargx++] = "-lc";
337: ldargs[ldargx] = 0;
338: if (dosys(ld, ldargs, 0, 0)==0 && np == 1 && nxo == 0)
339: unlink(onepso);
340: done();
341: }
342:
343: dosys(cmd, argv, in, out)
344: char *cmd, **argv, *in, *out;
345: {
346: union wait status;
347: int pid;
348:
349: if (debug) {
350: int i;
351: printf("%s:", cmd);
352: for (i = 0; argv[i]; i++)
353: printf(" %s", argv[i]);
354: if (in)
355: printf(" <%s", in);
356: if (out)
357: printf(" >%s", out);
358: printf("\n");
359: }
360: pid = vfork();
361: if (pid < 0) {
362: fprintf(stderr, "pc: No more processes\n");
363: done();
364: }
365: if (pid == 0) {
366: if (in) {
367: close(0);
368: if (open(in, 0) != 0) {
369: perror(in);
370: exit(1);
371: }
372: }
373: if (out) {
374: close(1);
375: unlink(out);
376: if (creat(out, 0666) != 1) {
377: perror(out);
378: exit(1);
379: }
380: }
381: signal(SIGINT, SIG_DFL);
382: execv(cmd, argv);
383: perror(cmd);
384: exit(1);
385: }
386: while (wait(&status) != pid)
387: ;
388: if (WIFSIGNALED(status)) {
389: if (status.w_termsig != SIGINT)
390: fprintf(stderr, "Fatal error in %s\n", cmd);
391: errs = 100;
392: done();
393: /*NOTREACHED*/
394: }
395: if (status.w_retcode) {
396: errs = 1;
397: remove();
398: }
399: return (status.w_retcode);
400: }
401:
402: done()
403: {
404:
405: remove();
406: exit(errs);
407: }
408:
409: remove()
410: {
411:
412: if (tfile[0])
413: unlink(tfile[0]);
414: if (tfile[1])
415: unlink(tfile[1]);
416: }
417:
418: onintr()
419: {
420:
421: errs = 1;
422: done();
423: }
424:
425: getsuf(cp)
426: char *cp;
427: {
428:
429: if (*cp == 0)
430: return;
431: while (cp[1])
432: cp++;
433: if (cp[-1] != '.')
434: return (0);
435: return (*cp);
436: }
437:
438: char *
439: setsuf(as, ch)
440: char *as;
441: {
442: register char *s, *s1;
443:
444: s = s1 = savestr(as);
445: while (*s)
446: if (*s++ == '/')
447: s1 = s;
448: s[-1] = ch;
449: return (s1);
450: }
451:
452: #define NSAVETAB 512
453: char *savetab;
454: int saveleft;
455:
456: char *
457: savestr(cp)
458: register char *cp;
459: {
460: register int len;
461:
462: len = strlen(cp) + 1;
463: if (len > saveleft) {
464: saveleft = NSAVETAB;
465: if (len > saveleft)
466: saveleft = len;
467: savetab = (char *)malloc(saveleft);
468: if (savetab == 0) {
469: fprintf(stderr, "ran out of memory (savestr)\n");
470: exit(1);
471: }
472: }
473: strncpy(savetab, cp, len);
474: cp = savetab;
475: savetab += len;
476: return (cp);
477: }
478:
479: suffix(cp)
480: char *cp;
481: {
482:
483: if (cp[0] == 0 || cp[1] == 0)
484: return (0);
485: while (cp[1])
486: cp++;
487: if (cp[-1] == '.')
488: return (*cp);
489: return (0);
490: }
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