mirror of
https://github.com/UberGames/ioef.git
synced 2024-12-11 05:11:29 +00:00
797 lines
19 KiB
C
797 lines
19 KiB
C
/*
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* lcc [ option ]... [ file | -llib ]...
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* front end for the ANSI C compiler
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*/
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static char rcsid[] = "Id: dummy rcsid";
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <ctype.h>
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#include <signal.h>
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#include <unistd.h>
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#ifndef TEMPDIR
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#define TEMPDIR "/tmp"
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#endif
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typedef struct list *List;
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struct list { /* circular list nodes: */
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char *str; /* option or file name */
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List link; /* next list element */
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};
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static void *alloc(int);
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static List append(char *,List);
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extern char *basename(char *);
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static int callsys(char *[]);
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extern char *concat(char *, char *);
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static int compile(char *, char *);
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static void compose(char *[], List, List, List);
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static void error(char *, char *);
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static char *exists(char *);
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static char *first(char *);
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static int filename(char *, char *);
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static List find(char *, List);
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static void help(void);
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static void initinputs(void);
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static void interrupt(int);
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static void opt(char *);
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static List path2list(const char *);
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extern int main(int, char *[]);
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extern char *replace(const char *, int, int);
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static void rm(List);
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extern char *strsave(const char *);
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extern char *stringf(const char *, ...);
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extern int suffix(char *, char *[], int);
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extern char *tempname(char *);
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#ifndef __sun
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extern int getpid(void);
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#endif
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extern char *cpp[], *include[], *com[], *as[],*ld[], inputs[], *suffixes[];
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extern int option(char *);
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static int errcnt; /* number of errors */
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static int Eflag; /* -E specified */
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static int Sflag = 1; /* -S specified */ //for Q3 we always generate asm
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static int cflag; /* -c specified */
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static int verbose; /* incremented for each -v */
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static List llist[2]; /* loader files, flags */
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static List alist; /* assembler flags */
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static List clist; /* compiler flags */
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static List plist; /* preprocessor flags */
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static List ilist; /* list of additional includes from LCCINPUTS */
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static List rmlist; /* list of files to remove */
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static char *outfile; /* ld output file or -[cS] object file */
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static int ac; /* argument count */
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static char **av; /* argument vector */
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char *tempdir = TEMPDIR; /* directory for temporary files */
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static char *progname;
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static List lccinputs; /* list of input directories */
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extern void UpdatePaths( const char *lccBinary );
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int main(int argc, char *argv[]) {
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int i, j, nf;
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progname = argv[0];
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UpdatePaths( progname );
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ac = argc + 50;
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av = alloc(ac*sizeof(char *));
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if (signal(SIGINT, SIG_IGN) != SIG_IGN)
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signal(SIGINT, interrupt);
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if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
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signal(SIGTERM, interrupt);
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#ifdef SIGHUP
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if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
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signal(SIGHUP, interrupt);
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#endif
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if (getenv("TMP"))
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tempdir = getenv("TMP");
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else if (getenv("TEMP"))
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tempdir = getenv("TEMP");
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else if (getenv("TMPDIR"))
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tempdir = getenv("TMPDIR");
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assert(tempdir);
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i = strlen(tempdir);
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for (; (i > 0 && tempdir[i-1] == '/') || tempdir[i-1] == '\\'; i--)
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tempdir[i-1] = '\0';
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if (argc <= 1) {
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help();
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exit(0);
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}
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plist = append("-D__LCC__", 0);
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initinputs();
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if (getenv("LCCDIR"))
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option(stringf("-lccdir=%s", getenv("LCCDIR")));
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for (nf = 0, i = j = 1; i < argc; i++) {
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if (strcmp(argv[i], "-o") == 0) {
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if (++i < argc) {
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if (suffix(argv[i], suffixes, 2) >= 0) {
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error("-o would overwrite %s", argv[i]);
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exit(8);
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}
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outfile = argv[i];
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continue;
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} else {
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error("unrecognized option `%s'", argv[i-1]);
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exit(8);
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}
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} else if (strcmp(argv[i], "-target") == 0) {
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if (argv[i+1] && *argv[i+1] != '-')
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i++;
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continue;
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} else if (*argv[i] == '-' && argv[i][1] != 'l') {
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opt(argv[i]);
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continue;
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} else if (*argv[i] != '-' && suffix(argv[i], suffixes, 3) >= 0)
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nf++;
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argv[j++] = argv[i];
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}
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if ((cflag || Sflag) && outfile && nf != 1) {
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fprintf(stderr, "%s: -o %s ignored\n", progname, outfile);
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outfile = 0;
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}
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argv[j] = 0;
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for (i = 0; include[i]; i++)
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plist = append(include[i], plist);
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if (ilist) {
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List b = ilist;
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do {
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b = b->link;
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plist = append(b->str, plist);
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} while (b != ilist);
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}
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ilist = 0;
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for (i = 1; argv[i]; i++)
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if (*argv[i] == '-')
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opt(argv[i]);
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else {
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char *name = exists(argv[i]);
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if (name) {
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if (strcmp(name, argv[i]) != 0
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|| (nf > 1 && suffix(name, suffixes, 3) >= 0))
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fprintf(stderr, "%s:\n", name);
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filename(name, 0);
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} else
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error("can't find `%s'", argv[i]);
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}
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if (errcnt == 0 && !Eflag && !Sflag && !cflag && llist[1]) {
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compose(ld, llist[0], llist[1],
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append(outfile ? outfile : concat("a", first(suffixes[4])), 0));
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if (callsys(av))
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errcnt++;
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}
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rm(rmlist);
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return errcnt ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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/* alloc - allocate n bytes or die */
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static void *alloc(int n) {
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static char *avail, *limit;
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n = (n + sizeof(char *) - 1)&~(sizeof(char *) - 1);
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if (n >= limit - avail) {
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avail = malloc(n + 4*1024);
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assert(avail);
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limit = avail + n + 4*1024;
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}
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avail += n;
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return avail - n;
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}
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/* append - append a node with string str onto list, return new list */
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static List append(char *str, List list) {
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List p = alloc(sizeof *p);
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p->str = str;
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if (list) {
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p->link = list->link;
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list->link = p;
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} else
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p->link = p;
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return p;
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}
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/* basename - return base name for name, e.g. /usr/drh/foo.c => foo */
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char *basename(char *name) {
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char *s, *b, *t = 0;
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for (b = s = name; *s; s++)
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if (*s == '/' || *s == '\\') {
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b = s + 1;
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t = 0;
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} else if (*s == '.')
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t = s;
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s = strsave(b);
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if (t)
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s[t-b] = 0;
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return s;
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}
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#ifdef WIN32
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#include <process.h>
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#else
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#define _P_WAIT 0
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#ifndef __sun
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extern int fork(void);
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#endif
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extern int wait(int *);
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static int _spawnvp(int mode, const char *cmdname, char *argv[]) {
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int pid, n, status;
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switch (pid = fork()) {
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case -1:
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fprintf(stderr, "%s: no more processes\n", progname);
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return 100;
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case 0:
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// TTimo removing hardcoded paths, searching in $PATH
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execvp(cmdname, argv);
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fprintf(stderr, "%s: ", progname);
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perror(cmdname);
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fflush(stdout);
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exit(100);
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}
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while ((n = wait(&status)) != pid && n != -1)
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;
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if (n == -1)
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status = -1;
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if (status&0377) {
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fprintf(stderr, "%s: fatal error in %s\n", progname, cmdname);
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status |= 0400;
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}
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return (status>>8)&0377;
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}
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#endif
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/* callsys - execute the command described by av[0...], return status */
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static int callsys(char **av) {
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int i, status = 0;
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static char **argv;
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static int argc;
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char *executable;
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for (i = 0; av[i] != NULL; i++)
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;
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if (i + 1 > argc) {
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argc = i + 1;
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if (argv == NULL)
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argv = malloc(argc*sizeof *argv);
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else
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argv = realloc(argv, argc*sizeof *argv);
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assert(argv);
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}
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for (i = 0; status == 0 && av[i] != NULL; ) {
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int j = 0;
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char *s = NULL;
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for ( ; av[i] != NULL && (s = strchr(av[i], '\n')) == NULL; i++)
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argv[j++] = av[i];
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if (s != NULL) {
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if (s > av[i])
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argv[j++] = stringf("%.*s", s - av[i], av[i]);
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if (s[1] != '\0')
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av[i] = s + 1;
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else
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i++;
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}
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argv[j] = NULL;
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executable = strsave( argv[0] );
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argv[0] = stringf( "\"%s\"", argv[0] );
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if (verbose > 0) {
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int k;
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fprintf(stderr, "%s", argv[0]);
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for (k = 1; argv[k] != NULL; k++)
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fprintf(stderr, " %s", argv[k]);
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fprintf(stderr, "\n");
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}
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if (verbose < 2)
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#ifndef WIN32
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status = _spawnvp(_P_WAIT, executable, argv);
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#else
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status = _spawnvp(_P_WAIT, executable, (const char* const*)argv);
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#endif
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if (status == -1) {
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fprintf(stderr, "%s: ", progname);
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perror(argv[0]);
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}
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}
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return status;
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}
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/* concat - return concatenation of strings s1 and s2 */
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char *concat(char *s1, char *s2) {
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int n = strlen(s1);
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char *s = alloc(n + strlen(s2) + 1);
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strcpy(s, s1);
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strcpy(s + n, s2);
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return s;
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}
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/* compile - compile src into dst, return status */
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static int compile(char *src, char *dst) {
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compose(com, clist, append(src, 0), append(dst, 0));
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return callsys(av);
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}
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/* compose - compose cmd into av substituting a, b, c for $1, $2, $3, resp. */
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static void compose(char *cmd[], List a, List b, List c) {
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int i, j;
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List lists[3];
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lists[0] = a;
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lists[1] = b;
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lists[2] = c;
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for (i = j = 0; cmd[i]; i++) {
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char *s = strchr(cmd[i], '$');
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if (s && isdigit(s[1])) {
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int k = s[1] - '0';
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assert(k >=1 && k <= 3);
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if ((b = lists[k-1])) {
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b = b->link;
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av[j] = alloc(strlen(cmd[i]) + strlen(b->str) - 1);
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strncpy(av[j], cmd[i], s - cmd[i]);
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av[j][s-cmd[i]] = '\0';
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strcat(av[j], b->str);
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strcat(av[j++], s + 2);
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while (b != lists[k-1]) {
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b = b->link;
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assert(j < ac);
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av[j++] = b->str;
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};
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}
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} else if (*cmd[i]) {
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assert(j < ac);
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av[j++] = cmd[i];
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}
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}
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av[j] = NULL;
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}
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/* error - issue error msg according to fmt, bump error count */
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static void error(char *fmt, char *msg) {
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fprintf(stderr, "%s: ", progname);
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fprintf(stderr, fmt, msg);
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fprintf(stderr, "\n");
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errcnt++;
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}
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/* exists - if `name' readable return its path name or return null */
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static char *exists(char *name) {
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List b;
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if ( (name[0] == '/' || name[0] == '\\' || name[2] == ':')
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&& access(name, 4) == 0)
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return name;
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if (!(name[0] == '/' || name[0] == '\\' || name[2] == ':')
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&& (b = lccinputs))
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do {
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b = b->link;
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if (b->str[0]) {
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char buf[1024];
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sprintf(buf, "%s/%s", b->str, name);
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if (access(buf, 4) == 0)
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return strsave(buf);
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} else if (access(name, 4) == 0)
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return name;
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} while (b != lccinputs);
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if (verbose > 1)
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return name;
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return 0;
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}
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/* first - return first component in semicolon separated list */
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static char *first(char *list) {
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char *s = strchr(list, ';');
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if (s) {
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char buf[1024];
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strncpy(buf, list, s-list);
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buf[s-list] = '\0';
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return strsave(buf);
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} else
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return list;
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}
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/* filename - process file name argument `name', return status */
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static int filename(char *name, char *base) {
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int status = 0;
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static char *stemp, *itemp;
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if (base == 0)
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base = basename(name);
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switch (suffix(name, suffixes, 4)) {
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case 0: /* C source files */
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compose(cpp, plist, append(name, 0), 0);
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if (Eflag) {
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status = callsys(av);
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break;
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}
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if (itemp == NULL)
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itemp = tempname(first(suffixes[1]));
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compose(cpp, plist, append(name, 0), append(itemp, 0));
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status = callsys(av);
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if (status == 0)
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return filename(itemp, base);
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break;
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case 1: /* preprocessed source files */
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if (Eflag)
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break;
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if (Sflag)
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status = compile(name, outfile ? outfile : concat(base, first(suffixes[2])));
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else if ((status = compile(name, stemp?stemp:(stemp=tempname(first(suffixes[2]))))) == 0)
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return filename(stemp, base);
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break;
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case 2: /* assembly language files */
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if (Eflag)
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break;
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if (!Sflag) {
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char *ofile;
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if (cflag && outfile)
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ofile = outfile;
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else if (cflag)
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ofile = concat(base, first(suffixes[3]));
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else
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ofile = tempname(first(suffixes[3]));
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compose(as, alist, append(name, 0), append(ofile, 0));
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status = callsys(av);
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if (!find(ofile, llist[1]))
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llist[1] = append(ofile, llist[1]);
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}
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break;
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case 3: /* object files */
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if (!find(name, llist[1]))
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llist[1] = append(name, llist[1]);
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break;
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default:
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if (Eflag) {
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compose(cpp, plist, append(name, 0), 0);
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status = callsys(av);
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}
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llist[1] = append(name, llist[1]);
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break;
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}
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if (status)
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errcnt++;
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return status;
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}
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/* find - find 1st occurrence of str in list, return list node or 0 */
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static List find(char *str, List list) {
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List b;
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if ((b = list))
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do {
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if (strcmp(str, b->str) == 0)
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return b;
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} while ((b = b->link) != list);
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return 0;
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}
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/* help - print help message */
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static void help(void) {
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static char *msgs[] = {
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"", " [ option | file ]...\n",
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" except for -l, options are processed left-to-right before files\n",
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" unrecognized options are taken to be linker options\n",
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"-A warn about nonANSI usage; 2nd -A warns more\n",
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"-b emit expression-level profiling code; see bprint(1)\n",
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#ifdef sparc
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"-Bstatic -Bdynamic specify static or dynamic libraries\n",
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#endif
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"-Bdir/ use the compiler named `dir/rcc'\n",
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"-c compile only\n",
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"-dn set switch statement density to `n'\n",
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"-Dname -Dname=def define the preprocessor symbol `name'\n",
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"-E run only the preprocessor on the named C programs and unsuffixed files\n",
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"-g produce symbol table information for debuggers\n",
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"-help or -? print this message\n",
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"-Idir add `dir' to the beginning of the list of #include directories\n",
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"-lx search library `x'\n",
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"-N do not search the standard directories for #include files\n",
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"-n emit code to check for dereferencing zero pointers\n",
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"-O is ignored\n",
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"-o file leave the output in `file'\n",
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"-P print ANSI-style declarations for globals\n",
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"-p -pg emit profiling code; see prof(1) and gprof(1)\n",
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"-S compile to assembly language\n",
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#ifdef linux
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"-static specify static libraries (default is dynamic)\n",
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#endif
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"-t -tname emit function tracing calls to printf or to `name'\n",
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"-target name is ignored\n",
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"-tempdir=dir place temporary files in `dir/'", "\n"
|
|
"-Uname undefine the preprocessor symbol `name'\n",
|
|
"-v show commands as they are executed; 2nd -v suppresses execution\n",
|
|
"-w suppress warnings\n",
|
|
"-Woarg specify system-specific `arg'\n",
|
|
"-W[pfal]arg pass `arg' to the preprocessor, compiler, assembler, or linker\n",
|
|
0 };
|
|
int i;
|
|
char *s;
|
|
|
|
msgs[0] = progname;
|
|
for (i = 0; msgs[i]; i++) {
|
|
fprintf(stderr, "%s", msgs[i]);
|
|
if (strncmp("-tempdir", msgs[i], 8) == 0 && tempdir)
|
|
fprintf(stderr, "; default=%s", tempdir);
|
|
}
|
|
#define xx(v) if ((s = getenv(#v))) fprintf(stderr, #v "=%s\n", s)
|
|
xx(LCCINPUTS);
|
|
xx(LCCDIR);
|
|
#undef xx
|
|
}
|
|
|
|
/* initinputs - if LCCINPUTS or include is defined, use them to initialize various lists */
|
|
static void initinputs(void) {
|
|
char *s = getenv("LCCINPUTS");
|
|
List b;
|
|
|
|
if (s == 0 || (s = inputs)[0] == 0)
|
|
s = ".";
|
|
if (s) {
|
|
lccinputs = path2list(s);
|
|
if ((b = lccinputs))
|
|
do {
|
|
b = b->link;
|
|
if (strcmp(b->str, ".") != 0) {
|
|
ilist = append(concat("-I", b->str), ilist);
|
|
if (strstr(com[1], "win32") == NULL)
|
|
llist[0] = append(concat("-L", b->str), llist[0]);
|
|
} else
|
|
b->str = "";
|
|
} while (b != lccinputs);
|
|
}
|
|
}
|
|
|
|
/* interrupt - catch interrupt signals */
|
|
static void interrupt(int n) {
|
|
rm(rmlist);
|
|
exit(n = 100);
|
|
}
|
|
|
|
/* opt - process option in arg */
|
|
static void opt(char *arg) {
|
|
switch (arg[1]) { /* multi-character options */
|
|
case 'W': /* -Wxarg */
|
|
if (arg[2] && arg[3])
|
|
switch (arg[2]) {
|
|
case 'o':
|
|
if (option(&arg[3]))
|
|
return;
|
|
break;
|
|
case 'p':
|
|
plist = append(&arg[3], plist);
|
|
return;
|
|
case 'f':
|
|
if (strcmp(&arg[3], "-C") || option("-b")) {
|
|
clist = append(&arg[3], clist);
|
|
return;
|
|
}
|
|
break; /* and fall thru */
|
|
case 'a':
|
|
alist = append(&arg[3], alist);
|
|
return;
|
|
case 'l':
|
|
llist[0] = append(&arg[3], llist[0]);
|
|
return;
|
|
}
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
case 'd': /* -dn */
|
|
arg[1] = 's';
|
|
clist = append(arg, clist);
|
|
return;
|
|
case 't': /* -t -tname -tempdir=dir */
|
|
if (strncmp(arg, "-tempdir=", 9) == 0)
|
|
tempdir = arg + 9;
|
|
else
|
|
clist = append(arg, clist);
|
|
return;
|
|
case 'p': /* -p -pg */
|
|
if (option(arg))
|
|
clist = append(arg, clist);
|
|
else
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
case 'D': /* -Dname -Dname=def */
|
|
case 'U': /* -Uname */
|
|
case 'I': /* -Idir */
|
|
plist = append(arg, plist);
|
|
return;
|
|
case 'B': /* -Bdir -Bstatic -Bdynamic */
|
|
#ifdef sparc
|
|
if (strcmp(arg, "-Bstatic") == 0 || strcmp(arg, "-Bdynamic") == 0)
|
|
llist[1] = append(arg, llist[1]);
|
|
else
|
|
#endif
|
|
{
|
|
static char *path;
|
|
if (path)
|
|
error("-B overwrites earlier option", 0);
|
|
path = arg + 2;
|
|
if (strstr(com[1], "win32") != NULL)
|
|
com[0] = concat(replace(path, '/', '\\'), concat("rcc", first(suffixes[4])));
|
|
else
|
|
com[0] = concat(path, "rcc");
|
|
if (path[0] == 0)
|
|
error("missing directory in -B option", 0);
|
|
}
|
|
return;
|
|
case 'h':
|
|
if (strcmp(arg, "-help") == 0) {
|
|
static int printed = 0;
|
|
case '?':
|
|
if (!printed)
|
|
help();
|
|
printed = 1;
|
|
return;
|
|
}
|
|
#ifdef linux
|
|
case 's':
|
|
if (strcmp(arg,"-static") == 0) {
|
|
if (!option(arg))
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
}
|
|
#endif
|
|
}
|
|
if (arg[2] == 0)
|
|
switch (arg[1]) { /* single-character options */
|
|
case 'S':
|
|
Sflag++;
|
|
return;
|
|
case 'O':
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
case 'A': case 'n': case 'w': case 'P':
|
|
clist = append(arg, clist);
|
|
return;
|
|
case 'g': case 'b':
|
|
if (option(arg))
|
|
clist = append(arg[1] == 'g' ? "-g2" : arg, clist);
|
|
else
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
case 'G':
|
|
if (option(arg)) {
|
|
clist = append("-g3", clist);
|
|
llist[0] = append("-N", llist[0]);
|
|
} else
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
return;
|
|
case 'E':
|
|
Eflag++;
|
|
return;
|
|
case 'c':
|
|
cflag++;
|
|
return;
|
|
case 'N':
|
|
if (strcmp(basename(cpp[0]), "gcc-cpp") == 0)
|
|
plist = append("-nostdinc", plist);
|
|
include[0] = 0;
|
|
ilist = 0;
|
|
return;
|
|
case 'v':
|
|
if (verbose++ == 0) {
|
|
if (strcmp(basename(cpp[0]), "gcc-cpp") == 0)
|
|
plist = append(arg, plist);
|
|
clist = append(arg, clist);
|
|
fprintf(stderr, "%s %s\n", progname, rcsid);
|
|
}
|
|
return;
|
|
}
|
|
if (cflag || Sflag || Eflag)
|
|
fprintf(stderr, "%s: %s ignored\n", progname, arg);
|
|
else
|
|
llist[1] = append(arg, llist[1]);
|
|
}
|
|
|
|
/* path2list - convert a colon- or semicolon-separated list to a list */
|
|
static List path2list(const char *path) {
|
|
List list = NULL;
|
|
char sep = ':';
|
|
|
|
if (path == NULL)
|
|
return NULL;
|
|
if (strchr(path, ';'))
|
|
sep = ';';
|
|
while (*path) {
|
|
char *p, buf[512];
|
|
if ((p = strchr(path, sep))) {
|
|
assert(p - path < sizeof buf);
|
|
strncpy(buf, path, p - path);
|
|
buf[p-path] = '\0';
|
|
} else {
|
|
assert(strlen(path) < sizeof buf);
|
|
strcpy(buf, path);
|
|
}
|
|
if (!find(buf, list))
|
|
list = append(strsave(buf), list);
|
|
if (p == 0)
|
|
break;
|
|
path = p + 1;
|
|
}
|
|
return list;
|
|
}
|
|
|
|
/* replace - copy str, then replace occurrences of from with to, return the copy */
|
|
char *replace(const char *str, int from, int to) {
|
|
char *s = strsave(str), *p = s;
|
|
|
|
for ( ; (p = strchr(p, from)) != NULL; p++)
|
|
*p = to;
|
|
return s;
|
|
}
|
|
|
|
/* rm - remove files in list */
|
|
static void rm(List list) {
|
|
if (list) {
|
|
List b = list;
|
|
if (verbose)
|
|
fprintf(stderr, "rm");
|
|
do {
|
|
if (verbose)
|
|
fprintf(stderr, " %s", b->str);
|
|
if (verbose < 2)
|
|
remove(b->str);
|
|
} while ((b = b->link) != list);
|
|
if (verbose)
|
|
fprintf(stderr, "\n");
|
|
}
|
|
}
|
|
|
|
/* strsave - return a saved copy of string str */
|
|
char *strsave(const char *str) {
|
|
return strcpy(alloc(strlen(str)+1), str);
|
|
}
|
|
|
|
/* stringf - format and return a string */
|
|
char *stringf(const char *fmt, ...) {
|
|
char buf[1024];
|
|
va_list ap;
|
|
int n;
|
|
|
|
va_start(ap, fmt);
|
|
n = vsprintf(buf, fmt, ap);
|
|
va_end(ap);
|
|
return strsave(buf);
|
|
}
|
|
|
|
/* suffix - if one of tails[0..n-1] holds a proper suffix of name, return its index */
|
|
int suffix(char *name, char *tails[], int n) {
|
|
int i, len = strlen(name);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
char *s = tails[i], *t;
|
|
for ( ; (t = strchr(s, ';')); s = t + 1) {
|
|
int m = t - s;
|
|
if (len > m && strncmp(&name[len-m], s, m) == 0)
|
|
return i;
|
|
}
|
|
if (*s) {
|
|
int m = strlen(s);
|
|
if (len > m && strncmp(&name[len-m], s, m) == 0)
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/* tempname - generate a temporary file name in tempdir with given suffix */
|
|
char *tempname(char *suffix) {
|
|
static int n;
|
|
char *name = stringf("%s/lcc%d%d%s", tempdir, getpid(), n++, suffix);
|
|
|
|
if (strstr(com[1], "win32") != NULL)
|
|
name = replace(name, '/', '\\');
|
|
rmlist = append(name, rmlist);
|
|
return name;
|
|
}
|