ack/lang/cem/cemcom/cem.c
1986-12-08 08:58:21 +00:00

763 lines
14 KiB
C

/* $Header$ */
/*
Driver for the CEMCOM compiler: works like /bin/cc and accepts
most of the options accepted by /bin/cc and /usr/em/bin/ack.
Date written: dec 4, 1985
Adapted for 68000 (Aug 19, 1986)
Merged the vax and mantra versions (Nov 10, 1986)
Author: Erik Baalbergen
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <signal.h>
#define MAXARGC 256 /* maximum number of arguments allowed in a list */
#define USTR_SIZE 1024 /* maximum length of string variable */
struct arglist {
int al_argc;
char *al_argv[MAXARGC];
};
/* some system-dependent variables */
char *PP = "/lib/cpp";
char *CEM = "/usr/em/lib/em_cemcom";
char *ENCODE = "/usr/em/lib/em_encode";
char *DECODE = "/usr/em/lib/em_decode";
char *OPT = "/usr/em/lib/em_opt";
char *SHELL = "/bin/sh";
#ifndef MANTRA
char *CG = "/usr/em/lib/vax4/cg";
char *AS = "/bin/as";
char *AS_FIX = "/user1/erikb/bin/mcomm";
char *LD = "/bin/ld";
char *LIBDIR = "/user1/cem/lib";
char *V_FLAG = "-Vs2.2w4.4i4.4l4.4f4.4d8.4p4.4";
#else MANTRA
char *CG = "/usr/em/lib/m68k2/cg";
char *AS = "/usr/em/lib/m68k2/as";
char *LD = "/usr/em/lib/em_led";
char *CV = "/usr/em/lib/m68k2/cv";
char *LIBDIR = "/usr/em/lib/m68k2";
char *V_FLAG = "-Vs2.2w2.2i2.2l4.2f4.2d8.2p4.2";
#endif MANTRA
struct arglist LD_HEAD = {
2,
{
#ifndef MANTRA
"/usr/em/lib/vax4/head_em",
"/usr/em/lib/vax4/head_cc"
#else MANTRA
"/usr/em/lib/m68k2/head_em",
"/usr/em/lib/m68k2/head_cc"
#endif MANTRA
}
};
struct arglist LD_TAIL = {
#ifndef MANTRA
4,
{
"/user1/cem/lib/libc.a",
"/user1/cem/lib/stb.o",
"/usr/em/lib/vax4/tail_mon",
"/usr/em/lib/vax4/tail_em"
}
#else MANTRA
7,
{
"/usr/em/lib/m68k2/tail_cc.1s",
"/usr/em/lib/m68k2/tail_cc.2g",
"/usr/em/lib/m68k2/tail_cem",
"/usr/em/lib/m68k2/tail_fp.a",
"/usr/em/lib/m68k2/tail_em.rt",
"/usr/em/lib/m68k2/tail_mon",
"/usr/em/lib/m68k2/end_em"
}
#endif MANTRA
};
char *o_FILE = "a.out";
#ifdef MANTRA
char *cv_FILE = "cv.out";
#endif MANTRA
#define remove(str) (((FLAG(t) == 0) && unlink(str)), (str)[0] = '\0')
#define cleanup(str) (str && remove(str))
#define mkname(dst, s1, s2) mkstr(dst, (s1), (s2), 0)
#define init(al) (al)->al_argc = 1
#define library(nm) \
mkstr(alloc((unsigned int)strlen(nm) + strlen(LIBDIR) + 7), \
LIBDIR, "/lib", nm, ".a", 0)
struct arglist SRCFILES, LDFILES, GEN_LDFILES, PP_FLAGS, CEM_FLAGS,
OPT_FLAGS, DECODE_FLAGS, ENCODE_FLAGS, CG_FLAGS, AS_FLAGS,
O_FLAGS, DEBUG_FLAGS, CALL_VEC;
#ifndef MANTRA
struct arglist LD_FLAGS;
#else MANTRA
struct arglist LD_FLAGS = {
5,
{
"-b0:0x80000",
"-a0:2",
"-a1:2",
"-a2:2",
"-a3:2"
}
};
struct arglist CV_FLAGS;
int Nc_flag = 0;
#endif MANTRA
/* option naming */
#define NAME(chr) chr
#define FLAG(chr) NAME(chr)_flag
int E_flag, P_flag, S_flag, c_flag, e_flag, k_flag,
m_flag, o_flag, t_flag, v_flag;
/* various passes */
struct prog {
char *p_name;
char **p_task;
struct arglist *p_flags;
} ProgParts[] = {
{ "cpp", &PP, &PP_FLAGS },
{ "cem", &CEM, &CEM_FLAGS },
{ "opt", &OPT, &OPT_FLAGS },
{ "decode", &DECODE, &DECODE_FLAGS },
{ "encode", &ENCODE, &ENCODE_FLAGS },
{ "be", &CG, &CG_FLAGS },
{ "cg", &CG, &CG_FLAGS },
{ "as", &AS, &AS_FLAGS },
{ "ld", &LD, &LD_FLAGS },
#ifdef MANTRA
{ "cv", &CV, &CV_FLAGS },
#endif MANTRA
{ 0, 0, 0 }
};
/* various forward declarations */
int trap();
char *mkstr();
char *alloc();
long sizeof_file();
/* various globals */
char *ProgCall = 0;
int debug = 0;
int exec = 1;
int RET_CODE = 0;
main(argc, argv)
char *argv[];
{
char *str, **argvec, *file, *ldfile = 0;
int count, ext;
char Nfile[USTR_SIZE], kfile[USTR_SIZE], sfile[USTR_SIZE],
mfile[USTR_SIZE], ofile[USTR_SIZE], BASE[USTR_SIZE];
register struct arglist *call = &CALL_VEC;
set_traps(trap);
ProgCall = *argv++;
while (--argc > 0) {
if (*(str = *argv++) != '-') {
append(&SRCFILES, str);
continue;
}
switch (str[1]) {
case '-':
switch (str[2]) {
case 'C':
case 'E':
case 'P':
FLAG(E) = 1;
append(&PP_FLAGS, str);
PP = CEM;
FLAG(P) = (str[2] == 'P');
break;
default:
append(&DEBUG_FLAGS, str);
break;
}
break;
case 'B':
PP = CEM = &str[2];
break;
case 'C':
case 'E':
case 'P':
FLAG(E) = 1;
append(&PP_FLAGS, str);
FLAG(P) = (str[1] == 'P');
break;
case 'c':
if (str[2] == '.') {
switch (str[3]) {
case 's':
FLAG(S) = 1;
break;
case 'k':
FLAG(k) = 1;
break;
case 'o':
FLAG(c) = 1;
break;
case 'm':
FLAG(m) = 1;
break;
case 'e':
FLAG(e) = 1;
break;
default:
bad_option(str);
}
}
else
if (str[2] == '\0')
FLAG(c) = 1;
else
bad_option(str);
break;
case 'D':
case 'I':
case 'U':
append(&PP_FLAGS, str);
break;
case 'k':
FLAG(k) = 1;
break;
case 'l':
if (str[2] == '\0') /* no standard libraries */
LD_HEAD.al_argc = LD_TAIL.al_argc = 0;
else /* use library from library directory */
append(&SRCFILES, library(&str[2]));
break;
case 'L': /* change default library directory */
LIBDIR = &str[2];
break;
case 'm':
FLAG(m) = 1;
break;
#ifdef MANTRA
case 'N':
switch (str[2]) {
case 'c': /* no a.out conversion */
Nc_flag = 1;
break;
case 'l': /* no default options to led */
LD_FLAGS.al_argc = 0;
break;
default:
bad_option(str);
}
break;
#endif MANTRA
case 'o':
FLAG(o) = 1;
if (argc-- < 0)
bad_option(str);
else
o_FILE = *argv++;
break;
case 'O':
append(&O_FLAGS, "-O");
break;
case 'p':
append(&CEM_FLAGS, "-p");
break;
case 'R':
if (str[2] == '\0')
append(&CEM_FLAGS, str);
else
Roption(str);
break;
case 'S':
FLAG(S) = 1;
break;
case 't':
FLAG(t) = 1;
break;
case 'v': /* set debug switches */
FLAG(v) = 1;
switch (str[2]) {
case 'd':
debug = 1;
break;
case 'n': /* no execute */
exec = 0;
break;
case '\0':
break;
default:
bad_option(str);
}
break;
case 'V':
V_FLAG = str;
break;
default:
append(&LD_FLAGS, str);
}
}
if (debug) report("Note: debug output");
if (exec == 0)
report("Note: no execution");
count = SRCFILES.al_argc;
argvec = &(SRCFILES.al_argv[0]);
Nfile[0] = '\0';
while (count-- > 0) {
basename(file = *argvec++, BASE);
if (FLAG(E)) {
char ifile[USTR_SIZE];
init(call);
append(call, PP);
concat(call, &DEBUG_FLAGS);
concat(call, &PP_FLAGS);
append(call, file);
runvec(call, FLAG(P) ? mkname(ifile, BASE, ".i") : 0);
continue;
}
ext = extension(file);
/* .c to .k and .N */
if (ext == 'c' || ext == 'i') {
init(call);
append(call, CEM);
concat(call, &DEBUG_FLAGS);
append(call, V_FLAG);
concat(call, &CEM_FLAGS);
concat(call, &PP_FLAGS);
append(call, file);
append(call, mkname(kfile, BASE, ".k"));
append(call, mkname(Nfile, BASE, ".N"));
if (runvec(call, (char *)0)) {
file = kfile;
ext = 'k';
if (sizeof_file(Nfile) <= 0L)
remove(Nfile);
}
else {
remove(kfile);
remove(Nfile);
continue;
}
}
/* .e to .k */
if (ext == 'e') {
init(call);
append(call, ENCODE);
concat(call, &ENCODE_FLAGS);
append(call, file);
append(call, mkname(kfile, BASE, ".k"));
if (runvec(call, (char *)0) == 0)
continue;
file = kfile;
ext = 'k';
}
if (FLAG(k))
continue;
/* decode .k or .m */
if (FLAG(e) && (ext == 'k' || ext == 'm')) {
char efile[USTR_SIZE];
init(call);
append(call, DECODE);
concat(call, &DECODE_FLAGS);
append(call, file);
append(call, mkname(efile, BASE, ".e"));
runvec(call, (char *)0);
cleanup(kfile);
continue;
}
/* .k to .m */
if (ext == 'k') {
init(call);
append(call, OPT);
concat(call, &OPT_FLAGS);
append(call, file);
if (runvec(call, mkname(mfile, BASE, ".m")) == 0)
continue;
file = mfile;
ext = 'm';
cleanup(kfile);
}
if (FLAG(m))
continue;
/* .m to .s */
if (ext == 'm') {
init(call);
append(call, CG);
concat(call, &CG_FLAGS);
append(call, file);
append(call, mkname(sfile, BASE, ".s"));
if (runvec(call, (char *)0) == 0)
continue;
if (Nfile[0] != '\0') {
#ifndef MANTRA
init(call);
append(call, AS_FIX);
append(call, Nfile);
append(call, sfile);
runvec(call, (char *)0);
#endif MANTRA
remove(Nfile);
}
cleanup(mfile);
file = sfile;
ext = 's';
}
if (FLAG(S))
continue;
/* .s to .o */
if (ext == 's') {
ldfile = FLAG(c) ?
ofile :
alloc((unsigned)strlen(BASE) + 3);
init(call);
append(call, AS);
concat(call, &AS_FLAGS);
#ifdef MANTRA
append(call, "-");
#endif MANTRA
append(call, "-o");
append(call, mkname(ldfile, BASE, ".o"));
append(call, file);
if (runvec(call, (char *)0) == 0)
continue;
file = ldfile;
ext = 'o';
cleanup(sfile);
}
if (FLAG(c))
continue;
append(&LDFILES, file);
if (ldfile) {
append(&GEN_LDFILES, ldfile);
ldfile = 0;
}
}
/* *.o to a.out */
if (RET_CODE == 0 && LDFILES.al_argc > 0) {
init(call);
append(call, LD);
concat(call, &LD_FLAGS);
append(call, "-o");
#ifndef MANTRA
append(call, o_FILE);
#else MANTRA
append(call, Nc_flag ? o_FILE : cv_FILE);
#endif MANTRA
concat(call, &LD_HEAD);
concat(call, &LDFILES);
concat(call, &LD_TAIL);
if (runvec(call, (char *)0)) {
register i = GEN_LDFILES.al_argc;
while (i-- > 0)
remove(GEN_LDFILES.al_argv[i]);
#ifdef MANTRA
/* convert to local a.out format */
if (Nc_flag == 0) {
init(call);
append(call, CV);
concat(call, &CV_FLAGS);
append(call, cv_FILE);
append(call, o_FILE);
if (runvec(call, (char *)0))
remove(cv_FILE);
}
#endif MANTRA
}
}
exit(RET_CODE);
}
#define BUFSIZE (USTR_SIZE * MAXARGC)
char alloc_buf[BUFSIZE];
char *
alloc(u)
unsigned u;
{
static char *bufptr = &alloc_buf[0];
register char *p = bufptr;
if ((bufptr += u) >= &alloc_buf[BUFSIZE])
panic("no space");
return p;
}
append(al, arg)
register struct arglist *al;
char *arg;
{
if (al->al_argc >= MAXARGC)
panic("argument list overflow");
al->al_argv[(al->al_argc)++] = arg;
}
concat(al1, al2)
struct arglist *al1, *al2;
{
register int i = al2->al_argc;
register char **p = &(al1->al_argv[al1->al_argc]);
register char **q = &(al2->al_argv[0]);
if ((al1->al_argc += i) >= MAXARGC)
panic("argument list overflow");
while (i-- > 0)
*p++ = *q++;
}
/* The next function is a dirty old one, taking a variable number of
arguments.
Take care that the last argument is a null-valued pointer!
*/
/*VARARGS1*/
char *
mkstr(dst, arg)
char *dst, *arg;
{
char **vec = (char **) &arg;
register char *p;
register char *q = dst;
while (p = *vec++) {
while (*q++ = *p++);
q--;
}
return dst;
}
Roption(str)
char *str; /* of the form "prog=/-arg" */
{
char *eq;
char *prog, *arg;
char bc;
char *cindex();
prog = &str[2];
if (eq = cindex(prog, '='))
bc = '=';
else
if (eq = cindex(prog, '-'))
bc = '-';
else {
bad_option(str);
return;
}
*eq++ = '\0';
if (arg = eq) {
char *opt = 0;
struct prog *pp = &ProgParts[0];
if (bc == '-')
opt = mkstr(alloc((unsigned)strlen(arg) + 2),
"-", arg, 0);
while (pp->p_name) {
if (strcmp(prog, pp->p_name) == 0) {
if (opt)
append(pp->p_flags, opt);
else
*(pp->p_task) = arg;
return;
}
pp++;
}
}
bad_option(str);
}
basename(str, dst)
char *str;
register char *dst;
{
register char *p1 = str;
register char *p2 = p1;
while (*p1)
if (*p1++ == '/')
p2 = p1;
p1--;
if (*--p1 == '.') {
*p1 = '\0';
while (*dst++ = *p2++) {}
*p1 = '.';
}
else
while (*dst++ = *p2++) {}
}
int
extension(fn)
register char *fn;
{
char c;
while (*fn++) {}
fn--;
c = *--fn;
return (*--fn == '.') ? c : 0;
}
long
sizeof_file(nm)
char *nm;
{
struct stat stbuf;
if (stat(nm, &stbuf) == 0)
return stbuf.st_size;
return -1;
}
char * sysmsg[] = {
0,
"Hangup",
"Interrupt",
"Quit",
"Illegal instruction",
"Trace/BPT trap",
"IOT trap",
"EMT trap",
"Floating exception",
"Killed",
"Bus error",
"Memory fault",
"Bad system call",
"Broken pipe",
"Alarm call",
"Terminated",
"Signal 16"
};
runvec(vec, outp)
struct arglist *vec;
char *outp;
{
int status, fd;
char *task = vec->al_argv[1];
vec->al_argv[vec->al_argc] = 0;
if (FLAG(v))
print_vec(vec);
if (exec == 0)
return 1;
if (fork() == 0) { /* start up the process */
extern int errno;
if (outp) { /* redirect standard output */
close(1);
if ((fd = creat(outp, 0666)) < 0)
panic("cannot create %s", outp);
if (fd != 1)
panic("illegal redirection");
}
if (debug) report("exec %s", task);
execv(task, &(vec->al_argv[1]));
/* not an a.out file, let's try it with the SHELL */
if (debug) report("try it with %s", SHELL);
if (errno == ENOEXEC) {
vec->al_argv[0] = SHELL;
execv(SHELL, &(vec->al_argv[0]));
}
/* failed, so ... */
panic("cannot execute %s", task);
exit(1);
}
else {
int loworder, highorder, sig;
wait(&status);
loworder = status & 0377;
highorder = (status >> 8) & 0377;
if (loworder == 0) {
if (highorder)
report("%s: exit status %d", task, highorder);
return highorder ? ((RET_CODE = 1), 0) : 1;
}
else {
sig = loworder & 0177;
if (sig == 0177)
report("%s: stopped by ptrace", task);
else
if (sysmsg[sig])
report("%s: %s%s", task, sysmsg[sig],
(loworder & 0200)
? " - core dumped"
: "");
RET_CODE = 1;
return 0;
}
}
/*NOTREACHED*/
}
bad_option(str)
char *str;
{
report("bad option %s", str);
}
/*VARARGS1*/
report(fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
char *fmt;
{
fprintf(stderr, "%s: ", ProgCall);
fprintf(stderr, fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
fprintf(stderr, "\n");
}
/*VARARGS1*/
panic(fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9)
char *fmt;
{
fprintf(stderr, "%s: ", ProgCall);
fprintf(stderr, fmt, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
fprintf(stderr, "\n");
exit(1);
}
set_traps(f)
int (*f)();
{
signal(SIGHUP, f);
signal(SIGINT, f);
signal(SIGQUIT, f);
signal(SIGALRM, f);
signal(SIGTERM, f);
}
/*ARGSUSED*/
trap(sig)
{
set_traps(SIG_IGN);
panic("Trapped");
}
print_vec(vec)
struct arglist *vec;
{
register i;
for (i = 1; i < vec->al_argc; i++)
printf("%s ", vec->al_argv[i]);
printf("\n");
}
char *
cindex(s, c)
char *s, c;
{
while (*s)
if (*s++ == c)
return s - 1;
return (char *) 0;
}