88207db638
I made a syntax error in some .e file, and em_encode dumped core because a 64-bit pointer didn't fit in a 32-bit int. Now use stdarg to pass pointers to error() and fatal(). Stop using the number of errors as the exit status. Many systems use only the low 8 bits of the exit status, so 256 errors would become 0. Also change modules/src/print to accept const char *buf
103 lines
2 KiB
C
103 lines
2 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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#ifndef NORCSID
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static char rcsid[] = "$Id$";
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#endif
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/* This program converts either human-readable or compact EM
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assembly code to calls of the procedure-interface.
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It must be linked with two libraries:
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- a library to read EM code, according to read_em(3)
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- a library implementing the em_code(3) interface.
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Thus, this program could serve as an EM_encoder, an
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EM_decoder, or some code generator, depending on how it is
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linked.
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include "system.h"
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#include "print.h"
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#include "em_pseu.h"
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#include "em_mnem.h"
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#include "em_spec.h"
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#include "em_flag.h"
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#include "em_ptyp.h"
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#include "em.h"
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#include "em_comp.h"
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char *filename; /* Name of input file */
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int errors; /* Number of errors */
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extern char *C_error;
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void error(const char *, ...);
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void fatal(const char *, ...);
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int
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main(int argc, char **argv)
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{
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struct e_instr buf;
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register struct e_instr *p = &buf;
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if (argc >= 2) {
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filename = argv[1];
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}
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else filename = 0;
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if (!EM_open(filename)) {
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fatal(EM_error);
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}
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EM_getinstr(p);
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C_init((arith) EM_wordsize, (arith) EM_pointersize);
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if (argc >= 3) {
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if (!C_open(argv[2])) {
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fatal("C_open failed");
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}
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}
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else if (!C_open( (char *) 0)) fatal("C_open failed");
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C_magic();
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while (p->em_type != EM_EOF) {
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if (p->em_type == EM_FATAL) {
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fatal("%s", EM_error);
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}
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if (EM_error) {
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error("%s", EM_error);
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}
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if (p->em_type != EM_ERROR && !C_out(p)) {
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error("%s", C_error);
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}
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EM_getinstr(p);
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}
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C_close();
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EM_close();
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exit(errors ? 1 : 0);
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}
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/* VARARGS */
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void
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error(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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fprint(STDERR,
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"%s, line %d: ",
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filename ? filename : "standard input",
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EM_lineno);
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doprnt(STDERR, s, ap);
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fprint(STDERR, "\n");
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errors++;
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va_end(ap);
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}
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/* VARARGS */
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void
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fatal(const char *s, ...)
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{
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va_list ap;
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va_start(ap, s);
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if (C_busy()) C_close();
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error(s, ap);
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exit(1);
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}
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