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#include <stdio.h>
#include <string.h>
#ifndef NO_UNISTD_H
#include <sys/unistd.h>
#endif
/* A simple glue file for embedded targets so we can get the real exit
status from the program. This assumes we're using GNU ld and can use
the -wrap option, and that write(1, ...) does something useful. */
/* There is a bunch of weird cruft with #ifdef UNDERSCORES. This is needed
because currently GNU ld doesn't deal well with a.out targets and
the -wrap option. When GNU ld is fixed, this should definitely be
removed. Note that we actually wrap __exit, not _exit on a target
that has UNDERSCORES defined. On non-UNDERSCORE targets, we
wrap _exit separately; it's actually a different function. */
#ifdef WRAP_M68K_AOUT
#define REAL_EXIT(code) asm ( "trap %0" : : "i" (0) );
#define REAL_ABORT() REAL_EXIT(6)
#define ORIG_EXIT _exit
#define ORIG_ABORT abort
#else
#ifdef UNDERSCORES
#define REAL_EXIT _real___exit
#define REAL_MAIN _real__main
#define REAL_ABORT _real__abort
#define ORIG_EXIT _wrap___exit
#define ORIG_ABORT _wrap__abort
#define ORIG_MAIN _wrap__main
#else
#define REAL_EXIT __real_exit
#ifndef VXWORKS
#define REAL__EXIT __real__exit
#endif
#define REAL_MAIN __real_main
#define REAL_ABORT __real_abort
#define ORIG_EXIT __wrap_exit
#define ORIG__EXIT __wrap__exit
#define ORIG_ABORT __wrap_abort
#define ORIG_MAIN __wrap_main
#endif
extern void abort (void);
extern void exit (int);
#endif
#ifdef REAL_MAIN
extern void REAL_EXIT ();
extern void REAL_ABORT ();
extern int REAL_MAIN (int argc, char **argv, char **envp);
#endif
#ifdef REAL__EXIT
extern void REAL__EXIT ();
#endif
static int done_exit_message = 0;
int ___constval = 1;
#ifdef VXWORKS
static void __runexit();
#endif
static char *
write_int(val, ptr)
int val;
char *ptr;
{
char c;
if (val<0) {
*(ptr++) = '-';
val = -val;
}
if (val>9) {
ptr = write_int (val/10, ptr);
}
c = (val%10)+'0';
*(ptr++) = c;
return ptr;
}
void
ORIG_EXIT (code)
int code;
{
char buf[30];
char *ptr;
#ifdef VXWORKS
__runexit ();
#endif
strcpy (buf, "\n*** EXIT code ");
ptr = write_int (code, buf + strlen(buf));
*(ptr++) = '\n';
write (1, buf, ptr-buf);
done_exit_message = 1;
REAL_EXIT (code);
while (___constval);
}
#ifdef ORIG__EXIT
void
ORIG__EXIT (code)
int code;
{
char buf[30];
char *ptr;
/* Since exit may call _exit, we need to avoid a second message. */
if (! done_exit_message)
{
strcpy (buf, "\n*** EXIT code ");
ptr = write_int (code, buf + strlen(buf));
*(ptr++) = '\n';
write (1, buf, ptr-buf);
}
REAL__EXIT (code);
while (___constval);
}
#endif
void
ORIG_ABORT ()
{
write (1, "\n*** EXIT code 4242\n", 20);
REAL_ABORT ();
while (___constval);
abort ();
}
#ifdef REAL_MAIN
int
ORIG_MAIN (argc, argv, envp)
int argc;
char **argv;
char **envp;
{
#ifdef WRAP_FILE_ARGS
extern int __argc;
extern char *__args[];
exit (REAL_MAIN (__argc,__args,envp));
#else
exit (REAL_MAIN (argc, argv, envp));
#endif
while (___constval);
}
#endif
#ifdef VXWORKS
void
_exit (status)
int status;
{
REAL_EXIT (status);
}
typedef (*PFV)(void);
static PFV __list[32];
static int __listcnt = 0;
static int __running = 0;
int
atexit (PFV func)
{
__list[__listcnt++] = func;
}
static void
__runexit ()
{
int i;
if (__running++)
return;
for (i = 0; i < __listcnt; i++)
__list[i]();
__running = 0;
}
#endif
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