source: bootcd/isolinux/syslinux-6.03/com32/lib/exit.c

/* ----------------------------------------------------------------------- *
 *
 *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
 *
 *   Permission is hereby granted, free of charge, to any person
 *   obtaining a copy of this software and associated documentation
 *   files (the "Software"), to deal in the Software without
 *   restriction, including without limitation the rights to use,
 *   copy, modify, merge, publish, distribute, sublicense, and/or
 *   sell copies of the Software, and to permit persons to whom
 *   the Software is furnished to do so, subject to the following
 *   conditions:
 *
 *   The above copyright notice and this permission notice shall
 *   be included in all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *   OTHER DEALINGS IN THE SOFTWARE.
 *
 * ----------------------------------------------------------------------- */

/*
 * exit.c
 *
 * The regular exit
 */

#include <sys/module.h>
#include <stdlib.h>
#include <unistd.h>
#include "atexit.h"

__noreturn exit(int rv)
{
        struct atexit *ap;

    for (ap = __syslinux_current->u.x.atexit_list; ap; ap = ap->next) {
        ap->fctn(rv, ap->arg);  /* This assumes extra args are harmless */
    }

    _exit(rv);
}    

__noreturn _Exit(int rv)
{
    _exit(rv);
}

__noreturn _exit(int rv)
{
    longjmp(__syslinux_current->u.x.process_exit, (uint8_t)rv+1);
}