usr/src/usr.sbin/amd/include/uwait.h

/*
 * Copyright (c) 1989 Jan-Simon Pendry
 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
 * Copyright (c) 1989 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry at Imperial College, London.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)uwait.h     5.4 (Berkeley) %G%
 *
 * $Id: uwait.h,v 5.2.2.1 1992/02/09 15:10:01 jsp beta $
 *
 */

#if defined(mc68k) || defined(mc68000) || defined(mc68020) || defined(sparc) || defined(hp9000s300) || defined(hp9000s800)
#define BITS_BIGENDIAN
#endif
#if defined(vax) || defined(i386)
#define BITS_LITTLENDIAN
#endif
#if !defined BITS_BIGENDIAN && !defined BITS_LITTLENDIAN
 #error Do not know my byte ordering
#endif

/*
 * Structure of the information in the first word returned by both
 * wait and wait3.  If w_stopval==WSTOPPED, then the second structure
 * describes the information returned, else the first.  See WUNTRACED below.
 */
union wait      {
        int     w_status;               /* used in syscall */
        /*
         * Terminated process status.
         */
        struct {
#ifdef BITS_LITTLENDIAN
                unsigned short  w_Termsig:7;    /* termination signal */
                unsigned short  w_Coredump:1;   /* core dump indicator */
                unsigned short  w_Retcode:8;    /* exit code if w_termsig==0 */
#endif
#ifdef BITS_BIGENDIAN
                unsigned short  w_Fill1:16;     /* high 16 bits unused */
                unsigned short  w_Retcode:8;    /* exit code if w_termsig==0 */
                unsigned short  w_Coredump:1;   /* core dump indicator */
                unsigned short  w_Termsig:7;    /* termination signal */
#endif
        } w_U;
};
#define w_termsig       w_U.w_Termsig
#define w_coredump      w_U.w_Coredump
#define w_retcode       w_U.w_Retcode

#define WIFSIGNALED(x)  ((x).w_termsig != 0)
#define WIFEXITED(x)    ((x).w_termsig == 0)