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+/* unionwait.h -- definitions for using a `union wait' on systems without
+ one. */
+
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License as published by the Free
+ Software Foundation; either version 2, or (at your option) any later
+ version.
+
+ Bash is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with Bash; see the file COPYING. If not, write to the Free Software
+ Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#ifndef _UNIONWAIT_H
+#define _UNIONWAIT_H
+
+#if !defined (WORDS_BIGENDIAN)
+union wait
+ {
+ int w_status; /* used in syscall */
+
+ /* Terminated process status. */
+ struct
+ {
+ unsigned short
+ w_Termsig : 7, /* termination signal */
+ w_Coredump : 1, /* core dump indicator */
+ w_Retcode : 8, /* exit code if w_termsig==0 */
+ w_Fill1 : 16; /* high 16 bits unused */
+ } w_T;
+
+ /* Stopped process status. Returned
+ only for traced children unless requested
+ with the WUNTRACED option bit. */
+ struct
+ {
+ unsigned short
+ w_Stopval : 8, /* == W_STOPPED if stopped */
+ w_Stopsig : 8, /* actually zero on XENIX */
+ w_Fill2 : 16; /* high 16 bits unused */
+ } w_S;
+ };
+
+#else /* WORDS_BIGENDIAN */
+
+/* This is for big-endian machines like the IBM RT, HP 9000, or Sun-3 */
+
+union wait
+ {
+ int w_status; /* used in syscall */
+
+ /* Terminated process status. */
+ struct
+ {
+ unsigned short w_Fill1 : 16; /* high 16 bits unused */
+ unsigned w_Retcode : 8; /* exit code if w_termsig==0 */
+ unsigned w_Coredump : 1; /* core dump indicator */
+ unsigned w_Termsig : 7; /* termination signal */
+ } w_T;
+
+ /* Stopped process status. Returned
+ only for traced children unless requested
+ with the WUNTRACED option bit. */
+ struct
+ {
+ unsigned short w_Fill2 : 16; /* high 16 bits unused */
+ unsigned w_Stopsig : 8; /* signal that stopped us */
+ unsigned w_Stopval : 8; /* == W_STOPPED if stopped */
+ } w_S;
+ };
+
+#endif /* WORDS_BIGENDIAN */
+
+#define w_termsig w_T.w_Termsig
+#define w_coredump w_T.w_Coredump
+#define w_retcode w_T.w_Retcode
+#define w_stopval w_S.w_Stopval
+#define w_stopsig w_S.w_Stopsig
+
+#define WSTOPPED 0177
+#define WIFSTOPPED(x) ((x).w_stopval == WSTOPPED)
+#define WIFEXITED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig == 0)
+#define WIFSIGNALED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig != 0)
+
+#define WTERMSIG(x) ((x).w_termsig)
+#define WSTOPSIG(x) ((x).w_stopsig)
+#define WEXITSTATUS(x) ((x).w_retcode)
+#define WIFCORED(x) ((x).w_coredump)
+
+#endif /* _UNIONWAIT_H */