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Diffstat (limited to 'kern/macro_help.h')
| -rw-r--r-- | kern/macro_help.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/kern/macro_help.h b/kern/macro_help.h new file mode 100644 index 0000000..e13b01d --- /dev/null +++ b/kern/macro_help.h @@ -0,0 +1,55 @@ +/* + * Mach Operating System + * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University + * All Rights Reserved. + * + * Permission to use, copy, modify and distribute this software and its + * documentation is hereby granted, provided that both the copyright + * notice and this permission notice appear in all copies of the + * software, derivative works or modified versions, and any portions + * thereof, and that both notices appear in supporting documentation. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ +/* + * File: kern/macro_help.h + * + * Provide help in making lint-free macro routines + * + */ + +#ifndef _KERN_MACRO_HELP_H_ +#define _KERN_MACRO_HELP_H_ + +#if !defined(MACRO_BEGIN) + +#include <mach/boolean.h> + +#ifdef lint +boolean_t NEVER; +boolean_t ALWAYS; +#else /* lint */ +#define NEVER FALSE +#define ALWAYS TRUE +#endif /* lint */ + +#define MACRO_BEGIN do { +#define MACRO_END } while (NEVER) + +#define MACRO_RETURN if (ALWAYS) return + +#endif /* !MACRO_BEGIN */ + +#endif /* _KERN_MACRO_HELP_H_ */ |