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linux-next/arch/um/include/choose-mode.h
Jeff Dike 44700a4469 [PATCH] uml: better diagnostics for broken configs
Produce a compile-time error if both MODE_SKAS and MODE_TT are disabled.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:33:47 -08:00

39 lines
872 B
C

/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __CHOOSE_MODE_H__
#define __CHOOSE_MODE_H__
#include "uml-config.h"
#if defined(UML_CONFIG_MODE_TT) && defined(UML_CONFIG_MODE_SKAS)
#define CHOOSE_MODE(tt, skas) (mode_tt ? (tt) : (skas))
extern int mode_tt;
static inline void *__choose_mode(void *tt, void *skas) {
return mode_tt ? tt : skas;
}
#define __CHOOSE_MODE(tt, skas) (*( (typeof(tt) *) __choose_mode(&(tt), &(skas))))
#elif defined(UML_CONFIG_MODE_SKAS)
#define CHOOSE_MODE(tt, skas) (skas)
#elif defined(UML_CONFIG_MODE_TT)
#define CHOOSE_MODE(tt, skas) (tt)
#else
#error CONFIG_MODE_SKAS and CONFIG_MODE_TT are both disabled
#endif
#define CHOOSE_MODE_PROC(tt, skas, args...) \
CHOOSE_MODE(tt(args), skas(args))
#ifndef __CHOOSE_MODE
#define __CHOOSE_MODE(tt, skas) CHOOSE_MODE(tt, skas)
#endif
#endif