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/* $OpenBSD: cpu_number.h,v 1.8 2001/12/16 23:49:46 miod Exp $ */
/*
* Mach Operating System
* Copyright (c) 1993-1992 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.
*/
#ifndef _M88K_CPU_NUMBER_
#define _M88K_CPU_NUMBER_
#ifdef _KERNEL
#ifndef _LOCORE
#include <machine/param.h>
extern unsigned number_cpus;
static unsigned cpu_number __P((void));
static __inline__ unsigned cpu_number(void)
{
register unsigned cpu;
if (cputyp != CPU_188 || number_cpus == 1) return 0;
__asm__ ("ldcr %0, cr18" : "=r" (cpu));
return (cpu & 3);
}
#endif /* _LOCORE */
#endif /* _KERNEL */
#endif /* _M88K_CPU_NUMBER_ */
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