diff options
Diffstat (limited to 'sys/arch/mvme88k/include/cpu_number.h')
| -rw-r--r-- | sys/arch/mvme88k/include/cpu_number.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sys/arch/mvme88k/include/cpu_number.h b/sys/arch/mvme88k/include/cpu_number.h new file mode 100644 index 00000000000..e26ddfe6eb4 --- /dev/null +++ b/sys/arch/mvme88k/include/cpu_number.h @@ -0,0 +1,48 @@ +/* + * 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 +#include <machine/param.h> +extern unsigned number_cpus; +#define cpu_number() 0 + +#if 0 /* This seems to not work correctly. Hmm.... smurph */ +unsigned cpu_number(void); +static inline unsigned cpu_number(void) +{ + unsigned cpu; + extern int cputyp; + if (cputyp != CPU_188 || number_cpus == 1) return 0; + asm("ldcr %0, cr18" : "=r" (cpu)); + asm("clr %0, %0, 0<4>" : "=r" (cpu)); + return (cpu & 3); +} +#endif /* 0 */ +#endif /* KERNEL */ +#endif /* _M88K_CPU_NUMBER_ */ |