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| author | Pasha <pasha@member.fsf.org> | 2024-02-20 18:49:50 +0000 |
|---|---|---|
| committer | Pasha <pasha@member.fsf.org> | 2024-02-20 18:49:50 +0000 |
| commit | 5e0b8d508ed51004bd836384293be00950ee62c9 (patch) | |
| tree | e3f16b1aa8b7177032ce3ec429fbad2b1d92a876 /kern/cpu_number.h | |
| download | gnumach-riscv-5e0b8d508ed51004bd836384293be00950ee62c9.tar.gz gnumach-riscv-5e0b8d508ed51004bd836384293be00950ee62c9.tar.bz2 | |
init gnumach copy
Diffstat (limited to 'kern/cpu_number.h')
| -rw-r--r-- | kern/cpu_number.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/kern/cpu_number.h b/kern/cpu_number.h new file mode 100644 index 0000000..1abe3db --- /dev/null +++ b/kern/cpu_number.h @@ -0,0 +1,47 @@ +/* + * 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. + */ + +#ifndef _KERN_CPU_NUMBER_H_ +#define _KERN_CPU_NUMBER_H_ + +#include <machine/cpu_number.h> + +/* + * Definitions for cpu identification in multi-processors. + */ + +extern int master_cpu; /* 'master' processor - keeps time */ + +#if (NCPUS == 1) + /* cpu number is always 0 on a single processor system */ +#define cpu_number() (0) +#define cpu_number_slow() (0) + +#endif /* NCPUS == 1 */ + +#define CPU_L1_SIZE (1 << CPU_L1_SHIFT) + +#endif /* _KERN_CPU_NUMBER_H_ */ |