1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/*
* Mach Operating System
* Copyright (c) 1991,1990 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.
*/
/*
* Machine-dependent definitions for cpu identification.
*
*/
#ifndef _I386_CPU_NUMBER_H_
#define _I386_CPU_NUMBER_H_
#if NCPUS > 1
/* More-specific code must define cpu_number() and CPU_NUMBER. */
#ifdef __i386__
#define CX(addr, reg) addr(,reg,4)
#endif
#ifdef __x86_64__
#define CX(addr, reg) addr(,reg,8)
#endif
/* CPU_NUMBER(%ebx) will _not_ work! */
#define CPU_NUMBER(reg) \
cli ;\
pushl %ebx ;\
pushl %eax ;\
call EXT(cpu_number) ;\
movl %eax, %ebx ;\
popl %eax ;\
movl %ebx, reg ;\
popl %ebx
#else /* NCPUS == 1 */
#define CPU_NUMBER(reg)
#define CX(addr,reg) addr
#endif /* NCPUS == 1 */
#ifndef __ASSEMBLER__
#include "kern/cpu_number.h"
int cpu_number();
#endif
#endif /* _I386_CPU_NUMBER_H_ */
|
