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
|
/*
* 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_
#include <imps/apic.h>
#if NCPUS > 1
/* More-specific code must define cpu_number() and CPU_NUMBER. */
#define CX(addr, reg) addr(,reg,4)
#else /* NCPUS == 1 */
#define CX(addr,reg) addr
#endif /* NCPUS == 1 */
#ifndef __ASSEMBLER__
#include <kern/cpu_number.h>
#else
/*TODO: call to real cpu_number()*/
#define CPU_NUMBER(reg) \
movl lapic, reg; \
test reg, reg; \
jz 0f; \
movl 0x20(reg), reg; \
shrl $24, reg; \
movl apic2kernel(,reg,4), reg; \
0:
#endif
#endif
|
