1/* $NetBSD: cpu.h,v 1.60 2012/01/21 16:48:56 chs Exp $ */
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)cpu.h 5.4 (Berkeley) 5/9/91
35 */
36
37#ifndef _AMD64_CPU_H_
38#define _AMD64_CPU_H_
39
40#ifdef __x86_64__
41
42#include <x86/cpu.h>
43
44#ifdef _KERNEL
45
46#if defined(__GNUC__) && !defined(_MODULE)
47static struct cpu_info *x86_curcpu(void);
48static lwp_t *x86_curlwp(void);
49
50__inline static struct cpu_info * __unused
51x86_curcpu(void)
52{
53 struct cpu_info *ci;
54
55 __asm volatile("movq %%gs:%1, %0" :
56 "=r" (ci) :
57 "m"
58 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self)));
59 return ci;
60}
61
62__inline static lwp_t * __unused __attribute__ ((const))
63x86_curlwp(void)
64{
65 lwp_t *l;
66
67 __asm volatile("movq %%gs:%1, %0" :
68 "=r" (l) :
69 "m"
70 (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp)));
71 return l;
72}
73
74__inline static void __unused
75cpu_set_curpri(int pri)
76{
77
78 __asm volatile(
79 "movl %1, %%gs:%0" :
80 "=m" (*(struct cpu_info *)offsetof(struct cpu_info, ci_schedstate.spc_curpriority)) :
81 "r" (pri)
82 );
83}
84#endif /* __GNUC__ && !_MODULE */
85
86#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_tf.tf_cs, \
87 (frame)->cf_if.if_tf.tf_rflags)
88#define CLKF_PC(frame) ((frame)->cf_if.if_tf.tf_rip)
89#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0)
90#define LWP_PC(l) ((l)->l_md.md_regs->tf_rip)
91
92void *cpu_uarea_alloc(bool);
93bool cpu_uarea_free(void *);
94
95#endif /* _KERNEL */
96
97#else /* __x86_64__ */
98
99#include <i386/cpu.h>
100
101#endif /* __x86_64__ */
102
103#endif /* !_AMD64_CPU_H_ */
104