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) |
47 | static struct cpu_info *x86_curcpu(void); |
48 | static lwp_t *x86_curlwp(void); |
49 | |
50 | __inline static struct cpu_info * __unused |
51 | x86_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)) |
63 | x86_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 |
75 | cpu_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 | |
92 | void *cpu_uarea_alloc(bool); |
93 | bool 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 | |