kernel: Make SMP support default (and non-optional).
[dragonfly.git] / sys / cpu / x86_64 / include / profile.h
CommitLineData
fc3f9779
SS
1/*
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)profile.h 8.1 (Berkeley) 6/11/93
34 * $FreeBSD: src/sys/amd64/include/profile.h,v 1.33 2004/01/06 20:36:21 nectar Exp $
fc3f9779
SS
35 */
36
37#ifndef _CPU_PROFILE_H_
38#define _CPU_PROFILE_H_
39
40#ifdef _KERNEL
41
42/*
43 * Config generates something to tell the compiler to align functions on 16
44 * byte boundaries. A strict alignment is good for keeping the tables small.
45 */
46#define FUNCTION_ALIGNMENT 16
47
48/*
49 * The kernel uses assembler stubs instead of unportable inlines.
50 * This is mainly to save a little time when profiling is not enabled,
51 * which is the usual case for the kernel.
52 */
53#define _MCOUNT_DECL void mcount
54#define MCOUNT
55
56#ifdef GUPROF
57#define CALIB_SCALE 1000
58#define KCOUNT(p,index) ((p)->kcount[(index) \
59 / (HISTFRACTION * sizeof(HISTCOUNTER))])
60#define MCOUNT_DECL(s)
61#define MCOUNT_ENTER(s)
62#define MCOUNT_EXIT(s)
63#define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc)
64#else
65#define MCOUNT_DECL(s) u_long s;
fc3f9779
SS
66extern int mcount_lock;
67#define MCOUNT_ENTER(s) { s = read_rflags(); disable_intr(); \
68 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
69 /* nothing */ ; }
70#define MCOUNT_EXIT(s) { atomic_store_rel_int(&mcount_lock, 0); \
71 write_rflags(s); }
fc3f9779
SS
72#endif /* GUPROF */
73
74#else /* !_KERNEL */
75
76#define FUNCTION_ALIGNMENT 4
77
341355d2
SW
78#define _MCOUNT_DECL \
79static void _mcount(uintfptr_t frompc, uintfptr_t selfpc) __used; \
80static void _mcount
fc3f9779
SS
81
82#ifdef __GNUC__
341355d2
SW
83#define MCOUNT __asm(" \n\
84 .text \n\
85 .p2align 4,0x90 \n\
86 .globl .mcount \n\
87 .type .mcount,@function \n\
88.mcount: \n\
89 pushq %rdi \n\
90 pushq %rsi \n\
91 pushq %rdx \n\
92 pushq %rcx \n\
93 pushq %r8 \n\
94 pushq %r9 \n\
95 pushq %rax \n\
96 movq 8(%rbp),%rdi \n\
97 movq 7*8(%rsp),%rsi \n\
98 call _mcount \n\
99 popq %rax \n\
100 popq %r9 \n\
101 popq %r8 \n\
102 popq %rcx \n\
103 popq %rdx \n\
104 popq %rsi \n\
105 popq %rdi \n\
106 ret \n\
107 .size .mcount, . - .mcount");
fc3f9779
SS
108#else /* __GNUC__ */
109#define MCOUNT \
110void \
111mcount() \
112{ \
113}
114#endif /* __GNUC__ */
115
116typedef unsigned long uintfptr_t;
117
118#endif /* _KERNEL */
119
120/*
121 * An unsigned integral type that can hold non-negative difference between
122 * function pointers.
123 */
124typedef u_int fptrdiff_t;
125
126#ifdef _KERNEL
127
128void mcount(uintfptr_t frompc, uintfptr_t selfpc);
129void kmupetext(uintfptr_t nhighpc);
130
131#ifdef GUPROF
132struct gmonparam;
133
134void nullfunc_loop_profiled(void);
135void nullfunc_profiled(void);
136void startguprof(struct gmonparam *p);
137void stopguprof(struct gmonparam *p);
138#else
139#define startguprof(p)
140#define stopguprof(p)
141#endif /* GUPROF */
142
143#else /* !_KERNEL */
144
145#include <sys/cdefs.h>
146
147__BEGIN_DECLS
148#ifdef __GNUC__
149void mcount(void) __asm(".mcount");
150#endif
151__END_DECLS
152
153#endif /* _KERNEL */
154
155#ifdef GUPROF
156/* XXX doesn't quite work outside kernel yet. */
157extern int cputime_bias;
158
159__BEGIN_DECLS
160int cputime(void);
161void empty_loop(void);
162void mexitcount(uintfptr_t selfpc);
163void nullfunc(void);
164void nullfunc_loop(void);
165__END_DECLS
166#endif
167
168#endif /* !_CPU_PROFILE_H_ */