Start removing the old build infrastructure for the a.out
[dragonfly.git] / sys / i386 / include / profile.h
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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/i386/include/profile.h,v 1.20 1999/12/29 04:33:05 peter Exp $
aa8d5dcb 35 * $DragonFly: src/sys/i386/include/Attic/profile.h,v 1.5 2004/03/20 16:27:41 drhodus Exp $
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36 */
37
38#ifndef _MACHINE_PROFILE_H_
39#define _MACHINE_PROFILE_H_
40
41#ifdef _KERNEL
42
43/*
44 * Config generates something to tell the compiler to align functions on 16
45 * byte boundaries. A strict alignment is good for keeping the tables small.
46 */
47#define FUNCTION_ALIGNMENT 16
48
49/*
50 * The kernel uses assembler stubs instead of unportable inlines.
51 * This is mainly to save a little time when profiling is not enabled,
52 * which is the usual case for the kernel.
53 */
54#define _MCOUNT_DECL void mcount
55#define MCOUNT
56
57#ifdef GUPROF
58#define CALIB_SCALE 1000
59#define KCOUNT(p,index) ((p)->kcount[(index) \
60 / (HISTFRACTION * sizeof(HISTCOUNTER))])
61#define MCOUNT_DECL(s)
62#define MCOUNT_ENTER(s)
63#define MCOUNT_EXIT(s)
64#define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc)
65#else
66#define MCOUNT_DECL(s) u_long s;
67#ifdef SMP
68#define MCOUNT_ENTER(s) { s = read_eflags(); \
69 __asm __volatile("cli" : : : "memory"); \
70 s_lock_np(&mcount_lock); }
71#define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); write_eflags(s); }
72#else
e32aee1c 73#define MCOUNT_ENTER(s) { s = read_eflags(); cpu_disable_intr(); }
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74#define MCOUNT_EXIT(s) (write_eflags(s))
75#endif
76#endif /* GUPROF */
77
78#else /* !_KERNEL */
79
80#define FUNCTION_ALIGNMENT 4
81
82#define _MCOUNT_DECL static __inline void _mcount
83
84#define MCOUNT \
85void \
86mcount() \
87{ \
88 uintfptr_t selfpc, frompc; \
89 /* \
90 * Find the return address for mcount, \
91 * and the return address for mcount's caller. \
92 * \
93 * selfpc = pc pushed by call to mcount \
94 */ \
95 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \
96 /* \
97 * frompc = pc pushed by call to mcount's caller. \
98 * The caller's stack frame has already been built, so %ebp is \
99 * the caller's frame pointer. The caller's raddr is in the \
100 * caller's frame following the caller's caller's frame pointer. \
101 */ \
102 asm("movl (%%ebp),%0" : "=r" (frompc)); \
103 frompc = ((uintfptr_t *)frompc)[1]; \
104 _mcount(frompc, selfpc); \
105}
106
107typedef unsigned int uintfptr_t;
108
109#endif /* _KERNEL */
110
111/*
112 * An unsigned integral type that can hold non-negative difference between
113 * function pointers.
114 */
115typedef u_int fptrdiff_t;
116
117#ifdef _KERNEL
118
3ae0cd58 119void mcount (uintfptr_t frompc, uintfptr_t selfpc);
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120
121#ifdef GUPROF
122struct gmonparam;
123
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124void nullfunc_loop_profiled (void);
125void nullfunc_profiled (void);
126void startguprof (struct gmonparam *p);
127void stopguprof (struct gmonparam *p);
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128#else
129#define startguprof(p)
130#define stopguprof(p)
131#endif /* GUPROF */
132
133#else /* !_KERNEL */
134
135#include <sys/cdefs.h>
136
137__BEGIN_DECLS
138#ifdef __GNUC__
3ae0cd58 139void mcount (void) __asm(".mcount");
984263bc 140#endif
3ae0cd58 141static void _mcount (uintfptr_t frompc, uintfptr_t selfpc);
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142__END_DECLS
143
144#endif /* _KERNEL */
145
146#ifdef GUPROF
147/* XXX doesn't quite work outside kernel yet. */
148extern int cputime_bias;
149
150__BEGIN_DECLS
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151int cputime (void);
152void empty_loop (void);
153void mexitcount (uintfptr_t selfpc);
154void nullfunc (void);
155void nullfunc_loop (void);
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156__END_DECLS
157#endif
158
159#endif /* !_MACHINE_PROFILE_H_ */