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

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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 * $Id: profile.h,v 1.16 1998/07/10 09:26:41 bde Exp $
35 */
36
37#ifndef _MACHINE_PROFILE_H_
38#define _MACHINE_PROFILE_H_
39
40#ifdef KERNEL
41
42/*

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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;
66#ifdef SMP
67#define MCOUNT_ENTER(s) { s = read_eflags(); \
68 __asm __volatile("cli" : : : "memory"); \
69 s_lock_np(&mcount_lock); }
70#define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); write_eflags(s); }
71#else

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79#define FUNCTION_ALIGNMENT 4
80
81#define _MCOUNT_DECL static __inline void _mcount
82
83#define MCOUNT \
84void \
85mcount() \
86{ \
87 uintfptr_t selfpc, frompc; \
88 /* \
89 * Find the return address for mcount, \
90 * and the return address for mcount's caller. \
91 * \
92 * selfpc = pc pushed by call to mcount \
93 */ \
94 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \
95 /* \
96 * frompc = pc pushed by call to mcount's caller. \
97 * The caller's stack frame has already been built, so %ebp is \
98 * the caller's frame pointer. The caller's raddr is in the \
99 * caller's frame following the caller's caller's frame pointer. \
100 */ \
101 asm("movl (%%ebp),%0" : "=r" (frompc)); \
102 frompc = ((uintfptr_t *)frompc)[1]; \
103 _mcount(frompc, selfpc); \
104}
105
106typedef unsigned int uintfptr_t;
107
108#endif /* KERNEL */
109
110/*
111 * An unsigned integral type that can hold non-negative difference between
112 * function pointers.
113 */
114typedef u_int fptrdiff_t;
115
116#ifdef KERNEL
117
118void mcount __P((uintfptr_t frompc, uintfptr_t selfpc));
119
120#ifdef GUPROF
121struct gmonparam;
122
123void nullfunc_loop_profiled __P((void));
124void nullfunc_profiled __P((void));
125void startguprof __P((struct gmonparam *p));
126void stopguprof __P((struct gmonparam *p));

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132#else /* !KERNEL */
133
134#include <sys/cdefs.h>
135
136__BEGIN_DECLS
137#ifdef __GNUC__
138void mcount __P((void)) __asm("mcount");
139#endif
140static void _mcount __P((uintfptr_t frompc, uintfptr_t selfpc));
141__END_DECLS
142
143#endif /* KERNEL */
144
145#ifdef GUPROF
146/* XXX doesn't quite work outside kernel yet. */
147extern int cputime_bias;
148
149__BEGIN_DECLS
150int cputime __P((void));
151void empty_loop __P((void));
152void mexitcount __P((uintfptr_t selfpc));
153void nullfunc __P((void));
154void nullfunc_loop __P((void));
155__END_DECLS
156#endif
157
158#endif /* !_MACHINE_PROFILE_H_ */