profile.h revision 134398 
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: head/sys/arm/include/profile.h 134398 2004-08-27 19:42:35Z marcel $
35 */
36
37#ifndef _MACHINE_PROFILE_H_
38#define	_MACHINE_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	MCOUNT_DECL(s)
58#define	MCOUNT_ENTER(s)
59#define	MCOUNT_EXIT(s)
60#else
61#define	MCOUNT_DECL(s)	u_long s;
62#ifdef SMP
63extern int	mcount_lock;
64#define	MCOUNT_ENTER(s)	{ s = intr_disable(); \
65 			  while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
66			  	/* nothing */ ; }
67#define	MCOUNT_EXIT(s)	{ atomic_store_rel_int(&mcount_lock, 0); \
68			  intr_restore(s); }
69#else
70#define	MCOUNT_ENTER(s)	{ s = read_eflags(); disable_intr(); }
71#define	MCOUNT_EXIT(s)	(write_eflags(s))
72#endif
73#endif /* GUPROF */
74
75void bintr(void);
76void btrap(void);
77void eintr(void);
78void user(void);
79
80#define	MCOUNT_FROMPC_USER(pc)					\
81	((pc < (uintfptr_t)VM_MAXUSER_ADDRESS) ? (uintfptr_t)user : pc)
82
83#define	MCOUNT_FROMPC_INTR(pc)					\
84	((pc >= (uintfptr_t)btrap && pc < (uintfptr_t)eintr) ?	\
85	    ((pc >= (uintfptr_t)bintr) ? (uintfptr_t)bintr :	\
86		(uintfptr_t)btrap) : ~0U)
87
88#else /* !_KERNEL */
89
90#define	FUNCTION_ALIGNMENT	4
91
92#define	_MCOUNT_DECL static __inline void _mcount
93
94#define	MCOUNT
95
96typedef	unsigned int	uintfptr_t;
97
98#endif /* _KERNEL */
99
100/*
101 * An unsigned integral type that can hold non-negative difference between
102 * function pointers.
103 */
104typedef	u_int	fptrdiff_t;
105
106#ifdef _KERNEL
107
108void	mcount(uintfptr_t frompc, uintfptr_t selfpc);
109
110#else /* !_KERNEL */
111
112#include <sys/cdefs.h>
113
114__BEGIN_DECLS
115#ifdef __GNUC__
116void	mcount(void) __asm(".mcount");
117#endif
118__END_DECLS
119
120#endif /* _KERNEL */
121
122#endif /* !_MACHINE_PROFILE_H_ */
123