profile.h revision 206717 
1/*	$OpenBSD: profile.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
2/*-
3 * Copyright (c) 1992, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Ralph Campbell.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
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 *	from: @(#)profile.h	8.1 (Berkeley) 6/10/93
34 *	JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta
35 * $FreeBSD: head/sys/mips/include/profile.h 206717 2010-04-17 01:17:31Z jmallett $
36 */
37#ifndef _MACHINE_PROFILE_H_
38#define	_MACHINE_PROFILE_H_
39
40#define	_MCOUNT_DECL void ___mcount
41
42/*XXX The cprestore instruction is a "dummy" to shut up as(1). */
43
44/*XXX This is not MIPS64 safe. */
45
46#define	MCOUNT \
47	__asm(".globl _mcount;"		\
48	".type _mcount,@function;"	\
49	"_mcount:;"			\
50	".set noreorder;"		\
51	".set noat;"			\
52	".cpload $25;"			\
53	".cprestore 4;"			\
54	"sw $4,8($29);"			\
55	"sw $5,12($29);"		\
56	"sw $6,16($29);"		\
57	"sw $7,20($29);"		\
58	"sw $1,0($29);"			\
59	"sw $31,4($29);"		\
60	"move $5,$31;"			\
61	"jal ___mcount;"		\
62	"move $4,$1;"			\
63	"lw $4,8($29);"			\
64	"lw $5,12($29);"		\
65	"lw $6,16($29);"		\
66	"lw $7,20($29);"		\
67	"lw $31,4($29);"		\
68	"lw $1,0($29);"			\
69	"addu $29,$29,8;"		\
70	"j $31;"			\
71	"move $31,$1;"			\
72	".set reorder;"			\
73	".set at");
74
75#ifdef _KERNEL
76/*
77 * The following two macros do splhigh and splx respectively.
78 * They have to be defined this way because these are real
79 * functions on the MIPS, and we do not want to invoke mcount
80 * recursively.
81 */
82
83#define	MCOUNT_DECL(s)	u_long s;
84#ifdef SMP
85extern int	mcount_lock;
86#define	MCOUNT_ENTER(s)	{					\
87	s = intr_disable();					\
88	while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1))	\
89		/* nothing */ ;					\
90}
91#define	MCOUNT_EXIT(s)	{					\
92	atomic_store_rel_int(&mcount_lock, 0);			\
93	intr_restore(s);						\
94}
95#else
96#define	MCOUNT_ENTER(s)	{ s = intr_disable(); }
97#define	MCOUNT_EXIT(s)	(intr_restore(s))
98#endif
99
100/* REVISIT for mips */
101/*
102 * Config generates something to tell the compiler to align functions on 16
103 * byte boundaries.  A strict alignment is good for keeping the tables small.
104 */
105#define	FUNCTION_ALIGNMENT	16
106
107#ifdef GUPROF
108struct gmonparam;
109void	stopguprof __P((struct gmonparam *p));
110#else
111#define	stopguprof(p)
112#endif /* GUPROF */
113
114#else	/* !_KERNEL */
115
116#define	FUNCTION_ALIGNMENT	4
117
118typedef unsigned int	uintfptr_t;
119
120#endif /* _KERNEL */
121
122/*
123 * An unsigned integral type that can hold non-negative difference between
124 * function pointers.
125 */
126typedef u_int	fptrdiff_t;
127
128#ifdef _KERNEL
129
130void	mcount(uintfptr_t frompc, uintfptr_t selfpc);
131
132#ifdef GUPROF
133struct gmonparam;
134
135void	nullfunc_loop_profiled(void);
136void	nullfunc_profiled(void);
137void	startguprof(struct gmonparam *p);
138void	stopguprof(struct gmonparam *p);
139#else
140#define	startguprof(p)
141#define	stopguprof(p)
142#endif /* GUPROF */
143
144#else /* !_KERNEL */
145
146#include <sys/cdefs.h>
147
148__BEGIN_DECLS
149#ifdef __GNUC__
150#ifdef __ELF__
151void	mcount(void) __asm(".mcount");
152#else
153void	mcount(void) __asm("mcount");
154#endif
155#endif
156void	_mcount(uintfptr_t frompc, uintfptr_t selfpc);
157__END_DECLS
158
159#endif /* _KERNEL */
160
161#ifdef GUPROF
162/* XXX doesn't quite work outside kernel yet. */
163extern int	cputime_bias;
164
165__BEGIN_DECLS
166int	cputime(void);
167void	empty_loop(void);
168void	mexitcount(uintfptr_t selfpc);
169void	nullfunc(void);
170void	nullfunc_loop(void);
171__END_DECLS
172#endif
173
174#endif /* !_MACHINE_PROFILE_H_ */
175