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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  * $FreeBSD$
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 #define MCOUNT \
45         __asm(".globl _mcount;"         \
46         ".type _mcount,@function;"      \
47         "_mcount:;"                     \
48         ".set noreorder;"               \
49         ".set noat;"                    \
50         ".cpload $25;"                  \
51         ".cprestore 4;"                 \
52         "sw $4,8($29);"                 \
53         "sw $5,12($29);"                \
54         "sw $6,16($29);"                \
55         "sw $7,20($29);"                \
56         "sw $1,0($29);"                 \
57         "sw $31,4($29);"                \
58         "move $5,$31;"                  \
59         "jal ___mcount;"                \
60         "move $4,$1;"                   \
61         "lw $4,8($29);"                 \
62         "lw $5,12($29);"                \
63         "lw $6,16($29);"                \
64         "lw $7,20($29);"                \
65         "lw $31,4($29);"                \
66         "lw $1,0($29);"                 \
67         "addu $29,$29,8;"               \
68         "j $31;"                        \
69         "move $31,$1;"                  \
70         ".set reorder;"                 \
71         ".set at");
72
73 #ifdef _KERNEL
74 /*
75  * The following two macros do splhigh and splx respectively.
76  * They have to be defined this way because these are real
77  * functions on the MIPS, and we do not want to invoke mcount
78  * recursively.
79  */
80
81 #define MCOUNT_DECL(s)  u_long s;
82 #ifdef SMP
83 extern int      mcount_lock;
84 #define MCOUNT_ENTER(s) {                                       \
85         s = disable_intr();                                     \
86         while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1))      \
87                 /* nothing */ ;                                 \
88 }
89 #define MCOUNT_EXIT(s)  {                                       \
90         atomic_store_rel_int(&mcount_lock, 0);                  \
91         enableintr(s);                                          \
92 }
93 #else
94 #define MCOUNT_ENTER(s) { s = disable_intr(); }
95 #define MCOUNT_EXIT(s)  (enableintr(s))
96 #endif
97
98 /* REVISIT for mips */
99 /*
100  * Config generates something to tell the compiler to align functions on 16
101  * byte boundaries.  A strict alignment is good for keeping the tables small.
102  */
103 #define FUNCTION_ALIGNMENT      16
104
105 #ifdef GUPROF
106 struct gmonparam;
107 void    stopguprof __P((struct gmonparam *p));
108 #else
109 #define stopguprof(p)
110 #endif /* GUPROF */
111
112 #else   /* !_KERNEL */
113
114 #define FUNCTION_ALIGNMENT      4
115
116 typedef unsigned int    uintfptr_t;
117
118 #endif /* _KERNEL */
119
120 /*
121  * An unsigned integral type that can hold non-negative difference between
122  * function pointers.
123  */
124 typedef u_int   fptrdiff_t;
125
126 #ifdef _KERNEL
127
128 void    mcount(uintfptr_t frompc, uintfptr_t selfpc);
129
130 #ifdef GUPROF
131 struct gmonparam;
132
133 void    nullfunc_loop_profiled(void);
134 void    nullfunc_profiled(void);
135 void    startguprof(struct gmonparam *p);
136 void    stopguprof(struct gmonparam *p);
137 #else
138 #define startguprof(p)
139 #define stopguprof(p)
140 #endif /* GUPROF */
141
142 #else /* !_KERNEL */
143
144 #include <sys/cdefs.h>
145
146 __BEGIN_DECLS
147 #ifdef __GNUC__
148 #ifdef __ELF__
149 void    mcount(void) __asm(".mcount");
150 #else
151 void    mcount(void) __asm("mcount");
152 #endif
153 #endif
154 void    _mcount(uintfptr_t frompc, uintfptr_t selfpc);
155 __END_DECLS
156
157 #endif /* _KERNEL */
158
159 #ifdef GUPROF
160 /* XXX doesn't quite work outside kernel yet. */
161 extern int      cputime_bias;
162
163 __BEGIN_DECLS
164 int     cputime(void);
165 void    empty_loop(void);
166 void    mexitcount(uintfptr_t selfpc);
167 void    nullfunc(void);
168 void    nullfunc_loop(void);
169 __END_DECLS
170 #endif
171
172 #endif /* !_MACHINE_PROFILE_H_ */