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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 /*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
85 extern 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
108 struct gmonparam;
109 void    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
118 #ifdef __mips_n64
119 typedef u_long  uintfptr_t;
120 #else
121 typedef u_int   uintfptr_t;
122 #endif
123
124 #endif /* _KERNEL */
125
126 /*
127  * An unsigned integral type that can hold non-negative difference between
128  * function pointers.
129  */
130 #ifdef __mips_n64
131 typedef u_long  fptrdiff_t;
132 #else
133 typedef u_int   fptrdiff_t;
134 #endif
135
136 #ifdef _KERNEL
137
138 void    mcount(uintfptr_t frompc, uintfptr_t selfpc);
139
140 #ifdef GUPROF
141 struct gmonparam;
142
143 void    nullfunc_loop_profiled(void);
144 void    nullfunc_profiled(void);
145 void    startguprof(struct gmonparam *p);
146 void    stopguprof(struct gmonparam *p);
147 #else
148 #define startguprof(p)
149 #define stopguprof(p)
150 #endif /* GUPROF */
151
152 #else /* !_KERNEL */
153
154 #include <sys/cdefs.h>
155
156 __BEGIN_DECLS
157 #ifdef __GNUC__
158 #ifdef __ELF__
159 void    mcount(void) __asm(".mcount");
160 #else
161 void    mcount(void) __asm("mcount");
162 #endif
163 #endif
164 void    _mcount(uintfptr_t frompc, uintfptr_t selfpc);
165 __END_DECLS
166
167 #endif /* _KERNEL */
168
169 #ifdef GUPROF
170 /* XXX doesn't quite work outside kernel yet. */
171 extern int      cputime_bias;
172
173 __BEGIN_DECLS
174 int     cputime(void);
175 void    empty_loop(void);
176 void    mexitcount(uintfptr_t selfpc);
177 void    nullfunc(void);
178 void    nullfunc_loop(void);
179 __END_DECLS
180 #endif
181
182 #endif /* !_MACHINE_PROFILE_H_ */