1 /* $OpenBSD: profile.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
2 /*-
3 * SPDX-License-Identifier: BSD-3-Clause
4 *
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Ralph Campbell.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * from: @(#)profile.h 8.1 (Berkeley) 6/10/93
36 * JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta
37 * $FreeBSD: releng/12.0/sys/mips/include/profile.h 326023 2017-11-20 19:43:44Z pfg $
38 */
39 #ifndef _MACHINE_PROFILE_H_
40 #define _MACHINE_PROFILE_H_
41
42 #define _MCOUNT_DECL void ___mcount
43
44 /*XXX The cprestore instruction is a "dummy" to shut up as(1). */
45
46 /*XXX This is not MIPS64 safe. */
47
48 #define MCOUNT \
49 __asm(".globl _mcount;" \
50 ".type _mcount,@function;" \
51 "_mcount:;" \
52 ".set noreorder;" \
53 ".set noat;" \
54 ".cpload $25;" \
55 ".cprestore 4;" \
56 "sw $4,8($29);" \
57 "sw $5,12($29);" \
58 "sw $6,16($29);" \
59 "sw $7,20($29);" \
60 "sw $1,0($29);" \
61 "sw $31,4($29);" \
62 "move $5,$31;" \
63 "jal ___mcount;" \
64 "move $4,$1;" \
65 "lw $4,8($29);" \
66 "lw $5,12($29);" \
67 "lw $6,16($29);" \
68 "lw $7,20($29);" \
69 "lw $31,4($29);" \
70 "lw $1,0($29);" \
71 "addu $29,$29,8;" \
72 "j $31;" \
73 "move $31,$1;" \
74 ".set reorder;" \
75 ".set at");
76
77 #ifdef _KERNEL
78 /*
79 * The following two macros do splhigh and splx respectively.
80 * They have to be defined this way because these are real
81 * functions on the MIPS, and we do not want to invoke mcount
82 * recursively.
83 */
84
85 #define MCOUNT_DECL(s) u_long s;
86 #ifdef SMP
87 extern int mcount_lock;
88 #define MCOUNT_ENTER(s) { \
89 s = intr_disable(); \
90 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
91 /* nothing */ ; \
92 }
93 #define MCOUNT_EXIT(s) { \
94 atomic_store_rel_int(&mcount_lock, 0); \
95 intr_restore(s); \
96 }
97 #else
98 #define MCOUNT_ENTER(s) { s = intr_disable(); }
99 #define MCOUNT_EXIT(s) (intr_restore(s))
100 #endif
101
102 /* REVISIT for mips */
103 /*
104 * Config generates something to tell the compiler to align functions on 16
105 * byte boundaries. A strict alignment is good for keeping the tables small.
106 */
107 #define FUNCTION_ALIGNMENT 16
108
109 #ifdef GUPROF
110 struct gmonparam;
111 void stopguprof __P((struct gmonparam *p));
112 #else
113 #define stopguprof(p)
114 #endif /* GUPROF */
115
116 #else /* !_KERNEL */
117
118 #define FUNCTION_ALIGNMENT 4
119
120 #ifdef __mips_n64
121 typedef u_long uintfptr_t;
122 #else
123 typedef u_int uintfptr_t;
124 #endif
125
126 #endif /* _KERNEL */
127
128 /*
129 * An unsigned integral type that can hold non-negative difference between
130 * function pointers.
131 */
132 #ifdef __mips_n64
133 typedef u_long fptrdiff_t;
134 #else
135 typedef u_int fptrdiff_t;
136 #endif
137
138 #ifdef _KERNEL
139
140 void mcount(uintfptr_t frompc, uintfptr_t selfpc);
141
142 #ifdef GUPROF
143 struct gmonparam;
144
145 void nullfunc_loop_profiled(void);
146 void nullfunc_profiled(void);
147 void startguprof(struct gmonparam *p);
148 void stopguprof(struct gmonparam *p);
149 #else
150 #define startguprof(p)
151 #define stopguprof(p)
152 #endif /* GUPROF */
153
154 #else /* !_KERNEL */
155
156 #include <sys/cdefs.h>
157
158 __BEGIN_DECLS
159 #ifdef __GNUC__
160 #ifdef __ELF__
161 void mcount(void) __asm(".mcount");
162 #else
163 void mcount(void) __asm("mcount");
164 #endif
165 #endif
166 void _mcount(uintfptr_t frompc, uintfptr_t selfpc);
167 __END_DECLS
168
169 #endif /* _KERNEL */
170
171 #ifdef GUPROF
172 /* XXX doesn't quite work outside kernel yet. */
173 extern int cputime_bias;
174
175 __BEGIN_DECLS
176 int cputime(void);
177 void empty_loop(void);
178 void mexitcount(uintfptr_t selfpc);
179 void nullfunc(void);
180 void nullfunc_loop(void);
181 __END_DECLS
182 #endif
183
184 #endif /* !_MACHINE_PROFILE_H_ */
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