2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
33 * @(#)profile.h 8.1 (Berkeley) 6/11/93
34 * $FreeBSD: src/sys/i386/include/profile.h,v 1.20 1999/12/29 04:33:05 peter Exp $
35 * $DragonFly: src/sys/i386/include/Attic/profile.h,v 1.3 2003/07/20 04:20:32 dillon Exp $
38 #ifndef _MACHINE_PROFILE_H_
39 #define _MACHINE_PROFILE_H_
44 * Config generates something to tell the compiler to align functions on 16
45 * byte boundaries. A strict alignment is good for keeping the tables small.
47 #define FUNCTION_ALIGNMENT 16
50 * The kernel uses assembler stubs instead of unportable inlines.
51 * This is mainly to save a little time when profiling is not enabled,
52 * which is the usual case for the kernel.
54 #define _MCOUNT_DECL void mcount
58 #define CALIB_SCALE 1000
59 #define KCOUNT(p,index) ((p)->kcount[(index) \
60 / (HISTFRACTION * sizeof(HISTCOUNTER))])
61 #define MCOUNT_DECL(s)
62 #define MCOUNT_ENTER(s)
63 #define MCOUNT_EXIT(s)
64 #define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc)
66 #define MCOUNT_DECL(s) u_long s;
68 #define MCOUNT_ENTER(s) { s = read_eflags(); \
69 __asm __volatile("cli" : : : "memory"); \
70 s_lock_np(&mcount_lock); }
71 #define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); write_eflags(s); }
73 #define MCOUNT_ENTER(s) { s = read_eflags(); cpu_disable_intr(); }
74 #define MCOUNT_EXIT(s) (write_eflags(s))
80 #define FUNCTION_ALIGNMENT 4
82 #define _MCOUNT_DECL static __inline void _mcount
88 uintfptr_t selfpc, frompc; \
90 * Find the return address for mcount, \
91 * and the return address for mcount's caller. \
93 * selfpc = pc pushed by call to mcount \
95 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \
97 * frompc = pc pushed by call to mcount's caller. \
98 * The caller's stack frame has already been built, so %ebp is \
99 * the caller's frame pointer. The caller's raddr is in the \
100 * caller's frame following the caller's caller's frame pointer. \
102 asm("movl (%%ebp),%0" : "=r" (frompc)); \
103 frompc = ((uintfptr_t *)frompc)[1]; \
104 _mcount(frompc, selfpc); \
107 typedef unsigned int uintfptr_t;
112 * An unsigned integral type that can hold non-negative difference between
115 typedef u_int fptrdiff_t;
119 void mcount __P((uintfptr_t frompc, uintfptr_t selfpc));
124 void nullfunc_loop_profiled __P((void));
125 void nullfunc_profiled __P((void));
126 void startguprof __P((struct gmonparam *p));
127 void stopguprof __P((struct gmonparam *p));
129 #define startguprof(p)
130 #define stopguprof(p)
135 #include <sys/cdefs.h>
140 void mcount __P((void)) __asm(".mcount");
142 void mcount __P((void)) __asm("mcount");
145 static void _mcount __P((uintfptr_t frompc, uintfptr_t selfpc));
151 /* XXX doesn't quite work outside kernel yet. */
152 extern int cputime_bias;
155 int cputime __P((void));
156 void empty_loop __P((void));
157 void mexitcount __P((uintfptr_t selfpc));
158 void nullfunc __P((void));
159 void nullfunc_loop __P((void));
163 #endif /* !_MACHINE_PROFILE_H_ */