2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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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.
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33 * @(#)profile.h 8.1 (Berkeley) 6/11/93
34 * $FreeBSD: src/sys/amd64/include/profile.h,v 1.33 2004/01/06 20:36:21 nectar Exp $
37 #ifndef _CPU_PROFILE_H_
38 #define _CPU_PROFILE_H_
43 * Config generates something to tell the compiler to align functions on 16
44 * byte boundaries. A strict alignment is good for keeping the tables small.
46 #define FUNCTION_ALIGNMENT 16
49 * The kernel uses assembler stubs instead of unportable inlines.
50 * This is mainly to save a little time when profiling is not enabled,
51 * which is the usual case for the kernel.
53 #define _MCOUNT_DECL void mcount
57 #define CALIB_SCALE 1000
58 #define KCOUNT(p,index) ((p)->kcount[(index) \
59 / (HISTFRACTION * sizeof(HISTCOUNTER))])
60 #define MCOUNT_DECL(s)
61 #define MCOUNT_ENTER(s)
62 #define MCOUNT_EXIT(s)
63 #define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc)
65 #define MCOUNT_DECL(s) u_long s;
67 extern int mcount_lock;
68 #define MCOUNT_ENTER(s) { s = read_rflags(); disable_intr(); \
69 while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
71 #define MCOUNT_EXIT(s) { atomic_store_rel_int(&mcount_lock, 0); \
74 #define MCOUNT_ENTER(s) { s = read_rflags(); disable_intr(); }
75 #define MCOUNT_EXIT(s) (write_rflags(s))
81 #define FUNCTION_ALIGNMENT 4
83 #define _MCOUNT_DECL \
84 static void _mcount(uintfptr_t frompc, uintfptr_t selfpc) __used; \
88 #define MCOUNT __asm(" \n\
92 .type .mcount,@function \n\
101 movq 8(%rbp),%rdi \n\
102 movq 7*8(%rsp),%rsi \n\
112 .size .mcount, . - .mcount");
119 #endif /* __GNUC__ */
121 typedef unsigned long uintfptr_t;
126 * An unsigned integral type that can hold non-negative difference between
129 typedef u_int fptrdiff_t;
133 void mcount(uintfptr_t frompc, uintfptr_t selfpc);
134 void kmupetext(uintfptr_t nhighpc);
139 void nullfunc_loop_profiled(void);
140 void nullfunc_profiled(void);
141 void startguprof(struct gmonparam *p);
142 void stopguprof(struct gmonparam *p);
144 #define startguprof(p)
145 #define stopguprof(p)
150 #include <sys/cdefs.h>
154 void mcount(void) __asm(".mcount");
161 /* XXX doesn't quite work outside kernel yet. */
162 extern int cputime_bias;
166 void empty_loop(void);
167 void mexitcount(uintfptr_t selfpc);
169 void nullfunc_loop(void);
173 #endif /* !_CPU_PROFILE_H_ */