166 lines
4.8 KiB
C
166 lines
4.8 KiB
C
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)profile.h 8.1 (Berkeley) 6/11/93
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PROFILE_H_
|
|
#define _MACHINE_PROFILE_H_
|
|
|
|
#ifdef _KERNEL
|
|
|
|
/*
|
|
* Config generates something to tell the compiler to align functions on 16
|
|
* byte boundaries. A strict alignment is good for keeping the tables small.
|
|
*/
|
|
#define FUNCTION_ALIGNMENT 16
|
|
|
|
/*
|
|
* The kernel uses assembler stubs instead of unportable inlines.
|
|
* This is mainly to save a little time when profiling is not enabled,
|
|
* which is the usual case for the kernel.
|
|
*/
|
|
#define _MCOUNT_DECL void mcount
|
|
#define MCOUNT
|
|
|
|
#ifdef GUPROF
|
|
#define CALIB_SCALE 1000
|
|
#define KCOUNT(p,index) ((p)->kcount[(index) \
|
|
/ (HISTFRACTION * sizeof(HISTCOUNTER))])
|
|
#define MCOUNT_DECL(s)
|
|
#define MCOUNT_ENTER(s)
|
|
#define MCOUNT_EXIT(s)
|
|
#define PC_TO_I(p, pc) ((uintfptr_t)(pc) - (uintfptr_t)(p)->lowpc)
|
|
#else
|
|
#define MCOUNT_DECL(s) u_long s;
|
|
#ifdef SMP
|
|
extern int mcount_lock;
|
|
#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); \
|
|
while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
|
|
/* nothing */ ; }
|
|
#define MCOUNT_EXIT(s) { atomic_store_rel_int(&mcount_lock, 0); \
|
|
write_eflags(s); }
|
|
#else
|
|
#define MCOUNT_ENTER(s) { s = read_eflags(); disable_intr(); }
|
|
#define MCOUNT_EXIT(s) (write_eflags(s))
|
|
#endif
|
|
#endif /* GUPROF */
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#define FUNCTION_ALIGNMENT 4
|
|
|
|
#define _MCOUNT_DECL static __inline void _mcount
|
|
|
|
#define MCOUNT \
|
|
void \
|
|
mcount() \
|
|
{ \
|
|
uintfptr_t selfpc, frompc; \
|
|
/* \
|
|
* Find the return address for mcount, \
|
|
* and the return address for mcount's caller. \
|
|
* \
|
|
* selfpc = pc pushed by call to mcount \
|
|
*/ \
|
|
asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \
|
|
/* \
|
|
* frompc = pc pushed by call to mcount's caller. \
|
|
* The caller's stack frame has already been built, so %ebp is \
|
|
* the caller's frame pointer. The caller's raddr is in the \
|
|
* caller's frame following the caller's caller's frame pointer. \
|
|
*/ \
|
|
asm("movl (%%ebp),%0" : "=r" (frompc)); \
|
|
frompc = ((uintfptr_t *)frompc)[1]; \
|
|
_mcount(frompc, selfpc); \
|
|
}
|
|
|
|
typedef unsigned int uintfptr_t;
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/*
|
|
* An unsigned integral type that can hold non-negative difference between
|
|
* function pointers.
|
|
*/
|
|
typedef u_int fptrdiff_t;
|
|
|
|
#ifdef _KERNEL
|
|
|
|
void mcount(uintfptr_t frompc, uintfptr_t selfpc);
|
|
void kmupetext(uintfptr_t nhighpc);
|
|
|
|
#ifdef GUPROF
|
|
struct gmonparam;
|
|
|
|
void nullfunc_loop_profiled(void);
|
|
void nullfunc_profiled(void);
|
|
void startguprof(struct gmonparam *p);
|
|
void stopguprof(struct gmonparam *p);
|
|
#else
|
|
#define startguprof(p)
|
|
#define stopguprof(p)
|
|
#endif /* GUPROF */
|
|
|
|
#else /* !_KERNEL */
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__BEGIN_DECLS
|
|
#ifdef __GNUC__
|
|
#ifdef __ELF__
|
|
void mcount(void) __asm(".mcount");
|
|
#else
|
|
void mcount(void) __asm("mcount");
|
|
#endif
|
|
#endif
|
|
static void _mcount(uintfptr_t frompc, uintfptr_t selfpc);
|
|
__END_DECLS
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#ifdef GUPROF
|
|
/* XXX doesn't quite work outside kernel yet. */
|
|
extern int cputime_bias;
|
|
|
|
__BEGIN_DECLS
|
|
int cputime(void);
|
|
void empty_loop(void);
|
|
void mexitcount(uintfptr_t selfpc);
|
|
void nullfunc(void);
|
|
void nullfunc_loop(void);
|
|
__END_DECLS
|
|
#endif
|
|
|
|
#endif /* !_MACHINE_PROFILE_H_ */
|