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/*
* 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_rflags(); disable_intr(); \
while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1)) \
/* nothing */ ; }
#define MCOUNT_EXIT(s) { atomic_store_rel_int(&mcount_lock, 0); \
write_rflags(s); }
#else
#define MCOUNT_ENTER(s) { s = read_rflags(); disable_intr(); }
#define MCOUNT_EXIT(s) (write_rflags(s))
#endif
#endif /* GUPROF */
#else /* !_KERNEL */
#define FUNCTION_ALIGNMENT 4
#define _MCOUNT_DECL static __inline void _mcount
#ifdef __GNUC__
#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("movq 8(%%rbp),%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("movq (%%rbp),%0" : "=r" (frompc)); \
frompc = ((uintfptr_t *)frompc)[1]; \
_mcount(frompc, selfpc); \
}
#else /* __GNUC__ */
#define MCOUNT \
void \
mcount() \
{ \
}
#endif /* __GNUC__ */
typedef unsigned long 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__
void mcount(void) __asm(".mcount");
#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_ */
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