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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
* $Id: profile.h,v 1.17 1998/07/14 05:09:43 bde Exp $
*/
#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
#define MCOUNT_ENTER(s) { s = read_eflags(); \
__asm __volatile("cli" : : : "memory"); \
s_lock_np(&mcount_lock); }
#define MCOUNT_EXIT(s) { s_unlock_np(&mcount_lock); 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 __P((uintfptr_t frompc, uintfptr_t selfpc));
#ifdef GUPROF
struct gmonparam;
void nullfunc_loop_profiled __P((void));
void nullfunc_profiled __P((void));
void startguprof __P((struct gmonparam *p));
void stopguprof __P((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 __P((void)) __asm(".mcount");
#else
void mcount __P((void)) __asm("mcount");
#endif
#endif
static void _mcount __P((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 __P((void));
void empty_loop __P((void));
void mexitcount __P((uintfptr_t selfpc));
void nullfunc __P((void));
void nullfunc_loop __P((void));
__END_DECLS
#endif
#endif /* !_MACHINE_PROFILE_H_ */
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