NetBSD/sys/arch/i386/include/profile.h

74 lines
2.9 KiB
C

/* $NetBSD: profile.h,v 1.16 2001/11/30 06:53:56 enami Exp $ */
/*
* 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
*/
#define _MCOUNT_DECL static __inline void _mcount
#ifdef __ELF__
#define MCOUNT_ENTRY "__mcount"
#define MCOUNT_COMPAT __weak_alias(mcount, __mcount)
#else
#define MCOUNT_ENTRY "mcount"
#define MCOUNT_COMPAT /* nothing */
#endif
#define MCOUNT \
MCOUNT_COMPAT \
extern void mcount __P((void)) __asm__(MCOUNT_ENTRY); \
void \
mcount() \
{ \
int selfpc, frompcindex; \
/* \
* find the return address for mcount, \
* and the return address for mcount's caller. \
* \
* selfpc = pc pushed by mcount call \
*/ \
__asm__ __volatile__("movl 4(%%ebp),%0" : "=r" (selfpc)); \
/* \
* frompcindex = pc pushed by call into self. \
*/ \
__asm__ __volatile__("movl (%%ebp),%0;movl 4(%0),%0" \
: "=r" (frompcindex)); \
_mcount((u_long)frompcindex, (u_long)selfpc); \
}
#ifdef _KERNEL
#define MCOUNT_ENTER (void)&s; __asm__("cli");
#define MCOUNT_EXIT __asm__("sti");
#endif /* _KERNEL */