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/* $NetBSD: profile.h,v 1.3 1996/03/14 23:11:34 mark Exp $ */
/*
* Copyright (c) 1995-1996 Mark Brinicombe
*
* 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 Mark Brinicombe.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#define _MCOUNT_DECL static inline void _mcount
/* Cannot implement mcount in C as GCC uses the ip register to pass the
* frompcindex variable. GCC also uses ip during the register pushing
* at the beginning of any C function.
*/
#define MCOUNT \
extern void mcount() asm("mcount"); \
void \
mcount() \
{ \
register int selfpc, frompcindex; \
/* \
* find the return address for mcount, \
* and the return address for mcount's caller. \
* \
* selfpc = pc pushed by mcount call \
*/ \
asm("mov %0, lr" : "=r" (selfpc)); \
/* \
* frompcindex = pc pushed by call into self. \
*/ \
asm("mov %0, ip" : "=r" (frompcindex)); \
_mcount(frompcindex, selfpc); \
}
#ifdef _KERNEL
/*
* Note that we assume splhigh() and splx() cannot call mcount()
* recursively.
*/
#define MCOUNT_ENTER s = splhigh()
#define MCOUNT_EXIT splx(s)
#endif /* _KERNEL */
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