/* $OpenBSD: profile.h,v 1.9 2003/08/21 05:08:15 drahn Exp $ */ /* $NetBSD: profile.h,v 1.6 1995/03/28 18:17:08 jtc 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. 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 #define MCOUNT \ extern void mcount(void) __asm("__mcount"); \ __weak_alias(mcount,__mcount); \ 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(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 */