/* * Copyright (c) 1996 Nivas Madhur * 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. * * from: @(#)profile.h 8.1 (Berkeley) 6/11/93 * $Id: profile.h,v 1.1 1997/03/03 19:30:26 rahnds Exp $ */ #define _MCOUNT_DECL static inline void _mcount #define MCOUNT \ extern void mcount() asm("mcount"); \ void \ mcount() \ { \ int selfret; \ register int callerret; \ /* \ * find the return address for mcount, \ * and the return address for mcount's caller. \ * \ * selfret = ret pushed by mcount call \ */ \ asm volatile("st r1,%0" : "=m" (selfret)); \ /* \ * callerret = ret pushed by call into self. \ */ \ /* \ * This may not be right. It all depends on where the \ * caller stores the return address. XXX \ */ \ asm volatile("addu r10,r31,48"); \ asm volatile("ld %0,r10,36" : "=r" (callerret)); \ _mcount(callerret, selfret); \ } #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 */