1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)profile.h 8.1 (Berkeley) 6/11/93 34 * $Id: profile.h,v 1.4 1994/05/13 11:12:38 mycroft Exp $ 35 */ 36 37 #define _MCOUNT_DECL static inline void _mcount 38 39 #define MCOUNT \ 40 extern void mcount() asm("mcount"); \ 41 void \ 42 mcount() \ 43 { \ 44 int selfpc, frompcindex; \ 45 /* \ 46 * find the return address for mcount, \ 47 * and the return address for mcount's caller. \ 48 * \ 49 * selfpc = pc pushed by mcount call \ 50 */ \ 51 asm("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 52 /* \ 53 * frompcindex = pc pushed by call into self. \ 54 */ \ 55 asm("movl (%%ebp),%0;movl 4(%0),%0" : "=r" (frompcindex)); \ 56 _mcount(frompcindex, selfpc); \ 57 } 58 59 #ifdef KERNEL 60 /* 61 * Note that we assume splhigh() and splx() cannot call mcount() 62 * recursively. 63 */ 64 #define MCOUNT_ENTER s = splhigh() 65 #define MCOUNT_EXIT splx(s) 66 #endif /* KERNEL */ 67