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 * @(#)profile.h 8.1 (Berkeley) 6/11/93 34 * $Id: profile.h,v 1.3 1994/08/21 04:55:29 paul Exp $ 35 */ 36 37 #ifndef _I386_MACHINE_PROFILE_H_ 38 #define _I386_MACHINE_PROFILE_H_ 39 40 #define _MCOUNT_DECL static inline void _mcount 41 42 #define MCOUNT \ 43 extern void mcount() asm("mcount"); void mcount() { \ 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 jsr into self. \ 54 * In GCC the caller's stack frame has already been built so we \ 55 * have to chase a6 to find caller's raddr. \ 56 */ \ 57 asm("movl (%%ebp),%0" : "=r" (frompcindex)); \ 58 frompcindex = ((int *)frompcindex)[1]; \ 59 _mcount(frompcindex, selfpc); \ 60 } 61 62 #define MCOUNT_ENTER save_eflags = read_eflags(); disable_intr() 63 #define MCOUNT_EXIT write_eflags(save_eflags) 64 65 #endif 66