1 /* $NetBSD: profile.h,v 1.19 2004/05/24 14:01:10 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)profile.h 8.1 (Berkeley) 6/11/93 32 */ 33 34 #include <machine/cpufunc.h> 35 36 #define _MCOUNT_DECL static __inline void _mcount 37 38 #ifdef __ELF__ 39 #define MCOUNT_ENTRY "__mcount" 40 #define MCOUNT_COMPAT __weak_alias(mcount, __mcount) 41 #else 42 #define MCOUNT_ENTRY "mcount" 43 #define MCOUNT_COMPAT /* nothing */ 44 #endif 45 46 #define MCOUNT \ 47 MCOUNT_COMPAT \ 48 extern void mcount(void) __asm__(MCOUNT_ENTRY); \ 49 void \ 50 mcount() \ 51 { \ 52 int selfpc, frompcindex; \ 53 /* \ 54 * find the return address for mcount, \ 55 * and the return address for mcount's caller. \ 56 * \ 57 * selfpc = pc pushed by mcount call \ 58 */ \ 59 __asm__ __volatile__("movl 4(%%ebp),%0" : "=r" (selfpc)); \ 60 /* \ 61 * frompcindex = pc pushed by call into self. \ 62 */ \ 63 __asm__ __volatile__("movl (%%ebp),%0;movl 4(%0),%0" \ 64 : "=r" (frompcindex)); \ 65 _mcount((u_long)frompcindex, (u_long)selfpc); \ 66 } 67 68 #ifdef _KERNEL 69 #define MCOUNT_ENTER do { s = (int)read_psl(); disable_intr(); } while (0) 70 #define MCOUNT_EXIT do { write_psl(s); } while (0) 71 #endif /* _KERNEL */ 72