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profile.h revision 1.7 
      1 /*      $NetBSD: profile.h,v 1.7 2000/07/01 06:42:54 matt Exp $ */
      2 /*
      3  * Copyright (c) 1992 The Regents of the University of California.
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed by the University of
     17  *      California, Berkeley and its contributors.
     18  * 4. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *      @(#)profile.h   7.1 (Berkeley) 7/16/92
     35  */
     36 
     37 /*
     38  * _mcount can't be declared static, gcc will optimize it away then.
     39  */
     40 #define _MCOUNT_DECL void _mcount
     41 
     42 /*
     43  * Note here: the second argument to __mcount() is pc when mcount
     44  * was called. Because it's already on the stack we only have to
     45  * push previous pc _and_ tell calls that it is only one argument
     46  * to __mcount, so that our return address won't get popped from stack.
     47  */
     48 #ifdef __ELF__
     49 #define MCOUNT \
     50 __asm__(".text; .globl __mcount; __mcount: pushl 16(fp); calls $1,_mcount; rsb");
     51 #else
     52 #define MCOUNT \
     53 __asm__(".text; .globl mcount; mcount: pushl 16(fp); calls $1,__mcount; rsb");
     54 #endif
     55 
     56 #ifdef _KERNEL
     57 /*
     58  * Note that we assume splhigh() and splx() cannot call mcount()
     59  * recursively.
     60  */
     61 #define MCOUNT_ENTER    s = splhigh()
     62 #define MCOUNT_EXIT     splx(s)
     63 #endif /* _KERNEL */
     64