60 lines
2.5 KiB
C
60 lines
2.5 KiB
C
/* $NetBSD: profile.h,v 1.9 2003/08/07 16:30:11 agc Exp $ */
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/*
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* Copyright (c) 1992 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)profile.h 7.1 (Berkeley) 7/16/92
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*/
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/*
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* _mcount can't be declared static, gcc will optimize it away then.
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*/
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#define _MCOUNT_DECL void _mcount
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/*
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* Note here: the second argument to __mcount() is pc when mcount
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* was called. Because it's already on the stack we only have to
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* push previous pc _and_ tell calls that it is only one argument
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* to __mcount, so that our return address won't get popped from stack.
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*/
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#ifdef __ELF__
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#define MCOUNT \
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__asm__(".text; .globl __mcount; __mcount: pushl 16(%fp); calls $1,_mcount; rsb");
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#else
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#define MCOUNT \
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__asm__(".text; .globl mcount; mcount: pushl 16(%fp); calls $1,__mcount; rsb");
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#endif
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#ifdef _KERNEL
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/*
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* Note that we assume splhigh() and splx() cannot call mcount()
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* recursively.
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*/
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#define MCOUNT_ENTER s = splhigh()
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#define MCOUNT_EXIT splx(s)
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#endif /* _KERNEL */
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