73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/*
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* setjmp.h
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*
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* Declarations supporting setjmp and longjump, a method for avoiding
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* the normal function call return sequence. (Bleah!)
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*
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* This file is part of the Mingw32 package.
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*
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* Contributors:
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* Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Revision$
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* $Author$
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* $Date$
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*
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*/
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#ifndef _SETJMP_H_
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#define _SETJMP_H_
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/* All the headers include this file. */
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#include <_mingw.h>
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#ifndef RC_INVOKED
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* The buffer used by setjmp to store the information used by longjmp
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* to perform it's evil goto-like work. The size of this buffer was
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* determined through experimentation; it's contents are a mystery.
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* NOTE: This was determined on an i386 (actually a Pentium). The
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* contents could be different on an Alpha or something else.
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*/
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#define _JBLEN 16
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#define _JBTYPE int
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typedef _JBTYPE jmp_buf[_JBLEN];
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/*
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* The function provided by CRTDLL which appears to do the actual work
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* of setjmp.
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*/
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int _setjmp (jmp_buf);
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#define setjmp(x) _setjmp(x)
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/*
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* Return to the last setjmp call and act as if setjmp had returned
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* nVal (which had better be non-zero!).
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*/
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void longjmp (jmp_buf, int);
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#ifdef __cplusplus
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}
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#endif
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#endif /* Not RC_INVOKED */
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#endif /* Not _SETJMP_H_ */
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