116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
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/*
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* alloca.h Dynamic stack storage allocation
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*
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* =========================================================================
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*
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* Open Watcom Project
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*
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* Copyright (c) 2002-2010 Open Watcom Contributors. All Rights Reserved.
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* This file is automatically generated. Do not edit directly.
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*
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* =========================================================================
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*/
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#ifndef _STRINGS_H_INCLUDED
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#define _STRINGS_H_INCLUDED
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#ifndef _ENABLE_AUTODEPEND
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#pragma read_only_file;
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#endif
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#ifndef _COMDEF_H_INCLUDED
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#include <_comdef.h>
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#endif
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#ifdef __cplusplus
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#ifndef _STDSIZE_T_DEFINED
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#define _STDSIZE_T_DEFINED
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namespace std {
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typedef unsigned size_t;
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}
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typedef std::size_t _w_size_t;
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#endif
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#ifndef _SIZE_T_DEFINED
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#define _SIZE_T_DEFINED
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#define _SIZE_T_DEFINED_
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using std::size_t;
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#endif
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#else /* __cplusplus not defined */
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#ifndef _SIZE_T_DEFINED
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#define _SIZE_T_DEFINED
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#define _SIZE_T_DEFINED_
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typedef unsigned size_t;
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typedef size_t _w_size_t;
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#endif
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#endif /* __cplusplus not defined */
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#ifndef NULL
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#ifdef __cplusplus
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#if !defined(_M_I86) || defined(__SMALL__) || defined(__MEDIUM__)
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#define NULL 0
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#else
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#define NULL 0L
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#endif
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#else
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#define NULL ((void *)0)
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#endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef alloca
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_WCRTLINK extern void *alloca(_w_size_t __size);
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_WCRTLINK extern void *_alloca(_w_size_t __size);
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_WCRTLINK extern unsigned stackavail( void );
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#ifdef _M_IX86
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extern void *__doalloca(_w_size_t __size);
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#pragma aux stackavail __modify __nomemory;
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#define __ALLOCA_ALIGN( s ) (((s)+(sizeof(int)-1))&~(sizeof(int)-1))
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#define __alloca( s ) __doalloca(__ALLOCA_ALIGN(s))
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#ifdef __386__
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extern void __GRO(_w_size_t __size);
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#pragma aux __GRO "*" __parm __routine [];
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#define alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?(__GRO(__ALLOCA_ALIGN(s)),__alloca(s)):NULL)
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#define _alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?(__GRO(__ALLOCA_ALIGN(s)),__alloca(s)):NULL)
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#else
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#define alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?__alloca(s):NULL)
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#define _alloca( s ) ((__ALLOCA_ALIGN(s)<stackavail())?__alloca(s):NULL)
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#endif
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#if defined(__386__)
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#pragma aux __doalloca = \
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"sub esp,eax" \
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__parm __nomemory [__eax] __value [__esp] __modify __exact __nomemory [__esp];
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#elif defined(__SMALL__) || defined(__MEDIUM__) /* small data models */
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#pragma aux __doalloca = \
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"sub sp,ax" \
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__parm __nomemory [__ax] __value [__sp] __modify __exact __nomemory [__sp];
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#else /* large data models */
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#pragma aux __doalloca = \
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"sub sp,ax" \
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"mov ax,sp" \
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"mov dx,ss" \
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__parm __nomemory [__ax] __value [__dx __ax] __modify __exact __nomemory [__dx __ax __sp];
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#endif
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#else
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extern void *__builtin_alloca(_w_size_t __size);
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#pragma intrinsic(__builtin_alloca);
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#define __alloca( s ) (__builtin_alloca(s))
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#define alloca( s ) ((s<stackavail())?__alloca(s):NULL)
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#define _alloca( s ) ((s<stackavail())?__alloca(s):NULL)
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#endif
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif
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