stackwnt.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 69 行

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  Dummy stack check routines for non-x86 Win32 platforms.
*
****************************************************************************/


#include "variety.h"
#include "rtdata.h"
#include "stacklow.h"
#include "exitwmsg.h"

#if defined(__AXP__) || defined(__PPC__)
void _init_stk( void )
{
}

_WCRTLINK unsigned __CHK( unsigned i )
{
    return( i );
}

_WCRTLINK void __GRO( unsigned i )
{
    i = i;
}

_WCRTLINK void __STKOVERFLOW( void )
{
    __fatal_runtime_error( "stack overflow", -1 );
}
#endif

_WCRTLINK unsigned stackavail()
{
#if defined(__AXP__) || defined(__PPC__)
    unsigned    _SP;

    _SP = (unsigned)&_SP;
    return( _SP - _RWD_stacklow );
#else
    return( _SP() - _RWD_stacklow );
#endif
}