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* New nmake file w3i6pc.nmk. * New stack scanner ssw3i6pc.c supplies missing jump buffer definition. * Some platform tests change from defined(MPS_PF_W3I6MV) to defined(MPS_OS_w3) && defined(MPS_ARCH_I6). * Make reasonable changes to the source code to avoid warnings from Pelles C: ** Ensure that printf formats are consistent with arguments by using PRIuLONGEST and casting to ulongest_t. ** Use size_t for loop variables that index into arrays. ** Suppress "Consider changing type to 'size_t' for loop variable" warnings for the MPS core. Copied from Perforce Change: 184996 ServerID: perforce.ravenbrook.com
68 lines
3 KiB
C
68 lines
3 KiB
C
/* spw3i6.c: STACK PROBE FOR 64-BIT WINDOWS
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*
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* $Id$
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* Copyright (c) 2013 Ravenbrook Limited. See end of file for license.
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*
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* The function StackProbe ensures that the stack has at least depth
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* words available. It achieves this by exploiting an obscure but
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* documented feature of Microsoft's function _alloca: "A stack
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* overflow exception is generated if the space cannot be allocated."
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* _alloca: http://msdn.microsoft.com/en-us/library/wb1s57t5.aspx
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*
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* The purpose of this function to ensure that the stack overflow
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* exception is generated here (before taking the arena lock) where it
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* can be handled safely rather than at some later point where the
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* arena lock is held and so handling the exception may cause the MPS
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* to be entered recursively.
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*/
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#include <stdlib.h> /* _alloca */
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#include "mpm.h"
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void StackProbe(Size depth)
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{
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(void)_alloca(depth*sizeof(Word));
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}
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2013 Ravenbrook Limited <http://www.ravenbrook.com/>.
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* All rights reserved. This is an open source license. Contact
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* Ravenbrook for commercial licensing options.
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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 are
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* met:
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*
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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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*
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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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*
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* 3. Redistributions in any form must be accompanied by information on how
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* to obtain complete source code for this software and any accompanying
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* software that uses this software. The source code must either be
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* included in the distribution or be available for no more than the cost
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* of distribution plus a nominal fee, and must be freely redistributable
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* under reasonable conditions. For an executable file, complete source
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* code means the source code for all modules it contains. It does not
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* include source code for modules or files that typically accompany the
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* major components of the operating system on which the executable file
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* runs.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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* PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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