/* spw3i3.c: STACK PROBE FOR 32-BIT WINDOWS
*
* $Id: //info.ravenbrook.com/project/mps/master/code/spw3i3.c#7 $
* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
* Portions copyright (C) 2001 Global Graphics Software.
*
* This function reads a location that is depth words beyond the
* current stack pointer. On Intel platforms, the stack grows
* downwards, so this means reading from a location with a lesser
* address.
*/
#include "mpm.h"
#if !defined(MPS_OS_W3) || !defined(MPS_ARCH_I3)
#error "spw3i3.c is specific to MPS_OS_W3 and MPS_ARCH_I3"
#endif
#ifdef MPS_BUILD_PC
/* "[ISO] Inline assembly code is not portable." */
#pragma warn(disable: 2007)
#endif /* MPS_BUILD_PC */
void StackProbe(Size depth)
{
__asm {
mov eax, depth
neg eax
mov eax, [esp+eax*4] /* do the actual probe */
}
}
/* C. COPYRIGHT AND LICENSE
*
* Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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