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46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#include <precomp.h>
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/*********************************************************************
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* _chkesp (MSVCRT.@)
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*
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* Trap to a debugger if the value of the stack pointer has changed.
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*
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* PARAMS
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* None.
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*
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* RETURNS
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* Does not return.
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*
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* NOTES
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* This function is available for iX86 only.
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*
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* When VC++ generates debug code, it stores the value of the stack pointer
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* before calling any external function, and checks the value following
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* the call. It then calls this function, which will trap if the values are
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* not the same. Usually this means that the prototype used to call
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* the function is incorrect. It can also mean that the .spec entry has
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* the wrong calling convention or parameters.
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*/
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#ifdef __i386__
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void _chkesp_failed(void)
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{
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ERR("stack got corrupted!\n");
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__debugbreak();
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}
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#endif /* __i386__ */
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/*********************************************************************
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* _resetstkoflw (MSVCRT.@)
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*/
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int CDECL _resetstkoflw(void)
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{
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int stack_addr;
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DWORD oldprot;
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/* causes stack fault that updates NtCurrentTeb()->Tib.StackLimit */
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return VirtualProtect(&stack_addr, 1, PAGE_GUARD|PAGE_READWRITE, &oldprot);
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}
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