Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/crt/except/stack.c

@@ -0,0 +1,45 @@
+#include <precomp.h>
+
+/*********************************************************************
+*              _chkesp (MSVCRT.@)
+*
+* Trap to a debugger if the value of the stack pointer has changed.
+*
+* PARAMS
+*  None.
+*
+* RETURNS
+*  Does not return.
+*
+* NOTES
+*  This function is available for iX86 only.
+*
+*  When VC++ generates debug code, it stores the value of the stack pointer
+*  before calling any external function, and checks the value following
+*  the call. It then calls this function, which will trap if the values are
+*  not the same. Usually this means that the prototype used to call
+*  the function is incorrect.  It can also mean that the .spec entry has
+*  the wrong calling convention or parameters.
+*/
+
+#ifdef __i386__
+
+void _chkesp_failed(void)
+{
+    ERR("stack got corrupted!\n");
+    __debugbreak();
+}
+
+#endif  /* __i386__ */
+
+/*********************************************************************
+ * _resetstkoflw (MSVCRT.@)
+ */
+int CDECL _resetstkoflw(void)
+{
+    int stack_addr;
+    DWORD oldprot;
+
+    /* causes stack fault that updates NtCurrentTeb()->Tib.StackLimit */
+    return VirtualProtect(&stack_addr, 1, PAGE_GUARD|PAGE_READWRITE, &oldprot);
+}