/GH - Enable _pexit Hook Function (Windows CE 5.0)
This option calls the _pexit function at the end of every method or function. The _pexit function is not part of any library and it is up to you to provide a definition for _pexit.
The /GH option is supported by x86 microprocessors only.
Unless you plan to explicitly call _pexit, you do not need to provide a prototype. The function must appear as if it had the following prototype, and it must push the content of all registers on entry and pop the unchanged content on exit:
void __declspec(naked) _cdecl _pexit( void );
_pexit is similar to _penter; see /Gh - Enable _penter Hook Function for an example of how to write a _pexit function.
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