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#include <cygwin/version.h>
#if CYGWIN_VERSION_DLL_MAJOR < 1001
/* dllinit.c -- Portable DLL initialization.
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Mumit Khan (khan@xraylith.wisc.edu).
I've used DllMain as the DLL "main" since that's the most common
usage. MSVC and Mingw32 both default to DllMain as the standard
callback from the linker entry point. Cygwin32 b19+ uses essentially
the same, albeit slightly differently implemented, scheme. Please
see DECLARE_CYGWIN_DLL macro in <cygwin32/cygwin_dll.h> for more
info on how Cygwin32 uses the callback function.
The real entry point is typically always defined by the runtime
library, and usually never overridden by (casual) user. What you can
override however is the callback routine that the entry point calls,
and this file provides such a callback function, DllMain.
Mingw32: The default entry point for mingw32 is DllMainCRTStartup
which is defined in libmingw32.a This in turn calls DllMain which is
defined here. If not defined, there is a stub in libmingw32.a which
does nothing.
Cygwin32: The default entry point for cygwin32 b19 or newer is
__cygwin32_dll_entry which is defined in libcygwin.a. This in turn
calls the routine you supply to the DECLARE_CYGWIN_DLL (see below)
and, for this example, I've chose DllMain to be consistent with all
the other platforms.
MSVC: MSVC runtime calls DllMain, just like Mingw32.
Summary: If you need to do anything special in DllMain, just add it
here. Otherwise, the default setup should be just fine for 99%+ of
the time. I strongly suggest that you *not* change the entry point,
but rather change DllMain as appropriate.
*/
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <stdio.h>
BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason,
LPVOID reserved /* Not used. */ );
#ifdef __CYGWIN__
#include <cygwin/cygwin_dll.h>
DECLARE_CYGWIN_DLL(DllMain);
/* save hInstance from DllMain */
HINSTANCE __hDllInstance_base;
#endif /* __CYGWIN__ */
struct _reent *_impure_ptr;
extern struct _reent *__imp_reent_data;
/*
*----------------------------------------------------------------------
*
* DllMain
*
* This routine is called by the Mingw32, Cygwin32 or VC++ C run
* time library init code, or the Borland DllEntryPoint routine. It
* is responsible for initializing various dynamically loaded
* libraries.
*
* Results:
* TRUE on sucess, FALSE on failure.
*
* Side effects:
*
*----------------------------------------------------------------------
*/
BOOL APIENTRY
DllMain(
HINSTANCE hInst /* Library instance handle. */ ,
DWORD reason /* Reason this function is being called. */ ,
LPVOID reserved /* Not used. */ )
{
#ifdef __CYGWIN__
__hDllInstance_base = hInst;
#endif /* __CYGWIN__ */
_impure_ptr = __imp_reent_data;
switch (reason)
{
case DLL_PROCESS_ATTACH:
break;
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
}
return TRUE;
}
#endif /* CYGWIN_VERSION_DLL_MAJOR < 1001 */
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