97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* cygwin_dll.h
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef __CYGWIN_CYGWIN_DLL_H__
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#define __CYGWIN_CYGWIN_DLL_H__
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#include <windows.h>
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#ifdef __cplusplus
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#define CDECL_BEGIN extern "C" {
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#define CDECL_END }
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#else
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#define CDECL_BEGIN
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#define CDECL_END
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#endif
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#define DECLARE_CYGWIN_DLL(Entry) \
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\
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CDECL_BEGIN \
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int WINAPI Entry (HINSTANCE h, DWORD reason, void *ptr); \
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typedef int (*mainfunc) (int, char **, char **); \
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extern PVOID cygwin_attach_dll (HMODULE, mainfunc); \
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extern void cygwin_detach_dll (PVOID); \
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CDECL_END \
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\
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static HINSTANCE storedHandle; \
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static DWORD storedReason; \
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static void* storedPtr; \
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int __dynamically_loaded; \
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\
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static int __dllMain (int a __attribute__ ((__unused__)), \
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char **b __attribute__ ((__unused__)), \
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char **c __attribute__ ((__unused__))) \
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{ \
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return Entry (storedHandle, storedReason, storedPtr); \
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} \
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\
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static PVOID dll_index; \
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\
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int WINAPI _cygwin_dll_entry (HINSTANCE h, DWORD reason, void *ptr) \
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{ \
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int ret; \
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ret = 1; \
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\
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switch (reason) \
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{ \
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case DLL_PROCESS_ATTACH: \
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{ \
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storedHandle = h; \
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storedReason = reason; \
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storedPtr = ptr; \
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__dynamically_loaded = (ptr == NULL); \
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dll_index = cygwin_attach_dll (h, &__dllMain); \
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if (dll_index == (PVOID) -1) \
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ret = 0; \
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} \
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break; \
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\
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case DLL_PROCESS_DETACH: \
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{ \
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ret = Entry (h, reason, ptr); \
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if (ret) \
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{ \
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cygwin_detach_dll (dll_index); \
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dll_index = (PVOID) -1; \
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} \
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} \
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break; \
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\
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case DLL_THREAD_ATTACH: \
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{ \
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ret = Entry (h, reason, ptr); \
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} \
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break; \
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\
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case DLL_THREAD_DETACH: \
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{ \
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ret = Entry (h, reason, ptr); \
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} \
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break; \
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} \
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return ret; \
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} \
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\
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/* OBSOLETE: This is only provided for source level compatibility. */ \
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int WINAPI _cygwin_noncygwin_dll_entry (HINSTANCE h, DWORD reason, void *ptr) \
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{ \
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return _cygwin_dll_entry (h, reason, ptr); \
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} \
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#endif /* __CYGWIN_CYGWIN_DLL_H__ */
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