win32ss/user/user32/windows/wndproc_fixup.S

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS user32.dll
   4  * FILE:            win32ss/user/user32/windows/wndproc_fixup.S
   5  * PURPOSE:         Messages
   6  * PROGRAMMER:      Jérôme Gardou jerome.gardou@reactos.org
   7  * LICENCE :        LGPL, copyright Alexandre Julliard
   8  */
   9
  10 #include <asm.inc>
  11 #include <ks386.inc>
  12
  13 /* Some applications provide invalid callbacks which don't follow the stdcall convention */
  14
  15 .code
  16
  17 /*
  18  * LRESULT
  19  * __cdecl
  20  * CALL_EXTERN_WNDPROC(
  21  *     WNDPROC WndProc,
  22  *     HWND hWnd,
  23  *     UINT Msg,
  24  *     WPARAM wParam,
  25  *     LPARAM lParam);
  26  */
  27 PUBLIC _CALL_EXTERN_WNDPROC
  28 FUNC _CALL_EXTERN_WNDPROC
  29     FPO 0, 0, 0, 0, 0, FRAME_FPO
  30
  31     push ebp
  32     mov ebp, esp
  33
  34     push edi
  35     push esi
  36     push ebx
  37
  38     sub esp, 12
  39
  40     push dword ptr [ebp + 24]
  41     push dword ptr [ebp + 20]
  42     push dword ptr [ebp + 16]
  43     push dword ptr [ebp + 12]
  44     mov eax, dword ptr [ebp + 8]
  45
  46     call eax
  47
  48     lea esp, dword ptr [ebp - 12]
  49     pop ebx
  50     pop esi
  51     pop edi
  52
  53     leave
  54     ret
  55
  56 ENDFUNC
  57
  58 END