include/callback.h

   1 /*
   2  * Callback functions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_CALLBACK_H
   8 #define __WINE_CALLBACK_H
   9
  10 #include "windef.h"
  11 #include "winnt.h"
  12 #include "wingdi.h"
  13 #include "wine/winuser16.h"
  14
  15 extern void SYSDEPS_SwitchToThreadStack( void (*func)(void) ) WINE_NORETURN;
  16 extern int SYSDEPS_CallOnLargeStack( int (*func)(void *), void *arg );
  17
  18 #define CALL_LARGE_STACK( func, arg ) \
  19         SYSDEPS_CallOnLargeStack( (int (*)(void *))(func), (void *)(arg) )
  20
  21 typedef void (*RELAY)();
  22 extern FARPROC THUNK_Alloc( FARPROC16 func, RELAY relay );
  23 extern void THUNK_Free( FARPROC thunk );
  24 extern BOOL THUNK_Init(void);
  25 extern void THUNK_InitCallout(void);
  26
  27
  28 typedef struct
  29 {
  30     BOOL WINAPI     (*PeekMessageA)( LPMSG, HWND, UINT, UINT, UINT );
  31     BOOL WINAPI     (*GetMessageA)( MSG*, HWND, UINT, UINT );
  32     LRESULT WINAPI  (*SendMessageA)( HWND, UINT, WPARAM, LPARAM );
  33     BOOL WINAPI     (*PostMessageA)( HWND, UINT, WPARAM, LPARAM );
  34     BOOL16 WINAPI   (*PostAppMessage16)( HTASK16, UINT16, WPARAM16, LPARAM );
  35     BOOL WINAPI     (*TranslateMessage)( const MSG *msg );
  36     LONG WINAPI     (*DispatchMessageA)( const MSG* msg );
  37     BOOL WINAPI     (*RedrawWindow)( HWND, const RECT *, HRGN, UINT );
  38     WORD WINAPI     (*UserSignalProc)( UINT, DWORD, DWORD, HMODULE16 );
  39     void WINAPI     (*FinalUserInit16)( void );
  40     HQUEUE16 WINAPI (*InitThreadInput16)( WORD, WORD );
  41     void WINAPI     (*UserYield16)( void );
  42     WORD WINAPI     (*DestroyIcon32)( HGLOBAL16, UINT16 );
  43     DWORD WINAPI    (*WaitForInputIdle)( HANDLE, DWORD );
  44     DWORD WINAPI    (*MsgWaitForMultipleObjects)( DWORD, HANDLE *, BOOL, DWORD, DWORD );
  45     HWND WINAPI     (*WindowFromDC)( HDC );
  46     INT WINAPI      (*MessageBoxA)( HWND, LPCSTR, LPCSTR, UINT );
  47     INT WINAPI      (*MessageBoxW)( HWND, LPCWSTR, LPCWSTR, UINT );
  48 }  CALLOUT_TABLE;
  49
  50 extern CALLOUT_TABLE Callout;
  51
  52 #include "pshpack1.h"
  53
  54 typedef struct tagTHUNK
  55 {
  56     BYTE             popl_eax;           /* 0x58  popl  %eax (return address)*/
  57     BYTE             pushl_func;         /* 0x68  pushl $proc */
  58     FARPROC16        proc WINE_PACKED;
  59     BYTE             pushl_eax;          /* 0x50  pushl %eax */
  60     BYTE             jmp;                /* 0xe9  jmp   relay (relative jump)*/
  61     RELAY            relay WINE_PACKED;
  62     struct tagTHUNK *next WINE_PACKED;
  63     DWORD            magic;
  64 } THUNK;
  65
  66 #include "poppack.h"
  67
  68 #define CALLTO16_THUNK_MAGIC 0x54484e4b   /* "THNK" */
  69
  70 #define DECL_THUNK(aname,aproc,arelay) \
  71     THUNK aname; \
  72     aname.popl_eax = 0x58; \
  73     aname.pushl_func = 0x68; \
  74     aname.proc = (FARPROC) (aproc); \
  75     aname.pushl_eax = 0x50; \
  76     aname.jmp = 0xe9; \
  77     aname.relay = (RELAY)((char *)(arelay) - (char *)(&(aname).next)); \
  78     aname.next = NULL; \
  79     aname.magic = CALLTO16_THUNK_MAGIC;
  80
  81 #endif /* __WINE_CALLBACK_H */