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
  17 typedef void (*RELAY)();
  18 extern FARPROC THUNK_Alloc( FARPROC16 func, RELAY relay );
  19 extern void THUNK_Free( FARPROC thunk );
  20 extern BOOL THUNK_Init(void);
  21 extern void THUNK_InitCallout(void);
  22
  23
  24 typedef struct
  25 {
  26     BOOL WINAPI     (*PeekMessageA)( LPMSG, HWND, UINT, UINT, UINT );
  27     BOOL WINAPI     (*GetMessageA)( MSG*, HWND, UINT, UINT );
  28     LRESULT WINAPI  (*SendMessageA)( HWND, UINT, WPARAM, LPARAM );
  29     BOOL WINAPI     (*PostMessageA)( HWND, UINT, WPARAM, LPARAM );
  30     BOOL WINAPI     (*TranslateMessage)( const MSG *msg );
  31     LONG WINAPI     (*DispatchMessageA)( const MSG* msg );
  32     BOOL WINAPI     (*RedrawWindow)( HWND, const RECT *, HRGN, UINT );
  33     WORD WINAPI     (*UserSignalProc)( UINT, DWORD, DWORD, HMODULE16 );
  34     void WINAPI     (*FinalUserInit16)( void );
  35     HQUEUE16 WINAPI (*InitThreadInput16)( WORD, WORD );
  36     void WINAPI     (*UserYield16)( void );
  37     WORD WINAPI     (*DestroyIcon32)( HGLOBAL16, UINT16 );
  38     DWORD WINAPI    (*WaitForInputIdle)( HANDLE, DWORD );
  39     DWORD WINAPI    (*MsgWaitForMultipleObjects)( DWORD, HANDLE *, BOOL, DWORD, DWORD );
  40     HWND WINAPI     (*WindowFromDC)( HDC );
  41     INT WINAPI      (*MessageBoxA)( HWND, LPCSTR, LPCSTR, UINT );
  42     INT WINAPI      (*MessageBoxW)( HWND, LPCWSTR, LPCWSTR, UINT );
  43 }  CALLOUT_TABLE;
  44
  45 extern CALLOUT_TABLE Callout;
  46
  47
  48 typedef struct {
  49     struct _DOSTASK* WINAPI (*Current)( void );
  50     struct _DOSTASK* WINAPI (*LoadDPMI)( void );
  51     void WINAPI             (*LoadDosExe)( LPCSTR filename, HANDLE hFile );
  52     BOOL WINAPI             (*Exec)( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk );
  53     void WINAPI             (*Exit)( CONTEXT86 *context, BOOL cs_psp, WORD retval );
  54     int WINAPI              (*Enter)( CONTEXT86 *context );
  55     void WINAPI             (*Wait)( int read_pipe, HANDLE hObject );
  56     void WINAPI             (*QueueEvent)( int irq, int priority, void (*relay)(CONTEXT86*,void*), void *data );
  57     void WINAPI             (*OutPIC)( WORD port, BYTE val );
  58     void WINAPI             (*SetTimer)( unsigned ticks );
  59     unsigned WINAPI         (*GetTimer)( void );
  60 } DOSVM_TABLE;
  61
  62 extern DOSVM_TABLE Dosvm;
  63
  64
  65 #include "pshpack1.h"
  66
  67 typedef struct tagTHUNK
  68 {
  69     BYTE             popl_eax;           /* 0x58  popl  %eax (return address)*/
  70     BYTE             pushl_func;         /* 0x68  pushl $proc */
  71     FARPROC16        proc WINE_PACKED;
  72     BYTE             pushl_eax;          /* 0x50  pushl %eax */
  73     BYTE             jmp;                /* 0xe9  jmp   relay (relative jump)*/
  74     RELAY            relay WINE_PACKED;
  75     struct tagTHUNK *next WINE_PACKED;
  76     DWORD            magic;
  77 } THUNK;
  78
  79 #include "poppack.h"
  80
  81 #define CALLTO16_THUNK_MAGIC 0x54484e4b   /* "THNK" */
  82
  83 #define DECL_THUNK(aname,aproc,arelay) \
  84     THUNK aname; \
  85     aname.popl_eax = 0x58; \
  86     aname.pushl_func = 0x68; \
  87     aname.proc = (FARPROC16) (aproc); \
  88     aname.pushl_eax = 0x50; \
  89     aname.jmp = 0xe9; \
  90     aname.relay = (RELAY)((char *)(arelay) - (char *)(&(aname).next)); \
  91     aname.next = NULL; \
  92     aname.magic = CALLTO16_THUNK_MAGIC;
  93
  94 #endif /* __WINE_CALLBACK_H */