misc/callback.c

   1 /*
   2  * Function callbacks for the library
   3  *
   4  * Copyright 1997 Alexandre Julliard
   5  */
   6
   7 #include <assert.h>
   8 #include "debug.h"
   9 #include "windows.h"
  10 #include "callback.h"
  11 #include "task.h"
  12 #include "syslevel.h"
  13
  14
  15 /**********************************************************************
  16  *           CALLBACK_CallWndProc
  17  */
  18 static LRESULT WINAPI CALLBACK_CallWndProc( WNDPROC16 proc, HWND16 hwnd,
  19                                             UINT16 msg, WPARAM16 wParam,
  20                                             LPARAM lParam )
  21 {
  22     return proc( hwnd, msg, wParam, lParam );
  23 }
  24
  25
  26 /**********************************************************************
  27  *           CALLBACK_CallRegisterProc
  28  */
  29 static LONG WINAPI CALLBACK_CallRegisterProc( CONTEXT *context, INT32 offset)
  30 {
  31     ERR(relay, "Cannot call a register proc in Winelib\n" );
  32     assert( FALSE );
  33     return 0;
  34 }
  35
  36
  37 /**********************************************************************
  38  *           CALLBACK_CallDriverProc
  39  */
  40 static LRESULT WINAPI CALLBACK_CallDriverProc( DRIVERPROC16 proc, DWORD dwId,
  41                                                HDRVR16 hdrvr, UINT16 msg,
  42                                                LPARAM lp1, LPARAM lp2 )
  43 {
  44     return proc( dwId, hdrvr, msg, lp1, lp2 );
  45 }
  46
  47
  48 /**********************************************************************
  49  *           CALLBACK_CallDriverCallback
  50  */
  51 static LRESULT WINAPI CALLBACK_CallDriverCallback( FARPROC16 proc,
  52                                                    HANDLE16 hDev, UINT16 msg,
  53                                                    DWORD dwUser, LPARAM lp1,
  54                                                    LPARAM lp2 )
  55 {
  56     return proc( hDev, msg, dwUser, lp1, lp2 );
  57 }
  58
  59
  60 /**********************************************************************
  61  *           CALLBACK_CallTimeFuncProc
  62  */
  63 static LRESULT WINAPI CALLBACK_CallTimeFuncProc( FARPROC16 proc, WORD id,
  64                                                  UINT16 msg, DWORD dwUser,
  65                                                  LPARAM lp1, LPARAM lp2 )
  66 {
  67     return proc( id, msg, dwUser, lp1, lp2 );
  68 }
  69
  70
  71 /**********************************************************************
  72  *           CALLBACK_CallWindowsExitProc
  73  */
  74 static INT16 WINAPI CALLBACK_CallWindowsExitProc( FARPROC16 proc, INT16 type)
  75 {
  76     return proc( type );
  77 }
  78
  79
  80 /**********************************************************************
  81  *           CALLBACK_CallWordBreakProc
  82  */
  83 static INT16 WINAPI CALLBACK_CallWordBreakProc( EDITWORDBREAKPROC16 proc,
  84                                                 SEGPTR text, INT16 word,
  85                                                 INT16 len, INT16 action )
  86 {
  87     return proc( (LPSTR)text, word, len, action );
  88 }
  89
  90
  91 /**********************************************************************
  92  *           CALLBACK_CallBootAppProc
  93  */
  94 static void WINAPI CALLBACK_CallBootAppProc( FARPROC16 proc, HANDLE16 module,
  95                                              HFILE16 file )
  96 {
  97     proc( module, file );
  98 }
  99
 100
 101 /**********************************************************************
 102  *           CALLBACK_CallLoadAppSegProc
 103  */
 104 static WORD WINAPI CALLBACK_CallLoadAppSegProc( FARPROC16 proc,
 105                                                 HANDLE16 module, HFILE16 file,
 106                                                 WORD seg )
 107 {
 108     return proc( module, file, seg );
 109 }
 110
 111
 112 /**********************************************************************
 113  *           CALLBACK_CallLocalNotifyFunc
 114  */
 115 static WORD WINAPI CALLBACK_CallLocalNotifyFunc( FARPROC16 proc,
 116                                                  WORD wMsg, HLOCAL16 hMem,
 117                                                  WORD wArg )
 118 {
 119     return proc( wMsg, hMem, wArg );
 120 }
 121
 122
 123 /**********************************************************************
 124  *           CALLBACK_CallResourceHandlerProc
 125  */
 126 static HGLOBAL16 WINAPI CALLBACK_CallResourceHandlerProc( FARPROC16 proc,
 127                                                           HGLOBAL16 hMemObj,
 128                                                           HMODULE16 hModule,
 129                                                           HRSRC16 hRsrc )
 130 {
 131     return proc( hMemObj, hModule, hRsrc );
 132 }
 133
 134
 135 /**********************************************************************
 136  *           CALLBACK_CallASPIPostProc
 137  */
 138 static LRESULT WINAPI CALLBACK_CallASPIPostProc( FARPROC16 proc, SEGPTR ptr )
 139 {
 140     return proc( ptr );
 141 }
 142
 143
 144 /**********************************************************************
 145  *           CALLBACK_CallWOWCallbackProc
 146  */
 147 static DWORD WINAPI CALLBACK_CallWOWCallbackProc( FARPROC16 proc, DWORD dw )
 148 {
 149     return proc( dw );
 150 }
 151
 152 /**********************************************************************
 153  *           CALLBACK_CallWOWCallback16Ex
 154  *
 155  * WCB16_MAX_CBARGS (16) is the maximum number of args.
 156  *
 157  * Can call functions using CDECL or PASCAL calling conventions. The CDECL
 158  * ones are reversed (not 100% sure about that).
 159  */
 160 static BOOL32 WINAPI CALLBACK_CallWOWCallback16Ex(
 161         FARPROC16 proc, DWORD dwFlags, DWORD cbArgs, LPVOID xargs,LPDWORD pdwret
 162 ) {
 163     LPDWORD     args = (LPDWORD)xargs;
 164     DWORD       ret,i;
 165
 166     if (dwFlags == WCB16_CDECL) {
 167         /* swap the arguments */
 168         args = HeapAlloc(GetProcessHeap(),0,cbArgs*sizeof(DWORD));
 169         for (i=0;i<cbArgs;i++)
 170                 args[i] = ((DWORD*)xargs)[cbArgs-i-1];
 171     }
 172     switch (cbArgs) {
 173     case 0: ret = proc();break;
 174     case 1: ret = proc(args[0]);break;
 175     case 2: ret = proc(args[0],args[1]);break;
 176     case 3: ret = proc(args[0],args[1],args[2]);break;
 177     case 4: ret = proc(args[0],args[1],args[2],args[3]);break;
 178     case 5: ret = proc(args[0],args[1],args[2],args[3],args[4]);break;
 179     case 6: ret = proc(args[0],args[1],args[2],args[3],args[4],args[5]);
 180             break;
 181     case 7: ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 182                     args[6]
 183             );
 184             break;
 185     case 8: ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 186                     args[6],args[7]
 187             );
 188             break;
 189     case 9: ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 190                     args[6],args[7],args[8]
 191             );
 192             break;
 193     case 10:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 194                     args[6],args[7],args[8],args[9]
 195             );
 196             break;
 197     case 11:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 198                     args[6],args[7],args[8],args[9],args[10]
 199             );
 200             break;
 201     case 12:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 202                     args[6],args[7],args[8],args[9],args[10],args[11]
 203             );
 204             break;
 205     case 13:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 206                     args[6],args[7],args[8],args[9],args[10],args[11],
 207                     args[12]
 208             );
 209             break;
 210     case 14:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 211                     args[6],args[7],args[8],args[9],args[10],args[11],
 212                     args[12],args[13]
 213             );
 214             break;
 215     case 15:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 216                     args[6],args[7],args[8],args[9],args[10],args[11],
 217                     args[12],args[13],args[14]
 218             );
 219             break;
 220     case 16:ret = proc(args[0],args[1],args[2],args[3],args[4],args[5],
 221                     args[6],args[7],args[8],args[9],args[10],args[11],
 222                     args[12],args[13],args[14],args[15]
 223             );
 224             break;
 225     default:
 226             WARN(relay,"(%ld) arguments not supported.\n",cbArgs);
 227             if (dwFlags == WCB16_CDECL)
 228                 HeapFree(GetProcessHeap(),0,args);
 229             return FALSE;
 230     }
 231     if (dwFlags == WCB16_CDECL)
 232         HeapFree(GetProcessHeap(),0,args);
 233     if (pdwret)
 234         *pdwret = ret;
 235     return TRUE;
 236 }
 237
 238 /**********************************************************************
 239  *           CALLBACK_CallTaskRescheduleProc
 240  */
 241 static BOOL32 WINAPI CALLBACK_CallTaskRescheduleProc( void )
 242 {
 243     BOOL32 pending;
 244
 245     SYSLEVEL_EnterWin16Lock();
 246     pending = TASK_Reschedule();
 247     SYSLEVEL_LeaveWin16Lock();
 248
 249     return pending;
 250 }
 251
 252
 253 /**********************************************************************
 254  *           CALLBACK_WinelibTable
 255  *
 256  * The callbacks function table for Winelib
 257  */
 258 static const CALLBACKS_TABLE CALLBACK_WinelibTable =
 259 {
 260     CALLBACK_CallRegisterProc,        /* CallRegisterShortProc */
 261     CALLBACK_CallRegisterProc,        /* CallRegisterLongProc */
 262     CALLBACK_CallTaskRescheduleProc,  /* CallTaskRescheduleProc */
 263     NULL,                             /* CallFrom16WndProc */
 264     CALLBACK_CallWndProc,             /* CallWndProc */
 265     CALLBACK_CallDriverProc,          /* CallDriverProc */
 266     CALLBACK_CallDriverCallback,      /* CallDriverCallback */
 267     CALLBACK_CallTimeFuncProc,        /* CallTimeFuncProc */
 268     CALLBACK_CallWindowsExitProc,     /* CallWindowsExitProc */
 269     CALLBACK_CallWordBreakProc,       /* CallWordBreakProc */
 270     CALLBACK_CallBootAppProc,         /* CallBootAppProc */
 271     CALLBACK_CallLoadAppSegProc,      /* CallLoadAppSegProc */
 272     CALLBACK_CallLocalNotifyFunc,     /* CallLocalNotifyFunc */
 273     CALLBACK_CallResourceHandlerProc, /* CallResourceHandlerProc */
 274     NULL,                             /* CallPostAppMessageProc */
 275     CALLBACK_CallWOWCallbackProc,     /* CallWOWCallbackProc */
 276     CALLBACK_CallWOWCallback16Ex,     /* CallWOWCallback16Ex */
 277     CALLBACK_CallASPIPostProc,        /* CallASPIPostProc */
 278     /* The graphics driver callbacks are never used in Winelib */
 279     NULL,                             /* CallDrvControlProc */
 280     NULL,                             /* CallDrvEnableProc */
 281     NULL,                             /* CallDrvEnumDFontsProc */
 282     NULL,                             /* CallDrvEnumObjProc */
 283     NULL,                             /* CallDrvOutputProc */
 284     NULL,                             /* CallDrvRealizeProc */
 285     NULL,                             /* CallDrvStretchBltProc */
 286     NULL,                             /* CallDrvExtTextOutProc */
 287     NULL,                             /* CallDrvGetCharWidth */
 288     NULL                              /* CallDrvAbortProc */
 289 };
 290
 291 const CALLBACKS_TABLE *Callbacks = &CALLBACK_WinelibTable;
 292
 293