if1632/callback.c

   1 #ifndef WINELIB
   2 /*
   3 static char RCSId[] = "$Id: wine.c,v 1.2 1993/07/04 04:04:21 root Exp root $";
   4 static char Copyright[] = "Copyright  Robert J. Amstadt, 1993";
   5 */
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include "windows.h"
  10 #include "callback.h"
  11 #include "stackframe.h"
  12 #include "win.h"
  13 #include "stddebug.h"
  14 #include "debug.h"
  15
  16
  17
  18 /**********************************************************************
  19  *           CallWindowProc    (USER.122)
  20  */
  21 LONG CallWindowProc( WNDPROC func, HWND hwnd, WORD message,
  22                      WORD wParam, LONG lParam )
  23 {
  24     WND *wndPtr = WIN_FindWndPtr( hwnd );
  25
  26     if (!wndPtr) return 0;
  27     SpyMessage(hwnd, message, wParam, lParam);
  28     return CallWndProc( (FARPROC)func, wndPtr->hInstance,
  29                         hwnd, message, wParam, lParam );
  30 }
  31
  32
  33 /**********************************************************************
  34  *           Catch    (KERNEL.55)
  35  */
  36 int Catch( LPCATCHBUF lpbuf )
  37 {
  38     STACK16FRAME *pFrame = CURRENT_STACK16;
  39
  40     dprintf_catch( stddeb, "Catch: buf=%p ss:sp=%04x:%04x\n",
  41                    lpbuf, IF1632_Saved16_ss, IF1632_Saved16_sp );
  42
  43     /* Note: we don't save the current ss, as the catch buffer is */
  44     /* only 9 words long. Hopefully no one will have the silly    */
  45     /* idea to change the current stack before calling Throw()... */
  46
  47     lpbuf[0] = IF1632_Saved16_sp;
  48     lpbuf[1] = LOWORD(IF1632_Saved32_esp);
  49     lpbuf[2] = HIWORD(IF1632_Saved32_esp);
  50     lpbuf[3] = pFrame->saved_ss;
  51     lpbuf[4] = pFrame->saved_sp;
  52     lpbuf[5] = pFrame->ds;
  53     lpbuf[6] = pFrame->bp;
  54     lpbuf[7] = pFrame->ip;
  55     lpbuf[8] = pFrame->cs;
  56     return 0;
  57 }
  58
  59
  60 /**********************************************************************
  61  *           Throw    (KERNEL.56)
  62  */
  63 int Throw( LPCATCHBUF lpbuf, int retval )
  64 {
  65     STACK16FRAME *pFrame;
  66
  67     dprintf_catch( stddeb, "Throw: buf=%p val=%04x ss:sp=%04x:%04x\n",
  68                    lpbuf, retval, IF1632_Saved16_ss, IF1632_Saved16_sp );
  69
  70     IF1632_Saved16_sp  = lpbuf[0] - sizeof(WORD);
  71     IF1632_Saved32_esp = MAKELONG( lpbuf[1], lpbuf[2] );
  72     pFrame = CURRENT_STACK16;
  73     pFrame->saved_ss   = lpbuf[3];
  74     pFrame->saved_sp   = lpbuf[4];
  75     pFrame->ds         = lpbuf[5];
  76     pFrame->bp         = lpbuf[6];
  77     pFrame->ip         = lpbuf[7];
  78     pFrame->cs         = lpbuf[8];
  79     return retval;
  80 }
  81
  82
  83 #endif /* !WINELIB */