windos: fix EXTENDED COUNTRY INFORMATION

[Markus Amsler]

Alexandre Julliard writes:
 > But I suspect that a real DOS emulator may be a better choice for 
your app than Wine.

Yeah, perhaps. But it's more a learning/fun project, so I continue 
sending patches.
Btw none of the real DOS emulators I tried (dosemu, dosbox) ran the app 
out of the box.

Changelog:
* respect given buffer size in GET EXTENDED COUNTRY INFORMATION

-------------- next part --------------
*** wine/dlls/winedos/int21.c	Tue Aug 24 17:45:23 2004
--- wine-20040615/dlls/winedos/int21.c	Fri Aug  6 11:57:04 2004
***************
*** 2116,2123 ****
  static void INT21_ExtendedCountryInformation( CONTEXT86 *context )
  {
      BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi );
!     BYTE buffsize = CX_reg (context);
!     
      TRACE( "GET EXTENDED COUNTRY INFORMATION, subfunction %02x\n",
             AL_reg(context) );
  
--- 1858,1864 ----
  static void INT21_ExtendedCountryInformation( CONTEXT86 *context )
  {
      BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, context->SegEs, context->Edi );
! 
      TRACE( "GET EXTENDED COUNTRY INFORMATION, subfunction %02x\n",
             AL_reg(context) );
  
***************
*** 2148,2160 ****
          *(WORD*)(dataptr+1) = 38; /* Size of the following info */
          *(WORD*)(dataptr+3) = INT21_GetSystemCountryCode(); /* Country ID */
          *(WORD*)(dataptr+5) = GetOEMCP(); /* Code page */
!         if (buffsize >= 0x29){
!             /* FIXME: fill buffer partially up to buffsize bytes*/
!             INT21_FillCountryInformation( dataptr + 7 );
!             SET_CX( context, 0x29 ); /* Size of returned info */
!         }else{
!             SET_CX( context, 0x07 ); /* Size of returned info */        
!         }
          break;
          
      case 0x02: /* GET POINTER TO UPPERCASE TABLE */
--- 1889,1896 ----
          *(WORD*)(dataptr+1) = 38; /* Size of the following info */
          *(WORD*)(dataptr+3) = INT21_GetSystemCountryCode(); /* Country ID */
          *(WORD*)(dataptr+5) = GetOEMCP(); /* Code page */
!         INT21_FillCountryInformation( dataptr + 7 );
!         SET_CX( context, 41 ); /* Size of returned info */
          break;