int21 move a0

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This patch prepares the floor for the moving of funcitons of int21 to
winedos.

ChangeLog:
 * dlls/winedos/int21.c
   Only check if were in Win16 mode in functions that realy need it.

nog.

Index: dlls/winedos/int21.c
===================================================================
RCS file: /home/wine/wine/dlls/winedos/int21.c,v
retrieving revision 1.15
diff -u -r1.15 int21.c
--- dlls/winedos/int21.c	6 Nov 2002 19:57:49 -0000	1.15
+++ dlls/winedos/int21.c	9 Nov 2002 09:43:44 -0000
@@ -78,11 +78,6 @@
 {
     BYTE ascii;
 
-    if (DOSVM_IsWin16()) {
-        DOS3Call( context );
-        return;
-    }
-
     RESET_CFLAG(context);  /* Not sure if this is a good idea */
 
     if(AH_reg(context) == 0x0c) /* FLUSH BUFFER AND READ STANDARD INPUT */
@@ -105,7 +100,8 @@
     {
     case 0x00: /* TERMINATE PROGRAM */
         TRACE("TERMINATE PROGRAM\n");
-        MZ_Exit( context, FALSE, 0 );
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else MZ_Exit( context, FALSE, 0 );
         break;
 
     case 0x01: /* READ CHARACTER FROM STANDARD INPUT, WITH ECHO */
@@ -176,13 +172,17 @@
         break;
 
     case 0x25: /* SET INTERRUPT VECTOR */
-        DOSVM_SetRMHandler( AL_reg(context),
-                            (FARPROC16)MAKESEGPTR( context->SegDs, DX_reg(context)));
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else
+            DOSVM_SetRMHandler( AL_reg(context), 
+                               (FARPROC16)MAKESEGPTR( context->SegDs,
+                                                     DX_reg(context)));
         break;
 
     case 0x35: /* GET INTERRUPT VECTOR */
         TRACE("GET INTERRUPT VECTOR 0x%02x\n",AL_reg(context));
-        {
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else {
             FARPROC16 addr = DOSVM_GetRMHandler( AL_reg(context) );
             context->SegEs = SELECTOROF(addr);
             SET_BX( context, OFFSETOF(addr) );
@@ -209,17 +209,22 @@
 
     case 0x4b: /* "EXEC" - LOAD AND/OR EXECUTE PROGRAM */
         TRACE("EXEC %s\n", (LPCSTR)CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx ));
-        if (!MZ_Exec( context, CTX_SEG_OFF_TO_LIN(context, context->SegDs, context->Edx),
-                      AL_reg(context), CTX_SEG_OFF_TO_LIN(context, context->SegEs, context->Ebx) ))
-        {
-            SET_AX( context, GetLastError() );
-            SET_CFLAG(context);
-        }
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else
+            if(!MZ_Exec(context, CTX_SEG_OFF_TO_LIN(context, context->SegDs,
+                         context->Edx), AL_reg(context),
+                         CTX_SEG_OFF_TO_LIN(context, context->SegEs,
+                                            context->Ebx)))
+            {
+                SET_AX(context, GetLastError());
+                SET_CFLAG(context);
+            }
         break;
 
     case 0x4c: /* "EXIT" - TERMINATE WITH RETURN CODE */
         TRACE("EXIT with return code %d\n",AL_reg(context));
-        MZ_Exit( context, FALSE, AL_reg(context) );
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else MZ_Exit( context, FALSE, AL_reg(context) );
         break;
 
     case 0x4d: /* GET RETURN CODE */
@@ -237,11 +242,14 @@
         TRACE("GET CURRENT PROCESS ID (GET PSP ADDRESS)\n");
         /* FIXME: should we return the original DOS PSP upon */
         /*        Windows startup ? */
-        SET_BX( context, DOSVM_psp );
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else SET_BX( context, DOSVM_psp );
         break;
 
     case 0x52: /* "SYSVARS" - GET LIST OF LISTS */
         TRACE("SYSVARS - GET LIST OF LISTS\n");
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else
         {
             context->SegEs = HIWORD(DOS_LOLSeg);
             SET_BX( context, FIELD_OFFSET(DOS_LISTOFLISTS, ptr_first_DPB) );
@@ -252,7 +260,8 @@
         TRACE("GET CURRENT PSP ADDRESS\n");
         /* FIXME: should we return the original DOS PSP upon */
         /*        Windows startup ? */
-        SET_BX( context, DOSVM_psp );
+        if(DOSVM_IsWin16()) DOS3Call(context);
+        else SET_BX( context, DOSVM_psp );
         break;
 
     default:


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