[aandrejevic] 60464: [SOFT386] Fix prefix handling.

Author: aandrejevic
Date: Mon Sep 30 00:27:56 2013
New Revision: 60464

URL: http://svn.reactos.org/svn/reactos?rev=60464&view=rev
Log:
[SOFT386]
Fix prefix handling.


Modified:
    branches/ntvdm/lib/soft386/opcodes.c

Modified: branches/ntvdm/lib/soft386/opcodes.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/soft386/opcodes.c?rev…
==============================================================================
--- branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] (original)
+++ branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] Mon Sep 30 00:27:56 2013
@@ -3757,16 +3757,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x68);
 
-    if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+    if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
+    {
+        /* Invalid prefix */
+        Soft386Exception(State, SOFT386_EXCEPTION_UD);
+        return FALSE;
+    }
+
+    if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
     {
         /* The OPSIZE prefix toggles the size */
         Size = !Size;
-    }
-    else
-    {
-        /* Invalid prefix */
-        Soft386Exception(State, SOFT386_EXCEPTION_UD);
-        return FALSE;
     }
 
     if (Size)