[aandrejevic] 60260: [SOFT386] Fix prefix handling.

Author: aandrejevic
Date: Sat Sep 21 02:18:41 2013
New Revision: 60260

URL: http://svn.reactos.org/svn/reactos?rev=60260&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] Sat Sep 21 02:18:41 2013
@@ -1425,16 +1425,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x05);
 
-    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)
@@ -1695,16 +1696,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x0D);
 
-    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)
@@ -1925,9 +1927,9 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x24);
 
-    if (State->PrefixFlags)
-    {
-        /* This opcode doesn't take any prefixes */
+    if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
+    {
+        /* Invalid prefix */
         Soft386Exception(State, SOFT386_EXCEPTION_UD);
         return FALSE;
     }
@@ -1961,16 +1963,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x25);
 
-    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)
@@ -2227,16 +2230,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x35);
 
-    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)
@@ -2478,16 +2482,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0xA9);
 
-    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)
@@ -2965,16 +2970,17 @@
     /* Make sure this is the right instruction */
     ASSERT(Opcode == 0x15);
 
-    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)
@@ -3418,16 +3424,17 @@
     /* Make sure this is the right instruction */
     ASSERT((Opcode & 0xEF) == 0x2D);
 
-    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)