[FAST486]

[reactos.git] / reactos / lib / fast486 / opcodes.c

diff --git a/reactos/lib/fast486/opcodes.c b/reactos/lib/fast486/opcodes.c
index 8f5e0c6..113c880 100644 (file)
--- a/reactos/lib/fast486/opcodes.c
+++ b/reactos/lib/fast486/opcodes.c
@@ -4739,8 +4739,16 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeIret)
         State->Cpl = GET_SEGMENT_RPL(CodeSel);
 
         /* Set the new flags */
-        if (Size) State->Flags.Long = NewFlags.Long & PROT_MODE_FLAGS_MASK;
-        else State->Flags.LowWord = NewFlags.LowWord & PROT_MODE_FLAGS_MASK;
+        if (Size)
+        {
+            State->Flags.Long = (State->Flags.Long & ~PROT_MODE_FLAGS_MASK)
+                                | (NewFlags.Long & PROT_MODE_FLAGS_MASK);
+        }
+        else
+        {
+            State->Flags.LowWord = (State->Flags.LowWord & ~PROT_MODE_FLAGS_MASK)
+                                   | (NewFlags.LowWord & PROT_MODE_FLAGS_MASK);
+        }
         State->Flags.AlwaysSet = TRUE;
 
         /* Set additional flags */