`push`'s operand should sign-extend immediate and segment-register operands about flexdis86 HOT 2 CLOSED

diff --git a/data/optable.xml b/data/optable.xml
index 7d02fba..c5facfc 100644
--- a/data/optable.xml
+++ b/data/optable.xml
@@ -6982,7 +6982,7 @@
         <def>
             <pfx>oso</pfx>
             <opc>68</opc>
-            <opr>Iz</opr>
+            <opr>sIz</opr>
             <mode>def64</mode>
         </def>
         <def>
@@ -6994,7 +6994,7 @@
         <def>
             <pfx>oso</pfx>
             <opc>6a</opc>
-            <opr>Ib</opr>
+            <opr>sIb</opr>
             <mode>def64</mode>
         </def>
     </instruction>
diff --git a/tests/Assemble.hs b/tests/Assemble.hs
index ace04f5..e5a2179 100644
--- a/tests/Assemble.hs
+++ b/tests/Assemble.hs
@@ -31,9 +31,9 @@ j20 = [D.JumpOffset D.JSize8 (D.FixedOffset (20 - 2))]
 testCases :: [(AsmFlavor, String, Maybe D.InstructionInstance)]
 testCases = [ (Att, "ret", mkI "ret" [])
             , (Att, "int $0x3", mkI "int3" [])
-            , (Att, "push $0x8", mkI "push" [D.ByteImm 8])
-            , (Att, "pushw $0xfff", fmap setOSO $ mkI "push" [D.WordImm 0xfff])
-            , (Att, "push $0x2000000", mkI "push" [D.DWordImm (D.Imm32Concrete 0x2000000)])
+            , (Att, "push $0x8", mkI "push" [D.ByteSignedImm 8])
+            , (Att, "pushw $0xfff", fmap setOSO $ mkI "push" [D.WordSignedImm 0xfff])
+            , (Att, "push $0x2000000", mkI "push" [D.DWordSignedImm 0x2000000])
               -- The subtraction here is gross, but required because
               -- the jump is relative to the IP, which is incremented
               -- past the jump by the time it executes.