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Add semantics for movmskps #528

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22 changes: 21 additions & 1 deletion x86/src/Data/Macaw/X86/Semantics.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,9 @@ This module provides definitions for x86 instructions.
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE NondecreasingIndentation #-}
{-# OPTIONS_GHC -Wno-unrecognised-pragmas #-}

{-# HLINT ignore "Use camelCase" #-}
module Data.Macaw.X86.Semantics
( execInstruction
) where
Expand Down Expand Up @@ -2580,11 +2583,28 @@ def_pminu suf w = def_pselect ("pminu" <> suf) bvUlt w
def_pmins :: (1 <= w) => MnemSuffix -> NatRepr w -> InstructionDef
def_pmins suf w = def_pselect ("pmins" <> suf) bvSlt w


exec_movmskps ::
forall st ids n n'.
(SupportedBVWidth n) =>
Location (Addr ids) (BVType n) ->
BVExpr ids n' ->
X86Generator st ids ()
exec_movmskps l v
| Just Refl <- testEquality (typeWidth v) n128
, Just LeqProof <- testLeq n32 (typeWidth l) = do
l .= uext (typeWidth l) (mkMask n32 v)
| otherwise = fail "Unsupported bitwidth size for movmskps"
where
mkMask sz src = bvUnvectorize sz $ map f $ bvVectorize n32 src
f b = mux (msb b) (bvLit n1 1) (bvLit n1 0)

exec_pmovmskb :: forall st ids n n'
. SupportedBVWidth n
=> Location (Addr ids) (BVType n)
-> BVExpr ids n'
-> X86Generator st ids ()

exec_pmovmskb l v
| Just Refl <- testEquality (typeWidth v) n64 = do
l .= uext (typeWidth l) (mkMask n8 v)
Expand Down Expand Up @@ -3235,7 +3255,7 @@ all_instructions =
, def_pmins "b" n8
, def_pmins "w" n16
, def_pmins "d" n32

, defBinaryLVpoly "movmskps" exec_movmskps
, defBinaryLVpoly "pmovmskb" exec_pmovmskb
, def_movhpd
, def_movlpd
Expand Down
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