diff --git a/t1/src/LaneZvbb.scala b/t1/src/LaneZvbb.scala
index a122848aec..d412210844 100644
--- a/t1/src/LaneZvbb.scala
+++ b/t1/src/LaneZvbb.scala
@@ -28,6 +28,7 @@ class LaneZvbbRequest(datapathWidth: Int) extends VFUPipeBundle {
 
 class LaneZvbbResponse(datapathWidth: Int)  extends VFUPipeBundle {
   val data = UInt(datapathWidth.W)
+  val source2 = UInt(datapathWidth.W)
 }
 
 @instantiable
@@ -47,6 +48,11 @@ class LaneZvbb(val parameter: LaneZvbbParam)
   val zvbbCTZ = (PopCount(scanRightOr(zvbbBRev)) - 1.U).asUInt
   val zvbbROL = zvbbSrc.rotateLeft(zvbbRs(4, 0)).asUInt
   val zvbbROR = zvbbSrc.rotateRight(zvbbRs(4, 0)).asUInt
+
+  val zvbbSLL64 = (0.U((parameter.datapathWidth-1).W) ## zvbbSrc.zext).asUInt << zvbbRs(5, 0) 
+  val zvbbSLL = zvbbSLL64(parameter.datapathWidth-1, 0)
+  val zvbbSLLMSB = zvbbSLL64(2*parameter.datapathWidth-1, parameter.datapathWidth)
+  
   response.data := Mux1H(UIntToOH(request.opcode), Seq(
       zvbbBRev,
       zvbbBRev8,
@@ -55,7 +61,9 @@ class LaneZvbb(val parameter: LaneZvbbParam)
       zvbbCTZ,
       zvbbROL,
       zvbbROR,
+      zvbbSLL,
     )
   )
+  response.source2 = Mux(request.opcode == 7.U, zvbbSLLMSB, 0.U)
 }
 
diff --git a/t1/src/decoder/Decoder.scala b/t1/src/decoder/Decoder.scala
index a9760eca49..861478d411 100644
--- a/t1/src/decoder/Decoder.scala
+++ b/t1/src/decoder/Decoder.scala
@@ -341,6 +341,7 @@ object Decoder {
           case _: zvbbUop4.type => BitPat("b0100")
           case _: zvbbUop5.type => BitPat("b0101")
           case _: zvbbUop6.type => BitPat("b0110")
+          case _: zvbbUop7.type => BitPat("b0111")
           case _ => BitPat.dontCare(4)
         }
       case _ => BitPat.dontCare(4)
diff --git a/t1/src/decoder/attribute/isCrossread.scala b/t1/src/decoder/attribute/isCrossread.scala
index 5787aa1361..34c11bed3d 100644
--- a/t1/src/decoder/attribute/isCrossread.scala
+++ b/t1/src/decoder/attribute/isCrossread.scala
@@ -56,10 +56,6 @@ object isCrossread {
       "vwsub.wx",
       "vwsubu.wv",
       "vwsubu.wx",
-      // rv_zvbb
-      "vwsll.vv",
-      "vwsll.vx",
-      "vwsll.vi",
     )
     allMatched.contains(t1DecodePattern.instruction.name)
   }
diff --git a/t1/src/decoder/attribute/zvbbUop.scala b/t1/src/decoder/attribute/zvbbUop.scala
index c95cd2ea6a..4fdfbba09d 100644
--- a/t1/src/decoder/attribute/zvbbUop.scala
+++ b/t1/src/decoder/attribute/zvbbUop.scala
@@ -13,6 +13,7 @@ object zvbbUop3 extends ZvbbUOPType
 object zvbbUop4 extends ZvbbUOPType
 object zvbbUop5 extends ZvbbUOPType
 object zvbbUop6 extends ZvbbUOPType
+object zvbbUop7 extends ZvbbUOPType
 
 object ZvbbUOP {
   def apply(t1DecodePattern: T1DecodePattern): Uop = {
@@ -24,6 +25,7 @@ object ZvbbUOP {
       t4 _ -> zvbbUop4,
       t5 _ -> zvbbUop5,
       t6 _ -> zvbbUop6,
+      t7 _ -> zvbbUop7,
     ).collectFirst {
       case (fn, tpe) if fn(t1DecodePattern) => tpe
     }.getOrElse(UopDC)