fix(vstart): fix vstart wrong update when other instruction handling …

…interrupt (#3887)
OpenXiangShan · Nov 18, 2024 · cc89a8a · cc89a8a
1 parent 45f3afd
commit cc89a8a
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/main/scala/xiangshan/backend/rob/Rob.scala b/src/main/scala/xiangshan/backend/rob/Rob.scala
@@ -688,8 +688,8 @@ class RobImp(override val wrapper: Rob)(implicit p: Parameters, params: BackendP
     vecExcpInfo.bits.vstart := exceptionDataRead.bits.vstart
   }
 
-  io.csr.vstart.valid := RegNext(Mux(exceptionHappen, exceptionDataRead.bits.vstartEn, resetVstart))
-  io.csr.vstart.bits := RegNext(Mux(exceptionHappen, exceptionDataRead.bits.vstart, 0.U))
+  io.csr.vstart.valid := RegNext(Mux(exceptionHappen && deqHasException, exceptionDataRead.bits.vstartEn, resetVstart))
+  io.csr.vstart.bits := RegNext(Mux(exceptionHappen && deqHasException, exceptionDataRead.bits.vstart, 0.U))
 
   val vxsat = Wire(Valid(Bool()))
   vxsat.valid := io.commits.isCommit && vxsat.bits