chore(Decode): add priviledged inst set

src/main/scala/noop/Decode.scala

@@ -55,6 +55,7 @@ object Instructions extends HasInstrType with HasNOOPParameter {
   def DecodeTable = RVIInstr.table ++ NOOPTrap.table ++
     (if (HasMExtension) RVMInstr.table else Nil) ++
     (if (HasCExtension) RVCInstr.table else Nil) ++
+    Priviledged.table ++
     RVZicsrInstr.table ++ RVZifenceiInstr.table
 }
 

src/main/scala/noop/IDU.scala

@@ -297,7 +297,7 @@ class IDU extends NOOPModule with HasInstrType {
 
   io.out.bits.cf.exceptionVec.map(_ := false.B)
   io.out.bits.cf.exceptionVec(illegalInstr) := (instrType === InstrN && !hasIntr) && io.in.valid
-  io.out.bits.cf.exceptionVec(ecallM) := (instr === RVZicsrInstr.ECALL) && io.in.valid
+  io.out.bits.cf.exceptionVec(ecallM) := (instr === Priviledged.ECALL) && io.in.valid
 
   io.out.bits.ctrl.isNoopTrap := (instr === NOOPTrap.TRAP) && io.in.valid
 }

src/main/scala/noop/isa/Priviledged.scala

+package noop
+
+import chisel3._
+import chisel3.util._
+
+object Priviledged extends HasInstrType {
+  def ECALL   = BitPat("b000000000000_00000_000_00000_1110011")
+  def MRET    = BitPat("b001100000010_00000_000_00000_1110011")
+  def SRET    = BitPat("b000100000010_00000_000_00000_1110011")
+
+  val table = Array(
+    ECALL          -> List(InstrI, FuType.csr, CSROpType.jmp),
+    MRET           -> List(InstrI, FuType.csr, CSROpType.jmp),
+    SRET           -> List(InstrI, FuType.csr, CSROpType.jmp)
+  )
+}

src/main/scala/noop/isa/RVZicsr.scala

@@ -10,9 +10,6 @@ object RVZicsrInstr extends HasInstrType {
   def CSRRWI  = BitPat("b????????????_?????_101_?????_1110011")
   def CSRRSI  = BitPat("b????????????_?????_110_?????_1110011")
   def CSRRCI  = BitPat("b????????????_?????_111_?????_1110011")
-  def ECALL   = BitPat("b000000000000_00000_000_00000_1110011")
-  def MRET    = BitPat("b001100000010_00000_000_00000_1110011")
-  def SRET    = BitPat("b000100000010_00000_000_00000_1110011")
 
   val table = Array(
     CSRRW          -> List(InstrI, FuType.csr, CSROpType.wrt),
@@ -20,9 +17,6 @@ object RVZicsrInstr extends HasInstrType {
     CSRRC          -> List(InstrI, FuType.csr, CSROpType.clr),
     CSRRWI         -> List(InstrI, FuType.csr, CSROpType.wrti),
     CSRRSI         -> List(InstrI, FuType.csr, CSROpType.seti),
-    CSRRCI         -> List(InstrI, FuType.csr, CSROpType.clri),
-    ECALL          -> List(InstrI, FuType.csr, CSROpType.jmp),
-    MRET           -> List(InstrI, FuType.csr, CSROpType.jmp),
-    SRET           -> List(InstrI, FuType.csr, CSROpType.jmp)
+    CSRRCI         -> List(InstrI, FuType.csr, CSROpType.clri)
   )
 }