package xiangshan.backend.decode.isa.predecode

import chisel3.util._
import xiangshan.frontend.BrType

object PreDecodeInst {
  // def C_JAL     = BitPat("b????????????????_?01_?_??_???_??_???_01") // RV32C
  def C_J       = BitPat("b????????????????_101_?_??_???_??_???_01")
  def C_JALR    = BitPat("b????????????????_100_?_??_???_00_000_10")  //c.jalr & c.jr
  def C_BRANCH  = BitPat("b????????????????_11?_?_??_???_??_???_01")
  def JAL       = BitPat("b????????????????_???_?????_1101111")
  def JALR      = BitPat("b????????????????_000_?????_1100111")
  def BRANCH    = BitPat("b????????????????_???_?????_1100011")


  val brTable = Array(
    // C_JAL     -> List(BrType.jal),
    C_J       -> List(BrType.jal),
    C_JALR    -> List(BrType.jalr),
    C_BRANCH  -> List(BrType.branch),
    JAL       -> List(BrType.jal),
    JALR      -> List(BrType.jalr),
    BRANCH    -> List(BrType.branch)
  )
}