import chisel3._
import chisel3.util._

class LoadQueue(p: CoreParams = CoreParams()) extends Module {
  val io = IO(new Bundle {
    val enqValid = Input(Bool())
    val enqAddr = Input(UInt(p.xlen.W))
    val enqReady = Output(Bool())
    val complete = Input(Bool())
    val flush = Input(Bool())
  })

  val count = RegInit(0.U(log2Ceil(p.loadQueueEntries + 1).W))
  io.enqReady := count =/= p.loadQueueEntries.U

  when(io.flush) {
    count := 0.U
  }.otherwise {
    when(io.enqValid && io.enqReady) { count := count + 1.U }
    when(io.complete && count =/= 0.U) { count := count - 1.U }
  }
}