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rocket-chip/uncore/src/main/scala/Util.scala
2016-07-31 17:13:52 -07:00

26 lines
661 B
Scala

package uncore
import Chisel._
package object Util {
implicit class UIntIsOneOf(val x: UInt) extends AnyVal {
def isOneOf(s: Seq[UInt]): Bool = s.map(x === _).reduce(_||_)
def isOneOf(u1: UInt, u2: UInt*): Bool = isOneOf(u1 +: u2.toSeq)
}
implicit class SeqToAugmentedSeq[T <: Data](val x: Seq[T]) extends AnyVal {
def apply(idx: UInt): T = {
if (x.size == 1) {
x.head
} else {
val half = 1 << (log2Ceil(x.size) - 1)
val newIdx = idx & UInt(half - 1)
Mux(idx >= UInt(half), x.drop(half)(newIdx), x.take(half)(newIdx))
}
}
def asUInt(): UInt = Cat(x.map(_.asUInt).reverse)
}
}