tilelink2: fix a bug in UIntToOH1 triggered if the size was too big

2016-09-04 21:54:23 -07:00
parent 9f45212c95
commit cf0291061d
3 changed files with 4 additions and 5 deletions
--- a/src/main/scala/uncore/tilelink2/Edges.scala
+++ b/src/main/scala/uncore/tilelink2/Edges.scala
@ -12,8 +12,7 @@ class TLEdge(
 {
  def isAligned(address: UInt, lgSize: UInt) =
    if (maxLgSize == 0) Bool(true) else {
-      val ones = UInt((1 << maxLgSize) - 1)
-      val mask = (ones << lgSize)(maxLgSize*2-1, maxLgSize)
+      val mask = ~(SInt(-1, width=maxLgSize).asUInt << lgSize)(maxLgSize-1, 0)
      (address & mask) === UInt(0)
    }