Rename dmem.sret signal to more accurate invalidate_lr

rocket/src/main/scala/ctrl.scala

@@ -674,7 +674,7 @@ class Control extends CoreModule
   io.dmem.req.bits.cmd  := ex_ctrl.mem_cmd
   io.dmem.req.bits.typ  := ex_ctrl.mem_type
   io.dmem.req.bits.phys := Bool(false)
-  io.dmem.sret := wb_xcpt // obviously not an sret, but sufficient
+  io.dmem.invalidate_lr := wb_xcpt
 
   io.rocc.cmd.valid := wb_rocc_val
   io.rocc.exception := wb_xcpt && io.dpath.status.xs.orR

rocket/src/main/scala/nbdcache.scala

@@ -83,7 +83,7 @@ class HellaCacheIO extends CoreBundle {
   val resp = Valid(new HellaCacheResp).flip
   val replay_next = Valid(Bits(width = coreDCacheReqTagBits)).flip
   val xcpt = (new HellaCacheExceptions).asInput
-  val sret = Bool(OUTPUT)
+  val invalidate_lr = Bool(OUTPUT)
   val ordered = Bool(INPUT)
 }
 
@@ -752,7 +752,7 @@ class HellaCache extends L1HellaCacheModule {
       lrsc_count := 0
     }
   }
-  when (io.cpu.sret) { lrsc_count := 0 }
+  when (io.cpu.invalidate_lr) { lrsc_count := 0 }
 
   val s2_data = Vec.fill(nWays){Bits(width = encRowBits)}
   for (w <- 0 until nWays) {

rocket/src/main/scala/rocc.scala

@@ -123,7 +123,7 @@ class AccumulatorExample extends RoCC
   io.mem.req.bits.cmd := M_XRD // perform a load (M_XWR for stores)
   io.mem.req.bits.typ := MT_D // D = 8 bytes, W = 4, H = 2, B = 1
   io.mem.req.bits.data := Bits(0) // we're not performing any stores...
-  io.mem.sret := false
+  io.mem.invalidate_lr := false
 
   io.imem.acquire.valid := false
   io.imem.grant.ready := false

rocket/src/main/scala/tile.scala

@@ -25,7 +25,7 @@ class RocketTile(resetSignal: Bool = null) extends Tile(resetSignal) {
   val ptw = Module(new PTW(params(NPTWPorts)))
   val core = Module(new Core, { case CoreName => "Rocket" })
 
-  dcache.io.cpu.sret := core.io.dmem.sret // Bypass sret to dcache
+  dcache.io.cpu.invalidate_lr := core.io.dmem.invalidate_lr // Bypass signal to dcache
   val dcArb = Module(new HellaCacheArbiter(params(NDCachePorts)))
   dcArb.io.requestor(0) <> ptw.io.mem
   dcArb.io.requestor(1) <> core.io.dmem