Initial Commit

1 files changed, 34 insertions, 0 deletions

diff --git a/VexRiscv/src/test/scala/vexriscv/experimental/Experiments.scala b/VexRiscv/src/test/scala/vexriscv/experimental/Experiments.scala
new file mode 100644
index 0000000..1fead21
--- /dev/null
+++ b/VexRiscv/src/test/scala/vexriscv/experimental/Experiments.scala
@@ -0,0 +1,34 @@
+package vexriscv.experimental
+
+import spinal.core._
+
+class Stageable[T <: Data](val dataType : T) extends HardType[T](dataType) with Nameable{
+  setWeakName(this.getClass.getSimpleName.replace("$",""))
+}
+
+trait Stage{
+  def read[T <: Data](stageable : Stageable[T]) : T
+  def write[T <: Data](stageable : Stageable[T], value : T, cond : Bool = null) : Unit
+
+  def haltBySelf   : Bool   //user settable, stuck the instruction, should only be set by the instruction itself
+  def haltByOthers : Bool   //When settable, stuck the instruction, should only be set by something else than the stucked instruction
+  def removeIt     : Bool   //When settable, unschedule the instruction as if it was never executed (no side effect)
+  def flushAll     : Bool   //When settable, unschedule instructions in the current stage and all prior ones
+
+  def isValid        : Bool //Inform if a instruction is in the current stage
+  def isStuck        : Bool //Inform if the instruction is stuck (haltItself || haltByOther)
+  def isStuckByOthers: Bool //Inform if the instruction is stuck by sombody else
+  def isRemoved      : Bool //Inform if the instruction is going to be unschedule the current cycle
+  def isFlushed      : Bool //Inform if the instruction is flushed (flushAll set in the current or subsequents stages)
+  def isFiring       : Bool //Inform if the current instruction will go to the next stage the next cycle (isValid && !isStuck && !removeIt)
+}
+
+abstract class UnusedStage extends Stage
+abstract class AsyncStage extends Stage
+abstract class CycleStage extends Stage
+abstract class SyncStage extends Stage
+abstract class CutStage extends Stage
+
+abstract class PipelineStd{
+  val prefetch, fetch, decode, execute, memory, writeback = 0
+}
\ No newline at end of file