add switch case statements for functions of script eval

src/main/scala/hwdbg/communication/interpreter/script_buffer_handler.scala

@@ -0,0 +1 @@
+

src/main/scala/hwdbg/configs/configs.scala

@@ -51,11 +51,6 @@ object DebuggerConfigurations {
   //
   val NUMBER_OF_PINS: Int = 32
 
-  //
-  // Maximum number of stages
-  //
-  val MAXIMUM_NUMBER_OF_STAGES: Int = 10
-
   //
   // Address width of the Block RAM (BRAM)
   //
@@ -68,6 +63,24 @@ object DebuggerConfigurations {
 
 }
 
+/**
+ * @brief
+ *   Design constants for script engine
+ */
+object ScriptEngineConfigurations {
+
+  //
+  // Maximum number of stages
+  //
+  val MAXIMUM_NUMBER_OF_STAGES: Int = 10
+
+  //
+  // Maximum number of stages
+  //
+  val MAXIMUM_NUMBER_OF_SUPPORTED_OPERATORS: Int = 2
+
+}
+
 /**
  * @brief
  *   The constants for memory communication

src/main/scala/hwdbg/globals/global_stages.scala

@@ -0,0 +1,38 @@
+/**
+ * @file
+ *   global_stages.scala
+ * @author
+ *   Sina Karvandi ([email protected])
+ * @brief
+ *   Data types related to stage registers
+ * @details
+ * @version 0.1
+ * @date
+ *   2024-05-17
+ *
+ * @copyright
+ *   This project is released under the GNU Public License v3.
+ */
+package hwdbg.stage
+
+import chisel3._
+
+import hwdbg.configs._
+
+object GlobalStages {
+
+  //
+  // Stage registers
+  //
+  val stageRegs = Reg(
+    Vec(
+      ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+      new StageRegisters(
+        DebuggerConfigurations.ENABLE_DEBUG,
+        DebuggerConfigurations.NUMBER_OF_PINS,
+        ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES
+      )
+    )
+  )
+
+}

src/main/scala/hwdbg/main.scala

@@ -29,7 +29,7 @@ import hwdbg.communication.interpreter._
 class DebuggerMain(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
     bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
     bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
     portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
@@ -191,7 +191,7 @@ object DebuggerMain {
   def apply(
       debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
       numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-      maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+      maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
       bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
       bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
       portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP

src/main/scala/hwdbg/script/eval.scala

@@ -19,15 +19,28 @@ import chisel3._
 import chisel3.util._
 
 import hwdbg.configs._
+import hwdbg.utils._
 import hwdbg.stage._
 
+object ScriptEvalFunc {
+  object ScriptOperators extends ChiselEnum {
+    val sFuncInc, sFuncDec, sFuncDec2, sFuncDec3, sFuncDec4, sFuncDec5, sFuncDec6, sFuncDec7 = Value
+  }
+}
+
 class ScriptEngineEval(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
     portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
 ) extends Module {
 
+  //
+  // Import state enum
+  //
+  import ScriptEvalFunc.ScriptOperators
+  import ScriptEvalFunc.ScriptOperators._
+
   val io = IO(new Bundle {
 
     //
@@ -36,9 +49,9 @@ class ScriptEngineEval(
     val en = Input(Bool()) // chip enable signal
 
     //
-    // Evaluation symbol
+    // Evaluation operator symbol
     //
-    val symbol = Input(new SYMBOL)
+    val operator = Input(new SYMBOL)
 
     val currentStage = Input(UInt(log2Ceil(maximumNumberOfStages).W))
     val nextStage = Output(UInt(log2Ceil(maximumNumberOfStages).W))
@@ -54,12 +67,40 @@ class ScriptEngineEval(
   // Output pins
   //
   // val outputPin = Wire(Vec(numberOfPins, UInt(1.W)))
-  val nextStage = Wire(UInt(log2Ceil(maximumNumberOfStages).W))
+  val nextStage = WireInit(0.U(log2Ceil(maximumNumberOfStages).W))
+
+  //
+  // Assign operator value (split the signal into only usable part)
+  //
+  LogInfo(debug)("Usable size of Value in the SYMBOL: " + ScriptOperators().getWidth)
+  val operatorValue = io.operator.Value(ScriptOperators().getWidth - 1, 0).asTypeOf(ScriptOperators())
+
+  //
+  // *** Implementing the evaluation engine ***
+  //
+
+  //
+  // Apply the chip enable signal
+  //
+  when(io.en === true.B) {
+
+    switch(operatorValue) {
+
+      is(sFuncInc) {
+        nextStage := io.currentStage + 1.U
+      }
+      is(sFuncDec) {
+        nextStage := io.currentStage + 2.U
+      }
+    }
+  }
+
+  // ---------------------------------------------------------------------
 
   //
   // Increment the stage
   //
-  nextStage := io.currentStage + 1.U
+  // nextStage := io.currentStage + 1.U
 
   //
   // Connect the output signals
@@ -75,11 +116,11 @@ object ScriptEngineEval {
   def apply(
       debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
       numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-      maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+      maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
       portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
   )(
       en: Bool,
-      symbol: SYMBOL,
+      operator: SYMBOL,
       currentStage: UInt,
       inputPin: Vec[UInt]
   ): (UInt, Vec[UInt]) = {
@@ -100,7 +141,7 @@ object ScriptEngineEval {
     // Configure the input signals
     //
     scriptEngineEvalModule.io.en := en
-    scriptEngineEvalModule.io.symbol := symbol
+    scriptEngineEvalModule.io.operator := operator
     scriptEngineEvalModule.io.currentStage := currentStage
     scriptEngineEvalModule.io.inputPin := inputPin
 

src/main/scala/hwdbg/script/exec.scala

@@ -24,7 +24,7 @@ import hwdbg.stage._
 class ScriptExecutionEngine(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
     bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
     bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
     portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
@@ -151,7 +151,7 @@ object ScriptExecutionEngine {
   def apply(
       debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
       numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-      maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+      maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
       bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
       bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
       portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP

src/main/scala/hwdbg/types/stage.scala

@@ -46,7 +46,7 @@ class SYMBOL extends Bundle {
 class StageRegisters(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES
 ) extends Bundle {
   val pinValues = Vec(numberOfPins, UInt(1.W)) // The value of each pin in each stage (should be passed to the next stage)
   val scriptSymbol = new SYMBOL // Interpreted script symbol for the target stage (should NOT be passed to the next stage)

src/main/scala/top.scala

@@ -24,7 +24,7 @@ import hwdbg.configs._
 class DebuggerModule(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
     bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
     bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
     portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
@@ -94,7 +94,7 @@ object Main extends App {
       new DebuggerModule(
         DebuggerConfigurations.ENABLE_DEBUG,
         DebuggerConfigurations.NUMBER_OF_PINS,
-        DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+        ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
         DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
         DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
         DebuggerPorts.PORT_PINS_MAP

src/main/scala/top_test.scala

@@ -25,7 +25,7 @@ import hwdbg.libs.mem._
 class DebuggerModuleTestingBRAM(
     debug: Boolean = DebuggerConfigurations.ENABLE_DEBUG,
     numberOfPins: Int = DebuggerConfigurations.NUMBER_OF_PINS,
-    maximumNumberOfStages: Int = DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+    maximumNumberOfStages: Int = ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
     bramAddrWidth: Int = DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
     bramDataWidth: Int = DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
     portsConfiguration: Map[Int, Int] = DebuggerPorts.PORT_PINS_MAP
@@ -126,7 +126,7 @@ object MainWithInitializedBRAM extends App {
       new DebuggerModuleTestingBRAM(
         DebuggerConfigurations.ENABLE_DEBUG,
         DebuggerConfigurations.NUMBER_OF_PINS,
-        DebuggerConfigurations.MAXIMUM_NUMBER_OF_STAGES,
+        ScriptEngineConfigurations.MAXIMUM_NUMBER_OF_STAGES,
         DebuggerConfigurations.BLOCK_RAM_ADDR_WIDTH,
         DebuggerConfigurations.BLOCK_RAM_DATA_WIDTH,
         DebuggerPorts.PORT_PINS_MAP