Implements (mostly untested) rv64i)

src/main/scala/projet/op/OpLoad.scala

@@ -15,11 +15,18 @@ object OpLoad {
 
         // Meaning of Funct3 in the context of an OpLoad instruction
         object Funct3 extends ChiselEnum {
+            // Zero extend
             val LB = "b000".U
             val LH = "b001".U
             val LW = "b010".U
+
+            // Sign extend
             val LBU = "b100".U
             val LHU = "b101".U
+            val LWU = "b110".U
+
+            // Arch width
+            val LD = "b011".U
         }
 
         io.optype := OpType.I
@@ -55,6 +62,16 @@ object OpLoad {
             is(Funct3.LW) {
                 io.memory_size := DMemSize.Word
             }
+            is(Funct3.LWU) {
+                io.memory_size := DMemSize.Word
+                io.memory_sign_extend := true.B;
+            }
+
+            // Long load
+            is(Funct3.LD) {
+                io.memory_size := DMemSize.Long
+                io.memory_sign_extend := true.B;
+            }
         }
     }