Add jal instruction

2025-11-07 11:51:33 +01:00
parent c2c16d9672
commit cbf7ec9ad3
6 changed files with 90 additions and 41 deletions
--- a/src/main/scala/projet/ImmediateDecoder.scala
+++ b/src/main/scala/projet/ImmediateDecoder.scala
@@ -20,6 +20,14 @@ class ImmediateDecoder extends Module {
    val imm_u = Cat(io.instruction(31, 12), 0.U(12.W));
    val imm_i = Cat(Fill(20, io.instruction(31)), io.instruction(31, 20));
    val imm_ir = io.instruction(24, 20);
+    val imm_j = Cat(
+        Fill(11, io.instruction(31)),
+        io.instruction(31),
+        io.instruction(19, 12),
+        io.instruction(20),
+        io.instruction(30, 21),
+        0.U
+    );

    switch(io.op_type) {
        is(OpType.U) {
@@ -31,5 +39,8 @@ class ImmediateDecoder extends Module {
        is(OpType.IR) {
            io.immediate := imm_ir
        }
+        is(OpType.J) {
+            io.immediate := imm_j
+        }
    }
 }