Implement RL r instruction

Some groundwork on rotation operations
2022-02-08 16:14:57 +00:00
parent da29d148bf
commit 4f892eb3f2
6 changed files with 69 additions and 20 deletions
--- a/rtl/cpu/cpu_pkg.svh
+++ b/rtl/cpu/cpu_pkg.svh
@@ -55,6 +55,17 @@ package cpu_pkg;
        ALU_OP_INCR = 5'h11 // Increment register instead of a
    } alu_op_t;

+    typedef enum logic [2:0] {
+        ROT_OP_RLC = 3'h00,
+        ROT_OP_RRC = 3'h01,
+        ROT_OP_RL  = 3'h02,
+        ROT_OP_RR  = 3'h03,
+        ROT_OP_SLA = 3'h04,
+        ROT_OP_SRA = 3'h05,
+        ROT_OP_SLL = 3'h06,
+        ROT_OP_SRL = 3'h07
+    } rot_op_t;
+
    typedef enum logic [1:0] {
        ALU16_OP_ADD = 2'h00,
        ALU16_INC    = 2'h01,