1 files changed, 10 insertions, 0 deletions
diff --git a/rtl/core/psr.sv b/rtl/core/psr.sv
index a66751a..1450333 100644
--- a/rtl/core/psr.sv
+++ b/rtl/core/psr.sv
@@ -6,4 +6,14 @@ typedef struct packed
 	logic n, z, c, v;
 } psr_flags;
 
+typedef logic[4:0] psr_mode;
+
+`define MODE_USR 5'b10000
+`define MODE_FIQ 5'b10001
+`define MODE_IRQ 5'b10010
+`define MODE_SVC 5'b10011
+`define MODE_ABT 5'b10111
+`define MODE_UND 5'b11011
+`define MODE_SYS 5'b11111
+
 `endif