From 8024af6b1348b5f47fabe5a1949de54607a33888 Mon Sep 17 00:00:00 2001
From: taitep <taitep@taitep.se>
Date: Sat, 27 Dec 2025 21:47:22 +0100
Subject: Implement ECALL and EBREAK, the final RV64I instructions!

---
 src/decode.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/decode.rs')

diff --git a/src/decode.rs b/src/decode.rs
index d520151..e24bac0 100644
--- a/src/decode.rs
+++ b/src/decode.rs
@@ -93,4 +93,9 @@ impl Instruction {
     pub fn funct6(self) -> u8 {
         (self.0 >> 26 & 0x3f) as u8
     }
+
+    /// Mostly/only used for the SYSTEM opcode
+    pub fn funct12(self) -> u16 {
+        (self.0 >> 20) as u16
+    }
 }
-- 
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