Implement LUI, AUIPC

2 files changed, 6 insertions, 0 deletions

diff --git a/src/isa/mod.rs b/src/isa/mod.rs
index 9da1751..8a6e65b 100644
--- a/src/isa/mod.rs
+++ b/src/isa/mod.rs
@@ -176,4 +176,8 @@ impl Instruction {
         let low12 = ((self.word as SignedWord) >> 31) as Word;
         ((low12 << 12) | (low11 << 11) | (low5 << 5) | (low1 << 1)) as SignedWord
     }
+
+    pub fn u_imm(&self) -> SignedWord {
+        (self.word & 0xFFFFF000) as SignedWord
+    }
 }
diff --git a/src/isa/opcodes.rs b/src/isa/opcodes.rs
index 39401cd..8ca715e 100644
--- a/src/isa/opcodes.rs
+++ b/src/isa/opcodes.rs
@@ -14,6 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with rustv.  If not, see <http://www.gnu.org/licenses/>.
 
+pub const LUI: u32 = 0x37;
+pub const AUIPC: u32 = 0x17;
 pub const BRANCH: u32 = 0x63;
 pub const JALR: u32 = 0x67;
 pub const JAL: u32 = 0x6F;