fixed int cast error in lui

ralphjzhang · May 24, 2023 · 52270dc · 52270dc
1 parent 89213aa
commit 52270dc
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/cpu.zig b/src/cpu.zig
@@ -358,8 +358,8 @@ pub const Cpu = struct {
                 } else return Exception.illegal_instruction;
             },
             0x37 => { // lui
-                const imm = @intCast(i64, @truncate(u32, inst & 0xffff_f000));
-                self.regs[rd] = @bitCast(u64, imm);
+                const imm = @bitCast(i32, inst & 0xffff_f000);
+                self.regs[rd] = @bitCast(u64, @intCast(i64, imm));
             },
             0x3b => {
                 const rs1_u = self.regs[rs1];