Update skeleton

src/asm/mod.rs

@@ -523,6 +523,8 @@ pub enum UType {
 /// https://riscv.org/specifications/isa-spec-pdf/ (139p)
 #[derive(Debug, Clone, PartialEq)]
 pub enum Pseudo {
+    /// la rd, symbol
+    La { rd: Register, symbol: Label },
     /// li rd, immediate
     Li {
         rd: Register,

src/asm/write_asm.rs

@@ -384,6 +384,7 @@ impl WriteString for UType {
 impl WriteString for Pseudo {
     fn write_string(&self) -> String {
         match self {
+            Self::La { rd, symbol } => format!("la\t{},{}", rd.write_string(), symbol.0),
             Self::Li { rd, imm } => format!("li\t{},{}", rd.write_string(), *imm as i64),
             Self::Mv { rd, rs } => format!("mv\t{},{}", rd.write_string(), rs.write_string()),
             Self::Fmv { data_size, rd, rs } => format!(