Function parse_two_fields

crates/asm-to-binary/src/assembler/parser.rs:442–445

Split `"rd, rest"` into `(rd_str, rest_str)`.

(operands: &str)

    use crate::riscv::rv64i::Lw;
    match mnemonic {
        "lb" => AsmToken::Real(RealInstruction::Lb(Lb::new(rd, rs1, imm))),
        "lbu" => AsmToken::Real(RealInstruction::Lbu(Lbu::new(rd, rs1, imm))),
        "lw" => AsmToken::Real(RealInstruction::Lw(Lw::new(rd, rs1, imm))),
        "ld" => AsmToken::Real(RealInstruction::Ld(Ld::new(rd, rs1, imm))),
        _ => unreachable!(),
    }
}