Function store_int

crates/virtual-machine/src/cpu/pipeline/memory.rs:289–305

(bus: &mut SystemBus, addr: u64, val: u64, funct3: u8)

            let word = bus
                .read_word(addr)
                .map_err(|_| VmError::LoadAccessFault(addr))?;
            Ok(0xFFFF_FFFF_0000_0000u64 | (word as u64))
        }
        3 => {
            // FLD
            let dw = bus
                .read_doubleword(addr)
                .map_err(|_| VmError::LoadAccessFault(addr))?;
            Ok(dw)
        }
        _ => Err(VmError::LoadAccessFault(addr)),
    }
}

// --- FP store ---

fn store_fp(bus: &mut SystemBus, addr: u64, bits: u64, funct3: u8) -> Result<(), VmError> {
    match funct3 {
        2 => {
            // FSW: lower 32 bits