Function tracing_write 

pub fn tracing_write<const N: usize>(
    memory: &mut TracingMemory,
    address_space: u32,
    ptr: u32,
    data: [u8; N],
    prev_timestamp: &mut u32,
    prev_data: &mut [u8; N],
)

Writes reg_ptr, reg_val into memory and records the memory access in mutable buffer. Trace generation relevant to this memory access can be done fully from the recorded buffer.