Function dr_insert_write_raw_tls 

pub unsafe extern "C" fn dr_insert_write_raw_tls(
    drcontext: *mut c_void,
    ilist: *mut instrlist_t,
    where_: *mut instr_t,
    tls_register: reg_id_t,
    tls_offs: uint,
    reg: reg_id_t,
)

Inserts into ilist prior to “where” instruction(s) to store the value in the general-purpose full-size register \p reg into the raw TLS slot with offset \p tls_offs from the TLS base \p tls_register.