DOKK / manpages / debian 10 / systemtap-doc / function::returnval.3stap.en
FUNCTION::RETURNVAL(3stap) Errno Tapset FUNCTION::RETURNVAL(3stap)

function::returnval - Possible return value of probed function


returnval:long()

None

Return the value of the register in which function values are typically returned. Can be used in probes where $return isn't available. This is only a guess of the actual return value and can be totally wrong. Normally only used in dwarfless probes.

tapset::errno(3stap)

October 2018 SystemTap Tapset Reference