Provided by: systemtap-doc_5.0-2ubuntu1_amd64 

NAME
function::fastcall - Mark function as declared fastcall
SYNOPSIS
fastcall()
ARGUMENTS
None
DESCRIPTION
Call this function before accessing arguments using the *_arg functions if the probed kernel function was declared fastcall in the source.
SEE ALSO
tapset::registers(3stap) SystemTap Tapset Reference November 2023 FUNCTION::FASTCALL(3stap)