Provided by: systemtap-doc_2.3-1ubuntu1.4_all 

NAME
function::addr - Address of the current probe point.
SYNOPSIS
addr:long()
ARGUMENTS
None
DESCRIPTION
Returns the instruction pointer from the current probe's register state. Not all probe types have
registers though, in which case zero is returned. The returned address is suitable for use with functions
like symname and symdata.
SystemTap Tapset Reference March 2016 FUNCTION::ADDR(3stap)