Provided by: systemtap-doc_2.3-1ubuntu1_all bug

NAME

       function::registers_valid - Determines validity of register and u_register in current
       context

SYNOPSIS

           registers_valid:long()

ARGUMENTS

       None

DESCRIPTION

       This function returns 1 if register and u_register can be used in the current context, or
       0 otherwise. For example, registers_valid returns 0 when called from a begin or end probe.