[Bug translator/4843] New: systemtap doesn't support probing assembler functions anymore

[andi at firstfloor dot org]

I have an old stp script that worked with some older systemtap version, but now
fails with a current one (CVS of 070718). After some investigation
it looks like stap cannot hook any pure assembler functions anymore.

e.g. on x86-64

# cat getuser.stp 
probe kernel.function("__get_user_4") {
}
# stap getuser.stp 
semantic error: no match for probe point while resolving probe point
kernel.function("__get_user_4")
Pass 2: analysis failed.  Try again with more '-v' (verbose) options.

The function is there of course

# grep get_user_4 /proc/kallsyms
ffffffff80341f90 T __get_user_4

I would like to do this again. Can the regression be fixed please?

-- 
           Summary: systemtap doesn't support probing assembler functions
                    anymore
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: andi at firstfloor dot org
  GCC host triplet: x86_64-linux


http://sourceware.org/bugzilla/show_bug.cgi?id=4843

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