[Bug testsuite/11722] New: on ppc, usymbols.exp should be probing syscall.rt_sigaction32, not syscall.rt_sigaction

[dsmith at redhat dot com]

On ppc64, usymbols.exp is failing.  The testcase probes 'syscall.rt_sigaction',
but because ppc64 has a 64-bit kernel but a 32-bit userspace, that will never
get hit.  Instead 'syscall.rt_sigaction32' should (also) be probed, since that
will get hit on ppc64.

Note however, that it can't use the same probe handler as rt_sigaction because
'$act' has a different type:

rt_sigaction:   const struct sigaction __user *act
rt_sigaction32: const struct sigaction32 __user *act

(Also note that that bug #11721 would apply here also - '$act' can't be accessed
directly since it is userspace memory, not kernel memory.)

-- 
           Summary: on ppc, usymbols.exp should be probing
                    syscall.rt_sigaction32, not syscall.rt_sigaction
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: dsmith at redhat dot com
  GCC host triplet: ppc


http://sourceware.org/bugzilla/show_bug.cgi?id=11722

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