[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.5-182-gd0ea46c

[dsmith@sourceware.org]

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commit d0ea46ceac2e72fe0b86269ea50c004711148158
Author: David Smith <dsmith@redhat.com>
Date:   Tue Apr 21 08:21:34 2009 -0500

    Correctly handle $syscall in process(PID_OR_PATH).syscall.return probes.
    2009-04-21  David Smith  <dsmith@redhat.com>
    
    	* tapsets.cxx (utrace_derived_probe::utrace_derived_probe): If
    	during target-variable-expanding the probe, we added a new block
    	or probe, add them.
    	(utrace_var_expanding_visitor::visit_target_symbol_cached): New
    	function to cache target variables in a generated syscall probe to
    	use in syscall.return probes.
    	(utrace_var_expanding_visitor::visit_target_symbol_context): In a
    	syscall.return probe, you can't access $syscall.  So use
    	visit_target_symbol_cached() to cache the value for use here.
    	* testsuite/systemtap.base/utrace_syscall_args.stp: Test use of
    	$syscall in syscall.return probes.

-----------------------------------------------------------------------

Summary of changes:
 tapsets.cxx                                      |  262 +++++++++++++++++++++-
 testsuite/systemtap.base/utrace_syscall_args.stp |   40 ++++
 2 files changed, 297 insertions(+), 5 deletions(-)


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