[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.7-97-g56212da

[jistone at sourceware dot org]

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- Log -----------------------------------------------------------------
commit 56212da92dae36e5870ac6149c89d967fcab10f9
Author: Josh Stone <jistone@redhat.com>
Date:   Fri May 8 18:32:17 2009 -0700

    PR10054: Unify the translate_components errors
    
    Since translate_components is the one that knows the details of its
    failures, it makes more sense to let it throw its own errors, instead of
    relying on each caller to do it.  The function now always either returns
    successfully or throws an error.

commit 0730bfbd2665aef93d6fae287f3623a51f243540
Author: Josh Stone <jistone@redhat.com>
Date:   Fri May 8 17:50:28 2009 -0700

    Refactor anonymous lookups in translate_components
    
    The previous code recursed the entirety of translate_components, and
    it seemed to be restarting the components list every time, so it would
    only work if the anonymous portion was the first component.  Even then,
    examining the code output by semok/thirtythree revealed that it wasn't
    fully translating the locations when multiple anonymous pieces were
    involved.
    
    Instead, it now recurses in a separate function, find_struct_member,
    which does just enough to find the member die and return.  It also
    builds a vector of the locations passed through, so translate_components
    can output code for the full chain of anonymity.
    
    The generated code for semok/thirtythree's $page->mapping now appears to
    match the offsets from my manual inspection of struct page.  I also
    added a test for $page->first_page->mapping, which works now but would
    segfault the old code.

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

Summary of changes:
 tapsets.cxx                     |  260 ++++++++++++++++-----------------------
 testsuite/semok/thirtythree.stp |    6 +-
 2 files changed, 112 insertions(+), 154 deletions(-)


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systemtap: system-wide probe/trace tool