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* [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.7-129-g337b7c4
@ 2012-03-21 15:46 mark
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From: mark @ 2012-03-21 15:46 UTC (permalink / raw)
  To: systemtap-cvs

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- Log -----------------------------------------------------------------
commit 337b7c44b1cd672f76e58166a562c12a300ddb20
Author: Tom Tromey <>
Date:   Fri Mar 16 10:44:14 2012 -0600

    Partial fix for PR12997 - support dwarf4 .debug_types
    This fix does not solve the ET_REL case pointed out in the PR.
    However, it does work ok for ordinary code.
        * dwflpp.cxx (dwflpp::iterate_over_cus): Add 'want_types' argument.
        Iterate over type units.
        (dwflpp::declaration_resolve_other_cus): Update.
        (dwflpp::iterate_single_function): Update.
        (dwflpp::iterate_over_globals): Also allow DW_TAG_type_unit.
        * dwflpp.h (module_tus_read_t): New typedef.
        (dwflpp::iterate_over_cus): Update.
        (dwflpp::module_tus_read): New member.
        * tapsets.cxx (dwarf_query::query_module_dwarf): Update.
        (tracepoint_query::handle_query_module): Update.
        * testsuite/systemtap.pass1-4/debugtypes.cxx: New file.
        * testsuite/systemtap.pass1-4/debugtypes.exp: New file.
        * testsuite/systemtap.pass1-4/debugtypes.stp: New file.
    I built gdb with '-gdwarf-4 -fdebug-types-section'.
    Then I tried this stap script:
    probe process("/home/tromey/gnu/archer/build/gdb/gdb").function("dwarf2_attr") {
          println(@cast($dwarf2_per_objfile, "struct dwarf2_per_objfile")->objfile)
    With Fedora 16 stap:
    barimba. stap -p2 /tmp/q.stp
    semantic error: type definition 'struct dwarf2_per_objfile' not found: identifier '@cast' at /tmp/q.stp:2:15
            source:       println(@cast($dwarf2_per_objfile, "struct dwarf2_per_objfile")->objfile)
    Pass 2: analysis failed.  Try again with another '--vp 01' option.
    After the patch, this works.


Summary of changes:
 dwflpp.cxx                                 |   31 +++++++++++++++++++++++----
 dwflpp.h                                   |    9 ++++++-
 tapsets.cxx                                |    4 +-
 testsuite/systemtap.pass1-4/debugtypes.cxx |   21 +++++++++++++++++++
 testsuite/systemtap.pass1-4/debugtypes.exp |   16 ++++++++++++++
 testsuite/systemtap.pass1-4/debugtypes.stp |    6 +++++
 6 files changed, 78 insertions(+), 9 deletions(-)
 create mode 100644 testsuite/systemtap.pass1-4/debugtypes.cxx
 create mode 100644 testsuite/systemtap.pass1-4/debugtypes.exp
 create mode 100755 testsuite/systemtap.pass1-4/debugtypes.stp

systemtap: system-wide probe/trace tool

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