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| author | jimblandy <jimblandy@4c0a9323-5329-0410-9bdc-e9ce6186880e> | 2012-02-01 15:01:54 +0000 |
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| committer | jimblandy <jimblandy@4c0a9323-5329-0410-9bdc-e9ce6186880e> | 2012-02-01 15:01:54 +0000 |
| commit | 5e4f6feaf64a5a85690916e5f34a889f9d2a0c45 (patch) | |
| tree | 53de9b8148cb366219d8a11a540d8f8d47399ce6 /NEWS | |
| parent | Breakpad DWARF support: Remove extraneous breaks following returns in dwarf2r... (diff) | |
| download | breakpad-5e4f6feaf64a5a85690916e5f34a889f9d2a0c45.tar.xz | |
Breakpad DWARF: Add support for DWARF 4 attribute forms.
This patch allows Breakpad's DWARF reader to at least read or skip
attributes using the new forms defined in version 4 of the DWARF
specification, instead of crashing.
Attributes encoded using DW_FORM_flag_present, DW_FORM_sec_offset, and
DW_FORM_exprloc should work fine now. However, compilation units using
DW_FORM_ref_sig8 to refer to types in .debug_types will need further work
to support. (GCC 4.6.2 does not emit .debug_types sections.)
Specifically:
- dwarf2reader::DwarfForm gets new values.
- dwarf2reader::Dwarf2Handler and dwarf2reader::DIEHandler get new handler
methods, named ProcessAttributeSignature, for DW_FORM_ref_sig8 attributes.
- dwarf2reader::CompilationUnit reads DW_FORM_ref_sig8 attributes, and
passes them to ProcessAttributeSignature. It also gets support for
DW_FORM_sec_offset, DW_FORM_exprloc, and DW_FORM_flag_present, using the
existing appropriate ProcessAttribute* methods.
- dwarf2reader::DIEDispatcher passes through ProcessAttributeSignature
attributes to its DIEHandler.
- Unit tests are updated.
a=jimb, r=ted.mielczarek
Review URL: http://breakpad.appspot.com/343003/
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@912 4c0a9323-5329-0410-9bdc-e9ce6186880e
Diffstat (limited to 'NEWS')
0 files changed, 0 insertions, 0 deletions