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Re: [PATCH 2/3] libdw: Update acceptable forms and attributes for dwarf_getlocation.

From: Mark Wielaard <mark at klomp dot org>
To: elfutils-devel at sourceware dot org
Date: Fri, 10 Nov 2017 16:38:29 +0100
Subject: Re: [PATCH 2/3] libdw: Update acceptable forms and attributes for dwarf_getlocation.
Authentication-results: sourceware.org; auth=none
References: <1509838266-10337-1-git-send-email-mark@klomp.org> <1509838266-10337-2-git-send-email-mark@klomp.org>

On Sun, 2017-11-05 at 00:31 +0100, Mark Wielaard wrote:
> dwarf_getlocation has to know which attributes can contain a DWARF
> expression or location list because the form alone might be ambiguous.
> 
> Since DWARF4 there is DW_FORM_exprloc so always accept that. But for older
> DWARF or location lists we cannot just check for DW_FORM_sec_offset since
> that could be a reference to diffent kinds of sections (based on attribute).
> 
> Update the attribute list based on the latest DWARF5 encodings table.
> Note that DW_AT_call_origin wasn't added because that seems to be a
> typo in the DWARF5 spec. http://dwarfstd.org/ShowIssue.php?issue=171103.1

Pushed to master.

References:
- [PATCH 1/3] readelf: Handle DW_OP_GNU_variable_value.
  - From: Mark Wielaard
- [PATCH 2/3] libdw: Update acceptable forms and attributes for dwarf_getlocation.
  - From: Mark Wielaard

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