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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/26151] Add ET_* markers for debug files, and
 enhance ldd (ld.so) to use them.
Date: Mon, 22 Jun 2020 15:30:19 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26151

--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Other issues to consider at the same time:

(1) Kernel objects.
- In Solaris these have special markup to avoid reading them as-if they were
plain ET_REL objects.

(2) dwz multi files are also ET_REL.

One of the proposals for DWARFv5 is Split DWARF Objects (DWO) which is alre=
ady
implemented in some parts of the GNU toolchain.

https://gcc.gnu.org/wiki/DebugFission
http://dwarfstd.org/ShowIssue.php?issue=3D130313.4

This would leave some parts of the DWARF info in the .dwo (ET_REL) file, so=
 the
linker doesn't have to process it. Later these .dwo would be packaged toget=
her
in a .dwp file for use with debuggers.

---

In the case of (1) it's a distinct issue that needs a new markup. Solaris u=
ses
DF_1_KMOD to mark kernel modules. This means that with
https://docs.oracle.com/cd/E88353_01/html/E37839/ld-1.html you can use -z t=
ype
to say: exec, kmod, reloc, shared, pie, and static. That means you don't ha=
ve
to guess.

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