From: Alan Modra <amodra@gmail.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: Binutils <binutils@sourceware.org>
Subject: Re: PowerPC64 DT_RELR
Date: Sat, 22 Jan 2022 14:58:26 +1030 [thread overview]
Message-ID: <YeuH6teztlxzIhQ8@squeak.grove.modra.org> (raw)
In-Reply-To: <CAMe9rOquOhtuedKmEqMAxjhybKv-xiVz6KzMs4MGTjyb-i=3FA@mail.gmail.com>
On Wed, Jan 19, 2022 at 02:56:07PM -0800, H.J. Lu wrote:
> Does PowerPC64 support static PIE? If yes, it may need more linker changes.
No. There are things in glibc that need fixing. We have small-model
toc relocs being used in assembly. This results in the linker
refusing to do toc/got indirect to toc pointer relative code
optimisation for those sequences. So we get toc/got entries with
relative relocations that result in segfaults when static-pie binaries
are trying to relocate themselves.
What were the linker changes you thought would be necessary?
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2022-01-22 4:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 0:53 Alan Modra
2022-01-18 1:08 ` H.J. Lu
2022-01-18 13:32 ` H.J. Lu
2022-01-18 23:24 ` Alan Modra
2022-01-19 22:56 ` H.J. Lu
2022-01-22 4:28 ` Alan Modra [this message]
2022-01-22 13:04 ` H.J. Lu
2022-01-23 13:51 ` H.J. Lu
2022-03-02 8:41 ` Alan Modra
2022-03-03 2:33 ` PowerPC64 DT_RELR relative reloc addresses Alan Modra
2022-03-09 1:25 ` PowerPC64 DT_RELR Fangrui Song
[not found] ` <MWHPR1201MB0110441CD99C43F8215D15EBCB0A9@MWHPR1201MB0110.namprd12.prod.outlook.com>
2022-03-09 21:07 ` Alan Modra
2022-06-09 10:57 ` Florian Weimer
2022-06-09 22:57 ` Alan Modra
2022-06-09 23:53 ` Alan Modra
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