From: Florian Weimer <fw@deneb.enyo.de>
To: Carlos O'Donell <carlos@redhat.com>
Cc: "H.J. Lu" <hjl.tools@gmail.com>,
Generic System V Application Binary Interface
<generic-abi@googlegroups.com>,
gnu-gabi@sourceware.org
Subject: Re: RFC: Audit external function called indirectly via GOT
Date: Mon, 01 Jan 2018 00:00:00 -0000 [thread overview]
Message-ID: <874ll8uker.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <76f5551d-e8dc-4915-e3d8-54a2305a5718@redhat.com> (Carlos O'Donell's message of "Thu, 22 Mar 2018 10:36:52 -0500")
* Carlos O'Donell:
> Well, Levin's "Linker's and Loaders"
> https://www.iecc.com/linker/linker10.html, is the immediate reference
> that I have on my shelf, and that developers working on glibc/binutils
> should read.
Thanks, I didn't know that.
>> My understanding is that H.J.'s proposal requires changes when running
>> in non-audit mode. It certainly requires relinking all binaries,
>> perhaps even with special flags.
>
> It would require a relink only to fix existing binaries which are broken
> by the use of -fno-plt, which is not an option that has seen general use
> anywhere that I am aware of.
I don't think that's actually true. BFD ld has not emitted
R_X86_64_JUMP_SLOT relocations with -z now for quite some time now.
This optimization predates -fno-plt.
Please check some older BIND_NOW binaries to confirm this.
Does this alter your position?
next prev parent reply other threads:[~2018-03-22 16:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-01 0:00 H.J. Lu
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` Carlos O'Donell
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Alan Modra
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Alan Modra
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` Carlos O'Donell
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Carlos O'Donell
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Carlos O'Donell
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Cary Coutant
2018-01-01 0:00 ` Florian Weimer [this message]
2018-01-01 0:00 ` H.J. Lu
2018-01-01 0:00 ` Florian Weimer
2018-01-01 0:00 ` H.J. Lu
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