From: "H.J. Lu" <hjl.tools@gmail.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [PATCH] Don't use PLT nor GOT in libc.a [BZ #20750]
Date: Fri, 04 Nov 2016 19:25:00 -0000 [thread overview]
Message-ID: <CAMe9rOrBerHaGT4M00nnyayQZsD41b+SPateKMOdfHZE5dF11Q@mail.gmail.com> (raw)
In-Reply-To: <f3a3acd2-044a-c4bf-11e4-ecee4caf5324@redhat.com>
On Fri, Nov 4, 2016 at 12:03 PM, Florian Weimer <fweimer@redhat.com> wrote:
> On 11/04/2016 06:47 PM, H.J. Lu wrote:
>>
>> There is no need to use PLT nor GOT in libc.a to branch to a function,
>> regardless whether libc.a is compiled with PIC or not.
>>
>> Tested on x86-64. OK for master?
>
>
> Isn't this header file used outside of libc as well?
It is used for other .a files. If they aren't used to create static binaries,
PLT/GOT may be used. The resulting executable will work correctly.
> (And the commit message should mention that this change is specific to
> x86_64.)
>
I will update it.
--
H.J.
next prev parent reply other threads:[~2016-11-04 19:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 17:47 H.J. Lu
2016-11-04 19:03 ` Florian Weimer
2016-11-04 19:25 ` H.J. Lu [this message]
2016-11-07 16:03 ` Florian Weimer
2016-11-07 17:14 ` H.J. Lu
2016-11-24 11:58 ` Allan McRae
2016-11-25 8:43 ` Florian Weimer
2016-11-28 17:46 ` H.J. Lu
2016-11-28 18:27 ` Joseph Myers
2016-11-28 21:32 ` H.J. Lu
2016-11-28 17:54 ` Szabolcs Nagy
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