public inbox for libc-alpha@sourceware.org
 help / color / mirror / Atom feed
From: Florian Weimer <fweimer@redhat.com>
To: Alan Modra via Libc-alpha <libc-alpha@sourceware.org>
Cc: Alan Modra <amodra@gmail.com>,
	 Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Subject: Re: [PATCH 5/5] Enable static-pie on powerpc64
Date: Thu, 27 Jan 2022 19:39:44 +0100	[thread overview]
Message-ID: <87tudpkopb.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <Ye4lrkAX7ED7mq0V@squeak.grove.modra.org> (Alan Modra via Libc-alpha's message of "Mon, 24 Jan 2022 14:36:06 +1030")

* Alan Modra via Libc-alpha:

> diff --git a/sysdeps/powerpc/powerpc64/configure.ac b/sysdeps/powerpc/powerpc64/configure.ac
> index 1f3d54414c..5eedd2f81c 100644
> --- a/sysdeps/powerpc/powerpc64/configure.ac
> +++ b/sysdeps/powerpc/powerpc64/configure.ac
> @@ -1,6 +1,13 @@
>  GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
>  # Local configure fragment for sysdeps/powerpc/powerpc64.
>  
> +dnl It is always possible to access static and hidden symbols in an
> +dnl position independent way.
> +AC_DEFINE(PI_STATIC_AND_HIDDEN)

I must say that this is the most surprising glibc patch I've seen in a
while.

But I think it's true—once you've set up the TOC pointer, the link
editor can generate a fixed offset offset for local and hidden symbols.
Has this always been the case for powerpc64le?

Thanks,
Florian


  reply	other threads:[~2022-01-27 18:39 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-23 12:42 [PowerPC64] Use medium model toc accesses throughout Alan Modra
2022-01-24  3:47 ` [PATCH 2/5] [PowerPC64] Set up thread register for _dl_relocate_static_pie Alan Modra
2022-02-16 23:02   ` Paul E Murphy
2022-02-19  0:49     ` Alan Modra
2022-01-24  3:50 ` [PATCH 3/5] [PowerPC] Relocate stinfo->main Alan Modra
2022-01-24  4:48   ` H.J. Lu
2022-01-24  6:51     ` Alan Modra
2022-01-24  3:52 ` [PATCH 4/5] Constify a variable in dl_vdso_vsym Alan Modra
2022-01-24  4:06 ` [PATCH 5/5] Enable static-pie on powerpc64 Alan Modra
2022-01-27 18:39   ` Florian Weimer [this message]
2022-01-28  8:45     ` Alan Modra
2022-01-28 17:48 ` [PowerPC64] Use medium model toc accesses throughout Paul E Murphy
2022-01-29  1:24   ` Alan Modra
2022-02-28  6:40 ` [PATCH v2 0/4] PowerPC64 static-pie Alan Modra
2022-02-28  6:40   ` [PATCH v2 1/4] powerpc64: Use medium model toc accesses throughout Alan Modra
2022-04-08 22:28     ` Tulio Magno Quites Machado Filho
2022-02-28  6:40   ` [PATCH v2 2/4] powerpc64: Set up thread register for _dl_relocate_static_pie Alan Modra
2022-04-08 22:28     ` Tulio Magno Quites Machado Filho
2022-02-28  6:40   ` [PATCH v2 3/4] powerpc: Relocate stinfo->main Alan Modra
2022-04-08 22:32     ` Tulio Magno Quites Machado Filho
2022-02-28  6:40   ` [PATCH v2 4/4] powerpc64: Enable static-pie Alan Modra
2022-04-08 22:49     ` Tulio Magno Quites Machado Filho
2022-04-14  1:16       ` Alan Modra
2022-04-14  3:42         ` Fangrui Song
2022-04-20  7:21         ` [PATCH v3] " Alan Modra
2022-03-04 12:48   ` [PATCH v2 0/4] PowerPC64 static-pie Alan Modra
2022-04-08  8:06     ` Alan Modra
2022-04-09  0:14       ` Fangrui Song
2022-04-14  0:33         ` Alan Modra
2022-04-14  1:54           ` DT_RELR without libc.so dependency H.J. Lu
2022-04-14  3:43             ` Fangrui Song
2022-04-14  5:18             ` Alan Modra
2022-04-14 17:55               ` H.J. Lu
2022-04-08 22:27   ` [PATCH v2 0/4] PowerPC64 static-pie Tulio Magno Quites Machado Filho
2022-04-11  1:38     ` Alan Modra

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87tudpkopb.fsf@oldenburg.str.redhat.com \
    --to=fweimer@redhat.com \
    --cc=amodra@gmail.com \
    --cc=libc-alpha@sourceware.org \
    --cc=tuliom@linux.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).