From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mpc83xx: Add -fpic relocation support
Date: Wed, 13 Oct 2010 08:30:33 +0200 [thread overview]
Message-ID: <4CB55209.2080803@free.fr> (raw)
In-Reply-To: <OFCD5F81D1.06E03365-ONC12577BA.0071B95E-C12577BA.00736665@transmode.se>
Le 12/10/2010 23:00, Joakim Tjernlund a ?crit :
> Yes, but the difference isn't really the arch. It is the -mrelocatable
> flag that is the big difference.
Not only: obviously, implementing GOT relocation is not done the same on
both archs, and it simply is not beneficial on ARM wrt PPC in terms of
instructions. I did a pretty extensive run of tests with and without
-fPIC and -fPIE on ARM, and GOT relocation clearly makes code bigger,
whereas it does not PPC.
This simply implies that -fPIC is a better choice for PPC (and hence
-mrelocatable) while -fpie is a better one for ARM.
Amicalement,
--
Albert.
next prev parent reply other threads:[~2010-10-13 6:30 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-12 12:38 [U-Boot] [PATCH] mpc83xx: Add -fpic relocation support Joakim Tjernlund
2010-10-12 12:52 ` Wolfgang Denk
2010-10-12 13:04 ` Joakim Tjernlund
2010-10-12 13:47 ` Wolfgang Denk
2010-10-12 14:10 ` Joakim Tjernlund
2010-10-12 17:31 ` Kim Phillips
2010-10-12 17:38 ` Scott Wood
2010-10-12 17:41 ` Joakim Tjernlund
2010-10-12 18:19 ` Kim Phillips
2010-10-12 18:25 ` Scott Wood
2010-10-12 18:38 ` Kim Phillips
2010-10-12 19:09 ` Joakim Tjernlund
2010-10-12 19:17 ` Joakim Tjernlund
2010-10-12 19:54 ` Kim Phillips
2010-10-12 21:23 ` Joakim Tjernlund
2010-10-12 21:30 ` Scott Wood
2010-10-13 9:44 ` Joakim Tjernlund
2010-10-12 19:13 ` Joakim Tjernlund
2010-10-12 19:20 ` Scott Wood
2010-10-12 19:51 ` Joakim Tjernlund
2010-10-12 20:16 ` Scott Wood
2010-10-12 20:40 ` Joakim Tjernlund
2010-10-12 20:48 ` Scott Wood
2010-10-12 21:06 ` Joakim Tjernlund
2010-10-12 15:52 ` Scott Wood
2010-10-12 17:11 ` Joakim Tjernlund
2010-10-12 17:41 ` Albert ARIBAUD
2010-10-12 18:11 ` Joakim Tjernlund
2010-10-12 20:37 ` Albert ARIBAUD
2010-10-12 21:00 ` Joakim Tjernlund
2010-10-13 6:30 ` Albert ARIBAUD [this message]
2010-10-13 7:07 ` Joakim Tjernlund
2010-10-13 9:05 ` Albert ARIBAUD
2010-10-13 9:34 ` Joakim Tjernlund
2010-10-13 21:25 ` Joakim Tjernlund
2010-10-14 6:25 ` Albert ARIBAUD
2010-10-13 7:21 ` J. William Campbell
2010-10-13 8:37 ` Joakim Tjernlund
2010-10-12 17:37 ` Wolfgang Denk
2010-10-13 9:41 ` [U-Boot] [PATCHv2] " Joakim Tjernlund
2010-10-13 21:11 ` [U-Boot] [PATCHv3] " Joakim Tjernlund
2010-10-20 6:32 ` Joakim Tjernlund
2010-10-28 8:46 ` Joakim Tjernlund
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=4CB55209.2080803@free.fr \
--to=albert.aribaud@free.fr \
--cc=u-boot@lists.denx.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.