From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] RFC: Aligning arch initialisation sequences
Date: Sat, 13 Nov 2010 09:20:35 +0100 [thread overview]
Message-ID: <4CDE4A53.4070106@free.fr> (raw)
In-Reply-To: <4CDE1107.80108@gmail.com>
Le 13/11/2010 05:16, Graeme Russ a ?crit :
> I essence, the gd pointer is a unique global variable available prior to
> relocation. On all other arches, this is achieved by using a reserved
> register which I do not have the luxury of on x86 :(
Dusting off ooooold knowledge of x86 and without even a glance at x86
u-boot... Since GD is the only global used pre-reloc, can you not ensure
it always ends up first in the data segment, and then manage two values
for the DS segment reg, one pre-reloc where only gd can be used, and one
post-reloc where gd and all the other globals can be accessed?
> Regards,
>
> Graeme
Amicalement,
--
Albert.
next prev parent reply other threads:[~2010-11-13 8:20 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-07 10:06 [U-Boot] RFC: Aligning arch initialisation sequences Graeme Russ
2010-11-09 23:35 ` Mike Frysinger
2010-11-13 4:16 ` Graeme Russ
2010-11-13 4:58 ` Mike Frysinger
2010-11-13 6:31 ` Reinhard Meyer
2010-11-13 6:38 ` Reinhard Meyer
2010-11-13 9:51 ` Graeme Russ
2010-11-13 8:17 ` Wolfgang Denk
2010-11-13 21:35 ` Reinhard Meyer
2010-11-13 21:53 ` Wolfgang Denk
2010-11-13 22:38 ` Reinhard Meyer
2010-11-13 22:45 ` Wolfgang Denk
2010-11-13 22:48 ` Reinhard Meyer
2010-11-14 0:07 ` Wolfgang Denk
2010-11-14 0:25 ` Graeme Russ
2010-11-14 0:35 ` Wolfgang Denk
2010-11-14 1:09 ` Graeme Russ
2010-11-14 9:04 ` Wolfgang Denk
2010-11-14 10:21 ` Graeme Russ
2010-11-14 19:43 ` Graeme Russ
2010-11-14 4:07 ` Reinhard Meyer
2010-11-14 9:07 ` Wolfgang Denk
2010-11-14 13:46 ` Reinhard Meyer
2010-11-14 19:36 ` Graeme Russ
2010-11-14 20:16 ` Reinhard Meyer
2010-11-14 21:01 ` Graeme Russ
2010-11-13 8:20 ` Albert ARIBAUD [this message]
2010-11-13 11:18 ` Graeme Russ
2010-11-14 5:10 ` Graeme Russ
2010-11-14 5:48 ` Graeme Russ
2010-11-14 9:16 ` Albert ARIBAUD
2010-11-14 10:30 ` Wolfgang Denk
2010-11-14 12:10 ` Albert ARIBAUD
2010-11-14 15:01 ` Wolfgang Denk
2010-11-14 17:53 ` Albert ARIBAUD
2010-11-14 19:06 ` Wolfgang Denk
2010-11-14 19:29 ` Albert ARIBAUD
2010-11-14 19:55 ` Wolfgang Denk
2010-11-14 20:10 ` Albert ARIBAUD
2010-11-14 20:42 ` Wolfgang Denk
2010-11-14 19:23 ` Wolfgang Denk
2010-11-14 19:34 ` Graeme Russ
2010-11-14 20:05 ` Albert ARIBAUD
2010-11-14 21:27 ` Graeme Russ
2010-11-15 11:08 ` Graeme Russ
2010-11-14 21:51 ` Wolfgang Denk
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