From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Charles Steinkuehler <charles@steinkuehler.net>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] ARM/BeagleBone Thumb2 Kernels
Date: Fri, 24 Jan 2014 13:18:29 +0100 [thread overview]
Message-ID: <52E25A15.4080406@xenomai.org> (raw)
In-Reply-To: <52E25099.9070107@steinkuehler.net>
On 01/24/2014 12:38 PM, Charles Steinkuehler wrote:
> As I understand it, the issue arises as the kernel grows larger and the
> distance between the branch and it's target increases. My vmlinux for
> the (fixed Thumb2 version) BeagleBone kernel is currently weighing in at
> 13225004 bytes.
>
That is precisely the thing I do not understand: the jump goes from
entry-armv.S to entry-common.S which should remain close since they
follow each other on the link-edit command line. Since the source files
are assembly, the distance should more or less be the same, whatever the
compilation options. And if they are not close, this is where the bug
is, because this assembly is used for every syscall and every interrupt.
--
Gilles.
next prev parent reply other threads:[~2014-01-24 12:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-24 2:56 [Xenomai] ARM/BeagleBone Thumb2 Kernels Charles Steinkuehler
2014-01-24 10:52 ` Gilles Chanteperdrix
2014-01-24 11:22 ` Gilles Chanteperdrix
2014-01-24 11:38 ` Charles Steinkuehler
2014-01-24 12:18 ` Gilles Chanteperdrix [this message]
2014-01-24 11:53 ` Charles Steinkuehler
2014-01-24 12:28 ` Gilles Chanteperdrix
2014-01-25 18:14 ` Gilles Chanteperdrix
2014-01-25 17:48 ` Charles Steinkuehler
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