From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jeremy Brown <jhbrown@domain.hid>
Cc: xenomai-help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] Error building userspace: "selected processor does not support `rsc r7, r7, #0'
Date: Tue, 18 May 2010 01:57:03 +0200 [thread overview]
Message-ID: <4BF1D7CF.7040300@domain.hid> (raw)
In-Reply-To: <AANLkTikwsGEOg6tDNA-ZiaX9P362egUat7lVthR1gzIU@mail.gmail.com>
Jeremy Brown wrote:
>>> .syntax unified
>> That is the key: I presume this means your compiler generates syntax
>> which works both with ARM and thumb2, and rsc does not exist with
>> thumb2. Note that from a performance point of view, this may not be a win.
>
> Ah, success --- based on your note, a colleague of mine determined
> that arranging to pass gcc the (undocumented) "-marm" flag enables the
> compiler to build the unpatched Xenomai 2.5.3 sources from beginning
> to end. For posterity, I recompiled your example code with -O2 -marm,
> and appended it below.
Ok. Does it solve the ICE too?
--
Gilles.
next prev parent reply other threads:[~2010-05-17 23:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 18:05 [Xenomai-help] Error building userspace: "selected processor does not support `rsc r7, r7, #0' Jeremy Brown
2010-05-17 18:25 ` Gilles Chanteperdrix
2010-05-17 18:51 ` Jeremy Brown
2010-05-17 18:54 ` Gilles Chanteperdrix
2010-05-17 18:56 ` Jeremy Brown
2010-05-17 19:01 ` Gilles Chanteperdrix
2010-05-17 19:25 ` Jeremy Brown
2010-05-17 19:30 ` Jeremy Brown
2010-05-17 20:50 ` Jeremy Brown
2010-05-17 23:57 ` Gilles Chanteperdrix [this message]
2010-05-18 0:48 ` Jeremy Brown
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