From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH] arch/arm: add support for thumb(1) mode
Date: Thu, 18 Jul 2013 09:19:17 +0200 [thread overview]
Message-ID: <20130718091917.06476a78@skate> (raw)
In-Reply-To: <51E719D4.4070304@zacarias.com.ar>
Dear Gustavo Zacarias,
On Wed, 17 Jul 2013 19:25:24 -0300, Gustavo Zacarias wrote:
> On 07/17/2013 04:58 PM, Thomas Petazzoni wrote:
>
> > Ok, so if I select "Thumb" for ARMv5T, but use a normal ARMv5
> > external toolchain (compiled ARM, not Thumb), it should work. Am I
> > correct?
>
> Yes, because at the moment it's a NOP, we don't do anything regarding
> thumb and external toolchains :)
We definitely do something. If you enable Thumb in the configuration,
then -mthumb gets hard-coded into the external toolchain wrapper. If you
enable ARM in the configuration, then -marm gets hard-coded into the
external toolchain wrapper.
See:
http://git.buildroot.net/buildroot/tree/toolchain/toolchain-external/ext-tool.mk#n183
and:
http://git.buildroot.net/buildroot/tree/toolchain/toolchain-external/ext-toolchain-wrapper.c#n50.
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2013-07-18 7:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-17 15:39 [Buildroot] [PATCH] arch/arm: add support for thumb(1) mode Gustavo Zacarias
2013-07-17 15:58 ` Thomas Petazzoni
2013-07-17 16:03 ` Gustavo Zacarias
2013-07-17 19:58 ` Thomas Petazzoni
2013-07-17 22:25 ` Gustavo Zacarias
2013-07-18 7:19 ` Thomas Petazzoni [this message]
2013-07-18 11:08 ` Gustavo Zacarias
2013-07-18 11:24 ` Thomas Petazzoni
2013-07-18 8:10 ` Peter Korsgaard
2013-07-18 16:07 ` Gustavo Zacarias
2013-07-18 22:32 ` Peter Korsgaard
2013-07-18 22:46 ` Gustavo Zacarias
2013-07-19 8:19 ` Peter Korsgaard
2013-07-19 13:06 ` Gustavo Zacarias
2013-07-17 22:22 ` Peter Korsgaard
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