From: Laszlo Ersek <lersek@redhat.com>
To: Marcel Apfelbaum <marcel.a@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: peter.maydell@linaro.org, mst@redhat.com, aik@ozlabs.ru,
mjt@tls.msk.ru, qemu-devel@nongnu.org, stefanha@redhat.com,
afaerber@suse.de, rth@twiddle.net
Subject: Re: [Qemu-devel] [PATCH for-2.0 V3] tests/acpi-test: do not run iasl on big endian machines
Date: Thu, 20 Mar 2014 23:26:47 +0100 [thread overview]
Message-ID: <532B6B27.2080105@redhat.com> (raw)
In-Reply-To: <1395353214.21800.6.camel@localhost.localdomain>
On 03/20/14 23:06, Marcel Apfelbaum wrote:
> On Thu, 2014-03-20 at 22:57 +0100, Paolo Bonzini wrote:
>> Il 20/03/2014 22:14, Marcel Apfelbaum ha scritto:
>>> +# All known versions of iasl on BE machines are broken.
>>> +# TODO: add detection code once a non-broken version makes an appearance.
>>> +if ($iasl -h > /dev/null 2>&1) &&
>>> + (lscpu | grep "Byte Order" | grep --quiet "Little Endian" ); then
>>
>> lscpu is not portable.
> I am open to suggestions...
> I'll try to come up with something else.
The printf and od utilities are portable. You can use printf to print a
character string, and use od to group that character string into
multibyte integers in the native byte order.
Example:
X=$(printf '\336\255\276\357' | od -A n -t x4)
This sets X to " efbeadde" on little endian, and " deadbeef" on big endian.
Laszlo
next prev parent reply other threads:[~2014-03-20 22:27 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-20 21:14 [Qemu-devel] [PATCH for-2.0 V3] tests/acpi-test: do not run iasl on big endian machines Marcel Apfelbaum
2014-03-20 21:57 ` Paolo Bonzini
2014-03-20 22:00 ` Marcel Apfelbaum
2014-03-20 22:06 ` Marcel Apfelbaum
2014-03-20 22:17 ` Peter Maydell
2014-03-20 22:41 ` Marcel Apfelbaum
2014-03-20 23:03 ` Peter Maydell
2014-03-23 9:52 ` Michael S. Tsirkin
2014-03-23 12:31 ` Peter Maydell
2014-03-23 9:51 ` Michael S. Tsirkin
2014-03-20 22:26 ` Laszlo Ersek [this message]
2014-03-20 22:33 ` Marcel Apfelbaum
2014-03-20 22:50 ` Laszlo Ersek
2014-03-20 23:16 ` Paolo Bonzini
2014-03-23 9:49 ` Michael S. Tsirkin
2014-03-23 12:14 ` Peter Maydell
2014-03-23 12:32 ` Marcel Apfelbaum
2014-03-23 12:48 ` Peter Maydell
2014-03-23 13:00 ` Marcel Apfelbaum
2014-03-23 12:51 ` Paolo Bonzini
2014-03-23 13:17 ` Marcel Apfelbaum
2014-03-23 13:58 ` Michael S. Tsirkin
2014-03-24 11:02 ` Andreas Färber
2014-03-25 3:48 ` Alexey Kardashevskiy
2014-03-23 12:32 ` Marcel Apfelbaum
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