From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeroen Hofstee <jeroen@myspectrum.nl>
Date: Tue, 10 Feb 2015 00:20:49 +0100
Subject: [U-Boot] sandbox on FreeBSD
In-Reply-To: <CAPnjgZ2LPkFcYkSYRZQ+SwRVqRqR0pT5HNL1xUw5v6U-8BWj2w@mail.gmail.com>
References: <54D27501.7040304@myspectrum.nl>
 <CAF=5bWceguR_vLGt_0dAn+TmXGUu_PVBCg-tMR5n72JktFJyHg@mail.gmail.com>
 <54D3C9D1.6030905@myspectrum.nl>
 <CAPnjgZ1hVpcYqFF5ckXbvMu=tQS2eywZ4+gMdCwypK1=ouK0uQ@mail.gmail.com>
 <54D51C5F.7090500@myspectrum.nl> <54D526DB.6080303@googlemail.com>
 <CAPnjgZ0yoQPzFqnuu8Rsv_xtGSNib8p4r2W4sOXogC8WCkisLg@mail.gmail.com>
 <54D5E332.50401@myspectrum.nl>
 <CAPnjgZ2LPkFcYkSYRZQ+SwRVqRqR0pT5HNL1xUw5v6U-8BWj2w@mail.gmail.com>
Message-ID: <54D940D1.1050507@myspectrum.nl>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Hello Simon,

On 02/07/15 16:10, Simon Glass wrote:
>
>>
>> I am not giving up, I think it is sane if a tool which adds a header and
>> a checksum does not use linker magic.  Sandbox biggest problem is
>> not the linking, but the fact that linux headers and std* are included,
>> it is a different topic.
> This should be easy to fix in os.c since all the inclusions are
> isolated to there. I'd been keen to see a patch for that. Also if you
> want LCD support, sdl.c.

I had a look at this and hacked my way through and linked it
with a GNU ld (GNU Binutils) 2.25. So at least I have a binary, but
unfortunately it doesn't work, and errors out with:

Fatal error 'Can't allocate initial thread' at line 350 in file 
/usr/src/lib/libthr/thread/thr_init.c (errno = 2)


The reason for this seems to be void _thread_init_hack(void) 
__attribute__ ((constructor));
which calls _libpthread_init -> _thr_alloc -> calloc and that calls the 
version
in u-boots version of dl-malloc which is not initialized yet.


Did you encounter such problems on linux as well? Or does libpthread simply
not allocate memory before reaching main?


Regards,
Jeroen


ldd ../u-boot-build/u-boot
../u-boot-build/u-boot:
librt.so.1 => /usr/lib/librt.so.1 (0x800896000)
libSDL-1.2.so.0 => /usr/local/lib/libSDL-1.2.so.0 (0x800a9c000)
libthr.so.3 => /lib/libthr.so.3 (0x800d02000)
libc.so.7 => /lib/libc.so.7 (0x800f27000)
libm.so.5 => /lib/libm.so.5 (0x8012d0000)
libvgl.so.6 => /usr/lib/libvgl.so.6 (0x8014f8000)
libaa.so.1 => /usr/local/lib/libaa.so.1 (0x801701000)
libusbhid.so.4 => /usr/lib/libusbhid.so.4 (0x801919000)
libncurses.so.8 => /lib/libncurses.so.8 (0x801b1d000)