[U-Boot] sandbox on FreeBSD

[Jeroen Hofstee]

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)