Hi Jeroen, On 9 February 2015 at 16:20, Jeroen Hofstee <jer...@myspectrum.nl> wrote: > 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?
No I see no such problem but I can understand why it might happen. There is a USE_DL_PREFIX in malloc.h which might fix the naming clash. U-Boot sandbox uses mmap() to allocate memory from the OS. It may be worth sending a patch even if you are not quite there? I suspect we can adjust the Makefile to use U-Boot's internal malloc() only for U-Boot and not for the libraries it uses. I've done that sort of thing before and remember it being a little painful. > > > 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) > Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
