Re: [crosstool-ng] ARM EABI problem

["Yann E. MORIN" <yann dot morin dot 1998 at anciens dot enib dot fr>]

Hello!

On Saturday 10 May 2008 13:58:42 Matthias Kaehlcke wrote:
> i use crosstool-ng to generate an ARM EABI toolchain. the toolchain
> builds without problems, but doesn't seem to generate valid
> binaries. when booting the system with a rootfs generated using the
> toolchain the kernel halts at:
> Freeing init memory: 120K

What is it booting into? I have a similar problem (EABI _and_ OABI) where
setjmp from uClibc causes segfaults, though setjmp is most probalbly not the
real culprit. I suspect a problem with gas. But I might be highly wrong here.

> the target is an kb9202b board with a AT91RM9200 cpu. the kernel is
> compiled with EABI support.

Well, EABI is still marked as being EXPERIMENTAL, because I don't master it
yet...

A toolchain built with ct-ng builds linux kernels just fine. The problems
arise in userland...

> the same rootfs built with an EABI toolchain of the emdebian
> project works. 
> on the working EABI rootfs i put a statically linked hello world
> program, compiled with the crosstool-ng EABI toolchain. when i try to
> execute it the following message is shown:
> # ./hello_world_static
> Illegal instruction

See other post: arm-v4 vs. arm-v5

Anyway, I'm inverstigating this EABI problem...

Could you just try to build both a kernel and a static hello world with
your EABI toolchain build with ct-ng? Mine is working just fine here.
Problems arise with more complex programs an dynamic linking.

Regards,
Yann E. MORIN.

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