Re: [arm-gnu] .ARM.exidx and .ARM.extab

[Carlos O'Donell <carlos@xxxxxxxxxxxxxxxx>]

42Bastian Schick wrote:
> Carlos O'Donell schrieb:
> > low-level compiler helper routine contains minimal unwind information 
> > (8 bytes).
>
> Why does a C function need unwind information ?

In general? To support cancellation requirements on POSIX compliant 
systems, but on bare-metal it is not required.

What version of Sourcery G++ are you using? The latest 2009q3-68 has a 
fix for this, and the linker should remove that unwind information for 
the compiler helper routines. What does your linker map file say is in 
the section (-Wl,-Map,linker.map)?

The only unwind information should be 8 bytes for the reset function, 
and we are working on eventually removing that.

Cheers,
Carlos.
--
Carlos O'Donell
CodeSourcery
carlos@xxxxxxxxxxxxxxxx
(650) 331-3385 x716