RE: [arm-gnu] Specifying Load Address: undefined __exidx_start, __exidx_end

["Daniel Jacques" <jacques.daniel@xxxxxxxxxxx>]

Hello David,

I am facing to the same problem. 
So, I'd like to know if you succeeded to solve it.
The linker script used in my case is armelf_linux_eabi.xr, but I don't know how to modify it to resolve the undefined reference to __exidx_start and __exidx_end. 

Thanks and Regards,
Jacques


-----Original Message-----
From: David Engraf [mailto:engraf.david@xxxxxxxxxxxxxxxxxxxxxxxxxxxx] 
Sent: vendredi 23 décembre 2005 09:34
To: 'Carlos O'Donell'
Cc: arm-gnu@xxxxxxxxxxxxxxxx
Subject: Re: [arm-gnu] Specifying Load Address: undefined __exidx_start, __exidx_end

Where can I find the default linker script? In the directory
/arm-none-eabi/lib/ldscripts/ I found some ldscript files, but which one is
the right one?

Cheers David

> Von: Carlos O'Donell [mailto:carlos@xxxxxxxxxxxxxxxx]
> Gesendet: Donnerstag, 22. Dezember 2005 21:57
> An: David Engraf
> Cc: arm-gnu@xxxxxxxxxxxxxxxx
> Betreff: Re: [arm-gnu] Specifying Load Address: undefined __exidx_start,
> __exidx_end
> 
> On Thu, Dec 22, 2005 at 12:29:53PM +0100, David Engraf wrote:
> > Tools:  CodeSourcery 2005q3-2, Linux host, "bare metal" target.
> >
> > Target CPU: AT91R40008
> >
> > I want to create a new ldscript file for my hardware in order to define
> the
> > ROM/RAM start address. When I use my own ldscript file, the linker
> generates
> > the following error:
> 
> Thank you for your interest in our Sourcery G++ Toolchains!
> 
> > /usr/local/bin/../lib/gcc/arm-none-eabi/3.4.4/libgcc.a(unwind-arm.o): In
> > function `get_eit_entry':unwind-arm.c:(.text+0x45c): undefined reference
> to
> > `__exidx_start'
> > :unwind-arm.c:(.text+0x460): undefined reference to `__exidx_end'
> > collect2: ld returned 1 exit status
> > make: *** [test.elf] Fehler 1
> 
> The two missing symbols are part of the exception unwinding mechanism.
> 
> > What does __exidx_start and __exidx_end do? Where should I place this
> > section in my ldscript file? Is there any startup code I need, because I
> > have my own startup code for the remap of the arm?
> 
> I would recommend looking at the default linker script and modifying as
> required.
> 
> Cheers,
> Carlos.
> --
> Carlos O'Donell
> CodeSourcery, LLC
> carlos@xxxxxxxxxxxxxxxx



____________
Virus checked by G DATA AntiVirusKit
Version: AVK 16.2365 from 23.12.2005