OPENCORES.ORG

* gameboy_1999@h... <gameboy_1999@h...> [2005-08-04

----- Original Message ----- 
From: "Stephan" <stephan@m...>
To: <openrisc@o...>
Sent: Monday, August 29, 2005 10:14 PM
Subject: Re: [openrisc] about ld can't open crt0.o

>* gameboy_1999@h... <gameboy_1999@h...> [2005-08-04 
>12:53:15]:
>
>> i am a newbie in or32. i just compiled my or32-elf-gcc on my fedora 3 pc
>> as this tutoria http://www.asisi.co.uk/or1kecos_0_5.htmll. when i
>> compile my hello program, showed error message as below:
>> ...ld: can't open crt0.o
>>
>> maybe this question had been discussed for hundred times. i had see
>> the archives  very carefully but still cannot resolve the problem. is 
>> that
>> because my OS is fedora 3? must i use SuSE Linux 7.2? couled anyone
>> hlep me? very thanx

I annonced on the list the aviability of third party toolchain in rpm format 
for fedora 4,
but a slight src.rpm [which is very easy]recompile will help to make it for 
fedora 3,2,1.

http://openrisc.rdsor.ro/ToolChain

I work in progress for gdb/newlib.

>> _______________________________________________
>> http://www.opencores.org/mailman/listinfo/openrisc
>
> 'crt0.o' is the default startup file that gets used by 'ld'.  If you're 
> using
> the 'or32-elf' target, you have to write your own startup routine. 
> There's some
> info near the end of 'or1k/or1ksim/README.gdb' that should get you 
> started.
>
> What you have to do is pass the '-nostartfiles' option to gcc so that it 
> doesn't
> try to link to 'crt0.o'.  In your case, since you seem to be using eCos, 
> there
> is already a startup routine provided in
> 'or1k/ecos-2.0/packages/hal/openrisc/arch/current/src/vectors.S'.
>
> As a minimum, you need to make sure you put something useful in 0x100 
> which is
> the reset vector.  In general, you would want the 'reset' routine to 
> perform
> some initializations and then jump to your program 'main'.
>
> I did a quick search on google and found a useful link that details how 
> the
> linker works:
> http://docs.hp.com/en/B2355-90655/ch02s05.html
>
> Hope this helps,
> Stephan
>
>
> _______________________________________________
> http://www.opencores.org/mailman/listinfo/openrisc
>
> 