Re: Fwd: Re: [XenARM] Problem with entry.S, error on instruction 'eors'

[류재민 <jm77.ryu@xxxxxxxxxxx>]

Hi,

 

That is a syntax error. So, the code should be changed as following.

 

>>> ldr    r12, [r8, #4]
>>> eors   r12, r12, #PSR_MODE_SVC
>>> beq    invoke_hypercall

 

------- Original Message -------
Sender : Shreyansh Jain
Date   : 2011-06-06 15:22 (GMT+09:00)
Title  : Re: [XenARM] Problem with entry.S, error on instruction 'eors'
To     : Li Haifeng  
Cc     : xen-arm@xxxxxxxxxxxxxxxxxxx  

Hi,

Thanks a lot for the link - will try with this tool-chain as well.

-
Shreyansh Jain

On Sat, Jun 4, 2011 at 7:18 PM, Li Haifeng wrote:
> Hi, it works well with the cross-chain gcc 4.1.1.
>
> http://arm.cirrus.com/files/tools/arm-linux-gcc-4.1.1-920t.tar.bz2
>
> On Wed, Jun 1, 2011 at 6:06 PM, Shreyansh Jain
> wrote:
>>
>> Hi List,
>>
>> I recently started working/exploring the XEN on ARM Project. As an
>> initial step I tried to compile the source code of xen-arm (extracted
>> from
>> [http://wiki.xen.org/xenwiki/XenARM?action="">>> For this purpose, I have used the gcc-arm (3.4.4) cross-compiler as
>> suggested by the
>>
>> [http://wiki.xen.org/xenwiki/XenARM?action="">>> document.
>>
>> Following was the error which I observed:
>>
>> ---8<---
>> ...
>> traps.c: In function `fixup_exception':
>> traps.c:56: warning: assignment makes pointer from integer without a cast
>> entry.S: Assembler messages:
>> entry.S:368: Error: register expected, not '#0x00000013' -- `eors
>> r12,#0x00000013'
>> make[4]: *** [entry.o] Error 1
>> ...
>> ---8<---
>>
>> I changed the compiler by downloading a gcc-arm version 3.4.3 and the
>> error persisted. On further searching (Google), I noticed that the
>> usage of the assembly instruction in entry.S:
>>
>> ---8<---
>> ...
>> 367 ? ? ? ? ldr ? ? r12, [r8, #4]
>> 368 ? ? ? ? eors ? ?r12, #PSR_MODE_SVC ? <=====
>> 369 ? ? ? ? beq ? ? invoke_hypercall
>> ...
>> ---8<---
>>
>> is not as expected by the linker (ld). It expects taht the first and
>> second argument of the code be a register. I have repeatedly checked
>> that I am working on the exact source code as extracted from the
>> xen-arm source downloaded from the xen-arm wiki.
>>
>> Is this a known issue or is it something which I am observing due to
>> some possible configuration issue at my end. Any pointers/hints would
>> be sincerely appreciated. Do mail across in case any further
>> information is required.
>>
>> Thank you.
>>
>> -
>> Shreyansh Jain
>>
>> _______________________________________________
>> Xen-arm mailing list
>> Xen-arm@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/mailman/listinfo/xen-arm
>
>
>
> --
> Li Haifeng
> Laboratory of Service Computing Technology and System
> Home page:http://tek-life.org
>
>

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Jaemin Ryu    S/W Platform Lab  DMC Research Center  Samsung Electronics Co., Ltd.  TEL : +82-31-280-9747  MOBILE: +82-10-3324-1898  E-mail : jm77.ryu@xxxxxxxxxxx

 

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