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

[Shreyansh Jain <shrey.linux@xxxxxxxxx>]

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 <omycle@xxxxxxxxx> 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 <shrey.linux@xxxxxxxxx>
> 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=AttachFile&do=get&target=xen-arm-opensource.tar.bz2]).
>> 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=AttachFile&do=get&target=Secure_Xen_on_ARM_User_Guide_v1_1.pdf]
>> 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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