Parimala,

Can you try linaro toolchain?
Please find gcc-linaro-arm-none-eabi-4.8-2013.11* at
http://releases.linaro.org/13.11/components/toolchain/binaries/

Thanks!
-Zhenqiang

On 20 December 2013 13:36, Parimala Baggiri <baggiriparimala@gmail.com> wrote:
> Hello Terry,
>
> U-boot is in thumb mode and the THUMB mode application generates "undefined
> instruction" exception.
> U-boot is in thumb mode and an ARM mode application is running fine in this
> environment.
>
> Thank you.
>
> Regards,
> Parimala
>
>
> On Fri, Dec 20, 2013 at 10:40 AM, Terry Guo <Terry.Guo@arm.com> wrote:
>>
>> My understanding is that your u-boot is built in THUMB mode and also run
>> in THUMB mode now, but your helloworld application is still ARM code. Then
>> under thumb mode u-boot, you issue command “go 82000000 hello” to run an ARM
>> application. Is my understanding correct?
>>
>>
>>
>> If correct, my gut feeling is it might be a problem related to ARM/Thumb
>> mode switch.
>>
>>
>>
>> BR,
>>
>> Terry
>>
>>
>>
>> From: Parimala Baggiri [mailto:baggiriparimala@gmail.com]
>> Sent: Friday, December 20, 2013 12:25 PM
>> To: Zhenqiang Chen
>> Cc: linaro-toolchain; Terry Guo
>> Subject: Re: ARM vs THUMB builds
>>
>>
>>
>> When I build hello_world application along with u-boot for ARM mode, it
>> executes fine on target, But, when I build it for THUMB mode, it generates
>> "undefined instruction" exception.
>>
>> Thank you.
>>
>>
>>
>>
>>
>> On Fri, Dec 20, 2013 at 8:38 AM, Zhenqiang Chen
>> <zhenqiang.chen@linaro.org> wrote:
>>
>> On 19 December 2013 13:36, Parimala Baggiri <baggiriparimala@gmail.com>
>> wrote:
>> > Hello,
>> >
>> > I am using the pre-built toolchain gcc-arm-none-eabi-4_6-2012q2 from
>> > linaro
>> > to compile u-boot (u-boot-linaro-stable) and to compile my standalone
>> > applications to run on target(PandaBoard ES rev b2)
>> >
>> > hello_world standalone application which comes with u-boot is executing
>> > fine
>> > on target when I disable CONFIG_SYS_THUMB_BUILD, but when I enable it,
>> > target gets reset with following information
>>
>> How do you build your hello_world? Is it ARM or THUMB?
>>
>>
>> > Panda # go 82000000 hello
>> > ## Starting application at 0x82000000 ...
>> > undefined instruction
>> > pc : [<8200000c>]          lr : [<bff83147>]
>> > sp : bfeffe40  ip : bfeffc10     fp : 00000000
>> > r10: 00000003  r9 : bffac954     r8 : bfefff68
>> > r7 : bff01d88  r6 : 82000000     r5 : bff01d8c  r4 : 00000003
>> > r3 : 82000000  r2 : bff01d8c     r1 : bff01d8c  r0 : 00000002
>> > Flags: nzCv  IRQs off  FIQs off  Mode SVC_32
>> > Resetting CPU ...
>> >
>> > resetting ...
>> >
>> > U-Boot SPL 2013.01.-rc1-g0f45941 (Dec 17 2013 - 14:23:41)
>> > OMAP4460 ES1.1
>> > OMAP SD/MMC: 0
>> > reading u-boot.img
>> > reading u-boot.bin
>> > reading u-boot.bin
>> >
>> > ......
>> >
>> > Can anyone please help me why thumb mode build is failing?
>> >
>> >
>> >
>>
>> > _______________________________________________
>> > linaro-toolchain mailing list
>> > linaro-toolchain@lists.linaro.org
>> > http://lists.linaro.org/mailman/listinfo/linaro-toolchain
>> >
>>
>>
>>
>>
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