Hello Zhenqiang, Same problem exists even with the toolchain version you mentioned gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
As I got pre-built toolchain, host machine's gcc version should not have any effect on this behaviour, am I correct? Regards, Parimala On Fri, Dec 20, 2013 at 11:11 AM, Zhenqiang Chen <zhenqiang.c...@linaro.org>wrote: > 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 <baggiriparim...@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....@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:baggiriparim...@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.c...@linaro.org> wrote: > >> > >> On 19 December 2013 13:36, Parimala Baggiri <baggiriparim...@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 > >> > > >> > >> > >> > >> > >> -- IMPORTANT NOTICE: The contents of this email and any attachments are > >> confidential and may also be privileged. If you are not the intended > >> recipient, please notify the sender immediately and do not disclose the > >> contents to any other person, use it for any purpose, or store or copy > the > >> information in any medium. Thank you. > >> > >> ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, > >> Registered in England & Wales, Company No: 2557590 > >> ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 > 9NJ, > >> Registered in England & Wales, Company No: 2548782 > > > > >
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