Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Thanks again for the feedback. I have documented this issue in the ELDK FAQ section: http://www.denx.de/wiki/view/ELDK-5/QuestionsAndAnswers#GCC_generates_illegal_opcodes_fo Yes. When using USE_PRIVATE_LIBGCC=yes make my_board_name. It works well. And the kernel works fine too because linux kernel has private libgcc code too. But when I examine the *.so files in eldk5.0, Almost all of them has 'clz' opcode. So if I use them in my aplication like busybox. It will crash. So I think the best way is to rebuild eldk5.0 for armv4. Did you tell me how to configure eldk5.0 to build for armv4. And why eldk5.0 hasn't a release for armv4, Is armv4 too old and has no value to support it? -- Best Regards, zzs ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Le 15/07/2011 20:00, Wolfgang Denk a écrit : Dear zzs, In message20110715161531.ga5...@greatfirst.com you wrote: Today I found the wrong code : Thanks again for the feedback. I have documented this issue in the ELDK FAQ section: http://www.denx.de/wiki/view/ELDK-5/QuestionsAndAnswers#GCC_generates_illegal_opcodes_fo Best regards, Wolfgang Denk This would not happen for AT91 only, would it? Maybe the FAQ should mention other arches / SoC families that might be hurt by the issue. Amicalement, -- Albert. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Dear zzs213, Am 16.07.2011 um 10:05 schrieb zzs: But when I examine the *.so files in eldk5.0, Almost all of them has 'clz' opcode. So if I use them in my aplication like busybox. It will crash. you could just build your libc for target rootfs with -march=armv4. So I think the best way is to rebuild eldk5.0 for armv4. That is another solution. Then you could use the libc from your toolchain for your rootfs, but I recomend to build your own in any way. regards Andreas Bießmann ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Dear zzs, In message 20110716080555.ga17...@greatfirst.com you wrote: So I think the best way is to rebuild eldk5.0 for armv4. Did you tell me how to configure eldk5.0 to build for armv4. And why eldk5.0 hasn't a release for armv4, Is armv4 too old and has no value to support it? This is actually off topic here. Please let's take this discussion to the ELDK mailing list instead. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de If I ever needed a brain transplant, I'd choose a teenager's because I'd want a brain that had never been used. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Dear Albert ARIBAUD, In message 4e214769.3060...@aribaud.net you wrote: http://www.denx.de/wiki/view/ELDK-5/QuestionsAndAnswers#GCC_generates_illegal_opcodes_fo ... This would not happen for AT91 only, would it? Maybe the FAQ should mention other arches / SoC families that might be hurt by the issue. It mentions that the problem comes from using a tool chain that is configured for the ARMv5TE architecture for a processor that belongs to another, less capable architecture (ARMv4T). You always have to expect problems when using a tool chain that is set up to support another architecture than the one you have. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de It seems intuitively obvious to me, which means that it might be wrong. -- Chris Torek ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Dear zzs, In message 20110715161531.ga5...@greatfirst.com you wrote: Today I found the wrong code : Very well - thanks. and the __udivsi3 contain the wrong code : 20111cfc __udivsi3: 20111cfc: e2512001subsr2, r1, #1 ; 0x1 20111d00: 012fff1ebxeqlr 20111d04: 3a23bcc 20111d98 __udivsi3+0x9c 20111d08: e151cmp r0, r1 20111d0c: 9a1abls 20111d7c __udivsi3+0x80 20111d10: e1110002tst r1, r2 20111d14: 0a1bbeq 20111d88 __udivsi3+0x8c 20111d18: e16f3f11clz r3, r1 # ***this is the wrong code 20111d1c: e16f2f10clz r2, r0 20111d20: e0432002sub r2, r3, r2 ... Architectures This instruction is available in ARM architecture versions 5 and above. But at91rm9200 is armv4. This is to be expected. It comes from using the GCC library routines from ELDK, which are configured for an ARMv5TE architecture. Does this mean I can't use eldk5.0 for at91rm9200 ? If yes, How can I You can use it, but you must make sure to rebuild the needed GCC library routines as needed for your target. See the USE_PRIVATE_LIBGCC make option, i. e. use: USE_PRIVATE_LIBGCC=yes make ... Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de One of the advantages of being a captain is being able to ask for ad- vice without necessarily having to take it. -- Kirk, Dagger of the Mind, stardate 2715.2 ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] eldk5.0 generate illegal instruction for at91rm9200
Dear zzs, In message 20110715161531.ga5...@greatfirst.com you wrote: Today I found the wrong code : Thanks again for the feedback. I have documented this issue in the ELDK FAQ section: http://www.denx.de/wiki/view/ELDK-5/QuestionsAndAnswers#GCC_generates_illegal_opcodes_fo Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de In my experience the best way to get something done is to give it to someone who is busy. - Terry Pratchett, _Going_Postal_ ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
