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Is pre-compiled ARM9 libs able to run on an ARM11 chip

Ping Ping Cheng
Note: This was originally posted on 15th October 2008 at http://forums.arm.com

Hi

I have couple pre-compiled libs in ARM9, is there a problem if link it with other ARM11 code and put on an ARM11 chip?

Thanks,
-ppj
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    Note: This was originally posted on 15th October 2008 at http://forums.arm.com

    I have couple pre-compiled libs in ARM9, is there a problem if link it with other ARM11 code and put on an ARM11 chip?


    Assuming this is some general application library, there should be no problem linking and running It in an ARM11 image. 

    There will probably be problems if the code contains anything specific for a chip (e.g. accessing CP14/15 registers not present in ARM11 maybe?)

    Also be aware that the code was built and scheduled for an ARM9 which may not necessarily be the best for an ARM11, so you may get better performance by rebuilding it for ARM11.
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  • 0
    Note: This was originally posted on 15th October 2008 at http://forums.arm.com

    I have couple pre-compiled libs in ARM9, is there a problem if link it with other ARM11 code and put on an ARM11 chip?


    Assuming this is some general application library, there should be no problem linking and running It in an ARM11 image. 

    There will probably be problems if the code contains anything specific for a chip (e.g. accessing CP14/15 registers not present in ARM11 maybe?)

    Also be aware that the code was built and scheduled for an ARM9 which may not necessarily be the best for an ARM11, so you may get better performance by rebuilding it for ARM11.
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