Cortex-A9 CPSR I Flag unmask problem

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  • Note: This was originally posted on 19th July 2012 at http://forums.arm.com

    Human Error! I didnt read carefully and thought flag = 1 = interrupt enabled.

    This is exactly what happened:
    Quote by ttfn:
    Best guess... the "CPSIE i" succeeds and an IRQ is immediately taken.   The IRQ handler triggers an Abort - hence ending up in abort mode.


    Thanks alot!
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  • Note: This was originally posted on 19th July 2012 at http://forums.arm.com

    Human Error! I didnt read carefully and thought flag = 1 = interrupt enabled.

    This is exactly what happened:
    Quote by ttfn:
    Best guess... the "CPSIE i" succeeds and an IRQ is immediately taken.   The IRQ handler triggers an Abort - hence ending up in abort mode.


    Thanks alot!
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