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[ loading the pc register ]

texane texane
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  • Note: This was originally posted on 15th July 2009 at http://forums.arm.com

    Actually, pc is correctly loaded, and I guess there is
    a problem with my copy, but I dont see which one.
    main is a naked function and has no local variable,
    so it doesnot use the stack at all...
    When I replace the first sub to compute the size with
    a harcoded one (ie. mov r2, #0x1000), it works...


    Hmm... Since you mention a hardcoded value works, and decrement by 4, I wonder if the size is actually not a multiple of 4 when working it out?  It looks like the code might loop if it wasn't.
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  • Note: This was originally posted on 15th July 2009 at http://forums.arm.com

    Actually, pc is correctly loaded, and I guess there is
    a problem with my copy, but I dont see which one.
    main is a naked function and has no local variable,
    so it doesnot use the stack at all...
    When I replace the first sub to compute the size with
    a harcoded one (ie. mov r2, #0x1000), it works...


    Hmm... Since you mention a hardcoded value works, and decrement by 4, I wonder if the size is actually not a multiple of 4 when working it out?  It looks like the code might loop if it wasn't.
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