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Re: b[l]x instruction in cortex-m3 code
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On Mon, Jul 18, 2011 at 5:49 PM, Daniel Otte <firstname.lastname@example.org> wrote:
> That was also my first thought, but it happens also with calls in the same file.
No, this is something else.
> ?1d2: ? f240 13b1 ? ? ? movw ? ?r3, #433 ? ? ? ?; 0x1b1
> ?1d6: ? f2c0 0300 ? ? ? movt ? ?r3, #0
Notice the low bit set here.
> ?1e2: ? 4798 ? ? ? ? ? ?blx ? ? r3
Both bx reg and blx reg use mode based on the reg's low bit; they are
perfectly fine on Cortex-M. But if you give them an invalid argument,