Arm Development Studio forum Self Modifying Code on the ARM1176JZF-S (raspberry pi)

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Self Modifying Code on the ARM1176JZF-S (raspberry pi)

Note: This was originally posted on 6th April 2013 at http://forums.arm.com

Hello
I'm trying to write some Self modifying code (SMC) to run on my raspberry pi and I've been reading a few things and am slightly confused.

[size=2]From what I understand, ARMv6-M is thumb2 only (i.e. always in thumb mode) So if I want to write SMC, it has to be in thumb 2? (despite the 1176JZF-S? being able to run both arm and thumb?)
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[size=2]Should I use MCRR (and stay in the assembly) or linux's mmap/mprotect/__cache__clear (in the OS) for cache coherence?

Currently, I just keep getting segmentation faults on my code

Best
Sally[/size]