Robert O'Callahan robert at
Mon Nov 24 21:34:53 PST 2014

On Tue, Nov 25, 2014 at 1:10 PM, Kyle Huey <me at> wrote:

> - The kernel clobbers r[12] when calling PTRACE_GETREGS.  It's unclear
> if this is going to be a problem in practice.  If it is we can patch
> the kernel, and roc has suggested a workaround too.

If ARM has PTRACE_POKEUSER we might be able to use that to set one register
at a time, to work around the fact that we don't know the value of r12.

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