Re: A bug about system call on ARM

From: Will Deacon
Date: Mon Jun 03 2013 - 05:55:46 EST

On Mon, Jun 03, 2013 at 06:25:26AM +0100, Wang, Yalin wrote:
> Hi Will,
> I have a question about this patch .
> If the user space is thumb mode,
> The PC should be rewind by 2 bytes,
> So the fix_up code should be
> Sub lr, lr, #2 .
> Am I right ?

No, because we don't have OABI-compat support for Thumb applications and
force everything down the EABI path instead.

Did you manage to test the patch?

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