Re: [PATCH, GCC/ARM] Use bitmap to control cmse_nonsecure_call register clearing

[Kyrill Tkachov]

Hi Thomas,

On 15/11/17 17:08, Thomas Preudhomme wrote:

Hi,

As part of r253256, cmse_nonsecure_entry_clear_before_return has been
rewritten to use auto_sbitmap instead of an integer bitfield to control
which register needs to be cleared. This commit continue this work in
cmse_nonsecure_call_clear_caller_saved.

ChangeLog entry is as follows:

*** gcc/ChangeLog ***

2017-10-16  Thomas Preud'homme <thomas.preudho...@arm.com>

        * config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Use

auto_sbitap instead of integer bitfield to control register needing

        clearing.

Testing: bootstrapped on arm-linux-gnueabihf and no regression in the
testsuite.

Is this ok for trunk?

Ok for trunk.
Thanks for this conversion. It's much easier to understand the code
without having to think about the bitmasks and shifts.

Kyrill

Best regards,

Thomas