One more register constaint needed to be added to the cortex-m0 atomic
inline assembly. Vincent fixed all the others. The requirement for
ARMv6-m includes that the target load register be one of the low
registers as well.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Change-Id: Ie44e824cafcc9b862ade664e3016cc34886cdf6e
Reviewed-on: https://chromium-review.googlesource.com/292435
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
The atomic_* functions are often used in contexts where the data they
will operate on are volatile (due to being shared between tasks or a
task and an interrupt handler). Adding volatile here makes using the
atomic_* functions a little easier in those cases and removes a cast
from the call sites (which could be obscuring a bug, if for instance
the variable was modified to be a uint16_t).
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Change-Id: I71356eb3cf2c0506df38532eee767c7d78f9240e
Reviewed-on: https://chromium-review.googlesource.com/287516
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
Add CONFIG_LTO to use GCC Link-Time Optimizations to try to reduce the
flash footprint of the firmware.
Add additional protection to some functions/data to avoid removal by the
linker when their usage is not obvious.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=make buildall (with and without LTO enable on all boards)
Change-Id: I586b8c1eda4592b416c85383b65153c1d5ab0059
Reviewed-on: https://chromium-review.googlesource.com/271291
Trybot-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
