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Øyvind Rønningstad a2cfb8431d arch: arm: Add code for swapping threads between secure and non-secure
This adds code to swap_helper.S which does special handling of LR when
the interrupt came from secure. The LR value is stored to memory, and
put back into LR when swapping back to the relevant thread.

Also, add special handling of FP state when switching from secure to
non-secure, since we don't know whether the original non-secure thread
(which called a secure service) was using FP registers, so we always
store them, just in case.

Signed-off-by: Øyvind Rønningstad <oyvind.ronningstad@nordicsemi.no>
2021-05-05 13:00:31 +02:00
.buildkite ci: Cleanup files on exit 2021-04-21 08:53:26 -04:00
.github doc: west: add 0.11.0 docs 2021-05-04 15:29:36 -05:00
arch arch: arm: Add code for swapping threads between secure and non-secure 2021-05-05 13:00:31 +02:00
boards boards: thingy53_nrf5340: Add brief doc 2021-05-05 12:42:01 +02:00
cmake cmake: use WEST_PYTHON as a preferred python installation if defined. 2021-04-27 13:31:23 -04:00
doc doc: fix devicetree lexer warnings 2021-05-04 22:42:15 -04:00
drivers drivers/flash: stm32h7: Fixed range validation 2021-05-05 11:00:20 +02:00
dts dts/arm/st: h7: Fix pll2 reg address 2021-05-04 13:57:41 -05:00
include arch: arm: Add code for swapping threads between secure and non-secure 2021-05-05 13:00:31 +02:00
kernel smp: move a preprocessor conditional from .c to cmake 2021-05-03 17:13:01 -04:00
lib p4wq: add support for per-CPU, per-queue and delayed threads 2021-05-03 17:13:01 -04:00
misc toolchain: add GEN_ABSOLUTE_SYM_KCONFIG() 2021-02-02 09:23:45 -05:00
modules modules: add tensorflow 2021-04-29 08:35:57 -04:00
samples samples: sensor: Align bmm150 sensor name 2021-05-05 12:42:01 +02:00
scripts doc: use pygments devicetree language support 2021-05-04 22:42:15 -04:00
share cmake: using MD5_INFILE variable instead of ZephyrPackagePath.txt 2021-02-23 19:34:27 +01:00
soc xtensa: cavs_v18: use uncached addresses to support SMP 2021-05-04 22:40:59 -04:00
subsys modbus: fix untrusted loop bound in modbus client 2021-05-05 11:33:56 +02:00
tests arch: arm: Add code for swapping threads between secure and non-secure 2021-05-05 13:00:31 +02:00
.checkpatch.conf checkpatch: ignore linux specific ENOSYS warning 2021-03-30 10:50:14 -05:00
.clang-format
.codecov.yml
.editorconfig
.gitattributes
.gitignore gitignore: add common Python venv directories 2021-04-20 11:30:40 -05:00
.gitlint
.mailmap
.uncrustify.cfg
CMakeLists.txt logging: add support for dictionary based logging 2021-04-28 22:25:42 +02:00
CODE_OF_CONDUCT.md
CODEOWNERS codeowners: add code owner for blackpill_f401ce, blackpill_f411ce 2021-04-30 12:40:24 -05:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr Kconfig: Add a new config CODE_DATA_RELOCATION_SRAM 2021-05-04 15:46:52 +02:00
LICENSE
MAINTAINERS.yml MAINTAINERS.yml: add me as docs collaborator 2021-04-28 08:59:08 +02:00
README.rst doc: remove references to shippable 2021-03-04 07:14:11 -06:00
VERSION release: Update patch level to 99 after the 2.5.0 release 2021-02-14 11:52:38 -05:00
version.h.in
west.yml west.yml: Update openamp for v2021.04 release 2021-05-05 12:26:33 +02:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/images/Zephyr-Project.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a href="https://buildkite.com/zephyr/zephyr">
   <img
   src="https://badge.buildkite.com/f5bd0dc88306cee17c9b38e78d11bb74a6291e3f40e7d13f31.svg?branch=master"></a>


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM Cortex-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

.. below included in doc/introduction/introduction.rst

.. start_include_here

Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

Community Support
*****************

Community support is provided via mailing lists and Slack; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI
  (buildkite) nightly build results.
* **Chat**: Zephyr's Slack workspace is https://zephyrproject.slack.com.  Use
  this `Slack Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Slack Invite: https://tinyurl.com/y5glwylp
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/guides/getting-help.html