[roll] Roll fuchsia [zircon] support for aarch64/aarch32 restricted mode

This changes enables restricted mode on arm64 to run 32-bit restricted
tasks. The vbar is extended to handle exceptions from aarch32 el0 and
enforces that those exceptions only occur in restricted mode threads.

Access to aarch32 is provided by expanding the CPSR to enable the
aarch32 mode, thumb, GE, Q, and IT bits when set by the restricted
state and enables debuggers to see these values (but not set them).

Testing is included via utest/core/restricted-mode through the
addition of a derived register state. A check for support
is also added for non-DUT architectures to ensure aarch32 is
supported before testing.

Original-Bug: 372499348
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1124113
Original-Revision: ff318e729018ee1f8c9d6d4b2d55930c39705e2d
GitOrigin-RevId: 5cf85466a43998dade2ba4db3ba52e971be082c6
Change-Id: I6662d20c8ede1e3471d1c4073603800529de0f9e
1 file changed
tree: d057bfbacdff64abde6ffe93d83b632639c15b83
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cts
  6. firmware
  7. flower
  8. jiri.lock
  9. MILESTONE
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
  15. toolchain
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.