[roll] Roll fuchsia [kernel][arm64] arm64 usercopy variant

This introduced a slight rewrite of usercopy.
The primary goal is to enable switching to ldr/stt instructions.

This CL also introduces arm64_user_copy_test GN template, for
adding a test of a variant, based on the loop unrolling that was
originally done for memcpy.

The next steps involve allowing to align either src or dst on the
loop prologue.

The kernel implementation has not changed at this point.

Original-Bug: 59284
Test: fx test -v -o arm64-user-copy-tests
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/693863
Original-Revision: 38e9ee210f9c9243e930f67abe59e85987260e52
GitOrigin-RevId: 542df9a21adbd55d7118b03203342d6086b3b191
Change-Id: Ic98d7ce0c6d79487c106fe0845d34347ccbe679c
1 file changed
tree: 49ad7549dfcebc889aac8ff7132022d60f33128e
  1. infra/
  2. third_party/
  3. cts
  4. firmware
  5. flower
  6. jiri.lock
  7. minimal
  8. prebuilts
  9. README.md
  10. stem
  11. test_durations
  12. 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 via the IRC channel #fuchsia on Freenode.

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.