cpu: don't read ARM64 registers on Android

It seems like on Android we're not allowed in all cases to read the
registers ISAR0, ISAR1 and PFR0 to detect CPU features.

Fixes golang/go#36622

Change-Id: I577bd928a5a4dcd6e908cf059faa15fc0c80e3e5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/215237
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed
tree: 40d43083bf2c5fda8c1665777f2c51950fbaafa9
  1. cpu/
  2. plan9/
  3. unix/
  4. windows/
  5. .gitattributes
  6. .gitignore
  7. AUTHORS
  8. codereview.cfg
  9. CONTRIBUTING.md
  10. CONTRIBUTORS
  11. go.mod
  12. LICENSE
  13. PATENTS
  14. README.md
README.md

sys

This repository holds supplemental Go packages for low-level interactions with the operating system.

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