[ulib][musl] Add cfi directives for cortex-strings

This commit adds CFI directives for the cortex-strings functions in the
libc, so unwinders can unwind through them.

The change just adds .cfi_startproc and .cfi_endproc on each function.
The functions don't touch the stack, so those are the only two
directives needed.

Change-Id: I8fdd75c085d818db4ed9b0b5780635aec1b4cf66
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/559662
Reviewed-by: Roland McGrath <mcgrathr@google.com>
Commit-Queue: Marco Vanotti <mvanotti@google.com>
12 files changed
tree: 6b378a78833738605552811f30fef764049f1705
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. products/
  9. scripts/
  10. sdk/
  11. src/
  12. third_party/
  13. tools/
  14. zircon/
  15. .clang-format
  16. .clang-tidy
  17. .git-blame-ignore-revs
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .style.yapf
  22. AUTHORS
  23. BUILD.gn
  24. CODE_OF_CONDUCT.md
  25. CONTRIBUTING.md
  26. LICENSE
  27. OWNERS
  28. PATENTS
  29. README.md
  30. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

Read more about Fuchsia's principles.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.