[Bug target/77882] [Aarch64] Add 'naked' function attribute

[e2lahav at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77882

Elad Lahav <e2lahav at gmail dot com> changed:

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--- Comment #4 from Elad Lahav <e2lahav at gmail dot com> ---
Created attachment 47119
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47119&action=edit
Proposed implementation of naked functions for aarch64

The change is quite simple (see the proposed patch). I hope it can be made, as
I find naked functions quite useful, especially by allowing the use of certain
C features in otherwise pure assembly code (e.g., offsetof, _Static_assert).
Aesthetically, naked functions provide proper prototypes that are easier to
follow, document and test.