bb/aarch64: Implement initial specialized operations.

[briansmith]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.58%. Comparing base (f941fa4) to head (5f8fc9e).
Report is 40 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2577      +/-   ##
==========================================
+ Coverage   96.57%   96.58%   +0.01%     
==========================================
  Files         185      186       +1     
  Lines       19855    19880      +25     
  Branches      510      510              
==========================================
+ Hits        19175    19202      +27     
+ Misses        571      568       -3     
- Partials      109      110       +1     

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