Consolidate the Timebase register usage

libnxz / power-gzip

POWER NX zlib compliant library

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Closed tuliom closed 3 years ago

tuliom commented 3 years ago

Remove macro NXTIMER.
Remove unused dbgtimer.
Replace all different functions with nx_get_time(), nx_get_freq() and nx_time_diff().
Properly document these functions.
Rewrite nx_get_freq() in order to cache the frequency information because reads of the Timebase register frequency are not fast.

This commit is intentionally leaving the selftest directory unchanged.

tuliom commented 3 years ago

Rewrite nx_get_freq() in order to cache the frequency information because reads of the Timebase register frequency are not fast.

I should have mentioned this change saves around 3-5% of cpu cycles.