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3 Commits

Author SHA1 Message Date
Martin Storsjö
ee040a7fc2 arm/aarch64: Use mach_absolute_time as timer on apple platforms 
This is much less precise than the cycle counter register, but
the cycle counter register is not available on apple platforms
(and on linux, it requires a kernel module for allowing user mode
access).

Signed-off-by: Martin Storsjö <martin@martin.st>
 2021-02-21 22:41:34 +02:00
Hendrik Leppkes
af2e6f3215 Merge commit '64034849dad8410bedbe1def4c533490fb85cc4a' 
* commit '64034849dad8410bedbe1def4c533490fb85cc4a':
  arm64: add cycle counter support

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
 2016-01-02 10:26:42 +01:00
Janne Grunau
64034849da arm64: add cycle counter support 
The ISB (instruction synchronization barrier) might be too heavy for
START/STOPTIMER use but should be more accurate in checkasm where the
timing overhead is subtracted.
 2015-12-14 16:42:35 +01:00