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This code reads the Time Base Register on POWER architecture. Time Base Register requires reading high 32 bits first, then the low 32 bits. Then we read upper 32 bits to check whether it's changed. If it is, we need to reread both values.
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This code reads the Time Base Register on POWER architecture.
Time Base Register requires reading high 32 bits first, then the low 32 bits. Then we read upper 32 bits to check whether it's changed. If it is, we need to reread both values.