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Core: Implement a Host Timer.

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This commit is contained in:
Fernando Sahmkow 2020-02-05 19:12:27 -04:00
parent a1e7931d20
commit e99a10917e
5 changed files with 295 additions and 0 deletions
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5
src/core/core_timing_util.cpp
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@ -49,6 +49,11 @@ s64 nsToCycles(std::chrono::nanoseconds ns) {
return (Hardware::BASE_CLOCK_RATE * ns.count()) / 1000000000;
}
u64 nsToClockCycles(std::chrono::nanoseconds ns) {
const u128 temporal = Common::Multiply64Into128(ns.count(), CNTFREQ);
return Common::Divide128On32(temporal, 1000000000).first;
}
u64 CpuCyclesToClockCycles(u64 ticks) {
const u128 temporal = Common::Multiply64Into128(ticks, Hardware::CNTFREQ);
return Common::Divide128On32(temporal, static_cast<u32>(Hardware::BASE_CLOCK_RATE)).first;