31 lines
702 B
C++
31 lines
702 B
C++
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/***
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Copyright (C) 2024 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: Clocks.aarch64.cpp
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Date: 2024-01-02
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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AUKN_SYM AuUInt64 ArmQueryClockCounter()
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{
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AuUInt64 uValue {};
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#if defined(AURORA_COMPILER_MSVC)
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uValue = _ReadStatusReg(CNTVCT_EL0);
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#else
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asm volatile ("mrs %0, CNTVCT_EL0; isb; " : "=r" (uValue));
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#endif
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return uValue;
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}
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AUKN_SYM AuUInt64 ArmQueryClockFrequency()
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{
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AuUInt64 uClockFreq {};
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#if defined(defined(AURORA_COMPILER_MSVC))
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uClockFreq = _ReadStatusReg(CNTFRQ_EL0);
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#else
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asm volatile ("mrs %0, CNTFRQ_EL0; isb; " : "=r" (uClockFreq));
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#endif
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return uClockFreq;
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}
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