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X86Emitter: Use __rdtsc define on non-msvc compilers

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Ty Lamontagne 2021-07-24 13:12:22 -04:00 committed by Kojin
parent 87ee413141
commit f1b4bee88f
1 changed files with 1 additions and 22 deletions
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23
common/src/x86emitter/cpudetect.cpp
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@ -1,5 +1,5 @@
/* Cpudetection lib
* Copyright (C) 2002-2010 PCSX2 Dev Team
* Copyright (C) 2002-2021 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
@ -112,35 +112,14 @@ s64 x86capabilities::_CPUSpeedHz(u64 time) const
// Align the cpu execution to a cpuTick boundary.
// GCC 4.8 has __rdtsc but apparently it causes a crash. Only known working on MSVC
do {
timeStart = GetCPUTicks();
#ifdef _MSC_VER
startCycle = __rdtsc();
#elif defined(_M_X86_64)
unsigned long long low, high;
__asm__ __volatile__("rdtsc"
: "=a"(low), "=d"(high));
startCycle = low | (high << 32);
#else
__asm__ __volatile__("rdtsc"
: "=A"(startCycle));
#endif
} while (GetCPUTicks() == timeStart);
do {
timeStop = GetCPUTicks();
#ifdef _MSC_VER
endCycle = __rdtsc();
#elif defined(_M_X86_64)
unsigned long long low, high;
__asm__ __volatile__("rdtsc"
: "=a"(low), "=d"(high));
endCycle = low | (high << 32);
#else
__asm__ __volatile__("rdtsc"
: "=A"(endCycle));
#endif
} while ((timeStop - timeStart) < time);
s64 cycleCount = endCycle - startCycle;