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frame cpu pause refactoring.

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expanding to powerpc archs also for visual studio/MSVC while
keeping clang support for windows.
This commit is contained in:
David Carlier 2022-04-24 11:15:50 +01:00
parent 4db6534ab3
commit df86c15395
1 changed files with 20 additions and 5 deletions
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25
src/common/frame.c
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@ -81,6 +81,25 @@ char userGivenGame[MAX_QPATH];
// Hack for the signal handlers.
qboolean quitnextframe;
static inline void Sys_CpuPause(void)
{
#if defined(__GNUC__)
#if (__i386 || __x86_64__)
asm volatile("pause");
#elif defined(__aarch64__) || (defined(__ARM_ARCH) && __ARM_ARCH >= 7) || defined(__ARM_ARCH_6K__)
asm volatile("yield");
#elif defined(__powerpc__) || defined(__powerpc64__)
asm volatile("or 27,27,27");
#endif
#elif defined(_MSC_VER)
#if defined(_M_IX86) || defined(_M_X64)
_mm_pause();
#elif defined(_M_ARM) || defined(_M_ARM64)
__yield();
#endif
#endif
}
static void Qcommon_Frame(int usec);
// ----
@ -156,11 +175,7 @@ Qcommon_Mainloop(void)
enough to reduce power consumption and head
dispersion a lot, it's 95°C against 67°C on
a Kaby Lake laptop. */
#if defined (__GNUC__) && (__i386 || __x86_64__)
asm("pause");
#elif defined(__aarch64__) || (defined(__ARM_ARCH) && __ARM_ARCH >= 7) || defined(__ARM_ARCH_6K__)
asm("yield");
#endif
Sys_CpuPause();
if (Sys_Microseconds() - spintime >= 5)
{