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Initial support for compiling on ARM64. (#788)

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squidbus 2024-09-09 03:23:16 -07:00 • committed by GitHub
parent adfb3af95f
commit 411449cd51
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GPG key ID: B5690EEEBB952194
12 changed files with 166 additions and 25 deletions
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17
src/common/rdtsc.h
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@ -3,6 +3,8 @@
#pragma once
#include "common/arch.h"
#ifdef _MSC_VER
#include <intrin.h>
#endif
@ -13,15 +15,20 @@ namespace Common {
#ifdef _MSC_VER
__forceinline static u64 FencedRDTSC() {
#ifdef ARCH_X86_64
_mm_lfence();
_ReadWriteBarrier();
const u64 result = __rdtsc();
_mm_lfence();
_ReadWriteBarrier();
return result;
#else
#error "Missing FencedRDTSC() implementation for target CPU architecture."
#endif
}
#else
static inline u64 FencedRDTSC() {
#ifdef ARCH_X86_64
u64 eax;
u64 edx;
asm volatile("lfence\n\t"
@ -29,6 +36,16 @@ static inline u64 FencedRDTSC() {
"lfence\n\t"
: "=a"(eax), "=d"(edx));
return (edx << 32) | eax;
#elif defined(ARCH_ARM64)
u64 ret;
asm volatile("isb\n\t"
"mrs %0, cntvct_el0\n\t"
"isb\n\t"
: "=r"(ret)::"memory");
return ret;
#else
#error "Missing FencedRDTSC() implementation for target CPU architecture."
#endif
}
#endif