From bbfb934e808c6602d3a059adf270e997b71b900c Mon Sep 17 00:00:00 2001
From: Rachael Alexanderson <madame-rachelle@users.noreply.github.com>
Date: Sun, 6 Dec 2020 23:50:15 -0500
Subject: [PATCH] - and now it builds! but ... does it run?

---
 src/common/engine/stats.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/common/engine/stats.h b/src/common/engine/stats.h
index 563fc9529f..92456ffb0d 100644
--- a/src/common/engine/stats.h
+++ b/src/common/engine/stats.h
@@ -97,11 +97,13 @@ private:
 #else
 
 // Windows and macOS
+#ifndef _M_ARM
 #include "x86.h"
+#endif
 
 extern double PerfToSec, PerfToMillisec;
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && !defined(_M_ARM64)
 // Trying to include intrin.h here results in some bizarre errors, so I'm just
 // going to duplicate the function prototype instead.
 //#include <intrin.h>
@@ -111,6 +113,12 @@ inline unsigned __int64 rdtsc()
 {
 	return __rdtsc();
 }
+#elif defined(_MSC_VER) && defined(_M_ARM64)
+#include <intrin.h>
+inline unsigned __int64 rdtsc()
+{
+	return _ReadStatusReg(ARM64_SYSREG(3, 3, 13, 0, 2)); //_ReadStatusReg(PMCCNTR_EL0);
+}
 #elif defined __APPLE__ && (defined __i386__ || defined __x86_64__)
 inline uint64_t rdtsc()
 {