From 209e9b9e4b19621bdb68430b383f07a27c8668ac Mon Sep 17 00:00:00 2001
From: Ali Saidi <alisaidi@amazon.com>
Date: Thu, 18 Jan 2024 08:59:36 -0600
Subject: [PATCH] util: add timing assembly for arm64

---
 src/util-cpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util-cpu.c b/src/util-cpu.c
index 897eabfa7e..1ae49e7abe 100644
--- a/src/util-cpu.c
+++ b/src/util-cpu.c
@@ -192,6 +192,10 @@ uint64_t UtilCpuGetTicks(void)
     ::: "%eax", "%ecx", "%edx");
 #endif
 
+#elif defined(__GNUC__) && defined(__aarch64__)
+    __asm__ __volatile__("isb\n\t"
+                         "mrs %0,  cntvct_el0\n\t"
+                         : "=r"(val));
 #else /* #if defined(__GNU__) */
 //#warning Using inferior version of UtilCpuGetTicks
     struct timeval now;