From 8de238adcda4e814502ddc53ba830fc1bd8e83c3 Mon Sep 17 00:00:00 2001
From: tevador <tevador@gmail.com>
Date: Mon, 30 Nov 2020 11:04:17 +0100
Subject: [PATCH] Faster W^X policy for apple silicon macs

---
 src/virtual_memory.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/virtual_memory.cpp b/src/virtual_memory.cpp
index 2f3ee39..1a32f5f 100644
--- a/src/virtual_memory.cpp
+++ b/src/virtual_memory.cpp
@@ -35,6 +35,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #else
 #ifdef __APPLE__
 #include <mach/vm_statistics.h>
+#include <TargetConditionals.h>
+#include <pthread.h>
 #endif
 #include <sys/types.h>
 #include <sys/mman.h>
@@ -129,11 +131,19 @@ static inline void pageProtect(void* ptr, std::size_t bytes, int rules) {
 }
 
 void setPagesRW(void* ptr, std::size_t bytes) {
+#if defined(__APPLE__) && defined(__aarch64__) && TARGET_OS_OSX
+	pthread_jit_write_protect_np(false);
+#else
 	pageProtect(ptr, bytes, PAGE_READWRITE);
+#endif
 }
 
 void setPagesRX(void* ptr, std::size_t bytes) {
+#if defined(__APPLE__) && defined(__aarch64__) && TARGET_OS_OSX
+	pthread_jit_write_protect_np(true);
+#else
 	pageProtect(ptr, bytes, PAGE_EXECUTE_READ);
+#endif
 }
 
 void setPagesRWX(void* ptr, std::size_t bytes) {