From 4245475514544c8d017883f42aac2df6c7bfa3c6 Mon Sep 17 00:00:00 2001
From: lazymio <mio@lazym.io>
Date: Tue, 13 Feb 2024 16:21:53 +0800
Subject: [PATCH] Detect if we have valid pthread_jit_write_protect_np

---
 qemu/configure | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/qemu/configure b/qemu/configure
index 80080d0d..c17c2cf0 100755
--- a/qemu/configure
+++ b/qemu/configure
@@ -2139,13 +2139,40 @@ fi
 if [ "$darwin" = "yes" ] ; then
   cat > $TMPC << EOF
 #include <pthread.h>
-int main() { pthread_jit_write_protect_np(0); return 0; }
+int main() { pthread_jit_write_protect_np(0); return 0;}
 EOF
   if ! compile_prog ""; then
     have_pthread_jit_protect='no'
   else
     have_pthread_jit_protect='yes'
   fi
+
+  if test "$have_pthread_jit_protect" = "yes" ; then
+    cat > $TMPC << EOF
+#include "stdint.h"
+int main() {
+    uint64_t commpage_sprr = (*(uint64_t*)0xFFFFFC10C);
+
+    // In Apple Hypervisor, this value is not accessbile and
+    // pthread_jit_write_protect_np essentially is a no-op
+    if (!commpage_sprr) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+EOF
+    if ! compile_prog ""; then
+      have_pthread_jit_protect='no'
+    else
+      $TMPE
+      if [ $? -eq 0 ]; then
+        have_pthread_jit_protect='yes'
+      else
+        have_pthread_jit_protect='no'
+      fi
+    fi
+  fi
 fi
 
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