Filza 27.2 worse_query: public and developer builds

kexploit/xpaci.h

@@ -0,0 +1,23 @@
+// ptrauth.h replacement
+#include <stdbool.h>
+
+extern bool gIsPACSupported;
+
+static uint64_t __attribute((naked)) __xpaci(uint64_t a)
+{
+    asm(".long        0xDAC143E0"); // XPACI X0
+    asm("ret");
+}
+
+static uint64_t xpaci(uint64_t a)
+{
+    if(!gIsPACSupported)    return a;
+    
+    // If a looks like a non-pac'd pointer just return it
+    if ((a & 0xFFFFFF0000000000) == 0xFFFFFF0000000000)
+    {
+        return a;
+    }
+    
+    return __xpaci(a);
+}