From c5bce670df0c89daf56f0bf07b8e34b9944bc12a Mon Sep 17 00:00:00 2001
From: "Jay Freeman (saurik)" <saurik@saurik.com>
Date: Sun, 18 Mar 2012 17:54:03 -0700
Subject: [PATCH] Use ffi_closure_alloc and ffi_prep_closure_loc on ARM.

---
 Execute.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Execute.cpp b/Execute.cpp
index c6a5a99..13da508 100644
--- a/Execute.cpp
+++ b/Execute.cpp
@@ -695,6 +695,15 @@ Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function,
     // XXX: in point of fact, this may /need/ to leak :(
     Closure_privateData *internal(new Closure_privateData(context, function, type));
 
+#if defined(__APPLE__) && defined(__arm__)
+    void *executable;
+    ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
+
+    ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
+    _assert(status == FFI_OK);
+
+    internal->value_ = executable;
+#else
     ffi_closure *closure((ffi_closure *) _syscall(mmap(
         NULL, sizeof(ffi_closure),
         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
@@ -707,6 +716,7 @@ Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function,
     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 
     internal->value_ = closure;
+#endif
 
     return internal;
 }
-- 
2.45.2