Preliminary support for systems which require changing JIT memory regions privilege...

[oota-llvm.git] / lib / System / Memory.cpp

diff --git a/lib/System/Memory.cpp b/lib/System/Memory.cpp
index 3660bcb1a4a251f7d5e810fcdfdf17d658a71767..2fc6a23a3af4398534149595a84de8043efe47ee 100644 (file)
--- a/lib/System/Memory.cpp
+++ b/lib/System/Memory.cpp
@@ -58,3 +58,14 @@ void llvm::sys::Memory::InvalidateInstructionCache(const void *Addr,
 #endif  // end PPC
 
 }
+
+bool llvm::sys::Memory::SetRXPrivilege(const void *Addr, size_t Size) {
+#if defined(__APPLE__) && defined(__arm__)
+  kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)Addr,
+                                (vm_size_t)Size, 0,
+                                VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_COPY);
+  return KERN_SUCCESS == kr;
+#else
+  return true;
+#endif
+}