Preliminary support for systems which require changing JIT memory regions privilege from read / write to read / executable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56303 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 0 deletions

diff --git a/include/llvm/System/Memory.h b/include/llvm/System/Memory.h
index 014633c8c5..86895e2317 100644
--- a/include/llvm/System/Memory.h
+++ b/include/llvm/System/Memory.h
@@ -69,6 +69,11 @@ namespace sys {
     /// that has been emitted it must invalidate the instruction cache on some
     /// platforms.
     static void InvalidateInstructionCache(const void *Addr, size_t Len);
+
+    /// SetRXPrivilege - Before the JIT can run a block of code, it has to be
+    /// given read and executable privilege. Return true if it is already r-x
+    /// or the system is able to change its previlege.
+    static bool SetRXPrivilege(const void *Addr, size_t Size);
   };
 }
 }