--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/dyncall/dyncallback/dyncall_alloc_wx_mmap.c	Tue May 08 16:09:12 2018 +0900
@@ -0,0 +1,42 @@
+/*
+
+ Package: dyncall
+ Library: dyncallback
+ File: dyncallback/dyncall_alloc_wx_mmap.c
+ Description: Allocate write/executable memory - Implementation for posix
+ License:
+
+   Copyright (c) 2007-2011 Daniel Adler <dadler@uni-goettingen.de>,
+                           Tassilo Philipp <tphilipp@potion-studios.com>
+
+   Permission to use, copy, modify, and distribute this software for any
+   purpose with or without fee is hereby granted, provided that the above
+   copyright notice and this permission notice appear in all copies.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+#include "dyncall_alloc_wx.h"
+
+#include <sys/types.h>
+#include <sys/mman.h>
+
+int dcAllocWX(size_t size, void** pp)
+{
+  void* p = mmap(0, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
+  if (p == ( (void*)-1 ) ) return -1;
+  *pp = p;
+  return 0;
+}
+
+void dcFreeWX(void* p, size_t size)
+{
+  munmap(p, size);
+}