[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/elf/dl-unmap-segments.h b/ap/libc/glibc/glibc-2.23/elf/dl-unmap-segments.h
new file mode 100644
index 0000000..44d91c4
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/elf/dl-unmap-segments.h
@@ -0,0 +1,35 @@
+/* Unmap a shared object's segments. Generic version.
+ Copyright (C) 2014-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _DL_UNMAP_SEGMENTS_H
+#define _DL_UNMAP_SEGMENTS_H 1
+
+#include <link.h>
+#include <sys/mman.h>
+
+/* _dl_map_segments ensures that any whole pages in gaps between segments
+ are filled in with PROT_NONE mappings. So we can just unmap the whole
+ range in one fell swoop. */
+
+static __always_inline void
+_dl_unmap_segments (struct link_map *l)
+{
+ __munmap ((void *) l->l_map_start, l->l_map_end - l->l_map_start);
+}
+
+#endif /* dl-unmap-segments.h */