1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/aarch64/dl-prop.h b/sysdeps/aarch64/dl-prop.h
new file mode 100644
index 0000000000..b0785bda83
--- /dev/null
+++ b/sysdeps/aarch64/dl-prop.h
@@ -0,0 +1,63 @@
+/* Support for GNU properties.  AArch64 version.
+   Copyright (C) 2018-2020 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
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _DL_PROP_H
+#define _DL_PROP_H
+
+extern void _dl_bti_check (struct link_map *, const char *)
+    attribute_hidden;
+
+static inline void __attribute__ ((always_inline))
+_rtld_main_check (struct link_map *m, const char *program)
+{
+  _dl_bti_check (m, program);
+}
+
+static inline void __attribute__ ((always_inline))
+_dl_open_check (struct link_map *m)
+{
+  _dl_bti_check (m, NULL);
+}
+
+static inline void __attribute__ ((always_inline))
+_dl_process_pt_note (struct link_map *l, const ElfW(Phdr) *ph)
+{
+}
+
+static inline int
+_dl_process_gnu_property (struct link_map *l, uint32_t type, uint32_t datasz,
+			  void *data)
+{
+  if (type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
+    {
+      /* Stop if the property note is ill-formed.  */
+      if (datasz != 4)
+	return 0;
+
+      unsigned int feature_1 = *(unsigned int *) data;
+      if (feature_1 & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
+	l->l_mach.bti = true;
+
+      /* Stop if we processed the property note.  */
+      return 0;
+    }
+  /* Continue.  */
+  return 1;
+}
+
+#endif /* _DL_PROP_H */