diff --git a/sysdeps/aarch64/Makefile b/sysdeps/aarch64/Makefile
index 9cb141004d..5ae8b082b0 100644
--- a/sysdeps/aarch64/Makefile
+++ b/sysdeps/aarch64/Makefile
@@ -1,5 +1,9 @@
 long-double-fcts = yes
 
+ifeq ($(subdir),elf)
+sysdep-dl-routines += dl-bti
+endif
+
 ifeq ($(subdir),elf)
 sysdep-dl-routines += tlsdesc dl-tlsdesc
 gen-as-const-headers += dl-link.sym
diff --git a/sysdeps/aarch64/dl-bti.c b/sysdeps/aarch64/dl-bti.c
new file mode 100644
index 0000000000..965ddcc732
--- /dev/null
+++ b/sysdeps/aarch64/dl-bti.c
@@ -0,0 +1,54 @@
+/* AArch64 BTI functions.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+
+   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/>.  */
+
+#include <unistd.h>
+#include <errno.h>
+#include <libintl.h>
+#include <ldsodefs.h>
+
+static int
+enable_bti (struct link_map *map, const char *program)
+{
+  const ElfW(Phdr) *phdr;
+  unsigned prot = PROT_READ | PROT_EXEC | PROT_BTI;
+
+  for (phdr = map->l_phdr; phdr < &map->l_phdr[map->l_phnum]; ++phdr)
+    if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_X))
+      {
+	void *start = (void *) (phdr->p_vaddr + map->l_addr);
+	size_t len = phdr->p_memsz;
+	if (__mprotect (start, len, prot) < 0)
+	  {
+	    if (program)
+	      _dl_fatal_printf ("%s: mprotect failed to turn on BTI\n",
+				map->l_name);
+	    else
+	      _dl_signal_error (errno, map->l_name, "dlopen",
+				N_("mprotect failed to turn on BTI"));
+	  }
+      }
+  return 0;
+}
+
+/* Enable BTI for L if required.  */
+
+void
+_dl_bti_check (struct link_map *l, const char *program)
+{
+  if (GLRO(dl_aarch64_cpu_features).bti && l->l_mach.bti)
+    enable_bti (l, program);
+}
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 */
diff --git a/sysdeps/aarch64/linkmap.h b/sysdeps/aarch64/linkmap.h
index 943a9ee9e4..847a03ace2 100644
--- a/sysdeps/aarch64/linkmap.h
+++ b/sysdeps/aarch64/linkmap.h
@@ -16,8 +16,11 @@
    License along with the GNU C Library; if not, see
    <https://www.gnu.org/licenses/>.  */
 
+#include <stdbool.h>
+
 struct link_map_machine
 {
   ElfW(Addr) plt;	  /* Address of .plt */
   void *tlsdesc_table;	  /* Address of TLS descriptor hash table.  */
+  bool bti;		  /* Branch Target Identification is enabled.  */
 };
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
index 4ee14b4208..af90d8a626 100644
--- a/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/hwcap.h
@@ -72,3 +72,4 @@
 #define HWCAP2_BF16		(1 << 14)
 #define HWCAP2_DGH		(1 << 15)
 #define HWCAP2_RNG		(1 << 16)
+#define HWCAP2_BTI		(1 << 17)
diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/mman.h b/sysdeps/unix/sysv/linux/aarch64/bits/mman.h
new file mode 100644
index 0000000000..ecae046344
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/mman.h
@@ -0,0 +1,31 @@
+/* Definitions for POSIX memory map interface.  Linux/AArch64 version.
+   Copyright (C) 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 _SYS_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* AArch64 specific definitions, should be in sync with
+   arch/arm64/include/uapi/asm/mman.h.  */
+
+#define PROT_BTI	0x10
+
+#include <bits/mman-map-flags-generic.h>
+
+/* Include generic Linux declarations.  */
+#include <bits/mman-linux.h>
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
index 896c588fee..b9ab827aca 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
@@ -83,4 +83,7 @@ init_cpu_features (struct cpu_features *cpu_features)
 
   if ((dczid & DCZID_DZP_MASK) == 0)
     cpu_features->zva_size = 4 << (dczid & DCZID_BS_MASK);
+
+  /* Check if BTI is supported.  */
+  cpu_features->bti = GLRO (dl_hwcap2) & HWCAP2_BTI;
 }
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
index 1389cea1b3..a81f186ec2 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
@@ -20,6 +20,7 @@
 #define _CPU_FEATURES_AARCH64_H
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #define MIDR_PARTNUM_SHIFT	4
 #define MIDR_PARTNUM_MASK	(0xfff << MIDR_PARTNUM_SHIFT)
@@ -64,6 +65,7 @@ struct cpu_features
 {
   uint64_t midr_el1;
   unsigned zva_size;
+  bool bti;
 };
 
 #endif /* _CPU_FEATURES_AARCH64_H  */
