Merge remote-tracking branch 'origin/master' into llvm10

27 files changed, 125 insertions, 165 deletions

diff --git a/lib/libc/include/aarch64-linux-gnu/bits/endian.h b/lib/libc/include/aarch64-linux-gnu/bits/endian.h
deleted file mode 100644
index b62d37d773..0000000000
--- a/lib/libc/include/aarch64-linux-gnu/bits/endian.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Copyright (C) 1997-2019 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 _ENDIAN_H
-# error "Never use <bits/endian.h> directly; include <endian.h> instead."
-#endif
-
-/* AArch64 can be either big or little endian.  */
-#ifdef __AARCH64EB__
-# define __BYTE_ORDER __BIG_ENDIAN
-#else
-# define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
-
-#define __FLOAT_WORD_ORDER __BYTE_ORDER
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/endianness.h b/lib/libc/include/aarch64-linux-gnu/bits/endianness.h
new file mode 100644
index 0000000000..5db8061829
--- /dev/null
+++ b/lib/libc/include/aarch64-linux-gnu/bits/endianness.h
@@ -0,0 +1,15 @@
+#ifndef _BITS_ENDIANNESS_H
+#define _BITS_ENDIANNESS_H 1
+
+#ifndef _BITS_ENDIAN_H
+# error "Never use <bits/endianness.h> directly; include <endian.h> instead."
+#endif
+
+/* AArch64 has selectable endianness.  */
+#ifdef __AARCH64EB__
+# define __BYTE_ORDER __BIG_ENDIAN
+#else
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
+
+#endif /* bits/endianness.h */
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/fcntl.h b/lib/libc/include/aarch64-linux-gnu/bits/fcntl.h
index d2dd7e88aa..ccf39f29d3 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/fcntl.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/fcntl.h
@@ -1,5 +1,5 @@
 /* O_*, F_*, FD_* bit values for the AArch64 Linux ABI.
-   Copyright (C) 2011-2019 Free Software Foundation, Inc.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef	_FCNTL_H
 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/fenv.h b/lib/libc/include/aarch64-linux-gnu/bits/fenv.h
index 2e080ee28d..de4e9fb758 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/fenv.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/fenv.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2004-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _FENV_H
 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
@@ -73,7 +73,7 @@ fenv_t;
 # define FE_NOMASK_ENV  ((const fenv_t *) -2)
 #endif
 
-#if __GLIBC_USE (IEC_60559_BFP_EXT)
+#if __GLIBC_USE (IEC_60559_BFP_EXT_C2X)
 /* Type representing floating-point control modes.  */
 typedef unsigned int femode_t;
 
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/floatn.h b/lib/libc/include/aarch64-linux-gnu/bits/floatn.h
index 5e7e3f4d2e..a4045e43a3 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/floatn.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/floatn.h
@@ -1,5 +1,5 @@
 /* Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
-   Copyright (C) 2017-2019 Free Software Foundation, Inc.
+   Copyright (C) 2017-2020 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
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_FLOATN_H
 #define _BITS_FLOATN_H
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/fp-fast.h b/lib/libc/include/aarch64-linux-gnu/bits/fp-fast.h
index c502e67c75..0cf198e478 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/fp-fast.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/fp-fast.h
@@ -1,5 +1,5 @@
 /* Define FP_FAST_* macros.  AArch64 version.
-   Copyright (C) 2016-2019 Free Software Foundation, Inc.
+   Copyright (C) 2016-2020 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
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _MATH_H
 # error "Never use <bits/fp-fast.h> directly; include <math.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/hwcap.h b/lib/libc/include/aarch64-linux-gnu/bits/hwcap.h
index 629784d923..cf38b9d8b7 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/hwcap.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/hwcap.h
@@ -1,5 +1,5 @@
 /* Defines for bits in AT_HWCAP.  AArch64 Linux version.
-   Copyright (C) 2016-2019 Free Software Foundation, Inc.
+   Copyright (C) 2016-2020 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
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #if !defined (_SYS_AUXV_H)
 # error "Never include <bits/hwcap.h> directly; use <sys/auxv.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/ipc.h b/lib/libc/include/aarch64-linux-gnu/bits/ipc.h
deleted file mode 100644
index 6edd48ba78..0000000000
--- a/lib/libc/include/aarch64-linux-gnu/bits/ipc.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/* Copyright (C) 1995-2019 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 _SYS_IPC_H
-# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead."
-#endif
-
-#include <bits/types.h>
-
-/* Mode bits for `msgget', `semget', and `shmget'.  */
-#define IPC_CREAT	01000		/* Create key if key does not exist. */
-#define IPC_EXCL	02000		/* Fail if key exists.  */
-#define IPC_NOWAIT	04000		/* Return error on wait.  */
-
-/* Control commands for `msgctl', `semctl', and `shmctl'.  */
-#define IPC_RMID	0		/* Remove identifier.  */
-#define IPC_SET		1		/* Set `ipc_perm' options.  */
-#define IPC_STAT	2		/* Get `ipc_perm' options.  */
-#ifdef __USE_GNU
-# define IPC_INFO	3		/* See ipcs.  */
-#endif
-
-/* Special key values.  */
-#define IPC_PRIVATE	((__key_t) 0)	/* Private key.  */
-
-
-/* Data structure used to pass permission information to IPC operations.  */
-struct ipc_perm
-  {
-    __key_t __key;			/* Key.  */
-    __uid_t uid;			/* Owner's user ID.  */
-    __gid_t gid;			/* Owner's group ID.  */
-    __uid_t cuid;			/* Creator's user ID.  */
-    __gid_t cgid;			/* Creator's group ID.  */
-    unsigned int mode;			/* Read/write permission.  */
-    unsigned short int __seq;		/* Sequence number.  */
-    unsigned short int __pad1;
-    __syscall_ulong_t __glibc_reserved1;
-    __syscall_ulong_t __glibc_reserved2;
-  };
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/link.h b/lib/libc/include/aarch64-linux-gnu/bits/link.h
index 71f99857bc..bf9953595f 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/link.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/link.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2005-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef	_LINK_H
 # error "Never include <bits/link.h> directly; use <link.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/local_lim.h b/lib/libc/include/aarch64-linux-gnu/bits/local_lim.h
index 738c65bc5a..155d60e416 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/local_lim.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/local_lim.h
@@ -1,5 +1,5 @@
 /* Minimum guaranteed maximum values for system limits.  Linux version.
-   Copyright (C) 1993-2019 Free Software Foundation, Inc.
+   Copyright (C) 1993-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 /* The kernel header pollutes the namespace with the NR_OPEN symbol
    and defines LINK_MAX although filesystems have different maxima.  A
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/long-double.h b/lib/libc/include/aarch64-linux-gnu/bits/long-double.h
index 12e30804a4..ce06962796 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/long-double.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/long-double.h
@@ -1,5 +1,5 @@
 /* Properties of long double type.  ldbl-128 version.
-   Copyright (C) 2016-2019 Free Software Foundation, Inc.
+   Copyright (C) 2016-2020 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
@@ -14,7 +14,8 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 /* long double is distinct from double, so there is nothing to
-   define here.  */
\ No newline at end of file
+   define here.  */
+#define __LONG_DOUBLE_USES_FLOAT128 0
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/procfs.h b/lib/libc/include/aarch64-linux-gnu/bits/procfs.h
index cdc07b27d9..efb589274b 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/procfs.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/procfs.h
@@ -1,5 +1,5 @@
 /* Types for registers for sys/procfs.h.  AArch64 version.
-   Copyright (C) 1996-2019 Free Software Foundation, Inc.
+   Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_PROCFS_H
 # error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/pthreadtypes-arch.h b/lib/libc/include/aarch64-linux-gnu/bits/pthreadtypes-arch.h
index ef00f65b66..e64b19346e 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/pthreadtypes-arch.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/pthreadtypes-arch.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,12 +14,12 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_PTHREADTYPES_ARCH_H
 #define _BITS_PTHREADTYPES_ARCH_H	1
 
-#include <endian.h>
+#include <bits/endian.h>
 
 #ifdef __ILP32__
 # define __SIZEOF_PTHREAD_ATTR_T        32
@@ -41,31 +41,7 @@
 #define __SIZEOF_PTHREAD_COND_T         48
 #define __SIZEOF_PTHREAD_RWLOCKATTR_T	8
 
-/* Definitions for internal mutex struct.  */
-#define __PTHREAD_COMPAT_PADDING_MID
-#define __PTHREAD_COMPAT_PADDING_END
-#define __PTHREAD_MUTEX_LOCK_ELISION	0
-#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND  0
-#define __PTHREAD_MUTEX_USE_UNION          0
-
 #define __LOCK_ALIGNMENT
 #define __ONCE_ALIGNMENT
 
-struct __pthread_rwlock_arch_t
-{
-  unsigned int __readers;
-  unsigned int __writers;
-  unsigned int __wrphase_futex;
-  unsigned int __writers_futex;
-  unsigned int __pad3;
-  unsigned int __pad4;
-  int __cur_writer;
-  int __shared;
-  unsigned long int __pad1;
-  unsigned long int __pad2;
-  unsigned int __flags;
-};
-
-#define __PTHREAD_RWLOCK_ELISION_EXTRA 0
-
 #endif	/* bits/pthreadtypes.h */
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/semaphore.h b/lib/libc/include/aarch64-linux-gnu/bits/semaphore.h
index a15f480bd0..64a56cc2f9 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/semaphore.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/semaphore.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SEMAPHORE_H
 # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/setjmp.h b/lib/libc/include/aarch64-linux-gnu/bits/setjmp.h
index 407f86adc1..2b63e21916 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/setjmp.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/setjmp.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997-2019 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_SETJMP_H
 #define _BITS_SETJMP_H 1
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/sigstack.h b/lib/libc/include/aarch64-linux-gnu/bits/sigstack.h
index 8921d2a88b..7294db7d4c 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/sigstack.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/sigstack.h
@@ -1,5 +1,5 @@
 /* sigstack, sigaltstack definitions.
-   Copyright (C) 2015-2019 Free Software Foundation, Inc.
+   Copyright (C) 2015-2020 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
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_SIGSTACK_H
 #define _BITS_SIGSTACK_H 1
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/stat.h b/lib/libc/include/aarch64-linux-gnu/bits/stat.h
index 4f23077263..2df73d11e3 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/stat.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/stat.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2020 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #if !defined _SYS_STAT_H && !defined _FCNTL_H
 # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
@@ -23,7 +23,7 @@
 #ifndef _BITS_STAT_H
 #define _BITS_STAT_H	1
 
-#include <endian.h>
+#include <bits/endian.h>
 #include <bits/wordsize.h>
 
 /* 64-bit libc uses the kernel's 'struct stat', accessed via the
@@ -42,7 +42,10 @@
 
 #if defined __USE_FILE_OFFSET64
 # define __field64(type, type64, name) type64 name
-#elif __WORDSIZE == 64
+#elif __WORDSIZE == 64 || defined __INO_T_MATCHES_INO64_T
+# if defined __INO_T_MATCHES_INO64_T && !defined __OFF_T_MATCHES_OFF64_T
+#  error "ino_t and off_t must both be the same type"
+# endif
 # define __field64(type, type64, name) type name
 #elif __BYTE_ORDER == __LITTLE_ENDIAN
 # define __field64(type, type64, name) \
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/statfs.h b/lib/libc/include/aarch64-linux-gnu/bits/statfs.h
index 8da970d4a9..61c27388e9 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/statfs.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/statfs.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2020 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
 
@@ -14,13 +14,13 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_STATFS_H
 # error "Never include <bits/statfs.h> directly; use <sys/statfs.h> instead."
 #endif
 
-#include <endian.h>
+#include <bits/endian.h>
 #include <bits/types.h>
 #include <bits/wordsize.h>
 
@@ -34,7 +34,7 @@
 
 #if defined __USE_FILE_OFFSET64
 # define __field64(type, type64, name) type64 name
-#elif __WORDSIZE == 64
+#elif __WORDSIZE == 64 || __STATFS_MATCHES_STATFS64
 # define __field64(type, type64, name) type name
 #elif __BYTE_ORDER == __LITTLE_ENDIAN
 # define __field64(type, type64, name) \
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/struct_rwlock.h b/lib/libc/include/aarch64-linux-gnu/bits/struct_rwlock.h
new file mode 100644
index 0000000000..1f6f86e910
--- /dev/null
+++ b/lib/libc/include/aarch64-linux-gnu/bits/struct_rwlock.h
@@ -0,0 +1,41 @@
+/* AArch64 internal rwlock struct definitions.
+   Copyright (C) 2019-2020 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
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _RWLOCK_INTERNAL_H
+#define _RWLOCK_INTERNAL_H
+
+struct __pthread_rwlock_arch_t
+{
+  unsigned int __readers;
+  unsigned int __writers;
+  unsigned int __wrphase_futex;
+  unsigned int __writers_futex;
+  unsigned int __pad3;
+  unsigned int __pad4;
+  int __cur_writer;
+  int __shared;
+  unsigned long int __pad1;
+  unsigned long int __pad2;
+  unsigned int __flags;
+};
+
+#define __PTHREAD_RWLOCK_INITIALIZER(__flags) \
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, __flags
+
+#endif
\ No newline at end of file
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/typesizes.h b/lib/libc/include/aarch64-linux-gnu/bits/typesizes.h
index 8cfcacef57..d9e9b274ac 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/typesizes.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/typesizes.h
@@ -1,5 +1,5 @@
 /* bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
-   Copyright (C) 2011-2019 Free Software Foundation, Inc.
+   Copyright (C) 2011-2020 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
 
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_TYPES_H
 # error "Never include <bits/typesizes.h> directly; use <sys/types.h> instead."
@@ -73,10 +73,14 @@
 
 /* And for __rlim_t and __rlim64_t.  */
 # define __RLIM_T_MATCHES_RLIM64_T	1
+
+/* And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.  */
+# define __STATFS_MATCHES_STATFS64  1
 #else
 # define __RLIM_T_MATCHES_RLIM64_T	0
-#endif
 
+# define __STATFS_MATCHES_STATFS64  0
+#endif
 /* Number of descriptors that can fit in an `fd_set'.  */
 #define	__FD_SETSIZE		1024
 
diff --git a/lib/libc/include/aarch64-linux-gnu/bits/wordsize.h b/lib/libc/include/aarch64-linux-gnu/bits/wordsize.h
index 52f24f0980..68b28bf2d7 100644
--- a/lib/libc/include/aarch64-linux-gnu/bits/wordsize.h
+++ b/lib/libc/include/aarch64-linux-gnu/bits/wordsize.h
@@ -1,6 +1,6 @@
 /* Determine the wordsize from the preprocessor defines.
 
-   Copyright (C) 2016-2019 Free Software Foundation, Inc.
+   Copyright (C) 2016-2020 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
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifdef __LP64__
 # define __WORDSIZE			64
diff --git a/lib/libc/include/aarch64-linux-gnu/fpu_control.h b/lib/libc/include/aarch64-linux-gnu/fpu_control.h
index eac02cfe26..ba2e530b10 100644
--- a/lib/libc/include/aarch64-linux-gnu/fpu_control.h
+++ b/lib/libc/include/aarch64-linux-gnu/fpu_control.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _AARCH64_FPU_CONTROL_H
 #define _AARCH64_FPU_CONTROL_H
diff --git a/lib/libc/include/aarch64-linux-gnu/ieee754.h b/lib/libc/include/aarch64-linux-gnu/ieee754.h
index e347e4a6e5..63fa9c5fce 100644
--- a/lib/libc/include/aarch64-linux-gnu/ieee754.h
+++ b/lib/libc/include/aarch64-linux-gnu/ieee754.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2019 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2020 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
@@ -13,14 +13,14 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _IEEE754_H
-
 #define _IEEE754_H 1
+
 #include <features.h>
 
-#include <endian.h>
+#include <bits/endian.h>
 
 __BEGIN_DECLS
 
diff --git a/lib/libc/include/aarch64-linux-gnu/sys/elf.h b/lib/libc/include/aarch64-linux-gnu/sys/elf.h
index d7062a3a91..e3e2bac7b2 100644
--- a/lib/libc/include/aarch64-linux-gnu/sys/elf.h
+++ b/lib/libc/include/aarch64-linux-gnu/sys/elf.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2019 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_ELF_H
 #define _SYS_ELF_H	1
diff --git a/lib/libc/include/aarch64-linux-gnu/sys/ptrace.h b/lib/libc/include/aarch64-linux-gnu/sys/ptrace.h
index 59b06682a9..ce7f6bf7c0 100644
--- a/lib/libc/include/aarch64-linux-gnu/sys/ptrace.h
+++ b/lib/libc/include/aarch64-linux-gnu/sys/ptrace.h
@@ -1,5 +1,5 @@
 /* `ptrace' debugger support interface.  Linux/AArch64 version.
-   Copyright (C) 1996-2019 Free Software Foundation, Inc.
+   Copyright (C) 1996-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -15,7 +15,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_PTRACE_H
 #define _SYS_PTRACE_H	1
@@ -136,8 +136,12 @@ enum __ptrace_request
 #define PTRACE_SECCOMP_GET_FILTER PTRACE_SECCOMP_GET_FILTER
 
   /* Get seccomp BPF filter metadata.  */
-  PTRACE_SECCOMP_GET_METADATA = 0x420d
+  PTRACE_SECCOMP_GET_METADATA = 0x420d,
 #define PTRACE_SECCOMP_GET_METADATA PTRACE_SECCOMP_GET_METADATA
+
+  /* Get information about system call.  */
+  PTRACE_GET_SYSCALL_INFO = 0x420e
+#define PTRACE_GET_SYSCALL_INFO PTRACE_GET_SYSCALL_INFO
 };
 
 
diff --git a/lib/libc/include/aarch64-linux-gnu/sys/ucontext.h b/lib/libc/include/aarch64-linux-gnu/sys/ucontext.h
index 273ba806dd..a3ede3eb97 100644
--- a/lib/libc/include/aarch64-linux-gnu/sys/ucontext.h
+++ b/lib/libc/include/aarch64-linux-gnu/sys/ucontext.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-2019 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 /* System V/AArch64 ABI compliant context switching support.  */
 
diff --git a/lib/libc/include/aarch64-linux-gnu/sys/user.h b/lib/libc/include/aarch64-linux-gnu/sys/user.h
index 8daa97548a..ce78f80471 100644
--- a/lib/libc/include/aarch64-linux-gnu/sys/user.h
+++ b/lib/libc/include/aarch64-linux-gnu/sys/user.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
@@ -14,7 +14,7 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _SYS_USER_H
 #define _SYS_USER_H	1