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

23 files changed, 114 insertions, 82 deletions

diff --git a/lib/libc/include/riscv64-linux-gnu/bits/endian.h b/lib/libc/include/riscv64-linux-gnu/bits/endian.h
deleted file mode 100644
index ca77ccf806..0000000000
--- a/lib/libc/include/riscv64-linux-gnu/bits/endian.h
+++ /dev/null
@@ -1,5 +0,0 @@
-#ifndef _ENDIAN_H
-# error "Never use <bits/endian.h> directly; include <endian.h> instead."
-#endif
-
-#define __BYTE_ORDER __LITTLE_ENDIAN
\ No newline at end of file
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/endianness.h b/lib/libc/include/riscv64-linux-gnu/bits/endianness.h
new file mode 100644
index 0000000000..16a1549ca7
--- /dev/null
+++ b/lib/libc/include/riscv64-linux-gnu/bits/endianness.h
@@ -0,0 +1,11 @@
+#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
+
+/* RISC-V is little-endian.  */
+#define __BYTE_ORDER __LITTLE_ENDIAN
+
+#endif /* bits/endianness.h */
\ No newline at end of file
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/fcntl.h b/lib/libc/include/riscv64-linux-gnu/bits/fcntl.h
index 08c1da6125..c72b6648aa 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/fcntl.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/fcntl.h
@@ -1,5 +1,5 @@
 /* O_*, F_*, FD_* bit values for Linux / RISC-V.
-   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/riscv64-linux-gnu/bits/fenv.h b/lib/libc/include/riscv64-linux-gnu/bits/fenv.h
index f0c7e3ff45..1cfa3ad192 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/fenv.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/fenv.h
@@ -1,5 +1,5 @@
 /* Floating point environment, RISC-V version.
-   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.
 
    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 _FENV_H
 # error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
@@ -65,7 +65,7 @@ typedef unsigned int fenv_t;
 /* If the default argument is used we use this value.  */
 #define FE_DFL_ENV	((__const fenv_t *) -1)
 
-#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/riscv64-linux-gnu/bits/floatn.h b/lib/libc/include/riscv64-linux-gnu/bits/floatn.h
index 5e7e3f4d2e..a4045e43a3 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/floatn.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/bits/link.h b/lib/libc/include/riscv64-linux-gnu/bits/link.h
index 0e5bab4b0a..5ffe4fc4c4 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/link.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/link.h
@@ -1,5 +1,5 @@
 /* Machine-specific declarations for dynamic linker interface.  RISC-V version.
-   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.
 
    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	_LINK_H
 # error "Never include <bits/link.h> directly; use <link.h> instead."
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/long-double.h b/lib/libc/include/riscv64-linux-gnu/bits/long-double.h
index 12e30804a4..ce06962796 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/long-double.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/bits/procfs.h b/lib/libc/include/riscv64-linux-gnu/bits/procfs.h
index 8625034641..e967fb281d 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/procfs.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/procfs.h
@@ -1,5 +1,5 @@
 /* Types for registers for sys/procfs.h.  RISC-V 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.
 
    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 _SYS_PROCFS_H
 # error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead."
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/pthreadtypes-arch.h b/lib/libc/include/riscv64-linux-gnu/bits/pthreadtypes-arch.h
index 9eb39ee7dc..3bb9234ed1 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/pthreadtypes-arch.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/pthreadtypes-arch.h
@@ -1,5 +1,5 @@
 /* Machine-specific pthread type layouts.  RISC-V version.
-   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.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -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>
 
 #if __riscv_xlen == 64
 # define __SIZEOF_PTHREAD_ATTR_T 		56
@@ -35,34 +35,7 @@
 # error "rv32i-based systems are not supported"
 #endif
 
-#define __PTHREAD_COMPAT_PADDING_MID
-#define __PTHREAD_COMPAT_PADDING_END
-#define __PTHREAD_MUTEX_LOCK_ELISION		0
-#define __PTHREAD_MUTEX_USE_UNION	 	0
-#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND	0
-
 #define __LOCK_ALIGNMENT
 #define __ONCE_ALIGNMENT
 
-/* There is a lot of padding in this structure.  While it's not strictly
-   necessary on RISC-V, we're going to leave it in to be on the safe side in
-   case it's needed in the future.  Most other architectures have the padding,
-   so this gives us the same extensibility as everyone else has.  */
-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/riscv64-linux-gnu/bits/semaphore.h b/lib/libc/include/riscv64-linux-gnu/bits/semaphore.h
index d9a849248e..7277c658e8 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/semaphore.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/semaphore.h
@@ -1,5 +1,5 @@
 /* Machine-specific POSIX semaphore type layouts.  RISC-V version.
-   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.
 
    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 _SEMAPHORE_H
 # error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/setjmp.h b/lib/libc/include/riscv64-linux-gnu/bits/setjmp.h
index 8e08e99fa7..9413cc01d2 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/setjmp.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/setjmp.h
@@ -1,5 +1,5 @@
 /* Define the machine-dependent type `jmp_buf'.  RISC-V version.
-   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.
 
    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 _RISCV_BITS_SETJMP_H
 #define _RISCV_BITS_SETJMP_H
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/sigcontext.h b/lib/libc/include/riscv64-linux-gnu/bits/sigcontext.h
index 767744f947..65693f5954 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/sigcontext.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/sigcontext.h
@@ -1,5 +1,5 @@
 /* Machine-dependent signal context structure for Linux.  RISC-V version.
-   Copyright (C) 1996-2019 Free Software Foundation, Inc.  This file is part of the GNU C Library.
+   Copyright (C) 1996-2020 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
@@ -13,7 +13,7 @@
 
    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_SIGCONTEXT_H
 #define _BITS_SIGCONTEXT_H 1
diff --git a/lib/libc/include/riscv64-linux-gnu/bits/stat.h b/lib/libc/include/riscv64-linux-gnu/bits/stat.h
index 4f23077263..2df73d11e3 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/stat.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/bits/statfs.h b/lib/libc/include/riscv64-linux-gnu/bits/statfs.h
index 8da970d4a9..61c27388e9 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/statfs.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/bits/struct_rwlock.h b/lib/libc/include/riscv64-linux-gnu/bits/struct_rwlock.h
new file mode 100644
index 0000000000..46d00e138a
--- /dev/null
+++ b/lib/libc/include/riscv64-linux-gnu/bits/struct_rwlock.h
@@ -0,0 +1,45 @@
+/* RISC-V 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
+
+/* There is a lot of padding in this structure.  While it's not strictly
+   necessary on RISC-V, we're going to leave it in to be on the safe side in
+   case it's needed in the future.  Most other architectures have the padding,
+   so this gives us the same extensibility as everyone else has.  */
+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/riscv64-linux-gnu/bits/typesizes.h b/lib/libc/include/riscv64-linux-gnu/bits/typesizes.h
index 8cfcacef57..d9e9b274ac 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/typesizes.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/bits/wordsize.h b/lib/libc/include/riscv64-linux-gnu/bits/wordsize.h
index db13f746a1..1c5e427762 100644
--- a/lib/libc/include/riscv64-linux-gnu/bits/wordsize.h
+++ b/lib/libc/include/riscv64-linux-gnu/bits/wordsize.h
@@ -1,5 +1,5 @@
 /* Determine the wordsize from the preprocessor defines.  RISC-V version.
-   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.
 
    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 __riscv_xlen == (__SIZEOF_POINTER__ * 8)
 # define __WORDSIZE __riscv_xlen
diff --git a/lib/libc/include/riscv64-linux-gnu/fpu_control.h b/lib/libc/include/riscv64-linux-gnu/fpu_control.h
index 4647e5c877..4aeb6aa44b 100644
--- a/lib/libc/include/riscv64-linux-gnu/fpu_control.h
+++ b/lib/libc/include/riscv64-linux-gnu/fpu_control.h
@@ -1,5 +1,5 @@
 /* FPU control word bits.  RISC-V 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.
 
    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 _FPU_CONTROL_H
 #define _FPU_CONTROL_H
diff --git a/lib/libc/include/riscv64-linux-gnu/ieee754.h b/lib/libc/include/riscv64-linux-gnu/ieee754.h
index e347e4a6e5..63fa9c5fce 100644
--- a/lib/libc/include/riscv64-linux-gnu/ieee754.h
+++ b/lib/libc/include/riscv64-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/riscv64-linux-gnu/sys/asm.h b/lib/libc/include/riscv64-linux-gnu/sys/asm.h
index c42716a9fe..01c6095c69 100644
--- a/lib/libc/include/riscv64-linux-gnu/sys/asm.h
+++ b/lib/libc/include/riscv64-linux-gnu/sys/asm.h
@@ -1,5 +1,5 @@
 /* Miscellaneous macros.
-   Copyright (C) 2000-2019 Free Software Foundation, Inc.
+   Copyright (C) 2000-2020 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 _SYS_ASM_H
 #define _SYS_ASM_H
diff --git a/lib/libc/include/riscv64-linux-gnu/sys/cachectl.h b/lib/libc/include/riscv64-linux-gnu/sys/cachectl.h
index bd18c3c657..7d627edf2c 100644
--- a/lib/libc/include/riscv64-linux-gnu/sys/cachectl.h
+++ b/lib/libc/include/riscv64-linux-gnu/sys/cachectl.h
@@ -1,5 +1,5 @@
 /* RISC-V instruction cache flushing interface
-   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.
 
@@ -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_CACHECTL_H
 #define _SYS_CACHECTL_H 1
diff --git a/lib/libc/include/riscv64-linux-gnu/sys/ucontext.h b/lib/libc/include/riscv64-linux-gnu/sys/ucontext.h
index 5fc777e662..5d7aeabad1 100644
--- a/lib/libc/include/riscv64-linux-gnu/sys/ucontext.h
+++ b/lib/libc/include/riscv64-linux-gnu/sys/ucontext.h
@@ -1,5 +1,5 @@
 /* struct ucontext definition, RISC-V version.
-   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.
 
    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/>.  */
 
 /* Don't rely on this, the interface is currently messed up and may need to
    be broken to be fixed.  */
diff --git a/lib/libc/include/riscv64-linux-gnu/sys/user.h b/lib/libc/include/riscv64-linux-gnu/sys/user.h
index 5dbff3ead6..6e235050f8 100644
--- a/lib/libc/include/riscv64-linux-gnu/sys/user.h
+++ b/lib/libc/include/riscv64-linux-gnu/sys/user.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2020 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
@@ -13,7 +13,7 @@
 
    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