libc: separate linux headers from musl/glibc

21 files changed, 0 insertions, 1095 deletions

diff --git a/libc/include/nios2-linux-gnu/asm/unistd.h b/libc/include/nios2-linux-gnu/asm/unistd.h
deleted file mode 100644
index d9948d8879..0000000000
--- a/libc/include/nios2-linux-gnu/asm/unistd.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * Copyright (C) 2013 Altera Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
- #define sys_mmap2 sys_mmap_pgoff
-
-#define __ARCH_WANT_RENAMEAT
-#define __ARCH_WANT_STAT64
-
-/* Use the standard ABI for syscalls */
-#include <asm-generic/unistd.h>
-
-/* Additional Nios II specific syscalls. */
-#define __NR_cacheflush (__NR_arch_specific_syscall)
-__SYSCALL(__NR_cacheflush, sys_cacheflush)
diff --git a/libc/include/nios2-linux-gnu/bits/endian.h b/libc/include/nios2-linux-gnu/bits/endian.h
deleted file mode 100644
index b18aada80a..0000000000
--- a/libc/include/nios2-linux-gnu/bits/endian.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* The Nios II architecture has selectable endianness.  */
-
-#ifndef _ENDIAN_H
-# error "Never use <bits/endian.h> directly; include <endian.h> instead."
-#endif
-
-#ifdef __nios2_big_endian__
-# define __BYTE_ORDER __BIG_ENDIAN
-#endif
-#ifdef __nios2_little_endian__
-# define __BYTE_ORDER __LITTLE_ENDIAN
-#endif
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/fcntl.h b/libc/include/nios2-linux-gnu/bits/fcntl.h
deleted file mode 100644
index 080f060d61..0000000000
--- a/libc/include/nios2-linux-gnu/bits/fcntl.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/* O_*, F_*, FD_* bit values for the generic Linux ABI.
-   Copyright (C) 2011-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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	_FCNTL_H
-# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
-#endif
-
-#include <bits/wordsize.h>
-
-#if __WORDSIZE == 64
-# define __O_LARGEFILE	0
-#endif
-
-struct flock
-  {
-    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
-    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
-#ifndef __USE_FILE_OFFSET64
-    __off_t l_start;	/* Offset where the lock begins.  */
-    __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
-#else
-    __off64_t l_start;	/* Offset where the lock begins.  */
-    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
-#endif
-    __pid_t l_pid;	/* Process holding the lock.  */
-  };
-
-#ifdef __USE_LARGEFILE64
-struct flock64
-  {
-    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.	*/
-    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
-    __off64_t l_start;	/* Offset where the lock begins.  */
-    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
-    __pid_t l_pid;	/* Process holding the lock.  */
-  };
-#endif
-
-/* Include generic Linux declarations.  */
-#include <bits/fcntl-linux.h>
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/fenv.h b/libc/include/nios2-linux-gnu/bits/fenv.h
deleted file mode 100644
index 336a724a02..0000000000
--- a/libc/include/nios2-linux-gnu/bits/fenv.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Copyright (C) 2012-2019 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 _FENV_H
-# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
-#endif
-
-/* The Altera specified Nios II hardware FPU does not support exceptions,
-   nor does the software floating-point support.  */
-#define FE_ALL_EXCEPT	0
-
-/* Nios II supports only round-to-nearest.  The software
-   floating-point support also acts this way.  */
-enum
-  {
-    __FE_UNDEFINED = 0,
-
-    FE_TONEAREST =
-#define FE_TONEAREST	1
-      FE_TONEAREST,
-  };
-
-/* Type representing exception flags. */
-typedef unsigned int fexcept_t;
-
-/* Type representing floating-point environment.  */
-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)
-/* Type representing floating-point control modes.  */
-typedef unsigned int femode_t;
-
-/* Default floating-point control modes.  */
-# define FE_DFL_MODE	((const femode_t *) -1L)
-#endif
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/floatn.h b/libc/include/nios2-linux-gnu/bits/floatn.h
deleted file mode 100644
index 24852b6800..0000000000
--- a/libc/include/nios2-linux-gnu/bits/floatn.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/* Macros to control TS 18661-3 glibc features.
-   Copyright (C) 2017-2019 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/>.  */
-
-/* Defined to 1 if the current compiler invocation provides a
-   floating-point type with the IEEE 754 binary128 format, and this glibc
-   includes corresponding *f128 interfaces for it.  */
-#define __HAVE_FLOAT128 0
-
-/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
-   from the default float, double and long double types in this glibc.  */
-#define __HAVE_DISTINCT_FLOAT128 0
-
-/* Defined to 1 if the current compiler invocation provides a
-   floating-point type with the right format for _Float64x, and this
-   glibc includes corresponding *f64x interfaces for it.  */
-#define __HAVE_FLOAT64X 0
-
-/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
-   of long double.  Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
-   the format of _Float128, which must be different from that of long
-   double.  */
-#define __HAVE_FLOAT64X_LONG_DOUBLE 0
-
-#ifndef __ASSEMBLER__
-
-/* Defined to concatenate the literal suffix to be used with _Float128
-   types, if __HAVE_FLOAT128 is 1.
-   E.g.: #define __f128(x) x##f128.  */
-# undef __f128
-
-/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1.
-   E.g.: #define __CFLOAT128 _Complex _Float128.  */
-# undef __CFLOAT128
-
-#endif /* !__ASSEMBLER__.  */
-
-#include <bits/floatn-common.h>
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/link.h b/libc/include/nios2-linux-gnu/bits/link.h
deleted file mode 100644
index 2d0ac0e82a..0000000000
--- a/libc/include/nios2-linux-gnu/bits/link.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/* Machine-specific declarations for dynamic linker interface, Nios II version.
-   Copyright (C) 2009-2019 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	_LINK_H
-# error "Never include <bits/link.h> directly; use <link.h> instead."
-#endif
-
-/* Registers for entry into PLT on Nios II.  */
-typedef struct La_nios2_regs
-{
-  uint32_t lr_reg[4]; /* r4 through r7 */
-  uint32_t lr_ra;
-  uint32_t lr_sp;
-} La_nios2_regs;
-
-/* Return values for calls from PLT on Nios II.  */
-typedef struct La_nios2_retval
-{
-  uint32_t lrv_r2;
-  uint32_t lrv_r3;
-} La_nios2_retval;
-
-__BEGIN_DECLS
-
-extern Elf32_Addr la_nios2_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
-					 uintptr_t *__refcook,
-					 uintptr_t *__defcook,
-					 La_nios2_regs *__regs,
-					 unsigned int *__flags,
-					 const char *__symname,
-					 long int *__framesizep);
-extern unsigned int la_nios2_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
-					  uintptr_t *__refcook,
-					  uintptr_t *__defcook,
-					  const La_nios2_regs *__inregs,
-					  La_nios2_retval *__outregs,
-					  const char *symname);
-
-__END_DECLS
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/long-double.h b/libc/include/nios2-linux-gnu/bits/long-double.h
deleted file mode 100644
index 125807d07a..0000000000
--- a/libc/include/nios2-linux-gnu/bits/long-double.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* Properties of long double type.
-   Copyright (C) 2016-2019 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  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/>.  */
-
-/* This header is included by <sys/cdefs.h>.
-
-   If long double is ABI-compatible with double, it should define
-   __NO_LONG_DOUBLE_MATH to 1; otherwise, it should leave
-   __NO_LONG_DOUBLE_MATH undefined.
-
-   If this build of the GNU C Library supports both long double
-   ABI-compatible with double and some other long double format not
-   ABI-compatible with double, it should define
-   __LONG_DOUBLE_MATH_OPTIONAL to 1; otherwise, it should leave
-   __LONG_DOUBLE_MATH_OPTIONAL undefined.
-
-   If __NO_LONG_DOUBLE_MATH is already defined, this header must not
-   define anything; this is needed to work with the definition of
-   __NO_LONG_DOUBLE_MATH in nldbl-compat.h.  */
-
-/* In the default version of this header, long double is
-   ABI-compatible with double.  */
-#ifndef __NO_LONG_DOUBLE_MATH
-# define __NO_LONG_DOUBLE_MATH	1
-#endif
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/procfs.h b/libc/include/nios2-linux-gnu/bits/procfs.h
deleted file mode 100644
index 08cd4accba..0000000000
--- a/libc/include/nios2-linux-gnu/bits/procfs.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* Types for registers for sys/procfs.h.  Nios II version.
-   Copyright (C) 1996-2019 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_PROCFS_H
-# error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead."
-#endif
-
-/* Type for a general-purpose register.  */
-typedef unsigned long elf_greg_t;
-
-/* And the whole bunch of them.  We could have used `struct
-   user_regs' directly in the typedef, but tradition says that
-   the register set is an array, which does have some peculiar
-   semantics, so leave it that way.  */
-#define ELF_NGREG (sizeof (struct user_regs) / sizeof (elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/* Register set for the floating-point registers.  */
-typedef struct user_fpregs elf_fpregset_t;
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/pthreadtypes-arch.h b/libc/include/nios2-linux-gnu/bits/pthreadtypes-arch.h
deleted file mode 100644
index 70de0c4959..0000000000
--- a/libc/include/nios2-linux-gnu/bits/pthreadtypes-arch.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/* Machine-specific pthread type layouts.  Nios II version.
-   Copyright (C) 2012-2019 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 _BITS_PTHREADTYPES_ARCH_H
-#define _BITS_PTHREADTYPES_ARCH_H	1
-
-#include <endian.h>
-
-#define __SIZEOF_PTHREAD_ATTR_T 36
-#define __SIZEOF_PTHREAD_MUTEX_T 24
-#define __SIZEOF_PTHREAD_MUTEXATTR_T 4
-#define __SIZEOF_PTHREAD_COND_T 48
-#define __SIZEOF_PTHREAD_CONDATTR_T 4
-#define __SIZEOF_PTHREAD_RWLOCK_T 32
-#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
-#define __SIZEOF_PTHREAD_BARRIER_T 20
-#define __SIZEOF_PTHREAD_BARRIERATTR_T 4
-
-/* Data structure for mutex handling. */
-#define __PTHREAD_COMPAT_PADDING_MID
-#define __PTHREAD_COMPAT_PADDING_END
-#define __PTHREAD_MUTEX_LOCK_ELISION    0
-#define __PTHREAD_MUTEX_NUSERS_AFTER_KIND  1
-#define __PTHREAD_MUTEX_USE_UNION          1
-
-#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;
-#if __BYTE_ORDER == __BIG_ENDIAN
-  unsigned char __pad1;
-  unsigned char __pad2;
-  unsigned char __shared;
-  /* FLAGS must stay at this position in the structure to maintain
-     binary compatibility.  */
-  unsigned char __flags;
-#else
-  /* FLAGS must stay at this position in the structure to maintain
-     binary compatibility.  */
-  unsigned char __flags;
-  unsigned char __shared;
-  unsigned char __pad1;
-  unsigned char __pad2;
-#endif
-  int __cur_writer;
-};
-
-#define __PTHREAD_RWLOCK_ELISION_EXTRA 0
-
-#endif	/* bits/pthreadtypes.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/semaphore.h b/libc/include/nios2-linux-gnu/bits/semaphore.h
deleted file mode 100644
index a220d26c43..0000000000
--- a/libc/include/nios2-linux-gnu/bits/semaphore.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/* Machine-specific POSIX semaphore type layouts.  Nios II version.
-   Copyright (C) 2002-2019 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 _SEMAPHORE_H
-# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
-#endif
-
-#define __SIZEOF_SEM_T	16
-
-/* Value returned if `sem_open' failed.  */
-#define SEM_FAILED      ((sem_t *) 0)
-
-typedef union
-{
-  char __size[__SIZEOF_SEM_T];
-  long int __align;
-} sem_t;
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/setjmp.h b/libc/include/nios2-linux-gnu/bits/setjmp.h
deleted file mode 100644
index f250698df7..0000000000
--- a/libc/include/nios2-linux-gnu/bits/setjmp.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* Define the machine-dependent type `jmp_buf'.  Nios II version.
-   Copyright (C) 1992-2019 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 _NIOS2_BITS_SETJMP_H
-#define _NIOS2_BITS_SETJMP_H 1
-
-#if !defined(_SETJMP_H) && !defined(_PTHREAD_H)
-# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
-#endif
-
-/* Saves r16-r22 (callee-saved, including GOT pointer), fp (frame pointer),
-   ra (return address), and sp (stack pointer).  */
-typedef int __jmp_buf[10];
-
-#endif /* _NIOS2_BITS_SETJMP_H */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/stat.h b/libc/include/nios2-linux-gnu/bits/stat.h
deleted file mode 100644
index 4f23077263..0000000000
--- a/libc/include/nios2-linux-gnu/bits/stat.h
+++ /dev/null
@@ -1,171 +0,0 @@
-/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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/>.  */
-
-#if !defined _SYS_STAT_H && !defined _FCNTL_H
-# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
-#endif
-
-#ifndef _BITS_STAT_H
-#define _BITS_STAT_H	1
-
-#include <endian.h>
-#include <bits/wordsize.h>
-
-/* 64-bit libc uses the kernel's 'struct stat', accessed via the
-   stat() syscall; 32-bit libc uses the kernel's 'struct stat64'
-   and accesses it via the stat64() syscall.  All the various
-   APIs offered by libc use the kernel shape for their struct stat
-   structure; the only difference is that 32-bit programs not
-   using __USE_FILE_OFFSET64 only see the low 32 bits of some
-   of the fields (specifically st_ino, st_size, and st_blocks).  */
-#define _STAT_VER_KERNEL	0
-#define _STAT_VER_LINUX		0
-#define _STAT_VER		_STAT_VER_KERNEL
-
-/* Versions of the `xmknod' interface.  */
-#define _MKNOD_VER_LINUX	0
-
-#if defined __USE_FILE_OFFSET64
-# define __field64(type, type64, name) type64 name
-#elif __WORDSIZE == 64
-# define __field64(type, type64, name) type name
-#elif __BYTE_ORDER == __LITTLE_ENDIAN
-# define __field64(type, type64, name) \
-  type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
-#else
-# define __field64(type, type64, name) \
-  int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
-#endif
-
-struct stat
-  {
-    __dev_t st_dev;		/* Device.  */
-    __field64(__ino_t, __ino64_t, st_ino);  /* File serial number. */
-    __mode_t st_mode;		/* File mode.  */
-    __nlink_t st_nlink;		/* Link count.  */
-    __uid_t st_uid;		/* User ID of the file's owner.	*/
-    __gid_t st_gid;		/* Group ID of the file's group.*/
-    __dev_t st_rdev;		/* Device number, if device.  */
-    __dev_t __pad1;
-    __field64(__off_t, __off64_t, st_size);  /* Size of file, in bytes. */
-    __blksize_t st_blksize;	/* Optimal block size for I/O.  */
-    int __pad2;
-    __field64(__blkcnt_t, __blkcnt64_t, st_blocks);  /* 512-byte blocks */
-#ifdef __USE_XOPEN2K8
-    /* Nanosecond resolution timestamps are stored in a format
-       equivalent to 'struct timespec'.  This is the type used
-       whenever possible but the Unix namespace rules do not allow the
-       identifier 'timespec' to appear in the <sys/stat.h> header.
-       Therefore we have to handle the use of this header in strictly
-       standard-compliant sources special.  */
-    struct timespec st_atim;		/* Time of last access.  */
-    struct timespec st_mtim;		/* Time of last modification.  */
-    struct timespec st_ctim;		/* Time of last status change.  */
-# define st_atime st_atim.tv_sec	/* Backward compatibility.  */
-# define st_mtime st_mtim.tv_sec
-# define st_ctime st_ctim.tv_sec
-#else
-    __time_t st_atime;			/* Time of last access.  */
-    unsigned long int st_atimensec;	/* Nscecs of last access.  */
-    __time_t st_mtime;			/* Time of last modification.  */
-    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
-    __time_t st_ctime;			/* Time of last status change.  */
-    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
-#endif
-    int __glibc_reserved[2];
-  };
-
-#undef __field64
-
-#ifdef __USE_LARGEFILE64
-struct stat64
-  {
-    __dev_t st_dev;		/* Device.  */
-    __ino64_t st_ino;		/* File serial number.	*/
-    __mode_t st_mode;		/* File mode.  */
-    __nlink_t st_nlink;		/* Link count.  */
-    __uid_t st_uid;		/* User ID of the file's owner.	*/
-    __gid_t st_gid;		/* Group ID of the file's group.*/
-    __dev_t st_rdev;		/* Device number, if device.  */
-    __dev_t __pad1;
-    __off64_t st_size;		/* Size of file, in bytes.  */
-    __blksize_t st_blksize;	/* Optimal block size for I/O.  */
-    int __pad2;
-    __blkcnt64_t st_blocks;	/* Nr. 512-byte blocks allocated.  */
-#ifdef __USE_XOPEN2K8
-    /* Nanosecond resolution timestamps are stored in a format
-       equivalent to 'struct timespec'.  This is the type used
-       whenever possible but the Unix namespace rules do not allow the
-       identifier 'timespec' to appear in the <sys/stat.h> header.
-       Therefore we have to handle the use of this header in strictly
-       standard-compliant sources special.  */
-    struct timespec st_atim;		/* Time of last access.  */
-    struct timespec st_mtim;		/* Time of last modification.  */
-    struct timespec st_ctim;		/* Time of last status change.  */
-#else
-    __time_t st_atime;			/* Time of last access.  */
-    unsigned long int st_atimensec;	/* Nscecs of last access.  */
-    __time_t st_mtime;			/* Time of last modification.  */
-    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
-    __time_t st_ctime;			/* Time of last status change.  */
-    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
-#endif
-    int __glibc_reserved[2];
-  };
-#endif
-
-/* Tell code we have these members.  */
-#define	_STATBUF_ST_BLKSIZE
-#define _STATBUF_ST_RDEV
-/* Nanosecond resolution time values are supported.  */
-#define _STATBUF_ST_NSEC
-
-/* Encoding of the file mode.  */
-
-#define	__S_IFMT	0170000	/* These bits determine file type.  */
-
-/* File types.  */
-#define	__S_IFDIR	0040000	/* Directory.  */
-#define	__S_IFCHR	0020000	/* Character device.  */
-#define	__S_IFBLK	0060000	/* Block device.  */
-#define	__S_IFREG	0100000	/* Regular file.  */
-#define	__S_IFIFO	0010000	/* FIFO.  */
-#define	__S_IFLNK	0120000	/* Symbolic link.  */
-#define	__S_IFSOCK	0140000	/* Socket.  */
-
-/* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
-   they do it by enforcing the correct use of the macros.  */
-#define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
-#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
-#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
-
-/* Protection bits.  */
-
-#define	__S_ISUID	04000	/* Set user ID on execution.  */
-#define	__S_ISGID	02000	/* Set group ID on execution.  */
-#define	__S_ISVTX	01000	/* Save swapped text after use (sticky).  */
-#define	__S_IREAD	0400	/* Read by owner.  */
-#define	__S_IWRITE	0200	/* Write by owner.  */
-#define	__S_IEXEC	0100	/* Execute by owner.  */
-
-#ifdef __USE_ATFILE
-# define UTIME_NOW	((1l << 30) - 1l)
-# define UTIME_OMIT	((1l << 30) - 2l)
-#endif
-
-#endif /* bits/stat.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/statfs.h b/libc/include/nios2-linux-gnu/bits/statfs.h
deleted file mode 100644
index 8da970d4a9..0000000000
--- a/libc/include/nios2-linux-gnu/bits/statfs.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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_STATFS_H
-# error "Never include <bits/statfs.h> directly; use <sys/statfs.h> instead."
-#endif
-
-#include <endian.h>
-#include <bits/types.h>
-#include <bits/wordsize.h>
-
-/* 64-bit libc uses the kernel's 'struct statfs', accessed via the
-   statfs() syscall; 32-bit libc uses the kernel's 'struct statfs64'
-   and accesses it via the statfs64() syscall.  All the various
-   APIs offered by libc use the kernel shape for their struct statfs
-   structure; the only difference is that 32-bit programs not
-   using __USE_FILE_OFFSET64 only see the low 32 bits of some
-   of the fields (the __fsblkcnt_t and __fsfilcnt_t fields).  */
-
-#if defined __USE_FILE_OFFSET64
-# define __field64(type, type64, name) type64 name
-#elif __WORDSIZE == 64
-# define __field64(type, type64, name) type name
-#elif __BYTE_ORDER == __LITTLE_ENDIAN
-# define __field64(type, type64, name) \
-  type name __attribute__((__aligned__ (__alignof__ (type64)))); int __##name##_pad
-#else
-# define __field64(type, type64, name) \
-  int __##name##_pad __attribute__((__aligned__ (__alignof__ (type64)))); type name
-#endif
-
-struct statfs
-  {
-    __SWORD_TYPE f_type;
-    __SWORD_TYPE f_bsize;
-    __field64(__fsblkcnt_t, __fsblkcnt64_t, f_blocks);
-    __field64(__fsblkcnt_t, __fsblkcnt64_t, f_bfree);
-    __field64(__fsblkcnt_t, __fsblkcnt64_t, f_bavail);
-    __field64(__fsfilcnt_t, __fsfilcnt64_t, f_files);
-    __field64(__fsfilcnt_t, __fsfilcnt64_t, f_ffree);
-    __fsid_t f_fsid;
-    __SWORD_TYPE f_namelen;
-    __SWORD_TYPE f_frsize;
-    __SWORD_TYPE f_flags;
-    __SWORD_TYPE f_spare[4];
-  };
-
-#undef __field64
-
-#ifdef __USE_LARGEFILE64
-struct statfs64
-  {
-    __SWORD_TYPE f_type;
-    __SWORD_TYPE f_bsize;
-    __fsblkcnt64_t f_blocks;
-    __fsblkcnt64_t f_bfree;
-    __fsblkcnt64_t f_bavail;
-    __fsfilcnt64_t f_files;
-    __fsfilcnt64_t f_ffree;
-    __fsid_t f_fsid;
-    __SWORD_TYPE f_namelen;
-    __SWORD_TYPE f_frsize;
-    __SWORD_TYPE f_flags;
-    __SWORD_TYPE f_spare[4];
-  };
-#endif
-
-/* Tell code we have these members.  */
-#define _STATFS_F_NAMELEN
-#define _STATFS_F_FRSIZE
-#define _STATFS_F_FLAGS
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/typesizes.h b/libc/include/nios2-linux-gnu/bits/typesizes.h
deleted file mode 100644
index 8cfcacef57..0000000000
--- a/libc/include/nios2-linux-gnu/bits/typesizes.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/* bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
-   Copyright (C) 2011-2019 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
-   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 _BITS_TYPES_H
-# error "Never include <bits/typesizes.h> directly; use <sys/types.h> instead."
-#endif
-
-#ifndef	_BITS_TYPESIZES_H
-#define	_BITS_TYPESIZES_H	1
-
-/* See <bits/types.h> for the meaning of these macros.  This file exists so
-   that <bits/types.h> need not vary across different GNU platforms.  */
-
-#define __DEV_T_TYPE		__UQUAD_TYPE
-#define __UID_T_TYPE		__U32_TYPE
-#define __GID_T_TYPE		__U32_TYPE
-#define __INO_T_TYPE		__ULONGWORD_TYPE
-#define __INO64_T_TYPE		__UQUAD_TYPE
-#define __MODE_T_TYPE		__U32_TYPE
-#define __NLINK_T_TYPE		__U32_TYPE
-#define __OFF_T_TYPE		__SLONGWORD_TYPE
-#define __OFF64_T_TYPE		__SQUAD_TYPE
-#define __PID_T_TYPE		__S32_TYPE
-#define __RLIM_T_TYPE		__ULONGWORD_TYPE
-#define __RLIM64_T_TYPE		__UQUAD_TYPE
-#define	__BLKCNT_T_TYPE		__SLONGWORD_TYPE
-#define	__BLKCNT64_T_TYPE	__SQUAD_TYPE
-#define	__FSBLKCNT_T_TYPE	__ULONGWORD_TYPE
-#define	__FSBLKCNT64_T_TYPE	__UQUAD_TYPE
-#define	__FSFILCNT_T_TYPE	__ULONGWORD_TYPE
-#define	__FSFILCNT64_T_TYPE	__UQUAD_TYPE
-#define	__FSWORD_T_TYPE		__SWORD_TYPE
-#define	__ID_T_TYPE		__U32_TYPE
-#define __CLOCK_T_TYPE		__SLONGWORD_TYPE
-#define __TIME_T_TYPE		__SLONGWORD_TYPE
-#define __USECONDS_T_TYPE	__U32_TYPE
-#define __SUSECONDS_T_TYPE	__SLONGWORD_TYPE
-#define __DADDR_T_TYPE		__S32_TYPE
-#define __KEY_T_TYPE		__S32_TYPE
-#define __CLOCKID_T_TYPE	__S32_TYPE
-#define __TIMER_T_TYPE		void *
-#define __BLKSIZE_T_TYPE	__S32_TYPE
-#define __FSID_T_TYPE		struct { int __val[2]; }
-#define __SSIZE_T_TYPE		__SWORD_TYPE
-#define __SYSCALL_SLONG_TYPE	__SLONGWORD_TYPE
-#define __SYSCALL_ULONG_TYPE	__ULONGWORD_TYPE
-#define __CPU_MASK_TYPE 	__ULONGWORD_TYPE
-
-#ifdef __LP64__
-/* Tell the libc code that off_t and off64_t are actually the same type
-   for all ABI purposes, even if possibly expressed as different base types
-   for C type-checking purposes.  */
-# define __OFF_T_MATCHES_OFF64_T	1
-
-/* Same for ino_t and ino64_t.  */
-# define __INO_T_MATCHES_INO64_T	1
-
-/* And for __rlim_t and __rlim64_t.  */
-# define __RLIM_T_MATCHES_RLIM64_T	1
-#else
-# define __RLIM_T_MATCHES_RLIM64_T	0
-#endif
-
-/* Number of descriptors that can fit in an `fd_set'.  */
-#define	__FD_SETSIZE		1024
-
-
-#endif /* bits/typesizes.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/bits/wordsize.h b/libc/include/nios2-linux-gnu/bits/wordsize.h
deleted file mode 100644
index 3485a5acf2..0000000000
--- a/libc/include/nios2-linux-gnu/bits/wordsize.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* Copyright (C) 1999-2019 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/>.  */
-
-#define __WORDSIZE			32
-#define __WORDSIZE_TIME64_COMPAT32	0
-#define __WORDSIZE32_SIZE_ULONG		0
-#define __WORDSIZE32_PTRDIFF_LONG	0
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/fpu_control.h b/libc/include/nios2-linux-gnu/fpu_control.h
deleted file mode 100644
index 4537ff973e..0000000000
--- a/libc/include/nios2-linux-gnu/fpu_control.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/* FPU control word definitions.  Stub version.
-   Copyright (C) 1996-2019 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 _FPU_CONTROL_H
-#define _FPU_CONTROL_H
-
-#define _FPU_RESERVED 0xffffffff    /* These bits are reserved and not changed.  */
-
-/* The fdlibm code requires no interrupts for exceptions.  Don't
-   change the rounding mode, it would break long double I/O!  */
-#define _FPU_DEFAULT  0x00000000 /* Default value.  */
-
-/* Type of the control word.  */
-typedef unsigned int fpu_control_t;
-
-/* Macros for accessing the hardware control word.  */
-#define _FPU_GETCW(cw) (cw) = 0
-#define _FPU_SETCW(cw) (void) (cw)
-
-/* Default control word set at startup.  */
-extern fpu_control_t __fpu_control;
-
-#endif /* _FPU_CONTROL_H */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/gnu/lib-names.h b/libc/include/nios2-linux-gnu/gnu/lib-names.h
deleted file mode 100644
index 9e19101bff..0000000000
--- a/libc/include/nios2-linux-gnu/gnu/lib-names.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* This file is automatically generated.
-   It defines macros to allow user program to find the shared
-   library files which come as part of GNU libc.  */
-#ifndef __GNU_LIB_NAMES_H
-#define __GNU_LIB_NAMES_H	1
-
-#define LD_LINUX_NIOS2_SO               "ld-linux-nios2.so.1"
-#define LD_SO                           "ld-linux-nios2.so.1"
-#define LIBANL_SO                       "libanl.so.1"
-#define LIBBROKENLOCALE_SO              "libBrokenLocale.so.1"
-#define LIBCRYPT_SO                     "libcrypt.so.1"
-#define LIBC_SO                         "libc.so.6"
-#define LIBDL_SO                        "libdl.so.2"
-#define LIBGCC_S_SO                     "libgcc_s.so.1"
-#define LIBMVEC_SO                      "libmvec.so.1"
-#define LIBM_SO                         "libm.so.6"
-#define LIBNSL_SO                       "libnsl.so.1"
-#define LIBNSS_COMPAT_SO                "libnss_compat.so.2"
-#define LIBNSS_DB_SO                    "libnss_db.so.2"
-#define LIBNSS_DNS_SO                   "libnss_dns.so.2"
-#define LIBNSS_FILES_SO                 "libnss_files.so.2"
-#define LIBNSS_HESIOD_SO                "libnss_hesiod.so.2"
-#define LIBNSS_LDAP_SO                  "libnss_ldap.so.2"
-#define LIBNSS_NISPLUS_SO               "libnss_nisplus.so.2"
-#define LIBNSS_NIS_SO                   "libnss_nis.so.2"
-#define LIBNSS_TEST1_SO                 "libnss_test1.so.2"
-#define LIBNSS_TEST2_SO                 "libnss_test2.so.2"
-#define LIBPTHREAD_SO                   "libpthread.so.0"
-#define LIBRESOLV_SO                    "libresolv.so.2"
-#define LIBRT_SO                        "librt.so.1"
-#define LIBTHREAD_DB_SO                 "libthread_db.so.1"
-#define LIBUTIL_SO                      "libutil.so.1"
-
-#endif	/* gnu/lib-names.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/gnu/stubs.h b/libc/include/nios2-linux-gnu/gnu/stubs.h
deleted file mode 100644
index 90477e3afc..0000000000
--- a/libc/include/nios2-linux-gnu/gnu/stubs.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* This file is automatically generated.
-   It defines a symbol `__stub_FUNCTION' for each function
-   in the C library which is a stub, meaning it will fail
-   every time called, usually setting errno to ENOSYS.  */
-
-#ifdef _LIBC
- #error Applications may not define the macro _LIBC
-#endif
-
-#define __stub___compat_bdflush
-#define __stub___compat_create_module
-#define __stub___compat_get_kernel_syms
-#define __stub___compat_query_module
-#define __stub___compat_uselib
-#define __stub_chflags
-#define __stub_fattach
-#define __stub_fchflags
-#define __stub_fdetach
-#define __stub_feclearexcept
-#define __stub_fedisableexcept
-#define __stub_feenableexcept
-#define __stub_fegetenv
-#define __stub_fegetexcept
-#define __stub_fegetexceptflag
-#define __stub_fegetmode
-#define __stub_fegetround
-#define __stub_feholdexcept
-#define __stub_feraiseexcept
-#define __stub_fesetenv
-#define __stub_fesetexcept
-#define __stub_fesetexceptflag
-#define __stub_fesetmode
-#define __stub_fesetround
-#define __stub_fetestexcept
-#define __stub_feupdateenv
-#define __stub_getmsg
-#define __stub_getpmsg
-#define __stub_gtty
-#define __stub_lchmod
-#define __stub_putmsg
-#define __stub_putpmsg
-#define __stub_revoke
-#define __stub_setlogin
-#define __stub_sigreturn
-#define __stub_sstk
-#define __stub_stty
-#define __stub_sysctl
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/sys/cachectl.h b/libc/include/nios2-linux-gnu/sys/cachectl.h
deleted file mode 100644
index e97c951ed1..0000000000
--- a/libc/include/nios2-linux-gnu/sys/cachectl.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* cacheflush - flush contents of instruction and/or data cache.
-   Copyright (C) 2015-2019 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_CACHECTL_H
-#define _SYS_CACHECTL_H 1
-
-#include <features.h>
-
-__BEGIN_DECLS
-
-#ifdef __USE_MISC
-extern int cacheflush (void *__addr, const int __nbytes, const int __op) __THROW;
-#endif
-extern int _flush_cache (char *__addr, const int __nbytes, const int __op) __THROW;
-
-__END_DECLS
-
-#endif /* sys/cachectl.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/sys/ucontext.h b/libc/include/nios2-linux-gnu/sys/ucontext.h
deleted file mode 100644
index 2f46d5919f..0000000000
--- a/libc/include/nios2-linux-gnu/sys/ucontext.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* ucontext_t definition, Nios II version.
-   Copyright (C) 2015-2019 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/>.  */
-
-/* System V/Nios II ABI compliant context switching support.  */
-
-#ifndef _SYS_UCONTEXT_H
-#define _SYS_UCONTEXT_H	1
-
-#include <features.h>
-
-#include <bits/types/sigset_t.h>
-#include <bits/types/stack_t.h>
-
-
-/* These definitions must be in sync with the kernel.  */
-
-#ifdef __USE_MISC
-# define MCONTEXT_VERSION 2
-#endif
-
-#ifdef __USE_MISC
-# define __ctx(fld) fld
-#else
-# define __ctx(fld) __ ## fld
-#endif
-
-/* Context to describe whole processor state.  */
-typedef struct
-  {
-    int __ctx(version);
-    unsigned long __ctx(regs)[32];
-  } mcontext_t;
-
-/* Userlevel context.  */
-typedef struct ucontext_t
-  {
-    unsigned long __ctx(uc_flags);
-    struct ucontext_t *uc_link;
-    stack_t uc_stack;
-    mcontext_t uc_mcontext;
-    sigset_t uc_sigmask;
-  } ucontext_t;
-
-#undef __ctx
-
-#endif /* sys/ucontext.h */
\ No newline at end of file
diff --git a/libc/include/nios2-linux-gnu/sys/user.h b/libc/include/nios2-linux-gnu/sys/user.h
deleted file mode 100644
index 105c92aafe..0000000000
--- a/libc/include/nios2-linux-gnu/sys/user.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/* ptrace register data format definitions.
-   Copyright (C) 1998-2019 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_USER_H
-#define _SYS_USER_H	1
-
-/* The whole purpose of this file is for GDB and GDB only.  Don't read
-   too much into it.  Don't use it for anything other than GDB unless
-   you know what you are doing.  */
-
-struct user_fpregs
-{
-};
-
-struct user_regs
-{
-  unsigned long int uregs[49];
-};
-
-struct user
-{
-  struct user_regs regs;	/* General registers */
-  int u_fpvalid;		/* True if math co-processor being used. */
-
-  unsigned long int u_tsize;	/* Text segment size (pages). */
-  unsigned long int u_dsize;	/* Data segment size (pages). */
-  unsigned long int u_ssize;	/* Stack segment size (pages). */
-
-  unsigned long start_code;	/* Starting virtual address of text. */
-  unsigned long start_stack;	/* Starting virtual address of stack. */
-
-  long int signal;     		/* Signal that caused the core dump. */
-  int reserved;			/* No longer used */
-  struct user_regs *u_ar0;	/* help gdb to find the general registers. */
-
-  unsigned long magic;		/* uniquely identify a core file */
-  char u_comm[32];		/* User command that was responsible */
-  int u_debugreg[8];
-  struct user_fpregs u_fp;	/* Floating point registers */
-  struct user_fpregs *u_fp0;	/* help gdb to find the FP registers. */
-};
-
-#endif  /* sys/user.h */
\ No newline at end of file