Commit nios2 port to master.

44 files changed, 4790 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/nios2/Implies b/sysdeps/unix/sysv/linux/nios2/Implies
new file mode 100644
index 0000000000..4d0478bf8f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/Implies
@@ -0,0 +1,3 @@
+nios2/nptl
+unix/sysv/linux/generic/wordsize-32
+unix/sysv/linux/generic
diff --git a/sysdeps/unix/sysv/linux/nios2/Makefile b/sysdeps/unix/sysv/linux/nios2/Makefile
new file mode 100644
index 0000000000..d0af9ec559
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/Makefile
@@ -0,0 +1,13 @@
+ifeq ($(subdir),stdlib)
+gen-as-const-headers += ucontext_i.sym
+endif
+
+ifeq ($(subdir),misc)
+# MIPS/Tile-style cacheflush routine
+sysdep_headers += sys/cachectl.h
+sysdep_routines += cacheflush
+endif
+
+ifeq ($(subdir),nptl)
+libpthread-routines := $(filter-out pt-vfork,$(libpthread-routines))
+endif
diff --git a/sysdeps/unix/sysv/linux/nios2/Versions b/sysdeps/unix/sysv/linux/nios2/Versions
new file mode 100644
index 0000000000..e42c85f575
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/Versions
@@ -0,0 +1,6 @@
+libc {
+  GLIBC_2.21 {
+    _flush_cache;
+    cacheflush;
+  }
+}
diff --git a/sysdeps/unix/sysv/linux/nios2/arch-fork.h b/sysdeps/unix/sysv/linux/nios2/arch-fork.h
new file mode 100644
index 0000000000..23d497e5c9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/arch-fork.h
@@ -0,0 +1,33 @@
+/* ARCH_FORK definition for Linux fork implementation.  Nios II version.
+   Copyright (C) 2005-2015 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/>.  */
+
+#include <sched.h>
+#include <signal.h>
+#include <sysdep.h>
+#include <tls.h>
+
+/* Argument 1 - Clone flags.
+            2 - Child stack pointer.
+	    3 - Parent tid pointer.
+	    4 - Child tid pointer.
+	    5 - New TLS area pointer. */
+
+#define ARCH_FORK() \
+  INLINE_SYSCALL (clone, 5,						\
+		  CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD,	\
+                  NULL, NULL, &THREAD_SELF->tid, NULL)
diff --git a/sysdeps/unix/sysv/linux/nios2/bits/atomic.h b/sysdeps/unix/sysv/linux/nios2/bits/atomic.h
new file mode 100644
index 0000000000..2329f7463d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/bits/atomic.h
@@ -0,0 +1,92 @@
+/* Low-level functions for atomic operations. Nios II version.
+   Copyright (C) 2012-2015 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_ATOMIC_H
+#define _NIOS2_BITS_ATOMIC_H 1
+
+#include <stdint.h>
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+#define __HAVE_64B_ATOMICS 0
+#define USE_ATOMIC_COMPILER_BUILTINS 0
+
+#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval)	\
+  (abort (), (__typeof (*mem)) 0)
+#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval)	\
+  (abort (), (__typeof (*mem)) 0)
+#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval)	\
+  (abort (), (__typeof (*mem)) 0)
+
+#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval)	\
+  (abort (), 0)
+#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval)	\
+  (abort (), 0)
+#define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval)	\
+  (abort (), 0)
+
+#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval)	\
+  ({									\
+     register int r2 asm ("r2");					\
+     register int* r4 asm ("r4") = (int*)(mem);				\
+     register int r5 asm ("r5");					\
+     register int r6 asm ("r6") = (int)(newval);			\
+     int retval, orig_oldval = (int)(oldval);				\
+     long kernel_cmpxchg = 0x1004;					\
+     while (1)								\
+       {								\
+         r5 = *r4;							\
+	 if (r5 != orig_oldval)						\
+	   {								\
+	     retval = r5;						\
+	     break;							\
+	   }								\
+	 asm volatile ("callr %1\n"					\
+		       : "=r" (r2)					\
+		       : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \
+		       : "ra", "memory");				\
+	 if (!r2) { retval = orig_oldval; break; }			\
+       }								\
+     (__typeof (*(mem))) retval;					\
+  })
+
+#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval)	\
+  ({									\
+     register int r2 asm ("r2");					\
+     register int *r4 asm ("r4") = (int*)(mem);				\
+     register int r5 asm ("r5") = (int)(oldval);			\
+     register int r6 asm ("r6") = (int)(newval);			\
+     long kernel_cmpxchg = 0x1004;					\
+     asm volatile ("callr %1\n"						\
+		   : "=r" (r2)						\
+		   : "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \
+		   : "ra", "memory");					\
+     r2;								\
+  })
+
+#define atomic_full_barrier()  ({ asm volatile ("sync"); })
+
+#endif /* _NIOS2_BITS_ATOMIC_H */
diff --git a/sysdeps/unix/sysv/linux/nios2/bits/mman.h b/sysdeps/unix/sysv/linux/nios2/bits/mman.h
new file mode 100644
index 0000000000..23e92abd71
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/bits/mman.h
@@ -0,0 +1,42 @@
+/* Definitions for POSIX memory map interface.  Linux/Nios II version.
+
+   Copyright (C) 1997-2015 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_MMAN_H
+# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
+#endif
+
+/* The following definitions basically come from the kernel headers.
+   But the kernel header is not namespace clean.  */
+
+/* These are Linux-specific.  */
+#ifdef __USE_MISC
+# define MAP_GROWSDOWN	0x00100		/* Stack-like segment.  */
+# define MAP_DENYWRITE	0x00800		/* ETXTBSY */
+# define MAP_EXECUTABLE	0x01000		/* Mark it as an executable.  */
+# define MAP_LOCKED	0x02000		/* Lock the mapping.  */
+# define MAP_NORESERVE	0x04000		/* Don't check for reservations.  */
+# define MAP_POPULATE	0x08000		/* Populate (prefault) pagetables.  */
+# define MAP_NONBLOCK	0x10000		/* Do not block on IO.  */
+# define MAP_STACK	0x20000		/* Allocation is for a stack.  */
+# define MAP_HUGETLB	0x40000		/* Create huge page mapping.  */
+#endif
+
+/* Include generic Linux declarations.  */
+#include <bits/mman-linux.h>
diff --git a/sysdeps/unix/sysv/linux/nios2/c++-types.data b/sysdeps/unix/sysv/linux/nios2/c++-types.data
new file mode 100644
index 0000000000..303f4570c8
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/c++-types.data
@@ -0,0 +1,67 @@
+blkcnt64_t:x
+blkcnt_t:l
+blksize_t:i
+caddr_t:Pc
+clockid_t:i
+clock_t:l
+daddr_t:i
+dev_t:y
+fd_mask:l
+fsblkcnt64_t:y
+fsblkcnt_t:m
+fsfilcnt64_t:y
+fsfilcnt_t:m
+fsid_t:8__fsid_t
+gid_t:j
+id_t:j
+ino64_t:y
+ino_t:m
+int16_t:s
+int32_t:i
+int64_t:x
+int8_t:a
+intptr_t:i
+key_t:i
+loff_t:x
+mode_t:j
+nlink_t:j
+off64_t:x
+off_t:l
+pid_t:i
+pthread_attr_t:14pthread_attr_t
+pthread_barrier_t:17pthread_barrier_t
+pthread_barrierattr_t:21pthread_barrierattr_t
+pthread_cond_t:14pthread_cond_t
+pthread_condattr_t:18pthread_condattr_t
+pthread_key_t:j
+pthread_mutex_t:15pthread_mutex_t
+pthread_mutexattr_t:19pthread_mutexattr_t
+pthread_once_t:i
+pthread_rwlock_t:16pthread_rwlock_t
+pthread_rwlockattr_t:20pthread_rwlockattr_t
+pthread_spinlock_t:i
+pthread_t:m
+quad_t:x
+register_t:i
+rlim64_t:y
+rlim_t:m
+sigset_t:10__sigset_t
+size_t:j
+socklen_t:j
+ssize_t:i
+suseconds_t:l
+time_t:l
+u_char:h
+uid_t:j
+uint:j
+u_int:j
+u_int16_t:t
+u_int32_t:j
+u_int64_t:y
+u_int8_t:h
+ulong:m
+u_long:m
+u_quad_t:y
+useconds_t:j
+ushort:t
+u_short:t
diff --git a/sysdeps/unix/sysv/linux/nios2/cacheflush.c b/sysdeps/unix/sysv/linux/nios2/cacheflush.c
new file mode 100644
index 0000000000..b2f989d530
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/cacheflush.c
@@ -0,0 +1,29 @@
+/* cacheflush system call for Nios II Linux.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+#include <stddef.h>
+#include <unistd.h>
+
+/* Flush cache(s).  */
+int
+_flush_cache (char *addr, const int nbytes, const int op)
+{
+  return INLINE_SYSCALL (cacheflush, 3, addr, nbytes, op);
+}
+weak_alias (_flush_cache, cacheflush)
diff --git a/sysdeps/unix/sysv/linux/nios2/clone.S b/sysdeps/unix/sysv/linux/nios2/clone.S
new file mode 100644
index 0000000000..9fab461803
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/clone.S
@@ -0,0 +1,107 @@
+/* clone() implementation for Nios II.
+   Copyright (C) 2008-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andrew Jenner <andrew@codesourcery.com>, 2008.
+
+   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/>.  */
+
+/* clone() is even more special than fork() as it mucks with stacks
+   and invokes a function in the right context after its all over.  */
+
+#include <sysdep.h>
+#define _ERRNO_H	1
+#include <bits/errno.h>
+#include <tcb-offsets.h>
+
+#define CLONE_VM      0x00000100
+#define CLONE_THREAD  0x00010000
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
+	     void *parent_tidptr, void *tls, void *child_tidptr) */
+
+	.text
+ENTRY(__clone)
+	/* Sanity check arguments.  */
+	movi	r2, EINVAL
+	/* No NULL function pointers.  */
+	beq	r4, zero, SYSCALL_ERROR_LABEL
+	/* No NULL stack pointers.  */
+	beq	r5, zero, SYSCALL_ERROR_LABEL
+
+	subi	r5, r5, 8	/* Reserve argument save space.  */
+	stw	r4, 4(r5)	/* Save function pointer.  */
+	stw	r7, 0(r5)	/* Save argument pointer.  */
+
+	/* Load arguments.  */
+	mov	r4, r6
+	ldw	r6, 0(sp)
+	ldw	r7, 8(sp)
+	ldw	r8, 4(sp)
+
+	/* Do the system call.  */
+	movi	r2, SYS_ify (clone)
+
+	/* End FDE now, because in the child the unwind info will be
+	   wrong.  */
+	cfi_endproc
+	trap
+
+	/* Check for errors.  */
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+	/* See if we're on the newly created thread.  */
+	beq	r2, zero, thread_start
+	/* Successful return from the parent */
+	ret
+
+thread_start:
+	cfi_startproc
+	cfi_undefined (ra)
+
+	/* We expect the argument registers to be preserved across system
+	   calls and across task cloning, so flags should be in r4 here.  */
+	andhi	r2, r4, %hi(CLONE_THREAD)
+	bne	r2, zero, 2f
+	andi	r3, r4, CLONE_VM
+	movi	r2, -1
+	bne	r3, zero, 3f
+        DO_CALL (getpid, 0)
+3:
+	stw	r2, PID_OFFSET(r23)
+	stw	r2, TID_OFFSET(r23)
+2:
+	ldw	r5, 4(sp)	/* Function pointer.  */
+	ldw	r4, 0(sp)	/* Argument pointer.  */
+	addi	sp, sp, 8
+
+        /* Call the user's function.  */
+	callr	r5
+
+	/* _exit with the result.  */
+	mov	r4, r2
+#ifdef PIC
+	nextpc	r22
+1:	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	add	r22, r22, r8
+	ldw	r8, %call(HIDDEN_JUMPTARGET(_exit))(r22)
+	jmp	r8
+#else
+	jmpi	_exit
+#endif
+	cfi_endproc
+
+	cfi_startproc
+PSEUDO_END (__clone)
+weak_alias (__clone, clone)
diff --git a/sysdeps/unix/sysv/linux/nios2/configure b/sysdeps/unix/sysv/linux/nios2/configure
new file mode 100644
index 0000000000..d5d117b3d2
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/configure
@@ -0,0 +1,4 @@
+# This file is generated from configure.in by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/unix/sysv/linux/nios2.
+
+arch_minimum_kernel=3.19.0
diff --git a/sysdeps/unix/sysv/linux/nios2/configure.ac b/sysdeps/unix/sysv/linux/nios2/configure.ac
new file mode 100644
index 0000000000..a8ccc17ffe
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/configure.ac
@@ -0,0 +1,4 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/unix/sysv/linux/nios2.
+
+arch_minimum_kernel=3.19.0
diff --git a/sysdeps/unix/sysv/linux/nios2/getcontext.S b/sysdeps/unix/sysv/linux/nios2/getcontext.S
new file mode 100644
index 0000000000..ffbd91f72a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/getcontext.S
@@ -0,0 +1,66 @@
+/* Save current context.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+#include "ucontext_i.h"
+
+/* int getcontext (ucontext_t *ucp)
+
+   Returns 0 on success -1 and errno on failure.
+ */
+	.text
+ENTRY(__getcontext)
+	stw	r16, (UCONTEXT_MCONTEXT + 16*4)(r4)
+	stw	r17, (UCONTEXT_MCONTEXT + 17*4)(r4)
+	stw	r18, (UCONTEXT_MCONTEXT + 18*4)(r4)
+	stw	r19, (UCONTEXT_MCONTEXT + 19*4)(r4)
+	stw	r20, (UCONTEXT_MCONTEXT + 20*4)(r4)
+	stw	r21, (UCONTEXT_MCONTEXT + 21*4)(r4)
+	stw	r22, (UCONTEXT_MCONTEXT + 22*4)(r4)
+	stw	ra,  (UCONTEXT_MCONTEXT + 24*4)(r4)
+	stw	fp,  (UCONTEXT_MCONTEXT + 25*4)(r4)
+	stw	gp,  (UCONTEXT_MCONTEXT + 26*4)(r4)
+	/* Store return address at place for EA.  */
+	stw	ra,  (UCONTEXT_MCONTEXT + 28*4)(r4)
+	stw	sp,  (UCONTEXT_MCONTEXT + 29*4)(r4)
+	/* Store zero for return success.  */
+	stw	zero, (UCONTEXT_MCONTEXT + 2*4)(r4)
+
+	/* Store value "1" at uc_flags to recognize as getcontext created.  */
+	movi	r2, 1
+	stw	r2, UCONTEXT_FLAGS(r4)
+
+	/* Store MCONTEXT_VERSION at first word of mcontext_t.  */
+	movi	r2, MCONTEXT_VERSION
+	stw	r2, UCONTEXT_MCONTEXT(r4)
+
+	/* Get signal mask.  */
+	/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
+	movi	r7, _NSIG8
+	addi	r6, r4, UCONTEXT_SIGMASK
+	mov	r5, zero
+	movi	r4, SIG_BLOCK
+	movi	r2, SYS_ify (rt_sigprocmask)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+
+	mov	r2, zero
+	ret
+
+PSEUDO_END(__getcontext)
+weak_alias(__getcontext, getcontext)
diff --git a/sysdeps/unix/sysv/linux/nios2/kernel-features.h b/sysdeps/unix/sysv/linux/nios2/kernel-features.h
new file mode 100644
index 0000000000..f4e96a0e27
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/kernel-features.h
@@ -0,0 +1,31 @@
+/* Set flags signalling availability of kernel features based on given
+   kernel version number.
+
+   Copyright (C) 2009-2015 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/>.  */
+
+#include <linux/version.h>
+
+/* The minimum supported kernel version for Nios II is 3.19.0,
+   guaranteeing many kernel features.  */
+
+#define __ASSUME_ACCEPT4_SYSCALL        1
+#define __ASSUME_RECVMMSG_SYSCALL       1
+#define __ASSUME_SENDMMSG_SYSCALL       1
+
+#include_next <kernel-features.h>
diff --git a/sysdeps/unix/sysv/linux/nios2/kernel_rt_sigframe.h b/sysdeps/unix/sysv/linux/nios2/kernel_rt_sigframe.h
new file mode 100644
index 0000000000..189edad792
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/kernel_rt_sigframe.h
@@ -0,0 +1,26 @@
+/* Linux kernel struct rt_sigframe declaration for Nios II.
+   Copyright (C) 2015 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/>.  */
+
+/* This structure must have the same shape as the Linux kernel
+   equivalent.  */
+
+struct kernel_rt_sigframe
+{
+  siginfo_t info;
+  struct ucontext uc;
+};
diff --git a/sysdeps/unix/sysv/linux/nios2/ld.abilist b/sysdeps/unix/sysv/linux/nios2/ld.abilist
new file mode 100644
index 0000000000..b8d80dc101
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/ld.abilist
@@ -0,0 +1,12 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ __libc_memalign F
+ __libc_stack_end D 0x4
+ __stack_chk_guard D 0x4
+ __tls_get_addr F
+ _dl_mcount F
+ _r_debug D 0x14
+ calloc F
+ free F
+ malloc F
+ realloc F
diff --git a/sysdeps/unix/sysv/linux/nios2/libBrokenLocale.abilist b/sysdeps/unix/sysv/linux/nios2/libBrokenLocale.abilist
new file mode 100644
index 0000000000..0a63b27f53
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libBrokenLocale.abilist
@@ -0,0 +1,3 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ __ctype_get_mb_cur_max F
diff --git a/sysdeps/unix/sysv/linux/nios2/libanl.abilist b/sysdeps/unix/sysv/linux/nios2/libanl.abilist
new file mode 100644
index 0000000000..589be5e2db
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libanl.abilist
@@ -0,0 +1,6 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ gai_cancel F
+ gai_error F
+ gai_suspend F
+ getaddrinfo_a F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
new file mode 100644
index 0000000000..0703418082
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -0,0 +1,2123 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ _Exit F
+ _IO_2_1_stderr_ D 0x98
+ _IO_2_1_stdin_ D 0x98
+ _IO_2_1_stdout_ D 0x98
+ _IO_adjust_column F
+ _IO_adjust_wcolumn F
+ _IO_default_doallocate F
+ _IO_default_finish F
+ _IO_default_pbackfail F
+ _IO_default_uflow F
+ _IO_default_xsgetn F
+ _IO_default_xsputn F
+ _IO_do_write F
+ _IO_doallocbuf F
+ _IO_fclose F
+ _IO_fdopen F
+ _IO_feof F
+ _IO_ferror F
+ _IO_fflush F
+ _IO_fgetpos F
+ _IO_fgetpos64 F
+ _IO_fgets F
+ _IO_file_attach F
+ _IO_file_close F
+ _IO_file_close_it F
+ _IO_file_doallocate F
+ _IO_file_finish F
+ _IO_file_fopen F
+ _IO_file_init F
+ _IO_file_jumps D 0x54
+ _IO_file_open F
+ _IO_file_overflow F
+ _IO_file_read F
+ _IO_file_seek F
+ _IO_file_seekoff F
+ _IO_file_setbuf F
+ _IO_file_stat F
+ _IO_file_sync F
+ _IO_file_underflow F
+ _IO_file_write F
+ _IO_file_xsputn F
+ _IO_flockfile F
+ _IO_flush_all F
+ _IO_flush_all_linebuffered F
+ _IO_fopen F
+ _IO_fprintf F
+ _IO_fputs F
+ _IO_fread F
+ _IO_free_backup_area F
+ _IO_free_wbackup_area F
+ _IO_fsetpos F
+ _IO_fsetpos64 F
+ _IO_ftell F
+ _IO_ftrylockfile F
+ _IO_funlockfile F
+ _IO_fwrite F
+ _IO_getc F
+ _IO_getline F
+ _IO_getline_info F
+ _IO_gets F
+ _IO_init F
+ _IO_init_marker F
+ _IO_init_wmarker F
+ _IO_iter_begin F
+ _IO_iter_end F
+ _IO_iter_file F
+ _IO_iter_next F
+ _IO_least_wmarker F
+ _IO_link_in F
+ _IO_list_all D 0x4
+ _IO_list_lock F
+ _IO_list_resetlock F
+ _IO_list_unlock F
+ _IO_marker_delta F
+ _IO_marker_difference F
+ _IO_padn F
+ _IO_peekc_locked F
+ _IO_popen F
+ _IO_printf F
+ _IO_proc_close F
+ _IO_proc_open F
+ _IO_putc F
+ _IO_puts F
+ _IO_remove_marker F
+ _IO_seekmark F
+ _IO_seekoff F
+ _IO_seekpos F
+ _IO_seekwmark F
+ _IO_setb F
+ _IO_setbuffer F
+ _IO_setvbuf F
+ _IO_sgetn F
+ _IO_sprintf F
+ _IO_sputbackc F
+ _IO_sputbackwc F
+ _IO_sscanf F
+ _IO_str_init_readonly F
+ _IO_str_init_static F
+ _IO_str_overflow F
+ _IO_str_pbackfail F
+ _IO_str_seekoff F
+ _IO_str_underflow F
+ _IO_sungetc F
+ _IO_sungetwc F
+ _IO_switch_to_get_mode F
+ _IO_switch_to_main_wget_area F
+ _IO_switch_to_wbackup_area F
+ _IO_switch_to_wget_mode F
+ _IO_un_link F
+ _IO_ungetc F
+ _IO_unsave_markers F
+ _IO_unsave_wmarkers F
+ _IO_vfprintf F
+ _IO_vfscanf F
+ _IO_vsprintf F
+ _IO_wdefault_doallocate F
+ _IO_wdefault_finish F
+ _IO_wdefault_pbackfail F
+ _IO_wdefault_uflow F
+ _IO_wdefault_xsgetn F
+ _IO_wdefault_xsputn F
+ _IO_wdo_write F
+ _IO_wdoallocbuf F
+ _IO_wfile_jumps D 0x54
+ _IO_wfile_overflow F
+ _IO_wfile_seekoff F
+ _IO_wfile_sync F
+ _IO_wfile_underflow F
+ _IO_wfile_xsputn F
+ _IO_wmarker_delta F
+ _IO_wsetb F
+ ___brk_addr D 0x4
+ __adddf3 F
+ __addsf3 F
+ __adjtimex F
+ __after_morecore_hook D 0x4
+ __argz_count F
+ __argz_next F
+ __argz_stringify F
+ __asprintf F
+ __asprintf_chk F
+ __assert F
+ __assert_fail F
+ __assert_perror_fail F
+ __backtrace F
+ __backtrace_symbols F
+ __backtrace_symbols_fd F
+ __bsd_getpgrp F
+ __bzero F
+ __check_rhosts_file D 0x4
+ __chk_fail F
+ __clone F
+ __close F
+ __cmsg_nxthdr F
+ __confstr_chk F
+ __connect F
+ __ctype_b_loc F
+ __ctype_get_mb_cur_max F
+ __ctype_tolower_loc F
+ __ctype_toupper_loc F
+ __curbrk D 0x4
+ __cxa_at_quick_exit F
+ __cxa_atexit F
+ __cxa_finalize F
+ __cxa_thread_atexit_impl F
+ __cyg_profile_func_enter F
+ __cyg_profile_func_exit F
+ __daylight D 0x4
+ __dcgettext F
+ __default_morecore F
+ __dgettext F
+ __divdf3 F
+ __divsf3 F
+ __dprintf_chk F
+ __dup2 F
+ __duplocale F
+ __endmntent F
+ __environ D 0x4
+ __eqdf2 F
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+ __errno_location F
+ __extendsfdf2 F
+ __fbufsize F
+ __fcntl F
+ __fdelt_chk F
+ __fdelt_warn F
+ __ffs F
+ __fgets_chk F
+ __fgets_unlocked_chk F
+ __fgetws_chk F
+ __fgetws_unlocked_chk F
+ __finite F
+ __finitef F
+ __finitel F
+ __fixdfdi F
+ __fixdfsi F
+ __fixsfdi F
+ __fixsfsi F
+ __fixunsdfdi F
+ __fixunsdfsi F
+ __fixunssfdi F
+ __fixunssfsi F
+ __flbf F
+ __floatdidf F
+ __floatdisf F
+ __floatsidf F
+ __floatsisf F
+ __floatundidf F
+ __floatundisf F
+ __floatunsidf F
+ __floatunsisf F
+ __fork F
+ __fpending F
+ __fprintf_chk F
+ __fpu_control D 0x4
+ __fpurge F
+ __fread_chk F
+ __fread_unlocked_chk F
+ __freadable F
+ __freading F
+ __free_hook D 0x4
+ __freelocale F
+ __fsetlocking F
+ __fwprintf_chk F
+ __fwritable F
+ __fwriting F
+ __fxstat F
+ __fxstat64 F
+ __fxstatat F
+ __fxstatat64 F
+ __gedf2 F
+ __gesf2 F
+ __getauxval F
+ __getcwd_chk F
+ __getdelim F
+ __getdomainname_chk F
+ __getgroups_chk F
+ __gethostname_chk F
+ __getlogin_r_chk F
+ __getmntent_r F
+ __getpagesize F
+ __getpgid F
+ __getpid F
+ __gets_chk F
+ __gettimeofday F
+ __getwd_chk F
+ __gmtime_r F
+ __gtdf2 F
+ __gtsf2 F
+ __h_errno_location F
+ __isalnum_l F
+ __isalpha_l F
+ __isascii_l F
+ __isblank_l F
+ __iscntrl_l F
+ __isctype F
+ __isdigit_l F
+ __isgraph_l F
+ __isinf F
+ __isinff F
+ __isinfl F
+ __islower_l F
+ __isnan F
+ __isnanf F
+ __isnanl F
+ __isoc99_fscanf F
+ __isoc99_fwscanf F
+ __isoc99_scanf F
+ __isoc99_sscanf F
+ __isoc99_swscanf F
+ __isoc99_vfscanf F
+ __isoc99_vfwscanf F
+ __isoc99_vscanf F
+ __isoc99_vsscanf F
+ __isoc99_vswscanf F
+ __isoc99_vwscanf F
+ __isoc99_wscanf F
+ __isprint_l F
+ __ispunct_l F
+ __isspace_l F
+ __isupper_l F
+ __iswalnum_l F
+ __iswalpha_l F
+ __iswblank_l F
+ __iswcntrl_l F
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+ __iswdigit_l F
+ __iswgraph_l F
+ __iswlower_l F
+ __iswprint_l F
+ __iswpunct_l F
+ __iswspace_l F
+ __iswupper_l F
+ __iswxdigit_l F
+ __isxdigit_l F
+ __ivaliduser F
+ __key_decryptsession_pk_LOCAL D 0x4
+ __key_encryptsession_pk_LOCAL D 0x4
+ __key_gendes_LOCAL D 0x4
+ __ledf2 F
+ __lesf2 F
+ __libc_allocate_rtsig F
+ __libc_calloc F
+ __libc_current_sigrtmax F
+ __libc_current_sigrtmin F
+ __libc_free F
+ __libc_freeres F
+ __libc_init_first F
+ __libc_mallinfo F
+ __libc_malloc F
+ __libc_mallopt F
+ __libc_memalign F
+ __libc_pvalloc F
+ __libc_realloc F
+ __libc_sa_len F
+ __libc_start_main F
+ __libc_valloc F
+ __longjmp_chk F
+ __lseek F
+ __ltdf2 F
+ __ltsf2 F
+ __lxstat F
+ __lxstat64 F
+ __malloc_hook D 0x4
+ __malloc_initialize_hook D 0x4
+ __mbrlen F
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+ __mbsnrtowcs_chk F
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+ __mbstowcs_chk F
+ __memalign_hook D 0x4
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+ __morecore D 0x4
+ __muldf3 F
+ __mulsf3 F
+ __nanosleep F
+ __nedf2 F
+ __negdf2 F
+ __negsf2 F
+ __nesf2 F
+ __newlocale F
+ __nl_langinfo_l F
+ __nss_configure_lookup F
+ __nss_database_lookup F
+ __nss_group_lookup F
+ __nss_hostname_digits_dots F
+ __nss_hosts_lookup F
+ __nss_next F
+ __nss_passwd_lookup F
+ __obstack_printf_chk F
+ __obstack_vprintf_chk F
+ __open F
+ __open64 F
+ __open64_2 F
+ __open_2 F
+ __openat64_2 F
+ __openat_2 F
+ __overflow F
+ __pipe F
+ __poll F
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+ __posix_getopt F
+ __ppoll_chk F
+ __pread64 F
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+ __pread_chk F
+ __printf_chk F
+ __printf_fp F
+ __profile_frequency F
+ __progname D 0x4
+ __progname_full D 0x4
+ __ptsname_r_chk F
+ __pwrite64 F
+ __rawmemchr F
+ __rcmd_errstr D 0x4
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+ __readlink_chk F
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+ __realloc_hook D 0x4
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+ __register_atfork F
+ __res_init F
+ __res_nclose F
+ __res_ninit F
+ __res_randomid F
+ __res_state F
+ __rpc_thread_createerr F
+ __rpc_thread_svc_fdset F
+ __rpc_thread_svc_max_pollfd F
+ __rpc_thread_svc_pollfd F
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+ __timezone D 0x4
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+ strtoul_l F
+ strtoull F
+ strtoull_l F
+ strtoumax F
+ strtouq F
+ strverscmp F
+ strxfrm F
+ strxfrm_l F
+ stty F
+ svc_exit F
+ svc_fdset D 0x80
+ svc_getreq F
+ svc_getreq_common F
+ svc_getreq_poll F
+ svc_getreqset F
+ svc_max_pollfd D 0x4
+ svc_pollfd D 0x4
+ svc_register F
+ svc_run F
+ svc_sendreply F
+ svc_unregister F
+ svcauthdes_stats D 0xc
+ svcerr_auth F
+ svcerr_decode F
+ svcerr_noproc F
+ svcerr_noprog F
+ svcerr_progvers F
+ svcerr_systemerr F
+ svcerr_weakauth F
+ svcfd_create F
+ svcraw_create F
+ svctcp_create F
+ svcudp_bufcreate F
+ svcudp_create F
+ svcudp_enablecache F
+ svcunix_create F
+ svcunixfd_create F
+ swab F
+ swapcontext F
+ swapoff F
+ swapon F
+ swprintf F
+ swscanf F
+ symlink F
+ symlinkat F
+ sync F
+ sync_file_range F
+ syncfs F
+ sys_errlist D 0x21c
+ sys_nerr D 0x4
+ sys_sigabbrev D 0x104
+ sys_siglist D 0x104
+ syscall F
+ sysconf F
+ sysctl F
+ sysinfo F
+ syslog F
+ system F
+ sysv_signal F
+ tcdrain F
+ tcflow F
+ tcflush F
+ tcgetattr F
+ tcgetpgrp F
+ tcgetsid F
+ tcsendbreak F
+ tcsetattr F
+ tcsetpgrp F
+ tdelete F
+ tdestroy F
+ tee F
+ telldir F
+ tempnam F
+ textdomain F
+ tfind F
+ time F
+ timegm F
+ timelocal F
+ timerfd_create F
+ timerfd_gettime F
+ timerfd_settime F
+ times F
+ timespec_get F
+ timezone D 0x4
+ tmpfile F
+ tmpfile64 F
+ tmpnam F
+ tmpnam_r F
+ toascii F
+ tolower F
+ tolower_l F
+ toupper F
+ toupper_l F
+ towctrans F
+ towctrans_l F
+ towlower F
+ towlower_l F
+ towupper F
+ towupper_l F
+ tr_break F
+ truncate F
+ truncate64 F
+ tsearch F
+ ttyname F
+ ttyname_r F
+ ttyslot F
+ twalk F
+ tzname D 0x8
+ tzset F
+ ualarm F
+ ulckpwdf F
+ ulimit F
+ umask F
+ umount F
+ umount2 F
+ uname F
+ ungetc F
+ ungetwc F
+ unlink F
+ unlinkat F
+ unlockpt F
+ unsetenv F
+ unshare F
+ updwtmp F
+ updwtmpx F
+ uselib F
+ uselocale F
+ user2netname F
+ usleep F
+ ustat F
+ utime F
+ utimensat F
+ utimes F
+ utmpname F
+ utmpxname F
+ valloc F
+ vasprintf F
+ vdprintf F
+ verr F
+ verrx F
+ versionsort F
+ versionsort64 F
+ vfork F
+ vfprintf F
+ vfscanf F
+ vfwprintf F
+ vfwscanf F
+ vhangup F
+ vlimit F
+ vmsplice F
+ vprintf F
+ vscanf F
+ vsnprintf F
+ vsprintf F
+ vsscanf F
+ vswprintf F
+ vswscanf F
+ vsyslog F
+ vtimes F
+ vwarn F
+ vwarnx F
+ vwprintf F
+ vwscanf F
+ wait F
+ wait3 F
+ wait4 F
+ waitid F
+ waitpid F
+ warn F
+ warnx F
+ wcpcpy F
+ wcpncpy F
+ wcrtomb F
+ wcscasecmp F
+ wcscasecmp_l F
+ wcscat F
+ wcschr F
+ wcschrnul F
+ wcscmp F
+ wcscoll F
+ wcscoll_l F
+ wcscpy F
+ wcscspn F
+ wcsdup F
+ wcsftime F
+ wcsftime_l F
+ wcslen F
+ wcsncasecmp F
+ wcsncasecmp_l F
+ wcsncat F
+ wcsncmp F
+ wcsncpy F
+ wcsnlen F
+ wcsnrtombs F
+ wcspbrk F
+ wcsrchr F
+ wcsrtombs F
+ wcsspn F
+ wcsstr F
+ wcstod F
+ wcstod_l F
+ wcstof F
+ wcstof_l F
+ wcstoimax F
+ wcstok F
+ wcstol F
+ wcstol_l F
+ wcstold F
+ wcstold_l F
+ wcstoll F
+ wcstoll_l F
+ wcstombs F
+ wcstoq F
+ wcstoul F
+ wcstoul_l F
+ wcstoull F
+ wcstoull_l F
+ wcstoumax F
+ wcstouq F
+ wcswcs F
+ wcswidth F
+ wcsxfrm F
+ wcsxfrm_l F
+ wctob F
+ wctomb F
+ wctrans F
+ wctrans_l F
+ wctype F
+ wctype_l F
+ wcwidth F
+ wmemchr F
+ wmemcmp F
+ wmemcpy F
+ wmemmove F
+ wmempcpy F
+ wmemset F
+ wordexp F
+ wordfree F
+ wprintf F
+ write F
+ writev F
+ wscanf F
+ xdecrypt F
+ xdr_accepted_reply F
+ xdr_array F
+ xdr_authdes_cred F
+ xdr_authdes_verf F
+ xdr_authunix_parms F
+ xdr_bool F
+ xdr_bytes F
+ xdr_callhdr F
+ xdr_callmsg F
+ xdr_char F
+ xdr_cryptkeyarg F
+ xdr_cryptkeyarg2 F
+ xdr_cryptkeyres F
+ xdr_des_block F
+ xdr_double F
+ xdr_enum F
+ xdr_float F
+ xdr_free F
+ xdr_getcredres F
+ xdr_hyper F
+ xdr_int F
+ xdr_int16_t F
+ xdr_int32_t F
+ xdr_int64_t F
+ xdr_int8_t F
+ xdr_key_netstarg F
+ xdr_key_netstres F
+ xdr_keybuf F
+ xdr_keystatus F
+ xdr_long F
+ xdr_longlong_t F
+ xdr_netnamestr F
+ xdr_netobj F
+ xdr_opaque F
+ xdr_opaque_auth F
+ xdr_pmap F
+ xdr_pmaplist F
+ xdr_pointer F
+ xdr_quad_t F
+ xdr_reference F
+ xdr_rejected_reply F
+ xdr_replymsg F
+ xdr_rmtcall_args F
+ xdr_rmtcallres F
+ xdr_short F
+ xdr_sizeof F
+ xdr_string F
+ xdr_u_char F
+ xdr_u_hyper F
+ xdr_u_int F
+ xdr_u_long F
+ xdr_u_longlong_t F
+ xdr_u_quad_t F
+ xdr_u_short F
+ xdr_uint16_t F
+ xdr_uint32_t F
+ xdr_uint64_t F
+ xdr_uint8_t F
+ xdr_union F
+ xdr_unixcred F
+ xdr_vector F
+ xdr_void F
+ xdr_wrapstring F
+ xdrmem_create F
+ xdrrec_create F
+ xdrrec_endofrecord F
+ xdrrec_eof F
+ xdrrec_skiprecord F
+ xdrstdio_create F
+ xencrypt F
+ xprt_register F
+ xprt_unregister F
diff --git a/sysdeps/unix/sysv/linux/nios2/libcrypt.abilist b/sysdeps/unix/sysv/linux/nios2/libcrypt.abilist
new file mode 100644
index 0000000000..dd5a89c3e4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libcrypt.abilist
@@ -0,0 +1,9 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ crypt F
+ crypt_r F
+ encrypt F
+ encrypt_r F
+ fcrypt F
+ setkey F
+ setkey_r F
diff --git a/sysdeps/unix/sysv/linux/nios2/libdl.abilist b/sysdeps/unix/sysv/linux/nios2/libdl.abilist
new file mode 100644
index 0000000000..9220fec15c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libdl.abilist
@@ -0,0 +1,11 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ dladdr F
+ dladdr1 F
+ dlclose F
+ dlerror F
+ dlinfo F
+ dlmopen F
+ dlopen F
+ dlsym F
+ dlvsym F
diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist
new file mode 100644
index 0000000000..3fcb2efc46
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist
@@ -0,0 +1,370 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ _LIB_VERSION D 0x4
+ __acos_finite F
+ __acosf_finite F
+ __acosh_finite F
+ __acoshf_finite F
+ __asin_finite F
+ __asinf_finite F
+ __atan2_finite F
+ __atan2f_finite F
+ __atanh_finite F
+ __atanhf_finite F
+ __clog10 F
+ __clog10f F
+ __clog10l F
+ __cosh_finite F
+ __coshf_finite F
+ __exp10_finite F
+ __exp10f_finite F
+ __exp2_finite F
+ __exp2f_finite F
+ __exp_finite F
+ __expf_finite F
+ __finite F
+ __finitef F
+ __finitel F
+ __fmod_finite F
+ __fmodf_finite F
+ __fpclassify F
+ __fpclassifyf F
+ __gamma_r_finite F
+ __gammaf_r_finite F
+ __hypot_finite F
+ __hypotf_finite F
+ __issignaling F
+ __issignalingf F
+ __j0_finite F
+ __j0f_finite F
+ __j1_finite F
+ __j1f_finite F
+ __jn_finite F
+ __jnf_finite F
+ __lgamma_r_finite F
+ __lgammaf_r_finite F
+ __log10_finite F
+ __log10f_finite F
+ __log2_finite F
+ __log2f_finite F
+ __log_finite F
+ __logf_finite F
+ __pow_finite F
+ __powf_finite F
+ __remainder_finite F
+ __remainderf_finite F
+ __scalb_finite F
+ __scalbf_finite F
+ __signbit F
+ __signbitf F
+ __sinh_finite F
+ __sinhf_finite F
+ __sqrt_finite F
+ __sqrtf_finite F
+ __y0_finite F
+ __y0f_finite F
+ __y1_finite F
+ __y1f_finite F
+ __yn_finite F
+ __ynf_finite F
+ acos F
+ acosf F
+ acosh F
+ acoshf F
+ acoshl F
+ acosl F
+ asin F
+ asinf F
+ asinh F
+ asinhf F
+ asinhl F
+ asinl F
+ atan F
+ atan2 F
+ atan2f F
+ atan2l F
+ atanf F
+ atanh F
+ atanhf F
+ atanhl F
+ atanl F
+ cabs F
+ cabsf F
+ cabsl F
+ cacos F
+ cacosf F
+ cacosh F
+ cacoshf F
+ cacoshl F
+ cacosl F
+ carg F
+ cargf F
+ cargl F
+ casin F
+ casinf F
+ casinh F
+ casinhf F
+ casinhl F
+ casinl F
+ catan F
+ catanf F
+ catanh F
+ catanhf F
+ catanhl F
+ catanl F
+ cbrt F
+ cbrtf F
+ cbrtl F
+ ccos F
+ ccosf F
+ ccosh F
+ ccoshf F
+ ccoshl F
+ ccosl F
+ ceil F
+ ceilf F
+ ceill F
+ cexp F
+ cexpf F
+ cexpl F
+ cimag F
+ cimagf F
+ cimagl F
+ clog F
+ clog10 F
+ clog10f F
+ clog10l F
+ clogf F
+ clogl F
+ conj F
+ conjf F
+ conjl F
+ copysign F
+ copysignf F
+ copysignl F
+ cos F
+ cosf F
+ cosh F
+ coshf F
+ coshl F
+ cosl F
+ cpow F
+ cpowf F
+ cpowl F
+ cproj F
+ cprojf F
+ cprojl F
+ creal F
+ crealf F
+ creall F
+ csin F
+ csinf F
+ csinh F
+ csinhf F
+ csinhl F
+ csinl F
+ csqrt F
+ csqrtf F
+ csqrtl F
+ ctan F
+ ctanf F
+ ctanh F
+ ctanhf F
+ ctanhl F
+ ctanl F
+ drem F
+ dremf F
+ dreml F
+ erf F
+ erfc F
+ erfcf F
+ erfcl F
+ erff F
+ erfl F
+ exp F
+ exp10 F
+ exp10f F
+ exp10l F
+ exp2 F
+ exp2f F
+ exp2l F
+ expf F
+ expl F
+ expm1 F
+ expm1f F
+ expm1l F
+ fabs F
+ fabsf F
+ fabsl F
+ fdim F
+ fdimf F
+ fdiml F
+ feclearexcept F
+ fedisableexcept F
+ feenableexcept F
+ fegetenv F
+ fegetexcept F
+ fegetexceptflag F
+ fegetround F
+ feholdexcept F
+ feraiseexcept F
+ fesetenv F
+ fesetexceptflag F
+ fesetround F
+ fetestexcept F
+ feupdateenv F
+ finite F
+ finitef F
+ finitel F
+ floor F
+ floorf F
+ floorl F
+ fma F
+ fmaf F
+ fmal F
+ fmax F
+ fmaxf F
+ fmaxl F
+ fmin F
+ fminf F
+ fminl F
+ fmod F
+ fmodf F
+ fmodl F
+ frexp F
+ frexpf F
+ frexpl F
+ gamma F
+ gammaf F
+ gammal F
+ hypot F
+ hypotf F
+ hypotl F
+ ilogb F
+ ilogbf F
+ ilogbl F
+ j0 F
+ j0f F
+ j0l F
+ j1 F
+ j1f F
+ j1l F
+ jn F
+ jnf F
+ jnl F
+ ldexp F
+ ldexpf F
+ ldexpl F
+ lgamma F
+ lgamma_r F
+ lgammaf F
+ lgammaf_r F
+ lgammal F
+ lgammal_r F
+ llrint F
+ llrintf F
+ llrintl F
+ llround F
+ llroundf F
+ llroundl F
+ log F
+ log10 F
+ log10f F
+ log10l F
+ log1p F
+ log1pf F
+ log1pl F
+ log2 F
+ log2f F
+ log2l F
+ logb F
+ logbf F
+ logbl F
+ logf F
+ logl F
+ lrint F
+ lrintf F
+ lrintl F
+ lround F
+ lroundf F
+ lroundl F
+ matherr F
+ modf F
+ modff F
+ modfl F
+ nan F
+ nanf F
+ nanl F
+ nearbyint F
+ nearbyintf F
+ nearbyintl F
+ nextafter F
+ nextafterf F
+ nextafterl F
+ nexttoward F
+ nexttowardf F
+ nexttowardl F
+ pow F
+ pow10 F
+ pow10f F
+ pow10l F
+ powf F
+ powl F
+ remainder F
+ remainderf F
+ remainderl F
+ remquo F
+ remquof F
+ remquol F
+ rint F
+ rintf F
+ rintl F
+ round F
+ roundf F
+ roundl F
+ scalb F
+ scalbf F
+ scalbl F
+ scalbln F
+ scalblnf F
+ scalblnl F
+ scalbn F
+ scalbnf F
+ scalbnl F
+ signgam D 0x4
+ significand F
+ significandf F
+ significandl F
+ sin F
+ sincos F
+ sincosf F
+ sincosl F
+ sinf F
+ sinh F
+ sinhf F
+ sinhl F
+ sinl F
+ sqrt F
+ sqrtf F
+ sqrtl F
+ tan F
+ tanf F
+ tanh F
+ tanhf F
+ tanhl F
+ tanl F
+ tgamma F
+ tgammaf F
+ tgammal F
+ trunc F
+ truncf F
+ truncl F
+ y0 F
+ y0f F
+ y0l F
+ y1 F
+ y1f F
+ y1l F
+ yn F
+ ynf F
+ ynl F
diff --git a/sysdeps/unix/sysv/linux/nios2/libnsl.abilist b/sysdeps/unix/sysv/linux/nios2/libnsl.abilist
new file mode 100644
index 0000000000..7df8621637
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libnsl.abilist
@@ -0,0 +1,123 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ __free_fdresult F
+ __nis_default_access F
+ __nis_default_group F
+ __nis_default_owner F
+ __nis_default_ttl F
+ __nis_finddirectory F
+ __nis_hash F
+ __nisbind_connect F
+ __nisbind_create F
+ __nisbind_destroy F
+ __nisbind_next F
+ __yp_check F
+ nis_add F
+ nis_add_entry F
+ nis_addmember F
+ nis_checkpoint F
+ nis_clone_directory F
+ nis_clone_object F
+ nis_clone_result F
+ nis_creategroup F
+ nis_destroy_object F
+ nis_destroygroup F
+ nis_dir_cmp F
+ nis_domain_of F
+ nis_domain_of_r F
+ nis_first_entry F
+ nis_free_directory F
+ nis_free_object F
+ nis_free_request F
+ nis_freenames F
+ nis_freeresult F
+ nis_freeservlist F
+ nis_freetags F
+ nis_getnames F
+ nis_getservlist F
+ nis_ismember F
+ nis_leaf_of F
+ nis_leaf_of_r F
+ nis_lerror F
+ nis_list F
+ nis_local_directory F
+ nis_local_group F
+ nis_local_host F
+ nis_local_principal F
+ nis_lookup F
+ nis_mkdir F
+ nis_modify F
+ nis_modify_entry F
+ nis_name_of F
+ nis_name_of_r F
+ nis_next_entry F
+ nis_perror F
+ nis_ping F
+ nis_print_directory F
+ nis_print_entry F
+ nis_print_group F
+ nis_print_group_entry F
+ nis_print_link F
+ nis_print_object F
+ nis_print_result F
+ nis_print_rights F
+ nis_print_table F
+ nis_read_obj F
+ nis_remove F
+ nis_remove_entry F
+ nis_removemember F
+ nis_rmdir F
+ nis_servstate F
+ nis_sperrno F
+ nis_sperror F
+ nis_sperror_r F
+ nis_stats F
+ nis_verifygroup F
+ nis_write_obj F
+ readColdStartFile F
+ writeColdStartFile F
+ xdr_cback_data F
+ xdr_domainname F
+ xdr_keydat F
+ xdr_mapname F
+ xdr_obj_p F
+ xdr_peername F
+ xdr_valdat F
+ xdr_yp_buf F
+ xdr_ypall F
+ xdr_ypbind_binding F
+ xdr_ypbind_resp F
+ xdr_ypbind_resptype F
+ xdr_ypbind_setdom F
+ xdr_ypdelete_args F
+ xdr_ypmap_parms F
+ xdr_ypmaplist F
+ xdr_yppush_status F
+ xdr_yppushresp_xfr F
+ xdr_ypreq_key F
+ xdr_ypreq_nokey F
+ xdr_ypreq_xfr F
+ xdr_ypresp_all F
+ xdr_ypresp_key_val F
+ xdr_ypresp_maplist F
+ xdr_ypresp_master F
+ xdr_ypresp_order F
+ xdr_ypresp_val F
+ xdr_ypresp_xfr F
+ xdr_ypstat F
+ xdr_ypupdate_args F
+ xdr_ypxfrstat F
+ yp_all F
+ yp_bind F
+ yp_first F
+ yp_get_default_domain F
+ yp_maplist F
+ yp_master F
+ yp_match F
+ yp_next F
+ yp_order F
+ yp_unbind F
+ yp_update F
+ ypbinderr_string F
+ yperr_string F
+ ypprot_err F
diff --git a/sysdeps/unix/sysv/linux/nios2/libpthread.abilist b/sysdeps/unix/sysv/linux/nios2/libpthread.abilist
new file mode 100644
index 0000000000..ca203c7755
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libpthread.abilist
@@ -0,0 +1,224 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ _IO_flockfile F
+ _IO_ftrylockfile F
+ _IO_funlockfile F
+ __close F
+ __connect F
+ __errno_location F
+ __fcntl F
+ __fork F
+ __h_errno_location F
+ __libc_allocate_rtsig F
+ __libc_current_sigrtmax F
+ __libc_current_sigrtmin F
+ __lseek F
+ __nanosleep F
+ __open F
+ __open64 F
+ __pread64 F
+ __pthread_cleanup_routine F
+ __pthread_getspecific F
+ __pthread_key_create F
+ __pthread_mutex_destroy F
+ __pthread_mutex_init F
+ __pthread_mutex_lock F
+ __pthread_mutex_trylock F
+ __pthread_mutex_unlock F
+ __pthread_mutexattr_destroy F
+ __pthread_mutexattr_init F
+ __pthread_mutexattr_settype F
+ __pthread_once F
+ __pthread_register_cancel F
+ __pthread_register_cancel_defer F
+ __pthread_rwlock_destroy F
+ __pthread_rwlock_init F
+ __pthread_rwlock_rdlock F
+ __pthread_rwlock_tryrdlock F
+ __pthread_rwlock_trywrlock F
+ __pthread_rwlock_unlock F
+ __pthread_rwlock_wrlock F
+ __pthread_setspecific F
+ __pthread_unregister_cancel F
+ __pthread_unregister_cancel_restore F
+ __pthread_unwind_next F
+ __pwrite64 F
+ __read F
+ __res_state F
+ __send F
+ __sigaction F
+ __wait F
+ __write F
+ _pthread_cleanup_pop F
+ _pthread_cleanup_pop_restore F
+ _pthread_cleanup_push F
+ _pthread_cleanup_push_defer F
+ accept F
+ close F
+ connect F
+ fcntl F
+ flockfile F
+ fork F
+ fsync F
+ ftrylockfile F
+ funlockfile F
+ longjmp F
+ lseek F
+ lseek64 F
+ msync F
+ nanosleep F
+ open F
+ open64 F
+ pause F
+ pread F
+ pread64 F
+ pthread_attr_destroy F
+ pthread_attr_getaffinity_np F
+ pthread_attr_getdetachstate F
+ pthread_attr_getguardsize F
+ pthread_attr_getinheritsched F
+ pthread_attr_getschedparam F
+ pthread_attr_getschedpolicy F
+ pthread_attr_getscope F
+ pthread_attr_getstack F
+ pthread_attr_getstackaddr F
+ pthread_attr_getstacksize F
+ pthread_attr_init F
+ pthread_attr_setaffinity_np F
+ pthread_attr_setdetachstate F
+ pthread_attr_setguardsize F
+ pthread_attr_setinheritsched F
+ pthread_attr_setschedparam F
+ pthread_attr_setschedpolicy F
+ pthread_attr_setscope F
+ pthread_attr_setstack F
+ pthread_attr_setstackaddr F
+ pthread_attr_setstacksize F
+ pthread_barrier_destroy F
+ pthread_barrier_init F
+ pthread_barrier_wait F
+ pthread_barrierattr_destroy F
+ pthread_barrierattr_getpshared F
+ pthread_barrierattr_init F
+ pthread_barrierattr_setpshared F
+ pthread_cancel F
+ pthread_cond_broadcast F
+ pthread_cond_destroy F
+ pthread_cond_init F
+ pthread_cond_signal F
+ pthread_cond_timedwait F
+ pthread_cond_wait F
+ pthread_condattr_destroy F
+ pthread_condattr_getclock F
+ pthread_condattr_getpshared F
+ pthread_condattr_init F
+ pthread_condattr_setclock F
+ pthread_condattr_setpshared F
+ pthread_create F
+ pthread_detach F
+ pthread_equal F
+ pthread_exit F
+ pthread_getaffinity_np F
+ pthread_getattr_default_np F
+ pthread_getattr_np F
+ pthread_getconcurrency F
+ pthread_getcpuclockid F
+ pthread_getname_np F
+ pthread_getschedparam F
+ pthread_getspecific F
+ pthread_join F
+ pthread_key_create F
+ pthread_key_delete F
+ pthread_kill F
+ pthread_kill_other_threads_np F
+ pthread_mutex_consistent F
+ pthread_mutex_consistent_np F
+ pthread_mutex_destroy F
+ pthread_mutex_getprioceiling F
+ pthread_mutex_init F
+ pthread_mutex_lock F
+ pthread_mutex_setprioceiling F
+ pthread_mutex_timedlock F
+ pthread_mutex_trylock F
+ pthread_mutex_unlock F
+ pthread_mutexattr_destroy F
+ pthread_mutexattr_getkind_np F
+ pthread_mutexattr_getprioceiling F
+ pthread_mutexattr_getprotocol F
+ pthread_mutexattr_getpshared F
+ pthread_mutexattr_getrobust F
+ pthread_mutexattr_getrobust_np F
+ pthread_mutexattr_gettype F
+ pthread_mutexattr_init F
+ pthread_mutexattr_setkind_np F
+ pthread_mutexattr_setprioceiling F
+ pthread_mutexattr_setprotocol F
+ pthread_mutexattr_setpshared F
+ pthread_mutexattr_setrobust F
+ pthread_mutexattr_setrobust_np F
+ pthread_mutexattr_settype F
+ pthread_once F
+ pthread_rwlock_destroy F
+ pthread_rwlock_init F
+ pthread_rwlock_rdlock F
+ pthread_rwlock_timedrdlock F
+ pthread_rwlock_timedwrlock F
+ pthread_rwlock_tryrdlock F
+ pthread_rwlock_trywrlock F
+ pthread_rwlock_unlock F
+ pthread_rwlock_wrlock F
+ pthread_rwlockattr_destroy F
+ pthread_rwlockattr_getkind_np F
+ pthread_rwlockattr_getpshared F
+ pthread_rwlockattr_init F
+ pthread_rwlockattr_setkind_np F
+ pthread_rwlockattr_setpshared F
+ pthread_self F
+ pthread_setaffinity_np F
+ pthread_setattr_default_np F
+ pthread_setcancelstate F
+ pthread_setcanceltype F
+ pthread_setconcurrency F
+ pthread_setname_np F
+ pthread_setschedparam F
+ pthread_setschedprio F
+ pthread_setspecific F
+ pthread_sigmask F
+ pthread_sigqueue F
+ pthread_spin_destroy F
+ pthread_spin_init F
+ pthread_spin_lock F
+ pthread_spin_trylock F
+ pthread_spin_unlock F
+ pthread_testcancel F
+ pthread_timedjoin_np F
+ pthread_tryjoin_np F
+ pthread_yield F
+ pwrite F
+ pwrite64 F
+ raise F
+ read F
+ recv F
+ recvfrom F
+ recvmsg F
+ sem_close F
+ sem_destroy F
+ sem_getvalue F
+ sem_init F
+ sem_open F
+ sem_post F
+ sem_timedwait F
+ sem_trywait F
+ sem_unlink F
+ sem_wait F
+ send F
+ sendmsg F
+ sendto F
+ sigaction F
+ siglongjmp F
+ sigwait F
+ system F
+ tcdrain F
+ wait F
+ waitpid F
+ write F
diff --git a/sysdeps/unix/sysv/linux/nios2/libresolv.abilist b/sysdeps/unix/sysv/linux/nios2/libresolv.abilist
new file mode 100644
index 0000000000..6904fa3392
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libresolv.abilist
@@ -0,0 +1,93 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ __b64_ntop F
+ __b64_pton F
+ __dn_comp F
+ __dn_count_labels F
+ __dn_expand F
+ __dn_skipname F
+ __fp_nquery F
+ __fp_query F
+ __fp_resstat F
+ __hostalias F
+ __loc_aton F
+ __loc_ntoa F
+ __p_cdname F
+ __p_cdnname F
+ __p_class F
+ __p_class_syms D 0x54
+ __p_fqname F
+ __p_fqnname F
+ __p_option F
+ __p_query F
+ __p_rcode F
+ __p_secstodate F
+ __p_time F
+ __p_type F
+ __p_type_syms D 0x228
+ __putlong F
+ __putshort F
+ __res_close F
+ __res_dnok F
+ __res_hnok F
+ __res_hostalias F
+ __res_isourserver F
+ __res_mailok F
+ __res_mkquery F
+ __res_nameinquery F
+ __res_nmkquery F
+ __res_nquery F
+ __res_nquerydomain F
+ __res_nsearch F
+ __res_nsend F
+ __res_ownok F
+ __res_queriesmatch F
+ __res_query F
+ __res_querydomain F
+ __res_search F
+ __res_send F
+ __sym_ntop F
+ __sym_ntos F
+ __sym_ston F
+ _gethtbyaddr F
+ _gethtbyname F
+ _gethtbyname2 F
+ _gethtent F
+ _getlong F
+ _getshort F
+ _res_opcodes D 0x40
+ _sethtent F
+ inet_net_ntop F
+ inet_net_pton F
+ inet_neta F
+ ns_datetosecs F
+ ns_format_ttl F
+ ns_get16 F
+ ns_get32 F
+ ns_initparse F
+ ns_makecanon F
+ ns_msg_getflag F
+ ns_name_compress F
+ ns_name_ntol F
+ ns_name_ntop F
+ ns_name_pack F
+ ns_name_pton F
+ ns_name_rollback F
+ ns_name_skip F
+ ns_name_uncompress F
+ ns_name_unpack F
+ ns_parse_ttl F
+ ns_parserr F
+ ns_put16 F
+ ns_put32 F
+ ns_samedomain F
+ ns_samename F
+ ns_skiprr F
+ ns_sprintrr F
+ ns_sprintrrf F
+ ns_subdomain F
+ res_gethostbyaddr F
+ res_gethostbyname F
+ res_gethostbyname2 F
+ res_send_setqhook F
+ res_send_setrhook F
diff --git a/sysdeps/unix/sysv/linux/nios2/librt.abilist b/sysdeps/unix/sysv/linux/nios2/librt.abilist
new file mode 100644
index 0000000000..5a7bd8121e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/librt.abilist
@@ -0,0 +1,37 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ __mq_open_2 F
+ aio_cancel F
+ aio_cancel64 F
+ aio_error F
+ aio_error64 F
+ aio_fsync F
+ aio_fsync64 F
+ aio_init F
+ aio_read F
+ aio_read64 F
+ aio_return F
+ aio_return64 F
+ aio_suspend F
+ aio_suspend64 F
+ aio_write F
+ aio_write64 F
+ lio_listio F
+ lio_listio64 F
+ mq_close F
+ mq_getattr F
+ mq_notify F
+ mq_open F
+ mq_receive F
+ mq_send F
+ mq_setattr F
+ mq_timedreceive F
+ mq_timedsend F
+ mq_unlink F
+ shm_open F
+ shm_unlink F
+ timer_create F
+ timer_delete F
+ timer_getoverrun F
+ timer_gettime F
+ timer_settime F
diff --git a/sysdeps/unix/sysv/linux/nios2/libthread_db.abilist b/sysdeps/unix/sysv/linux/nios2/libthread_db.abilist
new file mode 100644
index 0000000000..c3b45edc52
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libthread_db.abilist
@@ -0,0 +1,42 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ td_init F
+ td_log F
+ td_symbol_list F
+ td_ta_clear_event F
+ td_ta_delete F
+ td_ta_enable_stats F
+ td_ta_event_addr F
+ td_ta_event_getmsg F
+ td_ta_get_nthreads F
+ td_ta_get_ph F
+ td_ta_get_stats F
+ td_ta_map_id2thr F
+ td_ta_map_lwp2thr F
+ td_ta_new F
+ td_ta_reset_stats F
+ td_ta_set_event F
+ td_ta_setconcurrency F
+ td_ta_thr_iter F
+ td_ta_tsd_iter F
+ td_thr_clear_event F
+ td_thr_dbresume F
+ td_thr_dbsuspend F
+ td_thr_event_enable F
+ td_thr_event_getmsg F
+ td_thr_get_info F
+ td_thr_getfpregs F
+ td_thr_getgregs F
+ td_thr_getxregs F
+ td_thr_getxregsize F
+ td_thr_set_event F
+ td_thr_setfpregs F
+ td_thr_setgregs F
+ td_thr_setprio F
+ td_thr_setsigpending F
+ td_thr_setxregs F
+ td_thr_sigsetmask F
+ td_thr_tls_get_addr F
+ td_thr_tlsbase F
+ td_thr_tsd F
+ td_thr_validate F
diff --git a/sysdeps/unix/sysv/linux/nios2/libutil.abilist b/sysdeps/unix/sysv/linux/nios2/libutil.abilist
new file mode 100644
index 0000000000..81848d602d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/libutil.abilist
@@ -0,0 +1,8 @@
+GLIBC_2.21
+ GLIBC_2.21 A
+ forkpty F
+ login F
+ login_tty F
+ logout F
+ logwtmp F
+ openpty F
diff --git a/sysdeps/unix/sysv/linux/nios2/localplt.data b/sysdeps/unix/sysv/linux/nios2/localplt.data
new file mode 100644
index 0000000000..ee2b94889b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/localplt.data
@@ -0,0 +1,35 @@
+libc.so: realloc
+libc.so: __eqsf2
+libc.so: __floatsisf
+libc.so: __ltdf2
+libc.so: __gedf2
+libc.so: malloc
+libc.so: __nesf2
+libc.so: memalign
+libc.so: __mulsf3
+libc.so: __floatunsisf
+libc.so: __addsf3
+libc.so: __fixsfsi
+libc.so: __subsf3
+libc.so: calloc
+libc.so: __muldf3
+libc.so: __signbit
+libc.so: free
+libc.so: __subdf3
+libc.so: __adddf3
+libc.so: __divdf3
+libc.so: __floatsidf
+libc.so: __divsf3
+libc.so: __nedf2
+libc.so: __eqdf2
+libm.so: __signbitf
+libm.so: __signbit
+libm.so: matherr
+# The dynamic loader uses __libc_memalign internally to allocate aligned
+# TLS storage. The other malloc family of functions are expected to allow
+# user symbol interposition.
+ld.so: __libc_memalign
+ld.so: malloc
+ld.so: calloc
+ld.so: realloc
+ld.so: free
diff --git a/sysdeps/unix/sysv/linux/nios2/makecontext.c b/sysdeps/unix/sysv/linux/nios2/makecontext.c
new file mode 100644
index 0000000000..5df951a4e6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/makecontext.c
@@ -0,0 +1,79 @@
+/* Create new context.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <ucontext.h>
+
+/* makecontext sets up a stack and the registers for the
+   user context.  The stack looks like this:
+
+               +-----------------------+
+	       | padding as required   |
+               +-----------------------+
+    sp ->      | parameters 5 to n     |
+               +-----------------------+
+
+   The registers are set up like this:
+     r4--r7 : parameter 1 to 4
+     r16    : uc_link
+     sp     : stack pointer.
+*/
+
+void
+__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
+{
+  extern void __startcontext (void);
+  unsigned long *sp;
+  va_list ap;
+  int i;
+
+  sp = (unsigned long *)
+    ((uintptr_t) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
+
+  /* Allocate stack arguments.  */
+  sp -= argc < 4 ? 0 : argc - 4;
+
+  /* Keep the stack aligned.  */
+  sp = (unsigned long*) (((uintptr_t) sp) & -4L);
+
+  /* Init version field.  */
+  ucp->uc_mcontext.version = 2;
+  /* Keep uc_link in r16.  */
+  ucp->uc_mcontext.regs[15] = (uintptr_t) ucp->uc_link;
+  /* Return address points to __startcontext().  */
+  ucp->uc_mcontext.regs[23] = (uintptr_t) &__startcontext;
+  /* Frame pointer is null.  */
+  ucp->uc_mcontext.regs[24] = (uintptr_t) 0;
+  /* Restart in user-space starting at 'func'.  */
+  ucp->uc_mcontext.regs[27] = (uintptr_t) func;
+  /* Set stack pointer.  */
+  ucp->uc_mcontext.regs[28] = (uintptr_t) sp;
+
+  va_start (ap, argc);
+  for (i = 0; i < argc; ++i)
+    if (i < 4)
+      ucp->uc_mcontext.regs[i + 3] = va_arg (ap, unsigned long);
+    else
+      sp[i - 4] = va_arg (ap, unsigned long);
+
+  va_end (ap);
+}
+
+weak_alias (__makecontext, makecontext)
diff --git a/sysdeps/unix/sysv/linux/nios2/profil-counter.h b/sysdeps/unix/sysv/linux/nios2/profil-counter.h
new file mode 100644
index 0000000000..8a6a0bcf3d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/profil-counter.h
@@ -0,0 +1,2 @@
+/* We can use the ix86 version.  */
+#include <sysdeps/unix/sysv/linux/i386/profil-counter.h>
diff --git a/sysdeps/unix/sysv/linux/nios2/setcontext.S b/sysdeps/unix/sysv/linux/nios2/setcontext.S
new file mode 100644
index 0000000000..9a8dd87b93
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/setcontext.S
@@ -0,0 +1,103 @@
+/* Set current context.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+#include "ucontext_i.h"
+
+/* int setcontext (const ucontext_t *ucp) */
+	.text
+ENTRY(__setcontext)
+	ldw	r5, UCONTEXT_FLAGS(r4)
+	movi	r6, 1
+	bne	r5, r6, .Lsigreturn
+
+	mov	r10, r4
+
+	/* Restore signal mask.  */
+	/* rt_sigprocmask (SIG_SETMASK, NULL, &ucp->uc_sigmask, _NSIG8) */
+	movi	r7, _NSIG8
+	addi	r6, r4, UCONTEXT_SIGMASK
+	mov	r5, zero
+	movi	r4, SIG_SETMASK
+	movi	r2, SYS_ify (rt_sigprocmask)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+
+	/* Restore argument registers, for the makecontext() case.  */
+	ldw	r4,   (UCONTEXT_MCONTEXT + 4*4)(r10)
+	ldw	r5,   (UCONTEXT_MCONTEXT + 5*4)(r10)
+	ldw	r6,   (UCONTEXT_MCONTEXT + 6*4)(r10)
+	ldw	r7,   (UCONTEXT_MCONTEXT + 7*4)(r10)
+
+	ldw	r16, (UCONTEXT_MCONTEXT + 16*4)(r10)
+	ldw	r17, (UCONTEXT_MCONTEXT + 17*4)(r10)
+	ldw	r18, (UCONTEXT_MCONTEXT + 18*4)(r10)
+	ldw	r19, (UCONTEXT_MCONTEXT + 19*4)(r10)
+	ldw	r20, (UCONTEXT_MCONTEXT + 20*4)(r10)
+	ldw	r21, (UCONTEXT_MCONTEXT + 21*4)(r10)
+	ldw	r22, (UCONTEXT_MCONTEXT + 22*4)(r10)
+	ldw	ra,  (UCONTEXT_MCONTEXT + 24*4)(r10)
+	ldw	fp,  (UCONTEXT_MCONTEXT + 25*4)(r10)
+	ldw	gp,  (UCONTEXT_MCONTEXT + 26*4)(r10)
+	/* Load address to continue execution.  */
+	ldw	r3,  (UCONTEXT_MCONTEXT + 28*4)(r10)
+	ldw	sp,  (UCONTEXT_MCONTEXT + 29*4)(r10)
+
+	mov	r2, zero
+	jmp	r3
+
+.Lsigreturn:
+	addi	sp, sp, -RT_SIGFRAME_SIZE
+	cfi_adjust_cfa_offset (RT_SIGFRAME_SIZE)
+
+	addi	r2, sp, RT_SIGFRAME_UCONTEXT
+	movi	r3, UCONTEXT_SIZE-4
+1:
+	add	r6, r4, r3
+	ldw	r5, 0(r6)
+	add	r7, r2, r3
+	addi	r3, r3, -4
+	stw	r5, 0(r7)
+	bgt	r3, zero, 1b
+
+	movi	r2, SYS_ify (rt_sigreturn)
+	trap
+
+	addi	sp, sp, RT_SIGFRAME_SIZE
+	cfi_adjust_cfa_offset (-RT_SIGFRAME_SIZE)
+	br	SYSCALL_ERROR_LABEL
+
+PSEUDO_END (__setcontext)
+weak_alias (__setcontext, setcontext)
+
+ENTRY(__startcontext)
+	mov	r4, r16
+	bne	r4, zero, __setcontext
+
+	/* If uc_link == zero, call _exit.  */
+#ifdef PIC
+	nextpc	r22
+1:	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	add	r22, r22, r8
+	ldw	r8, %call(HIDDEN_JUMPTARGET(_exit))(r22)
+	jmp	r8
+#else
+	jmpi	_exit
+#endif
+END(__startcontext)
diff --git a/sysdeps/unix/sysv/linux/nios2/shlib-versions b/sysdeps/unix/sysv/linux/nios2/shlib-versions
new file mode 100644
index 0000000000..443fd4df23
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/shlib-versions
@@ -0,0 +1,2 @@
+DEFAULT                 GLIBC_2.21
+ld=ld-linux-nios2.so.1
diff --git a/sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h b/sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h
new file mode 100644
index 0000000000..ef77d82b98
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h
@@ -0,0 +1,35 @@
+/* Nios II definitions for signal handling calling conventions.
+   Copyright (C) 2015 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/>.  */
+
+#include <sys/ucontext.h>
+#include "kernel-features.h"
+
+#define SIGCONTEXT siginfo_t *_si, struct ucontext *
+#define GET_PC(ctx) ((void *) (ctx)->uc_mcontext.regs[27])
+
+/* There is no reliable way to get the sigcontext unless we use a
+   three-argument signal handler.  */
+#define __sigaction(sig, act, oact) ({ \
+  (act)->sa_flags |= SA_SIGINFO; \
+  (__sigaction) (sig, act, oact); \
+})
+
+#define sigaction(sig, act, oact) ({ \
+  (act)->sa_flags |= SA_SIGINFO; \
+  (sigaction) (sig, act, oact); \
+})
diff --git a/sysdeps/unix/sysv/linux/nios2/swapcontext.S b/sysdeps/unix/sysv/linux/nios2/swapcontext.S
new file mode 100644
index 0000000000..c2c321d96a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/swapcontext.S
@@ -0,0 +1,125 @@
+/* Modify saved context.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+#include "ucontext_i.h"
+
+/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */
+	.text
+ENTRY(__swapcontext)
+
+	/* Same as getcontext().  */
+	stw	r16, (UCONTEXT_MCONTEXT + 16*4)(r4)
+	stw	r17, (UCONTEXT_MCONTEXT + 17*4)(r4)
+	stw	r18, (UCONTEXT_MCONTEXT + 18*4)(r4)
+	stw	r19, (UCONTEXT_MCONTEXT + 19*4)(r4)
+	stw	r20, (UCONTEXT_MCONTEXT + 20*4)(r4)
+	stw	r21, (UCONTEXT_MCONTEXT + 21*4)(r4)
+	stw	r22, (UCONTEXT_MCONTEXT + 22*4)(r4)
+	stw	ra,  (UCONTEXT_MCONTEXT + 24*4)(r4)
+	stw	fp,  (UCONTEXT_MCONTEXT + 25*4)(r4)
+	stw	gp,  (UCONTEXT_MCONTEXT + 26*4)(r4)
+	/* Store return address at place for EA.  */
+	stw	ra,  (UCONTEXT_MCONTEXT + 28*4)(r4)
+	stw	sp,  (UCONTEXT_MCONTEXT + 29*4)(r4)
+	/* Store zero for return success.  */
+	stw	zero, (UCONTEXT_MCONTEXT + 2*4)(r4)
+
+	/* Store value "1" at uc_flags to recognize as getcontext created.  */
+	movi	r2, 1
+	stw	r2, UCONTEXT_FLAGS(r4)
+
+	/* Store MCONTEXT_VERSION at first word of mcontext_t.  */
+	movi	r2, MCONTEXT_VERSION
+	stw	r2, UCONTEXT_MCONTEXT(r4)
+
+	/* Save ucp to non-argument syscall preserved register.  */
+	mov	r10, r5
+
+	/* Get signal mask.  */
+	/* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
+	movi	r7, _NSIG8
+	addi	r6, r4, UCONTEXT_SIGMASK
+	mov	r5, zero
+	movi	r4, SIG_BLOCK
+	movi	r2, SYS_ify (rt_sigprocmask)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+
+
+	/* Same as setcontext().  */
+	ldw	r5, UCONTEXT_FLAGS(r10)
+	movi	r6, 1
+	bne	r5, r6, .Lsigreturn
+
+	/* Restore signal mask.  */
+	/* rt_sigprocmask (SIG_SETMASK, NULL, &ucp->uc_sigmask, _NSIG8) */
+	movi	r7, _NSIG8
+	addi	r6, r10, UCONTEXT_SIGMASK
+	mov	r5, zero
+	movi	r4, SIG_SETMASK
+	movi	r2, SYS_ify (rt_sigprocmask)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+
+	/* Restore argument registers, for the makecontext() case.  */
+	ldw	r4,   (UCONTEXT_MCONTEXT + 4*4)(r10)
+	ldw	r5,   (UCONTEXT_MCONTEXT + 5*4)(r10)
+	ldw	r6,   (UCONTEXT_MCONTEXT + 6*4)(r10)
+	ldw	r7,   (UCONTEXT_MCONTEXT + 7*4)(r10)
+
+	ldw	r16, (UCONTEXT_MCONTEXT + 16*4)(r10)
+	ldw	r17, (UCONTEXT_MCONTEXT + 17*4)(r10)
+	ldw	r18, (UCONTEXT_MCONTEXT + 18*4)(r10)
+	ldw	r19, (UCONTEXT_MCONTEXT + 19*4)(r10)
+	ldw	r20, (UCONTEXT_MCONTEXT + 20*4)(r10)
+	ldw	r21, (UCONTEXT_MCONTEXT + 21*4)(r10)
+	ldw	r22, (UCONTEXT_MCONTEXT + 22*4)(r10)
+	ldw	ra,  (UCONTEXT_MCONTEXT + 24*4)(r10)
+	ldw	fp,  (UCONTEXT_MCONTEXT + 25*4)(r10)
+	ldw	gp,  (UCONTEXT_MCONTEXT + 26*4)(r10)
+	/* Load address to continue execution.  */
+	ldw	r3,  (UCONTEXT_MCONTEXT + 28*4)(r10)
+	ldw	sp,  (UCONTEXT_MCONTEXT + 29*4)(r10)
+
+	mov	r2, zero
+	jmp	r3
+
+.Lsigreturn:
+	addi	sp, sp, -RT_SIGFRAME_SIZE
+	cfi_adjust_cfa_offset (RT_SIGFRAME_SIZE)
+
+	addi	r2, sp, RT_SIGFRAME_UCONTEXT
+	movi	r3, UCONTEXT_SIZE-4
+1:
+	add	r6, r4, r3
+	ldw	r5, 0(r6)
+	add	r7, r2, r3
+	addi	r3, r3, -4
+	stw	r5, 0(r7)
+	bgt	r3, zero, 1b
+
+	movi	r2, SYS_ify (rt_sigreturn)
+	trap
+
+	addi	sp, sp, RT_SIGFRAME_SIZE
+	cfi_adjust_cfa_offset (-RT_SIGFRAME_SIZE)
+	br	SYSCALL_ERROR_LABEL
+
+PSEUDO_END (__swapcontext)
+weak_alias (__swapcontext, swapcontext)
diff --git a/sysdeps/unix/sysv/linux/nios2/sys/cachectl.h b/sysdeps/unix/sysv/linux/nios2/sys/cachectl.h
new file mode 100644
index 0000000000..1f7db26af6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sys/cachectl.h
@@ -0,0 +1,36 @@
+/* cacheflush - flush contents of instruction and/or data cache.
+   Copyright (C) 2015 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>
+
+/* Get the kernel definition for the op bits.  */
+#include <asm/cachectl.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 */
diff --git a/sysdeps/unix/sysv/linux/nios2/sys/procfs.h b/sysdeps/unix/sysv/linux/nios2/sys/procfs.h
new file mode 100644
index 0000000000..86237ff766
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sys/procfs.h
@@ -0,0 +1,123 @@
+/* Core image file related definitions, Nios II version.
+   Copyright (C) 1996-2015 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
+#define _SYS_PROCFS_H	1
+
+/* This is somewhat modelled after the file of the same name on SVR4
+   systems.  It provides a definition of the core file format for ELF
+   used on Linux.  It doesn't have anything to do with the /proc file
+   system, even though Linux has one.
+
+   Anyway, 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.  */
+
+#include <features.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/user.h>
+
+__BEGIN_DECLS
+
+/* 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;
+
+/* Signal info.  */
+struct elf_siginfo
+  {
+    int si_signo;			/* Signal number.  */
+    int si_code;			/* Extra code.  */
+    int si_errno;			/* Errno.  */
+  };
+
+/* Definitions to generate Intel SVR4-like core files.  These mostly
+   have the same names as the SVR4 types with "elf_" tacked on the
+   front to prevent clashes with Linux definitions, and the typedef
+   forms have been avoided.  This is mostly like the SVR4 structure,
+   but more Linuxy, with things that Linux does not support and which
+   GDB doesn't really use excluded.  */
+
+struct elf_prstatus
+  {
+    struct elf_siginfo pr_info;		/* Info associated with signal.  */
+    short int pr_cursig;		/* Current signal.  */
+    unsigned long int pr_sigpend;	/* Set of pending signals.  */
+    unsigned long int pr_sighold;	/* Set of held signals.  */
+    __pid_t pr_pid;
+    __pid_t pr_ppid;
+    __pid_t pr_pgrp;
+    __pid_t pr_sid;
+    struct timeval pr_utime;		/* User time.  */
+    struct timeval pr_stime;		/* System time.  */
+    struct timeval pr_cutime;		/* Cumulative user time.  */
+    struct timeval pr_cstime;		/* Cumulative system time.  */
+    elf_gregset_t pr_reg;		/* GP registers.  */
+    int pr_fpvalid;			/* True if math copro being used.  */
+  };
+
+
+#define ELF_PRARGSZ     (80)    /* Number of chars for args.  */
+
+struct elf_prpsinfo
+  {
+    char pr_state;			/* Numeric process state.  */
+    char pr_sname;			/* Char for pr_state.  */
+    char pr_zomb;			/* Zombie.  */
+    char pr_nice;			/* Nice val.  */
+    unsigned long int pr_flag;		/* Flags.  */
+    unsigned short int pr_uid;
+    unsigned short int pr_gid;
+    int pr_pid, pr_ppid, pr_pgrp, pr_sid;
+    /* Lots missing */
+    char pr_fname[16];			/* Filename of executable.  */
+    char pr_psargs[ELF_PRARGSZ];	/* Initial part of arg list.  */
+  };
+
+/* The rest of this file provides the types for emulation of the
+   Solaris <proc_service.h> interfaces that should be implemented by
+   users of libthread_db.  */
+
+/* Addresses.  */
+typedef void *psaddr_t;
+
+/* Register sets.  Linux has different names.  */
+typedef elf_gregset_t prgregset_t;
+typedef elf_fpregset_t prfpregset_t;
+
+/* We don't have any differences between processes and threads,
+   therefore have only one PID type.  */
+typedef __pid_t lwpid_t;
+
+/* Process status and info.  In the end we do provide typedefs for them.  */
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif	/* sys/procfs.h */
diff --git a/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h b/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
new file mode 100644
index 0000000000..36e54a07a6
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sys/ucontext.h
@@ -0,0 +1,48 @@
+/* struct ucontext definition, Nios II version.
+   Copyright (C) 2015 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 <signal.h>
+
+/* These definitions must be in sync with the kernel.  */
+
+#define MCONTEXT_VERSION 2
+
+/* Context to describe whole processor state.  */
+typedef struct mcontext
+  {
+    int version;
+    unsigned long regs[32];
+  } mcontext_t;
+
+/* Userlevel context.  */
+typedef struct ucontext
+  {
+    unsigned long uc_flags;
+    struct ucontext *uc_link;
+    stack_t uc_stack;
+    mcontext_t uc_mcontext;
+    __sigset_t uc_sigmask;
+  } ucontext_t;
+
+#endif /* sys/ucontext.h */
diff --git a/sysdeps/unix/sysv/linux/nios2/sys/user.h b/sysdeps/unix/sysv/linux/nios2/sys/user.h
new file mode 100644
index 0000000000..f096d1b94f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sys/user.h
@@ -0,0 +1,58 @@
+/* ptrace register data format definitions.
+   Copyright (C) 1998-2015 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 */
diff --git a/sysdeps/unix/sysv/linux/nios2/syscall.S b/sysdeps/unix/sysv/linux/nios2/syscall.S
new file mode 100644
index 0000000000..718db61f03
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/syscall.S
@@ -0,0 +1,36 @@
+/* syscall - indirect system call.
+   Copyright (C) 2005-2015 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/>.  */
+
+#include <sysdep.h>
+
+/* We don't need a special syscall to implement syscall().  It won't work
+   reliably with 64-bit arguments (but that is true on many modern platforms).
+*/
+
+ENTRY (syscall)
+	mov	r2, r4
+	mov	r4, r5
+	mov	r5, r6
+	mov	r6, r7
+	ldw	r7, 0(sp)
+	ldw	r8, 4(sp)
+	ldw	r9, 8(sp)
+	trap
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+        ret
+PSEUDO_END (syscall)
diff --git a/sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h b/sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h
new file mode 100644
index 0000000000..e2c70ba970
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sysdep-cancel.h
@@ -0,0 +1,141 @@
+/* Assembler macros with cancellation support, Nios II version.
+   Copyright (C) 2003-2015 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/>.  */
+
+#include <sysdep.h>
+#include <tls.h>
+#ifndef __ASSEMBLER__
+# include <nptl/pthreadP.h>
+#endif
+
+#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, args)				      \
+  .type __##syscall_name##_nocancel, @function;				      \
+  .globl __##syscall_name##_nocancel;					      \
+  __##syscall_name##_nocancel:						      \
+    cfi_startproc;                                                            \
+    DO_CALL (syscall_name, args);                                             \
+    bne r7, zero, SYSCALL_ERROR_LABEL;                                        \
+    ret;                                                                      \
+    cfi_endproc;                                                              \
+  .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;	      \
+  ENTRY (name)								      \
+    SINGLE_THREAD_P(r2);						      \
+    bne r2, zero, pseudo_cancel;					      \
+    DO_CALL (syscall_name, args);					      \
+    bne r7, zero, SYSCALL_ERROR_LABEL;                                        \
+    ret;								      \
+  pseudo_cancel:							      \
+    SAVESTK_##args;                 /* save syscall args and adjust stack */  \
+    SAVEREG(ra, 0);                     /* save return address */             \
+    SAVEREG(r22, 4);                    /* save GOT pointer */                \
+    nextpc r22;                                                               \
+1:  movhi r2, %hiadj(_gp_got - 1b);					      \
+    addi r2, r2, %lo(_gp_got - 1b);					      \
+    add r22, r22, r2;                                                         \
+    CENABLE;                                                                  \
+    callr r3;                                                                 \
+    stw r2, 8(sp);                      /* save mask */                       \
+    LOADARGS_##args;                                                          \
+    movi r2, SYS_ify(syscall_name);                                           \
+    trap;                                                                     \
+    stw r2, 12(sp);                     /* save syscall result */             \
+    stw r7, 16(sp);                     /* save syscall error flag */         \
+    ldw r4, 8(sp);                      /* pass mask as argument 1 */         \
+    CDISABLE;                                                                 \
+    callr r3;                                                                 \
+    ldw r7, 16(sp);                     /* restore syscall error flag */      \
+    ldw r2, 12(sp);                     /* restore syscall result */          \
+    ldw ra, 0(sp);                      /* restore return address */          \
+    ldw r22, 4(sp);                     /* restore GOT pointer */             \
+    RESTORESTK_##args;                                                        \
+    bne r7, zero, SYSCALL_ERROR_LABEL;
+
+
+# undef PSEUDO_END
+# define PSEUDO_END(sym) \
+  SYSCALL_ERROR_HANDLER \
+  END (sym)
+
+#define SAVEREG(REG, LOC) stw REG, LOC(sp); cfi_rel_offset (REG, LOC)
+#define SAVESTK(X) subi sp, sp, X; cfi_adjust_cfa_offset(X)
+#define SAVESTK_0 SAVESTK(20)
+#define SAVEARG_1 SAVEREG(r4, 20)
+#define SAVESTK_1 SAVESTK(24); SAVEARG_1
+#define SAVEARG_2 SAVEREG(r5, 24); SAVEARG_1
+#define SAVESTK_2 SAVESTK(28); SAVEARG_2
+#define SAVEARG_3 SAVEREG(r6, 28); SAVEARG_2
+#define SAVESTK_3 SAVESTK(32); SAVEARG_3
+#define SAVEARG_4 SAVEREG(r7, 32); SAVEARG_3
+#define SAVESTK_4 SAVESTK(36); SAVEARG_4
+#define SAVESTK_5 SAVESTK_4
+#define SAVESTK_6 SAVESTK_5
+
+#define LOADARGS_0
+#define LOADARGS_1 ldw r4, 20(sp)
+#define LOADARGS_2 LOADARGS_1; ldw r5, 24(sp)
+#define LOADARGS_3 LOADARGS_2; ldw r6, 28(sp)
+#define LOADARGS_4 LOADARGS_3; ldw r7, 32(sp)
+#define LOADARGS_5 LOADARGS_4; ldw r8, 36(sp)
+#define LOADARGS_6 LOADARGS_5; ldw r9, 40(sp)
+
+#define RESTORESTK(X) addi sp, sp, X; cfi_adjust_cfa_offset(-X)
+#define RESTORESTK_0 RESTORESTK(20)
+#define RESTORESTK_1 RESTORESTK(24)
+#define RESTORESTK_2 RESTORESTK(28)
+#define RESTORESTK_3 RESTORESTK(32)
+#define RESTORESTK_4 RESTORESTK(36)
+#define RESTORESTK_5 RESTORESTK(36)
+#define RESTORESTK_6 RESTORESTK(36)
+
+# if IS_IN (libpthread)
+#  define CENABLE	ldw r3, %call(__pthread_enable_asynccancel)(r22)
+#  define CDISABLE	ldw r3, %call(__pthread_disable_asynccancel)(r22)
+# elif IS_IN (librt)
+#  define CENABLE	ldw r3, %call(__librt_enable_asynccancel)(r22)
+#  define CDISABLE	ldw r3, %call(__librt_disable_asynccancel)(r22)
+# elif IS_IN (libc)
+#  define CENABLE	ldw r3, %call(__libc_enable_asynccancel)(r22)
+#  define CDISABLE	ldw r3, %call(__libc_disable_asynccancel)(r22)
+# else
+#  error Unsupported library
+# endif
+
+# ifndef __ASSEMBLER__
+#  define SINGLE_THREAD_P						\
+	__builtin_expect (THREAD_GETMEM (THREAD_SELF,			\
+					 header.multiple_threads)	\
+			  == 0, 1)
+# else
+#  define SINGLE_THREAD_P(reg)						\
+	ldw reg, MULTIPLE_THREADS_OFFSET(r23)
+#endif
+
+#elif !defined __ASSEMBLER__
+
+# define SINGLE_THREAD_P 1
+# define NO_CANCELLATION 1
+
+#endif
+
+#ifndef __ASSEMBLER__
+# define RTLD_SINGLE_THREAD_P \
+  __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
+				   header.multiple_threads) == 0, 1)
+#endif
diff --git a/sysdeps/unix/sysv/linux/nios2/sysdep.S b/sysdeps/unix/sysv/linux/nios2/sysdep.S
new file mode 100644
index 0000000000..cb3b7f6e09
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sysdep.S
@@ -0,0 +1,50 @@
+/* Static library error handling code fragment for Nios II.
+   Copyright (C) 2015 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/>.  */
+
+#include <sysdep.h>
+
+/* The following code is only used in the static library. In the shared
+   library, the error handling code is at the end of each function.  */
+
+#ifndef	PIC
+
+/* In the static library, the syscall stubs jump here when they detect
+   an error.  */
+
+# undef CALL_MCOUNT
+# define CALL_MCOUNT /* Don't insert the profiling call, it clobbers r2.  */
+
+# if IS_IN (libc)
+#  define SYSCALL_ERROR_ERRNO __libc_errno
+# else
+#  define SYSCALL_ERROR_ERRNO errno
+# endif
+	.text
+ENTRY (__syscall_error)
+	nextpc	r3
+1:
+	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	add	r3, r3, r8
+	ldw	r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3)
+	add	r3, r23, r3
+	stw	r2, 0(r3)
+	movi	r2, -1
+	ret
+END (__syscall_error)
+#endif
diff --git a/sysdeps/unix/sysv/linux/nios2/sysdep.h b/sysdeps/unix/sysv/linux/nios2/sysdep.h
new file mode 100644
index 0000000000..66a77f4716
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/sysdep.h
@@ -0,0 +1,260 @@
+/* Assembler macros for Nios II.
+   Copyright (C) 2000-2015 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 _LINUX_NIOS2_SYSDEP_H
+#define _LINUX_NIOS2_SYSDEP_H 1
+
+#include <asm/unistd.h>
+#include <sysdeps/unix/sysdep.h>
+#include <sysdeps/nios2/sysdep.h>
+#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
+
+/* For RTLD_PRIVATE_ERRNO.  */
+#include <dl-sysdep.h>
+
+#include <tls.h>
+
+/* For Linux we can use the system call table in the header file
+        /usr/include/asm/unistd.h
+   of the kernel.  But these symbols do not follow the SYS_* syntax
+   so we have to redefine the `SYS_ify' macro here.  */
+#undef SYS_ify
+#define SYS_ify(syscall_name)   __NR_##syscall_name
+
+#ifdef __ASSEMBLER__
+
+#define SYSCALL_ERROR_LABEL __local_syscall_error
+
+#undef PSEUDO
+#define PSEUDO(name, syscall_name, args) \
+  ENTRY (name)                           \
+    DO_CALL (syscall_name, args)         \
+    bne r7, zero, SYSCALL_ERROR_LABEL;   \
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) \
+  SYSCALL_ERROR_HANDLER  \
+  END (name)
+
+#undef PSEUDO_NOERRNO
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+  ENTRY (name)                                   \
+    DO_CALL (syscall_name, args)
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(name) \
+  END (name)
+
+#undef ret_NOERRNO
+#define ret_NOERRNO ret
+
+#undef DO_CALL
+#define DO_CALL(syscall_name, args) \
+    DOARGS_##args                   \
+    movi r2, SYS_ify(syscall_name);  \
+    trap;
+
+#if defined(__PIC__) || defined(PIC)
+
+# if RTLD_PRIVATE_ERRNO
+
+#  define SYSCALL_ERROR_HANDLER			\
+  SYSCALL_ERROR_LABEL:				\
+  nextpc r3;					\
+1:						\
+  movhi r8, %hiadj(rtld_errno - 1b);		\
+  addi r8, r8, %lo(rtld_errno - 1b);		\
+  add r3, r3, r8;				\
+  stw r2, 0(r3);				\
+  movi r2, -1;					\
+  ret;
+
+# else
+
+#  if IS_IN (libc)
+#   define SYSCALL_ERROR_ERRNO __libc_errno
+#  else
+#   define SYSCALL_ERROR_ERRNO errno
+#  endif
+#  define SYSCALL_ERROR_HANDLER			\
+  SYSCALL_ERROR_LABEL:				\
+  nextpc r3;					\
+1:						\
+  movhi r8, %hiadj(_gp_got - 1b);		\
+  addi r8, r8, %lo(_gp_got - 1b);		\
+  add r3, r3, r8;				\
+  ldw r3, %tls_ie(SYSCALL_ERROR_ERRNO)(r3);	\
+  add r3, r23, r3;				\
+  stw r2, 0(r3);				\
+  movi r2, -1;					\
+  ret;
+
+# endif
+
+#else
+
+/* We can use a single error handler in the static library.  */
+#define SYSCALL_ERROR_HANDLER			\
+  SYSCALL_ERROR_LABEL:				\
+  jmpi __syscall_error;
+
+#endif
+
+#define DOARGS_0 /* nothing */
+#define DOARGS_1 /* nothing */
+#define DOARGS_2 /* nothing */
+#define DOARGS_3 /* nothing */
+#define DOARGS_4 /* nothing */
+#define DOARGS_5 ldw r8, 0(sp);
+#define DOARGS_6 ldw r9, 4(sp); ldw r8, 0(sp);
+
+/* The function has to return the error code.  */
+#undef  PSEUDO_ERRVAL
+#define PSEUDO_ERRVAL(name, syscall_name, args) \
+  ENTRY (name)                                  \
+    DO_CALL (syscall_name, args)
+
+#undef  PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(name) \
+  END (name)
+
+#define ret_ERRVAL ret
+
+#else /* __ASSEMBLER__ */
+
+/* In order to get __set_errno() definition in INLINE_SYSCALL.  */
+#include <errno.h>
+
+/* Define a macro which expands into the inline wrapper code for a system
+   call.  */
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...)                               \
+  ({ INTERNAL_SYSCALL_DECL(err);					\
+     unsigned int result_var = INTERNAL_SYSCALL (name, err, nr, args);	\
+     if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) )			\
+       {								\
+	 __set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err));	\
+	 result_var = -1L;						\
+       }								\
+     (int) result_var; })
+
+#undef INTERNAL_SYSCALL_DECL
+#define INTERNAL_SYSCALL_DECL(err) unsigned int err __attribute__((unused))
+
+#undef INTERNAL_SYSCALL_ERROR_P
+#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (unsigned int) (err))
+
+#undef INTERNAL_SYSCALL_ERRNO
+#define INTERNAL_SYSCALL_ERRNO(val, err)   ((void) (err), val)
+
+#undef INTERNAL_SYSCALL_RAW
+#define INTERNAL_SYSCALL_RAW(name, err, nr, args...)            \
+  ({ unsigned int _sys_result;                                  \
+     {                                                          \
+       /* Load argument values in temporary variables
+	  to perform side effects like function calls
+	  before the call-used registers are set.  */		\
+       LOAD_ARGS_##nr (args)					\
+       LOAD_REGS_##nr						\
+       register int _r2 asm ("r2") = (int)(name);               \
+       register int _err asm ("r7");                            \
+       asm volatile ("trap"                                     \
+                     : "+r" (_r2), "=r" (_err)                  \
+                     : ASM_ARGS_##nr				\
+                     : __SYSCALL_CLOBBERS);                     \
+       _sys_result = _r2;                                       \
+       err = _err;                                              \
+     }                                                          \
+     (int) _sys_result; })
+
+#undef INTERNAL_SYSCALL
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+	INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args)
+
+#undef INTERNAL_SYSCALL_NCS
+#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
+	INTERNAL_SYSCALL_RAW(number, err, nr, args)
+
+#define LOAD_ARGS_0()
+#define LOAD_REGS_0
+#define ASM_ARGS_0
+#define LOAD_ARGS_1(a1)				\
+  LOAD_ARGS_0 ()				\
+  int __arg1 = (int) (a1);
+#define LOAD_REGS_1				\
+  register int _r4 asm ("r4") = __arg1;		\
+  LOAD_REGS_0
+#define ASM_ARGS_1                  "r" (_r4)
+#define LOAD_ARGS_2(a1, a2)			\
+  LOAD_ARGS_1 (a1)				\
+  int __arg2 = (int) (a2);
+#define LOAD_REGS_2				\
+  register int _r5 asm ("r5") = __arg2;		\
+  LOAD_REGS_1
+#define ASM_ARGS_2      ASM_ARGS_1, "r" (_r5)
+#define LOAD_ARGS_3(a1, a2, a3)			\
+  LOAD_ARGS_2 (a1, a2)				\
+  int __arg3 = (int) (a3);
+#define LOAD_REGS_3				\
+  register int _r6 asm ("r6") = __arg3;		\
+  LOAD_REGS_2
+#define ASM_ARGS_3      ASM_ARGS_2, "r" (_r6)
+#define LOAD_ARGS_4(a1, a2, a3, a4)		\
+  LOAD_ARGS_3 (a1, a2, a3)			\
+  int __arg4 = (int) (a4);
+#define LOAD_REGS_4				\
+  register int _r7 asm ("r7") = __arg4;		\
+  LOAD_REGS_3
+#define ASM_ARGS_4      ASM_ARGS_3, "r" (_r7)
+#define LOAD_ARGS_5(a1, a2, a3, a4, a5)		\
+  LOAD_ARGS_4 (a1, a2, a3, a4)			\
+  int __arg5 = (int) (a5);
+#define LOAD_REGS_5				\
+  register int _r8 asm ("r8") = __arg5;		\
+  LOAD_REGS_4
+#define ASM_ARGS_5      ASM_ARGS_4, "r" (_r8)
+#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6)	\
+  LOAD_ARGS_5 (a1, a2, a3, a4, a5)		\
+  int __arg6 = (int) (a6);
+#define LOAD_REGS_6			    \
+  register int _r9 asm ("r9") = __arg6;     \
+  LOAD_REGS_5
+#define ASM_ARGS_6      ASM_ARGS_5, "r" (_r9)
+
+#define __SYSCALL_CLOBBERS "memory"
+
+#endif /* __ASSEMBLER__ */
+
+/* Pointer mangling support.  */
+#if IS_IN (rtld)
+/* We cannot use the thread descriptor because in ld.so we use setjmp
+   earlier than the descriptor is initialized.  */
+#else
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE_GUARD(guard) ldw guard, POINTER_GUARD(r23)
+#  define PTR_MANGLE(dst, src, guard) xor dst, src, guard
+#  define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard)
+# else
+#  define PTR_MANGLE(var) \
+  (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
+#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
+# endif
+#endif
+
+
+#endif /* linux/nios2/sysdep.h */
diff --git a/sysdeps/unix/sysv/linux/nios2/ucontext_i.sym b/sysdeps/unix/sysv/linux/nios2/ucontext_i.sym
new file mode 100644
index 0000000000..a844c96796
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/ucontext_i.sym
@@ -0,0 +1,29 @@
+#include <inttypes.h>
+#include <signal.h>
+#include <stddef.h>
+#include <sys/ucontext.h>
+
+#include "kernel_rt_sigframe.h"
+
+SIG_BLOCK
+SIG_SETMASK
+
+_NSIG8				(_NSIG / 8)
+
+MCONTEXT_VERSION
+
+-- Offsets of the fields in the kernel rt_sigframe_t structure.
+#define rt_sigframe(member)	offsetof (struct kernel_rt_sigframe, member)
+
+RT_SIGFRAME_SIZE		sizeof (struct kernel_rt_sigframe)
+RT_SIGFRAME_UCONTEXT		rt_sigframe (uc)
+
+-- Offsets of the fields in the ucontext_t structure.
+#define ucontext(member)	offsetof (ucontext_t, member)
+
+UCONTEXT_FLAGS			ucontext (uc_flags)
+UCONTEXT_LINK			ucontext (uc_link)
+UCONTEXT_STACK			ucontext (uc_stack)
+UCONTEXT_MCONTEXT		ucontext (uc_mcontext)
+UCONTEXT_SIGMASK		ucontext (uc_sigmask)
+UCONTEXT_SIZE			sizeof (ucontext_t)
diff --git a/sysdeps/unix/sysv/linux/nios2/vfork.S b/sysdeps/unix/sysv/linux/nios2/vfork.S
new file mode 100644
index 0000000000..67a06520d0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/nios2/vfork.S
@@ -0,0 +1,44 @@
+/* vfork for Nios II Linux.
+   Copyright (C) 2005-2015 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/>.  */
+
+#include <sysdep.h>
+#include <tcb-offsets.h>
+
+ENTRY(__vfork)
+
+	ldw	r6, PID_OFFSET(r23)
+	sub	r7, zero, r6
+	bne	r7, zero, 2f
+	movhi	r7, %hi(0x80000000)
+2:
+	stw	r7, PID_OFFSET(r23)
+
+	movi	r4, 0x4111 /* (CLONE_VM | CLONE_VFORK | SIGCHLD) */
+	mov	r5, zero
+	DO_CALL (clone, 2)
+
+	beq	r2, zero, 1f
+	stw	r6, PID_OFFSET(r23)
+1:
+	bne	r7, zero, SYSCALL_ERROR_LABEL
+	ret
+
+PSEUDO_END (__vfork)
+libc_hidden_def (__vfork)
+
+weak_alias (__vfork, vfork)