[v2,2/4] Nios II port submission, sysdeps/nios2 parts
diff mbox

Message ID 5350FD1F.5030600@mentor.com
State New
Headers show

Commit Message

Chung-Lin Tang April 18, 2014, 10:23 a.m. UTC
Updated after Joseph's first review.

Note that the suggested DEFAULT_STACK_PERMS change to use a
non-executable stack has not been done yet, as we haven't coordinated
this change completely with Altera yet (no such kernel available yet).
This will probably be completed before committing upstream.

So far, the nios2 port's base version is still set at GLIBC_2.20. I'm
not sure if we'll have to increment this by the time of committing...

Thanks,
Chung-Lin

        * sysdeps/nios2/Implies: New file.
        * sysdeps/nios2/Makefile: New file.
        * sysdeps/nios2/Subdirs: New file.
        * sysdeps/nios2/Versions: New file.
        * sysdeps/nios2/__longjmp.S: New file.
        * sysdeps/nios2/abort-instr.h: New file.
        * sysdeps/nios2/backtrace.c: New file.
        * sysdeps/nios2/bsd-_setjmp.S: New file.
        * sysdeps/nios2/bsd-setjmp.S: New file.
        * sysdeps/nios2/configure.ac: New file.
        * sysdeps/nios2/configure: New generated file.
        * sysdeps/nios2/crti.S: New file.
        * sysdeps/nios2/crtn.S: New file.
        * sysdeps/nios2/dl-init.c: New file.
        * sysdeps/nios2/dl-machine.h: New file.
        * sysdeps/nios2/dl-sysdep.h: New file.
        * sysdeps/nios2/dl-tls.h: New file.
        * sysdeps/nios2/dl-trampoline.S: New file.
        * sysdeps/nios2/gccframe.h: New file.
        * sysdeps/nios2/gmp-mparam.h: New file.
        * sysdeps/nios2/jmpbuf-offsets.h: New file.
        * sysdeps/nios2/jmpbuf-unwind.h: New file.
        * sysdeps/nios2/ldsodefs.h: New file.
        * sysdeps/nios2/libc-tls.c: New file.
        * sysdeps/nios2/libm-test-ulps: New file.
        * sysdeps/nios2/machine-gmon.h: New file.
        * sysdeps/nios2/math-tests.h: New file.
        * sysdeps/nios2/math_private.h: New file.
        * sysdeps/nios2/memusage.h: New file.
        * sysdeps/nios2/preconfigure: New file.
        * sysdeps/nios2/s_fma.c: New file.
        * sysdeps/nios2/s_fmaf.c: New file.
        * sysdeps/nios2/setjmp.S: New file.
        * sysdeps/nios2/shlib-versions: New file.
        * sysdeps/nios2/sotruss-lib.c: New file.
        * sysdeps/nios2/stackguard-macros.h: New file.
        * sysdeps/nios2/stackinfo.h: New file.
        * sysdeps/nios2/start.S: New file.
        * sysdeps/nios2/sysdep.h: New file.
        * sysdeps/nios2/tls-macros.h: New file.
        * sysdeps/nios2/tst-audit.h: New file.
        * sysdeps/nios2/bits/endian.h: New file.
        * sysdeps/nios2/bits/fenv.h: New file.
        * sysdeps/nios2/bits/link.h: New file.
        * sysdeps/nios2/bits/setjmp.h: New file.
        * sysdeps/nios2/nptl/pthread_spin_lock.c: New file.
        * sysdeps/nios2/nptl/pthread_spin_trylock.c: New file.
        * sysdeps/nios2/nptl/pthreaddef.h: New file.
        * sysdeps/nios2/nptl/tcb-offsets.sym: New file.
        * sysdeps/nios2/nptl/tls.h: New file.
        * sysdeps/nios2/soft-fp/sfp-machine.h: New file.

Comments

Will Newton April 22, 2014, 8:42 a.m. UTC | #1
On 18 April 2014 11:23, Chung-Lin Tang <chunglin_tang@mentor.com> wrote:
> Updated after Joseph's first review.
>
> Note that the suggested DEFAULT_STACK_PERMS change to use a
> non-executable stack has not been done yet, as we haven't coordinated
> this change completely with Altera yet (no such kernel available yet).
> This will probably be completed before committing upstream.
>
> So far, the nios2 port's base version is still set at GLIBC_2.20. I'm
> not sure if we'll have to increment this by the time of committing...

One small thing I noticed. It looks like you are encrypting the frame
pointer in setjmp/longjmp. On ARM this broke e.g. Ruby which relies on
having pointers in jmp_buf unencrypted (lr and sp can safely be
encrypted).

> Thanks,
> Chung-Lin
>
>         * sysdeps/nios2/Implies: New file.
>         * sysdeps/nios2/Makefile: New file.
>         * sysdeps/nios2/Subdirs: New file.
>         * sysdeps/nios2/Versions: New file.
>         * sysdeps/nios2/__longjmp.S: New file.
>         * sysdeps/nios2/abort-instr.h: New file.
>         * sysdeps/nios2/backtrace.c: New file.
>         * sysdeps/nios2/bsd-_setjmp.S: New file.
>         * sysdeps/nios2/bsd-setjmp.S: New file.
>         * sysdeps/nios2/configure.ac: New file.
>         * sysdeps/nios2/configure: New generated file.
>         * sysdeps/nios2/crti.S: New file.
>         * sysdeps/nios2/crtn.S: New file.
>         * sysdeps/nios2/dl-init.c: New file.
>         * sysdeps/nios2/dl-machine.h: New file.
>         * sysdeps/nios2/dl-sysdep.h: New file.
>         * sysdeps/nios2/dl-tls.h: New file.
>         * sysdeps/nios2/dl-trampoline.S: New file.
>         * sysdeps/nios2/gccframe.h: New file.
>         * sysdeps/nios2/gmp-mparam.h: New file.
>         * sysdeps/nios2/jmpbuf-offsets.h: New file.
>         * sysdeps/nios2/jmpbuf-unwind.h: New file.
>         * sysdeps/nios2/ldsodefs.h: New file.
>         * sysdeps/nios2/libc-tls.c: New file.
>         * sysdeps/nios2/libm-test-ulps: New file.
>         * sysdeps/nios2/machine-gmon.h: New file.
>         * sysdeps/nios2/math-tests.h: New file.
>         * sysdeps/nios2/math_private.h: New file.
>         * sysdeps/nios2/memusage.h: New file.
>         * sysdeps/nios2/preconfigure: New file.
>         * sysdeps/nios2/s_fma.c: New file.
>         * sysdeps/nios2/s_fmaf.c: New file.
>         * sysdeps/nios2/setjmp.S: New file.
>         * sysdeps/nios2/shlib-versions: New file.
>         * sysdeps/nios2/sotruss-lib.c: New file.
>         * sysdeps/nios2/stackguard-macros.h: New file.
>         * sysdeps/nios2/stackinfo.h: New file.
>         * sysdeps/nios2/start.S: New file.
>         * sysdeps/nios2/sysdep.h: New file.
>         * sysdeps/nios2/tls-macros.h: New file.
>         * sysdeps/nios2/tst-audit.h: New file.
>         * sysdeps/nios2/bits/endian.h: New file.
>         * sysdeps/nios2/bits/fenv.h: New file.
>         * sysdeps/nios2/bits/link.h: New file.
>         * sysdeps/nios2/bits/setjmp.h: New file.
>         * sysdeps/nios2/nptl/pthread_spin_lock.c: New file.
>         * sysdeps/nios2/nptl/pthread_spin_trylock.c: New file.
>         * sysdeps/nios2/nptl/pthreaddef.h: New file.
>         * sysdeps/nios2/nptl/tcb-offsets.sym: New file.
>         * sysdeps/nios2/nptl/tls.h: New file.
>         * sysdeps/nios2/soft-fp/sfp-machine.h: New file.

Patch
diff mbox

diff --git a/sysdeps/nios2/Implies b/sysdeps/nios2/Implies
new file mode 100644
index 0000000..2d7b0d4
--- /dev/null
+++ b/sysdeps/nios2/Implies
@@ -0,0 +1,4 @@ 
+wordsize-32
+ieee754/dbl-64
+ieee754/flt-32
+nios2/soft-fp
diff --git a/sysdeps/nios2/Makefile b/sysdeps/nios2/Makefile
new file mode 100644
index 0000000..2d29aaa
--- /dev/null
+++ b/sysdeps/nios2/Makefile
@@ -0,0 +1,35 @@ 
+# Copyright (C) 1993-2014 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/>.
+
+pic-ccflag = -fpic
+
+# We don't support long doubles as a distinct type.  We don't need to set
+# this variable; it's here mostly for documentational purposes.
+long-double-fcts = no
+
+ifeq ($(subdir),soft-fp)
+sysdep_routines += $(filter-out sqrtsf2,$(gcc-single-routines)) \
+  $(filter-out sqrtdf2,$(gcc-double-routines))
+endif
+
+ifeq ($(subdir),csu)
+gen-as-const-headers += tcb-offsets.sym
+endif
+
+ifeq ($(subdir),debug)
+CFLAGS-backtrace.c += -funwind-tables
+endif
diff --git a/sysdeps/nios2/Subdirs b/sysdeps/nios2/Subdirs
new file mode 100644
index 0000000..87eadf3
--- /dev/null
+++ b/sysdeps/nios2/Subdirs
@@ -0,0 +1 @@ 
+soft-fp
diff --git a/sysdeps/nios2/Versions b/sysdeps/nios2/Versions
new file mode 100644
index 0000000..fd0110e
--- /dev/null
+++ b/sysdeps/nios2/Versions
@@ -0,0 +1,12 @@ 
+libc {
+  GLIBC_2.20 {
+    __adddf3; __addsf3; __divdf3; __divsf3; __eqdf2; __eqsf2; __extendsfdf2;
+    __fixdfdi; __fixdfsi; __fixsfdi; __fixsfsi;
+    __fixunsdfdi; __fixunsdfsi; __fixunssfdi; __fixunssfsi;
+    __floatdidf; __floatdisf; __floatsidf; __floatsisf;
+    __floatundidf; __floatundisf; __floatunsidf; __floatunsisf;
+    __gedf2; __gesf2; __gtdf2; __gtsf2; __ledf2; __lesf2; __ltdf2; __ltsf2;
+    __muldf3; __mulsf3; __nedf2; __nesf2; __negdf2; __negsf2;
+    __subdf3; __subsf3; __truncdfsf2; __unorddf2; __unordsf2;
+  }
+}
diff --git a/sysdeps/nios2/__longjmp.S b/sysdeps/nios2/__longjmp.S
new file mode 100644
index 0000000..b20e095
--- /dev/null
+++ b/sysdeps/nios2/__longjmp.S
@@ -0,0 +1,83 @@ 
+/* Copyright (C) 2014 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 <jmpbuf-offsets.h>
+
+/* __longjmp(jmpbuf, val) */
+
+ENTRY (__longjmp)
+	mov	r2, r5
+	bne	r5, zero, 1f
+	movi	r2, 1
+1:
+#ifdef	PTR_DEMANGLE
+	PTR_MANGLE_GUARD (r3)
+	ldw	r5,  (JB_RA*4)(r4)
+	ldw	r6,  (JB_FP*4)(r4)
+	ldw	r7,  (JB_SP*4)(r4)
+	PTR_DEMANGLE (r5, r5, r3)
+	PTR_DEMANGLE (r6, r6, r3)
+	PTR_DEMANGLE (r7, r7, r3)
+#endif
+
+	cfi_def_cfa (r4, 0)
+	cfi_offset (r16, JB_R16*4)
+	cfi_offset (r17, JB_R17*4)
+	cfi_offset (r18, JB_R18*4)
+	cfi_offset (r19, JB_R19*4)
+	cfi_offset (r20, JB_R20*4)
+	cfi_offset (r21, JB_R21*4)
+	cfi_offset (r22, JB_R22*4)
+#ifdef PTR_DEMANGLE
+	cfi_register (ra, r5)
+	cfi_register (fp, r6)
+	cfi_register (sp, r7)
+#else
+	cfi_offset (ra, JB_RA*4)
+	cfi_offset (fp, JB_FP*4)
+	cfi_offset (sp, JB_SP*4)
+#endif
+	ldw	r16, (JB_R16*4)(r4)
+	ldw	r17, (JB_R17*4)(r4)
+	ldw	r18, (JB_R18*4)(r4)
+	ldw	r19, (JB_R19*4)(r4)
+	ldw	r20, (JB_R20*4)(r4)
+	ldw	r21, (JB_R21*4)(r4)
+	ldw	r22, (JB_R22*4)(r4)
+#ifdef PTR_DEMANGLE
+	mov	ra, r5
+	mov	fp, r6
+	mov	sp, r7
+#else
+	ldw	ra,  (JB_RA*4)(r4)
+	ldw	fp,  (JB_FP*4)(r4)
+	ldw	sp,  (JB_SP*4)(r4)
+#endif
+	cfi_same_value (r16)
+	cfi_same_value (r17)
+	cfi_same_value (r18)
+	cfi_same_value (r19)
+	cfi_same_value (r20)
+	cfi_same_value (r21)
+	cfi_same_value (r22)
+	cfi_same_value (ra)
+	cfi_same_value (fp)
+	cfi_same_value (sp)
+
+	ret
+END (__longjmp)
diff --git a/sysdeps/nios2/abort-instr.h b/sysdeps/nios2/abort-instr.h
new file mode 100644
index 0000000..17502e4
--- /dev/null
+++ b/sysdeps/nios2/abort-instr.h
@@ -0,0 +1,2 @@ 
+/* An instruction which should crash any program is an unused trap.  */
+#define ABORT_INSTRUCTION asm ("trap 31")
diff --git a/sysdeps/nios2/backtrace.c b/sysdeps/nios2/backtrace.c
new file mode 100644
index 0000000..27ce597
--- /dev/null
+++ b/sysdeps/nios2/backtrace.c
@@ -0,0 +1 @@ 
+#include <sysdeps/x86_64/backtrace.c>
diff --git a/sysdeps/nios2/bits/endian.h b/sysdeps/nios2/bits/endian.h
new file mode 100644
index 0000000..164f9e4
--- /dev/null
+++ b/sysdeps/nios2/bits/endian.h
@@ -0,0 +1,12 @@ 
+/* The Nios II architecture has selectable endianness.  */
+
+#ifndef _ENDIAN_H
+# error "Never use <bits/endian.h> directly; include <endian.h> instead."
+#endif
+
+#ifdef __nios2_big_endian__
+# define __BYTE_ORDER __BIG_ENDIAN
+#endif
+#ifdef __nios2_little_endian__
+# define __BYTE_ORDER __LITTLE_ENDIAN
+#endif
diff --git a/sysdeps/nios2/bits/fenv.h b/sysdeps/nios2/bits/fenv.h
new file mode 100644
index 0000000..40fab75
--- /dev/null
+++ b/sysdeps/nios2/bits/fenv.h
@@ -0,0 +1,44 @@ 
+/* Copyright (C) 2012-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _FENV_H
+# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
+#endif
+
+/* The Altera specified Nios II hardware FPU does not support exceptions,
+   nor does the software floating-point support.  */
+#define FE_ALL_EXCEPT	0
+
+/* Nios II supports only round-to-nearest.  The software
+   floating-point support also acts this way.  */
+enum
+  {
+    __FE_UNDEFINED = 0,
+
+    FE_TONEAREST =
+#define FE_TONEAREST	1
+      FE_TONEAREST,
+  };
+
+/* Type representing exception flags. */
+typedef unsigned int fexcept_t;
+
+/* Type representing floating-point environment.  */
+typedef unsigned int fenv_t;
+
+/* If the default argument is used we use this value.  */
+#define FE_DFL_ENV	((const fenv_t *) -1)
diff --git a/sysdeps/nios2/bits/link.h b/sysdeps/nios2/bits/link.h
new file mode 100644
index 0000000..04577e3
--- /dev/null
+++ b/sysdeps/nios2/bits/link.h
@@ -0,0 +1,53 @@ 
+/* Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef	_LINK_H
+# error "Never include <bits/link.h> directly; use <link.h> instead."
+#endif
+
+/* Registers for entry into PLT on Nios II.  */
+typedef struct La_nios2_regs
+{
+  uint32_t lr_reg[4]; /* r4 through r7 */
+  uint32_t lr_ra;
+  uint32_t lr_sp;
+} La_nios2_regs;
+
+/* Return values for calls from PLT on Nios II.  */
+typedef struct La_nios2_retval
+{
+  uint32_t lrv_r2;
+  uint32_t lrv_r3;
+} La_nios2_retval;
+
+__BEGIN_DECLS
+
+extern Elf32_Addr la_nios2_gnu_pltenter (Elf32_Sym *__sym, unsigned int __ndx,
+					 uintptr_t *__refcook,
+					 uintptr_t *__defcook,
+					 La_nios2_regs *__regs,
+					 unsigned int *__flags,
+					 const char *__symname,
+					 long int *__framesizep);
+extern unsigned int la_nios2_gnu_pltexit (Elf32_Sym *__sym, unsigned int __ndx,
+					  uintptr_t *__refcook,
+					  uintptr_t *__defcook,
+					  const La_nios2_regs *__inregs,
+					  La_nios2_retval *__outregs,
+					  const char *symname);
+
+__END_DECLS
diff --git a/sysdeps/nios2/bits/setjmp.h b/sysdeps/nios2/bits/setjmp.h
new file mode 100644
index 0000000..da64c1d
--- /dev/null
+++ b/sysdeps/nios2/bits/setjmp.h
@@ -0,0 +1,30 @@ 
+/* Define the machine-dependent type `jmp_buf'.  Nios II version.
+   Copyright (C) 1992-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _NIOS2_BITS_SETJMP_H
+#define _NIOS2_BITS_SETJMP_H 1
+
+#if !defined(_SETJMP_H) && !defined(_PTHREAD_H)
+# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
+#endif
+
+/* Saves r16-r22 (callee-saved, including GOT pointer), sp (stack pointer),
+   fp (frame pointer), and ra (return address).  */
+typedef int __jmp_buf[10];
+
+#endif /* _NIOS2_BITS_SETJMP_H */
diff --git a/sysdeps/nios2/bsd-_setjmp.S b/sysdeps/nios2/bsd-_setjmp.S
new file mode 100644
index 0000000..4e6a2da
--- /dev/null
+++ b/sysdeps/nios2/bsd-_setjmp.S
@@ -0,0 +1 @@ 
+/* _setjmp is in setjmp.S  */
diff --git a/sysdeps/nios2/bsd-setjmp.S b/sysdeps/nios2/bsd-setjmp.S
new file mode 100644
index 0000000..1da848d
--- /dev/null
+++ b/sysdeps/nios2/bsd-setjmp.S
@@ -0,0 +1 @@ 
+/* setjmp is in setjmp.S  */
diff --git a/sysdeps/nios2/configure b/sysdeps/nios2/configure
new file mode 100644
index 0000000..e820dc2
--- /dev/null
+++ b/sysdeps/nios2/configure
@@ -0,0 +1,162 @@ 
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/nios2.
+
+# Nios II big endian is not yet supported.
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for big endian" >&5
+$as_echo_n "checking for big endian... " >&6; }
+if ${libc_cv_nios2_be+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __nios2_big_endian__
+                      yes
+                     #endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "yes" >/dev/null 2>&1; then :
+  libc_cv_nios2_be=yes
+else
+  libc_cv_nios2_be=no
+fi
+rm -f conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_nios2_be" >&5
+$as_echo "$libc_cv_nios2_be" >&6; }
+if test $libc_cv_nios2_be = yes; then
+  as_fn_error $? "Big endian not supported for Nios II" "$LINENO" 5
+fi
diff --git a/sysdeps/nios2/configure.ac b/sysdeps/nios2/configure.ac
new file mode 100644
index 0000000..f05f438
--- /dev/null
+++ b/sysdeps/nios2/configure.ac
@@ -0,0 +1,13 @@ 
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/nios2.
+
+# Nios II big endian is not yet supported.
+AC_CACHE_CHECK([for big endian],
+  [libc_cv_nios2_be],
+  [AC_EGREP_CPP(yes,[#ifdef __nios2_big_endian__
+                      yes
+                     #endif
+  ], libc_cv_nios2_be=yes, libc_cv_nios2_be=no)])
+if test $libc_cv_nios2_be = yes; then
+  AC_MSG_ERROR([Big endian not supported for Nios II])
+fi
diff --git a/sysdeps/nios2/crti.S b/sysdeps/nios2/crti.S
new file mode 100644
index 0000000..9c9030b
--- /dev/null
+++ b/sysdeps/nios2/crti.S
@@ -0,0 +1,96 @@ 
+/* Special .init and .fini section support for Nios II.
+   Copyright (C) 2012-2014 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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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/>.  */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+   .fini sections and defines global symbols for those addresses, so
+   they can be called as functions.  The symbols _init and _fini are
+   magic and cause the linker to emit DT_INIT and DT_FINI.  */
+
+#include <libc-symbols.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+	weak_extern (PREINIT_FUNCTION)
+#else
+	.hidden PREINIT_FUNCTION
+#endif
+
+	.section .init,"ax",@progbits
+	.align	2
+	.global	_init
+	.type	_init, @function
+_init:
+	addi	sp, sp, -8
+	stw	r22, 0(sp)
+	nextpc	r22
+	1:
+	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	add	r22, r22, r8
+	stw	ra, 4(sp)
+#if PREINIT_FUNCTION_WEAK
+	movhi	r2, %got_hiadj(PREINIT_FUNCTION)
+	addi	r2, r2, %got_lo(PREINIT_FUNCTION)
+	add	r2, r2, r22
+	ldw	r2, 0(r2)
+	beq	r2, zero, .L5
+#endif
+	movhi	r2, %call_hiadj(PREINIT_FUNCTION)
+	addi	r2, r2, %call_lo(PREINIT_FUNCTION)
+	add	r2, r2, r22
+	ldw	r2, 0(r2)
+	callr	r2
+.L5:
+
+	.section .fini,"ax",@progbits
+	.align	2
+	.global	_fini
+	.type	_fini, @function
+_fini:
+	addi	sp, sp, -8
+	stw	r22, 0(sp)
+	nextpc	r22
+	1:
+	movhi	r8, %hiadj(_gp_got - 1b)
+	addi	r8, r8, %lo(_gp_got - 1b)
+	stw	ra, 4(sp)
+	add	r22, r22, r8
diff --git a/sysdeps/nios2/crtn.S b/sysdeps/nios2/crtn.S
new file mode 100644
index 0000000..324c43c
--- /dev/null
+++ b/sysdeps/nios2/crtn.S
@@ -0,0 +1,49 @@ 
+/* Special .init and .fini section support for Nios II.
+   Copyright (C) 2012-2014 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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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/>.  */
+
+/* crtn.S puts function epilogues in the .init and .fini sections
+   corresponding to the prologues in crti.S. */
+
+	.section .init,"ax",@progbits
+	ldw	ra, 4(sp)
+	ldw	r22, 0(sp)
+	addi	sp, sp, 8
+	ret
+
+	.section .fini,"ax",@progbits
+	ldw	ra, 4(sp)
+	ldw	r22, 0(sp)
+	addi	sp, sp, 8
+	ret
diff --git a/sysdeps/nios2/dl-init.c b/sysdeps/nios2/dl-init.c
new file mode 100644
index 0000000..da926de
--- /dev/null
+++ b/sysdeps/nios2/dl-init.c
@@ -0,0 +1,29 @@ 
+/* Copyright (C) 2008-2014 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 <elf/dl-init.c>
+
+unsigned int
+internal_function
+_dl_nios2_get_gp_value (struct link_map *main_map)
+{
+  ElfW(Dyn) *dyn = main_map->l_ld;
+  for (dyn = main_map->l_ld; dyn->d_tag != DT_NULL; ++dyn)
+    if (dyn->d_tag == DT_NIOS2_GP)
+      return (unsigned int)(dyn->d_un.d_ptr);
+  return 0;
+}
diff --git a/sysdeps/nios2/dl-machine.h b/sysdeps/nios2/dl-machine.h
new file mode 100644
index 0000000..33b9cac
--- /dev/null
+++ b/sysdeps/nios2/dl-machine.h
@@ -0,0 +1,335 @@ 
+/* Machine-dependent ELF dynamic relocation inline functions.  Nios II version.
+   Copyright (C) 1995-2014 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 dl_machine_h
+#define dl_machine_h
+
+#define ELF_MACHINE_NAME "nios2"
+
+#include <string.h>
+#include <link.h>
+#include <dl-tls.h>
+
+/* Return nonzero iff ELF header is compatible with the running host.  */
+static inline int
+elf_machine_matches_host (const Elf32_Ehdr *ehdr)
+{
+  return ehdr->e_machine == EM_ALTERA_NIOS2;
+}
+
+
+/* Return the link-time address of _DYNAMIC.  Conveniently, this is the
+   first element of the GOT.  */
+static inline Elf32_Addr
+elf_machine_dynamic (void)
+{
+  Elf32_Addr *dynamic;
+  int tmp;
+  asm ("nextpc\t%0\n\t"
+       "1: movhi\t%1, %%hiadj(_GLOBAL_OFFSET_TABLE_ - 1b)\n\t"
+       "addi\t%1, %1, %%lo(_GLOBAL_OFFSET_TABLE_ - 1b)\n\t"
+       "add\t%0, %0, %1\n"
+       : "=r" (dynamic), "=r" (tmp));
+  return *dynamic;
+}
+
+
+/* Return the run-time load address of the shared object.  */
+static inline Elf32_Addr
+elf_machine_load_address (void)
+{
+  Elf32_Addr result;
+  int tmp;
+  asm ("nextpc\t%0\n\t"
+       "1: movhi\t%1, %%hiadj(1b)\n\t"
+       "addi\t%1, %1, %%lo(1b)\n\t"
+       "sub\t%0, %0, %1\n"
+       : "=r" (result), "=r" (tmp));
+  return result;
+}
+
+/* Set up the loaded object described by L so its unrelocated PLT
+   entries will jump to the on-demand fixup code in dl-runtime.c.  */
+
+static inline int __attribute__ ((always_inline))
+elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+{
+  extern void _dl_runtime_resolve (Elf32_Word);
+
+  if (l->l_info[DT_JMPREL] && lazy)
+    {
+      /* The GOT entries for functions in the PLT have not yet been filled
+         in.  Their initial contents will arrange when called to load r15 with
+         an offset into the .got section, load r14 with
+	 _GLOBAL_OFFSET_TABLE_[1], and then jump to _GLOBAL_OFFSET_TABLE[2].
+      */
+      Elf32_Addr *got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
+      got[1] = (Elf32_Addr) l;	/* Identify this shared object.  */
+
+      /* This function will get called to fix up the GOT entry indicated by
+	 the offset on the stack, and then jump to the resolved address.  */
+      got[2] = (Elf32_Addr) &_dl_runtime_resolve;
+    }
+
+  return lazy;
+}
+
+/* Initial entry point code for the dynamic linker.
+   The C function `_dl_start' is the real entry point;
+   its return value is the user program's entry point.  */
+
+#define RTLD_START asm ("\
+.text\n\
+.globl _start\n\
+.type _start, %function\n\
+_start:\n\
+        /* At start time, all the args are on the stack.  */\n\
+        mov r4, sp\n\
+\n\
+        /* Start the calculation of the GOT pointer.  */\n\
+        nextpc r22\n\
+1:      movhi r8, %hiadj(_gp_got - 1b)\n\
+        addi r8, r8, %lo(_gp_got - 1b)\n\
+\n\
+        /* Figure out where _dl_start will need to return to.  */\n\
+        movhi ra, %hiadj(2f - 1b)\n\
+        addi ra, ra, %lo(2f - 1b)\n\
+        add ra, ra, r22\n\
+\n\
+        /* Finish the calculation of the GOT pointer.  */\n\
+        add r22, r22, r8\n\
+\n\
+        br _dl_start\n\
+\n\
+        /* Save the returned user entry point.  */\n\
+2:      mov r16, r2\n\
+\n\
+        /* Initialize gp.  */\n\
+        ldw r4, %got(_rtld_local)(r22)\n\
+        ldw r4, 0(r4)\n\
+        ldw r8, %call(_dl_nios2_get_gp_value)(r22)\n\
+        callr r8\n\
+        mov gp, r2\n\
+\n\
+        /* Find the number of arguments to skip.  */\n\
+        ldw r8, %got(_dl_skip_args)(r22)\n\
+        ldw r8, 0(r8)\n\
+\n\
+        /* Find the main_map from the GOT.  */\n\
+        ldw r4, %got(_rtld_local)(r22)\n\
+        ldw r4, 0(r4)\n\
+\n\
+        /* Find argc.  */\n\
+        ldw r5, 0(sp)\n\
+        sub r5, r5, r8\n\
+        stw r5, 0(sp)\n\
+\n\
+        /* Find the first unskipped argument.  */\n\
+        slli r8, r8, 2\n\
+        addi r6, sp, 4\n\
+        add r9, r6, r8\n\
+        mov r10, r6\n\
+\n\
+        /* Shuffle argv down.  */\n\
+3:      ldw r11, 0(r9)\n\
+        stw r11, 0(r10)\n\
+        addi r9, r9, 4\n\
+        addi r10, r10, 4\n\
+        bne r11, zero, 3b\n\
+\n\
+        /* Shuffle envp down.  */\n\
+        mov r7, r10\n\
+4:      ldw r11, 0(r9)\n\
+        stw r11, 0(r10)\n\
+        addi r9, r9, 4\n\
+        addi r10, r10, 4\n\
+        bne r11, zero, 4b\n\
+\n\
+        /* Shuffle auxv down.  */\n\
+5:      ldw r11, 4(r9)\n\
+        stw r11, 4(r10)\n\
+        ldw r11, 0(r9)\n\
+        stw r11, 0(r10)\n\
+        addi r9, r9, 8\n\
+        addi r10, r10, 8\n\
+        bne r11, zero, 5b\n\
+\n\
+        /* Update _dl_argv.  */\n\
+        ldw r2, %got(_dl_argv)(r22)\n\
+        stw r6, 0(r2)\n\
+\n\
+        /* Call _dl_init through the PLT.  */\n\
+        ldw r8, %call(_dl_init)(r22)\n\
+        callr r8\n\
+\n\
+        /* Find the finalization function.  */\n\
+        ldw r4, %got(_dl_fini)(r22)\n\
+\n\
+        /* Jump to the user's entry point.  */\n\
+        jmp r16\n\
+");
+
+/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
+   PLT entries should not be allowed to define the value.
+   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
+   of the main executable's symbols, as for a COPY reloc.  */
+#define elf_machine_type_class(type)				\
+  ((((type) == R_NIOS2_JUMP_SLOT				\
+     || (type) == R_NIOS2_TLS_DTPMOD				\
+     || (type) == R_NIOS2_TLS_DTPREL				\
+     || (type) == R_NIOS2_TLS_TPREL) * ELF_RTYPE_CLASS_PLT)	\
+   | (((type) == R_NIOS2_COPY) * ELF_RTYPE_CLASS_COPY))
+
+/* A reloc type used for ld.so cmdline arg lookups to reject PLT entries.  */
+#define ELF_MACHINE_JMP_SLOT  R_NIOS2_JUMP_SLOT
+
+/* The Nios II never uses Elf32_Rel relocations.  */
+#define ELF_MACHINE_NO_REL 1
+#define ELF_MACHINE_NO_RELA 0
+
+/* Fixup a PLT entry to bounce directly to the function at VALUE.  */
+
+static inline Elf32_Addr
+elf_machine_fixup_plt (struct link_map *map, lookup_t t,
+		       const Elf32_Rela *reloc,
+		       Elf32_Addr *reloc_addr, Elf32_Addr value)
+{
+  return *reloc_addr = value;
+}
+
+/* Return the final value of a plt relocation.  */
+static inline Elf32_Addr
+elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
+                       Elf32_Addr value)
+{
+  return value;
+}
+
+/* Names of the architecture-specific auditing callback functions.  */
+#define ARCH_LA_PLTENTER nios2_gnu_pltenter
+#define ARCH_LA_PLTEXIT nios2_gnu_pltexit
+
+#endif /* dl_machine_h */
+
+#ifdef RESOLVE_MAP
+
+/* Perform the relocation specified by RELOC and SYM (which is fully resolved).
+   LOADADDR is the load address of the object; INFO is an array indexed
+   by DT_* of the .dynamic section info.  */
+
+auto inline void __attribute__ ((always_inline))
+elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc,
+                  const ElfW(Sym) *sym, const struct r_found_version *version,
+                  void *const reloc_addr_arg, int skip_ifunc)
+{
+  Elf32_Addr *const reloc_addr = reloc_addr_arg;
+  const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
+
+  if (__glibc_unlikely (r_type == R_NIOS2_RELATIVE))
+    *reloc_addr = map->l_addr + reloc->r_addend;
+  else if (__glibc_unlikely (r_type == R_NIOS2_NONE))
+    return;
+  else
+    {
+      const Elf32_Sym *const refsym = sym;
+      struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
+      Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
+
+      switch (r_type)
+	{
+        case R_NIOS2_COPY:
+          if (sym == NULL)
+            /* This can happen in trace mode if an object could not be
+               found.  */
+            break;
+          if (sym->st_size > refsym->st_size
+              || (sym->st_size < refsym->st_size && GLRO(dl_verbose)))
+            {
+              const char *strtab;
+
+              strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
+              _dl_error_printf ("\
+%s: Symbol `%s' has different size in shared object, consider re-linking\n",
+				rtld_progname ?: "<program name unknown>",
+				strtab + refsym->st_name);
+            }
+          memcpy (reloc_addr_arg, (void *) value,
+                  MIN (sym->st_size, refsym->st_size));
+          break;
+	case R_NIOS2_GLOB_DAT:
+	case R_NIOS2_JUMP_SLOT:
+# ifdef RTLD_BOOTSTRAP
+          /* Fix weak undefined references.  */
+          if (sym != NULL && sym->st_value == 0)
+            *reloc_addr = 0;
+          else
+# endif
+            *reloc_addr = value;
+          break;
+#ifndef RTLD_BOOTSTRAP
+        case R_NIOS2_TLS_DTPMOD:
+          /* Get the information from the link map returned by the
+             resolv function.  */
+          if (sym_map != NULL)
+            *reloc_addr = sym_map->l_tls_modid;
+          break;
+
+        case R_NIOS2_TLS_DTPREL:
+          *reloc_addr = reloc->r_addend + TLS_DTPREL_VALUE(sym);
+          break;
+
+        case R_NIOS2_TLS_TPREL:
+          if (sym != NULL)
+            {
+              CHECK_STATIC_TLS (map, sym_map);
+              *reloc_addr = reloc->r_addend + TLS_TPREL_VALUE(sym_map, sym);
+            }
+          break;
+#endif
+        case R_NIOS2_BFD_RELOC_32:
+          *reloc_addr = value + reloc->r_addend;
+          break;
+
+	default:
+          _dl_reloc_bad_type (map, r_type, 0);
+          break;
+	}
+    }
+}
+
+auto inline void __attribute__((always_inline))
+elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc,
+			   void *const reloc_addr_arg)
+{
+  Elf32_Addr *const reloc_addr = reloc_addr_arg;
+  *reloc_addr = l_addr + reloc->r_addend;
+}
+
+auto inline void __attribute__((always_inline))
+elf_machine_lazy_rel (struct link_map *map,
+		      ElfW(Addr) l_addr, const ElfW(Rela) *reloc,
+		      int skip_ifunc)
+{
+  Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
+  if (ELF32_R_TYPE (reloc->r_info) == R_NIOS2_JUMP_SLOT)
+    *reloc_addr += l_addr;
+  else
+    _dl_reloc_bad_type (map, ELF32_R_TYPE (reloc->r_info), 1);
+}
+
+#endif /* RESOLVE_MAP */
diff --git a/sysdeps/nios2/dl-sysdep.h b/sysdeps/nios2/dl-sysdep.h
new file mode 100644
index 0000000..ae12670
--- /dev/null
+++ b/sysdeps/nios2/dl-sysdep.h
@@ -0,0 +1,23 @@ 
+/* System-specific settings for dynamic linker code.  Nios II version.
+   Copyright (C) 2009-2014 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_next <dl-sysdep.h>
+
+/* _dl_argv cannot be attribute_relro, because _dl_start_user
+   might write into it after _dl_start returns.  */
+#define DL_ARGV_NOT_RELRO 1
diff --git a/sysdeps/nios2/dl-tls.h b/sysdeps/nios2/dl-tls.h
new file mode 100644
index 0000000..61483c4
--- /dev/null
+++ b/sysdeps/nios2/dl-tls.h
@@ -0,0 +1,48 @@ 
+/* Thread-local storage handling in the ELF dynamic linker.  Nios II version.
+   Copyright (C) 2012-2014 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/>.  */
+
+
+/* Type used for the representation of TLS information in the GOT.  */
+typedef struct
+{
+  unsigned long int ti_module;
+  unsigned long int ti_offset;
+} tls_index;
+
+/* The thread pointer points 0x7000 past the first static TLS block.  */
+#define TLS_TP_OFFSET		0x7000
+
+/* Dynamic thread vector pointers point 0x8000 past the start of each
+   TLS block.  */
+#define TLS_DTV_OFFSET		0x8000
+
+/* Compute the value for a GOTTPREL reloc.  */
+#define TLS_TPREL_VALUE(sym_map, sym) \
+  ((sym_map)->l_tls_offset + (sym)->st_value - TLS_TP_OFFSET)
+
+/* Compute the value for a DTPREL reloc.  */
+#define TLS_DTPREL_VALUE(sym) \
+  ((sym)->st_value - TLS_DTV_OFFSET)
+
+extern void *__tls_get_addr (tls_index *ti);
+
+# define GET_ADDR_OFFSET	(ti->ti_offset + TLS_DTV_OFFSET)
+# define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)
+
+/* Value used for dtv entries for which the allocation is delayed.  */
+#define TLS_DTV_UNALLOCATED	((void *) -1l)
diff --git a/sysdeps/nios2/dl-trampoline.S b/sysdeps/nios2/dl-trampoline.S
new file mode 100644
index 0000000..d6917e3
--- /dev/null
+++ b/sysdeps/nios2/dl-trampoline.S
@@ -0,0 +1,79 @@ 
+/* PLT trampolines.  Nios II version.
+   Copyright (C) 2005-2014 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 <libc-symbols.h>
+
+	.text
+	.globl _dl_runtime_resolve
+	cfi_startproc
+_dl_runtime_resolve:
+/* The runtime resolver receives the original function arguments in r4
+   through r7, the shared library identifier from GOT[1]? in r14, and the
+   relocation index times four in r15. It updates the corresponding PLT GOT
+   entry so that the PLT entry will transfer control directly to the target
+   in the future, and then transfers control to the target. */
+	/* Save arguments and return address.  */
+	subi sp, sp, 28
+	cfi_adjust_cfa_offset (28)
+	stw r22, 24(sp)
+	cfi_rel_offset (r22, 24)
+	stw r8, 20(sp)  /* save r8, because this might be a call to mcount */
+	cfi_rel_offset (r8, 20)
+	stw r7, 16(sp)
+	cfi_rel_offset (r7, 16)
+	stw r6, 12(sp)
+	cfi_rel_offset (r6, 12)
+	stw r5, 8(sp)
+	cfi_rel_offset (r5, 8)
+	stw r4, 4(sp)
+	cfi_rel_offset (r4, 4)
+	stw ra, 0(sp)
+	cfi_rel_offset (ra, 0)
+
+	/* Get pointer to linker struct.  */
+	mov r4, r14
+
+	/* Get the relocation offset.  We're given a multiple of 4 and
+	   need a multiple of 12, so multiply by 3. */
+	slli r5, r15, 1
+	add r5, r5, r15
+
+	/* Call the fixup routine.  */
+	nextpc r22
+1:	movhi r2, %hiadj(_gp_got - 1b)
+	addi r2, r2, %lo(_gp_got - 1b)
+	add r22, r22, r2
+	ldw r2, %call(_dl_fixup)(r22)
+	callr r2
+
+	/* Restore the arguments and return address.  */
+	ldw ra, 0(sp)
+	ldw r4, 4(sp)
+	ldw r5, 8(sp)
+	ldw r6, 12(sp)
+	ldw r7, 16(sp)
+	ldw r8, 20(sp)
+	ldw r22, 24(sp)
+	addi sp, sp, 28
+	cfi_adjust_cfa_offset (-28)
+
+	/* Jump to the newly found address.  */
+	jmp r2
+
+	cfi_endproc
diff --git a/sysdeps/nios2/gccframe.h b/sysdeps/nios2/gccframe.h
new file mode 100644
index 0000000..2898897
--- /dev/null
+++ b/sysdeps/nios2/gccframe.h
@@ -0,0 +1,20 @@ 
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FIRST_PSEUDO_REGISTER 40
+
+#include <sysdeps/generic/gccframe.h>
diff --git a/sysdeps/nios2/gmp-mparam.h b/sysdeps/nios2/gmp-mparam.h
new file mode 100644
index 0000000..876e49e
--- /dev/null
+++ b/sysdeps/nios2/gmp-mparam.h
@@ -0,0 +1,28 @@ 
+/* gmp-mparam.h -- Compiler/machine parameter header file.
+
+Copyright (C) 2014 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP 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 MP 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 MP Library; see the file COPYING.LIB.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#define BITS_PER_MP_LIMB 32
+#define BYTES_PER_MP_LIMB 4
+#define BITS_PER_LONGINT 32
+#define BITS_PER_INT 32
+#define BITS_PER_SHORTINT 16
+#define BITS_PER_CHAR 8
+
+#define IEEE_DOUBLE_BIG_ENDIAN 0
diff --git a/sysdeps/nios2/jmpbuf-offsets.h b/sysdeps/nios2/jmpbuf-offsets.h
new file mode 100644
index 0000000..ce6c0fc
--- /dev/null
+++ b/sysdeps/nios2/jmpbuf-offsets.h
@@ -0,0 +1,48 @@ 
+/* Private macros for accessing __jmp_buf contents.  Nios II version.
+   Copyright (C) 2006-2014 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/>.  */
+
+/* Save offsets within __jmp_buf.  */
+#define JB_R16 0
+#define JB_R17 1
+#define JB_R18 2
+#define JB_R19 3
+#define JB_R20 4
+#define JB_R21 5
+#define JB_R22 6
+#define JB_SP  7
+#define JB_FP  8
+#define JB_RA  9
+
+#ifndef  __ASSEMBLER__
+#include <setjmp.h>
+#include <stdint.h>
+#include <sysdep.h>
+
+static inline uintptr_t __attribute__ ((unused))
+_jmpbuf_sp (__jmp_buf jmpbuf)
+{
+  uintptr_t sp = jmpbuf[JB_SP];
+#ifdef PTR_DEMANGLE
+  PTR_DEMANGLE (sp);
+#endif
+  return sp;
+}
+#endif
+
+/* Helper for generic ____longjmp_chk(). */
+#define JB_FRAME_ADDRESS(buf) ((void *) _jmpbuf_sp (buf))
diff --git a/sysdeps/nios2/jmpbuf-unwind.h b/sysdeps/nios2/jmpbuf-unwind.h
new file mode 100644
index 0000000..d433c9a
--- /dev/null
+++ b/sysdeps/nios2/jmpbuf-unwind.h
@@ -0,0 +1,36 @@ 
+/* Copyright (C) 2005-2014 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 <setjmp.h>
+#include <jmpbuf-offsets.h>
+#include <stdint.h>
+#include <unwind.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+  ((void *) (address) < (void *) demangle (jmpbuf[JB_SP]))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+  _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+  ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf_sp (_jmpbuf) - (_adj)))
+
+/* We use the normal longjmp for unwinding.  */
+#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/sysdeps/nios2/ldsodefs.h b/sysdeps/nios2/ldsodefs.h
new file mode 100644
index 0000000..08d96a3
--- /dev/null
+++ b/sysdeps/nios2/ldsodefs.h
@@ -0,0 +1,41 @@ 
+/* Run-time dynamic linker data structures for loaded ELF shared objects.
+   Copyright (C) 2000-2014 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_LDSODEFS_H
+#define _NIOS2_LDSODEFS_H 1
+
+struct La_nios2_regs;
+struct La_nios2_retval;
+
+#define ARCH_PLTENTER_MEMBERS						    \
+    Elf32_Addr (*nios2_gnu_pltenter) (Elf32_Sym *, unsigned int,	    \
+				      uintptr_t *, uintptr_t *,	            \
+				      const struct La_nios2_regs *,         \
+				      unsigned int *, const char *name,     \
+				      long int *framesizep);
+
+#define ARCH_PLTEXIT_MEMBERS						    \
+    unsigned int (*nios2_gnu_pltexit) (Elf64_Sym *, unsigned int,	    \
+				       uintptr_t *, uintptr_t *,	    \
+				       const struct La_nios2_regs *,        \
+				       struct La_nios2_retval *,	    \
+				       const char *);
+
+#include_next <ldsodefs.h>
+
+#endif
diff --git a/sysdeps/nios2/libc-tls.c b/sysdeps/nios2/libc-tls.c
new file mode 100644
index 0000000..b88c018
--- /dev/null
+++ b/sysdeps/nios2/libc-tls.c
@@ -0,0 +1,32 @@ 
+/* Thread-local storage handling in the ELF dynamic linker.  Nios II version.
+   Copyright (C) 2005-2014 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 <csu/libc-tls.c>
+#include <dl-tls.h>
+
+/* On Nios II, linker optimizations are not required, so __tls_get_addr
+   can be called even in statically linked binaries.  In this case module
+   must be always 1 and PT_TLS segment exist in the binary, otherwise it
+   would not link.  */
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer.val + GET_ADDR_OFFSET;
+}
diff --git a/sysdeps/nios2/libm-test-ulps b/sysdeps/nios2/libm-test-ulps
new file mode 100644
index 0000000..02daaeb
--- /dev/null
+++ b/sysdeps/nios2/libm-test-ulps
@@ -0,0 +1,337 @@ 
+# Begin of automatic generation
+
+# Maximal error of functions:
+Function: "acosh":
+double: 1
+idouble: 1
+
+Function: "asinh":
+double: 1
+float: 1
+ifloat: 1
+
+Function: "atan2":
+float: 1
+ifloat: 1
+
+Function: "atanh":
+float: 1
+ifloat: 1
+
+Function: Real part of "cacos":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Imaginary part of "cacos":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Real part of "cacosh":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Imaginary part of "cacosh":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Real part of "casin":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "casin":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Real part of "casinh":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Imaginary part of "casinh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "catan":
+float: 1
+ifloat: 1
+
+Function: Imaginary part of "catan":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "catanh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "catanh":
+float: 1
+ifloat: 1
+
+Function: "cbrt":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "ccos":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "ccos":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "ccosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "ccosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "cexp":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+
+Function: Imaginary part of "cexp":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: Real part of "clog":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "clog":
+float: 1
+ifloat: 1
+
+Function: Real part of "clog10":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: Imaginary part of "clog10":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "cos":
+float: 1
+ifloat: 1
+
+Function: "cosh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "cpow":
+double: 2
+float: 4
+idouble: 2
+ifloat: 4
+
+Function: Imaginary part of "cpow":
+float: 2
+ifloat: 2
+
+Function: Real part of "csin":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "csinh":
+float: 1
+ifloat: 1
+
+Function: Imaginary part of "csinh":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "csqrt":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "csqrt":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Real part of "ctan":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: Imaginary part of "ctan":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+
+Function: Real part of "ctanh":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+
+Function: Imaginary part of "ctanh":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: "erf":
+double: 1
+idouble: 1
+
+Function: "erfc":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "exp10":
+double: 1
+idouble: 1
+
+Function: "expm1":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "gamma":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "hypot":
+double: 1
+idouble: 1
+
+Function: "j0":
+double: 2
+float: 2
+idouble: 2
+ifloat: 2
+
+Function: "j1":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: "jn":
+double: 4
+float: 4
+idouble: 4
+ifloat: 4
+
+Function: "lgamma":
+double: 1
+float: 1
+idouble: 1
+ifloat: 1
+
+Function: "log":
+float: 1
+ifloat: 1
+
+Function: "log10":
+double: 1
+float: 2
+idouble: 1
+ifloat: 2
+
+Function: "log1p":
+float: 1
+ifloat: 1
+
+Function: "pow":
+float: 1
+ifloat: 1
+
+Function: "pow10":
+double: 1
+idouble: 1
+
+Function: "pow_tonearest":
+float: 1
+ifloat: 1
+
+Function: "sin":
+float: 1
+ifloat: 1
+
+Function: "sincos":
+float: 1
+ifloat: 1
+
+Function: "tgamma":
+double: 4
+float: 3
+idouble: 4
+ifloat: 3
+
+Function: "y0":
+double: 2
+float: 1
+idouble: 2
+ifloat: 1
+
+Function: "y1":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+
+Function: "yn":
+double: 3
+float: 2
+idouble: 3
+ifloat: 2
+
+# end of automatic generation
diff --git a/sysdeps/nios2/machine-gmon.h b/sysdeps/nios2/machine-gmon.h
new file mode 100644
index 0000000..2038c57
--- /dev/null
+++ b/sysdeps/nios2/machine-gmon.h
@@ -0,0 +1,65 @@ 
+/* Machine-dependent definitions for profiling support.  Nios II version.
+   Copyright (C) 1996-2014 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>
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+static void __attribute_used__ __mcount_internal (u_long frompc, u_long selfpc)
+
+/* This macro/func MUST save r4, r5, r6, r7 and r8 because the compiler inserts
+   blind calls to mcount(), ignoring the fact that mcount may clobber
+   registers; therefore, mcount may NOT clobber registers.  */
+
+#if defined(__PIC__) || defined(PIC)
+#define NIOS2_MCOUNT_CALL				      \
+  "nextpc r3\n\t"					      \
+  "1: movhi r2, %hiadj(_gp_got - 1b)\n\t"		      \
+  "addi r2, r2, %lo(_gp_got - 1b)\n\t"			      \
+  "add r2, r2, r3\n\t"						\
+  "ldw r2, %call(__mcount_internal)(r2)\n\t"			\
+  "callr r2\n\t"
+#else
+#define NIOS2_MCOUNT_CALL			\
+  "call\tmcount_internal\n\t"
+#endif
+
+#define MCOUNT						\
+  asm (".globl _mcount\n\t"				\
+       ".type _mcount,@function\n\t"			\
+       "_mcount:\n\t"					\
+       "subi sp, sp, 24\n\t"				\
+       "stw ra, 20(sp)\n\t"				\
+       "stw r8, 16(sp)\n\t"				\
+       "stw r7, 12(sp)\n\t"				\
+       "stw r6, 8(sp)\n\t"				\
+       "stw r5, 4(sp)\n\t"				\
+       "stw r4, 0(sp)\n\t"				\
+       "mov r4, r8\n\t"					\
+       "mov r5, ra\n\t"					\
+       NIOS2_MCOUNT_CALL				\
+       "ldw ra, 20(sp)\n\t"				\
+       "ldw r8, 16(sp)\n\t"				\
+       "ldw r7, 12(sp)\n\t"				\
+       "ldw r6, 8(sp)\n\t"				\
+       "ldw r5, 4(sp)\n\t"				\
+       "ldw r4, 0(sp)\n\t"				\
+       "addi sp, sp, 24\n\t"				\
+       "ret\n\t"					\
+       ".size _mcount, . - _mcount\n\t"			\
+       );
+
diff --git a/sysdeps/nios2/math-tests.h b/sysdeps/nios2/math-tests.h
new file mode 100644
index 0000000..42cfa15
--- /dev/null
+++ b/sysdeps/nios2/math-tests.h
@@ -0,0 +1,28 @@ 
+/* Configuration for math tests.  Nios II version.
+   Copyright (C) 2014 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/>.  */
+
+/* Current Nios II soft-float does not support exceptions or rounding
+   modes.  */
+#define ROUNDING_TESTS_float(MODE)	((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_double(MODE)	((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_long_double(MODE)	((MODE) == FE_TONEAREST)
+#define EXCEPTION_TESTS_float	0
+#define EXCEPTION_TESTS_double	0
+#define EXCEPTION_TESTS_long_double	0
+
+#include_next <math-tests.h>
diff --git a/sysdeps/nios2/math_private.h b/sysdeps/nios2/math_private.h
new file mode 100644
index 0000000..07f37d5
--- /dev/null
+++ b/sysdeps/nios2/math_private.h
@@ -0,0 +1,32 @@ 
+#ifndef _MATH_PRIVATE_H
+
+/* Suppress use of exceptions here to avoid build errors if the FE_*
+   macros aren't defined. Only allow rounding modes implemented for Nios II.
+
+   This does mean that some code will silently fail to report exceptions,
+   set rounding mode as expected, etc., but it allows math code to compile
+   that otherwise wouldn't (such as math/s_fma.c) and so is valuable.
+
+   We intentionally ignore the "exception" arguments of functions that
+   take an exception, since we can't even evaluate the argument
+   without causing a build failure.  The extra level of statement
+   expression wrapping avoids "statement with no effect" warnings.
+   Since the callers don't check for errors anyway, we just claim
+   success in every case.
+
+   The overrides for libc_ functions must happen before we include
+   the generic math_private.h, and the overrides for regular
+   <fenv.h> functions must happen afterwards, to avoid clashing with
+   the declarations of those functions.  */
+
+#define libc_fesetround(rnd)                   ({ 0; })
+#define libc_fetestexcept(exc)                 ({ 0; })
+#define libc_feholdexcept_setround(env, exc)   ({ (void) (env); 0; })
+#define libc_feupdateenv_test(env, exc)        ({ (void) (env); 0; })
+
+#include_next <math_private.h>
+
+#define feraiseexcept(excepts)                 ({ 0; })
+#define feclearexcept(exc)                     ({ 0; })
+
+#endif
diff --git a/sysdeps/nios2/memusage.h b/sysdeps/nios2/memusage.h
new file mode 100644
index 0000000..fe0217d
--- /dev/null
+++ b/sysdeps/nios2/memusage.h
@@ -0,0 +1,22 @@ 
+/* Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define GETSP() ({ register uintptr_t stack_ptr asm ("%sp"); stack_ptr; })
+
+#define uatomic32_t unsigned int
+
+#include <sysdeps/generic/memusage.h>
diff --git a/sysdeps/nios2/nptl/pthread_spin_lock.c b/sysdeps/nios2/nptl/pthread_spin_lock.c
new file mode 100644
index 0000000..7a7e56a
--- /dev/null
+++ b/sysdeps/nios2/nptl/pthread_spin_lock.c
@@ -0,0 +1,29 @@ 
+/* Copyright (C) 2005-2014 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 <atomic.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  while (atomic_compare_and_exchange_val_acq (lock, 1, 0) != 0)
+   while (*lock != 0)
+    ;
+
+  return 0;
+}
diff --git a/sysdeps/nios2/nptl/pthread_spin_trylock.c b/sysdeps/nios2/nptl/pthread_spin_trylock.c
new file mode 100644
index 0000000..1391951
--- /dev/null
+++ b/sysdeps/nios2/nptl/pthread_spin_trylock.c
@@ -0,0 +1,26 @@ 
+/* Copyright (C) 2005-2014 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 <errno.h>
+#include <atomic.h>
+#include "pthreadP.h"
+
+int
+pthread_spin_trylock (pthread_spinlock_t *lock)
+{
+  return atomic_compare_and_exchange_val_acq (lock, 1, 0) ? EBUSY : 0;
+}
diff --git a/sysdeps/nios2/nptl/pthreaddef.h b/sysdeps/nios2/nptl/pthreaddef.h
new file mode 100644
index 0000000..9dc0115
--- /dev/null
+++ b/sysdeps/nios2/nptl/pthreaddef.h
@@ -0,0 +1,35 @@ 
+/* Copyright (C) 2002-2014 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/>.  */
+
+/* Default stack size.  */
+#define ARCH_STACK_DEFAULT_SIZE	(2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning.  */
+#define STACK_ALIGN		4
+
+/* Minimal stack size after allocating thread descriptor and guard size.  */
+#define MINIMAL_REST_STACK	2048
+
+/* Alignment requirement for TCB.  */
+#define TCB_ALIGNMENT		4
+
+/* Location of current stack frame.  */
+#define CURRENT_STACK_FRAME	__builtin_frame_address (0)
+
+/* XXX Until we have a better place keep the definitions here.  */
+#define __exit_thread_inline(val) \
+  INLINE_SYSCALL (exit, 1, (val))
diff --git a/sysdeps/nios2/nptl/tcb-offsets.sym b/sysdeps/nios2/nptl/tcb-offsets.sym
new file mode 100644
index 0000000..d9ae952
--- /dev/null
+++ b/sysdeps/nios2/nptl/tcb-offsets.sym
@@ -0,0 +1,14 @@ 
+#include <sysdep.h>
+#include <tls.h>
+
+--
+
+-- Abuse tls.h macros to derive offsets relative to the thread register.
+# undef __thread_self
+# define __thread_self          ((void *) 0)
+# define thread_offsetof(mem)   ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
+
+MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
+PID_OFFSET			thread_offsetof (pid)
+TID_OFFSET			thread_offsetof (tid)
+POINTER_GUARD			(offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
diff --git a/sysdeps/nios2/nptl/tls.h b/sysdeps/nios2/nptl/tls.h
new file mode 100644
index 0000000..38c2275
--- /dev/null
+++ b/sysdeps/nios2/nptl/tls.h
@@ -0,0 +1,170 @@ 
+/* Definition for thread-local data handling.  NPTL/Nios II version.
+   Copyright (C) 2012-2014 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 _TLS_H
+#define _TLS_H	1
+
+#include <dl-sysdep.h>
+
+#ifndef __ASSEMBLER__
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+
+/* Type for the dtv.  */
+typedef union dtv
+{
+  size_t counter;
+  struct
+  {
+    void *val;
+    bool is_static;
+  } pointer;
+} dtv_t;
+
+#else /* __ASSEMBLER__ */
+# include <tcb-offsets.h>
+#endif /* __ASSEMBLER__ */
+
+
+#ifndef __ASSEMBLER__
+
+/* Get system call information.  */
+# include <sysdep.h>
+
+/* The TP points to the start of the thread blocks.  */
+# define TLS_DTV_AT_TP	1
+# define TLS_TCB_AT_TP	0
+
+/* Get the thread descriptor definition.  */
+# include <nptl/descr.h>
+
+typedef struct
+{
+  dtv_t *dtv;
+  uintptr_t pointer_guard;
+  unsigned spare[6];
+} tcbhead_t;
+
+register struct pthread *__thread_self __asm__("r23");
+
+#define READ_THREAD_POINTER() ((void *) __thread_self)
+
+/* This is the size of the initial TCB.  Because our TCB is before the thread
+   pointer, we don't need this.  */
+# define TLS_INIT_TCB_SIZE	0
+
+/* Alignment requirements for the initial TCB.  */
+# define TLS_INIT_TCB_ALIGN	__alignof__ (struct pthread)
+
+/* This is the size of the TCB.  Because our TCB is before the thread
+   pointer, we don't need this.  */
+# define TLS_TCB_SIZE		0
+
+/* Alignment requirements for the TCB.  */
+# define TLS_TCB_ALIGN		__alignof__ (struct pthread)
+
+/* This is the size we need before TCB - actually, it includes the TCB.  */
+# define TLS_PRE_TCB_SIZE \
+  (sizeof (struct pthread)						      \
+   + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
+
+/* The thread pointer (in hardware register r23) points to the end of
+   the TCB + 0x7000, as for PowerPC and MIPS.  */
+# define TLS_TCB_OFFSET 0x7000
+
+/* Install the dtv pointer.  The pointer passed is to the element with
+   index -1 which contain the length.  */
+# define INSTALL_DTV(tcbp, dtvp) \
+  (((tcbhead_t *) (tcbp))[-1].dtv = (dtvp) + 1)
+
+/* Install new dtv for current thread.  */
+# define INSTALL_NEW_DTV(dtv) \
+  (THREAD_DTV() = (dtv))
+
+/* Return dtv of given thread descriptor.  */
+# define GET_DTV(tcbp) \
+  (((tcbhead_t *) (tcbp))[-1].dtv)
+
+/* Code to initially initialize the thread pointer.  */
+# define TLS_INIT_TP(tcbp, secondcall) \
+  (__thread_self = (struct pthread *) ((char *) tcbp + TLS_TCB_OFFSET), NULL)
+
+/* Return the address of the dtv for the current thread.  */
+# define THREAD_DTV() \
+  (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))[-1].dtv)
+
+/* Return the thread descriptor for the current thread.  */
+# define THREAD_SELF \
+ ((struct pthread *) (READ_THREAD_POINTER ()			     \
+		      - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
+
+/* Magic for libthread_db to know how to do THREAD_SELF.  */
+# define DB_THREAD_SELF \
+  REGISTER (32, 32, 23 * 4, -TLS_PRE_TCB_SIZE - TLS_TCB_OFFSET)
+
+/* Access to data in the thread descriptor is easy.  */
+# define THREAD_GETMEM(descr, member) \
+  descr->member
+# define THREAD_GETMEM_NC(descr, member, idx) \
+  descr->member[idx]
+# define THREAD_SETMEM(descr, member, value) \
+  descr->member = (value)
+# define THREAD_SETMEM_NC(descr, member, idx, value) \
+  descr->member[idx] = (value)
+
+# define THREAD_GET_POINTER_GUARD()				\
+  (((tcbhead_t *) (READ_THREAD_POINTER ()			\
+		   - TLS_TCB_OFFSET))[-1].pointer_guard)
+# define THREAD_SET_POINTER_GUARD(value)	\
+  (THREAD_GET_POINTER_GUARD () = (value))
+# define THREAD_COPY_POINTER_GUARD(descr)				\
+  (((tcbhead_t *) ((void *) (descr)					\
+		   + TLS_PRE_TCB_SIZE))[-1].pointer_guard		\
+   = THREAD_GET_POINTER_GUARD())
+
+/* l_tls_offset == 0 is perfectly valid on Nios II, so we have to use some
+   different value to mean unset l_tls_offset.  */
+# define NO_TLS_OFFSET		-1
+
+/* Get and set the global scope generation counter in struct pthread.  */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED   1
+#define THREAD_GSCOPE_FLAG_WAIT   2
+#define THREAD_GSCOPE_RESET_FLAG() \
+  do									     \
+    { int __res								     \
+	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,	     \
+			       THREAD_GSCOPE_FLAG_UNUSED);		     \
+      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
+	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE);   \
+    }									     \
+  while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+  do									     \
+    {									     \
+      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;	     \
+      atomic_write_barrier ();						     \
+    }									     \
+  while (0)
+#define THREAD_GSCOPE_WAIT() \
+  GL(dl_wait_lookup_done) ()
+
+#endif /* __ASSEMBLER__ */
+
+#endif	/* tls.h */
diff --git a/sysdeps/nios2/preconfigure b/sysdeps/nios2/preconfigure
new file mode 100644
index 0000000..4b5bd49
--- /dev/null
+++ b/sysdeps/nios2/preconfigure
@@ -0,0 +1,6 @@ 
+case "$machine" in
+nios2*)
+	base_machine=nios2
+	machine=nios2
+	;;
+esac
diff --git a/sysdeps/nios2/s_fma.c b/sysdeps/nios2/s_fma.c
new file mode 100644
index 0000000..d9613fa
--- /dev/null
+++ b/sysdeps/nios2/s_fma.c
@@ -0,0 +1 @@ 
+#include <soft-fp/fmadf4.c>
diff --git a/sysdeps/nios2/s_fmaf.c b/sysdeps/nios2/s_fmaf.c
new file mode 100644
index 0000000..aa5c9b2
--- /dev/null
+++ b/sysdeps/nios2/s_fmaf.c
@@ -0,0 +1 @@ 
+#include <soft-fp/fmasf4.c>
diff --git a/sysdeps/nios2/setjmp.S b/sysdeps/nios2/setjmp.S
new file mode 100644
index 0000000..38e3d44
--- /dev/null
+++ b/sysdeps/nios2/setjmp.S
@@ -0,0 +1,74 @@ 
+/* Copyright (C) 1991-2014 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 <jmpbuf-offsets.h>
+
+	.text
+ENTRY(setjmp)
+	movi	r5, 1
+	br	__sigsetjmp
+END(setjmp)
+
+ENTRY(_setjmp)
+	mov	r5, zero
+	br	__sigsetjmp
+END(_setjmp)
+libc_hidden_def (_setjmp)
+
+/* Save the current program position in ENV and return 0.  */
+ENTRY(__sigsetjmp)
+#ifdef	PTR_MANGLE
+	PTR_MANGLE_GUARD (r9)
+#endif
+	stw	r16, (JB_R16*4)(r4)
+	stw	r17, (JB_R17*4)(r4)
+	stw	r18, (JB_R18*4)(r4)
+	stw	r19, (JB_R19*4)(r4)
+	stw	r20, (JB_R20*4)(r4)
+	stw	r21, (JB_R21*4)(r4)
+	stw	r22, (JB_R22*4)(r4)
+#ifdef	PTR_MANGLE
+	PTR_MANGLE (r6, ra, r9)
+	PTR_MANGLE (r7, fp, r9)
+	PTR_MANGLE (r8, sp, r9)
+	stw	r6,  (JB_RA*4)(r4)
+	stw	r7,  (JB_FP*4)(r4)
+	stw	r8,  (JB_SP*4)(r4)
+#else
+	stw	ra,  (JB_RA*4)(r4)
+	stw	fp,  (JB_FP*4)(r4)
+	stw	sp,  (JB_SP*4)(r4)
+#endif
+#if defined NOT_IN_libc && defined IS_IN_rtld
+	/* In ld.so we never save the signal mask.  */
+	mov r2, zero
+	ret
+#else
+	/* Save the signal mask if requested.  */
+#if defined(__PIC__) || defined(PIC)
+        nextpc r2
+1:	movhi r3, %hiadj(__sigjmp_save - 1b)
+	addi r3, r3, %lo(__sigjmp_save - 1b)
+	add r2, r2, r3
+	jmp r2
+#else
+	jmpi __sigjmp_save
+#endif
+#endif
+END (__sigsetjmp)
+libc_hidden_def (__sigsetjmp)
diff --git a/sysdeps/nios2/shlib-versions b/sysdeps/nios2/shlib-versions
new file mode 100644
index 0000000..2e40c18
--- /dev/null
+++ b/sysdeps/nios2/shlib-versions
@@ -0,0 +1,2 @@ 
+nios2-.*-linux.*         DEFAULT                 GLIBC_2.20
+nios2-.*-linux.*         ld=ld-linux-nios2.so.1
diff --git a/sysdeps/nios2/soft-fp/sfp-machine.h b/sysdeps/nios2/soft-fp/sfp-machine.h
new file mode 100644
index 0000000..95eefc1
--- /dev/null
+++ b/sysdeps/nios2/soft-fp/sfp-machine.h
@@ -0,0 +1,51 @@ 
+#define _FP_W_TYPE_SIZE		32
+#define _FP_W_TYPE		unsigned long
+#define _FP_WS_TYPE		signed long
+#define _FP_I_TYPE		long
+
+#define _FP_MUL_MEAT_S(R,X,Y)				\
+  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_D(R,X,Y)				\
+  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_Q(R,X,Y)				\
+  _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_MUL_MEAT_DW_S(R,X,Y)				\
+  _FP_MUL_MEAT_DW_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_DW_D(R,X,Y)				\
+  _FP_MUL_MEAT_DW_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_DW_Q(R,X,Y)				\
+  _FP_MUL_MEAT_DW_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_loop(S,R,X,Y)
+#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_2_udiv(D,R,X,Y)
+#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_4_udiv(Q,R,X,Y)
+
+#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
+#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1
+#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
+#define _FP_NANSIGN_S		0
+#define _FP_NANSIGN_D		0
+#define _FP_NANSIGN_Q		0
+
+#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
+
+/* This is arbitrarily taken from the PowerPC version.  */
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
+  do {								\
+    if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)		\
+	&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))	\
+      {								\
+	R##_s = Y##_s;						\
+	_FP_FRAC_COPY_##wc(R,Y);				\
+      }								\
+    else							\
+      {								\
+	R##_s = X##_s;						\
+	_FP_FRAC_COPY_##wc(R,X);				\
+      }								\
+    R##_c = FP_CLS_NAN;						\
+  } while (0)
+
+#define _FP_TININESS_AFTER_ROUNDING 0
diff --git a/sysdeps/nios2/sotruss-lib.c b/sysdeps/nios2/sotruss-lib.c
new file mode 100644
index 0000000..7154417
--- /dev/null
+++ b/sysdeps/nios2/sotruss-lib.c
@@ -0,0 +1,51 @@ 
+/* Override generic sotruss-lib.c to define actual functions for Nios II.
+   Copyright (C) 2014 Free Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define HAVE_ARCH_PLTENTER
+#define HAVE_ARCH_PLTEXIT
+
+#include <elf/sotruss-lib.c>
+
+ElfW(Addr)
+la_nios2_gnu_pltenter (ElfW(Sym) *sym __attribute__ ((unused)),
+		       unsigned int ndx __attribute__ ((unused)),
+		       uintptr_t *refcook, uintptr_t *defcook,
+		       La_nios2_regs *regs, unsigned int *flags,
+		       const char *symname, long int *framesizep)
+{
+  print_enter (refcook, defcook, symname,
+	       regs->lr_reg[0], regs->lr_reg[1], regs->lr_reg[2],
+	       *flags);
+
+  /* No need to copy anything, we will not need the parameters in any case.  */
+  *framesizep = 0;
+
+  return sym->st_value;
+}
+
+unsigned int
+la_nios2_gnu_pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
+		      uintptr_t *defcook,
+		      const struct La_nios2_regs *inregs,
+		      struct La_nios2_retval *outregs, const char *symname)
+{
+  print_exit (refcook, defcook, symname, outregs->lrv_r2);
+
+  return 0;
+}
diff --git a/sysdeps/nios2/stackguard-macros.h b/sysdeps/nios2/stackguard-macros.h
new file mode 100644
index 0000000..55a5771
--- /dev/null
+++ b/sysdeps/nios2/stackguard-macros.h
@@ -0,0 +1,6 @@ 
+#include <stdint.h>
+
+extern uintptr_t __stack_chk_guard;
+#define STACK_CHK_GUARD __stack_chk_guard
+
+#define POINTER_CHK_GUARD THREAD_GET_POINTER_GUARD()
diff --git a/sysdeps/nios2/stackinfo.h b/sysdeps/nios2/stackinfo.h
new file mode 100644
index 0000000..fd2e328
--- /dev/null
+++ b/sysdeps/nios2/stackinfo.h
@@ -0,0 +1,33 @@ 
+/* Copyright (C) 2012-2014 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 file contains a bit of information about the stack allocation
+   of the processor.  */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H	1
+
+#include <elf.h>
+
+/* On Nios II the stack grows down.  */
+#define _STACK_GROWS_DOWN	1
+
+/* Default to an executable stack.  PF_X can be overridden if PT_GNU_STACK is
+ * present, but it is presumed absent.  */
+#define DEFAULT_STACK_PERMS (PF_R|PF_W|PF_X)
+
+#endif	/* stackinfo.h */
diff --git a/sysdeps/nios2/start.S b/sysdeps/nios2/start.S
new file mode 100644
index 0000000..9a662b1
--- /dev/null
+++ b/sysdeps/nios2/start.S
@@ -0,0 +1,146 @@ 
+/* Startup code for Nios II
+   Copyright (C) 1995-2014 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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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 is the canonical entry point, usually the first thing in the text
+   segment.
+
+	Note that the code in the .init section has already been run.
+	This includes _init and _libc_init
+
+	The stack pointer, sp, will point to the argument count on the stack.
+	The initial state of the stack when a userspace process is started is:
+
+	    Purpose			Start Address	Length
+	    Unspecified			High Addresses
+	    Referenced strings, etc.			Varies
+	    Unspecified
+	    Null auxilliary vector entry		4bytes
+	    Auxilliary vector entries			8bytes each
+	    NULL terminator for envp			4bytes
+	    Environment pointers	sp+8+4*argc	4bytes each
+	    NULL terminator for argv	sp+4+4*argc	4bytes
+	    Argument pointers		sp+4		4bytes each
+	    Argument count		sp		4bytes
+	    Unspecified			Low Addresses
+
+	If the application should register a destructor function with atexit,
+	the pointer will be placed in r4. Otherwise r4 will be zero.
+
+	The contents of all other registers are unspecified. User code should
+	set fp to zero to mark the end of the frame chain.
+
+	The auxilliary vector is a series of pairs of 32-bit tag and 32-bit
+	value, terminated by an AT_NULL tag.
+*/
+
+	.text
+	.globl _start
+	.type _start,%function
+_start:
+	/* Set up the global pointer.  */
+	movhi	gp, %hiadj(_gp)
+	addi	gp, gp, %lo(_gp)
+
+	/* Save the stack pointer.  */
+	mov	r2, sp
+
+	/* Create room on the stack for the fini, rtld_fini and stack_end args
+	   to __libc_start_main. */
+	subi	sp, sp, 12
+
+	/* Push stack_end */
+	stw	r2, 8(sp)
+
+	/* Push rtld_fini */
+	stw	r4, 4(sp)
+
+	/* Set up the GOT pointer.  */
+	nextpc	r22
+1:	movhi	r2, %hiadj(_gp_got - 1b)
+	addi	r2, r2, %lo(_gp_got - 1b)
+	add	r22, r22, r2
+
+	/* Push fini */
+	movhi	r8, %call_hiadj(__libc_csu_fini)
+	addi	r8, r8, %call_lo(__libc_csu_fini)
+	add	r8, r8, r22
+	ldw	r8, 0(r8)
+	stw	r8, 0(sp)
+
+	/* r7 == init */
+	movhi	r7, %call_hiadj(__libc_csu_init)
+	addi	r7, r7, %call_lo(__libc_csu_init)
+	add	r7, r7, r22
+	ldw	r7, 0(r7)
+
+	/* r6 == argv */
+	addi	r6, sp, 16
+
+	/* r5 == argc */
+	ldw	r5, 12(sp)
+
+	/* r4 == main */
+	movhi	r4, %call_hiadj(main)
+	addi	r4, r4, %call_lo(main)
+	add	r4, r4, r22
+	ldw	r4, 0(r4)
+
+	/* fp == 0 */
+	mov	fp, zero
+
+	/* __libc_start_main (main, argc, argv, init, fini, rtld_fini,
+			      stack_end) */
+
+	/* Let the libc call main and exit with its return code.  */
+	movhi	r2, %call_hiadj(__libc_start_main)
+	addi	r2, r2, %call_lo(__libc_start_main)
+	add	r2, r2, r22
+	ldw	r2, 0(r2)
+	callr	r2
+
+	/* should never get here....*/
+	movhi	r2, %call_hiadj(abort)
+	addi	r2, r2, %call_lo(abort)
+	add	r2, r2, r22
+	ldw	r2, 0(r2)
+	callr	r2
+
+/* Define a symbol for the first piece of initialized data.  */
+	.data
+	.globl __data_start
+__data_start:
+	.long 0
+	.weak data_start
+	data_start = __data_start
diff --git a/sysdeps/nios2/sysdep.h b/sysdeps/nios2/sysdep.h
new file mode 100644
index 0000000..2e907db
--- /dev/null
+++ b/sysdeps/nios2/sysdep.h
@@ -0,0 +1,65 @@ 
+/* Copyright (C) 2014 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 <sysdeps/generic/sysdep.h>
+
+#ifdef	__ASSEMBLER__
+
+/* Syntactic details of assembler.  */
+
+#define ASM_SIZE_DIRECTIVE(name) .size name,.-name
+
+#define ENTRY(name)						 \
+  .globl C_SYMBOL_NAME(name);					 \
+  .type C_SYMBOL_NAME(name),%function;				 \
+  C_LABEL(name)							 \
+  cfi_startproc;						 \
+  CALL_MCOUNT;
+
+#undef  END
+#define END(name)				\
+  cfi_endproc;					\
+  ASM_SIZE_DIRECTIVE(name)
+
+#ifdef PROF
+
+# ifdef __PIC__
+#  define CALL_MCOUNT				\
+  mov r8, ra;					\
+  nextpc r2;					\
+1:						\
+  movhi r3, %hiadj(_gp_got - 1b);		\
+  addi r3, r3, %lo(_gp_got - 1b);		\
+  add r2, r2, r3;				\
+  ldw r2, %call(_mcount)(r2);			\
+  callr r2;					\
+  mov ra, r8;					\
+  ret;
+# else
+#  define CALL_MCOUNT				\
+  mov r8, ra;					\
+  call _mount;					\
+  mov ra, r8;					\
+  ret;
+# endif
+
+#else
+# define CALL_MCOUNT		/* Do nothing.  */
+#endif
+
+#endif	/* __ASSEMBLER__ */
diff --git a/sysdeps/nios2/tls-macros.h b/sysdeps/nios2/tls-macros.h
new file mode 100644
index 0000000..7029530
--- /dev/null
+++ b/sysdeps/nios2/tls-macros.h
@@ -0,0 +1,46 @@ 
+#define TLS_LE(x)					\
+  ({ int *__result;					\
+     asm ("addi %0, r23, %%tls_le(" #x ")"		\
+	  : "=r" (__result));		                \
+     __result; })
+
+#define TLS_IE(x)					\
+  ({ int *__result;					\
+     int __tmp;                                         \
+     asm ("nextpc %0 ; "                                \
+          "1: movhi %1, %%hiadj(_gp_got - 1b) ; "	\
+          "addi %1, %1, %%lo(_gp_got - 1b) ; "		\
+          "add %0, %0, %1 ; "                           \
+          "ldw %1, %%tls_ie(" #x ")(%0) ; "        	\
+	  "add %1, r23, %1"              		\
+          : "=&r" (__tmp), "=&r" (__result));           \
+     __result; })
+
+#define TLS_LD(x)					\
+  ({ char *__result;					\
+     char *__result2;                                   \
+     int *__result3;                                    \
+     int __tmp;                                         \
+     extern void *__tls_get_addr (void *);		\
+     asm ("nextpc %0 ; "                                \
+          "1: movhi %1, %%hiadj(_gp_got - 1b) ; "	\
+          "addi %1, %1, %%lo(_gp_got - 1b) ; "		\
+          "add %0, %0, %1 ; "                           \
+          "addi %0, %0, %%tls_ldm(" #x ")"              \
+          : "=r" (__result), "=r" (__tmp));             \
+     __result2 = (char *)__tls_get_addr (__result);	\
+     asm ("addi %0, %1, %%tls_ldo(" #x ")"              \
+	  : "=r" (__result3) : "r" (__result2));        \
+     __result3; })
+
+#define TLS_GD(x)					\
+  ({ int *__result;					\
+     int __tmp;                                         \
+     extern void *__tls_get_addr (void *);		\
+     asm ("nextpc %0 ; "                                \
+          "1: movhi %1, %%hiadj(_gp_got - 1b) ; "	\
+          "addi %1, %1, %%lo(_gp_got - 1b) ; "		\
+          "add %0, %0, %1 ; "                           \
+          "addi %0, %0, %%tls_gd(" #x ")"		\
+	  : "=r" (__result), "=r" (__tmp));		\
+     (int *)__tls_get_addr (__result); })
diff --git a/sysdeps/nios2/tst-audit.h b/sysdeps/nios2/tst-audit.h
new file mode 100644
index 0000000..ef79a21
--- /dev/null
+++ b/sysdeps/nios2/tst-audit.h
@@ -0,0 +1,23 @@ 
+/* Definitions for testing PLT entry/exit auditing.  Nios II version.
+   Copyright (C) 2009-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define pltenter la_nios2_gnu_pltenter
+#define pltexit la_nios2_gnu_pltexit
+#define La_regs La_nios2_regs
+#define La_retval La_nios2_retval
+#define int_retval lrv_r2