or1k: add NPTL/TLS support

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>

23 files changed, 1378 insertions, 8 deletions

diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
index 80100a7f8..53dff1c82 100644
--- a/extra/Configs/Config.in
+++ b/extra/Configs/Config.in
@@ -530,7 +530,6 @@ config UCLIBC_HAS_THREADS_NATIVE
 		   !TARGET_hppa && \
 		   !TARGET_ia64 && \
 		   !TARGET_m68k && \
-		   !TARGET_or1k && \
 		   ARCH_USE_MMU
 	help
 	  If you want to compile uClibc with NPTL support, then answer Y.
diff --git a/include/elf.h b/include/elf.h
index 5312be97c..c8488bb3d 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -3507,6 +3507,19 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_OR1K_GLOB_DAT		19
 #define R_OR1K_JMP_SLOT		20
 #define R_OR1K_RELATIVE		21
+#define R_OR1K_TLS_GD_HI16	22
+#define R_OR1K_TLS_GD_LO16	23
+#define R_OR1K_TLS_LDM_HI16	24
+#define R_OR1K_TLS_LDM_LO16	25
+#define R_OR1K_TLS_LDO_HI16	26
+#define R_OR1K_TLS_LDO_LO16	27
+#define R_OR1K_TLS_IE_HI16	28
+#define R_OR1K_TLS_IE_LO16	29
+#define R_OR1K_TLS_LE_HI16	30
+#define R_OR1K_TLS_LE_LO16	31
+#define R_OR1K_TLS_TPOFF	32
+#define R_OR1K_TLS_DTPOFF	33
+#define R_OR1K_TLS_DTPMOD	34
 
 /* ARCompact specific relocs */
 #define R_ARC_NONE		0x0
diff --git a/ldso/ldso/or1k/elfinterp.c b/ldso/ldso/or1k/elfinterp.c
index 41db368b3..08668172c 100644
--- a/ldso/ldso/or1k/elfinterp.c
+++ b/ldso/ldso/or1k/elfinterp.c
@@ -212,7 +212,6 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
 	switch (reloc_type) {
 		case R_OR1K_NONE:
 			break;
-
 		case R_OR1K_8:
 		case R_OR1K_16:
 		case R_OR1K_32:
@@ -220,23 +219,19 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
 			((struct unaligned *)reloc_addr)->x = symbol_addr +
 				rpnt->r_addend;
 			break;
-
 		case R_OR1K_8_PCREL:
 		case R_OR1K_16_PCREL:
 		case R_OR1K_32_PCREL:
 		case R_OR1K_INSN_REL_26:
 			*reloc_addr = symbol_addr + rpnt->r_addend;
 			break;
-
 		case R_OR1K_GLOB_DAT:
 		case R_OR1K_JMP_SLOT:
 			*reloc_addr = symbol_addr + rpnt->r_addend;
 			break;
-/* Handled by elf_machine_relative */
 		case R_OR1K_RELATIVE:
 			*reloc_addr = (unsigned long)tpnt->loadaddr + rpnt->r_addend;
 			break;
-
 		case R_OR1K_COPY:
 			if (symbol_addr) {
 #if defined (__SUPPORT_LD_DEBUG__)
@@ -256,6 +251,18 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
 				_dl_dprintf(_dl_debug_file, "no symbol_addr to copy !?\n");
 #endif
 			break;
+#if defined USE_TLS && USE_TLS
+		case R_OR1K_TLS_DTPMOD:
+			*reloc_addr = tls_tpnt->l_tls_modid;
+			break;
+		case R_OR1K_TLS_DTPOFF:
+			*reloc_addr = symbol_addr;
+			break;
+		case R_OR1K_TLS_TPOFF:
+			CHECK_STATIC_TLS ((struct link_map *) tls_tpnt);
+			*reloc_addr = tls_tpnt->l_tls_offset + symbol_addr + rpnt->r_addend;
+			break;
+#endif
 
 		default:
 			return -1;	/* Calls _dl_exit(1). */
diff --git a/libc/sysdeps/linux/or1k/bits/setjmp.h b/libc/sysdeps/linux/or1k/bits/setjmp.h
index dd2ae5759..4bcdc6a67 100644
--- a/libc/sysdeps/linux/or1k/bits/setjmp.h
+++ b/libc/sysdeps/linux/or1k/bits/setjmp.h
@@ -20,7 +20,7 @@
 #ifndef _BITS_SETJMP_H
 #define _BITS_SETJMP_H  1
 
-#ifndef _SETJMP_H
+#if !defined _SETJMP_H && !defined _PTHREAD_H
 # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
 #endif
 
diff --git a/libc/sysdeps/linux/or1k/jmpbuf-unwind.h b/libc/sysdeps/linux/or1k/jmpbuf-unwind.h
index 436073b60..311110d48 100644
--- a/libc/sysdeps/linux/or1k/jmpbuf-unwind.h
+++ b/libc/sysdeps/linux/or1k/jmpbuf-unwind.h
@@ -21,4 +21,15 @@
 /* Test if longjmp to JMPBUF would unwind the frame
    containing a local variable at ADDRESS.  */
 #define _JMPBUF_UNWINDS(jmpbuf, address) \
-	((void *) (address) < (void *) (jmpbuf)[JB_SP])
+  ((void *) (address) < (void *) (jmpbuf[JB_SP]))
+
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+#include <stdint.h>
+#include <unwind.h>
+
+#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)[JB_SP] - (_adj))
+#endif
diff --git a/libpthread/nptl/sysdeps/or1k/Makefile.arch b/libpthread/nptl/sysdeps/or1k/Makefile.arch
new file mode 100644
index 000000000..5be08a44c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/Makefile.arch
@@ -0,0 +1,4 @@
+# Makefile for uClibc-ng NPTL
+# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+
+libc_arch_a_SSRC = libc-tls.S
diff --git a/libpthread/nptl/sysdeps/or1k/dl-tls.h b/libpthread/nptl/sysdeps/or1k/dl-tls.h
new file mode 100644
index 000000000..5613e21e2
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/dl-tls.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 2005-2016 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;
+
+extern void *__tls_get_addr (tls_index *ti);
diff --git a/libpthread/nptl/sysdeps/or1k/libc-tls.c b/libpthread/nptl/sysdeps/or1k/libc-tls.c
new file mode 100644
index 000000000..7f440fb06
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/libc-tls.c
@@ -0,0 +1,36 @@
+/* Copyright (C) 2005-2016 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/libc-tls.c>
+#include <dl-tls.h>
+
+/* On Microblaze, 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.  */
+
+#if defined(USE_TLS) && USE_TLS
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+  dtv_t *dtv = THREAD_DTV ();
+  return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
+
+#endif
diff --git a/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c b/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c
new file mode 100644
index 000000000..cec3acbc6
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c
@@ -0,0 +1,65 @@
+/* pthread_spin_lock -- lock a spin lock.  Generic version.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+
+   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"
+
+/* A machine-specific version can define SPIN_LOCK_READS_BETWEEN_CMPXCHG
+  to the number of plain reads that it's optimal to spin on between uses
+  of atomic_compare_and_exchange_val_acq.  If spinning forever is optimal
+  then use -1.  If no plain reads here would ever be optimal, use 0.  */
+#define SPIN_LOCK_READS_BETWEEN_CMPXCHG 1000
+
+int
+pthread_spin_lock (pthread_spinlock_t *lock)
+{
+  /* atomic_exchange usually takes less instructions than
+     atomic_compare_and_exchange.  On the other hand,
+     atomic_compare_and_exchange potentially generates less bus traffic
+     when the lock is locked.
+     We assume that the first try mostly will be successful, and we use
+     atomic_exchange.  For the subsequent tries we use
+     atomic_compare_and_exchange.  */
+  if (atomic_exchange_acq (lock, 1) == 0)
+    return 0;
+
+  do
+    {
+      /* The lock is contended and we need to wait.  Going straight back
+	 to cmpxchg is not a good idea on many targets as that will force
+	 expensive memory synchronizations among processors and penalize other
+	 running threads.
+	 On the other hand, we do want to update memory state on the local core
+	 once in a while to avoid spinning indefinitely until some event that
+	 will happen to update local memory as a side-effect.  */
+      if (SPIN_LOCK_READS_BETWEEN_CMPXCHG >= 0)
+	{
+	  int wait = SPIN_LOCK_READS_BETWEEN_CMPXCHG;
+
+	  while (*lock != 0 && wait > 0)
+	    --wait;
+	}
+      else
+	{
+	  while (*lock != 0)
+	    ;
+	}
+    }
+  while (atomic_compare_and_exchange_val_acq (lock, 1, 0) != 0);
+
+  return 0;
+}
diff --git a/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c
new file mode 100644
index 000000000..4e9aa64d3
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c
@@ -0,0 +1,26 @@
+/* pthread_spin_trylock -- trylock a spin lock.  Generic version.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
+
+   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_exchange_acq (lock, 1) ? EBUSY : 0;
+}
diff --git a/libpthread/nptl/sysdeps/or1k/pthreaddef.h b/libpthread/nptl/sysdeps/or1k/pthreaddef.h
new file mode 100644
index 000000000..e8da3d965
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/pthreaddef.h
@@ -0,0 +1,38 @@
+/* Copyright (C) 2002-2012 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 16
+
+/* Minimal stack size after allocating thread descriptor and guard size.  */
+#define MINIMAL_REST_STACK 2048
+
+/* Alignment requirement for TCB.  */
+#define TCB_ALIGNMENT 16
+
+/* 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/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym b/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym
new file mode 100644
index 000000000..86025a402
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym
@@ -0,0 +1,6 @@
+#include <sysdep.h>
+#include <tls.h>
+
+MULTIPLE_THREADS_OFFSET         offsetof (struct pthread, header.multiple_threads)
+TID_OFFSET                      offsetof (struct pthread, tid)
+TP_TO_PTHREAD_OFFSET            -(sizeof (struct pthread) + sizeof (tcbhead_t))
diff --git a/libpthread/nptl/sysdeps/or1k/tls.h b/libpthread/nptl/sysdeps/or1k/tls.h
new file mode 100644
index 000000000..25bdb5e5a
--- /dev/null
+++ b/libpthread/nptl/sysdeps/or1k/tls.h
@@ -0,0 +1,201 @@
+/* Definition for thread-local data handling.  NPTL/OR1K version.
+   Copyright (C) 2005, 2007, 2011 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
+
+#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;
+
+typedef struct
+{
+  dtv_t *dtv;
+} tcbhead_t;
+
+register tcbhead_t *__thread_self __asm__("r10");
+
+# define TLS_MULTIPLE_THREADS_IN_TCB 1
+
+#else /* __ASSEMBLER__ */
+# include <tcb-offsets.h>
+#endif /* __ASSEMBLER__ */
+
+/* We require TLS support in the tools.  */
+#define HAVE_TLS_SUPPORT                1
+#define HAVE_TLS_MODEL_ATTRIBUTE        1
+#define HAVE___THREAD                   1
+
+/* Signal that TLS support is available.  */
+#define USE_TLS	1
+
+#ifndef __ASSEMBLER__
+
+/* Get system call information.  */
+# include <sysdep.h>
+
+/* The TP points to the start of the TLS block.
+ * As I understand it, this isn't strictly that "TP points to DTV" - it's
+ * more where to place the TCB in the TLS block. This will place it in 
+ * the beginning.
+ *
+ * Layout:
+ *  ------------------------------------
+ *  | PRE | TCB | TLS MEMORY ..        |
+ *  ------------------------------------
+ *              ^ r10 / TP
+ *
+ * PRE is the struct pthread described below
+ * TCB is tcbhead_t
+ * TLS memory is where the TLS program sections are loaded
+ *
+ * See _dl_allocate_tls_storage and __libc_setup_tls for more information.
+ */
+# define TLS_DTV_AT_TP  1
+
+/* Get the thread descriptor definition.  */
+# include <../../descr.h>
+
+/* Requirements for the TCB.  */
+# define TLS_INIT_TCB_SIZE    sizeof (tcbhead_t)
+# define TLS_INIT_TCB_ALIGN   __alignof__ (tcbhead_t)
+
+# define TLS_TCB_SIZE         sizeof (tcbhead_t)
+# define TLS_TCB_ALIGN        __alignof__ (tcbhead_t)
+
+/* This is the size of the TCB.  */
+
+/* This is the size we need before TCB.
+ * To support THREAD_GETMEM with friends we want to have a
+ * struct pthread available.
+ * Yank it in infront of everything, I'm sure nobody will mind.
+ *
+ * This memory is really allocated PRE the TLS block, so it's possible
+ * to do ((char*)tlsblock) - TLS_PRE_TCB_SIZE to access it.
+ * This is done for THREAD_SELF. */
+# define TLS_PRE_TCB_SIZE sizeof (struct pthread)
+
+
+/* Install the dtv pointer.
+ * When called, dtvp is a pointer not the DTV per say (which should start
+ * with the generation counter) but to the length of the DTV.
+ * We can always index with -1, so we store dtvp[1]
+ */
+# define INSTALL_DTV(tcbp, dtvp) \
+  (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1)
+
+/* Install new dtv for current thread
+ * In a logicial world dtv here would also point to the length of the DTV.
+ * However it does not, this time it points to the generation counter,
+ * so just store it.
+ *
+ * Note: -1 is still valid and contains the length. */
+# define INSTALL_NEW_DTV(dtv) \
+  (THREAD_DTV() = (dtv))
+
+/* Return dtv of given thread descriptor.  */
+# define GET_DTV(tcbp) \
+  (((tcbhead_t *) (tcbp))->dtv)
+
+/* Code to initially initialize the thread pointer.
+ *
+ * Set TP to the address _after_ tcbhead_t. This will allow us
+ * to change the size of tcbhead_t without having to re-link everything.
+ *
+ * secondcall has something to do with USE__THREAD,
+ * seems to always be 0 so we don't care about it.
+ *
+ * This has to return NULL on success (or a string with the failure text).
+ * It's hard to fail this, so return NULL always.
+ */
+# define TLS_INIT_TP(tcbp, secondcall) \
+  ({__thread_self = ((tcbhead_t *)tcbp + 1); NULL;})
+
+/* Return the address of the dtv for the current thread.
+ *
+ * Dereference TP, offset to dtv - really straightforward.
+ * Remember that we made TP point to after tcb, so we need to reverse that.
+ */
+#  define THREAD_DTV() \
+  ((((tcbhead_t *)__thread_self)-1)->dtv)
+
+/* Return the thread descriptor for the current thread. 
+ *
+ * Return a pointer to the TLS_PRE area where we allocated space for
+ * a struct pthread. Again, TP points to after tcbhead_t, compensate with
+ * TLS_INIT_TCB_SIZE.
+ *
+ * I regard this is a seperate system from the "normal" TLS.
+ */
+# define THREAD_SELF \
+  ((struct pthread *) ((char *) __thread_self - TLS_INIT_TCB_SIZE \
+    - TLS_PRE_TCB_SIZE))
+
+/* Magic for libthread_db to know how to do THREAD_SELF.  */
+# define DB_THREAD_SELF \
+  CONST_THREAD_AREA (32, sizeof (struct pthread))
+
+/* 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)
+
+/* 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/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile
new file mode 100644
index 000000000..2caba11b7
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile
@@ -0,0 +1,9 @@
+# Makefile for uClibc-ng NPTL
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+
+top_srcdir=../../../../../../../
+top_builddir=../../../../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch
new file mode 100644
index 000000000..94aa25ffb
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch
@@ -0,0 +1,9 @@
+# Makefile for uClibc-ng NPTL
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+
+libpthread_linux_arch_SSRC =
+libpthread_linux_arch_CSRC = pthread_once.c
+
+libc_linux_arch_CSRC = fork.c
+
+CFLAGS += $(SSP_ALL_CFLAGS)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h
new file mode 100644
index 000000000..43440dc3c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h
@@ -0,0 +1,128 @@
+/* Copyright (C) 2010-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_ATOMIC_H
+#define _BITS_ATOMIC_H	1
+
+#include <stdint.h>
+
+/* This is needed to break a depencency loop, we do not need errno anyway */
+#ifndef _ERRNO_H
+# define _ERRNO_H
+# include <sysdep.h>
+# undef _ERRNO_H
+#else
+# include <sysdep.h>
+#endif
+
+/* Or1k has no atomic compare-and-exchange operation, but the
+   kernel provides userspace atomicity operations.  Use them.  */
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+/* TODO: Move these to a kernel header */
+#define OR1K_ATOMIC_SWAP	1
+#define OR1K_ATOMIC_CMPXCHG	2
+#define OR1K_ATOMIC_XCHG	3
+#define OR1K_ATOMIC_ADD		4
+#define OR1K_ATOMIC_DECPOS	5
+#define OR1K_ATOMIC_AND		6
+#define OR1K_ATOMIC_OR		7
+#define OR1K_ATOMIC_UMAX	8
+#define OR1K_ATOMIC_UMIN	9
+
+#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 4, \
+	    OR1K_ATOMIC_CMPXCHG, mem, oldval, newval) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_exchange_acq(mem, newval) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_XCHG, mem, newval) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_exchange_and_add_acq(mem, val) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_ADD, mem, val) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_decrement_if_positive(mem) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 2, \
+	    OR1K_ATOMIC_DECPOS, mem) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_and_val(mem, mask) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_AND, mem, mask) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_or_val(mem, mask) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_OR, mem, mask) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_max_val(mem, val) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_UMAX, mem, val) \
+	 : __atomic_error_bad_argument_size ()))
+
+#define atomic_min_val(mem, val) \
+  ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \
+	 INTERNAL_SYSCALL (or1k_atomic, , 3, \
+	    OR1K_ATOMIC_UMIN, mem, val) \
+	 : __atomic_error_bad_argument_size ()))
+
+
+/* atomic_bit_test_set in terms of atomic_or_val. */
+#define atomic_bit_test_set(mem, bit)                                    \
+    ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \
+         atomic_or_val ((mem), __att0_mask) & __att0_mask; })
+
+/* Various macros that should just be synonyms. */
+#define catomic_exchange_and_add atomic_exchange_and_add
+#define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask)))
+#define catomic_and atomic_and
+#define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask)))
+#define catomic_or atomic_or
+#define atomic_max(mem, val) ((void)atomic_max_val ((mem), (val)))
+#define catomic_max atomic_max
+#define atomic_min(mem, val) ((void)atomic_min_val ((mem), (val)))
+#define catomic_min atomic_min
+/*
+ * This non-existent symbol is called for unsupporrted sizes,
+ * indicating a bug in the caller.
+ */
+extern int __atomic_error_bad_argument_size(void)
+    __attribute__ ((error ("bad sizeof atomic argument")));
+
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h
new file mode 100644
index 000000000..695a61fdd
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h
@@ -0,0 +1,177 @@
+/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H	1
+
+#define __SIZEOF_PTHREAD_ATTR_T 36
+#define __SIZEOF_PTHREAD_MUTEX_T 24
+#define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+#define __SIZEOF_PTHREAD_COND_T 48
+#define __SIZEOF_PTHREAD_COND_COMPAT_T 12
+#define __SIZEOF_PTHREAD_CONDATTR_T 4
+#define __SIZEOF_PTHREAD_RWLOCK_T 32
+#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+#define __SIZEOF_PTHREAD_BARRIER_T 20
+#define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+
+
+/* Thread identifiers.  The structure of the attribute type is not
+   exposed on purpose.  */
+typedef unsigned long int pthread_t;
+
+union pthread_attr_t
+{
+  char __size[__SIZEOF_PTHREAD_ATTR_T];
+  long int __align;
+};
+#ifndef __have_pthread_attr_t
+typedef union pthread_attr_t pthread_attr_t;
+# define __have_pthread_attr_t  1
+#endif
+
+
+typedef struct __pthread_internal_slist
+{
+  struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+
+
+/* Data structures for mutex handling.  The structure of the attribute
+   type is not exposed on purpose.  */
+typedef union
+{
+  struct __pthread_mutex_s
+  {
+    int __lock;
+    unsigned int __count;
+    int __owner;
+    /* KIND must stay at this position in the structure to maintain
+       binary compatibility.  */
+    int __kind;
+    unsigned int __nusers;
+    __extension__ union
+    {
+      int __spins;
+      __pthread_slist_t __list;
+    };
+  } __data;
+  char __size[__SIZEOF_PTHR