Fix semaphore destruction (bug 12674).

This commit fixes semaphore destruction by either using 64b atomic
operations (where available), or by using two separate fields when only
32b atomic operations are available.  In the latter case, we keep a
conservative estimate of whether there are any waiting threads in one
bit of the field that counts the number of available tokens, thus
allowing sem_post to atomically both add a token and determine whether
it needs to call futex_wake.

See:
https://sourceware.org/ml/libc-alpha/2014-12/msg00155.html

19 files changed, 23 insertions, 1794 deletions

diff --git a/sysdeps/nptl/internaltypes.h b/sysdeps/nptl/internaltypes.h
index 2f105459ee..7c0d2402a3 100644
--- a/sysdeps/nptl/internaltypes.h
+++ b/sysdeps/nptl/internaltypes.h
@@ -20,6 +20,8 @@
 #define _INTERNALTYPES_H	1
 
 #include <stdint.h>
+#include <atomic.h>
+#include <endian.h>
 
 
 struct pthread_attr
@@ -141,9 +143,29 @@ struct pthread_key_struct
 /* Semaphore variable structure.  */
 struct new_sem
 {
+#if __HAVE_64B_ATOMICS
+  /* The data field holds both value (in the least-significant 32 bytes) and
+     nwaiters.  */
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define SEM_VALUE_OFFSET 0
+# elif __BYTE_ORDER == __BIG_ENDIAN
+#  define SEM_VALUE_OFFSET 1
+# else
+# error Unsupported byte order.
+# endif
+# define SEM_NWAITERS_SHIFT 32
+# define SEM_VALUE_MASK (~(unsigned int)0)
+  unsigned long int data;
+  int private;
+  int pad;
+#else
+# define SEM_VALUE_SHIFT 1
+# define SEM_NWAITERS_MASK ((unsigned int)1)
   unsigned int value;
   int private;
-  unsigned long int nwaiters;
+  int pad;
+  unsigned int nwaiters;
+#endif
 };
 
 struct old_sem
diff --git a/sysdeps/unix/sysv/linux/alpha/sem_post.c b/sysdeps/unix/sysv/linux/alpha/sem_post.c
deleted file mode 100644
index 9d4495312e..0000000000
--- a/sysdeps/unix/sysv/linux/alpha/sem_post.c
+++ /dev/null
@@ -1,5 +0,0 @@
-/* ??? This is an ass-backwards way to do this.  We should simply define
-   the acquire/release semantics of atomic_exchange_and_add.  And even if
-   we don't do this, we should be using atomic_full_barrier or otherwise.  */
-#define __lll_rel_instr  "mb"
-#include <nptl/sem_post.c>
diff --git a/sysdeps/unix/sysv/linux/i386/i486/sem_post.S b/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
deleted file mode 100644
index 7b553bb478..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i486/sem_post.S
+++ /dev/null
@@ -1,150 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-#include <lowlevellock.h>
-
-
-	.text
-
-	.globl	__new_sem_post
-	.type	__new_sem_post,@function
-	.align	16
-__new_sem_post:
-	cfi_startproc
-	pushl	%ebx
-	cfi_adjust_cfa_offset(4)
-	cfi_offset(%ebx, -8)
-
-	movl	8(%esp), %ebx
-
-#if VALUE == 0
-	movl	(%ebx), %eax
-#else
-	movl	VALUE(%ebx), %eax
-#endif
-0:	cmpl	$SEM_VALUE_MAX, %eax
-	je	3f
-	leal	1(%eax), %edx
-	LOCK
-#if VALUE == 0
-	cmpxchgl %edx, (%ebx)
-#else
-	cmpxchgl %edx, VALUE(%ebx)
-#endif
-	jnz	0b
-
-	cmpl	$0, NWAITERS(%ebx)
-	je	2f
-
-	movl	$FUTEX_WAKE, %ecx
-	orl	PRIVATE(%ebx), %ecx
-	movl	$1, %edx
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-
-	testl	%eax, %eax
-	js	1f
-
-2:	xorl	%eax, %eax
-	popl	%ebx
-	cfi_adjust_cfa_offset(-4)
-	cfi_restore(%ebx)
-	ret
-
-	cfi_adjust_cfa_offset(4)
-	cfi_offset(%ebx, -8)
-1:
-#ifdef PIC
-	SETUP_PIC_REG(bx)
-#else
-	movl	$4f, %ebx
-4:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ebx), %edx
-	addl	%gs:0, %edx
-	movl	$EINVAL, (%edx)
-#else
-	movl	errno@gotntpoff(%ebx), %edx
-	movl	$EINVAL, %gs:(%edx)
-#endif
-
-	orl	$-1, %eax
-	popl	%ebx
-	ret
-
-3:
-#ifdef PIC
-	SETUP_PIC_REG(bx)
-#else
-	movl	$5f, %ebx
-5:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ebx), %edx
-	addl	%gs:0, %edx
-	movl	$EOVERFLOW, (%edx)
-#else
-	movl	errno@gotntpoff(%ebx), %edx
-	movl	$EOVERFLOW, %gs:(%edx)
-#endif
-
-	orl	$-1, %eax
-	popl	%ebx
-	cfi_adjust_cfa_offset(-4)
-	cfi_restore(%ebx)
-	ret
-	cfi_endproc
-	.size	__new_sem_post,.-__new_sem_post
-	versioned_symbol(libpthread, __new_sem_post, sem_post, GLIBC_2_1)
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
-	.global	__old_sem_post
-	.type	__old_sem_post,@function
-__old_sem_post:
-	cfi_startproc
-	pushl	%ebx
-	cfi_adjust_cfa_offset(4)
-	cfi_offset(%ebx, -8)
-
-	movl	8(%esp), %ebx
-	LOCK
-	addl	$1, (%ebx)
-
-	movl	$SYS_futex, %eax
-	movl	$FUTEX_WAKE, %ecx
-	movl	$1, %edx
-	ENTER_KERNEL
-
-	testl	%eax, %eax
-	js	1b
-
-	xorl	%eax, %eax
-	popl	%ebx
-	cfi_adjust_cfa_offset(-4)
-	cfi_restore(%ebx)
-	ret
-	cfi_endproc
-	.size	__old_sem_post,.-__old_sem_post
-	compat_symbol(libpthread, __old_sem_post, sem_post, GLIBC_2_0)
-#endif
diff --git a/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S b/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
deleted file mode 100644
index a8b9164a9f..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S
+++ /dev/null
@@ -1,327 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-#include <lowlevellock.h>
-
-
-#if VALUE != 0
-# error "code needs to be rewritten for VALUE != 0"
-#endif
-
-
-	.text
-
-	.globl	sem_timedwait
-	.type	sem_timedwait,@function
-	.align	16
-sem_timedwait:
-.LSTARTCODE:
-	movl	4(%esp), %ecx
-
-	movl	(%ecx), %eax
-2:	testl	%eax, %eax
-	je	1f
-
-	leal	-1(%eax), %edx
-	LOCK
-	cmpxchgl %edx, (%ecx)
-	jne	2b
-
-	xorl	%eax, %eax
-	ret
-
-	/* Check whether the timeout value is valid.  */
-1:	pushl	%esi
-.Lpush_esi:
-	pushl	%edi
-.Lpush_edi:
-	pushl	%ebx
-.Lpush_ebx:
-	subl	$12, %esp
-.Lsub_esp:
-
-	movl	32(%esp), %edi
-
-	/* Check for invalid nanosecond field.  */
-	cmpl	$1000000000, 4(%edi)
-	movl	$EINVAL, %esi
-	jae	.Lerrno_exit
-
-	LOCK
-	incl	NWAITERS(%ecx)
-
-7:	xorl	%ecx, %ecx
-	movl	%esp, %ebx
-	movl	%ecx, %edx
-	movl	$__NR_gettimeofday, %eax
-	ENTER_KERNEL
-
-	/* Compute relative timeout.  */
-	movl	4(%esp), %eax
-	movl	$1000, %edx
-	mul	%edx		/* Milli seconds to nano seconds.  */
-	movl	(%edi), %ecx
-	movl	4(%edi), %edx
-	subl	(%esp), %ecx
-	subl	%eax, %edx
-	jns	5f
-	addl	$1000000000, %edx
-	subl	$1, %ecx
-5:	testl	%ecx, %ecx
-	movl	$ETIMEDOUT, %esi
-	js	6f		/* Time is already up.  */
-
-	movl	%ecx, (%esp)	/* Store relative timeout.  */
-	movl	%edx, 4(%esp)
-
-.LcleanupSTART:
-	call	__pthread_enable_asynccancel
-	movl	%eax, 8(%esp)
-
-	movl	28(%esp), %ebx	/* Load semaphore address.  */
-#if FUTEX_WAIT == 0
-	movl	PRIVATE(%ebx), %ecx
-#else
-	movl	$FUTEX_WAIT, %ecx
-	orl	PRIVATE(%ebx), %ecx
-#endif
-	movl	%esp, %esi
-	xorl	%edx, %edx
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-	movl	%eax, %esi
-
-	movl	8(%esp), %eax
-	call	__pthread_disable_asynccancel
-.LcleanupEND:
-
-	testl	%esi, %esi
-	je	9f
-	cmpl	$-EWOULDBLOCK, %esi
-	jne	3f
-
-9:	movl	(%ebx), %eax
-8:	testl	%eax, %eax
-	je	7b
-
-	leal	-1(%eax), %ecx
-	LOCK
-	cmpxchgl %ecx, (%ebx)
-	jne	8b
-
-	xorl	%eax, %eax
-
-	LOCK
-	decl	NWAITERS(%ebx)
-
-10:	addl	$12, %esp
-.Ladd_esp:
-	popl	%ebx
-.Lpop_ebx:
-	popl	%edi
-.Lpop_edi:
-	popl	%esi
-.Lpop_esi:
-	ret
-
-.Lafter_ret:
-3:	negl	%esi
-6:
-	movl	28(%esp), %ebx	/* Load semaphore address.  */
-	LOCK
-	decl	NWAITERS(%ebx)
-.Lerrno_exit:
-#ifdef PIC
-	SETUP_PIC_REG(bx)
-#else
-	movl	$4f, %ebx
-4:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ebx), %edx
-	addl	%gs:0, %edx
-	movl	%esi, (%edx)
-#else
-	movl	errno@gotntpoff(%ebx), %edx
-	movl	%esi, %gs:(%edx)
-#endif
-
-	orl	$-1, %eax
-	jmp	10b
-	.size	sem_timedwait,.-sem_timedwait
-
-
-	.type	sem_wait_cleanup,@function
-sem_wait_cleanup:
-	LOCK
-	decl	NWAITERS(%ebx)
-	movl	%eax, (%esp)
-.LcallUR:
-	call	_Unwind_Resume@PLT
-	hlt
-.LENDCODE:
-	.size	sem_wait_cleanup,.-sem_wait_cleanup
-
-
-	.section .gcc_except_table,"a",@progbits
-.LexceptSTART:
-	.byte	0xff				# @LPStart format (omit)
-	.byte	0xff				# @TType format (omit)
-	.byte	0x01				# call-site format
-						# DW_EH_PE_uleb128
-	.uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
-	.uleb128 .LcleanupSTART-.LSTARTCODE
-	.uleb128 .LcleanupEND-.LcleanupSTART
-	.uleb128 sem_wait_cleanup-.LSTARTCODE
-	.uleb128  0
-	.uleb128 .LcallUR-.LSTARTCODE
-	.uleb128 .LENDCODE-.LcallUR
-	.uleb128 0
-	.uleb128  0
-.Lcstend:
-
-
-	.section .eh_frame,"a",@progbits
-.LSTARTFRAME:
-	.long	.LENDCIE-.LSTARTCIE		# Length of the CIE.
-.LSTARTCIE:
-	.long	0				# CIE ID.
-	.byte	1				# Version number.
-#ifdef SHARED
-	.string	"zPLR"				# NUL-terminated augmentation
-						# string.
-#else
-	.string	"zPL"				# NUL-terminated augmentation
-						# string.
-#endif
-	.uleb128 1				# Code alignment factor.
-	.sleb128 -4				# Data alignment factor.
-	.byte	8				# Return address register
-						# column.
-#ifdef SHARED
-	.uleb128 7				# Augmentation value length.
-	.byte	0x9b				# Personality: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4
-						# + DW_EH_PE_indirect
-	.long	DW.ref.__gcc_personality_v0-.
-	.byte	0x1b				# LSDA Encoding: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4.
-	.byte	0x1b				# FDE Encoding: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4.
-#else
-	.uleb128 6				# Augmentation value length.
-	.byte	0x0				# Personality: absolute
-	.long	__gcc_personality_v0
-	.byte	0x0				# LSDA Encoding: absolute
-#endif
-	.byte 0x0c				# DW_CFA_def_cfa
-	.uleb128 4
-	.uleb128 4
-	.byte	0x88				# DW_CFA_offset, column 0x10
-	.uleb128 1
-	.align 4
-.LENDCIE:
-
-	.long	.LENDFDE-.LSTARTFDE		# Length of the FDE.
-.LSTARTFDE:
-	.long	.LSTARTFDE-.LSTARTFRAME		# CIE pointer.
-#ifdef SHARED
-	.long	.LSTARTCODE-.			# PC-relative start address
-						# of the code.
-#else
-	.long	.LSTARTCODE			# Start address of the code.
-#endif
-	.long	.LENDCODE-.LSTARTCODE		# Length of the code.
-	.uleb128 4				# Augmentation size
-#ifdef SHARED
-	.long	.LexceptSTART-.
-#else
-	.long	.LexceptSTART
-#endif
-
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpush_esi-.LSTARTCODE
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 8
-	.byte   0x86				# DW_CFA_offset %esi
-	.uleb128 2
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpush_edi-.Lpush_esi
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 12
-	.byte   0x87				# DW_CFA_offset %edi
-	.uleb128 3
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpush_ebx-.Lpush_edi
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 16
-	.byte   0x83				# DW_CFA_offset %ebx
-	.uleb128 4
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lsub_esp-.Lpush_ebx
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 28
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Ladd_esp-.Lsub_esp
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 16
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpop_ebx-.Ladd_esp
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 12
-	.byte	0xc3				# DW_CFA_restore %ebx
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpop_edi-.Lpop_ebx
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 8
-	.byte	0xc7				# DW_CFA_restore %edi
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpop_esi-.Lpop_edi
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 4
-	.byte	0xc6				# DW_CFA_restore %esi
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lafter_ret-.Lpop_esi
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 28
-	.byte   0x86				# DW_CFA_offset %esi
-	.uleb128 2
-	.byte   0x87				# DW_CFA_offset %edi
-	.uleb128 3
-	.byte   0x83				# DW_CFA_offset %ebx
-	.uleb128 4
-	.align	4
-.LENDFDE:
-
-
-#ifdef SHARED
-	.hidden	DW.ref.__gcc_personality_v0
-	.weak	DW.ref.__gcc_personality_v0
-	.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
-	.align	4
-	.type	DW.ref.__gcc_personality_v0, @object
-	.size	DW.ref.__gcc_personality_v0, 4
-DW.ref.__gcc_personality_v0:
-	.long	__gcc_personality_v0
-#endif
diff --git a/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S b/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S
deleted file mode 100644
index 2524d96aea..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i486/sem_trywait.S
+++ /dev/null
@@ -1,67 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <lowlevellock.h>
-
-	.text
-
-	.globl	__new_sem_trywait
-	.type	__new_sem_trywait,@function
-	.align	16
-__new_sem_trywait:
-	movl	4(%esp), %ecx
-
-	movl	(%ecx), %eax
-2:	testl	%eax, %eax
-	jz	1f
-
-	leal	-1(%eax), %edx
-	LOCK
-	cmpxchgl %edx, (%ecx)
-	jne	2b
-	xorl	%eax, %eax
-	ret
-
-1:
-#ifdef PIC
-	SETUP_PIC_REG(cx)
-#else
-	movl	$3f, %ecx
-3:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ecx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ecx), %edx
-	addl	%gs:0, %edx
-	movl	$EAGAIN, (%edx)
-#else
-	movl	errno@gotntpoff(%ecx), %edx
-	movl	$EAGAIN, %gs:(%edx)
-#endif
-	orl	$-1, %eax
-	ret
-	.size	__new_sem_trywait,.-__new_sem_trywait
-	versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1)
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
-	.global	__old_sem_trywait
-__old_sem_trywait = __new_sem_trywait
-	compat_symbol(libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0)
-#endif
diff --git a/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S b/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S
deleted file mode 100644
index 9121041ecc..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i486/sem_wait.S
+++ /dev/null
@@ -1,343 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-#include <lowlevellock.h>
-
-
-#if VALUE != 0
-# error "code needs to be rewritten for VALUE != 0"
-#endif
-
-	.text
-
-	.globl	__new_sem_wait
-	.type	__new_sem_wait,@function
-	.align	16
-__new_sem_wait:
-.LSTARTCODE:
-	pushl	%ebx
-.Lpush_ebx:
-	pushl	%esi
-.Lpush_esi:
-	subl	$4, %esp
-.Lsub_esp:
-
-	movl	16(%esp), %ebx
-
-	movl	(%ebx), %eax
-2:	testl	%eax, %eax
-	je	1f
-
-	leal	-1(%eax), %edx
-	LOCK
-	cmpxchgl %edx, (%ebx)
-	jne	2b
-7:	xorl	%eax, %eax
-
-9:	movl	4(%esp), %esi
-	movl	8(%esp), %ebx
-	addl	$12, %esp
-.Ladd_esp:
-	ret
-
-.Lafter_ret:
-1:	LOCK
-	incl	NWAITERS(%ebx)
-
-.LcleanupSTART:
-6:	call	__pthread_enable_asynccancel
-	movl	%eax, (%esp)
-
-#if FUTEX_WAIT == 0
-	movl	PRIVATE(%ebx), %ecx
-#else
-	movl	$FUTEX_WAIT, %ecx
-	orl	PRIVATE(%ebx), %ecx
-#endif
-	xorl	%esi, %esi
-	xorl	%edx, %edx
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-	movl	%eax, %esi
-
-	movl	(%esp), %eax
-	call	__pthread_disable_asynccancel
-.LcleanupEND:
-
-	testl	%esi, %esi
-	je	3f
-	cmpl	$-EWOULDBLOCK, %esi
-	jne	4f
-
-3:
-	movl	(%ebx), %eax
-5:	testl	%eax, %eax
-	je	6b
-
-	leal	-1(%eax), %edx
-	LOCK
-	cmpxchgl %edx, (%ebx)
-	jne	5b
-
-	LOCK
-	decl	NWAITERS(%ebx)
-	jmp	7b
-
-4:	LOCK
-	decl	NWAITERS(%ebx)
-
-	negl	%esi
-#ifdef PIC
-	SETUP_PIC_REG(bx)
-#else
-	movl	$8f, %ebx
-8:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ebx), %edx
-	addl	%gs:0, %edx
-	movl	%esi, (%edx)
-#else
-	movl	errno@gotntpoff(%ebx), %edx
-	movl	%esi, %gs:(%edx)
-#endif
-	orl	$-1, %eax
-
-	jmp	9b
-	.size	__new_sem_wait,.-__new_sem_wait
-	versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
-
-
-	.type	sem_wait_cleanup,@function
-sem_wait_cleanup:
-	LOCK
-	decl	NWAITERS(%ebx)
-	movl	%eax, (%esp)
-.LcallUR:
-	call	_Unwind_Resume@PLT
-	hlt
-.LENDCODE:
-	.size	sem_wait_cleanup,.-sem_wait_cleanup
-
-
-	.section .gcc_except_table,"a",@progbits
-.LexceptSTART:
-	.byte	0xff				# @LPStart format (omit)
-	.byte	0xff				# @TType format (omit)
-	.byte	0x01				# call-site format
-						# DW_EH_PE_uleb128
-	.uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
-	.uleb128 .LcleanupSTART-.LSTARTCODE
-	.uleb128 .LcleanupEND-.LcleanupSTART
-	.uleb128 sem_wait_cleanup-.LSTARTCODE
-	.uleb128  0
-	.uleb128 .LcallUR-.LSTARTCODE
-	.uleb128 .LENDCODE-.LcallUR
-	.uleb128 0
-	.uleb128  0
-.Lcstend:
-
-
-	.section .eh_frame,"a",@progbits
-.LSTARTFRAME:
-	.long	.LENDCIE-.LSTARTCIE		# Length of the CIE.
-.LSTARTCIE:
-	.long	0				# CIE ID.
-	.byte	1				# Version number.
-#ifdef SHARED
-	.string	"zPLR"				# NUL-terminated augmentation
-						# string.
-#else
-	.string	"zPL"				# NUL-terminated augmentation
-						# string.
-#endif
-	.uleb128 1				# Code alignment factor.
-	.sleb128 -4				# Data alignment factor.
-	.byte	8				# Return address register
-						# column.
-#ifdef SHARED
-	.uleb128 7				# Augmentation value length.
-	.byte	0x9b				# Personality: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4
-						# + DW_EH_PE_indirect
-	.long	DW.ref.__gcc_personality_v0-.
-	.byte	0x1b				# LSDA Encoding: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4.
-	.byte	0x1b				# FDE Encoding: DW_EH_PE_pcrel
-						# + DW_EH_PE_sdata4.
-#else
-	.uleb128 6				# Augmentation value length.
-	.byte	0x0				# Personality: absolute
-	.long	__gcc_personality_v0
-	.byte	0x0				# LSDA Encoding: absolute
-#endif
-	.byte 0x0c				# DW_CFA_def_cfa
-	.uleb128 4
-	.uleb128 4
-	.byte	0x88				# DW_CFA_offset, column 0x10
-	.uleb128 1
-	.align 4
-.LENDCIE:
-
-	.long	.LENDFDE-.LSTARTFDE		# Length of the FDE.
-.LSTARTFDE:
-	.long	.LSTARTFDE-.LSTARTFRAME		# CIE pointer.
-#ifdef SHARED
-	.long	.LSTARTCODE-.			# PC-relative start address
-						# of the code.
-#else
-	.long	.LSTARTCODE			# Start address of the code.
-#endif
-	.long	.LENDCODE-.LSTARTCODE		# Length of the code.
-	.uleb128 4				# Augmentation size
-#ifdef SHARED
-	.long	.LexceptSTART-.
-#else
-	.long	.LexceptSTART
-#endif
-
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpush_ebx-.LSTARTCODE
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 8
-	.byte   0x83				# DW_CFA_offset %ebx
-	.uleb128 2
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lpush_esi-.Lpush_ebx
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 12
-	.byte   0x86				# DW_CFA_offset %esi
-	.uleb128 3
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lsub_esp-.Lpush_esi
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 16
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Ladd_esp-.Lsub_esp
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 4
-	.byte	0xc3				# DW_CFA_restore %ebx
-	.byte	0xc6				# DW_CFA_restore %esi
-	.byte	4				# DW_CFA_advance_loc4
-	.long	.Lafter_ret-.Ladd_esp
-	.byte	14				# DW_CFA_def_cfa_offset
-	.uleb128 16
-	.byte   0x83				# DW_CFA_offset %ebx
-	.uleb128 2
-	.byte   0x86				# DW_CFA_offset %esi
-	.uleb128 3
-	.align	4
-.LENDFDE:
-
-
-#ifdef SHARED
-	.hidden	DW.ref.__gcc_personality_v0
-	.weak	DW.ref.__gcc_personality_v0
-	.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
-	.align	4
-	.type	DW.ref.__gcc_personality_v0, @object
-	.size	DW.ref.__gcc_personality_v0, 4
-DW.ref.__gcc_personality_v0:
-	.long	__gcc_personality_v0
-#endif
-
-
-#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
-	.section ".text.compat", "ax"
-	.global	__old_sem_wait
-	.type	__old_sem_wait,@function
-	.align	16
-	cfi_startproc
-__old_sem_wait:
-	pushl	%ebx
-	cfi_adjust_cfa_offset(4)
-	pushl	%esi
-	cfi_adjust_cfa_offset(4)
-	subl	$4, %esp
-	cfi_adjust_cfa_offset(4)
-
-	movl	16(%esp), %ebx
-	cfi_offset(ebx, -8)
-
-	cfi_offset(esi, -12)
-3:	movl	(%ebx), %eax
-2:	testl	%eax, %eax
-	je	1f
-
-	leal	-1(%eax), %edx
-	LOCK
-	cmpxchgl %edx, (%ebx)
-	jne	2b
-	xorl	%eax, %eax
-
-5:	movl	4(%esp), %esi
-	movl	8(%esp), %ebx
-	addl	$12, %esp
-	cfi_restore(ebx)
-	cfi_restore(esi)
-	cfi_adjust_cfa_offset(-12)
-	ret
-
-	cfi_adjust_cfa_offset(12)
-	cfi_offset(ebx, -8)
-	cfi_offset(esi, -12)
-1:	call	__pthread_enable_asynccancel
-	movl	%eax, (%esp)
-
-	xorl	%esi, %esi
-	movl	$SYS_futex, %eax
-	movl	%esi, %ecx
-	movl	%esi, %edx
-	ENTER_KERNEL
-	movl	%eax, %esi
-
-	movl	(%esp), %eax
-	call	__pthread_disable_asynccancel
-
-	testl	%esi, %esi
-	je	3b
-	cmpl	$-EWOULDBLOCK, %esi
-	je	3b
-	negl	%esi
-#ifdef PIC
-	SETUP_PIC_REG(bx)
-#else
-	movl	$4f, %ebx
-4:
-#endif
-	addl	$_GLOBAL_OFFSET_TABLE_, %ebx
-#ifdef NO_TLS_DIRECT_SEG_REFS
-	movl	errno@gotntpoff(%ebx), %edx
-	addl	%gs:0, %edx
-	movl	%esi, (%edx)
-#else
-	movl	errno@gotntpoff(%ebx), %edx
-	movl	%esi, %gs:(%edx)
-#endif
-	orl	$-1, %eax
-	jmp	5b
-	cfi_endproc
-	.size	__old_sem_wait,.-__old_sem_wait
-	compat_symbol(libpthread, __old_sem_wait, sem_wait, GLIBC_2_0)
-#endif
diff --git a/sysdeps/unix/sysv/linux/i386/i586/sem_post.S b/sysdeps/unix/sysv/linux/i386/i586/sem_post.S
deleted file mode 100644
index 4534d567d8..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i586/sem_post.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_post.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i586/sem_timedwait.S b/sysdeps/unix/sysv/linux/i386/i586/sem_timedwait.S
deleted file mode 100644
index fa4ad496e5..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i586/sem_timedwait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_timedwait.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i586/sem_trywait.S b/sysdeps/unix/sysv/linux/i386/i586/sem_trywait.S
deleted file mode 100644
index 6f3a690d77..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i586/sem_trywait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_trywait.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i586/sem_wait.S b/sysdeps/unix/sysv/linux/i386/i586/sem_wait.S
deleted file mode 100644
index 718d50d680..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i586/sem_wait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_wait.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i686/sem_post.S b/sysdeps/unix/sysv/linux/i386/i686/sem_post.S
deleted file mode 100644
index 4534d567d8..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i686/sem_post.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_post.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i686/sem_timedwait.S b/sysdeps/unix/sysv/linux/i386/i686/sem_timedwait.S
deleted file mode 100644
index fa4ad496e5..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i686/sem_timedwait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_timedwait.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i686/sem_trywait.S b/sysdeps/unix/sysv/linux/i386/i686/sem_trywait.S
deleted file mode 100644
index 6f3a690d77..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i686/sem_trywait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_trywait.S"
diff --git a/sysdeps/unix/sysv/linux/i386/i686/sem_wait.S b/sysdeps/unix/sysv/linux/i386/i686/sem_wait.S
deleted file mode 100644
index 718d50d680..0000000000
--- a/sysdeps/unix/sysv/linux/i386/i686/sem_wait.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/* Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
-
-   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 "../i486/sem_wait.S"
diff --git a/sysdeps/unix/sysv/linux/powerpc/sem_post.c b/sysdeps/unix/sysv/linux/powerpc/sem_post.c
deleted file mode 100644
index 6a4e46fb9d..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/sem_post.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* sem_post -- post to a POSIX semaphore.  Powerpc version.
-   Copyright (C) 2003-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003.
-
-   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 <sysdep.h>
-#include <lowlevellock.h>
-#include <internaltypes.h>
-#include <semaphore.h>
-
-#include <shlib-compat.h>
-
-int
-__new_sem_post (sem_t *sem)
-{
-  struct new_sem *isem = (struct new_sem *) sem;
-
-  __asm __volatile (__ARCH_REL_INSTR ::: "memory");
-  atomic_increment (&isem->value);
-  __asm __volatile (__ARCH_ACQ_INSTR ::: "memory");
-  if (isem->nwaiters > 0)
-    {
-      int err = lll_futex_wake (&isem->value, 1,
-				isem->private ^ FUTEX_PRIVATE_FLAG);
-      if (__builtin_expect (err, 0) < 0)
-	{
-	  __set_errno (-err);
-	  return -1;
-	}
-    }
-  return 0;
-}
-versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1);
-
-#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
-
-int
-attribute_compat_text_section
-__old_sem_post (sem_t *sem)
-{
-  int *futex = (int *) sem;
-
-  __asm __volatile (__ARCH_REL_INSTR ::: "memory");
-  (void) atomic_increment_val (futex);
-  /* We always have to assume it is a shared semaphore.  */
-  int err = lll_futex_wake (futex, 1, LLL_SHARED);
-  if (__builtin_expect (err, 0) < 0)
-    {
-      __set_errno (-err);
-      return -1;
-    }
-  return 0;
-}
-
-compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0);
-#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/sem_post.S b/sysdeps/unix/sysv/linux/x86_64/sem_post.S
deleted file mode 100644
index f5dfb0536e..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/sem_post.S
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <lowlevellock.h>
-#include <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-
-
-	.text
-
-	.globl	sem_post
-	.type	sem_post,@function
-	.align	16
-sem_post:
-#if VALUE == 0
-	movl	(%rdi), %eax
-#else
-	movl	VALUE(%rdi), %eax
-#endif
-0:	cmpl	$SEM_VALUE_MAX, %eax
-	je	3f
-	leal	1(%rax), %esi
-	LOCK
-#if VALUE == 0
-	cmpxchgl %esi, (%rdi)
-#else
-	cmpxchgl %esi, VALUE(%rdi)
-#endif
-	jnz	0b
-
-	LP_OP(cmp) $0, NWAITERS(%rdi)
-	je	2f
-
-	movl	$SYS_futex, %eax
-	movl	$FUTEX_WAKE, %esi
-	orl	PRIVATE(%rdi), %esi
-	movl	$1, %edx
-	syscall
-
-	testq	%rax, %rax
-	js	1f
-
-2:	xorl	%eax, %eax
-	retq
-
-1:
-	movl	$EINVAL, %eax
-	jmp	4f
-
-3:
-	movl	$EOVERFLOW, %eax
-
-4:
-	movq	errno@gottpoff(%rip), %rdx
-	movl	%eax, %fs:(%rdx)
-	orl	$-1, %eax
-	retq
-	.size	sem_post,.-sem_post
diff --git a/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S b/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S
deleted file mode 100644
index 091b2411b4..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S
+++ /dev/null
@@ -1,380 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <kernel-features.h>
-#include <lowlevellock.h>
-#include <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-
-	.text
-
-	.globl	sem_timedwait
-	.type	sem_timedwait,@function
-	.align	16
-sem_timedwait:
-.LSTARTCODE:
-	cfi_startproc
-#ifdef SHARED
-	cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
-			DW.ref.__gcc_personality_v0)
-	cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
-#else
-	cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0)
-	cfi_lsda(DW_EH_PE_udata4, .LexceptSTART)
-#endif
-#if VALUE == 0
-	movl	(%rdi), %eax
-#else
-	movl	VALUE(%rdi), %eax
-#endif
-2:	testl	%eax, %eax
-	je	1f
-
-	leaq	-1(%rax), %rdx
-	LOCK
-#if VALUE == 0
-	cmpxchgl %edx, (%rdi)
-#else
-	cmpxchgl %edx, VALUE(%rdi)
-#endif
-	jne	2b
-
-	xorl	%eax, %eax
-	retq
-
-	/* Check whether the timeout value is valid.  */
-1:	cmpq	$1000000000, 8(%rsi)
-	jae	6f
-
-#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
-#  ifdef PIC
-	cmpl	$0, __have_futex_clock_realtime(%rip)
-#  else
-	cmpl	$0, __have_futex_clock_realtime
-#  endif
-	je	.Lreltmo
-#endif
-
-	cmpq	$0, (%rsi)
-	js	16f
-
-	/* This push is only needed to store the sem_t pointer for the
-	   exception handler.  */
-	pushq	%rdi
-	cfi_adjust_cfa_offset(8)
-
-	movq	%rsi, %r10
-
-	LOCK
-	LP_OP(add) $1, NWAITERS(%rdi)
-
-.LcleanupSTART:
-13:	call	__pthread_enable_asynccancel
-	movl	%eax, %r8d
-
-#if VALUE != 0
-	leaq	VALUE(%rdi), %rdi
-#endif
-	movl	$0xffffffff, %r9d
-	movl	$FUTEX_WAIT_BITSET|FUTEX_CLOCK_REALTIME, %esi
-	orl	PRIVATE(%rdi), %esi
-	movl	$SYS_futex, %eax
-	xorl	%edx, %edx
-	syscall
-	movq	%rax, %r9
-#if VALUE != 0
-	leaq	-VALUE(%rdi), %rdi
-#endif
-
-	xchgq	%r8, %rdi
-	call	__pthread_disable_asynccancel
-.LcleanupEND:
-	movq	%r8, %rdi
-
-	testq	%r9, %r9
-	je	11f
-	cmpq	$-EWOULDBLOCK, %r9
-	jne	3f
-
-11:
-#if VALUE == 0
-	movl	(%rdi), %eax
-#else
-	movl	VALUE(%rdi), %eax
-#endif
-14:	testl	%eax, %eax
-	je	13b
-
-	leaq	-1(%rax), %rcx
-	LOCK
-#if VALUE == 0
-	cmpxchgl %ecx, (%rdi)
-#else
-	cmpxchgl %ecx, VALUE(%rdi)
-#endif
-	jne	14b
-
-	xorl	%eax, %eax
-
-15:	LOCK
-	LP_OP(sub) $1, NWAITERS(%rdi)
-
-	leaq	8(%rsp), %rsp
-	cfi_adjust_cfa_offset(-8)
-	retq
-
-	cfi_adjust_cfa_offset(8)
-3:	negq	%r9
-	movq	errno@gottpoff(%rip), %rdx
-	movl	%r9d, %fs:(%rdx)
-
-	orl	$-1, %eax
-	jmp	15b
-
-	cfi_adjust_cfa_offset(-8)
-6:
-	movq	errno@gottpoff(%rip), %rdx
-	movl	$EINVAL, %fs:(%rdx)
-
-	orl	$-1, %eax
-
-	retq
-
-16:
-	movq	errno@gottpoff(%rip), %rdx
-	movl	$ETIMEDOUT, %fs:(%rdx)
-
-	orl	$-1, %eax
-
-	retq
-
-#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
-.Lreltmo:
-	pushq	%r12
-	cfi_adjust_cfa_offset(8)
-	cfi_rel_offset(%r12, 0)
-	pushq	%r13
-	cfi_adjust_cfa_offset(8)
-	cfi_rel_offset(%r13, 0)
-	pushq	%r14
-	cfi_adjust_cfa_offset(8)
-	cfi_rel_offset(%r14, 0)
-
-#ifdef __ASSUME_FUTEX_CLOCK_REALTIME
-# define STACKFRAME 8
-#else
-# define STACKFRAME 24
-#endif
-	subq	$STACKFRAME, %rsp
-	cfi_adjust_cfa_offset(STACKFRAME)
-
-	movq	%rdi, %r12
-	movq	%rsi, %r13
-
-	LOCK
-	LP_OP(add) $1, NWAITERS(%r12)
-
-7:	xorl	%esi, %esi
-	movq	%rsp,%rdi
-	/* This call works because we directly jump to a system call entry
-	   which preserves all the registers.  */
-	call	JUMPTARGET(__gettimeofday)
-
-	/* Compute relative timeout.  */
-	movq	8(%rsp), %rax
-	movl	$1000, %edi
-	mul	%rdi		/* Milli seconds to nano seconds.  */
-	movq	(%r13), %rdi
-	movq	8(%r13), %rsi
-	subq	(%rsp), %rdi
-	subq	%rax, %rsi
-	jns	5f
-	addq	$1000000000, %rsi
-	decq	%rdi
-5:	testq	%rdi, %rdi
-	movl	$ETIMEDOUT, %r14d
-	js	36f		/* Time is already up.  */
-
-	movq	%rdi, (%rsp)	/* Store relative timeout.  */
-	movq	%rsi, 8(%rsp)
-
-.LcleanupSTART2:
-	call	__pthread_enable_asynccancel
-	movl	%eax, 16(%rsp)
-
-	movq	%rsp, %r10
-# if VALUE == 0
-	movq	%r12, %rdi
-# else
-	leaq	VALUE(%r12), %rdi
-# endif
-# if FUTEX_WAIT == 0
-	movl	PRIVATE(%rdi), %esi
-# else
-	movl	$FUTEX_WAIT, %esi
-	orl	PRIVATE(%rdi), %esi
-# endif
-	movl	$SYS_futex, %eax
-	xorl	%edx, %edx
-	syscall
-	movq	%rax, %r14
-
-	movl	16(%rsp), %edi
-	call	__pthread_disable_asynccancel
-.LcleanupEND2:
-
-	testq	%r14, %r14
-	je	9f
-	cmpq	$-EWOULDBLOCK, %r14
-	jne	33f
-
-9:
-# if VALUE == 0
-	movl	(%r12), %eax
-# else
-	movl	VALUE(%r12), %eax
-# endif
-8:	testl	%eax, %eax
-	je	7b
-
-	leaq	-1(%rax), %rcx
-	LOCK
-# if VALUE == 0
-	cmpxchgl %ecx, (%r12)
-# else
-	cmpxchgl %ecx, VALUE(%r12)
-# endif
-	jne	8b
-
-	xorl	%eax, %eax
-
-45:	LOCK
-	LP_OP(sub) $1, NWAITERS(%r12)
-
-	addq	$STACKFRAME, %rsp
-	cfi_adjust_cfa_offset(-STACKFRAME)
-	popq	%r14
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r14)
-	popq	%r13
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r13)
-	popq	%r12
-	cfi_adjust_cfa_offset(-8)
-	cfi_restore(%r12)
-	retq
-
-	cfi_adjust_cfa_offset(STACKFRAME + 3 * 8)
-	cfi_rel_offset(%r12, STACKFRAME + 2 * 8)
-	cfi_rel_offset(%r13, STACKFRAME + 1 * 8)
-	cfi_rel_offset(%r14, STACKFRAME)
-33:	negq	%r14
-36:
-	movq	errno@gottpoff(%rip), %rdx
-	movl	%r14d, %fs:(%rdx)
-
-	orl	$-1, %eax
-	jmp	45b
-#endif
-	cfi_endproc
-	.size	sem_timedwait,.-sem_timedwait
-
-
-	.type	sem_timedwait_cleanup,@function
-sem_timedwait_cleanup:
-	cfi_startproc
-	cfi_adjust_cfa_offset(8)
-
-	movq	(%rsp), %rdi
-	LOCK
-	LP_OP(sub) $1, NWAITERS(%rdi)
-	movq	%rax, %rdi
-.LcallUR:
-	call	_Unwind_Resume@PLT
-	hlt
-.LENDCODE:
-	cfi_endproc
-	.size	sem_timedwait_cleanup,.-sem_timedwait_cleanup
-
-
-#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
-	.type	sem_timedwait_cleanup2,@function
-sem_timedwait_cleanup2:
-	cfi_startproc
-	cfi_adjust_cfa_offset(STACKFRAME + 3 * 8)
-	cfi_rel_offset(%r12, STACKFRAME + 2 * 8)
-	cfi_rel_offset(%r13, STACKFRAME + 1 * 8)
-	cfi_rel_offset(%r14, STACKFRAME)
-
-	LOCK
-	LP_OP(sub) $1, NWAITERS(%r12)
-	movq	%rax, %rdi
-	movq	STACKFRAME(%rsp), %r14
-	movq	STACKFRAME+8(%rsp), %r13
-	movq	STACKFRAME+16(%rsp), %r12
-.LcallUR2:
-	call	_Unwind_Resume@PLT
-	hlt
-.LENDCODE2:
-	cfi_endproc
-	.size	sem_timedwait_cleanup2,.-sem_timedwait_cleanup2
-#endif
-
-
-	.section .gcc_except_table,"a",@progbits
-.LexceptSTART:
-	.byte	DW_EH_PE_omit			# @LPStart format
-	.byte	DW_EH_PE_omit			# @TType format
-	.byte	DW_EH_PE_uleb128		# call-site format
-	.uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
-	.uleb128 .LcleanupSTART-.LSTARTCODE
-	.uleb128 .LcleanupEND-.LcleanupSTART
-	.uleb128 sem_timedwait_cleanup-.LSTARTCODE
-	.uleb128  0
-#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
-	.uleb128 .LcleanupSTART2-.LSTARTCODE
-	.uleb128 .LcleanupEND2-.LcleanupSTART2
-	.uleb128 sem_timedwait_cleanup2-.LSTARTCODE
-	.uleb128  0
-#endif
-	.uleb128 .LcallUR-.LSTARTCODE
-	.uleb128 .LENDCODE-.LcallUR
-	.uleb128 0
-	.uleb128  0
-#ifndef __ASSUME_FUTEX_CLOCK_REALTIME
-	.uleb128 .LcallUR2-.LSTARTCODE
-	.uleb128 .LENDCODE2-.LcallUR2
-	.uleb128 0
-	.uleb128  0
-#endif
-.Lcstend:
-
-
-#ifdef SHARED
-	.hidden	DW.ref.__gcc_personality_v0
-	.weak	DW.ref.__gcc_personality_v0
-	.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
-	.align	LP_SIZE
-	.type	DW.ref.__gcc_personality_v0, @object
-	.size	DW.ref.__gcc_personality_v0, LP_SIZE
-DW.ref.__gcc_personality_v0:
-	ASM_ADDR __gcc_personality_v0
-#endif
diff --git a/sysdeps/unix/sysv/linux/x86_64/sem_trywait.S b/sysdeps/unix/sysv/linux/x86_64/sem_trywait.S
deleted file mode 100644
index 1838e96223..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/sem_trywait.S
+++ /dev/null
@@ -1,47 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <lowlevellock.h>
-#include <shlib-compat.h>
-#include <pthread-errnos.h>
-
-	.text
-
-	.globl	sem_trywait
-	.type	sem_trywait,@function
-	.align	16
-sem_trywait:
-	movl	(%rdi), %eax
-2:	testl	%eax, %eax
-	jz	1f
-
-	leal	-1(%rax), %edx
-	LOCK
-	cmpxchgl %edx, (%rdi)
-	jne	2b
-
-	xorl	%eax, %eax
-	retq
-
-1:
-	movq	errno@gottpoff(%rip), %rdx
-	movl	$EAGAIN, %fs:(%rdx)
-	orl	$-1, %eax
-	retq
-	.size	sem_trywait,.-sem_trywait
diff --git a/sysdeps/unix/sysv/linux/x86_64/sem_wait.S b/sysdeps/unix/sysv/linux/x86_64/sem_wait.S
deleted file mode 100644
index 2e7b131923..0000000000
--- a/sysdeps/unix/sysv/linux/x86_64/sem_wait.S
+++ /dev/null
@@ -1,176 +0,0 @@
-/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
-   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 <lowlevellock.h>
-#include <shlib-compat.h>
-#include <pthread-errnos.h>
-#include <structsem.h>
-
-
-	.text
-
-	.globl	sem_wait
-	.type	sem_wait,@function
-	.align	16
-sem_wait:
-.LSTARTCODE:
-	cfi_startproc
-#ifdef SHARED
-	cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
-			DW.ref.__gcc_personality_v0)
-	cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
-#else
-	cfi_personality(DW_EH_PE_udata4, __gcc_personality_v0)
-	cfi_lsda(DW_EH_PE_udata4, .LexceptSTART)
-#endif
-
-#if VALUE == 0
-	movl	(%rdi), %eax
-#else
-	movl	VALUE(%rdi), %eax
-#endif
-2:	testl	%eax, %eax
-	je	1f
-
-	leal	-1(%rax), %edx
-	LOCK
-#if VALUE == 0
-	cmpxchgl %edx, (%rdi)
-#else
-	cmpxchgl %edx, VALUE(%rdi)
-#endif
-	jne	2b
-
-	xorl	%eax, %eax
-	retq
-
-	/* This push is only needed to store the sem_t pointer for the
-	   exception handler.  */
-1:	pushq	%rdi
-	cfi_adjust_cfa_offset(8)
-
-	LOCK
-	LP_OP(add) $1, NWAITERS(%rdi)
-
-.LcleanupSTART:
-6:	call	__pthread_enable_asynccancel
-	movl	%eax, %r8d
-
-	xorq	%r10, %r10
-	movl	$SYS_futex, %eax
-#if FUTEX_WAIT == 0
-	movl	PRIVATE(%rdi), %esi
-#else
-	movl	$FUTEX_WAIT, %esi
-	orl	PRIVATE(%rdi), %esi
-#endif
-	xorl	%edx, %edx
-	syscall
-	movq	%rax, %rcx
-
-	xchgq	%r8, %rdi
-	call	__pthread_disable_asynccancel
-.LcleanupEND:
-	movq	%r8, %rdi
-
-	testq	%rcx, %rcx
-	je	3f
-	cmpq	$-EWOULDBLOCK, %rcx
-	jne	4f
-
-3:
-#if VALUE == 0
-	movl	(%rdi), %eax
-#else
-	movl	VALUE(%rdi), %eax
-#endif
-5:	testl	%eax, %eax
-	je	6b
-
-	leal	-1(%rax), %edx
-	LOCK
-#if VALUE == 0
-	cmpxchgl %edx, (%rdi)
-#else
-	cmpxchgl %edx, VALUE(%rdi)
-#endif
-	jne	5b
-
-	xorl	%eax, %eax
-
-9:	LOCK
-	LP_OP(sub) $1, NWAITERS(%rdi)
-
-	leaq	8(%rsp), %rsp
-	cfi_adjust_cfa_offset(-8)
-
-	retq
-
-	cfi_adjust_cfa_offset(8)
-4:	negq	%rcx
-	movq	errno@gottpoff(%rip), %rdx
-	movl	%ecx, %fs:(%rdx)
-	orl	$-1, %eax
-
-	jmp 9b
-	.size	sem_wait,.-sem_wait
-
-
-	.type	sem_wait_cleanup,@function
-sem_wait_cleanup:
-	movq	(%rsp), %rdi
-	LOCK
-	LP_OP(sub) $1, NWAITERS(%rdi)
-	movq	%rax, %rdi
-.LcallUR:
-	call	_Unwind_Resume@PLT
-	hlt
-.LENDCODE:
-	cfi_endproc
-	.size	sem_wait_cleanup,.-sem_wait_cleanup
-
-
-	.section .gcc_except_table,"a",@progbits
-.LexceptSTART:
-	.byte	DW_EH_PE_omit			# @LPStart format
-	.byte	DW_EH_PE_omit			# @TType format
-	.byte	DW_EH_PE_uleb128		# call-site format
-	.uleb128 .Lcstend-.Lcstbegin
-.Lcstbegin:
-	.uleb128 .LcleanupSTART-.LSTARTCODE
-	.uleb128 .LcleanupEND-.LcleanupSTART
-	.uleb128 sem_wait_cleanup-.LSTARTCODE
-	.uleb128  0
-	.uleb128 .LcallUR-.LSTARTCODE
-	.uleb128 .LENDCODE-.LcallUR
-	.uleb128 0
-	.uleb128  0
-.Lcstend:
-
-
-#ifdef SHARED
-	.hidden	DW.ref.__gcc_personality_v0
-	.weak	DW.ref.__gcc_personality_v0
-	.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
-	.align	LP_SIZE
-	.type	DW.ref.__gcc_personality_v0, @object
-	.size	DW.ref.__gcc_personality_v0, LP_SIZE
-DW.ref.__gcc_personality_v0:
-	ASM_ADDR __gcc_personality_v0
-#endif