pthread_once: Add fast path and remove x86 variants.

1 files changed, 0 insertions, 178 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/pthread_once.S b/sysdeps/unix/sysv/linux/i386/pthread_once.S
deleted file mode 100644
index dacd724d8b..0000000000
--- a/sysdeps/unix/sysv/linux/i386/pthread_once.S
+++ /dev/null
@@ -1,178 +0,0 @@
-/* Copyright (C) 2002-2014 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 <unwindbuf.h>
-#include <sysdep.h>
-#include <kernel-features.h>
-#include <lowlevellock.h>
-
-
-	.comm	__fork_generation, 4, 4
-
-	.text
-
-
-	.globl	__pthread_once
-	.type	__pthread_once,@function
-	.align	16
-	cfi_startproc
-__pthread_once:
-	movl	4(%esp), %ecx
-	testl	$2, (%ecx)
-	jz	1f
-	xorl	%eax, %eax
-	ret
-
-1:	pushl	%ebx
-	cfi_adjust_cfa_offset (4)
-	cfi_rel_offset (3, 0)
-	pushl	%esi
-	cfi_adjust_cfa_offset (4)
-	cfi_rel_offset (6, 0)
-	movl	%ecx, %ebx
-	xorl	%esi, %esi
-
-	/* Not yet initialized or initialization in progress.
-	   Get the fork generation counter now.  */
-6:	movl	(%ebx), %eax
-#ifdef PIC
-	LOAD_PIC_REG(cx)
-#endif
-
-5:	movl	%eax, %edx
-
-	testl	$2, %eax
-	jnz	4f
-
-	andl	$3, %edx
-#ifdef PIC
-	orl	__fork_generation@GOTOFF(%ecx), %edx
-#else
-	orl	__fork_generation, %edx
-#endif
-	orl	$1, %edx
-
-	LOCK
-	cmpxchgl %edx, (%ebx)
-	jnz	5b
-
-	/* Check whether another thread already runs the initializer.  */
-	testl	$1, %eax
-	jz	3f	/* No -> do it.  */
-
-	/* Check whether the initializer execution was interrupted
-	   by a fork.  */
-	xorl	%edx, %eax
-	testl	$0xfffffffc, %eax
-	jnz	3f	/* Different for generation -> run initializer.  */
-
-	/* Somebody else got here first.  Wait.  */
-#ifdef __ASSUME_PRIVATE_FUTEX
-	movl	$FUTEX_WAIT|FUTEX_PRIVATE_FLAG, %ecx
-#else
-# if FUTEX_WAIT == 0
-	movl	%gs:PRIVATE_FUTEX, %ecx
-# else
-	movl	$FUTEX_WAIT, %ecx
-	orl	%gs:PRIVATE_FUTEX, %ecx
-# endif
-#endif
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-	jmp	6b
-
-3:	/* Call the initializer function after setting up the
-	   cancellation handler.  Note that it is not possible here
-	   to use the unwind-based cleanup handling.  This would require
-	   that the user-provided function and all the code it calls
-	   is compiled with exceptions.  Unfortunately this cannot be
-	   guaranteed.  */
-	subl	$UNWINDBUFSIZE+8, %esp
-	cfi_adjust_cfa_offset (UNWINDBUFSIZE+8)
-	movl	%ecx, %ebx		/* PIC register value.  */
-
-	leal	8+UWJMPBUF(%esp), %eax
-	movl	$0, 4(%esp)
-	movl	%eax, (%esp)
-	call	__sigsetjmp@PLT
-	testl	%eax, %eax
-	jne	7f
-
-	leal	8(%esp), %eax
-	call	HIDDEN_JUMPTARGET(__pthread_register_cancel)
-
-	/* Call the user-provided initialization function.  */
-	call	*24+UNWINDBUFSIZE(%esp)
-
-	/* Pop the cleanup handler.  */
-	leal	8(%esp), %eax
-	call	HIDDEN_JUMPTARGET(__pthread_unregister_cancel)
-	addl	$UNWINDBUFSIZE+8, %esp
-	cfi_adjust_cfa_offset (-UNWINDBUFSIZE-8)
-
-	/* Sucessful run of the initializer.  Signal that we are done.  */
-	movl	12(%esp), %ebx
-	LOCK
-	addl	$1, (%ebx)
-
-	/* Wake up all other threads.  */
-	movl	$0x7fffffff, %edx
-#ifdef __ASSUME_PRIVATE_FUTEX
-	movl	$FUTEX_WAKE|FUTEX_PRIVATE_FLAG, %ecx
-#else
-	movl	$FUTEX_WAKE, %ecx
-	orl	%gs:PRIVATE_FUTEX, %ecx
-#endif
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-
-4:	popl	%esi
-	cfi_adjust_cfa_offset (-4)
-	cfi_restore (6)
-	popl	%ebx
-	cfi_adjust_cfa_offset (-4)
-	cfi_restore (3)
-	xorl	%eax, %eax
-	ret
-
-7:	/* __sigsetjmp returned for the second time.  */
-	movl	20+UNWINDBUFSIZE(%esp), %ebx
-	cfi_adjust_cfa_offset (UNWINDBUFSIZE+16)
-	cfi_offset (3, -8)
-	cfi_offset (6, -12)
-	movl	$0, (%ebx)
-
-	movl	$0x7fffffff, %edx
-#ifdef __ASSUME_PRIVATE_FUTEX
-	movl	$FUTEX_WAKE|FUTEX_PRIVATE_FLAG, %ecx
-#else
-	movl	$FUTEX_WAKE, %ecx
-	orl	%gs:PRIVATE_FUTEX, %ecx
-#endif
-	movl	$SYS_futex, %eax
-	ENTER_KERNEL
-
-	leal	8(%esp), %eax
-	call	HIDDEN_JUMPTARGET (__pthread_unwind_next)
-	/* NOTREACHED */
-	hlt
-	cfi_endproc
-	.size	__pthread_once,.-__pthread_once
-
-hidden_def (__pthread_once)
-strong_alias (__pthread_once, pthread_once)