/* Copyright (C) 2003, 2004, 2007 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, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#include <sysdep.h>#include <shlib-compat.h>#include <lowlevellock.h>#include <lowlevelcond.h>#include <kernel-features.h>#include <pthread-errnos.h>#include "lowlevel-atomic.h"	.text	/* int pthread_cond_signal (pthread_cond_t *cond) */	.globl	__pthread_cond_signal	.type	__pthread_cond_signal, @function	.align	5__pthread_cond_signal:	mov.l	r8, @-r15	sts.l	pr, @-r15	mov	r4, r8	/* Get internal lock.  */	mov	#0, r3	mov	#1, r4#if cond_lock != 0	CMPXCHG (r3, @(cond_lock,r8), r4, r2)#else	CMPXCHG (r3, @r8, r4, r2)#endif	bf	1f2:	mov.l	@(total_seq+4,r8),r0	mov.l	@(total_seq,r8),r1	mov.l	@(wakeup_seq+4,r8), r2	cmp/hi	r2, r0	bt	3f	cmp/hi	r0, r2	bt	4f	mov.l	@(wakeup_seq,r8), r2	cmp/hi	r2, r1	bf	4f3:	/* Bump the wakeup number.  */	mov	#1, r2	mov	#0, r3	clrt	mov.l	@(wakeup_seq,r8),r0	mov.l	@(wakeup_seq+4,r8),r1	addc	r2, r0	addc	r3, r1	mov.l	r0,@(wakeup_seq,r8)	mov.l	r1,@(wakeup_seq+4,r8)	mov.l	@(cond_futex,r8),r0	add	r2, r0	mov.l	r0,@(cond_futex,r8)	/* Wake up one thread.  */	mov	r8, r4	add	#cond_futex, r4	mov.l	@(dep_mutex,r8), r0	cmp/eq	#-1, r0	bt/s	99f	 mov	#FUTEX_WAKE_OP, r5#ifdef __ASSUME_PRIVATE_FUTEX	mov	#(FUTEX_WAKE_OP|FUTEX_PRIVATE_FLAG), r5	extu.b	r5, r5#else	stc	gbr, r1	mov.w	.Lpfoff, r2	add	r2, r1	mov.l	@r1, r5	mov	#FUTEX_WAKE_OP, r0	or	r0, r5#endif99:	mov	#1, r6	mov	#0, r7	mov	r8, r0	add	#cond_lock, r0	mov.l	.Lfutexop, r1	mov	#SYS_futex, r3	extu.b	r3, r3	trapa	#0x14	SYSCALL_INST_PAD	/* For any kind of error, we try again with WAKE.	   The general test also covers running on old kernels.  */	mov	r0, r1	mov	#-12, r2	shad	r2, r1	not	r1, r1	tst	r1, r1	bt	7f6:	mov	#0, r0	lds.l	@r15+, pr	rts	 mov.l	@r15+, r8#ifndef __ASSUME_PRIVATE_FUTEX.Lpfoff:	.word	PRIVATE_FUTEX - TLS_PRE_TCB_SIZE#endif	.align	2.Lfutexop:	.long	FUTEX_OP_CLEAR_WAKE_IF_GT_ONE7:	/* r5 should be either FUTEX_WAKE_OP or	   FUTEX_WAKE_OP|FUTEX_PRIVATE_FLAG from the previous syscall.  */	mov	#(FUTEX_WAKE ^ FUTEX_WAKE_OP), r0	xor	r0, r5	trapa	#0x14	SYSCALL_INST_PAD4:	/* Unlock.  */#if cond_lock != 0	DEC (@(cond_lock,r8), r2)#else	DEC (@r8, r2)#endif	tst	r2, r2	bt	6b5:	/* Unlock in loop requires wakeup.  */	mov	r8, r4#if cond_lock != 0	add	#cond_lock, r4#endif	mov.l	@(dep_mutex,r8), r0	cmp/eq	#-1, r0	bf/s	99f	 mov	#LLL_PRIVATE, r5	mov	#LLL_SHARED, r599:		mov.l	.Lwake4, r1	bsrf	r1	 extu.b	r5, r5.Lwake4b:	bra	6b	 nop1:	/* Initial locking failed.  */	mov	r8, r5#if cond_lock != 0	add	#cond_lock, r5#endif	mov.l	@(dep_mutex,r8), r0	cmp/eq	#-1, r0	bf/s	99f	 mov	#LLL_PRIVATE, r6	mov	#LLL_SHARED, r699:		extu.b	r6, r6	mov.l	.Lwait4, r1	bsrf	r1	 mov	r2, r4.Lwait4b:	bra	2b	 nop	.align	2.Lwait4:	.long	__lll_lock_wait-.Lwait4b.Lwake4:	.long	__lll_unlock_wake-.Lwake4b	.size	__pthread_cond_signal, .-__pthread_cond_signalversioned_symbol (libpthread, __pthread_cond_signal, pthread_cond_signal,		  GLIBC_2_3_2)