/* Copyright (C) 2003, 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 <lowlevellock.h>#include <lowlevelrwlock.h>#include <pthread-errnos.h>#include <tcb-offsets.h>#include <kernel-features.h>#include "lowlevel-atomic.h"	.text	.globl	__pthread_rwlock_wrlock	.type	__pthread_rwlock_wrlock,@function	.align	5__pthread_rwlock_wrlock:	mov.l	r12, @-r15	mov.l	r9, @-r15	mov.l	r8, @-r15	sts.l	pr, @-r15	mov	r4, r8	/* Get the lock.  */	mov	#0, r3	mov	#1, r4#if MUTEX == 0	CMPXCHG (r3, @r8, r4, r2)#else	CMPXCHG (r3, @(MUTEX,r8), r4, r2)#endif	bf	1f2:	mov.l	@(WRITER,r8), r0	tst	r0, r0	bf	14f	mov.l	@(NR_READERS,r8), r0	tst	r0, r0	bt	5f3:	mov.l	@(WRITERS_QUEUED,r8), r0	add	#1, r0	mov.l	r0, @(WRITERS_QUEUED,r8)	tst	r0, r0	bt	4f	mov.l	@(WRITERS_WAKEUP,r8), r9#if MUTEX == 0	DEC (@r8, r2)#else	DEC (@(MUTEX,r8), r2)#endif	tst	r2, r2	bf	10f11:	mov	r8, r4	add	#WRITERS_WAKEUP, r4#ifdef __ASSUME_PRIVATE_FUTEX	mov	#PSHARED, r0	mov.b	@(r0,r8), r5	mov	#(FUTEX_PRIVATE_FLAG|FUTEX_WAIT), r0	xor	r0, r5	extu.b	r5, r5#else	mov	#PSHARED, r0	mov.b	@(r0,r8), r5	extu.b	r5, r5# if FUTEX_WAIT != 0	mov	#FUTEX_WAIT, r0	or	r0, r5# endif	stc	gbr, r1	mov.w	.Lpfoff, r2	add	r2, r1	mov.l	@r1, r0	xor	r0, r5#endif	mov	r9, r6	mov	#0, r7	mov	#SYS_futex, r3	extu.b	r3, r3	trapa	#0x14	SYSCALL_INST_PAD	/* Reget the lock.  */	mov	#0, r3	mov	#1, r4#if MUTEX == 0	CMPXCHG (r3, @r8, r4, r2)#else	CMPXCHG (r3, @(MUTEX,r8), r4, r2)#endif	bf	12f13:	mov.l	@(WRITERS_QUEUED,r8), r0	add	#-1, r0	bra	2b	 mov.l	r0, @(WRITERS_QUEUED,r8)5:	mov	#0, r3	stc	gbr, r0	mov.w	.Ltidoff, r1	mov.l	@(r0,r1), r0	mov.l	r0, @(WRITER,r8)9:#if MUTEX == 0	DEC (@r8, r2)#else	DEC (@(MUTEX,r8), r2)#endif	tst	r2, r2	bf	6f7:	lds.l	@r15+, pr	mov.l	@r15+, r8	mov.l	@r15+, r9	mov.l	@r15+, r12	rts	 mov	r3, r01:	mov	r8, r5#if MUTEX != 0	add	#MUTEX, r5#endif	mov	#PSHARED, r0	mov.b	@(r0,r8), r6	extu.b	r6, r6	mov.l	.Lwait4, r1	bsrf	r1	 mov	r2, r4.Lwait4b:	bra	2b	 nop14:	stc	gbr, r1	mov.w	.Ltidoff, r2	add	r2, r1	mov.l	@r1, r1	cmp/eq	r1, r0	bf	3b	bra	9b	 mov	#EDEADLK, r36:	mov	r8, r4#if MUTEX != 0	add	#MUTEX, r4#endif	mov	#PSHARED, r0	mov.b	@(r0,r8), r5	extu.b	r5, r5	mov.l	.Lwake4, r1	bsrf	r1	 nop.Lwake4b:	bra	7b	 mov	#0, r3#ifndef __ASSUME_PRIVATE_FUTEX.Lpfoff:	.word	PRIVATE_FUTEX - TLS_PRE_TCB_SIZE#endif.Ltidoff:	.word	TID - TLS_PRE_TCB_SIZE4:	mov.l	@(WRITERS_QUEUED,r8), r1	add	#-1, r1	mov.l	r1, @(WRITERS_QUEUED,r8)	bra	9b	 mov	#EAGAIN, r310:	mov	r8, r4#if MUTEX != 0	add	#MUTEX, r4#endif	mov	#PSHARED, r0	mov.b	@(r0,r8), r5	extu.b	r5, r5	mov.l	.Lwake5, r1	bsrf	r1	 nop.Lwake5b:	bra	11b	 nop12:	mov	r8, r5#if MUTEX != 0	add	#MUTEX, r5#endif	mov	#PSHARED, r0	mov.b	@(r0,r8), r6	extu.b	r6, r6	mov.l	.Lwait5, r1	bsrf	r1	 mov	r2, r4.Lwait5b:	bra	13b	 nop	.align	2.Lwait4:	.long	__lll_lock_wait-.Lwait4b.Lwake4:	.long	__lll_unlock_wake-.Lwake4b.Lwait5:	.long	__lll_lock_wait-.Lwait5b.Lwake5:	.long	__lll_unlock_wake-.Lwake5b	.globl	pthread_rwlock_wrlockpthread_rwlock_wrlock = __pthread_rwlock_wrlock	.globl	__pthread_rwlock_wrlock_internal__pthread_rwlock_wrlock_internal = __pthread_rwlock_wrlock