a54e8d33d1
2003-02-08 kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/sh/Makefile: New file. * sysdeps/sh/bits/atomic.h: New file. * sysdeps/sh/pthread_spin_init.c: New file. * sysdeps/sh/pthread_spin_lock.c: New file. * sysdeps/sh/pthread_spin_trylock.S: New file. * sysdeps/sh/pthread_spin_unlock.S: New file. * sysdeps/sh/pthreaddef.h: New file. * sysdeps/sh/tcb-offsets.sym: New file. * sysdeps/sh/td_ta_map_lwp2thr.c: New file. * sysdeps/sh/tls.h: New file. * sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: New file. * sysdeps/unix/sysv/linux/sh/bits/semaphore.h: New file. * sysdeps/unix/sysv/linux/sh/createthread.c: New file. * sysdeps/unix/sysv/linux/sh/fork.c: New file. * sysdeps/unix/sysv/linux/sh/libc-lowlevellock.S: New file. * sysdeps/unix/sysv/linux/sh/libc-lowlevelmutex.S: New file. * sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h: New file. * sysdeps/unix/sysv/linux/sh/lowlevelcond.h: New file. * sysdeps/unix/sysv/linux/sh/lowlevellock.S: New file. * sysdeps/unix/sysv/linux/sh/lowlevellock.h: New file. * sysdeps/unix/sysv/linux/sh/lowlevelmutex.S: New file. * sysdeps/unix/sysv/linux/sh/lowlevelrwlock.h: New file. * sysdeps/unix/sysv/linux/sh/pt-initfini.c: New file. * sysdeps/unix/sysv/linux/sh/pt-vfork.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_cond_broadcast.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_cond_signal.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_cond_wait.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_once.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S: New file. * sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S: New file. * sysdeps/unix/sysv/linux/sh/sem_post.S: New file. * sysdeps/unix/sysv/linux/sh/sem_timedwait.S: New file. * sysdeps/unix/sysv/linux/sh/sem_trywait.S: New file. * sysdeps/unix/sysv/linux/sh/sem_wait.S: New file. * sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: New file.
129 lines
2.4 KiB
ArmAsm
129 lines
2.4 KiB
ArmAsm
/* Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <lowlevelrwlock.h>
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#include "lowlevel-atomic.h"
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#define SYS_futex 240
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#define FUTEX_WAIT 0
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#define FUTEX_WAKE 1
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.text
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.globl __pthread_rwlock_unlock
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.type __pthread_rwlock_unlock,@function
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.align 5
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__pthread_rwlock_unlock:
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mov.l r12, @-r15
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mov.l r8, @-r15
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sts.l pr, @-r15
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mov r4, r8
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/* Get the lock. */
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mov #1, r3
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#if MUTEX == 0
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XADD (r3, @r4, r2)
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#else
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XADD (r3, @(MUTEX,r4), r2)
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#endif
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tst r2, r2
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bf 1f
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2:
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mov.l @(WRITER,r8), r0
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tst r0, r0
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bf 5f
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mov.l @(NR_READERS,r8), r0
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add #-1, r0
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mov.l r0, @(NR_READERS,r8)
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tst r0, r0
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bf 6f
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5:
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mov #0, r0
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mov.l r0, @(WRITER,r8)
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mov r8, r4
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mov.l @(WRITERS_QUEUED,r8), r0
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tst r0, r0
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bf 9f
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mov #-1, r6
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shlr r6 /* r6 = 0x7fffffff */
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bra 0f
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add #READERS_WAKEUP, r4
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9:
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mov #1, r6
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add #WRITERS_WAKEUP, r4
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0:
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mov #FUTEX_WAKE, r5
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mov #SYS_futex, r3
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extu.b r3, r3
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trapa #0x14
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SYSCALL_INST_PAD
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6:
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#if MUTEX == 0
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DEC (@r8, r2)
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#else
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DEC (@(MUTEX,r8), r2)
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#endif
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tst r2, r2
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bf 3f
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4:
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lds.l @r15+, pr
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mov.l @r15+, r8
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mov.l @r15+, r12
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rts
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mov #0, r0
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1:
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mov r8, r5
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#if MUTEX != 0
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add #MUTEX, r5
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#endif
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mov r2, r4
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mov.l .Lwait8, r1
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bsrf r1
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nop
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.Lwait8b:
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bra 2b
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nop
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3:
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mov r8, r4
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#if MUTEX != 0
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add #MUTEX, r4
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#endif
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mov.l .Lwake8, r1
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bsrf r1
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nop
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.Lwake8b:
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bra 4b
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nop
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.align 2
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.Lwait8:
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.long __lll_mutex_lock_wait-.Lwait8b
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.Lwake8:
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.long __lll_mutex_unlock_wake-.Lwake8b
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.size __pthread_rwlock_unlock,.-__pthread_rwlock_unlock
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.globl pthread_rwlock_unlock
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pthread_rwlock_unlock = __pthread_rwlock_unlock
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.globl __pthread_rwlock_unlock_internal
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__pthread_rwlock_unlock_internal = __pthread_rwlock_unlock
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