dd731d53dc
2003-03-28 Kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/sh/bits/atomic.h (__arch_compare_and_exchange_val_8_acq): Return old value. Make asm output reg constraint earlyclobber. Renamed from... (__arch_compare_and_exchange_8_acq): ... this. (__arch_compare_and_exchange_val_16_acq): Return old value. Make asm output reg constraint earlyclobber. Renamed from... (__arch_compare_and_exchange_16_acq): ... this. (__arch_compare_and_exchange_val_32_acq): Return old value. Make asm output reg constraint earlyclobber. Renamed from... (__arch_compare_and_exchange_32_acq): ... this. (__arch_compare_and_exchange_val_64_acq): Renamed from... (__arch_compare_and_exchange_64_acq): ... this. (atomic_exchange_and_add): Use local variables and __arch_compare_and_exchange_val_64_acq. (atomic_add): Likewise. (atomic_add_negative, atomic_add_zero): Use local variables. * Makefile: Remove libmd5crypt goal.
395 lines
6.6 KiB
ArmAsm
395 lines
6.6 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 <shlib-compat.h>
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#include <lowlevelcond.h>
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#include <pthread-errnos.h>
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#include "lowlevel-atomic.h"
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#define SYS_gettimeofday __NR_gettimeofday
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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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/* int pthread_cond_timedwait (pthread_cond_t *cond, pthread_mutex_t *mutex,
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const struct timespec *abstime) */
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.globl __pthread_cond_timedwait
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.type __pthread_cond_timedwait, @function
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.align 5
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__pthread_cond_timedwait:
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mov.l r12, @-r15
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mov.l r10, @-r15
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mov.l r9, @-r15
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mov.l r8, @-r15
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sts.l pr, @-r15
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add #-64, r15
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mov r4, r8
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mov r5, r9
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mov r6, r10
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/* Get internal lock. */
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mov #1, r3
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#if cond_lock != 0
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XADD (r3, @(cond_lock,r8), r2)
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#else
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XADD (r3, @r8, r2)
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#endif
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tst r2, r2
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bt 2f
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bra 1f
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nop
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2:
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/* Unlock the mutex. */
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mov.l .Lmunlock1, r1
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bsrf r1
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mov r9, r4
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.Lmunlock1b:
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tst r0, r0
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bf 16f
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mov #1, r2
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mov #0, r3
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clrt
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mov.l @(total_seq,r8),r0
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mov.l @(total_seq+4,r8),r1
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addc r2, r0
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addc r3, r1
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mov.l r0,@(total_seq,r8)
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mov.l r1,@(total_seq+4,r8)
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/* Install cancellation handler. */
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#ifdef PIC
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mova .Lgot1, r0
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mov.l .Lgot1, r12
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add r0, r12
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mov.l .Lccleanup1, r5
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add r12, r5
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#else
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mov.l .Lccleanup1, r5
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#endif
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mov r15, r4
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add #36, r4
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mov.l .Lccpush1, r1
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bsrf r1
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mov r15, r6
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.Lccpush1b:
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/* Get and store current wakeup_seq value. */
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mov.l @(wakeup_seq,r8), r0
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mov.l @(wakeup_seq+4,r8), r1
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mov.l r0, @(20,r15)
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mov.l r1, @(24,r15)
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/* Prepare structure passed to cancellation handler. */
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mov.l r9, @r15
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mov.l r8, @(4,r15)
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/* Unlock. */
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8:
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#if cond_lock != 0
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DEC (@(cond_lock,r8), r2)
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#else
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DEC (@r8, r2)
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#endif
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tst r2, r2
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bt 4f
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bra 3f
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nop
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4:
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mov r15, r4
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mov.l .Lenable1, r1
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bsrf r1
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add #8, r4
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.Lenable1b:
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/* Get current time. */
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mov r15, r4
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add #12, r4
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mov #0, r5
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mov #SYS_gettimeofday, r3
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trapa #0x12
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SYSCALL_INST_PAD
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/* Compute relative timeout. */
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mov.l @(16,r15), r0
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mov.w .L1k, r1
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dmulu.l r0, r1 /* Milli seconds to nano seconds. */
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mov.l @r10, r2
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mov.l @(4,r10), r3
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mov.l @(12,r15), r0
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sts macl, r1
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sub r0, r2
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clrt
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subc r1, r3
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bf 12f
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mov.l .L1g, r1
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add r1, r3
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add #-1, r2
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12:
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cmp/pz r2
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bf 13f /* Time is already up. */
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/* Store relative timeout. */
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mov.l r2, @(12,r15)
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mov.l r3, @(16,r15)
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mov r15, r7
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add #12, r7
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mov #FUTEX_WAIT, r5
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mov.l @(20,r15), r6
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mov r8, r4
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add #wakeup_seq, r4
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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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mov.l r0, @(28,r15)
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mov.l .Ldisable1, r1
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bsrf r1
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mov.l @(8,r15), r4
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.Ldisable1b:
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/* Lock. */
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mov #1, r3
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#if cond_lock != 0
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XADD (r3, @(cond_lock,r8), r2)
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#else
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XADD (r3, @r8, r2)
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#endif
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tst r2, r2
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bf 5f
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6:
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mov.l @(woken_seq,r8), r0
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mov.l @(woken_seq+4,r8), r1
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mov.l @(wakeup_seq,r8), r2
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mov.l @(wakeup_seq+4,r8), r3
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mov.l @(24,r15), r5
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cmp/hi r5, r3
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bt 7f
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cmp/hi r3, r5
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bt 15f
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mov.l @(20,r15), r5
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cmp/hs r2, r5
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bt 15f
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7:
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cmp/hi r1, r3
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bt 9f
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cmp/hi r3, r1
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bt 15f
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cmp/hi r0, r2
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bt 9f
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15:
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mov.l @(28,r15),r0
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cmp/eq #-ETIMEDOUT, r0
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bf 8b
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13:
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mov #1, r2
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mov #0, r3
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clrt
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mov.l @(wakeup_seq,r8),r0
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mov.l @(wakeup_seq+4,r8),r1
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addc r2, r0
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addc r3, r1
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mov.l r0,@(wakeup_seq,r8)
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mov.l r1,@(wakeup_seq+4,r8)
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mov #ETIMEDOUT, r0
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bra 14f
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mov.l r0, @(32,r15)
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9:
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mov #0, r0
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mov.l r0, @(32,r15)
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14:
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mov #1, r2
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mov #0, r3
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clrt
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mov.l @(woken_seq,r8),r0
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mov.l @(woken_seq+4,r8),r1
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addc r2, r0
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addc r3, r1
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mov.l r0,@(woken_seq,r8)
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mov.l r1,@(woken_seq+4,r8)
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#if cond_lock != 0
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DEC (@(cond_lock,r8), r2)
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#else
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DEC (@r8, r2)
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#endif
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tst r2, r2
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bf 10f
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11:
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/* Remove cancellation handler. */
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mov r15, r4
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add #36, r4
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mov.l .Lcpop1, r1
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bsrf r1
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mov #0, r5
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.Lcpop1b:
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mov r9, r4
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mov.l .Lmlocki1, r1
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bsrf r1
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mov #0, r5
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.Lmlocki1b:
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/* We return the result of the mutex_lock operation if it failed. */
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tst r0, r0
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bf 18f
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mov.l @(32,r15), r0
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18:
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add #64, r15
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lds.l @r15+, pr
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mov.l @r15+, r8
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mov.l @r15+, r9
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mov.l @r15+, r10
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rts
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mov.l @r15+, r12
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ret
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.L1k:
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.word 1000
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.align 2
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.Lmunlock1:
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.long __pthread_mutex_unlock_internal-.Lmunlock1b
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#ifdef PIC
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.Lgot1:
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.long _GLOBAL_OFFSET_TABLE_
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.Lccleanup1:
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.long __condvar_cleanup@GOTOFF
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#else
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.Lccleanup1:
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.long __condvar_cleanup
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#endif
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.Lccpush1:
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.long __pthread_cleanup_push-.Lccpush1b
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.Lenable1:
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.long __pthread_enable_asynccancel_2-.Lenable1b
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.Ldisable1:
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.long __pthread_disable_asynccancel-.Ldisable1b
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.Lcpop1:
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.long __pthread_cleanup_pop-.Lcpop1b
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.Lmlocki1:
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.long __pthread_mutex_lock_internal-.Lmlocki1b
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.L1g:
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.long 1000000000
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1:
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/* Initial locking failed. */
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mov r8, r5
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#if cond_lock != 0
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add #cond_lock, r5
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#endif
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mov.l .Lmwait2, r1
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bsrf r1
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mov r2, r4
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.Lmwait2b:
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bra 2b
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nop
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3:
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/* Unlock in loop requires waekup. */
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mov r8, r4
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#if cond_lock != 0
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add #cond_lock, r4
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#endif
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mov.l .Lmwake2, r1
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bsrf r1
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nop
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.Lmwake2b:
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bra 4b
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nop
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5:
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/* Locking in loop failed. */
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mov r8, r5
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#if cond_lock != 0
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add #cond_lock, r5
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#endif
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mov.l .Lmwait3, r1
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bsrf r1
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mov r2, r4
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.Lmwait3b:
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bra 6b
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nop
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10:
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/* Unlock after loop requires waekup. */
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mov r8, r4
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#if cond_lock != 0
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add #cond_lock, r4
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#endif
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mov.l .Lmwake3, r1
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bsrf r1
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nop
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.Lmwake3b:
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bra 11b
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nop
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16:
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/* The initial unlocking of the mutex failed. */
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mov.l r0, @(32,r15)
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#if cond_lock != 0
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DEC (@(cond_lock,r8), r2)
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#else
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DEC (@r8, r2)
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#endif
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tst r2, r2
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bf 17f
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mov r8, r4
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#if cond_lock != 0
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add #cond_lock, r4
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#endif
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mov.l .Lmwake4, r1
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bsrf r1
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nop
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.Lmwake4b:
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17:
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bra 18b
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mov.l @(32,r15), r0
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.align 2
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.Lmwait2:
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.long __lll_mutex_lock_wait-.Lmwait2b
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.Lmwake2:
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.long __lll_mutex_unlock_wake-.Lmwake2b
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.Lmwait3:
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.long __lll_mutex_lock_wait-.Lmwait3b
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.Lmwake3:
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.long __lll_mutex_unlock_wake-.Lmwake3b
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.Lmwake4:
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.long __lll_mutex_unlock_wake-.Lmwake4b
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.size __pthread_cond_timedwait, .-__pthread_cond_timedwait
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versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
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GLIBC_2_3_2)
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