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/* Copyright (C) 2003-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <shlib-compat.h>
#include <pthread-errnos.h>
#include <lowlevellock.h>
#include "lowlevel-atomic.h"
.text
.globl __new_sem_trywait
.type __new_sem_trywait,@function
.align 5
cfi_startproc
__new_sem_trywait:
mov.l r12, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r12, 0)
mov.l r8, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r8, 0)
sts.l pr, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (pr, 0)
mov r4, r8
mov.l @r8, r0
2:
tst r0, r0
bt 1f
mov r0, r3
mov r0, r4
add #-1, r3
CMPXCHG (r4, @r8, r3, r2)
bf/s 2b
mov r2, r0
cfi_remember_state
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l @r15+, r8
cfi_adjust_cfa_offset (-4)
cfi_restore (r8)
mov.l @r15+, r12
cfi_adjust_cfa_offset (-4)
cfi_restore (r12)
rts
mov #0, r0
cfi_restore_state
1:
mov #EAGAIN, r8
mova .Lgot1, r0
mov.l .Lgot1, r12
add r0, r12
mov.l .Lerrno1, r0
stc gbr, r1
mov.l @(r0, r12), r0
bra .Lexit
add r1, r0
.align 2
.Lerrno1:
.long errno@GOTTPOFF
.Lexit:
mov.l r8, @r0
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l @r15+, r8
cfi_adjust_cfa_offset (-4)
cfi_restore (r8)
mov.l @r15+, r12
cfi_adjust_cfa_offset (-4)
cfi_restore (r12)
rts
mov #-1, r0
cfi_endproc
.align 2
.Lgot1:
.long _GLOBAL_OFFSET_TABLE_
.size __new_sem_trywait,.-__new_sem_trywait
versioned_symbol(libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1)
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