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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 <structsem.h>
#include <lowlevellock.h>
#include "lowlevel-atomic.h"
.text
.globl __new_sem_post
.type __new_sem_post,@function
.align 5
cfi_startproc
__new_sem_post:
mov.l @(VALUE,r4), r2
0:
mov.l .Lmax, r1
cmp/eq r1, r2
bt/s 3f
mov r2, r3
mov r3, r5
add #1, r5
CMPXCHG (r3, @(VALUE,r4), r5, r2)
bf 0b
mov.l @(NWAITERS,r4), r2
tst r2, r2
bt 2f
mov #FUTEX_WAKE, r5
mov.l @(PRIVATE,r4), r1
or r1, r5
mov #1, r6
mov #0, r7
mov #SYS_futex, r3
extu.b r3, r3
trapa #0x14
SYSCALL_INST_PAD
cmp/pz r0
bf 1f
2:
rts
mov #0, r0
1:
bra 4f
mov #EINVAL, r2
3:
mov #EOVERFLOW, r2
4:
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)
mova .Lgot3, r0
mov.l .Lgot3, r12
add r0, r12
mov.l .Lerrno3, r0
stc gbr, r1
mov.l @(r0, r12), r0
bra .Lexit
add r1, r0
.align 2
.Lerrno3:
.long errno@GOTTPOFF
.Lexit:
mov.l r2, @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
.Lmax:
.long SEM_VALUE_MAX
.Lgot3:
.long _GLOBAL_OFFSET_TABLE_
.size __new_sem_post,.-__new_sem_post
versioned_symbol(libpthread, __new_sem_post, sem_post, GLIBC_2_1)
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