mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
112 lines
2.2 KiB
ArmAsm
112 lines
2.2 KiB
ArmAsm
/* 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)
|