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/* Copyright (C) 2003-2012 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 <tcb-offsets.h>
#include <structsem.h>
#include <lowlevellock.h>
#include "lowlevel-atomic.h"
#if VALUE != 0
# error "code needs to be rewritten for VALUE != 0"
#endif
.text
.globl __new_sem_wait
.type __new_sem_wait,@function
.align 5
cfi_startproc
__new_sem_wait:
.LSTARTCODE:
#ifdef SHARED
cfi_personality(DW_EH_PE_pcrel | DW_EH_PE_sdata4 | DW_EH_PE_indirect,
DW.ref.__gcc_personality_v0)
cfi_lsda(DW_EH_PE_pcrel | DW_EH_PE_sdata4, .LexceptSTART)
#else
cfi_personality(DW_EH_PE_absptr, __gcc_personality_v0)
cfi_lsda(DW_EH_PE_absptr, .LexceptSTART)
#endif
mov.l r8, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r8, 0)
mov.l r10, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r10, 0)
mov.l r12, @-r15
cfi_adjust_cfa_offset (4)
cfi_rel_offset (r12, 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
7:
mov #0, r0
9:
cfi_remember_state
lds.l @r15+, pr
cfi_adjust_cfa_offset (-4)
cfi_restore (pr)
mov.l @r15+, r12
cfi_adjust_cfa_offset (-4)
cfi_restore (r12)
mov.l @r15+, r10
cfi_adjust_cfa_offset (-4)
cfi_restore (r10)
rts
mov.l @r15+, r8
/* Omit CFI for restore in delay slot. */
cfi_restore_state
.Lafter_ret:
1:
INC (@(NWAITERS,r8),r2)
.LcleanupSTART:
6:
mov.l .Lenable0, r1
bsrf r1
nop
.Lenable0b:
mov r0, r10
mov r8, r4
#if FUTEX_WAIT == 0
mov.l @(PRIVATE,r8), r5
#else
mov.l @(PRIVATE,r8), r5
mov #FUTEX_WAIT, r0
or r0, r5
#endif
mov #0, r6
mov #0, r7
mov #SYS_futex, r3
extu.b r3, r3
trapa #0x14
SYSCALL_INST_PAD
mov.l .Ldisable0, r1
mov r10, r4
bsrf r1
mov r0, r10
.Ldisable0b:
mov r10, r0
.LcleanupEND:
tst r0, r0
bt 3f
cmp/eq #-EWOULDBLOCK, r0
bf 4f
3:
mov.l @r8, r0
5:
tst r0, r0
bt 6b
mov r0, r3
mov r0, r4
add #-1, r3
CMPXCHG (r4, @r8, r3, r2)
bf/s 5b
mov r2, r0
DEC (@(NWAITERS,r8), r2)
bra 7b
nop
4:
neg r0, r0
mov r0, r4
DEC (@(NWAITERS,r8), r2)
mov r4, r8
mova .Lgot0, r0
mov.l .Lgot0, r12
add r0, r12
mov.l .Lerrno0, r0
stc gbr, r1
mov.l @(r0, r12), r0
bra .Lexit
add r1, r0
.align 2
.Lerrno0:
.long errno@GOTTPOFF
.Lexit:
mov.l r8, @r0
bra 9b
mov #-1, r0
.align 2
.Lgot0:
.long _GLOBAL_OFFSET_TABLE_
.Lenable0:
.long __pthread_enable_asynccancel-.Lenable0b
.Ldisable0:
.long __pthread_disable_asynccancel-.Ldisable0b
.size __new_sem_wait,.-__new_sem_wait
versioned_symbol(libpthread, __new_sem_wait, sem_wait, GLIBC_2_1)
.type sem_wait_cleanup,@function
sem_wait_cleanup:
DEC (@(NWAITERS,r8), r2)
.LcallUR:
mov.l .Lresume, r1
#ifdef PIC
add r12, r1
#endif
jsr @r1
nop
sleep
.align 2
.Lresume:
#ifdef PIC
.long _Unwind_Resume@GOTOFF
#else
.long _Unwind_Resume
#endif
.LENDCODE:
cfi_endproc
.size sem_wait_cleanup,.-sem_wait_cleanup
.section .gcc_except_table,"a",@progbits
.LexceptSTART:
.byte DW_EH_PE_omit ! @LPStart format (omit)
.byte DW_EH_PE_omit ! @TType format (omit)
.byte DW_EH_PE_uleb128 ! call-site format
.uleb128 .Lcstend-.Lcstbegin
.Lcstbegin:
.uleb128 .LcleanupSTART-.LSTARTCODE
.uleb128 .LcleanupEND-.LcleanupSTART
.uleb128 sem_wait_cleanup-.LSTARTCODE
.uleb128 0
.uleb128 .LcallUR-.LSTARTCODE
.uleb128 .LENDCODE-.LcallUR
.uleb128 0
.uleb128 0
.Lcstend:
#ifdef SHARED
.hidden DW.ref.__gcc_personality_v0
.weak DW.ref.__gcc_personality_v0
.section .gnu.linkonce.d.DW.ref.__gcc_personality_v0,"aw",@progbits
.align 4
.type DW.ref.__gcc_personality_v0, @object
.size DW.ref.__gcc_personality_v0, 4
DW.ref.__gcc_personality_v0:
.long __gcc_personality_v0
#endif
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