42e6c66593
support. * sysdeps/unix/sysv/linux/i386/i486/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/sem_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_post.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/sem_wait.S: Likewise.
341 lines
7.3 KiB
ArmAsm
341 lines
7.3 KiB
ArmAsm
/* Copyright (C) 2002, 2003, 2005, 2007 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <shlib-compat.h>
|
|
#include <pthread-errnos.h>
|
|
#include <structsem.h>
|
|
|
|
#ifndef UP
|
|
# define LOCK lock
|
|
#else
|
|
# define
|
|
#endif
|
|
|
|
#define SYS_futex 202
|
|
#define FUTEX_WAIT 0
|
|
|
|
/* For the calculation see asm/vsyscall.h. */
|
|
#define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000
|
|
|
|
|
|
.text
|
|
|
|
.globl sem_timedwait
|
|
.type sem_timedwait,@function
|
|
.align 16
|
|
sem_timedwait:
|
|
.LSTARTCODE:
|
|
#if VALUE == 0
|
|
movl (%rdi), %eax
|
|
#else
|
|
movl VALUE(%rdi), %eax
|
|
#endif
|
|
2: testl %eax, %eax
|
|
je 1f
|
|
|
|
leaq -1(%rax), %rdx
|
|
LOCK
|
|
#if VALUE == 0
|
|
cmpxchgl %edx, (%rdi)
|
|
#else
|
|
cmpxchgl %edx, VALUE(%rdi)
|
|
#endif
|
|
jne 2b
|
|
|
|
xorl %eax, %eax
|
|
retq
|
|
|
|
/* Check whether the timeout value is valid. */
|
|
1: pushq %r12
|
|
.Lpush_r12:
|
|
pushq %r13
|
|
.Lpush_r13:
|
|
pushq %r14
|
|
.Lpush_r14:
|
|
subq $24, %rsp
|
|
.Lsubq:
|
|
|
|
movq %rdi, %r12
|
|
movq %rsi, %r13
|
|
|
|
/* Check for invalid nanosecond field. */
|
|
cmpq $1000000000, 8(%r13)
|
|
movl $EINVAL, %r14d
|
|
jae 6f
|
|
|
|
LOCK
|
|
addq $1, NWAITERS(%r12)
|
|
|
|
7: xorl %esi, %esi
|
|
movq %rsp, %rdi
|
|
movq $VSYSCALL_ADDR_vgettimeofday, %rax
|
|
callq *%rax
|
|
|
|
/* Compute relative timeout. */
|
|
movq 8(%rsp), %rax
|
|
movl $1000, %edi
|
|
mul %rdi /* Milli seconds to nano seconds. */
|
|
movq (%r13), %rdi
|
|
movq 8(%r13), %rsi
|
|
subq (%rsp), %rdi
|
|
subq %rax, %rsi
|
|
jns 5f
|
|
addq $1000000000, %rsi
|
|
decq %rdi
|
|
5: testq %rdi, %rdi
|
|
movl $ETIMEDOUT, %r14d
|
|
js 6f /* Time is already up. */
|
|
|
|
movq %rdi, (%rsp) /* Store relative timeout. */
|
|
movq %rsi, 8(%rsp)
|
|
|
|
.LcleanupSTART:
|
|
call __pthread_enable_asynccancel
|
|
movl %eax, 16(%rsp)
|
|
|
|
movq %rsp, %r10
|
|
#if VALUE == 0
|
|
movq %r12, %rdi
|
|
#else
|
|
leaq VALUE(%r12), %rdi
|
|
#endif
|
|
#if FUTEX_WAIT == 0
|
|
movl PRIVATE(%rdi), %esi
|
|
#else
|
|
movl $FUTEX_WAIT, %esi
|
|
orl PRIVATE(%rdi), %esi
|
|
#endif
|
|
movl $SYS_futex, %eax
|
|
xorl %edx, %edx
|
|
syscall
|
|
movq %rax, %r14
|
|
|
|
movl 16(%rsp), %edi
|
|
call __pthread_disable_asynccancel
|
|
.LcleanupEND:
|
|
|
|
testq %r14, %r14
|
|
je 9f
|
|
cmpq $-EWOULDBLOCK, %r14
|
|
jne 3f
|
|
|
|
9:
|
|
#if VALUE == 0
|
|
movl (%r12), %eax
|
|
#else
|
|
movl VALUE(%r12), %eax
|
|
#endif
|
|
8: testl %eax, %eax
|
|
je 7b
|
|
|
|
leaq -1(%rax), %rcx
|
|
LOCK
|
|
#if VALUE == 0
|
|
cmpxchgl %ecx, (%r12)
|
|
#else
|
|
cmpxchgl %ecx, VALUE(%r12)
|
|
#endif
|
|
jne 8b
|
|
|
|
xorl %eax, %eax
|
|
|
|
10: LOCK
|
|
subq $1, NWAITERS(%r12)
|
|
|
|
addq $24, %rsp
|
|
.Laddq:
|
|
popq %r14
|
|
.Lpop_r14:
|
|
popq %r13
|
|
.Lpop_r13:
|
|
popq %r12
|
|
.Lpop_r12:
|
|
retq
|
|
|
|
.Lafter_retq:
|
|
3: negq %r14
|
|
6:
|
|
#if USE___THREAD
|
|
movq errno@gottpoff(%rip), %rdx
|
|
movl %r14d, %fs:(%rdx)
|
|
#else
|
|
callq __errno_location@plt
|
|
movl %r14d, (%rax)
|
|
#endif
|
|
|
|
orl $-1, %eax
|
|
jmp 10b
|
|
.size sem_timedwait,.-sem_timedwait
|
|
|
|
|
|
.type sem_timedwait_cleanup,@function
|
|
sem_timedwait_cleanup:
|
|
LOCK
|
|
subq $1, NWAITERS(%r12)
|
|
movq %rax, %rdi
|
|
.LcallUR:
|
|
call _Unwind_Resume@PLT
|
|
hlt
|
|
.LENDCODE:
|
|
.size sem_timedwait_cleanup,.-sem_timedwait_cleanup
|
|
|
|
|
|
.section .gcc_except_table,"a",@progbits
|
|
.LexceptSTART:
|
|
.byte 0xff # @LPStart format (omit)
|
|
.byte 0xff # @TType format (omit)
|
|
.byte 0x01 # call-site format
|
|
# DW_EH_PE_uleb128
|
|
.uleb128 .Lcstend-.Lcstbegin
|
|
.Lcstbegin:
|
|
.uleb128 .LcleanupSTART-.LSTARTCODE
|
|
.uleb128 .LcleanupEND-.LcleanupSTART
|
|
.uleb128 sem_timedwait_cleanup-.LSTARTCODE
|
|
.uleb128 0
|
|
.uleb128 .LcallUR-.LSTARTCODE
|
|
.uleb128 .LENDCODE-.LcallUR
|
|
.uleb128 0
|
|
.uleb128 0
|
|
.Lcstend:
|
|
|
|
|
|
.section .eh_frame,"a",@progbits
|
|
.LSTARTFRAME:
|
|
.long .LENDCIE-.LSTARTCIE # Length of the CIE.
|
|
.LSTARTCIE:
|
|
.long 0 # CIE ID.
|
|
.byte 1 # Version number.
|
|
#ifdef SHARED
|
|
.string "zPLR" # NUL-terminated augmentation
|
|
# string.
|
|
#else
|
|
.string "zPL" # NUL-terminated augmentation
|
|
# string.
|
|
#endif
|
|
.uleb128 1 # Code alignment factor.
|
|
.sleb128 -8 # Data alignment factor.
|
|
.byte 16 # Return address register
|
|
# column.
|
|
#ifdef SHARED
|
|
.uleb128 7 # Augmentation value length.
|
|
.byte 0x9b # Personality: DW_EH_PE_pcrel
|
|
# + DW_EH_PE_sdata4
|
|
# + DW_EH_PE_indirect
|
|
.long DW.ref.__gcc_personality_v0-.
|
|
.byte 0x1b # LSDA Encoding: DW_EH_PE_pcrel
|
|
# + DW_EH_PE_sdata4.
|
|
.byte 0x1b # FDE Encoding: DW_EH_PE_pcrel
|
|
# + DW_EH_PE_sdata4.
|
|
#else
|
|
.uleb128 10 # Augmentation value length.
|
|
.byte 0x0 # Personality: absolute
|
|
.quad __gcc_personality_v0
|
|
.byte 0x0 # LSDA Encoding: absolute
|
|
#endif
|
|
.byte 0x0c # DW_CFA_def_cfa
|
|
.uleb128 7
|
|
.uleb128 8
|
|
.byte 0x90 # DW_CFA_offset, column 0x10
|
|
.uleb128 1
|
|
.align 8
|
|
.LENDCIE:
|
|
|
|
.long .LENDFDE-.LSTARTFDE # Length of the FDE.
|
|
.LSTARTFDE:
|
|
.long .LSTARTFDE-.LSTARTFRAME # CIE pointer.
|
|
#ifdef SHARED
|
|
.long .LSTARTCODE-. # PC-relative start address
|
|
# of the code.
|
|
.long .LENDCODE-.LSTARTCODE # Length of the code.
|
|
.uleb128 4 # Augmentation size
|
|
.long .LexceptSTART-.
|
|
#else
|
|
.quad .LSTARTCODE # Start address of the code.
|
|
.quad .LENDCODE-.LSTARTCODE # Length of the code.
|
|
.uleb128 8 # Augmentation size
|
|
.quad .LexceptSTART
|
|
#endif
|
|
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpush_r12-.LSTARTCODE
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 16
|
|
.byte 0x8c # DW_CFA_offset %r12
|
|
.uleb128 2
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpush_r13-.Lpush_r12
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 24
|
|
.byte 0x8d # DW_CFA_offset %r13
|
|
.uleb128 3
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpush_r14-.Lpush_r13
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 32
|
|
.byte 0x8e # DW_CFA_offset %r14
|
|
.uleb128 4
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lsubq-.Lpush_r14
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 56
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Laddq-.Lsubq
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 32
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpop_r14-.Laddq
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 24
|
|
.byte 0xce # DW_CFA_restore %r14
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpop_r13-.Lpop_r14
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 16
|
|
.byte 0xcd # DW_CFA_restore %r13
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lpop_r12-.Lpop_r13
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 8
|
|
.byte 0xcc # DW_CFA_restore %r12
|
|
.byte 4 # DW_CFA_advance_loc4
|
|
.long .Lafter_retq-.Lpop_r12
|
|
.byte 14 # DW_CFA_def_cfa_offset
|
|
.uleb128 56
|
|
.byte 0x8c # DW_CFA_offset %r12
|
|
.uleb128 2
|
|
.byte 0x8d # DW_CFA_offset %r13
|
|
.uleb128 3
|
|
.byte 0x8e # DW_CFA_offset %r14
|
|
.uleb128 4
|
|
.align 8
|
|
.LENDFDE:
|
|
|
|
|
|
#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 8
|
|
.type DW.ref.__gcc_personality_v0, @object
|
|
.size DW.ref.__gcc_personality_v0, 8
|
|
DW.ref.__gcc_personality_v0:
|
|
.quad __gcc_personality_v0
|
|
#endif
|