pthread_cond_timedwait.s

glibc 2.9,最新版的C语言库函数

	/* The initial unlocking of the mutex failed.  */
16:
.LSbl3:
	LOCK
#if cond_lock == 0
	subl	$1, (%ebx)
#else
	subl	$1, cond_lock(%ebx)
#endif
	jne	18b

	movl	%eax, %esi
#if cond_lock == 0
	movl	%ebx, %eax
#else
	leal	cond_lock(%ebx), %eax
#endif
#if (LLL_SHARED-LLL_PRIVATE) > 255
	xorl	%ecx, %ecx
#endif
	cmpl	$-1, dep_mutex(%ebx)
	setne	%cl
	subl	$1, %ecx
	andl	$(LLL_SHARED-LLL_PRIVATE), %ecx
#if LLL_PRIVATE != 0
	addl	$LLL_PRIVATE, %ecx
#endif
	call	__lll_unlock_wake

	movl	%esi, %eax
	jmp	18b

#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
	/* clock_gettime not available.  */
.LSbl4:
19:	leal	4(%esp), %ebx
	xorl	%ecx, %ecx
	movl	$__NR_gettimeofday, %eax
	ENTER_KERNEL
	movl	%edx, %ebx

	/* Compute relative timeout.  */
	movl	8(%esp), %eax
	movl	$1000, %edx
	mul	%edx		/* Milli seconds to nano seconds.  */
	movl	(%ebp), %ecx
	movl	4(%ebp), %edx
	subl	4(%esp), %ecx
	subl	%eax, %edx
	jns	20f
	addl	$1000000000, %edx
	subl	$1, %ecx
20:	testl	%ecx, %ecx
	movl	$-ETIMEDOUT, %esi
	js	6b
	jmp	21b
#endif
	.size	__pthread_cond_timedwait, .-__pthread_cond_timedwait
versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
		  GLIBC_2_3_2)


	.type	__condvar_tw_cleanup2, @function
__condvar_tw_cleanup2:
	subl	$cond_futex, %ebx
.LSbl5:
	.size	__condvar_tw_cleanup2, .-__condvar_tw_cleanup2
	.type	__condvar_tw_cleanup, @function
__condvar_tw_cleanup:
	movl	%eax, %esi

	/* Get internal lock.  */
	movl	$1, %edx
	xorl	%eax, %eax
	LOCK
#if cond_lock == 0
	cmpxchgl %edx, (%ebx)
#else
	cmpxchgl %edx, cond_lock(%ebx)
#endif
	jz	1f

#if cond_lock == 0
	movl	%ebx, %edx
#else
	leal	cond_lock(%ebx), %edx
#endif
#if (LLL_SHARED-LLL_PRIVATE) > 255
	xorl	%ecx, %ecx
#endif
	cmpl	$-1, dep_mutex(%ebx)
	setne	%cl
	subl	$1, %ecx
	andl	$(LLL_SHARED-LLL_PRIVATE), %ecx
#if LLL_PRIVATE != 0
	addl	$LLL_PRIVATE, %ecx
#endif
	call	__lll_lock_wait

1:	movl	broadcast_seq(%ebx), %eax
	cmpl	20(%esp), %eax
	jne	3f

	/* We increment the wakeup_seq counter only if it is lower than
	   total_seq.  If this is not the case the thread was woken and
	   then canceled.  In this case we ignore the signal.  */
	movl	total_seq(%ebx), %eax
	movl	total_seq+4(%ebx), %edi
	cmpl	wakeup_seq+4(%ebx), %edi
	jb	6f
	ja	7f
	cmpl	wakeup_seq(%ebx), %eax
	jbe	7f

6:	addl	$1, wakeup_seq(%ebx)
	adcl	$0, wakeup_seq+4(%ebx)
	addl	$1, cond_futex(%ebx)

7:	addl	$1, woken_seq(%ebx)
	adcl	$0, woken_seq+4(%ebx)

3:	subl	$(1 << nwaiters_shift), cond_nwaiters(%ebx)

	/* Wake up a thread which wants to destroy the condvar object.  */
	xorl	%edi, %edi
	movl	total_seq(%ebx), %eax
	andl	total_seq+4(%ebx), %eax
	cmpl	$0xffffffff, %eax
	jne	4f
	movl	cond_nwaiters(%ebx), %eax
	andl	$~((1 << nwaiters_shift) - 1), %eax
	jne	4f

	addl	$cond_nwaiters, %ebx
	movl	$SYS_futex, %eax
#if FUTEX_PRIVATE_FLAG > 255
	xorl	%ecx, %ecx
#endif
	cmpl	$-1, dep_mutex-cond_nwaiters(%ebx)
	sete	%cl
	subl	$1, %ecx
#ifdef __ASSUME_PRIVATE_FUTEX
	andl	$FUTEX_PRIVATE_FLAG, %ecx
#else
	andl	%gs:PRIVATE_FUTEX, %ecx
#endif
	addl	$FUTEX_WAKE, %ecx
	movl	$1, %edx
	ENTER_KERNEL
	subl	$cond_nwaiters, %ebx
	movl	$1, %edi

4:	LOCK
#if cond_lock == 0
	subl	$1, (%ebx)
#else
	subl	$1, cond_lock(%ebx)
#endif
	je	2f

#if cond_lock == 0
	movl	%ebx, %eax
#else
	leal	cond_lock(%ebx), %eax
#endif
#if (LLL_SHARED-LLL_PRIVATE) > 255
	xorl	%ecx, %ecx
#endif
	cmpl	$-1, dep_mutex(%ebx)
	setne	%cl
	subl	$1, %ecx
	andl	$(LLL_SHARED-LLL_PRIVATE), %ecx
#if LLL_PRIVATE != 0
	addl	$LLL_PRIVATE, %ecx
#endif
	call	__lll_unlock_wake

	/* Wake up all waiters to make sure no signal gets lost.  */
2:	testl	%edi, %edi
	jnz	5f
	addl	$cond_futex, %ebx
#if FUTEX_PRIVATE_FLAG > 255
	xorl	%ecx, %ecx
#endif
	cmpl	$-1, dep_mutex-cond_futex(%ebx)
	sete	%cl
	subl	$1, %ecx
#ifdef __ASSUME_PRIVATE_FUTEX
	andl	$FUTEX_PRIVATE_FLAG, %ecx
#else
	andl	%gs:PRIVATE_FUTEX, %ecx
#endif
	addl	$FUTEX_WAKE, %ecx
	movl	$SYS_futex, %eax
	movl	$0x7fffffff, %edx
	ENTER_KERNEL

5:	movl	24+FRAME_SIZE(%esp), %eax
	call	__pthread_mutex_cond_lock

	movl	%esi, (%esp)
.LcallUR:
	call	_Unwind_Resume
	hlt
.LENDCODE:
	.size	__condvar_tw_cleanup, .-__condvar_tw_cleanup


	.section .gcc_except_table,"a",@progbits
.LexceptSTART:
	.byte	0xff				# @LPStart format (omit)
	.byte	0xff				# @TType format (omit)
	.byte	0x0b				# call-site format
						# DW_EH_PE_sdata4
	.uleb128 .Lcstend-.Lcstbegin
.Lcstbegin:
	.long	.LcleanupSTART-.LSTARTCODE
	.long	.Ladd_cond_futex-.LcleanupSTART
	.long	__condvar_tw_cleanup-.LSTARTCODE
	.uleb128  0
	.long	.Ladd_cond_futex-.LSTARTCODE
	.long	.Lsub_cond_futex-.Ladd_cond_futex
	.long	__condvar_tw_cleanup2-.LSTARTCODE
	.uleb128  0
	.long	.Lsub_cond_futex-.LSTARTCODE
	.long	.LcleanupEND-.Lsub_cond_futex
	.long	__condvar_tw_cleanup-.LSTARTCODE
	.uleb128  0
	.long	.LcallUR-.LSTARTCODE
	.long	.LENDCODE-.LcallUR
	.long	0
	.uleb128  0
.Lcstend:


	.section .eh_frame,"a",@progbits
.LSTARTFRAME:
	.long	L(ENDCIE)-L(STARTCIE)		# 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 -4				# Data alignment factor.
	.byte	8				# 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 6				# Augmentation value length.
	.byte	0x0				# Personality: absolute
	.long	__gcc_personality_v0
	.byte	0x0				# LSDA Encoding: absolute
#endif
	.byte 0x0c				# DW_CFA_def_cfa
	.uleb128 4
	.uleb128 4
	.byte	0x88				# DW_CFA_offset, column 0x8
	.uleb128 1
	.align 4
.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
#else
	.long	.LSTARTCODE			# Start address of the code.
#endif
	.long	.LENDCODE-.LSTARTCODE		# Length of the code.
	.uleb128 4				# Augmentation size
#ifdef SHARED
	.long	.LexceptSTART-.
#else
	.long	.LexceptSTART
#endif
	.byte	0x40+.Lpush_ebp-.LSTARTCODE	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 8
	.byte	0x85				# DW_CFA_offset %ebp
	.uleb128 2
	.byte	0x40+ .Lpush_edi-.Lpush_ebp	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 12
	.byte	0x87				# DW_CFA_offset %edi
	.uleb128 3
	.byte	0x40+.Lpush_esi-.Lpush_edi	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 16
	.byte	0x86				# DW_CFA_offset %esi
	.uleb128 4
	.byte	0x40+.Lpush_ebx-.Lpush_esi	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20
	.byte	0x83				# DW_CFA_offset %ebx
	.uleb128 5
	.byte	4				# DW_CFA_advance_loc4
	.4byte	.Lsubl-.Lpush_ebx
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20+FRAME_SIZE
	.byte	4				# DW_CFA_advance_loc4
	.4byte	.Laddl-.Lsubl
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20
	.byte	0x40+.Lpop_ebx-.Laddl		# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 16
	.byte	0xc3				# DW_CFA_restore %ebx
	.byte	0x40+.Lpop_esi-.Lpop_ebx	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 12
	.byte	0xc6				# DW_CFA_restore %esi
	.byte	0x40+.Lpop_edi-.Lpop_esi	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 8
	.byte	0xc7				# DW_CFA_restore %edi
	.byte	0x40+.Lpop_ebp-.Lpop_edi	# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 4
	.byte	0xc5				# DW_CFA_restore %ebp
	.byte	0x40+.LSbl1-.Lpop_edi		# DW_CFA_advance_loc+N
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20
	.byte	4				# DW_CFA_advance_loc4
	.4byte	.LSbl2-.LSbl1
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20+FRAME_SIZE
	.byte	0x85				# DW_CFA_offset %ebp
	.uleb128 2
	.byte	0x87				# DW_CFA_offset %edi
	.uleb128 3
	.byte	0x86				# DW_CFA_offset %esi
	.uleb128 4
	.byte	0x83				# DW_CFA_offset %ebx
	.uleb128 5
	.byte	4				# DW_CFA_advance_loc4
	.4byte	.LSbl3-.LSbl2
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20
	.byte	4				# DW_CFA_advance_loc4
#if defined __NR_clock_gettime && !defined __ASSUME_POSIX_TIMERS
	.4byte	.LSbl4-.LSbl3
#else
	.4byte	.LSbl5-.LSbl3
#endif
	.byte	14				# DW_CFA_def_cfa_offset
	.uleb128 20+FRAME_SIZE
	.align	4
.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 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