pthread_cond_timedwait.s

glibc 2.9,最新版的C语言库函数

	mov	r8, r5
#if cond_lock != 0
	add	#cond_lock, r5
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r6
	mov	#LLL_SHARED, r6
99:	
	extu.b	r6, r6
	mov.l	.Lwait2, r1
	bsrf	r1
	 mov	r2, r4
.Lwait2b:
	bra	2b
	 nop

3:
	/* Unlock in loop requires wakeup.  */
	mov	r8, r4
#if cond_lock != 0
	add	#cond_lock, r4
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r5
	mov	#LLL_SHARED, r5
99:	
	mov.l	.Lmwait2, r1
	bsrf	r1
	 extu.b	r5, r5
.Lmwait2b:
	bra	4b
	 nop

5:
	/* Locking in loop failed.  */
	mov	r8, r5
#if cond_lock != 0
	add	#cond_lock, r5
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r6
	mov	#LLL_SHARED, r6
99:	
	extu.b	r6, r6
	mov.l	.Lwait3, r1
	bsrf	r1
	 mov	r2, r4
.Lwait3b:
	bra	6b
	 nop

10:
	/* Unlock after loop requires wakeup.  */
	mov	r8, r4
#if cond_lock != 0
	add	#cond_lock, r4
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r5
	mov	#LLL_SHARED, r5
99:	
	mov.l	.Lmwait3, r1
	bsrf	r1
	 extu.b	r5, r5
.Lmwait3b:
	bra	11b
	 nop

16:
	/* The initial unlocking of the mutex failed.  */
	mov.l	r0, @(24,r15)
#if cond_lock != 0
	DEC (@(cond_lock,r8), r2)
#else
	DEC (@r8, r2)
#endif
	tst	r2, r2
	bf	17f

	mov	r8, r4
#if cond_lock != 0
	add	#cond_lock, r4
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r5
	mov	#LLL_SHARED, r5
99:	
	mov.l	.Lmwait4, r1
	bsrf	r1
	 extu.b	r5, r5
.Lmwait4b:
17:
	bra	18b
	 mov.l	@(24,r15), r0

	.align	2
.Lwait2:
	.long	__lll_lock_wait-.Lwait2b
.Lmwait2:
	.long	__lll_unlock_wake-.Lmwait2b
.Lwait3:
	.long	__lll_lock_wait-.Lwait3b
.Lmwait3:
	.long	__lll_unlock_wake-.Lmwait3b
.Lmwait4:
	.long	__lll_unlock_wake-.Lmwait4b
	.size	__pthread_cond_timedwait, .-__pthread_cond_timedwait
versioned_symbol (libpthread, __pthread_cond_timedwait, pthread_cond_timedwait,
		  GLIBC_2_3_2)


	.type	__condvar_tw_cleanup, @function
__condvar_tw_cleanup:
	mov	r4, r11

	/* Get internal lock.  */
	mov	#0, r3
	mov	#1, r4
#if cond_lock != 0
	CMPXCHG (r3, @(cond_lock,r8), r4, r2)
#else
	CMPXCHG (r3, @r8, r4, r2)
#endif
	bt	1f
	 nop

	mov	r8, r5
#if cond_lock != 0
	add	#cond_lock, r5
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r6
	mov	#LLL_SHARED, r6
99:	
	extu.b	r6, r6
	mov.l	.Lwait5, r1
	bsrf	r1
	 mov	r2, r4
.Lwait5b:

1:
	mov.l	@(broadcast_seq,r8), r0
	mov.l	@(4,r15), r1
	cmp/eq	r0, r1
	bf	3f

	mov	#1, r2
	mov	#0, r3

	/* 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.  */
	mov.l	@(total_seq+4,r8), r0
	mov.l	@(wakeup_seq+4,r8), r1
	cmp/hi	r1, r0
	bt/s	6f
	 cmp/hi	r0, r1
	bt	7f
	mov.l	@(total_seq,r8), r0
	mov.l	@(wakeup_seq,r8), r1
	cmp/hs	r0, r1
	bt	7f

6:
	clrt
	mov.l	@(wakeup_seq,r8),r0
	mov.l	@(wakeup_seq+4,r8),r1
	addc	r2, r0
	addc	r3, r1
	mov.l	r0,@(wakeup_seq,r8)
	mov.l	r1,@(wakeup_seq+4,r8)
	mov.l	@(cond_futex,r8),r0
	add	r2, r0
	mov.l	r0,@(cond_futex,r8)

7:
	clrt
	mov.l	@(woken_seq,r8),r0
	mov.l	@(woken_seq+4,r8),r1
	addc	r2, r0
	addc	r3, r1
	mov.l	r0,@(woken_seq,r8)
	mov.l	r1,@(woken_seq+4,r8)

3:
	mov	#(1 << nwaiters_shift), r2
	mov.l	@(cond_nwaiters,r8),r0
	sub	r2, r0
	mov.l	r0,@(cond_nwaiters,r8)

	/* Wake up a thread which wants to destroy the condvar object.  */
	mov	#0, r10
	mov.l	@(total_seq,r8),r0
	mov.l	@(total_seq+4,r8),r1
	and	r1, r0
	not	r0, r0
	cmp/eq	#0, r0
	bf/s	4f
	 mov	#((1 << nwaiters_shift) - 1), r1
	not	r1, r1
	mov.l	@(cond_nwaiters,r8),r0
	tst	r1, r0
	bf	4f

	mov	r8, r4
	add	#cond_nwaiters, r4
	mov	#FUTEX_WAKE, r5
	mov	#1, r6
	mov	#0, r7
	mov	#SYS_futex, r3
	extu.b	r3, r3
	trapa	#0x14
	SYSCALL_INST_PAD
	mov	#1, r10

4:
#if cond_lock != 0
	DEC (@(cond_lock,r8), r2)
#else
	DEC (@r8, r2)
#endif
	tst	r2, r2
	bt	2f

	mov	r8, r4
#if cond_lock != 0
	add	#cond_lock, r4
#endif
	mov.l	@(dep_mutex,r8), r0
	cmp/eq	#-1, r0
	bf/s	99f
	 mov	#LLL_PRIVATE, r5
	mov	#LLL_SHARED, r5
99:	
	mov.l	.Lmwait5, r1
	bsrf	r1
	 extu.b	r5, r5
.Lmwait5b:

2:
	/* Wake up all waiters to make sure no signal gets lost.  */
	tst	r10, r10
	bf/s	5f
	 mov	r8, r4
	add	#cond_futex, r4
	mov	#FUTEX_WAKE, r5
	mov	#-1, r6
	shlr	r6		/* r6 = 0x7fffffff */
	mov	#0, r7
	mov	#SYS_futex, r3
	extu.b	r3, r3
	trapa	#0x14
	SYSCALL_INST_PAD

5:
        mov.l   .Lmlocki5, r1
        bsrf    r1
         mov     r9, r4
.Lmlocki5b:

.LcallUR:
	mov.l	.Lresume, r1
#ifdef PIC
	add	r12, r1
#endif
	jsr	@r1
	 mov	r11, r4
	sleep

	.align	2
.Lwait5:
	.long   __lll_lock_wait-.Lwait5b
.Lmwait5:
        .long   __lll_unlock_wake-.Lmwait5b
.Lmlocki5:
	.long   __pthread_mutex_cond_lock-.Lmlocki5b
.Lresume:
#ifdef PIC
	.long	_Unwind_Resume@GOTOFF
#else
	.long	_Unwind_Resume
#endif
.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:
	.ualong	.LcleanupSTART-.LSTARTCODE
	.ualong	.LcleanupEND-.LcleanupSTART
	.ualong	__condvar_tw_cleanup-.LSTARTCODE
	.uleb128  0
	.ualong	.LcallUR-.LSTARTCODE
	.ualong	.LENDCODE-.LcallUR
	.ualong	0
	.uleb128  0
.Lcstend:

	.section .eh_frame,"a",@progbits
.LSTARTFRAME:
	.ualong	.LENDCIE-.LSTARTCIE		! Length of the CIE.
.LSTARTCIE:
	.ualong	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	0x11				! 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
	.ualong	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
	.ualong	__gcc_personality_v0
	.byte	0x0				! LSDA Encoding: absolute
#endif
	.byte 0x0c				! DW_CFA_def_cfa
	.uleb128 0xf
	.uleb128 0
	.align 2
.LENDCIE:

	.ualong	.LENDFDE-.LSTARTFDE		! Length of the FDE.
.LSTARTFDE:
	.ualong	.LSTARTFDE-.LSTARTFRAME		! CIE pointer.
#ifdef SHARED
	.ualong	.LSTARTCODE-.			! PC-relative start address
						! of the code.
#else
	.ualong	.LSTARTCODE			! Start address of the code.
#endif
	.ualong	.LENDCODE-.LSTARTCODE		! Length of the code.
	.uleb128 4				! Augmentation size
#ifdef SHARED
	.ualong	.LexceptSTART-.
#else
	.ualong	.LexceptSTART
#endif
	.byte	0x4
	.ualong	.Lpush_r8-.LSTARTCODE
	.byte	0xe
	.uleb128 4
	.byte	0x88
	.uleb128 1
	.byte	0x4
	.ualong	.Lpush_r9-.Lpush_r8
	.byte	0xe
	.uleb128 8
	.byte	0x89
	.uleb128 2
	.byte	0x4
	.ualong	.Lpush_r10-.Lpush_r9
	.byte	0xe
	.uleb128 12
	.byte	0x8a
	.uleb128 3
	.byte	0x4
	.ualong	.Lpush_r11-.Lpush_r10
	.byte	0xe
	.uleb128 16
	.byte	0x8b
	.uleb128 4
	.byte	0x4
	.ualong	.Lpush_r12-.Lpush_r11
	.byte	0xe
	.uleb128 20
	.byte	0x8c
	.uleb128 5
	.byte	0x4
	.ualong	.Lpush_r13-.Lpush_r12
	.byte	0xe
	.uleb128 24
	.byte	0x8d
	.uleb128 6
	.byte	0x4
	.ualong	.Lpush_pr-.Lpush_r13
	.byte	0xe
	.uleb128 28
	.byte	0x91
	.uleb128 7
	.byte	0x4
	.ualong	.Lalloc-.Lpush_pr
	.byte	0xe
	.uleb128 92
	.align	2
.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