[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / metag / lib / cmpdi2.S

! Copyright (C) 2012 by Imagination Technologies Ltd.
!
! 64-bit signed compare routine.
!

	.text
	.global ___cmpdi2
	.type   ___cmpdi2,function

!         low    high
! s64 a  (D0Ar2, D1Ar1)
! s64 b  (D0Ar4, D1Ar3)
___cmpdi2:
	! start at 1 (equal) and conditionally increment or decrement
	MOV	D0Re0,#1

	! high words differ?
	CMP	D1Ar1,D1Ar3
	BNE	$Lhigh_differ

	! unsigned compare low words
	CMP	D0Ar2,D0Ar4
	SUBLO	D0Re0,D0Re0,#1
	ADDHI	D0Re0,D0Re0,#1
	MOV	PC,D1RtP

$Lhigh_differ:
	! signed compare high words
	SUBLT	D0Re0,D0Re0,#1
	ADDGT	D0Re0,D0Re0,#1
	MOV	PC,D1RtP
	.size ___cmpdi2,.-___cmpdi2
Commit	Line	Data
086e9dc0 JH	1	! Copyright (C) 2012 by Imagination Technologies Ltd.
	2	!
	3	! 64-bit signed compare routine.
	4	!
	5
	6	.text
	7	.global ___cmpdi2
	8	.type ___cmpdi2,function
	9
	10	! low high
	11	! s64 a (D0Ar2, D1Ar1)
	12	! s64 b (D0Ar4, D1Ar3)
	13	___cmpdi2:
	14	! start at 1 (equal) and conditionally increment or decrement
	15	MOV D0Re0,#1
	16
	17	! high words differ?
	18	CMP D1Ar1,D1Ar3
	19	BNE $Lhigh_differ
	20
	21	! unsigned compare low words
	22	CMP D0Ar2,D0Ar4
	23	SUBLO D0Re0,D0Re0,#1
	24	ADDHI D0Re0,D0Re0,#1
	25	MOV PC,D1RtP
	26
	27	$Lhigh_differ:
	28	! signed compare high words
	29	SUBLT D0Re0,D0Re0,#1
	30	ADDGT D0Re0,D0Re0,#1
	31	MOV PC,D1RtP
	32	.size ___cmpdi2,.-___cmpdi2