xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path()
[linux/fpc-iii.git] / arch / metag / lib / ucmpdi2.S
blob6f3347f7daebf63afb08c77e08bf495dba64b8a9
1 ! Copyright (C) 2012 by Imagination Technologies Ltd.
3 ! 64-bit unsigned compare routine.
6         .text
7         .global ___ucmpdi2
8         .type   ___ucmpdi2,function
10 !         low    high
11 ! u64 a  (D0Ar2, D1Ar1)
12 ! u64 b  (D0Ar4, D1Ar3)
13 ___ucmpdi2:
14         ! start at 1 (equal) and conditionally increment or decrement
15         MOV     D0Re0,#1
17         ! high words
18         CMP     D1Ar1,D1Ar3
19         ! or if equal, low words
20         CMPEQ   D0Ar2,D0Ar4
22         ! unsigned compare
23         SUBLO   D0Re0,D0Re0,#1
24         ADDHI   D0Re0,D0Re0,#1
26         MOV     PC,D1RtP
27         .size ___ucmpdi2,.-___ucmpdi2