1! Copyright (C) 2012 by Imagination Technologies Ltd.
2!
3! 64-bit logical shift right routine.
4!
5
6 .text
7 .global ___lshrdi3
8 .type ___lshrdi3,function
9
10___lshrdi3:
11 MOV D0Re0,D0Ar2
12 MOV D1Re0,D1Ar1
13 CMP D1Ar3,
14 MOVEQ PC,D1RtP ! Yes, return
15
16 MOV D0Ar4,D1Ar3
17 SUBS D1Ar3,D1Ar3,
18 BGE $L30
19
20!! Shift < 32
21 NEG D1Ar3,D1Ar3 ! N = - N
22 LSR D0Re0,D0Re0,D0Ar4 ! LO = LO >> COUNT
23 LSL D0Ar6,D1Re0,D1Ar3 ! TMP= HI << -(COUNT - 32)
24 OR D0Re0,D0Re0,D0Ar6 ! LO = LO | TMP
25 SWAP D1Ar3,D0Ar4
26 LSR D1Re0,D1Re0,D1Ar3 ! HI = HI >> COUNT
27 MOV PC,D1RtP
28$L30:
29!! Shift >= 32
30 LSR D0Re0,D1Re0,D1Ar3 ! LO = HI >> N
31 MOV D1Re0,
32 MOV PC,D1RtP
33 .size ___lshrdi3,.-___lshrdi3
34