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,#0 ! COUNT == 0 14 MOVEQ PC,D1RtP ! Yes, return 15 16 MOV D0Ar4,D1Ar3 17 SUBS D1Ar3,D1Ar3,#32 ! N = COUNT - 32 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,#0 ! HI = 0 32 MOV PC,D1RtP 33 .size ___lshrdi3,.-___lshrdi3 34