1! Copyright (C) 2012 by Imagination Technologies Ltd. 2! 3! 64-bit multiply routine. 4! 5 6! 7! 64-bit signed/unsigned multiply 8! 9! A = D1Ar1:D0Ar2 = a 2^48 + b 2^32 + c 2^16 + d 2^0 10! 11! B = D1Ar3:D0Ar4 = w 2^48 + x 2^32 + y 2^16 + z 2^0 12! 13 .text 14 .global ___muldi3 15 .type ___muldi3,function 16 17___muldi3: 18 MULD D1Re0,D1Ar1,D0Ar4 ! (a 2^48 + b 2^32)(y 2^16 + z 2^0) 19 MULD D0Re0,D0Ar2,D1Ar3 ! (w 2^48 + x 2^32)(c 2^16 + d 2^0) 20 ADD D1Re0,D1Re0,D0Re0 21 22 MULW D0Re0,D0Ar2,D0Ar4 ! (d 2^0) * (z 2^0) 23 24 RTDW D0Ar2,D0Ar2 25 MULW D0Ar6,D0Ar2,D0Ar4 ! (c 2^16)(z 2^0) 26 LSR D1Ar5,D0Ar6,#16 27 LSL D0Ar6,D0Ar6,#16 28 ADDS D0Re0,D0Re0,D0Ar6 29 ADDCS D1Re0,D1Re0,#1 30 RTDW D0Ar4,D0Ar4 31 ADD D1Re0,D1Re0,D1Ar5 32 33 MULW D0Ar6,D0Ar2,D0Ar4 ! (c 2^16)(y 2^16) 34 ADD D1Re0,D1Re0,D0Ar6 35 36 RTDW D0Ar2,D0Ar2 37 MULW D0Ar6,D0Ar2,D0Ar4 ! (d 2^0)(y 2^16) 38 LSR D1Ar5,D0Ar6,#16 39 LSL D0Ar6,D0Ar6,#16 40 ADDS D0Re0,D0Re0,D0Ar6 41 ADD D1Re0,D1Re0,D1Ar5 42 ADDCS D1Re0,D1Re0,#1 43 MOV PC, D1RtP 44 .size ___muldi3,.-___muldi3 45