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| ! Copyright (C) 2012 by Imagination Technologies Ltd.
| !
| ! 64-bit arithmetic shift left routine.
| !
|
| .text
| .global ___ashldi3
| .type ___ashldi3,function
|
| ___ashldi3:
| MOV D0Re0,D0Ar2
| MOV D1Re0,D1Ar1
| CMP D1Ar3,#0 ! COUNT == 0
| MOVEQ PC,D1RtP ! Yes, return
|
| SUBS D0Ar4,D1Ar3,#32 ! N = COUNT - 32
| BGE $L10
|
| !! Shift < 32
| NEG D0Ar4,D0Ar4 ! N = - N
| LSL D1Re0,D1Re0,D1Ar3 ! HI = HI << COUNT
| LSR D0Ar6,D0Re0,D0Ar4 ! TMP= LO >> -(COUNT - 32)
| OR D1Re0,D1Re0,D0Ar6 ! HI = HI | TMP
| SWAP D0Ar4,D1Ar3
| LSL D0Re0,D0Re0,D0Ar4 ! LO = LO << COUNT
| MOV PC,D1RtP
|
| $L10:
| !! Shift >= 32
| LSL D1Re0,D0Re0,D0Ar4 ! HI = LO << N
| MOV D0Re0,#0 ! LO = 0
| MOV PC,D1RtP
| .size ___ashldi3,.-___ashldi3
|
|
