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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
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