| ! SPDX-License-Identifier: GPL-2.0 |
| ! 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 |
