1/* __ashldi3.S: 64-bit arithmetic shift left 2 * 3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 9 * 2 of the License, or (at your option) any later version. 10 */ 11 12 .text 13 .p2align 4 14 15############################################################################### 16# 17# unsigned long long __ashldi3(unsigned long long value [GR8:GR9], unsigned by [GR10]) 18# 19############################################################################### 20 .globl __ashldi3 21 .type __ashldi3,@function 22__ashldi3: 23 andicc.p gr10,#63,gr10,icc0 24 setlos #32,gr5 25 andicc.p gr10,#32,gr0,icc1 26 beqlr icc0,#0 27 ckeq icc1,cc4 ; cc4 is true if 0<N<32 28 29 # deal with a shift in the range 1<=N<=31 30 csll.p gr8,gr10,gr8 ,cc4,#1 ; MSW <<= N 31 csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N 32 csrl.p gr9,gr5,gr4 ,cc4,#1 33 csll gr9,gr10,gr9 ,cc4,#1 ; LSW <<= N 34 cor.p gr4,gr8,gr8 ,cc4,#1 ; MSW |= LSW >> M 35 36 # deal with a shift in the range 32<=N<=63 37 csll gr9,gr10,gr8 ,cc4,#0 ; MSW = LSW << (N & 31 [implicit AND]) 38 cor.p gr0,gr0,gr9 ,cc4,#0 ; LSW = 0 39 bralr 40 .size __ashldi3, .-__ashldi3 41