/* __ashldi3.S: 64-bit arithmetic shift left * * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ .text .p2align 4 ############################################################################### # # unsigned long long __ashldi3(unsigned long long value [GR8:GR9], unsigned by [GR10]) # ############################################################################### .globl __ashldi3 .type __ashldi3,@function __ashldi3: andicc.p gr10,#63,gr10,icc0 setlos #32,gr5 andicc.p gr10,#32,gr0,icc1 beqlr icc0,#0 ckeq icc1,cc4 ; cc4 is true if 0<N<32 # deal with a shift in the range 1<=N<=31 csll.p gr8,gr10,gr8 ,cc4,#1 ; MSW <<= N csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N csrl.p gr9,gr5,gr4 ,cc4,#1 csll gr9,gr10,gr9 ,cc4,#1 ; LSW <<= N cor.p gr4,gr8,gr8 ,cc4,#1 ; MSW |= LSW >> M # deal with a shift in the range 32<=N<=63 csll gr9,gr10,gr8 ,cc4,#0 ; MSW = LSW << (N & 31 [implicit AND]) cor.p gr0,gr0,gr9 ,cc4,#0 ; LSW = 0 bralr .size __ashldi3, .-__ashldi3