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/* __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
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