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-/* __lshrdi3.S: 64-bit logical shift right
- *
- * 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 __lshrdi3(unsigned long long value [GR8:GR9], unsigned by [GR10])
-#
-###############################################################################
- .globl __lshrdi3
- .type __lshrdi3,@function
-__lshrdi3:
- 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
- csrl.p gr9,gr10,gr9 ,cc4,#1 ; LSW >>= N
- csub gr5,gr10,gr5 ,cc4,#1 ; M = 32 - N
- csll.p gr8,gr5,gr4 ,cc4,#1
- csrl gr8,gr10,gr8 ,cc4,#1 ; MSW >>= N
- cor.p gr4,gr9,gr9 ,cc4,#1 ; LSW |= MSW << M
-
- # deal with a shift in the range 32<=N<=63
- csrl gr8,gr10,gr9 ,cc4,#0 ; LSW = MSW >> (N & 31 [implicit AND])
- cor.p gr0,gr0,gr8 ,cc4,#0 ; MSW = 0
- bralr
- .size __lshrdi3, .-__lshrdi3
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