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https://github.com/torvalds/linux
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38 lines
1.2 KiB
ArmAsm
38 lines
1.2 KiB
ArmAsm
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;; Copyright (C) 2010 Texas Instruments Incorporated
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;; Contributed by Mark Salter <msalter@redhat.com>.
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;;
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2 of the License, or
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;; (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; if not, write to the Free Software
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;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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;; uint64_t __c6xabi_llshl(uint64_t val, uint shift)
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#include <linux/linkage.h>
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.text
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ENTRY(__c6xabi_llshl)
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mv .l1x B4,A1
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[!A1] b .s2 B3 ; just return if zero shift
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mvk .s1 32,A0
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sub .d1 A0,A1,A0
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cmplt .l1 0,A0,A2
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[A2] shru .s1 A4,A0,A0
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[!A2] neg .l1 A0,A5
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|| [A2] shl .s1 A5,A1,A5
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[!A2] shl .s1 A4,A5,A5
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|| [A2] or .d1 A5,A0,A5
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|| [!A2] mvk .l1 0,A4
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[A2] shl .s1 A4,A1,A4
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bnop .s2 B3,5
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ENDPROC(__c6xabi_llshl)
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