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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
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43
arch/arm64/lib/strrchr.S Normal file
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/*
* Based on arch/arm/lib/strrchr.S
*
* Copyright (C) 1995-2000 Russell King
* Copyright (C) 2013 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
/*
* Find the last occurrence of a character in a string.
*
* Parameters:
* x0 - str
* x1 - c
* Returns:
* x0 - address of last occurrence of 'c' or 0
*/
ENTRY(strrchr)
mov x3, #0
and w1, w1, #0xff
1: ldrb w2, [x0], #1
cbz w2, 2f
cmp w2, w1
b.ne 1b
sub x3, x0, #1
b 1b
2: mov x0, x3
ret
ENDPROC(strrchr)