From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/arm/lib/memchr.S | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 arch/arm/lib/memchr.S (limited to 'arch/arm/lib/memchr.S') diff --git a/arch/arm/lib/memchr.S b/arch/arm/lib/memchr.S new file mode 100644 index 000000000..74a5bed6d --- /dev/null +++ b/arch/arm/lib/memchr.S @@ -0,0 +1,26 @@ +/* + * linux/arch/arm/lib/memchr.S + * + * Copyright (C) 1995-2000 Russell King + * + * 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. + * + * ASM optimised string functions + */ +#include +#include + + .text + .align 5 +ENTRY(memchr) +1: subs r2, r2, #1 + bmi 2f + ldrb r3, [r0], #1 + teq r3, r1 + bne 1b + sub r0, r0, #1 +2: movne r0, #0 + ret lr +ENDPROC(memchr) -- cgit v1.2.3-54-g00ecf