diff options
Diffstat (limited to 'kernel/arch/arm/lib/strchr.S')
| -rw-r--r-- | kernel/arch/arm/lib/strchr.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/arch/arm/lib/strchr.S b/kernel/arch/arm/lib/strchr.S new file mode 100644 index 000000000..013d64c71 --- /dev/null +++ b/kernel/arch/arm/lib/strchr.S @@ -0,0 +1,27 @@ +/* + * linux/arch/arm/lib/strchr.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 <linux/linkage.h> +#include <asm/assembler.h> + + .text + .align 5 +ENTRY(strchr) + and r1, r1, #0xff +1: ldrb r2, [r0], #1 + teq r2, r1 + teqne r2, #0 + bne 1b + teq r2, r1 + movne r0, #0 + subeq r0, r0, #1 + ret lr +ENDPROC(strchr) |