1/*
2 *  linux/arch/arm26/lib/testchangebit.S
3 *
4 *  Copyright (C) 1995-1996 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <linux/linkage.h>
11#include <asm/assembler.h>
12                .text
13
14ENTRY(_test_and_change_bit_be)
15		eor	r0, r0, #0x18		@ big endian byte ordering
16ENTRY(_test_and_change_bit_le)
17		add	r1, r1, r0, lsr #3
18		and	r3, r0, #7
19		mov	r0, #1
20		save_and_disable_irqs ip, r2
21		ldrb	r2, [r1]
22		tst	r2, r0, lsl r3
23		eor	r2, r2, r0, lsl r3
24		strb	r2, [r1]
25		restore_irqs ip
26		moveq	r0, #0
27		RETINSTR(mov,pc,lr)
28