2 * linux/arch/arm/lib/testsetbit.S
4 * Copyright (C) 1995-1996 Russell King
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.
10 #include <linux/linkage.h>
11 #include <asm/assembler.h>
14 ENTRY(test_and_set_bit)
15 add r1, r1, r0, lsr #3 @ Get byte offset
16 and r3, r0, #7 @ Get bit offset
18 save_and_disable_irqs ip, r2
21 orr r2, r2, r0, lsl r3