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/*
 *  linux/arch/arm/lib/testclearbit.S
 *
 *  Copyright (C) 1995-1996 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.
 */
#include <linux/linkage.h>
#include <asm/assembler.h>
                .text

ENTRY(test_and_clear_bit)
                add     r1, r1, r0, lsr #3      @ Get byte offset
                and     r3, r0, #7              @ Get bit offset
                mov     r0, #1
                save_and_disable_irqs ip, r2
                ldrb    r2, [r1]
                tst     r2, r0, lsl r3
                bic     r2, r2, r0, lsl r3
                strb    r2, [r1]
                restore_irqs ip
                moveq   r0, #0
                RETINSTR(mov,pc,lr)