1/* 2 * linux/arch/arm26/lib/setbit.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 14/* 15 * Purpose : Function to set a bit 16 * Prototype: int set_bit(int bit, void *addr) 17 */ 18ENTRY(_set_bit_be) 19 eor r0, r0, #0x18 @ big endian byte ordering 20ENTRY(_set_bit_le) 21 and r2, r0, #7 22 mov r3, #1 23 mov r3, r3, lsl r2 24 save_and_disable_irqs ip, r2 25 ldrb r2, [r1, r0, lsr #3] 26 orr r2, r2, r3 27 strb r2, [r1, r0, lsr #3] 28 restore_irqs ip 29 RETINSTR(mov,pc,lr) 30