/* *  linux/arch/arm/lib/delay.S * *  Copyright (C) 1995-2003 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>#include <asm/delay.h>		.text/* * See linux/include/asm-arm/delay.h for a description of the maths. */#if NDELAY_FACTOR > 255#error NDELAY_FACTOR out of range#endif#if UDELAY_FACTOR > 65535#error UDELAY_FACTOR out of range#endifLC0:		.word	SYMBOL_NAME(loops_per_jiffy)ENTRY(__const_delay)		ldr	r3, LC0		mov	r1, r0, lsr #11		ldr	r2, [r3, #0]		b	2fENTRY(__ndelay)		mov	r2, #NDELAY_FACTOR		b	1fENTRY(__udelay)		mov	r2,     #UDELAY_FACTOR & 0xff00		orr	r2, r2, #UDELAY_FACTOR & 0x00ff1:		ldr	r3, LC0		mul	r1, r0, r2		ldr	r2, [r3, #0]		mov	r1, r1, lsr #112:		mov	r2, r2, lsr #12		mul	r0, r1, r2		movs	r0, r0, lsr #5		RETINSTR(moveq,pc,lr)/* * loops = (r0 * 0x10c6 * HZ * loops_per_jiffy) / 2^32 * * Oh, if only we had a cycle counter... */ENTRY(__delay)		subs	r0, r0, #1		bcs	SYMBOL_NAME(__delay)		RETINSTR(mov,pc,lr)