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										 |  |  | /* | 
					
						
							|  |  |  |  *  linux/arch/arm/lib/memchr.S | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  Copyright (C) 1995-2000 Russell King | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * This program is free software; you can redistribute it and/or modify
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							|  |  |  |  * it under the terms of the GNU General Public License version 2 as | 
					
						
							|  |  |  |  * published by the Free Software Foundation. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  *  ASM optimised string functions | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | #include <linux/linkage.h> | 
					
						
							|  |  |  | #include <asm/assembler.h> | 
					
						
							|  |  |  | 
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							|  |  |  | 	.text | 
					
						
							|  |  |  | 	.align	5
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							|  |  |  | ENTRY(memchr) | 
					
						
							|  |  |  | 1:	subs	r2, r2, #1 | 
					
						
							|  |  |  | 	bmi	2f | 
					
						
							|  |  |  | 	ldrb	r3, [r0], #1 | 
					
						
							|  |  |  | 	teq	r3, r1 | 
					
						
							|  |  |  | 	bne	1b | 
					
						
							|  |  |  | 	sub	r0, r0, #1 | 
					
						
							|  |  |  | 2:	movne	r0, #0 | 
					
						
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										 |  |  | 	mov	pc, lr | 
					
						
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										 |  |  | ENDPROC(memchr) |