21 lines
		
	
	
		
			286 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			21 lines
		
	
	
		
			286 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
.sect .text; .sect .rom; .sect .data; .sect .bss
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.define	.and
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	! #bytes in ecx
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	! save edi; it might be a register variable
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	.sect .text
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.and:
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	pop	ebx		! return address
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	mov	edx,edi
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	mov	edi,esp
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	add	edi,ecx
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	sar	ecx,2
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1:
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	pop	eax
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	and	eax,(edi)
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	stos
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	loop	1b
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	mov	edi,edx
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	jmp	ebx
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