20 lines
		
	
	
	
		
			194 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			20 lines
		
	
	
	
		
			194 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
| #include "sys.h"
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| .define	_dup
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| .define	_dup2
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| .extern	_errno
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| 
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| _dup2:
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| 	mov	2(sp),r0
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| 	bis	$100,r0
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| 	br	1f
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| 
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| _dup:
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| 	mov	2(sp),r0
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| 1:
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| 	mov	4(sp),r1
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| 	sys	dup
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| 	bcc	1f
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| 	mov	r0,_errno
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| 	mov	$-1,r0
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| 1:
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| 	rts	pc
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