24 lines
		
	
	
	
		
			335 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			24 lines
		
	
	
	
		
			335 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
| .sect .text; .sect .rom; .sect .data; .sect .bss
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| .sect .text
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| .define	_vfork
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| vfork = 66
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| 
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| .align	1
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| _vfork:
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| 	.data2	0x0000
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| 	movl	16(fp),r2
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| 	movab	1f,16(fp)	! dirty. Only one process can do return,
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| 				! so do it before forking
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| 	ret
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| 1:
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| 	chmk	$vfork
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| 	bcs	3f
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| 	tstl	r1
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| 	beql	1f
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| 	clrl	r0
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| 1:
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| 	jmp	(r2)
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| 3:
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| 	movl	r0,_errno
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| 	mnegl	$1,r0
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| 	jmp	(r2)
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