V7/usr/src/libc/sys/close.s

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/ C library -- close

/ error =  close(file);

.globl	_close,
.globl	cerror
.close = 6.

_close:
	mov	r5,-(sp)
	mov	sp,r5
	mov	4(r5),r0
	sys	.close
	bec	1f
	jmp	cerror
1:
	clr	r0
	mov	(sp)+,r5
	rts	pc