Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,55 @@
+/ C library -- putchar
+
+	.globl	_putchar,_flush
+	.globl	_fout
+
+_putchar:
+	mov	r5,-(sp)
+	mov	sp,r5
+	mov	_fout+4,r0
+	bne	1f
+	jsr	pc,fl
+	mov	_fout+4,r0
+1:
+	movb	4(r5),(r0)+
+	beq	1f
+	inc	_fout+4
+	dec	_fout+2
+	bgt	1f
+	jsr	pc,fl
+1:
+	mov	4(r5),r0
+	mov	(sp)+,r5
+	rts	pc
+
+_flush:
+	mov	r5,-(sp)
+	mov	sp,r5
+	jsr	pc,fl
+	mov	(sp)+,r5
+	rts	pc
+
+fl:
+	mov	_fout+4,r0
+	beq	1f
+	sub	$_fout+6,r0
+	mov	r0,0f
+	mov	_fout,r0
+	bne	2f
+	inc	r0
+2:
+	sys	0; 9f
+.data
+9:	sys	write; _fout+6; 0:..
+.text
+1:
+	mov	$_fout+6,_fout+4
+	mov	$512.,_fout+2
+	cmp	_fout,$2
+	bhi	1f
+	mov	$1,_fout+2
+1:
+	rts	pc
+
+.bss
+_fout:	.=.+518.