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 +1,50 @@
+/
+/
+
+/ r3 -- comparisons
+
+.globl	lif2
+.globl	lif1
+.globl	rif4
+.globl	iif2
+.globl	iif4
+.globl	rif8
+
+lif2:
+lif1:
+	tst	(sp)+
+	bne	1f
+	mov	(r4),r4
+	jmp	*(r4)+
+1:
+	tst	(r4)+
+	jmp	*(r4)+
+
+rif8:
+	setd
+	tstf	(sp)+
+	cfcc
+	br	2f
+
+iif4:
+rif4:
+	mov	(sp)+,r0
+	mov	(sp)+,r1
+	tst	r0
+	bne	2f
+	tst	r1
+	cln
+	br	2f
+
+iif2:
+	tst	(sp)+
+2:
+	bmi	1f
+	beq	2f
+	tst	(r4)+
+2:
+	tst	(r4)+
+1:
+	mov	(r4),r4
+	jmp	*(r4)+
+