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 +1,19 @@
+/ C library -- signed dp add
+
+/ dpadd(l, i)
+/	int l[2];
+/ l =+ i;
+
+.globl	_dpadd
+
+_dpadd:
+	mov	r5,-(sp)
+	mov	sp,r5
+	mov	4(r5),r0
+	tst	6(r5)
+	sxt	r1
+	add	r1,(r0)+
+	add	6(r5),(r0)
+	adc	-(r0)
+	mov	(sp)+,r5
+	rts	pc