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 +1,22 @@
+/ C register save and restore -- version 12/74
+
+.globl	csv
+.globl	cret
+
+csv:
+	mov	r5,r0
+	mov	sp,r5
+	mov	r4,-(sp)
+	mov	r3,-(sp)
+	mov	r2,-(sp)
+	tst	-(sp)
+	jmp	(r0)
+
+cret:
+	mov	r5,r1
+	mov	-(r1),r4
+	mov	-(r1),r3
+	mov	-(r1),r2
+	mov	r5,sp
+	mov	(sp)+,r5
+	rts	pc