--- researchv9/sys/boot/stand/prf.c	2018/04/24 17:21:59	1.1.1.1
+++ researchv9/sys/boot/stand/prf.c	2018/04/24 17:31:14	1.1.1.2
@@ -1,6 +1,4 @@
-/*
- * @(#)prf.c 1.1 86/02/03 Copyright (c) 1985 by Sun Microsystems, Inc.
- */
+/*	prf.c	4.3	81/05/05	*/
 
 #include <sys/types.h>
 #include <machine/sunromvec.h>
@@ -37,8 +35,8 @@ prf(fmt, adx)
 	register u_int *adx;
 {
 	register int b, c, i;
-	register char *s;
-	register int any;
+	char *s;
+	int any;
 
 loop:
 	while ((c = *fmt++) != '%') {
@@ -48,6 +46,7 @@ loop:
 	}
 again:
 	c = *fmt++;
+	/* THIS CODE IS VAX DEPENDENT IN HANDLING %l? AND %c */
 	switch (c) {
 
 	case 'l':
@@ -66,7 +65,9 @@ number:
 		break;
 	case 'c':
 		b = *adx;
-		putchar(b);
+		for (i = 24; i >= 0; i -= 8)
+			if (c = (b >> i) & 0x7f)
+				putchar(c);
 		break;
 	case 'b':
 		b = *adx++;
@@ -105,8 +106,7 @@ number:
  * We don't use recursion to avoid deep kernel stacks.
  */
 printn(n, b)
-	register u_long n;
-	register short b;
+	u_long n;
 {
 	char prbuf[11];
 	register char *cp;
@@ -134,3 +134,53 @@ putchar(c)
 
 	(*romp->v_putchar)(c);
 }
+
+getchar()
+{
+	register c;
+
+	while ((c = (*romp->v_mayget)()) == -1)
+		;
+	if (c == '\r')
+		c = '\n';
+	if (c == 0177 || c == '\b') {
+		putchar('\b');
+		putchar(' ');
+		c = '\b';
+	}
+	putchar(c);
+	return (c);
+}
+
+gets(buf)
+	char *buf;
+{
+	register char *lp;
+	register c;
+
+	lp = buf;
+	for (;;) {
+		c = getchar() & 0177;
+	store:
+		switch(c) {
+		case '\n':
+		case '\r':
+			c = '\n';
+			*lp++ = '\0';
+			return;
+		case '\b':
+		case '#':
+			lp--;
+			if (lp < buf)
+				lp = buf;
+			continue;
+		case '@':
+		case 'u'&037:
+			lp = buf;
+			putchar('\n');
+			continue;
+		default:
+			*lp++ = c;
+		}
+	}
+}