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From: Marius Strobl <marius@FreeBSD.org>
Date: Fri, 27 Jan 2012 22:29:29 +0000 (UTC)
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Subject: svn commit: r230631 - head/sys/dev/ofw
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Author: marius
Date: Fri Jan 27 22:29:29 2012
New Revision: 230631
URL: http://svn.freebsd.org/changeset/base/230631

Log:
  Implement OF_printf() using kvprintf() directly, avoiding to use a
  buffer and allowing to handle newlines properly

Modified:
  head/sys/dev/ofw/openfirm.c

Modified: head/sys/dev/ofw/openfirm.c
==============================================================================
--- head/sys/dev/ofw/openfirm.c	Fri Jan 27 22:25:46 2012	(r230630)
+++ head/sys/dev/ofw/openfirm.c	Fri Jan 27 22:29:29 2012	(r230631)
@@ -72,6 +72,8 @@ __FBSDID("$FreeBSD$");
 
 #include "ofw_if.h"
 
+static void OF_putchar(int c, void *arg);
+
 MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
 
 static ihandle_t stdout;
@@ -82,7 +84,7 @@ static struct ofw_kobj	ofw_kernel_obj;
 static struct kobj_ops	ofw_kernel_kops;
 
 /*
- * OFW install routines. Highest priority wins, equal priority also
+ * OFW install routines.  Highest priority wins, equal priority also
  * overrides allowing last-set to win.
  */
 SET_DECLARE(ofw_set, ofw_def_t);
@@ -138,15 +140,27 @@ OF_init(void *cookie)
 	return (rv);
 }
 
+static void
+OF_putchar(int c, void *arg __unused)
+{
+	char cbuf;
+
+	if (c == '\n') {
+		cbuf = '\r';
+		OF_write(stdout, &cbuf, 1);
+	}
+
+	cbuf = c;
+	OF_write(stdout, &cbuf, 1);
+}
+
 void
 OF_printf(const char *fmt, ...)
 {
 	va_list	va;
-	char buf[1024];
 
 	va_start(va, fmt);
-	vsprintf(buf, fmt, va);
-	OF_write(stdout, buf, strlen(buf));
+	(void)kvprintf(fmt, OF_putchar, NULL, 10, va);
 	va_end(va);
 }