re-order console output functions, add proper prototypes,

drop claim that our files were blatantly copied, because they have been
rewritten a very long time ago.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4837 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 37 insertions, 21 deletions

diff --git a/src/console/vsprintf.c b/src/console/vsprintf.c
index bfa6ffebab99..9507e8ea540b 100644
--- a/src/console/vsprintf.c
+++ b/src/console/vsprintf.c
@@ -1,45 +1,61 @@
 /*
- *  linux/lib/vsprintf.c
+ * This file is part of the coreboot project.
+ * 
+ * Copyright (C) 2009 coresystems GmbH
  *
- *  Copyright (C) 1991, 1992  Linus Torvalds
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ * MA 02110-1301 USA
  */
 
-/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
-/*
- * Wirzenius wrote this portably, Torvalds fucked it up :-)
- */
 #include <stdarg.h>
-#include <string.h>
+#include <smp/spinlock.h>
+#include <console/vtxprintf.h>
 
-int vtxprintf(void (*tx_byte)(unsigned char byte), const char *fmt, va_list args);
+static spinlock_t vsprintf_lock = SPIN_LOCK_UNLOCKED;
 
-int vsprintf(char * buf, const char *fmt, va_list args)
-{
-	char *str_buf;
+static char *str_buf;
 
-	/* this function is only used by vsprintf.
-	   To keep str_buf local (for reentrancy
-	   and to avoid .bss use, nest it */
-	void str_tx_byte(unsigned char byte)
-	{
-		*str_buf = byte;
-		str_buf++;
-	}
+static void str_tx_byte(unsigned char byte)
+{
+	*str_buf = byte;
+	str_buf++;
+}
 
+static int vsprintf(char *buf, const char *fmt, va_list args)
+{
 	int i;
+
+	spin_lock(&vsprintf_lock);
+
 	str_buf = buf;
 	i = vtxprintf(str_tx_byte, fmt, args);
 	*str_buf = '\0';
+
+	spin_unlock(&vsprintf_lock);
+
 	return i;
 }
 
-int sprintf(char * buf, const char *fmt, ...)
+int sprintf(char *buf, const char *fmt, ...)
 {
 	va_list args;
 	int i;
 
 	va_start(args, fmt);
-	i=vsprintf(buf,fmt,args);
+	i = vsprintf(buf, fmt, args);
 	va_end(args);
+
 	return i;
 }