1 files changed, 52 insertions, 0 deletions

diff --git a/libexec/rtld-elf/debug.c b/libexec/rtld-elf/debug.c
new file mode 100644
index 000000000000..dc31382b9a37
--- /dev/null
+++ b/libexec/rtld-elf/debug.c
@@ -0,0 +1,52 @@
+/*-
+ * Copyright 1996-1998 John D. Polstra.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *      $Id: debug.c,v 1.1 1998/03/05 21:05:48 jdp Exp $
+ */
+
+/*
+ * Support for printing debugging messages.
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "debug.h"
+
+int debug = 0;
+
+void
+debug_printf(const char *format, ...)
+{
+    if (debug) {
+	va_list ap;
+	va_start(ap, format);
+
+	fflush(stdout);
+	vfprintf(stderr, format, ap);
+	putc('\n', stderr);
+
+	va_end(ap);
+    }
+}