Create a library file for libc

TF Makefile was linking all the objects files generated for the
c library instead of creating a static library that could be
used in the linking stage.

Change-Id: I721daea097e9b13cbb42c9f8eaa2af8fea0799cf
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/lib/libc/sscanf.c b/lib/libc/sscanf.c
new file mode 100644
index 00000000..a5876cff
--- /dev/null
+++ b/lib/libc/sscanf.c
@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdio.h>
+#include <sys/cdefs.h>
+
+/*
+ * TODO: This is not a real implementation of the sscanf() function. It just
+ * returns the number of expected arguments based on the number of '%' found
+ * in the format string.
+ */
+int
+sscanf(const char *__restrict str, char const *__restrict fmt, ...)
+{
+	int ret = 0;
+
+	while (*fmt != '\0') {
+		if (*fmt++ == '%') {
+			ret++;
+		}
+	}
+
+	return ret;
+}