Add support for formatting and printing strings

xtldr/efiutil.c

@@ -0,0 +1,41 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/efiutil.c
+ * DESCRIPTION:     EFI utilities
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtbl.h>
+
+
+/**
+ * This routine formats the input string and prints it out to the stdout and serial console.
+ *
+ * @param Format
+ *        The formatted string that is to be written to the output.
+ *
+ * @param ...
+ *        Depending on the format string, this routine might expect a sequence of additional arguments.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ *
+ * @todo Check if GOP is active and use it instead of default conout protocol; duplicate output to serial console.
+ */
+VOID
+BlEfiPrint(IN PUINT16 Format,
+           IN ...)
+{
+    VA_LIST Arguments;
+
+    /* Initialise the va_list */
+    VA_START(Arguments, Format);
+
+    /* Format and print the string to the stdout */
+    BlStringPrint(BlConsolePutChar, Format, Arguments);
+
+    /* Clean up the va_list */
+    VA_END(Arguments);
+}