Add beginning wchar support

EFI uses 16 bit character strings. Add beginning support for this.
Since barebox uses 8 bit strings internally we need conversion functions
to convert between 16 bit and 8 bit strings.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/wchar.h b/include/wchar.h
new file mode 100644
index 0000000000..80dcd81bf4
--- /dev/null
+++ b/include/wchar.h
@@ -0,0 +1,18 @@
+#ifndef __WCHAR_H
+#define __WCHAR_H
+
+#include <linux/types.h>
+
+typedef u16 wchar_t;
+
+char *strcpy_wchar_to_char(char *dst, const wchar_t *src);
+
+wchar_t *strcpy_char_to_wchar(wchar_t *dst, const char *src);
+
+wchar_t *strdup_char_to_wchar(const char *src);
+
+char *strdup_wchar_to_char(const wchar_t *src);
+
+size_t wcslen(const wchar_t *s);
+
+#endif /* __WCHAR_H */