diff --git a/include/wine/unicode.h b/include/wine/unicode.h
index f42a94c7e0d..069b5ce2624 100644
--- a/include/wine/unicode.h
+++ b/include/wine/unicode.h
@@ -40,7 +40,7 @@ extern "C" {
 #endif
 
 #ifndef WINE_UNICODE_INLINE
-#define WINE_UNICODE_INLINE static inline
+#define WINE_UNICODE_INLINE static FORCEINLINE
 #endif
 
 /* code page info common to SBCS and DBCS */
@@ -79,11 +79,6 @@ union cptable
     struct dbcs_table dbcs;
 };
 
-extern int sprintfW( WCHAR *str, const WCHAR *format, ... );
-extern int snprintfW( WCHAR *str, size_t len, const WCHAR *format, ... );
-extern int vsprintfW( WCHAR *str, const WCHAR *format, va_list valist );
-extern int vsnprintfW( WCHAR *str, size_t len, const WCHAR *format, va_list valist );
-
 WINE_UNICODE_INLINE WCHAR tolowerW( WCHAR ch )
 {
     extern const WCHAR wine_casemap_lower[];
@@ -401,6 +396,28 @@ WINE_UNICODE_INLINE int atoiW( const WCHAR *str )
     return (int)atolW( str );
 }
 
+NTSYSAPI int __cdecl _vsnwprintf(WCHAR*,size_t,const WCHAR*,__ms_va_list);
+
+static inline int WINAPIV snprintfW( WCHAR *str, size_t len, const WCHAR *format, ...)
+{
+    int retval;
+    __ms_va_list valist;
+    __ms_va_start(valist, format);
+    retval = _vsnwprintf(str, len, format, valist);
+    __ms_va_end(valist);
+    return retval;
+}
+
+static inline int WINAPIV sprintfW( WCHAR *str, const WCHAR *format, ...)
+{
+    int retval;
+    __ms_va_list valist;
+    __ms_va_start(valist, format);
+    retval = _vsnwprintf(str, MAXLONG, format, valist);
+    __ms_va_end(valist);
+    return retval;
+}
+
 #undef WINE_UNICODE_INLINE
 
 #ifdef __cplusplus
diff --git a/libs/port/Makefile.in b/libs/port/Makefile.in
index 7bc67fa3fee..aabcc833ec6 100644
--- a/libs/port/Makefile.in
+++ b/libs/port/Makefile.in
@@ -17,7 +17,6 @@ C_SRCS = \
 	rint.c \
 	spawn.c \
 	statvfs.c \
-	string.c \
 	strnlen.c \
 	symlink.c \
 	usleep.c \
diff --git a/libs/wine/Makefile.in b/libs/wine/Makefile.in
index 65a07895027..74ffc0d5f83 100644
--- a/libs/wine/Makefile.in
+++ b/libs/wine/Makefile.in
@@ -81,6 +81,7 @@ C_SRCS = \
 	mmap.c \
 	port.c \
 	sortkey.c \
+	string.c \
 	utf8.c \
 	wctomb.c
 
diff --git a/libs/wine/port.c b/libs/wine/port.c
index 62d5c2abcdb..8e56ada52aa 100644
--- a/libs/wine/port.c
+++ b/libs/wine/port.c
@@ -27,16 +27,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
-
-#include "wine/unicode.h"
-
-/* functions from libwine_port that are also exported from libwine for backwards compatibility,
- * on platforms that require it */
-const void *libwine_port_functions[] =
-{
-    strtolW,
-    vsnprintfW,
-};
+#include <stdarg.h>
+#include <windef.h>
 
 /* no longer used, for backwards compatibility only */
 struct wine_pthread_functions;
diff --git a/libs/port/string.c b/libs/wine/string.c
similarity index 99%
rename from libs/port/string.c
rename to libs/wine/string.c
index 62b972399bf..d6fb88f8eca 100644
--- a/libs/port/string.c
+++ b/libs/wine/string.c
@@ -18,6 +18,10 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "wine/asm.h"
+
+#ifdef __ASM_OBSOLETE
+
 #include <assert.h>
 #include <errno.h>
 #include <limits.h>
@@ -711,3 +715,5 @@ int sprintfW( WCHAR *str, const WCHAR *format, ...)
     va_end(valist);
     return retval;
 }
+
+#endif /* __ASM_OBSOLETE */