[libc] Add stat definitions for WIN32.

include/libc/libc_stat.h

@@ -3,9 +3,38 @@
 
 #include <rtconfig.h>
 
-#ifdef RT_USING_NEWLIB
+#if defined(RT_USING_NEWLIB)
 /* use header file of newlib */
 #include <sys/stat.h>
+
+#elif defined(_WIN32)
+#include <sys/stat.h>
+
+#define S_IRWXU              00700
+#define S_IRUSR              00400
+#define S_IWUSR              00200
+#define S_IXUSR              00100
+
+#define S_IRWXG              00070
+#define S_IRGRP              00040
+#define S_IWGRP              00020
+#define S_IXGRP              00010
+
+#define S_IRWXO              00007
+#define S_IROTH              00004
+#define S_IWOTH              00002
+#define S_IXOTH              00001
+
+#define S_IFSOCK             0140000
+#define S_IFLNK              0120000
+#define S_IFBLK              0060000
+#define S_IFIFO              0010000
+#define S_ISUID              0004000
+#define S_ISGID              0002000
+#define S_ISVTX              0001000
+
+#define S_ISDIR(m)           (((m) & S_IFMT) == S_IFDIR)
+
 #else
 #define S_IFMT               00170000
 #define S_IFSOCK             0140000