[libc] Change libc stubs to compiler folder.

components/libc/compilers/newlib/sys/dirent.h

@@ -0,0 +1,57 @@
+#ifndef __RTT_DIRENT_H__
+#define __RTT_DIRENT_H__
+
+#include <rtthread.h>
+
+/*
+* dirent.h - format of directory entries
+ * Ref: http://www.opengroup.org/onlinepubs/009695399/basedefs/dirent.h.html
+ */
+
+/* File types */
+#define FT_REGULAR		0	/* regular file */
+#define FT_SOCKET		1	/* socket file  */
+#define FT_DIRECTORY	2	/* directory    */
+#define FT_USER			3	/* user defined */
+
+#define DT_UNKNOWN		0x00
+#define DT_REG			0x01
+#define DT_DIR			0x02
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef HAVE_DIR_STRUCTURE
+typedef struct 
+{
+	int fd;							/* directory file */
+	char buf[512];
+	int num;
+	int cur;
+} DIR;
+#endif
+
+#ifndef HAVE_DIRENT_STRUCTURE
+struct dirent
+{
+	rt_uint8_t  d_type;				/* The type of the file */
+	rt_uint8_t  d_namlen;			/* The length of the not including the terminating null file name */
+	rt_uint16_t d_reclen;			/* length of this record */
+	char d_name[256];				/* The null-terminated file name */
+};
+#endif
+
+int            closedir(DIR *);
+DIR           *opendir(const char *);
+struct dirent *readdir(DIR *);
+int            readdir_r(DIR *, struct dirent *, struct dirent **);
+void           rewinddir(DIR *);
+void           seekdir(DIR *, long int);
+long           telldir(DIR *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

components/libc/compilers/newlib/sys/fcntl.h

@@ -0,0 +1,18 @@
+#ifndef __RTT_FCNTL_H__
+#define __RTT_FCNTL_H__
+
+/* Operation flags */
+#define O_RDONLY        0x0000000
+#define O_WRONLY        0x0000001
+#define O_RDWR          0x0000002
+#define O_ACCMODE       0x0000003
+#define O_CREAT         0x0000100
+#define O_EXCL          0x0000200
+#define O_TRUNC         0x0001000
+#define O_APPEND        0x0002000
+#define O_DIRECTORY     0x0200000
+#define O_BINARY        0x0008000
+
+#include <unistd.h>
+
+#endif

components/libc/compilers/newlib/sys/statfs.h

@@ -0,0 +1,13 @@
+#ifndef __RTT_STATFS_H__
+#define __RTT_STATFS_H__
+
+#include <rtthread.h>
+
+struct statfs
+{
+	rt_size_t f_bsize; 	 /* block size */
+	rt_size_t f_blocks;  /* total data blocks in file system */
+	rt_size_t f_bfree;	 /* free blocks in file system */
+};
+
+#endif