removed pdclib, strange things were happening..., user shell kinda works now

rocklibc/include/unistd.h

@@ -1,28 +1,15 @@
-#ifndef _UNISTD_H
-#define _UNISTD_H
+#ifndef RLIBC_UNISTD_H
+#define RLIBC_UNISTD_H
 
+#include <syscall.h>
 #include <sys/types.h>
 
-/* Standard file descriptors used by streams */
-#define STDIN_FILENO  0   /* Standard input */
-#define STDOUT_FILENO 1   /* Standard output */
-#define STDERR_FILENO 2   /* Standard error output */
+#define STDIN_FILENO  0
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
 
-/* Seek constants for lseek() / _PDCLIB_lseek() */
-#ifndef SEEK_SET
-#define SEEK_SET        0   /* Seek from beginning of file */
-#define SEEK_CUR        1   /* Seek from current position */
-#define SEEK_END        2   /* Seek from end of file */
-#endif
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
 
-/* Null pointer declaration constant */
-#ifndef NULL
-#define NULL ((void *)0)
-#endif
-
-int open(const char *pathname, int flags, ...);
-int read(int fd, void *buf, size_t count);
-int close(int fd);
-
-
-#endif /* _UNISTD_H */
+#endif