compiled newlib, need to hook up the system calls

rocklibc/src/_PDCLIB/_PDCLIB_prepwrite.c

@@ -0,0 +1,39 @@
+/* _PDCLIB_prepwrite( struct _PDCLIB_file_t * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream )
+{
+    if ( ( stream->bufidx < stream->bufend ) || ( stream->ungetidx > 0 ) ||
+         ( stream->status & ( _PDCLIB_FREAD | _PDCLIB_ERRORFLAG | _PDCLIB_WIDESTREAM | _PDCLIB_EOFFLAG ) ) ||
+         !( stream->status & ( _PDCLIB_FWRITE | _PDCLIB_FAPPEND | _PDCLIB_FRW ) ) )
+    {
+        /* Function called on illegal (e.g. input) stream. */
+        *_PDCLIB_errno_func() = _PDCLIB_EBADF;
+        stream->status |= _PDCLIB_ERRORFLAG;
+        return EOF;
+    }
+
+    stream->status |= _PDCLIB_FWRITE | _PDCLIB_BYTESTREAM;
+    return 0;
+}
+
+#endif
+
+#ifdef TEST
+
+#include "_PDCLIB_test.h"
+
+int main( void )
+{
+    /* Testing covered by ftell.c */
+    return TEST_RESULTS;
+}
+
+#endif