1 files changed, 88 insertions, 0 deletions
diff --git a/utility/retarget.c b/utility/retarget.c
new file mode 100644
index 0000000..8f81ba6
--- /dev/null
+++ b/utility/retarget.c
@@ -0,0 +1,88 @@
+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !Purpose
+///
+/// This file Configures the target-dependent low level functions for character I/O.
+///
+/// !Contents
+/// The code implement the lower-level functions as follows:
+///    - fputc
+///    - ferror
+///    - _ttywrch
+///    - _sys_exit
+///
+///
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+//         Headers
+//------------------------------------------------------------------------------
+#include <dbgu/dbgu.h>
+#include <stdio.h>
+
+// Disable semihosting
+#pragma import(__use_no_semihosting_swi) 
+
+struct __FILE { int handle;} ;
+FILE __stdout;
+FILE __stderr;
+
+//------------------------------------------------------------------------------
+///  Outputs a character to a file.
+//------------------------------------------------------------------------------
+int fputc(int ch, FILE *f) {
+    if ((f == stdout) || (f == stderr)) {
+        DBGU_PutChar(ch);
+        return ch;
+    }
+    else {
+        return EOF;
+    }
+}
+
+//------------------------------------------------------------------------------
+///  Returns the error status accumulated during file I/O.
+//------------------------------------------------------------------------------
+int ferror(FILE *f) {
+    return EOF;
+}
+
+
+void _ttywrch(int ch) {
+    DBGU_PutChar((unsigned char)ch);
+}
+
+
+void _sys_exit(int return_code) {
+    label:  goto label;  /* endless loop */
+}