Adding forgotten jerry-libc.c for linux and stm32f4 targets.

src/libruntime/target/stm32f4/jerry-libc.c

@@ -0,0 +1,62 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Jerry libc platform-specific functions stm32f4 implementation
+ */
+
+#include "jerry-libc.h"
+
+#include <stdarg.h>
+
+extern void __noreturn exit(int status);
+
+/**
+ * printf
+ * 
+ * @return number of characters printed
+ */
+int
+__printf(const char *format, /**< format string */
+         ...)                /**< parameters' values */
+{
+    va_list args;
+    
+    va_start( args, format);
+    
+    int ret = vprintf( format, args);
+            
+    va_end( args);
+    
+    return ret;
+} /* __printf */
+
+/** Output of character. Writes the character c, cast to an unsigned char, to stdout.  */
+int
+__putchar (int c)
+{
+  return __printf ("%c", c);
+} /* __putchar */
+
+/** exit - cause normal process termination  */
+void __noreturn
+__exit (int status)
+{
+  /**
+   * TODO: Blink LEDs? status -> binary -> LEDs?
+   */
+
+  while(true);
+} /* __exit */