Create local C library implementation (2/2)

- This change is split into two separate patches in order to
  simplify the history as interpreted by 'git'. The split is
  between the move/rename and addition of new files.
- Remove dependency on toolchain C library headers and functions in
  order to ensure behavioural compatibility between toolchains.
- Use FreeBSD as reference for C library implementation.
- Do not let GCC use default library include paths.
- Remove unused definitions in modified headers and implementations.
- Move C library files to 'lib/stdlib' and 'include/stdlib'.
- Break std.c functions out into separate files.

Change-Id: I3e3d8d992052264d2a02489034ae4c03bf0f5512

1 files changed, 74 insertions, 0 deletions

diff --git a/include/stdlib/stdio.h b/include/stdlib/stdio.h
new file mode 100644
index 00000000..517158a8
--- /dev/null
+++ b/include/stdlib/stdio.h
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS 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.
+ *
+ *	@(#)stdio.h	8.5 (Berkeley) 4/29/95
+ * $FreeBSD$
+ */
+
+/*
+ * Portions copyright (c) 2013, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+
+#ifndef	_STDIO_H_
+#define	_STDIO_H_
+
+#include <sys/cdefs.h>
+#include <sys/_null.h>
+#include <sys/_types.h>
+
+#ifndef _SIZE_T_DECLARED
+typedef	__size_t	size_t;
+#define	_SIZE_T_DECLARED
+#endif
+
+#ifndef _SSIZE_T_DECLARED
+#define	_SSIZE_T_DECLARED
+typedef	__ssize_t	ssize_t;
+#endif
+
+#define	EOF	(-1)
+
+int	 printf(const char * __restrict, ...);
+int	 puts(const char *);
+int	 sprintf(char * __restrict, const char * __restrict, ...);
+int	 vsprintf(char * __restrict, const char * __restrict,
+	   __va_list);
+
+#if __ISO_C_VISIBLE >= 1999
+int	 snprintf(char * __restrict, size_t, const char * __restrict,
+	   ...) __printflike(3, 4);
+int	 vsnprintf(char * __restrict, size_t, const char * __restrict,
+	   __va_list) __printflike(3, 0);
+#endif
+
+#endif /* !_STDIO_H_ */