stdlib: add missing features to build PolarSSL

This patch adds the missing features to the C library included
in the Trusted Firmware to build PolarSSL:

  - strcasecmp() function
  - exit() function
  - sscanf()* function
  - time.h header file (and its dependencies)

* NOTE: the sscanf() function is not a real implementation. It just
returns the number of expected arguments by counting the number of
'%' characters present in the formar string. This return value is
good enough for PolarSSL because during the certificate parsing
only the return value is checked. The certificate validity period
is ignored.

Change-Id: I43bb3742f26f0bd458272fccc3d72a7f2176ab3d

1 files changed, 52 insertions, 0 deletions

diff --git a/include/stdlib/inttypes.h b/include/stdlib/inttypes.h
new file mode 100644
index 00000000..269f3e7c
--- /dev/null
+++ b/include/stdlib/inttypes.h
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 2001 Mike Barcroft <mike@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _INTTYPES_H_
+#define	_INTTYPES_H_
+
+#include <machine/_inttypes.h>
+#include <sys/stdint.h>
+
+typedef struct {
+	intmax_t	quot;		/* Quotient. */
+	intmax_t	rem;		/* Remainder. */
+} imaxdiv_t;
+
+__BEGIN_DECLS
+#ifdef _XLOCALE_H_
+#include <xlocale/_inttypes.h>
+#endif
+intmax_t	imaxabs(intmax_t) __pure2;
+imaxdiv_t	imaxdiv(intmax_t, intmax_t) __pure2;
+
+intmax_t	strtoimax(const char *__restrict, char **__restrict, int);
+uintmax_t	strtoumax(const char *__restrict, char **__restrict, int);
+
+__END_DECLS
+
+#endif /* !_INTTYPES_H_ */