Create local C library implementation (1/2)

- 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: I91cddfb3229775f770ad781589670c57d347a154

1 files changed, 0 insertions, 115 deletions

diff --git a/lib/non-semihosting/strtoull.c b/lib/non-semihosting/strtoull.c
deleted file mode 100644
index 61b41f33..00000000
--- a/lib/non-semihosting/strtoull.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*-
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  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.
- * 4. 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.
- */
-
-/*
- * Portions copyright (c) 2009-2013, ARM Limited and Contributors. All rights reserved.
- */
-
-#include "types.h"
-#include "ctype.h"
-#include "limits.h"
-
-/*
- * Convert a string to an unsigned long long integer.
- *
- * Assumes that the upper and lower case
- * alphabets and digits are each contiguous.
- */
-static unsigned long long
-bsd_strtoull(const char *nptr, char **endptr, int base)
-{
-	const char *s;
-	unsigned long long acc;
-	char c;
-	unsigned long long cutoff;
-	int neg, any, cutlim;
-
-	/*
-	 * See strtoq for comments as to the logic used.
-	 */
-	s = nptr;
-	do {
-		c = *s++;
-	} while (isspace((unsigned char)c));
-	if (c == '-') {
-		neg = 1;
-		c = *s++;
-	} else {
-		neg = 0;
-		if (c == '+')
-			c = *s++;
-	}
-	if ((base == 0 || base == 16) &&
-	    c == '0' && (*s == 'x' || *s == 'X') &&
-	    ((s[1] >= '0' && s[1] <= '9') ||
-	    (s[1] >= 'A' && s[1] <= 'F') ||
-	    (s[1] >= 'a' && s[1] <= 'f'))) {
-		c = s[1];
-		s += 2;
-		base = 16;
-	}
-	if (base == 0)
-		base = c == '0' ? 8 : 10;
-	acc = any = 0;
-
-	cutoff = ULLONG_MAX / base;
-	cutlim = ULLONG_MAX % base;
-	for ( ; ; c = *s++) {
-		if (c >= '0' && c <= '9')
-			c -= '0';
-		else if (c >= 'A' && c <= 'Z')
-			c -= 'A' - 10;
-		else if (c >= 'a' && c <= 'z')
-			c -= 'a' - 10;
-		else
-			break;
-		if (c >= base)
-			break;
-		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim))
-			any = -1;
-		else {
-			any = 1;
-			acc *= base;
-			acc += c;
-		}
-	}
-	if (any < 0) {
-		acc = ULLONG_MAX;
-	} else if (neg)
-		acc = -acc;
-	if (endptr != NULL)
-		*endptr = (char *)(any ? s - 1 : nptr);
-	return (acc);
-}
-
-int strict_strtoull(const char *str, unsigned int base, long long *result)
-{
-	*result = bsd_strtoull(str, NULL, base);
-	return 0;
-}