From abdef8eb901ce829fdc9fbe7eb89c8327c262f07 Mon Sep 17 00:00:00 2001
From: Jan-Benedict Glaw <jbglaw@getslash.de>
Date: Mon, 17 Nov 2014 03:30:13 +0100
Subject: Sync libiberty from GCC

---
 libiberty/strtoull.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 libiberty/strtoull.c

(limited to 'libiberty/strtoull.c')

diff --git a/libiberty/strtoull.c b/libiberty/strtoull.c
new file mode 100644
index 0000000..2f580fb
--- /dev/null
+++ b/libiberty/strtoull.c
@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2014 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.
+ * 3. [rescinded 22 July 1999]
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#include <errno.h>
+#ifdef NEED_DECLARATION_ERRNO
+extern int errno;
+#endif
+#if 0
+#include <stdlib.h>
+#endif
+#include "ansidecl.h"
+#include "safe-ctype.h"
+
+#ifdef HAVE_LONG_LONG
+
+__extension__
+typedef unsigned long long ullong_type;
+
+#ifndef ULLONG_MAX
+#define ULLONG_MAX (~(ullong_type)0) /* 0xFFFFFFFFFFFFFFFF */
+#endif
+
+/*
+ * Convert a string to an unsigned long long integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+ullong_type
+strtoull(const char *nptr, char **endptr, register int base)
+{
+	register const char *s = nptr;
+	register ullong_type acc;
+	register int c;
+	register ullong_type cutoff;
+	register int neg = 0, any, cutlim;
+
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	do {
+		c = *s++;
+	} while (ISSPACE(c));
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+')
+		c = *s++;
+	if ((base == 0 || base == 16) &&
+	    c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+	if (base == 0)
+		base = c == '0' ? 8 : 10;
+	cutoff = (ullong_type)ULLONG_MAX / (ullong_type)base;
+	cutlim = (ullong_type)ULLONG_MAX % (ullong_type)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (ISDIGIT(c))
+			c -= '0';
+		else if (ISALPHA(c))
+			c -= ISUPPER(c) ? 'A' - 10 : '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;
+		errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (char *) (any ? s - 1 : nptr);
+	return (acc);
+}
+
+#endif /* ifdef HAVE_LONG_LONG */
-- 
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