1 files changed, 110 insertions, 0 deletions
diff --git a/librols/fillbytes.c b/librols/fillbytes.c
new file mode 100644
index 0000000..8d500e9
--- /dev/null
+++ b/librols/fillbytes.c
@@ -0,0 +1,110 @@
+/*
+ * This file has been modified for the cdrkit suite.
+ *
+ * The behaviour and appearence of the program code below can differ to a major
+ * extent from the version distributed by the original author(s).
+ *
+ * For details, see Changelog file distributed with the cdrkit package. If you
+ * received this file from another source then ask the distributing person for
+ * a log of modifications.
+ *
+ */
+
+/* @(#)fillbytes.c	1.13 03/06/15 Copyright 1987, 1995-2003 J. Schilling */
+/*
+ *	fill memory with data
+ *
+ *	Copyright (c) 1987, 1995-2003 J. Schilling
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <standard.h>
+#include <align.h>
+#include <schily.h>
+
+#define	DO8(a)	a; a; a; a; a; a; a; a;
+
+#define	cval	((char) lval)
+
+#ifdef	PROTOTYPES
+EXPORT char *
+fillbytes(void *tov, int cnt, char val)
+#else
+EXPORT char *
+fillbytes(tov, cnt, val)
+	void	*tov;
+	int	cnt;
+	char	val;
+#endif
+{
+	register char	*to = (char *)tov;
+	register int	n;
+	register long	lval;
+
+	/*
+	 * If we change cnt to be unsigned, check for == instead of <=
+	 */
+	if ((n = cnt) <= 0)
+		return (to);
+
+	lval = val & 0xFF;
+
+	/*
+	 * Assign byte-wise until properly aligned for a long pointer.
+	 */
+	while (--n >= 0 && !laligned(to)) {
+		*to++ = cval;
+	}
+	n++;
+
+	if (n >= (int)(8 * sizeof (long))) {
+		register int rem = n % (8 * sizeof (long));
+
+		lval |= (lval<<8);
+		lval |= (lval<<16);
+#if SIZE_LONG > SIZE_INT
+		lval |= (lval<<32);
+#endif
+
+		n /= (8 * sizeof (long));
+		{
+			register long *tol = (long *)to;
+
+			do {
+				DO8 (*tol++ = lval);
+			} while (--n > 0);
+
+			to = (char *)tol;
+		}
+		n = rem;
+
+		if (n >= 8) {
+			n -= 8;
+			do {
+				DO8 (*to++ = cval);
+			} while ((n -= 8) >= 0);
+			n += 8;
+		}
+		if (n > 0) do {
+			*to++ = cval;
+		} while (--n > 0);
+		return (to);
+	}
+	if (n > 0) do {
+		*to++ = cval;
+	} while (--n > 0);
+	return (to);
+}