1 files changed, 63 insertions, 0 deletions
diff --git a/libchill/memmove.c b/libchill/memmove.c
new file mode 100644
index 00000000000..7622428423b
--- /dev/null
+++ b/libchill/memmove.c
@@ -0,0 +1,63 @@
+/* Implement string-related runtime actions for CHILL.
+   Copyright (C) 1992,1993 Free Software Foundation, Inc.
+   Author: Bill Cox
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define MIN(a, b)  ((a) < (b) ? (a) : (b))
+
+
+/*
+ * function memmove
+ *
+ * parameters:
+ *     S1 - pointer to destination string
+ *     S2 - pointer to source string
+ *     LEN - length of string
+ *
+ * returns:
+ *     pointer to destination string
+ *
+ * exceptions:
+ *     none
+ *
+ * abstract:
+ *     copies a string safely, where the source and dest areas may overlap.
+ *
+ */
+
+void *
+memmove (s1, s2, n)
+     void *s1;
+     const void *s2;
+     int n;
+{
+  char *sc1 = s1;
+  const char *sc2 = s2;
+
+  if (sc2 < sc1 && (sc1 < sc2 + n))
+    for (sc1 += n, sc2 += n; 0 < n; --n)
+      *--sc1 = *--sc2;
+  else
+#if 0
+    for (; 0 < n; --n)
+      *sc1++ = *sc2++;
+#else
+    memcpy (sc1, sc2, n);
+#endif
+  return s1;
+}