1 files changed, 69 insertions, 0 deletions
diff --git a/gcc/ch/runtime/concatstr.c b/gcc/ch/runtime/concatstr.c
new file mode 100644
index 0000000..e4105d6
--- /dev/null
+++ b/gcc/ch/runtime/concatstr.c
@@ -0,0 +1,69 @@
+/* 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))
+
+extern void cause_exception (char *exname, char *file, int lineno);
+
+/*
+ * function __concatstring 
+ *
+ * parameters:
+ *     OUT  - pointer to output string
+ *     S1   - pointer to left string
+ *     LEN1 - length of left string
+ *     S2   - pointer to right string
+ *     LEN2 - length of right string
+ *
+ * returns:
+ *     pointer to OUT string
+ *
+ * exceptions:
+ *     none
+ *
+ * abstract:
+ *     concatenates two character strings into the output string
+ *
+ */
+
+char *
+__concatstring (out, s1, len1, s2, len2)
+     char *out, *s1;
+     int   len1;
+     char *s2;
+     int   len2;
+{
+  if (out)
+    {
+      if (s2 /* Check for overlap between s2 and out. */
+	  && ((s2 >= out && s2 < (out + len1 + len2))
+	      || (s2 + len2 > out && s2 <= out + len1)))
+	{
+	  char *tmp = alloca (len2);
+	  memcpy (tmp, s2, len2);
+	  s2 = tmp;
+	}
+      if (s1)
+	memmove (out, s1, len1);
+      if (s2)
+	memcpy (&out[len1], s2, len2);
+    }
+  return out;
+}