1 files changed, 52 insertions, 0 deletions
diff --git a/lang/ifc/files/cxa_atexit.c b/lang/ifc/files/cxa_atexit.c
new file mode 100644
index 000000000000..4154334a2c98
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+++ b/lang/ifc/files/cxa_atexit.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2002 Marius Strobl
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD: /tmp/pcvs/ports/lang/ifc/files/cxa_atexit.c,v 1.1 2002-11-18 09:27:32 maho Exp $
+ */
+
+#include <stdlib.h>
+
+/*
+ * The __cxa_atexit() function and friends are needed for full (IA64) C++ ABI
+ * compatibility but FreeBSD doesn't have implemented them, yet. In addition
+ * to the classic atexit() it is not only used to register functions to be
+ * called at program exit but also to call them (C++ destructors in that case)
+ * when a shared object is unloaded. For the later to work the dynamic linker
+ * assigns a unique dynamic shared object handle to every shared object while
+ * a handle of NULL represents a main program. When __cxa_finalize() is called
+ * with a specific (non-NULL) handle as an argument all functions registered
+ * via __cxa_atexit() and having the same handle are called.
+ * The best we can do here to emulate that behaviour until FreeBSD supports
+ * this is to register the functions via atexit(). While this certainly is a
+ * bad hack it seems to work, even the current dynamic linker is assigning
+ * the handles. I didn't see a function getting registered with an argument
+ * so far.
+ */
+int
+__cxa_atexit(void (*fn)(), void *arg, void *handle)
+{
+
+	return (handle ? atexit(fn) : 0);
+}