1 files changed, 53 insertions, 0 deletions
diff --git a/libgloss/pru/do_global_dtors.c b/libgloss/pru/do_global_dtors.c
new file mode 100644
index 000000000..149c631f7
--- /dev/null
+++ b/libgloss/pru/do_global_dtors.c
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * do_global_dtors - invoke global destructors
+ *
+ * Copyright (c) 2018-2019 Dimitar Dimitrov <dimitar@dinux.eu>
+ * 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 ``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 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.
+ */
+#include <stdint.h>
+#include <_ansi.h>
+#include "syscall.h"
+
+extern void *__fini_array_start;
+extern void *__fini_array_end;
+
+/*
+ * _do_global_dtors
+ */
+void
+_do_global_dtors (void)
+{
+    /* ABI dictates pointers in init/fini arrays are 16-bit.  */
+    const uint16_t *end = (uint16_t *)&__fini_array_end;
+    const uint16_t *begin = (uint16_t *)&__fini_array_start;
+    const uint16_t *p;
+    void (**dtor) (void);
+
+    /* call destructors in reverse order */
+    for (p = end; p > begin; ) {
+	p--;
+	dtor = (void *)p;
+	(*dtor) ();
+    }
+}