1 files changed, 98 insertions, 0 deletions
diff --git a/lib/libdwarf/dwarf_finish.c b/lib/libdwarf/dwarf_finish.c
new file mode 100644
index 0000000..d665ed9
--- /dev/null
+++ b/lib/libdwarf/dwarf_finish.c
@@ -0,0 +1,98 @@
+/*-
+ * Copyright (c) 2007 John Birrell (jb@freebsd.org)
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <stdlib.h>
+#include "_libdwarf.h"
+
+int
+dwarf_finish(Dwarf_Debug *dbgp, Dwarf_Error *error)
+{
+	Dwarf_Abbrev ab;
+	Dwarf_Abbrev tab;
+	Dwarf_Attribute at;
+	Dwarf_Attribute tat;
+	Dwarf_AttrValue av;
+	Dwarf_AttrValue tav;
+	Dwarf_CU cu;
+	Dwarf_CU tcu;
+	Dwarf_Debug dbg;
+	Dwarf_Die die;
+	Dwarf_Die tdie;
+
+	if (error == NULL)
+		/* Can only return a generic error. */
+		return DWARF_E_ERROR;
+
+	if (dbgp == NULL) {
+		DWARF_SET_ERROR(error, DWARF_E_ARGUMENT);
+		return DWARF_E_ERROR;
+	}
+
+	if ((dbg = *dbgp) == NULL)
+		return DWARF_E_NONE;
+
+	/* Free entries in the compilation unit list. */
+	STAILQ_FOREACH_SAFE(cu, &dbg->dbg_cu, cu_next, tcu) {
+		/* Free entries in the die list */
+		STAILQ_FOREACH_SAFE(die, &cu->cu_die, die_next, tdie) {
+			/* Free entries in the attribute value list */
+			STAILQ_FOREACH_SAFE(av, &die->die_attrval, av_next, tav) {
+				STAILQ_REMOVE(&die->die_attrval, av, _Dwarf_AttrValue, av_next);
+				free(av);
+			}
+
+			STAILQ_REMOVE(&cu->cu_die, die, _Dwarf_Die, die_next);
+			free(die);
+		}
+
+		/* Free entries in the abbrev list */
+		STAILQ_FOREACH_SAFE(ab, &cu->cu_abbrev, a_next, tab) {
+			/* Free entries in the attribute list */
+			STAILQ_FOREACH_SAFE(at, &ab->a_attrib, at_next, tat) {
+				STAILQ_REMOVE(&ab->a_attrib, at, _Dwarf_Attribute, at_next);
+				free(at);
+			}
+
+			STAILQ_REMOVE(&cu->cu_abbrev, ab, _Dwarf_Abbrev, a_next);
+			free(ab);
+		}
+
+		STAILQ_REMOVE(&dbg->dbg_cu, cu, _Dwarf_CU, cu_next);
+		free(cu);
+	}
+
+	if (dbg->dbg_elf_close)
+		/* Free resources associated with the ELF file. */
+		elf_end(dbg->dbg_elf);
+
+	free(dbg);
+
+	*dbgp = NULL;
+
+	return DWARF_E_NONE;
+}