1 files changed, 38 insertions, 0 deletions
diff --git a/src/commonlib/list.c b/src/commonlib/list.c
new file mode 100644
index 000000000000..b1030c826377
--- /dev/null
+++ b/src/commonlib/list.c
@@ -0,0 +1,38 @@
+/* Taken from depthcharge: src/base/list.c */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <commonlib/list.h>
+
+void list_remove(struct list_node *node)
+{
+	if (node->prev)
+		node->prev->next = node->next;
+	if (node->next)
+		node->next->prev = node->prev;
+}
+
+void list_insert_after(struct list_node *node, struct list_node *after)
+{
+	node->next = after->next;
+	node->prev = after;
+	after->next = node;
+	if (node->next)
+		node->next->prev = node;
+}
+
+void list_insert_before(struct list_node *node, struct list_node *before)
+{
+	node->prev = before->prev;
+	node->next = before;
+	before->prev = node;
+	if (node->prev)
+		node->prev->next = node;
+}
+
+void list_append(struct list_node *node, struct list_node *head)
+{
+	while (head->next)
+		head = head->next;
+
+	list_insert_after(node, head);
+}