* @file
* @brief Generic hooks for various libFirm functions.
* @author Michael Beck
- * @version $Id$
*/
#include "config.h"
+#include <assert.h>
+
#include "irhooks.h"
-/* the hooks */
hook_entry_t *hooks[hook_last];
-/* register a hook */
void register_hook(hook_type_t hook, hook_entry_t *entry)
{
/* check if a hook function is specified. It's a union, so no matter which one */
if (! entry->hook._hook_turn_into_id)
return;
+ /* hook should not be registered yet */
+ assert(entry->next == NULL && hooks[hook] != entry);
+
entry->next = hooks[hook];
hooks[hook] = entry;
}
-/* unregister a hook */
void unregister_hook(hook_type_t hook, hook_entry_t *entry)
{
hook_entry_t *p;