From: Rob Clark <robclark@freedesktop.org>
Date: Wed, 29 Apr 2015 12:38:45 +0000 (-0400)
Subject: util/list: add list_first/last_entry
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c79b2e626c60a29f684bc389f07a712b59fa99cc;p=mesa.git

util/list: add list_first/last_entry

I need an easier way to get at head/tail in ir3.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
---

diff --git a/src/util/list.h b/src/util/list.h
index 946034710ef..b98ce59ff77 100644
--- a/src/util/list.h
+++ b/src/util/list.h
@@ -140,6 +140,13 @@ static inline void list_validate(struct list_head *list)
 	     - ((char *)&(sample)->member - (char *)(sample)))
 #endif
 
+#define list_first_entry(ptr, type, member) \
+        LIST_ENTRY(type, (ptr)->next, member)
+
+#define list_last_entry(ptr, type, member) \
+        LIST_ENTRY(type, (ptr)->prev, member)
+
+
 #define LIST_FOR_EACH_ENTRY(pos, head, member)				\
    for (pos = NULL, pos = container_of((head)->next, pos, member);	\
 	&pos->member != (head);						\