These will soon gain a couple of users.
Signed-off-by: Emilio G. Cota <c...@braap.org>
---
accel/tcg/translate-all.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 8f6f8f1..396c10c 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -115,6 +115,25 @@ typedef struct PageDesc {
#endif
} PageDesc;
+/* list iterators for lists of tagged pointers in TranslationBlock */
+#define tb_for_each_tagged(head, tb, n, field) \
+ for (n = (head) & 1, \
+ tb = (TranslationBlock *)((head) & ~1); \
+ tb; \
+ tb = (TranslationBlock *)tb->field[n], \
+ n = (uintptr_t)tb & 1, \
+ tb = (TranslationBlock *)((uintptr_t)tb & ~1))
+
+/* prev is a *uintptr_t. It allows us to safely remove tb */
+#define tb_for_each_tagged_safe(head, tb, n, field, prev) \
+ for (prev = &(head), \
+ n = *prev & 1, \
+ tb = (TranslationBlock *)(*prev & ~1); \
+ tb; \
+ prev = &tb->field[n], \
+ n = (uintptr_t)*prev & 1, \
+ tb = (TranslationBlock *)(*prev & ~1))
+
/* In system mode we want L1_MAP to be based on ram offsets,
while in user mode we want it to be based on virtual addresses. */
#if !defined(CONFIG_USER_ONLY)
--
2.7.4
