ioport: add destructor method to IORange

Previously all callers had a containing object with a destructor that
could be used to trigger cleanup of the IORange objects (typically
just freeing the containing object), but a forthcoming memory API
change doesn't fit this pattern.  Rather than setting up a new global
table, extend the ioport system to support destructors.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/iorange.h b/iorange.h
index 97831683f0..cd980a8312 100644
--- a/iorange.h
+++ b/iorange.h
@@ -11,6 +11,7 @@ struct IORangeOps {
                  uint64_t *data);
     void (*write)(IORange *iorange, uint64_t offset, unsigned width,
                   uint64_t data);
+    void (*destructor)(IORange *iorange);
 };
 
 struct IORange {