---
cpu-all.h | 3 +++
exec.c | 38 ++++++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+), 0 deletions(-)
diff --git a/cpu-all.h b/cpu-all.h
index 3439999..67e795e 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -928,6 +928,9 @@ void *cpu_physical_memory_map(target_phys_addr_t addr,
int is_write);
void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
int is_write);
+void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
+void cpu_unregister_map_client(void *cookie);
+
uint32_t ldub_phys(target_phys_addr_t addr);
uint32_t lduw_phys(target_phys_addr_t addr);
uint32_t ldl_phys(target_phys_addr_t addr);
diff --git a/exec.c b/exec.c
index 7162271..62bedc0 100644
--- a/exec.c
+++ b/exec.c
@@ -3053,6 +3053,43 @@ typedef struct {
static BounceBuffer bounce;
+typedef struct MapClient {
+ void *opaque;
+ void (*callback)(void *opaque);
+ LIST_ENTRY(MapClient) link;
+} MapClient;
+
+static LIST_HEAD(map_client_list, MapClient) map_client_list
+ = LIST_HEAD_INITIALIZER(map_client_list);
+
+void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque))
+{
+ MapClient *client = qemu_malloc(sizeof(*client));
+
+ client->opaque = opaque;
+ client->callback = callback;
+ LIST_INSERT_HEAD(&map_client_list, client, link);
+ return client;
+}
+
+void cpu_unregister_map_client(void *_client)
+{
+ MapClient *client = (MapClient *)_client;
+
+ LIST_REMOVE(client, link);
+}
+
+static void cpu_notify_map_clients(void)
+{
+ MapClient *client;
+
+ while (!LIST_EMPTY(&map_client_list)) {
+ client = LIST_FIRST(&map_client_list);
+ client->callback(client->opaque);
+ LIST_REMOVE(client, link);
+ }
+}
+
void *cpu_physical_memory_map(target_phys_addr_t addr,
target_phys_addr_t *plen,
int is_write)
@@ -3137,6 +3174,7 @@ void cpu_physical_memory_unmap(void *buffer,
target_phys_addr_t len,
}
qemu_free(bounce.buffer);
bounce.buffer = NULL;
+ cpu_notify_map_clients();
}
/* warning: addr must be aligned */