This patch adds global variables, defines, functions declarations,
and function stubs for deterministic VM replay used by external modules.
Signed-off-by: Pavel Dovgalyuk <pavel.dovga...@ispras.ru>
---
Makefile.target | 1 +
qapi-schema.json | 32 ++++++++++++++++++++++++++++++++
replay/Makefile.objs | 1 +
replay/replay.c | 25 +++++++++++++++++++++++++
replay/replay.h | 23 +++++++++++++++++++++++
stubs/Makefile.objs | 1 +
stubs/replay.c | 8 ++++++++
7 files changed, 91 insertions(+), 0 deletions(-)
create mode 100755 replay/Makefile.objs
create mode 100755 replay/replay.c
create mode 100755 replay/replay.h
create mode 100755 stubs/replay.c
diff --git a/Makefile.target b/Makefile.target
index e9ff1ee..a45378f 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -83,6 +83,7 @@ all: $(PROGS) stap
#########################################################
# cpu emulator library
obj-y = exec.o translate-all.o cpu-exec.o
+obj-y += replay/
obj-y += tcg/tcg.o tcg/optimize.o
obj-$(CONFIG_TCG_INTERPRETER) += tci.o
obj-$(CONFIG_TCG_INTERPRETER) += disas/tci.o
diff --git a/qapi-schema.json b/qapi-schema.json
index 24379ab..49d61c5 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3508,3 +3508,35 @@
# Since: 2.1
##
{ 'command': 'rtc-reset-reinjection' }
+
+##
+# ReplayMode:
+#
+# Mode of the replay subsystem.
+#
+# @none: normal execution mode. Replay or record are not enabled.
+#
+# @record: record mode. All non-deterministic data is written into the
+# replay log.
+#
+# @play: replay mode. Non-deterministic data required for system execution
+# is read from the log.
+#
+# Since: 2.2
+##
+{ 'enum': 'ReplayMode',
+ 'data': [ 'none', 'record', 'play' ] }
+
+##
+# ReplaySubmode:
+#
+# Submode of the replay subsystem.
+#
+# @unknown: used for modes different from play.
+#
+# @normal: normal replay mode.
+#
+# Since: 2.2
+##
+{ 'enum': 'ReplaySubmode',
+ 'data': [ 'unknown', 'normal' ] }
diff --git a/replay/Makefile.objs b/replay/Makefile.objs
new file mode 100755
index 0000000..7ea860f
--- /dev/null
+++ b/replay/Makefile.objs
@@ -0,0 +1 @@
+obj-y += replay.o
diff --git a/replay/replay.c b/replay/replay.c
new file mode 100755
index 0000000..ac976b2
--- /dev/null
+++ b/replay/replay.c
@@ -0,0 +1,25 @@
+/*
+ * replay.c
+ *
+ * Copyright (c) 2010-2014 Institute for System Programming
+ * of the Russian Academy of Sciences.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "replay.h"
+
+ReplayMode replay_mode = REPLAY_MODE_NONE;
+/*! Stores current submode for PLAY mode */
+ReplaySubmode play_submode = REPLAY_SUBMODE_UNKNOWN;
+
+/* Suffix for the disk images filenames */
+char *replay_image_suffix;
+
+
+ReplaySubmode replay_get_play_submode(void)
+{
+ return play_submode;
+}
diff --git a/replay/replay.h b/replay/replay.h
new file mode 100755
index 0000000..51a18fe
--- /dev/null
+++ b/replay/replay.h
@@ -0,0 +1,23 @@
+#ifndef REPLAY_H
+#define REPLAY_H
+
+/*
+ * replay.h
+ *
+ * Copyright (c) 2010-2014 Institute for System Programming
+ * of the Russian Academy of Sciences.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qapi-types.h"
+
+extern ReplayMode replay_mode;
+extern char *replay_image_suffix;
+
+/*! Returns replay play submode */
+ReplaySubmode replay_get_play_submode(void);
+
+#endif
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 5e347d0..45a6c71 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -27,6 +27,7 @@ stub-obj-y += notify-event.o
stub-obj-y += pci-drive-hot-add.o
stub-obj-$(CONFIG_SPICE) += qemu-chr-open-spice.o
stub-obj-y += qtest.o
+stub-obj-y += replay.o
stub-obj-y += reset.o
stub-obj-y += runstate-check.o
stub-obj-y += set-fd-handler.o
diff --git a/stubs/replay.c b/stubs/replay.c
new file mode 100755
index 0000000..b146d55
--- /dev/null
+++ b/stubs/replay.c
@@ -0,0 +1,8 @@
+#include "replay/replay.h"
+
+ReplayMode replay_mode;
+
+ReplaySubmode replay_get_play_submode(void)
+{
+ return 0;
+}
