1 /*
2 * Copyright (c) 2025 Linaro Ltd
3 *
4 * Test the reset/uninstall cycle of a plugin.
5 *
6 * SPDX-License-Identifier: GPL-2.0-or-later
7 */
8 #include <glib.h>
9
10 #include <qemu-plugin.h>
11
12 QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
13 static qemu_plugin_id_t plugin_id;
14 static bool was_reset;
15 static bool was_uninstalled;
16
after_uninstall(qemu_plugin_id_t id)17 static void after_uninstall(qemu_plugin_id_t id)
18 {
19 g_assert(was_reset && !was_uninstalled);
20 qemu_plugin_outs("uninstall done\n");
21 was_uninstalled = true;
22 }
23
tb_exec_after_reset(unsigned int vcpu_index,void * userdata)24 static void tb_exec_after_reset(unsigned int vcpu_index, void *userdata)
25 {
26 g_assert(was_reset && !was_uninstalled);
27 qemu_plugin_uninstall(plugin_id, after_uninstall);
28 }
29
tb_trans_after_reset(qemu_plugin_id_t id,struct qemu_plugin_tb * tb)30 static void tb_trans_after_reset(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
31 {
32 g_assert(was_reset && !was_uninstalled);
33 qemu_plugin_register_vcpu_tb_exec_cb(tb, tb_exec_after_reset,
34 QEMU_PLUGIN_CB_NO_REGS, NULL);
35 }
36
after_reset(qemu_plugin_id_t id)37 static void after_reset(qemu_plugin_id_t id)
38 {
39 g_assert(!was_reset && !was_uninstalled);
40 qemu_plugin_outs("reset done\n");
41 was_reset = true;
42 qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_after_reset);
43 }
44
tb_exec_before_reset(unsigned int vcpu_index,void * userdata)45 static void tb_exec_before_reset(unsigned int vcpu_index, void *userdata)
46 {
47 g_assert(!was_reset && !was_uninstalled);
48 qemu_plugin_reset(plugin_id, after_reset);
49 }
50
tb_trans_before_reset(qemu_plugin_id_t id,struct qemu_plugin_tb * tb)51 static void tb_trans_before_reset(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
52 {
53 g_assert(!was_reset && !was_uninstalled);
54 qemu_plugin_register_vcpu_tb_exec_cb(tb, tb_exec_before_reset,
55 QEMU_PLUGIN_CB_NO_REGS, NULL);
56 }
57
qemu_plugin_install(qemu_plugin_id_t id,const qemu_info_t * info,int argc,char ** argv)58 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
59 const qemu_info_t *info,
60 int argc, char **argv)
61 {
62 plugin_id = id;
63 qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_before_reset);
64 return 0;
65 }
66
67 /* Since we uninstall the plugin, we can't use qemu_plugin_register_atexit_cb,
68 * so we use destructor attribute instead. */
on_plugin_exit(void)69 static void __attribute__((destructor)) on_plugin_exit(void)
70 {
71 g_assert(was_reset && was_uninstalled);
72 qemu_plugin_outs("plugin exit\n");
73 }
74