| 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 | |
| 17 | static void after_uninstall(void *userdata) |
| 18 | { |
| 19 | g_assert(was_reset && !was_uninstalled); |
| 20 | qemu_plugin_outs("uninstall done\n"); |
| 21 | was_uninstalled = true; |
| 22 | } |
| 23 | |
| 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, NULL); |
| 28 | } |
| 29 | |
| 30 | static void tb_trans_after_reset(struct qemu_plugin_tb *tb, void *userdata) |
| 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 | |
| 37 | static void after_reset(void *userdata) |
| 38 | { |
| 39 | qemu_plugin_id_t id = (qemu_plugin_id_t) userdata; |
| 40 | g_assert(!was_reset && !was_uninstalled); |
| 41 | qemu_plugin_outs("reset done\n"); |
| 42 | was_reset = true; |
| 43 | qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_after_reset, NULL); |
| 44 | } |
| 45 | |
| 46 | static void tb_exec_before_reset(unsigned int vcpu_index, void *userdata) |
| 47 | { |
| 48 | g_assert(!was_reset && !was_uninstalled); |
| 49 | qemu_plugin_reset(plugin_id, after_reset, (void *) plugin_id); |
| 50 | } |
| 51 | |
| 52 | static void tb_trans_before_reset(struct qemu_plugin_tb *tb, void *userdata) |
| 53 | { |
| 54 | g_assert(!was_reset && !was_uninstalled); |
| 55 | qemu_plugin_register_vcpu_tb_exec_cb(tb, tb_exec_before_reset, |
| 56 | QEMU_PLUGIN_CB_NO_REGS, NULL); |
| 57 | } |
| 58 | |
| 59 | QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, |
| 60 | const qemu_info_t *info, |
| 61 | int argc, char **argv) |
| 62 | { |
| 63 | plugin_id = id; |
| 64 | qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_before_reset, NULL); |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | /* Since we uninstall the plugin, we can't use qemu_plugin_register_atexit_cb, |
| 69 | * so we use destructor attribute instead. */ |
| 70 | static void __attribute__((destructor)) on_plugin_exit(void) |
| 71 | { |
| 72 | g_assert(was_reset && was_uninstalled); |
| 73 | qemu_plugin_outs("plugin exit\n"); |
| 74 | } |