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tests/tcg/plugins: add plugin to test reset and uninstall

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We perform a plugin reset, uninstall, and make sure we went through
those steps.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20250404032027.430575-3-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2025-04-03 20:20:27 -07:00 committed by Alex Bennée
parent c07cd110a1
commit d832ff9d02
2 changed files with 74 additions and 1 deletions
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2
tests/tcg/plugins/meson.build
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@ -1,6 +1,6 @@
t = [] t = []
if get_option('plugins') if get_option('plugins')
foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'syscall'] foreach i : ['bb', 'empty', 'inline', 'insn', 'mem', 'reset', 'syscall']
if host_os == 'windows' if host_os == 'windows'
t += shared_module(i, files(i + '.c') + '../../../contrib/plugins/win32_linker.c', t += shared_module(i, files(i + '.c') + '../../../contrib/plugins/win32_linker.c',
include_directories: '../../../include/qemu', include_directories: '../../../include/qemu',

73
tests/tcg/plugins/reset.c Normal file
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@ -0,0 +1,73 @@
/*
* Copyright (c) 2025 Linaro Ltd
*
* Test the reset/uninstall cycle of a plugin.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <glib.h>
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
static qemu_plugin_id_t plugin_id;
static bool was_reset;
static bool was_uninstalled;
static void after_uninstall(qemu_plugin_id_t id)
{
g_assert(was_reset && !was_uninstalled);
qemu_plugin_outs("uninstall done\n");
was_uninstalled = true;
}
static void tb_exec_after_reset(unsigned int vcpu_index, void *userdata)
{
g_assert(was_reset && !was_uninstalled);
qemu_plugin_uninstall(plugin_id, after_uninstall);
}
static void tb_trans_after_reset(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
{
g_assert(was_reset && !was_uninstalled);
qemu_plugin_register_vcpu_tb_exec_cb(tb, tb_exec_after_reset,
QEMU_PLUGIN_CB_NO_REGS, NULL);
}
static void after_reset(qemu_plugin_id_t id)
{
g_assert(!was_reset && !was_uninstalled);
qemu_plugin_outs("reset done\n");
was_reset = true;
qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_after_reset);
}
static void tb_exec_before_reset(unsigned int vcpu_index, void *userdata)
{
g_assert(!was_reset && !was_uninstalled);
qemu_plugin_reset(plugin_id, after_reset);
}
static void tb_trans_before_reset(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
{
g_assert(!was_reset && !was_uninstalled);
qemu_plugin_register_vcpu_tb_exec_cb(tb, tb_exec_before_reset,
QEMU_PLUGIN_CB_NO_REGS, NULL);
}
QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
const qemu_info_t *info,
int argc, char **argv)
{
plugin_id = id;
qemu_plugin_register_vcpu_tb_trans_cb(id, tb_trans_before_reset);
return 0;
}
/* Since we uninstall the plugin, we can't use qemu_plugin_register_atexit_cb,
* so we use destructor attribute instead. */
static void __attribute__((destructor)) on_plugin_exit(void)
{
g_assert(was_reset && was_uninstalled);
qemu_plugin_outs("plugin exit\n");
}