On 3/31/25 16:42, Pierrick Bouvier wrote:
Nothing prevent plugins to be enabled on this platform for user
binaries, only the option in the driver is missing.
Signed-off-by: Pierrick Bouvier <pierrick.bouv...@linaro.org>
---
bsd-user/main.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/bsd-user/main.c b/bsd-user/main.c
index fdb160bed0f..329bd1acc02 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -175,6 +175,9 @@ static void usage(void)
"-strace log system calls\n"
"-trace
[[enable=]<pattern>][,events=<file>][,file=<file>]\n"
" specify tracing options\n"
+#ifdef CONFIG_PLUGIN
+ "-plugin [file=]<file>[,<argname>=<argvalue>]\n"
+#endif
"\n"
"Environment variables:\n"
"QEMU_STRACE Print system calls and arguments similar to
the\n"
@@ -225,6 +228,8 @@ static void init_task_state(TaskState *ts)
};
}
+static QemuPluginList plugins = QTAILQ_HEAD_INITIALIZER(plugins);
+
void gemu_log(const char *fmt, ...)
{
va_list ap;
@@ -307,6 +312,7 @@ int main(int argc, char **argv)
cpu_model = NULL;
qemu_add_opts(&qemu_trace_opts);
+ qemu_plugin_add_opts();
optind = 1;
for (;;) {
@@ -399,6 +405,11 @@ int main(int argc, char **argv)
do_strace = 1;
} else if (!strcmp(r, "trace")) {
trace_opt_parse(optarg);
+#ifdef CONFIG_PLUGIN
+ } else if (!strcmp(r, "plugin")) {
+ r = argv[optind++];
+ qemu_plugin_opt_parse(r, &plugins);
+#endif
} else if (!strcmp(r, "0")) {
argv0 = argv[optind++];
} else {
@@ -433,6 +444,7 @@ int main(int argc, char **argv)
exit(1);
}
trace_init_file();
+ qemu_plugin_load_list(&plugins, &error_fatal);
/* Zero out regs */
memset(regs, 0, sizeof(struct target_pt_regs));
For BSD folks,
if you're not familiar with plugins, you can try this command:
$ ./configure && ninja -C build
# plugins are built by default
$ ./build/qemu-x86_64 \
-plugin ./build/contrib/plugins/libstoptrigger,icount=1000000 \
-plugin ./build/tests/tcg/plugins/libinsn \
-d plugin \
./build/qemu-system-x86_64 --version
Output should be something similar to:
icount reached at 0x7f2933a6a3f8, exiting
cpu 0 insns: 1000001
total insns: 1000001
It stopped after executing 1000001 instructions (libstoptrigger), and
report how many instructions (libinsn) were executed.
Regards,
Pierrick
