[v4,45/54] linux-user: support -plugin option

Commit Message

Alex Bennée July 31, 2019, 4:07 p.m. UTC

From: Lluís Vilanova <[e-mail]>

Signed-off-by: Lluís Vilanova <[e-mail]>
[ cota: s/instrument/plugin ]
Signed-off-by: Emilio G. Cota <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
Signed-off-by: Alex Bennée <[e-mail]>
---
 linux-user/main.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Patch

diff --git a/linux-user/main.c b/linux-user/main.c
index 8ffc5251955..42daa47dd3c 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -33,6 +33,7 @@ 
 #include "qemu/error-report.h"
 #include "qemu/help_option.h"
 #include "qemu/module.h"
+#include "qemu/plugin.h"
 #include "cpu.h"
 #include "exec/exec-all.h"
 #include "tcg.h"
@@ -392,6 +393,15 @@  static void handle_arg_trace(const char *arg)
     trace_file = trace_opt_parse(arg);
 }
 
+static QemuPluginList plugins = QTAILQ_HEAD_INITIALIZER(plugins);
+
+#ifdef CONFIG_PLUGIN
+static void handle_arg_plugin(const char *arg)
+{
+    qemu_plugin_opt_parse(arg, &plugins);
+}
+#endif
+
 struct qemu_argument {
     const char *argv;
     const char *env;
@@ -443,6 +453,10 @@  static const struct qemu_argument arg_table[] = {
      "",           "Seed for pseudo-random number generator"},
     {"trace",      "QEMU_TRACE",       true,  handle_arg_trace,
      "",           "[[enable=]<pattern>][,events=<file>][,file=<file>]"},
+#ifdef CONFIG_PLUGIN
+    {"plugin",     "QEMU_PLUGIN",      true,  handle_arg_plugin,
+     "",           "[file=]<file>[,arg=<string>]"},
+#endif
     {"version",    "QEMU_VERSION",     false, handle_arg_version,
      "",           "display version information and exit"},
     {NULL, NULL, false, NULL, NULL, NULL}
@@ -633,6 +647,7 @@  int main(int argc, char **argv, char **envp)
     cpu_model = NULL;
 
     qemu_add_opts(&qemu_trace_opts);
+    qemu_plugin_add_opts();
 
     optind = parse_args(argc, argv);
 
@@ -640,6 +655,9 @@  int main(int argc, char **argv, char **envp)
         exit(1);
     }
     trace_init_file(trace_file);
+    if (qemu_plugin_load_list(&plugins)) {
+        exit(1);
+    }
 
     /* Zero out regs */
     memset(regs, 0, sizeof(struct target_pt_regs));