tests/plugin/syscall.c

   1 /*
   2  * Copyright (C) 2020, Matthias Weckbecker <matthias@weckbecker.name>
   3  *
   4  * License: GNU GPL, version 2 or later.
   5  *   See the COPYING file in the top-level directory.
   6  */
   7 #include <inttypes.h>
   8 #include <assert.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <glib.h>
  14
  15 #include <qemu-plugin.h>
  16
  17 QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
  18
  19 static void vcpu_syscall(qemu_plugin_id_t id, unsigned int vcpu_index,
  20                          int64_t num, uint64_t a1, uint64_t a2,
  21                          uint64_t a3, uint64_t a4, uint64_t a5,
  22                          uint64_t a6, uint64_t a7, uint64_t a8)
  23 {
  24     g_autofree gchar *out = g_strdup_printf("syscall #%" PRIi64 "\n", num);
  25     qemu_plugin_outs(out);
  26 }
  27
  28 static void vcpu_syscall_ret(qemu_plugin_id_t id, unsigned int vcpu_idx,
  29                              int64_t num, int64_t ret)
  30 {
  31     g_autofree gchar *out;
  32     out = g_strdup_printf("syscall #%" PRIi64 " returned -> %" PRIi64 "\n",
  33             num, ret);
  34     qemu_plugin_outs(out);
  35 }
  36
  37 /* ************************************************************************* */
  38
  39 static void plugin_exit(qemu_plugin_id_t id, void *p) {}
  40
  41 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
  42                                            const qemu_info_t *info,
  43                                            int argc, char **argv)
  44 {
  45     qemu_plugin_register_vcpu_syscall_cb(id, vcpu_syscall);
  46     qemu_plugin_register_vcpu_syscall_ret_cb(id, vcpu_syscall_ret);
  47     qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
  48     return 0;
  49 }