tests/plugin/syscall.c

/*
 * Copyright (C) 2020, Matthias Weckbecker <matthias@weckbecker.name>
 *
 * License: GNU GPL, version 2 or later.
 *   See the COPYING file in the top-level directory.
 */
#include <inttypes.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <glib.h>

#include <qemu-plugin.h>

QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;

static void vcpu_syscall(qemu_plugin_id_t id, unsigned int vcpu_index,
                         int64_t num, uint64_t a1, uint64_t a2,
                         uint64_t a3, uint64_t a4, uint64_t a5,
                         uint64_t a6, uint64_t a7, uint64_t a8)
{
    g_autofree gchar *out = g_strdup_printf("syscall #%" PRIi64 "\n", num);
    qemu_plugin_outs(out);
}

static void vcpu_syscall_ret(qemu_plugin_id_t id, unsigned int vcpu_idx,
                             int64_t num, int64_t ret)
{
    g_autofree gchar *out;
    out = g_strdup_printf("syscall #%" PRIi64 " returned -> %" PRIi64 "\n",
            num, ret);
    qemu_plugin_outs(out);
}

/* ************************************************************************* */

static void plugin_exit(qemu_plugin_id_t id, void *p) {}

QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
                                           const qemu_info_t *info,
                                           int argc, char **argv)
{
    qemu_plugin_register_vcpu_syscall_cb(id, vcpu_syscall);
    qemu_plugin_register_vcpu_syscall_ret_cb(id, vcpu_syscall_ret);
    qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
    return 0;
}