Add qemu 2.4.0
[kvmfornfv.git] / qemu / monitor.c
diff --git a/qemu/monitor.c b/qemu/monitor.c
new file mode 100644 (file)
index 0000000..aeea2b5
--- /dev/null
@@ -0,0 +1,5363 @@
+/*
+ * QEMU monitor
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <dirent.h>
+#include "hw/hw.h"
+#include "monitor/qdev.h"
+#include "hw/usb.h"
+#include "hw/i386/pc.h"
+#include "hw/pci/pci.h"
+#include "sysemu/watchdog.h"
+#include "hw/loader.h"
+#include "exec/gdbstub.h"
+#include "net/net.h"
+#include "net/slirp.h"
+#include "sysemu/char.h"
+#include "ui/qemu-spice.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/numa.h"
+#include "monitor/monitor.h"
+#include "qemu/readline.h"
+#include "ui/console.h"
+#include "ui/input.h"
+#include "sysemu/blockdev.h"
+#include "audio/audio.h"
+#include "disas/disas.h"
+#include "sysemu/balloon.h"
+#include "qemu/timer.h"
+#include "migration/migration.h"
+#include "sysemu/kvm.h"
+#include "qemu/acl.h"
+#include "sysemu/tpm.h"
+#include "qapi/qmp/qerror.h"
+#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qfloat.h"
+#include "qapi/qmp/qlist.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qstring.h"
+#include "qapi/qmp/qjson.h"
+#include "qapi/qmp/json-streamer.h"
+#include "qapi/qmp/json-parser.h"
+#include <qom/object_interfaces.h>
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "trace.h"
+#include "trace/control.h"
+#ifdef CONFIG_TRACE_SIMPLE
+#include "trace/simple.h"
+#endif
+#include "exec/memory.h"
+#include "exec/cpu_ldst.h"
+#include "qmp-commands.h"
+#include "hmp.h"
+#include "qemu/thread.h"
+#include "block/qapi.h"
+#include "qapi/qmp-event.h"
+#include "qapi-event.h"
+#include "sysemu/block-backend.h"
+
+/* for hmp_info_irq/pic */
+#if defined(TARGET_SPARC)
+#include "hw/sparc/sun4m.h"
+#endif
+#include "hw/lm32/lm32_pic.h"
+
+/*
+ * Supported types:
+ *
+ * 'F'          filename
+ * 'B'          block device name
+ * 's'          string (accept optional quote)
+ * 'S'          it just appends the rest of the string (accept optional quote)
+ * 'O'          option string of the form NAME=VALUE,...
+ *              parsed according to QemuOptsList given by its name
+ *              Example: 'device:O' uses qemu_device_opts.
+ *              Restriction: only lists with empty desc are supported
+ *              TODO lift the restriction
+ * 'i'          32 bit integer
+ * 'l'          target long (32 or 64 bit)
+ * 'M'          Non-negative target long (32 or 64 bit), in user mode the
+ *              value is multiplied by 2^20 (think Mebibyte)
+ * 'o'          octets (aka bytes)
+ *              user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
+ *              K, k suffix, which multiplies the value by 2^60 for suffixes E
+ *              and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
+ *              2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
+ * 'T'          double
+ *              user mode accepts an optional ms, us, ns suffix,
+ *              which divides the value by 1e3, 1e6, 1e9, respectively
+ * '/'          optional gdb-like print format (like "/10x")
+ *
+ * '?'          optional type (for all types, except '/')
+ * '.'          other form of optional type (for 'i' and 'l')
+ * 'b'          boolean
+ *              user mode accepts "on" or "off"
+ * '-'          optional parameter (eg. '-f')
+ *
+ */
+
+typedef struct mon_cmd_t {
+    const char *name;
+    const char *args_type;
+    const char *params;
+    const char *help;
+    union {
+        void (*cmd)(Monitor *mon, const QDict *qdict);
+        void (*cmd_new)(QDict *params, QObject **ret_data, Error **errp);
+    } mhandler;
+    /* @sub_table is a list of 2nd level of commands. If it do not exist,
+     * mhandler should be used. If it exist, sub_table[?].mhandler should be
+     * used, and mhandler of 1st level plays the role of help function.
+     */
+    struct mon_cmd_t *sub_table;
+    void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
+} mon_cmd_t;
+
+/* file descriptors passed via SCM_RIGHTS */
+typedef struct mon_fd_t mon_fd_t;
+struct mon_fd_t {
+    char *name;
+    int fd;
+    QLIST_ENTRY(mon_fd_t) next;
+};
+
+/* file descriptor associated with a file descriptor set */
+typedef struct MonFdsetFd MonFdsetFd;
+struct MonFdsetFd {
+    int fd;
+    bool removed;
+    char *opaque;
+    QLIST_ENTRY(MonFdsetFd) next;
+};
+
+/* file descriptor set containing fds passed via SCM_RIGHTS */
+typedef struct MonFdset MonFdset;
+struct MonFdset {
+    int64_t id;
+    QLIST_HEAD(, MonFdsetFd) fds;
+    QLIST_HEAD(, MonFdsetFd) dup_fds;
+    QLIST_ENTRY(MonFdset) next;
+};
+
+typedef struct {
+    QObject *id;
+    JSONMessageParser parser;
+    /*
+     * When a client connects, we're in capabilities negotiation mode.
+     * When command qmp_capabilities succeeds, we go into command
+     * mode.
+     */
+    bool in_command_mode;       /* are we in command mode? */
+} MonitorQMP;
+
+/*
+ * To prevent flooding clients, events can be throttled. The
+ * throttling is calculated globally, rather than per-Monitor
+ * instance.
+ */
+typedef struct MonitorQAPIEventState {
+    QAPIEvent event;    /* Event being tracked */
+    int64_t rate;       /* Minimum time (in ns) between two events */
+    int64_t last;       /* QEMU_CLOCK_REALTIME value at last emission */
+    QEMUTimer *timer;   /* Timer for handling delayed events */
+    QObject *data;      /* Event pending delayed dispatch */
+} MonitorQAPIEventState;
+
+struct Monitor {
+    CharDriverState *chr;
+    int reset_seen;
+    int flags;
+    int suspend_cnt;
+    bool skip_flush;
+
+    QemuMutex out_lock;
+    QString *outbuf;
+    guint out_watch;
+
+    /* Read under either BQL or out_lock, written with BQL+out_lock.  */
+    int mux_out;
+
+    ReadLineState *rs;
+    MonitorQMP qmp;
+    CPUState *mon_cpu;
+    BlockCompletionFunc *password_completion_cb;
+    void *password_opaque;
+    mon_cmd_t *cmd_table;
+    QLIST_HEAD(,mon_fd_t) fds;
+    QLIST_ENTRY(Monitor) entry;
+};
+
+/* QMP checker flags */
+#define QMP_ACCEPT_UNKNOWNS 1
+
+/* Protects mon_list, monitor_event_state.  */
+static QemuMutex monitor_lock;
+
+static QLIST_HEAD(mon_list, Monitor) mon_list;
+static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
+static int mon_refcount;
+
+static mon_cmd_t mon_cmds[];
+static mon_cmd_t info_cmds[];
+
+static const mon_cmd_t qmp_cmds[];
+
+Monitor *cur_mon;
+
+static void monitor_command_cb(void *opaque, const char *cmdline,
+                               void *readline_opaque);
+
+/**
+ * Is @mon a QMP monitor?
+ */
+static inline bool monitor_is_qmp(const Monitor *mon)
+{
+    return (mon->flags & MONITOR_USE_CONTROL);
+}
+
+/**
+ * Is the current monitor, if any, a QMP monitor?
+ */
+bool monitor_cur_is_qmp(void)
+{
+    return cur_mon && monitor_is_qmp(cur_mon);
+}
+
+void monitor_read_command(Monitor *mon, int show_prompt)
+{
+    if (!mon->rs)
+        return;
+
+    readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
+    if (show_prompt)
+        readline_show_prompt(mon->rs);
+}
+
+int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
+                          void *opaque)
+{
+    if (mon->rs) {
+        readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
+        /* prompt is printed on return from the command handler */
+        return 0;
+    } else {
+        monitor_printf(mon, "terminal does not support password prompting\n");
+        return -ENOTTY;
+    }
+}
+
+static void monitor_flush_locked(Monitor *mon);
+
+static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
+                                  void *opaque)
+{
+    Monitor *mon = opaque;
+
+    qemu_mutex_lock(&mon->out_lock);
+    mon->out_watch = 0;
+    monitor_flush_locked(mon);
+    qemu_mutex_unlock(&mon->out_lock);
+    return FALSE;
+}
+
+/* Called with mon->out_lock held.  */
+static void monitor_flush_locked(Monitor *mon)
+{
+    int rc;
+    size_t len;
+    const char *buf;
+
+    if (mon->skip_flush) {
+        return;
+    }
+
+    buf = qstring_get_str(mon->outbuf);
+    len = qstring_get_length(mon->outbuf);
+
+    if (len && !mon->mux_out) {
+        rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len);
+        if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
+            /* all flushed or error */
+            QDECREF(mon->outbuf);
+            mon->outbuf = qstring_new();
+            return;
+        }
+        if (rc > 0) {
+            /* partinal write */
+            QString *tmp = qstring_from_str(buf + rc);
+            QDECREF(mon->outbuf);
+            mon->outbuf = tmp;
+        }
+        if (mon->out_watch == 0) {
+            mon->out_watch = qemu_chr_fe_add_watch(mon->chr, G_IO_OUT|G_IO_HUP,
+                                                   monitor_unblocked, mon);
+        }
+    }
+}
+
+void monitor_flush(Monitor *mon)
+{
+    qemu_mutex_lock(&mon->out_lock);
+    monitor_flush_locked(mon);
+    qemu_mutex_unlock(&mon->out_lock);
+}
+
+/* flush at every end of line */
+static void monitor_puts(Monitor *mon, const char *str)
+{
+    char c;
+
+    qemu_mutex_lock(&mon->out_lock);
+    for(;;) {
+        c = *str++;
+        if (c == '\0')
+            break;
+        if (c == '\n') {
+            qstring_append_chr(mon->outbuf, '\r');
+        }
+        qstring_append_chr(mon->outbuf, c);
+        if (c == '\n') {
+            monitor_flush_locked(mon);
+        }
+    }
+    qemu_mutex_unlock(&mon->out_lock);
+}
+
+void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
+{
+    char *buf;
+
+    if (!mon)
+        return;
+
+    if (monitor_is_qmp(mon)) {
+        return;
+    }
+
+    buf = g_strdup_vprintf(fmt, ap);
+    monitor_puts(mon, buf);
+    g_free(buf);
+}
+
+void monitor_printf(Monitor *mon, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    monitor_vprintf(mon, fmt, ap);
+    va_end(ap);
+}
+
+static int GCC_FMT_ATTR(2, 3) monitor_fprintf(FILE *stream,
+                                              const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    monitor_vprintf((Monitor *)stream, fmt, ap);
+    va_end(ap);
+    return 0;
+}
+
+static void monitor_json_emitter(Monitor *mon, const QObject *data)
+{
+    QString *json;
+
+    json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
+                                             qobject_to_json(data);
+    assert(json != NULL);
+
+    qstring_append_chr(json, '\n');
+    monitor_puts(mon, qstring_get_str(json));
+
+    QDECREF(json);
+}
+
+static QDict *build_qmp_error_dict(Error *err)
+{
+    QObject *obj;
+
+    obj = qobject_from_jsonf("{ 'error': { 'class': %s, 'desc': %s } }",
+                             ErrorClass_lookup[error_get_class(err)],
+                             error_get_pretty(err));
+
+    return qobject_to_qdict(obj);
+}
+
+static void monitor_protocol_emitter(Monitor *mon, QObject *data,
+                                     Error *err)
+{
+    QDict *qmp;
+
+    trace_monitor_protocol_emitter(mon);
+
+    if (!err) {
+        /* success response */
+        qmp = qdict_new();
+        if (data) {
+            qobject_incref(data);
+            qdict_put_obj(qmp, "return", data);
+        } else {
+            /* return an empty QDict by default */
+            qdict_put(qmp, "return", qdict_new());
+        }
+    } else {
+        /* error response */
+        qmp = build_qmp_error_dict(err);
+    }
+
+    if (mon->qmp.id) {
+        qdict_put_obj(qmp, "id", mon->qmp.id);
+        mon->qmp.id = NULL;
+    }
+
+    monitor_json_emitter(mon, QOBJECT(qmp));
+    QDECREF(qmp);
+}
+
+
+static MonitorQAPIEventState monitor_qapi_event_state[QAPI_EVENT_MAX];
+
+/*
+ * Emits the event to every monitor instance, @event is only used for trace
+ * Called with monitor_lock held.
+ */
+static void monitor_qapi_event_emit(QAPIEvent event, QObject *data)
+{
+    Monitor *mon;
+
+    trace_monitor_protocol_event_emit(event, data);
+    QLIST_FOREACH(mon, &mon_list, entry) {
+        if (monitor_is_qmp(mon) && mon->qmp.in_command_mode) {
+            monitor_json_emitter(mon, data);
+        }
+    }
+}
+
+/*
+ * Queue a new event for emission to Monitor instances,
+ * applying any rate limiting if required.
+ */
+static void
+monitor_qapi_event_queue(QAPIEvent event, QDict *data, Error **errp)
+{
+    MonitorQAPIEventState *evstate;
+    assert(event < QAPI_EVENT_MAX);
+    int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
+
+    evstate = &(monitor_qapi_event_state[event]);
+    trace_monitor_protocol_event_queue(event,
+                                       data,
+                                       evstate->rate,
+                                       evstate->last,
+                                       now);
+
+    /* Rate limit of 0 indicates no throttling */
+    qemu_mutex_lock(&monitor_lock);
+    if (!evstate->rate) {
+        monitor_qapi_event_emit(event, QOBJECT(data));
+        evstate->last = now;
+    } else {
+        int64_t delta = now - evstate->last;
+        if (evstate->data ||
+            delta < evstate->rate) {
+            /* If there's an existing event pending, replace
+             * it with the new event, otherwise schedule a
+             * timer for delayed emission
+             */
+            if (evstate->data) {
+                qobject_decref(evstate->data);
+            } else {
+                int64_t then = evstate->last + evstate->rate;
+                timer_mod_ns(evstate->timer, then);
+            }
+            evstate->data = QOBJECT(data);
+            qobject_incref(evstate->data);
+        } else {
+            monitor_qapi_event_emit(event, QOBJECT(data));
+            evstate->last = now;
+        }
+    }
+    qemu_mutex_unlock(&monitor_lock);
+}
+
+/*
+ * The callback invoked by QemuTimer when a delayed
+ * event is ready to be emitted
+ */
+static void monitor_qapi_event_handler(void *opaque)
+{
+    MonitorQAPIEventState *evstate = opaque;
+    int64_t now = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
+
+    trace_monitor_protocol_event_handler(evstate->event,
+                                         evstate->data,
+                                         evstate->last,
+                                         now);
+    qemu_mutex_lock(&monitor_lock);
+    if (evstate->data) {
+        monitor_qapi_event_emit(evstate->event, evstate->data);
+        qobject_decref(evstate->data);
+        evstate->data = NULL;
+    }
+    evstate->last = now;
+    qemu_mutex_unlock(&monitor_lock);
+}
+
+/*
+ * @event: the event ID to be limited
+ * @rate: the rate limit in milliseconds
+ *
+ * Sets a rate limit on a particular event, so no
+ * more than 1 event will be emitted within @rate
+ * milliseconds
+ */
+static void
+monitor_qapi_event_throttle(QAPIEvent event, int64_t rate)
+{
+    MonitorQAPIEventState *evstate;
+    assert(event < QAPI_EVENT_MAX);
+
+    evstate = &(monitor_qapi_event_state[event]);
+
+    trace_monitor_protocol_event_throttle(event, rate);
+    evstate->event = event;
+    assert(rate * SCALE_MS <= INT64_MAX);
+    evstate->rate = rate * SCALE_MS;
+    evstate->last = 0;
+    evstate->data = NULL;
+    evstate->timer = timer_new(QEMU_CLOCK_REALTIME,
+                               SCALE_MS,
+                               monitor_qapi_event_handler,
+                               evstate);
+}
+
+static void monitor_qapi_event_init(void)
+{
+    /* Limit guest-triggerable events to 1 per second */
+    monitor_qapi_event_throttle(QAPI_EVENT_RTC_CHANGE, 1000);
+    monitor_qapi_event_throttle(QAPI_EVENT_WATCHDOG, 1000);
+    monitor_qapi_event_throttle(QAPI_EVENT_BALLOON_CHANGE, 1000);
+    monitor_qapi_event_throttle(QAPI_EVENT_QUORUM_REPORT_BAD, 1000);
+    monitor_qapi_event_throttle(QAPI_EVENT_QUORUM_FAILURE, 1000);
+    monitor_qapi_event_throttle(QAPI_EVENT_VSERPORT_CHANGE, 1000);
+
+    qmp_event_set_func_emit(monitor_qapi_event_queue);
+}
+
+static void qmp_capabilities(QDict *params, QObject **ret_data, Error **errp)
+{
+    cur_mon->qmp.in_command_mode = true;
+}
+
+static void handle_hmp_command(Monitor *mon, const char *cmdline);
+
+static void monitor_data_init(Monitor *mon)
+{
+    memset(mon, 0, sizeof(Monitor));
+    qemu_mutex_init(&mon->out_lock);
+    mon->outbuf = qstring_new();
+    /* Use *mon_cmds by default. */
+    mon->cmd_table = mon_cmds;
+}
+
+static void monitor_data_destroy(Monitor *mon)
+{
+    QDECREF(mon->outbuf);
+    qemu_mutex_destroy(&mon->out_lock);
+}
+
+char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
+                                int64_t cpu_index, Error **errp)
+{
+    char *output = NULL;
+    Monitor *old_mon, hmp;
+
+    monitor_data_init(&hmp);
+    hmp.skip_flush = true;
+
+    old_mon = cur_mon;
+    cur_mon = &hmp;
+
+    if (has_cpu_index) {
+        int ret = monitor_set_cpu(cpu_index);
+        if (ret < 0) {
+            cur_mon = old_mon;
+            error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
+                       "a CPU number");
+            goto out;
+        }
+    }
+
+    handle_hmp_command(&hmp, command_line);
+    cur_mon = old_mon;
+
+    qemu_mutex_lock(&hmp.out_lock);
+    if (qstring_get_length(hmp.outbuf) > 0) {
+        output = g_strdup(qstring_get_str(hmp.outbuf));
+    } else {
+        output = g_strdup("");
+    }
+    qemu_mutex_unlock(&hmp.out_lock);
+
+out:
+    monitor_data_destroy(&hmp);
+    return output;
+}
+
+static int compare_cmd(const char *name, const char *list)
+{
+    const char *p, *pstart;
+    int len;
+    len = strlen(name);
+    p = list;
+    for(;;) {
+        pstart = p;
+        p = strchr(p, '|');
+        if (!p)
+            p = pstart + strlen(pstart);
+        if ((p - pstart) == len && !memcmp(pstart, name, len))
+            return 1;
+        if (*p == '\0')
+            break;
+        p++;
+    }
+    return 0;
+}
+
+static int get_str(char *buf, int buf_size, const char **pp)
+{
+    const char *p;
+    char *q;
+    int c;
+
+    q = buf;
+    p = *pp;
+    while (qemu_isspace(*p)) {
+        p++;
+    }
+    if (*p == '\0') {
+    fail:
+        *q = '\0';
+        *pp = p;
+        return -1;
+    }
+    if (*p == '\"') {
+        p++;
+        while (*p != '\0' && *p != '\"') {
+            if (*p == '\\') {
+                p++;
+                c = *p++;
+                switch (c) {
+                case 'n':
+                    c = '\n';
+                    break;
+                case 'r':
+                    c = '\r';
+                    break;
+                case '\\':
+                case '\'':
+                case '\"':
+                    break;
+                default:
+                    qemu_printf("unsupported escape code: '\\%c'\n", c);
+                    goto fail;
+                }
+                if ((q - buf) < buf_size - 1) {
+                    *q++ = c;
+                }
+            } else {
+                if ((q - buf) < buf_size - 1) {
+                    *q++ = *p;
+                }
+                p++;
+            }
+        }
+        if (*p != '\"') {
+            qemu_printf("unterminated string\n");
+            goto fail;
+        }
+        p++;
+    } else {
+        while (*p != '\0' && !qemu_isspace(*p)) {
+            if ((q - buf) < buf_size - 1) {
+                *q++ = *p;
+            }
+            p++;
+        }
+    }
+    *q = '\0';
+    *pp = p;
+    return 0;
+}
+
+#define MAX_ARGS 16
+
+static void free_cmdline_args(char **args, int nb_args)
+{
+    int i;
+
+    assert(nb_args <= MAX_ARGS);
+
+    for (i = 0; i < nb_args; i++) {
+        g_free(args[i]);
+    }
+
+}
+
+/*
+ * Parse the command line to get valid args.
+ * @cmdline: command line to be parsed.
+ * @pnb_args: location to store the number of args, must NOT be NULL.
+ * @args: location to store the args, which should be freed by caller, must
+ *        NOT be NULL.
+ *
+ * Returns 0 on success, negative on failure.
+ *
+ * NOTE: this parser is an approximate form of the real command parser. Number
+ *       of args have a limit of MAX_ARGS. If cmdline contains more, it will
+ *       return with failure.
+ */
+static int parse_cmdline(const char *cmdline,
+                         int *pnb_args, char **args)
+{
+    const char *p;
+    int nb_args, ret;
+    char buf[1024];
+
+    p = cmdline;
+    nb_args = 0;
+    for (;;) {
+        while (qemu_isspace(*p)) {
+            p++;
+        }
+        if (*p == '\0') {
+            break;
+        }
+        if (nb_args >= MAX_ARGS) {
+            goto fail;
+        }
+        ret = get_str(buf, sizeof(buf), &p);
+        if (ret < 0) {
+            goto fail;
+        }
+        args[nb_args] = g_strdup(buf);
+        nb_args++;
+    }
+    *pnb_args = nb_args;
+    return 0;
+
+ fail:
+    free_cmdline_args(args, nb_args);
+    return -1;
+}
+
+static void help_cmd_dump_one(Monitor *mon,
+                              const mon_cmd_t *cmd,
+                              char **prefix_args,
+                              int prefix_args_nb)
+{
+    int i;
+
+    for (i = 0; i < prefix_args_nb; i++) {
+        monitor_printf(mon, "%s ", prefix_args[i]);
+    }
+    monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
+}
+
+/* @args[@arg_index] is the valid command need to find in @cmds */
+static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
+                          char **args, int nb_args, int arg_index)
+{
+    const mon_cmd_t *cmd;
+
+    /* No valid arg need to compare with, dump all in *cmds */
+    if (arg_index >= nb_args) {
+        for (cmd = cmds; cmd->name != NULL; cmd++) {
+            help_cmd_dump_one(mon, cmd, args, arg_index);
+        }
+        return;
+    }
+
+    /* Find one entry to dump */
+    for (cmd = cmds; cmd->name != NULL; cmd++) {
+        if (compare_cmd(args[arg_index], cmd->name)) {
+            if (cmd->sub_table) {
+                /* continue with next arg */
+                help_cmd_dump(mon, cmd->sub_table,
+                              args, nb_args, arg_index + 1);
+            } else {
+                help_cmd_dump_one(mon, cmd, args, arg_index);
+            }
+            break;
+        }
+    }
+}
+
+static void help_cmd(Monitor *mon, const char *name)
+{
+    char *args[MAX_ARGS];
+    int nb_args = 0;
+
+    /* 1. parse user input */
+    if (name) {
+        /* special case for log, directly dump and return */
+        if (!strcmp(name, "log")) {
+            const QEMULogItem *item;
+            monitor_printf(mon, "Log items (comma separated):\n");
+            monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
+            for (item = qemu_log_items; item->mask != 0; item++) {
+                monitor_printf(mon, "%-10s %s\n", item->name, item->help);
+            }
+            return;
+        }
+
+        if (parse_cmdline(name, &nb_args, args) < 0) {
+            return;
+        }
+    }
+
+    /* 2. dump the contents according to parsed args */
+    help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
+
+    free_cmdline_args(args, nb_args);
+}
+
+static void do_help_cmd(Monitor *mon, const QDict *qdict)
+{
+    help_cmd(mon, qdict_get_try_str(qdict, "name"));
+}
+
+static void hmp_trace_event(Monitor *mon, const QDict *qdict)
+{
+    const char *tp_name = qdict_get_str(qdict, "name");
+    bool new_state = qdict_get_bool(qdict, "option");
+    Error *local_err = NULL;
+
+    qmp_trace_event_set_state(tp_name, new_state, true, true, &local_err);
+    if (local_err) {
+        error_report_err(local_err);
+    }
+}
+
+#ifdef CONFIG_TRACE_SIMPLE
+static void hmp_trace_file(Monitor *mon, const QDict *qdict)
+{
+    const char *op = qdict_get_try_str(qdict, "op");
+    const char *arg = qdict_get_try_str(qdict, "arg");
+
+    if (!op) {
+        st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
+    } else if (!strcmp(op, "on")) {
+        st_set_trace_file_enabled(true);
+    } else if (!strcmp(op, "off")) {
+        st_set_trace_file_enabled(false);
+    } else if (!strcmp(op, "flush")) {
+        st_flush_trace_buffer();
+    } else if (!strcmp(op, "set")) {
+        if (arg) {
+            st_set_trace_file(arg);
+        }
+    } else {
+        monitor_printf(mon, "unexpected argument \"%s\"\n", op);
+        help_cmd(mon, "trace-file");
+    }
+}
+#endif
+
+static void hmp_info_help(Monitor *mon, const QDict *qdict)
+{
+    help_cmd(mon, "info");
+}
+
+CommandInfoList *qmp_query_commands(Error **errp)
+{
+    CommandInfoList *info, *cmd_list = NULL;
+    const mon_cmd_t *cmd;
+
+    for (cmd = qmp_cmds; cmd->name != NULL; cmd++) {
+        info = g_malloc0(sizeof(*info));
+        info->value = g_malloc0(sizeof(*info->value));
+        info->value->name = g_strdup(cmd->name);
+
+        info->next = cmd_list;
+        cmd_list = info;
+    }
+
+    return cmd_list;
+}
+
+EventInfoList *qmp_query_events(Error **errp)
+{
+    EventInfoList *info, *ev_list = NULL;
+    QAPIEvent e;
+
+    for (e = 0 ; e < QAPI_EVENT_MAX ; e++) {
+        const char *event_name = QAPIEvent_lookup[e];
+        assert(event_name != NULL);
+        info = g_malloc0(sizeof(*info));
+        info->value = g_malloc0(sizeof(*info->value));
+        info->value->name = g_strdup(event_name);
+
+        info->next = ev_list;
+        ev_list = info;
+    }
+
+    return ev_list;
+}
+
+/* set the current CPU defined by the user */
+int monitor_set_cpu(int cpu_index)
+{
+    CPUState *cpu;
+
+    cpu = qemu_get_cpu(cpu_index);
+    if (cpu == NULL) {
+        return -1;
+    }
+    cur_mon->mon_cpu = cpu;
+    return 0;
+}
+
+static CPUState *mon_get_cpu(void)
+{
+    if (!cur_mon->mon_cpu) {
+        monitor_set_cpu(0);
+    }
+    cpu_synchronize_state(cur_mon->mon_cpu);
+    return cur_mon->mon_cpu;
+}
+
+static CPUArchState *mon_get_cpu_env(void)
+{
+    return mon_get_cpu()->env_ptr;
+}
+
+int monitor_get_cpu_index(void)
+{
+    return mon_get_cpu()->cpu_index;
+}
+
+static void hmp_info_registers(Monitor *mon, const QDict *qdict)
+{
+    cpu_dump_state(mon_get_cpu(), (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
+}
+
+static void hmp_info_jit(Monitor *mon, const QDict *qdict)
+{
+    dump_exec_info((FILE *)mon, monitor_fprintf);
+    dump_drift_info((FILE *)mon, monitor_fprintf);
+}
+
+static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
+{
+    dump_opcount_info((FILE *)mon, monitor_fprintf);
+}
+
+static void hmp_info_history(Monitor *mon, const QDict *qdict)
+{
+    int i;
+    const char *str;
+
+    if (!mon->rs)
+        return;
+    i = 0;
+    for(;;) {
+        str = readline_get_history(mon->rs, i);
+        if (!str)
+            break;
+        monitor_printf(mon, "%d: '%s'\n", i, str);
+        i++;
+    }
+}
+
+static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
+{
+    cpu_dump_statistics(mon_get_cpu(), (FILE *)mon, &monitor_fprintf, 0);
+}
+
+static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
+{
+    TraceEventInfoList *events = qmp_trace_event_get_state("*", NULL);
+    TraceEventInfoList *elem;
+
+    for (elem = events; elem != NULL; elem = elem->next) {
+        monitor_printf(mon, "%s : state %u\n",
+                       elem->value->name,
+                       elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
+    }
+    qapi_free_TraceEventInfoList(events);
+}
+
+void qmp_client_migrate_info(const char *protocol, const char *hostname,
+                             bool has_port, int64_t port,
+                             bool has_tls_port, int64_t tls_port,
+                             bool has_cert_subject, const char *cert_subject,
+                             Error **errp)
+{
+    if (strcmp(protocol, "spice") == 0) {
+        if (!qemu_using_spice(errp)) {
+            return;
+        }
+
+        if (!has_port && !has_tls_port) {
+            error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
+            return;
+        }
+
+        if (qemu_spice_migrate_info(hostname,
+                                    has_port ? port : -1,
+                                    has_tls_port ? tls_port : -1,
+                                    cert_subject)) {
+            error_setg(errp, QERR_UNDEFINED_ERROR);
+            return;
+        }
+        return;
+    }
+
+    error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
+}
+
+static void hmp_logfile(Monitor *mon, const QDict *qdict)
+{
+    qemu_set_log_filename(qdict_get_str(qdict, "filename"));
+}
+
+static void hmp_log(Monitor *mon, const QDict *qdict)
+{
+    int mask;
+    const char *items = qdict_get_str(qdict, "items");
+
+    if (!strcmp(items, "none")) {
+        mask = 0;
+    } else {
+        mask = qemu_str_to_log_mask(items);
+        if (!mask) {
+            help_cmd(mon, "log");
+            return;
+        }
+    }
+    qemu_set_log(mask);
+}
+
+static void hmp_singlestep(Monitor *mon, const QDict *qdict)
+{
+    const char *option = qdict_get_try_str(qdict, "option");
+    if (!option || !strcmp(option, "on")) {
+        singlestep = 1;
+    } else if (!strcmp(option, "off")) {
+        singlestep = 0;
+    } else {
+        monitor_printf(mon, "unexpected option %s\n", option);
+    }
+}
+
+static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
+{
+    const char *device = qdict_get_try_str(qdict, "device");
+    if (!device)
+        device = "tcp::" DEFAULT_GDBSTUB_PORT;
+    if (gdbserver_start(device) < 0) {
+        monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
+                       device);
+    } else if (strcmp(device, "none") == 0) {
+        monitor_printf(mon, "Disabled gdbserver\n");
+    } else {
+        monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
+                       device);
+    }
+}
+
+static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
+{
+    const char *action = qdict_get_str(qdict, "action");
+    if (select_watchdog_action(action) == -1) {
+        monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
+    }
+}
+
+static void monitor_printc(Monitor *mon, int c)
+{
+    monitor_printf(mon, "'");
+    switch(c) {
+    case '\'':
+        monitor_printf(mon, "\\'");
+        break;
+    case '\\':
+        monitor_printf(mon, "\\\\");
+        break;
+    case '\n':
+        monitor_printf(mon, "\\n");
+        break;
+    case '\r':
+        monitor_printf(mon, "\\r");
+        break;
+    default:
+        if (c >= 32 && c <= 126) {
+            monitor_printf(mon, "%c", c);
+        } else {
+            monitor_printf(mon, "\\x%02x", c);
+        }
+        break;
+    }
+    monitor_printf(mon, "'");
+}
+
+static void memory_dump(Monitor *mon, int count, int format, int wsize,
+                        hwaddr addr, int is_physical)
+{
+    int l, line_size, i, max_digits, len;
+    uint8_t buf[16];
+    uint64_t v;
+
+    if (format == 'i') {
+        int flags = 0;
+#ifdef TARGET_I386
+        CPUArchState *env = mon_get_cpu_env();
+        if (wsize == 2) {
+            flags = 1;
+        } else if (wsize == 4) {
+            flags = 0;
+        } else {
+            /* as default we use the current CS size */
+            flags = 0;
+            if (env) {
+#ifdef TARGET_X86_64
+                if ((env->efer & MSR_EFER_LMA) &&
+                    (env->segs[R_CS].flags & DESC_L_MASK))
+                    flags = 2;
+                else
+#endif
+                if (!(env->segs[R_CS].flags & DESC_B_MASK))
+                    flags = 1;
+            }
+        }
+#endif
+#ifdef TARGET_PPC
+        CPUArchState *env = mon_get_cpu_env();
+        flags = msr_le << 16;
+        flags |= env->bfd_mach;
+#endif
+        monitor_disas(mon, mon_get_cpu(), addr, count, is_physical, flags);
+        return;
+    }
+
+    len = wsize * count;
+    if (wsize == 1)
+        line_size = 8;
+    else
+        line_size = 16;
+    max_digits = 0;
+
+    switch(format) {
+    case 'o':
+        max_digits = (wsize * 8 + 2) / 3;
+        break;
+    default:
+    case 'x':
+        max_digits = (wsize * 8) / 4;
+        break;
+    case 'u':
+    case 'd':
+        max_digits = (wsize * 8 * 10 + 32) / 33;
+        break;
+    case 'c':
+        wsize = 1;
+        break;
+    }
+
+    while (len > 0) {
+        if (is_physical)
+            monitor_printf(mon, TARGET_FMT_plx ":", addr);
+        else
+            monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
+        l = len;
+        if (l > line_size)
+            l = line_size;
+        if (is_physical) {
+            cpu_physical_memory_read(addr, buf, l);
+        } else {
+            if (cpu_memory_rw_debug(mon_get_cpu(), addr, buf, l, 0) < 0) {
+                monitor_printf(mon, " Cannot access memory\n");
+                break;
+            }
+        }
+        i = 0;
+        while (i < l) {
+            switch(wsize) {
+            default:
+            case 1:
+                v = ldub_p(buf + i);
+                break;
+            case 2:
+                v = lduw_p(buf + i);
+                break;
+            case 4:
+                v = (uint32_t)ldl_p(buf + i);
+                break;
+            case 8:
+                v = ldq_p(buf + i);
+                break;
+            }
+            monitor_printf(mon, " ");
+            switch(format) {
+            case 'o':
+                monitor_printf(mon, "%#*" PRIo64, max_digits, v);
+                break;
+            case 'x':
+                monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
+                break;
+            case 'u':
+                monitor_printf(mon, "%*" PRIu64, max_digits, v);
+                break;
+            case 'd':
+                monitor_printf(mon, "%*" PRId64, max_digits, v);
+                break;
+            case 'c':
+                monitor_printc(mon, v);
+                break;
+            }
+            i += wsize;
+        }
+        monitor_printf(mon, "\n");
+        addr += l;
+        len -= l;
+    }
+}
+
+static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
+{
+    int count = qdict_get_int(qdict, "count");
+    int format = qdict_get_int(qdict, "format");
+    int size = qdict_get_int(qdict, "size");
+    target_long addr = qdict_get_int(qdict, "addr");
+
+    memory_dump(mon, count, format, size, addr, 0);
+}
+
+static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
+{
+    int count = qdict_get_int(qdict, "count");
+    int format = qdict_get_int(qdict, "format");
+    int size = qdict_get_int(qdict, "size");
+    hwaddr addr = qdict_get_int(qdict, "addr");
+
+    memory_dump(mon, count, format, size, addr, 1);
+}
+
+static void do_print(Monitor *mon, const QDict *qdict)
+{
+    int format = qdict_get_int(qdict, "format");
+    hwaddr val = qdict_get_int(qdict, "val");
+
+    switch(format) {
+    case 'o':
+        monitor_printf(mon, "%#" HWADDR_PRIo, val);
+        break;
+    case 'x':
+        monitor_printf(mon, "%#" HWADDR_PRIx, val);
+        break;
+    case 'u':
+        monitor_printf(mon, "%" HWADDR_PRIu, val);
+        break;
+    default:
+    case 'd':
+        monitor_printf(mon, "%" HWADDR_PRId, val);
+        break;
+    case 'c':
+        monitor_printc(mon, val);
+        break;
+    }
+    monitor_printf(mon, "\n");
+}
+
+static void hmp_sum(Monitor *mon, const QDict *qdict)
+{
+    uint32_t addr;
+    uint16_t sum;
+    uint32_t start = qdict_get_int(qdict, "start");
+    uint32_t size = qdict_get_int(qdict, "size");
+
+    sum = 0;
+    for(addr = start; addr < (start + size); addr++) {
+        uint8_t val = address_space_ldub(&address_space_memory, addr,
+                                         MEMTXATTRS_UNSPECIFIED, NULL);
+        /* BSD sum algorithm ('sum' Unix command) */
+        sum = (sum >> 1) | (sum << 15);
+        sum += val;
+    }
+    monitor_printf(mon, "%05d\n", sum);
+}
+
+static int mouse_button_state;
+
+static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
+{
+    int dx, dy, dz, button;
+    const char *dx_str = qdict_get_str(qdict, "dx_str");
+    const char *dy_str = qdict_get_str(qdict, "dy_str");
+    const char *dz_str = qdict_get_try_str(qdict, "dz_str");
+
+    dx = strtol(dx_str, NULL, 0);
+    dy = strtol(dy_str, NULL, 0);
+    qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
+    qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
+
+    if (dz_str) {
+        dz = strtol(dz_str, NULL, 0);
+        if (dz != 0) {
+            button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
+            qemu_input_queue_btn(NULL, button, true);
+            qemu_input_event_sync();
+            qemu_input_queue_btn(NULL, button, false);
+        }
+    }
+    qemu_input_event_sync();
+}
+
+static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
+{
+    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+        [INPUT_BUTTON_LEFT]       = MOUSE_EVENT_LBUTTON,
+        [INPUT_BUTTON_MIDDLE]     = MOUSE_EVENT_MBUTTON,
+        [INPUT_BUTTON_RIGHT]      = MOUSE_EVENT_RBUTTON,
+    };
+    int button_state = qdict_get_int(qdict, "button_state");
+
+    if (mouse_button_state == button_state) {
+        return;
+    }
+    qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
+    qemu_input_event_sync();
+    mouse_button_state = button_state;
+}
+
+static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
+{
+    int size = qdict_get_int(qdict, "size");
+    int addr = qdict_get_int(qdict, "addr");
+    int has_index = qdict_haskey(qdict, "index");
+    uint32_t val;
+    int suffix;
+
+    if (has_index) {
+        int index = qdict_get_int(qdict, "index");
+        cpu_outb(addr & IOPORTS_MASK, index & 0xff);
+        addr++;
+    }
+    addr &= 0xffff;
+
+    switch(size) {
+    default:
+    case 1:
+        val = cpu_inb(addr);
+        suffix = 'b';
+        break;
+    case 2:
+        val = cpu_inw(addr);
+        suffix = 'w';
+        break;
+    case 4:
+        val = cpu_inl(addr);
+        suffix = 'l';
+        break;
+    }
+    monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
+                   suffix, addr, size * 2, val);
+}
+
+static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
+{
+    int size = qdict_get_int(qdict, "size");
+    int addr = qdict_get_int(qdict, "addr");
+    int val = qdict_get_int(qdict, "val");
+
+    addr &= IOPORTS_MASK;
+
+    switch (size) {
+    default:
+    case 1:
+        cpu_outb(addr, val);
+        break;
+    case 2:
+        cpu_outw(addr, val);
+        break;
+    case 4:
+        cpu_outl(addr, val);
+        break;
+    }
+}
+
+static void hmp_boot_set(Monitor *mon, const QDict *qdict)
+{
+    Error *local_err = NULL;
+    const char *bootdevice = qdict_get_str(qdict, "bootdevice");
+
+    qemu_boot_set(bootdevice, &local_err);
+    if (local_err) {
+        monitor_printf(mon, "%s\n", error_get_pretty(local_err));
+        error_free(local_err);
+    } else {
+        monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
+    }
+}
+
+#if defined(TARGET_I386)
+static void print_pte(Monitor *mon, hwaddr addr,
+                      hwaddr pte,
+                      hwaddr mask)
+{
+#ifdef TARGET_X86_64
+    if (addr & (1ULL << 47)) {
+        addr |= -1LL << 48;
+    }
+#endif
+    monitor_printf(mon, TARGET_FMT_plx ": " TARGET_FMT_plx
+                   " %c%c%c%c%c%c%c%c%c\n",
+                   addr,
+                   pte & mask,
+                   pte & PG_NX_MASK ? 'X' : '-',
+                   pte & PG_GLOBAL_MASK ? 'G' : '-',
+                   pte & PG_PSE_MASK ? 'P' : '-',
+                   pte & PG_DIRTY_MASK ? 'D' : '-',
+                   pte & PG_ACCESSED_MASK ? 'A' : '-',
+                   pte & PG_PCD_MASK ? 'C' : '-',
+                   pte & PG_PWT_MASK ? 'T' : '-',
+                   pte & PG_USER_MASK ? 'U' : '-',
+                   pte & PG_RW_MASK ? 'W' : '-');
+}
+
+static void tlb_info_32(Monitor *mon, CPUArchState *env)
+{
+    unsigned int l1, l2;
+    uint32_t pgd, pde, pte;
+
+    pgd = env->cr[3] & ~0xfff;
+    for(l1 = 0; l1 < 1024; l1++) {
+        cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
+        pde = le32_to_cpu(pde);
+        if (pde & PG_PRESENT_MASK) {
+            if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
+                /* 4M pages */
+                print_pte(mon, (l1 << 22), pde, ~((1 << 21) - 1));
+            } else {
+                for(l2 = 0; l2 < 1024; l2++) {
+                    cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
+                    pte = le32_to_cpu(pte);
+                    if (pte & PG_PRESENT_MASK) {
+                        print_pte(mon, (l1 << 22) + (l2 << 12),
+                                  pte & ~PG_PSE_MASK,
+                                  ~0xfff);
+                    }
+                }
+            }
+        }
+    }
+}
+
+static void tlb_info_pae32(Monitor *mon, CPUArchState *env)
+{
+    unsigned int l1, l2, l3;
+    uint64_t pdpe, pde, pte;
+    uint64_t pdp_addr, pd_addr, pt_addr;
+
+    pdp_addr = env->cr[3] & ~0x1f;
+    for (l1 = 0; l1 < 4; l1++) {
+        cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
+        pdpe = le64_to_cpu(pdpe);
+        if (pdpe & PG_PRESENT_MASK) {
+            pd_addr = pdpe & 0x3fffffffff000ULL;
+            for (l2 = 0; l2 < 512; l2++) {
+                cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
+                pde = le64_to_cpu(pde);
+                if (pde & PG_PRESENT_MASK) {
+                    if (pde & PG_PSE_MASK) {
+                        /* 2M pages with PAE, CR4.PSE is ignored */
+                        print_pte(mon, (l1 << 30 ) + (l2 << 21), pde,
+                                  ~((hwaddr)(1 << 20) - 1));
+                    } else {
+                        pt_addr = pde & 0x3fffffffff000ULL;
+                        for (l3 = 0; l3 < 512; l3++) {
+                            cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
+                            pte = le64_to_cpu(pte);
+                            if (pte & PG_PRESENT_MASK) {
+                                print_pte(mon, (l1 << 30 ) + (l2 << 21)
+                                          + (l3 << 12),
+                                          pte & ~PG_PSE_MASK,
+                                          ~(hwaddr)0xfff);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+#ifdef TARGET_X86_64
+static void tlb_info_64(Monitor *mon, CPUArchState *env)
+{
+    uint64_t l1, l2, l3, l4;
+    uint64_t pml4e, pdpe, pde, pte;
+    uint64_t pml4_addr, pdp_addr, pd_addr, pt_addr;
+
+    pml4_addr = env->cr[3] & 0x3fffffffff000ULL;
+    for (l1 = 0; l1 < 512; l1++) {
+        cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
+        pml4e = le64_to_cpu(pml4e);
+        if (pml4e & PG_PRESENT_MASK) {
+            pdp_addr = pml4e & 0x3fffffffff000ULL;
+            for (l2 = 0; l2 < 512; l2++) {
+                cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
+                pdpe = le64_to_cpu(pdpe);
+                if (pdpe & PG_PRESENT_MASK) {
+                    if (pdpe & PG_PSE_MASK) {
+                        /* 1G pages, CR4.PSE is ignored */
+                        print_pte(mon, (l1 << 39) + (l2 << 30), pdpe,
+                                  0x3ffffc0000000ULL);
+                    } else {
+                        pd_addr = pdpe & 0x3fffffffff000ULL;
+                        for (l3 = 0; l3 < 512; l3++) {
+                            cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
+                            pde = le64_to_cpu(pde);
+                            if (pde & PG_PRESENT_MASK) {
+                                if (pde & PG_PSE_MASK) {
+                                    /* 2M pages, CR4.PSE is ignored */
+                                    print_pte(mon, (l1 << 39) + (l2 << 30) +
+                                              (l3 << 21), pde,
+                                              0x3ffffffe00000ULL);
+                                } else {
+                                    pt_addr = pde & 0x3fffffffff000ULL;
+                                    for (l4 = 0; l4 < 512; l4++) {
+                                        cpu_physical_memory_read(pt_addr
+                                                                 + l4 * 8,
+                                                                 &pte, 8);
+                                        pte = le64_to_cpu(pte);
+                                        if (pte & PG_PRESENT_MASK) {
+                                            print_pte(mon, (l1 << 39) +
+                                                      (l2 << 30) +
+                                                      (l3 << 21) + (l4 << 12),
+                                                      pte & ~PG_PSE_MASK,
+                                                      0x3fffffffff000ULL);
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+#endif
+
+static void hmp_info_tlb(Monitor *mon, const QDict *qdict)
+{
+    CPUArchState *env;
+
+    env = mon_get_cpu_env();
+
+    if (!(env->cr[0] & CR0_PG_MASK)) {
+        monitor_printf(mon, "PG disabled\n");
+        return;
+    }
+    if (env->cr[4] & CR4_PAE_MASK) {
+#ifdef TARGET_X86_64
+        if (env->hflags & HF_LMA_MASK) {
+            tlb_info_64(mon, env);
+        } else
+#endif
+        {
+            tlb_info_pae32(mon, env);
+        }
+    } else {
+        tlb_info_32(mon, env);
+    }
+}
+
+static void mem_print(Monitor *mon, hwaddr *pstart,
+                      int *plast_prot,
+                      hwaddr end, int prot)
+{
+    int prot1;
+    prot1 = *plast_prot;
+    if (prot != prot1) {
+        if (*pstart != -1) {
+            monitor_printf(mon, TARGET_FMT_plx "-" TARGET_FMT_plx " "
+                           TARGET_FMT_plx " %c%c%c\n",
+                           *pstart, end, end - *pstart,
+                           prot1 & PG_USER_MASK ? 'u' : '-',
+                           'r',
+                           prot1 & PG_RW_MASK ? 'w' : '-');
+        }
+        if (prot != 0)
+            *pstart = end;
+        else
+            *pstart = -1;
+        *plast_prot = prot;
+    }
+}
+
+static void mem_info_32(Monitor *mon, CPUArchState *env)
+{
+    unsigned int l1, l2;
+    int prot, last_prot;
+    uint32_t pgd, pde, pte;
+    hwaddr start, end;
+
+    pgd = env->cr[3] & ~0xfff;
+    last_prot = 0;
+    start = -1;
+    for(l1 = 0; l1 < 1024; l1++) {
+        cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
+        pde = le32_to_cpu(pde);
+        end = l1 << 22;
+        if (pde & PG_PRESENT_MASK) {
+            if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
+                prot = pde & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
+                mem_print(mon, &start, &last_prot, end, prot);
+            } else {
+                for(l2 = 0; l2 < 1024; l2++) {
+                    cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
+                    pte = le32_to_cpu(pte);
+                    end = (l1 << 22) + (l2 << 12);
+                    if (pte & PG_PRESENT_MASK) {
+                        prot = pte & pde &
+                            (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
+                    } else {
+                        prot = 0;
+                    }
+                    mem_print(mon, &start, &last_prot, end, prot);
+                }
+            }
+        } else {
+            prot = 0;
+            mem_print(mon, &start, &last_prot, end, prot);
+        }
+    }
+    /* Flush last range */
+    mem_print(mon, &start, &last_prot, (hwaddr)1 << 32, 0);
+}
+
+static void mem_info_pae32(Monitor *mon, CPUArchState *env)
+{
+    unsigned int l1, l2, l3;
+    int prot, last_prot;
+    uint64_t pdpe, pde, pte;
+    uint64_t pdp_addr, pd_addr, pt_addr;
+    hwaddr start, end;
+
+    pdp_addr = env->cr[3] & ~0x1f;
+    last_prot = 0;
+    start = -1;
+    for (l1 = 0; l1 < 4; l1++) {
+        cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
+        pdpe = le64_to_cpu(pdpe);
+        end = l1 << 30;
+        if (pdpe & PG_PRESENT_MASK) {
+            pd_addr = pdpe & 0x3fffffffff000ULL;
+            for (l2 = 0; l2 < 512; l2++) {
+                cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
+                pde = le64_to_cpu(pde);
+                end = (l1 << 30) + (l2 << 21);
+                if (pde & PG_PRESENT_MASK) {
+                    if (pde & PG_PSE_MASK) {
+                        prot = pde & (PG_USER_MASK | PG_RW_MASK |
+                                      PG_PRESENT_MASK);
+                        mem_print(mon, &start, &last_prot, end, prot);
+                    } else {
+                        pt_addr = pde & 0x3fffffffff000ULL;
+                        for (l3 = 0; l3 < 512; l3++) {
+                            cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
+                            pte = le64_to_cpu(pte);
+                            end = (l1 << 30) + (l2 << 21) + (l3 << 12);
+                            if (pte & PG_PRESENT_MASK) {
+                                prot = pte & pde & (PG_USER_MASK | PG_RW_MASK |
+                                                    PG_PRESENT_MASK);
+                            } else {
+                                prot = 0;
+                            }
+                            mem_print(mon, &start, &last_prot, end, prot);
+                        }
+                    }
+                } else {
+                    prot = 0;
+                    mem_print(mon, &start, &last_prot, end, prot);
+                }
+            }
+        } else {
+            prot = 0;
+            mem_print(mon, &start, &last_prot, end, prot);
+        }
+    }
+    /* Flush last range */
+    mem_print(mon, &start, &last_prot, (hwaddr)1 << 32, 0);
+}
+
+
+#ifdef TARGET_X86_64
+static void mem_info_64(Monitor *mon, CPUArchState *env)
+{
+    int prot, last_prot;
+    uint64_t l1, l2, l3, l4;
+    uint64_t pml4e, pdpe, pde, pte;
+    uint64_t pml4_addr, pdp_addr, pd_addr, pt_addr, start, end;
+
+    pml4_addr = env->cr[3] & 0x3fffffffff000ULL;
+    last_prot = 0;
+    start = -1;
+    for (l1 = 0; l1 < 512; l1++) {
+        cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
+        pml4e = le64_to_cpu(pml4e);
+        end = l1 << 39;
+        if (pml4e & PG_PRESENT_MASK) {
+            pdp_addr = pml4e & 0x3fffffffff000ULL;
+            for (l2 = 0; l2 < 512; l2++) {
+                cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
+                pdpe = le64_to_cpu(pdpe);
+                end = (l1 << 39) + (l2 << 30);
+                if (pdpe & PG_PRESENT_MASK) {
+                    if (pdpe & PG_PSE_MASK) {
+                        prot = pdpe & (PG_USER_MASK | PG_RW_MASK |
+                                       PG_PRESENT_MASK);
+                        prot &= pml4e;
+                        mem_print(mon, &start, &last_prot, end, prot);
+                    } else {
+                        pd_addr = pdpe & 0x3fffffffff000ULL;
+                        for (l3 = 0; l3 < 512; l3++) {
+                            cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
+                            pde = le64_to_cpu(pde);
+                            end = (l1 << 39) + (l2 << 30) + (l3 << 21);
+                            if (pde & PG_PRESENT_MASK) {
+                                if (pde & PG_PSE_MASK) {
+                                    prot = pde & (PG_USER_MASK | PG_RW_MASK |
+                                                  PG_PRESENT_MASK);
+                                    prot &= pml4e & pdpe;
+                                    mem_print(mon, &start, &last_prot, end, prot);
+                                } else {
+                                    pt_addr = pde & 0x3fffffffff000ULL;
+                                    for (l4 = 0; l4 < 512; l4++) {
+                                        cpu_physical_memory_read(pt_addr
+                                                                 + l4 * 8,
+                                                                 &pte, 8);
+                                        pte = le64_to_cpu(pte);
+                                        end = (l1 << 39) + (l2 << 30) +
+                                            (l3 << 21) + (l4 << 12);
+                                        if (pte & PG_PRESENT_MASK) {
+                                            prot = pte & (PG_USER_MASK | PG_RW_MASK |
+                                                          PG_PRESENT_MASK);
+                                            prot &= pml4e & pdpe & pde;
+                                        } else {
+                                            prot = 0;
+                                        }
+                                        mem_print(mon, &start, &last_prot, end, prot);
+                                    }
+                                }
+                            } else {
+                                prot = 0;
+                                mem_print(mon, &start, &last_prot, end, prot);
+                            }
+                        }
+                    }
+                } else {
+                    prot = 0;
+                    mem_print(mon, &start, &last_prot, end, prot);
+                }
+            }
+        } else {
+            prot = 0;
+            mem_print(mon, &start, &last_prot, end, prot);
+        }
+    }
+    /* Flush last range */
+    mem_print(mon, &start, &last_prot, (hwaddr)1 << 48, 0);
+}
+#endif
+
+static void hmp_info_mem(Monitor *mon, const QDict *qdict)
+{
+    CPUArchState *env;
+
+    env = mon_get_cpu_env();
+
+    if (!(env->cr[0] & CR0_PG_MASK)) {
+        monitor_printf(mon, "PG disabled\n");
+        return;
+    }
+    if (env->cr[4] & CR4_PAE_MASK) {
+#ifdef TARGET_X86_64
+        if (env->hflags & HF_LMA_MASK) {
+            mem_info_64(mon, env);
+        } else
+#endif
+        {
+            mem_info_pae32(mon, env);
+        }
+    } else {
+        mem_info_32(mon, env);
+    }
+}
+#endif
+
+#if defined(TARGET_SH4)
+
+static void print_tlb(Monitor *mon, int idx, tlb_t *tlb)
+{
+    monitor_printf(mon, " tlb%i:\t"
+                   "asid=%hhu vpn=%x\tppn=%x\tsz=%hhu size=%u\t"
+                   "v=%hhu shared=%hhu cached=%hhu prot=%hhu "
+                   "dirty=%hhu writethrough=%hhu\n",
+                   idx,
+                   tlb->asid, tlb->vpn, tlb->ppn, tlb->sz, tlb->size,
+                   tlb->v, tlb->sh, tlb->c, tlb->pr,
+                   tlb->d, tlb->wt);
+}
+
+static void hmp_info_tlb(Monitor *mon, const QDict *qdict)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    int i;
+
+    monitor_printf (mon, "ITLB:\n");
+    for (i = 0 ; i < ITLB_SIZE ; i++)
+        print_tlb (mon, i, &env->itlb[i]);
+    monitor_printf (mon, "UTLB:\n");
+    for (i = 0 ; i < UTLB_SIZE ; i++)
+        print_tlb (mon, i, &env->utlb[i]);
+}
+
+#endif
+
+#if defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_XTENSA)
+static void hmp_info_tlb(Monitor *mon, const QDict *qdict)
+{
+    CPUArchState *env1 = mon_get_cpu_env();
+
+    dump_mmu((FILE*)mon, (fprintf_function)monitor_printf, env1);
+}
+#endif
+
+static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
+{
+    mtree_info((fprintf_function)monitor_printf, mon);
+}
+
+static void hmp_info_numa(Monitor *mon, const QDict *qdict)
+{
+    int i;
+    CPUState *cpu;
+    uint64_t *node_mem;
+
+    node_mem = g_new0(uint64_t, nb_numa_nodes);
+    query_numa_node_mem(node_mem);
+    monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
+    for (i = 0; i < nb_numa_nodes; i++) {
+        monitor_printf(mon, "node %d cpus:", i);
+        CPU_FOREACH(cpu) {
+            if (cpu->numa_node == i) {
+                monitor_printf(mon, " %d", cpu->cpu_index);
+            }
+        }
+        monitor_printf(mon, "\n");
+        monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
+                       node_mem[i] >> 20);
+    }
+    g_free(node_mem);
+}
+
+#ifdef CONFIG_PROFILER
+
+int64_t tcg_time;
+int64_t dev_time;
+
+static void hmp_info_profile(Monitor *mon, const QDict *qdict)
+{
+    monitor_printf(mon, "async time  %" PRId64 " (%0.3f)\n",
+                   dev_time, dev_time / (double)get_ticks_per_sec());
+    monitor_printf(mon, "qemu time   %" PRId64 " (%0.3f)\n",
+                   tcg_time, tcg_time / (double)get_ticks_per_sec());
+    tcg_time = 0;
+    dev_time = 0;
+}
+#else
+static void hmp_info_profile(Monitor *mon, const QDict *qdict)
+{
+    monitor_printf(mon, "Internal profiler not compiled\n");
+}
+#endif
+
+/* Capture support */
+static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
+
+static void hmp_info_capture(Monitor *mon, const QDict *qdict)
+{
+    int i;
+    CaptureState *s;
+
+    for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
+        monitor_printf(mon, "[%d]: ", i);
+        s->ops.info (s->opaque);
+    }
+}
+
+static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
+{
+    int i;
+    int n = qdict_get_int(qdict, "n");
+    CaptureState *s;
+
+    for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
+        if (i == n) {
+            s->ops.destroy (s->opaque);
+            QLIST_REMOVE (s, entries);
+            g_free (s);
+            return;
+        }
+    }
+}
+
+static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
+{
+    const char *path = qdict_get_str(qdict, "path");
+    int has_freq = qdict_haskey(qdict, "freq");
+    int freq = qdict_get_try_int(qdict, "freq", -1);
+    int has_bits = qdict_haskey(qdict, "bits");
+    int bits = qdict_get_try_int(qdict, "bits", -1);
+    int has_channels = qdict_haskey(qdict, "nchannels");
+    int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
+    CaptureState *s;
+
+    s = g_malloc0 (sizeof (*s));
+
+    freq = has_freq ? freq : 44100;
+    bits = has_bits ? bits : 16;
+    nchannels = has_channels ? nchannels : 2;
+
+    if (wav_start_capture (s, path, freq, bits, nchannels)) {
+        monitor_printf(mon, "Failed to add wave capture\n");
+        g_free (s);
+        return;
+    }
+    QLIST_INSERT_HEAD (&capture_head, s, entries);
+}
+
+static qemu_acl *find_acl(Monitor *mon, const char *name)
+{
+    qemu_acl *acl = qemu_acl_find(name);
+
+    if (!acl) {
+        monitor_printf(mon, "acl: unknown list '%s'\n", name);
+    }
+    return acl;
+}
+
+static void hmp_acl_show(Monitor *mon, const QDict *qdict)
+{
+    const char *aclname = qdict_get_str(qdict, "aclname");
+    qemu_acl *acl = find_acl(mon, aclname);
+    qemu_acl_entry *entry;
+    int i = 0;
+
+    if (acl) {
+        monitor_printf(mon, "policy: %s\n",
+                       acl->defaultDeny ? "deny" : "allow");
+        QTAILQ_FOREACH(entry, &acl->entries, next) {
+            i++;
+            monitor_printf(mon, "%d: %s %s\n", i,
+                           entry->deny ? "deny" : "allow", entry->match);
+        }
+    }
+}
+
+static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
+{
+    const char *aclname = qdict_get_str(qdict, "aclname");
+    qemu_acl *acl = find_acl(mon, aclname);
+
+    if (acl) {
+        qemu_acl_reset(acl);
+        monitor_printf(mon, "acl: removed all rules\n");
+    }
+}
+
+static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
+{
+    const char *aclname = qdict_get_str(qdict, "aclname");
+    const char *policy = qdict_get_str(qdict, "policy");
+    qemu_acl *acl = find_acl(mon, aclname);
+
+    if (acl) {
+        if (strcmp(policy, "allow") == 0) {
+            acl->defaultDeny = 0;
+            monitor_printf(mon, "acl: policy set to 'allow'\n");
+        } else if (strcmp(policy, "deny") == 0) {
+            acl->defaultDeny = 1;
+            monitor_printf(mon, "acl: policy set to 'deny'\n");
+        } else {
+            monitor_printf(mon, "acl: unknown policy '%s', "
+                           "expected 'deny' or 'allow'\n", policy);
+        }
+    }
+}
+
+static void hmp_acl_add(Monitor *mon, const QDict *qdict)
+{
+    const char *aclname = qdict_get_str(qdict, "aclname");
+    const char *match = qdict_get_str(qdict, "match");
+    const char *policy = qdict_get_str(qdict, "policy");
+    int has_index = qdict_haskey(qdict, "index");
+    int index = qdict_get_try_int(qdict, "index", -1);
+    qemu_acl *acl = find_acl(mon, aclname);
+    int deny, ret;
+
+    if (acl) {
+        if (strcmp(policy, "allow") == 0) {
+            deny = 0;
+        } else if (strcmp(policy, "deny") == 0) {
+            deny = 1;
+        } else {
+            monitor_printf(mon, "acl: unknown policy '%s', "
+                           "expected 'deny' or 'allow'\n", policy);
+            return;
+        }
+        if (has_index)
+            ret = qemu_acl_insert(acl, deny, match, index);
+        else
+            ret = qemu_acl_append(acl, deny, match);
+        if (ret < 0)
+            monitor_printf(mon, "acl: unable to add acl entry\n");
+        else
+            monitor_printf(mon, "acl: added rule at position %d\n", ret);
+    }
+}
+
+static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
+{
+    const char *aclname = qdict_get_str(qdict, "aclname");
+    const char *match = qdict_get_str(qdict, "match");
+    qemu_acl *acl = find_acl(mon, aclname);
+    int ret;
+
+    if (acl) {
+        ret = qemu_acl_remove(acl, match);
+        if (ret < 0)
+            monitor_printf(mon, "acl: no matching acl entry\n");
+        else
+            monitor_printf(mon, "acl: removed rule at position %d\n", ret);
+    }
+}
+
+#if defined(TARGET_I386)
+static void hmp_mce(Monitor *mon, const QDict *qdict)
+{
+    X86CPU *cpu;
+    CPUState *cs;
+    int cpu_index = qdict_get_int(qdict, "cpu_index");
+    int bank = qdict_get_int(qdict, "bank");
+    uint64_t status = qdict_get_int(qdict, "status");
+    uint64_t mcg_status = qdict_get_int(qdict, "mcg_status");
+    uint64_t addr = qdict_get_int(qdict, "addr");
+    uint64_t misc = qdict_get_int(qdict, "misc");
+    int flags = MCE_INJECT_UNCOND_AO;
+
+    if (qdict_get_try_bool(qdict, "broadcast", false)) {
+        flags |= MCE_INJECT_BROADCAST;
+    }
+    cs = qemu_get_cpu(cpu_index);
+    if (cs != NULL) {
+        cpu = X86_CPU(cs);
+        cpu_x86_inject_mce(mon, cpu, bank, status, mcg_status, addr, misc,
+                           flags);
+    }
+}
+#endif
+
+void qmp_getfd(const char *fdname, Error **errp)
+{
+    mon_fd_t *monfd;
+    int fd;
+
+    fd = qemu_chr_fe_get_msgfd(cur_mon->chr);
+    if (fd == -1) {
+        error_setg(errp, QERR_FD_NOT_SUPPLIED);
+        return;
+    }
+
+    if (qemu_isdigit(fdname[0])) {
+        close(fd);
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
+                   "a name not starting with a digit");
+        return;
+    }
+
+    QLIST_FOREACH(monfd, &cur_mon->fds, next) {
+        if (strcmp(monfd->name, fdname) != 0) {
+            continue;
+        }
+
+        close(monfd->fd);
+        monfd->fd = fd;
+        return;
+    }
+
+    monfd = g_malloc0(sizeof(mon_fd_t));
+    monfd->name = g_strdup(fdname);
+    monfd->fd = fd;
+
+    QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
+}
+
+void qmp_closefd(const char *fdname, Error **errp)
+{
+    mon_fd_t *monfd;
+
+    QLIST_FOREACH(monfd, &cur_mon->fds, next) {
+        if (strcmp(monfd->name, fdname) != 0) {
+            continue;
+        }
+
+        QLIST_REMOVE(monfd, next);
+        close(monfd->fd);
+        g_free(monfd->name);
+        g_free(monfd);
+        return;
+    }
+
+    error_setg(errp, QERR_FD_NOT_FOUND, fdname);
+}
+
+static void hmp_loadvm(Monitor *mon, const QDict *qdict)
+{
+    int saved_vm_running  = runstate_is_running();
+    const char *name = qdict_get_str(qdict, "name");
+
+    vm_stop(RUN_STATE_RESTORE_VM);
+
+    if (load_vmstate(name) == 0 && saved_vm_running) {
+        vm_start();
+    }
+}
+
+int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
+{
+    mon_fd_t *monfd;
+
+    QLIST_FOREACH(monfd, &mon->fds, next) {
+        int fd;
+
+        if (strcmp(monfd->name, fdname) != 0) {
+            continue;
+        }
+
+        fd = monfd->fd;
+
+        /* caller takes ownership of fd */
+        QLIST_REMOVE(monfd, next);
+        g_free(monfd->name);
+        g_free(monfd);
+
+        return fd;
+    }
+
+    error_setg(errp, "File descriptor named '%s' has not been found", fdname);
+    return -1;
+}
+
+static void monitor_fdset_cleanup(MonFdset *mon_fdset)
+{
+    MonFdsetFd *mon_fdset_fd;
+    MonFdsetFd *mon_fdset_fd_next;
+
+    QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
+        if ((mon_fdset_fd->removed ||
+                (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
+                runstate_is_running()) {
+            close(mon_fdset_fd->fd);
+            g_free(mon_fdset_fd->opaque);
+            QLIST_REMOVE(mon_fdset_fd, next);
+            g_free(mon_fdset_fd);
+        }
+    }
+
+    if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
+        QLIST_REMOVE(mon_fdset, next);
+        g_free(mon_fdset);
+    }
+}
+
+static void monitor_fdsets_cleanup(void)
+{
+    MonFdset *mon_fdset;
+    MonFdset *mon_fdset_next;
+
+    QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
+        monitor_fdset_cleanup(mon_fdset);
+    }
+}
+
+AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
+                      const char *opaque, Error **errp)
+{
+    int fd;
+    Monitor *mon = cur_mon;
+    AddfdInfo *fdinfo;
+
+    fd = qemu_chr_fe_get_msgfd(mon->chr);
+    if (fd == -1) {
+        error_setg(errp, QERR_FD_NOT_SUPPLIED);
+        goto error;
+    }
+
+    fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
+                                  has_opaque, opaque, errp);
+    if (fdinfo) {
+        return fdinfo;
+    }
+
+error:
+    if (fd != -1) {
+        close(fd);
+    }
+    return NULL;
+}
+
+void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
+{
+    MonFdset *mon_fdset;
+    MonFdsetFd *mon_fdset_fd;
+    char fd_str[60];
+
+    QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+        if (mon_fdset->id != fdset_id) {
+            continue;
+        }
+        QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
+            if (has_fd) {
+                if (mon_fdset_fd->fd != fd) {
+                    continue;
+                }
+                mon_fdset_fd->removed = true;
+                break;
+            } else {
+                mon_fdset_fd->removed = true;
+            }
+        }
+        if (has_fd && !mon_fdset_fd) {
+            goto error;
+        }
+        monitor_fdset_cleanup(mon_fdset);
+        return;
+    }
+
+error:
+    if (has_fd) {
+        snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
+                 fdset_id, fd);
+    } else {
+        snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
+    }
+    error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
+}
+
+FdsetInfoList *qmp_query_fdsets(Error **errp)
+{
+    MonFdset *mon_fdset;
+    MonFdsetFd *mon_fdset_fd;
+    FdsetInfoList *fdset_list = NULL;
+
+    QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+        FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
+        FdsetFdInfoList *fdsetfd_list = NULL;
+
+        fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
+        fdset_info->value->fdset_id = mon_fdset->id;
+
+        QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
+            FdsetFdInfoList *fdsetfd_info;
+
+            fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
+            fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
+            fdsetfd_info->value->fd = mon_fdset_fd->fd;
+            if (mon_fdset_fd->opaque) {
+                fdsetfd_info->value->has_opaque = true;
+                fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
+            } else {
+                fdsetfd_info->value->has_opaque = false;
+            }
+
+            fdsetfd_info->next = fdsetfd_list;
+            fdsetfd_list = fdsetfd_info;
+        }
+
+        fdset_info->value->fds = fdsetfd_list;
+
+        fdset_info->next = fdset_list;
+        fdset_list = fdset_info;
+    }
+
+    return fdset_list;
+}
+
+AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
+                                bool has_opaque, const char *opaque,
+                                Error **errp)
+{
+    MonFdset *mon_fdset = NULL;
+    MonFdsetFd *mon_fdset_fd;
+    AddfdInfo *fdinfo;
+
+    if (has_fdset_id) {
+        QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+            /* Break if match found or match impossible due to ordering by ID */
+            if (fdset_id <= mon_fdset->id) {
+                if (fdset_id < mon_fdset->id) {
+                    mon_fdset = NULL;
+                }
+                break;
+            }
+        }
+    }
+
+    if (mon_fdset == NULL) {
+        int64_t fdset_id_prev = -1;
+        MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
+
+        if (has_fdset_id) {
+            if (fdset_id < 0) {
+                error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
+                           "a non-negative value");
+                return NULL;
+            }
+            /* Use specified fdset ID */
+            QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+                mon_fdset_cur = mon_fdset;
+                if (fdset_id < mon_fdset_cur->id) {
+                    break;
+                }
+            }
+        } else {
+            /* Use first available fdset ID */
+            QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+                mon_fdset_cur = mon_fdset;
+                if (fdset_id_prev == mon_fdset_cur->id - 1) {
+                    fdset_id_prev = mon_fdset_cur->id;
+                    continue;
+                }
+                break;
+            }
+        }
+
+        mon_fdset = g_malloc0(sizeof(*mon_fdset));
+        if (has_fdset_id) {
+            mon_fdset->id = fdset_id;
+        } else {
+            mon_fdset->id = fdset_id_prev + 1;
+        }
+
+        /* The fdset list is ordered by fdset ID */
+        if (!mon_fdset_cur) {
+            QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
+        } else if (mon_fdset->id < mon_fdset_cur->id) {
+            QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
+        } else {
+            QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
+        }
+    }
+
+    mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
+    mon_fdset_fd->fd = fd;
+    mon_fdset_fd->removed = false;
+    if (has_opaque) {
+        mon_fdset_fd->opaque = g_strdup(opaque);
+    }
+    QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
+
+    fdinfo = g_malloc0(sizeof(*fdinfo));
+    fdinfo->fdset_id = mon_fdset->id;
+    fdinfo->fd = mon_fdset_fd->fd;
+
+    return fdinfo;
+}
+
+int monitor_fdset_get_fd(int64_t fdset_id, int flags)
+{
+#ifndef _WIN32
+    MonFdset *mon_fdset;
+    MonFdsetFd *mon_fdset_fd;
+    int mon_fd_flags;
+
+    QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+        if (mon_fdset->id != fdset_id) {
+            continue;
+        }
+        QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
+            mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
+            if (mon_fd_flags == -1) {
+                return -1;
+            }
+
+            if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
+                return mon_fdset_fd->fd;
+            }
+        }
+        errno = EACCES;
+        return -1;
+    }
+#endif
+
+    errno = ENOENT;
+    return -1;
+}
+
+int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
+{
+    MonFdset *mon_fdset;
+    MonFdsetFd *mon_fdset_fd_dup;
+
+    QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+        if (mon_fdset->id != fdset_id) {
+            continue;
+        }
+        QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
+            if (mon_fdset_fd_dup->fd == dup_fd) {
+                return -1;
+            }
+        }
+        mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
+        mon_fdset_fd_dup->fd = dup_fd;
+        QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
+        return 0;
+    }
+    return -1;
+}
+
+static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
+{
+    MonFdset *mon_fdset;
+    MonFdsetFd *mon_fdset_fd_dup;
+
+    QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
+        QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
+            if (mon_fdset_fd_dup->fd == dup_fd) {
+                if (remove) {
+                    QLIST_REMOVE(mon_fdset_fd_dup, next);
+                    if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
+                        monitor_fdset_cleanup(mon_fdset);
+                    }
+                    return -1;
+                } else {
+                    return mon_fdset->id;
+                }
+            }
+        }
+    }
+    return -1;
+}
+
+int monitor_fdset_dup_fd_find(int dup_fd)
+{
+    return monitor_fdset_dup_fd_find_remove(dup_fd, false);
+}
+
+void monitor_fdset_dup_fd_remove(int dup_fd)
+{
+    monitor_fdset_dup_fd_find_remove(dup_fd, true);
+}
+
+int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
+{
+    int fd;
+    Error *local_err = NULL;
+
+    if (!qemu_isdigit(fdname[0]) && mon) {
+        fd = monitor_get_fd(mon, fdname, &local_err);
+    } else {
+        fd = qemu_parse_fd(fdname);
+        if (fd == -1) {
+            error_setg(&local_err, "Invalid file descriptor number '%s'",
+                       fdname);
+        }
+    }
+    if (local_err) {
+        error_propagate(errp, local_err);
+        assert(fd == -1);
+    } else {
+        assert(fd != -1);
+    }
+
+    return fd;
+}
+
+/* Please update hmp-commands.hx when adding or changing commands */
+static mon_cmd_t info_cmds[] = {
+    {
+        .name       = "version",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the version of QEMU",
+        .mhandler.cmd = hmp_info_version,
+    },
+    {
+        .name       = "network",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the network state",
+        .mhandler.cmd = hmp_info_network,
+    },
+    {
+        .name       = "chardev",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the character devices",
+        .mhandler.cmd = hmp_info_chardev,
+    },
+    {
+        .name       = "block",
+        .args_type  = "nodes:-n,verbose:-v,device:B?",
+        .params     = "[-n] [-v] [device]",
+        .help       = "show info of one block device or all block devices "
+                      "(-n: show named nodes; -v: show details)",
+        .mhandler.cmd = hmp_info_block,
+    },
+    {
+        .name       = "blockstats",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show block device statistics",
+        .mhandler.cmd = hmp_info_blockstats,
+    },
+    {
+        .name       = "block-jobs",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show progress of ongoing block device operations",
+        .mhandler.cmd = hmp_info_block_jobs,
+    },
+    {
+        .name       = "registers",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the cpu registers",
+        .mhandler.cmd = hmp_info_registers,
+    },
+    {
+        .name       = "cpus",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show infos for each CPU",
+        .mhandler.cmd = hmp_info_cpus,
+    },
+    {
+        .name       = "history",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the command line history",
+        .mhandler.cmd = hmp_info_history,
+    },
+#if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_MIPS) || \
+    defined(TARGET_LM32) || (defined(TARGET_SPARC) && !defined(TARGET_SPARC64))
+    {
+        .name       = "irq",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the interrupts statistics (if available)",
+#ifdef TARGET_SPARC
+        .mhandler.cmd = sun4m_hmp_info_irq,
+#elif defined(TARGET_LM32)
+        .mhandler.cmd = lm32_hmp_info_irq,
+#else
+        .mhandler.cmd = hmp_info_irq,
+#endif
+    },
+    {
+        .name       = "pic",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show i8259 (PIC) state",
+#ifdef TARGET_SPARC
+        .mhandler.cmd = sun4m_hmp_info_pic,
+#elif defined(TARGET_LM32)
+        .mhandler.cmd = lm32_hmp_info_pic,
+#else
+        .mhandler.cmd = hmp_info_pic,
+#endif
+    },
+#endif
+    {
+        .name       = "pci",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show PCI info",
+        .mhandler.cmd = hmp_info_pci,
+    },
+#if defined(TARGET_I386) || defined(TARGET_SH4) || defined(TARGET_SPARC) || \
+    defined(TARGET_PPC) || defined(TARGET_XTENSA)
+    {
+        .name       = "tlb",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show virtual to physical memory mappings",
+        .mhandler.cmd = hmp_info_tlb,
+    },
+#endif
+#if defined(TARGET_I386)
+    {
+        .name       = "mem",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the active virtual memory mappings",
+        .mhandler.cmd = hmp_info_mem,
+    },
+#endif
+    {
+        .name       = "mtree",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show memory tree",
+        .mhandler.cmd = hmp_info_mtree,
+    },
+    {
+        .name       = "jit",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show dynamic compiler info",
+        .mhandler.cmd = hmp_info_jit,
+    },
+    {
+        .name       = "opcount",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show dynamic compiler opcode counters",
+        .mhandler.cmd = hmp_info_opcount,
+    },
+    {
+        .name       = "kvm",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show KVM information",
+        .mhandler.cmd = hmp_info_kvm,
+    },
+    {
+        .name       = "numa",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show NUMA information",
+        .mhandler.cmd = hmp_info_numa,
+    },
+    {
+        .name       = "usb",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show guest USB devices",
+        .mhandler.cmd = hmp_info_usb,
+    },
+    {
+        .name       = "usbhost",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show host USB devices",
+        .mhandler.cmd = hmp_info_usbhost,
+    },
+    {
+        .name       = "profile",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show profiling information",
+        .mhandler.cmd = hmp_info_profile,
+    },
+    {
+        .name       = "capture",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show capture information",
+        .mhandler.cmd = hmp_info_capture,
+    },
+    {
+        .name       = "snapshots",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the currently saved VM snapshots",
+        .mhandler.cmd = hmp_info_snapshots,
+    },
+    {
+        .name       = "status",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the current VM status (running|paused)",
+        .mhandler.cmd = hmp_info_status,
+    },
+    {
+        .name       = "mice",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show which guest mouse is receiving events",
+        .mhandler.cmd = hmp_info_mice,
+    },
+    {
+        .name       = "vnc",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the vnc server status",
+        .mhandler.cmd = hmp_info_vnc,
+    },
+#if defined(CONFIG_SPICE)
+    {
+        .name       = "spice",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the spice server status",
+        .mhandler.cmd = hmp_info_spice,
+    },
+#endif
+    {
+        .name       = "name",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the current VM name",
+        .mhandler.cmd = hmp_info_name,
+    },
+    {
+        .name       = "uuid",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the current VM UUID",
+        .mhandler.cmd = hmp_info_uuid,
+    },
+    {
+        .name       = "cpustats",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show CPU statistics",
+        .mhandler.cmd = hmp_info_cpustats,
+    },
+#if defined(CONFIG_SLIRP)
+    {
+        .name       = "usernet",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show user network stack connection states",
+        .mhandler.cmd = hmp_info_usernet,
+    },
+#endif
+    {
+        .name       = "migrate",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show migration status",
+        .mhandler.cmd = hmp_info_migrate,
+    },
+    {
+        .name       = "migrate_capabilities",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show current migration capabilities",
+        .mhandler.cmd = hmp_info_migrate_capabilities,
+    },
+    {
+        .name       = "migrate_parameters",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show current migration parameters",
+        .mhandler.cmd = hmp_info_migrate_parameters,
+    },
+    {
+        .name       = "migrate_cache_size",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show current migration xbzrle cache size",
+        .mhandler.cmd = hmp_info_migrate_cache_size,
+    },
+    {
+        .name       = "balloon",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show balloon information",
+        .mhandler.cmd = hmp_info_balloon,
+    },
+    {
+        .name       = "qtree",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show device tree",
+        .mhandler.cmd = hmp_info_qtree,
+    },
+    {
+        .name       = "qdm",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show qdev device model list",
+        .mhandler.cmd = hmp_info_qdm,
+    },
+    {
+        .name       = "qom-tree",
+        .args_type  = "path:s?",
+        .params     = "[path]",
+        .help       = "show QOM composition tree",
+        .mhandler.cmd = hmp_info_qom_tree,
+    },
+    {
+        .name       = "roms",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show roms",
+        .mhandler.cmd = hmp_info_roms,
+    },
+    {
+        .name       = "trace-events",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show available trace-events & their state",
+        .mhandler.cmd = hmp_info_trace_events,
+    },
+    {
+        .name       = "tpm",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show the TPM device",
+        .mhandler.cmd = hmp_info_tpm,
+    },
+    {
+        .name       = "memdev",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show memory backends",
+        .mhandler.cmd = hmp_info_memdev,
+    },
+    {
+        .name       = "memory-devices",
+        .args_type  = "",
+        .params     = "",
+        .help       = "show memory devices",
+        .mhandler.cmd = hmp_info_memory_devices,
+    },
+    {
+        .name       = "rocker",
+        .args_type  = "name:s",
+        .params     = "name",
+        .help       = "Show rocker switch",
+        .mhandler.cmd = hmp_rocker,
+    },
+    {
+        .name       = "rocker-ports",
+        .args_type  = "name:s",
+        .params     = "name",
+        .help       = "Show rocker ports",
+        .mhandler.cmd = hmp_rocker_ports,
+    },
+    {
+        .name       = "rocker-of-dpa-flows",
+        .args_type  = "name:s,tbl_id:i?",
+        .params     = "name [tbl_id]",
+        .help       = "Show rocker OF-DPA flow tables",
+        .mhandler.cmd = hmp_rocker_of_dpa_flows,
+    },
+    {
+        .name       = "rocker-of-dpa-groups",
+        .args_type  = "name:s,type:i?",
+        .params     = "name [type]",
+        .help       = "Show rocker OF-DPA groups",
+        .mhandler.cmd = hmp_rocker_of_dpa_groups,
+    },
+    {
+        .name       = NULL,
+    },
+};
+
+/* mon_cmds and info_cmds would be sorted at runtime */
+static mon_cmd_t mon_cmds[] = {
+#include "hmp-commands.h"
+    { NULL, NULL, },
+};
+
+static const mon_cmd_t qmp_cmds[] = {
+#include "qmp-commands-old.h"
+    { /* NULL */ },
+};
+
+/*******************************************************************/
+
+static const char *pch;
+static sigjmp_buf expr_env;
+
+#define MD_TLONG 0
+#define MD_I32   1
+
+typedef struct MonitorDef {
+    const char *name;
+    int offset;
+    target_long (*get_value)(const struct MonitorDef *md, int val);
+    int type;
+} MonitorDef;
+
+#if defined(TARGET_I386)
+static target_long monitor_get_pc (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return env->eip + env->segs[R_CS].base;
+}
+#endif
+
+#if defined(TARGET_PPC)
+static target_long monitor_get_ccr (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    unsigned int u;
+    int i;
+
+    u = 0;
+    for (i = 0; i < 8; i++)
+        u |= env->crf[i] << (32 - (4 * (i + 1)));
+
+    return u;
+}
+
+static target_long monitor_get_msr (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return env->msr;
+}
+
+static target_long monitor_get_xer (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return env->xer;
+}
+
+static target_long monitor_get_decr (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return cpu_ppc_load_decr(env);
+}
+
+static target_long monitor_get_tbu (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return cpu_ppc_load_tbu(env);
+}
+
+static target_long monitor_get_tbl (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return cpu_ppc_load_tbl(env);
+}
+#endif
+
+#if defined(TARGET_SPARC)
+#ifndef TARGET_SPARC64
+static target_long monitor_get_psr (const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+
+    return cpu_get_psr(env);
+}
+#endif
+
+static target_long monitor_get_reg(const struct MonitorDef *md, int val)
+{
+    CPUArchState *env = mon_get_cpu_env();
+    return env->regwptr[val];
+}
+#endif
+
+static const MonitorDef monitor_defs[] = {
+#ifdef TARGET_I386
+
+#define SEG(name, seg) \
+    { name, offsetof(CPUX86State, segs[seg].selector), NULL, MD_I32 },\
+    { name ".base", offsetof(CPUX86State, segs[seg].base) },\
+    { name ".limit", offsetof(CPUX86State, segs[seg].limit), NULL, MD_I32 },
+
+    { "eax", offsetof(CPUX86State, regs[0]) },
+    { "ecx", offsetof(CPUX86State, regs[1]) },
+    { "edx", offsetof(CPUX86State, regs[2]) },
+    { "ebx", offsetof(CPUX86State, regs[3]) },
+    { "esp|sp", offsetof(CPUX86State, regs[4]) },
+    { "ebp|fp", offsetof(CPUX86State, regs[5]) },
+    { "esi", offsetof(CPUX86State, regs[6]) },
+    { "edi", offsetof(CPUX86State, regs[7]) },
+#ifdef TARGET_X86_64
+    { "r8", offsetof(CPUX86State, regs[8]) },
+    { "r9", offsetof(CPUX86State, regs[9]) },
+    { "r10", offsetof(CPUX86State, regs[10]) },
+    { "r11", offsetof(CPUX86State, regs[11]) },
+    { "r12", offsetof(CPUX86State, regs[12]) },
+    { "r13", offsetof(CPUX86State, regs[13]) },
+    { "r14", offsetof(CPUX86State, regs[14]) },
+    { "r15", offsetof(CPUX86State, regs[15]) },
+#endif
+    { "eflags", offsetof(CPUX86State, eflags) },
+    { "eip", offsetof(CPUX86State, eip) },
+    SEG("cs", R_CS)
+    SEG("ds", R_DS)
+    SEG("es", R_ES)
+    SEG("ss", R_SS)
+    SEG("fs", R_FS)
+    SEG("gs", R_GS)
+    { "pc", 0, monitor_get_pc, },
+#elif defined(TARGET_PPC)
+    /* General purpose registers */
+    { "r0", offsetof(CPUPPCState, gpr[0]) },
+    { "r1", offsetof(CPUPPCState, gpr[1]) },
+    { "r2", offsetof(CPUPPCState, gpr[2]) },
+    { "r3", offsetof(CPUPPCState, gpr[3]) },
+    { "r4", offsetof(CPUPPCState, gpr[4]) },
+    { "r5", offsetof(CPUPPCState, gpr[5]) },
+    { "r6", offsetof(CPUPPCState, gpr[6]) },
+    { "r7", offsetof(CPUPPCState, gpr[7]) },
+    { "r8", offsetof(CPUPPCState, gpr[8]) },
+    { "r9", offsetof(CPUPPCState, gpr[9]) },
+    { "r10", offsetof(CPUPPCState, gpr[10]) },
+    { "r11", offsetof(CPUPPCState, gpr[11]) },
+    { "r12", offsetof(CPUPPCState, gpr[12]) },
+    { "r13", offsetof(CPUPPCState, gpr[13]) },
+    { "r14", offsetof(CPUPPCState, gpr[14]) },
+    { "r15", offsetof(CPUPPCState, gpr[15]) },
+    { "r16", offsetof(CPUPPCState, gpr[16]) },
+    { "r17", offsetof(CPUPPCState, gpr[17]) },
+    { "r18", offsetof(CPUPPCState, gpr[18]) },
+    { "r19", offsetof(CPUPPCState, gpr[19]) },
+    { "r20", offsetof(CPUPPCState, gpr[20]) },
+    { "r21", offsetof(CPUPPCState, gpr[21]) },
+    { "r22", offsetof(CPUPPCState, gpr[22]) },
+    { "r23", offsetof(CPUPPCState, gpr[23]) },
+    { "r24", offsetof(CPUPPCState, gpr[24]) },
+    { "r25", offsetof(CPUPPCState, gpr[25]) },
+    { "r26", offsetof(CPUPPCState, gpr[26]) },
+    { "r27", offsetof(CPUPPCState, gpr[27]) },
+    { "r28", offsetof(CPUPPCState, gpr[28]) },
+    { "r29", offsetof(CPUPPCState, gpr[29]) },
+    { "r30", offsetof(CPUPPCState, gpr[30]) },
+    { "r31", offsetof(CPUPPCState, gpr[31]) },
+    /* Floating point registers */
+    { "f0", offsetof(CPUPPCState, fpr[0]) },
+    { "f1", offsetof(CPUPPCState, fpr[1]) },
+    { "f2", offsetof(CPUPPCState, fpr[2]) },
+    { "f3", offsetof(CPUPPCState, fpr[3]) },
+    { "f4", offsetof(CPUPPCState, fpr[4]) },
+    { "f5", offsetof(CPUPPCState, fpr[5]) },
+    { "f6", offsetof(CPUPPCState, fpr[6]) },
+    { "f7", offsetof(CPUPPCState, fpr[7]) },
+    { "f8", offsetof(CPUPPCState, fpr[8]) },
+    { "f9", offsetof(CPUPPCState, fpr[9]) },
+    { "f10", offsetof(CPUPPCState, fpr[10]) },
+    { "f11", offsetof(CPUPPCState, fpr[11]) },
+    { "f12", offsetof(CPUPPCState, fpr[12]) },
+    { "f13", offsetof(CPUPPCState, fpr[13]) },
+    { "f14", offsetof(CPUPPCState, fpr[14]) },
+    { "f15", offsetof(CPUPPCState, fpr[15]) },
+    { "f16", offsetof(CPUPPCState, fpr[16]) },
+    { "f17", offsetof(CPUPPCState, fpr[17]) },
+    { "f18", offsetof(CPUPPCState, fpr[18]) },
+    { "f19", offsetof(CPUPPCState, fpr[19]) },
+    { "f20", offsetof(CPUPPCState, fpr[20]) },
+    { "f21", offsetof(CPUPPCState, fpr[21]) },
+    { "f22", offsetof(CPUPPCState, fpr[22]) },
+    { "f23", offsetof(CPUPPCState, fpr[23]) },
+    { "f24", offsetof(CPUPPCState, fpr[24]) },
+    { "f25", offsetof(CPUPPCState, fpr[25]) },
+    { "f26", offsetof(CPUPPCState, fpr[26]) },
+    { "f27", offsetof(CPUPPCState, fpr[27]) },
+    { "f28", offsetof(CPUPPCState, fpr[28]) },
+    { "f29", offsetof(CPUPPCState, fpr[29]) },
+    { "f30", offsetof(CPUPPCState, fpr[30]) },
+    { "f31", offsetof(CPUPPCState, fpr[31]) },
+    { "fpscr", offsetof(CPUPPCState, fpscr) },
+    /* Next instruction pointer */
+    { "nip|pc", offsetof(CPUPPCState, nip) },
+    { "lr", offsetof(CPUPPCState, lr) },
+    { "ctr", offsetof(CPUPPCState, ctr) },
+    { "decr", 0, &monitor_get_decr, },
+    { "ccr", 0, &monitor_get_ccr, },
+    /* Machine state register */
+    { "msr", 0, &monitor_get_msr, },
+    { "xer", 0, &monitor_get_xer, },
+    { "tbu", 0, &monitor_get_tbu, },
+    { "tbl", 0, &monitor_get_tbl, },
+    /* Segment registers */
+    { "sdr1", offsetof(CPUPPCState, spr[SPR_SDR1]) },
+    { "sr0", offsetof(CPUPPCState, sr[0]) },
+    { "sr1", offsetof(CPUPPCState, sr[1]) },
+    { "sr2", offsetof(CPUPPCState, sr[2]) },
+    { "sr3", offsetof(CPUPPCState, sr[3]) },
+    { "sr4", offsetof(CPUPPCState, sr[4]) },
+    { "sr5", offsetof(CPUPPCState, sr[5]) },
+    { "sr6", offsetof(CPUPPCState, sr[6]) },
+    { "sr7", offsetof(CPUPPCState, sr[7]) },
+    { "sr8", offsetof(CPUPPCState, sr[8]) },
+    { "sr9", offsetof(CPUPPCState, sr[9]) },
+    { "sr10", offsetof(CPUPPCState, sr[10]) },
+    { "sr11", offsetof(CPUPPCState, sr[11]) },
+    { "sr12", offsetof(CPUPPCState, sr[12]) },
+    { "sr13", offsetof(CPUPPCState, sr[13]) },
+    { "sr14", offsetof(CPUPPCState, sr[14]) },
+    { "sr15", offsetof(CPUPPCState, sr[15]) },
+    /* Too lazy to put BATs... */
+    { "pvr", offsetof(CPUPPCState, spr[SPR_PVR]) },
+
+    { "srr0", offsetof(CPUPPCState, spr[SPR_SRR0]) },
+    { "srr1", offsetof(CPUPPCState, spr[SPR_SRR1]) },
+    { "dar", offsetof(CPUPPCState, spr[SPR_DAR]) },
+    { "dsisr", offsetof(CPUPPCState, spr[SPR_DSISR]) },
+    { "cfar", offsetof(CPUPPCState, spr[SPR_CFAR]) },
+    { "sprg0", offsetof(CPUPPCState, spr[SPR_SPRG0]) },
+    { "sprg1", offsetof(CPUPPCState, spr[SPR_SPRG1]) },
+    { "sprg2", offsetof(CPUPPCState, spr[SPR_SPRG2]) },
+    { "sprg3", offsetof(CPUPPCState, spr[SPR_SPRG3]) },
+    { "sprg4", offsetof(CPUPPCState, spr[SPR_SPRG4]) },
+    { "sprg5", offsetof(CPUPPCState, spr[SPR_SPRG5]) },
+    { "sprg6", offsetof(CPUPPCState, spr[SPR_SPRG6]) },
+    { "sprg7", offsetof(CPUPPCState, spr[SPR_SPRG7]) },
+    { "pid", offsetof(CPUPPCState, spr[SPR_BOOKE_PID]) },
+    { "csrr0", offsetof(CPUPPCState, spr[SPR_BOOKE_CSRR0]) },
+    { "csrr1", offsetof(CPUPPCState, spr[SPR_BOOKE_CSRR1]) },
+    { "esr", offsetof(CPUPPCState, spr[SPR_BOOKE_ESR]) },
+    { "dear", offsetof(CPUPPCState, spr[SPR_BOOKE_DEAR]) },
+    { "mcsr", offsetof(CPUPPCState, spr[SPR_BOOKE_MCSR]) },
+    { "tsr", offsetof(CPUPPCState, spr[SPR_BOOKE_TSR]) },
+    { "tcr", offsetof(CPUPPCState, spr[SPR_BOOKE_TCR]) },
+    { "vrsave", offsetof(CPUPPCState, spr[SPR_VRSAVE]) },
+    { "pir", offsetof(CPUPPCState, spr[SPR_BOOKE_PIR]) },
+    { "mcsrr0", offsetof(CPUPPCState, spr[SPR_BOOKE_MCSRR0]) },
+    { "mcsrr1", offsetof(CPUPPCState, spr[SPR_BOOKE_MCSRR1]) },
+    { "decar", offsetof(CPUPPCState, spr[SPR_BOOKE_DECAR]) },
+    { "ivpr", offsetof(CPUPPCState, spr[SPR_BOOKE_IVPR]) },
+    { "epcr", offsetof(CPUPPCState, spr[SPR_BOOKE_EPCR]) },
+    { "sprg8", offsetof(CPUPPCState, spr[SPR_BOOKE_SPRG8]) },
+    { "ivor0", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR0]) },
+    { "ivor1", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR1]) },
+    { "ivor2", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR2]) },
+    { "ivor3", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR3]) },
+    { "ivor4", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR4]) },
+    { "ivor5", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR5]) },
+    { "ivor6", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR6]) },
+    { "ivor7", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR7]) },
+    { "ivor8", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR8]) },
+    { "ivor9", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR9]) },
+    { "ivor10", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR10]) },
+    { "ivor11", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR11]) },
+    { "ivor12", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR12]) },
+    { "ivor13", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR13]) },
+    { "ivor14", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR14]) },
+    { "ivor15", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR15]) },
+    { "ivor32", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR32]) },
+    { "ivor33", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR33]) },
+    { "ivor34", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR34]) },
+    { "ivor35", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR35]) },
+    { "ivor36", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR36]) },
+    { "ivor37", offsetof(CPUPPCState, spr[SPR_BOOKE_IVOR37]) },
+    { "mas0", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS0]) },
+    { "mas1", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS1]) },
+    { "mas2", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS2]) },
+    { "mas3", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS3]) },
+    { "mas4", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS4]) },
+    { "mas6", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS6]) },
+    { "mas7", offsetof(CPUPPCState, spr[SPR_BOOKE_MAS7]) },
+    { "mmucfg", offsetof(CPUPPCState, spr[SPR_MMUCFG]) },
+    { "tlb0cfg", offsetof(CPUPPCState, spr[SPR_BOOKE_TLB0CFG]) },
+    { "tlb1cfg", offsetof(CPUPPCState, spr[SPR_BOOKE_TLB1CFG]) },
+    { "epr", offsetof(CPUPPCState, spr[SPR_BOOKE_EPR]) },
+    { "eplc", offsetof(CPUPPCState, spr[SPR_BOOKE_EPLC]) },
+    { "epsc", offsetof(CPUPPCState, spr[SPR_BOOKE_EPSC]) },
+    { "svr", offsetof(CPUPPCState, spr[SPR_E500_SVR]) },
+    { "mcar", offsetof(CPUPPCState, spr[SPR_Exxx_MCAR]) },
+    { "pid1", offsetof(CPUPPCState, spr[SPR_BOOKE_PID1]) },
+    { "pid2", offsetof(CPUPPCState, spr[SPR_BOOKE_PID2]) },
+    { "hid0", offsetof(CPUPPCState, spr[SPR_HID0]) },
+
+#elif defined(TARGET_SPARC)
+    { "g0", offsetof(CPUSPARCState, gregs[0]) },
+    { "g1", offsetof(CPUSPARCState, gregs[1]) },
+    { "g2", offsetof(CPUSPARCState, gregs[2]) },
+    { "g3", offsetof(CPUSPARCState, gregs[3]) },
+    { "g4", offsetof(CPUSPARCState, gregs[4]) },
+    { "g5", offsetof(CPUSPARCState, gregs[5]) },
+    { "g6", offsetof(CPUSPARCState, gregs[6]) },
+    { "g7", offsetof(CPUSPARCState, gregs[7]) },
+    { "o0", 0, monitor_get_reg },
+    { "o1", 1, monitor_get_reg },
+    { "o2", 2, monitor_get_reg },
+    { "o3", 3, monitor_get_reg },
+    { "o4", 4, monitor_get_reg },
+    { "o5", 5, monitor_get_reg },
+    { "o6", 6, monitor_get_reg },
+    { "o7", 7, monitor_get_reg },
+    { "l0", 8, monitor_get_reg },
+    { "l1", 9, monitor_get_reg },
+    { "l2", 10, monitor_get_reg },
+    { "l3", 11, monitor_get_reg },
+    { "l4", 12, monitor_get_reg },
+    { "l5", 13, monitor_get_reg },
+    { "l6", 14, monitor_get_reg },
+    { "l7", 15, monitor_get_reg },
+    { "i0", 16, monitor_get_reg },
+    { "i1", 17, monitor_get_reg },
+    { "i2", 18, monitor_get_reg },
+    { "i3", 19, monitor_get_reg },
+    { "i4", 20, monitor_get_reg },
+    { "i5", 21, monitor_get_reg },
+    { "i6", 22, monitor_get_reg },
+    { "i7", 23, monitor_get_reg },
+    { "pc", offsetof(CPUSPARCState, pc) },
+    { "npc", offsetof(CPUSPARCState, npc) },
+    { "y", offsetof(CPUSPARCState, y) },
+#ifndef TARGET_SPARC64
+    { "psr", 0, &monitor_get_psr, },
+    { "wim", offsetof(CPUSPARCState, wim) },
+#endif
+    { "tbr", offsetof(CPUSPARCState, tbr) },
+    { "fsr", offsetof(CPUSPARCState, fsr) },
+    { "f0", offsetof(CPUSPARCState, fpr[0].l.upper) },
+    { "f1", offsetof(CPUSPARCState, fpr[0].l.lower) },
+    { "f2", offsetof(CPUSPARCState, fpr[1].l.upper) },
+    { "f3", offsetof(CPUSPARCState, fpr[1].l.lower) },
+    { "f4", offsetof(CPUSPARCState, fpr[2].l.upper) },
+    { "f5", offsetof(CPUSPARCState, fpr[2].l.lower) },
+    { "f6", offsetof(CPUSPARCState, fpr[3].l.upper) },
+    { "f7", offsetof(CPUSPARCState, fpr[3].l.lower) },
+    { "f8", offsetof(CPUSPARCState, fpr[4].l.upper) },
+    { "f9", offsetof(CPUSPARCState, fpr[4].l.lower) },
+    { "f10", offsetof(CPUSPARCState, fpr[5].l.upper) },
+    { "f11", offsetof(CPUSPARCState, fpr[5].l.lower) },
+    { "f12", offsetof(CPUSPARCState, fpr[6].l.upper) },
+    { "f13", offsetof(CPUSPARCState, fpr[6].l.lower) },
+    { "f14", offsetof(CPUSPARCState, fpr[7].l.upper) },
+    { "f15", offsetof(CPUSPARCState, fpr[7].l.lower) },
+    { "f16", offsetof(CPUSPARCState, fpr[8].l.upper) },
+    { "f17", offsetof(CPUSPARCState, fpr[8].l.lower) },
+    { "f18", offsetof(CPUSPARCState, fpr[9].l.upper) },
+    { "f19", offsetof(CPUSPARCState, fpr[9].l.lower) },
+    { "f20", offsetof(CPUSPARCState, fpr[10].l.upper) },
+    { "f21", offsetof(CPUSPARCState, fpr[10].l.lower) },
+    { "f22", offsetof(CPUSPARCState, fpr[11].l.upper) },
+    { "f23", offsetof(CPUSPARCState, fpr[11].l.lower) },
+    { "f24", offsetof(CPUSPARCState, fpr[12].l.upper) },
+    { "f25", offsetof(CPUSPARCState, fpr[12].l.lower) },
+    { "f26", offsetof(CPUSPARCState, fpr[13].l.upper) },
+    { "f27", offsetof(CPUSPARCState, fpr[13].l.lower) },
+    { "f28", offsetof(CPUSPARCState, fpr[14].l.upper) },
+    { "f29", offsetof(CPUSPARCState, fpr[14].l.lower) },
+    { "f30", offsetof(CPUSPARCState, fpr[15].l.upper) },
+    { "f31", offsetof(CPUSPARCState, fpr[15].l.lower) },
+#ifdef TARGET_SPARC64
+    { "f32", offsetof(CPUSPARCState, fpr[16]) },
+    { "f34", offsetof(CPUSPARCState, fpr[17]) },
+    { "f36", offsetof(CPUSPARCState, fpr[18]) },
+    { "f38", offsetof(CPUSPARCState, fpr[19]) },
+    { "f40", offsetof(CPUSPARCState, fpr[20]) },
+    { "f42", offsetof(CPUSPARCState, fpr[21]) },
+    { "f44", offsetof(CPUSPARCState, fpr[22]) },
+    { "f46", offsetof(CPUSPARCState, fpr[23]) },
+    { "f48", offsetof(CPUSPARCState, fpr[24]) },
+    { "f50", offsetof(CPUSPARCState, fpr[25]) },
+    { "f52", offsetof(CPUSPARCState, fpr[26]) },
+    { "f54", offsetof(CPUSPARCState, fpr[27]) },
+    { "f56", offsetof(CPUSPARCState, fpr[28]) },
+    { "f58", offsetof(CPUSPARCState, fpr[29]) },
+    { "f60", offsetof(CPUSPARCState, fpr[30]) },
+    { "f62", offsetof(CPUSPARCState, fpr[31]) },
+    { "asi", offsetof(CPUSPARCState, asi) },
+    { "pstate", offsetof(CPUSPARCState, pstate) },
+    { "cansave", offsetof(CPUSPARCState, cansave) },
+    { "canrestore", offsetof(CPUSPARCState, canrestore) },
+    { "otherwin", offsetof(CPUSPARCState, otherwin) },
+    { "wstate", offsetof(CPUSPARCState, wstate) },
+    { "cleanwin", offsetof(CPUSPARCState, cleanwin) },
+    { "fprs", offsetof(CPUSPARCState, fprs) },
+#endif
+#endif
+    { NULL },
+};
+
+static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
+expr_error(Monitor *mon, const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    monitor_vprintf(mon, fmt, ap);
+    monitor_printf(mon, "\n");
+    va_end(ap);
+    siglongjmp(expr_env, 1);
+}
+
+/* return 0 if OK, -1 if not found */
+static int get_monitor_def(target_long *pval, const char *name)
+{
+    const MonitorDef *md;
+    void *ptr;
+
+    for(md = monitor_defs; md->name != NULL; md++) {
+        if (compare_cmd(name, md->name)) {
+            if (md->get_value) {
+                *pval = md->get_value(md, md->offset);
+            } else {
+                CPUArchState *env = mon_get_cpu_env();
+                ptr = (uint8_t *)env + md->offset;
+                switch(md->type) {
+                case MD_I32:
+                    *pval = *(int32_t *)ptr;
+                    break;
+                case MD_TLONG:
+                    *pval = *(target_long *)ptr;
+                    break;
+                default:
+                    *pval = 0;
+                    break;
+                }
+            }
+            return 0;
+        }
+    }
+    return -1;
+}
+
+static void next(void)
+{
+    if (*pch != '\0') {
+        pch++;
+        while (qemu_isspace(*pch))
+            pch++;
+    }
+}
+
+static int64_t expr_sum(Monitor *mon);
+
+static int64_t expr_unary(Monitor *mon)
+{
+    int64_t n;
+    char *p;
+    int ret;
+
+    switch(*pch) {
+    case '+':
+        next();
+        n = expr_unary(mon);
+        break;
+    case '-':
+        next();
+        n = -expr_unary(mon);
+        break;
+    case '~':
+        next();
+        n = ~expr_unary(mon);
+        break;
+    case '(':
+        next();
+        n = expr_sum(mon);
+        if (*pch != ')') {
+            expr_error(mon, "')' expected");
+        }
+        next();
+        break;
+    case '\'':
+        pch++;
+        if (*pch == '\0')
+            expr_error(mon, "character constant expected");
+        n = *pch;
+        pch++;
+        if (*pch != '\'')
+            expr_error(mon, "missing terminating \' character");
+        next();
+        break;
+    case '$':
+        {
+            char buf[128], *q;
+            target_long reg=0;
+
+            pch++;
+            q = buf;
+            while ((*pch >= 'a' && *pch <= 'z') ||
+                   (*pch >= 'A' && *pch <= 'Z') ||
+                   (*pch >= '0' && *pch <= '9') ||
+                   *pch == '_' || *pch == '.') {
+                if ((q - buf) < sizeof(buf) - 1)
+                    *q++ = *pch;
+                pch++;
+            }
+            while (qemu_isspace(*pch))
+                pch++;
+            *q = 0;
+            ret = get_monitor_def(&reg, buf);
+            if (ret < 0)
+                expr_error(mon, "unknown register");
+            n = reg;
+        }
+        break;
+    case '\0':
+        expr_error(mon, "unexpected end of expression");
+        n = 0;
+        break;
+    default:
+        errno = 0;
+        n = strtoull(pch, &p, 0);
+        if (errno == ERANGE) {
+            expr_error(mon, "number too large");
+        }
+        if (pch == p) {
+            expr_error(mon, "invalid char '%c' in expression", *p);
+        }
+        pch = p;
+        while (qemu_isspace(*pch))
+            pch++;
+        break;
+    }
+    return n;
+}
+
+
+static int64_t expr_prod(Monitor *mon)
+{
+    int64_t val, val2;
+    int op;
+
+    val = expr_unary(mon);
+    for(;;) {
+        op = *pch;
+        if (op != '*' && op != '/' && op != '%')
+            break;
+        next();
+        val2 = expr_unary(mon);
+        switch(op) {
+        default:
+        case '*':
+            val *= val2;
+            break;
+        case '/':
+        case '%':
+            if (val2 == 0)
+                expr_error(mon, "division by zero");
+            if (op == '/')
+                val /= val2;
+            else
+                val %= val2;
+            break;
+        }
+    }
+    return val;
+}
+
+static int64_t expr_logic(Monitor *mon)
+{
+    int64_t val, val2;
+    int op;
+
+    val = expr_prod(mon);
+    for(;;) {
+        op = *pch;
+        if (op != '&' && op != '|' && op != '^')
+            break;
+        next();
+        val2 = expr_prod(mon);
+        switch(op) {
+        default:
+        case '&':
+            val &= val2;
+            break;
+        case '|':
+            val |= val2;
+            break;
+        case '^':
+            val ^= val2;
+            break;
+        }
+    }
+    return val;
+}
+
+static int64_t expr_sum(Monitor *mon)
+{
+    int64_t val, val2;
+    int op;
+
+    val = expr_logic(mon);
+    for(;;) {
+        op = *pch;
+        if (op != '+' && op != '-')
+            break;
+        next();
+        val2 = expr_logic(mon);
+        if (op == '+')
+            val += val2;
+        else
+            val -= val2;
+    }
+    return val;
+}
+
+static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
+{
+    pch = *pp;
+    if (sigsetjmp(expr_env, 0)) {
+        *pp = pch;
+        return -1;
+    }
+    while (qemu_isspace(*pch))
+        pch++;
+    *pval = expr_sum(mon);
+    *pp = pch;
+    return 0;
+}
+
+static int get_double(Monitor *mon, double *pval, const char **pp)
+{
+    const char *p = *pp;
+    char *tailp;
+    double d;
+
+    d = strtod(p, &tailp);
+    if (tailp == p) {
+        monitor_printf(mon, "Number expected\n");
+        return -1;
+    }
+    if (d != d || d - d != 0) {
+        /* NaN or infinity */
+        monitor_printf(mon, "Bad number\n");
+        return -1;
+    }
+    *pval = d;
+    *pp = tailp;
+    return 0;
+}
+
+/*
+ * Store the command-name in cmdname, and return a pointer to
+ * the remaining of the command string.
+ */
+static const char *get_command_name(const char *cmdline,
+                                    char *cmdname, size_t nlen)
+{
+    size_t len;
+    const char *p, *pstart;
+
+    p = cmdline;
+    while (qemu_isspace(*p))
+        p++;
+    if (*p == '\0')
+        return NULL;
+    pstart = p;
+    while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
+        p++;
+    len = p - pstart;
+    if (len > nlen - 1)
+        len = nlen - 1;
+    memcpy(cmdname, pstart, len);
+    cmdname[len] = '\0';
+    return p;
+}
+
+/**
+ * Read key of 'type' into 'key' and return the current
+ * 'type' pointer.
+ */
+static char *key_get_info(const char *type, char **key)
+{
+    size_t len;
+    char *p, *str;
+
+    if (*type == ',')
+        type++;
+
+    p = strchr(type, ':');
+    if (!p) {
+        *key = NULL;
+        return NULL;
+    }
+    len = p - type;
+
+    str = g_malloc(len + 1);
+    memcpy(str, type, len);
+    str[len] = '\0';
+
+    *key = str;
+    return ++p;
+}
+
+static int default_fmt_format = 'x';
+static int default_fmt_size = 4;
+
+static int is_valid_option(const char *c, const char *typestr)
+{
+    char option[3];
+  
+    option[0] = '-';
+    option[1] = *c;
+    option[2] = '\0';
+  
+    typestr = strstr(typestr, option);
+    return (typestr != NULL);
+}
+
+static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
+                                              const char *cmdname)
+{
+    const mon_cmd_t *cmd;
+
+    for (cmd = disp_table; cmd->name != NULL; cmd++) {
+        if (compare_cmd(cmdname, cmd->name)) {
+            return cmd;
+        }
+    }
+
+    return NULL;
+}
+
+static const mon_cmd_t *qmp_find_cmd(const char *cmdname)
+{
+    return search_dispatch_table(qmp_cmds, cmdname);
+}
+
+/*
+ * Parse command name from @cmdp according to command table @table.
+ * If blank, return NULL.
+ * Else, if no valid command can be found, report to @mon, and return
+ * NULL.
+ * Else, change @cmdp to point right behind the name, and return its
+ * command table entry.
+ * Do not assume the return value points into @table!  It doesn't when
+ * the command is found in a sub-command table.
+ */
+static const mon_cmd_t *monitor_parse_command(Monitor *mon,
+                                              const char **cmdp,
+                                              mon_cmd_t *table)
+{
+    const char *p;
+    const mon_cmd_t *cmd;
+    char cmdname[256];
+
+    /* extract the command name */
+    p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
+    if (!p)
+        return NULL;
+
+    cmd = search_dispatch_table(table, cmdname);
+    if (!cmd) {
+        monitor_printf(mon, "unknown command: '%.*s'\n",
+                       (int)(p - *cmdp), *cmdp);
+        return NULL;
+    }
+
+    /* filter out following useless space */
+    while (qemu_isspace(*p)) {
+        p++;
+    }
+
+    *cmdp = p;
+    /* search sub command */
+    if (cmd->sub_table != NULL && *p != '\0') {
+        return monitor_parse_command(mon, cmdp, cmd->sub_table);
+    }
+
+    return cmd;
+}
+
+/*
+ * Parse arguments for @cmd.
+ * If it can't be parsed, report to @mon, and return NULL.
+ * Else, insert command arguments into a QDict, and return it.
+ * Note: On success, caller has to free the QDict structure.
+ */
+
+static QDict *monitor_parse_arguments(Monitor *mon,
+                                      const char **endp,
+                                      const mon_cmd_t *cmd)
+{
+    const char *typestr;
+    char *key;
+    int c;
+    const char *p = *endp;
+    char buf[1024];
+    QDict *qdict = qdict_new();
+
+    /* parse the parameters */
+    typestr = cmd->args_type;
+    for(;;) {
+        typestr = key_get_info(typestr, &key);
+        if (!typestr)
+            break;
+        c = *typestr;
+        typestr++;
+        switch(c) {
+        case 'F':
+        case 'B':
+        case 's':
+            {
+                int ret;
+
+                while (qemu_isspace(*p))
+                    p++;
+                if (*typestr == '?') {
+                    typestr++;
+                    if (*p == '\0') {
+                        /* no optional string: NULL argument */
+                        break;
+                    }
+                }
+                ret = get_str(buf, sizeof(buf), &p);
+                if (ret < 0) {
+                    switch(c) {
+                    case 'F':
+                        monitor_printf(mon, "%s: filename expected\n",
+                                       cmd->name);
+                        break;
+                    case 'B':
+                        monitor_printf(mon, "%s: block device name expected\n",
+                                       cmd->name);
+                        break;
+                    default:
+                        monitor_printf(mon, "%s: string expected\n", cmd->name);
+                        break;
+                    }
+                    goto fail;
+                }
+                qdict_put(qdict, key, qstring_from_str(buf));
+            }
+            break;
+        case 'O':
+            {
+                QemuOptsList *opts_list;
+                QemuOpts *opts;
+
+                opts_list = qemu_find_opts(key);
+                if (!opts_list || opts_list->desc->name) {
+                    goto bad_type;
+                }
+                while (qemu_isspace(*p)) {
+                    p++;
+                }
+                if (!*p)
+                    break;
+                if (get_str(buf, sizeof(buf), &p) < 0) {
+                    goto fail;
+                }
+                opts = qemu_opts_parse_noisily(opts_list, buf, true);
+                if (!opts) {
+                    goto fail;
+                }
+                qemu_opts_to_qdict(opts, qdict);
+                qemu_opts_del(opts);
+            }
+            break;
+        case '/':
+            {
+                int count, format, size;
+
+                while (qemu_isspace(*p))
+                    p++;
+                if (*p == '/') {
+                    /* format found */
+                    p++;
+                    count = 1;
+                    if (qemu_isdigit(*p)) {
+                        count = 0;
+                        while (qemu_isdigit(*p)) {
+                            count = count * 10 + (*p - '0');
+                            p++;
+                        }
+                    }
+                    size = -1;
+                    format = -1;
+                    for(;;) {
+                        switch(*p) {
+                        case 'o':
+                        case 'd':
+                        case 'u':
+                        case 'x':
+                        case 'i':
+                        case 'c':
+                            format = *p++;
+                            break;
+                        case 'b':
+                            size = 1;
+                            p++;
+                            break;
+                        case 'h':
+                            size = 2;
+                            p++;
+                            break;
+                        case 'w':
+                            size = 4;
+                            p++;
+                            break;
+                        case 'g':
+                        case 'L':
+                            size = 8;
+                            p++;
+                            break;
+                        default:
+                            goto next;
+                        }
+                    }
+                next:
+                    if (*p != '\0' && !qemu_isspace(*p)) {
+                        monitor_printf(mon, "invalid char in format: '%c'\n",
+                                       *p);
+                        goto fail;
+                    }
+                    if (format < 0)
+                        format = default_fmt_format;
+                    if (format != 'i') {
+                        /* for 'i', not specifying a size gives -1 as size */
+                        if (size < 0)
+                            size = default_fmt_size;
+                        default_fmt_size = size;
+                    }
+                    default_fmt_format = format;
+                } else {
+                    count = 1;
+                    format = default_fmt_format;
+                    if (format != 'i') {
+                        size = default_fmt_size;
+                    } else {
+                        size = -1;
+                    }
+                }
+                qdict_put(qdict, "count", qint_from_int(count));
+                qdict_put(qdict, "format", qint_from_int(format));
+                qdict_put(qdict, "size", qint_from_int(size));
+            }
+            break;
+        case 'i':
+        case 'l':
+        case 'M':
+            {
+                int64_t val;
+
+                while (qemu_isspace(*p))
+                    p++;
+                if (*typestr == '?' || *typestr == '.') {
+                    if (*typestr == '?') {
+                        if (*p == '\0') {
+                            typestr++;
+                            break;
+                        }
+                    } else {
+                        if (*p == '.') {
+                            p++;
+                            while (qemu_isspace(*p))
+                                p++;
+                        } else {
+                            typestr++;
+                            break;
+                        }
+                    }
+                    typestr++;
+                }
+                if (get_expr(mon, &val, &p))
+                    goto fail;
+                /* Check if 'i' is greater than 32-bit */
+                if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
+                    monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
+                    monitor_printf(mon, "integer is for 32-bit values\n");
+                    goto fail;
+                } else if (c == 'M') {
+                    if (val < 0) {
+                        monitor_printf(mon, "enter a positive value\n");
+                        goto fail;
+                    }
+                    val <<= 20;
+                }
+                qdict_put(qdict, key, qint_from_int(val));
+            }
+            break;
+        case 'o':
+            {
+                int64_t val;
+                char *end;
+
+                while (qemu_isspace(*p)) {
+                    p++;
+                }
+                if (*typestr == '?') {
+                    typestr++;
+                    if (*p == '\0') {
+                        break;
+                    }
+                }
+                val = strtosz(p, &end);
+                if (val < 0) {
+                    monitor_printf(mon, "invalid size\n");
+                    goto fail;
+                }
+                qdict_put(qdict, key, qint_from_int(val));
+                p = end;
+            }
+            break;
+        case 'T':
+            {
+                double val;
+
+                while (qemu_isspace(*p))
+                    p++;
+                if (*typestr == '?') {
+                    typestr++;
+                    if (*p == '\0') {
+                        break;
+                    }
+                }
+                if (get_double(mon, &val, &p) < 0) {
+                    goto fail;
+                }
+                if (p[0] && p[1] == 's') {
+                    switch (*p) {
+                    case 'm':
+                        val /= 1e3; p += 2; break;
+                    case 'u':
+                        val /= 1e6; p += 2; break;
+                    case 'n':
+                        val /= 1e9; p += 2; break;
+                    }
+                }
+                if (*p && !qemu_isspace(*p)) {
+                    monitor_printf(mon, "Unknown unit suffix\n");
+                    goto fail;
+                }
+                qdict_put(qdict, key, qfloat_from_double(val));
+            }
+            break;
+        case 'b':
+            {
+                const char *beg;
+                bool val;
+
+                while (qemu_isspace(*p)) {
+                    p++;
+                }
+                beg = p;
+                while (qemu_isgraph(*p)) {
+                    p++;
+                }
+                if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
+                    val = true;
+                } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
+                    val = false;
+                } else {
+                    monitor_printf(mon, "Expected 'on' or 'off'\n");
+                    goto fail;
+                }
+                qdict_put(qdict, key, qbool_from_bool(val));
+            }
+            break;
+        case '-':
+            {
+                const char *tmp = p;
+                int skip_key = 0;
+                /* option */
+
+                c = *typestr++;
+                if (c == '\0')
+                    goto bad_type;
+                while (qemu_isspace(*p))
+                    p++;
+                if (*p == '-') {
+                    p++;
+                    if(c != *p) {
+                        if(!is_valid_option(p, typestr)) {
+                  
+                            monitor_printf(mon, "%s: unsupported option -%c\n",
+                                           cmd->name, *p);
+                            goto fail;
+                        } else {
+                            skip_key = 1;
+                        }
+                    }
+                    if(skip_key) {
+                        p = tmp;
+                    } else {
+                        /* has option */
+                        p++;
+                        qdict_put(qdict, key, qbool_from_bool(true));
+                    }
+                }
+            }
+            break;
+        case 'S':
+            {
+                /* package all remaining string */
+                int len;
+
+                while (qemu_isspace(*p)) {
+                    p++;
+                }
+                if (*typestr == '?') {
+                    typestr++;
+                    if (*p == '\0') {
+                        /* no remaining string: NULL argument */
+                        break;
+                    }
+                }
+                len = strlen(p);
+                if (len <= 0) {
+                    monitor_printf(mon, "%s: string expected\n",
+                                   cmd->name);
+                    goto fail;
+                }
+                qdict_put(qdict, key, qstring_from_str(p));
+                p += len;
+            }
+            break;
+        default:
+        bad_type:
+            monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
+            goto fail;
+        }
+        g_free(key);
+        key = NULL;
+    }
+    /* check that all arguments were parsed */
+    while (qemu_isspace(*p))
+        p++;
+    if (*p != '\0') {
+        monitor_printf(mon, "%s: extraneous characters at the end of line\n",
+                       cmd->name);
+        goto fail;
+    }
+
+    return qdict;
+
+fail:
+    QDECREF(qdict);
+    g_free(key);
+    return NULL;
+}
+
+static void handle_hmp_command(Monitor *mon, const char *cmdline)
+{
+    QDict *qdict;
+    const mon_cmd_t *cmd;
+
+    cmd = monitor_parse_command(mon, &cmdline, mon->cmd_table);
+    if (!cmd) {
+        return;
+    }
+
+    qdict = monitor_parse_arguments(mon, &cmdline, cmd);
+    if (!qdict) {
+        monitor_printf(mon, "Try \"help %s\" for more information\n",
+                       cmd->name);
+        return;
+    }
+
+    cmd->mhandler.cmd(mon, qdict);
+    QDECREF(qdict);
+}
+
+static void cmd_completion(Monitor *mon, const char *name, const char *list)
+{
+    const char *p, *pstart;
+    char cmd[128];
+    int len;
+
+    p = list;
+    for(;;) {
+        pstart = p;
+        p = strchr(p, '|');
+        if (!p)
+            p = pstart + strlen(pstart);
+        len = p - pstart;
+        if (len > sizeof(cmd) - 2)
+            len = sizeof(cmd) - 2;
+        memcpy(cmd, pstart, len);
+        cmd[len] = '\0';
+        if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
+            readline_add_completion(mon->rs, cmd);
+        }
+        if (*p == '\0')
+            break;
+        p++;
+    }
+}
+
+static void file_completion(Monitor *mon, const char *input)
+{
+    DIR *ffs;
+    struct dirent *d;
+    char path[1024];
+    char file[1024], file_prefix[1024];
+    int input_path_len;
+    const char *p;
+
+    p = strrchr(input, '/');
+    if (!p) {
+        input_path_len = 0;
+        pstrcpy(file_prefix, sizeof(file_prefix), input);
+        pstrcpy(path, sizeof(path), ".");
+    } else {
+        input_path_len = p - input + 1;
+        memcpy(path, input, input_path_len);
+        if (input_path_len > sizeof(path) - 1)
+            input_path_len = sizeof(path) - 1;
+        path[input_path_len] = '\0';
+        pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
+    }
+
+    ffs = opendir(path);
+    if (!ffs)
+        return;
+    for(;;) {
+        struct stat sb;
+        d = readdir(ffs);
+        if (!d)
+            break;
+
+        if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
+            continue;
+        }
+
+        if (strstart(d->d_name, file_prefix, NULL)) {
+            memcpy(file, input, input_path_len);
+            if (input_path_len < sizeof(file))
+                pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
+                        d->d_name);
+            /* stat the file to find out if it's a directory.
+             * In that case add a slash to speed up typing long paths
+             */
+            if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
+                pstrcat(file, sizeof(file), "/");
+            }
+            readline_add_completion(mon->rs, file);
+        }
+    }
+    closedir(ffs);
+}
+
+static const char *next_arg_type(const char *typestr)
+{
+    const char *p = strchr(typestr, ':');
+    return (p != NULL ? ++p : typestr);
+}
+
+static void add_completion_option(ReadLineState *rs, const char *str,
+                                  const char *option)
+{
+    if (!str || !option) {
+        return;
+    }
+    if (!strncmp(option, str, strlen(str))) {
+        readline_add_completion(rs, option);
+    }
+}
+
+void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+    ChardevBackendInfoList *list, *start;
+
+    if (nb_args != 2) {
+        return;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+
+    start = list = qmp_query_chardev_backends(NULL);
+    while (list) {
+        const char *chr_name = list->value->name;
+
+        if (!strncmp(chr_name, str, len)) {
+            readline_add_completion(rs, chr_name);
+        }
+        list = list->next;
+    }
+    qapi_free_ChardevBackendInfoList(start);
+}
+
+void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+    int i;
+
+    if (nb_args != 2) {
+        return;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    for (i = 0; NetClientOptionsKind_lookup[i]; i++) {
+        add_completion_option(rs, str, NetClientOptionsKind_lookup[i]);
+    }
+}
+
+void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    GSList *list, *elt;
+    size_t len;
+
+    if (nb_args != 2) {
+        return;
+    }
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    list = elt = object_class_get_list(TYPE_DEVICE, false);
+    while (elt) {
+        const char *name;
+        DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
+                                             TYPE_DEVICE);
+        name = object_class_get_name(OBJECT_CLASS(dc));
+
+        if (!dc->cannot_instantiate_with_device_add_yet
+            && !strncmp(name, str, len)) {
+            readline_add_completion(rs, name);
+        }
+        elt = elt->next;
+    }
+    g_slist_free(list);
+}
+
+void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    GSList *list, *elt;
+    size_t len;
+
+    if (nb_args != 2) {
+        return;
+    }
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
+    while (elt) {
+        const char *name;
+
+        name = object_class_get_name(OBJECT_CLASS(elt->data));
+        if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
+            readline_add_completion(rs, name);
+        }
+        elt = elt->next;
+    }
+    g_slist_free(list);
+}
+
+static void peripheral_device_del_completion(ReadLineState *rs,
+                                             const char *str, size_t len)
+{
+    Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
+    GSList *list, *item;
+
+    list = qdev_build_hotpluggable_device_list(peripheral);
+    if (!list) {
+        return;
+    }
+
+    for (item = list; item; item = g_slist_next(item)) {
+        DeviceState *dev = item->data;
+
+        if (dev->id && !strncmp(str, dev->id, len)) {
+            readline_add_completion(rs, dev->id);
+        }
+    }
+
+    g_slist_free(list);
+}
+
+void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+    ChardevInfoList *list, *start;
+
+    if (nb_args != 2) {
+        return;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+
+    start = list = qmp_query_chardev(NULL);
+    while (list) {
+        ChardevInfo *chr = list->value;
+
+        if (!strncmp(chr->label, str, len)) {
+            readline_add_completion(rs, chr->label);
+        }
+        list = list->next;
+    }
+    qapi_free_ChardevInfoList(start);
+}
+
+static void ringbuf_completion(ReadLineState *rs, const char *str)
+{
+    size_t len;
+    ChardevInfoList *list, *start;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+
+    start = list = qmp_query_chardev(NULL);
+    while (list) {
+        ChardevInfo *chr_info = list->value;
+
+        if (!strncmp(chr_info->label, str, len)) {
+            CharDriverState *chr = qemu_chr_find(chr_info->label);
+            if (chr && chr_is_ringbuf(chr)) {
+                readline_add_completion(rs, chr_info->label);
+            }
+        }
+        list = list->next;
+    }
+    qapi_free_ChardevInfoList(start);
+}
+
+void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    if (nb_args != 2) {
+        return;
+    }
+    ringbuf_completion(rs, str);
+}
+
+void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+
+    if (nb_args != 2) {
+        return;
+    }
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    peripheral_device_del_completion(rs, str, len);
+}
+
+void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    ObjectPropertyInfoList *list, *start;
+    size_t len;
+
+    if (nb_args != 2) {
+        return;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+
+    start = list = qmp_qom_list("/objects", NULL);
+    while (list) {
+        ObjectPropertyInfo *info = list->value;
+
+        if (!strncmp(info->type, "child<", 5)
+            && !strncmp(info->name, str, len)) {
+            readline_add_completion(rs, info->name);
+        }
+        list = list->next;
+    }
+    qapi_free_ObjectPropertyInfoList(start);
+}
+
+void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    int i;
+    char *sep;
+    size_t len;
+
+    if (nb_args != 2) {
+        return;
+    }
+    sep = strrchr(str, '-');
+    if (sep) {
+        str = sep + 1;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    for (i = 0; i < Q_KEY_CODE_MAX; i++) {
+        if (!strncmp(str, QKeyCode_lookup[i], len)) {
+            readline_add_completion(rs, QKeyCode_lookup[i]);
+        }
+    }
+}
+
+void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    size_t len;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    if (nb_args == 2) {
+        NetClientState *ncs[MAX_QUEUE_NUM];
+        int count, i;
+        count = qemu_find_net_clients_except(NULL, ncs,
+                                             NET_CLIENT_OPTIONS_KIND_NONE,
+                                             MAX_QUEUE_NUM);
+        for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+            const char *name = ncs[i]->name;
+            if (!strncmp(str, name, len)) {
+                readline_add_completion(rs, name);
+            }
+        }
+    } else if (nb_args == 3) {
+        add_completion_option(rs, str, "on");
+        add_completion_option(rs, str, "off");
+    }
+}
+
+void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    int len, count, i;
+    NetClientState *ncs[MAX_QUEUE_NUM];
+
+    if (nb_args != 2) {
+        return;
+    }
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_OPTIONS_KIND_NIC,
+                                         MAX_QUEUE_NUM);
+    for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+        QemuOpts *opts;
+        const char *name = ncs[i]->name;
+        if (strncmp(str, name, len)) {
+            continue;
+        }
+        opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
+        if (opts) {
+            readline_add_completion(rs, name);
+        }
+    }
+}
+
+void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    int i;
+
+    if (nb_args != 2) {
+        return;
+    }
+    readline_set_completion_index(rs, strlen(str));
+    for (i = 0; WatchdogExpirationAction_lookup[i]; i++) {
+        add_completion_option(rs, str, WatchdogExpirationAction_lookup[i]);
+    }
+}
+
+void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
+                                       const char *str)
+{
+    size_t len;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    if (nb_args == 2) {
+        int i;
+        for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) {
+            const char *name = MigrationCapability_lookup[i];
+            if (!strncmp(str, name, len)) {
+                readline_add_completion(rs, name);
+            }
+        }
+    } else if (nb_args == 3) {
+        add_completion_option(rs, str, "on");
+        add_completion_option(rs, str, "off");
+    }
+}
+
+void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
+                                      const char *str)
+{
+    size_t len;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    if (nb_args == 2) {
+        int i;
+        for (i = 0; i < MIGRATION_PARAMETER_MAX; i++) {
+            const char *name = MigrationParameter_lookup[i];
+            if (!strncmp(str, name, len)) {
+                readline_add_completion(rs, name);
+            }
+        }
+    }
+}
+
+void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    int i;
+    size_t len;
+    if (nb_args != 2) {
+        return;
+    }
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    for (i = 0; host_net_devices[i]; i++) {
+        if (!strncmp(host_net_devices[i], str, len)) {
+            readline_add_completion(rs, host_net_devices[i]);
+        }
+    }
+}
+
+void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    NetClientState *ncs[MAX_QUEUE_NUM];
+    int count, i, len;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    if (nb_args == 2) {
+        count = qemu_find_net_clients_except(NULL, ncs,
+                                             NET_CLIENT_OPTIONS_KIND_NONE,
+                                             MAX_QUEUE_NUM);
+        for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+            int id;
+            char name[16];
+
+            if (net_hub_id_for_client(ncs[i], &id)) {
+                continue;
+            }
+            snprintf(name, sizeof(name), "%d", id);
+            if (!strncmp(str, name, len)) {
+                readline_add_completion(rs, name);
+            }
+        }
+        return;
+    } else if (nb_args == 3) {
+        count = qemu_find_net_clients_except(NULL, ncs,
+                                             NET_CLIENT_OPTIONS_KIND_NIC,
+                                             MAX_QUEUE_NUM);
+        for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+            int id;
+            const char *name;
+
+            if (ncs[i]->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT ||
+                net_hub_id_for_client(ncs[i], &id)) {
+                continue;
+            }
+            name = ncs[i]->name;
+            if (!strncmp(str, name, len)) {
+                readline_add_completion(rs, name);
+            }
+        }
+        return;
+    }
+}
+
+static void vm_completion(ReadLineState *rs, const char *str)
+{
+    size_t len;
+    BlockDriverState *bs = NULL;
+
+    len = strlen(str);
+    readline_set_completion_index(rs, len);
+    while ((bs = bdrv_next(bs))) {
+        SnapshotInfoList *snapshots, *snapshot;
+
+        if (!bdrv_can_snapshot(bs)) {
+            continue;
+        }
+        if (bdrv_query_snapshot_info_list(bs, &snapshots, NULL)) {
+            continue;
+        }
+        snapshot = snapshots;
+        while (snapshot) {
+            char *completion = snapshot->value->name;
+            if (!strncmp(str, completion, len)) {
+                readline_add_completion(rs, completion);
+            }
+            completion = snapshot->value->id;
+            if (!strncmp(str, completion, len)) {
+                readline_add_completion(rs, completion);
+            }
+            snapshot = snapshot->next;
+        }
+        qapi_free_SnapshotInfoList(snapshots);
+    }
+
+}
+
+void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    if (nb_args == 2) {
+        vm_completion(rs, str);
+    }
+}
+
+void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+    if (nb_args == 2) {
+        vm_completion(rs, str);
+    }
+}
+
+static void monitor_find_completion_by_table(Monitor *mon,
+                                             const mon_cmd_t *cmd_table,
+                                             char **args,
+                                             int nb_args)
+{
+    const char *cmdname;
+    int i;
+    const char *ptype, *str, *name;
+    const mon_cmd_t *cmd;
+    BlockDriverState *bs;
+
+    if (nb_args <= 1) {
+        /* command completion */
+        if (nb_args == 0)
+            cmdname = "";
+        else
+            cmdname = args[0];
+        readline_set_completion_index(mon->rs, strlen(cmdname));
+        for (cmd = cmd_table; cmd->name != NULL; cmd++) {
+            cmd_completion(mon, cmdname, cmd->name);
+        }
+    } else {
+        /* find the command */
+        for (cmd = cmd_table; cmd->name != NULL; cmd++) {
+            if (compare_cmd(args[0], cmd->name)) {
+                break;
+            }
+        }
+        if (!cmd->name) {
+            return;
+        }
+
+        if (cmd->sub_table) {
+            /* do the job again */
+            monitor_find_completion_by_table(mon, cmd->sub_table,
+                                             &args[1], nb_args - 1);
+            return;
+        }
+        if (cmd->command_completion) {
+            cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
+            return;
+        }
+
+        ptype = next_arg_type(cmd->args_type);
+        for(i = 0; i < nb_args - 2; i++) {
+            if (*ptype != '\0') {
+                ptype = next_arg_type(ptype);
+                while (*ptype == '?')
+                    ptype = next_arg_type(ptype);
+            }
+        }
+        str = args[nb_args - 1];
+        while (*ptype == '-' && ptype[1] != '\0') {
+            ptype = next_arg_type(ptype);
+        }
+        switch(*ptype) {
+        case 'F':
+            /* file completion */
+            readline_set_completion_index(mon->rs, strlen(str));
+            file_completion(mon, str);
+            break;
+        case 'B':
+            /* block device name completion */
+            readline_set_completion_index(mon->rs, strlen(str));
+            for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
+                name = bdrv_get_device_name(bs);
+                if (str[0] == '\0' ||
+                    !strncmp(name, str, strlen(str))) {
+                    readline_add_completion(mon->rs, name);
+                }
+            }
+            break;
+        case 's':
+        case 'S':
+            if (!strcmp(cmd->name, "help|?")) {
+                monitor_find_completion_by_table(mon, cmd_table,
+                                                 &args[1], nb_args - 1);
+            }
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+static void monitor_find_completion(void *opaque,
+                                    const char *cmdline)
+{
+    Monitor *mon = opaque;
+    char *args[MAX_ARGS];
+    int nb_args, len;
+
+    /* 1. parse the cmdline */
+    if (parse_cmdline(cmdline, &nb_args, args) < 0) {
+        return;
+    }
+
+    /* if the line ends with a space, it means we want to complete the
+       next arg */
+    len = strlen(cmdline);
+    if (len > 0 && qemu_isspace(cmdline[len - 1])) {
+        if (nb_args >= MAX_ARGS) {
+            goto cleanup;
+        }
+        args[nb_args++] = g_strdup("");
+    }
+
+    /* 2. auto complete according to args */
+    monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
+
+cleanup:
+    free_cmdline_args(args, nb_args);
+}
+
+static int monitor_can_read(void *opaque)
+{
+    Monitor *mon = opaque;
+
+    return (mon->suspend_cnt == 0) ? 1 : 0;
+}
+
+static bool invalid_qmp_mode(const Monitor *mon, const mon_cmd_t *cmd,
+                             Error **errp)
+{
+    bool is_cap = cmd->mhandler.cmd_new == qmp_capabilities;
+
+    if (is_cap && mon->qmp.in_command_mode) {
+        error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
+                  "Capabilities negotiation is already complete, command "
+                  "'%s' ignored", cmd->name);
+        return true;
+    }
+    if (!is_cap && !mon->qmp.in_command_mode) {
+        error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
+                  "Expecting capabilities negotiation with "
+                  "'qmp_capabilities' before command '%s'", cmd->name);
+        return true;
+    }
+    return false;
+}
+
+/*
+ * Argument validation rules:
+ *
+ * 1. The argument must exist in cmd_args qdict
+ * 2. The argument type must be the expected one
+ *
+ * Special case: If the argument doesn't exist in cmd_args and
+ *               the QMP_ACCEPT_UNKNOWNS flag is set, then the
+ *               checking is skipped for it.
+ */
+static void check_client_args_type(const QDict *client_args,
+                                   const QDict *cmd_args, int flags,
+                                   Error **errp)
+{
+    const QDictEntry *ent;
+
+    for (ent = qdict_first(client_args); ent;ent = qdict_next(client_args,ent)){
+        QObject *obj;
+        QString *arg_type;
+        const QObject *client_arg = qdict_entry_value(ent);
+        const char *client_arg_name = qdict_entry_key(ent);
+
+        obj = qdict_get(cmd_args, client_arg_name);
+        if (!obj) {
+            if (flags & QMP_ACCEPT_UNKNOWNS) {
+                /* handler accepts unknowns */
+                continue;
+            }
+            /* client arg doesn't exist */
+            error_setg(errp, QERR_INVALID_PARAMETER, client_arg_name);
+            return;
+        }
+
+        arg_type = qobject_to_qstring(obj);
+        assert(arg_type != NULL);
+
+        /* check if argument's type is correct */
+        switch (qstring_get_str(arg_type)[0]) {
+        case 'F':
+        case 'B':
+        case 's':
+            if (qobject_type(client_arg) != QTYPE_QSTRING) {
+                error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
+                           client_arg_name, "string");
+                return;
+            }
+        break;
+        case 'i':
+        case 'l':
+        case 'M':
+        case 'o':
+            if (qobject_type(client_arg) != QTYPE_QINT) {
+                error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
+                           client_arg_name, "int");
+                return;
+            }
+            break;
+        case 'T':
+            if (qobject_type(client_arg) != QTYPE_QINT &&
+                qobject_type(client_arg) != QTYPE_QFLOAT) {
+                error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
+                           client_arg_name, "number");
+                return;
+            }
+            break;
+        case 'b':
+        case '-':
+            if (qobject_type(client_arg) != QTYPE_QBOOL) {
+                error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
+                           client_arg_name, "bool");
+                return;
+            }
+            break;
+        case 'O':
+            assert(flags & QMP_ACCEPT_UNKNOWNS);
+            break;
+        case 'q':
+            /* Any QObject can be passed.  */
+            break;
+        case '/':
+        case '.':
+            /*
+             * These types are not supported by QMP and thus are not
+             * handled here. Fall through.
+             */
+        default:
+            abort();
+        }
+    }
+}
+
+/*
+ * - Check if the client has passed all mandatory args
+ * - Set special flags for argument validation
+ */
+static void check_mandatory_args(const QDict *cmd_args,
+                                 const QDict *client_args, int *flags,
+                                 Error **errp)
+{
+    const QDictEntry *ent;
+
+    for (ent = qdict_first(cmd_args); ent; ent = qdict_next(cmd_args, ent)) {
+        const char *cmd_arg_name = qdict_entry_key(ent);
+        QString *type = qobject_to_qstring(qdict_entry_value(ent));
+        assert(type != NULL);
+
+        if (qstring_get_str(type)[0] == 'O') {
+            assert((*flags & QMP_ACCEPT_UNKNOWNS) == 0);
+            *flags |= QMP_ACCEPT_UNKNOWNS;
+        } else if (qstring_get_str(type)[0] != '-' &&
+                   qstring_get_str(type)[1] != '?' &&
+                   !qdict_haskey(client_args, cmd_arg_name)) {
+            error_setg(errp, QERR_MISSING_PARAMETER, cmd_arg_name);
+            return;
+        }
+    }
+}
+
+static QDict *qdict_from_args_type(const char *args_type)
+{
+    int i;
+    QDict *qdict;
+    QString *key, *type, *cur_qs;
+
+    assert(args_type != NULL);
+
+    qdict = qdict_new();
+
+    if (args_type == NULL || args_type[0] == '\0') {
+        /* no args, empty qdict */
+        goto out;
+    }
+
+    key = qstring_new();
+    type = qstring_new();
+
+    cur_qs = key;
+
+    for (i = 0;; i++) {
+        switch (args_type[i]) {
+            case ',':
+            case '\0':
+                qdict_put(qdict, qstring_get_str(key), type);
+                QDECREF(key);
+                if (args_type[i] == '\0') {
+                    goto out;
+                }
+                type = qstring_new(); /* qdict has ref */
+                cur_qs = key = qstring_new();
+                break;
+            case ':':
+                cur_qs = type;
+                break;
+            default:
+                qstring_append_chr(cur_qs, args_type[i]);
+                break;
+        }
+    }
+
+out:
+    return qdict;
+}
+
+/*
+ * Client argument checking rules:
+ *
+ * 1. Client must provide all mandatory arguments
+ * 2. Each argument provided by the client must be expected
+ * 3. Each argument provided by the client must have the type expected
+ *    by the command
+ */
+static void qmp_check_client_args(const mon_cmd_t *cmd, QDict *client_args,
+                                  Error **errp)
+{
+    Error *err = NULL;
+    int flags;
+    QDict *cmd_args;
+
+    cmd_args = qdict_from_args_type(cmd->args_type);
+
+    flags = 0;
+    check_mandatory_args(cmd_args, client_args, &flags, &err);
+    if (err) {
+        goto out;
+    }
+
+    check_client_args_type(client_args, cmd_args, flags, &err);
+
+out:
+    error_propagate(errp, err);
+    QDECREF(cmd_args);
+}
+
+/*
+ * Input object checking rules
+ *
+ * 1. Input object must be a dict
+ * 2. The "execute" key must exist
+ * 3. The "execute" key must be a string
+ * 4. If the "arguments" key exists, it must be a dict
+ * 5. If the "id" key exists, it can be anything (ie. json-value)
+ * 6. Any argument not listed above is considered invalid
+ */
+static QDict *qmp_check_input_obj(QObject *input_obj, Error **errp)
+{
+    const QDictEntry *ent;
+    int has_exec_key = 0;
+    QDict *input_dict;
+
+    if (qobject_type(input_obj) != QTYPE_QDICT) {
+        error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "object");
+        return NULL;
+    }
+
+    input_dict = qobject_to_qdict(input_obj);
+
+    for (ent = qdict_first(input_dict); ent; ent = qdict_next(input_dict, ent)){
+        const char *arg_name = qdict_entry_key(ent);
+        const QObject *arg_obj = qdict_entry_value(ent);
+
+        if (!strcmp(arg_name, "execute")) {
+            if (qobject_type(arg_obj) != QTYPE_QSTRING) {
+                error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
+                           "execute", "string");
+                return NULL;
+            }
+            has_exec_key = 1;
+        } else if (!strcmp(arg_name, "arguments")) {
+            if (qobject_type(arg_obj) != QTYPE_QDICT) {
+                error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
+                           "arguments", "object");
+                return NULL;
+            }
+        } else if (!strcmp(arg_name, "id")) {
+            /* Any string is acceptable as "id", so nothing to check */
+        } else {
+            error_setg(errp, QERR_QMP_EXTRA_MEMBER, arg_name);
+            return NULL;
+        }
+    }
+
+    if (!has_exec_key) {
+        error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "execute");
+        return NULL;
+    }
+
+    return input_dict;
+}
+
+static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
+{
+    Error *local_err = NULL;
+    QObject *obj, *data;
+    QDict *input, *args;
+    const mon_cmd_t *cmd;
+    const char *cmd_name;
+    Monitor *mon = cur_mon;
+
+    args = input = NULL;
+    data = NULL;
+
+    obj = json_parser_parse(tokens, NULL);
+    if (!obj) {
+        // FIXME: should be triggered in json_parser_parse()
+        error_setg(&local_err, QERR_JSON_PARSING);
+        goto err_out;
+    }
+
+    input = qmp_check_input_obj(obj, &local_err);
+    if (!input) {
+        qobject_decref(obj);
+        goto err_out;
+    }
+
+    mon->qmp.id = qdict_get(input, "id");
+    qobject_incref(mon->qmp.id);
+
+    cmd_name = qdict_get_str(input, "execute");
+    trace_handle_qmp_command(mon, cmd_name);
+    cmd = qmp_find_cmd(cmd_name);
+    if (!cmd) {
+        error_set(&local_err, ERROR_CLASS_COMMAND_NOT_FOUND,
+                  "The command %s has not been found", cmd_name);
+        goto err_out;
+    }
+    if (invalid_qmp_mode(mon, cmd, &local_err)) {
+        goto err_out;
+    }
+
+    obj = qdict_get(input, "arguments");
+    if (!obj) {
+        args = qdict_new();
+    } else {
+        args = qobject_to_qdict(obj);
+        QINCREF(args);
+    }
+
+    qmp_check_client_args(cmd, args, &local_err);
+    if (local_err) {
+        goto err_out;
+    }
+
+    cmd->mhandler.cmd_new(args, &data, &local_err);
+
+err_out:
+    monitor_protocol_emitter(mon, data, local_err);
+    qobject_decref(data);
+    QDECREF(input);
+    QDECREF(args);
+}
+
+static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
+{
+    Monitor *old_mon = cur_mon;
+
+    cur_mon = opaque;
+
+    json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
+
+    cur_mon = old_mon;
+}
+
+static void monitor_read(void *opaque, const uint8_t *buf, int size)
+{
+    Monitor *old_mon = cur_mon;
+    int i;
+
+    cur_mon = opaque;
+
+    if (cur_mon->rs) {
+        for (i = 0; i < size; i++)
+            readline_handle_byte(cur_mon->rs, buf[i]);
+    } else {
+        if (size == 0 || buf[size - 1] != 0)
+            monitor_printf(cur_mon, "corrupted command\n");
+        else
+            handle_hmp_command(cur_mon, (char *)buf);
+    }
+
+    cur_mon = old_mon;
+}
+
+static void monitor_command_cb(void *opaque, const char *cmdline,
+                               void *readline_opaque)
+{
+    Monitor *mon = opaque;
+
+    monitor_suspend(mon);
+    handle_hmp_command(mon, cmdline);
+    monitor_resume(mon);
+}
+
+int monitor_suspend(Monitor *mon)
+{
+    if (!mon->rs)
+        return -ENOTTY;
+    mon->suspend_cnt++;
+    return 0;
+}
+
+void monitor_resume(Monitor *mon)
+{
+    if (!mon->rs)
+        return;
+    if (--mon->suspend_cnt == 0)
+        readline_show_prompt(mon->rs);
+}
+
+static QObject *get_qmp_greeting(void)
+{
+    QObject *ver = NULL;
+
+    qmp_marshal_input_query_version(NULL, &ver, NULL);
+    return qobject_from_jsonf("{'QMP':{'version': %p,'capabilities': []}}",ver);
+}
+
+static void monitor_qmp_event(void *opaque, int event)
+{
+    QObject *data;
+    Monitor *mon = opaque;
+
+    switch (event) {
+    case CHR_EVENT_OPENED:
+        mon->qmp.in_command_mode = false;
+        data = get_qmp_greeting();
+        monitor_json_emitter(mon, data);
+        qobject_decref(data);
+        mon_refcount++;
+        break;
+    case CHR_EVENT_CLOSED:
+        json_message_parser_destroy(&mon->qmp.parser);
+        json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
+        mon_refcount--;
+        monitor_fdsets_cleanup();
+        break;
+    }
+}
+
+static void monitor_event(void *opaque, int event)
+{
+    Monitor *mon = opaque;
+
+    switch (event) {
+    case CHR_EVENT_MUX_IN:
+        qemu_mutex_lock(&mon->out_lock);
+        mon->mux_out = 0;
+        qemu_mutex_unlock(&mon->out_lock);
+        if (mon->reset_seen) {
+            readline_restart(mon->rs);
+            monitor_resume(mon);
+            monitor_flush(mon);
+        } else {
+            mon->suspend_cnt = 0;
+        }
+        break;
+
+    case CHR_EVENT_MUX_OUT:
+        if (mon->reset_seen) {
+            if (mon->suspend_cnt == 0) {
+                monitor_printf(mon, "\n");
+            }
+            monitor_flush(mon);
+            monitor_suspend(mon);
+        } else {
+            mon->suspend_cnt++;
+        }
+        qemu_mutex_lock(&mon->out_lock);
+        mon->mux_out = 1;
+        qemu_mutex_unlock(&mon->out_lock);
+        break;
+
+    case CHR_EVENT_OPENED:
+        monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
+                       "information\n", QEMU_VERSION);
+        if (!mon->mux_out) {
+            readline_restart(mon->rs);
+            readline_show_prompt(mon->rs);
+        }
+        mon->reset_seen = 1;
+        mon_refcount++;
+        break;
+
+    case CHR_EVENT_CLOSED:
+        mon_refcount--;
+        monitor_fdsets_cleanup();
+        break;
+    }
+}
+
+static int
+compare_mon_cmd(const void *a, const void *b)
+{
+    return strcmp(((const mon_cmd_t *)a)->name,
+            ((const mon_cmd_t *)b)->name);
+}
+
+static void sortcmdlist(void)
+{
+    int array_num;
+    int elem_size = sizeof(mon_cmd_t);
+
+    array_num = sizeof(mon_cmds)/elem_size-1;
+    qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
+
+    array_num = sizeof(info_cmds)/elem_size-1;
+    qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
+}
+
+
+/*
+ * Local variables:
+ *  c-indent-level: 4
+ *  c-basic-offset: 4
+ *  tab-width: 8
+ * End:
+ */
+
+/* These functions just adapt the readline interface in a typesafe way.  We
+ * could cast function pointers but that discards compiler checks.
+ */
+static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
+                                                       const char *fmt, ...)
+{
+    va_list ap;
+    va_start(ap, fmt);
+    monitor_vprintf(opaque, fmt, ap);
+    va_end(ap);
+}
+
+static void monitor_readline_flush(void *opaque)
+{
+    monitor_flush(opaque);
+}
+
+static void __attribute__((constructor)) monitor_lock_init(void)
+{
+    qemu_mutex_init(&monitor_lock);
+}
+
+void monitor_init(CharDriverState *chr, int flags)
+{
+    static int is_first_init = 1;
+    Monitor *mon;
+
+    if (is_first_init) {
+        monitor_qapi_event_init();
+        sortcmdlist();
+        is_first_init = 0;
+    }
+
+    mon = g_malloc(sizeof(*mon));
+    monitor_data_init(mon);
+
+    mon->chr = chr;
+    mon->flags = flags;
+    if (flags & MONITOR_USE_READLINE) {
+        mon->rs = readline_init(monitor_readline_printf,
+                                monitor_readline_flush,
+                                mon,
+                                monitor_find_completion);
+        monitor_read_command(mon, 0);
+    }
+
+    if (monitor_is_qmp(mon)) {
+        qemu_chr_add_handlers(chr, monitor_can_read, monitor_qmp_read,
+                              monitor_qmp_event, mon);
+        qemu_chr_fe_set_echo(chr, true);
+        json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
+    } else {
+        qemu_chr_add_handlers(chr, monitor_can_read, monitor_read,
+                              monitor_event, mon);
+    }
+
+    qemu_mutex_lock(&monitor_lock);
+    QLIST_INSERT_HEAD(&mon_list, mon, entry);
+    qemu_mutex_unlock(&monitor_lock);
+}
+
+static void bdrv_password_cb(void *opaque, const char *password,
+                             void *readline_opaque)
+{
+    Monitor *mon = opaque;
+    BlockDriverState *bs = readline_opaque;
+    int ret = 0;
+    Error *local_err = NULL;
+
+    bdrv_add_key(bs, password, &local_err);
+    if (local_err) {
+        monitor_printf(mon, "%s\n", error_get_pretty(local_err));
+        error_free(local_err);
+        ret = -EPERM;
+    }
+    if (mon->password_completion_cb)
+        mon->password_completion_cb(mon->password_opaque, ret);
+
+    monitor_read_command(mon, 1);
+}
+
+int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
+                                BlockCompletionFunc *completion_cb,
+                                void *opaque)
+{
+    int err;
+
+    monitor_printf(mon, "%s (%s) is encrypted.\n", bdrv_get_device_name(bs),
+                   bdrv_get_encrypted_filename(bs));
+
+    mon->password_completion_cb = completion_cb;
+    mon->password_opaque = opaque;
+
+    err = monitor_read_password(mon, bdrv_password_cb, bs);
+
+    if (err && completion_cb)
+        completion_cb(opaque, err);
+
+    return err;
+}
+
+int monitor_read_block_device_key(Monitor *mon, const char *device,
+                                  BlockCompletionFunc *completion_cb,
+                                  void *opaque)
+{
+    Error *err = NULL;
+    BlockBackend *blk;
+
+    blk = blk_by_name(device);
+    if (!blk) {
+        monitor_printf(mon, "Device not found %s\n", device);
+        return -1;
+    }
+
+    bdrv_add_key(blk_bs(blk), NULL, &err);
+    if (err) {
+        error_free(err);
+        return monitor_read_bdrv_key_start(mon, blk_bs(blk), completion_cb, opaque);
+    }
+
+    if (completion_cb) {
+        completion_cb(opaque, 0);
+    }
+    return 0;
+}
+
+QemuOptsList qemu_mon_opts = {
+    .name = "mon",
+    .implied_opt_name = "chardev",
+    .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
+    .desc = {
+        {
+            .name = "mode",
+            .type = QEMU_OPT_STRING,
+        },{
+            .name = "chardev",
+            .type = QEMU_OPT_STRING,
+        },{
+            .name = "default",
+            .type = QEMU_OPT_BOOL,
+        },{
+            .name = "pretty",
+            .type = QEMU_OPT_BOOL,
+        },
+        { /* end of list */ }
+    },
+};
+
+#ifndef TARGET_I386
+void qmp_rtc_reset_reinjection(Error **errp)
+{
+    error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
+}
+#endif