gwj / at91sam9263 · Files

/*
 * 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 "hw/hw.h"
#include "hw/usb.h"
#include "hw/pcmcia.h"
#include "hw/pc.h"
#include "hw/pci.h"
#include "gdbstub.h"
#include "net.h"
#include "qemu-char.h"
#include "sysemu.h"
#include "console.h"
#include "block.h"
#include "audio/audio.h"

#include "disas.h"

#include "balloon.h"

#include <dirent.h>

#include "qemu-timer.h"

#include "migration.h"

#include "kvm.h"

//#define DEBUG

//#define DEBUG_COMPLETION

/*
 * Supported types:

 *

 * 'F'          filename

 * 'B'          block device name

 * 's'          string (accept optional quote)

 * 'i'          32 bit integer
 * 'l'          target long (32 or 64 bit)

 * '/'          optional gdb-like print format (like "/10x")
 *
 * '?'          optional type (for 'F', 's' and 'i')
 *
 */

typedef struct term_cmd_t {
    const char *name;

    const char *args_type;

    void *handler;

    const char *params;
    const char *help;
} term_cmd_t;

#define MAX_MON 4
static CharDriverState *monitor_hd[MAX_MON];

static int hide_banner;

static const term_cmd_t term_cmds[];
static const term_cmd_t info_cmds[];

static uint8_t term_outbuf[1024];

static int term_outbuf_index;

static BlockDriverCompletionFunc *password_completion_cb;
static void *password_opaque;

static void monitor_start_input(void);

static CPUState *mon_cpu = NULL;

static void monitor_read_password(ReadLineFunc *readline_func, void *opaque)
{
    readline_start("Password: ", 1, readline_func, opaque);
}

void term_flush(void)
{

    int i;

    if (term_outbuf_index > 0) {

        for (i = 0; i < MAX_MON; i++)
            if (monitor_hd[i] && monitor_hd[i]->focus == 0)
                qemu_chr_write(monitor_hd[i], term_outbuf, term_outbuf_index);

        term_outbuf_index = 0;
    }
}

/* flush at every end of line or if the buffer is full */
void term_puts(const char *str)
{

    char c;

    for(;;) {
        c = *str++;
        if (c == '\0')
            break;

        if (c == '\n')
            term_outbuf[term_outbuf_index++] = '\r';

        term_outbuf[term_outbuf_index++] = c;

        if (term_outbuf_index >= (sizeof(term_outbuf) - 1) ||

            c == '\n')
            term_flush();
    }
}

void term_vprintf(const char *fmt, va_list ap)

{

    char buf[4096];
    vsnprintf(buf, sizeof(buf), fmt, ap);

    term_puts(buf);

}

void term_printf(const char *fmt, ...)

{

    va_list ap;
    va_start(ap, fmt);
    term_vprintf(fmt, ap);
    va_end(ap);

}

void term_print_filename(const char *filename)
{
    int i;

    for (i = 0; filename[i]; i++) {
	switch (filename[i]) {
	case ' ':
	case '"':
	case '\\':
	    term_printf("\\%c", filename[i]);
	    break;
	case '\t':
	    term_printf("\\t");
	    break;
	case '\r':
	    term_printf("\\r");
	    break;
	case '\n':
	    term_printf("\\n");
	    break;
	default:
	    term_printf("%c", filename[i]);
	    break;
	}
    }
}

static int monitor_fprintf(FILE *stream, const char *fmt, ...)
{
    va_list ap;
    va_start(ap, fmt);
    term_vprintf(fmt, ap);
    va_end(ap);
    return 0;
}

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 void help_cmd1(const term_cmd_t *cmds, const char *prefix, const char *name)

{

    const term_cmd_t *cmd;

    for(cmd = cmds; cmd->name != NULL; cmd++) {
        if (!name || !strcmp(name, cmd->name))
            term_printf("%s%s %s -- %s\n", prefix, cmd->name, cmd->params, cmd->help);
    }
}

static void help_cmd(const char *name)
{
    if (name && !strcmp(name, "info")) {
        help_cmd1(info_cmds, "info ", NULL);
    } else {
        help_cmd1(term_cmds, "", name);

        if (name && !strcmp(name, "log")) {

            const CPULogItem *item;

            term_printf("Log items (comma separated):\n");
            term_printf("%-10s %s\n", "none", "remove all logs");
            for(item = cpu_log_items; item->mask != 0; item++) {
                term_printf("%-10s %s\n", item->name, item->help);
            }
        }

    }
}

static void do_help(const char *name)

{

    help_cmd(name);

}

static void do_commit(const char *device)

{

    int i, all_devices;

    all_devices = !strcmp(device, "all");

    for (i = 0; i < nb_drives; i++) {

            if (all_devices ||

                !strcmp(bdrv_get_device_name(drives_table[i].bdrv), device))
                bdrv_commit(drives_table[i].bdrv);

    }
}

static void do_info(const char *item)

{

    const term_cmd_t *cmd;

    void (*handler)(void);

    if (!item)

        goto help;
    for(cmd = info_cmds; cmd->name != NULL; cmd++) {

        if (compare_cmd(item, cmd->name))

            goto found;
    }
 help:

    help_cmd("info");

    return;
 found:

    handler = cmd->handler;
    handler();

}

static void do_info_version(void)
{
  term_printf("%s\n", QEMU_VERSION);
}

static void do_info_name(void)
{
    if (qemu_name)
        term_printf("%s\n", qemu_name);
}

#if defined(TARGET_I386)

static void do_info_hpet(void)
{
    term_printf("HPET is %s by QEMU\n", (no_hpet) ? "disabled" : "enabled");
}

#endif

static void do_info_uuid(void)
{
    term_printf(UUID_FMT "\n", qemu_uuid[0], qemu_uuid[1], qemu_uuid[2],
            qemu_uuid[3], qemu_uuid[4], qemu_uuid[5], qemu_uuid[6],
            qemu_uuid[7], qemu_uuid[8], qemu_uuid[9], qemu_uuid[10],
            qemu_uuid[11], qemu_uuid[12], qemu_uuid[13], qemu_uuid[14],
            qemu_uuid[15]);
}

static void do_info_block(void)

{
    bdrv_info();
}

static void do_info_blockstats(void)
{
    bdrv_info_stats();
}

/* get the current CPU defined by the user */

static int mon_set_cpu(int cpu_index)

{
    CPUState *env;

    for(env = first_cpu; env != NULL; env = env->next_cpu) {
        if (env->cpu_index == cpu_index) {
            mon_cpu = env;
            return 0;
        }
    }
    return -1;
}

static CPUState *mon_get_cpu(void)

{
    if (!mon_cpu) {
        mon_set_cpu(0);
    }
    return mon_cpu;
}

static void do_info_registers(void)
{

    CPUState *env;
    env = mon_get_cpu();
    if (!env)
        return;

#ifdef TARGET_I386

    cpu_dump_state(env, NULL, monitor_fprintf,

                   X86_DUMP_FPU);

#else

    cpu_dump_state(env, NULL, monitor_fprintf,

                   0);

#endif
}

static void do_info_cpus(void)
{
    CPUState *env;

    /* just to set the default cpu if not already done */
    mon_get_cpu();

    for(env = first_cpu; env != NULL; env = env->next_cpu) {

        term_printf("%c CPU #%d:",

                    (env == mon_cpu) ? '*' : ' ',
                    env->cpu_index);
#if defined(TARGET_I386)
        term_printf(" pc=0x" TARGET_FMT_lx, env->eip + env->segs[R_CS].base);

#elif defined(TARGET_PPC)
        term_printf(" nip=0x" TARGET_FMT_lx, env->nip);

#elif defined(TARGET_SPARC)
        term_printf(" pc=0x" TARGET_FMT_lx " npc=0x" TARGET_FMT_lx, env->pc, env->npc);

#elif defined(TARGET_MIPS)

        term_printf(" PC=0x" TARGET_FMT_lx, env->active_tc.PC);

#endif

        if (env->halted)
            term_printf(" (halted)");

        term_printf("\n");
    }
}

static void do_cpu_set(int index)
{
    if (mon_set_cpu(index) < 0)
        term_printf("Invalid CPU index\n");
}

static void do_info_jit(void)
{
    dump_exec_info(NULL, monitor_fprintf);
}

static void do_info_history (void)
{
    int i;

    const char *str;

    i = 0;
    for(;;) {
        str = readline_get_history(i);
        if (!str)
            break;
	term_printf("%d: '%s'\n", i, str);

        i++;

    }
}

#if defined(TARGET_PPC)
/* XXX: not implemented in other targets */
static void do_info_cpu_stats (void)
{
    CPUState *env;

    env = mon_get_cpu();
    cpu_dump_statistics(env, NULL, &monitor_fprintf, 0);
}
#endif

static void do_quit(void)

{
    exit(0);
}

static int eject_device(BlockDriverState *bs, int force)
{
    if (bdrv_is_inserted(bs)) {
        if (!force) {
            if (!bdrv_is_removable(bs)) {
                term_printf("device is not removable\n");
                return -1;
            }
            if (bdrv_is_locked(bs)) {
                term_printf("device is locked\n");
                return -1;
            }
        }
        bdrv_close(bs);
    }
    return 0;
}

static void do_eject(int force, const char *filename)

{
    BlockDriverState *bs;

    bs = bdrv_find(filename);

    if (!bs) {
        term_printf("device not found\n");
        return;
    }
    eject_device(bs, force);
}

static void do_change_block(const char *device, const char *filename, const char *fmt)

{
    BlockDriverState *bs;

    BlockDriver *drv = NULL;

    bs = bdrv_find(device);

    if (!bs) {
        term_printf("device not found\n");
        return;
    }

    if (fmt) {
        drv = bdrv_find_format(fmt);
        if (!drv) {
            term_printf("invalid format %s\n", fmt);
            return;
        }
    }

    if (eject_device(bs, 0) < 0)
        return;

    bdrv_open2(bs, filename, 0, drv);

    monitor_read_bdrv_key_start(bs, NULL, NULL);
}

static void change_vnc_password_cb(void *opaque, const char *password)
{
    if (vnc_display_password(NULL, password) < 0)
        term_printf("could not set VNC server password\n");

    monitor_start_input();

}

static void do_change_vnc(const char *target, const char *arg)

{

    if (strcmp(target, "passwd") == 0 ||
	strcmp(target, "password") == 0) {

	if (arg) {

            char password[9];

	    strncpy(password, arg, sizeof(password));
	    password[sizeof(password) - 1] = '\0';

            change_vnc_password_cb(NULL, password);
        } else {
            monitor_read_password(change_vnc_password_cb, NULL);
        }

    } else {
	if (vnc_display_open(NULL, target) < 0)
	    term_printf("could not start VNC server on %s\n", target);
    }

}

static void do_change(const char *device, const char *target, const char *arg)

{
    if (strcmp(device, "vnc") == 0) {

	do_change_vnc(target, arg);

    } else {

	do_change_block(device, target, arg);

    }
}

static void do_screen_dump(const char *filename)

{

    vga_hw_screen_dump(filename);

}

static void do_logfile(const char *filename)
{
    cpu_set_log_filename(filename);
}

static void do_log(const char *items)

{
    int mask;

    if (!strcmp(items, "none")) {

        mask = 0;
    } else {

        mask = cpu_str_to_log_mask(items);

        if (!mask) {

            help_cmd("log");

            return;
        }
    }
    cpu_set_log(mask);
}

static void do_stop(void)

{
    vm_stop(EXCP_INTERRUPT);
}

static void encrypted_bdrv_it(void *opaque, BlockDriverState *bs);

static void do_cont(void)

{

    int err = 0;

    bdrv_iterate(encrypted_bdrv_it, &err);
    /* only resume the vm if all keys are set and valid */
    if (!err)
        vm_start();

}

static void bdrv_key_cb(void *opaque, int err)
{
    /* another key was set successfully, retry to continue */
    if (!err)
        do_cont();
}

static void encrypted_bdrv_it(void *opaque, BlockDriverState *bs)
{
    int *err = opaque;

    if (!*err && bdrv_key_required(bs)) {
        *err = -EBUSY;
        monitor_read_bdrv_key_start(bs, bdrv_key_cb, NULL);
    }
}

#ifdef CONFIG_GDBSTUB

static void do_gdbserver(const char *port)

{

    if (!port)

        port = DEFAULT_GDBSTUB_PORT;

    if (gdbserver_start(port) < 0) {
        qemu_printf("Could not open gdbserver socket on port '%s'\n", port);

    } else {

        qemu_printf("Waiting gdb connection on port '%s'\n", port);

    }
}

#endif

static void term_printc(int c)
{
    term_printf("'");
    switch(c) {
    case '\'':
        term_printf("\\'");
        break;
    case '\\':
        term_printf("\\\\");
        break;
    case '\n':
        term_printf("\\n");
        break;
    case '\r':
        term_printf("\\r");
        break;
    default:
        if (c >= 32 && c <= 126) {
            term_printf("%c", c);
        } else {
            term_printf("\\x%02x", c);
        }
        break;
    }
    term_printf("'");
}

static void memory_dump(int count, int format, int wsize,

                        target_phys_addr_t addr, int is_physical)

{

    CPUState *env;

    int nb_per_line, l, line_size, i, max_digits, len;
    uint8_t buf[16];
    uint64_t v;

    if (format == 'i') {
        int flags;
        flags = 0;

        env = mon_get_cpu();
        if (!env && !is_physical)
            return;

#ifdef TARGET_I386

        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

        monitor_disas(env, addr, count, is_physical, flags);

        return;
    }

    len = wsize * count;
    if (wsize == 1)
        line_size = 8;
    else
        line_size = 16;
    nb_per_line = line_size / wsize;
    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)
            term_printf(TARGET_FMT_plx ":", addr);
        else
            term_printf(TARGET_FMT_lx ":", (target_ulong)addr);

        l = len;
        if (l > line_size)
            l = line_size;
        if (is_physical) {
            cpu_physical_memory_rw(addr, buf, l, 0);
        } else {

            env = mon_get_cpu();
            if (!env)
                break;

            if (cpu_memory_rw_debug(env, addr, buf, l, 0) < 0) {
                term_printf(" Cannot access memory\n");
                break;
            }

        }

        i = 0;

        while (i < l) {
            switch(wsize) {
            default:
            case 1:
                v = ldub_raw(buf + i);
                break;
            case 2:
                v = lduw_raw(buf + i);
                break;
            case 4:

                v = (uint32_t)ldl_raw(buf + i);

                break;
            case 8:
                v = ldq_raw(buf + i);
                break;
            }
            term_printf(" ");
            switch(format) {
            case 'o':

                term_printf("%#*" PRIo64, max_digits, v);

                break;
            case 'x':

                term_printf("0x%0*" PRIx64, max_digits, v);

                break;
            case 'u':

                term_printf("%*" PRIu64, max_digits, v);

                break;
            case 'd':

                term_printf("%*" PRId64, max_digits, v);

                break;
            case 'c':
                term_printc(v);
                break;
            }
            i += wsize;
        }
        term_printf("\n");
        addr += l;
        len -= l;
    }
}

#if TARGET_LONG_BITS == 64
#define GET_TLONG(h, l) (((uint64_t)(h) << 32) | (l))
#else
#define GET_TLONG(h, l) (l)
#endif

static void do_memory_dump(int count, int format, int size,

                           uint32_t addrh, uint32_t addrl)

{

    target_long addr = GET_TLONG(addrh, addrl);

    memory_dump(count, format, size, addr, 0);
}

#if TARGET_PHYS_ADDR_BITS > 32
#define GET_TPHYSADDR(h, l) (((uint64_t)(h) << 32) | (l))
#else
#define GET_TPHYSADDR(h, l) (l)
#endif