monitor.c

   1 /*
   2  * QEMU monitor
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "vl.h"
  25 #include "disas.h"
  26 #include <dirent.h>
  27
  28 //#define DEBUG
  29 //#define DEBUG_COMPLETION
  30
  31 #ifndef offsetof
  32 #define offsetof(type, field) ((size_t) &((type *)0)->field)
  33 #endif
  34
  35 /*
  36  * Supported types:
  37  *
  38  * 'F'          filename
  39  * 'B'          block device name
  40  * 's'          string (accept optional quote)
  41  * 'i'          integer
  42  * '/'          optional gdb-like print format (like "/10x")
  43  *
  44  * '?'          optional type (for 'F', 's' and 'i')
  45  *
  46  */
  47
  48 typedef struct term_cmd_t {
  49     const char *name;
  50     const char *args_type;
  51     void (*handler)();
  52     const char *params;
  53     const char *help;
  54 } term_cmd_t;
  55
  56 static CharDriverState *monitor_hd;
  57
  58 static term_cmd_t term_cmds[];
  59 static term_cmd_t info_cmds[];
  60
  61 static char term_outbuf[1024];
  62 static int term_outbuf_index;
  63
  64 static void monitor_start_input(void);
  65
  66 void term_flush(void)
  67 {
  68     if (term_outbuf_index > 0) {
  69         qemu_chr_write(monitor_hd, term_outbuf, term_outbuf_index);
  70         term_outbuf_index = 0;
  71     }
  72 }
  73
  74 /* flush at every end of line or if the buffer is full */
  75 void term_puts(const char *str)
  76 {
  77     int c;
  78     for(;;) {
  79         c = *str++;
  80         if (c == '\0')
  81             break;
  82         term_outbuf[term_outbuf_index++] = c;
  83         if (term_outbuf_index >= sizeof(term_outbuf) ||
  84             c == '\n')
  85             term_flush();
  86     }
  87 }
  88
  89 void term_vprintf(const char *fmt, va_list ap)
  90 {
  91     char buf[4096];
  92     vsnprintf(buf, sizeof(buf), fmt, ap);
  93     term_puts(buf);
  94 }
  95
  96 void term_printf(const char *fmt, ...)
  97 {
  98     va_list ap;
  99     va_start(ap, fmt);
 100     term_vprintf(fmt, ap);
 101     va_end(ap);
 102 }
 103
 104 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
 105 {
 106     va_list ap;
 107     va_start(ap, fmt);
 108     term_vprintf(fmt, ap);
 109     va_end(ap);
 110     return 0;
 111 }
 112
 113 static int compare_cmd(const char *name, const char *list)
 114 {
 115     const char *p, *pstart;
 116     int len;
 117     len = strlen(name);
 118     p = list;
 119     for(;;) {
 120         pstart = p;
 121         p = strchr(p, '|');
 122         if (!p)
 123             p = pstart + strlen(pstart);
 124         if ((p - pstart) == len && !memcmp(pstart, name, len))
 125             return 1;
 126         if (*p == '\0')
 127             break;
 128         p++;
 129     }
 130     return 0;
 131 }
 132
 133 static void help_cmd1(term_cmd_t *cmds, const char *prefix, const char *name)
 134 {
 135     term_cmd_t *cmd;
 136
 137     for(cmd = cmds; cmd->name != NULL; cmd++) {
 138         if (!name || !strcmp(name, cmd->name))
 139             term_printf("%s%s %s -- %s\n", prefix, cmd->name, cmd->params, cmd->help);
 140     }
 141 }
 142
 143 static void help_cmd(const char *name)
 144 {
 145     if (name && !strcmp(name, "info")) {
 146         help_cmd1(info_cmds, "info ", NULL);
 147     } else {
 148         help_cmd1(term_cmds, "", name);
 149         if (name && !strcmp(name, "log")) {
 150             CPULogItem *item;
 151             term_printf("Log items (comma separated):\n");
 152             term_printf("%-10s %s\n", "none", "remove all logs");
 153             for(item = cpu_log_items; item->mask != 0; item++) {
 154                 term_printf("%-10s %s\n", item->name, item->help);
 155             }
 156         }
 157     }
 158 }
 159
 160 static void do_help(const char *name)
 161 {
 162     help_cmd(name);
 163 }
 164
 165 static void do_commit(void)
 166 {
 167     int i;
 168
 169     for (i = 0; i < MAX_DISKS; i++) {
 170         if (bs_table[i]) {
 171             bdrv_commit(bs_table[i]);
 172         }
 173     }
 174 }
 175
 176 static void do_info(const char *item)
 177 {
 178     term_cmd_t *cmd;
 179
 180     if (!item)
 181         goto help;
 182     for(cmd = info_cmds; cmd->name != NULL; cmd++) {
 183         if (compare_cmd(item, cmd->name))
 184             goto found;
 185     }
 186  help:
 187     help_cmd("info");
 188     return;
 189  found:
 190     cmd->handler();
 191 }
 192
 193 static void do_info_version(void)
 194 {
 195   term_printf("%s\n", QEMU_VERSION);
 196 }
 197
 198 static void do_info_network(void)
 199 {
 200     int i, j;
 201     NetDriverState *nd;
 202
 203     for(i = 0; i < nb_nics; i++) {
 204         nd = &nd_table[i];
 205         term_printf("%d: ifname=%s macaddr=", i, nd->ifname);
 206         for(j = 0; j < 6; j++) {
 207             if (j > 0)
 208                 term_printf(":");
 209             term_printf("%02x", nd->macaddr[j]);
 210         }
 211         term_printf("\n");
 212     }
 213 }
 214
 215 static void do_info_block(void)
 216 {
 217     bdrv_info();
 218 }
 219
 220 static void do_info_registers(void)
 221 {
 222 #ifdef TARGET_I386
 223     cpu_dump_state(cpu_single_env, stdout, monitor_fprintf,
 224                    X86_DUMP_FPU | X86_DUMP_CCOP);
 225 #else
 226     cpu_dump_state(cpu_single_env, stdout, monitor_fprintf,
 227                    0);
 228 #endif
 229 }
 230
 231 static void do_info_history (void)
 232 {
 233     int i;
 234     const char *str;
 235
 236     i = 0;
 237     for(;;) {
 238         str = readline_get_history(i);
 239         if (!str)
 240             break;
 241         term_printf("%d: '%s'\n", i, str);
 242         i++;
 243     }
 244 }
 245
 246 static void do_quit(void)
 247 {
 248     exit(0);
 249 }
 250
 251 static int eject_device(BlockDriverState *bs, int force)
 252 {
 253     if (bdrv_is_inserted(bs)) {
 254         if (!force) {
 255             if (!bdrv_is_removable(bs)) {
 256                 term_printf("device is not removable\n");
 257                 return -1;
 258             }
 259             if (bdrv_is_locked(bs)) {
 260                 term_printf("device is locked\n");
 261                 return -1;
 262             }
 263         }
 264         bdrv_close(bs);
 265     }
 266     return 0;
 267 }
 268
 269 static void do_eject(int force, const char *filename)
 270 {
 271     BlockDriverState *bs;
 272
 273     bs = bdrv_find(filename);
 274     if (!bs) {
 275         term_printf("device not found\n");
 276         return;
 277     }
 278     eject_device(bs, force);
 279 }
 280
 281 static void do_change(const char *device, const char *filename)
 282 {
 283     BlockDriverState *bs;
 284     int i;
 285     char password[256];
 286
 287     bs = bdrv_find(device);
 288     if (!bs) {
 289         term_printf("device not found\n");
 290         return;
 291     }
 292     if (eject_device(bs, 0) < 0)
 293         return;
 294     bdrv_open(bs, filename, 0);
 295     if (bdrv_is_encrypted(bs)) {
 296         term_printf("%s is encrypted.\n", device);
 297         for(i = 0; i < 3; i++) {
 298             monitor_readline("Password: ", 1, password, sizeof(password));
 299             if (bdrv_set_key(bs, password) == 0)
 300                 break;
 301             term_printf("invalid password\n");
 302         }
 303     }
 304 }
 305
 306 static void do_screen_dump(const char *filename)
 307 {
 308     vga_screen_dump(filename);
 309 }
 310
 311 static void do_log(const char *items)
 312 {
 313     int mask;
 314
 315     if (!strcmp(items, "none")) {
 316         mask = 0;
 317     } else {
 318         mask = cpu_str_to_log_mask(items);
 319         if (!mask) {
 320             help_cmd("log");
 321             return;
 322         }
 323     }
 324     cpu_set_log(mask);
 325 }
 326
 327 static void do_savevm(const char *filename)
 328 {
 329     if (qemu_savevm(filename) < 0)
 330         term_printf("I/O error when saving VM to '%s'\n", filename);
 331 }
 332
 333 static void do_loadvm(const char *filename)
 334 {
 335     if (qemu_loadvm(filename) < 0)
 336         term_printf("I/O error when loading VM from '%s'\n", filename);
 337 }
 338
 339 static void do_stop(void)
 340 {
 341     vm_stop(EXCP_INTERRUPT);
 342 }
 343
 344 static void do_cont(void)
 345 {
 346     vm_start();
 347 }
 348
 349 #ifdef CONFIG_GDBSTUB
 350 static void do_gdbserver(int has_port, int port)
 351 {
 352     if (!has_port)
 353         port = DEFAULT_GDBSTUB_PORT;
 354     if (gdbserver_start(port) < 0) {
 355         qemu_printf("Could not open gdbserver socket on port %d\n", port);
 356     } else {
 357         qemu_printf("Waiting gdb connection on port %d\n", port);
 358     }
 359 }
 360 #endif
 361
 362 static void term_printc(int c)
 363 {
 364     term_printf("'");
 365     switch(c) {
 366     case '\'':
 367         term_printf("\\'");
 368         break;
 369     case '\\':
 370         term_printf("\\\\");
 371         break;
 372     case '\n':
 373         term_printf("\\n");
 374         break;
 375     case '\r':
 376         term_printf("\\r");
 377         break;
 378     default:
 379         if (c >= 32 && c <= 126) {
 380             term_printf("%c", c);
 381         } else {
 382             term_printf("\\x%02x", c);
 383         }
 384         break;
 385     }
 386     term_printf("'");
 387 }
 388
 389 static void memory_dump(int count, int format, int wsize,
 390                         target_ulong addr, int is_physical)
 391 {
 392     int nb_per_line, l, line_size, i, max_digits, len;
 393     uint8_t buf[16];
 394     uint64_t v;
 395
 396     if (format == 'i') {
 397         int flags;
 398         flags = 0;
 399 #ifdef TARGET_I386
 400         if (wsize == 2) {
 401             flags = 1;
 402         } else if (wsize == 4) {
 403             flags = 0;
 404         } else {
 405             /* as default we use the current CS size */
 406             flags = 0;
 407             if (!(cpu_single_env->segs[R_CS].flags & DESC_B_MASK))
 408                 flags = 1;
 409         }
 410 #endif
 411         monitor_disas(addr, count, is_physical, flags);
 412         return;
 413     }
 414
 415     len = wsize * count;
 416     if (wsize == 1)
 417         line_size = 8;
 418     else
 419         line_size = 16;
 420     nb_per_line = line_size / wsize;
 421     max_digits = 0;
 422
 423     switch(format) {
 424     case 'o':
 425         max_digits = (wsize * 8 + 2) / 3;
 426         break;
 427     default:
 428     case 'x':
 429         max_digits = (wsize * 8) / 4;
 430         break;
 431     case 'u':
 432     case 'd':
 433         max_digits = (wsize * 8 * 10 + 32) / 33;
 434         break;
 435     case 'c':
 436         wsize = 1;
 437         break;
 438     }
 439
 440     while (len > 0) {
 441         term_printf("0x%08x:", addr);
 442         l = len;
 443         if (l > line_size)
 444             l = line_size;
 445         if (is_physical) {
 446             cpu_physical_memory_rw(addr, buf, l, 0);
 447         } else {
 448             cpu_memory_rw_debug(cpu_single_env, addr, buf, l, 0);
 449         }
 450         i = 0;
 451         while (i < l) {
 452             switch(wsize) {
 453             default:
 454             case 1:
 455                 v = ldub_raw(buf + i);
 456                 break;
 457             case 2:
 458                 v = lduw_raw(buf + i);
 459                 break;
 460             case 4:
 461                 v = ldl_raw(buf + i);
 462                 break;
 463             case 8:
 464                 v = ldq_raw(buf + i);
 465                 break;
 466             }
 467             term_printf(" ");
 468             switch(format) {
 469             case 'o':
 470                 term_printf("%#*llo", max_digits, v);
 471                 break;
 472             case 'x':
 473                 term_printf("0x%0*llx", max_digits, v);
 474                 break;
 475             case 'u':
 476                 term_printf("%*llu", max_digits, v);
 477                 break;
 478             case 'd':
 479                 term_printf("%*lld", max_digits, v);
 480                 break;
 481             case 'c':
 482                 term_printc(v);
 483                 break;
 484             }
 485             i += wsize;
 486         }
 487         term_printf("\n");
 488         addr += l;
 489         len -= l;
 490     }
 491 }
 492
 493 static void do_memory_dump(int count, int format, int size, int addr)
 494 {
 495     memory_dump(count, format, size, addr, 0);
 496 }
 497
 498 static void do_physical_memory_dump(int count, int format, int size, int addr)
 499 {
 500     memory_dump(count, format, size, addr, 1);
 501 }
 502
 503 static void do_print(int count, int format, int size, int val)
 504 {
 505     switch(format) {
 506     case 'o':
 507         term_printf("%#o", val);
 508         break;
 509     case 'x':
 510         term_printf("%#x", val);
 511         break;
 512     case 'u':
 513         term_printf("%u", val);
 514         break;
 515     default:
 516     case 'd':
 517         term_printf("%d", val);
 518         break;
 519     case 'c':
 520         term_printc(val);
 521         break;
 522     }
 523     term_printf("\n");
 524 }
 525
 526 typedef struct {
 527     int keycode;
 528     const char *name;
 529 } KeyDef;
 530
 531 static const KeyDef key_defs[] = {
 532     { 0x2a, "shift" },
 533     { 0x36, "shift_r" },
 534
 535     { 0x38, "alt" },
 536     { 0xb8, "alt_r" },
 537     { 0x1d, "ctrl" },
 538     { 0x9d, "ctrl_r" },
 539
 540     { 0xdd, "menu" },
 541
 542     { 0x01, "esc" },
 543
 544     { 0x02, "1" },
 545     { 0x03, "2" },
 546     { 0x04, "3" },
 547     { 0x05, "4" },
 548     { 0x06, "5" },
 549     { 0x07, "6" },
 550     { 0x08, "7" },
 551     { 0x09, "8" },
 552     { 0x0a, "9" },
 553     { 0x0b, "0" },
 554     { 0x0e, "backspace" },
 555
 556     { 0x0f, "tab" },
 557     { 0x10, "q" },
 558     { 0x11, "w" },
 559     { 0x12, "e" },
 560     { 0x13, "r" },
 561     { 0x14, "t" },
 562     { 0x15, "y" },
 563     { 0x16, "u" },
 564     { 0x17, "i" },
 565     { 0x18, "o" },
 566     { 0x19, "p" },
 567
 568     { 0x1c, "ret" },
 569
 570     { 0x1e, "a" },
 571     { 0x1f, "s" },
 572     { 0x20, "d" },
 573     { 0x21, "f" },
 574     { 0x22, "g" },
 575     { 0x23, "h" },
 576     { 0x24, "j" },
 577     { 0x25, "k" },
 578     { 0x26, "l" },
 579
 580     { 0x2c, "z" },
 581     { 0x2d, "x" },
 582     { 0x2e, "c" },
 583     { 0x2f, "v" },
 584     { 0x30, "b" },
 585     { 0x31, "n" },
 586     { 0x32, "m" },
 587
 588     { 0x39, "spc" },
 589     { 0x3a, "caps_lock" },
 590     { 0x3b, "f1" },
 591     { 0x3c, "f2" },
 592     { 0x3d, "f3" },
 593     { 0x3e, "f4" },
 594     { 0x3f, "f5" },
 595     { 0x40, "f6" },
 596     { 0x41, "f7" },
 597     { 0x42, "f8" },
 598     { 0x43, "f9" },
 599     { 0x44, "f10" },
 600     { 0x45, "num_lock" },
 601     { 0x46, "scroll_lock" },
 602
 603     { 0x56, "<" },
 604
 605     { 0x57, "f11" },
 606     { 0x58, "f12" },
 607
 608     { 0xb7, "print" },
 609
 610     { 0xc7, "home" },
 611     { 0xc9, "pgup" },
 612     { 0xd1, "pgdn" },
 613     { 0xcf, "end" },
 614
 615     { 0xcb, "left" },
 616     { 0xc8, "up" },
 617     { 0xd0, "down" },
 618     { 0xcd, "right" },
 619
 620     { 0xd2, "insert" },
 621     { 0xd3, "delete" },
 622     { 0, NULL },
 623 };
 624
 625 static int get_keycode(const char *key)
 626 {
 627     const KeyDef *p;
 628
 629     for(p = key_defs; p->name != NULL; p++) {
 630         if (!strcmp(key, p->name))
 631             return p->keycode;
 632     }
 633     return -1;
 634 }
 635
 636 static void do_send_key(const char *string)
 637 {
 638     char keybuf[16], *q;
 639     uint8_t keycodes[16];
 640     const char *p;
 641     int nb_keycodes, keycode, i;
 642
 643     nb_keycodes = 0;
 644     p = string;
 645     while (*p != '\0') {
 646         q = keybuf;
 647         while (*p != '\0' && *p != '-') {
 648             if ((q - keybuf) < sizeof(keybuf) - 1) {
 649                 *q++ = *p;
 650             }
 651             p++;
 652         }
 653         *q = '\0';
 654         keycode = get_keycode(keybuf);
 655         if (keycode < 0) {
 656             term_printf("unknown key: '%s'\n", keybuf);
 657             return;
 658         }
 659         keycodes[nb_keycodes++] = keycode;
 660         if (*p == '\0')
 661             break;
 662         p++;
 663     }
 664     /* key down events */
 665     for(i = 0; i < nb_keycodes; i++) {
 666         keycode = keycodes[i];
 667         if (keycode & 0x80)
 668             kbd_put_keycode(0xe0);
 669         kbd_put_keycode(keycode & 0x7f);
 670     }
 671     /* key up events */
 672     for(i = nb_keycodes - 1; i >= 0; i--) {
 673         keycode = keycodes[i];
 674         if (keycode & 0x80)
 675             kbd_put_keycode(0xe0);
 676         kbd_put_keycode(keycode | 0x80);
 677     }
 678 }
 679
 680 static void do_ioport_read(int count, int format, int size, int addr, int has_index, int index)
 681 {
 682     uint32_t val;
 683     int suffix;
 684
 685     if (has_index) {
 686         cpu_outb(NULL, addr & 0xffff, index & 0xff);
 687         addr++;
 688     }
 689     addr &= 0xffff;
 690
 691     switch(size) {
 692     default:
 693     case 1:
 694         val = cpu_inb(NULL, addr);
 695         suffix = 'b';
 696         break;
 697     case 2:
 698         val = cpu_inw(NULL, addr);
 699         suffix = 'w';
 700         break;
 701     case 4:
 702         val = cpu_inl(NULL, addr);
 703         suffix = 'l';
 704         break;
 705     }
 706     term_printf("port%c[0x%04x] = %#0*x\n",
 707                 suffix, addr, size * 2, val);
 708 }
 709
 710 static void do_system_reset(void)
 711 {
 712     qemu_system_reset_request();
 713 }
 714
 715 #if defined(TARGET_I386)
 716 static void print_pte(uint32_t addr, uint32_t pte, uint32_t mask)
 717 {
 718     term_printf("%08x: %08x %c%c%c%c%c%c%c%c\n",
 719                 addr,
 720                 pte & mask,
 721                 pte & PG_GLOBAL_MASK ? 'G' : '-',
 722                 pte & PG_PSE_MASK ? 'P' : '-',
 723                 pte & PG_DIRTY_MASK ? 'D' : '-',
 724                 pte & PG_ACCESSED_MASK ? 'A' : '-',
 725                 pte & PG_PCD_MASK ? 'C' : '-',
 726                 pte & PG_PWT_MASK ? 'T' : '-',
 727                 pte & PG_USER_MASK ? 'U' : '-',
 728                 pte & PG_RW_MASK ? 'W' : '-');
 729 }
 730
 731 static void tlb_info(void)
 732 {
 733     CPUState *env = cpu_single_env;
 734     int l1, l2;
 735     uint32_t pgd, pde, pte;
 736
 737     if (!(env->cr[0] & CR0_PG_MASK)) {
 738         term_printf("PG disabled\n");
 739         return;
 740     }
 741     pgd = env->cr[3] & ~0xfff;
 742     for(l1 = 0; l1 < 1024; l1++) {
 743         cpu_physical_memory_read(pgd + l1 * 4, (uint8_t *)&pde, 4);
 744         pde = le32_to_cpu(pde);
 745         if (pde & PG_PRESENT_MASK) {
 746             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
 747                 print_pte((l1 << 22), pde, ~((1 << 20) - 1));
 748             } else {
 749                 for(l2 = 0; l2 < 1024; l2++) {
 750                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4,
 751                                              (uint8_t *)&pte, 4);
 752                     pte = le32_to_cpu(pte);
 753                     if (pte & PG_PRESENT_MASK) {
 754                         print_pte((l1 << 22) + (l2 << 12),
 755                                   pte & ~PG_PSE_MASK,
 756                                   ~0xfff);
 757                     }
 758                 }
 759             }
 760         }
 761     }
 762 }
 763
 764 static void mem_print(uint32_t *pstart, int *plast_prot,
 765                       uint32_t end, int prot)
 766 {
 767     int prot1;
 768     prot1 = *plast_prot;
 769     if (prot != prot1) {
 770         if (*pstart != -1) {
 771             term_printf("%08x-%08x %08x %c%c%c\n",
 772                         *pstart, end, end - *pstart,
 773                         prot1 & PG_USER_MASK ? 'u' : '-',
 774                         'r',
 775                         prot1 & PG_RW_MASK ? 'w' : '-');
 776         }
 777         if (prot != 0)
 778             *pstart = end;
 779         else
 780             *pstart = -1;
 781         *plast_prot = prot;
 782     }
 783 }
 784
 785 static void mem_info(void)
 786 {
 787     CPUState *env = cpu_single_env;
 788     int l1, l2, prot, last_prot;
 789     uint32_t pgd, pde, pte, start, end;
 790
 791     if (!(env->cr[0] & CR0_PG_MASK)) {
 792         term_printf("PG disabled\n");
 793         return;
 794     }
 795     pgd = env->cr[3] & ~0xfff;
 796     last_prot = 0;
 797     start = -1;
 798     for(l1 = 0; l1 < 1024; l1++) {
 799         cpu_physical_memory_read(pgd + l1 * 4, (uint8_t *)&pde, 4);
 800         pde = le32_to_cpu(pde);
 801         end = l1 << 22;
 802         if (pde & PG_PRESENT_MASK) {
 803             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
 804                 prot = pde & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 805                 mem_print(&start, &last_prot, end, prot);
 806             } else {
 807                 for(l2 = 0; l2 < 1024; l2++) {
 808                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4,
 809                                              (uint8_t *)&pte, 4);
 810                     pte = le32_to_cpu(pte);
 811                     end = (l1 << 22) + (l2 << 12);
 812                     if (pte & PG_PRESENT_MASK) {
 813                         prot = pte & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 814                     } else {
 815                         prot = 0;
 816                     }
 817                     mem_print(&start, &last_prot, end, prot);
 818                 }
 819             }
 820         } else {
 821             prot = 0;
 822             mem_print(&start, &last_prot, end, prot);
 823         }
 824     }
 825 }
 826 #endif
 827
 828 static term_cmd_t term_cmds[] = {
 829     { "help|?", "s?", do_help,
 830       "[cmd]", "show the help" },
 831     { "commit", "", do_commit,
 832       "", "commit changes to the disk images (if -snapshot is used)" },
 833     { "info", "s?", do_info,
 834       "subcommand", "show various information about the system state" },
 835     { "q|quit", "", do_quit,
 836       "", "quit the emulator" },
 837     { "eject", "-fB", do_eject,
 838       "[-f] device", "eject a removable media (use -f to force it)" },
 839     { "change", "BF", do_change,
 840       "device filename", "change a removable media" },
 841     { "screendump", "F", do_screen_dump,
 842       "filename", "save screen into PPM image 'filename'" },
 843     { "log", "s", do_log,
 844       "item1[,...]", "activate logging of the specified items to '/tmp/qemu.log'" },
 845     { "savevm", "F", do_savevm,
 846       "filename", "save the whole virtual machine state to 'filename'" },
 847     { "loadvm", "F", do_loadvm,
 848       "filename", "restore the whole virtual machine state from 'filename'" },
 849     { "stop", "", do_stop,
 850       "", "stop emulation", },
 851     { "c|cont", "", do_cont,
 852       "", "resume emulation", },
 853 #ifdef CONFIG_GDBSTUB
 854     { "gdbserver", "i?", do_gdbserver,
 855       "[port]", "start gdbserver session (default port=1234)", },
 856 #endif
 857     { "x", "/i", do_memory_dump,
 858       "/fmt addr", "virtual memory dump starting at 'addr'", },
 859     { "xp", "/i", do_physical_memory_dump,
 860       "/fmt addr", "physical memory dump starting at 'addr'", },
 861     { "p|print", "/i", do_print,
 862       "/fmt expr", "print expression value (use $reg for CPU register access)", },
 863     { "i", "/ii.", do_ioport_read,
 864       "/fmt addr", "I/O port read" },
 865
 866     { "sendkey", "s", do_send_key,
 867       "keys", "send keys to the VM (e.g. 'sendkey ctrl-alt-f1')" },
 868     { "system_reset", "", do_system_reset,
 869       "", "reset the system" },
 870     { NULL, NULL, },
 871 };
 872
 873 static term_cmd_t info_cmds[] = {
 874     { "version", "", do_info_version,
 875       "", "show the version of qemu" },
 876     { "network", "", do_info_network,
 877       "", "show the network state" },
 878     { "block", "", do_info_block,
 879       "", "show the block devices" },
 880     { "registers", "", do_info_registers,
 881       "", "show the cpu registers" },
 882     { "history", "", do_info_history,
 883       "", "show the command line history", },
 884     { "irq", "", irq_info,
 885       "", "show the interrupts statistics (if available)", },
 886     { "pic", "", pic_info,
 887       "", "show i8259 (PIC) state", },
 888     { "pci", "", pci_info,
 889       "", "show PCI info", },
 890 #if defined(TARGET_I386)
 891     { "tlb", "", tlb_info,
 892       "", "show virtual to physical memory mappings", },
 893     { "mem", "", mem_info,
 894       "", "show the active virtual memory mappings", },
 895 #endif
 896     { NULL, NULL, },
 897 };
 898
 899 /*******************************************************************/
 900
 901 static const char *pch;
 902 static jmp_buf expr_env;
 903
 904 typedef struct MonitorDef {
 905     const char *name;
 906     int offset;
 907     int (*get_value)(struct MonitorDef *md, int val);
 908 } MonitorDef;
 909
 910 #if defined(TARGET_I386)
 911 static int monitor_get_pc (struct MonitorDef *md, int val)
 912 {
 913     return cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base;
 914 }
 915 #endif
 916
 917 #if defined(TARGET_PPC)
 918 static int monitor_get_ccr (struct MonitorDef *md, int val)
 919 {
 920     unsigned int u;
 921     int i;
 922
 923     u = 0;
 924     for (i = 0; i < 8; i++)
 925         u |= cpu_single_env->crf[i] << (32 - (4 * i));
 926
 927     return u;
 928 }
 929
 930 static int monitor_get_msr (struct MonitorDef *md, int val)
 931 {
 932     return (cpu_single_env->msr[MSR_POW] << MSR_POW) |
 933         (cpu_single_env->msr[MSR_ILE] << MSR_ILE) |
 934         (cpu_single_env->msr[MSR_EE] << MSR_EE) |
 935         (cpu_single_env->msr[MSR_PR] << MSR_PR) |
 936         (cpu_single_env->msr[MSR_FP] << MSR_FP) |
 937         (cpu_single_env->msr[MSR_ME] << MSR_ME) |
 938         (cpu_single_env->msr[MSR_FE0] << MSR_FE0) |
 939         (cpu_single_env->msr[MSR_SE] << MSR_SE) |
 940         (cpu_single_env->msr[MSR_BE] << MSR_BE) |
 941         (cpu_single_env->msr[MSR_FE1] << MSR_FE1) |
 942         (cpu_single_env->msr[MSR_IP] << MSR_IP) |
 943         (cpu_single_env->msr[MSR_IR] << MSR_IR) |
 944         (cpu_single_env->msr[MSR_DR] << MSR_DR) |
 945         (cpu_single_env->msr[MSR_RI] << MSR_RI) |
 946         (cpu_single_env->msr[MSR_LE] << MSR_LE);
 947 }
 948
 949 static int monitor_get_xer (struct MonitorDef *md, int val)
 950 {
 951     return (cpu_single_env->xer[XER_SO] << XER_SO) |
 952         (cpu_single_env->xer[XER_OV] << XER_OV) |
 953         (cpu_single_env->xer[XER_CA] << XER_CA) |
 954         (cpu_single_env->xer[XER_BC] << XER_BC);
 955 }
 956
 957 static int monitor_get_decr (struct MonitorDef *md, int val)
 958 {
 959     return cpu_ppc_load_decr(cpu_single_env);
 960 }
 961
 962 static int monitor_get_tbu (struct MonitorDef *md, int val)
 963 {
 964     return cpu_ppc_load_tbu(cpu_single_env);
 965 }
 966
 967 static int monitor_get_tbl (struct MonitorDef *md, int val)
 968 {
 969     return cpu_ppc_load_tbl(cpu_single_env);
 970 }
 971 #endif
 972
 973 #if defined(TARGET_SPARC)
 974 static int monitor_get_psr (struct MonitorDef *md, int val)
 975 {
 976     return GET_PSR(cpu_single_env);
 977 }
 978
 979 static int monitor_get_reg(struct MonitorDef *md, int val)
 980 {
 981     return cpu_single_env->regwptr[val];
 982 }
 983 #endif
 984
 985 static MonitorDef monitor_defs[] = {
 986 #ifdef TARGET_I386
 987
 988 #define SEG(name, seg) \
 989     { name, offsetof(CPUState, segs[seg].selector) },\
 990     { name ".base", offsetof(CPUState, segs[seg].base) },\
 991     { name ".limit", offsetof(CPUState, segs[seg].limit) },
 992
 993     { "eax", offsetof(CPUState, regs[0]) },
 994     { "ecx", offsetof(CPUState, regs[1]) },
 995     { "edx", offsetof(CPUState, regs[2]) },
 996     { "ebx", offsetof(CPUState, regs[3]) },
 997     { "esp|sp", offsetof(CPUState, regs[4]) },
 998     { "ebp|fp", offsetof(CPUState, regs[5]) },
 999     { "esi", offsetof(CPUState, regs[6]) },
1000     { "edi", offsetof(CPUState, regs[7]) },
1001     { "eflags", offsetof(CPUState, eflags) },
1002     { "eip", offsetof(CPUState, eip) },
1003     SEG("cs", R_CS)
1004     SEG("ds", R_DS)
1005     SEG("es", R_ES)
1006     SEG("ss", R_SS)
1007     SEG("fs", R_FS)
1008     SEG("gs", R_GS)
1009     { "pc", 0, monitor_get_pc, },
1010 #elif defined(TARGET_PPC)
1011     { "r0", offsetof(CPUState, gpr[0]) },
1012     { "r1", offsetof(CPUState, gpr[1]) },
1013     { "r2", offsetof(CPUState, gpr[2]) },
1014     { "r3", offsetof(CPUState, gpr[3]) },
1015     { "r4", offsetof(CPUState, gpr[4]) },
1016     { "r5", offsetof(CPUState, gpr[5]) },
1017     { "r6", offsetof(CPUState, gpr[6]) },
1018     { "r7", offsetof(CPUState, gpr[7]) },
1019     { "r8", offsetof(CPUState, gpr[8]) },
1020     { "r9", offsetof(CPUState, gpr[9]) },
1021     { "r10", offsetof(CPUState, gpr[10]) },
1022     { "r11", offsetof(CPUState, gpr[11]) },
1023     { "r12", offsetof(CPUState, gpr[12]) },
1024     { "r13", offsetof(CPUState, gpr[13]) },
1025     { "r14", offsetof(CPUState, gpr[14]) },
1026     { "r15", offsetof(CPUState, gpr[15]) },
1027     { "r16", offsetof(CPUState, gpr[16]) },
1028     { "r17", offsetof(CPUState, gpr[17]) },
1029     { "r18", offsetof(CPUState, gpr[18]) },
1030     { "r19", offsetof(CPUState, gpr[19]) },
1031     { "r20", offsetof(CPUState, gpr[20]) },
1032     { "r21", offsetof(CPUState, gpr[21]) },
1033     { "r22", offsetof(CPUState, gpr[22]) },
1034     { "r23", offsetof(CPUState, gpr[23]) },
1035     { "r24", offsetof(CPUState, gpr[24]) },
1036     { "r25", offsetof(CPUState, gpr[25]) },
1037     { "r26", offsetof(CPUState, gpr[26]) },
1038     { "r27", offsetof(CPUState, gpr[27]) },
1039     { "r28", offsetof(CPUState, gpr[28]) },
1040     { "r29", offsetof(CPUState, gpr[29]) },
1041     { "r30", offsetof(CPUState, gpr[30]) },
1042     { "r31", offsetof(CPUState, gpr[31]) },
1043     { "nip|pc", offsetof(CPUState, nip) },
1044     { "lr", offsetof(CPUState, lr) },
1045     { "ctr", offsetof(CPUState, ctr) },
1046     { "decr", 0, &monitor_get_decr, },
1047     { "ccr", 0, &monitor_get_ccr, },
1048     { "msr", 0, &monitor_get_msr, },
1049     { "xer", 0, &monitor_get_xer, },
1050     { "tbu", 0, &monitor_get_tbu, },
1051     { "tbl", 0, &monitor_get_tbl, },
1052     { "sdr1", offsetof(CPUState, sdr1) },
1053     { "sr0", offsetof(CPUState, sr[0]) },
1054     { "sr1", offsetof(CPUState, sr[1]) },
1055     { "sr2", offsetof(CPUState, sr[2]) },
1056     { "sr3", offsetof(CPUState, sr[3]) },
1057     { "sr4", offsetof(CPUState, sr[4]) },
1058     { "sr5", offsetof(CPUState, sr[5]) },
1059     { "sr6", offsetof(CPUState, sr[6]) },
1060     { "sr7", offsetof(CPUState, sr[7]) },
1061     { "sr8", offsetof(CPUState, sr[8]) },
1062     { "sr9", offsetof(CPUState, sr[9]) },
1063     { "sr10", offsetof(CPUState, sr[10]) },
1064     { "sr11", offsetof(CPUState, sr[11]) },
1065     { "sr12", offsetof(CPUState, sr[12]) },
1066     { "sr13", offsetof(CPUState, sr[13]) },
1067     { "sr14", offsetof(CPUState, sr[14]) },
1068     { "sr15", offsetof(CPUState, sr[15]) },
1069     /* Too lazy to put BATs and SPRs ... */
1070 #elif defined(TARGET_SPARC)
1071     { "g0", offsetof(CPUState, gregs[0]) },
1072     { "g1", offsetof(CPUState, gregs[1]) },
1073     { "g2", offsetof(CPUState, gregs[2]) },
1074     { "g3", offsetof(CPUState, gregs[3]) },
1075     { "g4", offsetof(CPUState, gregs[4]) },
1076     { "g5", offsetof(CPUState, gregs[5]) },
1077     { "g6", offsetof(CPUState, gregs[6]) },
1078     { "g7", offsetof(CPUState, gregs[7]) },
1079     { "o0", 0, monitor_get_reg },
1080     { "o1", 1, monitor_get_reg },
1081     { "o2", 2, monitor_get_reg },
1082     { "o3", 3, monitor_get_reg },
1083     { "o4", 4, monitor_get_reg },
1084     { "o5", 5, monitor_get_reg },
1085     { "o6", 6, monitor_get_reg },
1086     { "o7", 7, monitor_get_reg },
1087     { "l0", 8, monitor_get_reg },
1088     { "l1", 9, monitor_get_reg },
1089     { "l2", 10, monitor_get_reg },
1090     { "l3", 11, monitor_get_reg },
1091     { "l4", 12, monitor_get_reg },
1092     { "l5", 13, monitor_get_reg },
1093     { "l6", 14, monitor_get_reg },
1094     { "l7", 15, monitor_get_reg },
1095     { "i0", 16, monitor_get_reg },
1096     { "i1", 17, monitor_get_reg },
1097     { "i2", 18, monitor_get_reg },
1098     { "i3", 19, monitor_get_reg },
1099     { "i4", 20, monitor_get_reg },
1100     { "i5", 21, monitor_get_reg },
1101     { "i6", 22, monitor_get_reg },
1102     { "i7", 23, monitor_get_reg },
1103     { "pc", offsetof(CPUState, pc) },
1104     { "npc", offsetof(CPUState, npc) },
1105     { "y", offsetof(CPUState, y) },
1106     { "psr", 0, &monitor_get_psr, },
1107     { "wim", offsetof(CPUState, wim) },
1108     { "tbr", offsetof(CPUState, tbr) },
1109     { "fsr", offsetof(CPUState, fsr) },
1110     { "f0", offsetof(CPUState, fpr[0]) },
1111     { "f1", offsetof(CPUState, fpr[1]) },
1112     { "f2", offsetof(CPUState, fpr[2]) },
1113     { "f3", offsetof(CPUState, fpr[3]) },
1114     { "f4", offsetof(CPUState, fpr[4]) },
1115     { "f5", offsetof(CPUState, fpr[5]) },
1116     { "f6", offsetof(CPUState, fpr[6]) },
1117     { "f7", offsetof(CPUState, fpr[7]) },
1118     { "f8", offsetof(CPUState, fpr[8]) },
1119     { "f9", offsetof(CPUState, fpr[9]) },
1120     { "f10", offsetof(CPUState, fpr[10]) },
1121     { "f11", offsetof(CPUState, fpr[11]) },
1122     { "f12", offsetof(CPUState, fpr[12]) },
1123     { "f13", offsetof(CPUState, fpr[13]) },
1124     { "f14", offsetof(CPUState, fpr[14]) },
1125     { "f15", offsetof(CPUState, fpr[15]) },
1126     { "f16", offsetof(CPUState, fpr[16]) },
1127     { "f17", offsetof(CPUState, fpr[17]) },
1128     { "f18", offsetof(CPUState, fpr[18]) },
1129     { "f19", offsetof(CPUState, fpr[19]) },
1130     { "f20", offsetof(CPUState, fpr[20]) },
1131     { "f21", offsetof(CPUState, fpr[21]) },
1132     { "f22", offsetof(CPUState, fpr[22]) },
1133     { "f23", offsetof(CPUState, fpr[23]) },
1134     { "f24", offsetof(CPUState, fpr[24]) },
1135     { "f25", offsetof(CPUState, fpr[25]) },
1136     { "f26", offsetof(CPUState, fpr[26]) },
1137     { "f27", offsetof(CPUState, fpr[27]) },
1138     { "f28", offsetof(CPUState, fpr[28]) },
1139     { "f29", offsetof(CPUState, fpr[29]) },
1140     { "f30", offsetof(CPUState, fpr[30]) },
1141     { "f31", offsetof(CPUState, fpr[31]) },
1142 #endif
1143     { NULL },
1144 };
1145
1146 static void expr_error(const char *fmt)
1147 {
1148     term_printf(fmt);
1149     term_printf("\n");
1150     longjmp(expr_env, 1);
1151 }
1152
1153 static int get_monitor_def(int *pval, const char *name)
1154 {
1155     MonitorDef *md;
1156     for(md = monitor_defs; md->name != NULL; md++) {
1157         if (compare_cmd(name, md->name)) {
1158             if (md->get_value) {
1159                 *pval = md->get_value(md, md->offset);
1160             } else {
1161                 *pval = *(uint32_t *)((uint8_t *)cpu_single_env + md->offset);
1162             }
1163             return 0;
1164         }
1165     }
1166     return -1;
1167 }
1168
1169 static void next(void)
1170 {
1171     if (pch != '\0') {
1172         pch++;
1173         while (isspace(*pch))
1174             pch++;
1175     }
1176 }
1177
1178 static int expr_sum(void);
1179
1180 static int expr_unary(void)
1181 {
1182     int n;
1183     char *p;
1184
1185     switch(*pch) {
1186     case '+':
1187         next();
1188         n = expr_unary();
1189         break;
1190     case '-':
1191         next();
1192         n = -expr_unary();
1193         break;
1194     case '~':
1195         next();
1196         n = ~expr_unary();
1197         break;
1198     case '(':
1199         next();
1200         n = expr_sum();
1201         if (*pch != ')') {
1202             expr_error("')' expected");
1203         }
1204         next();
1205         break;
1206     case '\'':
1207         pch++;
1208         if (*pch == '\0')
1209             expr_error("character constant expected");
1210         n = *pch;
1211         pch++;
1212         if (*pch != '\'')
1213             expr_error("missing terminating \' character");
1214         next();
1215         break;
1216     case '$':
1217         {
1218             char buf[128], *q;
1219
1220             pch++;
1221             q = buf;
1222             while ((*pch >= 'a' && *pch <= 'z') ||
1223                    (*pch >= 'A' && *pch <= 'Z') ||
1224                    (*pch >= '0' && *pch <= '9') ||
1225                    *pch == '_' || *pch == '.') {
1226                 if ((q - buf) < sizeof(buf) - 1)
1227                     *q++ = *pch;
1228                 pch++;
1229             }
1230             while (isspace(*pch))
1231                 pch++;
1232             *q = 0;
1233             if (get_monitor_def(&n, buf))
1234                 expr_error("unknown register");
1235         }
1236         break;
1237     case '\0':
1238         expr_error("unexpected end of expression");
1239         n = 0;
1240         break;
1241     default:
1242         n = strtoul(pch, &p, 0);
1243         if (pch == p) {
1244             expr_error("invalid char in expression");
1245         }
1246         pch = p;
1247         while (isspace(*pch))
1248             pch++;
1249         break;
1250     }
1251     return n;
1252 }
1253
1254
1255 static int expr_prod(void)
1256 {
1257     int val, val2, op;
1258
1259     val = expr_unary();
1260     for(;;) {
1261         op = *pch;
1262         if (op != '*' && op != '/' && op != '%')
1263             break;
1264         next();
1265         val2 = expr_unary();
1266         switch(op) {
1267         default:
1268         case '*':
1269             val *= val2;
1270             break;
1271         case '/':
1272         case '%':
1273             if (val2 == 0)
1274                 expr_error("division by zero");
1275             if (op == '/')
1276                 val /= val2;
1277             else
1278                 val %= val2;
1279             break;
1280         }
1281     }
1282     return val;
1283 }
1284
1285 static int expr_logic(void)
1286 {
1287     int val, val2, op;
1288
1289     val = expr_prod();
1290     for(;;) {
1291         op = *pch;
1292         if (op != '&' && op != '|' && op != '^')
1293             break;
1294         next();
1295         val2 = expr_prod();
1296         switch(op) {
1297         default:
1298         case '&':
1299             val &= val2;
1300             break;
1301         case '|':
1302             val |= val2;
1303             break;
1304         case '^':
1305             val ^= val2;
1306             break;
1307         }
1308     }
1309     return val;
1310 }
1311
1312 static int expr_sum(void)
1313 {
1314     int val, val2, op;
1315
1316     val = expr_logic();
1317     for(;;) {
1318         op = *pch;
1319         if (op != '+' && op != '-')
1320             break;
1321         next();
1322         val2 = expr_logic();
1323         if (op == '+')
1324             val += val2;
1325         else
1326             val -= val2;
1327     }
1328     return val;
1329 }
1330
1331 static int get_expr(int *pval, const char **pp)
1332 {
1333     pch = *pp;
1334     if (setjmp(expr_env)) {
1335         *pp = pch;
1336         return -1;
1337     }
1338     while (isspace(*pch))
1339         pch++;
1340     *pval = expr_sum();
1341     *pp = pch;
1342     return 0;
1343 }
1344
1345 static int get_str(char *buf, int buf_size, const char **pp)
1346 {
1347     const char *p;
1348     char *q;
1349     int c;
1350
1351     q = buf;
1352     p = *pp;
1353     while (isspace(*p))
1354         p++;
1355     if (*p == '\0') {
1356     fail:
1357         *q = '\0';
1358         *pp = p;
1359         return -1;
1360     }
1361     if (*p == '\"') {
1362         p++;
1363         while (*p != '\0' && *p != '\"') {
1364             if (*p == '\\') {
1365                 p++;
1366                 c = *p++;
1367                 switch(c) {
1368                 case 'n':
1369                     c = '\n';
1370                     break;
1371                 case 'r':
1372                     c = '\r';
1373                     break;
1374                 case '\\':
1375                 case '\'':
1376                 case '\"':
1377                     break;
1378                 default:
1379                     qemu_printf("unsupported escape code: '\\%c'\n", c);
1380                     goto fail;
1381                 }
1382                 if ((q - buf) < buf_size - 1) {
1383                     *q++ = c;
1384                 }
1385             } else {
1386                 if ((q - buf) < buf_size - 1) {
1387                     *q++ = *p;
1388                 }
1389                 p++;
1390             }
1391         }
1392         if (*p != '\"') {
1393             qemu_printf("unterminated string\n");
1394             goto fail;
1395         }
1396         p++;
1397     } else {
1398         while (*p != '\0' && !isspace(*p)) {
1399             if ((q - buf) < buf_size - 1) {
1400                 *q++ = *p;
1401             }
1402             p++;
1403         }
1404     }
1405     *q = '\0';
1406     *pp = p;
1407     return 0;
1408 }
1409
1410 static int default_fmt_format = 'x';
1411 static int default_fmt_size = 4;
1412
1413 #define MAX_ARGS 16
1414
1415 static void monitor_handle_command(const char *cmdline)
1416 {
1417     const char *p, *pstart, *typestr;
1418     char *q;
1419     int c, nb_args, len, i, has_arg;
1420     term_cmd_t *cmd;
1421     char cmdname[256];
1422     char buf[1024];
1423     void *str_allocated[MAX_ARGS];
1424     void *args[MAX_ARGS];
1425
1426 #ifdef DEBUG
1427     term_printf("command='%s'\n", cmdline);
1428 #endif
1429
1430     /* extract the command name */
1431     p = cmdline;
1432     q = cmdname;
1433     while (isspace(*p))
1434         p++;
1435     if (*p == '\0')
1436         return;
1437     pstart = p;
1438     while (*p != '\0' && *p != '/' && !isspace(*p))
1439         p++;
1440     len = p - pstart;
1441     if (len > sizeof(cmdname) - 1)
1442         len = sizeof(cmdname) - 1;
1443     memcpy(cmdname, pstart, len);
1444     cmdname[len] = '\0';
1445
1446     /* find the command */
1447     for(cmd = term_cmds; cmd->name != NULL; cmd++) {
1448         if (compare_cmd(cmdname, cmd->name))
1449             goto found;
1450     }
1451     term_printf("unknown command: '%s'\n", cmdname);
1452     return;
1453  found:
1454
1455     for(i = 0; i < MAX_ARGS; i++)
1456         str_allocated[i] = NULL;
1457
1458     /* parse the parameters */
1459     typestr = cmd->args_type;
1460     nb_args = 0;
1461     for(;;) {
1462         c = *typestr;
1463         if (c == '\0')
1464             break;
1465         typestr++;
1466         switch(c) {
1467         case 'F':
1468         case 'B':
1469         case 's':
1470             {
1471                 int ret;
1472                 char *str;
1473
1474                 while (isspace(*p))
1475                     p++;
1476                 if (*typestr == '?') {
1477                     typestr++;
1478                     if (*p == '\0') {
1479                         /* no optional string: NULL argument */
1480                         str = NULL;
1481                         goto add_str;
1482                     }
1483                 }
1484                 ret = get_str(buf, sizeof(buf), &p);
1485                 if (ret < 0) {
1486                     switch(c) {
1487                     case 'F':
1488                         term_printf("%s: filename expected\n", cmdname);
1489                         break;
1490                     case 'B':
1491                         term_printf("%s: block device name expected\n", cmdname);
1492                         break;
1493                     default:
1494                         term_printf("%s: string expected\n", cmdname);
1495                         break;
1496                     }
1497                     goto fail;
1498                 }
1499                 str = qemu_malloc(strlen(buf) + 1);
1500                 strcpy(str, buf);
1501                 str_allocated[nb_args] = str;
1502             add_str:
1503                 if (nb_args >= MAX_ARGS) {
1504                 error_args:
1505                     term_printf("%s: too many arguments\n", cmdname);
1506                     goto fail;
1507                 }
1508                 args[nb_args++] = str;
1509             }
1510             break;
1511         case '/':
1512             {
1513                 int count, format, size;
1514
1515                 while (isspace(*p))
1516                     p++;
1517                 if (*p == '/') {
1518                     /* format found */
1519                     p++;
1520                     count = 1;
1521                     if (isdigit(*p)) {
1522                         count = 0;
1523                         while (isdigit(*p)) {
1524                             count = count * 10 + (*p - '0');
1525                             p++;
1526                         }
1527                     }
1528                     size = -1;
1529                     format = -1;
1530                     for(;;) {
1531                         switch(*p) {
1532                         case 'o':
1533                         case 'd':
1534                         case 'u':
1535                         case 'x':
1536                         case 'i':
1537                         case 'c':
1538                             format = *p++;
1539                             break;
1540                         case 'b':
1541                             size = 1;
1542                             p++;
1543                             break;
1544                         case 'h':
1545                             size = 2;
1546                             p++;
1547                             break;
1548                         case 'w':
1549                             size = 4;
1550                             p++;
1551                             break;
1552                         case 'g':
1553                         case 'L':
1554                             size = 8;
1555                             p++;
1556                             break;
1557                         default:
1558                             goto next;
1559                         }
1560                     }
1561                 next:
1562                     if (*p != '\0' && !isspace(*p)) {
1563                         term_printf("invalid char in format: '%c'\n", *p);
1564                         goto fail;
1565                     }
1566                     if (format < 0)
1567                         format = default_fmt_format;
1568                     if (format != 'i') {
1569                         /* for 'i', not specifying a size gives -1 as size */
1570                         if (size < 0)
1571                             size = default_fmt_size;
1572                     }
1573                     default_fmt_size = size;
1574                     default_fmt_format = format;
1575                 } else {
1576                     count = 1;
1577                     format = default_fmt_format;
1578                     if (format != 'i') {
1579                         size = default_fmt_size;
1580                     } else {
1581                         size = -1;
1582                     }
1583                 }
1584                 if (nb_args + 3 > MAX_ARGS)
1585                     goto error_args;
1586                 args[nb_args++] = (void*)count;
1587                 args[nb_args++] = (void*)format;
1588                 args[nb_args++] = (void*)size;
1589             }
1590             break;
1591         case 'i':
1592             {
1593                 int val;
1594                 while (isspace(*p))
1595                     p++;
1596                 if (*typestr == '?' || *typestr == '.') {
1597                     typestr++;
1598                     if (*typestr == '?') {
1599                         if (*p == '\0')
1600                             has_arg = 0;
1601                         else
1602                             has_arg = 1;
1603                     } else {
1604                         if (*p == '.') {
1605                             p++;
1606                             while (isspace(*p))
1607                                 p++;
1608                             has_arg = 1;
1609                         } else {
1610                             has_arg = 0;
1611                         }
1612                     }
1613                     if (nb_args >= MAX_ARGS)
1614                         goto error_args;
1615                     args[nb_args++] = (void *)has_arg;
1616                     if (!has_arg) {
1617                         if (nb_args >= MAX_ARGS)
1618                             goto error_args;
1619                         val = -1;
1620                         goto add_num;
1621                     }
1622                 }
1623                 if (get_expr(&val, &p))
1624                     goto fail;
1625             add_num:
1626                 if (nb_args >= MAX_ARGS)
1627                     goto error_args;
1628                 args[nb_args++] = (void *)val;
1629             }
1630             break;
1631         case '-':
1632             {
1633                 int has_option;
1634                 /* option */
1635
1636                 c = *typestr++;
1637                 if (c == '\0')
1638                     goto bad_type;
1639                 while (isspace(*p))
1640                     p++;
1641                 has_option = 0;
1642                 if (*p == '-') {
1643                     p++;
1644                     if (*p != c) {
1645                         term_printf("%s: unsupported option -%c\n",
1646                                     cmdname, *p);
1647                         goto fail;
1648                     }
1649                     p++;
1650                     has_option = 1;
1651                 }
1652                 if (nb_args >= MAX_ARGS)
1653                     goto error_args;
1654                 args[nb_args++] = (void *)has_option;
1655             }
1656             break;
1657         default:
1658         bad_type:
1659             term_printf("%s: unknown type '%c'\n", cmdname, c);
1660             goto fail;
1661         }
1662     }
1663     /* check that all arguments were parsed */
1664     while (isspace(*p))
1665         p++;
1666     if (*p != '\0') {
1667         term_printf("%s: extraneous characters at the end of line\n",
1668                     cmdname);
1669         goto fail;
1670     }
1671
1672     switch(nb_args) {
1673     case 0:
1674         cmd->handler();
1675         break;
1676     case 1:
1677         cmd->handler(args[0]);
1678         break;
1679     case 2:
1680         cmd->handler(args[0], args[1]);
1681         break;
1682     case 3:
1683         cmd->handler(args[0], args[1], args[2]);
1684         break;
1685     case 4:
1686         cmd->handler(args[0], args[1], args[2], args[3]);
1687         break;
1688     case 5:
1689         cmd->handler(args[0], args[1], args[2], args[3], args[4]);
1690         break;
1691     case 6:
1692         cmd->handler(args[0], args[1], args[2], args[3], args[4], args[5]);
1693         break;
1694     default:
1695         term_printf("unsupported number of arguments: %d\n", nb_args);
1696         goto fail;
1697     }
1698  fail:
1699     for(i = 0; i < MAX_ARGS; i++)
1700         qemu_free(str_allocated[i]);
1701     return;
1702 }
1703
1704 static void cmd_completion(const char *name, const char *list)
1705 {
1706     const char *p, *pstart;
1707     char cmd[128];
1708     int len;
1709
1710     p = list;
1711     for(;;) {
1712         pstart = p;
1713         p = strchr(p, '|');
1714         if (!p)
1715             p = pstart + strlen(pstart);
1716         len = p - pstart;
1717         if (len > sizeof(cmd) - 2)
1718             len = sizeof(cmd) - 2;
1719         memcpy(cmd, pstart, len);
1720         cmd[len] = '\0';
1721         if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
1722             add_completion(cmd);
1723         }
1724         if (*p == '\0')
1725             break;
1726         p++;
1727     }
1728 }
1729
1730 static void file_completion(const char *input)
1731 {
1732     DIR *ffs;
1733     struct dirent *d;
1734     char path[1024];
1735     char file[1024], file_prefix[1024];
1736     int input_path_len;
1737     const char *p;
1738
1739     p = strrchr(input, '/');
1740     if (!p) {
1741         input_path_len = 0;
1742         pstrcpy(file_prefix, sizeof(file_prefix), input);
1743         strcpy(path, ".");
1744     } else {
1745         input_path_len = p - input + 1;
1746         memcpy(path, input, input_path_len);
1747         if (input_path_len > sizeof(path) - 1)
1748             input_path_len = sizeof(path) - 1;
1749         path[input_path_len] = '\0';
1750         pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
1751     }
1752 #ifdef DEBUG_COMPLETION
1753     term_printf("input='%s' path='%s' prefix='%s'\n", input, path, file_prefix);
1754 #endif
1755     ffs = opendir(path);
1756     if (!ffs)
1757         return;
1758     for(;;) {
1759         struct stat sb;
1760         d = readdir(ffs);
1761         if (!d)
1762             break;
1763         if (strstart(d->d_name, file_prefix, NULL)) {
1764             memcpy(file, input, input_path_len);
1765             strcpy(file + input_path_len, d->d_name);
1766             /* stat the file to find out if it's a directory.
1767              * In that case add a slash to speed up typing long paths
1768              */
1769             stat(file, &sb);
1770             if(S_ISDIR(sb.st_mode))
1771                 strcat(file, "/");
1772             add_completion(file);
1773         }
1774     }
1775     closedir(ffs);
1776 }
1777
1778 static void block_completion_it(void *opaque, const char *name)
1779 {
1780     const char *input = opaque;
1781
1782     if (input[0] == '\0' ||
1783         !strncmp(name, (char *)input, strlen(input))) {
1784         add_completion(name);
1785     }
1786 }
1787
1788 /* NOTE: this parser is an approximate form of the real command parser */
1789 static void parse_cmdline(const char *cmdline,
1790                          int *pnb_args, char **args)
1791 {
1792     const char *p;
1793     int nb_args, ret;
1794     char buf[1024];
1795
1796     p = cmdline;
1797     nb_args = 0;
1798     for(;;) {
1799         while (isspace(*p))
1800             p++;
1801         if (*p == '\0')
1802             break;
1803         if (nb_args >= MAX_ARGS)
1804             break;
1805         ret = get_str(buf, sizeof(buf), &p);
1806         args[nb_args] = qemu_strdup(buf);
1807         nb_args++;
1808         if (ret < 0)
1809             break;
1810     }
1811     *pnb_args = nb_args;
1812 }
1813
1814 void readline_find_completion(const char *cmdline)
1815 {
1816     const char *cmdname;
1817     char *args[MAX_ARGS];
1818     int nb_args, i, len;
1819     const char *ptype, *str;
1820     term_cmd_t *cmd;
1821
1822     parse_cmdline(cmdline, &nb_args, args);
1823 #ifdef DEBUG_COMPLETION
1824     for(i = 0; i < nb_args; i++) {
1825         term_printf("arg%d = '%s'\n", i, (char *)args[i]);
1826     }
1827 #endif
1828
1829     /* if the line ends with a space, it means we want to complete the
1830        next arg */
1831     len = strlen(cmdline);
1832     if (len > 0 && isspace(cmdline[len - 1])) {
1833         if (nb_args >= MAX_ARGS)
1834             return;
1835         args[nb_args++] = qemu_strdup("");
1836     }
1837     if (nb_args <= 1) {
1838         /* command completion */
1839         if (nb_args == 0)
1840             cmdname = "";
1841         else
1842             cmdname = args[0];
1843         completion_index = strlen(cmdname);
1844         for(cmd = term_cmds; cmd->name != NULL; cmd++) {
1845             cmd_completion(cmdname, cmd->name);
1846         }
1847     } else {
1848         /* find the command */
1849         for(cmd = term_cmds; cmd->name != NULL; cmd++) {
1850             if (compare_cmd(args[0], cmd->name))
1851                 goto found;
1852         }
1853         return;
1854     found:
1855         ptype = cmd->args_type;
1856         for(i = 0; i < nb_args - 2; i++) {
1857             if (*ptype != '\0') {
1858                 ptype++;
1859                 while (*ptype == '?')
1860                     ptype++;
1861             }
1862         }
1863         str = args[nb_args - 1];
1864         switch(*ptype) {
1865         case 'F':
1866             /* file completion */
1867             completion_index = strlen(str);
1868             file_completion(str);
1869             break;
1870         case 'B':
1871             /* block device name completion */
1872             completion_index = strlen(str);
1873             bdrv_iterate(block_completion_it, (void *)str);
1874             break;
1875         case 's':
1876             /* XXX: more generic ? */
1877             if (!strcmp(cmd->name, "info")) {
1878                 completion_index = strlen(str);
1879                 for(cmd = info_cmds; cmd->name != NULL; cmd++) {
1880                     cmd_completion(str, cmd->name);
1881                 }
1882             }
1883             break;
1884         default:
1885             break;
1886         }
1887     }
1888     for(i = 0; i < nb_args; i++)
1889         qemu_free(args[i]);
1890 }
1891
1892 static int term_can_read(void *opaque)
1893 {
1894     return 128;
1895 }
1896
1897 static void term_read(void *opaque, const uint8_t *buf, int size)
1898 {
1899     int i;
1900     for(i = 0; i < size; i++)
1901         readline_handle_byte(buf[i]);
1902 }
1903
1904 static void monitor_start_input(void);
1905
1906 static void monitor_handle_command1(void *opaque, const char *cmdline)
1907 {
1908     monitor_handle_command(cmdline);
1909     monitor_start_input();
1910 }
1911
1912 static void monitor_start_input(void)
1913 {
1914     readline_start("(qemu) ", 0, monitor_handle_command1, NULL);
1915 }
1916
1917 void monitor_init(CharDriverState *hd, int show_banner)
1918 {
1919     monitor_hd = hd;
1920     if (show_banner) {
1921         term_printf("QEMU %s monitor - type 'help' for more information\n",
1922                     QEMU_VERSION);
1923     }
1924     qemu_chr_add_read_handler(hd, term_can_read, term_read, NULL);
1925     monitor_start_input();
1926 }
1927
1928 /* XXX: use threads ? */
1929 /* modal monitor readline */
1930 static int monitor_readline_started;
1931 static char *monitor_readline_buf;
1932 static int monitor_readline_buf_size;
1933
1934 static void monitor_readline_cb(void *opaque, const char *input)
1935 {
1936     pstrcpy(monitor_readline_buf, monitor_readline_buf_size, input);
1937     monitor_readline_started = 0;
1938 }
1939
1940 void monitor_readline(const char *prompt, int is_password,
1941                       char *buf, int buf_size)
1942 {
1943     if (is_password) {
1944         qemu_chr_send_event(monitor_hd, CHR_EVENT_FOCUS);
1945     }
1946     readline_start(prompt, is_password, monitor_readline_cb, NULL);
1947     monitor_readline_buf = buf;
1948     monitor_readline_buf_size = buf_size;
1949     monitor_readline_started = 1;
1950     while (monitor_readline_started) {
1951         main_loop_wait(10);
1952     }
1953 }