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