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'          32 bit integer
  42  * 'l'          target long (32 or 64 bit)
  43  * '/'          optional gdb-like print format (like "/10x")
  44  *
  45  * '?'          optional type (for 'F', 's' and 'i')
  46  *
  47  */
  48
  49 typedef struct term_cmd_t {
  50     const char *name;
  51     const char *args_type;
  52     void (*handler)();
  53     const char *params;
  54     const char *help;
  55 } term_cmd_t;
  56
  57 static CharDriverState *monitor_hd;
  58
  59 static term_cmd_t term_cmds[];
  60 static term_cmd_t info_cmds[];
  61
  62 static char term_outbuf[1024];
  63 static int term_outbuf_index;
  64
  65 static void monitor_start_input(void);
  66
  67 void term_flush(void)
  68 {
  69     if (term_outbuf_index > 0) {
  70         qemu_chr_write(monitor_hd, term_outbuf, term_outbuf_index);
  71         term_outbuf_index = 0;
  72     }
  73 }
  74
  75 /* flush at every end of line or if the buffer is full */
  76 void term_puts(const char *str)
  77 {
  78     int c;
  79     for(;;) {
  80         c = *str++;
  81         if (c == '\0')
  82             break;
  83         term_outbuf[term_outbuf_index++] = c;
  84         if (term_outbuf_index >= sizeof(term_outbuf) ||
  85             c == '\n')
  86             term_flush();
  87     }
  88 }
  89
  90 void term_vprintf(const char *fmt, va_list ap)
  91 {
  92     char buf[4096];
  93     vsnprintf(buf, sizeof(buf), fmt, ap);
  94     term_puts(buf);
  95 }
  96
  97 void term_printf(const char *fmt, ...)
  98 {
  99     va_list ap;
 100     va_start(ap, fmt);
 101     term_vprintf(fmt, ap);
 102     va_end(ap);
 103 }
 104
 105 static int monitor_fprintf(FILE *stream, const char *fmt, ...)
 106 {
 107     va_list ap;
 108     va_start(ap, fmt);
 109     term_vprintf(fmt, ap);
 110     va_end(ap);
 111     return 0;
 112 }
 113
 114 static int compare_cmd(const char *name, const char *list)
 115 {
 116     const char *p, *pstart;
 117     int len;
 118     len = strlen(name);
 119     p = list;
 120     for(;;) {
 121         pstart = p;
 122         p = strchr(p, '|');
 123         if (!p)
 124             p = pstart + strlen(pstart);
 125         if ((p - pstart) == len && !memcmp(pstart, name, len))
 126             return 1;
 127         if (*p == '\0')
 128             break;
 129         p++;
 130     }
 131     return 0;
 132 }
 133
 134 static void help_cmd1(term_cmd_t *cmds, const char *prefix, const char *name)
 135 {
 136     term_cmd_t *cmd;
 137
 138     for(cmd = cmds; cmd->name != NULL; cmd++) {
 139         if (!name || !strcmp(name, cmd->name))
 140             term_printf("%s%s %s -- %s\n", prefix, cmd->name, cmd->params, cmd->help);
 141     }
 142 }
 143
 144 static void help_cmd(const char *name)
 145 {
 146     if (name && !strcmp(name, "info")) {
 147         help_cmd1(info_cmds, "info ", NULL);
 148     } else {
 149         help_cmd1(term_cmds, "", name);
 150         if (name && !strcmp(name, "log")) {
 151             CPULogItem *item;
 152             term_printf("Log items (comma separated):\n");
 153             term_printf("%-10s %s\n", "none", "remove all logs");
 154             for(item = cpu_log_items; item->mask != 0; item++) {
 155                 term_printf("%-10s %s\n", item->name, item->help);
 156             }
 157         }
 158     }
 159 }
 160
 161 static void do_help(const char *name)
 162 {
 163     help_cmd(name);
 164 }
 165
 166 static void do_commit(void)
 167 {
 168     int i;
 169
 170     for (i = 0; i < MAX_DISKS; i++) {
 171         if (bs_table[i]) {
 172             bdrv_commit(bs_table[i]);
 173         }
 174     }
 175 }
 176
 177 static void do_info(const char *item)
 178 {
 179     term_cmd_t *cmd;
 180
 181     if (!item)
 182         goto help;
 183     for(cmd = info_cmds; cmd->name != NULL; cmd++) {
 184         if (compare_cmd(item, cmd->name))
 185             goto found;
 186     }
 187  help:
 188     help_cmd("info");
 189     return;
 190  found:
 191     cmd->handler();
 192 }
 193
 194 static void do_info_version(void)
 195 {
 196   term_printf("%s\n", QEMU_VERSION);
 197 }
 198
 199 static void do_info_network(void)
 200 {
 201     int i, j;
 202     NetDriverState *nd;
 203
 204     for(i = 0; i < nb_nics; i++) {
 205         nd = &nd_table[i];
 206         term_printf("%d: ifname=%s macaddr=", i, nd->ifname);
 207         for(j = 0; j < 6; j++) {
 208             if (j > 0)
 209                 term_printf(":");
 210             term_printf("%02x", nd->macaddr[j]);
 211         }
 212         term_printf("\n");
 213     }
 214 }
 215
 216 static void do_info_block(void)
 217 {
 218     bdrv_info();
 219 }
 220
 221 static void do_info_registers(void)
 222 {
 223 #ifdef TARGET_I386
 224     cpu_dump_state(cpu_single_env, NULL, monitor_fprintf,
 225                    X86_DUMP_FPU);
 226 #else
 227     cpu_dump_state(cpu_single_env, NULL, monitor_fprintf,
 228                    0);
 229 #endif
 230 }
 231
 232 static void do_info_jit(void)
 233 {
 234     dump_exec_info(NULL, monitor_fprintf);
 235 }
 236
 237 static void do_info_history (void)
 238 {
 239     int i;
 240     const char *str;
 241
 242     i = 0;
 243     for(;;) {
 244         str = readline_get_history(i);
 245         if (!str)
 246             break;
 247         term_printf("%d: '%s'\n", i, str);
 248         i++;
 249     }
 250 }
 251
 252 static void do_quit(void)
 253 {
 254 #ifdef USE_KQEMU
 255     kqemu_record_dump();
 256 #endif
 257     exit(0);
 258 }
 259
 260 static int eject_device(BlockDriverState *bs, int force)
 261 {
 262     if (bdrv_is_inserted(bs)) {
 263         if (!force) {
 264             if (!bdrv_is_removable(bs)) {
 265                 term_printf("device is not removable\n");
 266                 return -1;
 267             }
 268             if (bdrv_is_locked(bs)) {
 269                 term_printf("device is locked\n");
 270                 return -1;
 271             }
 272         }
 273         bdrv_close(bs);
 274     }
 275     return 0;
 276 }
 277
 278 static void do_eject(int force, const char *filename)
 279 {
 280     BlockDriverState *bs;
 281
 282     bs = bdrv_find(filename);
 283     if (!bs) {
 284         term_printf("device not found\n");
 285         return;
 286     }
 287     eject_device(bs, force);
 288 }
 289
 290 static void do_change(const char *device, const char *filename)
 291 {
 292     BlockDriverState *bs;
 293     int i;
 294     char password[256];
 295
 296     bs = bdrv_find(device);
 297     if (!bs) {
 298         term_printf("device not found\n");
 299         return;
 300     }
 301     if (eject_device(bs, 0) < 0)
 302         return;
 303     bdrv_open(bs, filename, 0);
 304     if (bdrv_is_encrypted(bs)) {
 305         term_printf("%s is encrypted.\n", device);
 306         for(i = 0; i < 3; i++) {
 307             monitor_readline("Password: ", 1, password, sizeof(password));
 308             if (bdrv_set_key(bs, password) == 0)
 309                 break;
 310             term_printf("invalid password\n");
 311         }
 312     }
 313 }
 314
 315 static void do_screen_dump(const char *filename)
 316 {
 317     vga_screen_dump(filename);
 318 }
 319
 320 static void do_log(const char *items)
 321 {
 322     int mask;
 323
 324     if (!strcmp(items, "none")) {
 325         mask = 0;
 326     } else {
 327         mask = cpu_str_to_log_mask(items);
 328         if (!mask) {
 329             help_cmd("log");
 330             return;
 331         }
 332     }
 333     cpu_set_log(mask);
 334 }
 335
 336 static void do_savevm(const char *filename)
 337 {
 338     if (qemu_savevm(filename) < 0)
 339         term_printf("I/O error when saving VM to '%s'\n", filename);
 340 }
 341
 342 static void do_loadvm(const char *filename)
 343 {
 344     if (qemu_loadvm(filename) < 0)
 345         term_printf("I/O error when loading VM from '%s'\n", filename);
 346 }
 347
 348 static void do_stop(void)
 349 {
 350     vm_stop(EXCP_INTERRUPT);
 351 }
 352
 353 static void do_cont(void)
 354 {
 355     vm_start();
 356 }
 357
 358 #ifdef CONFIG_GDBSTUB
 359 static void do_gdbserver(int has_port, int port)
 360 {
 361     if (!has_port)
 362         port = DEFAULT_GDBSTUB_PORT;
 363     if (gdbserver_start(port) < 0) {
 364         qemu_printf("Could not open gdbserver socket on port %d\n", port);
 365     } else {
 366         qemu_printf("Waiting gdb connection on port %d\n", port);
 367     }
 368 }
 369 #endif
 370
 371 static void term_printc(int c)
 372 {
 373     term_printf("'");
 374     switch(c) {
 375     case '\'':
 376         term_printf("\\'");
 377         break;
 378     case '\\':
 379         term_printf("\\\\");
 380         break;
 381     case '\n':
 382         term_printf("\\n");
 383         break;
 384     case '\r':
 385         term_printf("\\r");
 386         break;
 387     default:
 388         if (c >= 32 && c <= 126) {
 389             term_printf("%c", c);
 390         } else {
 391             term_printf("\\x%02x", c);
 392         }
 393         break;
 394     }
 395     term_printf("'");
 396 }
 397
 398 static void memory_dump(int count, int format, int wsize,
 399                         target_ulong addr, int is_physical)
 400 {
 401     int nb_per_line, l, line_size, i, max_digits, len;
 402     uint8_t buf[16];
 403     uint64_t v;
 404
 405     if (format == 'i') {
 406         int flags;
 407         flags = 0;
 408 #ifdef TARGET_I386
 409         if (wsize == 2) {
 410             flags = 1;
 411         } else if (wsize == 4) {
 412             flags = 0;
 413         } else {
 414             /* as default we use the current CS size */
 415             flags = 0;
 416             if (!(cpu_single_env->segs[R_CS].flags & DESC_B_MASK))
 417                 flags = 1;
 418         }
 419 #endif
 420         monitor_disas(addr, count, is_physical, flags);
 421         return;
 422     }
 423
 424     len = wsize * count;
 425     if (wsize == 1)
 426         line_size = 8;
 427     else
 428         line_size = 16;
 429     nb_per_line = line_size / wsize;
 430     max_digits = 0;
 431
 432     switch(format) {
 433     case 'o':
 434         max_digits = (wsize * 8 + 2) / 3;
 435         break;
 436     default:
 437     case 'x':
 438         max_digits = (wsize * 8) / 4;
 439         break;
 440     case 'u':
 441     case 'd':
 442         max_digits = (wsize * 8 * 10 + 32) / 33;
 443         break;
 444     case 'c':
 445         wsize = 1;
 446         break;
 447     }
 448
 449     while (len > 0) {
 450         term_printf(TARGET_FMT_lx ":", addr);
 451         l = len;
 452         if (l > line_size)
 453             l = line_size;
 454         if (is_physical) {
 455             cpu_physical_memory_rw(addr, buf, l, 0);
 456         } else {
 457             cpu_memory_rw_debug(cpu_single_env, addr, buf, l, 0);
 458         }
 459         i = 0;
 460         while (i < l) {
 461             switch(wsize) {
 462             default:
 463             case 1:
 464                 v = ldub_raw(buf + i);
 465                 break;
 466             case 2:
 467                 v = lduw_raw(buf + i);
 468                 break;
 469             case 4:
 470                 v = (uint32_t)ldl_raw(buf + i);
 471                 break;
 472             case 8:
 473                 v = ldq_raw(buf + i);
 474                 break;
 475             }
 476             term_printf(" ");
 477             switch(format) {
 478             case 'o':
 479                 term_printf("%#*llo", max_digits, v);
 480                 break;
 481             case 'x':
 482                 term_printf("0x%0*llx", max_digits, v);
 483                 break;
 484             case 'u':
 485                 term_printf("%*llu", max_digits, v);
 486                 break;
 487             case 'd':
 488                 term_printf("%*lld", max_digits, v);
 489                 break;
 490             case 'c':
 491                 term_printc(v);
 492                 break;
 493             }
 494             i += wsize;
 495         }
 496         term_printf("\n");
 497         addr += l;
 498         len -= l;
 499     }
 500 }
 501
 502 #if TARGET_LONG_BITS == 64
 503 #define GET_TLONG(h, l) (((uint64_t)(h) << 32) | (l))
 504 #else
 505 #define GET_TLONG(h, l) (l)
 506 #endif
 507
 508 static void do_memory_dump(int count, int format, int size,
 509                            uint32_t addrh, uint32_t addrl)
 510 {
 511     target_long addr = GET_TLONG(addrh, addrl);
 512     memory_dump(count, format, size, addr, 0);
 513 }
 514
 515 static void do_physical_memory_dump(int count, int format, int size,
 516                                     uint32_t addrh, uint32_t addrl)
 517
 518 {
 519     target_long addr = GET_TLONG(addrh, addrl);
 520     memory_dump(count, format, size, addr, 1);
 521 }
 522
 523 static void do_print(int count, int format, int size, unsigned int valh, unsigned int vall)
 524 {
 525     target_long val = GET_TLONG(valh, vall);
 526 #if TARGET_LONG_BITS == 32
 527     switch(format) {
 528     case 'o':
 529         term_printf("%#o", val);
 530         break;
 531     case 'x':
 532         term_printf("%#x", val);
 533         break;
 534     case 'u':
 535         term_printf("%u", val);
 536         break;
 537     default:
 538     case 'd':
 539         term_printf("%d", val);
 540         break;
 541     case 'c':
 542         term_printc(val);
 543         break;
 544     }
 545 #else
 546     switch(format) {
 547     case 'o':
 548         term_printf("%#llo", val);
 549         break;
 550     case 'x':
 551         term_printf("%#llx", val);
 552         break;
 553     case 'u':
 554         term_printf("%llu", val);
 555         break;
 556     default:
 557     case 'd':
 558         term_printf("%lld", val);
 559         break;
 560     case 'c':
 561         term_printc(val);
 562         break;
 563     }
 564 #endif
 565     term_printf("\n");
 566 }
 567
 568 static void do_sum(uint32_t start, uint32_t size)
 569 {
 570     uint32_t addr;
 571     uint8_t buf[1];
 572     uint16_t sum;
 573
 574     sum = 0;
 575     for(addr = start; addr < (start + size); addr++) {
 576         cpu_physical_memory_rw(addr, buf, 1, 0);
 577         /* BSD sum algorithm ('sum' Unix command) */
 578         sum = (sum >> 1) | (sum << 15);
 579         sum += buf[0];
 580     }
 581     term_printf("%05d\n", sum);
 582 }
 583
 584 typedef struct {
 585     int keycode;
 586     const char *name;
 587 } KeyDef;
 588
 589 static const KeyDef key_defs[] = {
 590     { 0x2a, "shift" },
 591     { 0x36, "shift_r" },
 592
 593     { 0x38, "alt" },
 594     { 0xb8, "alt_r" },
 595     { 0x1d, "ctrl" },
 596     { 0x9d, "ctrl_r" },
 597
 598     { 0xdd, "menu" },
 599
 600     { 0x01, "esc" },
 601
 602     { 0x02, "1" },
 603     { 0x03, "2" },
 604     { 0x04, "3" },
 605     { 0x05, "4" },
 606     { 0x06, "5" },
 607     { 0x07, "6" },
 608     { 0x08, "7" },
 609     { 0x09, "8" },
 610     { 0x0a, "9" },
 611     { 0x0b, "0" },
 612     { 0x0e, "backspace" },
 613
 614     { 0x0f, "tab" },
 615     { 0x10, "q" },
 616     { 0x11, "w" },
 617     { 0x12, "e" },
 618     { 0x13, "r" },
 619     { 0x14, "t" },
 620     { 0x15, "y" },
 621     { 0x16, "u" },
 622     { 0x17, "i" },
 623     { 0x18, "o" },
 624     { 0x19, "p" },
 625
 626     { 0x1c, "ret" },
 627
 628     { 0x1e, "a" },
 629     { 0x1f, "s" },
 630     { 0x20, "d" },
 631     { 0x21, "f" },
 632     { 0x22, "g" },
 633     { 0x23, "h" },
 634     { 0x24, "j" },
 635     { 0x25, "k" },
 636     { 0x26, "l" },
 637
 638     { 0x2c, "z" },
 639     { 0x2d, "x" },
 640     { 0x2e, "c" },
 641     { 0x2f, "v" },
 642     { 0x30, "b" },
 643     { 0x31, "n" },
 644     { 0x32, "m" },
 645
 646     { 0x39, "spc" },
 647     { 0x3a, "caps_lock" },
 648     { 0x3b, "f1" },
 649     { 0x3c, "f2" },
 650     { 0x3d, "f3" },
 651     { 0x3e, "f4" },
 652     { 0x3f, "f5" },
 653     { 0x40, "f6" },
 654     { 0x41, "f7" },
 655     { 0x42, "f8" },
 656     { 0x43, "f9" },
 657     { 0x44, "f10" },
 658     { 0x45, "num_lock" },
 659     { 0x46, "scroll_lock" },
 660
 661     { 0x56, "<" },
 662
 663     { 0x57, "f11" },
 664     { 0x58, "f12" },
 665
 666     { 0xb7, "print" },
 667
 668     { 0xc7, "home" },
 669     { 0xc9, "pgup" },
 670     { 0xd1, "pgdn" },
 671     { 0xcf, "end" },
 672
 673     { 0xcb, "left" },
 674     { 0xc8, "up" },
 675     { 0xd0, "down" },
 676     { 0xcd, "right" },
 677
 678     { 0xd2, "insert" },
 679     { 0xd3, "delete" },
 680     { 0, NULL },
 681 };
 682
 683 static int get_keycode(const char *key)
 684 {
 685     const KeyDef *p;
 686
 687     for(p = key_defs; p->name != NULL; p++) {
 688         if (!strcmp(key, p->name))
 689             return p->keycode;
 690     }
 691     return -1;
 692 }
 693
 694 static void do_send_key(const char *string)
 695 {
 696     char keybuf[16], *q;
 697     uint8_t keycodes[16];
 698     const char *p;
 699     int nb_keycodes, keycode, i;
 700
 701     nb_keycodes = 0;
 702     p = string;
 703     while (*p != '\0') {
 704         q = keybuf;
 705         while (*p != '\0' && *p != '-') {
 706             if ((q - keybuf) < sizeof(keybuf) - 1) {
 707                 *q++ = *p;
 708             }
 709             p++;
 710         }
 711         *q = '\0';
 712         keycode = get_keycode(keybuf);
 713         if (keycode < 0) {
 714             term_printf("unknown key: '%s'\n", keybuf);
 715             return;
 716         }
 717         keycodes[nb_keycodes++] = keycode;
 718         if (*p == '\0')
 719             break;
 720         p++;
 721     }
 722     /* key down events */
 723     for(i = 0; i < nb_keycodes; i++) {
 724         keycode = keycodes[i];
 725         if (keycode & 0x80)
 726             kbd_put_keycode(0xe0);
 727         kbd_put_keycode(keycode & 0x7f);
 728     }
 729     /* key up events */
 730     for(i = nb_keycodes - 1; i >= 0; i--) {
 731         keycode = keycodes[i];
 732         if (keycode & 0x80)
 733             kbd_put_keycode(0xe0);
 734         kbd_put_keycode(keycode | 0x80);
 735     }
 736 }
 737
 738 static void do_ioport_read(int count, int format, int size, int addr, int has_index, int index)
 739 {
 740     uint32_t val;
 741     int suffix;
 742
 743     if (has_index) {
 744         cpu_outb(NULL, addr & 0xffff, index & 0xff);
 745         addr++;
 746     }
 747     addr &= 0xffff;
 748
 749     switch(size) {
 750     default:
 751     case 1:
 752         val = cpu_inb(NULL, addr);
 753         suffix = 'b';
 754         break;
 755     case 2:
 756         val = cpu_inw(NULL, addr);
 757         suffix = 'w';
 758         break;
 759     case 4:
 760         val = cpu_inl(NULL, addr);
 761         suffix = 'l';
 762         break;
 763     }
 764     term_printf("port%c[0x%04x] = %#0*x\n",
 765                 suffix, addr, size * 2, val);
 766 }
 767
 768 static void do_system_reset(void)
 769 {
 770     qemu_system_reset_request();
 771 }
 772
 773 static void do_system_powerdown(void)
 774 {
 775     qemu_system_powerdown_request();
 776 }
 777
 778 #if defined(TARGET_I386)
 779 static void print_pte(uint32_t addr, uint32_t pte, uint32_t mask)
 780 {
 781     term_printf("%08x: %08x %c%c%c%c%c%c%c%c\n",
 782                 addr,
 783                 pte & mask,
 784                 pte & PG_GLOBAL_MASK ? 'G' : '-',
 785                 pte & PG_PSE_MASK ? 'P' : '-',
 786                 pte & PG_DIRTY_MASK ? 'D' : '-',
 787                 pte & PG_ACCESSED_MASK ? 'A' : '-',
 788                 pte & PG_PCD_MASK ? 'C' : '-',
 789                 pte & PG_PWT_MASK ? 'T' : '-',
 790                 pte & PG_USER_MASK ? 'U' : '-',
 791                 pte & PG_RW_MASK ? 'W' : '-');
 792 }
 793
 794 static void tlb_info(void)
 795 {
 796     CPUState *env = cpu_single_env;
 797     int l1, l2;
 798     uint32_t pgd, pde, pte;
 799
 800     if (!(env->cr[0] & CR0_PG_MASK)) {
 801         term_printf("PG disabled\n");
 802         return;
 803     }
 804     pgd = env->cr[3] & ~0xfff;
 805     for(l1 = 0; l1 < 1024; l1++) {
 806         cpu_physical_memory_read(pgd + l1 * 4, (uint8_t *)&pde, 4);
 807         pde = le32_to_cpu(pde);
 808         if (pde & PG_PRESENT_MASK) {
 809             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
 810                 print_pte((l1 << 22), pde, ~((1 << 20) - 1));
 811             } else {
 812                 for(l2 = 0; l2 < 1024; l2++) {
 813                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4,
 814                                              (uint8_t *)&pte, 4);
 815                     pte = le32_to_cpu(pte);
 816                     if (pte & PG_PRESENT_MASK) {
 817                         print_pte((l1 << 22) + (l2 << 12),
 818                                   pte & ~PG_PSE_MASK,
 819                                   ~0xfff);
 820                     }
 821                 }
 822             }
 823         }
 824     }
 825 }
 826
 827 static void mem_print(uint32_t *pstart, int *plast_prot,
 828                       uint32_t end, int prot)
 829 {
 830     int prot1;
 831     prot1 = *plast_prot;
 832     if (prot != prot1) {
 833         if (*pstart != -1) {
 834             term_printf("%08x-%08x %08x %c%c%c\n",
 835                         *pstart, end, end - *pstart,
 836                         prot1 & PG_USER_MASK ? 'u' : '-',
 837                         'r',
 838                         prot1 & PG_RW_MASK ? 'w' : '-');
 839         }
 840         if (prot != 0)
 841             *pstart = end;
 842         else
 843             *pstart = -1;
 844         *plast_prot = prot;
 845     }
 846 }
 847
 848 static void mem_info(void)
 849 {
 850     CPUState *env = cpu_single_env;
 851     int l1, l2, prot, last_prot;
 852     uint32_t pgd, pde, pte, start, end;
 853
 854     if (!(env->cr[0] & CR0_PG_MASK)) {
 855         term_printf("PG disabled\n");
 856         return;
 857     }
 858     pgd = env->cr[3] & ~0xfff;
 859     last_prot = 0;
 860     start = -1;
 861     for(l1 = 0; l1 < 1024; l1++) {
 862         cpu_physical_memory_read(pgd + l1 * 4, (uint8_t *)&pde, 4);
 863         pde = le32_to_cpu(pde);
 864         end = l1 << 22;
 865         if (pde & PG_PRESENT_MASK) {
 866             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
 867                 prot = pde & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 868                 mem_print(&start, &last_prot, end, prot);
 869             } else {
 870                 for(l2 = 0; l2 < 1024; l2++) {
 871                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4,
 872                                              (uint8_t *)&pte, 4);
 873                     pte = le32_to_cpu(pte);
 874                     end = (l1 << 22) + (l2 << 12);
 875                     if (pte & PG_PRESENT_MASK) {
 876                         prot = pte & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 877                     } else {
 878                         prot = 0;
 879                     }
 880                     mem_print(&start, &last_prot, end, prot);
 881                 }
 882             }
 883         } else {
 884             prot = 0;
 885             mem_print(&start, &last_prot, end, prot);
 886         }
 887     }
 888 }
 889 #endif
 890
 891 static void do_info_kqemu(void)
 892 {
 893 #ifdef USE_KQEMU
 894     int val;
 895     val = 0;
 896     if (cpu_single_env)
 897         val = cpu_single_env->kqemu_enabled;
 898     term_printf("kqemu is %s\n", val ? "enabled" : "disabled");
 899 #else
 900     term_printf("kqemu support is not compiled\n");
 901 #endif
 902 }
 903
 904 static term_cmd_t term_cmds[] = {
 905     { "help|?", "s?", do_help,
 906       "[cmd]", "show the help" },
 907     { "commit", "", do_commit,
 908       "", "commit changes to the disk images (if -snapshot is used)" },
 909     { "info", "s?", do_info,
 910       "subcommand", "show various information about the system state" },
 911     { "q|quit", "", do_quit,
 912       "", "quit the emulator" },
 913     { "eject", "-fB", do_eject,
 914       "[-f] device", "eject a removable media (use -f to force it)" },
 915     { "change", "BF", do_change,
 916       "device filename", "change a removable media" },
 917     { "screendump", "F", do_screen_dump,
 918       "filename", "save screen into PPM image 'filename'" },
 919     { "log", "s", do_log,
 920       "item1[,...]", "activate logging of the specified items to '/tmp/qemu.log'" },
 921     { "savevm", "F", do_savevm,
 922       "filename", "save the whole virtual machine state to 'filename'" },
 923     { "loadvm", "F", do_loadvm,
 924       "filename", "restore the whole virtual machine state from 'filename'" },
 925     { "stop", "", do_stop,
 926       "", "stop emulation", },
 927     { "c|cont", "", do_cont,
 928       "", "resume emulation", },
 929 #ifdef CONFIG_GDBSTUB
 930     { "gdbserver", "i?", do_gdbserver,
 931       "[port]", "start gdbserver session (default port=1234)", },
 932 #endif
 933     { "x", "/l", do_memory_dump,
 934       "/fmt addr", "virtual memory dump starting at 'addr'", },
 935     { "xp", "/l", do_physical_memory_dump,
 936       "/fmt addr", "physical memory dump starting at 'addr'", },
 937     { "p|print", "/l", do_print,
 938       "/fmt expr", "print expression value (use $reg for CPU register access)", },
 939     { "i", "/ii.", do_ioport_read,
 940       "/fmt addr", "I/O port read" },
 941
 942     { "sendkey", "s", do_send_key,
 943       "keys", "send keys to the VM (e.g. 'sendkey ctrl-alt-f1')" },
 944     { "system_reset", "", do_system_reset,
 945       "", "reset the system" },
 946     { "system_powerdown", "", do_system_powerdown,
 947       "", "send system power down event" },
 948     { "sum", "ii", do_sum,
 949       "addr size", "compute the checksum of a memory region" },
 950     { "usb_add", "s", do_usb_add,
 951       "device", "add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')" },
 952     { "usb_del", "s", do_usb_del,
 953       "device", "remove USB device 'bus.addr'" },
 954     { NULL, NULL, },
 955 };
 956
 957 static term_cmd_t info_cmds[] = {
 958     { "version", "", do_info_version,
 959       "", "show the version of qemu" },
 960     { "network", "", do_info_network,
 961       "", "show the network state" },
 962     { "block", "", do_info_block,
 963       "", "show the block devices" },
 964     { "registers", "", do_info_registers,
 965       "", "show the cpu registers" },
 966     { "history", "", do_info_history,
 967       "", "show the command line history", },
 968     { "irq", "", irq_info,
 969       "", "show the interrupts statistics (if available)", },
 970     { "pic", "", pic_info,
 971       "", "show i8259 (PIC) state", },
 972     { "pci", "", pci_info,
 973       "", "show PCI info", },
 974 #if defined(TARGET_I386)
 975     { "tlb", "", tlb_info,
 976       "", "show virtual to physical memory mappings", },
 977     { "mem", "", mem_info,
 978       "", "show the active virtual memory mappings", },
 979 #endif
 980     { "jit", "", do_info_jit,
 981       "", "show dynamic compiler info", },
 982     { "kqemu", "", do_info_kqemu,
 983       "", "show kqemu information", },
 984     { "usb", "", usb_info,
 985       "", "show guest USB devices", },
 986     { "usbhost", "", usb_host_info,
 987       "", "show host USB devices", },
 988     { NULL, NULL, },
 989 };
 990
 991 /*******************************************************************/
 992
 993 static const char *pch;
 994 static jmp_buf expr_env;
 995
 996 #define MD_TLONG 0
 997 #define MD_I32   1
 998
 999 typedef struct MonitorDef {
1000     const char *name;
1001     int offset;
1002     target_long (*get_value)(struct MonitorDef *md, int val);
1003     int type;
1004 } MonitorDef;
1005
1006 #if defined(TARGET_I386)
1007 static target_long monitor_get_pc (struct MonitorDef *md, int val)
1008 {
1009     return cpu_single_env->eip + cpu_single_env->segs[R_CS].base;
1010 }
1011 #endif
1012
1013 #if defined(TARGET_PPC)
1014 static target_long monitor_get_ccr (struct MonitorDef *md, int val)
1015 {
1016     unsigned int u;
1017     int i;
1018
1019     u = 0;
1020     for (i = 0; i < 8; i++)
1021         u |= cpu_single_env->crf[i] << (32 - (4 * i));
1022
1023     return u;
1024 }
1025
1026 static target_long monitor_get_msr (struct MonitorDef *md, int val)
1027 {
1028     return (cpu_single_env->msr[MSR_POW] << MSR_POW) |
1029         (cpu_single_env->msr[MSR_ILE] << MSR_ILE) |
1030         (cpu_single_env->msr[MSR_EE] << MSR_EE) |
1031         (cpu_single_env->msr[MSR_PR] << MSR_PR) |
1032         (cpu_single_env->msr[MSR_FP] << MSR_FP) |
1033         (cpu_single_env->msr[MSR_ME] << MSR_ME) |
1034         (cpu_single_env->msr[MSR_FE0] << MSR_FE0) |
1035         (cpu_single_env->msr[MSR_SE] << MSR_SE) |
1036         (cpu_single_env->msr[MSR_BE] << MSR_BE) |
1037         (cpu_single_env->msr[MSR_FE1] << MSR_FE1) |
1038         (cpu_single_env->msr[MSR_IP] << MSR_IP) |
1039         (cpu_single_env->msr[MSR_IR] << MSR_IR) |
1040         (cpu_single_env->msr[MSR_DR] << MSR_DR) |
1041         (cpu_single_env->msr[MSR_RI] << MSR_RI) |
1042         (cpu_single_env->msr[MSR_LE] << MSR_LE);
1043 }
1044
1045 static target_long monitor_get_xer (struct MonitorDef *md, int val)
1046 {
1047     return (cpu_single_env->xer[XER_SO] << XER_SO) |
1048         (cpu_single_env->xer[XER_OV] << XER_OV) |
1049         (cpu_single_env->xer[XER_CA] << XER_CA) |
1050         (cpu_single_env->xer[XER_BC] << XER_BC);
1051 }
1052
1053 static target_long monitor_get_decr (struct MonitorDef *md, int val)
1054 {
1055     return cpu_ppc_load_decr(cpu_single_env);
1056 }
1057
1058 static target_long monitor_get_tbu (struct MonitorDef *md, int val)
1059 {
1060     return cpu_ppc_load_tbu(cpu_single_env);
1061 }
1062
1063 static target_long monitor_get_tbl (struct MonitorDef *md, int val)
1064 {
1065     return cpu_ppc_load_tbl(cpu_single_env);
1066 }
1067 #endif
1068
1069 #if defined(TARGET_SPARC)
1070 #ifndef TARGET_SPARC64
1071 static target_long monitor_get_psr (struct MonitorDef *md, int val)
1072 {
1073     return GET_PSR(cpu_single_env);
1074 }
1075 #endif
1076
1077 static target_long monitor_get_reg(struct MonitorDef *md, int val)
1078 {
1079     return cpu_single_env->regwptr[val];
1080 }
1081 #endif
1082
1083 static MonitorDef monitor_defs[] = {
1084 #ifdef TARGET_I386
1085
1086 #define SEG(name, seg) \
1087     { name, offsetof(CPUState, segs[seg].selector), NULL, MD_I32 },\
1088     { name ".base", offsetof(CPUState, segs[seg].base) },\
1089     { name ".limit", offsetof(CPUState, segs[seg].limit), NULL, MD_I32 },
1090
1091     { "eax", offsetof(CPUState, regs[0]) },
1092     { "ecx", offsetof(CPUState, regs[1]) },
1093     { "edx", offsetof(CPUState, regs[2]) },
1094     { "ebx", offsetof(CPUState, regs[3]) },
1095     { "esp|sp", offsetof(CPUState, regs[4]) },
1096     { "ebp|fp", offsetof(CPUState, regs[5]) },
1097     { "esi", offsetof(CPUState, regs[6]) },
1098     { "edi", offsetof(CPUState, regs[7]) },
1099 #ifdef TARGET_X86_64
1100     { "r8", offsetof(CPUState, regs[8]) },
1101     { "r9", offsetof(CPUState, regs[9]) },
1102     { "r10", offsetof(CPUState, regs[10]) },
1103     { "r11", offsetof(CPUState, regs[11]) },
1104     { "r12", offsetof(CPUState, regs[12]) },
1105     { "r13", offsetof(CPUState, regs[13]) },
1106     { "r14", offsetof(CPUState, regs[14]) },
1107     { "r15", offsetof(CPUState, regs[15]) },
1108 #endif
1109     { "eflags", offsetof(CPUState, eflags) },
1110     { "eip", offsetof(CPUState, eip) },
1111     SEG("cs", R_CS)
1112     SEG("ds", R_DS)
1113     SEG("es", R_ES)
1114     SEG("ss", R_SS)
1115     SEG("fs", R_FS)
1116     SEG("gs", R_GS)
1117     { "pc", 0, monitor_get_pc, },
1118 #elif defined(TARGET_PPC)
1119     { "r0", offsetof(CPUState, gpr[0]) },
1120     { "r1", offsetof(CPUState, gpr[1]) },
1121     { "r2", offsetof(CPUState, gpr[2]) },
1122     { "r3", offsetof(CPUState, gpr[3]) },
1123     { "r4", offsetof(CPUState, gpr[4]) },
1124     { "r5", offsetof(CPUState, gpr[5]) },
1125     { "r6", offsetof(CPUState, gpr[6]) },
1126     { "r7", offsetof(CPUState, gpr[7]) },
1127     { "r8", offsetof(CPUState, gpr[8]) },
1128     { "r9", offsetof(CPUState, gpr[9]) },
1129     { "r10", offsetof(CPUState, gpr[10]) },
1130     { "r11", offsetof(CPUState, gpr[11]) },
1131     { "r12", offsetof(CPUState, gpr[12]) },
1132     { "r13", offsetof(CPUState, gpr[13]) },
1133     { "r14", offsetof(CPUState, gpr[14]) },
1134     { "r15", offsetof(CPUState, gpr[15]) },
1135     { "r16", offsetof(CPUState, gpr[16]) },
1136     { "r17", offsetof(CPUState, gpr[17]) },
1137     { "r18", offsetof(CPUState, gpr[18]) },
1138     { "r19", offsetof(CPUState, gpr[19]) },
1139     { "r20", offsetof(CPUState, gpr[20]) },
1140     { "r21", offsetof(CPUState, gpr[21]) },
1141     { "r22", offsetof(CPUState, gpr[22]) },
1142     { "r23", offsetof(CPUState, gpr[23]) },
1143     { "r24", offsetof(CPUState, gpr[24]) },
1144     { "r25", offsetof(CPUState, gpr[25]) },
1145     { "r26", offsetof(CPUState, gpr[26]) },
1146     { "r27", offsetof(CPUState, gpr[27]) },
1147     { "r28", offsetof(CPUState, gpr[28]) },
1148     { "r29", offsetof(CPUState, gpr[29]) },
1149     { "r30", offsetof(CPUState, gpr[30]) },
1150     { "r31", offsetof(CPUState, gpr[31]) },
1151     { "nip|pc", offsetof(CPUState, nip) },
1152     { "lr", offsetof(CPUState, lr) },
1153     { "ctr", offsetof(CPUState, ctr) },
1154     { "decr", 0, &monitor_get_decr, },
1155     { "ccr", 0, &monitor_get_ccr, },
1156     { "msr", 0, &monitor_get_msr, },
1157     { "xer", 0, &monitor_get_xer, },
1158     { "tbu", 0, &monitor_get_tbu, },
1159     { "tbl", 0, &monitor_get_tbl, },
1160     { "sdr1", offsetof(CPUState, sdr1) },
1161     { "sr0", offsetof(CPUState, sr[0]) },
1162     { "sr1", offsetof(CPUState, sr[1]) },
1163     { "sr2", offsetof(CPUState, sr[2]) },
1164     { "sr3", offsetof(CPUState, sr[3]) },
1165     { "sr4", offsetof(CPUState, sr[4]) },
1166     { "sr5", offsetof(CPUState, sr[5]) },
1167     { "sr6", offsetof(CPUState, sr[6]) },
1168     { "sr7", offsetof(CPUState, sr[7]) },
1169     { "sr8", offsetof(CPUState, sr[8]) },
1170     { "sr9", offsetof(CPUState, sr[9]) },
1171     { "sr10", offsetof(CPUState, sr[10]) },
1172     { "sr11", offsetof(CPUState, sr[11]) },
1173     { "sr12", offsetof(CPUState, sr[12]) },
1174     { "sr13", offsetof(CPUState, sr[13]) },
1175     { "sr14", offsetof(CPUState, sr[14]) },
1176     { "sr15", offsetof(CPUState, sr[15]) },
1177     /* Too lazy to put BATs and SPRs ... */
1178 #elif defined(TARGET_SPARC)
1179     { "g0", offsetof(CPUState, gregs[0]) },
1180     { "g1", offsetof(CPUState, gregs[1]) },
1181     { "g2", offsetof(CPUState, gregs[2]) },
1182     { "g3", offsetof(CPUState, gregs[3]) },
1183     { "g4", offsetof(CPUState, gregs[4]) },
1184     { "g5", offsetof(CPUState, gregs[5]) },
1185     { "g6", offsetof(CPUState, gregs[6]) },
1186     { "g7", offsetof(CPUState, gregs[7]) },
1187     { "o0", 0, monitor_get_reg },
1188     { "o1", 1, monitor_get_reg },
1189     { "o2", 2, monitor_get_reg },
1190     { "o3", 3, monitor_get_reg },
1191     { "o4", 4, monitor_get_reg },
1192     { "o5", 5, monitor_get_reg },
1193     { "o6", 6, monitor_get_reg },
1194     { "o7", 7, monitor_get_reg },
1195     { "l0", 8, monitor_get_reg },
1196     { "l1", 9, monitor_get_reg },
1197     { "l2", 10, monitor_get_reg },
1198     { "l3", 11, monitor_get_reg },
1199     { "l4", 12, monitor_get_reg },
1200     { "l5", 13, monitor_get_reg },
1201     { "l6", 14, monitor_get_reg },
1202     { "l7", 15, monitor_get_reg },
1203     { "i0", 16, monitor_get_reg },
1204     { "i1", 17, monitor_get_reg },
1205     { "i2", 18, monitor_get_reg },
1206     { "i3", 19, monitor_get_reg },
1207     { "i4", 20, monitor_get_reg },
1208     { "i5", 21, monitor_get_reg },
1209     { "i6", 22, monitor_get_reg },
1210     { "i7", 23, monitor_get_reg },
1211     { "pc", offsetof(CPUState, pc) },
1212     { "npc", offsetof(CPUState, npc) },
1213     { "y", offsetof(CPUState, y) },
1214 #ifndef TARGET_SPARC64
1215     { "psr", 0, &monitor_get_psr, },
1216     { "wim", offsetof(CPUState, wim) },
1217 #endif
1218     { "tbr", offsetof(CPUState, tbr) },
1219     { "fsr", offsetof(CPUState, fsr) },
1220     { "f0", offsetof(CPUState, fpr[0]) },
1221     { "f1", offsetof(CPUState, fpr[1]) },
1222     { "f2", offsetof(CPUState, fpr[2]) },
1223     { "f3", offsetof(CPUState, fpr[3]) },
1224     { "f4", offsetof(CPUState, fpr[4]) },
1225     { "f5", offsetof(CPUState, fpr[5]) },
1226     { "f6", offsetof(CPUState, fpr[6]) },
1227     { "f7", offsetof(CPUState, fpr[7]) },
1228     { "f8", offsetof(CPUState, fpr[8]) },
1229     { "f9", offsetof(CPUState, fpr[9]) },
1230     { "f10", offsetof(CPUState, fpr[10]) },
1231     { "f11", offsetof(CPUState, fpr[11]) },
1232     { "f12", offsetof(CPUState, fpr[12]) },
1233     { "f13", offsetof(CPUState, fpr[13]) },
1234     { "f14", offsetof(CPUState, fpr[14]) },
1235     { "f15", offsetof(CPUState, fpr[15]) },
1236     { "f16", offsetof(CPUState, fpr[16]) },
1237     { "f17", offsetof(CPUState, fpr[17]) },
1238     { "f18", offsetof(CPUState, fpr[18]) },
1239     { "f19", offsetof(CPUState, fpr[19]) },
1240     { "f20", offsetof(CPUState, fpr[20]) },
1241     { "f21", offsetof(CPUState, fpr[21]) },
1242     { "f22", offsetof(CPUState, fpr[22]) },
1243     { "f23", offsetof(CPUState, fpr[23]) },
1244     { "f24", offsetof(CPUState, fpr[24]) },
1245     { "f25", offsetof(CPUState, fpr[25]) },
1246     { "f26", offsetof(CPUState, fpr[26]) },
1247     { "f27", offsetof(CPUState, fpr[27]) },
1248     { "f28", offsetof(CPUState, fpr[28]) },
1249     { "f29", offsetof(CPUState, fpr[29]) },
1250     { "f30", offsetof(CPUState, fpr[30]) },
1251     { "f31", offsetof(CPUState, fpr[31]) },
1252 #ifdef TARGET_SPARC64
1253     { "f32", offsetof(CPUState, fpr[32]) },
1254     { "f34", offsetof(CPUState, fpr[34]) },
1255     { "f36", offsetof(CPUState, fpr[36]) },
1256     { "f38", offsetof(CPUState, fpr[38]) },
1257     { "f40", offsetof(CPUState, fpr[40]) },
1258     { "f42", offsetof(CPUState, fpr[42]) },
1259     { "f44", offsetof(CPUState, fpr[44]) },
1260     { "f46", offsetof(CPUState, fpr[46]) },
1261     { "f48", offsetof(CPUState, fpr[48]) },
1262     { "f50", offsetof(CPUState, fpr[50]) },
1263     { "f52", offsetof(CPUState, fpr[52]) },
1264     { "f54", offsetof(CPUState, fpr[54]) },
1265     { "f56", offsetof(CPUState, fpr[56]) },
1266     { "f58", offsetof(CPUState, fpr[58]) },
1267     { "f60", offsetof(CPUState, fpr[60]) },
1268     { "f62", offsetof(CPUState, fpr[62]) },
1269     { "asi", offsetof(CPUState, asi) },
1270     { "pstate", offsetof(CPUState, pstate) },
1271     { "cansave", offsetof(CPUState, cansave) },
1272     { "canrestore", offsetof(CPUState, canrestore) },
1273     { "otherwin", offsetof(CPUState, otherwin) },
1274     { "wstate", offsetof(CPUState, wstate) },
1275     { "cleanwin", offsetof(CPUState, cleanwin) },
1276     { "fprs", offsetof(CPUState, fprs) },
1277 #endif
1278 #endif
1279     { NULL },
1280 };
1281
1282 static void expr_error(const char *fmt)
1283 {
1284     term_printf(fmt);
1285     term_printf("\n");
1286     longjmp(expr_env, 1);
1287 }
1288
1289 static int get_monitor_def(target_long *pval, const char *name)
1290 {
1291     MonitorDef *md;
1292     void *ptr;
1293
1294     for(md = monitor_defs; md->name != NULL; md++) {
1295         if (compare_cmd(name, md->name)) {
1296             if (md->get_value) {
1297                 *pval = md->get_value(md, md->offset);
1298             } else {
1299                 ptr = (uint8_t *)cpu_single_env + md->offset;
1300                 switch(md->type) {
1301                 case MD_I32:
1302                     *pval = *(int32_t *)ptr;
1303                     break;
1304                 case MD_TLONG:
1305                     *pval = *(target_long *)ptr;
1306                     break;
1307                 default:
1308                     *pval = 0;
1309                     break;
1310                 }
1311             }
1312             return 0;
1313         }
1314     }
1315     return -1;
1316 }
1317
1318 static void next(void)
1319 {
1320     if (pch != '\0') {
1321         pch++;
1322         while (isspace(*pch))
1323             pch++;
1324     }
1325 }
1326
1327 static target_long expr_sum(void);
1328
1329 static target_long expr_unary(void)
1330 {
1331     target_long n;
1332     char *p;
1333
1334     switch(*pch) {
1335     case '+':
1336         next();
1337         n = expr_unary();
1338         break;
1339     case '-':
1340         next();
1341         n = -expr_unary();
1342         break;
1343     case '~':
1344         next();
1345         n = ~expr_unary();
1346         break;
1347     case '(':
1348         next();
1349         n = expr_sum();
1350         if (*pch != ')') {
1351             expr_error("')' expected");
1352         }
1353         next();
1354         break;
1355     case '\'':
1356         pch++;
1357         if (*pch == '\0')
1358             expr_error("character constant expected");
1359         n = *pch;
1360         pch++;
1361         if (*pch != '\'')
1362             expr_error("missing terminating \' character");
1363         next();
1364         break;
1365     case '$':
1366         {
1367             char buf[128], *q;
1368
1369             pch++;
1370             q = buf;
1371             while ((*pch >= 'a' && *pch <= 'z') ||
1372                    (*pch >= 'A' && *pch <= 'Z') ||
1373                    (*pch >= '0' && *pch <= '9') ||
1374                    *pch == '_' || *pch == '.') {
1375                 if ((q - buf) < sizeof(buf) - 1)
1376                     *q++ = *pch;
1377                 pch++;
1378             }
1379             while (isspace(*pch))
1380                 pch++;
1381             *q = 0;
1382             if (get_monitor_def(&n, buf))
1383                 expr_error("unknown register");
1384         }
1385         break;
1386     case '\0':
1387         expr_error("unexpected end of expression");
1388         n = 0;
1389         break;
1390     default:
1391         n = strtoul(pch, &p, 0);
1392         if (pch == p) {
1393             expr_error("invalid char in expression");
1394         }
1395         pch = p;
1396         while (isspace(*pch))
1397             pch++;
1398         break;
1399     }
1400     return n;
1401 }
1402
1403
1404 static target_long expr_prod(void)
1405 {
1406     target_long val, val2;
1407     int op;
1408
1409     val = expr_unary();
1410     for(;;) {
1411         op = *pch;
1412         if (op != '*' && op != '/' && op != '%')
1413             break;
1414         next();
1415         val2 = expr_unary();
1416         switch(op) {
1417         default:
1418         case '*':
1419             val *= val2;
1420             break;
1421         case '/':
1422         case '%':
1423             if (val2 == 0)
1424                 expr_error("division by zero");
1425             if (op == '/')
1426                 val /= val2;
1427             else
1428                 val %= val2;
1429             break;
1430         }
1431     }
1432     return val;
1433 }
1434
1435 static target_long expr_logic(void)
1436 {
1437     target_long val, val2;
1438     int op;
1439
1440     val = expr_prod();
1441     for(;;) {
1442         op = *pch;
1443         if (op != '&' && op != '|' && op != '^')
1444             break;
1445         next();
1446         val2 = expr_prod();
1447         switch(op) {
1448         default:
1449         case '&':
1450             val &= val2;
1451             break;
1452         case '|':
1453             val |= val2;
1454             break;
1455         case '^':
1456             val ^= val2;
1457             break;
1458         }
1459     }
1460     return val;
1461 }
1462
1463 static target_long expr_sum(void)
1464 {
1465     target_long val, val2;
1466     int op;
1467
1468     val = expr_logic();
1469     for(;;) {
1470         op = *pch;
1471         if (op != '+' && op != '-')
1472             break;
1473         next();
1474         val2 = expr_logic();
1475         if (op == '+')
1476             val += val2;
1477         else
1478             val -= val2;
1479     }
1480     return val;
1481 }
1482
1483 static int get_expr(target_long *pval, const char **pp)
1484 {
1485     pch = *pp;
1486     if (setjmp(expr_env)) {
1487         *pp = pch;
1488         return -1;
1489     }
1490     while (isspace(*pch))
1491         pch++;
1492     *pval = expr_sum();
1493     *pp = pch;
1494     return 0;
1495 }
1496
1497 static int get_str(char *buf, int buf_size, const char **pp)
1498 {
1499     const char *p;
1500     char *q;
1501     int c;
1502
1503     q = buf;
1504     p = *pp;
1505     while (isspace(*p))
1506         p++;
1507     if (*p == '\0') {
1508     fail:
1509         *q = '\0';
1510         *pp = p;
1511         return -1;
1512     }
1513     if (*p == '\"') {
1514         p++;
1515         while (*p != '\0' && *p != '\"') {
1516             if (*p == '\\') {
1517                 p++;
1518                 c = *p++;
1519                 switch(c) {
1520                 case 'n':
1521                     c = '\n';
1522                     break;
1523                 case 'r':
1524                     c = '\r';
1525                     break;
1526                 case '\\':
1527                 case '\'':
1528                 case '\"':
1529                     break;
1530                 default:
1531                     qemu_printf("unsupported escape code: '\\%c'\n", c);
1532                     goto fail;
1533                 }
1534                 if ((q - buf) < buf_size - 1) {
1535                     *q++ = c;
1536                 }
1537             } else {
1538                 if ((q - buf) < buf_size - 1) {
1539                     *q++ = *p;
1540                 }
1541                 p++;
1542             }
1543         }
1544         if (*p != '\"') {
1545             qemu_printf("unterminated string\n");
1546             goto fail;
1547         }
1548         p++;
1549     } else {
1550         while (*p != '\0' && !isspace(*p)) {
1551             if ((q - buf) < buf_size - 1) {
1552                 *q++ = *p;
1553             }
1554             p++;
1555         }
1556     }
1557     *q = '\0';
1558     *pp = p;
1559     return 0;
1560 }
1561
1562 static int default_fmt_format = 'x';
1563 static int default_fmt_size = 4;
1564
1565 #define MAX_ARGS 16
1566
1567 static void monitor_handle_command(const char *cmdline)
1568 {
1569     const char *p, *pstart, *typestr;
1570     char *q;
1571     int c, nb_args, len, i, has_arg;
1572     term_cmd_t *cmd;
1573     char cmdname[256];
1574     char buf[1024];
1575     void *str_allocated[MAX_ARGS];
1576     void *args[MAX_ARGS];
1577
1578 #ifdef DEBUG
1579     term_printf("command='%s'\n", cmdline);
1580 #endif
1581
1582     /* extract the command name */
1583     p = cmdline;
1584     q = cmdname;
1585     while (isspace(*p))
1586         p++;
1587     if (*p == '\0')
1588         return;
1589     pstart = p;
1590     while (*p != '\0' && *p != '/' && !isspace(*p))
1591         p++;
1592     len = p - pstart;
1593     if (len > sizeof(cmdname) - 1)
1594         len = sizeof(cmdname) - 1;
1595     memcpy(cmdname, pstart, len);
1596     cmdname[len] = '\0';
1597
1598     /* find the command */
1599     for(cmd = term_cmds; cmd->name != NULL; cmd++) {
1600         if (compare_cmd(cmdname, cmd->name))
1601             goto found;
1602     }
1603     term_printf("unknown command: '%s'\n", cmdname);
1604     return;
1605  found:
1606
1607     for(i = 0; i < MAX_ARGS; i++)
1608         str_allocated[i] = NULL;
1609
1610     /* parse the parameters */
1611     typestr = cmd->args_type;
1612     nb_args = 0;
1613     for(;;) {
1614         c = *typestr;
1615         if (c == '\0')
1616             break;
1617         typestr++;
1618         switch(c) {
1619         case 'F':
1620         case 'B':
1621         case 's':
1622             {
1623                 int ret;
1624                 char *str;
1625
1626                 while (isspace(*p))
1627                     p++;
1628                 if (*typestr == '?') {
1629                     typestr++;
1630                     if (*p == '\0') {
1631                         /* no optional string: NULL argument */
1632                         str = NULL;
1633                         goto add_str;
1634                     }
1635                 }
1636                 ret = get_str(buf, sizeof(buf), &p);
1637                 if (ret < 0) {
1638                     switch(c) {
1639                     case 'F':
1640                         term_printf("%s: filename expected\n", cmdname);
1641                         break;
1642                     case 'B':
1643                         term_printf("%s: block device name expected\n", cmdname);
1644                         break;
1645                     default:
1646                         term_printf("%s: string expected\n", cmdname);
1647                         break;
1648                     }
1649                     goto fail;
1650                 }
1651                 str = qemu_malloc(strlen(buf) + 1);
1652                 strcpy(str, buf);
1653                 str_allocated[nb_args] = str;
1654             add_str:
1655                 if (nb_args >= MAX_ARGS) {
1656                 error_args:
1657                     term_printf("%s: too many arguments\n", cmdname);
1658                     goto fail;
1659                 }
1660                 args[nb_args++] = str;
1661             }
1662             break;
1663         case '/':
1664             {
1665                 int count, format, size;
1666
1667                 while (isspace(*p))
1668                     p++;
1669                 if (*p == '/') {
1670                     /* format found */
1671                     p++;
1672                     count = 1;
1673                     if (isdigit(*p)) {
1674                         count = 0;
1675                         while (isdigit(*p)) {
1676                             count = count * 10 + (*p - '0');
1677                             p++;
1678                         }
1679                     }
1680                     size = -1;
1681                     format = -1;
1682                     for(;;) {
1683                         switch(*p) {
1684                         case 'o':
1685                         case 'd':
1686                         case 'u':
1687                         case 'x':
1688                         case 'i':
1689                         case 'c':
1690                             format = *p++;
1691                             break;
1692                         case 'b':
1693                             size = 1;
1694                             p++;
1695                             break;
1696                         case 'h':
1697                             size = 2;
1698                             p++;
1699                             break;
1700                         case 'w':
1701                             size = 4;
1702                             p++;
1703                             break;
1704                         case 'g':
1705                         case 'L':
1706                             size = 8;
1707                             p++;
1708                             break;
1709                         default:
1710                             goto next;
1711                         }
1712                     }
1713                 next:
1714                     if (*p != '\0' && !isspace(*p)) {
1715                         term_printf("invalid char in format: '%c'\n", *p);
1716                         goto fail;
1717                     }
1718                     if (format < 0)
1719                         format = default_fmt_format;
1720                     if (format != 'i') {
1721                         /* for 'i', not specifying a size gives -1 as size */
1722                         if (size < 0)
1723                             size = default_fmt_size;
1724                     }
1725                     default_fmt_size = size;
1726                     default_fmt_format = format;
1727                 } else {
1728                     count = 1;
1729                     format = default_fmt_format;
1730                     if (format != 'i') {
1731                         size = default_fmt_size;
1732                     } else {
1733                         size = -1;
1734                     }
1735                 }
1736                 if (nb_args + 3 > MAX_ARGS)
1737                     goto error_args;
1738                 args[nb_args++] = (void*)count;
1739                 args[nb_args++] = (void*)format;
1740                 args[nb_args++] = (void*)size;
1741             }
1742             break;
1743         case 'i':
1744         case 'l':
1745             {
1746                 target_long val;
1747                 while (isspace(*p))
1748                     p++;
1749                 if (*typestr == '?' || *typestr == '.') {
1750                     typestr++;
1751                     if (*typestr == '?') {
1752                         if (*p == '\0')
1753                             has_arg = 0;
1754                         else
1755                             has_arg = 1;
1756                     } else {
1757                         if (*p == '.') {
1758                             p++;
1759                             while (isspace(*p))
1760                                 p++;
1761                             has_arg = 1;
1762                         } else {
1763                             has_arg = 0;
1764                         }
1765                     }
1766                     if (nb_args >= MAX_ARGS)
1767                         goto error_args;
1768                     args[nb_args++] = (void *)has_arg;
1769                     if (!has_arg) {
1770                         if (nb_args >= MAX_ARGS)
1771                             goto error_args;
1772                         val = -1;
1773                         goto add_num;
1774                     }
1775                 }
1776                 if (get_expr(&val, &p))
1777                     goto fail;
1778             add_num:
1779                 if (c == 'i') {
1780                     if (nb_args >= MAX_ARGS)
1781                         goto error_args;
1782                     args[nb_args++] = (void *)(int)val;
1783                 } else {
1784                     if ((nb_args + 1) >= MAX_ARGS)
1785                         goto error_args;
1786 #if TARGET_LONG_BITS == 64
1787                     args[nb_args++] = (void *)(int)((val >> 32) & 0xffffffff);
1788 #else
1789                     args[nb_args++] = (void *)0;
1790 #endif
1791                     args[nb_args++] = (void *)(int)(val & 0xffffffff);
1792                 }
1793             }
1794             break;
1795         case '-':
1796             {
1797                 int has_option;
1798                 /* option */
1799
1800                 c = *typestr++;
1801                 if (c == '\0')
1802                     goto bad_type;
1803                 while (isspace(*p))
1804                     p++;
1805                 has_option = 0;
1806                 if (*p == '-') {
1807                     p++;
1808                     if (*p != c) {
1809                         term_printf("%s: unsupported option -%c\n",
1810                                     cmdname, *p);
1811                         goto fail;
1812                     }
1813                     p++;
1814                     has_option = 1;
1815                 }
1816                 if (nb_args >= MAX_ARGS)
1817                     goto error_args;
1818                 args[nb_args++] = (void *)has_option;
1819             }
1820             break;
1821         default:
1822         bad_type:
1823             term_printf("%s: unknown type '%c'\n", cmdname, c);
1824             goto fail;
1825         }
1826     }
1827     /* check that all arguments were parsed */
1828     while (isspace(*p))
1829         p++;
1830     if (*p != '\0') {
1831         term_printf("%s: extraneous characters at the end of line\n",
1832                     cmdname);
1833         goto fail;
1834     }
1835
1836     switch(nb_args) {
1837     case 0:
1838         cmd->handler();
1839         break;
1840     case 1:
1841         cmd->handler(args[0]);
1842         break;
1843     case 2:
1844         cmd->handler(args[0], args[1]);
1845         break;
1846     case 3:
1847         cmd->handler(args[0], args[1], args[2]);
1848         break;
1849     case 4:
1850         cmd->handler(args[0], args[1], args[2], args[3]);
1851         break;
1852     case 5:
1853         cmd->handler(args[0], args[1], args[2], args[3], args[4]);
1854         break;
1855     case 6:
1856         cmd->handler(args[0], args[1], args[2], args[3], args[4], args[5]);
1857         break;
1858     default:
1859         term_printf("unsupported number of arguments: %d\n", nb_args);
1860         goto fail;
1861     }
1862  fail:
1863     for(i = 0; i < MAX_ARGS; i++)
1864         qemu_free(str_allocated[i]);
1865     return;
1866 }
1867
1868 static void cmd_completion(const char *name, const char *list)
1869 {
1870     const char *p, *pstart;
1871     char cmd[128];
1872     int len;
1873
1874     p = list;
1875     for(;;) {
1876         pstart = p;
1877         p = strchr(p, '|');
1878         if (!p)
1879             p = pstart + strlen(pstart);
1880         len = p - pstart;
1881         if (len > sizeof(cmd) - 2)
1882             len = sizeof(cmd) - 2;
1883         memcpy(cmd, pstart, len);
1884         cmd[len] = '\0';
1885         if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
1886             add_completion(cmd);
1887         }
1888         if (*p == '\0')
1889             break;
1890         p++;
1891     }
1892 }
1893
1894 static void file_completion(const char *input)
1895 {
1896     DIR *ffs;
1897     struct dirent *d;
1898     char path[1024];
1899     char file[1024], file_prefix[1024];
1900     int input_path_len;
1901     const char *p;
1902
1903     p = strrchr(input, '/');
1904     if (!p) {
1905         input_path_len = 0;
1906         pstrcpy(file_prefix, sizeof(file_prefix), input);
1907         strcpy(path, ".");
1908     } else {
1909         input_path_len = p - input + 1;
1910         memcpy(path, input, input_path_len);
1911         if (input_path_len > sizeof(path) - 1)
1912             input_path_len = sizeof(path) - 1;
1913         path[input_path_len] = '\0';
1914         pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
1915     }
1916 #ifdef DEBUG_COMPLETION
1917     term_printf("input='%s' path='%s' prefix='%s'\n", input, path, file_prefix);
1918 #endif
1919     ffs = opendir(path);
1920     if (!ffs)
1921         return;
1922     for(;;) {
1923         struct stat sb;
1924         d = readdir(ffs);
1925         if (!d)
1926             break;
1927         if (strstart(d->d_name, file_prefix, NULL)) {
1928             memcpy(file, input, input_path_len);
1929             strcpy(file + input_path_len, d->d_name);
1930             /* stat the file to find out if it's a directory.
1931              * In that case add a slash to speed up typing long paths
1932              */
1933             stat(file, &sb);
1934             if(S_ISDIR(sb.st_mode))
1935                 strcat(file, "/");
1936             add_completion(file);
1937         }
1938     }
1939     closedir(ffs);
1940 }
1941
1942 static void block_completion_it(void *opaque, const char *name)
1943 {
1944     const char *input = opaque;
1945
1946     if (input[0] == '\0' ||
1947         !strncmp(name, (char *)input, strlen(input))) {
1948         add_completion(name);
1949     }
1950 }
1951
1952 /* NOTE: this parser is an approximate form of the real command parser */
1953 static void parse_cmdline(const char *cmdline,
1954                          int *pnb_args, char **args)
1955 {
1956     const char *p;
1957     int nb_args, ret;
1958     char buf[1024];
1959
1960     p = cmdline;
1961     nb_args = 0;
1962     for(;;) {
1963         while (isspace(*p))
1964             p++;
1965         if (*p == '\0')
1966             break;
1967         if (nb_args >= MAX_ARGS)
1968             break;
1969         ret = get_str(buf, sizeof(buf), &p);
1970         args[nb_args] = qemu_strdup(buf);
1971         nb_args++;
1972         if (ret < 0)
1973             break;
1974     }
1975     *pnb_args = nb_args;
1976 }
1977
1978 void readline_find_completion(const char *cmdline)
1979 {
1980     const char *cmdname;
1981     char *args[MAX_ARGS];
1982     int nb_args, i, len;
1983     const char *ptype, *str;
1984     term_cmd_t *cmd;
1985
1986     parse_cmdline(cmdline, &nb_args, args);
1987 #ifdef DEBUG_COMPLETION
1988     for(i = 0; i < nb_args; i++) {
1989         term_printf("arg%d = '%s'\n", i, (char *)args[i]);
1990     }
1991 #endif
1992
1993     /* if the line ends with a space, it means we want to complete the
1994        next arg */
1995     len = strlen(cmdline);
1996     if (len > 0 && isspace(cmdline[len - 1])) {
1997         if (nb_args >= MAX_ARGS)
1998             return;
1999         args[nb_args++] = qemu_strdup("");
2000     }
2001     if (nb_args <= 1) {
2002         /* command completion */
2003         if (nb_args == 0)
2004             cmdname = "";
2005         else
2006             cmdname = args[0];
2007         completion_index = strlen(cmdname);
2008         for(cmd = term_cmds; cmd->name != NULL; cmd++) {
2009             cmd_completion(cmdname, cmd->name);
2010         }
2011     } else {
2012         /* find the command */
2013         for(cmd = term_cmds; cmd->name != NULL; cmd++) {
2014             if (compare_cmd(args[0], cmd->name))
2015                 goto found;
2016         }
2017         return;
2018     found:
2019         ptype = cmd->args_type;
2020         for(i = 0; i < nb_args - 2; i++) {
2021             if (*ptype != '\0') {
2022                 ptype++;
2023                 while (*ptype == '?')
2024                     ptype++;
2025             }
2026         }
2027         str = args[nb_args - 1];
2028         switch(*ptype) {
2029         case 'F':
2030             /* file completion */
2031             completion_index = strlen(str);
2032             file_completion(str);
2033             break;
2034         case 'B':
2035             /* block device name completion */
2036             completion_index = strlen(str);
2037             bdrv_iterate(block_completion_it, (void *)str);
2038             break;
2039         case 's':
2040             /* XXX: more generic ? */
2041             if (!strcmp(cmd->name, "info")) {
2042                 completion_index = strlen(str);
2043                 for(cmd = info_cmds; cmd->name != NULL; cmd++) {
2044                     cmd_completion(str, cmd->name);
2045                 }
2046             }
2047             break;
2048         default:
2049             break;
2050         }
2051     }
2052     for(i = 0; i < nb_args; i++)
2053         qemu_free(args[i]);
2054 }
2055
2056 static int term_can_read(void *opaque)
2057 {
2058     return 128;
2059 }
2060
2061 static void term_read(void *opaque, const uint8_t *buf, int size)
2062 {
2063     int i;
2064     for(i = 0; i < size; i++)
2065         readline_handle_byte(buf[i]);
2066 }
2067
2068 static void monitor_start_input(void);
2069
2070 static void monitor_handle_command1(void *opaque, const char *cmdline)
2071 {
2072     monitor_handle_command(cmdline);
2073     monitor_start_input();
2074 }
2075
2076 static void monitor_start_input(void)
2077 {
2078     readline_start("(qemu) ", 0, monitor_handle_command1, NULL);
2079 }
2080
2081 void monitor_init(CharDriverState *hd, int show_banner)
2082 {
2083     monitor_hd = hd;
2084     if (show_banner) {
2085         term_printf("QEMU %s monitor - type 'help' for more information\n",
2086                     QEMU_VERSION);
2087     }
2088     qemu_chr_add_read_handler(hd, term_can_read, term_read, NULL);
2089     monitor_start_input();
2090 }
2091
2092 /* XXX: use threads ? */
2093 /* modal monitor readline */
2094 static int monitor_readline_started;
2095 static char *monitor_readline_buf;
2096 static int monitor_readline_buf_size;
2097
2098 static void monitor_readline_cb(void *opaque, const char *input)
2099 {
2100     pstrcpy(monitor_readline_buf, monitor_readline_buf_size, input);
2101     monitor_readline_started = 0;
2102 }
2103
2104 void monitor_readline(const char *prompt, int is_password,
2105                       char *buf, int buf_size)
2106 {
2107     if (is_password) {
2108         qemu_chr_send_event(monitor_hd, CHR_EVENT_FOCUS);
2109     }
2110     readline_start(prompt, is_password, monitor_readline_cb, NULL);
2111     monitor_readline_buf = buf;
2112     monitor_readline_buf_size = buf_size;
2113     monitor_readline_started = 1;
2114     while (monitor_readline_started) {
2115         main_loop_wait(10);
2116     }
2117 }