main.cc

   1 /////////////////////////////////////////////////////////////////////////
   2 // $Id: main.cc,v 1.362 2007/11/01 18:03:48 sshwarts Exp $
   3 /////////////////////////////////////////////////////////////////////////
   4 //
   5 //  Copyright (C) 2002  MandrakeSoft S.A.
   6 //
   7 //    MandrakeSoft S.A.
   8 //    43, rue d'Aboukir
   9 //    75002 Paris - France
  10 //    http://www.linux-mandrake.com/
  11 //    http://www.mandrakesoft.com/
  12 //
  13 //  This library is free software; you can redistribute it and/or
  14 //  modify it under the terms of the GNU Lesser General Public
  15 //  License as published by the Free Software Foundation; either
  16 //  version 2 of the License, or (at your option) any later version.
  17 //
  18 //  This library is distributed in the hope that it will be useful,
  19 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21 //  Lesser General Public License for more details.
  22 //
  23 //  You should have received a copy of the GNU Lesser General Public
  24 //  License along with this library; if not, write to the Free Software
  25 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  26
  27 #include "bochs.h"
  28 #include "cpu/cpu.h"
  29 #include "iodev/iodev.h"
  30
  31 #ifdef HAVE_LOCALE_H
  32 #include <locale.h>
  33 #endif
  34
  35 #if BX_WITH_SDL
  36 // since SDL redefines main() to SDL_main(), we must include SDL.h so that the
  37 // C language prototype is found.  Otherwise SDL_main() will get its name
  38 // mangled and not match what the SDL library is expecting.
  39 #include <SDL.h>
  40
  41 #if defined(macintosh)
  42 // Work around a bug in SDL 1.2.4 on MacOS X, which redefines getenv to
  43 // SDL_getenv, but then neglects to provide SDL_getenv.  It happens
  44 // because we are defining -Dmacintosh.
  45 #undef getenv
  46 #endif
  47 #endif
  48
  49 #if BX_WITH_CARBON
  50 #define Float32 KLUDGE_Float32
  51 #define Float64 KLUDGE_Float64
  52 #include <Carbon/Carbon.h>
  53 #undef Float32
  54 #undef Float64
  55 #endif
  56
  57
  58 extern "C" {
  59 #include <signal.h>
  60 }
  61
  62 #if defined(__MINGW32__) || defined(_MSC_VER)
  63 void alarm(int);
  64 #endif
  65
  66 #if BX_GUI_SIGHANDLER
  67 bx_bool bx_gui_sighandler = 0;
  68 #endif
  69
  70 #if BX_PROVIDE_DEVICE_MODELS==1
  71 // some prototypes from iodev/
  72 // I want to stay away from including iodev/iodev.h here
  73 Bit32u bx_unmapped_io_read_handler(Bit32u address, unsigned io_len);
  74 void   bx_unmapped_io_write_handler(Bit32u address, Bit32u value,
  75                                     unsigned io_len);
  76 #endif
  77
  78 void bx_init_hardware(void);
  79 void bx_init_options(void);
  80 void bx_init_bx_dbg(void);
  81
  82 static const char *divider = "========================================================================";
  83 static logfunctions thePluginLog;
  84 logfunctions *pluginlog = &thePluginLog;
  85
  86 bx_startup_flags_t bx_startup_flags;
  87 bx_bool bx_user_quit;
  88 Bit8u bx_cpu_count;
  89
  90 /* typedefs */
  91
  92 #define LOG_THIS genlog->
  93
  94 #if ( BX_PROVIDE_DEVICE_MODELS==1 )
  95 bx_pc_system_c bx_pc_system;
  96 #endif
  97
  98 bx_debug_t bx_dbg;
  99
 100 typedef BX_CPU_C *BX_CPU_C_PTR;
 101
 102 #if BX_SUPPORT_SMP
 103 // multiprocessor simulation, we need an array of cpus
 104 BOCHSAPI BX_CPU_C_PTR *bx_cpu_array = NULL;
 105 #else
 106 // single processor simulation, so there's one of everything
 107 BOCHSAPI BX_CPU_C bx_cpu;
 108 #endif
 109
 110 #if BX_PROVIDE_CPU_MEMORY==1
 111 BOCHSAPI BX_MEM_C bx_mem;
 112 #endif
 113
 114 char *bochsrc_filename = NULL;
 115
 116 void bx_print_header ()
 117 {
 118   fprintf (stderr, "%s\n", divider);
 119   char buffer[128];
 120   sprintf (buffer, "Bochs x86 Emulator %s\n", VER_STRING);
 121   bx_center_print (stderr, buffer, 72);
 122   if (REL_STRING[0]) {
 123     sprintf (buffer, "%s\n", REL_STRING);
 124     bx_center_print (stderr, buffer, 72);
 125   }
 126   fprintf (stderr, "%s\n", divider);
 127 }
 128
 129 #if BX_WITH_CARBON
 130 /* Original code by Darrell Walisser - dwaliss1@purdue.edu */
 131
 132 static void setupWorkingDirectory (char *path)
 133 {
 134     char parentdir[MAXPATHLEN];
 135     char *c;
 136
 137     strncpy ( parentdir, path, MAXPATHLEN );
 138     c = (char*) parentdir;
 139
 140     while (*c != '\0')     /* go to end */
 141         c++;
 142
 143     while (*c != '/')      /* back up to parent */
 144         c--;
 145
 146     *c = '\0';             /* cut off last part (binary name) */
 147
 148         /* chdir to the binary app's parent */
 149         int n;
 150         n = chdir (parentdir);
 151         if (n) BX_PANIC (("failed to change dir to parent"));
 152         /* chdir to the .app's parent */
 153         n = chdir ("../../../");
 154     if (n) BX_PANIC (("failed to change to ../../.."));
 155 }
 156
 157 /* Panic button to display fatal errors.
 158   Completely self contained, can't rely on carbon.cc being available */
 159 static void carbonFatalDialog(const char *error, const char *exposition)
 160 {
 161   DialogRef                     alertDialog;
 162   CFStringRef                   cfError;
 163   CFStringRef                   cfExposition;
 164   DialogItemIndex               index;
 165   AlertStdCFStringAlertParamRec alertParam = {0};
 166   fprintf(stderr, "Entering carbonFatalDialog: %s\n", error);
 167
 168   // Init libraries
 169   InitCursor();
 170   // Assemble dialog
 171   cfError = CFStringCreateWithCString(NULL, error, kCFStringEncodingASCII);
 172   if(exposition != NULL)
 173   {
 174     cfExposition = CFStringCreateWithCString(NULL, exposition, kCFStringEncodingASCII);
 175   }
 176   else { cfExposition = NULL; }
 177   alertParam.version       = kStdCFStringAlertVersionOne;
 178   alertParam.defaultText   = CFSTR("Quit");
 179   alertParam.position      = kWindowDefaultPosition;
 180   alertParam.defaultButton = kAlertStdAlertOKButton;
 181   // Display Dialog
 182   CreateStandardAlert(
 183     kAlertStopAlert,
 184     cfError,
 185     cfExposition,       /* can be NULL */
 186     &alertParam,             /* can be NULL */
 187     &alertDialog);
 188   RunStandardAlert( alertDialog, NULL, &index);
 189   // Cleanup
 190   CFRelease( cfError );
 191   if( cfExposition != NULL ) { CFRelease( cfExposition ); }
 192 }
 193 #endif
 194
 195 #if BX_DEBUGGER
 196 void print_tree(bx_param_c *node, int level)
 197 {
 198   int i;
 199   char tmpstr[BX_PATHNAME_LEN], tmpbyte[4];
 200
 201   for (i=0; i<level; i++)
 202     dbg_printf("  ");
 203   if (node == NULL) {
 204       dbg_printf("NULL pointer\n");
 205       return;
 206   }
 207   switch (node->get_type()) {
 208     case BXT_PARAM_NUM:
 209       if (((bx_param_num_c*)node)->get_base() == BASE_DEC) {
 210         dbg_printf("%s = " FMT_LL "d (number)\n", node->get_name(), ((bx_param_num_c*)node)->get64());
 211       } else {
 212         dbg_printf("%s = 0x" FMT_LL "x (hex number)\n", node->get_name(), ((bx_param_num_c*)node)->get64());
 213       }
 214       break;
 215     case BXT_PARAM_BOOL:
 216       dbg_printf("%s = %s (boolean)\n", node->get_name(), ((bx_param_bool_c*)node)->get()?"true":"false");
 217       break;
 218     case BXT_PARAM_ENUM:
 219       dbg_printf("%s = '%s' (enum)\n", node->get_name(), ((bx_param_enum_c*)node)->get_selected());
 220       break;
 221     case BXT_PARAM_STRING:
 222       if (((bx_param_string_c*)node)->get_options()->get() & bx_param_string_c::RAW_BYTES) {
 223         tmpstr[0] = 0;
 224         for (i = 0; i < ((bx_param_string_c*)node)->get_maxsize(); i++) {
 225           if (i > 0) {
 226             tmpbyte[0] = ((bx_param_string_c*)node)->get_separator();
 227             tmpbyte[1] = 0;
 228             strcat(tmpstr, tmpbyte);
 229           }
 230           sprintf(tmpbyte, "%02x", (Bit8u)((bx_param_string_c*)node)->getptr()[i]);
 231           strcat(tmpstr, tmpbyte);
 232         }
 233         dbg_printf("%s = '%s' (raw byte string)\n", node->get_name(), tmpstr);
 234       } else {
 235         dbg_printf("%s = '%s' (string)\n", node->get_name(), ((bx_param_string_c*)node)->getptr());
 236       }
 237       break;
 238     case BXT_LIST:
 239       {
 240         dbg_printf("%s = \n", node->get_name());
 241         bx_list_c *list = (bx_list_c*)node;
 242         for (i=0; i < list->get_size(); i++) {
 243            print_tree(list->get(i), level+1);
 244         }
 245         break;
 246       }
 247     case BXT_PARAM_DATA:
 248       dbg_printf("%s = 'size=%d' (binary data)\n", node->get_name(), ((bx_shadow_data_c*)node)->get_size());
 249       break;
 250     default:
 251       dbg_printf("%s (unknown parameter type)\n", node->get_name());
 252   }
 253 }
 254 #endif
 255
 256 int bxmain () {
 257 #ifdef HAVE_LOCALE_H
 258   // Initialize locale (for isprint() and other functions)
 259   setlocale (LC_ALL, "");
 260 #endif
 261   bx_user_quit = 0;
 262   bx_init_siminterface();   // create the SIM object
 263   static jmp_buf context;
 264   if (setjmp (context) == 0) {
 265     SIM->set_quit_context (&context);
 266     if (bx_init_main(bx_startup_flags.argc, bx_startup_flags.argv) < 0)
 267       return 0;
 268     // read a param to decide which config interface to start.
 269     // If one exists, start it.  If not, just begin.
 270     bx_param_enum_c *ci_param = SIM->get_param_enum(BXPN_SEL_CONFIG_INTERFACE);
 271     const char *ci_name = ci_param->get_selected();
 272     if (!strcmp(ci_name, "textconfig")) {
 273 #if BX_USE_TEXTCONFIG
 274       init_text_config_interface();   // in textconfig.h
 275 #else
 276       BX_PANIC(("configuration interface 'textconfig' not present"));
 277 #endif
 278     }
 279 #if BX_WITH_WX
 280     else if (!strcmp(ci_name, "wx")) {
 281       PLUG_load_plugin(wx, PLUGTYPE_CORE);
 282     }
 283 #endif
 284     else {
 285       BX_PANIC(("unsupported configuration interface '%s'", ci_name));
 286     }
 287     ci_param->set_enabled(0);
 288     int status = SIM->configuration_interface(ci_name, CI_START);
 289     if (status == CI_ERR_NO_TEXT_CONSOLE)
 290       BX_PANIC(("Bochs needed the text console, but it was not usable"));
 291     // user quit the config interface, so just quit
 292   } else {
 293     // quit via longjmp
 294   }
 295   SIM->set_quit_context(NULL);
 296 #if defined(WIN32)
 297   if (!bx_user_quit) {
 298     // ask user to press ENTER before exiting, so that they can read messages
 299     // before the console window is closed. This isn't necessary after pressing
 300     // the power button.
 301     fprintf(stderr, "\nBochs is exiting. Press ENTER when you're ready to close this window.\n");
 302     char buf[16];
 303     fgets(buf, sizeof(buf), stdin);
 304   }
 305 #endif
 306   return SIM->get_exit_code();
 307 }
 308
 309 #if defined(__WXMSW__)
 310
 311 // win32 applications get the whole command line in one long string.
 312 // This function is used to split up the string into argc and argv,
 313 // so that the command line can be used on win32 just like on every
 314 // other platform.
 315 //
 316 // I'm sure other people have written this same function, and they may have
 317 // done it better, but I don't know where to find it. -BBD
 318 #ifndef MAX_ARGLEN
 319 #define MAX_ARGLEN 80
 320 #endif
 321 int split_string_into_argv (
 322   char *string,
 323   int *argc_out,
 324   char **argv,
 325   int max_argv)
 326 {
 327   char *buf0 = new char[strlen(string)+1];
 328   strcpy (buf0, string);
 329   char *buf = buf0;
 330   int in_double_quote = 0, in_single_quote = 0;
 331   for (int i=0; i<max_argv; i++)
 332     argv[i] = NULL;
 333   argv[0] = new char[6];
 334   strcpy (argv[0], "bochs");
 335   int argc = 1;
 336   argv[argc] = new char[MAX_ARGLEN];
 337   char *outp = &argv[argc][0];
 338   // trim leading and trailing spaces
 339   while (*buf==' ') buf++;
 340   char *p;
 341   char *last_nonspace = buf;
 342   for (p=buf; *p; p++) {
 343     if (*p!=' ') last_nonspace = p;
 344   }
 345   if (last_nonspace != buf) *(last_nonspace+1) = 0;
 346   p = buf;
 347   bx_bool done = false;
 348   while (!done) {
 349     //fprintf (stderr, "parsing '%c' with singlequote=%d, dblquote=%d\n", *p, in_single_quote, in_double_quote);
 350     switch (*p) {
 351     case '\0':
 352       done = true;
 353       // fall through into behavior for space
 354     case ' ':
 355       if (in_double_quote || in_single_quote)
 356         goto do_default;
 357       *outp = 0;
 358       //fprintf (stderr, "completed arg %d = '%s'\n", argc, argv[argc]);
 359       argc++;
 360       if (argc >= max_argv) {
 361         fprintf (stderr, "too many arguments. Increase MAX_ARGUMENTS\n");
 362         return -1;
 363       }
 364       argv[argc] = new char[MAX_ARGLEN];
 365       outp = &argv[argc][0];
 366       while (*p==' ') p++;
 367       break;
 368     case '"':
 369       if (in_single_quote) goto do_default;
 370       in_double_quote = !in_double_quote;
 371       p++;
 372       break;
 373     case '\'':
 374       if (in_double_quote) goto do_default;
 375       in_single_quote = !in_single_quote;
 376       p++;
 377       break;
 378     do_default:
 379     default:
 380       if (outp-&argv[argc][0] >= MAX_ARGLEN) {
 381         //fprintf (stderr, "command line arg %d exceeded max size %d\n", argc, MAX_ARGLEN);
 382         return -1;
 383       }
 384       *(outp++) = *(p++);
 385     }
 386   }
 387   if (in_single_quote) {
 388     fprintf (stderr, "end of string with mismatched single quote (')\n");
 389     return -1;
 390   }
 391   if (in_double_quote) {
 392     fprintf (stderr, "end of string with mismatched double quote (\")\n");
 393     return -1;
 394   }
 395   *argc_out = argc;
 396   return 0;
 397 }
 398 #endif /* if defined(__WXMSW__) */
 399
 400 #if defined(__WXMSW__) || (BX_WITH_SDL && defined(WIN32))
 401 // The RedirectIOToConsole() function is copied from an article called "Adding
 402 // Console I/O to a Win32 GUI App" in Windows Developer Journal, December 1997.
 403 // It creates a console window.
 404 //
 405 // NOTE: It could probably be written so that it can safely be called for all
 406 // win32 builds.
 407 int RedirectIOToConsole()
 408 {
 409   int hConHandle;
 410   long lStdHandle;
 411   FILE *fp;
 412   // allocate a console for this app
 413   if (!AllocConsole()) {
 414     MessageBox(NULL, "Failed to create text console", "Error", MB_ICONERROR);
 415     return 0;
 416   }
 417   // redirect unbuffered STDOUT to the console
 418   lStdHandle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
 419   hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
 420   fp = _fdopen(hConHandle, "w");
 421   *stdout = *fp;
 422   setvbuf( stdout, NULL, _IONBF, 0 );
 423   // redirect unbuffered STDIN to the console
 424   lStdHandle = (long)GetStdHandle(STD_INPUT_HANDLE);
 425   hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
 426   fp = _fdopen(hConHandle, "r");
 427   *stdin = *fp;
 428   setvbuf( stdin, NULL, _IONBF, 0 );
 429   // redirect unbuffered STDERR to the console
 430   lStdHandle = (long)GetStdHandle(STD_ERROR_HANDLE);
 431   hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
 432   fp = _fdopen( hConHandle, "w" );
 433   *stderr = *fp;
 434   setvbuf(stderr, NULL, _IONBF, 0);
 435   return 1;
 436 }
 437 #endif  /* if defined(__WXMSW__) || (BX_WITH_SDL && defined(WIN32)) */
 438
 439 #if defined(__WXMSW__)
 440 // only used for wxWidgets/win32.
 441 // This works ok in Cygwin with a standard wxWidgets compile.  In
 442 // VC++ wxWidgets must be compiled with -DNOMAIN=1.
 443 int WINAPI WinMain(
 444   HINSTANCE hInstance,
 445   HINSTANCE hPrevInstance,
 446   LPSTR m_lpCmdLine, int nCmdShow)
 447 {
 448   bx_startup_flags.hInstance = hInstance;
 449   bx_startup_flags.hPrevInstance = hPrevInstance;
 450   bx_startup_flags.m_lpCmdLine = m_lpCmdLine;
 451   bx_startup_flags.nCmdShow = nCmdShow;
 452   if (!RedirectIOToConsole()) {
 453     return 1;
 454   }
 455   SetConsoleTitle("Bochs for Windows (wxWidgets port) - Console");
 456   int max_argv = 20;
 457   bx_startup_flags.argv = (char**) malloc (max_argv * sizeof (char*));
 458   split_string_into_argv(m_lpCmdLine, &bx_startup_flags.argc, bx_startup_flags.argv, max_argv);
 459   return bxmain();
 460 }
 461 #endif
 462
 463 #if !defined(__WXMSW__)
 464 // normal main function, presently in for all cases except for
 465 // wxWidgets under win32.
 466 int main (int argc, char *argv[])
 467 {
 468   bx_startup_flags.argc = argc;
 469   bx_startup_flags.argv = argv;
 470 #if BX_WITH_SDL && defined(WIN32)
 471   // if SDL/win32, try to create a console window.
 472   if (!RedirectIOToConsole()) {
 473     return 1;
 474   }
 475 #endif
 476 #if defined(WIN32)
 477   SetConsoleTitle("Bochs for Windows - Console");
 478 #endif
 479   return bxmain();
 480 }
 481 #endif
 482
 483 void print_usage()
 484 {
 485   fprintf(stderr,
 486     "Usage: bochs [flags] [bochsrc options]\n\n"
 487     "  -n               no configuration file\n"
 488     "  -f configfile    specify configuration file\n"
 489     "  -q               quick start (skip configuration interface)\n"
 490     "  -benchmark n     run bochs in benchmark mode for millions of emulated ticks\n"
 491     "  -r path          restore the Bochs state from path\n"
 492 #if BX_DEBUGGER
 493     "  -rc filename     execute debugger commands stored in file\n"
 494 #endif
 495     "  --help           display this help and exit\n\n"
 496     "For information on Bochs configuration file arguments, see the\n"
 497 #if (!defined(WIN32)) && !BX_WITH_MACOS
 498     "bochsrc section in the user documentation or the man page of bochsrc.\n");
 499 #else
 500     "bochsrc section in the user documentation.\n");
 501 #endif
 502 }
 503
 504 int bx_init_main(int argc, char *argv[])
 505 {
 506   // To deal with initialization order problems inherent in C++, use the macros
 507   // SAFE_GET_IOFUNC and SAFE_GET_GENLOG to retrieve "io" and "genlog" in all
 508   // constructors or functions called by constructors.  The macros test for
 509   // NULL and create the object if necessary, then return it.  Ensure that io
 510   // and genlog get created, by making one reference to each macro right here.
 511   // All other code can reference io and genlog directly.  Because these
 512   // objects are required for logging, and logging is so fundamental to
 513   // knowing what the program is doing, they are never free()d.
 514   SAFE_GET_IOFUNC();  // never freed
 515   SAFE_GET_GENLOG();  // never freed
 516
 517   // initalization must be done early because some destructors expect
 518   // the bochs config options to exist by the time they are called.
 519   bx_init_bx_dbg();
 520   bx_init_options();
 521
 522   bx_print_header();
 523
 524   SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_RUN_START);
 525
 526   // interpret the args that start with -, like -q, -f, etc.
 527   int arg = 1, load_rcfile=1;
 528   while (arg < argc) {
 529     // parse next arg
 530     if (!strcmp("--help", argv[arg]) || !strncmp("-h", argv[arg], 2)
 531 #if defined(WIN32)
 532         || !strncmp("/?", argv[arg], 2)
 533 #endif
 534        ) {
 535       print_usage();
 536       SIM->quit_sim(0);
 537     }
 538     else if (!strcmp("-n", argv[arg])) {
 539       load_rcfile = 0;
 540     }
 541     else if (!strcmp("-q", argv[arg])) {
 542       SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 543     }
 544     else if (!strcmp("-f", argv[arg])) {
 545       if (++arg >= argc) BX_PANIC(("-f must be followed by a filename"));
 546       else bochsrc_filename = argv[arg];
 547     }
 548     else if (!strcmp("-qf", argv[arg])) {
 549       SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 550       if (++arg >= argc) BX_PANIC(("-qf must be followed by a filename"));
 551       else bochsrc_filename = argv[arg];
 552     }
 553     else if (!strcmp("-benchmark", argv[arg])) {
 554       SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 555       if (++arg >= argc) BX_PANIC(("-benchmark must be followed by a number"));
 556       else SIM->get_param_num(BXPN_BOCHS_BENCHMARK)->set(atoi(argv[arg]));
 557     }
 558     else if (!strcmp("-r", argv[arg])) {
 559       if (++arg >= argc) BX_PANIC(("-r must be followed by a path"));
 560       else {
 561         SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 562         SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(1);
 563         SIM->get_param_string(BXPN_RESTORE_PATH)->set(argv[arg]);
 564       }
 565     }
 566 #if BX_WITH_CARBON
 567     else if (!strncmp("-psn", argv[arg], 4)) {
 568       // "-psn" is passed if we are launched by double-clicking
 569       // ugly hack.  I don't know how to open a window to print messages in,
 570       // so put them in /tmp/early-bochs-out.txt.  Sorry. -bbd
 571       io->init_log("/tmp/early-bochs-out.txt");
 572       BX_INFO (("I was launched by double clicking.  Fixing home directory."));
 573       arg = argc; // ignore all other args.
 574       setupWorkingDirectory (argv[0]);
 575       // there is no stdin/stdout so disable the text-based config interface.
 576       SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 577       char cwd[MAXPATHLEN];
 578       getwd (cwd);
 579       BX_INFO (("Now my working directory is %s", cwd));
 580       // if it was started from command line, there could be some args still.
 581       for (int a=0; a<argc; a++) {
 582         BX_INFO (("argument %d is %s", a, argv[a]));
 583       }
 584     }
 585 #endif
 586 #if BX_DEBUGGER
 587     else if (!strcmp("-rc", argv[arg])) {
 588       // process "-rc filename" option, if it exists
 589       if (++arg >= argc) BX_PANIC(("-rc must be followed by a filename"));
 590       else bx_dbg_set_rcfile(argv[arg]);
 591     }
 592 #endif
 593     else if (argv[arg][0] == '-') {
 594       print_usage();
 595       BX_PANIC (("command line arg '%s' was not understood", argv[arg]));
 596     }
 597     else {
 598       // the arg did not start with -, so stop interpreting flags
 599       break;
 600     }
 601     arg++;
 602   }
 603 #if BX_WITH_CARBON
 604   if(!getenv("BXSHARE"))
 605   {
 606     CFBundleRef mainBundle;
 607     CFURLRef bxshareDir;
 608     char bxshareDirPath[MAXPATHLEN];
 609     BX_INFO (("fixing default bxshare location ..."));
 610     // set bxshare to the directory that contains our application
 611     mainBundle = CFBundleGetMainBundle();
 612     BX_ASSERT(mainBundle != NULL);
 613     bxshareDir = CFBundleCopyBundleURL(mainBundle);
 614     BX_ASSERT(bxshareDir != NULL);
 615     // translate this to a unix style full path
 616     if(!CFURLGetFileSystemRepresentation(bxshareDir, true, (UInt8 *)bxshareDirPath, MAXPATHLEN))
 617     {
 618       BX_PANIC(("Unable to work out bxshare path! (Most likely path too long!)"));
 619       return -1;
 620     }
 621     char *c;
 622     c = (char*) bxshareDirPath;
 623     while (*c != '\0')  /* go to end */
 624       c++;
 625     while (*c != '/')   /* back up to parent */
 626       c--;
 627     *c = '\0';          /* cut off last part (binary name) */
 628     setenv("BXSHARE", bxshareDirPath, 1);
 629     BX_INFO (("now my BXSHARE is %s", getenv("BXSHARE")));
 630     CFRelease(bxshareDir);
 631   }
 632 #endif
 633 #if BX_PLUGINS
 634   // set a default plugin path, in case the user did not specify one
 635 #if BX_WITH_CARBON
 636   // if there is no stdin, then we must create our own LTDL_LIBRARY_PATH.
 637   // also if there is no LTDL_LIBRARY_PATH, but we have a bundle since we're here
 638   // This is here so that it is available whenever --with-carbon is defined but
 639   // the above code might be skipped, as in --with-sdl --with-carbon
 640   if(!isatty(STDIN_FILENO) || !getenv("LTDL_LIBRARY_PATH"))
 641   {
 642     CFBundleRef mainBundle;
 643     CFURLRef libDir;
 644     char libDirPath[MAXPATHLEN];
 645     if(!isatty(STDIN_FILENO))
 646     {
 647       // there is no stdin/stdout so disable the text-based config interface.
 648       SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
 649     }
 650     BX_INFO (("fixing default lib location ..."));
 651     // locate the lib directory within the application bundle.
 652     // our libs have been placed in bochs.app/Contents/(current platform aka MacOS)/lib
 653     // This isn't quite right, but they are platform specific and we haven't put
 654     // our plugins into true frameworks and bundles either
 655     mainBundle = CFBundleGetMainBundle();
 656     BX_ASSERT(mainBundle != NULL);
 657     libDir = CFBundleCopyAuxiliaryExecutableURL( mainBundle, CFSTR("lib"));
 658     BX_ASSERT(libDir != NULL);
 659     // translate this to a unix style full path
 660     if(!CFURLGetFileSystemRepresentation(libDir, true, (UInt8 *)libDirPath, MAXPATHLEN))
 661     {
 662       BX_PANIC(("Unable to work out ltdl library path within bochs bundle! (Most likely path too long!)"));
 663       return -1;
 664     }
 665     setenv("LTDL_LIBRARY_PATH", libDirPath, 1);
 666     BX_INFO (("now my LTDL_LIBRARY_PATH is %s", getenv("LTDL_LIBRARY_PATH")));
 667     CFRelease(libDir);
 668   }
 669 #elif BX_HAVE_GETENV && BX_HAVE_SETENV
 670   if (getenv("LTDL_LIBRARY_PATH") != NULL) {
 671     BX_INFO (("LTDL_LIBRARY_PATH is set to '%s'", getenv("LTDL_LIBRARY_PATH")));
 672   } else {
 673     BX_INFO (("LTDL_LIBRARY_PATH not set. using compile time default '%s'",
 674         BX_PLUGIN_PATH));
 675     setenv("LTDL_LIBRARY_PATH", BX_PLUGIN_PATH, 1);
 676   }
 677   if (getenv("BXSHARE") != NULL) {
 678     BX_INFO (("BXSHARE is set to '%s'", getenv("BXSHARE")));
 679   } else {
 680     BX_INFO (("BXSHARE not set. using compile time default '%s'",
 681         BX_SHARE_PATH));
 682     setenv("BXSHARE", BX_SHARE_PATH, 1);
 683   }
 684 #else
 685   // we don't have getenv or setenv.  Do nothing.
 686 #endif
 687 #endif  /* if BX_PLUGINS */
 688
 689   int norcfile = 1;
 690
 691   if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
 692     load_rcfile = 0;
 693     norcfile = 0;
 694   }
 695   if (load_rcfile) {
 696     /* parse configuration file and command line arguments */
 697 #ifdef WIN32
 698     int length;
 699     if (bochsrc_filename != NULL) {
 700       lstrcpy(bx_startup_flags.initial_dir, bochsrc_filename);
 701       length = lstrlen(bx_startup_flags.initial_dir);
 702       while ((length > 1) && (bx_startup_flags.initial_dir[length-1] != 92)) length--;
 703       bx_startup_flags.initial_dir[length] = 0;
 704     } else {
 705       bx_startup_flags.initial_dir[0] = 0;
 706     }
 707 #endif
 708     if (bochsrc_filename == NULL) bochsrc_filename = bx_find_bochsrc ();
 709     if (bochsrc_filename)
 710       norcfile = bx_read_configuration(bochsrc_filename);
 711   }
 712
 713   if (norcfile) {
 714     // No configuration was loaded, so the current settings are unusable.
 715     // Switch off quick start so that we will drop into the configuration
 716     // interface.
 717     if (SIM->get_param_enum(BXPN_BOCHS_START)->get() == BX_QUICK_START) {
 718       if (!SIM->test_for_text_console())
 719         BX_PANIC(("Unable to start Bochs without a bochsrc.txt and without a text console"));
 720       else
 721         BX_ERROR(("Switching off quick start, because no configuration file was found."));
 722     }
 723     SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_LOAD_START);
 724   }
 725
 726   if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
 727     if (arg < argc) {
 728       BX_ERROR(("WARNING: bochsrc options are ignored in restore mode!"));
 729     }
 730   }
 731   else {
 732     // parse the rest of the command line.  This is done after reading the
 733     // configuration file so that the command line arguments can override
 734     // the settings from the file.
 735     if (bx_parse_cmdline(arg, argc, argv)) {
 736       BX_PANIC(("There were errors while parsing the command line"));
 737       return -1;
 738     }
 739   }
 740   // initialize plugin system. This must happen before we attempt to
 741   // load any modules.
 742   plugin_startup();
 743   return 0;
 744 }
 745
 746 bx_bool load_and_init_display_lib()
 747 {
 748   if (bx_gui != NULL) {
 749     // bx_gui has already been filled in.  This happens when you start
 750     // the simulation for the second time.
 751     // Also, if you load wxWidgets as the configuration interface.  Its
 752     // plugin_init will install wxWidgets as the bx_gui.
 753     return true;
 754   }
 755   BX_ASSERT(bx_gui == NULL);
 756   bx_param_enum_c *ci_param = SIM->get_param_enum(BXPN_SEL_CONFIG_INTERFACE);
 757   const char *ci_name = ci_param->get_selected();
 758   bx_param_enum_c *gui_param = SIM->get_param_enum(BXPN_SEL_DISPLAY_LIBRARY);
 759   const char *gui_name = gui_param->get_selected();
 760   if (!strcmp(ci_name, "wx")) {
 761     BX_ERROR(("change of the config interface to wx not implemented yet"));
 762   }
 763   if (!strcmp(gui_name, "wx")) {
 764     // they must not have used wx as the configuration interface, or bx_gui
 765     // would already be initialized.  Sorry, it doesn't work that way.
 766     BX_ERROR(("wxWidgets was not used as the configuration interface, so it cannot be used as the display library"));
 767     // choose another, hopefully different!
 768     gui_param->set (0);
 769     gui_name = gui_param->get_selected();
 770     if (!strcmp (gui_name, "wx")) {
 771       BX_PANIC(("no alternative display libraries are available"));
 772       return false;
 773     }
 774     BX_ERROR(("changing display library to '%s' instead", gui_name));
 775   }
 776 #if BX_WITH_AMIGAOS
 777   if (!strcmp(gui_name, "amigaos"))
 778     PLUG_load_plugin (amigaos, PLUGTYPE_OPTIONAL);
 779 #endif
 780 #if BX_WITH_BEOS
 781   if (!strcmp(gui_name, "beos"))
 782     PLUG_load_plugin (beos, PLUGTYPE_OPTIONAL);
 783 #endif
 784 #if BX_WITH_CARBON
 785   if (!strcmp(gui_name, "carbon"))
 786     PLUG_load_plugin (carbon, PLUGTYPE_OPTIONAL);
 787 #endif
 788 #if BX_WITH_MACOS
 789   if (!strcmp(gui_name, "macos"))
 790     PLUG_load_plugin (macintosh, PLUGTYPE_OPTIONAL);
 791 #endif
 792 #if BX_WITH_NOGUI
 793   if (!strcmp(gui_name, "nogui"))
 794     PLUG_load_plugin (nogui, PLUGTYPE_OPTIONAL);
 795 #endif
 796 #if BX_WITH_RFB
 797   if (!strcmp(gui_name, "rfb"))
 798     PLUG_load_plugin (rfb, PLUGTYPE_OPTIONAL);
 799 #endif
 800 #if BX_WITH_SDL
 801   if (!strcmp(gui_name, "sdl"))
 802     PLUG_load_plugin (sdl, PLUGTYPE_OPTIONAL);
 803 #endif
 804 #if BX_WITH_SVGA
 805   if (!strcmp(gui_name, "svga"))
 806     PLUG_load_plugin (svga, PLUGTYPE_OPTIONAL);
 807 #endif
 808 #if BX_WITH_TERM
 809   if (!strcmp(gui_name, "term"))
 810     PLUG_load_plugin (term, PLUGTYPE_OPTIONAL);
 811 #endif
 812 #if BX_WITH_WIN32
 813   if (!strcmp(gui_name, "win32"))
 814     PLUG_load_plugin (win32, PLUGTYPE_OPTIONAL);
 815 #endif
 816 #if BX_WITH_X11
 817   if (!strcmp(gui_name, "x"))
 818     PLUG_load_plugin (x, PLUGTYPE_OPTIONAL);
 819 #endif
 820
 821 #if BX_GUI_SIGHANDLER
 822   // set the flag for guis requiring a GUI sighandler.
 823   // useful when guis are compiled as plugins
 824   // only term for now
 825   if (!strcmp(gui_name, "term")) {
 826     bx_gui_sighandler = 1;
 827   }
 828 #endif
 829
 830   BX_ASSERT(bx_gui != NULL);
 831   return true;
 832 }
 833
 834 int bx_begin_simulation (int argc, char *argv[])
 835 {
 836   SIM->init_save_restore();
 837   if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
 838     if (!SIM->restore_config()) {
 839       BX_PANIC(("cannot restore configuration"));
 840       SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
 841     }
 842   }
 843
 844   // deal with gui selection
 845   if (!load_and_init_display_lib ()) {
 846     BX_PANIC (("no gui module was loaded"));
 847     return 0;
 848   }
 849
 850   bx_cpu_count = SIM->get_param_num(BXPN_CPU_NPROCESSORS)->get() *
 851                  SIM->get_param_num(BXPN_CPU_NCORES)->get() *
 852                  SIM->get_param_num(BXPN_CPU_NTHREADS)->get();
 853
 854   BX_ASSERT(bx_cpu_count <= BX_MAX_SMP_THREADS_SUPPORTED);
 855   BX_ASSERT(bx_cpu_count >  0);
 856
 857   bx_init_hardware();
 858
 859   if (SIM->get_param_enum(BXPN_LOAD32BITOS_WHICH)->get()) {
 860     void bx_load32bitOSimagehack(void);
 861     bx_load32bitOSimagehack();
 862   }
 863
 864   SIM->set_init_done(1);
 865
 866   // update headerbar buttons since drive status can change during init
 867   bx_gui->update_drive_status_buttons();
 868
 869   // iniialize statusbar and set all items inactive
 870   if (!SIM->get_param_bool(BXPN_RESTORE_FLAG)->get())
 871   {
 872     bx_gui->statusbar_setitem(-1, 0);
 873   }
 874
 875   // The set handler for mouse_enabled does not actually update the gui
 876   // until init_done is set.  This forces the set handler to be called,
 877   // which sets up the mouse enabled GUI-specific stuff correctly.
 878   // Not a great solution but it works. BBD
 879   SIM->get_param_bool(BXPN_MOUSE_ENABLED)->set(SIM->get_param_bool(BXPN_MOUSE_ENABLED)->get());
 880
 881 #if BX_DEBUGGER
 882   // If using the debugger, it will take control and call
 883   // bx_init_hardware() and cpu_loop()
 884   bx_dbg_main();
 885 #else
 886 #if BX_GDBSTUB
 887   // If using gdbstub, it will take control and call
 888   // bx_init_hardware() and cpu_loop()
 889   if (bx_dbg.gdbstub_enabled) bx_gdbstub_init();
 890   else
 891 #endif
 892   {
 893     if (BX_SMP_PROCESSORS == 1) {
 894       // only one processor, run as fast as possible by not messing with
 895       // quantums and loops.
 896       while (1) {
 897         BX_CPU(0)->cpu_loop(0);
 898         if (bx_pc_system.kill_bochs_request)
 899           break;
 900       }
 901       // for one processor, the only reason for cpu_loop to return is
 902       // that kill_bochs_request was set by the GUI interface.
 903     }
 904     else {
 905       // SMP simulation: do a few instructions on each processor, then switch
 906       // to another.  Increasing quantum speeds up overall performance, but
 907       // reduces granularity of synchronization between processors.
 908       int processor = 0;
 909       int quantum = SIM->get_param_num(BXPN_SMP_QUANTUM)->get();
 910       while (1) {
 911         // do some instructions in each processor
 912         BX_CPU(processor)->cpu_loop(quantum);
 913         processor = (processor+1) % BX_SMP_PROCESSORS;
 914         if (bx_pc_system.kill_bochs_request)
 915           break;
 916         if (processor == 0)
 917           BX_TICKN(quantum);
 918       }
 919     }
 920   }
 921 #endif /* BX_DEBUGGER == 0 */
 922   BX_INFO(("cpu loop quit, shutting down simulator"));
 923   bx_atexit();
 924   return(0);
 925 }
 926
 927 void bx_stop_simulation()
 928 {
 929   // in wxWidgets, the whole simulator is running in a separate thread.
 930   // our only job is to end the thread as soon as possible, NOT to shut
 931   // down the whole application with an exit.
 932   BX_CPU(0)->async_event = 1;
 933   bx_pc_system.kill_bochs_request = 1;
 934   // the cpu loop will exit very soon after this condition is set.
 935 }
 936
 937 void bx_sr_after_restore_state(void)
 938 {
 939 #if BX_SUPPORT_SMP == 0
 940   BX_CPU(0)->after_restore_state();
 941 #else
 942   for (unsigned i=0; i<BX_SMP_PROCESSORS; i++) {
 943     BX_CPU(i)->after_restore_state();
 944   }
 945 #endif
 946   DEV_after_restore_state();
 947 }
 948
 949 void bx_init_hardware()
 950 {
 951   // all configuration has been read, now initialize everything.
 952
 953   if (SIM->get_param_enum(BXPN_BOCHS_START)->get()==BX_QUICK_START) {
 954     for (int level=0; level<N_LOGLEV; level++) {
 955       int action = SIM->get_default_log_action(level);
 956       io->set_log_action(level, action);
 957     }
 958   }
 959
 960   bx_pc_system.initialize(SIM->get_param_num(BXPN_IPS)->get());
 961
 962   if (SIM->get_param_string(BXPN_LOG_FILENAME)->getptr()[0]!='-') {
 963     BX_INFO (("using log file %s", SIM->get_param_string(BXPN_LOG_FILENAME)->getptr()));
 964     io->init_log(SIM->get_param_string(BXPN_LOG_FILENAME)->getptr());
 965   }
 966
 967   io->set_log_prefix(SIM->get_param_string(BXPN_LOG_PREFIX)->getptr());
 968
 969   // Output to the log file the cpu and device settings
 970   // This will by handy for bug reports
 971   BX_INFO(("Bochs x86 Emulator %s", VER_STRING));
 972   BX_INFO(("  %s", REL_STRING));
 973   BX_INFO(("System configuration"));
 974   BX_INFO(("  processors: %d (cores=%u, HT threads=%u)", BX_SMP_PROCESSORS,
 975     SIM->get_param_num(BXPN_CPU_NCORES)->get(), SIM->get_param_num(BXPN_CPU_NTHREADS)->get()));
 976   BX_INFO(("  A20 line support: %s",BX_SUPPORT_A20?"yes":"no"));
 977   BX_INFO(("  APIC support: %s",BX_SUPPORT_APIC?"yes":"no"));
 978   BX_INFO(("CPU configuration"));
 979   BX_INFO(("  level: %d",BX_CPU_LEVEL));
 980   BX_INFO(("  TLB enabled: %s",BX_USE_TLB?"yes":"no"));
 981 #if BX_SUPPORT_SMP
 982   BX_INFO(("  SMP support: yes, quantum=%d", SIM->get_param_num(BXPN_SMP_QUANTUM)->get()));
 983 #else
 984   BX_INFO(("  SMP support: no"));
 985 #endif
 986   BX_INFO(("  FPU support: %s",BX_SUPPORT_FPU?"yes":"no"));
 987   BX_INFO(("  MMX support: %s",BX_SUPPORT_MMX?"yes":"no"));
 988   if (BX_SUPPORT_SSE == 0)
 989     BX_INFO(("  SSE support: no"));
 990   else
 991     BX_INFO(("  SSE support: %d",BX_SUPPORT_SSE));
 992   BX_INFO(("  CLFLUSH support: %s",BX_SUPPORT_CLFLUSH?"yes":"no"));
 993   BX_INFO(("  v8086 mode support: %s",BX_SUPPORT_V8086_MODE?"yes":"no"));
 994   BX_INFO(("  VME support: %s",BX_SUPPORT_VME?"yes":"no"));
 995   BX_INFO(("  3dnow! support: %s",BX_SUPPORT_3DNOW?"yes":"no"));
 996   BX_INFO(("  PAE support: %s",BX_SUPPORT_PAE?"yes":"no"));
 997   BX_INFO(("  PGE support: %s",BX_SUPPORT_GLOBAL_PAGES?"yes":"no"));
 998   BX_INFO(("  PSE support: %s",BX_SUPPORT_LARGE_PAGES?"yes":"no"));
 999   BX_INFO(("  x86-64 support: %s",BX_SUPPORT_X86_64?"yes":"no"));
1000   BX_INFO(("  SEP support: %s",BX_SUPPORT_SEP?"yes":"no"));
1001   BX_INFO(("  MWAIT support: %s",BX_SUPPORT_MONITOR_MWAIT?"yes":"no"));
1002   BX_INFO(("Optimization configuration"));
1003   BX_INFO(("  Guest2HostTLB support: %s",BX_SupportGuest2HostTLB?"yes":"no"));
1004   BX_INFO(("  RepeatSpeedups support: %s",BX_SupportRepeatSpeedups?"yes":"no"));
1005   BX_INFO(("  Icache support: %s",BX_SUPPORT_ICACHE?"yes":"no"));
1006   BX_INFO(("  Fast function calls: %s",BX_FAST_FUNC_CALL?"yes":"no"));
1007   BX_INFO(("Devices configuration"));
1008   BX_INFO(("  ACPI support: %s",BX_SUPPORT_ACPI?"yes":"no"));
1009   BX_INFO(("  NE2000 support: %s",BX_SUPPORT_NE2K?"yes":"no"));
1010   BX_INFO(("  PCI support: %s",BX_SUPPORT_PCI?"yes":"no"));
1011   BX_INFO(("  SB16 support: %s",BX_SUPPORT_SB16?"yes":"no"));
1012   BX_INFO(("  USB support: %s",BX_SUPPORT_PCIUSB?"yes":"no"));
1013   BX_INFO(("  VGA extension support: %s %s",BX_SUPPORT_VBE?"vbe":"",
1014            BX_SUPPORT_CLGD54XX?"cirrus":""));
1015
1016   // Check if there is a romimage
1017   if (strcmp(SIM->get_param_string(BXPN_ROM_PATH)->getptr(),"") == 0) {
1018     BX_ERROR(("No romimage to load. Is your bochsrc file loaded/valid ?"));
1019   }
1020
1021   // set one shot timer for benchmark mode if needed, the timer will fire
1022   // once and kill Bochs simulation after predefined amount of emulated
1023   // ticks
1024   int benchmark_mode = SIM->get_param_num(BXPN_BOCHS_BENCHMARK)->get();
1025   if (benchmark_mode) {
1026     BX_INFO(("Bochs benchmark mode is ON (~%d millions of ticks)", benchmark_mode));
1027     bx_pc_system.register_timer_ticks(&bx_pc_system, bx_pc_system_c::benchmarkTimer,
1028         (Bit64u) benchmark_mode * 1000000, 0, 1, "benchmark.timer");
1029   }
1030
1031   // set up memory and CPU objects
1032   bx_param_num_c *bxp_memsize = SIM->get_param_num(BXPN_MEM_SIZE);
1033   Bit32u memSize = bxp_memsize->get() * 1024*1024;
1034
1035 #if BX_SUPPORT_ICACHE
1036   pageWriteStampTable.alloc(memSize);
1037 #endif
1038
1039   BX_MEM(0)->init_memory(memSize);
1040
1041   // First load the BIOS and VGABIOS
1042   BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_ROM_PATH)->getptr(),
1043                       SIM->get_param_num(BXPN_ROM_ADDRESS)->get(), 0);
1044   BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_VGA_ROM_PATH)->getptr(), 0xc0000, 1);
1045
1046   // Then load the optional ROM images
1047   if (strcmp(SIM->get_param_string(BXPN_OPTROM1_PATH)->getptr(), "") !=0)
1048     BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM1_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM1_ADDRESS)->get(), 2);
1049   if (strcmp(SIM->get_param_string(BXPN_OPTROM2_PATH)->getptr(), "") !=0)
1050     BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM2_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM2_ADDRESS)->get(), 2);
1051   if (strcmp(SIM->get_param_string(BXPN_OPTROM3_PATH)->getptr(), "") !=0)
1052     BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM3_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM3_ADDRESS)->get(), 2);
1053   if (strcmp(SIM->get_param_string(BXPN_OPTROM4_PATH)->getptr(), "") !=0)
1054     BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM4_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM4_ADDRESS)->get(), 2);
1055
1056   // Then load the optional RAM images
1057   if (strcmp(SIM->get_param_string(BXPN_OPTRAM1_PATH)->getptr(), "") !=0)
1058     BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM1_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM1_ADDRESS)->get(), 2);
1059   if (strcmp(SIM->get_param_string(BXPN_OPTRAM2_PATH)->getptr(), "") !=0)
1060     BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM2_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM2_ADDRESS)->get(), 2);
1061   if (strcmp(SIM->get_param_string(BXPN_OPTRAM3_PATH)->getptr(), "") !=0)
1062     BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM3_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM3_ADDRESS)->get(), 2);
1063   if (strcmp(SIM->get_param_string(BXPN_OPTRAM4_PATH)->getptr(), "") !=0)
1064     BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM4_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM4_ADDRESS)->get(), 2);
1065
1066 #if BX_SUPPORT_SMP == 0
1067   BX_CPU(0)->initialize(BX_MEM(0));
1068   BX_CPU(0)->sanity_checks();
1069   BX_CPU(0)->register_state();
1070   BX_INSTR_INIT(0);
1071 #else
1072   bx_cpu_array = new BX_CPU_C_PTR[BX_SMP_PROCESSORS];
1073
1074   for (unsigned i=0; i<BX_SMP_PROCESSORS; i++) {
1075     BX_CPU(i) = new BX_CPU_C(i);
1076     BX_CPU(i)->initialize(BX_MEM(0));  // assign local apic id in 'initialize' method
1077     BX_CPU(i)->sanity_checks();
1078     BX_CPU(i)->register_state();
1079     BX_INSTR_INIT(i);
1080   }
1081 #endif
1082
1083   DEV_init_devices();
1084   bx_pc_system.register_state();
1085   DEV_register_state();
1086   if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
1087     if (!SIM->restore_logopts()) {
1088       BX_PANIC(("cannot restore log options"));
1089       SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
1090     }
1091   }
1092
1093   // will enable A20 line and reset CPU and devices
1094   bx_pc_system.Reset(BX_RESET_HARDWARE);
1095
1096   if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
1097     if (SIM->restore_hardware()) {
1098       bx_sr_after_restore_state();
1099     } else {
1100       BX_PANIC(("cannot restore hardware state"));
1101       SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
1102     }
1103   }
1104
1105   bx_gui->init_signal_handlers();
1106   bx_pc_system.start_timers();
1107
1108   BX_DEBUG(("bx_init_hardware is setting signal handlers"));
1109 // if not using debugger, then we can take control of SIGINT.
1110 #if !BX_DEBUGGER
1111   signal(SIGINT, bx_signal_handler);
1112 #endif
1113
1114 #if BX_SHOW_IPS
1115 #if !defined(__MINGW32__) && !defined(_MSC_VER)
1116   signal(SIGALRM, bx_signal_handler);
1117 #endif
1118   alarm( 1 );
1119 #endif
1120 }
1121
1122 void bx_init_bx_dbg(void)
1123 {
1124 #if BX_DEBUGGER
1125   bx_dbg_init_infile();
1126 #endif
1127   bx_dbg.floppy = 0;
1128   bx_dbg.keyboard = 0;
1129   bx_dbg.video = 0;
1130   bx_dbg.disk = 0;
1131   bx_dbg.pit = 0;
1132   bx_dbg.pic = 0;
1133   bx_dbg.bios = 0;
1134   bx_dbg.cmos = 0;
1135   bx_dbg.a20 = 0;
1136   bx_dbg.interrupts = 0;
1137   bx_dbg.exceptions = 0;
1138   bx_dbg.unsupported = 0;
1139   bx_dbg.temp = 0;
1140   bx_dbg.reset = 0;
1141   bx_dbg.mouse = 0;
1142   bx_dbg.io = 0;
1143   bx_dbg.debugger = 0;
1144   bx_dbg.xms = 0;
1145   bx_dbg.v8086 = 0;
1146   bx_dbg.paging = 0;
1147   bx_dbg.creg = 0;
1148   bx_dbg.dreg = 0;
1149   bx_dbg.dma = 0;
1150   bx_dbg.unsupported_io = 0;
1151   bx_dbg.record_io = 0;
1152   bx_dbg.serial = 0;
1153   bx_dbg.cdrom = 0;
1154 #if BX_MAGIC_BREAKPOINT
1155   bx_dbg.magic_break_enabled = 0;
1156 #endif
1157 #if BX_GDBSTUB
1158   bx_dbg.gdbstub_enabled = 0;
1159 #endif
1160 }
1161
1162 int bx_atexit(void)
1163 {
1164   if (!SIM->get_init_done()) return 1; // protect from reentry
1165
1166   // in case we ended up in simulation mode, change back to config mode
1167   // so that the user can see any messages left behind on the console.
1168   SIM->set_display_mode(DISP_MODE_CONFIG);
1169
1170 #if BX_DEBUGGER == 0
1171   if (SIM && SIM->get_init_done()) {
1172     for (int cpu=0; cpu<BX_SMP_PROCESSORS; cpu++)
1173 #if BX_SUPPORT_SMP
1174       if (BX_CPU(cpu))
1175 #endif
1176         BX_CPU(cpu)->atexit();
1177   }
1178 #endif
1179
1180   BX_MEM(0)->cleanup_memory();
1181
1182 #if BX_PROVIDE_DEVICE_MODELS==1
1183   bx_pc_system.exit();
1184 #endif
1185
1186   // restore signal handling to defaults
1187 #if !BX_DEBUGGER
1188   BX_INFO(("restoring default signal behavior"));
1189   signal(SIGINT, SIG_DFL);
1190 #endif
1191
1192 #if BX_SHOW_IPS
1193 #ifndef __MINGW32__
1194   signal(SIGALRM, SIG_DFL);
1195 #endif
1196 #endif
1197
1198   SIM->set_init_done(0);
1199
1200   return 0;
1201 }
1202
1203 void bx_signal_handler(int signum)
1204 {
1205   // in a multithreaded environment, a signal such as SIGINT can be sent to all
1206   // threads.  This function is only intended to handle signals in the
1207   // simulator thread.  It will simply return if called from any other thread.
1208   // Otherwise the BX_PANIC() below can be called in multiple threads at
1209   // once, leading to multiple threads trying to display a dialog box,
1210   // leading to GUI deadlock.
1211   if (!SIM->is_sim_thread()) {
1212     BX_INFO (("bx_signal_handler: ignored sig %d because it wasn't called from the simulator thread", signum));
1213     return;
1214   }
1215 #if BX_GUI_SIGHANDLER
1216   if (bx_gui_sighandler) {
1217     // GUI signal handler gets first priority, if the mask says it's wanted
1218     if ((1<<signum) & bx_gui->get_sighandler_mask()) {
1219       bx_gui->sighandler(signum);
1220       return;
1221     }
1222   }
1223 #endif
1224
1225 #if BX_SHOW_IPS
1226   static Bit64u ticks_count = 0;
1227
1228   if (signum == SIGALRM)
1229   {
1230     // amount of system ticks passed from last time the handler was called
1231     Bit64u ips_count = bx_pc_system.time_ticks() - ticks_count;
1232     if (ips_count) {
1233       bx_gui->show_ips((Bit32u) ips_count);
1234       ticks_count = bx_pc_system.time_ticks();
1235     }
1236 #if !defined(__MINGW32__) && !defined(_MSC_VER)
1237     signal(SIGALRM, bx_signal_handler);
1238     alarm( 1 );
1239 #endif
1240     return;
1241   }
1242 #endif
1243
1244 #if BX_GUI_SIGHANDLER
1245   if (bx_gui_sighandler) {
1246     if ((1<<signum) & bx_gui->get_sighandler_mask ()) {
1247       bx_gui->sighandler(signum);
1248       return;
1249     }
1250   }
1251 #endif
1252
1253   BX_PANIC(("SIGNAL %u caught", signum));
1254 }