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Bochs/bochs/main.cc

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/////////////////////////////////////////////////////////////////////////
// $Id: main.cc,v 1.286 2005-03-16 16:36:31 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "bochs.h"
#include "iodev/iodev.h"
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#if BX_WITH_SDL
// since SDL redefines main() to SDL_main(), we must include SDL.h so that the
// C language prototype is found. Otherwise SDL_main() will get its name
// mangled and not match what the SDL library is expecting.
#include <SDL.h>
#if defined(macintosh)
// Work around a bug in SDL 1.2.4 on MacOS X, which redefines getenv to
// SDL_getenv, but then neglects to provide SDL_getenv. It happens
// because we are defining -Dmacintosh.
#undef getenv
#endif
#endif
#if BX_WITH_CARBON
#define Float32 KLUDGE_Float32
#define Float64 KLUDGE_Float64
#include <Carbon/Carbon.h>
#undef Float32
#undef Float64
#endif
// BX_SHARE_PATH should be defined by the makefile. If not, give it
// a value of NULL to avoid compile problems.
#ifndef BX_SHARE_PATH
#define BX_SHARE_PATH NULL
#endif
extern "C" {
#include <signal.h>
}
#ifdef __MINGW32__
void alarm(int);
#endif
#if BX_GUI_SIGHANDLER
bx_bool bx_gui_sighandler = 0;
#endif
#if BX_PROVIDE_DEVICE_MODELS==1
// some prototypes from iodev/
// I want to stay away from including iodev/iodev.h here
Bit32u bx_unmapped_io_read_handler(Bit32u address, unsigned io_len);
void bx_unmapped_io_write_handler(Bit32u address, Bit32u value,
unsigned io_len);
void bx_close_harddrive(void);
#endif
void bx_init_bx_dbg (void);
static char *divider = "========================================================================";
static logfunctions thePluginLog;
logfunctions *pluginlog = &thePluginLog;
bx_startup_flags_t bx_startup_flags;
bx_bool bx_user_quit;
/* typedefs */
#define LOG_THIS genlog->
#if ( BX_PROVIDE_DEVICE_MODELS==1 )
bx_pc_system_c bx_pc_system;
#endif
bx_debug_t bx_dbg;
char *bochsrc_filename = NULL;
void bx_print_header ()
{
fprintf (stderr, "%s\n", divider);
char buffer[128];
sprintf (buffer, "Bochs x86 Emulator %s\n", VER_STRING);
bx_center_print (stderr, buffer, 72);
if (REL_STRING[0]) {
sprintf (buffer, "%s\n", REL_STRING);
bx_center_print (stderr, buffer, 72);
}
fprintf (stderr, "%s\n", divider);
}
#if BX_WITH_CARBON
/* Original code by Darrell Walisser - dwaliss1@purdue.edu */
static void setupWorkingDirectory (char *path)
{
char parentdir[MAXPATHLEN];
char *c;
strncpy ( parentdir, path, MAXPATHLEN );
c = (char*) parentdir;
while (*c != '\0') /* go to end */
c++;
while (*c != '/') /* back up to parent */
c--;
*c = '\0'; /* cut off last part (binary name) */
/* chdir to the binary app's parent */
int n;
n = chdir (parentdir);
if (n) BX_PANIC (("failed to change dir to parent"));
/* chdir to the .app's parent */
n = chdir ("../../../");
if (n) BX_PANIC (("failed to change to ../../.."));
}
/* Panic button to display fatal errors.
Completely self contained, can't rely on carbon.cc being available */
static void carbonFatalDialog(const char *error, const char *exposition)
{
DialogRef alertDialog;
CFStringRef cfError;
CFStringRef cfExposition;
DialogItemIndex index;
AlertStdCFStringAlertParamRec alertParam = {0};
fprintf(stderr, "Entering carbonFatalDialog: %s\n", error);
// Init libraries
InitCursor();
// Assemble dialog
cfError = CFStringCreateWithCString(NULL, error, kCFStringEncodingASCII);
if(exposition != NULL)
{
cfExposition = CFStringCreateWithCString(NULL, exposition, kCFStringEncodingASCII);
}
else { cfExposition = NULL; }
alertParam.version = kStdCFStringAlertVersionOne;
alertParam.defaultText = CFSTR("Quit");
alertParam.position = kWindowDefaultPosition;
alertParam.defaultButton = kAlertStdAlertOKButton;
// Display Dialog
CreateStandardAlert(
kAlertStopAlert,
cfError,
cfExposition, /* can be NULL */
&alertParam, /* can be NULL */
&alertDialog);
RunStandardAlert( alertDialog, NULL, &index);
// Cleanup
CFRelease( cfError );
if( cfExposition != NULL ) { CFRelease( cfExposition ); }
}
#endif
int bxmain () {
#ifdef HAVE_LOCALE_H
// Initialize locale (for isprint() and other functions)
setlocale (LC_ALL, "");
#endif
bx_user_quit = 0;
bx_init_siminterface (); // create the SIM object
static jmp_buf context;
if (setjmp (context) == 0) {
SIM->set_quit_context (&context);
if (bx_init_main (bx_startup_flags.argc, bx_startup_flags.argv) < 0)
return 0;
// read a param to decide which config interface to start.
// If one exists, start it. If not, just begin.
bx_param_enum_c *ci_param = SIM->get_param_enum (BXP_SEL_CONFIG_INTERFACE);
char *ci_name = ci_param->get_choice (ci_param->get ());
if (!strcmp(ci_name, "textconfig")) {
#if BX_USE_TEXTCONFIG
init_text_config_interface (); // in textconfig.h
#else
BX_PANIC(("configuration interface 'textconfig' not present"));
#endif
}
#if BX_WITH_WX
else if (!strcmp(ci_name, "wx")) {
PLUG_load_plugin(wx, PLUGTYPE_CORE);
}
#endif
else {
BX_PANIC (("unsupported configuration interface '%s'", ci_name));
}
int status = SIM->configuration_interface (ci_name, CI_START);
if (status == CI_ERR_NO_TEXT_CONSOLE)
BX_PANIC (("Bochs needed the text console, but it was not usable"));
// user quit the config interface, so just quit
} else {
// quit via longjmp
}
SIM->set_quit_context (NULL);
#if defined(WIN32)
if (!bx_user_quit) {
// ask user to press ENTER before exiting, so that they can read messages
// before the console window is closed. This isn't necessary after pressing
// the power button.
fprintf (stderr, "\nBochs is exiting. Press ENTER when you're ready to close this window.\n");
char buf[16];
fgets (buf, sizeof(buf), stdin);
}
#endif
return SIM->get_exit_code ();
}
#if defined(__WXMSW__)
// win32 applications get the whole command line in one long string.
// This function is used to split up the string into argc and argv,
// so that the command line can be used on win32 just like on every
// other platform.
//
// I'm sure other people have written this same function, and they may have
// done it better, but I don't know where to find it. -BBD
#ifndef MAX_ARGLEN
#define MAX_ARGLEN 80
#endif
int split_string_into_argv (
char *string,
int *argc_out,
char **argv,
int max_argv)
{
char *buf0 = new char[strlen(string)+1];
strcpy (buf0, string);
char *buf = buf0;
int in_double_quote = 0, in_single_quote = 0;
for (int i=0; i<max_argv; i++)
argv[i] = NULL;
argv[0] = new char[6];
strcpy (argv[0], "bochs");
int argc = 1;
argv[argc] = new char[MAX_ARGLEN];
char *outp = &argv[argc][0];
// trim leading and trailing spaces
while (*buf==' ') buf++;
char *p;
char *last_nonspace = buf;
for (p=buf; *p; p++) {
if (*p!=' ') last_nonspace = p;
}
if (last_nonspace != buf) *(last_nonspace+1) = 0;
p = buf;
bx_bool done = false;
while (!done) {
//fprintf (stderr, "parsing '%c' with singlequote=%d, dblquote=%d\n", *p, in_single_quote, in_double_quote);
switch (*p) {
case '\0':
done = true;
// fall through into behavior for space
case ' ':
if (in_double_quote || in_single_quote)
goto do_default;
*outp = 0;
//fprintf (stderr, "completed arg %d = '%s'\n", argc, argv[argc]);
argc++;
if (argc >= max_argv) {
fprintf (stderr, "too many arguments. Increase MAX_ARGUMENTS\n");
return -1;
}
argv[argc] = new char[MAX_ARGLEN];
outp = &argv[argc][0];
while (*p==' ') p++;
break;
case '"':
if (in_single_quote) goto do_default;
in_double_quote = !in_double_quote;
p++;
break;
case '\'':
if (in_double_quote) goto do_default;
in_single_quote = !in_single_quote;
p++;
break;
do_default:
default:
if (outp-&argv[argc][0] >= MAX_ARGLEN) {
//fprintf (stderr, "command line arg %d exceeded max size %d\n", argc, MAX_ARGLEN);
return -1;
}
*(outp++) = *(p++);
}
}
if (in_single_quote) {
fprintf (stderr, "end of string with mismatched single quote (')\n");
return -1;
}
if (in_double_quote) {
fprintf (stderr, "end of string with mismatched double quote (\")\n");
return -1;
}
*argc_out = argc;
return 0;
}
#endif /* if defined(__WXMSW__) */
#if defined(__WXMSW__) || (BX_WITH_SDL && defined(WIN32))
// The RedirectIOToConsole() function is copied from an article called "Adding
// Console I/O to a Win32 GUI App" in Windows Developer Journal, December 1997.
// It creates a console window.
//
// NOTE: It could probably be written so that it can safely be called for all
// win32 builds. Right now it appears to have absolutely no error checking:
// for example if AllocConsole returns false we should probably return early.
void RedirectIOToConsole ()
{
int hConHandle;
long lStdHandle;
FILE *fp;
// allocate a console for this app
AllocConsole();
// redirect unbuffered STDOUT to the console
lStdHandle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
fp = _fdopen( hConHandle, "w" );
*stdout = *fp;
setvbuf( stdout, NULL, _IONBF, 0 );
// redirect unbuffered STDIN to the console
lStdHandle = (long)GetStdHandle(STD_INPUT_HANDLE);
hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
fp = _fdopen( hConHandle, "r" );
*stdin = *fp;
setvbuf( stdin, NULL, _IONBF, 0 );
// redirect unbuffered STDERR to the console
lStdHandle = (long)GetStdHandle(STD_ERROR_HANDLE);
hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);
fp = _fdopen( hConHandle, "w" );
*stderr = *fp;
setvbuf( stderr, NULL, _IONBF, 0 );
}
#endif /* if defined(__WXMSW__) || (BX_WITH_SDL && defined(WIN32)) */
#if defined(__WXMSW__)
// only used for wxWidgets/win32.
// This works ok in Cygwin with a standard wxWidgets compile. In
// VC++ wxWidgets must be compiled with -DNOMAIN=1.
int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR m_lpCmdLine, int nCmdShow)
{
bx_startup_flags.hInstance = hInstance;
bx_startup_flags.hPrevInstance = hPrevInstance;
bx_startup_flags.m_lpCmdLine = m_lpCmdLine;
bx_startup_flags.nCmdShow = nCmdShow;
RedirectIOToConsole ();
int max_argv = 20;
bx_startup_flags.argv = (char**) malloc (max_argv * sizeof (char*));
split_string_into_argv (m_lpCmdLine, &bx_startup_flags.argc, bx_startup_flags.argv, max_argv);
return bxmain ();
}
#endif
#if !defined(__WXMSW__)
// normal main function, presently in for all cases except for
// wxWidgets under win32.
int main (int argc, char *argv[])
{
bx_startup_flags.argc = argc;
bx_startup_flags.argv = argv;
#if BX_WITH_SDL && defined(WIN32)
// if SDL/win32, try to create a console window.
RedirectIOToConsole ();
#endif
return bxmain ();
}
#endif
void
print_usage ()
{
fprintf(stderr,
"Usage: bochs [flags] [bochsrc options]\n\n"
" -n no configuration file\n"
" -f configfile specify configuration file\n"
" -q quick start (skip configuration interface)\n"
" --help display this help and exit\n\n"
"For information on Bochs configuration file arguments, see the\n"
#if (!defined(WIN32)) && !BX_WITH_MACOS
"bochsrc section in the user documentation or the man page of bochsrc.\n");
#else
"bochsrc section in the user documentation.\n");
#endif
}
int
bx_init_main (int argc, char *argv[])
{
// To deal with initialization order problems inherent in C++, use the macros
// SAFE_GET_IOFUNC and SAFE_GET_GENLOG to retrieve "io" and "genlog" in all
// constructors or functions called by constructors. The macros test for
// NULL and create the object if necessary, then return it. Ensure that io
// and genlog get created, by making one reference to each macro right here.
// All other code can reference io and genlog directly. Because these
// objects are required for logging, and logging is so fundamental to
// knowing what the program is doing, they are never free()d.
SAFE_GET_IOFUNC(); // never freed
SAFE_GET_GENLOG(); // never freed
// initalization must be done early because some destructors expect
// the bx_options to exist by the time they are called.
bx_init_bx_dbg ();
bx_init_options ();
bx_print_header ();
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_RUN_START);
// interpret the args that start with -, like -q, -f, etc.
int arg = 1, load_rcfile=1;
while (arg < argc) {
// parse next arg
if (!strcmp ("--help", argv[arg]) || !strncmp ("-h", argv[arg], 2)) {
print_usage();
SIM->quit_sim (0);
}
else if (!strcmp ("-n", argv[arg])) {
load_rcfile = 0;
}
else if (!strcmp ("-q", argv[arg])) {
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
}
else if (!strcmp ("-f", argv[arg])) {
if (++arg >= argc) BX_PANIC(("-f must be followed by a filename"));
else bochsrc_filename = argv[arg];
}
else if (!strcmp ("-qf", argv[arg])) {
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
if (++arg >= argc) BX_PANIC(("-qf must be followed by a filename"));
else bochsrc_filename = argv[arg];
}
#if BX_WITH_CARBON
else if (!strncmp ("-psn", argv[arg], 4)) {
// "-psn" is passed if we are launched by double-clicking
// ugly hack. I don't know how to open a window to print messages in,
// so put them in /tmp/early-bochs-out.txt. Sorry. -bbd
io->init_log("/tmp/early-bochs-out.txt");
BX_INFO (("I was launched by double clicking. Fixing home directory."));
arg = argc; // ignore all other args.
setupWorkingDirectory (argv[0]);
// there is no stdin/stdout so disable the text-based config interface.
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
char cwd[MAXPATHLEN];
getwd (cwd);
BX_INFO (("Now my working directory is %s", cwd));
// if it was started from command line, there could be some args still.
for (int a=0; a<argc; a++) {
BX_INFO (("argument %d is %s", a, argv[a]));
}
}
#endif
else if (argv[arg][0] == '-') {
print_usage();
BX_PANIC (("command line arg '%s' was not understood", argv[arg]));
}
else {
// the arg did not start with -, so stop interpreting flags
break;
}
arg++;
}
#if BX_WITH_CARBON
if(!getenv("BXSHARE"))
{
CFBundleRef mainBundle;
CFURLRef bxshareDir;
char bxshareDirPath[MAXPATHLEN];
BX_INFO (("fixing default bxshare location ..."));
// set bxshare to the directory that contains our application
mainBundle = CFBundleGetMainBundle();
BX_ASSERT(mainBundle != NULL);
bxshareDir = CFBundleCopyBundleURL(mainBundle);
BX_ASSERT(bxshareDir != NULL);
// translate this to a unix style full path
if(!CFURLGetFileSystemRepresentation(bxshareDir, true, (UInt8 *)bxshareDirPath, MAXPATHLEN))
{
BX_PANIC(("Unable to work out bxshare path! (Most likely path too long!)"));
return -1;
}
char *c;
c = (char*) bxshareDirPath;
while (*c != '\0') /* go to end */
c++;
while (*c != '/') /* back up to parent */
c--;
*c = '\0'; /* cut off last part (binary name) */
setenv("BXSHARE", bxshareDirPath, 1);
BX_INFO (("now my BXSHARE is %s", getenv("BXSHARE")));
CFRelease(bxshareDir);
}
#endif
#if BX_PLUGINS
// set a default plugin path, in case the user did not specify one
#if BX_WITH_CARBON
// if there is no stdin, then we must create our own LTDL_LIBRARY_PATH.
// also if there is no LTDL_LIBRARY_PATH, but we have a bundle since we're here
// This is here so that it is available whenever --with-carbon is defined but
// the above code might be skipped, as in --with-sdl --with-carbon
if(!isatty(STDIN_FILENO) || !getenv("LTDL_LIBRARY_PATH"))
{
CFBundleRef mainBundle;
CFURLRef libDir;
char libDirPath[MAXPATHLEN];
if(!isatty(STDIN_FILENO))
{
// there is no stdin/stdout so disable the text-based config interface.
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
}
BX_INFO (("fixing default lib location ..."));
// locate the lib directory within the application bundle.
// our libs have been placed in bochs.app/Contents/(current platform aka MacOS)/lib
// This isn't quite right, but they are platform specific and we haven't put
// our plugins into true frameworks and bundles either
mainBundle = CFBundleGetMainBundle();
BX_ASSERT(mainBundle != NULL);
libDir = CFBundleCopyAuxiliaryExecutableURL( mainBundle, CFSTR("lib"));
BX_ASSERT(libDir != NULL);
// translate this to a unix style full path
if(!CFURLGetFileSystemRepresentation(libDir, true, (UInt8 *)libDirPath, MAXPATHLEN))
{
BX_PANIC(("Unable to work out ltdl library path within bochs bundle! (Most likely path too long!)"));
return -1;
}
setenv("LTDL_LIBRARY_PATH", libDirPath, 1);
BX_INFO (("now my LTDL_LIBRARY_PATH is %s", getenv("LTDL_LIBRARY_PATH")));
CFRelease(libDir);
}
#elif BX_HAVE_GETENV && BX_HAVE_SETENV
if (getenv("LTDL_LIBRARY_PATH") != NULL) {
BX_INFO (("LTDL_LIBRARY_PATH is set to '%s'", getenv("LTDL_LIBRARY_PATH")));
} else {
BX_INFO (("LTDL_LIBRARY_PATH not set. using compile time default '%s'",
BX_PLUGIN_PATH));
setenv("LTDL_LIBRARY_PATH", BX_PLUGIN_PATH, 1);
}
if (getenv("BXSHARE") != NULL) {
BX_INFO (("BXSHARE is set to '%s'", getenv("BXSHARE")));
} else {
BX_INFO (("BXSHARE not set. using compile time default '%s'",
BX_SHARE_PATH));
setenv("BXSHARE", BX_SHARE_PATH, 1);
}
#else
// we don't have getenv or setenv. Do nothing.
#endif
#endif /* if BX_PLUGINS */
#if !BX_USE_CONFIG_INTERFACE
// this allows people to get quick start behavior by default
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_QUICK_START);
#endif
int norcfile = 1;
if (load_rcfile) {
/* parse configuration file and command line arguments */
#ifdef WIN32
int length;
if (bochsrc_filename != NULL) {
lstrcpy(bx_startup_flags.initial_dir, bochsrc_filename);
length = lstrlen(bx_startup_flags.initial_dir);
while ((length > 1) && (bx_startup_flags.initial_dir[length-1] != 92)) length--;
bx_startup_flags.initial_dir[length] = 0;
} else {
bx_startup_flags.initial_dir[0] = 0;
}
#endif
if (bochsrc_filename == NULL) bochsrc_filename = bx_find_bochsrc ();
if (bochsrc_filename)
norcfile = bx_read_configuration (bochsrc_filename);
}
if (norcfile) {
// No configuration was loaded, so the current settings are unusable.
// Switch off quick start so that we will drop into the configuration
// interface.
if (SIM->get_param_enum(BXP_BOCHS_START)->get() == BX_QUICK_START) {
if (!SIM->test_for_text_console ())
BX_PANIC(("Unable to start Bochs without a bochsrc.txt and without a text console"));
else
BX_ERROR (("Switching off quick start, because no configuration file was found."));
}
SIM->get_param_enum(BXP_BOCHS_START)->set (BX_LOAD_START);
}
// parse the rest of the command line. This is done after reading the
// configuration file so that the command line arguments can override
// the settings from the file.
if (bx_parse_cmdline (arg, argc, argv)) {
BX_PANIC(("There were errors while parsing the command line"));
return -1;
}
// initialize plugin system. This must happen before we attempt to
// load any modules.
plugin_startup();
return 0;
}
bx_bool load_and_init_display_lib () {
if (bx_gui != NULL) {
// bx_gui has already been filled in. This happens when you start
// the simulation for the second time.
// Also, if you load wxWidgets as the configuration interface. Its
// plugin_init will install wxWidgets as the bx_gui.
return true;
}
BX_ASSERT (bx_gui == NULL);
bx_param_enum_c *ci_param = SIM->get_param_enum (BXP_SEL_CONFIG_INTERFACE);
char *ci_name = ci_param->get_choice (ci_param->get ());
bx_param_enum_c *gui_param = SIM->get_param_enum(BXP_SEL_DISPLAY_LIBRARY);
char *gui_name = gui_param->get_choice (gui_param->get ());
if (!strcmp(ci_name, "wx")) {
BX_ERROR(("change of the config interface to wx not implemented yet"));
}
if (!strcmp (gui_name, "wx")) {
// they must not have used wx as the configuration interface, or bx_gui
// would already be initialized. Sorry, it doesn't work that way.
BX_ERROR (("wxWidgets was not used as the configuration interface, so it cannot be used as the display library"));
// choose another, hopefully different!
gui_param->set (0);
gui_name = gui_param->get_choice (gui_param->get ());
if (!strcmp (gui_name, "wx")) {
BX_PANIC (("no alternative display libraries are available"));
return false;
}
BX_ERROR (("changing display library to '%s' instead", gui_name));
}
#if BX_WITH_AMIGAOS
if (!strcmp (gui_name, "amigaos"))
PLUG_load_plugin (amigaos, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_BEOS
if (!strcmp (gui_name, "beos"))
PLUG_load_plugin (beos, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_CARBON
if (!strcmp (gui_name, "carbon"))
PLUG_load_plugin (carbon, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_MACOS
if (!strcmp (gui_name, "macos"))
PLUG_load_plugin (macintosh, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_NOGUI
if (!strcmp (gui_name, "nogui"))
PLUG_load_plugin (nogui, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_RFB
if (!strcmp (gui_name, "rfb"))
PLUG_load_plugin (rfb, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_SDL
if (!strcmp (gui_name, "sdl"))
PLUG_load_plugin (sdl, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_SVGA
if (!strcmp (gui_name, "svga"))
PLUG_load_plugin (svga, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_TERM
if (!strcmp (gui_name, "term"))
PLUG_load_plugin (term, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_WIN32
if (!strcmp (gui_name, "win32"))
PLUG_load_plugin (win32, PLUGTYPE_OPTIONAL);
#endif
#if BX_WITH_X11
if (!strcmp (gui_name, "x"))
PLUG_load_plugin (x, PLUGTYPE_OPTIONAL);
#endif
#if BX_GUI_SIGHANDLER
// set the flag for guis requiring a GUI sighandler.
// useful when guis are compiled as plugins
// only term for now
if (!strcmp (gui_name, "term")) {
bx_gui_sighandler = 1;
}
#endif
BX_ASSERT (bx_gui != NULL);
return true;
}
int
bx_begin_simulation (int argc, char *argv[])
{
// deal with gui selection
if (!load_and_init_display_lib ()) {
BX_PANIC (("no gui module was loaded"));
return 0;
}
#if BX_DEBUGGER
// If using the debugger, it will take control and call
// bx_init_hardware() and cpu_loop()
bx_dbg_main(argc, argv);
#else
#if BX_GDBSTUB
// If using gdbstub, it will take control and call
// bx_init_hardware() and cpu_loop()
if (bx_dbg.gdbstub_enabled)
bx_gdbstub_init (argc, argv);
else
#endif
{
bx_init_hardware();
if (bx_options.load32bitOSImage.OwhichOS->get ()) {
void bx_load32bitOSimagehack(void);
bx_load32bitOSimagehack();
}
SIM->set_init_done (1);
// update headerbar buttons since drive status can change during init
bx_gui->update_drive_status_buttons ();
// iniialize statusbar and set all items inactive
bx_gui->statusbar_setitem(-1, 0);
// The set handler for mouse_enabled does not actually update the gui
// until init_done is set. This forces the set handler to be called,
// which sets up the mouse enabled GUI-specific stuff correctly.
// Not a great solution but it works. BBD
bx_options.Omouse_enabled->set (bx_options.Omouse_enabled->get ());
if (BX_SMP_PROCESSORS == 1) {
// only one processor, run as fast as possible by not messing with
// quantums and loops.
BX_CPU(0)->cpu_loop(1);
// for one processor, the only reason for cpu_loop to return is
// that kill_bochs_request was set by the GUI interface.
} else {
// SMP simulation: do a few instructions on each processor, then switch
// to another. Increasing quantum speeds up overall performance, but
// reduces granularity of synchronization between processors.
int processor = 0;
int quantum = 5;
while (1) {
// do some instructions in each processor
BX_CPU(processor)->cpu_loop(quantum);
processor = (processor+1) % BX_SMP_PROCESSORS;
if (BX_CPU(0)->kill_bochs_request)
break;
if (processor == 0)
BX_TICKN(quantum);
}
}
}
#endif /* ! BX_DEBUGGER */
BX_INFO (("cpu loop quit, shutting down simulator"));
bx_atexit ();
return(0);
}
int
bx_init_hardware()
{
// all configuration has been read, now initialize everything.
if (SIM->get_param_enum(BXP_BOCHS_START)->get ()==BX_QUICK_START) {
for (int level=0; level<N_LOGLEV; level++) {
int action = SIM->get_default_log_action (level);
#if !BX_USE_CONFIG_INTERFACE
if (action == ACT_ASK) action = ACT_FATAL;
#endif
io->set_log_action (level, action);
}
}
bx_pc_system.init_ips(bx_options.Oips->get ());
if(bx_options.log.Ofilename->getptr()[0]!='-') {
BX_INFO (("using log file %s", bx_options.log.Ofilename->getptr ()));
io->init_log(bx_options.log.Ofilename->getptr ());
}
io->set_log_prefix(bx_options.log.Oprefix->getptr());
// Output to the log file the cpu settings
// This will by handy for bug reports
BX_INFO(("Bochs x86 Emulator %s", VER_STRING));
BX_INFO((" %s", REL_STRING));
BX_INFO(("System configuration"));
BX_INFO((" processors: %d",BX_SMP_PROCESSORS));
BX_INFO((" A20 line support: %s",BX_SUPPORT_A20?"yes":"no"));
BX_INFO((" APIC support: %s",BX_SUPPORT_APIC?"yes":"no"));
BX_INFO(("CPU configuration"));
BX_INFO((" level: %d",BX_CPU_LEVEL));
BX_INFO((" fpu support: %s",BX_SUPPORT_FPU?"yes":"no"));
BX_INFO((" paging support: %s, tlb enabled: %s",BX_SUPPORT_PAGING?"yes":"no",BX_USE_TLB?"yes":"no"));
BX_INFO((" mmx support: %s",BX_SUPPORT_MMX?"yes":"no"));
BX_INFO((" sse support: %s",BX_SUPPORT_SSE==2?"2":BX_SUPPORT_SSE==1?"1":"no"));
BX_INFO((" v8086 mode support: %s",BX_SUPPORT_V8086_MODE?"yes":"no"));
BX_INFO((" 3dnow! support: %s",BX_SUPPORT_3DNOW?"yes":"no"));
BX_INFO((" PAE support: %s",BX_SupportPAE?"yes":"no"));
BX_INFO((" PGE support: %s",BX_SupportGlobalPages?"yes":"no"));
BX_INFO((" PSE support: %s",BX_SUPPORT_4MEG_PAGES?"yes":"no"));
BX_INFO((" x86-64 support: %s",BX_SUPPORT_X86_64?"yes":"no"));
BX_INFO((" SEP support: %s",BX_SUPPORT_SEP?"yes":"no"));
BX_INFO(("Optimization configuration"));
BX_INFO((" Guest2HostTLB support: %s",BX_SupportGuest2HostTLB?"yes":"no"));
BX_INFO((" RepeatSpeedups support: %s",BX_SupportRepeatSpeedups?"yes":"no"));
BX_INFO((" Icache support: %s",BX_SUPPORT_ICACHE?"yes":"no"));
BX_INFO((" Host Asm support: %s",BX_SupportHostAsms?"yes":"no"));
BX_INFO((" Fast function calls: %s",BX_FAST_FUNC_CALL?"yes":"no"));
// set up memory and CPU objects
#if BX_SUPPORT_APIC
bx_generic_apic_c::reset_all_ids ();
#endif
// Check if there is a romimage
if (strcmp(bx_options.rom.Opath->getptr (),"") == 0) {
BX_ERROR(("No romimage to load. Is your bochsrc file loaded/valid ?"));
}
#if BX_SMP_PROCESSORS==1
BX_MEM(0)->init_memory(bx_options.memory.Osize->get () * 1024*1024);
// First load the BIOS and VGABIOS
BX_MEM(0)->load_ROM(bx_options.rom.Opath->getptr (), bx_options.rom.Oaddress->get (), 0);
BX_MEM(0)->load_ROM(bx_options.vgarom.Opath->getptr (), 0xc0000, 1);
// Then load the optional ROM images
if (strcmp(bx_options.optrom[0].Opath->getptr (),"") !=0 )
BX_MEM(0)->load_ROM(bx_options.optrom[0].Opath->getptr (), bx_options.optrom[0].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[1].Opath->getptr (),"") !=0 )
BX_MEM(0)->load_ROM(bx_options.optrom[1].Opath->getptr (), bx_options.optrom[1].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[2].Opath->getptr (),"") !=0 )
BX_MEM(0)->load_ROM(bx_options.optrom[2].Opath->getptr (), bx_options.optrom[2].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[3].Opath->getptr (),"") !=0 )
BX_MEM(0)->load_ROM(bx_options.optrom[3].Opath->getptr (), bx_options.optrom[3].Oaddress->get (), 2);
BX_CPU(0)->init (BX_MEM(0));
BX_CPU(0)->set_cpu_id(0);
#if BX_SUPPORT_APIC
BX_CPU(0)->local_apic.set_id (0);
#endif
BX_CPU(0)->sanity_checks();
BX_INSTR_INIT(0);
BX_CPU(0)->reset(BX_RESET_HARDWARE);
#else
// SMP initialization
bx_mem_array[0] = new BX_MEM_C ();
bx_mem_array[0]->init_memory(bx_options.memory.Osize->get () * 1024*1024);
// First load the BIOS and VGABIOS
bx_mem_array[0]->load_ROM(bx_options.rom.Opath->getptr (), bx_options.rom.Oaddress->get (), 0);
bx_mem_array[0]->load_ROM(bx_options.vgarom.Opath->getptr (), 0xc0000, 1);
// Then load the optional ROM images
if (strcmp(bx_options.optrom[0].Opath->getptr (),"") !=0 )
bx_mem_array[0]->load_ROM(bx_options.optrom[0].Opath->getptr (), bx_options.optrom[0].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[1].Opath->getptr (),"") !=0 )
bx_mem_array[0]->load_ROM(bx_options.optrom[1].Opath->getptr (), bx_options.optrom[1].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[2].Opath->getptr (),"") !=0 )
bx_mem_array[0]->load_ROM(bx_options.optrom[2].Opath->getptr (), bx_options.optrom[2].Oaddress->get (), 2);
if (strcmp(bx_options.optrom[3].Opath->getptr (),"") !=0 )
bx_mem_array[0]->load_ROM(bx_options.optrom[3].Opath->getptr (), bx_options.optrom[3].Oaddress->get (), 2);
for (int i=0; i<BX_SMP_PROCESSORS; i++) {
BX_CPU(i) = new BX_CPU_C;
BX_CPU(i)->init (bx_mem_array[0]);
// assign apic ID from the index of this loop
// if !BX_SUPPORT_APIC, this will not compile.
BX_CPU(i)->set_cpu_id(i);
BX_CPU(i)->local_apic.set_id(i);
BX_CPU(i)->sanity_checks();
BX_INSTR_INIT(i);
BX_CPU(i)->reset(BX_RESET_HARDWARE);
}
#endif
#if BX_DEBUGGER == 0
DEV_init_devices();
DEV_reset_devices(BX_RESET_HARDWARE);
bx_gui->init_signal_handlers ();
bx_pc_system.start_timers();
#endif
BX_DEBUG(("bx_init_hardware is setting signal handlers"));
// if not using debugger, then we can take control of SIGINT.
#if !BX_DEBUGGER
signal(SIGINT, bx_signal_handler);
#endif
#if BX_SHOW_IPS
#ifndef __MINGW32__
signal(SIGALRM, bx_signal_handler);
#endif
alarm( 1 );
#endif
return(0);
}
void
bx_init_bx_dbg (void)
{
bx_dbg.floppy = 0;
bx_dbg.keyboard = 0;
bx_dbg.video = 0;
bx_dbg.disk = 0;
bx_dbg.pit = 0;
bx_dbg.pic = 0;
bx_dbg.bios = 0;
bx_dbg.cmos = 0;
bx_dbg.a20 = 0;
bx_dbg.interrupts = 0;
bx_dbg.exceptions = 0;
bx_dbg.unsupported = 0;
bx_dbg.temp = 0;
bx_dbg.reset = 0;
bx_dbg.mouse = 0;
bx_dbg.io = 0;
bx_dbg.debugger = 0;
bx_dbg.xms = 0;
bx_dbg.v8086 = 0;
bx_dbg.paging = 0;
bx_dbg.creg = 0;
bx_dbg.dreg = 0;
bx_dbg.dma = 0;
bx_dbg.unsupported_io = 0;
bx_dbg.record_io = 0;
bx_dbg.serial = 0;
bx_dbg.cdrom = 0;
#if BX_MAGIC_BREAKPOINT
bx_dbg.magic_break_enabled = 0;
#endif
#if BX_GDBSTUB
bx_dbg.gdbstub_enabled = 0;
#endif
}
int
bx_atexit(void)
{
static bx_bool been_here = 0;
if (been_here) return 1; // protect from reentry
been_here = 1;
// in case we ended up in simulation mode, change back to config mode
// so that the user can see any messages left behind on the console.
SIM->set_display_mode (DISP_MODE_CONFIG);
#if BX_PROVIDE_DEVICE_MODELS==1
bx_pc_system.exit();
#endif
#if BX_DEBUGGER == 0
if (SIM && SIM->get_init_done ()) {
for (int cpu=0; cpu<BX_SMP_PROCESSORS; cpu++)
if (BX_CPU(cpu)) BX_CPU(cpu)->atexit();
}
#endif
#if BX_SUPPORT_PCI
if (SIM && SIM->get_init_done ()) {
if (bx_options.Oi440FXSupport->get ()) {
bx_devices.pluginPciBridge->print_i440fx_state();
}
}
#endif
// restore signal handling to defaults
#if !BX_DEBUGGER
BX_INFO (("restoring default signal behavior"));
signal(SIGINT, SIG_DFL);
#endif
#if BX_SHOW_IPS
#ifndef __MINGW32__
signal(SIGALRM, SIG_DFL);
#endif
#endif
return 0;
}
void
bx_signal_handler( int signum)
{
// in a multithreaded environment, a signal such as SIGINT can be sent to all
// threads. This function is only intended to handle signals in the
// simulator thread. It will simply return if called from any other thread.
// Otherwise the BX_PANIC() below can be called in multiple threads at
// once, leading to multiple threads trying to display a dialog box,
// leading to GUI deadlock.
if (!SIM->is_sim_thread ()) {
BX_INFO (("bx_signal_handler: ignored sig %d because it wasn't called from the simulator thread", signum));
return;
}
#if BX_GUI_SIGHANDLER
if (bx_gui_sighandler) {
// GUI signal handler gets first priority, if the mask says it's wanted
if ((1<<signum) & bx_gui->get_sighandler_mask ()) {
bx_gui->sighandler (signum);
return;
}
}
#endif
#if BX_SHOW_IPS
extern unsigned long ips_count;
if (signum == SIGALRM ) {
BX_INFO(("ips = %lu", ips_count));
ips_count = 0;
#ifndef __MINGW32__
signal(SIGALRM, bx_signal_handler);
alarm( 1 );
#endif
return;
}
#endif
#if BX_GUI_SIGHANDLER
if (bx_gui_sighandler) {
if ((1<<signum) & bx_gui->get_sighandler_mask ()) {
bx_gui->sighandler (signum);
return;
}
}
#endif
BX_PANIC(("SIGNAL %u caught", signum));
}
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