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Bochs/bochs/main.cc
Stanislav Shwartsman 7496ee7afa VM8086 is always ON
2007-12-21 21:16:34 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id: main.cc,v 1.370 2007-12-21 21:16:34 sshwarts 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 "cpu/cpu.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
extern "C" {
#include <signal.h>
}
#if defined(__MINGW32__) || defined(_MSC_VER)
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);
#endif
void bx_init_hardware(void);
void bx_init_options(void);
void bx_init_bx_dbg(void);
static const char *divider = "========================================================================";
static logfunctions thePluginLog;
logfunctions *pluginlog = &thePluginLog;
bx_startup_flags_t bx_startup_flags;
bx_bool bx_user_quit;
Bit8u bx_cpu_count;
/* typedefs */
#define LOG_THIS genlog->
#if ( BX_PROVIDE_DEVICE_MODELS==1 )
bx_pc_system_c bx_pc_system;
#endif
bx_debug_t bx_dbg;
typedef BX_CPU_C *BX_CPU_C_PTR;
#if BX_SUPPORT_SMP
// multiprocessor simulation, we need an array of cpus
BOCHSAPI BX_CPU_C_PTR *bx_cpu_array = NULL;
#else
// single processor simulation, so there's one of everything
BOCHSAPI BX_CPU_C bx_cpu;
#endif
#if BX_PROVIDE_CPU_MEMORY==1
BOCHSAPI BX_MEM_C bx_mem;
#endif
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
#if BX_DEBUGGER
void print_tree(bx_param_c *node, int level)
{
int i;
char tmpstr[BX_PATHNAME_LEN], tmpbyte[4];
for (i=0; i<level; i++)
dbg_printf(" ");
if (node == NULL) {
dbg_printf("NULL pointer\n");
return;
}
switch (node->get_type()) {
case BXT_PARAM_NUM:
if (((bx_param_num_c*)node)->get_base() == BASE_DEC) {
dbg_printf("%s = " FMT_LL "d (number)\n", node->get_name(), ((bx_param_num_c*)node)->get64());
} else {
dbg_printf("%s = 0x" FMT_LL "x (hex number)\n", node->get_name(), ((bx_param_num_c*)node)->get64());
}
break;
case BXT_PARAM_BOOL:
dbg_printf("%s = %s (boolean)\n", node->get_name(), ((bx_param_bool_c*)node)->get()?"true":"false");
break;
case BXT_PARAM_ENUM:
dbg_printf("%s = '%s' (enum)\n", node->get_name(), ((bx_param_enum_c*)node)->get_selected());
break;
case BXT_PARAM_STRING:
if (((bx_param_string_c*)node)->get_options()->get() & bx_param_string_c::RAW_BYTES) {
tmpstr[0] = 0;
for (i = 0; i < ((bx_param_string_c*)node)->get_maxsize(); i++) {
if (i > 0) {
tmpbyte[0] = ((bx_param_string_c*)node)->get_separator();
tmpbyte[1] = 0;
strcat(tmpstr, tmpbyte);
}
sprintf(tmpbyte, "%02x", (Bit8u)((bx_param_string_c*)node)->getptr()[i]);
strcat(tmpstr, tmpbyte);
}
dbg_printf("%s = '%s' (raw byte string)\n", node->get_name(), tmpstr);
} else {
dbg_printf("%s = '%s' (string)\n", node->get_name(), ((bx_param_string_c*)node)->getptr());
}
break;
case BXT_LIST:
{
dbg_printf("%s = \n", node->get_name());
bx_list_c *list = (bx_list_c*)node;
for (i=0; i < list->get_size(); i++) {
print_tree(list->get(i), level+1);
}
break;
}
case BXT_PARAM_DATA:
dbg_printf("%s = 'size=%d' (binary data)\n", node->get_name(), ((bx_shadow_data_c*)node)->get_size());
break;
default:
dbg_printf("%s (unknown parameter type)\n", node->get_name());
}
}
#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(BXPN_SEL_CONFIG_INTERFACE);
const char *ci_name = ci_param->get_selected();
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));
}
ci_param->set_enabled(0);
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.
int RedirectIOToConsole()
{
int hConHandle;
long lStdHandle;
FILE *fp;
// allocate a console for this app
if (!AllocConsole()) {
MessageBox(NULL, "Failed to create text console", "Error", MB_ICONERROR);
return 0;
}
// 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);
return 1;
}
#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;
if (!RedirectIOToConsole()) {
return 1;
}
SetConsoleTitle("Bochs for Windows (wxWidgets port) - Console");
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.
if (!RedirectIOToConsole()) {
return 1;
}
#endif
#if defined(WIN32)
SetConsoleTitle("Bochs for Windows - Console");
#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"
" -benchmark n run bochs in benchmark mode for millions of emulated ticks\n"
" -r path restore the Bochs state from path\n"
#if BX_DEBUGGER
" -rc filename execute debugger commands stored in file\n"
#endif
" --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 bochs config options to exist by the time they are called.
bx_init_bx_dbg();
bx_init_options();
bx_print_header();
SIM->get_param_enum(BXPN_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)
#if defined(WIN32)
|| !strncmp("/?", argv[arg], 2)
#endif
) {
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(BXPN_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(BXPN_BOCHS_START)->set(BX_QUICK_START);
if (++arg >= argc) BX_PANIC(("-qf must be followed by a filename"));
else bochsrc_filename = argv[arg];
}
else if (!strcmp("-benchmark", argv[arg])) {
SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
if (++arg >= argc) BX_PANIC(("-benchmark must be followed by a number"));
else SIM->get_param_num(BXPN_BOCHS_BENCHMARK)->set(atoi(argv[arg]));
}
else if (!strcmp("-r", argv[arg])) {
if (++arg >= argc) BX_PANIC(("-r must be followed by a path"));
else {
SIM->get_param_enum(BXPN_BOCHS_START)->set(BX_QUICK_START);
SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(1);
SIM->get_param_string(BXPN_RESTORE_PATH)->set(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(BXPN_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
#if BX_DEBUGGER
else if (!strcmp("-rc", argv[arg])) {
// process "-rc filename" option, if it exists
if (++arg >= argc) BX_PANIC(("-rc must be followed by a filename"));
else bx_dbg_set_rcfile(argv[arg]);
}
#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(BXPN_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 */
int norcfile = 1;
if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
load_rcfile = 0;
norcfile = 0;
}
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(BXPN_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(BXPN_BOCHS_START)->set(BX_LOAD_START);
}
if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
if (arg < argc) {
BX_ERROR(("WARNING: bochsrc options are ignored in restore mode!"));
}
}
else {
// 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(BXPN_SEL_CONFIG_INTERFACE);
const char *ci_name = ci_param->get_selected();
bx_param_enum_c *gui_param = SIM->get_param_enum(BXPN_SEL_DISPLAY_LIBRARY);
const char *gui_name = gui_param->get_selected();
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_selected();
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[])
{
SIM->init_save_restore();
if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
if (!SIM->restore_config()) {
BX_PANIC(("cannot restore configuration"));
SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
}
}
// deal with gui selection
if (!load_and_init_display_lib ()) {
BX_PANIC (("no gui module was loaded"));
return 0;
}
bx_cpu_count = SIM->get_param_num(BXPN_CPU_NPROCESSORS)->get() *
SIM->get_param_num(BXPN_CPU_NCORES)->get() *
SIM->get_param_num(BXPN_CPU_NTHREADS)->get();
BX_ASSERT(bx_cpu_count <= BX_MAX_SMP_THREADS_SUPPORTED);
BX_ASSERT(bx_cpu_count > 0);
bx_init_hardware();
if (SIM->get_param_enum(BXPN_LOAD32BITOS_WHICH)->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
if (!SIM->get_param_bool(BXPN_RESTORE_FLAG)->get())
{
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
SIM->get_param_bool(BXPN_MOUSE_ENABLED)->set(SIM->get_param_bool(BXPN_MOUSE_ENABLED)->get());
#if BX_DEBUGGER
// If using the debugger, it will take control and call
// bx_init_hardware() and cpu_loop()
bx_dbg_main();
#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();
else
#endif
{
if (BX_SMP_PROCESSORS == 1) {
// only one processor, run as fast as possible by not messing with
// quantums and loops.
while (1) {
BX_CPU(0)->cpu_loop(0);
if (bx_pc_system.kill_bochs_request)
break;
}
// 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 = SIM->get_param_num(BXPN_SMP_QUANTUM)->get();
while (1) {
// do some instructions in each processor
BX_CPU(processor)->cpu_loop(quantum);
processor = (processor+1) % BX_SMP_PROCESSORS;
if (bx_pc_system.kill_bochs_request)
break;
if (processor == 0)
BX_TICKN(quantum);
}
}
}
#endif /* BX_DEBUGGER == 0 */
BX_INFO(("cpu loop quit, shutting down simulator"));
bx_atexit();
return(0);
}
void bx_stop_simulation()
{
// in wxWidgets, the whole simulator is running in a separate thread.
// our only job is to end the thread as soon as possible, NOT to shut
// down the whole application with an exit.
BX_CPU(0)->async_event = 1;
bx_pc_system.kill_bochs_request = 1;
// the cpu loop will exit very soon after this condition is set.
}
void bx_sr_after_restore_state(void)
{
#if BX_SUPPORT_SMP == 0
BX_CPU(0)->after_restore_state();
#else
for (unsigned i=0; i<BX_SMP_PROCESSORS; i++) {
BX_CPU(i)->after_restore_state();
}
#endif
DEV_after_restore_state();
}
void bx_init_hardware()
{
// all configuration has been read, now initialize everything.
if (SIM->get_param_enum(BXPN_BOCHS_START)->get()==BX_QUICK_START) {
for (int level=0; level<N_LOGLEV; level++) {
int action = SIM->get_default_log_action(level);
io->set_log_action(level, action);
}
}
bx_pc_system.initialize(SIM->get_param_num(BXPN_IPS)->get());
if (SIM->get_param_string(BXPN_LOG_FILENAME)->getptr()[0]!='-') {
BX_INFO (("using log file %s", SIM->get_param_string(BXPN_LOG_FILENAME)->getptr()));
io->init_log(SIM->get_param_string(BXPN_LOG_FILENAME)->getptr());
}
io->set_log_prefix(SIM->get_param_string(BXPN_LOG_PREFIX)->getptr());
// Output to the log file the cpu and device 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 (cores=%u, HT threads=%u)", BX_SMP_PROCESSORS,
SIM->get_param_num(BXPN_CPU_NCORES)->get(), SIM->get_param_num(BXPN_CPU_NTHREADS)->get()));
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((" TLB enabled: %s",BX_USE_TLB?"yes":"no"));
#if BX_SUPPORT_SMP
BX_INFO((" SMP support: yes, quantum=%d", SIM->get_param_num(BXPN_SMP_QUANTUM)->get()));
#else
BX_INFO((" SMP support: no"));
#endif
BX_INFO((" FPU support: %s",BX_SUPPORT_FPU?"yes":"no"));
BX_INFO((" MMX support: %s",BX_SUPPORT_MMX?"yes":"no"));
if (BX_SUPPORT_SSE == 0)
BX_INFO((" SSE support: no"));
else
BX_INFO((" SSE support: %d",BX_SUPPORT_SSE));
BX_INFO((" CLFLUSH support: %s",BX_SUPPORT_CLFLUSH?"yes":"no"));
BX_INFO((" VME support: %s",BX_SUPPORT_VME?"yes":"no"));
BX_INFO((" 3dnow! support: %s",BX_SUPPORT_3DNOW?"yes":"no"));
BX_INFO((" PAE support: %s",BX_SUPPORT_PAE?"yes":"no"));
BX_INFO((" PGE support: %s",BX_SUPPORT_GLOBAL_PAGES?"yes":"no"));
BX_INFO((" PSE support: %s",BX_SUPPORT_LARGE_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((" MWAIT support: %s",BX_SUPPORT_MONITOR_MWAIT?"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((" Trace cache support: %s",BX_SUPPORT_TRACE_CACHE?"yes":"no"));
BX_INFO((" Fast function calls: %s",BX_FAST_FUNC_CALL?"yes":"no"));
BX_INFO(("Devices configuration"));
BX_INFO((" ACPI support: %s",BX_SUPPORT_ACPI?"yes":"no"));
BX_INFO((" NE2000 support: %s",BX_SUPPORT_NE2K?"yes":"no"));
BX_INFO((" PCI support: %s",BX_SUPPORT_PCI?"yes":"no"));
BX_INFO((" SB16 support: %s",BX_SUPPORT_SB16?"yes":"no"));
BX_INFO((" USB support: %s",BX_SUPPORT_PCIUSB?"yes":"no"));
BX_INFO((" VGA extension support: %s %s",BX_SUPPORT_VBE?"vbe":"",
BX_SUPPORT_CLGD54XX?"cirrus":""));
// Check if there is a romimage
if (strcmp(SIM->get_param_string(BXPN_ROM_PATH)->getptr(),"") == 0) {
BX_ERROR(("No romimage to load. Is your bochsrc file loaded/valid ?"));
}
// set one shot timer for benchmark mode if needed, the timer will fire
// once and kill Bochs simulation after predefined amount of emulated
// ticks
int benchmark_mode = SIM->get_param_num(BXPN_BOCHS_BENCHMARK)->get();
if (benchmark_mode) {
BX_INFO(("Bochs benchmark mode is ON (~%d millions of ticks)", benchmark_mode));
bx_pc_system.register_timer_ticks(&bx_pc_system, bx_pc_system_c::benchmarkTimer,
(Bit64u) benchmark_mode * 1000000, 0, 1, "benchmark.timer");
}
// set up memory and CPU objects
bx_param_num_c *bxp_memsize = SIM->get_param_num(BXPN_MEM_SIZE);
Bit32u memSize = bxp_memsize->get() * 1024*1024;
#if BX_SUPPORT_ICACHE
pageWriteStampTable.alloc(memSize);
#endif
BX_MEM(0)->init_memory(memSize);
// First load the BIOS and VGABIOS
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_ROM_PATH)->getptr(),
SIM->get_param_num(BXPN_ROM_ADDRESS)->get(), 0);
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_VGA_ROM_PATH)->getptr(), 0xc0000, 1);
// Then load the optional ROM images
if (strcmp(SIM->get_param_string(BXPN_OPTROM1_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM1_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM1_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTROM2_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM2_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM2_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTROM3_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM3_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM3_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTROM4_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_ROM(SIM->get_param_string(BXPN_OPTROM4_PATH)->getptr(), SIM->get_param_num(BXPN_OPTROM4_ADDRESS)->get(), 2);
// Then load the optional RAM images
if (strcmp(SIM->get_param_string(BXPN_OPTRAM1_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM1_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM1_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTRAM2_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM2_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM2_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTRAM3_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM3_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM3_ADDRESS)->get(), 2);
if (strcmp(SIM->get_param_string(BXPN_OPTRAM4_PATH)->getptr(), "") !=0)
BX_MEM(0)->load_RAM(SIM->get_param_string(BXPN_OPTRAM4_PATH)->getptr(), SIM->get_param_num(BXPN_OPTRAM4_ADDRESS)->get(), 2);
#if BX_SUPPORT_SMP == 0
BX_CPU(0)->initialize(BX_MEM(0));
BX_CPU(0)->sanity_checks();
BX_CPU(0)->register_state();
BX_INSTR_INIT(0);
#else
bx_cpu_array = new BX_CPU_C_PTR[BX_SMP_PROCESSORS];
for (unsigned i=0; i<BX_SMP_PROCESSORS; i++) {
BX_CPU(i) = new BX_CPU_C(i);
BX_CPU(i)->initialize(BX_MEM(0)); // assign local apic id in 'initialize' method
BX_CPU(i)->sanity_checks();
BX_CPU(i)->register_state();
BX_INSTR_INIT(i);
}
#endif
DEV_init_devices();
bx_pc_system.register_state();
DEV_register_state();
if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
if (!SIM->restore_logopts()) {
BX_PANIC(("cannot restore log options"));
SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
}
}
// will enable A20 line and reset CPU and devices
bx_pc_system.Reset(BX_RESET_HARDWARE);
if (SIM->get_param_bool(BXPN_RESTORE_FLAG)->get()) {
if (SIM->restore_hardware()) {
bx_sr_after_restore_state();
} else {
BX_PANIC(("cannot restore hardware state"));
SIM->get_param_bool(BXPN_RESTORE_FLAG)->set(0);
}
}
bx_gui->init_signal_handlers();
bx_pc_system.start_timers();
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
#if !defined(__MINGW32__) && !defined(_MSC_VER)
signal(SIGALRM, bx_signal_handler);
#endif
alarm( 1 );
#endif
}
void bx_init_bx_dbg(void)
{
#if BX_DEBUGGER
bx_dbg_init_infile();
#endif
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)
{
if (!SIM->get_init_done()) return 1; // protect from reentry
// 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_DEBUGGER == 0
if (SIM && SIM->get_init_done()) {
for (int cpu=0; cpu<BX_SMP_PROCESSORS; cpu++)
#if BX_SUPPORT_SMP
if (BX_CPU(cpu))
#endif
BX_CPU(cpu)->atexit();
}
#endif
BX_MEM(0)->cleanup_memory();
#if BX_PROVIDE_DEVICE_MODELS==1
bx_pc_system.exit();
#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
SIM->set_init_done(0);
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
static Bit64u ticks_count = 0;
static Bit64u counts = 0;
if (signum == SIGALRM)
{
// amount of system ticks passed from last time the handler was called
Bit64u ips_count = bx_pc_system.time_ticks() - ticks_count;
if (ips_count) {
bx_gui->show_ips((Bit32u) ips_count);
ticks_count = bx_pc_system.time_ticks();
counts++;
if (bx_dbg.print_timestamps) {
printf("IPS: %u\taverage = %u\t\t(%us)\n",
(unsigned) ips_count, (unsigned) (ticks_count/counts), (unsigned) counts);
}
}
#if !defined(__MINGW32__) && !defined(_MSC_VER)
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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