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main.cc
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main.cc
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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001-2009 The Bochs Project
//
// 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "bochs.h"
#include "param_names.h"
#include "gui/textconfig.h"
#if BX_USE_TEXTCONFIG && defined(WIN32)
#include "gui/win32dialog.h"
#endif
#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 BX_GUI_SIGHANDLER
bx_bool bx_gui_sighandler = 0;
#endif
// 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_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;
Bit32u apic_id_mask; // determinted by XAPIC option
bx_bool simulate_xapic;
/* typedefs */
#define LOG_THIS genlog->
bx_pc_system_c bx_pc_system;
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
BOCHSAPI BX_MEM_C bx_mem;
char *bochsrc_filename = NULL;
void bx_print_header()
{
printf("%s\n", divider);
char buffer[128];
sprintf (buffer, "Bochs x86 Emulator %s\n", VER_STRING);
bx_center_print(stdout, buffer, 72);
if (REL_STRING[0]) {
sprintf(buffer, "%s\n", REL_STRING);
bx_center_print(stdout, buffer, 72);
}
printf("%s\n", divider);
}
#if BX_WITH_CARBON
/* Original code by Darrell Walisser - [email protected] */
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() & 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 (void) {
#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);
BX_INSTR_INIT_ENV();
if (bx_init_main(bx_startup_flags.argc, bx_startup_flags.argv) < 0)
{ BX_INSTR_EXIT_ENV();
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
}
else if (!strcmp(ci_name, "win32config")) {
#if BX_USE_TEXTCONFIG && defined(WIN32)
init_win32_config_interface();
#else
BX_PANIC(("configuration interface 'win32config' 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
BX_INSTR_EXIT_ENV();
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 CDECL 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(void)
{
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"
" -log filename specify Bochs log file name\n"
#if BX_DEBUGGER
" -rc filename execute debugger commands stored in file\n"
" -dbglog filename specify Bochs internal debugger log file name\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("-log", argv[arg])) {
if (++arg >= argc) BX_PANIC(("-log must be followed by a filename"));
else SIM->get_param_string(BXPN_LOG_FILENAME)->set(argv[arg]);
}
#if BX_DEBUGGER
else if (!strcmp("-dbglog", argv[arg])) {
if (++arg >= argc) BX_PANIC(("-dbglog must be followed by a filename"));
else SIM->get_param_string(BXPN_DEBUGGER_LOG_FILENAME)->set(argv[arg]);
}
#endif
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 */
// initialize plugin system. This must happen before we attempt to
// load any modules.
plugin_startup();
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;
}
}
return 0;
}
bx_bool load_and_init_display_lib(void)
{
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();
#if BX_CPU_LEVEL >= 6
simulate_xapic = SIM->get_param_bool(BXPN_CPUID_XAPIC)->get();
#else
simulate_xapic = 0;
#endif
// For P6 and Pentium family processors the local APIC ID feild is 4 bits
// APIC_MAX_ID indicate broadcast so it can't be used as valid APIC ID
apic_id_mask = simulate_xapic ? 0xFF : 0xF;
// leave one APIC ID to I/O APIC
unsigned max_smp_threads = apic_id_mask - 1;
if (bx_cpu_count > max_smp_threads) {
BX_PANIC(("cpu: too many SMP threads defined, only %u threads supported by %sAPIC",
max_smp_threads, simulate_xapic ? "x" : "legacy "));
}
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(void)
{
// 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());
#if BX_CPU_LEVEL >= 5