| 1 |
/* |
| 2 |
* main_unix.cpp - Startup code for Unix |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-1999 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#include "sysdeps.h" |
| 22 |
|
| 23 |
#include <stdio.h> |
| 24 |
#include <stdlib.h> |
| 25 |
#include <pthread.h> |
| 26 |
#include <signal.h> |
| 27 |
|
| 28 |
#include "cpu_emulation.h" |
| 29 |
#include "sys.h" |
| 30 |
#include "rom_patches.h" |
| 31 |
#include "xpram.h" |
| 32 |
#include "timer.h" |
| 33 |
#include "video.h" |
| 34 |
#include "prefs.h" |
| 35 |
#include "prefs_editor.h" |
| 36 |
#include "macos_util.h" |
| 37 |
#include "user_strings.h" |
| 38 |
#include "version.h" |
| 39 |
#include "main.h" |
| 40 |
|
| 41 |
#define DEBUG 0 |
| 42 |
#include "debug.h" |
| 43 |
|
| 44 |
|
| 45 |
#include <X11/Xlib.h> |
| 46 |
|
| 47 |
#if ENABLE_GTK |
| 48 |
#include <gtk/gtk.h> |
| 49 |
#endif |
| 50 |
|
| 51 |
#if ENABLE_XF86_DGA |
| 52 |
#include <X11/Xlib.h> |
| 53 |
#include <X11/Xutil.h> |
| 54 |
#include <X11/extensions/xf86dga.h> |
| 55 |
#endif |
| 56 |
|
| 57 |
#if ENABLE_MON |
| 58 |
#include "mon.h" |
| 59 |
#endif |
| 60 |
|
| 61 |
|
| 62 |
// Constants |
| 63 |
const char ROM_FILE_NAME[] = "ROM"; |
| 64 |
|
| 65 |
|
| 66 |
// CPU and FPU type, addressing mode |
| 67 |
int CPUType; |
| 68 |
bool CPUIs68060; |
| 69 |
int FPUType; |
| 70 |
bool TwentyFourBitAddressing; |
| 71 |
|
| 72 |
|
| 73 |
// Global variables |
| 74 |
static char *x_display_name = NULL; // X11 display name |
| 75 |
Display *x_display = NULL; // X11 display handle |
| 76 |
|
| 77 |
static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed |
| 78 |
static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread |
| 79 |
static pthread_t xpram_thread; // XPRAM watchdog |
| 80 |
|
| 81 |
static bool tick_thread_active = false; // Flag: 60Hz thread installed |
| 82 |
static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread |
| 83 |
static pthread_t tick_thread; // 60Hz thread |
| 84 |
static pthread_attr_t tick_thread_attr; // 60Hz thread attributes |
| 85 |
|
| 86 |
static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags |
| 87 |
|
| 88 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 89 |
#define SIG_TIMER SIGRTMIN |
| 90 |
static struct sigaction timer_sa; // sigaction used for timer |
| 91 |
static timer_t timer; // 60Hz timer |
| 92 |
#endif |
| 93 |
|
| 94 |
#if ENABLE_MON |
| 95 |
static struct sigaction sigint_sa; // sigaction for SIGINT handler |
| 96 |
static void sigint_handler(...); |
| 97 |
#endif |
| 98 |
|
| 99 |
|
| 100 |
// Prototypes |
| 101 |
static void *xpram_func(void *arg); |
| 102 |
static void *tick_func(void *arg); |
| 103 |
static void one_tick(...); |
| 104 |
|
| 105 |
|
| 106 |
/* |
| 107 |
* Ersatz functions |
| 108 |
*/ |
| 109 |
|
| 110 |
extern "C" { |
| 111 |
|
| 112 |
#ifndef HAVE_STRDUP |
| 113 |
char *strdup(const char *s) |
| 114 |
{ |
| 115 |
char *n = (char *)malloc(strlen(s) + 1); |
| 116 |
strcpy(n, s); |
| 117 |
return n; |
| 118 |
} |
| 119 |
#endif |
| 120 |
|
| 121 |
} |
| 122 |
|
| 123 |
|
| 124 |
/* |
| 125 |
* Main program |
| 126 |
*/ |
| 127 |
|
| 128 |
int main(int argc, char **argv) |
| 129 |
{ |
| 130 |
// Initialize variables |
| 131 |
RAMBaseHost = NULL; |
| 132 |
ROMBaseHost = NULL; |
| 133 |
srand(time(NULL)); |
| 134 |
tzset(); |
| 135 |
|
| 136 |
// Print some info |
| 137 |
printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
| 138 |
printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
| 139 |
|
| 140 |
// Parse arguments |
| 141 |
for (int i=1; i<argc; i++) { |
| 142 |
if (strcmp(argv[i], "-display") == 0 && ++i < argc) |
| 143 |
x_display_name = argv[i]; |
| 144 |
else if (strcmp(argv[i], "-break") == 0 && ++i < argc) |
| 145 |
ROMBreakpoint = strtol(argv[i], NULL, 0); |
| 146 |
else if (strcmp(argv[i], "-rominfo") == 0) |
| 147 |
PrintROMInfo = true; |
| 148 |
} |
| 149 |
|
| 150 |
// Open display |
| 151 |
x_display = XOpenDisplay(x_display_name); |
| 152 |
if (x_display == NULL) { |
| 153 |
char str[256]; |
| 154 |
sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name)); |
| 155 |
ErrorAlert(str); |
| 156 |
QuitEmulator(); |
| 157 |
} |
| 158 |
|
| 159 |
#if ENABLE_XF86_DGA && !ENABLE_MON |
| 160 |
// Fork out, so we can return from fullscreen mode when things get ugly |
| 161 |
XF86DGAForkApp(DefaultScreen(x_display)); |
| 162 |
#endif |
| 163 |
|
| 164 |
#if ENABLE_GTK |
| 165 |
// Init GTK |
| 166 |
gtk_set_locale(); |
| 167 |
gtk_init(&argc, &argv); |
| 168 |
#endif |
| 169 |
|
| 170 |
// Read preferences |
| 171 |
PrefsInit(); |
| 172 |
|
| 173 |
// Init system routines |
| 174 |
SysInit(); |
| 175 |
|
| 176 |
// Show preferences editor |
| 177 |
if (!PrefsFindBool("nogui")) |
| 178 |
if (!PrefsEditor()) |
| 179 |
QuitEmulator(); |
| 180 |
|
| 181 |
// Create area for Mac RAM |
| 182 |
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
| 183 |
if (RAMSize < 1024*1024) { |
| 184 |
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
| 185 |
RAMSize = 1024*1024; |
| 186 |
} |
| 187 |
RAMBaseHost = new uint8[RAMSize]; |
| 188 |
|
| 189 |
// Create area for Mac ROM |
| 190 |
ROMBaseHost = new uint8[0x100000]; |
| 191 |
|
| 192 |
// Get rom file path from preferences |
| 193 |
const char *rom_path = PrefsFindString("rom"); |
| 194 |
|
| 195 |
// Load Mac ROM |
| 196 |
int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY); |
| 197 |
if (rom_fd < 0) { |
| 198 |
ErrorAlert(GetString(STR_NO_ROM_FILE_ERR)); |
| 199 |
QuitEmulator(); |
| 200 |
} |
| 201 |
printf(GetString(STR_READING_ROM_FILE)); |
| 202 |
ROMSize = lseek(rom_fd, 0, SEEK_END); |
| 203 |
if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) { |
| 204 |
ErrorAlert(GetString(STR_ROM_SIZE_ERR)); |
| 205 |
close(rom_fd); |
| 206 |
QuitEmulator(); |
| 207 |
} |
| 208 |
lseek(rom_fd, 0, SEEK_SET); |
| 209 |
if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) { |
| 210 |
ErrorAlert(GetString(STR_ROM_FILE_READ_ERR)); |
| 211 |
close(rom_fd); |
| 212 |
QuitEmulator(); |
| 213 |
} |
| 214 |
|
| 215 |
// Initialize everything |
| 216 |
if (!InitAll()) |
| 217 |
QuitEmulator(); |
| 218 |
|
| 219 |
// Start XPRAM watchdog thread |
| 220 |
xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0); |
| 221 |
|
| 222 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 223 |
// Start 60Hz timer |
| 224 |
sigemptyset(&timer_sa.sa_mask); |
| 225 |
timer_sa.sa_flags = SA_SIGINFO | SA_RESTART; |
| 226 |
timer_sa.sa_sigaction = one_tick; |
| 227 |
if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) { |
| 228 |
printf("FATAL: cannot set up timer signal handler\n"); |
| 229 |
QuitEmulator(); |
| 230 |
} |
| 231 |
struct sigevent timer_event; |
| 232 |
timer_event.sigev_notify = SIGEV_SIGNAL; |
| 233 |
timer_event.sigev_signo = SIG_TIMER; |
| 234 |
if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) { |
| 235 |
printf("FATAL: cannot create timer\n"); |
| 236 |
QuitEmulator(); |
| 237 |
} |
| 238 |
struct itimerspec req; |
| 239 |
req.it_value.tv_sec = 0; |
| 240 |
req.it_value.tv_nsec = 16625000; |
| 241 |
req.it_interval.tv_sec = 0; |
| 242 |
req.it_interval.tv_nsec = 16625000; |
| 243 |
if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) { |
| 244 |
printf("FATAL: cannot start timer\n"); |
| 245 |
QuitEmulator(); |
| 246 |
} |
| 247 |
|
| 248 |
#else |
| 249 |
|
| 250 |
// Start 60Hz thread |
| 251 |
pthread_attr_init(&tick_thread_attr); |
| 252 |
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
| 253 |
if (geteuid() == 0) { |
| 254 |
pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED); |
| 255 |
pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO); |
| 256 |
struct sched_param fifo_param; |
| 257 |
fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2; |
| 258 |
pthread_attr_setschedparam(&tick_thread_attr, &fifo_param); |
| 259 |
} |
| 260 |
#endif |
| 261 |
tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0); |
| 262 |
if (!tick_thread_active) { |
| 263 |
printf("FATAL: cannot create tick thread\n"); |
| 264 |
QuitEmulator(); |
| 265 |
} |
| 266 |
#endif |
| 267 |
|
| 268 |
#if ENABLE_MON |
| 269 |
// Setup SIGINT handler to enter mon |
| 270 |
sigemptyset(&sigint_sa.sa_mask); |
| 271 |
sigint_sa.sa_flags = 0; |
| 272 |
sigint_sa.sa_handler = sigint_handler; |
| 273 |
sigaction(SIGINT, &sigint_sa, NULL); |
| 274 |
#endif |
| 275 |
|
| 276 |
// Start 68k and jump to ROM boot routine |
| 277 |
Start680x0(); |
| 278 |
|
| 279 |
QuitEmulator(); |
| 280 |
return 0; |
| 281 |
} |
| 282 |
|
| 283 |
|
| 284 |
/* |
| 285 |
* Quit emulator |
| 286 |
*/ |
| 287 |
|
| 288 |
void QuitEmulator(void) |
| 289 |
{ |
| 290 |
// Exit 680x0 emulation |
| 291 |
Exit680x0(); |
| 292 |
|
| 293 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 294 |
// Stop 60Hz timer |
| 295 |
timer_delete(timer); |
| 296 |
#else |
| 297 |
// Stop 60Hz thread |
| 298 |
if (tick_thread_active) { |
| 299 |
tick_thread_cancel = true; |
| 300 |
#ifdef HAVE_PTHREAD_CANCEL |
| 301 |
pthread_cancel(tick_thread); |
| 302 |
#endif |
| 303 |
pthread_join(tick_thread, NULL); |
| 304 |
} |
| 305 |
#endif |
| 306 |
|
| 307 |
// Stop XPRAM watchdog thread |
| 308 |
if (xpram_thread_active) { |
| 309 |
xpram_thread_cancel = true; |
| 310 |
#ifdef HAVE_PTHREAD_CANCEL |
| 311 |
pthread_cancel(xpram_thread); |
| 312 |
#endif |
| 313 |
pthread_join(xpram_thread, NULL); |
| 314 |
} |
| 315 |
|
| 316 |
// Deinitialize everything |
| 317 |
ExitAll(); |
| 318 |
|
| 319 |
// Delete ROM area |
| 320 |
delete[] ROMBaseHost; |
| 321 |
|
| 322 |
// Delete RAM area |
| 323 |
delete[] RAMBaseHost; |
| 324 |
|
| 325 |
// Exit system routines |
| 326 |
SysExit(); |
| 327 |
|
| 328 |
// Exit preferences |
| 329 |
PrefsExit(); |
| 330 |
|
| 331 |
// Close X11 server connection |
| 332 |
if (x_display) |
| 333 |
XCloseDisplay(x_display); |
| 334 |
|
| 335 |
exit(0); |
| 336 |
} |
| 337 |
|
| 338 |
|
| 339 |
/* |
| 340 |
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
| 341 |
* or a dynamically recompiling emulator) |
| 342 |
*/ |
| 343 |
|
| 344 |
#if EMULATED_68K |
| 345 |
void FlushCodeCache(void *start, uint32 size) |
| 346 |
{ |
| 347 |
} |
| 348 |
#endif |
| 349 |
|
| 350 |
|
| 351 |
/* |
| 352 |
* SIGINT handler, enters mon |
| 353 |
*/ |
| 354 |
|
| 355 |
#if ENABLE_MON |
| 356 |
extern void m68k_dumpstate(uaecptr *nextpc); |
| 357 |
static void sigint_handler(...) |
| 358 |
{ |
| 359 |
uaecptr nextpc; |
| 360 |
m68k_dumpstate(&nextpc); |
| 361 |
char *arg[2] = {"rmon", NULL}; |
| 362 |
mon(1, arg); |
| 363 |
QuitEmulator(); |
| 364 |
} |
| 365 |
#endif |
| 366 |
|
| 367 |
|
| 368 |
/* |
| 369 |
* Interrupt flags (must be handled atomically!) |
| 370 |
*/ |
| 371 |
|
| 372 |
uint32 InterruptFlags = 0; |
| 373 |
|
| 374 |
void SetInterruptFlag(uint32 flag) |
| 375 |
{ |
| 376 |
pthread_mutex_lock(&intflag_lock); |
| 377 |
InterruptFlags |= flag; |
| 378 |
pthread_mutex_unlock(&intflag_lock); |
| 379 |
} |
| 380 |
|
| 381 |
void ClearInterruptFlag(uint32 flag) |
| 382 |
{ |
| 383 |
pthread_mutex_lock(&intflag_lock); |
| 384 |
InterruptFlags &= ~flag; |
| 385 |
pthread_mutex_unlock(&intflag_lock); |
| 386 |
} |
| 387 |
|
| 388 |
|
| 389 |
/* |
| 390 |
* 60Hz thread (really 60.15Hz) |
| 391 |
*/ |
| 392 |
|
| 393 |
static void one_tick(...) |
| 394 |
{ |
| 395 |
static int tick_counter = 0; |
| 396 |
|
| 397 |
// Pseudo Mac 1Hz interrupt, update local time |
| 398 |
if (++tick_counter > 60) { |
| 399 |
tick_counter = 0; |
| 400 |
WriteMacInt32(0x20c, TimerDateTime()); |
| 401 |
} |
| 402 |
|
| 403 |
// Trigger 60Hz interrupt |
| 404 |
if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) { |
| 405 |
SetInterruptFlag(INTFLAG_60HZ); |
| 406 |
TriggerInterrupt(); |
| 407 |
} |
| 408 |
} |
| 409 |
|
| 410 |
static void *tick_func(void *arg) |
| 411 |
{ |
| 412 |
while (!tick_thread_cancel) { |
| 413 |
|
| 414 |
// Wait |
| 415 |
#ifdef HAVE_NANOSLEEP |
| 416 |
struct timespec req = {0, 16625000}; |
| 417 |
nanosleep(&req, NULL); |
| 418 |
#else |
| 419 |
usleep(16625); |
| 420 |
#endif |
| 421 |
|
| 422 |
// Action |
| 423 |
one_tick(); |
| 424 |
} |
| 425 |
return NULL; |
| 426 |
} |
| 427 |
|
| 428 |
|
| 429 |
/* |
| 430 |
* XPRAM watchdog thread (saves XPRAM every minute) |
| 431 |
*/ |
| 432 |
|
| 433 |
void *xpram_func(void *arg) |
| 434 |
{ |
| 435 |
uint8 last_xpram[256]; |
| 436 |
memcpy(last_xpram, XPRAM, 256); |
| 437 |
|
| 438 |
while (!xpram_thread_cancel) { |
| 439 |
for (int i=0; i<60 && !xpram_thread_cancel; i++) { |
| 440 |
#ifdef HAVE_NANOSLEEP |
| 441 |
struct timespec req = {1, 0}; |
| 442 |
nanosleep(&req, NULL); |
| 443 |
#else |
| 444 |
usleep(1000000); |
| 445 |
#endif |
| 446 |
} |
| 447 |
if (memcmp(last_xpram, XPRAM, 256)) { |
| 448 |
memcpy(last_xpram, XPRAM, 256); |
| 449 |
SaveXPRAM(); |
| 450 |
} |
| 451 |
} |
| 452 |
return NULL; |
| 453 |
} |
| 454 |
|
| 455 |
|
| 456 |
/* |
| 457 |
* Display alert |
| 458 |
*/ |
| 459 |
|
| 460 |
#if ENABLE_GTK |
| 461 |
static void dl_destroyed(void) |
| 462 |
{ |
| 463 |
gtk_main_quit(); |
| 464 |
} |
| 465 |
|
| 466 |
static void dl_quit(GtkWidget *dialog) |
| 467 |
{ |
| 468 |
gtk_widget_destroy(dialog); |
| 469 |
} |
| 470 |
|
| 471 |
void display_alert(int title_id, int prefix_id, int button_id, const char *text) |
| 472 |
{ |
| 473 |
char str[256]; |
| 474 |
sprintf(str, GetString(prefix_id), text); |
| 475 |
|
| 476 |
GtkWidget *dialog = gtk_dialog_new(); |
| 477 |
gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id)); |
| 478 |
gtk_container_border_width(GTK_CONTAINER(dialog), 5); |
| 479 |
gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150); |
| 480 |
gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL); |
| 481 |
|
| 482 |
GtkWidget *label = gtk_label_new(str); |
| 483 |
gtk_widget_show(label); |
| 484 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0); |
| 485 |
|
| 486 |
GtkWidget *button = gtk_button_new_with_label(GetString(button_id)); |
| 487 |
gtk_widget_show(button); |
| 488 |
gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog)); |
| 489 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0); |
| 490 |
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT); |
| 491 |
gtk_widget_grab_default(button); |
| 492 |
gtk_widget_show(dialog); |
| 493 |
|
| 494 |
gtk_main(); |
| 495 |
} |
| 496 |
#endif |
| 497 |
|
| 498 |
|
| 499 |
/* |
| 500 |
* Display error alert |
| 501 |
*/ |
| 502 |
|
| 503 |
void ErrorAlert(const char *text) |
| 504 |
{ |
| 505 |
#if ENABLE_GTK |
| 506 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
| 507 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
| 508 |
return; |
| 509 |
} |
| 510 |
VideoQuitFullScreen(); |
| 511 |
display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text); |
| 512 |
#else |
| 513 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
| 514 |
#endif |
| 515 |
} |
| 516 |
|
| 517 |
|
| 518 |
/* |
| 519 |
* Display warning alert |
| 520 |
*/ |
| 521 |
|
| 522 |
void WarningAlert(const char *text) |
| 523 |
{ |
| 524 |
#if ENABLE_GTK |
| 525 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
| 526 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 527 |
return; |
| 528 |
} |
| 529 |
display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text); |
| 530 |
#else |
| 531 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 532 |
#endif |
| 533 |
} |
| 534 |
|
| 535 |
|
| 536 |
/* |
| 537 |
* Display choice alert |
| 538 |
*/ |
| 539 |
|
| 540 |
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
| 541 |
{ |
| 542 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 543 |
return false; //!! |
| 544 |
} |
