| 1 |
/* |
| 2 |
* main_unix.cpp - Startup code for Unix |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2004 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 <signal.h> |
| 26 |
#include <errno.h> |
| 27 |
#include <X11/Xlib.h> |
| 28 |
|
| 29 |
#ifdef HAVE_PTHREADS |
| 30 |
# include <pthread.h> |
| 31 |
#endif |
| 32 |
|
| 33 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 34 |
# include <sys/mman.h> |
| 35 |
#endif |
| 36 |
|
| 37 |
#if !EMULATED_68K && defined(__NetBSD__) |
| 38 |
# include <m68k/sync_icache.h> |
| 39 |
# include <m68k/frame.h> |
| 40 |
# include <sys/param.h> |
| 41 |
# include <sys/sysctl.h> |
| 42 |
struct sigstate { |
| 43 |
int ss_flags; |
| 44 |
struct frame ss_frame; |
| 45 |
struct fpframe ss_fpstate; |
| 46 |
}; |
| 47 |
# define SS_FPSTATE 0x02 |
| 48 |
# define SS_USERREGS 0x04 |
| 49 |
#endif |
| 50 |
|
| 51 |
#ifdef ENABLE_GTK |
| 52 |
# include <gtk/gtk.h> |
| 53 |
# include <gdk/gdk.h> |
| 54 |
# ifdef HAVE_GNOMEUI |
| 55 |
# include <gnome.h> |
| 56 |
# endif |
| 57 |
#endif |
| 58 |
|
| 59 |
#ifdef ENABLE_XF86_DGA |
| 60 |
# include <X11/Xutil.h> |
| 61 |
# include <X11/extensions/xf86dga.h> |
| 62 |
#endif |
| 63 |
|
| 64 |
#include <string> |
| 65 |
using std::string; |
| 66 |
|
| 67 |
#include "cpu_emulation.h" |
| 68 |
#include "sys.h" |
| 69 |
#include "rom_patches.h" |
| 70 |
#include "xpram.h" |
| 71 |
#include "timer.h" |
| 72 |
#include "video.h" |
| 73 |
#include "emul_op.h" |
| 74 |
#include "prefs.h" |
| 75 |
#include "prefs_editor.h" |
| 76 |
#include "macos_util.h" |
| 77 |
#include "user_strings.h" |
| 78 |
#include "version.h" |
| 79 |
#include "main.h" |
| 80 |
#include "vm_alloc.h" |
| 81 |
#include "sigsegv.h" |
| 82 |
|
| 83 |
#if USE_JIT |
| 84 |
extern void flush_icache_range(uint32 start, uint32 size); // from compemu_support.cpp |
| 85 |
#endif |
| 86 |
|
| 87 |
#ifdef ENABLE_MON |
| 88 |
# include "mon.h" |
| 89 |
#endif |
| 90 |
|
| 91 |
#define DEBUG 0 |
| 92 |
#include "debug.h" |
| 93 |
|
| 94 |
|
| 95 |
// Constants |
| 96 |
const char ROM_FILE_NAME[] = "ROM"; |
| 97 |
#if !EMULATED_68K |
| 98 |
const int SIG_STACK_SIZE = SIGSTKSZ; // Size of signal stack |
| 99 |
#endif |
| 100 |
const int SCRATCH_MEM_SIZE = 0x10000; // Size of scratch memory area |
| 101 |
|
| 102 |
|
| 103 |
#if !EMULATED_68K |
| 104 |
// RAM and ROM pointers |
| 105 |
uint32 RAMBaseMac; // RAM base (Mac address space) |
| 106 |
uint8 *RAMBaseHost; // RAM base (host address space) |
| 107 |
uint32 RAMSize; // Size of RAM |
| 108 |
uint32 ROMBaseMac; // ROM base (Mac address space) |
| 109 |
uint8 *ROMBaseHost; // ROM base (host address space) |
| 110 |
uint32 ROMSize; // Size of ROM |
| 111 |
#endif |
| 112 |
|
| 113 |
|
| 114 |
// CPU and FPU type, addressing mode |
| 115 |
int CPUType; |
| 116 |
bool CPUIs68060; |
| 117 |
int FPUType; |
| 118 |
bool TwentyFourBitAddressing; |
| 119 |
|
| 120 |
|
| 121 |
// Global variables |
| 122 |
char *x_display_name = NULL; // X11 display name |
| 123 |
Display *x_display = NULL; // X11 display handle |
| 124 |
|
| 125 |
static uint8 last_xpram[XPRAM_SIZE]; // Buffer for monitoring XPRAM changes |
| 126 |
|
| 127 |
#ifdef HAVE_PTHREADS |
| 128 |
#if !EMULATED_68K |
| 129 |
static pthread_t emul_thread; // Handle of MacOS emulation thread (main thread) |
| 130 |
#endif |
| 131 |
|
| 132 |
static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed |
| 133 |
static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread |
| 134 |
static pthread_t xpram_thread; // XPRAM watchdog |
| 135 |
|
| 136 |
static bool tick_thread_active = false; // Flag: 60Hz thread installed |
| 137 |
static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread |
| 138 |
static pthread_t tick_thread; // 60Hz thread |
| 139 |
static pthread_attr_t tick_thread_attr; // 60Hz thread attributes |
| 140 |
|
| 141 |
static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags |
| 142 |
#define LOCK_INTFLAGS pthread_mutex_lock(&intflag_lock) |
| 143 |
#define UNLOCK_INTFLAGS pthread_mutex_unlock(&intflag_lock) |
| 144 |
|
| 145 |
#else |
| 146 |
|
| 147 |
#define LOCK_INTFLAGS |
| 148 |
#define UNLOCK_INTFLAGS |
| 149 |
|
| 150 |
#endif |
| 151 |
|
| 152 |
#if !EMULATED_68K |
| 153 |
#define SIG_IRQ SIGUSR1 |
| 154 |
static struct sigaction sigirq_sa; // Virtual 68k interrupt signal |
| 155 |
static struct sigaction sigill_sa; // Illegal instruction |
| 156 |
static void *sig_stack = NULL; // Stack for signal handlers |
| 157 |
uint16 EmulatedSR; // Emulated bits of SR (supervisor bit and interrupt mask) |
| 158 |
#endif |
| 159 |
|
| 160 |
#if USE_SCRATCHMEM_SUBTERFUGE |
| 161 |
uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes |
| 162 |
#endif |
| 163 |
|
| 164 |
#if !defined(HAVE_PTHREADS) |
| 165 |
static struct sigaction timer_sa; // sigaction used for timer |
| 166 |
|
| 167 |
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 168 |
#define SIG_TIMER SIGRTMIN |
| 169 |
static timer_t timer; // 60Hz timer |
| 170 |
#endif |
| 171 |
#endif // !HAVE_PTHREADS |
| 172 |
|
| 173 |
#ifdef ENABLE_MON |
| 174 |
static struct sigaction sigint_sa; // sigaction for SIGINT handler |
| 175 |
static void sigint_handler(...); |
| 176 |
#endif |
| 177 |
|
| 178 |
#if REAL_ADDRESSING |
| 179 |
static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped |
| 180 |
#endif |
| 181 |
|
| 182 |
|
| 183 |
// Prototypes |
| 184 |
static void *xpram_func(void *arg); |
| 185 |
static void *tick_func(void *arg); |
| 186 |
static void one_tick(...); |
| 187 |
#if !EMULATED_68K |
| 188 |
static void sigirq_handler(int sig, int code, struct sigcontext *scp); |
| 189 |
static void sigill_handler(int sig, int code, struct sigcontext *scp); |
| 190 |
extern "C" void EmulOpTrampoline(void); |
| 191 |
#endif |
| 192 |
|
| 193 |
|
| 194 |
/* |
| 195 |
* Ersatz functions |
| 196 |
*/ |
| 197 |
|
| 198 |
extern "C" { |
| 199 |
|
| 200 |
#ifndef HAVE_STRDUP |
| 201 |
char *strdup(const char *s) |
| 202 |
{ |
| 203 |
char *n = (char *)malloc(strlen(s) + 1); |
| 204 |
strcpy(n, s); |
| 205 |
return n; |
| 206 |
} |
| 207 |
#endif |
| 208 |
|
| 209 |
} |
| 210 |
|
| 211 |
|
| 212 |
/* |
| 213 |
* SIGSEGV handler |
| 214 |
*/ |
| 215 |
|
| 216 |
static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
| 217 |
{ |
| 218 |
#if ENABLE_VOSF |
| 219 |
// Handle screen fault |
| 220 |
extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t); |
| 221 |
if (Screen_fault_handler(fault_address, fault_instruction)) |
| 222 |
return SIGSEGV_RETURN_SUCCESS; |
| 223 |
#endif |
| 224 |
|
| 225 |
#ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION |
| 226 |
// Ignore writes to ROM |
| 227 |
if (((uintptr)fault_address - (uintptr)ROMBaseHost) < ROMSize) |
| 228 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 229 |
|
| 230 |
// Ignore all other faults, if requested |
| 231 |
if (PrefsFindBool("ignoresegv")) |
| 232 |
return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
| 233 |
#endif |
| 234 |
|
| 235 |
return SIGSEGV_RETURN_FAILURE; |
| 236 |
} |
| 237 |
|
| 238 |
/* |
| 239 |
* Dump state when everything went wrong after a SEGV |
| 240 |
*/ |
| 241 |
|
| 242 |
static void sigsegv_dump_state(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
| 243 |
{ |
| 244 |
fprintf(stderr, "Caught SIGSEGV at address %p", fault_address); |
| 245 |
if (fault_instruction != SIGSEGV_INVALID_PC) |
| 246 |
fprintf(stderr, " [IP=%p]", fault_instruction); |
| 247 |
fprintf(stderr, "\n"); |
| 248 |
#if EMULATED_68K |
| 249 |
uaecptr nextpc; |
| 250 |
extern void m68k_dumpstate(uaecptr *nextpc); |
| 251 |
m68k_dumpstate(&nextpc); |
| 252 |
#endif |
| 253 |
#if USE_JIT && JIT_DEBUG |
| 254 |
extern void compiler_dumpstate(void); |
| 255 |
compiler_dumpstate(); |
| 256 |
#endif |
| 257 |
VideoQuitFullScreen(); |
| 258 |
#ifdef ENABLE_MON |
| 259 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 260 |
mon(3, arg); |
| 261 |
QuitEmulator(); |
| 262 |
#endif |
| 263 |
} |
| 264 |
|
| 265 |
|
| 266 |
/* |
| 267 |
* Main program |
| 268 |
*/ |
| 269 |
|
| 270 |
static void usage(const char *prg_name) |
| 271 |
{ |
| 272 |
printf( |
| 273 |
"Usage: %s [OPTION...]\n" |
| 274 |
"\nUnix options:\n" |
| 275 |
" --config FILE\n read/write configuration from/to FILE\n" |
| 276 |
" --display STRING\n X display to use\n" |
| 277 |
" --break ADDRESS\n set ROM breakpoint\n" |
| 278 |
" --rominfo\n dump ROM information\n", prg_name |
| 279 |
); |
| 280 |
LoadPrefs(); // read the prefs file so PrefsPrintUsage() will print the correct default values |
| 281 |
PrefsPrintUsage(); |
| 282 |
exit(0); |
| 283 |
} |
| 284 |
|
| 285 |
int main(int argc, char **argv) |
| 286 |
{ |
| 287 |
char str[256]; |
| 288 |
|
| 289 |
// Initialize variables |
| 290 |
RAMBaseHost = NULL; |
| 291 |
ROMBaseHost = NULL; |
| 292 |
srand(time(NULL)); |
| 293 |
tzset(); |
| 294 |
|
| 295 |
// Print some info |
| 296 |
printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
| 297 |
printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
| 298 |
|
| 299 |
// Parse command line arguments |
| 300 |
for (int i=1; i<argc; i++) { |
| 301 |
if (strcmp(argv[i], "--help") == 0) { |
| 302 |
usage(argv[0]); |
| 303 |
} else if (strcmp(argv[i], "--display") == 0) { |
| 304 |
i++; // don't remove the argument, gtk_init() needs it too |
| 305 |
if (i < argc) |
| 306 |
x_display_name = strdup(argv[i]); |
| 307 |
} else if (strcmp(argv[i], "--break") == 0) { |
| 308 |
argv[i++] = NULL; |
| 309 |
if (i < argc) { |
| 310 |
ROMBreakpoint = strtol(argv[i], NULL, 0); |
| 311 |
argv[i] = NULL; |
| 312 |
} |
| 313 |
} else if (strcmp(argv[i], "--config") == 0) { |
| 314 |
argv[i++] = NULL; |
| 315 |
if (i < argc) { |
| 316 |
extern string UserPrefsPath; // from prefs_unix.cpp |
| 317 |
UserPrefsPath = argv[i]; |
| 318 |
argv[i] = NULL; |
| 319 |
} |
| 320 |
} else if (strcmp(argv[i], "--rominfo") == 0) { |
| 321 |
argv[i] = NULL; |
| 322 |
PrintROMInfo = true; |
| 323 |
} |
| 324 |
} |
| 325 |
|
| 326 |
// Remove processed arguments |
| 327 |
for (int i=1; i<argc; i++) { |
| 328 |
int k; |
| 329 |
for (k=i; k<argc; k++) |
| 330 |
if (argv[k] != NULL) |
| 331 |
break; |
| 332 |
if (k > i) { |
| 333 |
k -= i; |
| 334 |
for (int j=i+k; j<argc; j++) |
| 335 |
argv[j-k] = argv[j]; |
| 336 |
argc -= k; |
| 337 |
} |
| 338 |
} |
| 339 |
|
| 340 |
#ifdef ENABLE_GTK |
| 341 |
#ifdef HAVE_GNOMEUI |
| 342 |
// Init GNOME/GTK |
| 343 |
char version[16]; |
| 344 |
sprintf(version, "%d.%d", VERSION_MAJOR, VERSION_MINOR); |
| 345 |
gnome_init("Basilisk II", version, argc, argv); |
| 346 |
#else |
| 347 |
// Init GTK |
| 348 |
gtk_set_locale(); |
| 349 |
gtk_init(&argc, &argv); |
| 350 |
#endif |
| 351 |
#endif |
| 352 |
|
| 353 |
// Read preferences |
| 354 |
PrefsInit(argc, argv); |
| 355 |
|
| 356 |
// Any command line arguments left? |
| 357 |
for (int i=1; i<argc; i++) { |
| 358 |
if (argv[i][0] == '-') { |
| 359 |
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]); |
| 360 |
usage(argv[0]); |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
// Open display |
| 365 |
x_display = XOpenDisplay(x_display_name); |
| 366 |
if (x_display == NULL) { |
| 367 |
char str[256]; |
| 368 |
sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name)); |
| 369 |
ErrorAlert(str); |
| 370 |
QuitEmulator(); |
| 371 |
} |
| 372 |
|
| 373 |
#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON) |
| 374 |
// Fork out, so we can return from fullscreen mode when things get ugly |
| 375 |
XF86DGAForkApp(DefaultScreen(x_display)); |
| 376 |
#endif |
| 377 |
|
| 378 |
// Init system routines |
| 379 |
SysInit(); |
| 380 |
|
| 381 |
// Show preferences editor |
| 382 |
if (!PrefsFindBool("nogui")) |
| 383 |
if (!PrefsEditor()) |
| 384 |
QuitEmulator(); |
| 385 |
|
| 386 |
// Install the handler for SIGSEGV |
| 387 |
if (!sigsegv_install_handler(sigsegv_handler)) { |
| 388 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno)); |
| 389 |
ErrorAlert(str); |
| 390 |
QuitEmulator(); |
| 391 |
} |
| 392 |
|
| 393 |
// Register dump state function when we got mad after a segfault |
| 394 |
sigsegv_set_dump_state(sigsegv_dump_state); |
| 395 |
|
| 396 |
// Read RAM size |
| 397 |
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
| 398 |
if (RAMSize < 1024*1024) { |
| 399 |
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
| 400 |
RAMSize = 1024*1024; |
| 401 |
} |
| 402 |
|
| 403 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
| 404 |
RAMSize = RAMSize & -getpagesize(); // Round down to page boundary |
| 405 |
#endif |
| 406 |
|
| 407 |
// Initialize VM system |
| 408 |
vm_init(); |
| 409 |
|
| 410 |
#if REAL_ADDRESSING |
| 411 |
// Flag: RAM and ROM are contigously allocated from address 0 |
| 412 |
bool memory_mapped_from_zero = false; |
| 413 |
|
| 414 |
// Under Solaris/SPARC and NetBSD/m68k, Basilisk II is known to crash |
| 415 |
// when trying to map a too big chunk of memory starting at address 0 |
| 416 |
#if defined(OS_solaris) || defined(OS_netbsd) || defined(PAGEZERO_HACK) |
| 417 |
const bool can_map_all_memory = false; |
| 418 |
#else |
| 419 |
const bool can_map_all_memory = true; |
| 420 |
#endif |
| 421 |
|
| 422 |
// Try to allocate all memory from 0x0000, if it is not known to crash |
| 423 |
if (can_map_all_memory && (vm_acquire_fixed(0, RAMSize + 0x100000) == 0)) { |
| 424 |
D(bug("Could allocate RAM and ROM from 0x0000\n")); |
| 425 |
memory_mapped_from_zero = true; |
| 426 |
} |
| 427 |
|
| 428 |
#ifndef PAGEZERO_HACK |
| 429 |
// Otherwise, just create the Low Memory area (0x0000..0x2000) |
| 430 |
else if (vm_acquire_fixed(0, 0x2000) == 0) { |
| 431 |
D(bug("Could allocate the Low Memory globals\n")); |
| 432 |
lm_area_mapped = true; |
| 433 |
} |
| 434 |
|
| 435 |
// Exit on failure |
| 436 |
else { |
| 437 |
sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno)); |
| 438 |
ErrorAlert(str); |
| 439 |
QuitEmulator(); |
| 440 |
} |
| 441 |
#endif |
| 442 |
#endif /* REAL_ADDRESSING */ |
| 443 |
|
| 444 |
// Create areas for Mac RAM and ROM |
| 445 |
#if REAL_ADDRESSING |
| 446 |
if (memory_mapped_from_zero) { |
| 447 |
RAMBaseHost = (uint8 *)0; |
| 448 |
ROMBaseHost = RAMBaseHost + RAMSize; |
| 449 |
} |
| 450 |
else |
| 451 |
#endif |
| 452 |
{ |
| 453 |
RAMBaseHost = (uint8 *)vm_acquire(RAMSize); |
| 454 |
ROMBaseHost = (uint8 *)vm_acquire(0x100000); |
| 455 |
if (RAMBaseHost == VM_MAP_FAILED || ROMBaseHost == VM_MAP_FAILED) { |
| 456 |
ErrorAlert(STR_NO_MEM_ERR); |
| 457 |
QuitEmulator(); |
| 458 |
} |
| 459 |
} |
| 460 |
|
| 461 |
#if USE_SCRATCHMEM_SUBTERFUGE |
| 462 |
// Allocate scratch memory |
| 463 |
ScratchMem = (uint8 *)vm_acquire(SCRATCH_MEM_SIZE); |
| 464 |
if (ScratchMem == VM_MAP_FAILED) { |
| 465 |
ErrorAlert(STR_NO_MEM_ERR); |
| 466 |
QuitEmulator(); |
| 467 |
} |
| 468 |
ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block |
| 469 |
#endif |
| 470 |
|
| 471 |
#if DIRECT_ADDRESSING |
| 472 |
// RAMBaseMac shall always be zero |
| 473 |
MEMBaseDiff = (uintptr)RAMBaseHost; |
| 474 |
RAMBaseMac = 0; |
| 475 |
ROMBaseMac = Host2MacAddr(ROMBaseHost); |
| 476 |
#endif |
| 477 |
#if REAL_ADDRESSING |
| 478 |
RAMBaseMac = (uint32)RAMBaseHost; |
| 479 |
ROMBaseMac = (uint32)ROMBaseHost; |
| 480 |
#endif |
| 481 |
D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac)); |
| 482 |
D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac)); |
| 483 |
|
| 484 |
// Get rom file path from preferences |
| 485 |
const char *rom_path = PrefsFindString("rom"); |
| 486 |
|
| 487 |
// Load Mac ROM |
| 488 |
int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY); |
| 489 |
if (rom_fd < 0) { |
| 490 |
ErrorAlert(STR_NO_ROM_FILE_ERR); |
| 491 |
QuitEmulator(); |
| 492 |
} |
| 493 |
printf(GetString(STR_READING_ROM_FILE)); |
| 494 |
ROMSize = lseek(rom_fd, 0, SEEK_END); |
| 495 |
if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) { |
| 496 |
ErrorAlert(STR_ROM_SIZE_ERR); |
| 497 |
close(rom_fd); |
| 498 |
QuitEmulator(); |
| 499 |
} |
| 500 |
lseek(rom_fd, 0, SEEK_SET); |
| 501 |
if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) { |
| 502 |
ErrorAlert(STR_ROM_FILE_READ_ERR); |
| 503 |
close(rom_fd); |
| 504 |
QuitEmulator(); |
| 505 |
} |
| 506 |
|
| 507 |
#if !EMULATED_68K |
| 508 |
// Get CPU model |
| 509 |
int mib[2] = {CTL_HW, HW_MODEL}; |
| 510 |
char *model; |
| 511 |
size_t model_len; |
| 512 |
sysctl(mib, 2, NULL, &model_len, NULL, 0); |
| 513 |
model = (char *)malloc(model_len); |
| 514 |
sysctl(mib, 2, model, &model_len, NULL, 0); |
| 515 |
D(bug("Model: %s\n", model)); |
| 516 |
|
| 517 |
// Set CPU and FPU type |
| 518 |
CPUIs68060 = false; |
| 519 |
if (strstr(model, "020")) |
| 520 |
CPUType = 2; |
| 521 |
else if (strstr(model, "030")) |
| 522 |
CPUType = 3; |
| 523 |
else if (strstr(model, "040")) |
| 524 |
CPUType = 4; |
| 525 |
else if (strstr(model, "060")) { |
| 526 |
CPUType = 4; |
| 527 |
CPUIs68060 = true; |
| 528 |
} else { |
| 529 |
printf("WARNING: Cannot detect CPU type, assuming 68020\n"); |
| 530 |
CPUType = 2; |
| 531 |
} |
| 532 |
FPUType = 1; // NetBSD has an FPU emulation, so the FPU ought to be available at all times |
| 533 |
TwentyFourBitAddressing = false; |
| 534 |
#endif |
| 535 |
|
| 536 |
// Initialize everything |
| 537 |
if (!InitAll()) |
| 538 |
QuitEmulator(); |
| 539 |
D(bug("Initialization complete\n")); |
| 540 |
|
| 541 |
#if !EMULATED_68K |
| 542 |
// (Virtual) supervisor mode, disable interrupts |
| 543 |
EmulatedSR = 0x2700; |
| 544 |
|
| 545 |
#ifdef HAVE_PTHREADS |
| 546 |
// Get handle of main thread |
| 547 |
emul_thread = pthread_self(); |
| 548 |
#endif |
| 549 |
|
| 550 |
// Create and install stack for signal handlers |
| 551 |
sig_stack = malloc(SIG_STACK_SIZE); |
| 552 |
D(bug("Signal stack at %p\n", sig_stack)); |
| 553 |
if (sig_stack == NULL) { |
| 554 |
ErrorAlert(STR_NOT_ENOUGH_MEMORY_ERR); |
| 555 |
QuitEmulator(); |
| 556 |
} |
| 557 |
stack_t new_stack; |
| 558 |
new_stack.ss_sp = sig_stack; |
| 559 |
new_stack.ss_flags = 0; |
| 560 |
new_stack.ss_size = SIG_STACK_SIZE; |
| 561 |
if (sigaltstack(&new_stack, NULL) < 0) { |
| 562 |
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno)); |
| 563 |
ErrorAlert(str); |
| 564 |
QuitEmulator(); |
| 565 |
} |
| 566 |
|
| 567 |
// Install SIGILL handler for emulating privileged instructions and |
| 568 |
// executing A-Trap and EMUL_OP opcodes |
| 569 |
sigemptyset(&sigill_sa.sa_mask); // Block virtual 68k interrupts during SIGILL handling |
| 570 |
sigaddset(&sigill_sa.sa_mask, SIG_IRQ); |
| 571 |
sigaddset(&sigill_sa.sa_mask, SIGALRM); |
| 572 |
sigill_sa.sa_handler = (void (*)(int))sigill_handler; |
| 573 |
sigill_sa.sa_flags = SA_ONSTACK; |
| 574 |
if (sigaction(SIGILL, &sigill_sa, NULL) < 0) { |
| 575 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno)); |
| 576 |
ErrorAlert(str); |
| 577 |
QuitEmulator(); |
| 578 |
} |
| 579 |
|
| 580 |
// Install virtual 68k interrupt signal handler |
| 581 |
sigemptyset(&sigirq_sa.sa_mask); |
| 582 |
sigaddset(&sigirq_sa.sa_mask, SIGALRM); |
| 583 |
sigirq_sa.sa_handler = (void (*)(int))sigirq_handler; |
| 584 |
sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART; |
| 585 |
if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) { |
| 586 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno)); |
| 587 |
ErrorAlert(str); |
| 588 |
QuitEmulator(); |
| 589 |
} |
| 590 |
#endif |
| 591 |
|
| 592 |
#ifdef ENABLE_MON |
| 593 |
// Setup SIGINT handler to enter mon |
| 594 |
sigemptyset(&sigint_sa.sa_mask); |
| 595 |
sigint_sa.sa_handler = (void (*)(int))sigint_handler; |
| 596 |
sigint_sa.sa_flags = 0; |
| 597 |
sigaction(SIGINT, &sigint_sa, NULL); |
| 598 |
#endif |
| 599 |
|
| 600 |
#if defined(HAVE_PTHREADS) |
| 601 |
|
| 602 |
// POSIX threads available, start 60Hz thread |
| 603 |
Set_pthread_attr(&tick_thread_attr, 0); |
| 604 |
tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0); |
| 605 |
if (!tick_thread_active) { |
| 606 |
sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno)); |
| 607 |
ErrorAlert(str); |
| 608 |
QuitEmulator(); |
| 609 |
} |
| 610 |
D(bug("60Hz thread started\n")); |
| 611 |
|
| 612 |
#elif defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 613 |
|
| 614 |
// POSIX.4 timers and real-time signals available, start 60Hz timer |
| 615 |
sigemptyset(&timer_sa.sa_mask); |
| 616 |
timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick; |
| 617 |
timer_sa.sa_flags = SA_SIGINFO | SA_RESTART; |
| 618 |
if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) { |
| 619 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno)); |
| 620 |
ErrorAlert(str); |
| 621 |
QuitEmulator(); |
| 622 |
} |
| 623 |
struct sigevent timer_event; |
| 624 |
timer_event.sigev_notify = SIGEV_SIGNAL; |
| 625 |
timer_event.sigev_signo = SIG_TIMER; |
| 626 |
if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) { |
| 627 |
sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno)); |
| 628 |
ErrorAlert(str); |
| 629 |
QuitEmulator(); |
| 630 |
} |
| 631 |
struct itimerspec req; |
| 632 |
req.it_value.tv_sec = 0; |
| 633 |
req.it_value.tv_nsec = 16625000; |
| 634 |
req.it_interval.tv_sec = 0; |
| 635 |
req.it_interval.tv_nsec = 16625000; |
| 636 |
if (timer_settime(timer, 0, &req, NULL) < 0) { |
| 637 |
sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno)); |
| 638 |
ErrorAlert(str); |
| 639 |
QuitEmulator(); |
| 640 |
} |
| 641 |
D(bug("60Hz timer started\n")); |
| 642 |
|
| 643 |
#else |
| 644 |
|
| 645 |
// Start 60Hz timer |
| 646 |
sigemptyset(&timer_sa.sa_mask); // Block virtual 68k interrupts during SIGARLM handling |
| 647 |
#if !EMULATED_68K |
| 648 |
sigaddset(&timer_sa.sa_mask, SIG_IRQ); |
| 649 |
#endif |
| 650 |
timer_sa.sa_handler = one_tick; |
| 651 |
timer_sa.sa_flags = SA_ONSTACK | SA_RESTART; |
| 652 |
if (sigaction(SIGALRM, &timer_sa, NULL) < 0) { |
| 653 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno)); |
| 654 |
ErrorAlert(str); |
| 655 |
QuitEmulator(); |
| 656 |
} |
| 657 |
struct itimerval req; |
| 658 |
req.it_interval.tv_sec = req.it_value.tv_sec = 0; |
| 659 |
req.it_interval.tv_usec = req.it_value.tv_usec = 16625; |
| 660 |
setitimer(ITIMER_REAL, &req, NULL); |
| 661 |
|
| 662 |
#endif |
| 663 |
|
| 664 |
#ifdef HAVE_PTHREADS |
| 665 |
// Start XPRAM watchdog thread |
| 666 |
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
| 667 |
xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0); |
| 668 |
D(bug("XPRAM thread started\n")); |
| 669 |
#endif |
| 670 |
|
| 671 |
// Start 68k and jump to ROM boot routine |
| 672 |
D(bug("Starting emulation...\n")); |
| 673 |
Start680x0(); |
| 674 |
|
| 675 |
QuitEmulator(); |
| 676 |
return 0; |
| 677 |
} |
| 678 |
|
| 679 |
|
| 680 |
/* |
| 681 |
* Quit emulator |
| 682 |
*/ |
| 683 |
|
| 684 |
void QuitEmulator(void) |
| 685 |
{ |
| 686 |
D(bug("QuitEmulator\n")); |
| 687 |
|
| 688 |
#if EMULATED_68K |
| 689 |
// Exit 680x0 emulation |
| 690 |
Exit680x0(); |
| 691 |
#endif |
| 692 |
|
| 693 |
#if defined(HAVE_PTHREADS) |
| 694 |
// Stop 60Hz thread |
| 695 |
if (tick_thread_active) { |
| 696 |
tick_thread_cancel = true; |
| 697 |
#ifdef HAVE_PTHREAD_CANCEL |
| 698 |
pthread_cancel(tick_thread); |
| 699 |
#endif |
| 700 |
pthread_join(tick_thread, NULL); |
| 701 |
} |
| 702 |
#elif defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS) |
| 703 |
// Stop 60Hz timer |
| 704 |
timer_delete(timer); |
| 705 |
#else |
| 706 |
struct itimerval req; |
| 707 |
req.it_interval.tv_sec = req.it_value.tv_sec = 0; |
| 708 |
req.it_interval.tv_usec = req.it_value.tv_usec = 0; |
| 709 |
setitimer(ITIMER_REAL, &req, NULL); |
| 710 |
#endif |
| 711 |
|
| 712 |
#ifdef HAVE_PTHREADS |
| 713 |
// Stop XPRAM watchdog thread |
| 714 |
if (xpram_thread_active) { |
| 715 |
xpram_thread_cancel = true; |
| 716 |
#ifdef HAVE_PTHREAD_CANCEL |
| 717 |
pthread_cancel(xpram_thread); |
| 718 |
#endif |
| 719 |
pthread_join(xpram_thread, NULL); |
| 720 |
} |
| 721 |
#endif |
| 722 |
|
| 723 |
// Deinitialize everything |
| 724 |
ExitAll(); |
| 725 |
|
| 726 |
// Free ROM/RAM areas |
| 727 |
if (RAMBaseHost != VM_MAP_FAILED) { |
| 728 |
vm_release(RAMBaseHost, RAMSize); |
| 729 |
RAMBaseHost = NULL; |
| 730 |
} |
| 731 |
if (ROMBaseHost != VM_MAP_FAILED) { |
| 732 |
vm_release(ROMBaseHost, 0x100000); |
| 733 |
ROMBaseHost = NULL; |
| 734 |
} |
| 735 |
|
| 736 |
#if USE_SCRATCHMEM_SUBTERFUGE |
| 737 |
// Delete scratch memory area |
| 738 |
if (ScratchMem != (uint8 *)VM_MAP_FAILED) { |
| 739 |
vm_release((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE); |
| 740 |
ScratchMem = NULL; |
| 741 |
} |
| 742 |
#endif |
| 743 |
|
| 744 |
#if REAL_ADDRESSING |
| 745 |
// Delete Low Memory area |
| 746 |
if (lm_area_mapped) |
| 747 |
vm_release(0, 0x2000); |
| 748 |
#endif |
| 749 |
|
| 750 |
// Exit VM wrappers |
| 751 |
vm_exit(); |
| 752 |
|
| 753 |
// Exit system routines |
| 754 |
SysExit(); |
| 755 |
|
| 756 |
// Exit preferences |
| 757 |
PrefsExit(); |
| 758 |
|
| 759 |
// Close X11 server connection |
| 760 |
if (x_display) |
| 761 |
XCloseDisplay(x_display); |
| 762 |
|
| 763 |
exit(0); |
| 764 |
} |
| 765 |
|
| 766 |
|
| 767 |
/* |
| 768 |
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
| 769 |
* or a dynamically recompiling emulator) |
| 770 |
*/ |
| 771 |
|
| 772 |
void FlushCodeCache(void *start, uint32 size) |
| 773 |
{ |
| 774 |
#if USE_JIT |
| 775 |
if (UseJIT) |
| 776 |
flush_icache_range((uintptr)start, size); |
| 777 |
#endif |
| 778 |
#if !EMULATED_68K && defined(__NetBSD__) |
| 779 |
m68k_sync_icache(start, size); |
| 780 |
#endif |
| 781 |
} |
| 782 |
|
| 783 |
|
| 784 |
/* |
| 785 |
* SIGINT handler, enters mon |
| 786 |
*/ |
| 787 |
|
| 788 |
#ifdef ENABLE_MON |
| 789 |
static void sigint_handler(...) |
| 790 |
{ |
| 791 |
#if EMULATED_68K |
| 792 |
uaecptr nextpc; |
| 793 |
extern void m68k_dumpstate(uaecptr *nextpc); |
| 794 |
m68k_dumpstate(&nextpc); |
| 795 |
#endif |
| 796 |
VideoQuitFullScreen(); |
| 797 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 798 |
mon(3, arg); |
| 799 |
QuitEmulator(); |
| 800 |
} |
| 801 |
#endif |
| 802 |
|
| 803 |
|
| 804 |
#ifdef HAVE_PTHREADS |
| 805 |
/* |
| 806 |
* Pthread configuration |
| 807 |
*/ |
| 808 |
|
| 809 |
void Set_pthread_attr(pthread_attr_t *attr, int priority) |
| 810 |
{ |
| 811 |
pthread_attr_init(attr); |
| 812 |
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING) |
| 813 |
// Some of these only work for superuser |
| 814 |
if (geteuid() == 0) { |
| 815 |
pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED); |
| 816 |
pthread_attr_setschedpolicy(attr, SCHED_FIFO); |
| 817 |
struct sched_param fifo_param; |
| 818 |
fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) + |
| 819 |
sched_get_priority_max(SCHED_FIFO)) / 2 + |
| 820 |
priority); |
| 821 |
pthread_attr_setschedparam(attr, &fifo_param); |
| 822 |
} |
| 823 |
if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) { |
| 824 |
#ifdef PTHREAD_SCOPE_BOUND_NP |
| 825 |
// If system scope is not available (eg. we're not running |
| 826 |
// with CAP_SCHED_MGT capability on an SGI box), try bound |
| 827 |
// scope. It exposes pthread scheduling to the kernel, |
| 828 |
// without setting realtime priority. |
| 829 |
pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP); |
| 830 |
#endif |
| 831 |
} |
| 832 |
#endif |
| 833 |
} |
| 834 |
#endif // HAVE_PTHREADS |
| 835 |
|
| 836 |
|
| 837 |
/* |
| 838 |
* Mutexes |
| 839 |
*/ |
| 840 |
|
| 841 |
#ifdef HAVE_PTHREADS |
| 842 |
|
| 843 |
struct B2_mutex { |
| 844 |
B2_mutex() { |
| 845 |
pthread_mutexattr_t attr; |
| 846 |
pthread_mutexattr_init(&attr); |
| 847 |
// Initialize the mutex for priority inheritance -- |
| 848 |
// required for accurate timing. |
| 849 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL |
| 850 |
pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT); |
| 851 |
#endif |
| 852 |
#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL) |
| 853 |
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL); |
| 854 |
#endif |
| 855 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED |
| 856 |
pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE); |
| 857 |
#endif |
| 858 |
pthread_mutex_init(&m, &attr); |
| 859 |
pthread_mutexattr_destroy(&attr); |
| 860 |
} |
| 861 |
~B2_mutex() { |
| 862 |
pthread_mutex_trylock(&m); // Make sure it's locked before |
| 863 |
pthread_mutex_unlock(&m); // unlocking it. |
| 864 |
pthread_mutex_destroy(&m); |
| 865 |
} |
| 866 |
pthread_mutex_t m; |
| 867 |
}; |
| 868 |
|
| 869 |
B2_mutex *B2_create_mutex(void) |
| 870 |
{ |
| 871 |
return new B2_mutex; |
| 872 |
} |
| 873 |
|
| 874 |
void B2_lock_mutex(B2_mutex *mutex) |
| 875 |
{ |
| 876 |
pthread_mutex_lock(&mutex->m); |
| 877 |
} |
| 878 |
|
| 879 |
void B2_unlock_mutex(B2_mutex *mutex) |
| 880 |
{ |
| 881 |
pthread_mutex_unlock(&mutex->m); |
| 882 |
} |
| 883 |
|
| 884 |
void B2_delete_mutex(B2_mutex *mutex) |
| 885 |
{ |
| 886 |
delete mutex; |
| 887 |
} |
| 888 |
|
| 889 |
#else |
| 890 |
|
| 891 |
struct B2_mutex { |
| 892 |
int dummy; |
| 893 |
}; |
| 894 |
|
| 895 |
B2_mutex *B2_create_mutex(void) |
| 896 |
{ |
| 897 |
return new B2_mutex; |
| 898 |
} |
| 899 |
|
| 900 |
void B2_lock_mutex(B2_mutex *mutex) |
| 901 |
{ |
| 902 |
} |
| 903 |
|
| 904 |
void B2_unlock_mutex(B2_mutex *mutex) |
| 905 |
{ |
| 906 |
} |
| 907 |
|
| 908 |
void B2_delete_mutex(B2_mutex *mutex) |
| 909 |
{ |
| 910 |
delete mutex; |
| 911 |
} |
| 912 |
|
| 913 |
#endif |
| 914 |
|
| 915 |
|
| 916 |
/* |
| 917 |
* Interrupt flags (must be handled atomically!) |
| 918 |
*/ |
| 919 |
|
| 920 |
uint32 InterruptFlags = 0; |
| 921 |
|
| 922 |
#if EMULATED_68K |
| 923 |
void SetInterruptFlag(uint32 flag) |
| 924 |
{ |
| 925 |
LOCK_INTFLAGS; |
| 926 |
InterruptFlags |= flag; |
| 927 |
UNLOCK_INTFLAGS; |
| 928 |
} |
| 929 |
|
| 930 |
void ClearInterruptFlag(uint32 flag) |
| 931 |
{ |
| 932 |
LOCK_INTFLAGS; |
| 933 |
InterruptFlags &= ~flag; |
| 934 |
UNLOCK_INTFLAGS; |
| 935 |
} |
| 936 |
#endif |
| 937 |
|
| 938 |
#if !EMULATED_68K |
| 939 |
void TriggerInterrupt(void) |
| 940 |
{ |
| 941 |
#if defined(HAVE_PTHREADS) |
| 942 |
pthread_kill(emul_thread, SIG_IRQ); |
| 943 |
#else |
| 944 |
raise(SIG_IRQ); |
| 945 |
#endif |
| 946 |
} |
| 947 |
|
| 948 |
void TriggerNMI(void) |
| 949 |
{ |
| 950 |
// not yet supported |
| 951 |
} |
| 952 |
#endif |
| 953 |
|
| 954 |
|
| 955 |
/* |
| 956 |
* XPRAM watchdog thread (saves XPRAM every minute) |
| 957 |
*/ |
| 958 |
|
| 959 |
static void xpram_watchdog(void) |
| 960 |
{ |
| 961 |
if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) { |
| 962 |
memcpy(last_xpram, XPRAM, XPRAM_SIZE); |
| 963 |
SaveXPRAM(); |
| 964 |
} |
| 965 |
} |
| 966 |
|
| 967 |
#ifdef HAVE_PTHREADS |
| 968 |
static void *xpram_func(void *arg) |
| 969 |
{ |
| 970 |
while (!xpram_thread_cancel) { |
| 971 |
for (int i=0; i<60 && !xpram_thread_cancel; i++) |
| 972 |
Delay_usec(999999); // Only wait 1 second so we quit promptly when xpram_thread_cancel becomes true |
| 973 |
xpram_watchdog(); |
| 974 |
} |
| 975 |
return NULL; |
| 976 |
} |
| 977 |
#endif |
| 978 |
|
| 979 |
|
| 980 |
/* |
| 981 |
* 60Hz thread (really 60.15Hz) |
| 982 |
*/ |
| 983 |
|
| 984 |
static void one_second(void) |
| 985 |
{ |
| 986 |
// Pseudo Mac 1Hz interrupt, update local time |
| 987 |
WriteMacInt32(0x20c, TimerDateTime()); |
| 988 |
|
| 989 |
SetInterruptFlag(INTFLAG_1HZ); |
| 990 |
TriggerInterrupt(); |
| 991 |
|
| 992 |
#ifndef HAVE_PTHREADS |
| 993 |
static int second_counter = 0; |
| 994 |
if (++second_counter > 60) { |
| 995 |
second_counter = 0; |
| 996 |
xpram_watchdog(); |
| 997 |
} |
| 998 |
#endif |
| 999 |
} |
| 1000 |
|
| 1001 |
static void one_tick(...) |
| 1002 |
{ |
| 1003 |
static int tick_counter = 0; |
| 1004 |
if (++tick_counter > 60) { |
| 1005 |
tick_counter = 0; |
| 1006 |
one_second(); |
| 1007 |
} |
| 1008 |
|
| 1009 |
#ifndef HAVE_PTHREADS |
| 1010 |
// No threads available, perform video refresh and networking from here |
| 1011 |
VideoRefresh(); |
| 1012 |
SetInterruptFlag(INTFLAG_ETHER); |
| 1013 |
#endif |
| 1014 |
|
| 1015 |
// Trigger 60Hz interrupt |
| 1016 |
if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) { |
| 1017 |
SetInterruptFlag(INTFLAG_60HZ); |
| 1018 |
TriggerInterrupt(); |
| 1019 |
} |
| 1020 |
} |
| 1021 |
|
| 1022 |
#ifdef HAVE_PTHREADS |
| 1023 |
static void *tick_func(void *arg) |
| 1024 |
{ |
| 1025 |
uint64 start = GetTicks_usec(); |
| 1026 |
int64 ticks = 0; |
| 1027 |
uint64 next = GetTicks_usec(); |
| 1028 |
while (!tick_thread_cancel) { |
| 1029 |
one_tick(); |
| 1030 |
next += 16625; |
| 1031 |
int64 delay = next - GetTicks_usec(); |
| 1032 |
if (delay > 0) |
| 1033 |
Delay_usec(delay); |
| 1034 |
else if (delay < -16625) |
| 1035 |
next = GetTicks_usec(); |
| 1036 |
ticks++; |
| 1037 |
} |
| 1038 |
uint64 end = GetTicks_usec(); |
| 1039 |
D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start))); |
| 1040 |
return NULL; |
| 1041 |
} |
| 1042 |
#endif |
| 1043 |
|
| 1044 |
|
| 1045 |
#if !EMULATED_68K |
| 1046 |
/* |
| 1047 |
* Virtual 68k interrupt handler |
| 1048 |
*/ |
| 1049 |
|
| 1050 |
static void sigirq_handler(int sig, int code, struct sigcontext *scp) |
| 1051 |
{ |
| 1052 |
// Interrupts disabled? Then do nothing |
| 1053 |
if (EmulatedSR & 0x0700) |
| 1054 |
return; |
| 1055 |
|
| 1056 |
struct sigstate *state = (struct sigstate *)scp->sc_ap; |
| 1057 |
M68kRegisters *regs = (M68kRegisters *)&state->ss_frame; |
| 1058 |
|
| 1059 |
// Set up interrupt frame on stack |
| 1060 |
uint32 a7 = regs->a[7]; |
| 1061 |
a7 -= 2; |
| 1062 |
WriteMacInt16(a7, 0x64); |
| 1063 |
a7 -= 4; |
| 1064 |
WriteMacInt32(a7, scp->sc_pc); |
| 1065 |
a7 -= 2; |
| 1066 |
WriteMacInt16(a7, scp->sc_ps | EmulatedSR); |
| 1067 |
scp->sc_sp = regs->a[7] = a7; |
| 1068 |
|
| 1069 |
// Set interrupt level |
| 1070 |
EmulatedSR |= 0x2100; |
| 1071 |
|
| 1072 |
// Jump to MacOS interrupt handler on return |
| 1073 |
scp->sc_pc = ReadMacInt32(0x64); |
| 1074 |
} |
| 1075 |
|
| 1076 |
|
| 1077 |
/* |
| 1078 |
* SIGILL handler, for emulation of privileged instructions and executing |
| 1079 |
* A-Trap and EMUL_OP opcodes |
| 1080 |
*/ |
| 1081 |
|
| 1082 |
static void sigill_handler(int sig, int code, struct sigcontext *scp) |
| 1083 |
{ |
| 1084 |
struct sigstate *state = (struct sigstate *)scp->sc_ap; |
| 1085 |
uint16 *pc = (uint16 *)scp->sc_pc; |
| 1086 |
uint16 opcode = *pc; |
| 1087 |
M68kRegisters *regs = (M68kRegisters *)&state->ss_frame; |
| 1088 |
|
| 1089 |
#define INC_PC(n) scp->sc_pc += (n) |
| 1090 |
|
| 1091 |
#define GET_SR (scp->sc_ps | EmulatedSR) |
| 1092 |
|
| 1093 |
#define STORE_SR(v) \ |
| 1094 |
scp->sc_ps = (v) & 0xff; \ |
| 1095 |
EmulatedSR = (v) & 0xe700; \ |
| 1096 |
if (((v) & 0x0700) == 0 && InterruptFlags) \ |
| 1097 |
TriggerInterrupt(); |
| 1098 |
|
| 1099 |
//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR); |
| 1100 |
|
| 1101 |
if ((opcode & 0xf000) == 0xa000) { |
| 1102 |
|
| 1103 |
// A-Line instruction, set up A-Line trap frame on stack |
| 1104 |
uint32 a7 = regs->a[7]; |
| 1105 |
a7 -= 2; |
| 1106 |
WriteMacInt16(a7, 0x28); |
| 1107 |
a7 -= 4; |
| 1108 |
WriteMacInt32(a7, (uint32)pc); |
| 1109 |
a7 -= 2; |
| 1110 |
WriteMacInt16(a7, GET_SR); |
| 1111 |
scp->sc_sp = regs->a[7] = a7; |
| 1112 |
|
| 1113 |
// Jump to MacOS A-Line handler on return |
| 1114 |
scp->sc_pc = ReadMacInt32(0x28); |
| 1115 |
|
| 1116 |
} else if ((opcode & 0xff00) == 0x7100) { |
| 1117 |
|
| 1118 |
// Extended opcode, push registers on user stack |
| 1119 |
uint32 a7 = regs->a[7]; |
| 1120 |
a7 -= 4; |
| 1121 |
WriteMacInt32(a7, (uint32)pc); |
| 1122 |
a7 -= 2; |
| 1123 |
WriteMacInt16(a7, scp->sc_ps); |
| 1124 |
for (int i=7; i>=0; i--) { |
| 1125 |
a7 -= 4; |
| 1126 |
WriteMacInt32(a7, regs->a[i]); |
| 1127 |
} |
| 1128 |
for (int i=7; i>=0; i--) { |
| 1129 |
a7 -= 4; |
| 1130 |
WriteMacInt32(a7, regs->d[i]); |
| 1131 |
} |
| 1132 |
scp->sc_sp = regs->a[7] = a7; |
| 1133 |
|
| 1134 |
// Jump to EmulOp trampoline code on return |
| 1135 |
scp->sc_pc = (uint32)EmulOpTrampoline; |
| 1136 |
|
| 1137 |
} else switch (opcode) { // Emulate privileged instructions |
| 1138 |
|
| 1139 |
case 0x40e7: // move sr,-(sp) |
| 1140 |
regs->a[7] -= 2; |
| 1141 |
WriteMacInt16(regs->a[7], GET_SR); |
| 1142 |
scp->sc_sp = regs->a[7]; |
| 1143 |
INC_PC(2); |
| 1144 |
break; |
| 1145 |
|
| 1146 |
case 0x46df: { // move (sp)+,sr |
| 1147 |
uint16 sr = ReadMacInt16(regs->a[7]); |
| 1148 |
STORE_SR(sr); |
| 1149 |
regs->a[7] += 2; |
| 1150 |
scp->sc_sp = regs->a[7]; |
| 1151 |
INC_PC(2); |
| 1152 |
break; |
| 1153 |
} |
| 1154 |
|
| 1155 |
case 0x007c: { // ori #xxxx,sr |
| 1156 |
uint16 sr = GET_SR | pc[1]; |
| 1157 |
scp->sc_ps = sr & 0xff; // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR |
| 1158 |
EmulatedSR = sr & 0xe700; |
| 1159 |
INC_PC(4); |
| 1160 |
break; |
| 1161 |
} |
| 1162 |
|
| 1163 |
case 0x027c: { // andi #xxxx,sr |
| 1164 |
uint16 sr = GET_SR & pc[1]; |
| 1165 |
STORE_SR(sr); |
| 1166 |
INC_PC(4); |
| 1167 |
break; |
| 1168 |
} |
| 1169 |
|
| 1170 |
case 0x46fc: // move #xxxx,sr |
| 1171 |
STORE_SR(pc[1]); |
| 1172 |
INC_PC(4); |
| 1173 |
break; |
| 1174 |
|
| 1175 |
case 0x46ef: { // move (xxxx,sp),sr |
| 1176 |
uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]); |
| 1177 |
STORE_SR(sr); |
| 1178 |
INC_PC(4); |
| 1179 |
break; |
| 1180 |
} |
| 1181 |
|
| 1182 |
case 0x46d8: // move (a0)+,sr |
| 1183 |
case 0x46d9: { // move (a1)+,sr |
| 1184 |
uint16 sr = ReadMacInt16(regs->a[opcode & 7]); |
| 1185 |
STORE_SR(sr); |
| 1186 |
regs->a[opcode & 7] += 2; |
| 1187 |
INC_PC(2); |
| 1188 |
break; |
| 1189 |
} |
| 1190 |
|
| 1191 |
case 0x40f8: // move sr,xxxx.w |
| 1192 |
WriteMacInt16(pc[1], GET_SR); |
| 1193 |
INC_PC(4); |
| 1194 |
break; |
| 1195 |
|
| 1196 |
case 0x40d0: // move sr,(a0) |
| 1197 |
case 0x40d1: // move sr,(a1) |
| 1198 |
case 0x40d2: // move sr,(a2) |
| 1199 |
case 0x40d3: // move sr,(a3) |
| 1200 |
case 0x40d4: // move sr,(a4) |
| 1201 |
case 0x40d5: // move sr,(a5) |
| 1202 |
case 0x40d6: // move sr,(a6) |
| 1203 |
case 0x40d7: // move sr,(sp) |
| 1204 |
WriteMacInt16(regs->a[opcode & 7], GET_SR); |
| 1205 |
INC_PC(2); |
| 1206 |
break; |
| 1207 |
|
| 1208 |
case 0x40c0: // move sr,d0 |
| 1209 |
case 0x40c1: // move sr,d1 |
| 1210 |
case 0x40c2: // move sr,d2 |
| 1211 |
case 0x40c3: // move sr,d3 |
| 1212 |
case 0x40c4: // move sr,d4 |
| 1213 |
case 0x40c5: // move sr,d5 |
| 1214 |
case 0x40c6: // move sr,d6 |
| 1215 |
case 0x40c7: // move sr,d7 |
| 1216 |
regs->d[opcode & 7] = GET_SR; |
| 1217 |
INC_PC(2); |
| 1218 |
break; |
| 1219 |
|
| 1220 |
case 0x46c0: // move d0,sr |
| 1221 |
case 0x46c1: // move d1,sr |
| 1222 |
case 0x46c2: // move d2,sr |
| 1223 |
case 0x46c3: // move d3,sr |
| 1224 |
case 0x46c4: // move d4,sr |
| 1225 |
case 0x46c5: // move d5,sr |
| 1226 |
case 0x46c6: // move d6,sr |
| 1227 |
case 0x46c7: { // move d7,sr |
| 1228 |
uint16 sr = regs->d[opcode & 7]; |
| 1229 |
STORE_SR(sr); |
| 1230 |
INC_PC(2); |
| 1231 |
break; |
| 1232 |
} |
| 1233 |
|
| 1234 |
case 0xf327: // fsave -(sp) |
| 1235 |
regs->a[7] -= 4; |
| 1236 |
WriteMacInt32(regs->a[7], 0x41000000); // Idle frame |
| 1237 |
scp->sc_sp = regs->a[7]; |
| 1238 |
INC_PC(2); |
| 1239 |
break; |
| 1240 |
|
| 1241 |
case 0xf35f: // frestore (sp)+ |
| 1242 |
regs->a[7] += 4; |
| 1243 |
scp->sc_sp = regs->a[7]; |
| 1244 |
INC_PC(2); |
| 1245 |
break; |
| 1246 |
|
| 1247 |
case 0x4e73: { // rte |
| 1248 |
uint32 a7 = regs->a[7]; |
| 1249 |
uint16 sr = ReadMacInt16(a7); |
| 1250 |
a7 += 2; |
| 1251 |
scp->sc_ps = sr & 0xff; |
| 1252 |
EmulatedSR = sr & 0xe700; |
| 1253 |
scp->sc_pc = ReadMacInt32(a7); |
| 1254 |
a7 += 4; |
| 1255 |
uint16 format = ReadMacInt16(a7) >> 12; |
| 1256 |
a7 += 2; |
| 1257 |
static const int frame_adj[16] = { |
| 1258 |
0, 0, 4, 4, 8, 0, 0, 52, 50, 12, 24, 84, 16, 0, 0, 0 |
| 1259 |
}; |
| 1260 |
scp->sc_sp = regs->a[7] = a7 + frame_adj[format]; |
| 1261 |
break; |
| 1262 |
} |
| 1263 |
|
| 1264 |
case 0x4e7a: // movec cr,x |
| 1265 |
switch (pc[1]) { |
| 1266 |
case 0x0002: // movec cacr,d0 |
| 1267 |
regs->d[0] = 0x3111; |
| 1268 |
break; |
| 1269 |
case 0x1002: // movec cacr,d1 |
| 1270 |
regs->d[1] = 0x3111; |
| 1271 |
break; |
| 1272 |
case 0x0003: // movec tc,d0 |
| 1273 |
case 0x0004: // movec itt0,d0 |
| 1274 |
case 0x0005: // movec itt1,d0 |
| 1275 |
case 0x0006: // movec dtt0,d0 |
| 1276 |
case 0x0007: // movec dtt1,d0 |
| 1277 |
case 0x0806: // movec urp,d0 |
| 1278 |
case 0x0807: // movec srp,d0 |
| 1279 |
regs->d[0] = 0; |
| 1280 |
break; |
| 1281 |
case 0x1000: // movec sfc,d1 |
| 1282 |
case 0x1001: // movec dfc,d1 |
| 1283 |
case 0x1003: // movec tc,d1 |
| 1284 |
case 0x1801: // movec vbr,d1 |
| 1285 |
regs->d[1] = 0; |
| 1286 |
break; |
| 1287 |
case 0x8801: // movec vbr,a0 |
| 1288 |
regs->a[0] = 0; |
| 1289 |
break; |
| 1290 |
case 0x9801: // movec vbr,a1 |
| 1291 |
regs->a[1] = 0; |
| 1292 |
break; |
| 1293 |
default: |
| 1294 |
goto ill; |
| 1295 |
} |
| 1296 |
INC_PC(4); |
| 1297 |
break; |
| 1298 |
|
| 1299 |
case 0x4e7b: // movec x,cr |
| 1300 |
switch (pc[1]) { |
| 1301 |
case 0x1000: // movec d1,sfc |
| 1302 |
case 0x1001: // movec d1,dfc |
| 1303 |
case 0x0801: // movec d0,vbr |
| 1304 |
case 0x1801: // movec d1,vbr |
| 1305 |
break; |
| 1306 |
case 0x0002: // movec d0,cacr |
| 1307 |
case 0x1002: // movec d1,cacr |
| 1308 |
FlushCodeCache(NULL, 0); |
| 1309 |
break; |
| 1310 |
default: |
| 1311 |
goto ill; |
| 1312 |
} |
| 1313 |
INC_PC(4); |
| 1314 |
break; |
| 1315 |
|
| 1316 |
case 0xf478: // cpusha dc |
| 1317 |
case 0xf4f8: // cpusha dc/ic |
| 1318 |
FlushCodeCache(NULL, 0); |
| 1319 |
INC_PC(2); |
| 1320 |
break; |
| 1321 |
|
| 1322 |
default: |
| 1323 |
ill: printf("SIGILL num %d, code %d\n", sig, code); |
| 1324 |
printf(" context %p:\n", scp); |
| 1325 |
printf(" onstack %08x\n", scp->sc_onstack); |
| 1326 |
printf(" sp %08x\n", scp->sc_sp); |
| 1327 |
printf(" fp %08x\n", scp->sc_fp); |
| 1328 |
printf(" pc %08x\n", scp->sc_pc); |
| 1329 |
printf(" opcode %04x\n", opcode); |
| 1330 |
printf(" sr %08x\n", scp->sc_ps); |
| 1331 |
printf(" state %p:\n", state); |
| 1332 |
printf(" flags %d\n", state->ss_flags); |
| 1333 |
for (int i=0; i<8; i++) |
| 1334 |
printf(" d%d %08x\n", i, state->ss_frame.f_regs[i]); |
| 1335 |
for (int i=0; i<8; i++) |
| 1336 |
printf(" a%d %08x\n", i, state->ss_frame.f_regs[i+8]); |
| 1337 |
|
| 1338 |
VideoQuitFullScreen(); |
| 1339 |
#ifdef ENABLE_MON |
| 1340 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
| 1341 |
mon(3, arg); |
| 1342 |
#endif |
| 1343 |
QuitEmulator(); |
| 1344 |
break; |
| 1345 |
} |
| 1346 |
} |
| 1347 |
#endif |
| 1348 |
|
| 1349 |
|
| 1350 |
/* |
| 1351 |
* Display alert |
| 1352 |
*/ |
| 1353 |
|
| 1354 |
#ifdef ENABLE_GTK |
| 1355 |
static void dl_destroyed(void) |
| 1356 |
{ |
| 1357 |
gtk_main_quit(); |
| 1358 |
} |
| 1359 |
|
| 1360 |
static void dl_quit(GtkWidget *dialog) |
| 1361 |
{ |
| 1362 |
gtk_widget_destroy(dialog); |
| 1363 |
} |
| 1364 |
|
| 1365 |
void display_alert(int title_id, int prefix_id, int button_id, const char *text) |
| 1366 |
{ |
| 1367 |
char str[256]; |
| 1368 |
sprintf(str, GetString(prefix_id), text); |
| 1369 |
|
| 1370 |
GtkWidget *dialog = gtk_dialog_new(); |
| 1371 |
gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id)); |
| 1372 |
gtk_container_border_width(GTK_CONTAINER(dialog), 5); |
| 1373 |
gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150); |
| 1374 |
gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL); |
| 1375 |
|
| 1376 |
GtkWidget *label = gtk_label_new(str); |
| 1377 |
gtk_widget_show(label); |
| 1378 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0); |
| 1379 |
|
| 1380 |
GtkWidget *button = gtk_button_new_with_label(GetString(button_id)); |
| 1381 |
gtk_widget_show(button); |
| 1382 |
gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog)); |
| 1383 |
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0); |
| 1384 |
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT); |
| 1385 |
gtk_widget_grab_default(button); |
| 1386 |
gtk_widget_show(dialog); |
| 1387 |
|
| 1388 |
gtk_main(); |
| 1389 |
} |
| 1390 |
#endif |
| 1391 |
|
| 1392 |
|
| 1393 |
/* |
| 1394 |
* Display error alert |
| 1395 |
*/ |
| 1396 |
|
| 1397 |
void ErrorAlert(const char *text) |
| 1398 |
{ |
| 1399 |
#ifdef ENABLE_GTK |
| 1400 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
| 1401 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
| 1402 |
return; |
| 1403 |
} |
| 1404 |
VideoQuitFullScreen(); |
| 1405 |
display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text); |
| 1406 |
#else |
| 1407 |
printf(GetString(STR_SHELL_ERROR_PREFIX), text); |
| 1408 |
#endif |
| 1409 |
} |
| 1410 |
|
| 1411 |
|
| 1412 |
/* |
| 1413 |
* Display warning alert |
| 1414 |
*/ |
| 1415 |
|
| 1416 |
void WarningAlert(const char *text) |
| 1417 |
{ |
| 1418 |
#ifdef ENABLE_GTK |
| 1419 |
if (PrefsFindBool("nogui") || x_display == NULL) { |
| 1420 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 1421 |
return; |
| 1422 |
} |
| 1423 |
display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text); |
| 1424 |
#else |
| 1425 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 1426 |
#endif |
| 1427 |
} |
| 1428 |
|
| 1429 |
|
| 1430 |
/* |
| 1431 |
* Display choice alert |
| 1432 |
*/ |
| 1433 |
|
| 1434 |
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
| 1435 |
{ |
| 1436 |
printf(GetString(STR_SHELL_WARNING_PREFIX), text); |
| 1437 |
return false; //!! |
| 1438 |
} |
