1 |
/* |
2 |
* $Id: main_macosx.mm,v 1.12 2004/01/27 00:18:24 nigel Exp $ |
3 |
* |
4 |
* main_macosx.mm - Startup code for MacOS X |
5 |
* Based (in a small way) on the default main.m, |
6 |
and on Basilisk's main_unix.cpp |
7 |
* |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#define PTHREADS // Why is this here? |
25 |
#include "sysdeps.h" |
26 |
|
27 |
#ifdef HAVE_PTHREADS |
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# include <pthread.h> |
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#endif |
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|
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#if REAL_ADDRESSING || DIRECT_ADDRESSING |
32 |
# include <sys/mman.h> |
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#endif |
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|
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#include <string> |
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using std::string; |
37 |
|
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#include "cpu_emulation.h" |
39 |
#include "macos_util_macosx.h" |
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#include "main.h" |
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#include "prefs.h" |
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#include "prefs_editor.h" |
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#include "rom_patches.h" |
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#include "sigsegv.h" |
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#include "sys.h" |
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#include "user_strings.h" |
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#include "version.h" |
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#include "video.h" |
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#include "vm_alloc.h" |
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#include "xpram.h" |
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|
52 |
#if USE_JIT |
53 |
extern void flush_icache_range(uint32 start, uint32 size); // from compemu_support.cpp |
54 |
#endif |
55 |
|
56 |
#ifdef ENABLE_MON |
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# include "mon.h" |
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#endif |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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#import <AppKit/AppKit.h> |
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|
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#include "main_macosx.h" // To bridge between main() and misc. classes |
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|
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|
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// Constants |
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const char ROM_FILE_NAME[] = "ROM"; |
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const int SCRATCH_MEM_SIZE = 0x10000; // Size of scratch memory area |
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|
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|
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// CPU and FPU type, addressing mode |
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int CPUType; |
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bool CPUIs68060; |
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int FPUType; |
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bool TwentyFourBitAddressing; |
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|
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|
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// Global variables |
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|
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#ifdef HAVE_PTHREADS |
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|
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static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags |
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#define LOCK_INTFLAGS pthread_mutex_lock(&intflag_lock) |
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#define UNLOCK_INTFLAGS pthread_mutex_unlock(&intflag_lock) |
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|
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#else |
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|
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#define LOCK_INTFLAGS |
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#define UNLOCK_INTFLAGS |
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|
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#endif |
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|
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#if USE_SCRATCHMEM_SUBTERFUGE |
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uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes |
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#endif |
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|
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#ifdef ENABLE_MON |
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static struct sigaction sigint_sa; // sigaction for SIGINT handler |
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static void sigint_handler(...); |
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#endif |
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|
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#if REAL_ADDRESSING |
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static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped |
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#endif |
108 |
|
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|
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/* |
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* SIGSEGV handler |
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*/ |
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|
114 |
static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, |
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sigsegv_address_t fault_instruction) |
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{ |
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#if ENABLE_VOSF |
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// Handle screen fault |
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extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t); |
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if (Screen_fault_handler(fault_address, fault_instruction)) |
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return SIGSEGV_RETURN_SUCCESS; |
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#endif |
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|
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#ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION |
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// Ignore writes to ROM |
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if (((uintptr)fault_address - (uintptr)ROMBaseHost) < ROMSize) |
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return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
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|
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// Ignore all other faults, if requested |
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if (PrefsFindBool("ignoresegv")) |
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return SIGSEGV_RETURN_SKIP_INSTRUCTION; |
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#endif |
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|
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return SIGSEGV_RETURN_FAILURE; |
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} |
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|
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|
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/* |
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* Dump state when everything went wrong after a SEGV |
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*/ |
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|
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static void sigsegv_dump_state(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction) |
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{ |
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fprintf(stderr, "Caught SIGSEGV at address %p", fault_address); |
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if (fault_instruction != SIGSEGV_INVALID_PC) |
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fprintf(stderr, " [IP=%p]", fault_instruction); |
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fprintf(stderr, "\n"); |
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uaecptr nextpc; |
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extern void m68k_dumpstate(uaecptr *nextpc); |
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m68k_dumpstate(&nextpc); |
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#if USE_JIT && JIT_DEBUG |
152 |
extern void compiler_dumpstate(void); |
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compiler_dumpstate(); |
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#endif |
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VideoQuitFullScreen(); |
156 |
#ifdef ENABLE_MON |
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char *arg[4] = {"mon", "-m", "-r", NULL}; |
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mon(3, arg); |
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QuitEmulator(); |
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#endif |
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} |
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|
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|
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/* |
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* Main program |
166 |
*/ |
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|
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static void usage(const char *prg_name) |
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{ |
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printf("Usage: %s [OPTION...]\n", prg_name); |
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printf("\nUnix options:\n"); |
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printf(" --help\n display this usage message\n"); |
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printf(" --config FILE\n read/write configuration from/to FILE\n"); |
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printf(" --break ADDRESS\n set ROM breakpoint\n"); |
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printf(" --rominfo\n dump ROM information\n"); |
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LoadPrefs(); // read the prefs file so PrefsPrintUsage() will print the correct default values |
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PrefsPrintUsage(); |
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exit(0); |
179 |
} |
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|
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int main(int argc, char **argv) |
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{ |
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// Initialize variables |
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RAMBaseHost = NULL; |
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ROMBaseHost = NULL; |
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srand(time(NULL)); |
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tzset(); |
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|
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// Print some info |
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printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR); |
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printf(" %s\n", GetString(STR_ABOUT_TEXT2)); |
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|
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// Parse command line arguments |
194 |
for (int i=1; i<argc; i++) { |
195 |
if (strcmp(argv[i], "--help") == 0) { |
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usage(argv[0]); |
197 |
} else if (strncmp(argv[i], "-psn_", 5) == 0) {// OS X process identifier |
198 |
i++; |
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} else if (strcmp(argv[i], "--break") == 0) { |
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i++; |
201 |
if (i < argc) |
202 |
ROMBreakpoint = strtol(argv[i], NULL, 0); |
203 |
} else if (strcmp(argv[i], "--config") == 0) { |
204 |
argv[i++] = NULL; |
205 |
if (i < argc) { |
206 |
extern string UserPrefsPath; // from prefs_unix.cpp |
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UserPrefsPath = argv[i]; |
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argv[i] = NULL; |
209 |
} |
210 |
} else if (strcmp(argv[i], "--rominfo") == 0) { |
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PrintROMInfo = true; |
212 |
} else if (argv[i][0] == '-') { |
213 |
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]); |
214 |
usage(argv[0]); |
215 |
} |
216 |
} |
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|
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// Read preferences |
219 |
PrefsInit(argc, argv); |
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|
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// Init system routines |
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SysInit(); |
223 |
|
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// Open display, attach to window server, |
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// load pre-instantiated classes from MainMenu.nib, start run loop |
226 |
int i = NSApplicationMain(argc, (const char **)argv); |
227 |
// We currently never get past here, because QuitEmulator() does an exit() |
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|
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// Exit system routines |
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SysExit(); |
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|
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// Exit preferences |
233 |
PrefsExit(); |
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|
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return i; |
236 |
} |
237 |
|
238 |
#define QuitEmulator() { QuitEmuNoExit() ; return NO; } |
239 |
|
240 |
bool InitEmulator (void) |
241 |
{ |
242 |
char str[256]; |
243 |
|
244 |
|
245 |
// Install the handler for SIGSEGV |
246 |
if (!sigsegv_install_handler(sigsegv_handler)) { |
247 |
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno)); |
248 |
ErrorAlert(str); |
249 |
QuitEmulator(); |
250 |
} |
251 |
|
252 |
// Register dump state function when we got mad after a segfault |
253 |
sigsegv_set_dump_state(sigsegv_dump_state); |
254 |
|
255 |
// Read RAM size |
256 |
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary |
257 |
if (RAMSize < 1024*1024) { |
258 |
WarningAlert(GetString(STR_SMALL_RAM_WARN)); |
259 |
RAMSize = 1024*1024; |
260 |
} |
261 |
|
262 |
#if REAL_ADDRESSING || DIRECT_ADDRESSING |
263 |
RAMSize = RAMSize & -getpagesize(); // Round down to page boundary |
264 |
#endif |
265 |
|
266 |
// Initialize VM system |
267 |
vm_init(); |
268 |
|
269 |
#if REAL_ADDRESSING |
270 |
// Flag: RAM and ROM are contigously allocated from address 0 |
271 |
bool memory_mapped_from_zero = false; |
272 |
|
273 |
// Under Solaris/SPARC and NetBSD/m68k, Basilisk II is known to crash |
274 |
// when trying to map a too big chunk of memory starting at address 0 |
275 |
#if defined(OS_solaris) || defined(OS_netbsd) || defined(PAGEZERO_HACK) |
276 |
const bool can_map_all_memory = false; |
277 |
#else |
278 |
const bool can_map_all_memory = true; |
279 |
#endif |
280 |
|
281 |
// Try to allocate all memory from 0x0000, if it is not known to crash |
282 |
if (can_map_all_memory && (vm_acquire_fixed(0, RAMSize + 0x100000) == 0)) { |
283 |
D(bug("Could allocate RAM and ROM from 0x0000\n")); |
284 |
memory_mapped_from_zero = true; |
285 |
} |
286 |
|
287 |
#ifndef PAGEZERO_HACK |
288 |
// Otherwise, just create the Low Memory area (0x0000..0x2000) |
289 |
else if (vm_acquire_fixed(0, 0x2000) == 0) { |
290 |
D(bug("Could allocate the Low Memory globals\n")); |
291 |
lm_area_mapped = true; |
292 |
} |
293 |
|
294 |
// Exit on failure |
295 |
else { |
296 |
sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno)); |
297 |
ErrorAlert(str); |
298 |
QuitEmulator(); |
299 |
} |
300 |
#endif |
301 |
#else |
302 |
*str = 0; // Eliminate unused variable warning |
303 |
#endif /* REAL_ADDRESSING */ |
304 |
|
305 |
// Create areas for Mac RAM and ROM |
306 |
#if REAL_ADDRESSING |
307 |
if (memory_mapped_from_zero) { |
308 |
RAMBaseHost = (uint8 *)0; |
309 |
ROMBaseHost = RAMBaseHost + RAMSize; |
310 |
} |
311 |
else |
312 |
#endif |
313 |
{ |
314 |
RAMBaseHost = (uint8 *)vm_acquire(RAMSize); |
315 |
ROMBaseHost = (uint8 *)vm_acquire(0x100000); |
316 |
if (RAMBaseHost == VM_MAP_FAILED || ROMBaseHost == VM_MAP_FAILED) { |
317 |
ErrorAlert(STR_NO_MEM_ERR); |
318 |
QuitEmulator(); |
319 |
} |
320 |
} |
321 |
|
322 |
#if USE_SCRATCHMEM_SUBTERFUGE |
323 |
// Allocate scratch memory |
324 |
ScratchMem = (uint8 *)vm_acquire(SCRATCH_MEM_SIZE); |
325 |
if (ScratchMem == VM_MAP_FAILED) { |
326 |
ErrorAlert(STR_NO_MEM_ERR); |
327 |
QuitEmulator(); |
328 |
} |
329 |
ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block |
330 |
#endif |
331 |
|
332 |
#if DIRECT_ADDRESSING |
333 |
// RAMBaseMac shall always be zero |
334 |
MEMBaseDiff = (uintptr)RAMBaseHost; |
335 |
RAMBaseMac = 0; |
336 |
ROMBaseMac = Host2MacAddr(ROMBaseHost); |
337 |
#endif |
338 |
#if REAL_ADDRESSING |
339 |
RAMBaseMac = (uint32)RAMBaseHost; |
340 |
ROMBaseMac = (uint32)ROMBaseHost; |
341 |
#endif |
342 |
D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac)); |
343 |
D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac)); |
344 |
|
345 |
// Get rom file path from preferences |
346 |
const char *rom_path = PrefsFindString("rom"); |
347 |
if ( ! rom_path ) |
348 |
WarningAlert("No rom pathname set. Trying ./ROM"); |
349 |
|
350 |
// Load Mac ROM |
351 |
int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY); |
352 |
if (rom_fd < 0) { |
353 |
ErrorAlert(STR_NO_ROM_FILE_ERR); |
354 |
QuitEmulator(); |
355 |
} |
356 |
printf(GetString(STR_READING_ROM_FILE)); |
357 |
ROMSize = lseek(rom_fd, 0, SEEK_END); |
358 |
if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) { |
359 |
ErrorAlert(STR_ROM_SIZE_ERR); |
360 |
close(rom_fd); |
361 |
QuitEmulator(); |
362 |
} |
363 |
lseek(rom_fd, 0, SEEK_SET); |
364 |
if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) { |
365 |
ErrorAlert(STR_ROM_FILE_READ_ERR); |
366 |
close(rom_fd); |
367 |
QuitEmulator(); |
368 |
} |
369 |
|
370 |
|
371 |
// Initialize everything |
372 |
if (!InitAll()) |
373 |
QuitEmulator(); |
374 |
D(bug("Initialization complete\n")); |
375 |
|
376 |
|
377 |
#ifdef ENABLE_MON |
378 |
// Setup SIGINT handler to enter mon |
379 |
sigemptyset(&sigint_sa.sa_mask); |
380 |
sigint_sa.sa_handler = (void (*)(int))sigint_handler; |
381 |
sigint_sa.sa_flags = 0; |
382 |
sigaction(SIGINT, &sigint_sa, NULL); |
383 |
#endif |
384 |
|
385 |
|
386 |
return YES; |
387 |
} |
388 |
|
389 |
#undef QuitEmulator() |
390 |
|
391 |
|
392 |
/* |
393 |
* Quit emulator |
394 |
*/ |
395 |
|
396 |
void QuitEmuNoExit() |
397 |
{ |
398 |
D(bug("QuitEmulator\n")); |
399 |
|
400 |
// Exit 680x0 emulation |
401 |
Exit680x0(); |
402 |
|
403 |
// Deinitialize everything |
404 |
ExitAll(); |
405 |
|
406 |
// Free ROM/RAM areas |
407 |
if (RAMBaseHost != VM_MAP_FAILED) { |
408 |
vm_release(RAMBaseHost, RAMSize); |
409 |
RAMBaseHost = NULL; |
410 |
} |
411 |
if (ROMBaseHost != VM_MAP_FAILED) { |
412 |
vm_release(ROMBaseHost, 0x100000); |
413 |
ROMBaseHost = NULL; |
414 |
} |
415 |
|
416 |
#if USE_SCRATCHMEM_SUBTERFUGE |
417 |
// Delete scratch memory area |
418 |
if (ScratchMem != (uint8 *)VM_MAP_FAILED) { |
419 |
vm_release((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE); |
420 |
ScratchMem = NULL; |
421 |
} |
422 |
#endif |
423 |
|
424 |
#if REAL_ADDRESSING |
425 |
// Delete Low Memory area |
426 |
if (lm_area_mapped) |
427 |
vm_release(0, 0x2000); |
428 |
#endif |
429 |
|
430 |
// Exit VM wrappers |
431 |
vm_exit(); |
432 |
|
433 |
// Exit system routines |
434 |
SysExit(); |
435 |
|
436 |
// Exit preferences |
437 |
PrefsExit(); |
438 |
} |
439 |
|
440 |
void QuitEmulator(void) |
441 |
{ |
442 |
extern NSApplication *NSApp; |
443 |
|
444 |
|
445 |
QuitEmuNoExit(); |
446 |
|
447 |
// Stop run loop? |
448 |
[NSApp terminate: nil]; |
449 |
|
450 |
exit(0); |
451 |
} |
452 |
|
453 |
|
454 |
/* |
455 |
* Code was patched, flush caches if neccessary (i.e. when using a real 680x0 |
456 |
* or a dynamically recompiling emulator) |
457 |
*/ |
458 |
|
459 |
void FlushCodeCache(void *start, uint32 size) |
460 |
{ |
461 |
#if USE_JIT |
462 |
if (UseJIT) |
463 |
flush_icache_range((uintptr)start, size); |
464 |
#endif |
465 |
} |
466 |
|
467 |
|
468 |
/* |
469 |
* SIGINT handler, enters mon |
470 |
*/ |
471 |
|
472 |
#ifdef ENABLE_MON |
473 |
static void sigint_handler(...) |
474 |
{ |
475 |
uaecptr nextpc; |
476 |
extern void m68k_dumpstate(uaecptr *nextpc); |
477 |
m68k_dumpstate(&nextpc); |
478 |
VideoQuitFullScreen(); |
479 |
char *arg[4] = {"mon", "-m", "-r", NULL}; |
480 |
mon(3, arg); |
481 |
QuitEmulator(); |
482 |
} |
483 |
#endif |
484 |
|
485 |
|
486 |
/* |
487 |
* Mutexes |
488 |
*/ |
489 |
|
490 |
#ifdef HAVE_PTHREADS |
491 |
|
492 |
struct B2_mutex { |
493 |
B2_mutex() { |
494 |
pthread_mutexattr_t attr; |
495 |
pthread_mutexattr_init(&attr); |
496 |
// Initialize the mutex for priority inheritance -- |
497 |
// required for accurate timing. |
498 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL |
499 |
pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT); |
500 |
#endif |
501 |
#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL) |
502 |
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL); |
503 |
#endif |
504 |
#ifdef HAVE_PTHREAD_MUTEXATTR_SETPSHARED |
505 |
pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_PRIVATE); |
506 |
#endif |
507 |
pthread_mutex_init(&m, &attr); |
508 |
pthread_mutexattr_destroy(&attr); |
509 |
} |
510 |
~B2_mutex() { |
511 |
pthread_mutex_trylock(&m); // Make sure it's locked before |
512 |
pthread_mutex_unlock(&m); // unlocking it. |
513 |
pthread_mutex_destroy(&m); |
514 |
} |
515 |
pthread_mutex_t m; |
516 |
}; |
517 |
|
518 |
B2_mutex *B2_create_mutex(void) |
519 |
{ |
520 |
return new B2_mutex; |
521 |
} |
522 |
|
523 |
void B2_lock_mutex(B2_mutex *mutex) |
524 |
{ |
525 |
pthread_mutex_lock(&mutex->m); |
526 |
} |
527 |
|
528 |
void B2_unlock_mutex(B2_mutex *mutex) |
529 |
{ |
530 |
pthread_mutex_unlock(&mutex->m); |
531 |
} |
532 |
|
533 |
void B2_delete_mutex(B2_mutex *mutex) |
534 |
{ |
535 |
delete mutex; |
536 |
} |
537 |
|
538 |
#else |
539 |
|
540 |
struct B2_mutex { |
541 |
int dummy; |
542 |
}; |
543 |
|
544 |
B2_mutex *B2_create_mutex(void) |
545 |
{ |
546 |
return new B2_mutex; |
547 |
} |
548 |
|
549 |
void B2_lock_mutex(B2_mutex *mutex) |
550 |
{ |
551 |
} |
552 |
|
553 |
void B2_unlock_mutex(B2_mutex *mutex) |
554 |
{ |
555 |
} |
556 |
|
557 |
void B2_delete_mutex(B2_mutex *mutex) |
558 |
{ |
559 |
delete mutex; |
560 |
} |
561 |
|
562 |
#endif |
563 |
|
564 |
|
565 |
/* |
566 |
* Interrupt flags (must be handled atomically!) |
567 |
*/ |
568 |
|
569 |
uint32 InterruptFlags = 0; |
570 |
|
571 |
void SetInterruptFlag(uint32 flag) |
572 |
{ |
573 |
LOCK_INTFLAGS; |
574 |
InterruptFlags |= flag; |
575 |
UNLOCK_INTFLAGS; |
576 |
} |
577 |
|
578 |
void ClearInterruptFlag(uint32 flag) |
579 |
{ |
580 |
LOCK_INTFLAGS; |
581 |
InterruptFlags &= ~flag; |
582 |
UNLOCK_INTFLAGS; |
583 |
} |
584 |
|
585 |
|
586 |
/* |
587 |
* Display error alert |
588 |
*/ |
589 |
|
590 |
void ErrorAlert(const char *text) |
591 |
{ |
592 |
NSString *title = [NSString stringWithCString: |
593 |
GetString(STR_ERROR_ALERT_TITLE) ]; |
594 |
NSString *error = [NSString stringWithCString: text]; |
595 |
NSString *button = [NSString stringWithCString: GetString(STR_QUIT_BUTTON) ]; |
596 |
|
597 |
NSLog(error); |
598 |
if ( PrefsFindBool("nogui") ) |
599 |
return; |
600 |
VideoQuitFullScreen(); |
601 |
NSRunCriticalAlertPanel(title, error, button, nil, nil); |
602 |
} |
603 |
|
604 |
|
605 |
/* |
606 |
* Display warning alert |
607 |
*/ |
608 |
|
609 |
void WarningAlert(const char *text) |
610 |
{ |
611 |
NSString *title = [NSString stringWithCString: |
612 |
GetString(STR_WARNING_ALERT_TITLE) ]; |
613 |
NSString *warning = [NSString stringWithCString: text]; |
614 |
NSString *button = [NSString stringWithCString: GetString(STR_OK_BUTTON) ]; |
615 |
|
616 |
NSLog(warning); |
617 |
if ( PrefsFindBool("nogui") ) |
618 |
return; |
619 |
VideoQuitFullScreen(); |
620 |
NSRunAlertPanel(title, warning, button, nil, nil); |
621 |
} |
622 |
|
623 |
|
624 |
/* |
625 |
* Display choice alert |
626 |
*/ |
627 |
|
628 |
bool ChoiceAlert(const char *text, const char *pos, const char *neg) |
629 |
{ |
630 |
NSString *title = [NSString stringWithCString: |
631 |
GetString(STR_WARNING_ALERT_TITLE) ]; |
632 |
NSString *warning = [NSString stringWithCString: text]; |
633 |
NSString *yes = [NSString stringWithCString: pos]; |
634 |
NSString *no = [NSString stringWithCString: neg]; |
635 |
|
636 |
return NSRunInformationalAlertPanel(title, warning, yes, no, nil); |
637 |
} |