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main_unix.cpp
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main_unix.cpp
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/*
* main_unix.cpp - Startup code for Unix
*
* Basilisk II (C) Christian Bauer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sysdeps.h"
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <errno.h>
#ifdef USE_SDL
# include <SDL.h>
#endif
#ifndef USE_SDL_VIDEO
# include <X11/Xlib.h>
#endif
#ifdef HAVE_PTHREADS
# include <pthread.h>
#endif
#if defined(EMSCRIPTEN) && !defined(__EMSCRIPTEN_PTHREADS__)
# include <audio.h>
#endif
#if REAL_ADDRESSING || DIRECT_ADDRESSING
# include <sys/mman.h>
#endif
#if !EMULATED_68K && defined(__NetBSD__)
# include <m68k/sync_icache.h>
# include <m68k/frame.h>
# include <sys/param.h>
# include <sys/sysctl.h>
struct sigstate {
int ss_flags;
struct frame ss_frame;
struct fpframe ss_fpstate;
};
# define SS_FPSTATE 0x02
# define SS_USERREGS 0x04
#endif
#ifdef ENABLE_GTK
# include <gtk/gtk.h>
# include <gdk/gdk.h>
# ifdef HAVE_GNOMEUI
# include <gnome.h>
# endif
#endif
#ifdef ENABLE_XF86_DGA
# include <X11/Xutil.h>
# include <X11/extensions/Xxf86dga.h>
#endif
#ifndef EMSCRIPTEN
#define OSX_BACKTRACE 1
#endif
#ifdef OSX_BACKTRACE
#include <execinfo.h>
#endif
#include <string>
using std::string;
#include "cpu_emulation.h"
#include "sys.h"
#include "rom_patches.h"
#include "xpram.h"
#include "timer.h"
#include "video.h"
#include "emul_op.h"
#include "prefs.h"
#include "prefs_editor.h"
#include "macos_util.h"
#include "user_strings.h"
#include "version.h"
#include "main.h"
#include "vm_alloc.h"
#include "sigsegv.h"
#include "rpc.h"
#ifdef EMSCRIPTEN
#include <emscripten.h>
#endif
#if USE_JIT
extern void flush_icache_range(uint8 *start, uint32 size); // from compemu_support.cpp
#endif
#ifdef ENABLE_MON
# include "mon.h"
#endif
#define DEBUG 0
#include "debug.h"
// Constants
const char ROM_FILE_NAME[] = "ROM";
#if !EMULATED_68K
const int SIG_STACK_SIZE = SIGSTKSZ; // Size of signal stack
#endif
const int SCRATCH_MEM_SIZE = 0x10000; // Size of scratch memory area
#if !EMULATED_68K
// RAM and ROM pointers
uint32 RAMBaseMac; // RAM base (Mac address space)
uint8 *RAMBaseHost; // RAM base (host address space)
uint32 RAMSize; // Size of RAM
uint32 ROMBaseMac; // ROM base (Mac address space)
uint8 *ROMBaseHost; // ROM base (host address space)
uint32 ROMSize; // Size of ROM
#endif
// CPU and FPU type, addressing mode
int CPUType;
bool CPUIs68060;
int FPUType;
bool TwentyFourBitAddressing;
// Global variables
#ifndef USE_SDL_VIDEO
extern char *x_display_name; // X11 display name
extern Display *x_display; // X11 display handle
#ifdef X11_LOCK_TYPE
X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
#endif
#endif
static uint8 last_xpram[XPRAM_SIZE]; // Buffer for monitoring XPRAM changes
#ifdef HAVE_PTHREADS
#if !EMULATED_68K
static pthread_t emul_thread; // Handle of MacOS emulation thread (main thread)
#endif
static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed
static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread
static pthread_t xpram_thread; // XPRAM watchdog
static bool tick_thread_active = false; // Flag: 60Hz thread installed
static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread
static pthread_t tick_thread; // 60Hz thread
static pthread_attr_t tick_thread_attr; // 60Hz thread attributes
static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags
#define LOCK_INTFLAGS pthread_mutex_lock(&intflag_lock)
#define UNLOCK_INTFLAGS pthread_mutex_unlock(&intflag_lock)
#else
#define LOCK_INTFLAGS
#define UNLOCK_INTFLAGS
#endif
#if !EMULATED_68K
#define SIG_IRQ SIGUSR1
static struct sigaction sigirq_sa; // Virtual 68k interrupt signal
static struct sigaction sigill_sa; // Illegal instruction
static void *sig_stack = NULL; // Stack for signal handlers
uint16 EmulatedSR; // Emulated bits of SR (supervisor bit and interrupt mask)
#endif
#if USE_SCRATCHMEM_SUBTERFUGE
uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes
#endif
#if !defined(HAVE_PTHREADS)
static struct sigaction timer_sa; // sigaction used for timer
#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
#define SIG_TIMER SIGRTMIN
static timer_t timer; // 60Hz timer
#endif
#endif // !HAVE_PTHREADS
#ifdef ENABLE_MON
static struct sigaction sigint_sa; // sigaction for SIGINT handler
static void sigint_handler(...);
#endif
#if REAL_ADDRESSING
static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
#endif
static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
static const char *gui_connection_path = NULL; // GUI connection identifier
// Prototypes
static void *xpram_func(void *arg);
static void *tick_func(void *arg);
static void one_tick(...);
#if !EMULATED_68K
static void sigirq_handler(int sig, int code, struct sigcontext *scp);
static void sigill_handler(int sig, int code, struct sigcontext *scp);
extern "C" void EmulOpTrampoline(void);
#endif
/*
* Ersatz functions
*/
extern "C" {
#ifndef HAVE_STRDUP
char *strdup(const char *s)
{
char *n = (char *)malloc(strlen(s) + 1);
strcpy(n, s);
return n;
}
#endif
}
/*
* Helpers to map memory that can be accessed from the Mac side
*/
// NOTE: VM_MAP_32BIT is only used when compiling a 64-bit JIT on specific platforms
void *vm_acquire_mac(size_t size)
{
return vm_acquire(size, VM_MAP_DEFAULT | VM_MAP_32BIT);
}
static int vm_acquire_mac_fixed(void *addr, size_t size)
{
return vm_acquire_fixed(addr, size, VM_MAP_DEFAULT | VM_MAP_32BIT);
}
/*
* SIGSEGV handler
*/
static sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip)
{
const uintptr fault_address = (uintptr_t)sigsegv_get_fault_address(sip);
#if ENABLE_VOSF
// Handle screen fault
extern bool Screen_fault_handler(sigsegv_info_t *sip);
if (Screen_fault_handler(sip))
return SIGSEGV_RETURN_SUCCESS;
#endif
#ifdef HAVE_SIGSEGV_SKIP_INSTRUCTION
// Ignore writes to ROM
if (((uintptr)fault_address - (uintptr)ROMBaseHost) < ROMSize)
return SIGSEGV_RETURN_SKIP_INSTRUCTION;
// Ignore all other faults, if requested
if (PrefsFindBool("ignoresegv"))
return SIGSEGV_RETURN_SKIP_INSTRUCTION;
#endif
return SIGSEGV_RETURN_FAILURE;
}
/*
* Dump state when everything went wrong after a SEGV
*/
static void sigsegv_dump_state(sigsegv_info_t *sip)
{
const sigsegv_address_t fault_address = sigsegv_get_fault_address(sip);
const sigsegv_address_t fault_instruction = sigsegv_get_fault_instruction_address(sip);
fprintf(stderr, "Caught SIGSEGV at address %p", fault_address);
if (fault_instruction != SIGSEGV_INVALID_ADDRESS)
fprintf(stderr, " [IP=%p]", fault_instruction);
fprintf(stderr, "\n");
#if EMULATED_68K
uaecptr nextpc;
extern void m68k_dumpstate(uaecptr *nextpc);
m68k_dumpstate(&nextpc);
#endif
#if USE_JIT && JIT_DEBUG
extern void compiler_dumpstate(void);
compiler_dumpstate();
#endif
VideoQuitFullScreen();
#ifdef ENABLE_MON
const char *arg[4] = {"mon", "-m", "-r", NULL};
mon(3, arg);
#endif
QuitEmulator();
}
/*
* Update virtual clock and trigger interrupts if necessary
*/
#ifdef USE_CPU_EMUL_SERVICES
static uint64 n_check_ticks = 0;
static uint64 emulated_ticks_start = 0;
static uint64 emulated_ticks_count = 0;
static int64 emulated_ticks_current = 0;
static int32 emulated_ticks_quantum = 1000;
int32 emulated_ticks = emulated_ticks_quantum;
void cpu_do_check_ticks(void)
{
#if DEBUG
n_check_ticks++;
#endif
uint64 now;
static uint64 next = 0;
if (next == 0)
next = emulated_ticks_start = GetTicks_usec();
// Update total instructions count
if (emulated_ticks <= 0) {
emulated_ticks_current += (emulated_ticks_quantum - emulated_ticks);
// XXX: can you really have a machine fast enough to overflow
// a 63-bit m68k instruction counter within 16 ms?
if (emulated_ticks_current < 0) {
printf("WARNING: Overflowed 63-bit m68k instruction counter in less than 16 ms!\n");
goto recalibrate_quantum;
}
}
// Check for interrupt opportunity
now = GetTicks_usec();
if (next < now) {
one_tick();
do {
next += 16625;
} while (next < now);
emulated_ticks_count++;
// Recalibrate 1000 Hz quantum every 10 ticks
static uint64 last = 0;
if (last == 0)
last = now;
else if (now - last > 166250) {
recalibrate_quantum:
emulated_ticks_quantum = ((uint64)emulated_ticks_current * 1000) / (now - last);
emulated_ticks_current = 0;
last = now;
}
}
// Update countdown
if (emulated_ticks <= 0)
emulated_ticks += emulated_ticks_quantum;
}
#endif
#ifdef OSX_BACKTRACE
void segfaulthandler(int sig) {
void *array[10];
size_t size;
// get void*'s for all entries on the stack
size = backtrace(array, 10);
// print out all the frames to stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, STDERR_FILENO);
exit(1);
}
#endif
/*
* Main program
*/
static void usage(const char *prg_name)
{
printf(
"Usage: %s [OPTION...]\n"
"\nUnix options:\n"
" --config FILE\n read/write configuration from/to FILE\n"
" --display STRING\n X display to use\n"
" --break ADDRESS\n set ROM breakpoint\n"
" --rominfo\n dump ROM information\n", prg_name
);
LoadPrefs(NULL); // read the prefs file so PrefsPrintUsage() will print the correct default values
PrefsPrintUsage();
exit(0);
}
#ifdef __EMSCRIPTEN_PTHREADS__
static int main_argc;
static char **main_argv;
static pthread_t main_thread;
static pthread_attr_t main_thread_attr;
void Set_pthread_attr (pthread_attr_t *attr, int priority);
void *main_thread_func(void *arg);
int fake_main(int argc, char **argv);
void emscripten_step();
#endif
int main(int argc, char **argv)
{
#ifdef __EMSCRIPTEN_PTHREADS__
main_argc = argc;
main_argv = argv;
Set_pthread_attr(&main_thread_attr, 0);
printf("spawining main thread\n");
pthread_create(&main_thread, NULL, main_thread_func, NULL);
emscripten_set_main_loop(*emscripten_step, 1, true);
}
void emscripten_step()
{
}
void *main_thread_func(void *arg)
{
printf("main_thread_func\n");
fake_main(main_argc, main_argv);
}
int fake_main(int argc, char **argv)
{
#endif // __EMSCRIPTEN_PTHREADS__
const char *vmdir = NULL;
char str[256];
printf("fake_main\n");
// Initialize variables
RAMBaseHost = NULL;
ROMBaseHost = NULL;
srand(time(NULL));
tzset();
#ifdef OSX_BACKTRACE
signal(SIGSEGV, segfaulthandler); // install our handler
#endif
// Print some info
printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
printf(" %s\n", GetString(STR_ABOUT_TEXT2));
// Parse command line arguments
for (int i=1; i<argc; i++) {
if (strcmp(argv[i], "--help") == 0) {
usage(argv[0]);
#ifndef USE_SDL_VIDEO
} else if (strcmp(argv[i], "--display") == 0) {
i++; // don't remove the argument, gtk_init() needs it too
if (i < argc)
x_display_name = strdup(argv[i]);
#endif
} else if (strcmp(argv[i], "--gui-connection") == 0) {
argv[i++] = NULL;
if (i < argc) {
gui_connection_path = argv[i];
argv[i] = NULL;
}
} else if (strcmp(argv[i], "--break") == 0) {
argv[i++] = NULL;
if (i < argc) {
ROMBreakpoint = strtol(argv[i], NULL, 0);
argv[i] = NULL;
}
} else if (strcmp(argv[i], "--config") == 0) {
argv[i++] = NULL;
if (i < argc) {
extern string UserPrefsPath; // from prefs_unix.cpp
UserPrefsPath = argv[i];
argv[i] = NULL;
}
} else if (strcmp(argv[i], "--rominfo") == 0) {
argv[i] = NULL;
PrintROMInfo = true;
}
}
// Remove processed arguments
for (int i=1; i<argc; i++) {
int k;
for (k=i; k<argc; k++)
if (argv[k] != NULL)
break;
if (k > i) {
k -= i;
for (int j=i+k; j<argc; j++)
argv[j-k] = argv[j];
argc -= k;
}
}
// Connect to the external GUI
if (gui_connection_path) {
if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
return 1;
}
}
#ifdef ENABLE_GTK
if (!gui_connection) {
#ifdef HAVE_GNOMEUI
// Init GNOME/GTK
char version[16];
sprintf(version, "%d.%d", VERSION_MAJOR, VERSION_MINOR);
gnome_init("Basilisk II", version, argc, argv);
#else
// Init GTK
gtk_set_locale();
gtk_init(&argc, &argv);
#endif
}
#endif
// Read preferences
PrefsInit(vmdir, argc, argv);
// Any command line arguments left?
for (int i=1; i<argc; i++) {
if (argv[i][0] == '-') {
fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
usage(argv[0]);
}
}
#ifndef USE_SDL_VIDEO
// Open display
x_display = XOpenDisplay(x_display_name);
if (x_display == NULL) {
char str[256];
sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
ErrorAlert(str);
QuitEmulator();
}
#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
// Fork out, so we can return from fullscreen mode when things get ugly
XF86DGAForkApp(DefaultScreen(x_display));
#endif
#endif
#ifndef EMSCRIPTEN
#ifdef USE_SDL
// Initialize SDL system
int sdl_flags = 0;
#ifdef USE_SDL_VIDEO
sdl_flags |= SDL_INIT_VIDEO;
#endif
#ifdef USE_SDL_AUDIO
sdl_flags |= SDL_INIT_AUDIO;
#endif
assert(sdl_flags != 0);
if (SDL_Init(sdl_flags) == -1) {
char str[256];
sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
ErrorAlert(str);
QuitEmulator();
}
atexit(SDL_Quit);
#endif
#endif // not EMSCRIPTEN
// Init system routines
SysInit();
// Show preferences editor
if (!gui_connection && !PrefsFindBool("nogui"))
if (!PrefsEditor())
QuitEmulator();
#ifdef HAVE_MACH_EXCEPTIONS
printf("HAVE_MACH_EXCEPTIONS");
// Install the handler for SIGSEGV
if (!sigsegv_install_handler(sigsegv_handler)) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
// Register dump state function when we got mad after a segfault
sigsegv_set_dump_state(sigsegv_dump_state);
#endif
// Read RAM size
RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
if (RAMSize < 1024*1024) {
WarningAlert(GetString(STR_SMALL_RAM_WARN));
RAMSize = 1024*1024;
}
if (RAMSize > 1023*1024*1024) // Cap to 1023MB (APD crashes at 1GB)
RAMSize = 1023*1024*1024;
#if REAL_ADDRESSING || DIRECT_ADDRESSING
RAMSize = RAMSize & -getpagesize(); // Round down to page boundary
#endif
// Initialize VM system
vm_init();
#if REAL_ADDRESSING
// Flag: RAM and ROM are contigously allocated from address 0
bool memory_mapped_from_zero = false;
// Make sure to map RAM & ROM at address 0 only on platforms that
// supports linker scripts to relocate the Basilisk II executable
// above 0x70000000
#if HAVE_LINKER_SCRIPT
const bool can_map_all_memory = true;
#else
const bool can_map_all_memory = false;
#endif
// Try to allocate all memory from 0x0000, if it is not known to crash
if (can_map_all_memory && (vm_acquire_mac_fixed(0, RAMSize + 0x100000) == 0)) {
D(bug("Could allocate RAM and ROM from 0x0000\n"));
memory_mapped_from_zero = true;
}
#ifndef PAGEZERO_HACK
// Otherwise, just create the Low Memory area (0x0000..0x2000)
else if (vm_acquire_mac_fixed(0, 0x2000) == 0) {
D(bug("Could allocate the Low Memory globals\n"));
lm_area_mapped = true;
}
// Exit on failure
else {
sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
#endif
#endif /* REAL_ADDRESSING */
// Create areas for Mac RAM and ROM
#if REAL_ADDRESSING
if (memory_mapped_from_zero) {
RAMBaseHost = (uint8 *)0;
ROMBaseHost = RAMBaseHost + RAMSize;
}
else
#endif
{
uint8 *ram_rom_area = (uint8 *)vm_acquire_mac(RAMSize + 0x100000);
if (ram_rom_area == VM_MAP_FAILED) {
ErrorAlert(STR_NO_MEM_ERR);
QuitEmulator();
}
RAMBaseHost = ram_rom_area;
ROMBaseHost = RAMBaseHost + RAMSize;
}
#if USE_SCRATCHMEM_SUBTERFUGE
// Allocate scratch memory
ScratchMem = (uint8 *)vm_acquire_mac(SCRATCH_MEM_SIZE);
if (ScratchMem == VM_MAP_FAILED) {
ErrorAlert(STR_NO_MEM_ERR);
QuitEmulator();
}
ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block
#endif
#if DIRECT_ADDRESSING
// RAMBaseMac shall always be zero
MEMBaseDiff = (uintptr)RAMBaseHost;
RAMBaseMac = 0;
ROMBaseMac = Host2MacAddr(ROMBaseHost);
#endif
#if REAL_ADDRESSING
RAMBaseMac = Host2MacAddr(RAMBaseHost);
ROMBaseMac = Host2MacAddr(ROMBaseHost);
#endif
D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
// Get rom file path from preferences
const char *rom_path = PrefsFindString("rom");
printf("rom_path %s\n", rom_path);
// Load Mac ROM
int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
if (rom_fd < 0) {
ErrorAlert(STR_NO_ROM_FILE_ERR);
QuitEmulator();
}
printf("%s", GetString(STR_READING_ROM_FILE));
ROMSize = lseek(rom_fd, 0, SEEK_END);
if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) {
ErrorAlert(STR_ROM_SIZE_ERR);
close(rom_fd);
QuitEmulator();
}
lseek(rom_fd, 0, SEEK_SET);
if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) {
ErrorAlert(STR_ROM_FILE_READ_ERR);
close(rom_fd);
QuitEmulator();
}
#if !EMULATED_68K
// Get CPU model
int mib[2] = {CTL_HW, HW_MODEL};
char *model;
size_t model_len;
sysctl(mib, 2, NULL, &model_len, NULL, 0);
model = (char *)malloc(model_len);
sysctl(mib, 2, model, &model_len, NULL, 0);
D(bug("Model: %s\n", model));
// Set CPU and FPU type
CPUIs68060 = false;
if (strstr(model, "020"))
CPUType = 2;
else if (strstr(model, "030"))
CPUType = 3;
else if (strstr(model, "040"))
CPUType = 4;
else if (strstr(model, "060")) {
CPUType = 4;
CPUIs68060 = true;
} else {
printf("WARNING: Cannot detect CPU type, assuming 68020\n");
CPUType = 2;
}
FPUType = 1; // NetBSD has an FPU emulation, so the FPU ought to be available at all times
TwentyFourBitAddressing = false;
#endif
printf("Initialize everything\n");
// Initialize everything
if (!InitAll(vmdir))
QuitEmulator();
D(bug("Initialization complete\n"));
#if !EMULATED_68K
// (Virtual) supervisor mode, disable interrupts
EmulatedSR = 0x2700;
#ifdef HAVE_PTHREADS
// Get handle of main thread
emul_thread = pthread_self();
#endif
// Create and install stack for signal handlers
sig_stack = malloc(SIG_STACK_SIZE);
D(bug("Signal stack at %p\n", sig_stack));
if (sig_stack == NULL) {
ErrorAlert(STR_NOT_ENOUGH_MEMORY_ERR);
QuitEmulator();
}
stack_t new_stack;
new_stack.ss_sp = sig_stack;
new_stack.ss_flags = 0;
new_stack.ss_size = SIG_STACK_SIZE;
if (sigaltstack(&new_stack, NULL) < 0) {
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
// Install SIGILL handler for emulating privileged instructions and
// executing A-Trap and EMUL_OP opcodes
sigemptyset(&sigill_sa.sa_mask); // Block virtual 68k interrupts during SIGILL handling
sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
sigaddset(&sigill_sa.sa_mask, SIGALRM);
sigill_sa.sa_handler = (void (*)(int))sigill_handler;
sigill_sa.sa_flags = SA_ONSTACK;
if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
// Install virtual 68k interrupt signal handler
sigemptyset(&sigirq_sa.sa_mask);
sigaddset(&sigirq_sa.sa_mask, SIGALRM);
sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART;
if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
#endif
#ifdef ENABLE_MON
// Setup SIGINT handler to enter mon
sigemptyset(&sigint_sa.sa_mask);
sigint_sa.sa_handler = (void (*)(int))sigint_handler;
sigint_sa.sa_flags = 0;
sigaction(SIGINT, &sigint_sa, NULL);
#endif
printf("services\n");
#ifndef USE_CPU_EMUL_SERVICES
#if defined(HAVE_PTHREADS)
// POSIX threads available, start 60Hz thread
Set_pthread_attr(&tick_thread_attr, 0);
tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
if (!tick_thread_active) {
sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
D(bug("60Hz thread started\n"));
#elif defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
// POSIX.4 timers and real-time signals available, start 60Hz timer
sigemptyset(&timer_sa.sa_mask);
timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick;
timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
struct sigevent timer_event;
timer_event.sigev_notify = SIGEV_SIGNAL;
timer_event.sigev_signo = SIG_TIMER;
if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
struct itimerspec req;
req.it_value.tv_sec = 0;
req.it_value.tv_nsec = 16625000;
req.it_interval.tv_sec = 0;
req.it_interval.tv_nsec = 16625000;
if (timer_settime(timer, 0, &req, NULL) < 0) {
sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
D(bug("60Hz timer started\n"));
#else
// Start 60Hz timer
sigemptyset(&timer_sa.sa_mask); // Block virtual 68k interrupts during SIGARLM handling
#if !EMULATED_68K
sigaddset(&timer_sa.sa_mask, SIG_IRQ);
#endif // defined(HAVE_PTHREADS)
timer_sa.sa_handler = one_tick;
timer_sa.sa_flags = SA_ONSTACK | SA_RESTART;
if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
ErrorAlert(str);
QuitEmulator();
}
struct itimerval req;
req.it_interval.tv_sec = req.it_value.tv_sec = 0;
req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
setitimer(ITIMER_REAL, &req, NULL);
#endif
#endif
#ifdef USE_PTHREADS_SERVICES
// Start XPRAM watchdog thread
memcpy(last_xpram, XPRAM, XPRAM_SIZE);
xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
D(bug("XPRAM thread started\n"));
#endif
// Start 68k and jump to ROM boot routine
D(bug("Starting emulation...\n"));
printf("Starting emulation\n");
Start680x0();
printf("Quit\n");
QuitEmulator();
return 0;
}
/*
* Quit emulator
*/
void QuitEmulator(void)
{
D(bug("QuitEmulator\n"));
#if EMULATED_68K
// Exit 680x0 emulation
Exit680x0();
#endif
#if defined(USE_CPU_EMUL_SERVICES)
// Show statistics
uint64 emulated_ticks_end = GetTicks_usec();
D(bug("%ld ticks in %ld usec = %f ticks/sec [%ld tick checks]\n",
(long)emulated_ticks_count, (long)(emulated_ticks_end - emulated_ticks_start),
emulated_ticks_count * 1000000.0 / (emulated_ticks_end - emulated_ticks_start), (long)n_check_ticks));
#elif defined(USE_PTHREADS_SERVICES)
// Stop 60Hz thread
if (tick_thread_active) {
tick_thread_cancel = true;
#ifdef HAVE_PTHREAD_CANCEL
pthread_cancel(tick_thread);
#endif
pthread_join(tick_thread, NULL);
}
#elif defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
// Stop 60Hz timer
timer_delete(timer);
#else
struct itimerval req;
req.it_interval.tv_sec = req.it_value.tv_sec = 0;
req.it_interval.tv_usec = req.it_value.tv_usec = 0;
setitimer(ITIMER_REAL, &req, NULL);
#endif
#ifdef USE_PTHREADS_SERVICES
// Stop XPRAM watchdog thread
if (xpram_thread_active) {
xpram_thread_cancel = true;
#ifdef HAVE_PTHREAD_CANCEL
pthread_cancel(xpram_thread);
#endif
pthread_join(xpram_thread, NULL);
}
#endif
// Deinitialize everything
ExitAll();
// Free ROM/RAM areas
if (RAMBaseHost != VM_MAP_FAILED) {
vm_release(RAMBaseHost, RAMSize + 0x100000);
RAMBaseHost = NULL;
ROMBaseHost = NULL;
}
#if USE_SCRATCHMEM_SUBTERFUGE
// Delete scratch memory area
if (ScratchMem != (uint8 *)VM_MAP_FAILED) {
vm_release((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE);
ScratchMem = NULL;
}
#endif
#if REAL_ADDRESSING
// Delete Low Memory area
if (lm_area_mapped)
vm_release(0, 0x2000);
#endif
// Exit VM wrappers
vm_exit();
// Exit system routines
SysExit();
// Exit preferences
PrefsExit();
// Close X11 server connection
#ifndef USE_SDL_VIDEO
if (x_display)
XCloseDisplay(x_display);
#endif
// Notify GUI we are about to leave
if (gui_connection) {