void m68k_go (int may_quit)
{
gui_purge_events();
#if !defined(DREAMCAST) || defined(DEBUG_UAE4ALL)
if (in_m68k_go || !may_quit) {
#ifdef DEBUG_UAE4ALL
puts("Bug! m68k_go is not reentrant.\n");
#endif
return;
}
in_m68k_go++;
#endif
g_emulator.quit_program = RunStateReset;
for (;;) {
if (g_emulator.quit_program > RunStateNormal) {
if (g_emulator.quit_program == RunStateExit)
break;
g_emulator.quit_program = RunStateNormal;
g_emulator.reset_all_systems ();
customreset ();
check_prefs_changed_cpu ();
sound_default_evtime ();
/* We may have been restoring state, but we're done now. */
handle_active_events ();
if (mispcflags)
do_specialties (0);
}
m68k_run();
}
#if !defined(DREAMCAST) || defined(DEBUG_UAE4ALL)
in_m68k_go--;
#endif
#ifdef DEBUG_UAE4ALL
puts("BYE?");
#endif
}
static void m68k_run (void)
{
uae4all_reset ();
unsigned cycles, cycles_actual=M68KCONTEXT.cycles_counter;
for (;;) {
#ifdef DEBUG_M68K
dbg_cycle(m68k_fetch(m68k_get_pc(),0));
m68k_emulate(1);
#else
uae4all_prof_start(0);
cycles = nextevent - currcycle;
switch (timeslice_mode) {
case 3:
cycles>>=6;
break;
case 2:
cycles>>=7;
break;
case 1:
cycles=(cycles>>8)+(cycles>>9);
break;
default:
cycles>>=8;
break;
}
#define NDEBUG_CYCLES
#ifdef DEBUG_CYCLES
static unsigned next_cycles = 60000000;
if (M68KCONTEXT.cycles_counter > next_cycles) {
next_cycles += 100000;
printf("cycles=%9d|%03i|%03i, pc=%.6x\n", M68KCONTEXT.cycles_counter, cycles, IO_CYCLE, _68k_getpc());
}
if (M68KCONTEXT.cycles_counter > 80000000) {
// exit(0);
}
if (M68KCONTEXT.cycles_counter >= 500000000) {
// do_debug = 1;
}
#endif
#if defined(FAME_INTERRUPTS_SECURE_PATCH) && defined(FAME_INTERRUPTS_PATCH)
if (uae4all_go_interrupt)
m68k_emulate(FAME_INTERRUPTS_PATCH);
else
#endif
m68k_emulate(cycles);
uae4all_prof_end(0);
#endif
#if 0 // def FAME_INTERRUPTS_PATCH
if (uae4all_go_interrupt)
{
/*if (verb)*/ printf("uae4all_go_interrupt: %02x\n", uae4all_go_interrupt);
M68KCONTEXT.interrupts[0]=uae4all_go_interrupt;
M68KCONTEXT.execinfo&=0xFF67;
uae4all_go_interrupt=0;
m68k_irq_update(0);
}
#endif
uae4all_prof_start(1);
cycles=(M68KCONTEXT.cycles_counter-cycles_actual) * cycles_factor;
#ifdef DEBUG_INTERRUPTS
dbgf("cycles=%i (%i) -> PC=%.6x\n",cycles>>8,nextevent - currcycle, _68k_getpc());
#endif
#ifdef NO_SHORT_EVENTS
#ifdef PROTECT_INFINITE
unsigned cuentalo=0;
#endif
do {
#endif
do_cycles(cycles);
if (mispcflags)
if (do_specialties (cycles))
return;
#ifndef DEBUG_M68K
#ifdef NO_SHORT_EVENTS
cycles=2048;
#ifdef PROTECT_INFINITE
cuentalo++;
if (cuentalo>1024) {
g_emulator.quit_program=RunStateReset;
return;
}
#endif
} while((nextevent - currcycle)<=2048);
#endif
cycles_actual=M68KCONTEXT.cycles_counter;
#endif
uae4all_prof_end(1);
}
}
static void m68k_run (void)
{
uae4all_reset ();
unsigned cycles, cycles_actual=M68KCONTEXT.cycles_counter;
for (;;) {
while (pause_program > 0)
{
usleep(200000);
}
#ifdef DEBUG_M68K
dbg_cycle(m68k_fetch(m68k_get_pc(),0));
m68k_emulate(1);
#else
uae4all_prof_start(0);
cycles = nextevent - currcycle;
switch (timeslice_mode) {
case 3: cycles>>=6; break;
case 2: cycles>>=7; break;
case 1: cycles=(cycles>>8)+(cycles>>9); break;
default: cycles>>=8; break;
}
#ifdef DEBUG_TIMESLICE
unsigned ts=cycles;
#endif
#if defined(FAME_INTERRUPTS_SECURE_PATCH) && defined(FAME_INTERRUPTS_PATCH)
if (uae4all_go_interrupt)
m68k_emulate(FAME_INTERRUPTS_PATCH);
else
#endif
m68k_emulate(cycles);
uae4all_prof_end(0);
#endif
#if 0 // def FAME_INTERRUPTS_PATCH
if (uae4all_go_interrupt)
{
/*if (verb)*/ printf("uae4all_go_interrupt: %02x\n", uae4all_go_interrupt);
M68KCONTEXT.interrupts[0]=uae4all_go_interrupt;
M68KCONTEXT.execinfo&=0xFF67;
uae4all_go_interrupt=0;
m68k_irq_update(0);
}
#endif
#ifdef DEBUG_M68K
if (M68KCONTEXT.execinfo & 0x0080)
mispcflags|=SPCFLAG_STOP;
#endif
uae4all_prof_start(1);
//cycles=((unsigned)(((double)(M68KCONTEXT.cycles_counter-cycles_actual))*cycles_factor))<<8;
cycles=(M68KCONTEXT.cycles_counter-cycles_actual) * cycles_factor;
#ifdef DEBUG_INTERRUPTS
dbgf("cycles=%i (%i) -> PC=%.6x\n",cycles>>8,nextevent - currcycle, _68k_getpc());
#endif
#ifdef NO_SHORT_EVENTS
#ifdef PROTECT_INFINITE
unsigned cuentalo=0;
#endif
do{
#endif
do_cycles(cycles);
if (mispcflags)
if (do_specialties (cycles))
return;
#ifndef DEBUG_M68K
#ifdef NO_SHORT_EVENTS
cycles=2048;
#ifdef PROTECT_INFINITE
cuentalo++;
if (cuentalo>1024)
{
quit_program=2;
return;
}
#endif
}while((nextevent - currcycle)<=2048);
#endif
cycles_actual=M68KCONTEXT.cycles_counter;
#endif
uae4all_prof_end(1);
}
}