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Simplify IRQ handling a bit

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Hopefully this doesn't break everything.
This commit is contained in:
beeanyew
2021-07-17 16:01:44 +02:00
parent 4723af7f0e
commit df0c88bf4b
1 changed files with 16 additions and 40 deletions
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56
emulator.c
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@@ -115,37 +115,24 @@ uint16_t irq_delay = 0;
unsigned int amiga_reset=0, amiga_reset_last=0;
unsigned int do_reset=0;
pthread_cond_t cond1 = PTHREAD_COND_INITIALIZER;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
void *ipl_task(void *args) {
printf("IPL thread running\n");
uint16_t old_irq = 0;
uint32_t value;
pthread_mutex_lock(&lock);
while (1) {
value = *(gpio + 13);
if (value & (1 << PIN_TXN_IN_PROGRESS))
goto noppers;
if (!(value & (1 << PIN_IPL_ZERO)) || ipl_enabled[amiga_emulated_ipl()]) {
old_irq = irq_delay;
//NOP
if (!irq) {
M68K_END_TIMESLICE;
NOP
irq = 1;
}
//usleep(0);
}
else {
if (irq) {
if (old_irq) {
old_irq--;
}
else {
irq = 0;
}
M68K_END_TIMESLICE;
NOP
//usleep(0);
pthread_cond_wait(&cond1, &lock);
irq = 0;
}
}
if(do_reset==0)
@@ -157,7 +144,7 @@ void *ipl_task(void *args) {
if(amiga_reset==0)
{
printf("Amiga Reset is down...\n");
do_reset=1;
do_reset = 1;
M68K_END_TIMESLICE;
}
else
@@ -167,25 +154,13 @@ void *ipl_task(void *args) {
}
}
/*if (gayle_ide_enabled) {
if (((gayle_int & 0x80) || gayle_a4k_int) && (get_ide(0)->drive[0].intrq || get_ide(0)->drive[1].intrq)) {
//get_ide(0)->drive[0].intrq = 0;
gayleirq = 1;
M68K_END_TIMESLICE;
}
else
gayleirq = 0;
}*/
//usleep(0);
//NOP NOP
noppers:
NOP NOP NOP NOP NOP NOP NOP NOP
//NOP NOP NOP NOP NOP NOP NOP NOP
//NOP NOP NOP NOP NOP NOP NOP NOP
/*NOP NOP NOP NOP NOP NOP NOP NOP
NOP NOP NOP NOP NOP NOP NOP NOP
NOP NOP NOP NOP NOP NOP NOP NOP*/
if (end_signal)
goto end_ipl_thread;
}
end_ipl_thread:
pthread_mutex_unlock(&lock);
return args;
}
@@ -233,7 +208,7 @@ cpu_loop:
}
}
while (irq) {
if (irq) {
last_irq = ((inline_read_status_reg() & 0xe000) >> 13);
uint8_t amiga_irq = amiga_emulated_ipl();
if (amiga_irq >= last_irq) {
@@ -243,7 +218,8 @@ cpu_loop:
last_last_irq = last_irq;
M68K_SET_IRQ(last_irq);
}
m68k_execute(state, 50);
pthread_cond_signal(&cond1);
m68k_execute(state, 5);
}
if (!irq && last_last_irq != 0) {
M68K_SET_IRQ(0);