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Copy pathEventScheduler.cpp
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234 lines (202 loc) · 5.51 KB
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#include<windows.h>
#include<stdio.h>
#include"WinMain.h"
#include"EmuMain.h"
#include"audiodll.h"
#include"cpumain.h"
#defineRSP_DLIST_EVENT0x1
#defineRSP_EVENT0x2
#defineSI_DMA_EVENT0x3
#definePI_DMA_EVENT0x4
#defineAI_DMA_EVENT0x5
#defineCHECK_MI_EVENT0x6
#defineAID_DMA_EVENT0x7
#defineMAXEVENTS30
externu32 PiInterrupt, CountInterrupt, VsyncInterrupt;
externu32 VsyncTime;
externint InterruptTime;
typedefstruct {
u32 Time;
u32 EventType;
u32 extra[8];
} EventList;
EventList EList [MAXEVENTS];
u32 ListCnt = 0;
int NextEvent;
externu32 PiInterrupt;
//extern u32 LastAudio;
externu32 LastAint;
// VsyncTime = MIN(MIN(CountInterrupt,PiInterrupt),VsyncInterrupt);
voidPrintInterruptStatus () {
Debug (0, "Instructions: %08X", instructions);
Debug (0, "VsyncTime: %08X", VsyncTime);
Debug (0, "VsyncInterrupt: %08X", VsyncInterrupt);
Debug (0, "PiInterrupt: %08X", PiInterrupt);
Debug (0, "CountInterrupt: %08X", CountInterrupt);
// Debug (0, "LastAudio: %08X - LastAint: %08X", LastAudio, LastAint);
for (int x = 0; x < MAXEVENTS; x++) {
if (EList[x].EventType)
switch (EList[x].EventType) {
caseRSP_DLIST_EVENT:
Debug (0, "Pending DLIST Event: %08X", EList[x].Time);
break;
caseRSP_EVENT:
Debug (0, "Pending RSP Event: %08X", EList[x].Time);
break;
caseSI_DMA_EVENT:
Debug (0, "Pending SI Event: %08X", EList[x].Time);
break;
casePI_DMA_EVENT:
Debug (0, "Pending PI Event: %08X", EList[x].Time);
break;
caseAI_DMA_EVENT:
Debug (0, "Pending AI Event: %08X", EList[x].Time);
break;
}
}
}
voidScheduleNextEvent () {
u32 LastTime = 0;
staticint cnt = 0;
if (ListCnt == 0) {
NextEvent = -1;
return;
}
LastTime = 0xFFFFFFFF;
instructions = (VsyncTime - InterruptTime);
for (int x = 0; x < MAXEVENTS; x++) {
if (EList[x].EventType)
if (LastTime > (EList[x].Time-instructions)) {
NextEvent = x;
LastTime = (EList[x].Time-instructions);
}
}
if (LastTime == 0xFFFFFFFF) {
__asm int3;
return;
}
PiInterrupt = EList[NextEvent].Time;
voidGetNextInterrupt ();
GetNextInterrupt ();
// VsyncTime = MIN(MIN(CountInterrupt,PiInterrupt),VsyncInterrupt);
//Debug (0, "PiInterrupt set to: %08X, VsyncTime set to: %08X", PiInterrupt, VsyncTime);
//Debug (0, "VSyncInterrupt: %08X", VsyncInterrupt);
}
voidClearEventList () {
ListCnt = 0;
memset (EList, 0, sizeof(EventList)*10);
PiInterrupt = -1;
NextEvent = -1;
/*for (int x = 0; x < MAXEVENTS; x++) {
EList[x].Time = -1;
}*/
}
voidScheduleEvent (u32 EventType, u32 Time, u32 size, void *extra) {
int FreeEvent;
FreeEvent = 0;
while ((EList[FreeEvent].EventType != 0) && (FreeEvent < MAXEVENTS))
FreeEvent++;
if (FreeEvent == MAXEVENTS) {
FreeEvent = 0;
while (EList[FreeEvent].EventType != 5)
FreeEvent++;
Debug (0, "FreeEvent is maxed... hacking... ");
//__asm int 3; // Assert that this will never be true...
}
//if (Time & 0x3)
// __asm int 3;
instructions = (VsyncTime - InterruptTime);
EList[FreeEvent].EventType = EventType;
EList[FreeEvent].Time = (instructions + Time)+incrementer;
if (extra != NULL)
memcpy (EList[FreeEvent].extra, extra, size); // It might slow down emulation a lil
else
memset (EList[FreeEvent].extra, 0, sizeof(u32)*8);
/*
switch (EList[FreeEvent].EventType) {
case PI_DMA_EVENT:
Debug (0, "PI Interrupt Scheduled");
//Debug (0, "SI DMA Event Scheduled: Time: %08X, RealTime: %08X, COUNT: %08X", Time, EList[NextEvent].Time, instructions);
break;
}*/
ListCnt++;
ScheduleNextEvent ();
}
externu8 *SI;
externu8 *PI;
externu8 *AI;
// Returns the InterruptNeeded flags for the scheduled event...
u32 aibuff = 0;
u32ExecuteEvent () {
u32 retVal = 0;
u32 Event = EList[NextEvent].EventType;
if (NextEvent == -1)
return0;
switch (Event) {
caseRSP_EVENT:
SignalRSP((u32 *)EList[NextEvent].extra);
break;
casePI_DMA_EVENT:
externu32 ChangeProtectionLevel;
externu32 romsize;
if (EList[NextEvent].extra) {
u32 *DMAINFO = (u32 *)EList[NextEvent].extra;
if (ChangeProtectionLevel == PAGE_NOACCESS)
VirtualProtect((void *)(valloc+0x10000000), romsize, PAGE_READONLY, &ChangeProtectionLevel); // Ok.. next read is bad
for (u32 x = 0; x <= DMAINFO[2]; x++) {
*(u8 *)returnMemPointer((DMAINFO[0]+x)^3) = *(u8 *)returnMemPointer((DMAINFO[1]+x)^3);
}
}
//Debug (2, "PI Done");
((u32 *)PI)[4] &= ~0x3;
retVal = PI_INTERRUPT;
break;
caseSI_DMA_EVENT:
((u32 *)SI)[6] &= ~0x1; // Clear the DMA Busy Flag
retVal = SI_INTERRUPT;
break;
caseCHECK_MI_EVENT:
retVal = 0;
break;
caseAID_DMA_EVENT:
voidAiInterrupt ();
EList[NextEvent].EventType = 0; // Clears this event
instructions = (VsyncTime - InterruptTime);
MmuRegs[0x9] = instructions;
// snddll.AiCallBack();
AiInterrupt ();
retVal = AI_INTERRUPT;
ListCnt--;
ScheduleNextEvent ();
return retVal;
break;
caseAI_DMA_EVENT: {
externu8 *AI;
voidAiCallBack ();
AiCallBack ();
retVal = 0;
}
break;
default:
Debug (0, "Unknown Task Executed!");
retVal = 0;
}
EList[NextEvent].EventType = 0; // Clears this event
ListCnt--;
ScheduleNextEvent ();
return retVal;
}
voidSaveEvents (FILE *fp) {
fwrite (&PiInterrupt, 1, sizeof(u32), fp);
fwrite (EList, MAXEVENTS, sizeof(EventList), fp);
}
voidLoadEvents (FILE *fp) {
fread (&PiInterrupt, 1, sizeof(u32), fp);
fread (EList, MAXEVENTS, sizeof(EventList), fp);
ListCnt = 0;
for (int x = 0; x < MAXEVENTS; x++) {
if (EList[x].EventType != 0)
ListCnt++;
}
ScheduleNextEvent ();
}