#include "cdrom.h"
#include "mdec.h"
#include "gte.h"
+#include "psxinterpreter.h"
+#include "../include/compiler_features.h"
R3000Acpu *psxCpu = NULL;
+#ifdef DRC_DISABLE
psxRegisters psxRegs;
+#endif
int psxInit() {
- SysPrintf(_("Running PCSX Version %s (%s).\n"), PACKAGE_VERSION, __DATE__);
+ SysPrintf(_("Running PCSX Version %s (%s).\n"), PCSX_VERSION, __DATE__);
-#ifdef PSXREC
+#ifndef DRC_DISABLE
if (Config.Cpu == CPU_INTERPRETER) {
psxCpu = &psxInt;
} else psxCpu = &psxRec;
#else
+ Config.Cpu = CPU_INTERPRETER;
psxCpu = &psxInt;
#endif
}
void psxReset() {
- psxCpu->Reset();
-
psxMemReset();
memset(&psxRegs, 0, sizeof(psxRegs));
psxRegs.pc = 0xbfc00000; // Start in bootstrap
- psxRegs.CP0.r[12] = 0x10900000; // COP0 enabled | BEV = 1 | TS = 1
+ psxRegs.CP0.r[12] = 0x10600000; // COP0 enabled | BEV = 1 | TS = 1
psxRegs.CP0.r[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
+ if (Config.HLE)
+ psxRegs.CP0.n.Status |= 1u << 30; // COP2 enabled
+
+ psxCpu->ApplyConfig();
+ psxCpu->Reset();
psxHwReset();
psxBiosInit();
- if (!Config.HLE)
+ BiosLikeGPUSetup(); // a bit of a hack but whatever
+
+ if (!Config.HLE) {
psxExecuteBios();
+ if (psxRegs.pc == 0x80030000 && !Config.SlowBoot)
+ BiosBootBypass();
+ }
#ifdef EMU_LOG
EMU_LOG("*BIOS END*\n");
}
void psxShutdown() {
- psxMemShutdown();
psxBiosShutdown();
psxCpu->Shutdown();
+
+ psxMemShutdown();
}
-void psxException(u32 code, u32 bd) {
+// cp0 is passed separately for lightrec to be less messy
+void psxException(u32 cause, u32 bd, psxCP0Regs *cp0) {
+ u32 opcode = intFakeFetch(psxRegs.pc);
+
+ if (unlikely(!Config.HLE && ((((opcode) >> 24) & 0xfe) == 0x4a))) {
+ // "hokuto no ken" / "Crash Bandicot 2" ...
+ // BIOS does not allow to return to GTE instructions
+ // (just skips it, supposedly because it's scheduled already)
+ // so we execute it here
+ psxCP2Regs *cp2 = (void *)(cp0 + 1);
+ psxRegs.code = opcode;
+ psxCP2[opcode & 0x3f](cp2);
+ }
+
// Set the Cause
- psxRegs.CP0.n.Cause = code;
+ cp0->n.Cause = (cp0->n.Cause & 0x300) | cause;
// Set the EPC & PC
if (bd) {
#ifdef PSXCPU_LOG
PSXCPU_LOG("bd set!!!\n");
#endif
- SysPrintf("bd set!!!\n");
- psxRegs.CP0.n.Cause |= 0x80000000;
- psxRegs.CP0.n.EPC = (psxRegs.pc - 4);
+ cp0->n.Cause |= 0x80000000;
+ cp0->n.EPC = (psxRegs.pc - 4);
} else
- psxRegs.CP0.n.EPC = (psxRegs.pc);
+ cp0->n.EPC = (psxRegs.pc);
- if (psxRegs.CP0.n.Status & 0x400000)
+ if (cp0->n.Status & 0x400000)
psxRegs.pc = 0xbfc00180;
else
psxRegs.pc = 0x80000080;
// Set the Status
- psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status &~0x3f) |
- ((psxRegs.CP0.n.Status & 0xf) << 2);
-
- if (!Config.HLE && (((PSXMu32(psxRegs.CP0.n.EPC) >> 24) & 0xfe) == 0x4a)) {
- // "hokuto no ken" / "Crash Bandicot 2" ... fix
- PSXMu32ref(psxRegs.CP0.n.EPC)&= SWAPu32(~0x02000000);
- }
+ cp0->n.Status = (cp0->n.Status & ~0x3f) | ((cp0->n.Status & 0x0f) << 2);
if (Config.HLE) psxBiosException();
}
psxRcntUpdate();
if (psxRegs.interrupt) {
- if ((psxRegs.interrupt & (1 << PSXINT_SIO)) && !Config.Sio) { // sio
+ if ((psxRegs.interrupt & (1 << PSXINT_SIO))) { // sio
if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SIO].sCycle) >= psxRegs.intCycle[PSXINT_SIO].cycle) {
psxRegs.interrupt &= ~(1 << PSXINT_SIO);
sioInterrupt();
if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
- cdrReadInterrupt();
+ cdrPlayReadInterrupt();
}
}
if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
spuInterrupt();
}
}
+ if (psxRegs.interrupt & (1 << PSXINT_MDECINDMA)) { // mdec in
+ if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECINDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECINDMA].cycle) {
+ psxRegs.interrupt &= ~(1 << PSXINT_MDECINDMA);
+ mdec0Interrupt();
+ }
+ }
+ if (psxRegs.interrupt & (1 << PSXINT_GPUOTCDMA)) { // gpu otc
+ if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUOTCDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUOTCDMA].cycle) {
+ psxRegs.interrupt &= ~(1 << PSXINT_GPUOTCDMA);
+ gpuotcInterrupt();
+ }
+ }
+ if (psxRegs.interrupt & (1 << PSXINT_CDRDMA)) { // cdrom
+ if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRDMA].sCycle) >= psxRegs.intCycle[PSXINT_CDRDMA].cycle) {
+ psxRegs.interrupt &= ~(1 << PSXINT_CDRDMA);
+ cdrDmaInterrupt();
+ }
+ }
+ if (psxRegs.interrupt & (1 << PSXINT_CDRLID)) { // cdr lid states
+ if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRLID].sCycle) >= psxRegs.intCycle[PSXINT_CDRLID].cycle) {
+ psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
+ cdrLidSeekInterrupt();
+ }
+ }
+ if (psxRegs.interrupt & (1 << PSXINT_SPU_UPDATE)) { // scheduled spu update
+ if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPU_UPDATE].sCycle) >= psxRegs.intCycle[PSXINT_SPU_UPDATE].cycle) {
+ psxRegs.interrupt &= ~(1 << PSXINT_SPU_UPDATE);
+ spuUpdate();
+ }
+ }
}
if (psxHu32(0x1070) & psxHu32(0x1074)) {
PSXCPU_LOG("Interrupt: %x %x\n", psxHu32(0x1070), psxHu32(0x1074));
#endif
// SysPrintf("Interrupt (%x): %x %x\n", psxRegs.cycle, psxHu32(0x1070), psxHu32(0x1074));
- psxException(0x400, 0);
+ psxException(0x400, 0, &psxRegs.CP0);
}
}
}
}
void psxExecuteBios() {
- while (psxRegs.pc != 0x80030000)
- psxCpu->ExecuteBlock();
+ int i;
+ for (i = 0; i < 5000000; i++) {
+ psxCpu->ExecuteBlock(EXEC_CALLER_BOOT);
+ if ((psxRegs.pc & 0xff800000) == 0x80000000)
+ break;
+ }
+ if (psxRegs.pc != 0x80030000)
+ SysPrintf("non-standard BIOS detected (%d, %08x)\n", i, psxRegs.pc);
}