[pcsx_rearmed.git] / libpcsxcore / r3000a.c

/***************************************************************************
 *   Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team              *
 *                                                                         *
 *   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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
 ***************************************************************************/

/*
* R3000A CPU functions.
*/

#include "r3000a.h"
#include "cdrom.h"
#include "mdec.h"
#include "gte.h"

R3000Acpu *psxCpu = NULL;

int psxInit() {
	SysPrintf(_("Running PCSX Version %s (%s).\n"), PCSX_VERSION, __DATE__);

#if defined(NEW_DYNAREC) || defined(LIGHTREC)
	if (Config.Cpu == CPU_INTERPRETER) {
		psxCpu = &psxInt;
	} else psxCpu = &psxRec;
#else
	psxCpu = &psxInt;
#endif

	Log = 0;

	if (psxMemInit() == -1) return -1;

	return psxCpu->Init();
}

void psxReset() {
	psxMemReset();

	memset(&psxRegs, 0x00, sizeof(psxRegs));

	psxRegs.pc = 0xbfc00000; // Start in bootstrap

	psxRegs.CP0.r[12] = 0x10900000; // COP0 enabled | BEV = 1 | TS = 1
	psxRegs.CP0.r[15] = 0x00000002; // PRevID = Revision ID, same as R3000A

	psxCpu->Reset();

	psxHwReset();
	psxBiosInit();

	if (!Config.HLE)
		psxExecuteBios();

#ifdef EMU_LOG
	EMU_LOG("*BIOS END*\n");
#endif
	Log = 0;
}

void psxShutdown() {
	psxMemShutdown();
	psxBiosShutdown();

	psxCpu->Shutdown();
}

void psxException(u32 code, u32 bd) {
	if (!Config.HLE && ((((psxRegs.code = PSXMu32(psxRegs.pc)) >> 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
		extern void (*psxCP2[64])(void *cp2regs);
		psxCP2[psxRegs.code & 0x3f](&psxRegs.CP2D);
	}

	// Set the Cause
	psxRegs.CP0.n.Cause = (psxRegs.CP0.n.Cause & 0x300) | code;

	// 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);
	} else
		psxRegs.CP0.n.EPC = (psxRegs.pc);

	if (psxRegs.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) psxBiosException();
}

void psxBranchTest() {
	if ((psxRegs.cycle - psxNextsCounter) >= psxNextCounter)
		psxRcntUpdate();

	if (psxRegs.interrupt) {
		if ((psxRegs.interrupt & (1 << PSXINT_SIO)) && !Config.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_CDR)) { // cdr
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDR].sCycle) >= psxRegs.intCycle[PSXINT_CDR].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDR);
				cdrInterrupt();
			}
		}
		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();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_GPUDMA);
				gpuInterrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_MDECOUTDMA)) { // mdec out dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_MDECOUTDMA);
				mdec1Interrupt();
			}
		}
		if (psxRegs.interrupt & (1 << PSXINT_SPUDMA)) { // spu dma
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_SPUDMA].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_SPUDMA);
				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_CDRPLAY)) { // cdr play timing
			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRPLAY].sCycle) >= psxRegs.intCycle[PSXINT_CDRPLAY].cycle) {
				psxRegs.interrupt &= ~(1 << PSXINT_CDRPLAY);
				cdrPlayInterrupt();
			}
		}
		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)) {
		if ((psxRegs.CP0.n.Status & 0x401) == 0x401) {
#ifdef PSXCPU_LOG
			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);
		}
	}
}

void psxJumpTest() {
	if (!Config.HLE && Config.PsxOut) {
		u32 call = psxRegs.GPR.n.t1 & 0xff;
		switch (psxRegs.pc & 0x1fffff) {
			case 0xa0:
#ifdef PSXBIOS_LOG
				if (call != 0x28 && call != 0xe) {
					PSXBIOS_LOG("Bios call a0: %s (%x) %x,%x,%x,%x\n", biosA0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
#endif
				if (biosA0[call])
					biosA0[call]();
				break;
			case 0xb0:
#ifdef PSXBIOS_LOG
				if (call != 0x17 && call != 0xb) {
					PSXBIOS_LOG("Bios call b0: %s (%x) %x,%x,%x,%x\n", biosB0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
#endif
				if (biosB0[call])
					biosB0[call]();
				break;
			case 0xc0:
#ifdef PSXBIOS_LOG
				PSXBIOS_LOG("Bios call c0: %s (%x) %x,%x,%x,%x\n", biosC0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3);
#endif
				if (biosC0[call])
					biosC0[call]();
				break;
		}
	}
}

void psxExecuteBios() {
	while (psxRegs.pc != 0x80030000)
		psxCpu->ExecuteBlock();
}
Commit	Line	Data
ef79bbde P	1	/***************************************************************************
	2	* Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
	3	* *
	4	* This program is free software; you can redistribute it and/or modify *
	5	* it under the terms of the GNU General Public License as published by *
	6	* the Free Software Foundation; either version 2 of the License, or *
	7	* (at your option) any later version. *
	8	* *
	9	* This program is distributed in the hope that it will be useful, *
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
	12	* GNU General Public License for more details. *
	13	* *
	14	* You should have received a copy of the GNU General Public License *
	15	* along with this program; if not, write to the *
	16	* Free Software Foundation, Inc., *
	17	* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. *
	18	***************************************************************************/
	19
	20	/*
	21	* R3000A CPU functions.
	22	*/
	23
	24	#include "r3000a.h"
	25	#include "cdrom.h"
	26	#include "mdec.h"
	27	#include "gte.h"
	28
	29	R3000Acpu *psxCpu = NULL;
ef79bbde P	30
ef79bbde P	31	int psxInit() {
202b29d4	32	SysPrintf(_("Running PCSX Version %s (%s).\n"), PCSX_VERSION, __DATE__);
ef79bbde	33
87cc59de	34	#if defined(NEW_DYNAREC) \|\| defined(LIGHTREC)
ef79bbde P	35	if (Config.Cpu == CPU_INTERPRETER) {
	36	psxCpu = &psxInt;
	37	} else psxCpu = &psxRec;
	38	#else
	39	psxCpu = &psxInt;
	40	#endif
	41
	42	Log = 0;
	43
	44	if (psxMemInit() == -1) return -1;
	45
	46	return psxCpu->Init();
	47	}
	48
	49	void psxReset() {
ef79bbde P	50	psxMemReset();
ef79bbde P	51
76e889bc	52	memset(&psxRegs, 0x00, sizeof(psxRegs));
ef79bbde P	53
	54	psxRegs.pc = 0xbfc00000; // Start in bootstrap
	55
	56	psxRegs.CP0.r[12] = 0x10900000; // COP0 enabled \| BEV = 1 \| TS = 1
	57	psxRegs.CP0.r[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
	58
c24732c0	59	psxCpu->Reset();
c24732c0	60
ef79bbde P	61	psxHwReset();
	62	psxBiosInit();
	63
	64	if (!Config.HLE)
	65	psxExecuteBios();
	66
	67	#ifdef EMU_LOG
	68	EMU_LOG("BIOS END\n");
	69	#endif
	70	Log = 0;
	71	}
	72
	73	void psxShutdown() {
	74	psxMemShutdown();
	75	psxBiosShutdown();
	76
	77	psxCpu->Shutdown();
	78	}
	79
	80	void psxException(u32 code, u32 bd) {
62656449	81	if (!Config.HLE && ((((psxRegs.code = PSXMu32(psxRegs.pc)) >> 24) & 0xfe) == 0x4a)) {
665e364a	82	// "hokuto no ken" / "Crash Bandicot 2" ...
	83	// BIOS does not allow to return to GTE instructions
	84	// (just skips it, supposedly because it's scheduled already)
62656449	85	// so we execute it here
	86	extern void (psxCP2[64])(void cp2regs);
	87	psxCP2[psxRegs.code & 0x3f](&psxRegs.CP2D);
665e364a	88	}
665e364a	89
ef79bbde	90	// Set the Cause
48e74ef5	91	psxRegs.CP0.n.Cause = (psxRegs.CP0.n.Cause & 0x300) \| code;
ef79bbde P	92
	93	// Set the EPC & PC
	94	if (bd) {
	95	#ifdef PSXCPU_LOG
	96	PSXCPU_LOG("bd set!!!\n");
	97	#endif
	98	SysPrintf("bd set!!!\n");
	99	psxRegs.CP0.n.Cause \|= 0x80000000;
	100	psxRegs.CP0.n.EPC = (psxRegs.pc - 4);
	101	} else
	102	psxRegs.CP0.n.EPC = (psxRegs.pc);
	103
	104	if (psxRegs.CP0.n.Status & 0x400000)
	105	psxRegs.pc = 0xbfc00180;
	106	else
	107	psxRegs.pc = 0x80000080;
	108
	109	// Set the Status
	110	psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status &~0x3f) \|
	111	((psxRegs.CP0.n.Status & 0xf) << 2);
	112
ef79bbde P	113	if (Config.HLE) psxBiosException();
	114	}
	115
	116	void psxBranchTest() {
	117	if ((psxRegs.cycle - psxNextsCounter) >= psxNextCounter)
	118	psxRcntUpdate();
	119
	120	if (psxRegs.interrupt) {
d28b54b1	121	if ((psxRegs.interrupt & (1 << PSXINT_SIO)) && !Config.Sio) { // sio
	122	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SIO].sCycle) >= psxRegs.intCycle[PSXINT_SIO].cycle) {
	123	psxRegs.interrupt &= ~(1 << PSXINT_SIO);
ef79bbde P	124	sioInterrupt();
	125	}
	126	}
d28b54b1	127	if (psxRegs.interrupt & (1 << PSXINT_CDR)) { // cdr
	128	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDR].sCycle) >= psxRegs.intCycle[PSXINT_CDR].cycle) {
	129	psxRegs.interrupt &= ~(1 << PSXINT_CDR);
ef79bbde P	130	cdrInterrupt();
	131	}
	132	}
d28b54b1	133	if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
	134	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
	135	psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
ef79bbde P	136	cdrReadInterrupt();
	137	}
	138	}
d28b54b1	139	if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
	140	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUDMA].cycle) {
	141	psxRegs.interrupt &= ~(1 << PSXINT_GPUDMA);
ef79bbde P	142	gpuInterrupt();
	143	}
	144	}
d28b54b1	145	if (psxRegs.interrupt & (1 << PSXINT_MDECOUTDMA)) { // mdec out dma
	146	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle) {
	147	psxRegs.interrupt &= ~(1 << PSXINT_MDECOUTDMA);
ef79bbde P	148	mdec1Interrupt();
	149	}
	150	}
d28b54b1	151	if (psxRegs.interrupt & (1 << PSXINT_SPUDMA)) { // spu dma
	152	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_SPUDMA].cycle) {
	153	psxRegs.interrupt &= ~(1 << PSXINT_SPUDMA);
ef79bbde P	154	spuInterrupt();
	155	}
	156	}
528ad661	157	if (psxRegs.interrupt & (1 << PSXINT_MDECINDMA)) { // mdec in
	158	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECINDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECINDMA].cycle) {
	159	psxRegs.interrupt &= ~(1 << PSXINT_MDECINDMA);
	160	mdec0Interrupt();
	161	}
	162	}
57a757ce	163	if (psxRegs.interrupt & (1 << PSXINT_GPUOTCDMA)) { // gpu otc
	164	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUOTCDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUOTCDMA].cycle) {
	165	psxRegs.interrupt &= ~(1 << PSXINT_GPUOTCDMA);
	166	gpuotcInterrupt();
	167	}
	168	}
9f8b032d	169	if (psxRegs.interrupt & (1 << PSXINT_CDRDMA)) { // cdrom
	170	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRDMA].sCycle) >= psxRegs.intCycle[PSXINT_CDRDMA].cycle) {
	171	psxRegs.interrupt &= ~(1 << PSXINT_CDRDMA);
	172	cdrDmaInterrupt();
	173	}
	174	}
7f457614	175	if (psxRegs.interrupt & (1 << PSXINT_CDRPLAY)) { // cdr play timing
	176	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRPLAY].sCycle) >= psxRegs.intCycle[PSXINT_CDRPLAY].cycle) {
	177	psxRegs.interrupt &= ~(1 << PSXINT_CDRPLAY);
	178	cdrPlayInterrupt();
	179	}
	180	}
9f8b032d	181	if (psxRegs.interrupt & (1 << PSXINT_CDRLID)) { // cdr lid states
	182	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRLID].sCycle) >= psxRegs.intCycle[PSXINT_CDRLID].cycle) {
	183	psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
	184	cdrLidSeekInterrupt();
	185	}
	186	}
2b30c129	187	if (psxRegs.interrupt & (1 << PSXINT_SPU_UPDATE)) { // scheduled spu update
	188	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPU_UPDATE].sCycle) >= psxRegs.intCycle[PSXINT_SPU_UPDATE].cycle) {
	189	psxRegs.interrupt &= ~(1 << PSXINT_SPU_UPDATE);
	190	spuUpdate();
	191	}
	192	}
ef79bbde P	193	}
	194
	195	if (psxHu32(0x1070) & psxHu32(0x1074)) {
	196	if ((psxRegs.CP0.n.Status & 0x401) == 0x401) {
	197	#ifdef PSXCPU_LOG
	198	PSXCPU_LOG("Interrupt: %x %x\n", psxHu32(0x1070), psxHu32(0x1074));
	199	#endif
	200	// SysPrintf("Interrupt (%x): %x %x\n", psxRegs.cycle, psxHu32(0x1070), psxHu32(0x1074));
	201	psxException(0x400, 0);
	202	}
	203	}
	204	}
	205
	206	void psxJumpTest() {
	207	if (!Config.HLE && Config.PsxOut) {
	208	u32 call = psxRegs.GPR.n.t1 & 0xff;
	209	switch (psxRegs.pc & 0x1fffff) {
	210	case 0xa0:
	211	#ifdef PSXBIOS_LOG
	212	if (call != 0x28 && call != 0xe) {
	213	PSXBIOS_LOG("Bios call a0: %s (%x) %x,%x,%x,%x\n", biosA0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
	214	#endif
	215	if (biosA0[call])
	216	biosA0[call]();
	217	break;
	218	case 0xb0:
	219	#ifdef PSXBIOS_LOG
	220	if (call != 0x17 && call != 0xb) {
	221	PSXBIOS_LOG("Bios call b0: %s (%x) %x,%x,%x,%x\n", biosB0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3); }
	222	#endif
	223	if (biosB0[call])
	224	biosB0[call]();
	225	break;
	226	case 0xc0:
	227	#ifdef PSXBIOS_LOG
	228	PSXBIOS_LOG("Bios call c0: %s (%x) %x,%x,%x,%x\n", biosC0n[call], call, psxRegs.GPR.n.a0, psxRegs.GPR.n.a1, psxRegs.GPR.n.a2, psxRegs.GPR.n.a3);
	229	#endif
	230	if (biosC0[call])
	231	biosC0[call]();
	232	break;
	233	}
	234	}
	235	}
	236
	237	void psxExecuteBios() {
	238	while (psxRegs.pc != 0x80030000)
	239	psxCpu->ExecuteBlock();
	240	}
	241