[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;
#ifdef DRC_DISABLE
psxRegisters psxRegs;
#endif

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

#ifndef DRC_DISABLE
	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, 0, 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;
41e82ad4	30	#ifdef DRC_DISABLE
ef79bbde	31	psxRegisters psxRegs;
41e82ad4	32	#endif
ef79bbde P	33
	34	int psxInit() {
	35	SysPrintf(_("Running PCSX Version %s (%s).\n"), PACKAGE_VERSION, __DATE__);
	36
41e82ad4	37	#ifndef DRC_DISABLE
ef79bbde P	38	if (Config.Cpu == CPU_INTERPRETER) {
	39	psxCpu = &psxInt;
	40	} else psxCpu = &psxRec;
	41	#else
	42	psxCpu = &psxInt;
	43	#endif
	44
	45	Log = 0;
	46
	47	if (psxMemInit() == -1) return -1;
	48
	49	return psxCpu->Init();
	50	}
	51
	52	void psxReset() {
ef79bbde P	53	psxMemReset();
	54
	55	memset(&psxRegs, 0, sizeof(psxRegs));
	56
	57	psxRegs.pc = 0xbfc00000; // Start in bootstrap
	58
	59	psxRegs.CP0.r[12] = 0x10900000; // COP0 enabled \| BEV = 1 \| TS = 1
	60	psxRegs.CP0.r[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
	61
c24732c0	62	psxCpu->Reset();
c24732c0	63
ef79bbde P	64	psxHwReset();
	65	psxBiosInit();
	66
	67	if (!Config.HLE)
	68	psxExecuteBios();
	69
	70	#ifdef EMU_LOG
	71	EMU_LOG("BIOS END\n");
	72	#endif
	73	Log = 0;
	74	}
	75
	76	void psxShutdown() {
	77	psxMemShutdown();
	78	psxBiosShutdown();
	79
	80	psxCpu->Shutdown();
	81	}
	82
	83	void psxException(u32 code, u32 bd) {
62656449	84	if (!Config.HLE && ((((psxRegs.code = PSXMu32(psxRegs.pc)) >> 24) & 0xfe) == 0x4a)) {
665e364a	85	// "hokuto no ken" / "Crash Bandicot 2" ...
	86	// BIOS does not allow to return to GTE instructions
	87	// (just skips it, supposedly because it's scheduled already)
62656449	88	// so we execute it here
	89	extern void (psxCP2[64])(void cp2regs);
	90	psxCP2[psxRegs.code & 0x3f](&psxRegs.CP2D);
665e364a	91	}
665e364a	92
ef79bbde	93	// Set the Cause
48e74ef5	94	psxRegs.CP0.n.Cause = (psxRegs.CP0.n.Cause & 0x300) \| code;
ef79bbde P	95
	96	// Set the EPC & PC
	97	if (bd) {
	98	#ifdef PSXCPU_LOG
	99	PSXCPU_LOG("bd set!!!\n");
	100	#endif
	101	SysPrintf("bd set!!!\n");
	102	psxRegs.CP0.n.Cause \|= 0x80000000;
	103	psxRegs.CP0.n.EPC = (psxRegs.pc - 4);
	104	} else
	105	psxRegs.CP0.n.EPC = (psxRegs.pc);
	106
	107	if (psxRegs.CP0.n.Status & 0x400000)
	108	psxRegs.pc = 0xbfc00180;
	109	else
	110	psxRegs.pc = 0x80000080;
	111
	112	// Set the Status
	113	psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status &~0x3f) \|
	114	((psxRegs.CP0.n.Status & 0xf) << 2);
	115
ef79bbde P	116	if (Config.HLE) psxBiosException();
	117	}
	118
	119	void psxBranchTest() {
	120	if ((psxRegs.cycle - psxNextsCounter) >= psxNextCounter)
	121	psxRcntUpdate();
	122
	123	if (psxRegs.interrupt) {
d28b54b1	124	if ((psxRegs.interrupt & (1 << PSXINT_SIO)) && !Config.Sio) { // sio
	125	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SIO].sCycle) >= psxRegs.intCycle[PSXINT_SIO].cycle) {
	126	psxRegs.interrupt &= ~(1 << PSXINT_SIO);
ef79bbde P	127	sioInterrupt();
	128	}
	129	}
d28b54b1	130	if (psxRegs.interrupt & (1 << PSXINT_CDR)) { // cdr
	131	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDR].sCycle) >= psxRegs.intCycle[PSXINT_CDR].cycle) {
	132	psxRegs.interrupt &= ~(1 << PSXINT_CDR);
ef79bbde P	133	cdrInterrupt();
	134	}
	135	}
d28b54b1	136	if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
	137	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
	138	psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
ef79bbde P	139	cdrReadInterrupt();
	140	}
	141	}
d28b54b1	142	if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
	143	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUDMA].cycle) {
	144	psxRegs.interrupt &= ~(1 << PSXINT_GPUDMA);
ef79bbde P	145	gpuInterrupt();
	146	}
	147	}
d28b54b1	148	if (psxRegs.interrupt & (1 << PSXINT_MDECOUTDMA)) { // mdec out dma
	149	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECOUTDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECOUTDMA].cycle) {
	150	psxRegs.interrupt &= ~(1 << PSXINT_MDECOUTDMA);
ef79bbde P	151	mdec1Interrupt();
	152	}
	153	}
d28b54b1	154	if (psxRegs.interrupt & (1 << PSXINT_SPUDMA)) { // spu dma
	155	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPUDMA].sCycle) >= psxRegs.intCycle[PSXINT_SPUDMA].cycle) {
	156	psxRegs.interrupt &= ~(1 << PSXINT_SPUDMA);
ef79bbde P	157	spuInterrupt();
	158	}
	159	}
528ad661	160	if (psxRegs.interrupt & (1 << PSXINT_MDECINDMA)) { // mdec in
	161	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_MDECINDMA].sCycle) >= psxRegs.intCycle[PSXINT_MDECINDMA].cycle) {
	162	psxRegs.interrupt &= ~(1 << PSXINT_MDECINDMA);
	163	mdec0Interrupt();
	164	}
	165	}
57a757ce	166	if (psxRegs.interrupt & (1 << PSXINT_GPUOTCDMA)) { // gpu otc
	167	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_GPUOTCDMA].sCycle) >= psxRegs.intCycle[PSXINT_GPUOTCDMA].cycle) {
	168	psxRegs.interrupt &= ~(1 << PSXINT_GPUOTCDMA);
	169	gpuotcInterrupt();
	170	}
	171	}
9f8b032d	172	if (psxRegs.interrupt & (1 << PSXINT_CDRDMA)) { // cdrom
	173	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRDMA].sCycle) >= psxRegs.intCycle[PSXINT_CDRDMA].cycle) {
	174	psxRegs.interrupt &= ~(1 << PSXINT_CDRDMA);
	175	cdrDmaInterrupt();
	176	}
	177	}
7f457614	178	if (psxRegs.interrupt & (1 << PSXINT_CDRPLAY)) { // cdr play timing
	179	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRPLAY].sCycle) >= psxRegs.intCycle[PSXINT_CDRPLAY].cycle) {
	180	psxRegs.interrupt &= ~(1 << PSXINT_CDRPLAY);
	181	cdrPlayInterrupt();
	182	}
	183	}
9f8b032d	184	if (psxRegs.interrupt & (1 << PSXINT_CDRLID)) { // cdr lid states
	185	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDRLID].sCycle) >= psxRegs.intCycle[PSXINT_CDRLID].cycle) {
	186	psxRegs.interrupt &= ~(1 << PSXINT_CDRLID);
	187	cdrLidSeekInterrupt();
	188	}
	189	}
2b30c129	190	if (psxRegs.interrupt & (1 << PSXINT_SPU_UPDATE)) { // scheduled spu update
	191	if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_SPU_UPDATE].sCycle) >= psxRegs.intCycle[PSXINT_SPU_UPDATE].cycle) {
	192	psxRegs.interrupt &= ~(1 << PSXINT_SPU_UPDATE);
	193	spuUpdate();
	194	}
	195	}
ef79bbde P	196	}
	197
	198	if (psxHu32(0x1070) & psxHu32(0x1074)) {
	199	if ((psxRegs.CP0.n.Status & 0x401) == 0x401) {
	200	#ifdef PSXCPU_LOG
	201	PSXCPU_LOG("Interrupt: %x %x\n", psxHu32(0x1070), psxHu32(0x1074));
	202	#endif
	203	// SysPrintf("Interrupt (%x): %x %x\n", psxRegs.cycle, psxHu32(0x1070), psxHu32(0x1074));
	204	psxException(0x400, 0);
	205	}
	206	}
	207	}
	208
	209	void psxJumpTest() {
	210	if (!Config.HLE && Config.PsxOut) {
	211	u32 call = psxRegs.GPR.n.t1 & 0xff;
	212	switch (psxRegs.pc & 0x1fffff) {
	213	case 0xa0:
	214	#ifdef PSXBIOS_LOG
	215	if (call != 0x28 && call != 0xe) {
	216	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); }
	217	#endif
	218	if (biosA0[call])
	219	biosA0[call]();
	220	break;
	221	case 0xb0:
	222	#ifdef PSXBIOS_LOG
	223	if (call != 0x17 && call != 0xb) {
	224	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); }
	225	#endif
	226	if (biosB0[call])
	227	biosB0[call]();
	228	break;
	229	case 0xc0:
	230	#ifdef PSXBIOS_LOG
	231	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);
	232	#endif
	233	if (biosC0[call])
	234	biosC0[call]();
	235	break;
	236	}
	237	}
	238	}
	239
	240	void psxExecuteBios() {
	241	while (psxRegs.pc != 0x80030000)
	242	psxCpu->ExecuteBlock();
	243	}
	244