[pcsx_rearmed.git] / libpcsxcore / psxmem.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.           *
 ***************************************************************************/

/*
* PSX memory functions.
*/

// TODO: Implement caches & cycle penalty.

#include "psxmem.h"
#include "psxmem_map.h"
#include "r3000a.h"
#include "psxhw.h"
#include "debug.h"

#include "memmap.h"

#ifdef USE_LIBRETRO_VFS
#include <streams/file_stream_transforms.h>
#endif

#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif

boolean writeok = TRUE;

#ifndef NDEBUG
#include "debug.h"
#else
void DebugCheckBP(u32 address, enum breakpoint_types type) {}
#endif

void *(*psxMapHook)(unsigned long addr, size_t size, int is_fixed,
		enum psxMapTag tag);
void (*psxUnmapHook)(void *ptr, size_t size, enum psxMapTag tag);

void *psxMap(unsigned long addr, size_t size, int is_fixed,
		enum psxMapTag tag)
{
	int flags = MAP_PRIVATE | MAP_ANONYMOUS;
	int try_ = 0;
	unsigned long mask;
	void *req, *ret;

retry:
	if (psxMapHook != NULL) {
		ret = psxMapHook(addr, size, 0, tag);
		if (ret == NULL)
			return NULL;
	}
	else {
		/* avoid MAP_FIXED, it overrides existing mappings.. */
		/* if (is_fixed)
			flags |= MAP_FIXED; */

		req = (void *)addr;
		ret = mmap(req, size, PROT_READ | PROT_WRITE, flags, -1, 0);
		if (ret == MAP_FAILED)
			return NULL;
	}

	if (addr != 0 && ret != (void *)addr) {
		SysMessage("psxMap: warning: wanted to map @%08x, got %p\n",
			addr, ret);

		if (is_fixed) {
			psxUnmap(ret, size, tag);
			return NULL;
		}

		if (((addr ^ (unsigned long)ret) & ~0xff000000l) && try_ < 2)
		{
			psxUnmap(ret, size, tag);

			// try to use similarly aligned memory instead
			// (recompiler needs this)
			mask = try_ ? 0xffff : 0xffffff;
			addr = ((unsigned long)ret + mask) & ~mask;
			try_++;
			goto retry;
		}
	}

	return ret;
}

void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
{
	if (psxUnmapHook != NULL) {
		psxUnmapHook(ptr, size, tag);
		return;
	}

	if (ptr)
		munmap(ptr, size);
}

s8 *psxM = NULL; // Kernel & User Memory (2 Meg)
s8 *psxP = NULL; // Parallel Port (64K)
s8 *psxR = NULL; // BIOS ROM (512K)
s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K)

u8 **psxMemWLUT = NULL;
u8 **psxMemRLUT = NULL;

/*  Playstation Memory Map (from Playstation doc by Joshua Walker)
0x0000_0000-0x0000_ffff		Kernel (64K)
0x0001_0000-0x001f_ffff		User Memory (1.9 Meg)

0x1f00_0000-0x1f00_ffff		Parallel Port (64K)

0x1f80_0000-0x1f80_03ff		Scratch Pad (1024 bytes)

0x1f80_1000-0x1f80_2fff		Hardware Registers (8K)

0x1fc0_0000-0x1fc7_ffff		BIOS (512K)

0x8000_0000-0x801f_ffff		Kernel and User Memory Mirror (2 Meg) Cached
0x9fc0_0000-0x9fc7_ffff		BIOS Mirror (512K) Cached

0xa000_0000-0xa01f_ffff		Kernel and User Memory Mirror (2 Meg) Uncached
0xbfc0_0000-0xbfc7_ffff		BIOS Mirror (512K) Uncached
*/

int psxMemInit() {
	int i;

	psxMemRLUT = (u8 **)malloc(0x10000 * sizeof(void *));
	psxMemWLUT = (u8 **)malloc(0x10000 * sizeof(void *));
	memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
	memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));

	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
	if (psxM == NULL)
		psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
	if (psxM == NULL) {
		SysMessage(_("mapping main RAM failed"));
		return -1;
	}

	psxP = &psxM[0x200000];
	psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);

	if (psxMemRLUT == NULL || psxMemWLUT == NULL || 
	    psxR == NULL || psxP == NULL || psxH == NULL) {
		SysMessage(_("Error allocating memory!"));
		psxMemShutdown();
		return -1;
	}

// MemR
	for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];

	memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *));
	memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *));

	psxMemRLUT[0x1f00] = (u8 *)psxP;
	psxMemRLUT[0x1f80] = (u8 *)psxH;

	for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16];

	memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));

// MemW
	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];

	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));

	// Don't allow writes to PIO Expansion region (psxP) to take effect.
	// NOTE: Not sure if this is needed to fix any games but seems wise,
	//       seeing as some games do read from PIO as part of copy-protection
	//       check. (See fix in psxMemReset() regarding psxP region reads).
	psxMemWLUT[0x1f00] = NULL;
	psxMemWLUT[0x1f80] = (u8 *)psxH;

	return 0;
}

void psxMemReset() {
	FILE *f = NULL;
	char bios[1024];

	memset(psxM, 0, 0x00200000);
	memset(psxP, 0xff, 0x00010000);

	Config.HLE = TRUE;

	if (strcmp(Config.Bios, "HLE") != 0) {
		sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);
		f = fopen(bios, "rb");

		if (f == NULL) {
			SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios);
			memset(psxR, 0, 0x80000);
		} else {
			if (fread(psxR, 1, 0x80000, f) == 0x80000) {
				Config.HLE = FALSE;
			} else {
				SysMessage(_("The selected BIOS:\"%s\" is of wrong size. Enabling HLE Bios!\n"), bios);
			}
			fclose(f);
		}
	}
}

void psxMemShutdown() {
	psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL;
	psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL;
	psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL;

	free(psxMemRLUT); psxMemRLUT = NULL;
	free(psxMemWLUT); psxMemWLUT = NULL;
}

u8 psxMemRead8(u32 mem) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			return psxHu8(mem);
		else
			return psxHwRead8(mem);
	} else {
		p = (char *)(psxMemRLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R1);
			return *(u8 *)(p + (mem & 0xffff));
		} else {
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err lb %8.8lx\n", mem);
#endif
			return 0xFF;
		}
	}
}

u16 psxMemRead16(u32 mem) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			return psxHu16(mem);
		else
			return psxHwRead16(mem);
	} else {
		p = (char *)(psxMemRLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R2);
			return SWAPu16(*(u16 *)(p + (mem & 0xffff)));
		} else {
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err lh %8.8lx\n", mem);
#endif
			return 0xFFFF;
		}
	}
}

u32 psxMemRead32(u32 mem) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			return psxHu32(mem);
		else
			return psxHwRead32(mem);
	} else {
		p = (char *)(psxMemRLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R4);
			return SWAPu32(*(u32 *)(p + (mem & 0xffff)));
		} else {
#ifdef PSXMEM_LOG
			if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); }
#endif
			return 0xFFFFFFFF;
		}
	}
}

void psxMemWrite8(u32 mem, u8 value) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			psxHu8(mem) = value;
		else
			psxHwWrite8(mem, value);
	} else {
		p = (char *)(psxMemWLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W1);
			*(u8 *)(p + (mem & 0xffff)) = value;
#ifndef DRC_DISABLE
			psxCpu->Clear((mem & (~3)), 1);
#endif
		} else {
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err sb %8.8lx\n", mem);
#endif
		}
	}
}

void psxMemWrite16(u32 mem, u16 value) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			psxHu16ref(mem) = SWAPu16(value);
		else
			psxHwWrite16(mem, value);
	} else {
		p = (char *)(psxMemWLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W2);
			*(u16 *)(p + (mem & 0xffff)) = SWAPu16(value);
#ifndef DRC_DISABLE
			psxCpu->Clear((mem & (~3)), 1);
#endif
		} else {
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err sh %8.8lx\n", mem);
#endif
		}
	}
}

void psxMemWrite32(u32 mem, u32 value) {
	char *p;
	u32 t;

//	if ((mem&0x1fffff) == 0x71E18 || value == 0x48088800) SysPrintf("t2fix!!\n");
	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			psxHu32ref(mem) = SWAPu32(value);
		else
			psxHwWrite32(mem, value);
	} else {
		p = (char *)(psxMemWLUT[t]);
		if (p != NULL) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W4);
			*(u32 *)(p + (mem & 0xffff)) = SWAPu32(value);
#ifndef DRC_DISABLE
			psxCpu->Clear(mem, 1);
#endif
		} else {
			if (mem != 0xfffe0130) {
#ifndef DRC_DISABLE
				if (!writeok)
					psxCpu->Clear(mem, 1);
#endif

#ifdef PSXMEM_LOG
				if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); }
#endif
			} else {
				int i;

				switch (value) {
					case 0x800: case 0x804:
						if (writeok == 0) break;
						writeok = 0;
						memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *));
						memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *));
						memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *));
						/* Required for icache interpreter otherwise Armored Core won't boot on icache interpreter */
						psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_ISOLATED, NULL);
						break;
					case 0x00: case 0x1e988:
						if (writeok == 1) break;
						writeok = 1;
						for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16];
						memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
						memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
						/* Dynarecs might take this opportunity to flush their code cache */
						psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
						break;
					default:
#ifdef PSXMEM_LOG
						PSXMEM_LOG("unk %8.8lx = %x\n", mem, value);
#endif
						break;
				}
			}
		}
	}
}

void *psxMemPointer(u32 mem) {
	char *p;
	u32 t;

	t = mem >> 16;
	if (t == 0x1f80 || t == 0x9f80 || t == 0xbf80) {
		if ((mem & 0xffff) < 0x400)
			return (void *)&psxH[mem];
		else
			return NULL;
	} else {
		p = (char *)(psxMemWLUT[t]);
		if (p != NULL) {
			return (void *)(p + (mem & 0xffff));
		}
		return NULL;
	}
}
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	* PSX memory functions.
	22	*/
	23
	24	// TODO: Implement caches & cycle penalty.
	25
	26	#include "psxmem.h"
87e5b45f	27	#include "psxmem_map.h"
ef79bbde P	28	#include "r3000a.h"
ef79bbde P	29	#include "psxhw.h"
fc8145b7	30	#include "debug.h"
ce0e7ac9	31
ce0e7ac9	32	#include "memmap.h"
ef79bbde	33
226a5691	34	#ifdef USE_LIBRETRO_VFS
	35	#include <streams/file_stream_transforms.h>
	36	#endif
	37
ef79bbde P	38	#ifndef MAP_ANONYMOUS
	39	#define MAP_ANONYMOUS MAP_ANON
	40	#endif
	41
7a811716	42	boolean writeok = TRUE;
7a811716	43
9361a5aa EC	44	#ifndef NDEBUG
	45	#include "debug.h"
	46	#else
11a43034	47	void DebugCheckBP(u32 address, enum breakpoint_types type) {}
	48	#endif
	49
87e5b45f	50	void (psxMapHook)(unsigned long addr, size_t size, int is_fixed,
	51	enum psxMapTag tag);
	52	void (psxUnmapHook)(void ptr, size_t size, enum psxMapTag tag);
	53
	54	void *psxMap(unsigned long addr, size_t size, int is_fixed,
	55	enum psxMapTag tag)
	56	{
a62012a7	57	int flags = MAP_PRIVATE \| MAP_ANONYMOUS;
5644b26c	58	int try_ = 0;
b0dd9956	59	unsigned long mask;
87e5b45f	60	void req, ret;
87e5b45f	61
b0dd9956	62	retry:
b0dd9956	63	if (psxMapHook != NULL) {
85f23982	64	ret = psxMapHook(addr, size, 0, tag);
	65	if (ret == NULL)
	66	return NULL;
	67	}
	68	else {
	69	/* avoid MAP_FIXED, it overrides existing mappings.. */
	70	/* if (is_fixed)
	71	flags \|= MAP_FIXED; */
	72
	73	req = (void *)addr;
	74	ret = mmap(req, size, PROT_READ \| PROT_WRITE, flags, -1, 0);
	75	if (ret == MAP_FAILED)
	76	return NULL;
b0dd9956	77	}
87e5b45f	78
b0dd9956	79	if (addr != 0 && ret != (void *)addr) {
	80	SysMessage("psxMap: warning: wanted to map @%08x, got %p\n",
	81	addr, ret);
	82
0069615f	83	if (is_fixed) {
	84	psxUnmap(ret, size, tag);
	85	return NULL;
	86	}
	87
5644b26c	88	if (((addr ^ (unsigned long)ret) & ~0xff000000l) && try_ < 2)
b0dd9956	89	{
	90	psxUnmap(ret, size, tag);
	91
	92	// try to use similarly aligned memory instead
	93	// (recompiler needs this)
5644b26c	94	mask = try_ ? 0xffff : 0xffffff;
	95	addr = ((unsigned long)ret + mask) & ~mask;
	96	try_++;
b0dd9956	97	goto retry;
	98	}
	99	}
87e5b45f	100
	101	return ret;
	102	}
	103
	104	void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
	105	{
	106	if (psxUnmapHook != NULL) {
	107	psxUnmapHook(ptr, size, tag);
	108	return;
	109	}
	110
88901dd2	111	if (ptr)
88901dd2	112	munmap(ptr, size);
87e5b45f	113	}
87e5b45f	114
ef79bbde P	115	s8 *psxM = NULL; // Kernel & User Memory (2 Meg)
	116	s8 *psxP = NULL; // Parallel Port (64K)
	117	s8 *psxR = NULL; // BIOS ROM (512K)
	118	s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K)
	119
	120	u8 **psxMemWLUT = NULL;
	121	u8 **psxMemRLUT = NULL;
	122
	123	/* Playstation Memory Map (from Playstation doc by Joshua Walker)
	124	0x0000_0000-0x0000_ffff Kernel (64K)
	125	0x0001_0000-0x001f_ffff User Memory (1.9 Meg)
	126
	127	0x1f00_0000-0x1f00_ffff Parallel Port (64K)
	128
	129	0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes)
	130
	131	0x1f80_1000-0x1f80_2fff Hardware Registers (8K)
	132
	133	0x1fc0_0000-0x1fc7_ffff BIOS (512K)
	134
	135	0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached
	136	0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached
	137
	138	0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached
	139	0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached
	140	*/
	141
	142	int psxMemInit() {
	143	int i;
	144
	145	psxMemRLUT = (u8 *)malloc(0x10000 sizeof(void *));
	146	psxMemWLUT = (u8 *)malloc(0x10000 sizeof(void *));
	147	memset(psxMemRLUT, 0, 0x10000 * sizeof(void *));
	148	memset(psxMemWLUT, 0, 0x10000 * sizeof(void *));
	149
a62012a7	150	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
a4874585	151	if (psxM == NULL)
f23d3386	152	psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
87e5b45f	153	if (psxM == NULL) {
a327ad27	154	SysMessage(_("mapping main RAM failed"));
	155	return -1;
	156	}
ef79bbde P	157
ef79bbde P	158	psxP = &psxM[0x200000];
a62012a7 T	159	psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
a62012a7 T	160	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
ef79bbde P	161
ef79bbde P	162	if (psxMemRLUT == NULL \|\| psxMemWLUT == NULL \|\|
6d760c92	163	psxR == NULL \|\| psxP == NULL \|\| psxH == NULL) {
ef79bbde	164	SysMessage(_("Error allocating memory!"));
88901dd2	165	psxMemShutdown();
ef79bbde P	166	return -1;
	167	}
	168
	169	// MemR
	170	for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	171
	172	memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *));
	173	memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *));
	174
	175	psxMemRLUT[0x1f00] = (u8 *)psxP;
	176	psxMemRLUT[0x1f80] = (u8 *)psxH;
	177
	178	for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16];
	179
	180	memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	181	memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	182
	183	// MemW
	184	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	185
	186	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	187	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
	188
6e4e5efb	189	// Don't allow writes to PIO Expansion region (psxP) to take effect.
	190	// NOTE: Not sure if this is needed to fix any games but seems wise,
	191	// seeing as some games do read from PIO as part of copy-protection
	192	// check. (See fix in psxMemReset() regarding psxP region reads).
	193	psxMemWLUT[0x1f00] = NULL;
ef79bbde P	194	psxMemWLUT[0x1f80] = (u8 *)psxH;
	195
	196	return 0;
	197	}
	198
	199	void psxMemReset() {
	200	FILE *f = NULL;
	201	char bios[1024];
	202
	203	memset(psxM, 0, 0x00200000);
23643ee7	204	memset(psxP, 0xff, 0x00010000);
ef79bbde	205
9361a5aa EC	206	Config.HLE = TRUE;
9361a5aa EC	207
ef79bbde P	208	if (strcmp(Config.Bios, "HLE") != 0) {
ef79bbde P	209	sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);
226a5691	210	f = fopen(bios, "rb");
ef79bbde P	211
	212	if (f == NULL) {
	213	SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios);
	214	memset(psxR, 0, 0x80000);
ef79bbde	215	} else {
9361a5aa EC	216	if (fread(psxR, 1, 0x80000, f) == 0x80000) {
	217	Config.HLE = FALSE;
	218	} else {
	219	SysMessage(_("The selected BIOS:\"%s\" is of wrong size. Enabling HLE Bios!\n"), bios);
	220	}
ef79bbde	221	fclose(f);
ef79bbde	222	}
9361a5aa	223	}
ef79bbde P	224	}
	225
	226	void psxMemShutdown() {
88901dd2	227	psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL;
	228	psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL;
	229	psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL;
ef79bbde	230
88901dd2	231	free(psxMemRLUT); psxMemRLUT = NULL;
88901dd2	232	free(psxMemWLUT); psxMemWLUT = NULL;
ef79bbde P	233	}
ef79bbde P	234
ef79bbde P	235	u8 psxMemRead8(u32 mem) {
	236	char *p;
	237	u32 t;
	238
	239	t = mem >> 16;
9dd7d179	240	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	241	if ((mem & 0xffff) < 0x400)
ef79bbde P	242	return psxHu8(mem);
	243	else
	244	return psxHwRead8(mem);
	245	} else {
	246	p = (char *)(psxMemRLUT[t]);
	247	if (p != NULL) {
	248	if (Config.Debug)
	249	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R1);
	250	return (u8 )(p + (mem & 0xffff));
	251	} else {
	252	#ifdef PSXMEM_LOG
	253	PSXMEM_LOG("err lb %8.8lx\n", mem);
	254	#endif
e86be808	255	return 0xFF;
ef79bbde P	256	}
	257	}
	258	}
	259
	260	u16 psxMemRead16(u32 mem) {
	261	char *p;
	262	u32 t;
	263
	264	t = mem >> 16;
9dd7d179	265	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	266	if ((mem & 0xffff) < 0x400)
ef79bbde P	267	return psxHu16(mem);
	268	else
	269	return psxHwRead16(mem);
	270	} else {
	271	p = (char *)(psxMemRLUT[t]);
	272	if (p != NULL) {
	273	if (Config.Debug)
	274	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R2);
	275	return SWAPu16((u16 )(p + (mem & 0xffff)));
	276	} else {
	277	#ifdef PSXMEM_LOG
	278	PSXMEM_LOG("err lh %8.8lx\n", mem);
	279	#endif
e86be808	280	return 0xFFFF;
ef79bbde P	281	}
	282	}
	283	}
	284
	285	u32 psxMemRead32(u32 mem) {
	286	char *p;
	287	u32 t;
	288
	289	t = mem >> 16;
9dd7d179	290	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	291	if ((mem & 0xffff) < 0x400)
ef79bbde P	292	return psxHu32(mem);
	293	else
	294	return psxHwRead32(mem);
	295	} else {
	296	p = (char *)(psxMemRLUT[t]);
	297	if (p != NULL) {
	298	if (Config.Debug)
	299	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R4);
	300	return SWAPu32((u32 )(p + (mem & 0xffff)));
	301	} else {
	302	#ifdef PSXMEM_LOG
	303	if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); }
	304	#endif
e86be808	305	return 0xFFFFFFFF;
ef79bbde P	306	}
	307	}
	308	}
	309
	310	void psxMemWrite8(u32 mem, u8 value) {
	311	char *p;
	312	u32 t;
	313
	314	t = mem >> 16;
9dd7d179	315	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	316	if ((mem & 0xffff) < 0x400)
ef79bbde P	317	psxHu8(mem) = value;
	318	else
	319	psxHwWrite8(mem, value);
	320	} else {
	321	p = (char *)(psxMemWLUT[t]);
	322	if (p != NULL) {
	323	if (Config.Debug)
	324	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W1);
	325	(u8 )(p + (mem & 0xffff)) = value;
630b122b	326	#ifndef DRC_DISABLE
ef79bbde P	327	psxCpu->Clear((mem & (~3)), 1);
	328	#endif
	329	} else {
	330	#ifdef PSXMEM_LOG
	331	PSXMEM_LOG("err sb %8.8lx\n", mem);
	332	#endif
	333	}
	334	}
	335	}
	336
	337	void psxMemWrite16(u32 mem, u16 value) {
	338	char *p;
	339	u32 t;
	340
	341	t = mem >> 16;
9dd7d179	342	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	343	if ((mem & 0xffff) < 0x400)
ef79bbde P	344	psxHu16ref(mem) = SWAPu16(value);
	345	else
	346	psxHwWrite16(mem, value);
	347	} else {
	348	p = (char *)(psxMemWLUT[t]);
	349	if (p != NULL) {
	350	if (Config.Debug)
	351	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W2);
	352	(u16 )(p + (mem & 0xffff)) = SWAPu16(value);
630b122b	353	#ifndef DRC_DISABLE
3e31e934	354	psxCpu->Clear((mem & (~3)), 1);
ef79bbde P	355	#endif
	356	} else {
	357	#ifdef PSXMEM_LOG
	358	PSXMEM_LOG("err sh %8.8lx\n", mem);
	359	#endif
	360	}
	361	}
	362	}
	363
	364	void psxMemWrite32(u32 mem, u32 value) {
	365	char *p;
	366	u32 t;
630b122b	367
ef79bbde P	368	// if ((mem&0x1fffff) == 0x71E18 \|\| value == 0x48088800) SysPrintf("t2fix!!\n");
ef79bbde P	369	t = mem >> 16;
9dd7d179	370	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
630b122b	371	if ((mem & 0xffff) < 0x400)
ef79bbde P	372	psxHu32ref(mem) = SWAPu32(value);
	373	else
	374	psxHwWrite32(mem, value);
	375	} else {
	376	p = (char *)(psxMemWLUT[t]);
	377	if (p != NULL) {
	378	if (Config.Debug)
	379	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W4);
	380	(u32 )(p + (mem & 0xffff)) = SWAPu32(value);
630b122b	381	#ifndef DRC_DISABLE
ef79bbde P	382	psxCpu->Clear(mem, 1);
	383	#endif
	384	} else {
	385	if (mem != 0xfffe0130) {
630b122b	386	#ifndef DRC_DISABLE
ef79bbde P	387	if (!writeok)
	388	psxCpu->Clear(mem, 1);
	389	#endif
	390
	391	#ifdef PSXMEM_LOG
	392	if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); }
	393	#endif
	394	} else {
	395	int i;
	396
	397	switch (value) {
	398	case 0x800: case 0x804:
630b122b	399	if (writeok == 0) break;
630b122b	400	writeok = 0;
ef79bbde P	401	memset(psxMemWLUT + 0x0000, 0, 0x80 * sizeof(void *));
	402	memset(psxMemWLUT + 0x8000, 0, 0x80 * sizeof(void *));
	403	memset(psxMemWLUT + 0xa000, 0, 0x80 * sizeof(void *));
630b122b	404	/* Required for icache interpreter otherwise Armored Core won't boot on icache interpreter */
7a811716	405	psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_ISOLATED, NULL);
ef79bbde P	406	break;
ef79bbde P	407	case 0x00: case 0x1e988:
630b122b	408	if (writeok == 1) break;
630b122b	409	writeok = 1;
ef79bbde P	410	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16];
	411	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	412	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
7a811716	413	/* Dynarecs might take this opportunity to flush their code cache */
7a811716	414	psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
ef79bbde P	415	break;
	416	default:
	417	#ifdef PSXMEM_LOG
	418	PSXMEM_LOG("unk %8.8lx = %x\n", mem, value);
	419	#endif
	420	break;
	421	}
	422	}
	423	}
	424	}
	425	}
	426
	427	void *psxMemPointer(u32 mem) {
	428	char *p;
	429	u32 t;
	430
	431	t = mem >> 16;
9dd7d179	432	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	433	if ((mem & 0xffff) < 0x400)
ef79bbde P	434	return (void *)&psxH[mem];
	435	else
	436	return NULL;
	437	} else {
	438	p = (char *)(psxMemWLUT[t]);
	439	if (p != NULL) {
	440	return (void *)(p + (mem & 0xffff));
	441	}
	442	return NULL;
	443	}
	444	}