[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 MAP_FAILED;
	}
	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 ret;
	}

	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 MAP_FAILED;
		}

		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;

	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
	if (psxM == MAP_FAILED)
		psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
	if (psxM == MAP_FAILED) {
		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 (psxR == MAP_FAILED || psxH == MAP_FAILED) {
		SysMessage(_("Error allocating memory!"));
		psxMemShutdown();
		return -1;
	}

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

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

	memset(psxMemRLUT, 0xff, 0x10000 * sizeof(void *));
	memset(psxMemWLUT, 0xff, 0x10000 * sizeof(void *));

// 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] = INVALID_PTR;
	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 != INVALID_PTR) {
			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 != INVALID_PTR) {
			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 != INVALID_PTR) {
			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 != INVALID_PTR) {
			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 != INVALID_PTR) {
			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 != INVALID_PTR) {
			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, 0xff, 0x80 * sizeof(void *));
						memset(psxMemWLUT + 0x8000, 0xff, 0x80 * sizeof(void *));
						memset(psxMemWLUT + 0xa000, 0xff, 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 != INVALID_PTR) {
			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);
85f23982	65	if (ret == NULL)
b012a437	66	return MAP_FAILED;
85f23982	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)
b012a437	76	return ret;
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) {
0069615f	84	psxUnmap(ret, size, tag);
b012a437	85	return MAP_FAILED;
0069615f	86	}
0069615f	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
a62012a7	145	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
b012a437	146	if (psxM == MAP_FAILED)
f23d3386	147	psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
b012a437	148	if (psxM == MAP_FAILED) {
a327ad27	149	SysMessage(_("mapping main RAM failed"));
	150	return -1;
	151	}
ef79bbde P	152
ef79bbde P	153	psxP = &psxM[0x200000];
a62012a7 T	154	psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
a62012a7 T	155	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
ef79bbde	156
b012a437	157	if (psxR == MAP_FAILED \|\| psxH == MAP_FAILED) {
ef79bbde	158	SysMessage(_("Error allocating memory!"));
88901dd2	159	psxMemShutdown();
ef79bbde P	160	return -1;
	161	}
	162
b012a437 PC	163	psxMemRLUT = (u8 *)malloc(0x10000 sizeof(void *));
	164	psxMemWLUT = (u8 *)malloc(0x10000 sizeof(void *));
	165
	166	if (psxMemRLUT == NULL \|\| psxMemWLUT == NULL) {
	167	SysMessage(_("Error allocating memory!"));
	168	psxMemShutdown();
	169	return -1;
	170	}
	171
	172	memset(psxMemRLUT, 0xff, 0x10000 * sizeof(void *));
	173	memset(psxMemWLUT, 0xff, 0x10000 * sizeof(void *));
	174
ef79bbde P	175	// MemR
	176	for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	177
	178	memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *));
	179	memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *));
	180
	181	psxMemRLUT[0x1f00] = (u8 *)psxP;
	182	psxMemRLUT[0x1f80] = (u8 *)psxH;
	183
	184	for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16];
	185
	186	memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	187	memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	188
	189	// MemW
	190	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	191
	192	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	193	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
	194
6e4e5efb	195	// Don't allow writes to PIO Expansion region (psxP) to take effect.
	196	// NOTE: Not sure if this is needed to fix any games but seems wise,
	197	// seeing as some games do read from PIO as part of copy-protection
	198	// check. (See fix in psxMemReset() regarding psxP region reads).
b012a437	199	psxMemWLUT[0x1f00] = INVALID_PTR;
ef79bbde P	200	psxMemWLUT[0x1f80] = (u8 *)psxH;
	201
	202	return 0;
	203	}
	204
	205	void psxMemReset() {
	206	FILE *f = NULL;
	207	char bios[1024];
	208
	209	memset(psxM, 0, 0x00200000);
23643ee7	210	memset(psxP, 0xff, 0x00010000);
ef79bbde	211
9361a5aa EC	212	Config.HLE = TRUE;
9361a5aa EC	213
ef79bbde P	214	if (strcmp(Config.Bios, "HLE") != 0) {
ef79bbde P	215	sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);
226a5691	216	f = fopen(bios, "rb");
ef79bbde P	217
	218	if (f == NULL) {
	219	SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios);
	220	memset(psxR, 0, 0x80000);
ef79bbde	221	} else {
9361a5aa EC	222	if (fread(psxR, 1, 0x80000, f) == 0x80000) {
	223	Config.HLE = FALSE;
	224	} else {
	225	SysMessage(_("The selected BIOS:\"%s\" is of wrong size. Enabling HLE Bios!\n"), bios);
	226	}
ef79bbde	227	fclose(f);
ef79bbde	228	}
9361a5aa	229	}
ef79bbde P	230	}
	231
	232	void psxMemShutdown() {
88901dd2	233	psxUnmap(psxM, 0x00210000, MAP_TAG_RAM); psxM = NULL;
	234	psxUnmap(psxH, 0x10000, MAP_TAG_OTHER); psxH = NULL;
	235	psxUnmap(psxR, 0x80000, MAP_TAG_OTHER); psxR = NULL;
ef79bbde	236
88901dd2	237	free(psxMemRLUT); psxMemRLUT = NULL;
88901dd2	238	free(psxMemWLUT); psxMemWLUT = NULL;
ef79bbde P	239	}
ef79bbde P	240
ef79bbde P	241	u8 psxMemRead8(u32 mem) {
	242	char *p;
	243	u32 t;
	244
	245	t = mem >> 16;
9dd7d179	246	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	247	if ((mem & 0xffff) < 0x400)
ef79bbde P	248	return psxHu8(mem);
	249	else
	250	return psxHwRead8(mem);
	251	} else {
	252	p = (char *)(psxMemRLUT[t]);
b012a437	253	if (p != INVALID_PTR) {
ef79bbde P	254	if (Config.Debug)
	255	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R1);
	256	return (u8 )(p + (mem & 0xffff));
	257	} else {
	258	#ifdef PSXMEM_LOG
	259	PSXMEM_LOG("err lb %8.8lx\n", mem);
	260	#endif
e86be808	261	return 0xFF;
ef79bbde P	262	}
	263	}
	264	}
	265
	266	u16 psxMemRead16(u32 mem) {
	267	char *p;
	268	u32 t;
	269
	270	t = mem >> 16;
9dd7d179	271	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	272	if ((mem & 0xffff) < 0x400)
ef79bbde P	273	return psxHu16(mem);
	274	else
	275	return psxHwRead16(mem);
	276	} else {
	277	p = (char *)(psxMemRLUT[t]);
b012a437	278	if (p != INVALID_PTR) {
ef79bbde P	279	if (Config.Debug)
	280	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R2);
	281	return SWAPu16((u16 )(p + (mem & 0xffff)));
	282	} else {
	283	#ifdef PSXMEM_LOG
	284	PSXMEM_LOG("err lh %8.8lx\n", mem);
	285	#endif
e86be808	286	return 0xFFFF;
ef79bbde P	287	}
	288	}
	289	}
	290
	291	u32 psxMemRead32(u32 mem) {
	292	char *p;
	293	u32 t;
	294
	295	t = mem >> 16;
9dd7d179	296	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	297	if ((mem & 0xffff) < 0x400)
ef79bbde P	298	return psxHu32(mem);
	299	else
	300	return psxHwRead32(mem);
	301	} else {
	302	p = (char *)(psxMemRLUT[t]);
b012a437	303	if (p != INVALID_PTR) {
ef79bbde P	304	if (Config.Debug)
	305	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R4);
	306	return SWAPu32((u32 )(p + (mem & 0xffff)));
	307	} else {
	308	#ifdef PSXMEM_LOG
	309	if (writeok) { PSXMEM_LOG("err lw %8.8lx\n", mem); }
	310	#endif
e86be808	311	return 0xFFFFFFFF;
ef79bbde P	312	}
	313	}
	314	}
	315
	316	void psxMemWrite8(u32 mem, u8 value) {
	317	char *p;
	318	u32 t;
	319
	320	t = mem >> 16;
9dd7d179	321	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	322	if ((mem & 0xffff) < 0x400)
ef79bbde P	323	psxHu8(mem) = value;
	324	else
	325	psxHwWrite8(mem, value);
	326	} else {
	327	p = (char *)(psxMemWLUT[t]);
b012a437	328	if (p != INVALID_PTR) {
ef79bbde P	329	if (Config.Debug)
	330	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W1);
	331	(u8 )(p + (mem & 0xffff)) = value;
630b122b	332	#ifndef DRC_DISABLE
ef79bbde P	333	psxCpu->Clear((mem & (~3)), 1);
	334	#endif
	335	} else {
	336	#ifdef PSXMEM_LOG
	337	PSXMEM_LOG("err sb %8.8lx\n", mem);
	338	#endif
	339	}
	340	}
	341	}
	342
	343	void psxMemWrite16(u32 mem, u16 value) {
	344	char *p;
	345	u32 t;
	346
	347	t = mem >> 16;
9dd7d179	348	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	349	if ((mem & 0xffff) < 0x400)
ef79bbde P	350	psxHu16ref(mem) = SWAPu16(value);
	351	else
	352	psxHwWrite16(mem, value);
	353	} else {
	354	p = (char *)(psxMemWLUT[t]);
b012a437	355	if (p != INVALID_PTR) {
ef79bbde P	356	if (Config.Debug)
	357	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W2);
	358	(u16 )(p + (mem & 0xffff)) = SWAPu16(value);
630b122b	359	#ifndef DRC_DISABLE
3e31e934	360	psxCpu->Clear((mem & (~3)), 1);
ef79bbde P	361	#endif
	362	} else {
	363	#ifdef PSXMEM_LOG
	364	PSXMEM_LOG("err sh %8.8lx\n", mem);
	365	#endif
	366	}
	367	}
	368	}
	369
	370	void psxMemWrite32(u32 mem, u32 value) {
	371	char *p;
	372	u32 t;
630b122b	373
ef79bbde P	374	// if ((mem&0x1fffff) == 0x71E18 \|\| value == 0x48088800) SysPrintf("t2fix!!\n");
ef79bbde P	375	t = mem >> 16;
9dd7d179	376	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
630b122b	377	if ((mem & 0xffff) < 0x400)
ef79bbde P	378	psxHu32ref(mem) = SWAPu32(value);
	379	else
	380	psxHwWrite32(mem, value);
	381	} else {
	382	p = (char *)(psxMemWLUT[t]);
b012a437	383	if (p != INVALID_PTR) {
ef79bbde P	384	if (Config.Debug)
	385	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W4);
	386	(u32 )(p + (mem & 0xffff)) = SWAPu32(value);
630b122b	387	#ifndef DRC_DISABLE
ef79bbde P	388	psxCpu->Clear(mem, 1);
	389	#endif
	390	} else {
	391	if (mem != 0xfffe0130) {
630b122b	392	#ifndef DRC_DISABLE
ef79bbde P	393	if (!writeok)
	394	psxCpu->Clear(mem, 1);
	395	#endif
	396
	397	#ifdef PSXMEM_LOG
	398	if (writeok) { PSXMEM_LOG("err sw %8.8lx\n", mem); }
	399	#endif
	400	} else {
	401	int i;
	402
	403	switch (value) {
	404	case 0x800: case 0x804:
630b122b	405	if (writeok == 0) break;
630b122b	406	writeok = 0;
b012a437 PC	407	memset(psxMemWLUT + 0x0000, 0xff, 0x80 * sizeof(void *));
	408	memset(psxMemWLUT + 0x8000, 0xff, 0x80 * sizeof(void *));
	409	memset(psxMemWLUT + 0xa000, 0xff, 0x80 * sizeof(void *));
630b122b	410	/* Required for icache interpreter otherwise Armored Core won't boot on icache interpreter */
7a811716	411	psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_ISOLATED, NULL);
ef79bbde P	412	break;
ef79bbde P	413	case 0x00: case 0x1e988:
630b122b	414	if (writeok == 1) break;
630b122b	415	writeok = 1;
ef79bbde P	416	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16];
	417	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	418	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
7a811716	419	/* Dynarecs might take this opportunity to flush their code cache */
7a811716	420	psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
ef79bbde P	421	break;
	422	default:
	423	#ifdef PSXMEM_LOG
	424	PSXMEM_LOG("unk %8.8lx = %x\n", mem, value);
	425	#endif
	426	break;
	427	}
	428	}
	429	}
	430	}
	431	}
	432
	433	void *psxMemPointer(u32 mem) {
	434	char *p;
	435	u32 t;
	436
	437	t = mem >> 16;
9dd7d179	438	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
9dd7d179	439	if ((mem & 0xffff) < 0x400)
ef79bbde P	440	return (void *)&psxH[mem];
	441	else
	442	return NULL;
	443	} else {
	444	p = (char *)(psxMemWLUT[t]);
b012a437	445	if (p != INVALID_PTR) {
ef79bbde P	446	return (void *)(p + (mem & 0xffff));
	447	}
	448	return NULL;
	449	}
	450	}