[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"
#define DebugCheckBP(...)

#include "lightrec/mem.h"
#include "memmap.h"

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

#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif

static void * psxMapDefault(unsigned long addr, size_t size,
			    int is_fixed, enum psxMapTag tag)
{
	void *ptr;
#if !P_HAVE_MMAP
	ptr = calloc(1, size);
	return ptr ? ptr : MAP_FAILED;
#else
	int flags = MAP_PRIVATE | MAP_ANONYMOUS;

	ptr = mmap((void *)(uintptr_t)addr, size,
		    PROT_READ | PROT_WRITE, flags, -1, 0);
#ifdef MADV_HUGEPAGE
	if (size >= 2*1024*1024) {
		if (ptr != MAP_FAILED && ((uintptr_t)ptr & (2*1024*1024 - 1))) {
			// try to manually realign assuming bottom-to-top alloc
			munmap(ptr, size);
			addr = (uintptr_t)ptr & ~(2*1024*1024 - 1);
			ptr = mmap((void *)(uintptr_t)addr, size,
				PROT_READ | PROT_WRITE, flags, -1, 0);
		}
		if (ptr != MAP_FAILED)
			madvise(ptr, size, MADV_HUGEPAGE);
	}
#endif
	return ptr;
#endif
}

static void psxUnmapDefault(void *ptr, size_t size, enum psxMapTag tag)
{
#if !P_HAVE_MMAP
	free(ptr);
#else
	munmap(ptr, size);
#endif
}

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

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

retry:
	ret = psxMapHook(addr, size, 0, tag);
	if (ret == NULL)
		return MAP_FAILED;

	if (addr != 0 && ret != (void *)(uintptr_t)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)(uintptr_t)ret) & ~0xff000000l) && try_ < 2)
		{
			psxUnmap(ret, size, tag);

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

	return ret;
}

void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
{
	psxUnmapHook(ptr, size, tag);
}

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
*/

static int psxMemInitMap(void)
{
	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"));
		psxM = NULL;
		return -1;
	}
	psxP = &psxM[0x200000];

	psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
	if (psxH == MAP_FAILED) {
		SysMessage(_("Error allocating memory!"));
		psxMemShutdown();
		return -1;
	}

	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
	if (psxR == MAP_FAILED) {
		SysMessage(_("Error allocating memory!"));
		psxMemShutdown();
		return -1;
	}

	return 0;
}

static void psxMemFreeMap(void)
{
	if (psxM) psxUnmap(psxM, 0x00210000, MAP_TAG_RAM);
	if (psxH) psxUnmap(psxH, 0x10000, MAP_TAG_OTHER);
	if (psxR) psxUnmap(psxR, 0x80000, MAP_TAG_OTHER);
	psxM = psxH = psxR = NULL;
	psxP = NULL;
}

int psxMemInit(void)
{
	unsigned int i;
	int ret;

	if (LIGHTREC_CUSTOM_MAP)
		ret = lightrec_init_mmap();
	else
		ret = psxMemInitMap();
	if (ret) {
		SysMessage(_("Error allocating memory!"));
		psxMemShutdown();
		return -1;
	}

	if (DISABLE_MEM_LUTS)
		return 0;

	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, (int)(uintptr_t)INVALID_PTR, 0x10000 * sizeof(void *));
	memset(psxMemWLUT, (int)(uintptr_t)INVALID_PTR, 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() {
	if (LIGHTREC_CUSTOM_MAP)
		lightrec_free_mmap();
	else
		psxMemFreeMap();

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

int cache_isolated;

void psxMemOnIsolate(int enable)
{
	if (!DISABLE_MEM_LUTS) {
		if (enable) {
			memset(psxMemWLUT + 0x0000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
			memset(psxMemWLUT + 0x8000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
			//memset(psxMemWLUT + 0xa000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
		} else {
			int i;
			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 *));
		}
	}

	cache_isolated = enable;
	psxCpu->Notify(enable ? R3000ACPU_NOTIFY_CACHE_ISOLATED
			: R3000ACPU_NOTIFY_CACHE_UNISOLATED, 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 = psxm(mem, 0);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R1);
			return *(u8 *)p;
		} 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 = psxm(mem, 0);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R2);
			return SWAPu16(*(u16 *)p);
		} 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 = psxm(mem, 0);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, R4);
			return SWAPu32(*(u32 *)p);
		} else {
			if (mem == 0xfffe0130)
				return psxRegs.biuReg;
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err lw %8.8lx\n", mem);
#endif
			return 0xFFFFFFFF;
		}
	}
}

void psxMemWrite8(u32 mem, u32 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 = psxm(mem, 1);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W1);
			*(u8 *)p = 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, u32 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 = psxm(mem, 1);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W2);
			*(u16 *)p = 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 = psxm(mem, 1);
		if (p != INVALID_PTR) {
			if (Config.Debug)
				DebugCheckBP((mem & 0xffffff) | 0x80000000, W4);
			*(u32 *)p = SWAPu32(value);
#ifndef DRC_DISABLE
			psxCpu->Clear(mem, 1);
#endif
		} else {
			if (mem == 0xfffe0130) {
				psxRegs.biuReg = value;
				return;
			}
#ifdef PSXMEM_LOG
			PSXMEM_LOG("err sw %8.8lx\n", mem);
#endif
		}
	}
}

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 = psxm(mem, 1);
		if (p != INVALID_PTR) {
			return (void *)p;
		}
		return NULL;
	}
}
Commit	Line	Data
	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"
	27	#include "psxmem_map.h"
	28	#include "r3000a.h"
	29	#include "psxhw.h"
	30	//#include "debug.h"
	31	#define DebugCheckBP(...)
	32
	33	#include "lightrec/mem.h"
	34	#include "memmap.h"
	35
	36	#ifdef USE_LIBRETRO_VFS
	37	#include <streams/file_stream_transforms.h>
	38	#endif
	39
	40	#ifndef MAP_ANONYMOUS
	41	#define MAP_ANONYMOUS MAP_ANON
	42	#endif
	43
	44	static void * psxMapDefault(unsigned long addr, size_t size,
	45	int is_fixed, enum psxMapTag tag)
	46	{
	47	void *ptr;
	48	#if !P_HAVE_MMAP
	49	ptr = calloc(1, size);
	50	return ptr ? ptr : MAP_FAILED;
	51	#else
	52	int flags = MAP_PRIVATE \| MAP_ANONYMOUS;
	53
	54	ptr = mmap((void *)(uintptr_t)addr, size,
	55	PROT_READ \| PROT_WRITE, flags, -1, 0);
	56	#ifdef MADV_HUGEPAGE
	57	if (size >= 210241024) {
	58	if (ptr != MAP_FAILED && ((uintptr_t)ptr & (210241024 - 1))) {
	59	// try to manually realign assuming bottom-to-top alloc
	60	munmap(ptr, size);
	61	addr = (uintptr_t)ptr & ~(210241024 - 1);
	62	ptr = mmap((void *)(uintptr_t)addr, size,
	63	PROT_READ \| PROT_WRITE, flags, -1, 0);
	64	}
	65	if (ptr != MAP_FAILED)
	66	madvise(ptr, size, MADV_HUGEPAGE);
	67	}
	68	#endif
	69	return ptr;
	70	#endif
	71	}
	72
	73	static void psxUnmapDefault(void *ptr, size_t size, enum psxMapTag tag)
	74	{
	75	#if !P_HAVE_MMAP
	76	free(ptr);
	77	#else
	78	munmap(ptr, size);
	79	#endif
	80	}
	81
	82	void (psxMapHook)(unsigned long addr, size_t size, int is_fixed,
	83	enum psxMapTag tag) = psxMapDefault;
	84	void (psxUnmapHook)(void ptr, size_t size,
	85	enum psxMapTag tag) = psxUnmapDefault;
	86
	87	void *psxMap(unsigned long addr, size_t size, int is_fixed,
	88	enum psxMapTag tag)
	89	{
	90	int try_ = 0;
	91	unsigned long mask;
	92	void *ret;
	93
	94	retry:
	95	ret = psxMapHook(addr, size, 0, tag);
	96	if (ret == NULL)
	97	return MAP_FAILED;
	98
	99	if (addr != 0 && ret != (void *)(uintptr_t)addr) {
	100	SysMessage("psxMap: warning: wanted to map @%08x, got %p\n",
	101	addr, ret);
	102
	103	if (is_fixed) {
	104	psxUnmap(ret, size, tag);
	105	return MAP_FAILED;
	106	}
	107
	108	if (((addr ^ (unsigned long)(uintptr_t)ret) & ~0xff000000l) && try_ < 2)
	109	{
	110	psxUnmap(ret, size, tag);
	111
	112	// try to use similarly aligned memory instead
	113	// (recompiler needs this)
	114	mask = try_ ? 0xffff : 0xffffff;
	115	addr = ((uintptr_t)ret + mask) & ~mask;
	116	try_++;
	117	goto retry;
	118	}
	119	}
	120
	121	return ret;
	122	}
	123
	124	void psxUnmap(void *ptr, size_t size, enum psxMapTag tag)
	125	{
	126	psxUnmapHook(ptr, size, tag);
	127	}
	128
	129	s8 *psxM = NULL; // Kernel & User Memory (2 Meg)
	130	s8 *psxP = NULL; // Parallel Port (64K)
	131	s8 *psxR = NULL; // BIOS ROM (512K)
	132	s8 *psxH = NULL; // Scratch Pad (1K) & Hardware Registers (8K)
	133
	134	u8 **psxMemWLUT = NULL;
	135	u8 **psxMemRLUT = NULL;
	136
	137	/* Playstation Memory Map (from Playstation doc by Joshua Walker)
	138	0x0000_0000-0x0000_ffff Kernel (64K)
	139	0x0001_0000-0x001f_ffff User Memory (1.9 Meg)
	140
	141	0x1f00_0000-0x1f00_ffff Parallel Port (64K)
	142
	143	0x1f80_0000-0x1f80_03ff Scratch Pad (1024 bytes)
	144
	145	0x1f80_1000-0x1f80_2fff Hardware Registers (8K)
	146
	147	0x1fc0_0000-0x1fc7_ffff BIOS (512K)
	148
	149	0x8000_0000-0x801f_ffff Kernel and User Memory Mirror (2 Meg) Cached
	150	0x9fc0_0000-0x9fc7_ffff BIOS Mirror (512K) Cached
	151
	152	0xa000_0000-0xa01f_ffff Kernel and User Memory Mirror (2 Meg) Uncached
	153	0xbfc0_0000-0xbfc7_ffff BIOS Mirror (512K) Uncached
	154	*/
	155
	156	static int psxMemInitMap(void)
	157	{
	158	psxM = psxMap(0x80000000, 0x00210000, 1, MAP_TAG_RAM);
	159	if (psxM == MAP_FAILED)
	160	psxM = psxMap(0x77000000, 0x00210000, 0, MAP_TAG_RAM);
	161	if (psxM == MAP_FAILED) {
	162	SysMessage(_("mapping main RAM failed"));
	163	psxM = NULL;
	164	return -1;
	165	}
	166	psxP = &psxM[0x200000];
	167
	168	psxH = psxMap(0x1f800000, 0x10000, 0, MAP_TAG_OTHER);
	169	if (psxH == MAP_FAILED) {
	170	SysMessage(_("Error allocating memory!"));
	171	psxMemShutdown();
	172	return -1;
	173	}
	174
	175	psxR = psxMap(0x1fc00000, 0x80000, 0, MAP_TAG_OTHER);
	176	if (psxR == MAP_FAILED) {
	177	SysMessage(_("Error allocating memory!"));
	178	psxMemShutdown();
	179	return -1;
	180	}
	181
	182	return 0;
	183	}
	184
	185	static void psxMemFreeMap(void)
	186	{
	187	if (psxM) psxUnmap(psxM, 0x00210000, MAP_TAG_RAM);
	188	if (psxH) psxUnmap(psxH, 0x10000, MAP_TAG_OTHER);
	189	if (psxR) psxUnmap(psxR, 0x80000, MAP_TAG_OTHER);
	190	psxM = psxH = psxR = NULL;
	191	psxP = NULL;
	192	}
	193
	194	int psxMemInit(void)
	195	{
	196	unsigned int i;
	197	int ret;
	198
	199	if (LIGHTREC_CUSTOM_MAP)
	200	ret = lightrec_init_mmap();
	201	else
	202	ret = psxMemInitMap();
	203	if (ret) {
	204	SysMessage(_("Error allocating memory!"));
	205	psxMemShutdown();
	206	return -1;
	207	}
	208
	209	if (DISABLE_MEM_LUTS)
	210	return 0;
	211
	212	psxMemRLUT = (u8 *)malloc(0x10000 sizeof(void *));
	213	psxMemWLUT = (u8 *)malloc(0x10000 sizeof(void *));
	214
	215	if (psxMemRLUT == NULL \|\| psxMemWLUT == NULL) {
	216	SysMessage(_("Error allocating memory!"));
	217	psxMemShutdown();
	218	return -1;
	219	}
	220
	221	memset(psxMemRLUT, (int)(uintptr_t)INVALID_PTR, 0x10000 * sizeof(void *));
	222	memset(psxMemWLUT, (int)(uintptr_t)INVALID_PTR, 0x10000 * sizeof(void *));
	223
	224	// MemR
	225	for (i = 0; i < 0x80; i++) psxMemRLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	226
	227	memcpy(psxMemRLUT + 0x8000, psxMemRLUT, 0x80 * sizeof(void *));
	228	memcpy(psxMemRLUT + 0xa000, psxMemRLUT, 0x80 * sizeof(void *));
	229
	230	psxMemRLUT[0x1f00] = (u8 *)psxP;
	231	psxMemRLUT[0x1f80] = (u8 *)psxH;
	232
	233	for (i = 0; i < 0x08; i++) psxMemRLUT[i + 0x1fc0] = (u8 *)&psxR[i << 16];
	234
	235	memcpy(psxMemRLUT + 0x9fc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	236	memcpy(psxMemRLUT + 0xbfc0, psxMemRLUT + 0x1fc0, 0x08 * sizeof(void *));
	237
	238	// MemW
	239	for (i = 0; i < 0x80; i++) psxMemWLUT[i + 0x0000] = (u8 *)&psxM[(i & 0x1f) << 16];
	240
	241	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	242	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
	243
	244	// Don't allow writes to PIO Expansion region (psxP) to take effect.
	245	// NOTE: Not sure if this is needed to fix any games but seems wise,
	246	// seeing as some games do read from PIO as part of copy-protection
	247	// check. (See fix in psxMemReset() regarding psxP region reads).
	248	psxMemWLUT[0x1f00] = INVALID_PTR;
	249	psxMemWLUT[0x1f80] = (u8 *)psxH;
	250
	251	return 0;
	252	}
	253
	254	void psxMemReset() {
	255	FILE *f = NULL;
	256	char bios[1024];
	257
	258	memset(psxM, 0, 0x00200000);
	259	memset(psxP, 0xff, 0x00010000);
	260
	261	Config.HLE = TRUE;
	262
	263	if (strcmp(Config.Bios, "HLE") != 0) {
	264	sprintf(bios, "%s/%s", Config.BiosDir, Config.Bios);
	265	f = fopen(bios, "rb");
	266
	267	if (f == NULL) {
	268	SysMessage(_("Could not open BIOS:\"%s\". Enabling HLE Bios!\n"), bios);
	269	memset(psxR, 0, 0x80000);
	270	} else {
	271	if (fread(psxR, 1, 0x80000, f) == 0x80000) {
	272	Config.HLE = FALSE;
	273	} else {
	274	SysMessage(_("The selected BIOS:\"%s\" is of wrong size. Enabling HLE Bios!\n"), bios);
	275	}
	276	fclose(f);
	277	}
	278	}
	279	}
	280
	281	void psxMemShutdown() {
	282	if (LIGHTREC_CUSTOM_MAP)
	283	lightrec_free_mmap();
	284	else
	285	psxMemFreeMap();
	286
	287	free(psxMemRLUT); psxMemRLUT = NULL;
	288	free(psxMemWLUT); psxMemWLUT = NULL;
	289	}
	290
	291	int cache_isolated;
	292
	293	void psxMemOnIsolate(int enable)
	294	{
	295	if (!DISABLE_MEM_LUTS) {
	296	if (enable) {
	297	memset(psxMemWLUT + 0x0000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
	298	memset(psxMemWLUT + 0x8000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
	299	//memset(psxMemWLUT + 0xa000, (int)(uintptr_t)INVALID_PTR, 0x80 * sizeof(void *));
	300	} else {
	301	int i;
	302	for (i = 0; i < 0x80; i++)
	303	psxMemWLUT[i + 0x0000] = (void *)&psxM[(i & 0x1f) << 16];
	304	memcpy(psxMemWLUT + 0x8000, psxMemWLUT, 0x80 * sizeof(void *));
	305	memcpy(psxMemWLUT + 0xa000, psxMemWLUT, 0x80 * sizeof(void *));
	306	}
	307	}
	308
	309	cache_isolated = enable;
	310	psxCpu->Notify(enable ? R3000ACPU_NOTIFY_CACHE_ISOLATED
	311	: R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
	312	}
	313
	314	u8 psxMemRead8(u32 mem) {
	315	char *p;
	316	u32 t;
	317
	318	t = mem >> 16;
	319	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	320	if ((mem & 0xffff) < 0x400)
	321	return psxHu8(mem);
	322	else
	323	return psxHwRead8(mem);
	324	} else {
	325	p = psxm(mem, 0);
	326	if (p != INVALID_PTR) {
	327	if (Config.Debug)
	328	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R1);
	329	return (u8 )p;
	330	} else {
	331	#ifdef PSXMEM_LOG
	332	PSXMEM_LOG("err lb %8.8lx\n", mem);
	333	#endif
	334	return 0xFF;
	335	}
	336	}
	337	}
	338
	339	u16 psxMemRead16(u32 mem) {
	340	char *p;
	341	u32 t;
	342
	343	t = mem >> 16;
	344	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	345	if ((mem & 0xffff) < 0x400)
	346	return psxHu16(mem);
	347	else
	348	return psxHwRead16(mem);
	349	} else {
	350	p = psxm(mem, 0);
	351	if (p != INVALID_PTR) {
	352	if (Config.Debug)
	353	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R2);
	354	return SWAPu16((u16 )p);
	355	} else {
	356	#ifdef PSXMEM_LOG
	357	PSXMEM_LOG("err lh %8.8lx\n", mem);
	358	#endif
	359	return 0xFFFF;
	360	}
	361	}
	362	}
	363
	364	u32 psxMemRead32(u32 mem) {
	365	char *p;
	366	u32 t;
	367
	368	t = mem >> 16;
	369	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	370	if ((mem & 0xffff) < 0x400)
	371	return psxHu32(mem);
	372	else
	373	return psxHwRead32(mem);
	374	} else {
	375	p = psxm(mem, 0);
	376	if (p != INVALID_PTR) {
	377	if (Config.Debug)
	378	DebugCheckBP((mem & 0xffffff) \| 0x80000000, R4);
	379	return SWAPu32((u32 )p);
	380	} else {
	381	if (mem == 0xfffe0130)
	382	return psxRegs.biuReg;
	383	#ifdef PSXMEM_LOG
	384	PSXMEM_LOG("err lw %8.8lx\n", mem);
	385	#endif
	386	return 0xFFFFFFFF;
	387	}
	388	}
	389	}
	390
	391	void psxMemWrite8(u32 mem, u32 value) {
	392	char *p;
	393	u32 t;
	394
	395	t = mem >> 16;
	396	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	397	if ((mem & 0xffff) < 0x400)
	398	psxHu8(mem) = value;
	399	else
	400	psxHwWrite8(mem, value);
	401	} else {
	402	p = psxm(mem, 1);
	403	if (p != INVALID_PTR) {
	404	if (Config.Debug)
	405	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W1);
	406	(u8 )p = value;
	407	#ifndef DRC_DISABLE
	408	psxCpu->Clear((mem & (~3)), 1);
	409	#endif
	410	} else {
	411	#ifdef PSXMEM_LOG
	412	PSXMEM_LOG("err sb %8.8lx\n", mem);
	413	#endif
	414	}
	415	}
	416	}
	417
	418	void psxMemWrite16(u32 mem, u32 value) {
	419	char *p;
	420	u32 t;
	421
	422	t = mem >> 16;
	423	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	424	if ((mem & 0xffff) < 0x400)
	425	psxHu16ref(mem) = SWAPu16(value);
	426	else
	427	psxHwWrite16(mem, value);
	428	} else {
	429	p = psxm(mem, 1);
	430	if (p != INVALID_PTR) {
	431	if (Config.Debug)
	432	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W2);
	433	(u16 )p = SWAPu16(value);
	434	#ifndef DRC_DISABLE
	435	psxCpu->Clear((mem & (~3)), 1);
	436	#endif
	437	} else {
	438	#ifdef PSXMEM_LOG
	439	PSXMEM_LOG("err sh %8.8lx\n", mem);
	440	#endif
	441	}
	442	}
	443	}
	444
	445	void psxMemWrite32(u32 mem, u32 value) {
	446	char *p;
	447	u32 t;
	448
	449	// if ((mem&0x1fffff) == 0x71E18 \|\| value == 0x48088800) SysPrintf("t2fix!!\n");
	450	t = mem >> 16;
	451	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	452	if ((mem & 0xffff) < 0x400)
	453	psxHu32ref(mem) = SWAPu32(value);
	454	else
	455	psxHwWrite32(mem, value);
	456	} else {
	457	p = psxm(mem, 1);
	458	if (p != INVALID_PTR) {
	459	if (Config.Debug)
	460	DebugCheckBP((mem & 0xffffff) \| 0x80000000, W4);
	461	(u32 )p = SWAPu32(value);
	462	#ifndef DRC_DISABLE
	463	psxCpu->Clear(mem, 1);
	464	#endif
	465	} else {
	466	if (mem == 0xfffe0130) {
	467	psxRegs.biuReg = value;
	468	return;
	469	}
	470	#ifdef PSXMEM_LOG
	471	PSXMEM_LOG("err sw %8.8lx\n", mem);
	472	#endif
	473	}
	474	}
	475	}
	476
	477	void *psxMemPointer(u32 mem) {
	478	char *p;
	479	u32 t;
	480
	481	t = mem >> 16;
	482	if (t == 0x1f80 \|\| t == 0x9f80 \|\| t == 0xbf80) {
	483	if ((mem & 0xffff) < 0x400)
	484	return (void *)&psxH[mem];
	485	else
	486	return NULL;
	487	} else {
	488	p = psxm(mem, 1);
	489	if (p != INVALID_PTR) {
	490	return (void *)p;
	491	}
	492	return NULL;
	493	}
	494	}