| 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 | #ifndef __PSXMEMORY_H__ |
| 21 | #define __PSXMEMORY_H__ |
| 22 | |
| 23 | #ifdef __cplusplus |
| 24 | extern "C" { |
| 25 | #endif |
| 26 | |
| 27 | #include "psxcommon.h" |
| 28 | |
| 29 | #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
| 30 | |
| 31 | #define SWAP16(v) __builtin_bswap16(v) |
| 32 | #define SWAP32(v) __builtin_bswap32(v) |
| 33 | #define SWAPu32(v) SWAP32((u32)(v)) |
| 34 | #define SWAPs32(v) SWAP32((s32)(v)) |
| 35 | |
| 36 | #define SWAPu16(v) SWAP16((u16)(v)) |
| 37 | #define SWAPs16(v) SWAP16((s16)(v)) |
| 38 | |
| 39 | #else |
| 40 | |
| 41 | #define SWAP16(b) (b) |
| 42 | #define SWAP32(b) (b) |
| 43 | |
| 44 | #define SWAPu16(b) (b) |
| 45 | #define SWAPu32(b) (b) |
| 46 | |
| 47 | #endif |
| 48 | |
| 49 | #ifdef LIGHTREC |
| 50 | #define INVALID_PTR ((void *)-1) |
| 51 | #else |
| 52 | #define INVALID_PTR NULL |
| 53 | #endif |
| 54 | |
| 55 | extern s8 *psxM; |
| 56 | #define psxMs8(mem) psxM[(mem) & 0x1fffff] |
| 57 | #define psxMs16(mem) (SWAP16(*(s16 *)&psxM[(mem) & 0x1fffff])) |
| 58 | #define psxMs32(mem) (SWAP32(*(s32 *)&psxM[(mem) & 0x1fffff])) |
| 59 | #define psxMu8(mem) (*(u8 *)&psxM[(mem) & 0x1fffff]) |
| 60 | #define psxMu16(mem) (SWAP16(*(u16 *)&psxM[(mem) & 0x1fffff])) |
| 61 | #define psxMu32(mem) (SWAP32(*(u32 *)&psxM[(mem) & 0x1fffff])) |
| 62 | |
| 63 | #define psxMs8ref(mem) psxM[(mem) & 0x1fffff] |
| 64 | #define psxMs16ref(mem) (*(s16 *)&psxM[(mem) & 0x1fffff]) |
| 65 | #define psxMs32ref(mem) (*(s32 *)&psxM[(mem) & 0x1fffff]) |
| 66 | #define psxMu8ref(mem) (*(u8 *)&psxM[(mem) & 0x1fffff]) |
| 67 | #define psxMu16ref(mem) (*(u16 *)&psxM[(mem) & 0x1fffff]) |
| 68 | #define psxMu32ref(mem) (*(u32 *)&psxM[(mem) & 0x1fffff]) |
| 69 | |
| 70 | extern s8 *psxP; |
| 71 | #define psxPs8(mem) psxP[(mem) & 0xffff] |
| 72 | #define psxPs16(mem) (SWAP16(*(s16 *)&psxP[(mem) & 0xffff])) |
| 73 | #define psxPs32(mem) (SWAP32(*(s32 *)&psxP[(mem) & 0xffff])) |
| 74 | #define psxPu8(mem) (*(u8 *)&psxP[(mem) & 0xffff]) |
| 75 | #define psxPu16(mem) (SWAP16(*(u16 *)&psxP[(mem) & 0xffff])) |
| 76 | #define psxPu32(mem) (SWAP32(*(u32 *)&psxP[(mem) & 0xffff])) |
| 77 | |
| 78 | #define psxPs8ref(mem) psxP[(mem) & 0xffff] |
| 79 | #define psxPs16ref(mem) (*(s16 *)&psxP[(mem) & 0xffff]) |
| 80 | #define psxPs32ref(mem) (*(s32 *)&psxP[(mem) & 0xffff]) |
| 81 | #define psxPu8ref(mem) (*(u8 *)&psxP[(mem) & 0xffff]) |
| 82 | #define psxPu16ref(mem) (*(u16 *)&psxP[(mem) & 0xffff]) |
| 83 | #define psxPu32ref(mem) (*(u32 *)&psxP[(mem) & 0xffff]) |
| 84 | |
| 85 | extern s8 *psxR; |
| 86 | #define psxRs8(mem) psxR[(mem) & 0x7ffff] |
| 87 | #define psxRs16(mem) (SWAP16(*(s16 *)&psxR[(mem) & 0x7ffff])) |
| 88 | #define psxRs32(mem) (SWAP32(*(s32 *)&psxR[(mem) & 0x7ffff])) |
| 89 | #define psxRu8(mem) (*(u8* )&psxR[(mem) & 0x7ffff]) |
| 90 | #define psxRu16(mem) (SWAP16(*(u16 *)&psxR[(mem) & 0x7ffff])) |
| 91 | #define psxRu32(mem) (SWAP32(*(u32 *)&psxR[(mem) & 0x7ffff])) |
| 92 | |
| 93 | #define psxRs8ref(mem) psxR[(mem) & 0x7ffff] |
| 94 | #define psxRs16ref(mem) (*(s16*)&psxR[(mem) & 0x7ffff]) |
| 95 | #define psxRs32ref(mem) (*(s32*)&psxR[(mem) & 0x7ffff]) |
| 96 | #define psxRu8ref(mem) (*(u8 *)&psxR[(mem) & 0x7ffff]) |
| 97 | #define psxRu16ref(mem) (*(u16*)&psxR[(mem) & 0x7ffff]) |
| 98 | #define psxRu32ref(mem) (*(u32*)&psxR[(mem) & 0x7ffff]) |
| 99 | |
| 100 | extern s8 *psxH; |
| 101 | #define psxHs8(mem) psxH[(mem) & 0xffff] |
| 102 | #define psxHs16(mem) (SWAP16(*(s16 *)&psxH[(mem) & 0xffff])) |
| 103 | #define psxHs32(mem) (SWAP32(*(s32 *)&psxH[(mem) & 0xffff])) |
| 104 | #define psxHu8(mem) (*(u8 *)&psxH[(mem) & 0xffff]) |
| 105 | #define psxHu16(mem) (SWAP16(*(u16 *)&psxH[(mem) & 0xffff])) |
| 106 | #define psxHu32(mem) (SWAP32(*(u32 *)&psxH[(mem) & 0xffff])) |
| 107 | |
| 108 | #define psxHs8ref(mem) psxH[(mem) & 0xffff] |
| 109 | #define psxHs16ref(mem) (*(s16 *)&psxH[(mem) & 0xffff]) |
| 110 | #define psxHs32ref(mem) (*(s32 *)&psxH[(mem) & 0xffff]) |
| 111 | #define psxHu8ref(mem) (*(u8 *)&psxH[(mem) & 0xffff]) |
| 112 | #define psxHu16ref(mem) (*(u16 *)&psxH[(mem) & 0xffff]) |
| 113 | #define psxHu32ref(mem) (*(u32 *)&psxH[(mem) & 0xffff]) |
| 114 | |
| 115 | extern u8 **psxMemWLUT; |
| 116 | extern u8 **psxMemRLUT; |
| 117 | extern int cache_isolated; |
| 118 | |
| 119 | #ifndef DISABLE_MEM_LUTS |
| 120 | #define DISABLE_MEM_LUTS 0 |
| 121 | #endif |
| 122 | |
| 123 | static inline void * psxm_lut(u32 mem, int write, u8 **lut) |
| 124 | { |
| 125 | if (!DISABLE_MEM_LUTS) { |
| 126 | void *ptr = lut[mem >> 16]; |
| 127 | |
| 128 | return ptr == INVALID_PTR ? INVALID_PTR |
| 129 | : (void *)((uintptr_t)ptr + (u16)mem); |
| 130 | } |
| 131 | |
| 132 | if (mem >= 0xa0000000) |
| 133 | mem -= 0xa0000000; |
| 134 | else |
| 135 | mem &= ~0x80000000; |
| 136 | |
| 137 | if (mem < 0x800000) { |
| 138 | if (cache_isolated) |
| 139 | return INVALID_PTR; |
| 140 | |
| 141 | return &psxM[mem & 0x1fffff]; |
| 142 | } |
| 143 | |
| 144 | if (mem > 0x1f800000 && mem <= 0x1f810000) |
| 145 | return &psxH[mem - 0x1f800000]; |
| 146 | |
| 147 | if (!write) { |
| 148 | if (mem > 0x1fc00000 && mem <= 0x1fc80000) |
| 149 | return &psxR[mem - 0x1fc00000]; |
| 150 | |
| 151 | if (mem > 0x1f000000 && mem <= 0x1f010000) |
| 152 | return &psxP[mem - 0x1f000000]; |
| 153 | } |
| 154 | |
| 155 | return INVALID_PTR; |
| 156 | } |
| 157 | |
| 158 | static inline void * psxm(u32 mem, int write) |
| 159 | { |
| 160 | return psxm_lut(mem, write, write ? psxMemWLUT : psxMemRLUT); |
| 161 | } |
| 162 | |
| 163 | #define PSXM(mem) psxm(mem, 0) |
| 164 | #define PSXMs8(mem) (*(s8 *)PSXM(mem)) |
| 165 | #define PSXMs16(mem) (SWAP16(*(s16 *)PSXM(mem))) |
| 166 | #define PSXMs32(mem) (SWAP32(*(s32 *)PSXM(mem))) |
| 167 | #define PSXMu8(mem) (*(u8 *)PSXM(mem)) |
| 168 | #define PSXMu16(mem) (SWAP16(*(u16 *)PSXM(mem))) |
| 169 | #define PSXMu32(mem) (SWAP32(*(u32 *)PSXM(mem))) |
| 170 | |
| 171 | #define PSXMu32ref(mem) (*(u32 *)PSXM(mem)) |
| 172 | |
| 173 | int psxMemInit(); |
| 174 | void psxMemReset(); |
| 175 | void psxMemOnIsolate(int enable); |
| 176 | void psxMemShutdown(); |
| 177 | |
| 178 | u8 psxMemRead8 (u32 mem); |
| 179 | u16 psxMemRead16(u32 mem); |
| 180 | u32 psxMemRead32(u32 mem); |
| 181 | void psxMemWrite8 (u32 mem, u32 value); |
| 182 | void psxMemWrite16(u32 mem, u32 value); |
| 183 | void psxMemWrite32(u32 mem, u32 value); |
| 184 | void *psxMemPointer(u32 mem); |
| 185 | |
| 186 | #ifdef __cplusplus |
| 187 | } |
| 188 | #endif |
| 189 | #endif |