| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - interpreter_tlb.def * |
| 3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
| 4 | * Copyright (C) 2002 Hacktarux * |
| 5 | * * |
| 6 | * This program is free software; you can redistribute it and/or modify * |
| 7 | * it under the terms of the GNU General Public License as published by * |
| 8 | * the Free Software Foundation; either version 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 11 | * This program is distributed in the hope that it will be useful, * |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 14 | * GNU General Public License for more details. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the * |
| 18 | * Free Software Foundation, Inc., * |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 20 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 21 | |
| 22 | #include <zlib.h> // For adler32() |
| 23 | |
| 24 | DECLARE_INSTRUCTION(TLBR) |
| 25 | { |
| 26 | int index; |
| 27 | index = Index & 0x1F; |
| 28 | PageMask = tlb_e[index].mask << 13; |
| 29 | EntryHi = ((tlb_e[index].vpn2 << 13) | tlb_e[index].asid); |
| 30 | EntryLo0 = (tlb_e[index].pfn_even << 6) | (tlb_e[index].c_even << 3) |
| 31 | | (tlb_e[index].d_even << 2) | (tlb_e[index].v_even << 1) |
| 32 | | tlb_e[index].g; |
| 33 | EntryLo1 = (tlb_e[index].pfn_odd << 6) | (tlb_e[index].c_odd << 3) |
| 34 | | (tlb_e[index].d_odd << 2) | (tlb_e[index].v_odd << 1) |
| 35 | | tlb_e[index].g; |
| 36 | ADD_TO_PC(1); |
| 37 | } |
| 38 | |
| 39 | static void TLBWrite(unsigned int idx) |
| 40 | { |
| 41 | if (r4300emu != CORE_PURE_INTERPRETER) |
| 42 | { |
| 43 | unsigned int i; |
| 44 | if (tlb_e[idx].v_even) |
| 45 | { |
| 46 | for (i=tlb_e[idx].start_even>>12; i<=tlb_e[idx].end_even>>12; i++) |
| 47 | { |
| 48 | if(!invalid_code[i] &&(invalid_code[tlb_LUT_r[i]>>12] || |
| 49 | invalid_code[(tlb_LUT_r[i]>>12)+0x20000])) |
| 50 | invalid_code[i] = 1; |
| 51 | if (!invalid_code[i]) |
| 52 | { |
| 53 | /*int j; |
| 54 | md5_state_t state; |
| 55 | md5_byte_t digest[16]; |
| 56 | md5_init(&state); |
| 57 | md5_append(&state, |
| 58 | (const md5_byte_t*)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], |
| 59 | 0x1000); |
| 60 | md5_finish(&state, digest); |
| 61 | for (j=0; j<16; j++) blocks[i]->md5[j] = digest[j];*/ |
| 62 | |
| 63 | blocks[i]->adler32 = adler32(0, (const unsigned char *)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], 0x1000); |
| 64 | |
| 65 | invalid_code[i] = 1; |
| 66 | } |
| 67 | else if (blocks[i]) |
| 68 | { |
| 69 | /*int j; |
| 70 | for (j=0; j<16; j++) blocks[i]->md5[j] = 0;*/ |
| 71 | blocks[i]->adler32 = 0; |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | if (tlb_e[idx].v_odd) |
| 76 | { |
| 77 | for (i=tlb_e[idx].start_odd>>12; i<=tlb_e[idx].end_odd>>12; i++) |
| 78 | { |
| 79 | if(!invalid_code[i] &&(invalid_code[tlb_LUT_r[i]>>12] || |
| 80 | invalid_code[(tlb_LUT_r[i]>>12)+0x20000])) |
| 81 | invalid_code[i] = 1; |
| 82 | if (!invalid_code[i]) |
| 83 | { |
| 84 | /*int j; |
| 85 | md5_state_t state; |
| 86 | md5_byte_t digest[16]; |
| 87 | md5_init(&state); |
| 88 | md5_append(&state, |
| 89 | (const md5_byte_t*)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], |
| 90 | 0x1000); |
| 91 | md5_finish(&state, digest); |
| 92 | for (j=0; j<16; j++) blocks[i]->md5[j] = digest[j];*/ |
| 93 | |
| 94 | blocks[i]->adler32 = adler32(0, (const unsigned char *)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], 0x1000); |
| 95 | |
| 96 | invalid_code[i] = 1; |
| 97 | } |
| 98 | else if (blocks[i]) |
| 99 | { |
| 100 | /*int j; |
| 101 | for (j=0; j<16; j++) blocks[i]->md5[j] = 0;*/ |
| 102 | blocks[i]->adler32 = 0; |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | tlb_unmap(&tlb_e[idx]); |
| 109 | |
| 110 | tlb_e[idx].g = (EntryLo0 & EntryLo1 & 1); |
| 111 | tlb_e[idx].pfn_even = (EntryLo0 & 0x3FFFFFC0) >> 6; |
| 112 | tlb_e[idx].pfn_odd = (EntryLo1 & 0x3FFFFFC0) >> 6; |
| 113 | tlb_e[idx].c_even = (EntryLo0 & 0x38) >> 3; |
| 114 | tlb_e[idx].c_odd = (EntryLo1 & 0x38) >> 3; |
| 115 | tlb_e[idx].d_even = (EntryLo0 & 0x4) >> 2; |
| 116 | tlb_e[idx].d_odd = (EntryLo1 & 0x4) >> 2; |
| 117 | tlb_e[idx].v_even = (EntryLo0 & 0x2) >> 1; |
| 118 | tlb_e[idx].v_odd = (EntryLo1 & 0x2) >> 1; |
| 119 | tlb_e[idx].asid = (EntryHi & 0xFF); |
| 120 | tlb_e[idx].vpn2 = (EntryHi & 0xFFFFE000) >> 13; |
| 121 | //tlb_e[idx].r = (EntryHi & 0xC000000000000000LL) >> 62; |
| 122 | tlb_e[idx].mask = (PageMask & 0x1FFE000) >> 13; |
| 123 | |
| 124 | tlb_e[idx].start_even = tlb_e[idx].vpn2 << 13; |
| 125 | tlb_e[idx].end_even = tlb_e[idx].start_even+ |
| 126 | (tlb_e[idx].mask << 12) + 0xFFF; |
| 127 | tlb_e[idx].phys_even = tlb_e[idx].pfn_even << 12; |
| 128 | |
| 129 | |
| 130 | tlb_e[idx].start_odd = tlb_e[idx].end_even+1; |
| 131 | tlb_e[idx].end_odd = tlb_e[idx].start_odd+ |
| 132 | (tlb_e[idx].mask << 12) + 0xFFF; |
| 133 | tlb_e[idx].phys_odd = tlb_e[idx].pfn_odd << 12; |
| 134 | |
| 135 | tlb_map(&tlb_e[idx]); |
| 136 | |
| 137 | if (r4300emu != CORE_PURE_INTERPRETER) |
| 138 | { |
| 139 | unsigned int i; |
| 140 | if (tlb_e[idx].v_even) |
| 141 | { |
| 142 | for (i=tlb_e[idx].start_even>>12; i<=tlb_e[idx].end_even>>12; i++) |
| 143 | { |
| 144 | /*if (blocks[i] && (blocks[i]->md5[0] || blocks[i]->md5[1] || |
| 145 | blocks[i]->md5[2] || blocks[i]->md5[3])) |
| 146 | { |
| 147 | int j; |
| 148 | int equal = 1; |
| 149 | md5_state_t state; |
| 150 | md5_byte_t digest[16]; |
| 151 | md5_init(&state); |
| 152 | md5_append(&state, |
| 153 | (const md5_byte_t*)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], |
| 154 | 0x1000); |
| 155 | md5_finish(&state, digest); |
| 156 | for (j=0; j<16; j++) |
| 157 | if (digest[j] != blocks[i]->md5[j]) |
| 158 | equal = 0; |
| 159 | if (equal) invalid_code[i] = 0; |
| 160 | }*/ |
| 161 | if(blocks[i] && blocks[i]->adler32) |
| 162 | { |
| 163 | if(blocks[i]->adler32 == adler32(0,(const unsigned char *)&rdram[(tlb_LUT_r[i]&0x7FF000)/4],0x1000)) |
| 164 | invalid_code[i] = 0; |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | if (tlb_e[idx].v_odd) |
| 170 | { |
| 171 | for (i=tlb_e[idx].start_odd>>12; i<=tlb_e[idx].end_odd>>12; i++) |
| 172 | { |
| 173 | /*if (blocks[i] && (blocks[i]->md5[0] || blocks[i]->md5[1] || |
| 174 | blocks[i]->md5[2] || blocks[i]->md5[3])) |
| 175 | { |
| 176 | int j; |
| 177 | int equal = 1; |
| 178 | md5_state_t state; |
| 179 | md5_byte_t digest[16]; |
| 180 | md5_init(&state); |
| 181 | md5_append(&state, |
| 182 | (const md5_byte_t*)&rdram[(tlb_LUT_r[i]&0x7FF000)/4], |
| 183 | 0x1000); |
| 184 | md5_finish(&state, digest); |
| 185 | for (j=0; j<16; j++) |
| 186 | if (digest[j] != blocks[i]->md5[j]) |
| 187 | equal = 0; |
| 188 | if (equal) invalid_code[i] = 0; |
| 189 | }*/ |
| 190 | if(blocks[i] && blocks[i]->adler32) |
| 191 | { |
| 192 | if(blocks[i]->adler32 == adler32(0,(const unsigned char *)&rdram[(tlb_LUT_r[i]&0x7FF000)/4],0x1000)) |
| 193 | invalid_code[i] = 0; |
| 194 | } |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | DECLARE_INSTRUCTION(TLBWI) |
| 201 | { |
| 202 | TLBWrite(Index&0x3F); |
| 203 | ADD_TO_PC(1); |
| 204 | } |
| 205 | |
| 206 | DECLARE_INSTRUCTION(TLBWR) |
| 207 | { |
| 208 | update_count(); |
| 209 | Random = (Count/2 % (32 - Wired)) + Wired; |
| 210 | TLBWrite(Random); |
| 211 | ADD_TO_PC(1); |
| 212 | } |
| 213 | |
| 214 | DECLARE_INSTRUCTION(TLBP) |
| 215 | { |
| 216 | int i; |
| 217 | Index |= 0x80000000; |
| 218 | for (i=0; i<32; i++) |
| 219 | { |
| 220 | if (((tlb_e[i].vpn2 & (~tlb_e[i].mask)) == |
| 221 | (((EntryHi & 0xFFFFE000) >> 13) & (~tlb_e[i].mask))) && |
| 222 | ((tlb_e[i].g) || |
| 223 | (tlb_e[i].asid == (EntryHi & 0xFF)))) |
| 224 | { |
| 225 | Index = i; |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | ADD_TO_PC(1); |
| 230 | } |
| 231 | |
| 232 | DECLARE_INSTRUCTION(ERET) |
| 233 | { |
| 234 | update_count(); |
| 235 | if (Status & 0x4) |
| 236 | { |
| 237 | DebugMessage(M64MSG_ERROR, "error in ERET"); |
| 238 | stop=1; |
| 239 | } |
| 240 | else |
| 241 | { |
| 242 | Status &= ~0x2; |
| 243 | generic_jump_to(EPC); |
| 244 | } |
| 245 | llbit = 0; |
| 246 | check_interupt(); |
| 247 | last_addr = PCADDR; |
| 248 | if (next_interupt <= Count) gen_interupt(); |
| 249 | } |