X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=source%2Fmupen64plus-core%2Fsrc%2Fmemory%2Ftlb.c;fp=source%2Fmupen64plus-core%2Fsrc%2Fmemory%2Ftlb.c;h=c5eaf823542a054bbc2bf2087e5de2b5081cb082;hb=451ab91e3827a6384981b3300e2a7000d2eaba58;hp=0000000000000000000000000000000000000000;hpb=a2ab25365b5b0dddbee476d695d8a31151407581;p=mupen64plus-pandora.git diff --git a/source/mupen64plus-core/src/memory/tlb.c b/source/mupen64plus-core/src/memory/tlb.c new file mode 100644 index 0000000..c5eaf82 --- /dev/null +++ b/source/mupen64plus-core/src/memory/tlb.c @@ -0,0 +1,135 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Mupen64plus - tlb.c * + * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * + * Copyright (C) 2002 Hacktarux * + * * + * 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 02110-1301, USA. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +#include + +#include "api/m64p_types.h" + +#include "memory.h" + +#include "r4300/r4300.h" +#include "r4300/exception.h" +#include "r4300/macros.h" +#include "main/rom.h" + +unsigned int tlb_LUT_r[0x100000]; +unsigned int tlb_LUT_w[0x100000]; + +void tlb_unmap(tlb *entry) +{ + unsigned int i; + + if (entry->v_even) + { + for (i=entry->start_even; iend_even; i += 0x1000) + tlb_LUT_r[i>>12] = 0; + if (entry->d_even) + for (i=entry->start_even; iend_even; i += 0x1000) + tlb_LUT_w[i>>12] = 0; + } + + if (entry->v_odd) + { + for (i=entry->start_odd; iend_odd; i += 0x1000) + tlb_LUT_r[i>>12] = 0; + if (entry->d_odd) + for (i=entry->start_odd; iend_odd; i += 0x1000) + tlb_LUT_w[i>>12] = 0; + } +} + +void tlb_map(tlb *entry) +{ + unsigned int i; + + if (entry->v_even) + { + if (entry->start_even < entry->end_even && + !(entry->start_even >= 0x80000000 && entry->end_even < 0xC0000000) && + entry->phys_even < 0x20000000) + { + for (i=entry->start_even;iend_even;i+=0x1000) + tlb_LUT_r[i>>12] = 0x80000000 | (entry->phys_even + (i - entry->start_even) + 0xFFF); + if (entry->d_even) + for (i=entry->start_even;iend_even;i+=0x1000) + tlb_LUT_w[i>>12] = 0x80000000 | (entry->phys_even + (i - entry->start_even) + 0xFFF); + } + } + + if (entry->v_odd) + { + if (entry->start_odd < entry->end_odd && + !(entry->start_odd >= 0x80000000 && entry->end_odd < 0xC0000000) && + entry->phys_odd < 0x20000000) + { + for (i=entry->start_odd;iend_odd;i+=0x1000) + tlb_LUT_r[i>>12] = 0x80000000 | (entry->phys_odd + (i - entry->start_odd) + 0xFFF); + if (entry->d_odd) + for (i=entry->start_odd;iend_odd;i+=0x1000) + tlb_LUT_w[i>>12] = 0x80000000 | (entry->phys_odd + (i - entry->start_odd) + 0xFFF); + } + } +} + +unsigned int virtual_to_physical_address(unsigned int addresse, int w) +{ + if (addresse >= 0x7f000000 && addresse < 0x80000000 && isGoldeneyeRom) + { + /************************************************** + GoldenEye 007 hack allows for use of TLB. + Recoded by okaygo to support all US, J, and E ROMS. + **************************************************/ + switch (ROM_HEADER.Country_code & 0xFF) + { + case 0x45: + // U + return 0xb0034b30 + (addresse & 0xFFFFFF); + break; + case 0x4A: + // J + return 0xb0034b70 + (addresse & 0xFFFFFF); + break; + case 0x50: + // E + return 0xb00329f0 + (addresse & 0xFFFFFF); + break; + default: + // UNKNOWN COUNTRY CODE FOR GOLDENEYE USING AMERICAN VERSION HACK + return 0xb0034b30 + (addresse & 0xFFFFFF); + break; + } + } + if (w == 1) + { + if (tlb_LUT_w[addresse>>12]) + return (tlb_LUT_w[addresse>>12]&0xFFFFF000)|(addresse&0xFFF); + } + else + { + if (tlb_LUT_r[addresse>>12]) + return (tlb_LUT_r[addresse>>12]&0xFFFFF000)|(addresse&0xFFF); + } + //printf("tlb exception !!! @ %x, %x, add:%x\n", addresse, w, PC->addr); + //getchar(); + TLB_refill_exception(addresse,w); + //return 0x80000000; + return 0x00000000; +}