X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=source%2Fmupen64plus-core%2Ftools%2Fsavestate_convert.c;fp=source%2Fmupen64plus-core%2Ftools%2Fsavestate_convert.c;h=f639d31a682d6e605f1c23f2fe821df101dfc488;hb=451ab91e3827a6384981b3300e2a7000d2eaba58;hp=0000000000000000000000000000000000000000;hpb=a2ab25365b5b0dddbee476d695d8a31151407581;p=mupen64plus-pandora.git diff --git a/source/mupen64plus-core/tools/savestate_convert.c b/source/mupen64plus-core/tools/savestate_convert.c new file mode 100644 index 0000000..f639d31 --- /dev/null +++ b/source/mupen64plus-core/tools/savestate_convert.c @@ -0,0 +1,396 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Mupen64plus - savestate_convert.c * + * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * + * Copyright (C) 2008 Richard Goedeken * + * * + * 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 +#include +#include + +/* savestate file header: magic number and version number */ +const char *savestate_magic = "M64+SAVE"; +const int savestate_newest_version = 0x00010000; // 1.0 + +/* Data field lengths */ + +#define SIZE_REG_RDRAM 40 +#define SIZE_REG_MIPS 36 +#define SIZE_REG_PI 52 +#define SIZE_REG_SP 52 +#define SIZE_REG_RSP 8 +#define SIZE_REG_SI 16 +#define SIZE_REG_VI 60 +#define SIZE_REG_RI 32 +#define SIZE_REG_AI 40 +#define SIZE_REG_DPC 48 +#define SIZE_REG_DPS 16 + +#define SIZE_FLASHRAM_INFO 24 +#define SIZE_TLB_ENTRY 52 + +#define SIZE_MAX_EVENTQUEUE 1024 + +/* Arrays and pointers for savestate data */ + +char rom_md5[32]; + +char rdram_register[SIZE_REG_RDRAM]; +char mips_register[SIZE_REG_MIPS]; +char pi_register[SIZE_REG_PI]; +char sp_register[SIZE_REG_SP]; +char rsp_register[SIZE_REG_RSP]; +char si_register[SIZE_REG_SI]; +char vi_register[SIZE_REG_VI]; +char ri_register[SIZE_REG_RI]; +char ai_register[SIZE_REG_AI]; +char dpc_register[SIZE_REG_DPC]; +char dps_register[SIZE_REG_DPS]; + +char *rdram; /* 0x800000 bytes */ +char SP_DMEM[0x1000]; +char SP_IMEM[0x1000]; +char PIF_RAM[0x40]; + +char flashram[SIZE_FLASHRAM_INFO]; + +char *tlb_LUT_r; /* 0x400000 bytes */ +char *tlb_LUT_w; /* 0x400000 bytes */ + +char llbit[4]; +char reg[32][8]; +char reg_cop0[32][4]; +char lo[8]; +char hi[8]; +char reg_cop1_fgr_64[32][8]; +char FCR0[4]; +char FCR31[4]; +char tlb_e[32][SIZE_TLB_ENTRY]; +char PCaddr[4]; + +char next_interupt[4]; +char next_vi[4]; +char vi_field[4]; + +char eventqueue[SIZE_MAX_EVENTQUEUE]; + +/* savestate data parameters calculated from file contents */ +int queuelength = 0; + +/* Forward declarations for functions */ +void printhelp(const char *progname); + +int allocate_memory(void); +void free_memory(void); + +int load_original_mupen64(const char *filename); +int save_newest(const char *filename); + +/* Main Function - parse arguments, check version, load state file, overwrite state file with new one */ +int main(int argc, char *argv[]) +{ + FILE *pfTest; + gzFile f; + char *filename; + char magictag[8]; + unsigned char inbuf[4]; + int (*load_function)(const char *) = NULL; + int iVersion; + + /* start by parsing the command-line arguments */ + if (argc != 2 || strncmp(argv[1], "-h", 2) == 0 || strncmp(argv[1], "--help", 6) == 0) + { + printhelp(argv[0]); + return 1; + } + filename = argv[1]; + pfTest = fopen(filename, "rb"); + if (pfTest == NULL) + { + printf("Error: cannot open savestate file '%s' for reading.\n", filename); + return 2; + } + fclose(pfTest); + + /* try to determine the version of this savestate file */ + f = gzopen(filename, "rb"); + if (f == NULL) + { + printf("Error: state file '%s' is corrupt\n", filename); + return 3; + } + if (gzread(f, magictag, 8) != 8 || gzread(f, inbuf, 4) != 4) + { + printf("Error: state file '%s' is corrupt: end of savestate file while reading header.\n", filename); + gzclose(f); + return 4; + } + gzclose(f); + iVersion = inbuf[0]; + iVersion = (iVersion << 8) | inbuf[1]; + iVersion = (iVersion << 8) | inbuf[2]; + iVersion = (iVersion << 8) | inbuf[3]; + + /* determine which type of savestate file to load, based on savestate version */ + if (strncmp(magictag, savestate_magic, 8) != 0) + { + printf("Warning: old savestate file format. This is presumed to be from the original Mupen64 or Mupen64Plus version 1.4 or earlier.\n"); + load_function = load_original_mupen64; + } + else if (iVersion == savestate_newest_version) + { + printf("This savestate file is already up to date (version %08x)\n", savestate_newest_version); + return 0; + } + else + { + printf("This savestate file uses an unknown version (%08x)\n", iVersion); + return 5; + } + + /* allocate memory for savestate data */ + if (allocate_memory() != 0) + { + printf("Error: couldn't allocate memory for savestate data storage.\n"); + return 6; + } + + /* load the savestate file */ + if (load_function(filename) != 0) + { + free_memory(); + return 7; + } + + /* write new updated savestate file */ + if (save_newest(filename) != 0) + { + free_memory(); + return 8; + } + + /* free the memory and return */ + printf("Savestate file '%s' successfully converted to latest version (%08x).\n", filename, savestate_newest_version); + free_memory(); + return 0; +} + +void printhelp(const char *progname) +{ + printf("%s - convert older Mupen64Plus savestate files to most recent version.\n\n", progname); + printf("Usage: %s [-h] [--help] \n\n", progname); + printf(" -h, --help: display this message\n"); + printf(" : full path to savestate file which will be overwritten with latest version.\n"); +} + +int allocate_memory(void) +{ + rdram = malloc(0x800000); + if (rdram == NULL) + return 1; + + tlb_LUT_r = malloc(0x400000); + if (tlb_LUT_r == NULL) + { + free_memory(); + return 2; + } + + tlb_LUT_w = malloc(0x400000); + if (tlb_LUT_w == NULL) + { + free_memory(); + return 3; + } + + return 0; +} + +void free_memory(void) +{ + if (rdram != NULL) + { + free(rdram); + rdram = NULL; + } + + if (tlb_LUT_r != NULL) + { + free(tlb_LUT_r); + tlb_LUT_r = NULL; + } + + if (tlb_LUT_w != NULL) + { + free(tlb_LUT_w); + tlb_LUT_w = NULL; + } +} + +/* State Loading Functions */ +int load_original_mupen64(const char *filename) +{ + char buffer[4]; + int i; + gzFile f; + + f = gzopen(filename, "rb"); + + if (f == NULL) + { + printf("Error: savestate file '%s' is corrupt.\n", filename); + return 1; + } + + gzread(f, rom_md5, 32); + + gzread(f, rdram_register, SIZE_REG_RDRAM); + gzread(f, mips_register, SIZE_REG_MIPS); + gzread(f, pi_register, SIZE_REG_PI); + gzread(f, sp_register, SIZE_REG_SP); + gzread(f, rsp_register, SIZE_REG_RSP); + gzread(f, si_register, SIZE_REG_SI); + gzread(f, vi_register, SIZE_REG_VI); + gzread(f, ri_register, SIZE_REG_RI); + gzread(f, ai_register, SIZE_REG_AI); + gzread(f, dpc_register, SIZE_REG_DPC); + gzread(f, dps_register, SIZE_REG_DPS); + + gzread(f, rdram, 0x800000); + gzread(f, SP_DMEM, 0x1000); + gzread(f, SP_IMEM, 0x1000); + gzread(f, PIF_RAM, 0x40); + + gzread(f, flashram, SIZE_FLASHRAM_INFO); + + memset(tlb_LUT_r, 0, 0x400000); + memset(tlb_LUT_w, 0, 0x400000); + gzread(f, tlb_LUT_r, 0x100000); + gzread(f, tlb_LUT_w, 0x100000); + + gzread(f, llbit, 4); + gzread(f, reg, 32*8); + for (i = 0; i < 32; i++) + { + gzread(f, reg_cop0[i], 4); + gzread(f, buffer, 4); /* for compatibility with older versions. */ + } + gzread(f, lo, 8); + gzread(f, hi, 8); + gzread(f, reg_cop1_fgr_64[0], 32 * 8); + gzread(f, FCR0, 4); + gzread(f, FCR31, 4); + gzread(f, tlb_e[0], 32 * SIZE_TLB_ENTRY); + gzread(f, PCaddr, 4); + + gzread(f, next_interupt, 4); + gzread(f, next_vi, 4); + gzread(f, vi_field, 4); + + queuelength = 0; + while(queuelength < SIZE_MAX_EVENTQUEUE) + { + if (gzread(f, eventqueue + queuelength, 4) != 4) + { + printf("Error: savestate file '%s' is corrupt.\n", filename); + return 2; + } + if (*((unsigned int*) &eventqueue[queuelength]) == 0xFFFFFFFF) + { + queuelength += 4; + break; + } + gzread(f, eventqueue + queuelength + 4, 4); + queuelength += 8; + } + + if (queuelength >= SIZE_MAX_EVENTQUEUE) + { + printf("Error: savestate file '%s' has event queue larger than %i bytes.\n", filename, SIZE_MAX_EVENTQUEUE); + return 3; + } + + gzclose(f); + return 0; +} + +/* State Saving Functions */ + +int save_newest(const char *filename) +{ + unsigned char outbuf[4]; + gzFile f; + + f = gzopen(filename, "wb"); + + /* write magic number */ + gzwrite(f, savestate_magic, 8); + + /* write savestate file version in big-endian */ + outbuf[0] = (savestate_newest_version >> 24) & 0xff; + outbuf[1] = (savestate_newest_version >> 16) & 0xff; + outbuf[2] = (savestate_newest_version >> 8) & 0xff; + outbuf[3] = (savestate_newest_version >> 0) & 0xff; + gzwrite(f, outbuf, 4); + + gzwrite(f, rom_md5, 32); + + gzwrite(f, rdram_register, SIZE_REG_RDRAM); + gzwrite(f, mips_register, SIZE_REG_MIPS); + gzwrite(f, pi_register, SIZE_REG_PI); + gzwrite(f, sp_register, SIZE_REG_SP); + gzwrite(f, rsp_register, SIZE_REG_RSP); + gzwrite(f, si_register, SIZE_REG_SI); + gzwrite(f, vi_register, SIZE_REG_VI); + gzwrite(f, ri_register, SIZE_REG_RI); + gzwrite(f, ai_register, SIZE_REG_AI); + gzwrite(f, dpc_register, SIZE_REG_DPC); + gzwrite(f, dps_register, SIZE_REG_DPS); + + gzwrite(f, rdram, 0x800000); + gzwrite(f, SP_DMEM, 0x1000); + gzwrite(f, SP_IMEM, 0x1000); + gzwrite(f, PIF_RAM, 0x40); + + gzwrite(f, flashram, SIZE_FLASHRAM_INFO); + + gzwrite(f, tlb_LUT_r, 0x400000); + gzwrite(f, tlb_LUT_w, 0x400000); + + gzwrite(f, llbit, 4); + gzwrite(f, reg[0], 32*8); + gzwrite(f, reg_cop0[0], 32*4); + gzwrite(f, lo, 8); + gzwrite(f, hi, 8); + gzwrite(f, reg_cop1_fgr_64[0], 32*8); + gzwrite(f, FCR0, 4); + gzwrite(f, FCR31, 4); + gzwrite(f, tlb_e[0], 32 * SIZE_TLB_ENTRY); + gzwrite(f, PCaddr, 4); + + gzwrite(f, next_interupt, 4); + gzwrite(f, next_vi, 4); + gzwrite(f, vi_field, 4); + + gzwrite(f, eventqueue, queuelength); + + gzclose(f); + return 0; +} +