From: Shamus Hammons Date: Sat, 1 Nov 2008 14:06:56 +0000 (+0000) Subject: Forgot missing new files... :-P X-Git-Tag: 2.0.0~44 X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f7cb31e9b5827ba24796b0829ed2e2942fe41048;p=virtualjaguar Forgot missing new files... :-P --- diff --git a/src/file.cpp b/src/file.cpp new file mode 100644 index 0000000..58d22e7 --- /dev/null +++ b/src/file.cpp @@ -0,0 +1,339 @@ +// +// FILE.CPP +// +// File support +// by James L. Hammons +// + +#include "file.h" + +#include +#include +#include "crc32.h" +#include "eeprom.h" +#include "jaguar.h" +#include "log.h" +#include "unzip.h" +#include "zlib.h" + +// Private function prototypes + +static int gzfilelength(gzFile gd); + +// +// Generic ROM loading +// +uint32 JaguarLoadROM(uint8 * rom, char * path) +{ +// We really should have some kind of sanity checking for the ROM size here to prevent +// a buffer overflow... !!! FIX !!! +#warning !!! FIX !!! Should have sanity checking for ROM size to prevent buffer overflow! + uint32 romSize = 0; + +WriteLog("JaguarLoadROM: Attempting to load file '%s'...", path); + char * ext = strrchr(path, '.'); +if (ext == NULL) + WriteLog("FAILED!\n"); +else + WriteLog("Succeeded in finding extension (%s)!\n", ext); + + if (ext != NULL) + { + WriteLog("VJ: Loading \"%s\"...", path); + + if (strcasecmp(ext, ".zip") == 0) + { + // Handle ZIP file loading here... + WriteLog("(ZIPped)..."); + + if (load_zipped_file(0, 0, path, NULL, &rom, &romSize) == -1) + { + WriteLog("Failed!\n"); + return 0; + } + } + else + { +/* FILE * fp = fopen(path, "rb"); + + if (fp == NULL) + { + WriteLog("Failed!\n"); + return 0; + } + + fseek(fp, 0, SEEK_END); + romSize = ftell(fp); + fseek(fp, 0, SEEK_SET); + fread(rom, 1, romSize, fp); + fclose(fp);*/ + + // Handle gzipped files transparently [Adam Green]... + + gzFile fp = gzopen(path, "rb"); + + if (fp == NULL) + { + WriteLog("Failed!\n"); + return 0; + } + + romSize = gzfilelength(fp); + gzseek(fp, 0, SEEK_SET); + gzread(fp, rom, romSize); + gzclose(fp); + } + + WriteLog("OK (%i bytes)\n", romSize); + } + + return romSize; +} + +// +// Jaguar file loading +// +bool JaguarLoadFile(char * path) +{ +// jaguarRomSize = JaguarLoadROM(mem, path); + jaguarRomSize = JaguarLoadROM(jaguarMainRom, path); + +/*//This is not *nix friendly for some reason... +// if (!UserSelectFile(path, newPath)) + if (!UserSelectFile((strlen(path) == 0 ? (char *)"." : path), newPath)) + { + WriteLog("VJ: Could not find valid ROM in directory \"%s\"...\nAborting!\n", path); + log_done(); + exit(0); + }*/ + + if (jaguarRomSize == 0) + { +// WriteLog("VJ: Could not load ROM from file \"%s\"...\nAborting!\n", newPath); + WriteLog("GUI: Could not load ROM from file \"%s\"...\nAborting load!\n", path); +// Need to do something else here, like throw up an error dialog instead of aborting. !!! FIX !!! +// log_done(); +// exit(0); + return false; // This is a start... + } + + jaguarMainRomCRC32 = crc32_calcCheckSum(jaguarMainRom, jaguarRomSize); + WriteLog("CRC: %08X\n", (unsigned int)jaguarMainRomCRC32); + EepromInit(); + + jaguarRunAddress = 0x802000; + + char * ext = strrchr(path, '.'); // Get the file's extension for non-cartridge checking + +//NOTE: Should fix JaguarLoadROM() to replace .zip with what's *in* the zip (.abs, .j64, etc.) + if (strcasecmp(ext, ".rom") == 0) + { + // File extension ".ROM": Alpine image that loads/runs at $802000 + WriteLog("GUI: Setting up homebrew (ROM)... Run address: 00802000, length: %08X\n", jaguarRomSize); + + for(int i=jaguarRomSize-1; i>=0; i--) + jaguarMainRom[0x2000 + i] = jaguarMainRom[i]; + + memset(jaguarMainRom, 0xFF, 0x2000); +/* memcpy(jaguar_mainRam, jaguar_mainRom, jaguarRomSize); + memset(jaguar_mainRom, 0xFF, 0x600000); + memcpy(jaguar_mainRom + 0x2000, jaguar_mainRam, jaguarRomSize); + memset(jaguar_mainRam, 0x00, 0x400000);*/ + +/* +Stubulator ROM vectors... +handler 001 at $00E00008 +handler 002 at $00E008DE +handler 003 at $00E008E2 +handler 004 at $00E008E6 +handler 005 at $00E008EA +handler 006 at $00E008EE +handler 007 at $00E008F2 +handler 008 at $00E0054A +handler 009 at $00E008FA +handler 010 at $00000000 +handler 011 at $00000000 +handler 012 at $00E008FE +handler 013 at $00E00902 +handler 014 at $00E00906 +handler 015 at $00E0090A +handler 016 at $00E0090E +handler 017 at $00E00912 +handler 018 at $00E00916 +handler 019 at $00E0091A +handler 020 at $00E0091E +handler 021 at $00E00922 +handler 022 at $00E00926 +handler 023 at $00E0092A +handler 024 at $00E0092E +handler 025 at $00E0107A +handler 026 at $00E0107A +handler 027 at $00E0107A +handler 028 at $00E008DA +handler 029 at $00E0107A +handler 030 at $00E0107A +handler 031 at $00E0107A +handler 032 at $00000000 + +Let's try setting up the illegal instruction vector for a stubulated jaguar... +*/ +/* SET32(jaguar_mainRam, 0x08, 0x00E008DE); + SET32(jaguar_mainRam, 0x0C, 0x00E008E2); + SET32(jaguar_mainRam, 0x10, 0x00E008E6); // <-- Should be here (it is)... + SET32(jaguar_mainRam, 0x14, 0x00E008EA);//*/ + + // Try setting the vector to say, $1000 and putting an instruction there that loops forever: + // This kludge works! Yeah! + SET32(jaguarMainRam, 0x10, 0x00001000); + SET16(jaguarMainRam, 0x1000, 0x60FE); // Here: bra Here + } + else if (strcasecmp(ext, ".abs") == 0) + { + // File extension ".ABS": Atari linker output file with header (w/o is useless to us here) + +/* +ABS Format sleuthing (LBUGDEMO.ABS): + +000000 60 1B 00 00 05 0C 00 04 62 C0 00 00 04 28 00 00 +000010 12 A6 00 00 00 00 00 80 20 00 FF FF 00 80 25 0C +000020 00 00 40 00 + +DRI-format file detected... +Text segment size = 0x0000050c bytes +Data segment size = 0x000462c0 bytes +BSS Segment size = 0x00000428 bytes +Symbol Table size = 0x000012a6 bytes +Absolute Address for text segment = 0x00802000 +Absolute Address for data segment = 0x0080250c +Absolute Address for BSS segment = 0x00004000 + +(CRZDEMO.ABS): +000000 01 50 00 03 00 00 00 00 00 03 83 10 00 00 05 3b +000010 00 1c 00 03 00 00 01 07 00 00 1d d0 00 03 64 98 +000020 00 06 8b 80 00 80 20 00 00 80 20 00 00 80 3d d0 + +000030 2e 74 78 74 00 00 00 00 00 80 20 00 00 80 20 00 .txt (+36 bytes) +000040 00 00 1d d0 00 00 00 a8 00 00 00 00 00 00 00 00 +000050 00 00 00 00 00 00 00 20 +000058 2e 64 74 61 00 00 00 00 00 80 3d d0 00 80 3d d0 .dta (+36 bytes) +000068 00 03 64 98 00 00 1e 78 00 00 00 00 00 00 00 00 +000078 00 00 00 00 00 00 00 40 +000080 2e 62 73 73 00 00 00 00 00 00 50 00 00 00 50 00 .bss (+36 bytes) +000090 00 06 8b 80 00 03 83 10 00 00 00 00 00 00 00 00 +0000a0 00 00 00 00 00 00 00 80 + +Header size is $A8 bytes... + +BSD/COFF format file detected... +3 sections specified +Symbol Table offset = 230160 ($00038310) +Symbol Table contains 1339 symbol entries ($0000053B) +The additional header size is 28 bytes ($001C) +Magic Number for RUN_HDR = 0x00000107 +Text Segment Size = 7632 ($00001DD0) +Data Segment Size = 222360 ($00036498) +BSS Segment Size = 428928 ($00068B80) +Starting Address for executable = 0x00802000 +Start of Text Segment = 0x00802000 +Start of Data Segment = 0x00803dd0 +*/ + if (jaguarMainRom[0] == 0x60 && jaguarMainRom[1] == 0x1B) + { + uint32 loadAddress = GET32(jaguarMainRom, 0x16), //runAddress = GET32(jaguar_mainRom, 0x2A), + codeSize = GET32(jaguarMainRom, 0x02) + GET32(jaguarMainRom, 0x06); + WriteLog("GUI: Setting up homebrew (ABS-1)... Run address: %08X, length: %08X\n", loadAddress, codeSize); + + if (loadAddress < 0x800000) + memcpy(jaguarMainRam + loadAddress, jaguarMainRom + 0x24, codeSize); + else + { + for(int i=codeSize-1; i>=0; i--) + jaguarMainRom[(loadAddress - 0x800000) + i] = jaguarMainRom[i + 0x24]; +/* memcpy(jaguar_mainRam, jaguar_mainRom + 0x24, codeSize); + memset(jaguar_mainRom, 0xFF, 0x600000); + memcpy(jaguar_mainRom + (loadAddress - 0x800000), jaguar_mainRam, codeSize); + memset(jaguar_mainRam, 0x00, 0x400000);*/ + } + + jaguarRunAddress = loadAddress; + } + else if (jaguarMainRom[0] == 0x01 && jaguarMainRom[1] == 0x50) + { + uint32 loadAddress = GET32(jaguarMainRom, 0x28), runAddress = GET32(jaguarMainRom, 0x24), + codeSize = GET32(jaguarMainRom, 0x18) + GET32(jaguarMainRom, 0x1C); + WriteLog("GUI: Setting up homebrew (ABS-2)... Run address: %08X, length: %08X\n", runAddress, codeSize); + + if (loadAddress < 0x800000) + memcpy(jaguarMainRam + loadAddress, jaguarMainRom + 0xA8, codeSize); + else + { + for(int i=codeSize-1; i>=0; i--) + jaguarMainRom[(loadAddress - 0x800000) + i] = jaguarMainRom[i + 0xA8]; +/* memcpy(jaguar_mainRam, jaguar_mainRom + 0xA8, codeSize); + memset(jaguar_mainRom, 0xFF, 0x600000); + memcpy(jaguar_mainRom + (loadAddress - 0x800000), jaguar_mainRam, codeSize); + memset(jaguar_mainRam, 0x00, 0x400000);*/ + } + + jaguarRunAddress = runAddress; + } + else + { + WriteLog("GUI: Couldn't find correct ABS format: %02X %02X\n", jaguarMainRom[0], jaguarMainRom[1]); + return false; + } + } + else if (strcasecmp(ext, ".jag") == 0) + { + // File extension ".JAG": Atari server file with header +//NOTE: The bytes 'JAGR' should also be at position $1C... +// Also, there's *always* a $601A header at position $00... + if (jaguarMainRom[0] == 0x60 && jaguarMainRom[1] == 0x1A) + { + uint32 loadAddress = GET32(jaguarMainRom, 0x22), runAddress = GET32(jaguarMainRom, 0x2A); +//This is not always right! Especially when converted via bin2jag1!!! +//We should have access to the length of the furshlumiger file that was loaded anyway! +//Now, we do! ;-) +// uint32 progLength = GET32(jaguar_mainRom, 0x02); +//jaguarRomSize +//jaguarRunAddress +// WriteLog("Jaguar: Setting up PD ROM... Run address: %08X, length: %08X\n", runAddress, progLength); +// memcpy(jaguar_mainRam + loadAddress, jaguar_mainRom + 0x2E, progLength); + WriteLog("GUI: Setting up homebrew (JAG)... Run address: %08X, length: %08X\n", runAddress, jaguarRomSize - 0x2E); + memcpy(jaguarMainRam + loadAddress, jaguarMainRom + 0x2E, jaguarRomSize - 0x2E); +// SET32(jaguar_mainRam, 4, runAddress); + jaguarRunAddress = runAddress; + } + else + return false; + } + // .J64 (Jaguar cartridge ROM image) is implied by the FileList object... + + return true; +} + +// +// Get the length of a (possibly) gzipped file +// +static int gzfilelength(gzFile gd) +{ + int size = 0, length = 0; + unsigned char buffer[0x10000]; + + gzrewind(gd); + + do + { + // Read in chunks until EOF + size = gzread(gd, buffer, 0x10000); + + if (size <= 0) + break; + + length += size; + } + while (!gzeof(gd)); + + gzrewind(gd); + return length; +} diff --git a/src/file.h b/src/file.h new file mode 100644 index 0000000..7fa3daf --- /dev/null +++ b/src/file.h @@ -0,0 +1,23 @@ +// +// FILE.H +// +// File support +// + +#ifndef __FILE_H__ +#define __FILE_H__ + +#include "types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +uint32 JaguarLoadROM(uint8 * rom, char * path); +bool JaguarLoadFile(char * path); + +#ifdef __cplusplus +} +#endif + +#endif // __FILE_H__