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initc.c
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initc.c
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/*
Copyright (C) 1997-2008 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )
http://www.zsnes.com
http://sourceforge.net/projects/zsnes
https://zsnes.bountysource.com
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef __UNIXSDL__
#include "gblhdr.h"
#include "linux/audio.h"
#else
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#endif
#include "asm_call.h"
#include "c_init.h"
#include "c_vcache.h"
#include "cfg.h"
#include "chips/c_dsp2proc.h"
#include "chips/c_sa1regs.h"
#include "chips/msu1emu.h"
#include "cpu/c_regs.h"
#include "cpu/c_regsw.h"
#include "cpu/execute.h"
#include "cpu/memtable.h"
#include "cpu/regs.h"
#include "cpu/spc700.h"
#include "endmem.h"
#include "gui/gui.h"
#include "gui/guimisc.h"
#include "gui/guiwindp.h"
#include "init.h"
#include "initc.h"
#include "input.h"
#include "macros.h"
#include "ui.h"
#include "video/procvid.h"
#include "zpath.h"
#ifdef QT_DEBUGGER
#include "debugger/load.h"
#endif
#define NUMCONV_FR4
#include "numconv.h"
#ifndef __GNUC__
#define strcasecmp stricmp
#define strncasecmp strnicmp
#endif
// NSRT Goodness
#define Lo 0x7FC0
#define Hi 0xFFC0
#define EHi 0x40FFC0
#define ELo 0x407FC0 //FuSoYa: add support for ExLoROM
#define MB_bytes 0x100000
#define Mbit_bytes 0x20000
// Offsets to add to infoloc start to reach particular variable
#define BankOffset 21 // Contains Speed as well
#define TypeOffset 22
#define ROMSizeOffset 23
#define SRAMSizeOffset 24
#define CountryOffset 25
#define CompanyOffset 26
#define VersionOffset 27
#define InvCSLowOffset 28
#define InvCSHiOffset 29
#define CSLowOffset 30
#define CSHiOffset 31
// Additional defines for the BS header
#define BSYearOffset 21 // Not sure how to calculate year yet
#define BSMonthOffset 22
#define BSDayOffset 23
#define BSBankOffset 24
#define BSSizeOffset 25 // Contains Type as well
// 26 - 31 is the same
#define ResetLoOffset 60
#define ResetHiOffset 61
u1 ComboHeader[23] = "Key Combination File\x1A\x01";
u1 sramsavedis;
// Some archaic code from an unfinished Dynarec
extern uint32_t curexecstate;
void procexecloop(void)
{
curexecstate &= 0xFFFFFF00;
if (spcon) {
curexecstate += 3;
} else {
curexecstate += 1;
}
}
void Debug_WriteString(char* str)
{
FILE* fp = 0;
fp = fopen_dir(ZCfgPath, "zsnes.dbg", "w");
if (!fp) {
return;
}
fputs(str, fp);
fclose(fp);
}
// I want to port over the more complicated
// functions from init.asm, or replace with
// better versions from NSRT. -Nach
// init.asm goodness
extern uint32_t NumofBanks;
extern uint32_t NumofBytes;
static uint8_t Interleaved;
uint32_t maxromspace;
uint32_t curromspace;
uint32_t infoloc;
uint32_t ramsize;
uint32_t ramsizeand;
bool SplittedROM;
uint32_t addOnStart;
uint32_t addOnSize;
// Deinterleave functions
bool validChecksum(uint8_t* ROM, int32_t BankLoc)
{
if (ROM[BankLoc + InvCSLowOffset] + (ROM[BankLoc + InvCSHiOffset] << 8) + ROM[BankLoc + CSLowOffset] + (ROM[BankLoc + CSHiOffset] << 8) == 0xFFFF) {
return (true);
}
return (false);
}
bool valid_normal_bank(uint8_t bankbyte)
{
switch (bankbyte) {
case 32:
case 33:
case 48:
case 49:
return (true);
break;
}
return (false);
}
bool EHiHeader(uint8_t* ROM, int32_t BankLoc)
{
if (validChecksum(ROM, BankLoc) && (ROM[BankLoc + BankOffset] == 53 || ROM[BankLoc + BankOffset] == 37)) {
return (true);
}
return (false);
}
//FuSoYa: add support for ExLoROM
bool ELoHeader(unsigned char *ROM, int BankLoc)
{
if (validChecksum(ROM, BankLoc) && (ROM[BankLoc+BankOffset] == 0x30 || ROM[BankLoc+BankOffset] == 0x20)) {
return(true);
}
return(false);
}
void SwapData(uint32_t* loc1, uint32_t* loc2, uint32_t amount)
{
uint32_t temp;
while (amount--) {
temp = *loc1;
*loc1++ = *loc2;
*loc2++ = temp;
}
}
void swapBlocks(uint8_t* blocks)
{
uint_fast32_t i, j;
for (i = 0; i < NumofBanks; i++) {
for (j = 0; j < NumofBanks; j++) {
if (blocks[j] == (int8_t)i) {
int8_t b;
SwapData(((uint32_t*)romdata + blocks[i] * 0x2000), ((uint32_t*)romdata + blocks[j] * 0x2000), 0x2000);
b = blocks[j];
blocks[j] = blocks[i];
blocks[i] = b;
break;
}
}
}
}
void deintlv1()
{
uint8_t blocks[256];
int_fast32_t i;
int32_t numblocks = NumofBanks / 2;
for (i = 0; i < numblocks; i++) {
blocks[i * 2] = i + numblocks;
blocks[i * 2 + 1] = i;
}
swapBlocks(blocks);
}
void CheckIntl1(uint8_t* ROM)
{
uint32_t ROMmidPoint = NumofBytes / 2;
if (validChecksum(ROM, ROMmidPoint + Lo) && !validChecksum(ROM, Lo) && ROM[ROMmidPoint + Lo + CountryOffset] < 14) // Country Code
{
deintlv1();
Interleaved = true;
} else if (validChecksum(ROM, Lo) && !validChecksum(ROM, Hi) && ROM[Lo + CountryOffset] < 14 && // Country code
// Rom make up
(ROM[Lo + BankOffset] == 33 || ROM[Lo + BankOffset] == 49 || ROM[Lo + BankOffset] == 53 || ROM[Lo + BankOffset] == 58)) {
if (ROM[Lo + 20] == 32 || // Check that Header name did not overflow
!(ROM[Lo + BankOffset] == ROM[Lo + 20] || ROM[Lo + BankOffset] == ROM[Lo + 19] || ROM[Lo + BankOffset] == ROM[Lo + 18] || ROM[Lo + BankOffset] == ROM[Lo + 17])) {
deintlv1();
Interleaved = true;
}
}
}
void CheckIntlEHi(uint8_t* ROM)
{
if (EHiHeader(ROM, Lo)) {
uint32_t oldNumBanks = NumofBanks;
// Swap 4MB ROM with the other one
SwapData((uint32_t*)romdata, ((uint32_t*)romdata + ((NumofBytes - 0x400000) / 4)), 0x100000);
// Deinterleave the 4MB ROM first
NumofBanks = 128;
deintlv1();
// Now the other one
NumofBanks = oldNumBanks - 128;
romdata += 0x100000; // Ofset pointer
deintlv1();
// Now fix the data and we're done
NumofBanks = oldNumBanks;
romdata -= 0x100000;
Interleaved = true;
}
}
// ROM loading functions, which some strangly enough were in guiload.inc
bool AllASCII(unsigned char* b, int32_t size)
{
int_fast32_t i;
for (i = 0; i < size; i++) {
if (b[i] && (b[i] < 32 || b[i] > 126)) {
return (false);
}
}
return (true);
}
// Code to detect if opcode sequence is a valid and popular one for an SNES ROM
// Code by Cowering
static bool valid_start_sequence(uint8_t opcode1, uint8_t opcode2, uint8_t opcode3)
{
switch (opcode1) {
case 0x78:
case 0x5c:
case 0x18:
case 0xad:
return (true);
break;
case 0x4b:
if (opcode2 == 0xab && (opcode3 == 0x18 || opcode3 == 0x20)) {
return (true);
}
break;
case 0x4c:
if ((opcode2 == 0x00 || opcode2 == 0xc0) && opcode3 == 0x84) {
return (true);
}
if (opcode2 == 0x6d && opcode3 == 0x86) {
return (true);
}
if (opcode2 == 0x00 && opcode3 == 0x80) {
return (true);
}
break;
case 0xc2:
if (opcode2 == 0x30 && opcode3 == 0xa9) {
return (true);
}
break;
case 0x20:
if ((opcode2 == 0x16 || opcode2 == 0x06) && opcode3 == 0x80) {
return (true);
}
break;
case 0x80:
if ((opcode2 == 0x16 && opcode3 == 0x4c) || (opcode2 == 0x07 && opcode3 == 0x82)) {
return (true);
}
break;
case 0x9c:
if (opcode2 == 0x00 && opcode3 == 0x21) {
return (true);
}
break;
case 0xa2:
if (opcode2 == 0xff && opcode3 == 0x86) {
return (true);
}
break;
case 0xa9:
if ((opcode2 == 0x00 && (opcode3 = 0x48 || opcode3 == 0x4b)) || (opcode2 == 0x8f && opcode3 == 0x8d) || (opcode2 == 0x20 && opcode3 == 0x4b) || (opcode2 == 0x1f && opcode3 == 0x4b)) {
return (true);
}
break;
}
return (false);
}
static int16_t valid_reset(uint8_t* Buffer)
{
uint8_t* ROM = romdata;
uint16_t Reset = Buffer[ResetLoOffset] | ((uint16_t)Buffer[ResetHiOffset] << 8);
if ((Reset != 0xFFFF) && (Reset & 0x8000)) {
uint8_t opcode1 = ROM[(Reset + 0) & 0x7FFF];
uint8_t opcode2 = ROM[(Reset + 1) & 0x7FFF];
uint8_t opcode3 = ROM[(Reset + 2) & 0x7FFF];
if (valid_start_sequence(opcode1, opcode2, opcode3)) {
return (10);
}
return (2);
}
return (-4);
}
int32_t InfoScore(uint8_t* Buffer)
{
int32_t score = valid_reset(Buffer);
if (validChecksum(Buffer, 0)) {
score += 5;
}
if (Buffer[CompanyOffset] == 0x33) {
score += 3;
}
if (!Buffer[ROMSizeOffset]) {
score += 2;
}
if ((1 << (Buffer[ROMSizeOffset] - 7)) > 48) {
score -= 2;
}
if ((8 << Buffer[SRAMSizeOffset]) > 1024) {
score -= 2;
}
if (Buffer[CountryOffset] < 14) {
score += 2;
}
if (!AllASCII(Buffer, 20)) {
score -= 2;
}
if (valid_normal_bank(Buffer[BSBankOffset])) {
score += 2;
}
return (score);
}
extern uint8_t ForceHiLoROM;
void BankCheck()
{
uint8_t* ROM = romdata;
infoloc = 0;
Interleaved = false;
if (NumofBytes < Lo) {
romtype = 1;
infoloc = 1; // Whatever, we just need a valid location
}
if (NumofBytes < Hi) {
romtype = 1;
infoloc = Lo;
}
if (NumofBytes >= 0x500000) {
// Deinterleave if neccesary
CheckIntlEHi(ROM);
if (EHiHeader(ROM, EHi)) {
romtype = 2;
infoloc = EHi;
} else if (ELoHeader(ROM, ELo)) { //FuSoYa:Add support for ExLoROM
romtype = 1;
infoloc = ELo;
}
}
if (!infoloc) {
static bool CommandLineForce2 = false;
int32_t loscore, hiscore;
// Deinterleave if neccesary
CheckIntl1(ROM);
loscore = InfoScore(ROM + Lo);
hiscore = InfoScore(ROM + Hi);
switch (ROM[Lo + BankOffset]) {
case 32:
case 35:
case 48:
case 50:
loscore += 3;
break;
}
switch (ROM[Hi + BankOffset]) {
case 33:
case 49:
case 53:
case 58:
hiscore += 3;
break;
}
/*
Force code.
ForceHiLoROM is from the GUI.
forceromtype is from Command line, we have a static var
to prevent forcing a secong game loaded from the GUI when
the first was loaded from the command line with forcing.
*/
if (ForceHiLoROM == 1 || (forceromtype == 1 && !CommandLineForce2)) {
CommandLineForce2 = true;
loscore += 50;
} else if (ForceHiLoROM == 2 || (forceromtype == 2 && !CommandLineForce2)) {
CommandLineForce2 = true;
hiscore += 50;
}
if (hiscore > loscore) {
romtype = 2;
infoloc = Hi;
} else {
romtype = 1;
infoloc = Lo;
}
}
}
// Chip detection functions
bool CHIPBATT, BSEnable, C4Enable, DSP1Enable, DSP2Enable, DSP3Enable;
bool DSP4Enable, OBCEnable, RTCEnable, SA1Enable, SDD1Enable, SFXEnable;
bool SETAEnable; // ST010 & 11
bool SGBEnable, SPC7110Enable, ST18Enable, MSUEnable;
void chip_detect()
{
uint8_t* ROM = romdata;
C4Enable = RTCEnable = SA1Enable = SDD1Enable = OBCEnable = CHIPBATT = false;
SGBEnable = ST18Enable = DSP1Enable = DSP2Enable = DSP3Enable = false;
DSP4Enable = SPC7110Enable = BSEnable = SFXEnable = SETAEnable = MSUEnable = false;
// DSP Family
if (ROM[infoloc + TypeOffset] == 3) {
if (ROM[infoloc + BankOffset] == 48) {
DSP4Enable = true;
} else {
DSP1Enable = true;
}
return;
}
if (ROM[infoloc + TypeOffset] == 5) {
CHIPBATT = true;
if (ROM[infoloc + BankOffset] == 32) {
DSP2Enable = true;
} else if (ROM[infoloc + BankOffset] == 48 && ROM[infoloc + CompanyOffset] == 0xB2) // Bandai
{
DSP3Enable = true;
} else {
DSP1Enable = true;
}
return;
}
// [sneed]: MSU detection
sprintf(MSU_BasePath, "%s%s", ZRomPath, ZCartName);
MSUEnable = readMSU();
// [sneed]: add support for FastROM superFX roms
switch ((uint16_t)ROM[infoloc + BankOffset] | (ROM[infoloc + TypeOffset] << 8)) {
case 0x1320: // Mario Chip 1
case 0x1330: // Mario Chip 1 + FastROM
case 0x1420: // GSU-x
case 0x1430: // GSU-x + FastROM
SFXEnable = true;
return;
break;
case 0x1520: // GSU-x + Battery
case 0x1530: // GSU-x + Battery + FastROM
case 0x1A20: // GSU-1 + Battery + Start in 21MHz
case 0x1A30: // GSU-1 + Battery + Start in 21MHz + FastROM
SFXEnable = true;
CHIPBATT = true;
return;
break;
case 0x2530:
OBCEnable = true;
CHIPBATT = true;
return;
break;
case 0x3423:
SA1Enable = true;
return;
break;
case 0x3223: // One sample game seems to use this for some reason
case 0x3523:
SA1Enable = true;
CHIPBATT = true;
return;
break;
case 0x4332:
SDD1Enable = true;
return;
break;
case 0x4532:
SDD1Enable = true;
CHIPBATT = true;
return;
break;
case 0x5535:
RTCEnable = true;
CHIPBATT = true;
return;
break;
case 0xE320:
SGBEnable = true;
return;
break;
case 0xF320:
C4Enable = true;
return;
break;
case 0xF530:
ST18Enable = true;
CHIPBATT = true; // Check later if this should be removed
return;
break;
case 0xF53A:
SPC7110Enable = true;
CHIPBATT = true;
return;
break;
case 0xF630:
SETAEnable = true;
CHIPBATT = true;
return;
break;
case 0xF93A:
SPC7110Enable = true;
RTCEnable = true;
CHIPBATT = true;
return;
break;
}
// BS Dump
if ((ROM[infoloc + CompanyOffset] == 0x33 || ROM[infoloc + CompanyOffset] == 0xFF) && (!ROM[infoloc + BSYearOffset] || (ROM[infoloc + BSYearOffset] & 131) == 128) && valid_normal_bank(ROM[infoloc + BSBankOffset])) {
uint8_t m = ROM[infoloc + BSMonthOffset];
if (!m && !ROM[infoloc + BSDayOffset]) {
// BS Add-on cart
return;
}
if ((m == 0xFF && ROM[infoloc + BSDayOffset] == 0xFF) || (!(m & 0xF) && ((m >> 4) - 1 < 12))) {
BSEnable = true;
return;
}
}
}
// Checksum functions
uint16_t sum(uint8_t* array, size_t size)
{
uint16_t theSum = 0;
uint_fast32_t i;
// Prevent crashing by reading too far (needed for messed up ROMs)
if (array + size > romdata + maxromspace) {
return (0xFFFF);
}
for (i = 0; i < size; i++) {
theSum += array[i];
}
return (theSum);
}
static uint16_t Checksumvalue;
void CalcChecksum()
{
uint8_t* ROM = romdata;
if (SplittedROM) {
Checksumvalue = sum(ROM + addOnStart, addOnSize);
Checksumvalue -= sum(ROM + infoloc + addOnStart - 16, 48);
} else if (SPC7110Enable) {
Checksumvalue = sum(ROM, curromspace);
} else {
Checksumvalue = sum(ROM, curromspace);
if (NumofBanks > 128 && maxromspace == 6 * MB_bytes) {
Checksumvalue += sum(ROM + 4 * MB_bytes, 2 * MB_bytes);
}
if (BSEnable) {
Checksumvalue -= sum(&ROM[infoloc - 16], 48); // Fix for BS Dumps
}
}
}
static void rom_memcpy(uint8_t* dest, uint8_t* src, size_t len)
{
uint8_t* endrom = romdata + maxromspace;
while (len-- && (dest < endrom) && (src < endrom)) {
*dest++ = *src++;
}
}
// This will mirror up non power of two ROMs to powers of two
static uint32_t mirror_rom(uint8_t* start, size_t length)
{
uint32_t mask = 0x800000;
while (!(length & mask)) {
mask >>= 1;
}
length -= mask;
if (length) {
start += mask;
length = mirror_rom(start, length);
while (length != mask) {
rom_memcpy(start + length, start, length);
length += length;
}
}
return (length + mask);
}
// Misc functions
void MirrorROM(uint8_t* ROM)
{
uint32_t ROMSize, StartMirror = 0;
if (!SPC7110Enable) {
curromspace = mirror_rom(romdata, curromspace);
} else if (curromspace == 0x300000) {
memcpy(romdata + curromspace, romdata, curromspace);
curromspace += curromspace;
}
if (curromspace > maxromspace) { curromspace = maxromspace; }
NumofBanks = curromspace >> 15;
// This will mirror (now) full sized ROMs through the ROM buffer
ROMSize = curromspace;
while (ROMSize < maxromspace) {
ROM[ROMSize++] = ROM[StartMirror++];
}
// If ROM was too small before, but now decent size with mirroring, adjust location
if (infoloc < Lo) {
infoloc = Lo;
}
}
void SetupSramSize()
{
uint8_t* ROM = romdata;
if (BSEnable) {
ramsize = 0;
} else if (SFXEnable) {
if (ROM[infoloc + CompanyOffset] == 0x33) // Extended header
{
ramsize = 8 << ((uint32_t)ROM[infoloc - 3]);
} else {
ramsize = 256;
}
} else if (SETAEnable) {
ramsize = 32;
} else if (!strncmp((char*)ROM, "BANDAI SFC-ADX", 14)) { // For the Sufami Turbo
ramsize = 8 << ((uint32_t)ROM[0x100032]);
} else {
ramsize = ((ROM[infoloc + SRAMSizeOffset]) ? (8 << ((uint32_t)ROM[infoloc + SRAMSizeOffset])) : 0);
}
// Fix if some ROM goes nuts on size
if (ramsize > 1024) {
ramsize = 1024;
}
// Convert from Kb to bytes;
ramsize *= 128;
ramsizeand = ramsize - 1;
}
// File loading code
bool Header512;
char CSStatus[41], CSStatus2[41], CSStatus3[41], CSStatus4[41];
void DumpROMLoadInfo()
{
extern char *ZVERSION, *VERSION_DATE, *VERSION_PORT;
FILE* fp = 0;
if (RomInfo) // rominfo.txt info dumping enabled?
{
fp = fopen_dir(ZCfgPath, "rominfo.txt", "w");
if (!fp) {
return;
}
fprintf(fp, "This is the info for the last game you ran.\n\nZSNES v%s - %s - %s\n",
ZVERSION, VERSION_DATE, VERSION_PORT);
fputs("File: ", fp);
fputs(ZCartName, fp);
fputs(" Header: ", fp);
fputs(Header512 ? "Yes\n" : "No\n", fp);
fputs(CSStatus, fp);
fputs("\n", fp);
fputs(CSStatus2, fp);
fputs("\n", fp);
fputs(CSStatus3, fp);
fputs("\n", fp);
fputs(CSStatus4, fp);
fputs("\n", fp);
fclose(fp);
}
}
void loadFile(char* filename)
{
bool multifile = false;
char* incrementer = 0;
uint8_t* ROM = romdata;
if (strlen(filename) >= 3) // Char + ".1"
{
char* ext = filename + strlen(filename) - 2;
if (!strcmp(ext, ".1") || !strcasecmp(ext, ".A")) {
incrementer = ext + 1;
multifile = true;
}
}
for (;;) {
struct stat stat_results;
stat_dir(ZRomPath, filename, &stat_results);
if ((uint32_t)stat_results.st_size <= maxromspace + 512 - curromspace) {
FILE* fp = 0;
fp = fopen_dir(ZRomPath, filename, "rb");
if (!fp) {
return;
}
if (curromspace && ((stat_results.st_size & 0x7FFF) == 512)) {
stat_results.st_size -= 512;
fseek(fp, 512, SEEK_SET);
}
fread(ROM + curromspace, stat_results.st_size, 1, fp);
fclose(fp);
curromspace += stat_results.st_size;
if (!multifile) {
return;
}
(*incrementer)++;
} else {
return;
}
}
}
void loadGZipFile(char* filename)
{
// Open file for size reading
FILE* fp = fopen_dir(ZRomPath, filename, "rb");
if (fp) {
uint32_t fsize, gzsize;
gzFile GZipFile;
fseek(fp, -4, SEEK_END);
gzsize = fread4(fp);
fsize = ftell(fp);
rewind(fp);
// Open GZip file for decompression, use existing file handle
if ((GZipFile = gzdopen(fileno(fp), "rb"))) {
uint32_t len = gzdirect(GZipFile) ? fsize : gzsize;
if (len && (len <= maxromspace + 512) && ((uint32_t)gzread(GZipFile, romdata, len) == len)) {
curromspace = len; // Success
}
gzclose(GZipFile);
}
fclose(fp);
}
}
void loadZipFile(char* filename)
{
int err, fileSize;
uint8_t* ROM = romdata;
bool multifile = false, NSS = false;
char* incrementer = 0;
unzFile zipfile = unzopen_dir(ZRomPath, filename); // Open zip file
int cFile = unzGoToFirstFile(zipfile); // Set cFile to first compressed file
unz_file_info cFileInfo; // Create variable to hold info for a compressed file
int LargestGoodFile = 0; // To keep track of largest file
// Variables for the file we pick
char ourFile[256];
ourFile[0] = '\n';
while (cFile == UNZ_OK) // While not at end of compressed file list
{
// Temporary char array for file name
char cFileName[256];
// Gets info on current file, and places it in cFileInfo
unzGetCurrentFileInfo(zipfile, &cFileInfo, cFileName, 256, NULL, 0, NULL, 0);
// Get the file's size
fileSize = cFileInfo.uncompressed_size;
// Find split files
if (strlen(cFileName) >= 3) // Char + ".1"
{
char* ext = cFileName + strlen(cFileName) - 2;
if (!strcmp(ext, ".1") || !strcasecmp(ext, ".A")) {
strcpy(ourFile, cFileName);
incrementer = ourFile + strlen(ourFile) - 1;
multifile = true;
break;
}
}
// Find Nintendo Super System ROMs
if (strlen(cFileName) >= 5) // Char + ".IC2"
{
char* ext = cFileName + strlen(cFileName) - 4;
if (!strncasecmp(ext, ".IC", 3)) {
strcpy(ourFile, cFileName);
incrementer = ourFile + strlen(ourFile) - 1;
*incrementer = '7';
NSS = true;
break;
}
}
// Check for valid ROM based on size
if (((intmax_t)fileSize <= maxromspace + 512) && (fileSize > LargestGoodFile)) {
strcpy(ourFile, cFileName);
LargestGoodFile = fileSize;
}
// Go to next file in zip file
cFile = unzGoToNextFile(zipfile);
}
// No files found
if (ourFile[0] == '\n') {
unzClose(zipfile);
return;
}
for (;;) {
// Sets current file to the file we liked before
if (unzLocateFile(zipfile, ourFile, 1) != UNZ_OK) {
if (NSS) {
(*incrementer)--;
continue;
}
unzClose(zipfile);
return;
}
// Gets info on current file, and places it in cFileInfo
unzGetCurrentFileInfo(zipfile, &cFileInfo, ourFile, 256, NULL, 0, NULL, 0);
// Get the file's size
fileSize = cFileInfo.uncompressed_size;
// Too big?
if (curromspace + fileSize > maxromspace + 512) {
unzClose(zipfile);
return;
}
// Open file
unzOpenCurrentFile(zipfile);
// Read file into memory
err = unzReadCurrentFile(zipfile, ROM + curromspace, fileSize);
// Close file
unzCloseCurrentFile(zipfile);
// Encountered error?
if (err != fileSize) {
unzClose(zipfile);
return;
}
if (curromspace && ((fileSize & 0x7FFF) == 512)) {
fileSize -= 512;
memmove(ROM + curromspace, ROM + curromspace + 512, fileSize);
}
curromspace += fileSize;
if (NSS) {
if (!*incrementer) {
return;
}
(*incrementer)--;
continue;
}
if (!multifile) {
unzClose(zipfile);
return;
}
(*incrementer)++;
}
}
void load_file_fs(char* path)
{
uint8_t* ROM = romdata;
if (isextension(path, "jma")) {
#ifdef NO_JMA
puts("This binary was built without JMA support.");
#else
load_jma_file_dir(ZRomPath, path);
#endif
}
if (isextension(path, "zip")) {
loadZipFile(path);
}
if (isextension(path, "gz")) {
loadGZipFile(path);
} else {
loadFile(path);
}
if ((curromspace & 0x7FFF) == 512) {
memmove(ROM, ROM + 512, addOnStart);
curromspace -= 512;