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/*
Copyright (C) 2006 Normmatt
Copyright (C) 2006 Theo Berkau
Copyright (C) 2007 Pascal Giard
Copyright (C) 2008-2012 DeSmuME team
This file 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 file 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 the this software. If not, see <http://www.gnu.org/licenses/>.
*/
//MUST SAVE ADDONS! OMG HOW DID WE FORGET THAT
#ifdef HAVE_LIBZ
#include <zlib.h>
#endif
#include <stack>
#include <set>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include <fstream>
#include "saves.h"
#include "MMU.h"
#include "NDSSystem.h"
#include "render3D.h"
#include "cp15.h"
#include "GPU_osd.h"
#include "version.h"
#include "readwrite.h"
#include "gfx3d.h"
#include "movie.h"
#include "mic.h"
#include "MMU_timing.h"
#include "path.h"
#ifdef _WINDOWS
#include "windows/main.h"
#endif
int lastSaveState = 0; //Keeps track of last savestate used for quick save/load functions
//void*v is actually a void** which will be indirected before reading
//since this isnt supported right now, it is declared in here to make things compile
#define SS_INDIRECT 0x80000000
savestates_t savestates[NB_STATES];
#define SAVESTATE_VERSION 12
static const char* magic = "DeSmuME SState\0";
//a savestate chunk loader can set this if it wants to permit a silent failure (for compatibility)
static bool SAV_silent_fail_flag;
SFORMAT SF_NDS_HEADER[]={
{ "GINF", 1, sizeof(gameInfo.header), &gameInfo.header},
{ "GRSZ", 1, 4, &gameInfo.romsize},
{ 0 }
};
SFORMAT SF_ARM7[]={
{ "7INS", 4, 1, &NDS_ARM7.instruction },
{ "7INA", 4, 1, &NDS_ARM7.instruct_adr },
{ "7INN", 4, 1, &NDS_ARM7.next_instruction },
{ "7REG", 4,16, NDS_ARM7.R },
{ "7CPS", 4, 1, &NDS_ARM7.CPSR },
{ "7SPS", 4, 1, &NDS_ARM7.SPSR },
{ "7DUS", 4, 1, &NDS_ARM7.R13_usr },
{ "7EUS", 4, 1, &NDS_ARM7.R14_usr },
{ "7DSV", 4, 1, &NDS_ARM7.R13_svc },
{ "7ESV", 4, 1, &NDS_ARM7.R14_svc },
{ "7DAB", 4, 1, &NDS_ARM7.R13_abt },
{ "7EAB", 4, 1, &NDS_ARM7.R14_abt },
{ "7DUN", 4, 1, &NDS_ARM7.R13_und },
{ "7EUN", 4, 1, &NDS_ARM7.R14_und },
{ "7DIR", 4, 1, &NDS_ARM7.R13_irq },
{ "7EIR", 4, 1, &NDS_ARM7.R14_irq },
{ "78FI", 4, 1, &NDS_ARM7.R8_fiq },
{ "79FI", 4, 1, &NDS_ARM7.R9_fiq },
{ "7AFI", 4, 1, &NDS_ARM7.R10_fiq },
{ "7BFI", 4, 1, &NDS_ARM7.R11_fiq },
{ "7CFI", 4, 1, &NDS_ARM7.R12_fiq },
{ "7DFI", 4, 1, &NDS_ARM7.R13_fiq },
{ "7EFI", 4, 1, &NDS_ARM7.R14_fiq },
{ "7SVC", 4, 1, &NDS_ARM7.SPSR_svc },
{ "7ABT", 4, 1, &NDS_ARM7.SPSR_abt },
{ "7UND", 4, 1, &NDS_ARM7.SPSR_und },
{ "7IRQ", 4, 1, &NDS_ARM7.SPSR_irq },
{ "7FIQ", 4, 1, &NDS_ARM7.SPSR_fiq },
{ "7int", 4, 1, &NDS_ARM7.intVector },
{ "7LDT", 1, 1, &NDS_ARM7.LDTBit },
{ "7Wai", 4, 1, &NDS_ARM7.waitIRQ },
{ "7hef", 4, 1, &NDS_ARM7.halt_IE_and_IF },
{ "7iws", 1, 1, &NDS_ARM7.intrWaitARM_state },
{ 0 }
};
SFORMAT SF_ARM9[]={
{ "9INS", 4, 1, &NDS_ARM9.instruction},
{ "9INA", 4, 1, &NDS_ARM9.instruct_adr},
{ "9INN", 4, 1, &NDS_ARM9.next_instruction},
{ "9REG", 4,16, NDS_ARM9.R},
{ "9CPS", 4, 1, &NDS_ARM9.CPSR},
{ "9SPS", 4, 1, &NDS_ARM9.SPSR},
{ "9DUS", 4, 1, &NDS_ARM9.R13_usr},
{ "9EUS", 4, 1, &NDS_ARM9.R14_usr},
{ "9DSV", 4, 1, &NDS_ARM9.R13_svc},
{ "9ESV", 4, 1, &NDS_ARM9.R14_svc},
{ "9DAB", 4, 1, &NDS_ARM9.R13_abt},
{ "9EAB", 4, 1, &NDS_ARM9.R14_abt},
{ "9DUN", 4, 1, &NDS_ARM9.R13_und},
{ "9EUN", 4, 1, &NDS_ARM9.R14_und},
{ "9DIR", 4, 1, &NDS_ARM9.R13_irq},
{ "9EIR", 4, 1, &NDS_ARM9.R14_irq},
{ "98FI", 4, 1, &NDS_ARM9.R8_fiq},
{ "99FI", 4, 1, &NDS_ARM9.R9_fiq},
{ "9AFI", 4, 1, &NDS_ARM9.R10_fiq},
{ "9BFI", 4, 1, &NDS_ARM9.R11_fiq},
{ "9CFI", 4, 1, &NDS_ARM9.R12_fiq},
{ "9DFI", 4, 1, &NDS_ARM9.R13_fiq},
{ "9EFI", 4, 1, &NDS_ARM9.R14_fiq},
{ "9SVC", 4, 1, &NDS_ARM9.SPSR_svc},
{ "9ABT", 4, 1, &NDS_ARM9.SPSR_abt},
{ "9UND", 4, 1, &NDS_ARM9.SPSR_und},
{ "9IRQ", 4, 1, &NDS_ARM9.SPSR_irq},
{ "9FIQ", 4, 1, &NDS_ARM9.SPSR_fiq},
{ "9int", 4, 1, &NDS_ARM9.intVector},
{ "9LDT", 1, 1, &NDS_ARM9.LDTBit},
{ "9Wai", 4, 1, &NDS_ARM9.waitIRQ},
{ "9hef", 4, 1, &NDS_ARM9.halt_IE_and_IF },
{ "9iws", 1, 1, &NDS_ARM9.intrWaitARM_state },
{ 0 }
};
SFORMAT SF_MEM[]={
{ "ITCM", 1, sizeof(MMU.ARM9_ITCM), MMU.ARM9_ITCM},
{ "DTCM", 1, sizeof(MMU.ARM9_DTCM), MMU.ARM9_DTCM},
//for legacy purposes, WRAX is a separate variable. shouldnt be a problem.
{ "WRAM", 1, 0x400000, MMU.MAIN_MEM},
{ "WRAX", 1, 0x400000, MMU.MAIN_MEM+0x400000},
//NOTE - this is not as large as the allocated memory.
//the memory is overlarge due to the way our memory map system is setup
//but there are actually no more registers than this
{ "9REG", 1, 0x2000, MMU.ARM9_REG},
{ "VMEM", 1, sizeof(MMU.ARM9_VMEM), MMU.ARM9_VMEM},
{ "OAMS", 1, sizeof(MMU.ARM9_OAM), MMU.ARM9_OAM},
//this size is specially chosen to avoid saving the blank space at the end
{ "LCDM", 1, 0xA4000, MMU.ARM9_LCD},
{ 0 }
};
SFORMAT SF_NDS[]={
{ "_WCY", 4, 1, &nds.wifiCycle},
{ "_TCY", 8, 8, nds.timerCycle},
{ "_VCT", 4, 1, &nds.VCount},
{ "_OLD", 4, 1, &nds.old},
{ "_TPX", 2, 1, &nds.adc_touchX},
{ "_TPY", 2, 1, &nds.adc_touchY},
{ "_TPC", 2, 1, &nds.adc_jitterctr},
{ "_STX", 2, 1, &nds.scr_touchX},
{ "_STY", 2, 1, &nds.scr_touchY},
{ "_TPB", 4, 1, &nds.isTouch},
{ "_DBG", 4, 1, &nds._DebugConsole},
{ "_ENS", 4, 1, &nds.ensataEmulation},
{ "_TYP", 4, 1, &nds.ConsoleType},
{ "_ENH", 4, 1, &nds.ensataHandshake},
{ "_ENI", 4, 1, &nds.ensataIpcSyncCounter},
{ "_SLP", 4, 1, &nds.sleeping},
{ "_FBS", 4, 1, &nds.freezeBus},
{ "_CEJ", 4, 1, &nds.cardEjected},
{ "_PDL", 2, 1, &nds.paddle},
{ "_P00", 1, 1, &nds.power1.lcd},
{ "_P01", 1, 1, &nds.power1.gpuMain},
{ "_P02", 1, 1, &nds.power1.gfx3d_render},
{ "_P03", 1, 1, &nds.power1.gfx3d_geometry},
{ "_P04", 1, 1, &nds.power1.gpuSub},
{ "_P05", 1, 1, &nds.power1.dispswap},
{ "_P06", 1, 1, &nds.power2.speakers},
{ "_P07", 1, 1, &nds.power2.wifi},
{ 0 }
};
SFORMAT SF_MMU[]={
{ "M7BI", 1, sizeof(MMU.ARM7_BIOS), MMU.ARM7_BIOS},
{ "M7ER", 1, sizeof(MMU.ARM7_ERAM), MMU.ARM7_ERAM},
{ "M7RG", 1, sizeof(MMU.ARM7_REG), MMU.ARM7_REG},
{ "M7WI", 1, sizeof(MMU.ARM7_WIRAM), MMU.ARM7_WIRAM},
{ "MSWI", 1, sizeof(MMU.SWIRAM), MMU.SWIRAM},
{ "M9RW", 1, 1, &MMU.ARM9_RW_MODE},
{ "MDTC", 4, 1, &MMU.DTCMRegion},
{ "MITC", 4, 1, &MMU.ITCMRegion},
{ "MTIM", 2, 8, MMU.timer},
{ "MTMO", 4, 8, MMU.timerMODE},
{ "MTON", 4, 8, MMU.timerON},
{ "MTRN", 4, 8, MMU.timerRUN},
{ "MTRL", 2, 8, MMU.timerReload},
{ "MIME", 4, 2, MMU.reg_IME},
{ "MIE_", 4, 2, MMU.reg_IE},
{ "MIF_", 4, 2, MMU.reg_IF_bits},
{ "MIFP", 4, 2, MMU.reg_IF_pending},
{ "MGXC", 8, 1, &MMU.gfx3dCycles},
{ "M_SX", 1, 2, &MMU.SPI_CNT},
{ "M_SC", 1, 2, &MMU.SPI_CMD},
{ "MASX", 1, 2, &MMU.AUX_SPI_CNT},
{ "MASC", 1, 2, &MMU.AUX_SPI_CMD},
{ "MWRA", 1, 2, &MMU.WRAMCNT},
{ "MDV1", 4, 1, &MMU.divRunning},
{ "MDV2", 8, 1, &MMU.divResult},
{ "MDV3", 8, 1, &MMU.divMod},
{ "MDV5", 8, 1, &MMU.divCycles},
{ "MSQ1", 4, 1, &MMU.sqrtRunning},
{ "MSQ2", 4, 1, &MMU.sqrtResult},
{ "MSQ4", 8, 1, &MMU.sqrtCycles},
//begin memory chips
{ "BUCO", 1, 1, &MMU.fw.com},
{ "BUAD", 4, 1, &MMU.fw.addr},
{ "BUAS", 1, 1, &MMU.fw.addr_shift},
{ "BUAZ", 1, 1, &MMU.fw.addr_size},
{ "BUWE", 4, 1, &MMU.fw.write_enable},
{ "BUWR", 4, 1, &MMU.fw.writeable_buffer},
//end memory chips
{ "MC0A", 4, 1, &MMU.dscard[0].address},
{ "MC0T", 4, 1, &MMU.dscard[0].transfer_count},
{ "MC1A", 4, 1, &MMU.dscard[1].address},
{ "MC1T", 4, 1, &MMU.dscard[1].transfer_count},
//{ "MCHT", 4, 1, &MMU.CheckTimers},
//{ "MCHD", 4, 1, &MMU.CheckDMAs},
//fifos
{ "F0TH", 1, 1, &ipc_fifo[0].head},
{ "F0TL", 1, 1, &ipc_fifo[0].tail},
{ "F0SZ", 1, 1, &ipc_fifo[0].size},
{ "F0BF", 4, 16, ipc_fifo[0].buf},
{ "F1TH", 1, 1, &ipc_fifo[1].head},
{ "F1TL", 1, 1, &ipc_fifo[1].tail},
{ "F1SZ", 1, 1, &ipc_fifo[1].size},
{ "F1BF", 4, 16, ipc_fifo[1].buf},
{ "FDHD", 4, 1, &disp_fifo.head},
{ "FDTL", 4, 1, &disp_fifo.tail},
{ "FDBF", 4, 0x6000, disp_fifo.buf},
{ "PMCN", 1, 1, &MMU.powerMan_CntReg},
{ "PMCW", 4, 1, &MMU.powerMan_CntRegWritten},
{ "PMCR", 1, 5, &MMU.powerMan_Reg},
{ "MR3D", 4, 1, &MMU.reg_DISP3DCNT_bits},
{ 0 }
};
SFORMAT SF_MOVIE[]={
{ "FRAC", 4, 1, &currFrameCounter},
{ "LAGC", 4, 1, &TotalLagFrames},
{ 0 }
};
extern SFORMAT SF_RTC[];
static u8 reserveVal = 0;
SFORMAT reserveChunks[] = {
{ "RESV", 1, 1, &reserveVal},
{ 0 }
};
static void mmu_savestate(EMUFILE* os)
{
u32 version = 8;
write32le(version,os);
//version 2:
MMU_new.backupDevice.save_state(os);
//version 3:
MMU_new.gxstat.savestate(os);
for(int i=0;i<2;i++)
for(int j=0;j<4;j++)
MMU_new.dma[i][j].savestate(os);
MMU_timing.arm9codeFetch.savestate(os, version);
MMU_timing.arm9dataFetch.savestate(os, version);
MMU_timing.arm7codeFetch.savestate(os, version);
MMU_timing.arm7dataFetch.savestate(os, version);
MMU_timing.arm9codeCache.savestate(os, version);
MMU_timing.arm9dataCache.savestate(os, version);
//version 4:
MMU_new.sqrt.savestate(os);
MMU_new.div.savestate(os);
//version 6:
MMU_new.dsi_tsc.save_state(os);
//version 8:
os->write32le(MMU.fw.size);
os->fwrite(MMU.fw.data,MMU.fw.size);
}
// TODO: integrate the new wifi state variables once everything is settled
SFORMAT SF_WIFI[]={
{ "W000", 4, 1, &wifiMac.powerOn},
{ "W010", 4, 1, &wifiMac.powerOnPending},
{ "W020", 2, 1, &wifiMac.rfStatus},
{ "W030", 2, 1, &wifiMac.rfPins},
{ "W040", 2, 1, &wifiMac.IE},
{ "W050", 2, 1, &wifiMac.IF},
{ "W060", 2, 1, &wifiMac.macMode},
{ "W070", 2, 1, &wifiMac.wepMode},
{ "W080", 4, 1, &wifiMac.WEP_enable},
{ "W100", 2, 1, &wifiMac.TXCnt},
{ "W120", 2, 1, &wifiMac.TXStat},
{ "W200", 2, 1, &wifiMac.RXCnt},
{ "W210", 2, 1, &wifiMac.RXCheckCounter},
{ "W220", 1, 6, &wifiMac.mac.bytes},
{ "W230", 1, 6, &wifiMac.bss.bytes},
{ "W240", 2, 1, &wifiMac.aid},
{ "W250", 2, 1, &wifiMac.pid},
{ "W260", 2, 1, &wifiMac.retryLimit},
{ "W270", 4, 1, &wifiMac.crystalEnabled},
{ "W280", 8, 1, &wifiMac.usec},
{ "W290", 4, 1, &wifiMac.usecEnable},
{ "W300", 8, 1, &wifiMac.ucmp},
{ "W310", 4, 1, &wifiMac.ucmpEnable},
{ "W320", 2, 1, &wifiMac.eCount},
{ "W330", 4, 1, &wifiMac.eCountEnable},
{ "WR00", 4, 1, &wifiMac.RF.CFG1.val},
{ "WR01", 4, 1, &wifiMac.RF.IFPLL1.val},
{ "WR02", 4, 1, &wifiMac.RF.IFPLL2.val},
{ "WR03", 4, 1, &wifiMac.RF.IFPLL3.val},
{ "WR04", 4, 1, &wifiMac.RF.RFPLL1.val},
{ "WR05", 4, 1, &wifiMac.RF.RFPLL2.val},
{ "WR06", 4, 1, &wifiMac.RF.RFPLL3.val},
{ "WR07", 4, 1, &wifiMac.RF.RFPLL4.val},
{ "WR08", 4, 1, &wifiMac.RF.CAL1.val},
{ "WR09", 4, 1, &wifiMac.RF.TXRX1.val},
{ "WR10", 4, 1, &wifiMac.RF.PCNT1.val},
{ "WR11", 4, 1, &wifiMac.RF.PCNT2.val},
{ "WR12", 4, 1, &wifiMac.RF.VCOT1.val},
{ "W340", 1, 105, &wifiMac.BB.data[0]},
{ "W350", 2, 1, &wifiMac.rfIOCnt.val},
{ "W360", 2, 1, &wifiMac.rfIOStatus.val},
{ "W370", 4, 1, &wifiMac.rfIOData.val},
{ "W380", 2, 1, &wifiMac.bbIOCnt.val},
{ "W400", 2, 0x1000, &wifiMac.RAM[0]},
{ "W410", 2, 1, &wifiMac.RXRangeBegin},
{ "W420", 2, 1, &wifiMac.RXRangeEnd},
{ "W430", 2, 1, &wifiMac.RXWriteCursor},
{ "W460", 2, 1, &wifiMac.RXReadCursor},
{ "W470", 2, 1, &wifiMac.RXUnits},
{ "W480", 2, 1, &wifiMac.RXBufCount},
{ "W490", 2, 1, &wifiMac.CircBufReadAddress},
{ "W500", 2, 1, &wifiMac.CircBufWriteAddress},
{ "W510", 2, 1, &wifiMac.CircBufRdEnd},
{ "W520", 2, 1, &wifiMac.CircBufRdSkip},
{ "W530", 2, 1, &wifiMac.CircBufWrEnd},
{ "W540", 2, 1, &wifiMac.CircBufWrSkip},
{ "W580", 2, 0x800, &wifiMac.IOPorts[0]},
{ "W590", 2, 1, &wifiMac.randomSeed},
{ 0 }
};
static bool mmu_loadstate(EMUFILE* is, int size)
{
//read version
u32 version;
if(read32le(&version,is) != 1) return false;
if(version == 0 || version == 1)
{
u32 bupmem_size;
u32 addr_size;
if(version == 0)
{
//version 0 was buggy and didnt save the type.
//it would silently fail if there was a size mismatch
SAV_silent_fail_flag = true;
if(read32le(&bupmem_size,is) != 1) return false;
//if(bupmem_size != MMU.bupmem.size) return false; //mismatch between current initialized and saved size
addr_size = BackupDevice::addr_size_for_old_save_size(bupmem_size);
}
else if(version == 1)
{
//version 1 reinitializes the save system with the type that was saved
u32 bupmem_type;
if(read32le(&bupmem_type,is) != 1) return false;
if(read32le(&bupmem_size,is) != 1) return false;
addr_size = BackupDevice::addr_size_for_old_save_type(bupmem_type);
if(addr_size == 0xFFFFFFFF)
addr_size = BackupDevice::addr_size_for_old_save_size(bupmem_size);
}
if(addr_size == 0xFFFFFFFF)
return false;
u8* temp = new u8[bupmem_size];
is->fread((char*)temp,bupmem_size);
MMU_new.backupDevice.load_old_state(addr_size,temp,bupmem_size);
delete[] temp;
if(is->fail()) return false;
}
if(version < 2) return true;
bool ok = MMU_new.backupDevice.load_state(is);
if(version < 3) return ok;
ok &= MMU_new.gxstat.loadstate(is);
for(int i=0;i<2;i++)
for(int j=0;j<4;j++)
ok &= MMU_new.dma[i][j].loadstate(is);
ok &= MMU_timing.arm9codeFetch.loadstate(is, version);
ok &= MMU_timing.arm9dataFetch.loadstate(is, version);
ok &= MMU_timing.arm7codeFetch.loadstate(is, version);
ok &= MMU_timing.arm7dataFetch.loadstate(is, version);
ok &= MMU_timing.arm9codeCache.loadstate(is, version);
ok &= MMU_timing.arm9dataCache.loadstate(is, version);
if(version < 4) return ok;
ok &= MMU_new.sqrt.loadstate(is,version);
ok &= MMU_new.div.loadstate(is,version);
//to prevent old savestates from confusing IF bits, mask out ones which had been stored but should have been generated
MMU.reg_IF_bits[0] &= ~0x00200000;
MMU.reg_IF_bits[1] &= ~0x00000000;
MMU_new.gxstat.fifo_low = gxFIFO.size <= 127;
MMU_new.gxstat.fifo_empty = gxFIFO.size == 0;
if(version < 5)
MMU.reg_DISP3DCNT_bits = T1ReadWord(MMU.ARM9_REG,0x60);
if(version < 6) return ok;
MMU_new.dsi_tsc.load_state(is);
//version 6
if(version < 7)
{
//recover WRAMCNT from the stashed WRAMSTAT memory location
MMU.WRAMCNT = MMU.MMU_MEM[ARMCPU_ARM7][0x40][0x241];
}
if(version<8) return ok;
//version 8:
delete[] MMU.fw.data;
MMU.fw.size = is->read32le();
MMU.fw.data = new u8[size];
is->fread(MMU.fw.data,MMU.fw.size);
return ok;
}
static void cp15_savestate(EMUFILE* os)
{
//version
write32le(1,os);
cp15.saveone(os);
//ARM7 not have coprocessor
//cp15_saveone((armcp15_t *)NDS_ARM7.coproc[15],os);
}
static bool cp15_loadstate(EMUFILE* is, int size)
{
//read version
u32 version;
if(read32le(&version,is) != 1) return false;
if(version > 1) return false;
if(!cp15.loadone(is)) return false;
if(version == 0)
{
//ARM7 not have coprocessor
u8 *tmp_buf = new u8 [sizeof(armcp15_t)];
if (!tmp_buf) return false;
if(!cp15.loadone(is)) return false;
delete [] tmp_buf;
tmp_buf = NULL;
}
return true;
}
/* Format time and convert to string */
static char * format_time(time_t cal_time)
{
struct tm *time_struct;
static char str[64];
time_struct=localtime(&cal_time);
strftime(str, sizeof str, "%d-%b-%Y %H:%M:%S", time_struct);
return(str);
}
void clear_savestates()
{
u8 i;
for( i = 0; i < NB_STATES; i++ )
savestates[i].exists = FALSE;
}
// Scan for existing savestates and update struct
void scan_savestates()
{
struct stat sbuf;
char filename[MAX_PATH+1];
clear_savestates();
for(int i = 0; i < NB_STATES; i++ )
{
path.getpathnoext(path.STATES, filename);
if (strlen(filename) + strlen(".dst") + strlen("-2147483648") /* = biggest string for i */ >MAX_PATH) return ;
sprintf(filename+strlen(filename), ".ds%d", i);
if( stat(filename,&sbuf) == -1 ) continue;
savestates[i].exists = TRUE;
strncpy(savestates[i].date, format_time(sbuf.st_mtime),40);
savestates[i].date[40-1] = '\0';
}
return ;
}
void savestate_slot(int num)
{
struct stat sbuf;
char filename[MAX_PATH+1];
lastSaveState = num; //Set last savestate used
path.getpathnoext(path.STATES, filename);
if (strlen(filename) + strlen(".dsx") + strlen("-2147483648") /* = biggest string for num */ >MAX_PATH) return ;
sprintf(filename+strlen(filename), ".ds%d", num);
if (savestate_save(filename))
{
osd->setLineColor(255, 255, 255);
osd->addLine("Saved to %i slot", num);
}
else
{
osd->setLineColor(255, 0, 0);
osd->addLine("Error saving %i slot", num);
return;
}
if (num >= 0 && num < NB_STATES)
{
if (stat(filename,&sbuf) != -1)
{
savestates[num].exists = TRUE;
strncpy(savestates[num].date, format_time(sbuf.st_mtime),40);
savestates[num].date[40-1] = '\0';
}
}
}
void loadstate_slot(int num)
{
char filename[MAX_PATH];
lastSaveState = num; //Set last savestate used
path.getpathnoext(path.STATES, filename);
if (strlen(filename) + strlen(".dsx") + strlen("-2147483648") /* = biggest string for num */ >MAX_PATH) return ;
sprintf(filename+strlen(filename), ".ds%d", num);
if (savestate_load(filename))
{
osd->setLineColor(255, 255, 255);
osd->addLine("Loaded from %i slot", num);
}
else
{
osd->setLineColor(255, 0, 0);
osd->addLine("Error loading %i slot", num);
}
}
// note: guessSF is so we don't have to do a linear search through the SFORMAT array every time
// in the (most common) case that we already know where the next entry is.
static const SFORMAT *CheckS(const SFORMAT *guessSF, const SFORMAT *firstSF, u32 size, u32 count, char *desc)
{
const SFORMAT *sf = guessSF ? guessSF : firstSF;
while(sf->v)
{
//NOT SUPPORTED RIGHT NOW
//if(sf->size==~0) // Link to another SFORMAT structure.
//{
// SFORMAT *tmp;
// if((tmp= CheckS((SFORMAT *)sf->v, tsize, desc) ))
// return(tmp);
// sf++;
// continue;
//}
if(!memcmp(desc,sf->desc,4))
{
if(sf->size != size || sf->count != count)
return 0;
return sf;
}
// failed to find it, have to keep iterating
if(guessSF)
{
sf = firstSF;
guessSF = NULL;
}
else
{
sf++;
}
}
return 0;
}
static bool ReadStateChunk(EMUFILE* is, const SFORMAT *sf, int size)
{
const SFORMAT *tmp = NULL;
const SFORMAT *guessSF = NULL;
int temp = is->ftell();
while(is->ftell()<temp+size)
{
u32 sz, count;
char toa[4];
is->fread(toa,4);
if(is->fail())
return false;
if(!read32le(&sz,is)) return false;
if(!read32le(&count,is)) return false;
if((tmp=CheckS(guessSF,sf,sz,count,toa)))
{
#ifdef LOCAL_LE
// no need to ever loop one at a time if not flipping byte order
is->fread((char *)tmp->v,sz*count);
#else
if(sz == 1) {
//special case: read a huge byte array
is->fread((char *)tmp->v,count);
} else {
for(unsigned int i=0;i<count;i++)
{
is->fread((char *)tmp->v + i*sz,sz);
FlipByteOrder((u8*)tmp->v + i*sz,sz);
}
}
#endif
guessSF = tmp + 1;
}
else
{
is->fseek(sz*count,SEEK_CUR);
guessSF = NULL;
}
} // while(...)
return true;
}
static int SubWrite(EMUFILE* os, const SFORMAT *sf)
{
uint32 acc=0;
#ifdef DEBUG
std::set<std::string> keyset;
#endif
const SFORMAT* temp = sf;
while(temp->v) {
const SFORMAT* seek = sf;
while(seek->v && seek != temp) {
if(!strcmp(seek->desc,temp->desc)) {
printf("ERROR! duplicated chunk name: %s\n", temp->desc);
}
seek++;
}
temp++;
}
while(sf->v)
{
//not supported right now
//if(sf->size==~0) //Link to another struct
//{
// uint32 tmp;
// if(!(tmp=SubWrite(os,(SFORMAT *)sf->v)))
// return(0);
// acc+=tmp;
// sf++;
// continue;
//}
int count = sf->count;
int size = sf->size;
//add size of current node to the accumulator
acc += 4 + sizeof(sf->size) + sizeof(sf->count);
acc += count * size;
if(os) //Are we writing or calculating the size of this block?
{
os->fwrite(sf->desc,4);
write32le(sf->size,os);
write32le(sf->count,os);
#ifdef DEBUG
//make sure we dont dup any keys
if(keyset.find(sf->desc) != keyset.end())
{
printf("duplicate save key!\n");
assert(false);
}
keyset.insert(sf->desc);
#endif
#ifdef LOCAL_LE
// no need to ever loop one at a time if not flipping byte order
os->fwrite((char *)sf->v,size*count);
#else
if(size == 1) {
//special case: write a huge byte array
os->fwrite((char *)sf->v,count);
} else {
for(int i=0;i<count;i++) {
FlipByteOrder((u8*)sf->v + i*size, size);
os->fwrite((char*)sf->v + i*size,size);
//Now restore the original byte order.
FlipByteOrder((u8*)sf->v + i*size, size);
}
}
#endif
}
sf++;
}
return(acc);
}
static int savestate_WriteChunk(EMUFILE* os, int type, const SFORMAT *sf)
{
write32le(type,os);
if(!sf) return 4;
int bsize = SubWrite((EMUFILE*)0,sf);
write32le(bsize,os);
if(!SubWrite(os,sf))
{
return 8;
}
return (bsize+8);
}
static void savestate_WriteChunk(EMUFILE* os, int type, void (*saveproc)(EMUFILE* os))
{
u32 pos1 = os->ftell();
//write the type, size(placeholder), and data
write32le(type,os);
os->fseek(4, SEEK_CUR); // skip the size, we write that later
saveproc(os);
//get the size
u32 pos2 = os->ftell();
assert(pos2 != (u32)-1); // if this assert fails, saveproc did something bad
u32 size = (pos2 - pos1) - (2 * sizeof(u32));
//fill in the actual size
os->fseek(pos1 + sizeof(u32),SEEK_SET);
write32le(size,os);
os->fseek(pos2,SEEK_SET);
/*
// old version of this function,
// for reference in case the new one above starts misbehaving somehow:
// - this is retarded. why not write placeholders for size and then write directly to the stream
//and then go back and fill them in
//get the size
memorystream mstemp;
saveproc(&mstemp);
mstemp.flush();
u32 size = mstemp.size();
//write the type, size, and data
write32le(type,os);
write32le(size,os);
os->write(mstemp.buf(),size);
*/
}
static void writechunks(EMUFILE* os);
bool savestate_save(EMUFILE* outstream, int compressionLevel)
{
#ifdef HAVE_JIT
arm_jit_sync();
#endif
#ifndef HAVE_LIBZ
compressionLevel = Z_NO_COMPRESSION;
#endif
EMUFILE_MEMORY ms;
EMUFILE* os;
if(compressionLevel != Z_NO_COMPRESSION)
{
//generate the savestate in memory first
os = (EMUFILE*)&ms;
writechunks(os);
}
else
{
os = outstream;
os->fseek(32,SEEK_SET); //skip the header
writechunks(os);
}
//save the length of the file
u32 len = os->ftell();
u32 comprlen = 0xFFFFFFFF;
u8* cbuf;
//compress the data
int error = Z_OK;
if(compressionLevel != Z_NO_COMPRESSION)
{
cbuf = ms.buf();
uLongf comprlen2;
//worst case compression.
//zlib says "0.1% larger than sourceLen plus 12 bytes"
comprlen = (len>>9)+12 + len;
cbuf = new u8[comprlen];
// Workaround to make it compile under linux 64bit
comprlen2 = comprlen;
error = compress2(cbuf,&comprlen2,ms.buf(),len,compressionLevel);
comprlen = (u32)comprlen2;
}
//dump the header
outstream->fseek(0,SEEK_SET);
outstream->fwrite(magic,16);
write32le(SAVESTATE_VERSION,outstream);
write32le(EMU_DESMUME_VERSION_NUMERIC(),outstream); //desmume version
write32le(len,outstream); //uncompressed length
write32le(comprlen,outstream); //compressed length (-1 if it is not compressed)
if(compressionLevel != Z_NO_COMPRESSION)
{
outstream->fwrite((char*)cbuf,comprlen==(u32)-1?len:comprlen);
delete[] cbuf;
}
return error == Z_OK;
}
bool savestate_save (const char *file_name)
{
EMUFILE_MEMORY ms;
size_t elems_written;
#ifdef HAVE_LIBZ
if(!savestate_save(&ms, Z_DEFAULT_COMPRESSION))
#else
if(!savestate_save(&ms, 0))
#endif
return false;
FILE* file = fopen(file_name,"wb");
if(file)
{
elems_written = fwrite(ms.buf(),1,ms.size(),file);
fclose(file);
return (elems_written == ms.size());
} else return false;
}
static void writechunks(EMUFILE* os) {
savestate_WriteChunk(os,1,SF_ARM9);
savestate_WriteChunk(os,2,SF_ARM7);
savestate_WriteChunk(os,3,cp15_savestate);
savestate_WriteChunk(os,4,SF_MEM);
savestate_WriteChunk(os,5,SF_NDS);
savestate_WriteChunk(os,51,nds_savestate);
savestate_WriteChunk(os,60,SF_MMU);
savestate_WriteChunk(os,61,mmu_savestate);
savestate_WriteChunk(os,7,gpu_savestate);
savestate_WriteChunk(os,8,spu_savestate);
savestate_WriteChunk(os,81,mic_savestate);
savestate_WriteChunk(os,90,SF_GFX3D);
savestate_WriteChunk(os,91,gfx3d_savestate);
savestate_WriteChunk(os,100,SF_MOVIE);
savestate_WriteChunk(os,101,mov_savestate);
savestate_WriteChunk(os,110,SF_WIFI);
savestate_WriteChunk(os,120,SF_RTC);
savestate_WriteChunk(os,130,SF_NDS_HEADER);
// reserved for future versions
savestate_WriteChunk(os,140,reserveChunks);
savestate_WriteChunk(os,150,reserveChunks);
savestate_WriteChunk(os,160,reserveChunks);
savestate_WriteChunk(os,170,reserveChunks);
savestate_WriteChunk(os,180,reserveChunks);
// ============================
savestate_WriteChunk(os,0xFFFFFFFF,(SFORMAT*)0);
}
static bool ReadStateChunks(EMUFILE* is, s32 totalsize)
{
bool ret = true;
bool haveInfo = false;
u32 romsize = 0;
NDS_header header;
SFORMAT SF_HEADER[]={
{ "GINF", 1, sizeof(header), &header},
{ "GRSZ", 1, 4, &romsize},
{ 0 }
};
memset(&header, 0, sizeof(header));
while(totalsize > 0)
{
u32 size;
u32 t;
if(!read32le(&t,is)) { ret=false; break; }
if(t == 0xFFFFFFFF) break;
if(!read32le(&size,is)) { ret=false; break; }
switch(t)
{
case 1: if(!ReadStateChunk(is,SF_ARM9,size)) ret=false; break;
case 2: if(!ReadStateChunk(is,SF_ARM7,size)) ret=false; break;
case 3: if(!cp15_loadstate(is,size)) ret=false; break;
case 4: if(!ReadStateChunk(is,SF_MEM,size)) ret=false; break;
case 5: if(!ReadStateChunk(is,SF_NDS,size)) ret=false; break;
case 51: if(!nds_loadstate(is,size)) ret=false; break;
case 60: if(!ReadStateChunk(is,SF_MMU,size)) ret=false; break;
case 61: if(!mmu_loadstate(is,size)) ret=false; break;
case 7: if(!gpu_loadstate(is,size)) ret=false; break;
case 8: if(!spu_loadstate(is,size)) ret=false; break;
case 81: if(!mic_loadstate(is,size)) ret=false; break;
case 90: if(!ReadStateChunk(is,SF_GFX3D,size)) ret=false; break;
case 91: if(!gfx3d_loadstate(is,size)) ret=false; break;
case 100: if(!ReadStateChunk(is,SF_MOVIE, size)) ret=false; break;
case 101: if(!mov_loadstate(is, size)) ret=false; break;
case 110: if(!ReadStateChunk(is,SF_WIFI,size)) ret=false; break;
case 120: if(!ReadStateChunk(is,SF_RTC,size)) ret=false; break;
case 130: if(!ReadStateChunk(is,SF_HEADER,size)) ret=false; else haveInfo=true; break;
// reserved for future versions
case 140:
case 150:
case 160:
case 170:
case 180:
if(!ReadStateChunk(is,reserveChunks,size)) ret=false;
break;
// ============================
default:
return false;
}
if(!ret)
return false;
}
if (haveInfo)
{
char buf[14] = {0};
memset(&buf[0], 0, sizeof(buf));
memcpy(buf, header.gameTile, sizeof(header.gameTile));
printf("Savestate info:\n");
printf("\tGame title: %s\n", buf);
printf("\tGame code: %c%c%c%c\n", header.gameCode[3], header.gameCode[2], header.gameCode[1], header.gameCode[0]);
printf("\tMaker code: %c%c (0x%04X) - %s\n", header.makerCode & 0xFF, header.makerCode >> 8, header.makerCode, getDeveloperNameByID(header.makerCode).c_str());
printf("\tDevice capacity: %dMb (real size %dMb)\n", ((128 * 1024) << header.cardSize) / (1024 * 1024), romsize / (1024 * 1024));
printf("\tCRC16: %04Xh\n", header.CRC16);
printf("\tHeader CRC16: %04Xh\n", header.headerCRC16);
if (gameInfo.romsize != romsize || memcmp(&gameInfo.header, &header, sizeof(header)) != 0)
msgbox->warn("The savestate you are loading does not match the ROM you are running.\nYou should find the correct ROM");
}
return ret;
}
static void loadstate()
{
// This should regenerate the vram banks
for (int i = 0; i < 0xA; i++)
_MMU_write08<ARMCPU_ARM9>(0x04000240+i, _MMU_read08<ARMCPU_ARM9>(0x04000240+i));
// This should regenerate the graphics power control register
_MMU_write16<ARMCPU_ARM9>(0x04000304, _MMU_read16<ARMCPU_ARM9>(0x04000304));
// This should regenerate the graphics configuration
//zero 27-jul-09 : was formerly up to 7F but that wrote to dispfifo which is dumb (one of nitsuja's desynch bugs [that he found, not caused])
//so then i brought it down to 66 but this resulted in a conceptual bug with affine start registers, which shouldnt get regenerated
//so then i just made this exhaustive list
// for (int i = REG_BASE_DISPA; i<=REG_BASE_DISPA + 0x66; i+=2)
//_MMU_write16<ARMCPU_ARM9>(i, _MMU_read16<ARMCPU_ARM9>(i));
// for (int i = REG_BASE_DISPB; i<=REG_BASE_DISPB + 0x7F; i+=2)
//_MMU_write16<ARMCPU_ARM9>(i, _MMU_read16<ARMCPU_ARM9>(i));
static const u8 mainRegenAddr[] = {0x00,0x02,0x08,0x0a,0x0c,0x0e,0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x50,0x52,0x54,0x64,0x66,0x6c};
static const u8 subRegenAddr[] = {0x00,0x02,0x08,0x0a,0x0c,0x0e,0x40,0x42,0x44,0x46,0x48,0x4a,0x4c,0x50,0x52,0x54,0x6c};
for(u32 i=0;i<ARRAY_SIZE(mainRegenAddr);i++)
_MMU_write16<ARMCPU_ARM9>(REG_BASE_DISPA+mainRegenAddr[i], _MMU_read16<ARMCPU_ARM9>(REG_BASE_DISPA+mainRegenAddr[i]));
for(u32 i=0;i<ARRAY_SIZE(subRegenAddr);i++)
_MMU_write16<ARMCPU_ARM9>(REG_BASE_DISPB+subRegenAddr[i], _MMU_read16<ARMCPU_ARM9>(REG_BASE_DISPB+subRegenAddr[i]));
// no need to restore 0x60 since control and MMU.ARM9_REG are both in the savestates, and restoring it could mess up the ack bits anyway
SetupMMU(nds.Is_DebugConsole(),nds.Is_DSI());
execute = !driver->EMU_IsEmulationPaused();
}
bool savestate_load(EMUFILE* is)
{
SAV_silent_fail_flag = false;
char header[16];
is->fread(header,16);
if(is->fail() || memcmp(header,magic,16))
return false;
u32 ssversion,dversion,len,comprlen;
if(!read32le(&ssversion,is)) return false;
if(!read32le(&dversion,is)) return false;
if(!read32le(&len,is)) return false;
if(!read32le(&comprlen,is)) return false;
if(ssversion != SAVESTATE_VERSION) return false;
std::vector<u8> buf(len);
if(comprlen != 0xFFFFFFFF) {
#ifndef HAVE_LIBZ
//without libz, we can't decompress this savestate
return false;
#endif
std::vector<char> cbuf(comprlen);
is->fread(&cbuf[0],comprlen);
if(is->fail()) return false;
#ifdef HAVE_LIBZ
uLongf uncomprlen = len;
int error = uncompress((uint8*)&buf[0],&uncomprlen,(uint8*)&cbuf[0],comprlen);
if(error != Z_OK || uncomprlen != len)
return false;
#endif
} else {
is->fread((char*)&buf[0],len-32);
}
//GO!! READ THE SAVESTATE
//THERE IS NO GOING BACK NOW
//reset the emulator first to clean out the host's state
//while the series of resets below should work,
//we are testing the robustness of the savestate system with this full reset.
//the full reset wipes more things, so we can make sure that they are being restored correctly
extern bool _HACK_DONT_STOPMOVIE;
_HACK_DONT_STOPMOVIE = true;
NDS_Reset();
_HACK_DONT_STOPMOVIE = false;
//reset some options to their old defaults which werent saved
nds._DebugConsole = FALSE;
//GPU_Reset(MainScreen.gpu, 0);
//GPU_Reset(SubScreen.gpu, 1);
//gfx3d_reset();
//gpu3D->NDS_3D_Reset();
//SPU_Reset();
EMUFILE_MEMORY mstemp(&buf);
bool x = ReadStateChunks(&mstemp,(s32)len);
if(!x && !SAV_silent_fail_flag)
{
msgbox->error("Error loading savestate. It failed halfway through;\nSince there is no savestate backup system, your current game session is wrecked");
return false;
}
loadstate();
if(nds.ConsoleType != CommonSettings.ConsoleType) {
printf("WARNING: forcing console type to: ConsoleType=%d\n",nds.ConsoleType);
}
if((nds._DebugConsole!=0) != CommonSettings.DebugConsole) {
printf("WARNING: forcing console debug mode to: debugmode=%s\n",nds._DebugConsole?"TRUE":"FALSE");
}
return true;
}
bool savestate_load(const char *file_name)
{
EMUFILE_FILE f(file_name,"rb");
if(f.fail()) return false;
return savestate_load(&f);
}
static std::stack<EMUFILE_MEMORY*> rewindFreeList;
static std::vector<EMUFILE_MEMORY*> rewindbuffer;
int rewindstates = 16;
int rewindinterval = 4;
void rewindsave () {
if(currFrameCounter % rewindinterval)
return;
//printf("rewindsave"); printf("%d%s", currFrameCounter, "\n");
EMUFILE_MEMORY *ms;
if(!rewindFreeList.empty()) {
ms = rewindFreeList.top();
rewindFreeList.pop();
} else {
ms = new EMUFILE_MEMORY(1024*1024*12);
}
if(!savestate_save(ms, Z_NO_COMPRESSION))
return;
rewindbuffer.push_back(ms);
if((int)rewindbuffer.size() > rewindstates) {
delete *rewindbuffer.begin();
rewindbuffer.erase(rewindbuffer.begin());
}
}
void dorewind()
{
if(currFrameCounter % rewindinterval)
return;
//printf("rewind\n");
int size = rewindbuffer.size();
if(size < 1) {
printf("rewind buffer empty\n");
return;
}
printf("%d", size);
EMUFILE_MEMORY* loadms = rewindbuffer[size-1];
loadms->fseek(32, SEEK_SET);
ReadStateChunks(loadms,loadms->size()-32);
loadstate();
if(rewindbuffer.size()>1)
{
rewindFreeList.push(loadms);
rewindbuffer.pop_back();
}
}
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