/
GBA.cpp
4295 lines (3884 loc) · 117 KB
/
GBA.cpp
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#include <cmath>
#include <memory.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef _MSC_VER
#include <strings.h>
#endif
#include "../NLS.h"
#include "../System.h"
#include "../Util.h"
#include "../common/ConfigManager.h"
#include "../common/Port.h"
#include "Cheats.h"
#include "EEprom.h"
#include "Flash.h"
#include "GBA.h"
#include "GBAGfx.h"
#include "GBALink.h"
#include "GBAcpu.h"
#include "GBAinline.h"
#include "Globals.h"
#include "Sound.h"
#include "Sram.h"
#include "agbprint.h"
#include "bios.h"
#include "elf.h"
#include "ereader.h"
#ifdef PROFILING
#include "prof/prof.h"
#endif
#ifdef __GNUC__
#define _stricmp strcasecmp
#endif
extern int emulating;
bool debugger;
int SWITicks = 0;
int IRQTicks = 0;
uint32_t mastercode = 0;
int layerEnableDelay = 0;
bool busPrefetch = false;
bool busPrefetchEnable = false;
uint32_t busPrefetchCount = 0;
int cpuDmaTicksToUpdate = 0;
int cpuDmaCount = 0;
bool cpuDmaHack = false;
uint32_t cpuDmaLast = 0;
int dummyAddress = 0;
bool cpuBreakLoop = false;
int cpuNextEvent = 0;
bool intState = false;
bool stopState = false;
bool holdState = false;
int holdType = 0;
bool cpuSramEnabled = true;
bool cpuFlashEnabled = true;
bool cpuEEPROMEnabled = true;
bool cpuEEPROMSensorEnabled = false;
uint32_t cpuPrefetch[2];
int cpuTotalTicks = 0;
#ifdef PROFILING
int profilingTicks = 0;
int profilingTicksReload = 0;
static profile_segment* profilSegment = NULL;
#endif
#ifdef BKPT_SUPPORT
uint8_t freezeWorkRAM[SIZE_WRAM];
uint8_t freezeInternalRAM[SIZE_IRAM];
uint8_t freezeVRAM[0x18000];
uint8_t freezePRAM[SIZE_PRAM];
uint8_t freezeOAM[SIZE_OAM];
bool debugger_last;
#endif
int lcdTicks = (useBios && !skipBios) ? 1008 : 208;
uint8_t timerOnOffDelay = 0;
uint16_t timer0Value = 0;
bool timer0On = false;
int timer0Ticks = 0;
int timer0Reload = 0;
int timer0ClockReload = 0;
uint16_t timer1Value = 0;
bool timer1On = false;
int timer1Ticks = 0;
int timer1Reload = 0;
int timer1ClockReload = 0;
uint16_t timer2Value = 0;
bool timer2On = false;
int timer2Ticks = 0;
int timer2Reload = 0;
int timer2ClockReload = 0;
uint16_t timer3Value = 0;
bool timer3On = false;
int timer3Ticks = 0;
int timer3Reload = 0;
int timer3ClockReload = 0;
uint32_t dma0Source = 0;
uint32_t dma0Dest = 0;
uint32_t dma1Source = 0;
uint32_t dma1Dest = 0;
uint32_t dma2Source = 0;
uint32_t dma2Dest = 0;
uint32_t dma3Source = 0;
uint32_t dma3Dest = 0;
void (*cpuSaveGameFunc)(uint32_t, uint8_t) = flashSaveDecide;
void (*renderLine)() = mode0RenderLine;
bool fxOn = false;
bool windowOn = false;
int frameCount = 0;
char buffer[1024];
uint32_t lastTime = 0;
int count = 0;
int capture = 0;
int capturePrevious = 0;
int captureNumber = 0;
int armOpcodeCount = 0;
int thumbOpcodeCount = 0;
const int TIMER_TICKS[4] = {
0,
6,
8,
10
};
const uint32_t objTilesAddress[3] = { 0x010000, 0x014000, 0x014000 };
const uint8_t gamepakRamWaitState[4] = { 4, 3, 2, 8 };
const uint8_t gamepakWaitState[4] = { 4, 3, 2, 8 };
const uint8_t gamepakWaitState0[2] = { 2, 1 };
const uint8_t gamepakWaitState1[2] = { 4, 1 };
const uint8_t gamepakWaitState2[2] = { 8, 1 };
uint8_t memoryWait[16] = { 0, 0, 2, 0, 0, 0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 0 };
uint8_t memoryWait32[16] = { 0, 0, 5, 0, 0, 1, 1, 0, 7, 7, 9, 9, 13, 13, 4, 0 };
uint8_t memoryWaitSeq[16] = { 0, 0, 2, 0, 0, 0, 0, 0, 2, 2, 4, 4, 8, 8, 4, 0 };
uint8_t memoryWaitSeq32[16] = { 0, 0, 5, 0, 0, 1, 1, 0, 5, 5, 9, 9, 17, 17, 4, 0 };
// The videoMemoryWait constants are used to add some waitstates
// if the opcode access video memory data outside of vblank/hblank
// It seems to happen on only one ticks for each pixel.
// Not used for now (too problematic with current code).
//const uint8_t videoMemoryWait[16] =
// {0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0};
uint8_t biosProtected[4];
#ifdef WORDS_BIGENDIAN
bool cpuBiosSwapped = false;
#endif
uint32_t myROM[] = {
0xEA000006,
0xEA000093,
0xEA000006,
0x00000000,
0x00000000,
0x00000000,
0xEA000088,
0x00000000,
0xE3A00302,
0xE1A0F000,
0xE92D5800,
0xE55EC002,
0xE28FB03C,
0xE79BC10C,
0xE14FB000,
0xE92D0800,
0xE20BB080,
0xE38BB01F,
0xE129F00B,
0xE92D4004,
0xE1A0E00F,
0xE12FFF1C,
0xE8BD4004,
0xE3A0C0D3,
0xE129F00C,
0xE8BD0800,
0xE169F00B,
0xE8BD5800,
0xE1B0F00E,
0x0000009C,
0x0000009C,
0x0000009C,
0x0000009C,
0x000001F8,
0x000001F0,
0x000000AC,
0x000000A0,
0x000000FC,
0x00000168,
0xE12FFF1E,
0xE1A03000,
0xE1A00001,
0xE1A01003,
0xE2113102,
0x42611000,
0xE033C040,
0x22600000,
0xE1B02001,
0xE15200A0,
0x91A02082,
0x3AFFFFFC,
0xE1500002,
0xE0A33003,
0x20400002,
0xE1320001,
0x11A020A2,
0x1AFFFFF9,
0xE1A01000,
0xE1A00003,
0xE1B0C08C,
0x22600000,
0x42611000,
0xE12FFF1E,
0xE92D0010,
0xE1A0C000,
0xE3A01001,
0xE1500001,
0x81A000A0,
0x81A01081,
0x8AFFFFFB,
0xE1A0000C,
0xE1A04001,
0xE3A03000,
0xE1A02001,
0xE15200A0,
0x91A02082,
0x3AFFFFFC,
0xE1500002,
0xE0A33003,
0x20400002,
0xE1320001,
0x11A020A2,
0x1AFFFFF9,
0xE0811003,
0xE1B010A1,
0xE1510004,
0x3AFFFFEE,
0xE1A00004,
0xE8BD0010,
0xE12FFF1E,
0xE0010090,
0xE1A01741,
0xE2611000,
0xE3A030A9,
0xE0030391,
0xE1A03743,
0xE2833E39,
0xE0030391,
0xE1A03743,
0xE2833C09,
0xE283301C,
0xE0030391,
0xE1A03743,
0xE2833C0F,
0xE28330B6,
0xE0030391,
0xE1A03743,
0xE2833C16,
0xE28330AA,
0xE0030391,
0xE1A03743,
0xE2833A02,
0xE2833081,
0xE0030391,
0xE1A03743,
0xE2833C36,
0xE2833051,
0xE0030391,
0xE1A03743,
0xE2833CA2,
0xE28330F9,
0xE0000093,
0xE1A00840,
0xE12FFF1E,
0xE3A00001,
0xE3A01001,
0xE92D4010,
0xE3A03000,
0xE3A04001,
0xE3500000,
0x1B000004,
0xE5CC3301,
0xEB000002,
0x0AFFFFFC,
0xE8BD4010,
0xE12FFF1E,
0xE3A0C301,
0xE5CC3208,
0xE15C20B8,
0xE0110002,
0x10222000,
0x114C20B8,
0xE5CC4208,
0xE12FFF1E,
0xE92D500F,
0xE3A00301,
0xE1A0E00F,
0xE510F004,
0xE8BD500F,
0xE25EF004,
0xE59FD044,
0xE92D5000,
0xE14FC000,
0xE10FE000,
0xE92D5000,
0xE3A0C302,
0xE5DCE09C,
0xE35E00A5,
0x1A000004,
0x05DCE0B4,
0x021EE080,
0xE28FE004,
0x159FF018,
0x059FF018,
0xE59FD018,
0xE8BD5000,
0xE169F00C,
0xE8BD5000,
0xE25EF004,
0x03007FF0,
0x09FE2000,
0x09FFC000,
0x03007FE0
};
variable_desc saveGameStruct[] = {
{ &DISPCNT, sizeof(uint16_t) },
{ &DISPSTAT, sizeof(uint16_t) },
{ &VCOUNT, sizeof(uint16_t) },
{ &BG0CNT, sizeof(uint16_t) },
{ &BG1CNT, sizeof(uint16_t) },
{ &BG2CNT, sizeof(uint16_t) },
{ &BG3CNT, sizeof(uint16_t) },
{ &BG0HOFS, sizeof(uint16_t) },
{ &BG0VOFS, sizeof(uint16_t) },
{ &BG1HOFS, sizeof(uint16_t) },
{ &BG1VOFS, sizeof(uint16_t) },
{ &BG2HOFS, sizeof(uint16_t) },
{ &BG2VOFS, sizeof(uint16_t) },
{ &BG3HOFS, sizeof(uint16_t) },
{ &BG3VOFS, sizeof(uint16_t) },
{ &BG2PA, sizeof(uint16_t) },
{ &BG2PB, sizeof(uint16_t) },
{ &BG2PC, sizeof(uint16_t) },
{ &BG2PD, sizeof(uint16_t) },
{ &BG2X_L, sizeof(uint16_t) },
{ &BG2X_H, sizeof(uint16_t) },
{ &BG2Y_L, sizeof(uint16_t) },
{ &BG2Y_H, sizeof(uint16_t) },
{ &BG3PA, sizeof(uint16_t) },
{ &BG3PB, sizeof(uint16_t) },
{ &BG3PC, sizeof(uint16_t) },
{ &BG3PD, sizeof(uint16_t) },
{ &BG3X_L, sizeof(uint16_t) },
{ &BG3X_H, sizeof(uint16_t) },
{ &BG3Y_L, sizeof(uint16_t) },
{ &BG3Y_H, sizeof(uint16_t) },
{ &WIN0H, sizeof(uint16_t) },
{ &WIN1H, sizeof(uint16_t) },
{ &WIN0V, sizeof(uint16_t) },
{ &WIN1V, sizeof(uint16_t) },
{ &WININ, sizeof(uint16_t) },
{ &WINOUT, sizeof(uint16_t) },
{ &MOSAIC, sizeof(uint16_t) },
{ &BLDMOD, sizeof(uint16_t) },
{ &COLEV, sizeof(uint16_t) },
{ &COLY, sizeof(uint16_t) },
{ &DM0SAD_L, sizeof(uint16_t) },
{ &DM0SAD_H, sizeof(uint16_t) },
{ &DM0DAD_L, sizeof(uint16_t) },
{ &DM0DAD_H, sizeof(uint16_t) },
{ &DM0CNT_L, sizeof(uint16_t) },
{ &DM0CNT_H, sizeof(uint16_t) },
{ &DM1SAD_L, sizeof(uint16_t) },
{ &DM1SAD_H, sizeof(uint16_t) },
{ &DM1DAD_L, sizeof(uint16_t) },
{ &DM1DAD_H, sizeof(uint16_t) },
{ &DM1CNT_L, sizeof(uint16_t) },
{ &DM1CNT_H, sizeof(uint16_t) },
{ &DM2SAD_L, sizeof(uint16_t) },
{ &DM2SAD_H, sizeof(uint16_t) },
{ &DM2DAD_L, sizeof(uint16_t) },
{ &DM2DAD_H, sizeof(uint16_t) },
{ &DM2CNT_L, sizeof(uint16_t) },
{ &DM2CNT_H, sizeof(uint16_t) },
{ &DM3SAD_L, sizeof(uint16_t) },
{ &DM3SAD_H, sizeof(uint16_t) },
{ &DM3DAD_L, sizeof(uint16_t) },
{ &DM3DAD_H, sizeof(uint16_t) },
{ &DM3CNT_L, sizeof(uint16_t) },
{ &DM3CNT_H, sizeof(uint16_t) },
{ &TM0D, sizeof(uint16_t) },
{ &TM0CNT, sizeof(uint16_t) },
{ &TM1D, sizeof(uint16_t) },
{ &TM1CNT, sizeof(uint16_t) },
{ &TM2D, sizeof(uint16_t) },
{ &TM2CNT, sizeof(uint16_t) },
{ &TM3D, sizeof(uint16_t) },
{ &TM3CNT, sizeof(uint16_t) },
{ &P1, sizeof(uint16_t) },
{ &IE, sizeof(uint16_t) },
{ &IF, sizeof(uint16_t) },
{ &IME, sizeof(uint16_t) },
{ &holdState, sizeof(bool) },
{ &holdType, sizeof(int) },
{ &lcdTicks, sizeof(int) },
{ &timer0On, sizeof(bool) },
{ &timer0Ticks, sizeof(int) },
{ &timer0Reload, sizeof(int) },
{ &timer0ClockReload, sizeof(int) },
{ &timer1On, sizeof(bool) },
{ &timer1Ticks, sizeof(int) },
{ &timer1Reload, sizeof(int) },
{ &timer1ClockReload, sizeof(int) },
{ &timer2On, sizeof(bool) },
{ &timer2Ticks, sizeof(int) },
{ &timer2Reload, sizeof(int) },
{ &timer2ClockReload, sizeof(int) },
{ &timer3On, sizeof(bool) },
{ &timer3Ticks, sizeof(int) },
{ &timer3Reload, sizeof(int) },
{ &timer3ClockReload, sizeof(int) },
{ &dma0Source, sizeof(uint32_t) },
{ &dma0Dest, sizeof(uint32_t) },
{ &dma1Source, sizeof(uint32_t) },
{ &dma1Dest, sizeof(uint32_t) },
{ &dma2Source, sizeof(uint32_t) },
{ &dma2Dest, sizeof(uint32_t) },
{ &dma3Source, sizeof(uint32_t) },
{ &dma3Dest, sizeof(uint32_t) },
{ &fxOn, sizeof(bool) },
{ &windowOn, sizeof(bool) },
{ &N_FLAG, sizeof(bool) },
{ &C_FLAG, sizeof(bool) },
{ &Z_FLAG, sizeof(bool) },
{ &V_FLAG, sizeof(bool) },
{ &armState, sizeof(bool) },
{ &armIrqEnable, sizeof(bool) },
{ &armNextPC, sizeof(uint32_t) },
{ &armMode, sizeof(int) },
{ &saveType, sizeof(int) },
{ NULL, 0 }
};
static int romSize = SIZE_ROM;
void gbaUpdateRomSize(int size)
{
// Only change memory block if new size is larger
if (size > romSize) {
romSize = size;
uint8_t* tmp = (uint8_t*)realloc(rom, SIZE_ROM);
rom = tmp;
uint16_t* temp = (uint16_t*)(rom + ((romSize + 1) & ~1));
for (int i = (romSize + 1) & ~1; i < SIZE_ROM; i += 2) {
WRITE16LE(temp, (i >> 1) & 0xFFFF);
temp++;
}
}
}
#ifdef PROFILING
void cpuProfil(profile_segment* seg)
{
profilSegment = seg;
}
void cpuEnableProfiling(int hz)
{
if (hz == 0)
hz = 100;
profilingTicks = profilingTicksReload = 16777216 / hz;
profSetHertz(hz);
}
#endif
inline int CPUUpdateTicks()
{
int cpuLoopTicks = lcdTicks;
//if (soundTicks < cpuLoopTicks)
//cpuLoopTicks = soundTicks;
if (timer0On && (timer0Ticks < cpuLoopTicks)) {
cpuLoopTicks = timer0Ticks;
}
if (timer1On && !(TM1CNT & 4) && (timer1Ticks < cpuLoopTicks)) {
cpuLoopTicks = timer1Ticks;
}
if (timer2On && !(TM2CNT & 4) && (timer2Ticks < cpuLoopTicks)) {
cpuLoopTicks = timer2Ticks;
}
if (timer3On && !(TM3CNT & 4) && (timer3Ticks < cpuLoopTicks)) {
cpuLoopTicks = timer3Ticks;
}
#ifdef PROFILING
if (profilingTicksReload != 0) {
if (profilingTicks < cpuLoopTicks) {
cpuLoopTicks = profilingTicks;
}
}
#endif
if (SWITicks) {
if (SWITicks < cpuLoopTicks)
cpuLoopTicks = SWITicks;
}
if (IRQTicks) {
if (IRQTicks < cpuLoopTicks)
cpuLoopTicks = IRQTicks;
}
return cpuLoopTicks;
}
void CPUUpdateWindow0()
{
int x00 = WIN0H >> 8;
int x01 = WIN0H & 255;
if (x00 <= x01) {
for (int i = 0; i < 240; i++) {
gfxInWin0[i] = (i >= x00 && i < x01);
}
} else {
for (int i = 0; i < 240; i++) {
gfxInWin0[i] = (i >= x00 || i < x01);
}
}
}
void CPUUpdateWindow1()
{
int x00 = WIN1H >> 8;
int x01 = WIN1H & 255;
if (x00 <= x01) {
for (int i = 0; i < 240; i++) {
gfxInWin1[i] = (i >= x00 && i < x01);
}
} else {
for (int i = 0; i < 240; i++) {
gfxInWin1[i] = (i >= x00 || i < x01);
}
}
}
extern uint32_t line0[240];
extern uint32_t line1[240];
extern uint32_t line2[240];
extern uint32_t line3[240];
#define CLEAR_ARRAY(a) \
{ \
uint32_t* array = (a); \
for (int i = 0; i < 240; i++) { \
*array++ = 0x80000000; \
} \
}
void CPUUpdateRenderBuffers(bool force)
{
if (!(layerEnable & 0x0100) || force) {
CLEAR_ARRAY(line0);
}
if (!(layerEnable & 0x0200) || force) {
CLEAR_ARRAY(line1);
}
if (!(layerEnable & 0x0400) || force) {
CLEAR_ARRAY(line2);
}
if (!(layerEnable & 0x0800) || force) {
CLEAR_ARRAY(line3);
}
}
#ifdef __LIBRETRO__
#include <stddef.h>
unsigned int CPUWriteState(uint8_t* data, unsigned size)
{
uint8_t* orig = data;
utilWriteIntMem(data, SAVE_GAME_VERSION);
utilWriteMem(data, &rom[0xa0], 16);
utilWriteIntMem(data, useBios);
utilWriteMem(data, ®[0], sizeof(reg));
utilWriteDataMem(data, saveGameStruct);
utilWriteIntMem(data, stopState);
utilWriteIntMem(data, IRQTicks);
utilWriteMem(data, internalRAM, SIZE_IRAM);
utilWriteMem(data, paletteRAM, SIZE_PRAM);
utilWriteMem(data, workRAM, SIZE_WRAM);
utilWriteMem(data, vram, SIZE_VRAM);
utilWriteMem(data, oam, SIZE_OAM);
utilWriteMem(data, pix, SIZE_PIX);
utilWriteMem(data, ioMem, SIZE_IOMEM);
eepromSaveGame(data);
flashSaveGame(data);
soundSaveGame(data);
rtcSaveGame(data);
return (ptrdiff_t)data - (ptrdiff_t)orig;
}
bool CPUWriteMemState(char* memory, int available, long& reserved)
{
return false;
}
bool CPUReadState(const uint8_t* data, unsigned size)
{
// Don't really care about version.
int version = utilReadIntMem(data);
if (version != SAVE_GAME_VERSION)
return false;
char romname[16];
utilReadMem(romname, data, 16);
if (memcmp(&rom[0xa0], romname, 16) != 0)
return false;
// Don't care about use bios ...
utilReadIntMem(data);
utilReadMem(®[0], data, sizeof(reg));
utilReadDataMem(data, saveGameStruct);
stopState = utilReadIntMem(data) ? true : false;
IRQTicks = utilReadIntMem(data);
if (IRQTicks > 0)
intState = true;
else {
intState = false;
IRQTicks = 0;
}
utilReadMem(internalRAM, data, SIZE_IRAM);
utilReadMem(paletteRAM, data, SIZE_PRAM);
utilReadMem(workRAM, data, SIZE_WRAM);
utilReadMem(vram, data, SIZE_VRAM);
utilReadMem(oam, data, SIZE_OAM);
utilReadMem(pix, data, SIZE_PIX);
utilReadMem(ioMem, data, SIZE_IOMEM);
eepromReadGame(data, version);
flashReadGame(data, version);
soundReadGame(data, version);
rtcReadGame(data);
//// Copypasta stuff ...
// set pointers!
layerEnable = layerSettings & DISPCNT;
CPUUpdateRender();
// CPU Update Render Buffers set to true
CLEAR_ARRAY(line0);
CLEAR_ARRAY(line1);
CLEAR_ARRAY(line2);
CLEAR_ARRAY(line3);
// End of CPU Update Render Buffers set to true
CPUUpdateWindow0();
CPUUpdateWindow1();
SetSaveType(saveType);
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
if (armState) {
ARM_PREFETCH;
} else {
THUMB_PREFETCH;
}
CPUUpdateRegister(0x204, CPUReadHalfWordQuick(0x4000204));
return true;
}
#else // !__LIBRETRO__
static bool CPUWriteState(gzFile gzFile)
{
utilWriteInt(gzFile, SAVE_GAME_VERSION);
utilGzWrite(gzFile, &rom[0xa0], 16);
utilWriteInt(gzFile, useBios);
utilGzWrite(gzFile, ®[0], sizeof(reg));
utilWriteData(gzFile, saveGameStruct);
// new to version 0.7.1
utilWriteInt(gzFile, stopState);
// new to version 0.8
utilWriteInt(gzFile, IRQTicks);
utilGzWrite(gzFile, internalRAM, SIZE_IRAM);
utilGzWrite(gzFile, paletteRAM, SIZE_PRAM);
utilGzWrite(gzFile, workRAM, SIZE_WRAM);
utilGzWrite(gzFile, vram, SIZE_VRAM);
utilGzWrite(gzFile, oam, SIZE_OAM);
utilGzWrite(gzFile, pix, SIZE_PIX);
utilGzWrite(gzFile, ioMem, SIZE_IOMEM);
eepromSaveGame(gzFile);
flashSaveGame(gzFile);
soundSaveGame(gzFile);
cheatsSaveGame(gzFile);
// version 1.5
rtcSaveGame(gzFile);
return true;
}
bool CPUWriteState(const char* file)
{
gzFile gzFile = utilGzOpen(file, "wb");
if (gzFile == NULL) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), file);
return false;
}
bool res = CPUWriteState(gzFile);
utilGzClose(gzFile);
return res;
}
bool CPUWriteMemState(char* memory, int available, long& reserved)
{
gzFile gzFile = utilMemGzOpen(memory, available, "w");
if (gzFile == NULL) {
return false;
}
bool res = CPUWriteState(gzFile);
reserved = utilGzMemTell(gzFile) + 8;
if (reserved >= (available))
res = false;
utilGzClose(gzFile);
return res;
}
static bool CPUReadState(gzFile gzFile)
{
int version = utilReadInt(gzFile);
if (version > SAVE_GAME_VERSION || version < SAVE_GAME_VERSION_1) {
systemMessage(MSG_UNSUPPORTED_VBA_SGM,
N_("Unsupported VisualBoyAdvance save game version %d"),
version);
return false;
}
uint8_t romname[17];
utilGzRead(gzFile, romname, 16);
if (memcmp(&rom[0xa0], romname, 16) != 0) {
romname[16] = 0;
for (int i = 0; i < 16; i++)
if (romname[i] < 32)
romname[i] = 32;
systemMessage(MSG_CANNOT_LOAD_SGM, N_("Cannot load save game for %s"), romname);
return false;
}
bool ub = utilReadInt(gzFile) ? true : false;
if (ub != useBios) {
if (useBios)
systemMessage(MSG_SAVE_GAME_NOT_USING_BIOS,
N_("Save game is not using the BIOS files"));
else
systemMessage(MSG_SAVE_GAME_USING_BIOS,
N_("Save game is using the BIOS file"));
return false;
}
utilGzRead(gzFile, ®[0], sizeof(reg));
utilReadData(gzFile, saveGameStruct);
if (version < SAVE_GAME_VERSION_3)
stopState = false;
else
stopState = utilReadInt(gzFile) ? true : false;
if (version < SAVE_GAME_VERSION_4) {
IRQTicks = 0;
intState = false;
} else {
IRQTicks = utilReadInt(gzFile);
if (IRQTicks > 0)
intState = true;
else {
intState = false;
IRQTicks = 0;
}
}
utilGzRead(gzFile, internalRAM, SIZE_IRAM);
utilGzRead(gzFile, paletteRAM, SIZE_PRAM);
utilGzRead(gzFile, workRAM, SIZE_WRAM);
utilGzRead(gzFile, vram, SIZE_VRAM);
utilGzRead(gzFile, oam, SIZE_OAM);
if (version < SAVE_GAME_VERSION_6)
utilGzRead(gzFile, pix, 4 * 240 * 160);
else
utilGzRead(gzFile, pix, SIZE_PIX);
utilGzRead(gzFile, ioMem, SIZE_IOMEM);
if (skipSaveGameBattery) {
// skip eeprom data
eepromReadGameSkip(gzFile, version);
// skip flash data
flashReadGameSkip(gzFile, version);
} else {
eepromReadGame(gzFile, version);
flashReadGame(gzFile, version);
}
soundReadGame(gzFile, version);
if (version > SAVE_GAME_VERSION_1) {
if (skipSaveGameCheats) {
// skip cheats list data
cheatsReadGameSkip(gzFile, version);
} else {
cheatsReadGame(gzFile, version);
}
}
if (version > SAVE_GAME_VERSION_6) {
rtcReadGame(gzFile);
}
if (version <= SAVE_GAME_VERSION_7) {
uint32_t temp;
#define SWAP(a, b, c) \
temp = (a); \
(a) = (b) << 16 | (c); \
(b) = (temp) >> 16; \
(c) = (temp)&0xFFFF;
SWAP(dma0Source, DM0SAD_H, DM0SAD_L);
SWAP(dma0Dest, DM0DAD_H, DM0DAD_L);
SWAP(dma1Source, DM1SAD_H, DM1SAD_L);
SWAP(dma1Dest, DM1DAD_H, DM1DAD_L);
SWAP(dma2Source, DM2SAD_H, DM2SAD_L);
SWAP(dma2Dest, DM2DAD_H, DM2DAD_L);
SWAP(dma3Source, DM3SAD_H, DM3SAD_L);
SWAP(dma3Dest, DM3DAD_H, DM3DAD_L);
}
if (version <= SAVE_GAME_VERSION_8) {
timer0ClockReload = TIMER_TICKS[TM0CNT & 3];
timer1ClockReload = TIMER_TICKS[TM1CNT & 3];
timer2ClockReload = TIMER_TICKS[TM2CNT & 3];
timer3ClockReload = TIMER_TICKS[TM3CNT & 3];
timer0Ticks = ((0x10000 - TM0D) << timer0ClockReload) - timer0Ticks;
timer1Ticks = ((0x10000 - TM1D) << timer1ClockReload) - timer1Ticks;
timer2Ticks = ((0x10000 - TM2D) << timer2ClockReload) - timer2Ticks;
timer3Ticks = ((0x10000 - TM3D) << timer3ClockReload) - timer3Ticks;
interp_rate();
}
// set pointers!
layerEnable = layerSettings & DISPCNT;
CPUUpdateRender();
CPUUpdateRenderBuffers(true);
CPUUpdateWindow0();
CPUUpdateWindow1();
SetSaveType(saveType);
systemSaveUpdateCounter = SYSTEM_SAVE_NOT_UPDATED;
if (armState) {
ARM_PREFETCH;
} else {
THUMB_PREFETCH;
}
CPUUpdateRegister(0x204, CPUReadHalfWordQuick(0x4000204));
return true;
}
bool CPUReadMemState(char* memory, int available)
{
gzFile gzFile = utilMemGzOpen(memory, available, "r");
bool res = CPUReadState(gzFile);
utilGzClose(gzFile);
return res;
}
bool CPUReadState(const char* file)
{
gzFile gzFile = utilGzOpen(file, "rb");
if (gzFile == NULL)
return false;
bool res = CPUReadState(gzFile);
utilGzClose(gzFile);
return res;
}
#endif
bool CPUExportEepromFile(const char* fileName)
{
if (eepromInUse) {
FILE* file = utilOpenFile(fileName, "wb");
if (!file) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"),
fileName);
return false;
}
for (int i = 0; i < eepromSize;) {
for (int j = 0; j < 8; j++) {
if (fwrite(&eepromData[i + 7 - j], 1, 1, file) != 1) {
fclose(file);
return false;
}
}
i += 8;
}
fclose(file);
}
return true;
}
bool CPUWriteBatteryFile(const char* fileName)
{
if ((saveType) && (saveType != GBA_SAVE_NONE)) {
FILE* file = utilOpenFile(fileName, "wb");
if (!file) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"),
fileName);
return false;
}
// only save if Flash/Sram in use or EEprom in use
if (!eepromInUse) {
if (saveType == GBA_SAVE_FLASH) { // save flash type
if (fwrite(flashSaveMemory, 1, flashSize, file) != (size_t)flashSize) {
fclose(file);
return false;
}
} else if (saveType == GBA_SAVE_SRAM) { // save sram type
if (fwrite(flashSaveMemory, 1, 0x8000, file) != 0x8000) {
fclose(file);
return false;
}
}
} else { // save eeprom type