GBA Savedata: Fix 512 byte EEPROM saving as 8kB (fixes #877)

This commit is contained in:
Vicki Pfau 2017-09-17 15:01:13 -07:00
parent 4d00f988e8
commit 936eb1d14c
4 changed files with 29 additions and 16 deletions

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@ -23,6 +23,7 @@ Bugfixes:
- GB, GBA: Fix sync to video with frameskip - GB, GBA: Fix sync to video with frameskip
- GB Audio: Fix NRx2 writes while active (fixes mgba.io/i/866) - GB Audio: Fix NRx2 writes while active (fixes mgba.io/i/866)
- GBA BIOS: Use core's VRAM variable instead of renderer's - GBA BIOS: Use core's VRAM variable instead of renderer's
- GBA Savedata: Fix 512 byte EEPROM saving as 8kB (fixes mgba.io/i/877)
Misc: Misc:
- Qt: Don't rebuild library view if style hasn't changed - Qt: Don't rebuild library view if style hasn't changed
- SDL: Fix 2.0.5 build on macOS under some circumstances - SDL: Fix 2.0.5 build on macOS under some circumstances

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@ -67,7 +67,8 @@ enum {
SIZE_CART_SRAM = 0x00010000, SIZE_CART_SRAM = 0x00010000,
SIZE_CART_FLASH512 = 0x00010000, SIZE_CART_FLASH512 = 0x00010000,
SIZE_CART_FLASH1M = 0x00020000, SIZE_CART_FLASH1M = 0x00020000,
SIZE_CART_EEPROM = 0x00002000 SIZE_CART_EEPROM = 0x00002000,
SIZE_CART_EEPROM512 = 0x00000200
}; };
enum { enum {

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@ -147,7 +147,7 @@ size_t GBASavedataSize(struct GBASavedata* savedata) {
case SAVEDATA_FLASH1M: case SAVEDATA_FLASH1M:
return SIZE_CART_FLASH1M; return SIZE_CART_FLASH1M;
case SAVEDATA_EEPROM: case SAVEDATA_EEPROM:
return SIZE_CART_EEPROM; return (savedata->vf && savedata->vf->size(savedata->vf) == SIZE_CART_EEPROM512) ? SIZE_CART_EEPROM512 : SIZE_CART_EEPROM;
case SAVEDATA_FORCE_NONE: case SAVEDATA_FORCE_NONE:
return 0; return 0;
case SAVEDATA_AUTODETECT: case SAVEDATA_AUTODETECT:
@ -257,20 +257,23 @@ void GBASavedataInitEEPROM(struct GBASavedata* savedata, bool realisticTiming) {
mLOG(GBA_SAVE, WARN, "Can't re-initialize savedata"); mLOG(GBA_SAVE, WARN, "Can't re-initialize savedata");
return; return;
} }
int32_t eepromSize = SIZE_CART_EEPROM512;
off_t end; off_t end;
if (!savedata->vf) { if (!savedata->vf) {
end = 0; end = 0;
savedata->data = anonymousMemoryMap(SIZE_CART_EEPROM); savedata->data = anonymousMemoryMap(SIZE_CART_EEPROM);
} else { } else {
end = savedata->vf->size(savedata->vf); end = savedata->vf->size(savedata->vf);
if (end < SIZE_CART_EEPROM) { if (end < SIZE_CART_EEPROM512) {
savedata->vf->truncate(savedata->vf, SIZE_CART_EEPROM); savedata->vf->truncate(savedata->vf, SIZE_CART_EEPROM512);
} else if (end > SIZE_CART_EEPROM512) {
eepromSize = SIZE_CART_EEPROM;
} }
savedata->data = savedata->vf->map(savedata->vf, SIZE_CART_EEPROM, savedata->mapMode); savedata->data = savedata->vf->map(savedata->vf, eepromSize, savedata->mapMode);
} }
savedata->realisticTiming = realisticTiming; savedata->realisticTiming = realisticTiming;
if (end < SIZE_CART_EEPROM) { if (end < SIZE_CART_EEPROM512) {
memset(&savedata->data[end], 0xFF, SIZE_CART_EEPROM - end); memset(&savedata->data[end], 0xFF, SIZE_CART_EEPROM512 - end);
} }
} }
@ -405,6 +408,19 @@ void GBASavedataWriteFlash(struct GBASavedata* savedata, uint16_t address, uint8
} }
} }
static void _ensureEeprom(struct GBASavedata* savedata, uint32_t size) {
if (size < SIZE_CART_EEPROM512) {
return;
}
if (!savedata->vf || savedata->vf->size(savedata->vf) > SIZE_CART_EEPROM512) {
return;
}
savedata->vf->unmap(savedata->vf, savedata->data, SIZE_CART_EEPROM512);
savedata->vf->truncate(savedata->vf, SIZE_CART_EEPROM);
savedata->data = savedata->vf->map(savedata->vf, SIZE_CART_EEPROM, savedata->mapMode);
memset(&savedata->data[SIZE_CART_EEPROM512], 0xFF, SIZE_CART_EEPROM - SIZE_CART_EEPROM512);
}
void GBASavedataWriteEEPROM(struct GBASavedata* savedata, uint16_t value, uint32_t writeSize) { void GBASavedataWriteEEPROM(struct GBASavedata* savedata, uint16_t value, uint32_t writeSize) {
switch (savedata->command) { switch (savedata->command) {
// Read header // Read header
@ -430,6 +446,7 @@ void GBASavedataWriteEEPROM(struct GBASavedata* savedata, uint16_t value, uint32
} else if (writeSize == 1) { } else if (writeSize == 1) {
savedata->command = EEPROM_COMMAND_NULL; savedata->command = EEPROM_COMMAND_NULL;
} else if ((savedata->writeAddress >> 3) < SIZE_CART_EEPROM) { } else if ((savedata->writeAddress >> 3) < SIZE_CART_EEPROM) {
_ensureEeprom(savedata, savedata->writeAddress >> 3);
uint8_t current = savedata->data[savedata->writeAddress >> 3]; uint8_t current = savedata->data[savedata->writeAddress >> 3];
current &= ~(1 << (0x7 - (savedata->writeAddress & 0x7))); current &= ~(1 << (0x7 - (savedata->writeAddress & 0x7)));
current |= (value & 0x1) << (0x7 - (savedata->writeAddress & 0x7)); current |= (value & 0x1) << (0x7 - (savedata->writeAddress & 0x7));
@ -471,6 +488,7 @@ uint16_t GBASavedataReadEEPROM(struct GBASavedata* savedata) {
if (savedata->readBitsRemaining < 64) { if (savedata->readBitsRemaining < 64) {
int step = 63 - savedata->readBitsRemaining; int step = 63 - savedata->readBitsRemaining;
uint32_t address = (savedata->readAddress + step) >> 3; uint32_t address = (savedata->readAddress + step) >> 3;
_ensureEeprom(savedata, address);
if (address >= SIZE_CART_EEPROM) { if (address >= SIZE_CART_EEPROM) {
mLOG(GBA_SAVE, GAME_ERROR, "Reading beyond end of EEPROM: %08X", address); mLOG(GBA_SAVE, GAME_ERROR, "Reading beyond end of EEPROM: %08X", address);
return 0xFF; return 0xFF;

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@ -528,16 +528,9 @@ size_t retro_get_memory_size(unsigned id) {
if (core->platform(core) == PLATFORM_GBA) { if (core->platform(core) == PLATFORM_GBA) {
switch (((struct GBA*) core->board)->memory.savedata.type) { switch (((struct GBA*) core->board)->memory.savedata.type) {
case SAVEDATA_AUTODETECT: case SAVEDATA_AUTODETECT:
case SAVEDATA_FLASH1M:
return SIZE_CART_FLASH1M; return SIZE_CART_FLASH1M;
case SAVEDATA_FLASH512: default:
return SIZE_CART_FLASH512; return GBASavedataSize(&((struct GBA*) core->board)->memory.savedata);
case SAVEDATA_EEPROM:
return SIZE_CART_EEPROM;
case SAVEDATA_SRAM:
return SIZE_CART_SRAM;
case SAVEDATA_FORCE_NONE:
return 0;
} }
} }
#endif #endif