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GBA: Fix SharkPort saves for EEPROM games

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This commit is contained in:
Vicki Pfau 2018-02-05 22:06:44 -08:00
parent 1a6b47a29f
commit 82f78ba37e
4 changed files with 34 additions and 27 deletions
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1
CHANGES
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@ -50,6 +50,7 @@ Bugfixes:
- GBA Hardware: RTC accuracy improvements
- GB Timer: Minor accuracy improvements
- GB Audio: Clock frame events on DIV
- GBA: Fix SharkPort saves for EEPROM games
Misc:
- GBA Timer: Use global cycles for timers
- GBA: Extend oddly-sized ROMs to full address space (fixes mgba.io/i/722)

2
include/mgba/internal/gba/savedata.h
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@ -102,7 +102,7 @@ void GBASavedataDeinit(struct GBASavedata* savedata);
void GBASavedataMask(struct GBASavedata* savedata, struct VFile* vf, bool writeback);
void GBASavedataUnmask(struct GBASavedata* savedata);
size_t GBASavedataSize(struct GBASavedata* savedata);
size_t GBASavedataSize(const struct GBASavedata* savedata);
bool GBASavedataClone(struct GBASavedata* savedata, struct VFile* out);
bool GBASavedataLoad(struct GBASavedata* savedata, struct VFile* in);
void GBASavedataForceType(struct GBASavedata* savedata, enum SavedataType type, bool realisticTiming);

2
src/gba/savedata.c
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@ -138,7 +138,7 @@ bool GBASavedataClone(struct GBASavedata* savedata, struct VFile* out) {
return true;
}
size_t GBASavedataSize(struct GBASavedata* savedata) {
size_t GBASavedataSize(const struct GBASavedata* savedata) {
switch (savedata->type) {
case SAVEDATA_SRAM:
return SIZE_CART_SRAM;

56
src/gba/sharkport.c
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@ -130,8 +130,21 @@ bool GBASavedataImportSharkPort(struct GBA* gba, struct VFile* vf, bool testChec
goto cleanup;
}
memcpy(gba->memory.savedata.data, &payload[0x1C], copySize);
gba->memory.savedata.vf && gba->memory.savedata.vf->sync(gba->memory.savedata.vf, gba->memory.savedata.data, size);
if (gba->memory.savedata.type == SAVEDATA_EEPROM) {
size_t i;
for (i = 0; i < copySize; i += 8) {
uint32_t lo, hi;
LOAD_32BE(lo, i + 0x1C, payload);
LOAD_32BE(hi, i + 0x20, payload);
STORE_32LE(hi, i, gba->memory.savedata.data);
STORE_32LE(lo, i + 4, gba->memory.savedata.data);
}
} else {
memcpy(gba->memory.savedata.data, &payload[0x1C], copySize);
}
if (gba->memory.savedata.vf) {
gba->memory.savedata.vf->sync(gba->memory.savedata.vf, gba->memory.savedata.data, size);
}
free(payload);
return true;
@ -146,7 +159,7 @@ bool GBASavedataExportSharkPort(const struct GBA* gba, struct VFile* vf) {
char c[0x1C];
int32_t i;
} buffer;
int32_t size = strlen(SHARKPORT_HEADER);
uint32_t size = strlen(SHARKPORT_HEADER);
STORE_32(size, 0, &buffer.i);
if (vf->write(vf, &buffer.i, 4) < 4) {
return false;
@ -187,22 +200,8 @@ bool GBASavedataExportSharkPort(const struct GBA* gba, struct VFile* vf) {
}
// Write payload
size = 0x1C;
switch (gba->memory.savedata.type) {
case SAVEDATA_SRAM:
size += SIZE_CART_SRAM;
break;
case SAVEDATA_FLASH512:
size += SIZE_CART_FLASH512;
break;
case SAVEDATA_FLASH1M:
size += SIZE_CART_FLASH1M;
break;
case SAVEDATA_EEPROM:
size += SIZE_CART_EEPROM;
break;
case SAVEDATA_FORCE_NONE:
case SAVEDATA_AUTODETECT:
size = 0x1C + GBASavedataSize(&gba->memory.savedata);
if (size == 0x1C) {
return false;
}
STORE_32(size, 0, &buffer.i);
@ -229,17 +228,24 @@ bool GBASavedataExportSharkPort(const struct GBA* gba, struct VFile* vf) {
}
uint32_t checksum = 0;
int i;
size_t i;
for (i = 0; i < 0x1C; ++i) {
checksum += buffer.c[i] << (checksum % 24);
}
if (vf->write(vf, gba->memory.savedata.data, size) < size) {
return false;
}
for (i = 0; i < size; ++i) {
checksum += ((char) gba->memory.savedata.data[i]) << (checksum % 24);
if (gba->memory.savedata.type == SAVEDATA_EEPROM) {
for (i = 0; i < size; ++i) {
char byte = gba->memory.savedata.data[i ^ 7];
checksum += byte << (checksum % 24);
vf->write(vf, &byte, 1);
}
} else if (vf->write(vf, gba->memory.savedata.data, size) < size) {
return false;
} else {
for (i = 0; i < size; ++i) {
checksum += ((char) gba->memory.savedata.data[i]) << (checksum % 24);
}
}
STORE_32(checksum, 0, &buffer.i);