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Fix for issue #59

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This commit is contained in:
SimoneN64
2023-10-25 22:59:23 +02:00
parent 607071853b
commit 8c044b5cd4
3 changed files with 34 additions and 29 deletions
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55
src/backend/core/mmio/PIF.cpp
View File

@@ -27,33 +27,36 @@ void PIF::Reset() {
}
}
void PIF::LoadMempak(const std::string& path) {
mempakPath = fs::path(path).replace_extension(".mempak").string();
std::error_code error;
if (mempak.is_mapped()) {
mempak.sync(error);
if (error) { Util::panic("Could not sync {}", mempakPath); }
mempak.unmap();
}
FILE* f = fopen(mempakPath.c_str(), "rb");
if (!f) {
f = fopen(mempakPath.c_str(), "wb");
u8* dummy = (u8*)calloc(MEMPAK_SIZE, 1);
fwrite(dummy, 1, MEMPAK_SIZE, f);
free(dummy);
}
void PIF::MaybeLoadMempak() {
if(!mempakOpen) {
mempakPath = fs::path(mempakPath).replace_extension(".mempak").string();
std::error_code error;
if (mempak.is_mapped()) {
mempak.sync(error);
if (error) { Util::panic("Could not sync {}", mempakPath); }
mempak.unmap();
}
FILE *f = fopen(mempakPath.c_str(), "rb");
if (!f) {
f = fopen(mempakPath.c_str(), "wb");
u8 *dummy = (u8 *) calloc(MEMPAK_SIZE, 1);
fwrite(dummy, 1, MEMPAK_SIZE, f);
free(dummy);
}
fseek(f, 0, SEEK_END);
size_t actualSize = ftell(f);
fseek(f, 0, SEEK_SET);
if (actualSize != MEMPAK_SIZE) {
Util::panic("Corrupt mempak!");
}
fclose(f);
fseek(f, 0, SEEK_END);
size_t actualSize = ftell(f);
fseek(f, 0, SEEK_SET);
if (actualSize != MEMPAK_SIZE) {
Util::panic("Corrupt mempak!");
}
fclose(f);
mempak = mio::make_mmap_sink(
mempak = mio::make_mmap_sink(
mempakPath, 0, mio::map_entire_file, error);
if (error) { Util::panic("Could not open {}", mempakPath); }
if (error) { Util::panic("Could not open {}", mempakPath); }
mempakOpen = true;
}
}
FORCE_INLINE size_t getSaveSize(SaveType saveType) {
@@ -247,7 +250,8 @@ void PIF::ProcessCommands(Mem &mem) {
}
}
void PIF::MempakRead(const u8* cmd, u8* res) const {
void PIF::MempakRead(const u8* cmd, u8* res) {
MaybeLoadMempak();
u16 offset = cmd[3] << 8;
offset |= cmd[4];
@@ -274,6 +278,7 @@ void PIF::MempakRead(const u8* cmd, u8* res) const {
}
void PIF::MempakWrite(u8* cmd, u8* res) {
MaybeLoadMempak();
// First two bytes in the command are the offset
u16 offset = cmd[3] << 8;
offset |= cmd[4];

6
src/backend/core/mmio/PIF.hpp
View File

@@ -107,7 +107,7 @@ struct PIF {
PIF() = default;
~PIF() = default;
void Reset();
void LoadMempak(const std::string&);
void MaybeLoadMempak();
void LoadEeprom(SaveType, const std::string&);
void ProcessCommands(Mem&);
void InitDevices(SaveType);
@@ -118,12 +118,12 @@ struct PIF {
void UpdateController();
bool ReadButtons(u8*) const;
void ControllerID(u8*) const;
void MempakRead(const u8*, u8*) const;
void MempakRead(const u8*, u8*);
void MempakWrite(u8*, u8*);
void EepromRead(const u8*, u8*, const Mem&) const;
void EepromWrite(const u8*, u8*, const Mem&);
bool gamepadConnected = false;
bool gamepadConnected = false, mempakOpen = false;
SDL_GameController* gamepad{};
JoybusDevice joybusDevices[6]{};
u8 bootrom[PIF_BOOTROM_SIZE]{}, ram[PIF_RAM_SIZE]{};