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byte swap checksums

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This commit is contained in:
madeline
2026-03-08 21:13:15 -07:00
parent 26cd6f574a
commit 783566c8b6
1 changed files with 4 additions and 4 deletions
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src/m_Do/m_Do_MemCardRWmng.cpp
+4 -4
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@@ -415,8 +415,8 @@ static u32 mDoMemCdRWm_CalcCheckSum(void* data, u32 size) {
int i;
u16 high, low;
high = low = 0;
u16* d;
for (i = 0, d = (u16*)data; i < size / 2; i++, d++) {
BE(u16)* d;
for (i = 0, d = (BE(u16)*)data; i < size / 2; i++, d++) {
high += *d;
low += ~*d;
}
@@ -443,11 +443,11 @@ BOOL mDoMemCdRWm_TestCheckSumGameData(void* data) {
u64 checksum;
u8* file_ptr = (u8*)data;
checksum = mDoMemCdRWm_CalcCheckSumGameData(data, (SAVEDATA_SIZE - sizeof(u64)));
return checksum == *(u64*)(file_ptr + (SAVEDATA_SIZE - sizeof(u64)));
return checksum == *(BE(u64)*)(file_ptr + (SAVEDATA_SIZE - sizeof(u64)));
}
void mDoMemCdRWm_SetCheckSumGameData(u8* data, u8 dataNum) {
u8* file_ptr = data + (dataNum * SAVEDATA_SIZE);
u64 checksum = mDoMemCdRWm_CalcCheckSumGameData(file_ptr, (SAVEDATA_SIZE - sizeof(u64)));
*(u64*)(file_ptr + (SAVEDATA_SIZE - sizeof(u64))) = checksum;
*(BE(u64)*)(file_ptr + (SAVEDATA_SIZE - sizeof(u64))) = checksum;
}