mirror of https://github.com/AxioDL/metaforce.git
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
#include <stdio.h>
|
|
#include "athena/MemoryReader.hpp"
|
|
#include "athena/FileWriter.hpp"
|
|
#include "athena/Checksums.hpp"
|
|
|
|
#if __BYTE_ORDER__ == __BIG_ENDIAN
|
|
#define SBIG(q) q
|
|
#else
|
|
#define SBIG(q) ( ( (q) & 0x000000FF ) << 24 | ( (q) & 0x0000FF00 ) << 8 \
|
|
| ( (q) & 0x00FF0000 ) >> 8 | ( (q) & 0xFF000000 ) >> 24 )
|
|
#endif
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
if (argc < 2)
|
|
{
|
|
printf("mpcksum <save> [output]\n");
|
|
return 1;
|
|
}
|
|
|
|
athena::io::MemoryCopyReader in(argv[1]);
|
|
std::unique_ptr<athena::io::FileWriter> out;
|
|
if (argc > 2)
|
|
out.reset(new athena::io::FileWriter(argv[2]));
|
|
else
|
|
out.reset(new athena::io::FileWriter(argv[1]));
|
|
|
|
atUint32 magic;
|
|
in.readUBytesToBuf(&magic, 4);
|
|
if (magic != SBIG('GM8E') && magic != SBIG('GM8P') && magic != SBIG('GM8J'))
|
|
{
|
|
printf("Unsupported file, MP .gci file expected\n");
|
|
return 1;
|
|
}
|
|
|
|
if (in.length() != 8256)
|
|
{
|
|
printf("File too small expected 8,256 bytes got %" PRIu64, in.length());
|
|
return 1;
|
|
}
|
|
|
|
atUint8* data = in.data();
|
|
|
|
atUint32 newCkSum = athena::Checksums::crc32(data + 68, 8188, 0);
|
|
*(atUint32*)(data + 64) = SBIG(newCkSum);
|
|
out->writeBytes(data, 8256);
|
|
|
|
delete data;
|
|
|
|
return 0;
|
|
}
|