lightningbolt/bolt.hexpat

// Copyright 2023 The LightningBolt Authors
// SPDX-License-Identifier: MIT

struct BoltHdr {
    char magic[6]; // BOLT\r\n
    
    // have no idea what these are yet
    u8 unk2;
    u8 unk3;
    
    // or these, they don't seem to be
    // directly referenced by bolt stuff
    u8 unk5;
    u8 unk6;
    u8 unk7;
    
    u8 groupCount;
    
    // in bytes
    u32 libSize;
};

struct BoltGroupEnt {
    u32 unk;
    u32 fileSize;
    u32 fileOffset;
    u32 unk3;
    
    u8 fileData[4] @ fileOffset;
};

struct BoltGroupDesc {
    // flags?
    u8 unk;
    u8 unk2;
    u8 unk3;
    u8 groupEntCount;
    
    // in bytes
    u32 groupSize;
    u32 groupOffset;
    
    // ptr padding for ps2 code
    u32 resolvedptr;
    
    if(groupEntCount == 0)        
        BoltGroupEnt groupEntries[0x100] @ groupOffset;
    else
        BoltGroupEnt groupEntries[groupEntCount] @ groupOffset;
};

BoltHdr hdr @0;
BoltGroupDesc groupDescs[hdr.groupCount] @ $;