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-rw-r--r--src/core/loader/3dsx.cpp40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/core/loader/3dsx.cpp b/src/core/loader/3dsx.cpp
index 530837d08..111b6a409 100644
--- a/src/core/loader/3dsx.cpp
+++ b/src/core/loader/3dsx.cpp
@@ -62,6 +62,10 @@ struct THREEDSX_Header
// Sizes of the code, rodata and data segments +
// size of the BSS section (uninitialized latter half of the data segment)
u32 code_seg_size, rodata_seg_size, data_seg_size, bss_size;
+ // offset and size of smdh
+ u32 smdh_offset, smdh_size;
+ // offset to filesystem
+ u32 fs_offset;
};
// Relocation header: all fields (even extra unknown fields) are guaranteed to be relocation counts.
@@ -267,4 +271,40 @@ ResultStatus AppLoader_THREEDSX::Load() {
return ResultStatus::Success;
}
+ResultStatus AppLoader_THREEDSX::ReadRomFS(std::shared_ptr<FileUtil::IOFile>& romfs_file, u64& offset, u64& size) {
+ if (!file.IsOpen())
+ return ResultStatus::Error;
+
+ // Reset read pointer in case this file has been read before.
+ file.Seek(0, SEEK_SET);
+
+ THREEDSX_Header hdr;
+ if (file.ReadBytes(&hdr, sizeof(THREEDSX_Header)) != sizeof(THREEDSX_Header))
+ return ResultStatus::Error;
+
+ if (hdr.header_size != sizeof(THREEDSX_Header))
+ return ResultStatus::Error;
+
+ // Check if the 3DSX has a RomFS...
+ if (hdr.fs_offset != 0) {
+ u32 romfs_offset = hdr.fs_offset;
+ u32 romfs_size = file.GetSize() - hdr.fs_offset;
+
+ LOG_DEBUG(Loader, "RomFS offset: 0x%08X", romfs_offset);
+ LOG_DEBUG(Loader, "RomFS size: 0x%08X", romfs_size);
+
+ // We reopen the file, to allow its position to be independent from file's
+ romfs_file = std::make_shared<FileUtil::IOFile>(filepath, "rb");
+ if (!romfs_file->IsOpen())
+ return ResultStatus::Error;
+
+ offset = romfs_offset;
+ size = romfs_size;
+
+ return ResultStatus::Success;
+ }
+ LOG_DEBUG(Loader, "3DSX has no RomFS");
+ return ResultStatus::ErrorNotUsed;
+}
+
} // namespace Loader