Function add

system/lib/libunwind/src/FrameHeaderCache.hpp:122–146

  }

  void add(const UnwindInfoSections *UIS) {
    CacheEntry *Current = nullptr;

    if (Unused != nullptr) {
      Current = Unused;
      Unused = Unused->Next;
    } else {
      Current = MostRecentlyUsed;
      CacheEntry *Previous = nullptr;
      while (Current->Next != nullptr) {
        Previous = Current;
        Current = Current->Next;
      }
      Previous->Next = nullptr;
      _LIBUNWIND_FRAMEHEADERCACHE_TRACE("FrameHeaderCache evict [%lx - %lx)",
                                        Current->LowPC(), Current->HighPC());
    }

    Current->Info = *UIS;
    Current->Next = MostRecentlyUsed;
    MostRecentlyUsed = Current;
    _LIBUNWIND_FRAMEHEADERCACHE_TRACE("FrameHeaderCache add [%lx - %lx)",
                                      MostRecentlyUsed->LowPC(),
                                      MostRecentlyUsed->HighPC());
  }
};

#endif // __FRAMEHEADER_CACHE_HPP__