Data structure used to mark where a fixup in code or data is necessary.
Fixups are generally resolved during machine code generation. For example if a branch instruction is used to jump to a label, which hasn't been bound yet, a fixup is created. However, when such label is bound, the fixup is processed and removed from a list of fixups.
Section where the fixup comes from.
Label id, relocation id, or Globals::kInvalidId.
Fixup that is used with a LabelEntry always uses relocation id here, however, when a fixup is turned into unresolved and generally detached from LabelEntry, this field becomes a label identifier as unresolved fixups won't reference a relocation. This is just a space optimization.
Label offset relative to the start of the section where the unresolved link comes from.
Inlined rel8/rel32.
Offset format information.
