By default, the start_ip_offset in libunwind's table_entry struct is relative to the unw_dyn_info_t's segbase. This presents a problem for us in conjunction with using LLVM's MCJIT because it likes to spread text sections and the corresponding eh_frame sections quite far apart. This represents my attempt to support this use case in the simplest manner that is backwards compatible, by adding a new format kind (UNW_INFO_FORMAT_REMOTE_TABLE2) that indicates that the `start_ip_offset` should be interpreted as relative to `start_ip` rather than segbase.
0001-Add-an-option-to-have-start_ip_offset-be-relative-to.patch
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