[PATCH] D118331: [llvm-objdump][macho] Add initial --chained_fixups support

[Kaining Zhong via Phabricator via llvm-commits]

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iOS15 introduces fixup chain to speeds up the dynamic linking process; when building application targeting OS higher than iOS15 / macOS12, Mach-O uses fixup chain in replacement of rebase / binding information, to instruct dyld how to link dynamic libraries. This option aims to behave like the -chained_fixups option of MacOS's otool-classic, which dumps structs related to fixup chain in Mach-O object files, including dyld_chained_fixups_header, dyld_chained_starts_in_image, dyld_chained_starts_in_segment and dyld_chained_import[_addend][64].


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D118331

Files:
  llvm/include/llvm/BinaryFormat/MachO.h
  llvm/test/tools/llvm-objdump/MachO/Inputs/macho-fixup-chain
  llvm/test/tools/llvm-objdump/MachO/chained_fixups_dump.test
  llvm/tools/llvm-objdump/MachODump.cpp
  llvm/tools/llvm-objdump/MachODump.h
  llvm/tools/llvm-objdump/ObjdumpOpts.td
  llvm/tools/llvm-objdump/llvm-objdump.cpp

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