[PATCH] D94956: [yaml2obj/obj2yaml] - Improve dumping/creating of ELF versioning sections.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jhenderson, MaskRay.
Herald added subscribers: rupprecht, hiraditya, emaste.
Herald added a reviewer: espindola.
grimar requested review of this revision.
Herald added a project: LLVM.

This makes the following improvements.

For `SHT_GNU_versym`:

- yaml2obj: set `sh_link` to index of `.dynsym` section automatically.

For `SHT_GNU_verdef`:

- yaml2obj: set `sh_link` to index of `.dynstr` section automatically.
- yaml2obj: set `sh_info` field automatically.
- obj2yaml: don't dump the `Info` field when its value matches the number of version definitions.

For `SHT_GNU_verneed`:

- yaml2obj: set `sh_link` to index of `.dynstr` section automatically.
- yaml2obj: set `sh_info` field automatically.
- obj2yaml: don't dump the `Info` field when its value matches the number of version dependencies.

Also, simplifies few test cases.


https://reviews.llvm.org/D94956

Files:
  lld/test/ELF/invalid/verneed-shared.test
  llvm/include/llvm/ObjectYAML/ELFYAML.h
  llvm/lib/ObjectYAML/ELFEmitter.cpp
  llvm/lib/ObjectYAML/ELFYAML.cpp
  llvm/test/Object/invalid.test
  llvm/test/tools/llvm-objdump/ELF/verdef.test
  llvm/test/tools/llvm-objdump/ELF/verneed.test
  llvm/test/tools/llvm-readobj/ELF/all.test
  llvm/test/tools/llvm-readobj/ELF/dyn-symbols.test
  llvm/test/tools/llvm-readobj/ELF/hidden-versym.test
  llvm/test/tools/llvm-readobj/ELF/merged.test
  llvm/test/tools/llvm-readobj/ELF/reloc-symbol-with-versioning.test
  llvm/test/tools/llvm-readobj/ELF/section-types.test
  llvm/test/tools/llvm-readobj/ELF/verdef-invalid.test
  llvm/test/tools/llvm-readobj/ELF/verneed-flags.yaml
  llvm/test/tools/llvm-readobj/ELF/verneed-invalid.test
  llvm/test/tools/llvm-readobj/ELF/versioninfo.test
  llvm/test/tools/llvm-readobj/ELF/versym-invalid.test
  llvm/test/tools/obj2yaml/ELF/verdef-section.yaml
  llvm/test/tools/obj2yaml/ELF/verneed-section.yaml
  llvm/test/tools/yaml2obj/ELF/override-shname.yaml
  llvm/test/tools/yaml2obj/ELF/override-shoffset.yaml
  llvm/test/tools/yaml2obj/ELF/override-shsize.yaml
  llvm/test/tools/yaml2obj/ELF/override-shtype.yaml
  llvm/test/tools/yaml2obj/ELF/verdef-section.yaml
  llvm/test/tools/yaml2obj/ELF/verneed-section.yaml
  llvm/test/tools/yaml2obj/ELF/versym-section.yaml
  llvm/tools/obj2yaml/elf2yaml.cpp

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