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go/doc/next/6-stdlib/99-minor/debug/elf/63952.md
benbaker76 2e97c30d8d debug/elf: add SHT_GNU_VERDEF section parsing 
Fixes #63952

Change-Id: Icf93e57e62243d9c3306d4e1c5dadb3f62747710
GitHub-Last-Rev: 5c2952760063474f3aac338fe5bdb65bde238ab6
GitHub-Pull-Request: golang/go#69850
Reviewed-on: https://go-review.googlesource.com/c/go/+/619077
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-11-07 15:23:24 +00:00

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The [debug/elf] package adds several new constants, types, and methods to add support for handling dynamic versions and version flags in ELF (Executable and Linkable Format) files:

Several new types have been introduced:

  • [DynamicVersion] struct represents a dynamic version entry in the ELF file.
  • [DynamicVersionDep] struct represents a dependency of a dynamic version.
  • [DynamicVersionNeed] struct represents a required dynamic version in the ELF file.
  • [DynamicVersionFlag] is a new type defined as uint16, representing flags for dynamic versions.
    • [VER_FLG_BASE] version definition of the file.
    • [VER_FLG_WEAK] weak version identifier.
    • [VER_FLG_INFO] reference exists for informational purposes.
  • [SymbolVersionFlag] is a new type defined as uint8, representing version flags for ELF symbols.
    • [VerFlagNone] no flags.
    • [VerFlagLocal] symbol has local scope.
    • [VerFlagGlobal] symbol has global scope.
    • [VerFlagHidden] symbol is hidden.

The following methods have been added:

  • [File.DynamicVersionNeeds] method returns a list of dynamic version needs in the ELF file, representing dependencies required by the executable.
  • [File.DynamicVersions] retrieves a list of dynamic versions defined in the ELF file.