[llvm] [Object] Beginnings of SFrame parser and dumper (PR #147294)

[Pavel Labath via llvm-commits]

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@@ -62,6 +62,8 @@ def memtag : FF<"memtag", "Display memory tagging metadata (modes, Android notes
 def needed_libs : FF<"needed-libs", "Display the needed libraries">, Group<grp_elf>;
 def notes : FF<"notes", "Display notes">, Group<grp_elf>;
 def program_headers : FF<"program-headers", "Display program headers">, Group<grp_elf>;
+def sframe_EQ : Joined<["--"], "sframe=">, HelpText<"Display SFrame section <name>">, MetaVarName<"<name>">, Group<grp_elf>;
+def sframe: FF<"sframe", "Alias for --sframe=.sframe">, Alias<sframe_EQ>, AliasArgs<[".sframe"]>, Group<grp_elf>;
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labath wrote:

I guess it would be possible to do something like checking whether the file contains *any* SHT_GNU_SFRAME sections first. If so, then --sframe dumps those -- otherwise we fall back to dumping the section called `.sframe`. 

Ideally, I'd let the GNU folks take the lead here. I'd be happy to implement the new behaviour once it has been agreed upon.

https://github.com/llvm/llvm-project/pull/147294