[Bug tools/29150] New: Would be useful to have a filter in eu-readelf like --name=<function>

[Bug tools/29150] New: Would be useful to have a filter in eu-readelf like --name=<function>

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29150

            Bug ID: 29150
           Summary: Would be useful to have a filter in eu-readelf like
                    --name=<function>
           Product: elfutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tools
          Assignee: unassigned at sourceware dot org
          Reporter: mark at klomp dot org
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

Copied from https://bugzilla.redhat.com/show_bug.cgi?id=1980026

For large executables like the linux kernel the human readable output of
eu-readelf could be in the gigabytes.  llvm-dwarfdump has --name=<symbol_name>
that allows the output to be limited to just DIEs with that symbol name.  So to
see the DIEs and their children (-c) of function trace_event_name for kernel
can do the following which is about 40K of output:

llvm-dwarfdump  -c --name=trace_event_name
/usr/lib/debug/lib/modules/5.12.7-300.fc34.x86_64/vmlinux >
trace_event_name.dwarf

Much easier to inspect 40KB of text than 4.8GB of the entire output from
llvm-dwarfdump.  Would be nice if eu-readelf had similar filter for
--debug-dump=info and ability to select whether to print children DIEs.

Documentation about the llvm-dwarfdump options is at
https://llvm.org/docs/CommandGuide/llvm-dwarfdump.html .

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[Bug tools/29150] Would be useful to have a filter in eu-readelf like --name=<function>

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29150

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tromey at sourceware dot org

--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
dwgrep can do this and way, way more.

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