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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