34 lines
1.0 KiB
Bash
Executable File
34 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0-only
|
|
# Copyright © 2019 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
# Use pahole to produce output from BTF and from DWARF, then do a diff
|
|
# Use --flat_arrays with DWARF as BTF, like CTF, flattens arrays.
|
|
# Use --show_private_classes as BTF shows all structs, while pahole knows
|
|
# if some struct is defined only inside another struct/class or in a function,
|
|
# this information is not available when loading from BTF.
|
|
|
|
if [ $# -eq 0 ] ; then
|
|
echo "Usage: btfdiff <filename_with_BTF_and_DWARF_info>"
|
|
exit 1
|
|
fi
|
|
|
|
file=$1
|
|
btf_output=$(mktemp /tmp/btfdiff.btf.XXXXXX)
|
|
dwarf_output=$(mktemp /tmp/btfdiff.dwarf.XXXXXX)
|
|
pahole_bin=${PAHOLE-"pahole"}
|
|
|
|
${pahole_bin} -F dwarf \
|
|
--flat_arrays \
|
|
--suppress_aligned_attribute \
|
|
--suppress_force_paddings \
|
|
--suppress_packed \
|
|
--show_private_classes $file > $dwarf_output
|
|
${pahole_bin} -F btf \
|
|
--suppress_packed \
|
|
$file > $btf_output
|
|
|
|
diff -up $dwarf_output $btf_output
|
|
|
|
rm -f $btf_output $dwarf_output
|
|
exit 0
|