bin-graph-section.sh

#!/bin/sh

# Parse the output of `readelf', and use the offsets of the specified section
# as arguments for `bin-graph'.

if [ $# -lt 3 ]; then
    echo "Usage: $0 SECTION [OPTIONS...] INPUT OUTPUT.png"
    exit 1
fi

input_section=$1
input_file=${@: -2:1}

readelf_output=$(readelf --sections --wide "$input_file" | grep --fixed-strings "$input_section" | head -n 1 | tr -s ' ')

if [ -z "$readelf_output" ]; then
    echo "Section \"$input_section\" not found"
    exit 1
fi

section_name=$(echo "$readelf_output" | cut -d ' ' -f 3)
echo "Section name: $section_name"

offset_start_str=$(echo "$readelf_output" | cut -d ' ' -f 6)
offset_start=$(printf '%x' "0x$offset_start_str")
echo "Start offset: 0x$offset_start"

section_size=$(echo "$readelf_output" | cut -d ' ' -f 7)
offset_end=$(printf '%x' $((0x$offset_start + 0x$section_size + 1)))
echo "End offset: 0x$offset_end"

bin_graph_cmd="./bin-graph --offset-start $offset_start --offset-end $offset_end ${@:2}"
echo "Running: $bin_graph_cmd"
$($bin_graph_cmd)