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#!/usr/bin/env bash
# build-aux/lint-bin - Lint final binary images
#
# Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com>
# SPDX-License-Identifier: AGPL-3.0-or-later
set -euE -o pipefail
# Output is a series of lines in the format "symbol location size
# source". Whitespace may seem silly.
objdump_globals() {
sed -E -n '/^ \.t?(data|bss)\./{ / 0x/{ p; D; }; N; s/\n/ /; p; }' <"$1"
}
lint_globals() {
local in_mapfile
in_mapfile=$1
local rel_base
rel_base=${in_mapfile#build/*/}
rel_base=${rel_base%/*}
local topdir
topdir=$PWD
{
echo 'Source Symbol Size'
objdump_globals "$in_mapfile" |
{
cd "$rel_base"
total=0
while read -r symbol addr size source; do
: "$addr"
case "$source" in
/*)
# libg.a(whatever.o) -> libg.a
source="${source%(*)}"
# resolve `..` components
source="$(realpath --canonicalize-missing --no-symlinks -- "$source")"
;;
CMakeFiles/*.dir/*.obj)
# CMakeFiles/sbc_harnes_objs.dir/...
source="${source#CMakeFiles/*.dir/}"
source="${source%.obj}"
source="${source//__/..}"
source="$(realpath --canonicalize-missing --no-symlinks --relative-to="$topdir" -- "$source")"
;;
esac
printf '%s %s 0x%04x\n' "$source" "$symbol" "$size"
total=$((total + size))
done
printf '~ Total 0x%04x\n' "$total"
} |
LC_COLLATE=C sort
} | column -t
}
main() {
echo 'Global variables:'
lint_globals 'build/rp2040-Release/cmd/sbc_harness/sbc_harness.elf.map' | sed 's/^/ /'
}
main "$@"
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