| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0-only |
| # Copyright © 2019 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| # Use pfunct to produce compilable output from a object, then do a codiff -s |
| # To see if the type information generated from source code generated |
| # from type information in a file compiled from the original source code matches. |
| |
| if [ $# -eq 0 ] ; then |
| echo "Usage: fullcircle <filename_with_type_info>" |
| exit 1 |
| fi |
| |
| file=$1 |
| |
| nr_cus=$(readelf -wi ${file} | grep DW_TAG_compile_unit | wc -l) |
| if [ $nr_cus -gt 1 ]; then |
| exit 0 |
| fi |
| |
| c_output=$(mktemp /tmp/fullcircle.XXXXXX.c) |
| o_output=$(mktemp /tmp/fullcircle.XXXXXX.o) |
| pfunct_bin=${PFUNCT-"pfunct"} |
| codiff_bin=${CODIFF-"codiff"} |
| |
| # See how your DW_AT_producer looks like and find the |
| # right regexp to get after the GCC version string, this one |
| # seems good enough for Red Hat/Fedora/CentOS that look like: |
| # |
| # DW_AT_producer : (indirect string, offset: 0x3583): GNU C89 8.2.1 20181215 (Red Hat 8.2.1-6) -mno-sse -mno-mmx |
| # |
| # So we need from -mno-sse onwards |
| |
| CFLAGS=$(readelf -wi $file | grep -w DW_AT_producer | sed -r 's/.*\)( -[[:alnum:]]+.*)+/\1/g') |
| |
| # Check if we managed to do the sed or if this is something like GNU AS |
| [ "${CFLAGS/DW_AT_producer/}" != "${CFLAGS}" ] && exit |
| |
| ${pfunct_bin} --compile $file > $c_output |
| gcc $CFLAGS -c -g $c_output -o $o_output |
| ${codiff_bin} -q -s $file $o_output |
| |
| rm -f $c_output $o_output |
| exit 0 |
