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#! /bin/sh
# Wrapper around gcc to add the .gdb_index section when running the testsuite.
# Copyright (C) 2010 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This program requires gdb and objcopy in addition to gcc.
# The default values are gdb from the build tree and objdump from $PATH.
# They may be overridden by setting environment variables GDB and OBJDUMP
# respectively.
# We assume the current directory is either $obj/gdb or $obj/gdb/testsuite.
#
# Example usage:
#
# bash$ cd $objdir/gdb/testsuite
# bash$ runtest \
# CC_FOR_TARGET="/bin/sh $srcdir/cc-with-index.sh gcc" \
# CXX_FOR_TARGET="/bin/sh $srcdir/cc-with-index.sh g++"
#
# For documentation on index files: info -f gdb.info -n "Index Files"
myname=cc-with-index.sh
if [ -z "$GDB" ]
then
if [ -f ./gdb ]
then
GDB="./gdb"
elif [ -f ../gdb ]
then
GDB="../gdb"
else
echo "$myname: unable to find usable gdb" >&2
exit 1
fi
fi
OBJCOPY=${OBJCOPY:-objcopy}
have_link=unknown
next_is_output_file=no
output_file=a.out
for arg in "$@"
do
if [ "$next_is_output_file" = "yes" ]
then
output_file="$arg"
next_is_output_file=no
continue
fi
# Poor man's gcc argument parser.
# We don't need to handle all arguments, we just need to know if we're
# doing a link and what the output file is.
# It's not perfect, but it seems to work well enough for the task at hand.
case "$arg" in
"-c") have_link=no ;;
"-E") have_link=no ;;
"-S") have_link=no ;;
"-o") next_is_output_file=yes ;;
esac
done
if [ "$next_is_output_file" = "yes" ]
then
echo "$myname: Unable to find output file" >&2
exit 1
fi
if [ "$have_link" = "no" ]
then
"$@"
exit $?
fi
index_file="${output_file}.gdb-index"
if [ -f "$index_file" ]
then
echo "$myname: Index file $index_file exists, won't clobber." >&2
exit 1
fi
output_dir="${output_file%/*}"
[ "$output_dir" = "$output_file" ] && output_dir="."
"$@"
rc=$?
[ $rc != 0 ] && exit $rc
if [ ! -f "$output_file" ]
then
echo "$myname: Internal error: $output_file missing." >&2
exit 1
fi
$GDB --batch-silent -nx -ex "file $output_file" -ex "save gdb-index $output_dir"
rc=$?
[ $rc != 0 ] && exit $rc
# GDB might not always create an index. Cope.
if [ -f "$index_file" ]
then
$OBJCOPY --add-section .gdb_index="$index_file" \
--set-section-flags .gdb_index=readonly \
"$output_file" "$output_file"
rc=$?
else
rc=0
fi
rm -f "$index_file"
exit $rc
|
