GDB 7.6.50

gdb/contrib/cc-with-tweaks.sh

Index: gdb/contrib/cc-with-tweaks.sh
diff --git a/gdb/contrib/cc-with-tweaks.sh b/gdb/contrib/cc-with-tweaks.sh
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+#! /bin/sh
+# Wrapper around gcc to tweak the output in various ways when running
+# the testsuite.
+
+# Copyright (C) 2010-2013 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 objcopy from $PATH.
+# They may be overridden by setting environment variables GDB and OBJCOPY
+# respectively.  Note that GDB should contain the gdb binary as well as the
+# -data-directory flag, e.g., "foo/gdb -data-directory foo/data-directory".
+# 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/gdb/contrib/cc-with-tweaks.sh ARGS gcc" \
+#   CXX_FOR_TARGET="/bin/sh $srcdir/gdb/contrib/cc-with-tweaks.sh ARGS g++"
+#
+# For documentation on Fission and dwp files:
+#     http://gcc.gnu.org/wiki/DebugFission
+#     http://gcc.gnu.org/wiki/DebugFissionDWP
+# For documentation on index files: info -f gdb.info -n "Index Files"
+# For information about 'dwz', see the announcement:
+#     http://gcc.gnu.org/ml/gcc/2012-04/msg00686.html
+# (More documentation is to come.)
+
+# ARGS determine what is done.  They can be:
+# -Z invoke objcopy --compress-debug-sections
+# -z compress using dwz
+# -m compress using dwz -m
+# -i make an index
+# -p create .dwp files (Fission), you need to also use gcc option -gsplit-dwarf
+# If nothing is given, no changes are made
+
+myname=cc-with-tweaks.sh
+
+if [ -z "$GDB" ]
+then
+    if [ -f ./gdb ]
+    then
+	GDB="./gdb -data-directory data-directory"
+    elif [ -f ../gdb ]
+    then
+	GDB="../gdb -data-directory ../data-directory"
+    elif [ -f ../../gdb ]
+    then
+	GDB="../../gdb -data-directory ../../data-directory"
+    else
+	echo "$myname: unable to find usable gdb" >&2
+	exit 1
+    fi
+fi
+
+OBJCOPY=${OBJCOPY:-objcopy}
+READELF=${READELF:-readelf}
+
+DWZ=${DWZ:-dwz}
+DWP=${DWP:-dwp}
+
+have_link=unknown
+next_is_output_file=no
+output_file=a.out
+
+want_index=false
+want_dwz=false
+want_multi=false
+want_dwp=false
+want_objcopy_compress=false
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+	-Z) want_objcopy_compress=true ;;
+	-z) want_dwz=true ;;
+	-i) want_index=true ;;
+	-m) want_multi=true ;;
+	-p) want_dwp=true ;;
+	*) break ;;
+    esac
+    shift
+done
+
+for arg in "$@"
+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 [ "$want_index" = true ] && [ -f "$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: $output_file missing." >&2
+    exit 1
+fi
+
+if [ "$want_objcopy_compress" = true ]; then
+    $OBJCOPY --compress-debug-sections "$output_file"
+    rc=$?
+    [ $rc != 0 ] && exit $rc
+fi
+
+if [ "$want_index" = true ]; then
+    $GDB --batch-silent -nx -ex "set auto-load no" -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
+    [ $rc != 0 ] && exit $rc
+fi
+
+if [ "$want_dwz" = true ]; then
+    $DWZ "$output_file" > /dev/null 2>&1
+elif [ "$want_multi" = true ]; then
+    cp $output_file ${output_file}.alt
+    $DWZ -m ${output_file}.dwz "$output_file" ${output_file}.alt > /dev/null 2>&1
+fi
+
+if [ "$want_dwp" = true ]; then
+    dwo_files=$($READELF -wi "${output_file}" | grep _dwo_name | \
+	sed -e 's/^.*: //' | sort | uniq)
+    rc=0
+    if [ -n "$dwo_files" ]; then
+	$DWP -o "${output_file}.dwp" ${dwo_files} > /dev/null
+	rc=$?
+	[ $rc != 0 ] && exit $rc
+	rm -f ${dwo_files}
+    fi
+fi
+
+rm -f "$index_file"
+exit $rc