blob: e8e8ff007452b1ac4693e2f2f666eeb973266630 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#! /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 $srcdir/gdb/contrib/cc-with-tweaks.sh ARGS g++"
#
# For documentation on index files: info -f gdb.info -n "Index Files"
# For information about 'dwz', see the announcement:
# http://gcc.gnu.org/ml/gcc/2012-04/msg00686.html
# (More documentation is to come.)
# ARGS determine what is done. They can be:
# -Z invoke objcopy --compress-debug-sections
# -z compress using dwz
# -m compress using dwz -m
# -i make an index
# If nothing is given, no changes are made
myname=cc-with-tweaks.sh
if [ -z "$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)
$DWP -o "${output_file}.dwp" ${dwo_files} > /dev/null
rm -f ${dwo_files}
fi
rm -f "$index_file"
exit $rc
|
