| 1 | #! /bin/sh |
| 2 | # Wrapper around gcc to add the .gdb_index section when running the testsuite. |
| 3 | |
| 4 | # Copyright (C) 2010-2012 Free Software Foundation, Inc. |
| 5 | # This program is free software; you can redistribute it and/or modify |
| 6 | # it under the terms of the GNU General Public License as published by |
| 7 | # the Free Software Foundation; either version 3 of the License, or |
| 8 | # (at your option) any later version. |
| 9 | # |
| 10 | # This program is distributed in the hope that it will be useful, |
| 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | # GNU General Public License for more details. |
| 14 | # |
| 15 | # You should have received a copy of the GNU General Public License |
| 16 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | # This program requires gdb and objcopy in addition to gcc. |
| 19 | # The default values are gdb from the build tree and objcopy from $PATH. |
| 20 | # They may be overridden by setting environment variables GDB and OBJCOPY |
| 21 | # respectively. |
| 22 | # We assume the current directory is either $obj/gdb or $obj/gdb/testsuite. |
| 23 | # |
| 24 | # Example usage: |
| 25 | # |
| 26 | # bash$ cd $objdir/gdb/testsuite |
| 27 | # bash$ runtest \ |
| 28 | # CC_FOR_TARGET="/bin/sh $srcdir/cc-with-index.sh gcc" \ |
| 29 | # CXX_FOR_TARGET="/bin/sh $srcdir/cc-with-index.sh g++" |
| 30 | # |
| 31 | # For documentation on index files: info -f gdb.info -n "Index Files" |
| 32 | |
| 33 | myname=cc-with-index.sh |
| 34 | |
| 35 | if [ -z "$GDB" ] |
| 36 | then |
| 37 | if [ -f ./gdb ] |
| 38 | then |
| 39 | GDB="./gdb" |
| 40 | elif [ -f ../gdb ] |
| 41 | then |
| 42 | GDB="../gdb" |
| 43 | elif [ -f ../../gdb ] |
| 44 | then |
| 45 | GDB="../../gdb" |
| 46 | else |
| 47 | echo "$myname: unable to find usable gdb" >&2 |
| 48 | exit 1 |
| 49 | fi |
| 50 | fi |
| 51 | |
| 52 | OBJCOPY=${OBJCOPY:-objcopy} |
| 53 | |
| 54 | have_link=unknown |
| 55 | next_is_output_file=no |
| 56 | output_file=a.out |
| 57 | |
| 58 | for arg in "$@" |
| 59 | do |
| 60 | if [ "$next_is_output_file" = "yes" ] |
| 61 | then |
| 62 | output_file="$arg" |
| 63 | next_is_output_file=no |
| 64 | continue |
| 65 | fi |
| 66 | |
| 67 | # Poor man's gcc argument parser. |
| 68 | # We don't need to handle all arguments, we just need to know if we're |
| 69 | # doing a link and what the output file is. |
| 70 | # It's not perfect, but it seems to work well enough for the task at hand. |
| 71 | case "$arg" in |
| 72 | "-c") have_link=no ;; |
| 73 | "-E") have_link=no ;; |
| 74 | "-S") have_link=no ;; |
| 75 | "-o") next_is_output_file=yes ;; |
| 76 | esac |
| 77 | done |
| 78 | |
| 79 | if [ "$next_is_output_file" = "yes" ] |
| 80 | then |
| 81 | echo "$myname: Unable to find output file" >&2 |
| 82 | exit 1 |
| 83 | fi |
| 84 | |
| 85 | if [ "$have_link" = "no" ] |
| 86 | then |
| 87 | "$@" |
| 88 | exit $? |
| 89 | fi |
| 90 | |
| 91 | index_file="${output_file}.gdb-index" |
| 92 | if [ -f "$index_file" ] |
| 93 | then |
| 94 | echo "$myname: Index file $index_file exists, won't clobber." >&2 |
| 95 | exit 1 |
| 96 | fi |
| 97 | |
| 98 | output_dir="${output_file%/*}" |
| 99 | [ "$output_dir" = "$output_file" ] && output_dir="." |
| 100 | |
| 101 | "$@" |
| 102 | rc=$? |
| 103 | [ $rc != 0 ] && exit $rc |
| 104 | if [ ! -f "$output_file" ] |
| 105 | then |
| 106 | echo "$myname: Internal error: $output_file missing." >&2 |
| 107 | exit 1 |
| 108 | fi |
| 109 | |
| 110 | $GDB --batch-silent -nx -ex "file $output_file" -ex "save gdb-index $output_dir" |
| 111 | rc=$? |
| 112 | [ $rc != 0 ] && exit $rc |
| 113 | |
| 114 | # GDB might not always create an index. Cope. |
| 115 | if [ -f "$index_file" ] |
| 116 | then |
| 117 | $OBJCOPY --add-section .gdb_index="$index_file" \ |
| 118 | --set-section-flags .gdb_index=readonly \ |
| 119 | "$output_file" "$output_file" |
| 120 | rc=$? |
| 121 | else |
| 122 | rc=0 |
| 123 | fi |
| 124 | |
| 125 | rm -f "$index_file" |
| 126 | exit $rc |