annotate contrib/compare-debug @ 55:77e2b8dfacca gcc-4.4.5

update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents 855418dad1a3
children f6334be47118
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #! /bin/sh
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2
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3 # Compare stripped copies of two given object files.
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4
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5 # Copyright (C) 2007, 2008, 2009 Free Software Foundation
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6 # Originally by Alexandre Oliva <aoliva@redhat.com>
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7
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8 # This file is part of GCC.
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9
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10 # GCC is free software; you can redistribute it and/or modify it under
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11 # the terms of the GNU General Public License as published by the Free
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12 # Software Foundation; either version 3, or (at your option) any later
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13 # version.
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14
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15 # GCC is distributed in the hope that it will be useful, but WITHOUT
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16 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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17 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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18 # License for more details.
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19
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20 # You should have received a copy of the GNU General Public License
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21 # along with GCC; see the file COPYING3. If not see
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22 # <http://www.gnu.org/licenses/>.
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23
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24 rm='rm -f'
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25
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26 case $1 in
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27 -p | --preserve)
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28 rm='echo preserving'
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29 shift
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30 ;;
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31 esac
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32
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33 if test $# != 2; then
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34 echo 'usage: compare-debug file1.o file2.o' >&2
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35 exit 1
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36 fi
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37
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38 if test ! -f "$1"; then
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39 echo "$1" does not exist >&2
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40 exit 1
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41 fi
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42
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43 if test ! -f "$2"; then
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44 echo "$2" does not exist >&2
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45 exit 1
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46 fi
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47
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48 suf1=stripped
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49 while test -f "$1.$suf1"; do
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50 suf1=$suf1.
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51 done
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52
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53 suf2=stripped
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54 while test -f "$2.$suf2"; do
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55 suf2=$suf2.
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56 done
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57
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58 trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15
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59
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60 case `uname -s` in
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61 Darwin)
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62 ld -S -x -r -no_uuid "$1" -o "$1.$suf1"
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63 ld -S -x -r -no_uuid "$2" -o "$2.$suf2"
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64 ;;
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65 *)
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66 cp "$1" "$1.$suf1"
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67 strip "$1.$suf1"
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68
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69 cp "$2" "$2.$suf2"
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70 strip "$2.$suf2"
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71 ;;
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72 esac
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73
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74 if cmp "$1.$suf1" "$2.$suf2"; then
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75 status=0
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76 else
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77 status=1
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78
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79 # Assembler-generated CFI will add an .eh_frame section for -g not
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80 # present in -g0. Try to cope with it by checking that an .eh_frame
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81 # section is present in either object file, and then stripping it
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82 # off before re-comparing.
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83
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84 cmd=
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85 cmp1=
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86 cmp2=
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87
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88 for t in objdump readelf eu-readelf; do
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89 if ($t --help) 2>&1 | grep ' --\[*section-\]*headers' > /dev/null; then
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90 cmd=$t
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91
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92 $cmd --section-headers "$1.$suf1" | grep '\.eh_frame' > /dev/null
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93 cmp1=$?
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94
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95 $cmd --section-headers "$2.$suf2" | grep '\.eh_frame' > /dev/null
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96 cmp2=$?
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97
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98 break
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99 fi
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100 done
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101
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102 # If we found .eh_frame in one but not the other, or if we could not
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103 # find a command to tell, try to strip off the .eh_frame section
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104 # from both.
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105 if test "x$cmp1" != "x$cmp2" || test "x$cmd" = "x"; then
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106 suf3=$suf1.
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107 while test -f "$1.$suf3"; do
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108 suf3=$suf3.
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109 done
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110
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111 suf4=$suf2.
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112 while test -f "$2.$suf4"; do
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113 suf4=$suf4.
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114 done
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115
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116 trap 'rm -f "$1.$suf1" "$2.$suf2" "$1.$suf3" "$2.$suf4"' 0 1 2 15
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117
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118 echo stripping off .eh_frame, then retrying >&2
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119
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120 if (objcopy -v) 2>&1 | grep ' --remove-section' > /dev/null; then
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121 objcopy --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$1.$suf1" "$1.$suf3"
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122 mv "$1.$suf3" "$1.$suf1"
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123
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124 objcopy --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$2.$suf2" "$2.$suf4"
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125 mv "$2.$suf4" "$2.$suf2"
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126 elif (strip --help) 2>&1 | grep ' --remove-section' > /dev/null; then
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127 cp "$1.$suf1" "$1.$suf3"
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128 strip --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$1.$suf3"
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129 mv "$1.$suf3" "$1.$suf1"
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130
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131 cp "$2.$suf2" "$2.$suf4"
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132 strip --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$2.$suf4"
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133 mv "$2.$suf4" "$2.$suf2"
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134 else
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135 echo failed to strip off .eh_frame >&2
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136 fi
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137
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138 trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15
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139
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140 if cmp "$1.$suf1" "$2.$suf2"; then
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141 status=0
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142 else
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143 status=1
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144 fi
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145 fi
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146 fi
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147
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148 $rm "$1.$suf1" "$2.$suf2"
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149
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150 trap "exit $status; exit" 0 1 2 15
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151
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152 if test -f "$1".gkd || test -f "$2".gkd; then
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153 if cmp "$1".gkd "$2".gkd; then
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154 :
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155 else
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156 status=$?
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 36
diff changeset
157 fi
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 36
diff changeset
158 fi
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents: 36
diff changeset
159
0
a06113de4d67 first commit
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff changeset
160 exit $status