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comparison contrib/compare-debug @ 67:f6334be47118

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update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
date Tue, 22 Mar 2011 17:18:12 +0900
parents 77e2b8dfacca
children 04ced10e8804
comparison
equal deleted inserted replaced
65:65488c3d617d 67:f6334be47118
1 #! /bin/sh 1 #! /bin/sh
2 2
3 # Compare stripped copies of two given object files. 3 # Compare stripped copies of two given object files.
4 4
5 # Copyright (C) 2007, 2008, 2009 Free Software Foundation 5 # Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation
6 # Originally by Alexandre Oliva <aoliva@redhat.com> 6 # Originally by Alexandre Oliva <aoliva@redhat.com>
7 7
8 # This file is part of GCC. 8 # This file is part of GCC.
9 9
10 # GCC is free software; you can redistribute it and/or modify it under 10 # GCC is free software; you can redistribute it and/or modify it under
57 57
58 trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15 58 trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15
59 59
60 case `uname -s` in 60 case `uname -s` in
61 Darwin) 61 Darwin)
62 ld -S -x -r -no_uuid "$1" -o "$1.$suf1" 62 # The strip command on darwin does not remove all debug info.
63 ld -S -x -r -no_uuid "$2" -o "$2.$suf2" 63 # Fortunately, we can use ld to do it instead.
64 ld -S -r -no_uuid "$1" -o "$1.$suf1"
65 ld -S -r -no_uuid "$2" -o "$2.$suf2"
64 ;; 66 ;;
65 *) 67 *)
66 cp "$1" "$1.$suf1" 68 cp "$1" "$1.$suf1"
67 strip "$1.$suf1" 69 strip "$1.$suf1"
68 70
98 break 100 break
99 fi 101 fi
100 done 102 done
101 103
102 # If we found .eh_frame in one but not the other, or if we could not 104 # If we found .eh_frame in one but not the other, or if we could not
103 # find a command to tell, try to strip off the .eh_frame section 105 # find a command to tell, or if there are LTO sections, try to strip
104 # from both. 106 # off the .eh_frame and LTO sections from both.
105 if test "x$cmp1" != "x$cmp2" || test "x$cmd" = "x"; then 107 if test "x$cmp1" != "x$cmp2" || test "x$cmd" = "x" ||
108 $cmd --section-headers "$1.$suf1" | grep '.gnu.lto_' > /dev/null ||
109 $cmd --section-headers "$2.$suf2" | grep '.gnu.lto_' > /dev/null ; then
106 suf3=$suf1. 110 suf3=$suf1.
107 while test -f "$1.$suf3"; do 111 while test -f "$1.$suf3"; do
108 suf3=$suf3. 112 suf3=$suf3.
109 done 113 done
110 114
113 suf4=$suf4. 117 suf4=$suf4.
114 done 118 done
115 119
116 trap 'rm -f "$1.$suf1" "$2.$suf2" "$1.$suf3" "$2.$suf4"' 0 1 2 15 120 trap 'rm -f "$1.$suf1" "$2.$suf2" "$1.$suf3" "$2.$suf4"' 0 1 2 15
117 121
118 echo stripping off .eh_frame, then retrying >&2 122 echo stripping off .eh_frame and LTO sections, then retrying >&2
123
124 seclist=".eh_frame .rel.eh_frame .rela.eh_frame"
125 if test "x$cmd" != "x"; then
126 seclist="$seclist "`{ $cmd --section-headers "$1.$suf1"; $cmd --section-headers "$2.$suf2"; } | sed -n 's,.* \(\.gnu\.lto_[^ ]*\).*,\1,p' | sort -u`
127 fi
128 rsopts=`for sec in $seclist; do echo " --remove-section $sec"; done`
119 129
120 if (objcopy -v) 2>&1 | grep ' --remove-section' > /dev/null; then 130 if (objcopy -v) 2>&1 | grep ' --remove-section' > /dev/null; then
121 objcopy --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$1.$suf1" "$1.$suf3" 131 objcopy $rsopts "$1.$suf1" "$1.$suf3"
122 mv "$1.$suf3" "$1.$suf1" 132 mv "$1.$suf3" "$1.$suf1"
123 133
124 objcopy --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$2.$suf2" "$2.$suf4" 134 objcopy $rsopts "$2.$suf2" "$2.$suf4"
125 mv "$2.$suf4" "$2.$suf2" 135 mv "$2.$suf4" "$2.$suf2"
126 elif (strip --help) 2>&1 | grep ' --remove-section' > /dev/null; then 136 elif (strip --help) 2>&1 | grep ' --remove-section' > /dev/null; then
127 cp "$1.$suf1" "$1.$suf3" 137 cp "$1.$suf1" "$1.$suf3"
128 strip --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$1.$suf3" 138 strip $rsopts "$1.$suf3"
129 mv "$1.$suf3" "$1.$suf1" 139 mv "$1.$suf3" "$1.$suf1"
130 140
131 cp "$2.$suf2" "$2.$suf4" 141 cp "$2.$suf2" "$2.$suf4"
132 strip --remove-section .eh_frame --remove-section .rel.eh_frame --remove-section .rela.eh_frame "$2.$suf4" 142 strip $rsopts "$2.$suf4"
133 mv "$2.$suf4" "$2.$suf2" 143 mv "$2.$suf4" "$2.$suf2"
134 else 144 else
135 echo failed to strip off .eh_frame >&2 145 echo failed to strip off .eh_frame >&2
136 fi 146 fi
137 147