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* compare-debug: Don't fail just because of .eh_frame differences. 

From-SVN: r148079
This commit is contained in:
Alexandre Oliva 2009-06-02 08:11:31 +00:00 committed by Alexandre Oliva
parent fe8a77795a
commit 2feb56e679
2 changed files with 81 additions and 1 deletions
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4
contrib/ChangeLog
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@ -1,3 +1,7 @@
2009-06-02 Alexandre Oliva <aoliva@redhat.com>
* compare-debug: Don't fail just because of .eh_frame differences.
2009-04-27 Jakub Jelinek <jakub@redhat.com>
PR testsuite/39807

78
contrib/compare-debug
View File

@ -2,7 +2,7 @@
# Compare stripped copies of two given object files.
# Copyright (C) 2007 Free Software Foundation
# Copyright (C) 2007, 2008, 2009 Free Software Foundation
# Originally by Alexandre Oliva <aoliva@redhat.com>
# This file is part of GCC.
@ -67,6 +67,82 @@ if cmp "$1.$suf1" "$2.$suf2"; then
status=0
else
status=1
# Assembler-generated CFI will add an .eh_frame section for -g not
# present in -g0. Try to cope with it by checking that an .eh_frame
# section is present in either object file, and then stripping it
# off before re-comparing.
cmd=
cmp1=
cmp2=
for t in objdump readelf eu-readelf; do
if ($t --help) 2>&1 | grep -e '--\[*section-\]*headers' > /dev/null; then
cmd=$t
$cmd --section-headers "$1.$suf1" | grep '\.eh_frame' > /dev/null
cmp1=$?
$cmd --section-headers "$2.$suf2" | grep '\.eh_frame' > /dev/null
cmp2=$?
break
fi
done
# If we found .eh_frame in one but not the other, or if we could not
# find a command to tell, try to strip off the .eh_frame section
# from both.
if test "x$cmp1" != "x$cmp2" || test "x$cmd" = "x"; then
suf3=$suf1.
while test -f "$1.$suf3"; do
suf3=$suf3.
done
suf4=$suf2.
while test -f "$2.$suf4"; do
suf4=$suf4.
done
trap 'rm -f "$1.$suf1" "$2.$suf2" "$1.$suf3" "$2.$suf4"' 0 1 2 15
if (objcopy -v) 2>&1 | grep -e "--remove-section" > /dev/null; then
objcopy --remove-section .eh_frame "$1.$suf1" "$1.$suf3"
cmp "$1.$suf1" "$1.$suf3" > /dev/null
cmp1=$?
objcopy --remove-section .eh_frame "$2.$suf2" "$2.$suf4"
cmp "$2.$suf2" "$2.$suf4" > /dev/null
cmp2=$?
mv "$1.$suf3" "$1.$suf1"
mv "$2.$suf4" "$2.$suf2"
elif (strip --help) 2>&1 | grep -e --remove-section > /dev/null; then
cp "$1.$suf1" "$1.$suf3"
strip --remove-section .eh_frame "$1.$suf3"
cp "$2.$suf2" "$2.$suf4"
strip --remove-section .eh_frame "$2.$suf4"
cmp "$1.$suf1" "$1.$suf3" > /dev/null
cmp1=$?
cmp "$2.$suf2" "$2.$suf4" > /dev/null
cmp2=$?
mv "$1.$suf3" "$1.$suf1"
mv "$2.$suf4" "$2.$suf2"
fi
trap 'rm -f "$1.$suf1" "$2.$suf2"' 0 1 2 15
fi
if test "x$cmp1" != "x$cmp2" && cmp "$1.$suf1" "$2.$suf2"; then
status=0
else
status=1
fi
fi
$rm "$1.$suf1" "$2.$suf2"