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https://github.com/fail0verflow/switch-coreboot.git
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b23508f4cd
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> git-svn-id: svn://coreboot.org/repository/coreboot-v3@795 f3766cd6-281f-0410-b1cd-43a5c92072e9
58 lines
1.9 KiB
Bash
Executable file
58 lines
1.9 KiB
Bash
Executable file
#!/bin/bash
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#
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# This file is part of the coreboot project.
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#
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# Copyright (C) 2008 Carl-Daniel Hailfinger
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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#
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# This program checks whether a given list of files ($3+) has any writable
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# and allocatable non-empty sections. If so, the name of the file, the name of
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# the section and the symbols in that section are printed and an error is
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# returned.
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#
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# This is extremely useful for stage1 and initram correctness because
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# the .data* and .bss sections are silently dropped. All accesses there
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# would wreak havoc (silent discard of writes or silent corruption of
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# unspecified memory or cache).
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#
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# The string parsing used here heavily depends on the textual form of
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# GNU objdump output and on the instruction architecture of the files.
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LANG=C
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OBJDUMP=$1
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READELF=$2
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shift 2
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for a in $*; do
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# Look for sections which have WRITE and ALLOC flags set.
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$READELF -St $a|
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grep -B2 "WRITE.*ALLOC"|
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grep -B1 "^ \+[[:alnum:]]\+ \+[0-9a-f]\+ \+[0-9a-f]\+ \+0*[1-9a-f]"|
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grep "^ \+\[ *[0-9]\+"|
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cut -f 2 -d"]"|
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sed "s/^[[:blank:]]*//"|
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while read b; do
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echo -n "$a: section $b: "
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$OBJDUMP -t --section=$b $a|
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grep -i "^[0-9a-f]\{8\}"|
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grep -v "00000000 [^ ]\+$"|
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sed "s/.* //"|
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xargs echo
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done
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done|
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grep ""
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# Invert the result
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test $? -ne 0
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