Messages in this thread | | | Date | Thu, 4 Mar 2021 15:12:26 +0100 | From | Peter Zijlstra <> | Subject | Re: [tip: objtool/core] objtool: Parse options from OBJTOOL_ARGS |
| |
On Wed, Mar 03, 2021 at 08:45:31AM -0000, tip-bot2 for Peter Zijlstra wrote: > The following commit has been merged into the objtool/core branch of tip: > > Commit-ID: b52eb21aeca75790869c26b91b1d7b80b3946430 > Gitweb: https://git.kernel.org/tip/b52eb21aeca75790869c26b91b1d7b80b3946430 > Author: Peter Zijlstra <peterz@infradead.org> > AuthorDate: Fri, 26 Feb 2021 11:32:30 +01:00 > Committer: Peter Zijlstra <peterz@infradead.org> > CommitterDate: Wed, 03 Mar 2021 09:38:32 +01:00 > > objtool: Parse options from OBJTOOL_ARGS > > Teach objtool to parse options from the OBJTOOL_ARGS environment > variable. > > This enables things like: > > $ OBJTOOL_ARGS="--backup" make O=defconfig-build/ kernel/ponies.o > > to obtain both defconfig-build/kernel/ponies.o{,.orig} and easily > inspect what objtool actually did.
Latest objdiff.sh to go with this:
$ cat objdiff.sh #!/bin/bash
name=$1 pre=${name}.orig post=${name}
function to_text { obj=$1 ( objdump -wdr $obj; readelf -W --relocs --symbols $obj | awk '/^Relocation section/ { $6=0 } { print $0 }' ) > ${obj}.tmp }
to_text $pre to_text $post
diff -u ${pre}.tmp ${post}.tmp
rm ${pre}.tmp ${post}.tmp
| |