linux-kernel - Re: [PATCH] tools: bpf_jit_disasm: Add option to dump JIT image to a file.

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Message-Id: <20170413.130415.1776516439699504044.davem@davemloft.net>
Date:   Thu, 13 Apr 2017 13:04:15 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     david.daney@...ium.com
Cc:     ast@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tools: bpf_jit_disasm: Add option to dump JIT image to
 a file.

From: David Daney <david.daney@...ium.com>
Date: Tue, 11 Apr 2017 14:30:52 -0700

> When debugging the JIT on an embedded platform or cross build
> environment, libbfd may not be available, making it impossible to run
> bpf_jit_disasm natively.
> 
> Add an option to emit a binary image of the JIT code to a file.  This
> file can then be disassembled off line.  Typical usage in this case
> might be (pasting mips64 dmesg output to cat command):
> 
>    $ cat > jit.raw
>    $ bpf_jit_disasm -f jit.raw -O jit.bin
>    $ mips64-linux-gnu-objdump -D -b binary -m mips:isa64r2 -EB jit.bin
> 
> Signed-off-by: David Daney <david.daney@...ium.com>

Applied, thanks.