Re: [Qemu-devel] [PATCH v7 5/9] qemu-log: new option -dfilter to limit output

From: Peter Maydell <peter.maydell@linaro.org>
To: "Alex Bennée" <alex.bennee@linaro.org>
Cc: QEMU Developers <qemu-devel@nongnu.org>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	Peter Crosthwaite <crosthwaitepeter@gmail.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Aurelien Jarno <aurelien@aurel32.net>,
	Richard Henderson <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH v7 5/9] qemu-log: new option -dfilter to limit output
Date: Thu, 3 Mar 2016 23:33:50 +0000	[thread overview]
Message-ID: <CAFEAcA8FD92-c_bk8ydSC29ViDQLr6xk=OfGCEApjJRd6DcUKA@mail.gmail.com> (raw)
In-Reply-To: <1456156787-17509-6-git-send-email-alex.bennee@linaro.org>

On 22 February 2016 at 15:59, Alex Bennée <alex.bennee@linaro.org> wrote:
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 2f0465e..c7e0486 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -3094,6 +3094,24 @@ STEXI
>  Output log in @var{logfile} instead of to stderr
>  ETEXI
>
> +DEF("dfilter", HAS_ARG, QEMU_OPTION_DFILTER, \
> +    "-dfilter range,..  filter debug output to range of addresses (useful for -d cpu,exec,etc..)\n",
> +    QEMU_ARCH_ALL)
> +STEXI
> +@item -dfilter @var{range1}[,...]
> +@findex -dfilter
> +Filter debug output to that relevant to a range of target addresses. The filter
> +spec can be either @var{start}+@var{size}, @var{start}-@var{size} or
> +@var{start}..@var{end} where @var{start} @var{end} and @var{size} are the
> +addresses and sizes required. For example:
> +@example
> +    -dfilter 0x8000..0x9000,0xffffffc000080000+0x200,0xffffffc000060000-0x1000
> +@end example
> +Will dump output for any code in the 0x1000 sized block starting at 0x8000 and

The block defined starting at 0x8000 is 0x1001 in size (unless you want to
change it to be "0x8000..0x8fff").

thanks
-- PMM