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From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
	qemu-arm@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH v2 for-6.2] target/arm: Advertise MVE to gdb when present
Date: Mon, 1 Nov 2021 13:38:49 -0400	[thread overview]
Message-ID: <fc90c451-c38a-00ce-cc9a-64ce7e1f08c9@linaro.org> (raw)
In-Reply-To: <20211101160814.5103-1-peter.maydell@linaro.org>

On 11/1/21 12:08 PM, Peter Maydell wrote:
> Cortex-M CPUs with MVE should advertise this fact to gdb, using the
> org.gnu.gdb.arm.m-profile-mve XML feature, which defines the VPR
> register.  Presence of this feature also tells gdb to create
> pseudo-registers Q0..Q7, so we do not need to tell gdb about them
> separately.
> 
> Note that unless you have a very recent GDB that includes this fix:
> http://patches-tcwg.linaro.org/patch/58133/  gdb will mis-print the
> individual fields of the VPR register as zero (but showing the whole
> thing as hex, eg with "print /x $vpr" will give the correct value).
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> Reviewed-by: Richard Henderson<richard.henderson@linaro.org>
> ---
> Reposting this unchanged except to remove the 'RFC' tag, as
> the gdb patches have now gone upstream and the XML layout is
> therefore finalized.
> ---

Thanks, applied to target-arm.next.


r~


      parent reply	other threads:[~2021-11-01 18:55 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-01 16:08 [PATCH v2 for-6.2] target/arm: Advertise MVE to gdb when present Peter Maydell
2021-11-01 17:21 ` Philippe Mathieu-Daudé
2021-11-01 17:38 ` Richard Henderson [this message]

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