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Re: [PATCH v5 09/22] target/arm: prepare for multiple dynamic XMLs

From: Richard Henderson
Subject: Re: [PATCH v5 09/22] target/arm: prepare for multiple dynamic XMLs
Date: Wed, 15 Jan 2020 12:21:50 -1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2

On 1/14/20 5:09 AM, Alex Bennée wrote:
> We will want to generate similar dynamic XML for gdbstub support of
> SVE registers (the upstream doesn't use XML). To that end lightly
> rename a few things to make the distinction.
> Signed-off-by: Alex Bennée <address@hidden>
> ---
>  target/arm/cpu.h     | 20 +++++++++++++-------
>  target/arm/gdbstub.c | 30 +++++++++++++++---------------
>  target/arm/helper.c  |  4 ++--
>  3 files changed, 30 insertions(+), 24 deletions(-)

It seems to me, that if vg were present in the xml, and honored by gdb, that
the xml for the rest of the registers *could* describe the maximum register
width as opposed to the current register width.  At which point this wouldn't
need to be dynamic at all -- merely have a comment next to ARM_MAX_VQ that
changes must be reflected in the gdb xml file too.  Which I expect to never 

But again, this is how gdb works today, so
Acked-by: Richard Henderson <address@hidden>


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