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Subject: Re: [PATCH v5 1/4] arc: Add ARCv2 XML target along with refactoring
To: Shahab Vahedi <shahab.vahedi@gmail.com>, gdb-patches@sourceware.org
Cc: Shahab Vahedi <shahab@synopsys.com>, Tom Tromey <tom@tromey.com>,
 Eli Zaretskii <eliz@gnu.org>, Anton Kolesov <anton.kolesov@synopsys.com>,
 Francois Bedard <fbedard@synopsys.com>
References: <20200326125206.13120-1-shahab.vahedi@gmail.com>
 <20200804085742.1458-1-shahab.vahedi@gmail.com>
 <20200804085742.1458-2-shahab.vahedi@gmail.com>
From: Simon Marchi <simark@simark.ca>
Message-ID: <9601ee94-e38c-460d-e044-b7b7a7400d2e@simark.ca>
Date: Tue, 4 Aug 2020 09:08:39 -0400
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On 2020-08-04 4:57 a.m., Shahab Vahedi wrote:
> diff --git a/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml b/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml
> index 09689b8a44b..0ae2190c511 100644
> --- a/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml
> +++ b/gdb/testsuite/gdb.arch/arc-tdesc-cpu.xml
> @@ -9,7 +9,7 @@
>  <target>
>    <architecture>arc:HS</architecture>
>  
> -  <feature name="org.gnu.gdb.arc.core.v2">
> +  <feature name="org.gnu.gdb.arc.core">
>      <reg name="r0"  bitsize="32"/>
>      <reg name="r1"  bitsize="32"/>
>      <reg name="r2"  bitsize="32"/>
> @@ -46,7 +46,7 @@
>      <reg name="pcl" bitsize="32"/>
>    </feature>
>  
> -  <feature name="org.gnu.gdb.arc.aux-minimal">
> +  <feature name="org.gnu.gdb.arc.aux">
>      <reg name="pc"       bitsize="32"/>
>      <reg name="status32" bitsize="32"/>
>    </feature>

Does that cause backwards compatibility issues?  Could someone have written a gdb stub
returning an XML target description containing the old feature names, which will now not
work due to these name changes?

Simon