linux-kernel - Re: [PATCH v4 18/24] scripts/checkstack.pl: Add openrisc support

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Date:   Fri, 24 Feb 2017 15:42:06 +0100
From:   Tobias Klauser <tklauser@...tanz.ch>
To:     Stafford Horne <shorne@...il.com>
Cc:     Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        linux@...ck-us.net, openrisc@...ts.librecores.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 18/24] scripts/checkstack.pl: Add openrisc support

On 2017-02-24 at 05:32:38 +0100, Stafford Horne <shorne@...il.com> wrote:
> Openrisc stack pointer is managed by decrementing r1. Add regexes to
> recognize this.
> 
> Signed-off-by: Stafford Horne <shorne@...il.com>
> ---
>  scripts/checkstack.pl | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/scripts/checkstack.pl b/scripts/checkstack.pl
> index dd83978..eea5b78 100755
> --- a/scripts/checkstack.pl
> +++ b/scripts/checkstack.pl
> @@ -106,6 +106,9 @@ my (@stack, $re, $dre, $x, $xs, $funcre);
>  	} elsif ($arch eq 'sparc' || $arch eq 'sparc64') {
>  		# f0019d10:       9d e3 bf 90     save  %sp, -112, %sp
>  		$re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o;
> +	} elsif ($arch eq 'openrisc') {
> +		# c000043c:       9c 21 fe f0     l.addi r1,r1,-272
> +		$re = qr/.*l\.addi.*r1,r1,-(([0-9]{2}|[3-9])[0-9]{2})/o;

The if/elsif clauses are currently ordered alphabetically (except for
blackfin :-/), so this should rather be inserted above after nios2.