linux-kernel - Re: [PATCH 17/28] nios2: Signal handling support

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Message-ID: <CAFiDJ59g0E+hoREriydqk2uBsDvchPMSQi6NCgnwOd64OGLJ0w@mail.gmail.com>
Date:	Thu, 24 Apr 2014 18:13:58 +0800
From:	Ley Foon Tan <lftan@...era.com>
To:	Richard Weinberger <richard.weinberger@...il.com>
Cc:	Linux-Arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	cltang@...esourcery.com
Subject: Re: [PATCH 17/28] nios2: Signal handling support

On Thu, Apr 24, 2014 at 6:01 PM, Ley Foon Tan <lftan@...era.com> wrote:
> On Sun, Apr 20, 2014 at 3:29 AM, Richard Weinberger
> <richard.weinberger@...il.com> wrote:
>
>>> +
>>> +       /* Default to using normal stack.  */
>>> +       usp = regs->sp;
>>> +
>>> +       /* This is the X/Open sanctioned signal stack switching.  */
>>> +       if ((ka->sa.sa_flags & SA_ONSTACK) && (current->sas_ss_sp != 0)) {
>>> +               if (!on_sig_stack(usp))
>>> +                       usp = current->sas_ss_sp + current->sas_ss_size;
>>> +       }
>>
>> You can use sigsp() here.
> Okay.
>
I just noticed that sigsp() have struct ksignal argument. We can use
sigsp() for nios2 because it doesn't have struct ksignal.

unsigned long sigsp(unsigned long sp, struct ksignal *ksig);
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