From: Andreas Schwab <schwab@linux-m68k.org>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linux/m68k <linux-m68k@vger.kernel.org>
Subject: Re: arch_ptrace() question
Date: Mon, 04 Oct 2010 22:46:40 +0200 [thread overview]
Message-ID: <m2lj6dlm8f.fsf@igel.home> (raw)
In-Reply-To: <AANLkTikZ8b9QNBkNQRCJj7ajy86hrxiPqdC-oHDe+748@mail.gmail.com> (Geert Uytterhoeven's message of "Mon, 4 Oct 2010 21:35:05 +0200")
Geert Uytterhoeven <geert@linux-m68k.org> writes:
> However, in the PTRACE_PEEKUSR case, the limit is 49, not 48, so it
> allows to access the
> first 4 bytes of fpstate[], too.
>
> Is this intentional
Yes, I think it is. It allows to check whether the state is NULL or
not, thus whether the fpu registers are actually valid.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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prev parent reply other threads:[~2010-10-04 20:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-04 19:35 arch_ptrace() question Geert Uytterhoeven
2010-10-04 20:46 ` Andreas Schwab [this message]
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