linux-kernel - Re: [patch v3 19/36] Hexagon: Add ptrace support

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Message-ID: <20110919152505.GB6830@codeaurora.org>
Date:	Mon, 19 Sep 2011 10:25:05 -0500
From:	"Linas Vepstas (Code Aurora)" <linas@...eaurora.org>
To:	Pedro Alves <pedro@...esourcery.com>
Cc:	Jonas Bonn <jonas.bonn@...il.com>,
	Richard Kuo <rkuo@...eaurora.org>, linux-arch@...r.kernel.org,
	linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org,
	arnd@...db.de
Subject: Re: [patch v3 19/36] Hexagon: Add ptrace support

On Sat, Sep 10, 2011 at 12:29:57PM +0100, Pedro Alves wrote:
> On Saturday 10 September 2011 07:42:26, Jonas Bonn wrote:
> 
> > I'm really not an expert on GDB, but I believe it can use either the
> > PEEK/POKE functions to access regs, or it can use GET/SETREGS; it's an
> > architecture-dependent configuration.  I think the second variant can
> > be easily modified to become GET/SETREGSET instead, and the PEEK/POKE
> > variant wouldn't be needed at all.
> 
> Yes, the x86/x86-64 ports or gdb and gdbserver are already
> using GET/SETREGSET even.

Reading the code, it seemed to only fetch "extended state" in
this way, and not all of the registers.  Am I mistaken?

--linas

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