RE: [PATCH V3 2/2] Add mpx-bnd-init-on-return set/show command for inferior calls.

Tedeschi, Walfred
2016-01-13T16:12:21Z

Eli,

I will add those fixes. Thanks for your review!

Best regards,
-Fred

-----Original Message-----
From: Eli Zaretskii [mailto:eliz@gnu.org]
Sent: Wednesday, January 13, 2016 5:10 PM
To: Tedeschi, Walfred
Cc: brobecker@adacore.com; gdb-patches@sourceware.org
Subject: Re: [PATCH V3 2/2] Add mpx-bnd-init-on-return set/show command for inferior calls.

> From: Walfred Tedeschi <walfred.tedeschi@intel.com>
> Cc: gdb-patches@sourceware.org, Walfred Tedeschi
> <walfred.tedeschi@intel.com>
> Date: Wed, 13 Jan 2016 13:39:59 +0100
>
> --- a/gdb/NEWS
> +++ b/gdb/NEWS
> @@ -3,6 +3,10 @@
>
> *** Changes since GDB 7.10
>
> +* show mpx-bnd-init-on-return
> + set mpx-bnd-init-on-return on i386 and amd64
> + Support for set bound registers to INIT state when using the command return.

Please quote "return" in the last sentence.

> +While the using the @command{return} bounds can propagate through
^^^
This "the" should be deleted. Also, @command is for external commands, not GDB commands.

> +execution causing a boundary violation.

Hmm... "propagate through execution" is not really clear. How about simplifying this, like below?

When you use the @code{return} command, the bound registers might
cause boundary violations because they were not updated for the
early return from the function.

> +The behaviour of initializing bounds when using @command{return} can
> +be controlled and vizualized via the following commands:

I think we should explain how initializing these registers comes into play. Like this, for example:

To countermand that, @value{GDBN} can force initialization of the
bound registers when it performs the @code{return} command. This is
controlled by the following option:

The documentation parts are OK with these fixes.

Thanks.
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