Re: [PATCH V4] Add support for bound table in the Intel MPX context.

[Joel Brobecker <brobecker@adacore.com>]

> 2015-04-20  Walfred Tedeschi  <walfred.tedeschi@intel.com>
>             Mircea Gherzan  <mircea.gherzan@intel.com>
> 
> 	* i386-tdep.c (MPX_BASE_MASK, MPX_BD_MASK, MPX_BT_MASK, MPX_BD_MASK_32,
> 	MPX_BT_MASK_32): New macros.
> 	(i386_mpx_set_bounds): New function that implements
> 	the command "set-mpx-bound".
> 	(i386_mpx_enabled) Helper function to test MPX availability.
> 	(i386_mpx_bd_base) Helper function to calculate the base directory
> 	address. (i386_mpx_get_bt_entry) Helper function to access a bound
> 	table entry. (i386_mpx_print_bounds) Effectively display bound
> 	information. (_initialize_i386_tdep): Qdd new commands
> 	to commands "set mpx" and "show mpx". (_initialize_i386_tdep):
> 	Add "bound" to the commands "show mpx" and "set mpx" commands.
> 	(mpx_set_cmdlist and mpx_show_cmdlist):
> 	list for the new prefixed "set mpx" and "show mpx" commands.
> 	* NEWS: List new commands for MPX support.
> 
> testsuite:
> 
> 	* gdb.arch/i386-mpx-map.c: New file.
> 	* gdb.arch/i386-mpx-map.exp: New File.
> 
> doc:
> 	* gdb.texinfo (i386): Add documentation about "show mpx bound"
> 	and "set mpx bound".

> +/* Print routine for the mpx bounds.  */
> +
> +static void
> +i386_mpx_print_bounds (const CORE_ADDR bt_entry[])

I don't think we've been using the [] syntax for parameters, but
I don't see a problem with that per se.

What I'm wondering, however, is the size of the array. In particular,
you'll need, at least, to update the documentation. But if the size
is actually statically known (which it seems is at most 4 elements),
then perhaps it might be worth just saying it in the parameter type
declaration...

Other than that, the patch looks good to me.

-- 
Joel