Subject: Re: globals and name searching
From: Peter Flake (flake@co-design.com)
Date: Wed Mar 20 2002 - 08:46:18 PST
Stu,
I would suggest changing 12.5 para 1 to say "until the root of the
hierarchy is reached, and then in the $root global name space".
And then later add
d) Look in the $root global name space.
A name in the global name space can be explicitly selected as $root.myname.
Peter.
At 10:44 PM 3/19/02 -0800, Stuart Sutherland wrote:
>In March 18th's phone conference, I expressed concern that Verilog's rules
>for upward name searching might conflict with referencing globals. I've
>reviewed the SystemVerilog and Verilog-2001 LRM's, and still feel a
>clarification is needed. The attached PDF file shows the name search
>rules, as defined in the 1364-2001 standard. It seems indicate that under
>some circumstances, name searching can extend beyond the module boundary
>into parent modules within the hierarchy. In the draft 4 SystemVerilog
>description of the $root global name space (section 12), I do not find any
>explanation on when a name will be searched for in the global space. When
>does the searching switch from Verilog's upward searching to looking in
>the global space?
>
>The name search rule for globals needs to be defined, and in such a way as
>to be compatible with the Verilog-2001 standard's name search rules. Can
>someone propose wording for the SystemVerilog LRM for global name searching?
>
>Stu
>
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Stuart Sutherland Sutherland HDL Inc.
>stuart@sutherland-hdl.com 22805 SW 92nd Place
>phone: 503-692-0898 Tualatin, OR 97062
>www.sutherland-hdl.com
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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