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Re: Implementing Local Labels in an Assembler

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"BartC" <bc@freeuk.com> wrote in message news:k1q3pr$4gj$1@dont-email.me...
>
>     [snip...]                         [snip...] 
> [snip...]
>
> OK, so a label without the special prefix effectively partitions code into 
> 'functions', although I would be tempted to use a special designator for 
> this, such as a 'function' directive; I assume you can customise the 
> syntax of this assembler.
>
> That last non-$ label (or the 'function' directive if it also has a name), 
> is used to generate a unique prefix which can be added to the following 
> $labels.
>
> This would obviously be done both for $-labels which are actual labels, 
> and those which are used as operands (jump instructions and such).
>
> The main problem might be if you want to refer to those $-labels from 
> outside that block; using a separate 'function' directive would have the 
> advantage of allowing you to use ordinary labels for this purpose.
>

The two regular assembly language labels *bounding* the instructions that 
contain one or more *local* labels... define the scope of those local 
labels.  These local labels can *not* be referenced outside of that scope.

However, the *same* local label can appear in multiple "scopes".  There's 
the problem...

--

numerist at aquaporin4 dot com

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Thread

Implementing Local Labels in an Assembler "Charles Richmond" <numerist@aquaporin4.com> - 2012-08-30 18:15 -0500
  Re: Implementing Local Labels in an Assembler Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-08-30 16:35 -0700
  Re: Implementing Local Labels in an Assembler James Harris <james.harris.1@gmail.com> - 2012-08-31 00:07 -0700
  Re: Implementing Local Labels in an Assembler "BartC" <bc@freeuk.com> - 2012-08-31 11:29 +0100
    Re: Implementing Local Labels in an Assembler Nomen Nescio <nobody@dizum.com> - 2012-08-31 18:34 +0200
      Re: Implementing Local Labels in an Assembler "BartC" <bc@freeuk.com> - 2012-08-31 20:30 +0100
        Re: Implementing Local Labels in an Assembler Anonymous <nobody@remailer.paranoici.org> - 2012-09-02 09:10 +0000
    Re: Implementing Local Labels in an Assembler "Charles Richmond" <numerist@aquaporin4.com> - 2012-08-31 14:07 -0500
      Re: Implementing Local Labels in an Assembler "BartC" <bc@freeuk.com> - 2012-08-31 20:27 +0100

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