Re: [avr-gcc-list] local labels in gcc assembler

[Bruce D. Lightner]

Michal,

> Hi all,
> I have several subroutines in my ass.S assembler module (nothing unusual 8-).
> I would like to use same names for labels in different subroutines, such as:
>
> .func sub1
> sub1:   if_something
>            breq zero
>            ret
> zero:    do_something
>            ret
> .endfunc
>
> .func sub2
> sub2:   if_something
>            breq zero
>            ret
> zero:    do_something
>            ret
> .endfunc
>
> So far I have had to distinguish between first and second zero label,
> because that code generates following assembler error message:
> Error: symbol 'zero' is already defined
>
> Does someone have an idea how to solve that?

Use "numeric" labels.  This is how I'd do it...

   sub1:   if_something
              breq 0f
              ret
   0:      do_something
              ret
   .endfunc

   .func sub2
   sub2:   if_something
              breq 0f
              ret
   0:      do_something
              ret
   .endfunc

The "f" in the label "0f" tells the assembler to look forward for the 
label "0".   Use "b" to look backwards.

Best regards,

Bruce


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 Bruce D. Lightner
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