[boost] Re: shared_ptr on ppc?

From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2005-04-06 11:41:07

Alexander Terekhov wrote:
[...]
>  asm long atomic_decrement_strong( register long * pw ) {
> 
>       <load-reserved>
>       <add -1>
>       <branch if zero to acquire>
>       {lw}sync
> 
>     loop:
> 
>       <store-conditional>
>       <branch if !failed to done>
>       <load-reserved>
>       <add -1>
>       <branch if !zero to loop>
> 
>     acquire:
> 
>       <store-conditional>
>       <branch if failed to loop>
>       isync
> 
>     done:
> 
>       <...>
>   }

I meant

 asm long atomic_decrement_strong( register long * pw ) {

      <load-reserved>
      <add -1>
      <branch if zero to acquire>
      {lw}sync

    loop1:

      <store-conditional>
      <branch if !failed to done>

    loop2:

      <load-reserved>
      <add -1>
      <branch if !zero to loop1>

    acquire:

      <store-conditional>
      <branch if failed to loop2>
      isync

    done:

      <...>
  }

regards,
alexander.