2010/3/31 Martin Bochnig <[email protected]>:
> 2010/3/28 ольга крыжановская <[email protected]>:
>> I am looking for a Sun Studio C example for inline SPARC assembler
>> which uses the VIS 'block copy' instruction to move a block of <n>
>> bytes. Has anyone time to write such an example for me, please?
>>
>> Olga
>> --
>> , _ _ ,
>> { \/`o;====- Olga Kryzhanovska -====;o`\/ }
>> .----'-/`-/ [email protected] \-`\-'----.
>> `'-..-| / Solaris/BSD//C/C++ programmer \ |-..-'`
>> /\/\ /\/\
>> `--` `--`
>
>
>
> Hi Olga, I got myself confused now.
> But look at this:
>
> http://books.google.com/books?id=L4oyNrsFBbsC&pg=PT69&lpg=PT69&dq=vis+block+memcpy&source=bl&ots=jl1be3e-ut&sig=v8RCH_S5LKdE0qcsYJ2WWNT0-_g&hl=ru&ei=kgSzS_rNEsqi_Abm6rX8CA&sa=X&oi=book_result&ct=result&resnum=3&ved=0CA4Q6AEwAjgK#v=onepage&q=vis%20block%20memcpy&f=false
>
> Support exists in processors to accelerate block copying. Sun´s VIS
> instruction
> set implemented in the UltraSPARC-series processors has a block-copying
> instruct
> ion that bypasses the caches, while still maintaining consistency between the
> ca
> ches and main memory. The bcopy(3C) and memcpy(3C) function calls both use
> this
> mechanism on VIS-enabled processors AUTOMATICALLY.
>
>
> and
>
>
> http://books.google.com/books?id=0S8guIHHaiIC&pg=PA149&lpg=PA149&dq=vis+block+memcpy&source=bl&ots=cOhh1QOz_g&sig=V5qi3JWgPogmglvL83WeYIpXgrs&hl=ru&ei=kgSzS_rNEsqi_Abm6rX8CA&sa=X&oi=book_result&ct=result&resnum=6&ved=0CBoQ6AEwBTgK#v=onepage&q=vis%20block%20memcpy&f=false
>
>
> The UltraSPARC-specific VIS block move instruction performs a 64-byte
> transfer t
> hat is both cache coherent and nonpolluting. This feature IS USED by the
> platfor
> m-specific libc bcopy, bzero, memcpy, memmove, memset, memcmp operations.
But not strcpy(), sprintf(), right?
Olga
--
, _ _ ,
{ \/`o;====- Olga Kryzhanovska -====;o`\/ }
.----'-/`-/ [email protected] \-`\-'----.
`'-..-| / Solaris/BSD//C/C++ programmer \ |-..-'`
/\/\ /\/\
`--` `--`
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