Little Endian to Big Endian

Hello,

I am in need to write most efficint little endian to big endian
conversion function.
I know it can be done best in assembly with one instruction. can
somebody tell me what instruction will do that?

if possible if you can write small assebly fuction for me then it would
be great because I dont know anything in Powerpc assembly nor I have
some sample code to follow..

Thanks
Regards,
Naushit


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