insw(), insl(), outsw(), outsl() behaviour on big-endian processo

Patrick Lerda (LERDA@microprocess.com)
Mon, 7 Jun 1999 13:56:37 +0200

The functions: insw(), insl(), outsw(), outsl() perform memory block
copy, and are used in
a lot of drivers. In the PowerPC version of linux theses fuinctions are
defined to change the endianess
of data being proceeded (the endianess is changed with a byte swapping
operator).

Is this correct to change the endianess of data ? Is a specification
available to define the behaviour of
theses functions for different linux architectures.

In my opinion theses functions are generally used to do a fast byte
copy, in this case
doing a byte-swapping of data break a lot of programs.

LERDA Patrick

e-mail: lerda@microprocess.com

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