Specific Input/Output Services

The DKI provides specific I/O routines optimized to handle byte swapping. Typically, these services are intended to be used by a host bus driver to handle different byte ordering between the processor bus and the host bus.

Specific I/O services are defined below as sets of routines where the _xx suffix indicates the bit length of the data on which the services apply. This suffix may take one of the following values:

• _16 for 16-bit data

• _32 for 32-bit data

• _64 for 64-bit data

Specific input/output related services are described below. See the man pages for complete descriptions of listed commands:

loadSwap_xx

loads data from a given address and returns the corresponding byte swapped value. The addr argument specifies the address to read from

storeSwap_xx

stores into a given address the value byte swapped

swap_xx

swap in place the bytes of the data stored at a given address