swab(9F) Kernel Functions for Drivers swab(9F)NAMEswab - swap bytes in 16-bit halfwords
SYNOPSIS
#include <sys/sunddi.h>
void swab(void *src, void *dst, size_t nbytes);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
src A pointer to the buffer containing the bytes to be swapped.
dst A pointer to the destination buffer where the swapped bytes
will be written. If dst is the same as src the buffer will be
swapped in place.
nbytes Number of bytes to be swapped, rounded down to the nearest
half-word.
DESCRIPTION
The swab() function copies the bytes in the buffer pointed to by src to
the buffer pointer to by dst, swapping the order of adjacent bytes in
half-word pairs as the copy proceeds. A total of nbytes bytes are
copied, rounded down to the nearest half-word.
CONTEXT
The swab() function can be called from user, interrupt, or kernel con‐
text.
SEE ALSO
Writing Device Drivers
NOTES
Since swab() operates byte-by-byte, it can be used on non-aligned buf‐
fers.
SunOS 5.10 16 Jan 2006 swab(9F)
