linux-toradex.git/arch/tile/lib/string-endian.h, branch v4.10 Linux kernel for Apalis and Colibri modules tile: optimize and clean up string functions 2013-08-01T20:23:12+00:00 Chris Metcalf cmetcalf@tilera.com 2013-08-01T19:52:17+00:00 c53c70a90fdce3e7a53a0412abf7cc2b2a645988 This change cleans up the string code in a number of ways: - For memcpy(), fix bug in prefetch and increase distance to 3 lines; optimize for unaligned data; do all loads before wh64 to make memcpy safe for forward-overlapping calls; etc. Performance is improved. - Use new copy_byte() function on tilegx to spread a single byte value out into a full word using the shufflebytes instruction. - Clean up header include ordering to be more canonical, and remove spurious #undefs of function names. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> 
This change cleans up the string code in a number of ways:

- For memcpy(), fix bug in prefetch and increase distance to 3 lines;
  optimize for unaligned data; do all loads before wh64 to make memcpy
  safe for forward-overlapping calls; etc.  Performance is improved.

- Use new copy_byte() function on tilegx to spread a single byte value
  out into a full word using the shufflebytes instruction.

- Clean up header include ordering to be more canonical, and remove
  spurious #undefs of function names.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
arch/tile: support building big-endian kernel 2012-05-25T16:48:22+00:00 Chris Metcalf cmetcalf@tilera.com 2012-03-29T17:30:31+00:00 1efea40d4172a2a475ccb29b59d6221e9d0c174b The toolchain supports big-endian mode now, so add support for building the kernel to run big-endian as well. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> 
The toolchain supports big-endian mode now, so add support for building
the kernel to run big-endian as well.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>