tree 5059ca749124a89a404f193a7b97c648ba4d16b2
parent dc52fd29738c2af98f3e986691eca34addfd4914
author Nicolas Pitre <nico@cam.org> 1250106475 -0400
committer Junio C Hamano <gitster@pobox.com> 1250109392 -0700

block-sha1: support for architectures with memory alignment restrictions

This is needed on architectures with poor or non-existent unaligned memory
support and/or no fast byte swap instruction (such as ARM) by using byte
accesses to memory and shifting the result together.

This also makes the code portable, therefore the byte access methods are
the defaults.  Any architecture that properly supports unaligned word
accesses in hardware simply has to enable the alternative methods.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>