Code

block-sha1: support for architectures with memory alignment restrictions
authorNicolas Pitre <nico@cam.org>
Wed, 12 Aug 2009 19:47:55 +0000 (15:47 -0400)
committerJunio C Hamano <gitster@pobox.com>
Wed, 12 Aug 2009 20:36:32 +0000 (13:36 -0700)
commit660231aa9727d29c7d2c16319bc6a3fa8bed3e0e
tree5059ca749124a89a404f193a7b97c648ba4d16b2
parentdc52fd29738c2af98f3e986691eca34addfd4914
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>
block-sha1/sha1.c