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48c72fccbf
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Author SHA1 Message Date
Magnus Damm
48c72fccbf sh: 16-bit get_unaligned() sh4a fix 
This patch fixes the 16-bit case of the sh4a specific
unaligned access implementation. Without this patch
the 16-bit version of sh4a get_unaligned() results in
a 32-bit read which may read more data than intended
and/or cross page boundaries.

Unbreaks mtd NOR write handling on Migo-R.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 2009-06-04 20:20:24 +09:00
Paul Mundt
95b781c239 sh: Provide optimized unaligned loads on SH-4A. 
This adds support for unaligned loads on SH-4A, using the SH-4A's
neutered movua.l instruction. As movua.l is r0-inspired, stores are
still handled through the packed struct.

Based on asm-generic/unaligned.h by Harvey Harrison.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
 2008-12-22 18:43:48 +09:00