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kernel: Move arches to use common unaligned access

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Unaligned access is ok for the following arches:
cris, m68k, mn10300, powerpc, s390, x86

Arches that use the memmove implementation for native endian, and
the byteshifting for the opposite endianness.
h8300, m32r, xtensa

Packed struct for native endian, byteshifting for other endian:
alpha, blackfin, ia64, parisc, sparc, sparc64, mips, sh

m86knommu is generic_be for Coldfire, otherwise unaligned access is ok.

frv, arm chooses endianness based on compiler settings, uses the byteshifting
versions.  Remove the unaligned trap handler from frv as it is now unused.

v850 is le, uses the byteshifting versions for both be and le.

Remove the now unused asm-generic implementation.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Harvey Harrison
2008-04-29 01:03:30 -07:00
committed by Linus Torvalds
parent 064106a91b
commit 6510d41954
26 changed files with 203 additions and 1115 deletions
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7
arch/frv/kernel/traps.c
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@@ -362,11 +362,8 @@ asmlinkage void memory_access_exception(unsigned long esr0,
#ifdef CONFIG_MMU
unsigned long fixup;
if ((esr0 & ESRx_EC) == ESRx_EC_DATA_ACCESS)
if (handle_misalignment(esr0, ear0, epcr0) == 0)
return;
if ((fixup = search_exception_table(__frame->pc)) != 0) {
fixup = search_exception_table(__frame->pc);
if (fixup) {
__frame->pc = fixup;
return;
}