generic-library/openssl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

crypto/modes/modes_lcl.h: let STRICT_ALIGNMENT be on ARMv7.

Browse Source 
While ARMv7 in general is capable of unaligned access, not all instructions
actually are. And trouble is that compiler doesn't seem to differentiate
those capable and incapable of unaligned access. Side effect is that kernel
goes into endless loop retrying same instruction triggering unaligned trap.
Problem was observed in xts128.c and ccm128.c modules. It's possible to
resolve it by using (volatile u32*) casts, but letting STRICT_ALIGNMENT
be feels more appropriate.

(cherry picked from commit 3bdd80521a81d50ade4214053cd9b293f920a77b)
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
This commit is contained in:
Andy Polyakov 2013-04-13 20:57:37 +02:00
parent 8a09500d9c
commit d8a23532dd
1 changed files with 1 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
crypto/modes/modes_lcl.h
View File

@ -29,10 +29,7 @@ typedef unsigned char u8;
#if defined(__i386) || defined(__i386__) || \
defined(__x86_64) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \
defined(__s390__) || defined(__s390x__) || \
( (defined(__arm__) || defined(__arm)) && \
(defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || \
defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__)) )
defined(__s390__) || defined(__s390x__)
# undef STRICT_ALIGNMENT
#endif