On 00:00 Fri 24 Sep , Andre wrote:
> On 09/21/2010 06:28 AM, Jean-Christophe PLAGNIOL-VILLARD wrote:
>
> >Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD<plagnioj at jcrosoft.com>
> >---
> > lib/sha1.c | 20 +++-----------------
> > lib/sha256.c | 19 +++----------------
> > 2 files changed, 6 insertions(+), 33 deletions(-)
> >
> >diff --git a/lib/sha1.c b/lib/sha1.c
> >index 0e8aed1..b4e2abc 100644
> >--- a/lib/sha1.c
> >+++ b/lib/sha1.c
> >@@ -29,6 +29,7 @@
> > #include<digest.h>
> > #include<init.h>
> > #include<linux/string.h>
> >+#include<asm/byteorder.h>
> >
> > #define SHA1_SUM_POS -0x20
> > #define SHA1_SUM_LEN 20
> >@@ -44,23 +45,8 @@ sha1_context;
> > /*
> > * 32-bit integer manipulation macros (big endian)
> > */
> >-#ifndef GET_UINT32_BE
> >-#define GET_UINT32_BE(n,b,i) { \
> >- (n) = ( (uint32_t) (b)[(i) ]<< 24 ) \
> >- | ( (uint32_t) (b)[(i) + 1]<< 16 ) \
> >- | ( (uint32_t) (b)[(i) + 2]<< 8 ) \
> >- | ( (uint32_t) (b)[(i) + 3] ); \
> >-}
> >-#endif
> >-
> >-#ifndef PUT_UINT32_BE
> >-#define PUT_UINT32_BE(n,b,i) { \
> >- (b)[(i) ] = (unsigned char) ( (n)>> 24 ); \
> >- (b)[(i) + 1] = (unsigned char) ( (n)>> 16 ); \
> >- (b)[(i) + 2] = (unsigned char) ( (n)>> 8 ); \
> >- (b)[(i) + 3] = (unsigned char) ( (n) ); \
> >-}
> >-#endif
> >+#define GET_UINT32_BE(n,b,i) (n) = be32_to_cpu(((uint32_t*)(b))[i / 4])
> >+#define PUT_UINT32_BE(n,b,i) ((uint32_t*)(b))[i / 4] = cpu_to_be32(n)
> >
>
> The previous macros served two purposes: endian swapping and
> performing the memory accesses byte-by-byte. New versions are unsafe
> for CPUs which do not support misaligned 32bit memory accesses.
be32_to_cpu and cpu_to_be32 are supposed to handle this
and if they need byte-by-byte you will handle there no in each file that need
to do it
Best Regards,
J.
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