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Make use of optimised bswap from ARIA

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2022-11-30 11:54:34 +00:00
parent 6d23ff60dd
commit 2d0f27d0fc
1 changed files with 1 additions and 40 deletions
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41
library/aria.c
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@ -98,47 +98,8 @@ static inline uint32_t aria_p1( uint32_t x )
* modify byte order: ( A B C D ) -> ( D C B A ), i.e. change endianness * modify byte order: ( A B C D ) -> ( D C B A ), i.e. change endianness
* *
* This is submatrix P3 in [1] Appendix B.1 * This is submatrix P3 in [1] Appendix B.1
*
* Some compilers fail to translate this to a single instruction,
* so let's provide asm versions for common platforms with C fallback.
*/ */
#if defined(MBEDTLS_HAVE_ASM) #define ARIA_P3(x) MBEDTLS_BSWAP32(x)
#if defined(__arm__) /* rev available from v6 up */
/* armcc5 --gnu defines __GNUC__ but doesn't support GNU's extended asm */
#if defined(__GNUC__) && \
( !defined(__ARMCC_VERSION) || __ARMCC_VERSION >= 6000000 ) && \
__ARM_ARCH >= 6
static inline uint32_t aria_p3( uint32_t x )
{
uint32_t r;
__asm( "rev %0, %1" : "=l" (r) : "l" (x) );
return( r );
}
#define ARIA_P3 aria_p3
#elif defined(__ARMCC_VERSION) && __ARMCC_VERSION < 6000000 && \
( __TARGET_ARCH_ARM >= 6 || __TARGET_ARCH_THUMB >= 3 )
static inline uint32_t aria_p3( uint32_t x )
{
uint32_t r;
__asm( "rev r, x" );
return( r );
}
#define ARIA_P3 aria_p3
#endif
#endif /* arm */
#if defined(__GNUC__) && \
defined(__i386__) || defined(__amd64__) || defined( __x86_64__)
static inline uint32_t aria_p3( uint32_t x )
{
__asm( "bswap %0" : "=r" (x) : "0" (x) );
return( x );
}
#define ARIA_P3 aria_p3
#endif /* x86 gnuc */
#endif /* MBEDTLS_HAVE_ASM && GNUC */
#if !defined(ARIA_P3)
#define ARIA_P3(x) ARIA_P2( ARIA_P1 ( x ) )
#endif
/* /*
* ARIA Affine Transform * ARIA Affine Transform