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Improve use of compiler_opaque

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-05-17 17:45:17 +01:00
parent 8f5e5c18d8
commit fe76af20aa
1 changed files with 8 additions and 8 deletions
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16
library/constant_time_impl.h
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@ -151,7 +151,7 @@ static inline mbedtls_ct_condition_t mbedtls_ct_bool_lt(mbedtls_ct_uint_t x, mbe
static inline mbedtls_ct_condition_t mbedtls_ct_bool_ne(mbedtls_ct_uint_t x, mbedtls_ct_uint_t y)
{
/* diff = 0 if x == y, non-zero otherwise */
const mbedtls_ct_uint_t diff = mbedtls_ct_compiler_opaque(x) ^ y;
const mbedtls_ct_uint_t diff = mbedtls_ct_compiler_opaque(x) ^ mbedtls_ct_compiler_opaque(y);
/* all ones if x != y, 0 otherwise */
return mbedtls_ct_bool(diff);
@ -213,12 +213,12 @@ static inline mbedtls_mpi_uint mbedtls_ct_mpi_uint_if(mbedtls_ct_condition_t con
static inline size_t mbedtls_ct_size_if0(mbedtls_ct_condition_t condition, size_t if1)
{
return (size_t) (mbedtls_ct_compiler_opaque(condition) & if1);
return (size_t) (condition & if1);
}
static inline unsigned mbedtls_ct_uint_if0(mbedtls_ct_condition_t condition, unsigned if1)
{
return (unsigned) (mbedtls_ct_compiler_opaque(condition) & if1);
return (unsigned) (condition & if1);
}
#if defined(MBEDTLS_BIGNUM_C)
@ -226,7 +226,7 @@ static inline unsigned mbedtls_ct_uint_if0(mbedtls_ct_condition_t condition, uns
static inline mbedtls_mpi_uint mbedtls_ct_mpi_uint_if0(mbedtls_ct_condition_t condition,
mbedtls_mpi_uint if1)
{
return (mbedtls_mpi_uint) (mbedtls_ct_compiler_opaque(condition) & if1);
return (mbedtls_mpi_uint) (condition & if1);
}
#endif /* MBEDTLS_BIGNUM_C */
@ -252,24 +252,24 @@ static inline mbedtls_ct_condition_t mbedtls_ct_bool_le(mbedtls_ct_uint_t x,
static inline mbedtls_ct_condition_t mbedtls_ct_bool_xor(mbedtls_ct_condition_t x,
mbedtls_ct_condition_t y)
{
return (mbedtls_ct_condition_t) (mbedtls_ct_compiler_opaque(x) ^ mbedtls_ct_compiler_opaque(y));
return (mbedtls_ct_condition_t) (x ^ y);
}
static inline mbedtls_ct_condition_t mbedtls_ct_bool_and(mbedtls_ct_condition_t x,
mbedtls_ct_condition_t y)
{
return (mbedtls_ct_condition_t) (mbedtls_ct_compiler_opaque(x) & mbedtls_ct_compiler_opaque(y));
return (mbedtls_ct_condition_t) (x & y);
}
static inline mbedtls_ct_condition_t mbedtls_ct_bool_or(mbedtls_ct_condition_t x,
mbedtls_ct_condition_t y)
{
return (mbedtls_ct_condition_t) (mbedtls_ct_compiler_opaque(x) | mbedtls_ct_compiler_opaque(y));
return (mbedtls_ct_condition_t) (x | y);
}
static inline mbedtls_ct_condition_t mbedtls_ct_bool_not(mbedtls_ct_condition_t x)
{
return (mbedtls_ct_condition_t) (~mbedtls_ct_compiler_opaque(x));
return (mbedtls_ct_condition_t) (~x);
}
#endif /* MBEDTLS_CONSTANT_TIME_IMPL_H */