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Ensure constant values not known to compiler

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-07-14 13:44:22 +01:00
parent a02b36886c
commit fba559822f
1 changed files with 4 additions and 4 deletions
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8
library/constant_time_internal.h
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@ -74,21 +74,21 @@
typedef size_t mbedtls_ct_condition_t; typedef size_t mbedtls_ct_condition_t;
typedef size_t mbedtls_ct_uint_t; typedef size_t mbedtls_ct_uint_t;
typedef ptrdiff_t mbedtls_ct_int_t; typedef ptrdiff_t mbedtls_ct_int_t;
#define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) SIZE_MAX) #define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) mbedtls_ct_compiler_opaque(SIZE_MAX))
#elif (SIZE_MAX > 0xffffffff) || defined(MBEDTLS_HAVE_INT64) #elif (SIZE_MAX > 0xffffffff) || defined(MBEDTLS_HAVE_INT64)
/* 32-bit < pointer size <= 64-bit, or 64-bit MPI */ /* 32-bit < pointer size <= 64-bit, or 64-bit MPI */
typedef uint64_t mbedtls_ct_condition_t; typedef uint64_t mbedtls_ct_condition_t;
typedef uint64_t mbedtls_ct_uint_t; typedef uint64_t mbedtls_ct_uint_t;
typedef int64_t mbedtls_ct_int_t; typedef int64_t mbedtls_ct_int_t;
#define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) UINT64_MAX) #define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) mbedtls_ct_compiler_opaque(UINT64_MAX))
#else #else
/* Pointer size <= 32-bit, and no 64-bit MPIs */ /* Pointer size <= 32-bit, and no 64-bit MPIs */
typedef uint32_t mbedtls_ct_condition_t; typedef uint32_t mbedtls_ct_condition_t;
typedef uint32_t mbedtls_ct_uint_t; typedef uint32_t mbedtls_ct_uint_t;
typedef int32_t mbedtls_ct_int_t; typedef int32_t mbedtls_ct_int_t;
#define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) UINT32_MAX) #define MBEDTLS_CT_TRUE ((mbedtls_ct_condition_t) mbedtls_ct_compiler_opaque(UINT32_MAX))
#endif #endif
#define MBEDTLS_CT_FALSE ((mbedtls_ct_condition_t) 0) #define MBEDTLS_CT_FALSE ((mbedtls_ct_condition_t) mbedtls_ct_compiler_opaque(0))
/* constant_time_impl.h contains all the static inline implementations, /* constant_time_impl.h contains all the static inline implementations,
* so that constant_time_internal.h is more readable. * so that constant_time_internal.h is more readable.