Halve size of mbedtls_error_pair_t
All PSA crypto error codes fit comfortably in 16 bits and we have no plans to ever change this. So use 16 bits to store them, which reduces mbedtls_error_pair_t from 8 bytes to 4 bytes. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
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1 changed files with 5 additions and 1 deletions
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@ -345,7 +345,11 @@ extern mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state;
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#endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */
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typedef struct {
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psa_status_t psa_status;
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/* Error codes used by PSA crypto are in -255..-128, fitting in 16 bits. */
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int16_t psa_status;
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/* Error codes used by Mbed TLS are in one of the ranges
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* -127..-1 (low-level) or (-128) * (128..511) (high-level),
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* fitting in 16 bits. */
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int16_t mbedtls_error;
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} mbedtls_error_pair_t;
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