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Prefer intrinsics over asm for AES-NI

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-05-22 11:14:36 +01:00
parent 7f97675b64
commit 6365a681c8
1 changed files with 7 additions and 7 deletions
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14
library/aesni.h
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@ -61,14 +61,14 @@
/* Choose the implementation of AESNI, if one is available. */
#undef MBEDTLS_AESNI_HAVE_CODE
/* To minimize disruption when releasing the intrinsics-based implementation,
* favor the assembly-based implementation if it's available. We intend to
* revise this in a later release of Mbed TLS 3.x. In the long run, we will
* likely remove the assembly implementation. */
#if defined(MBEDTLS_HAVE_X86_64)
#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
#elif defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
/* Favor the intrinsics-based implementation if it's available, for better
* maintainability.
* Performance is about the same (see #7380).
* In the long run, we will likely remove the assembly implementation. */
#if defined(MBEDTLS_AESNI_HAVE_INTRINSICS)
#define MBEDTLS_AESNI_HAVE_CODE 2 // via intrinsics
#elif defined(MBEDTLS_HAVE_X86_64)
#define MBEDTLS_AESNI_HAVE_CODE 1 // via assembly
#endif
#if defined(MBEDTLS_AESNI_HAVE_CODE)