lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-29 11:41:15 +03:00
Code Activity

Merge pull request #7630 from daverodgman/prefer-intrinsics

Browse Source 
Prefer intrinsics over asm for AES-NI
This commit is contained in:
Dave Rodgman
2023-06-30 11:39:38 +01:00
committed by GitHub
parent 2d07a72b35 3d9af4734f
commit a2c1a387e4
3 changed files with 66 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
library/aes.c
View File

@ -1824,6 +1824,13 @@ int mbedtls_aes_self_test(int verbose)
} else
#endif
#if defined(MBEDTLS_AESNI_HAVE_CODE)
#if MBEDTLS_AESNI_HAVE_CODE == 1
mbedtls_printf(" AES note: AESNI code present (assembly implementation).\n");
#elif MBEDTLS_AESNI_HAVE_CODE == 2
mbedtls_printf(" AES note: AESNI code present (intrinsics implementation).\n");
#else
#error Unrecognised value for MBEDTLS_AESNI_HAVE_CODE
#endif
if (mbedtls_aesni_has_support(MBEDTLS_AESNI_AES)) {
mbedtls_printf(" AES note: using AESNI.\n");
} else

18
library/aesni.h
View File

@ -59,16 +59,16 @@
#define MBEDTLS_AESNI_HAVE_INTRINSICS
#endif
/* 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)
/* Choose the implementation of AESNI, if one is available.
*
* 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)