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Add cpu modifiers for aesce.c

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2023-03-03 15:51:07 +08:00
parent 3ef7a6af12
commit 48b999cd6e
1 changed files with 32 additions and 5 deletions
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37
library/aesce.c
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@ -17,6 +17,23 @@
* limitations under the License. * limitations under the License.
*/ */
#if defined(__aarch64__) && !defined(__ARM_FEATURE_CRYPTO) && \
defined(__clang__) && __clang_major__ < 18 && __clang_major__ > 3
/* TODO: Re-consider above after https://reviews.llvm.org/D131064 merged.
*
* The intrinsic declaration are guarded by predefined ACLE macros in clang:
* these are normally only enabled by the -march option on the command line.
* By defining the macros ourselves we gain access to those declarations without
* requiring -march on the command line.
*
* `arm_neon.h` could be included by any header file, so we put these defines
* at the top of this file, before any includes.
*/
#define __ARM_FEATURE_CRYPTO 1
#define NEED_TARGET_OPTIONS
#endif /* __aarch64__ && __clang__ &&
!__ARM_FEATURE_CRYPTO && __clang_major__ < 18 && __clang_major__ > 3 */
#include <string.h> #include <string.h>
#include "common.h" #include "common.h"
@ -30,19 +47,19 @@
# if __clang_major__ < 4 # if __clang_major__ < 4
# error "A more recent Clang is required for MBEDTLS_AESCE_C" # error "A more recent Clang is required for MBEDTLS_AESCE_C"
# endif # endif
# pragma clang attribute push (__attribute__((target("crypto"))), apply_to=function)
# define MBEDTLS_POP_TARGET_PRAGMA
#elif defined(__GNUC__) #elif defined(__GNUC__)
# if __GNUC__ < 6 # if __GNUC__ < 6
# error "A more recent GCC is required for MBEDTLS_AESCE_C" # error "A more recent GCC is required for MBEDTLS_AESCE_C"
# endif # endif
# pragma GCC push_options
# pragma GCC target ("arch=armv8-a+crypto")
# define MBEDTLS_POP_TARGET_PRAGMA
#else #else
# error "Only GCC and Clang supported for MBEDTLS_AESCE_C" # error "Only GCC and Clang supported for MBEDTLS_AESCE_C"
#endif #endif
#if !defined(__ARM_FEATURE_CRYPTO)
# error "`crypto` feature modifier MUST be enabled for MBEDTLS_AESCE_C."
# error "Typical option for GCC and Clang is `-march=armv8-a+crypto`."
#endif /* !__ARM_FEATURE_CRYPTO */
#include <arm_neon.h> #include <arm_neon.h>
#if defined(__linux__) #if defined(__linux__)
@ -252,6 +269,16 @@ int mbedtls_aesce_setkey_enc(unsigned char *rk,
return 0; return 0;
} }
#if defined(MBEDTLS_POP_TARGET_PRAGMA)
#if defined(__clang__)
#pragma clang attribute pop
#elif defined(__GNUC__)
#pragma GCC pop_options
#endif
#undef MBEDTLS_POP_TARGET_PRAGMA
#endif
#endif /* MBEDTLS_HAVE_ARM64 */ #endif /* MBEDTLS_HAVE_ARM64 */
#endif /* MBEDTLS_AESCE_C */ #endif /* MBEDTLS_AESCE_C */