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Fix hwcap detection on 32-bit Arm

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Dave Rodgman 2023-10-10 13:04:07 +01:00
parent 94a634db96
commit 5d4ef83e01
1 changed files with 7 additions and 1 deletions
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8
library/sha256.c
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@ -126,6 +126,7 @@
# if defined(__linux__) # if defined(__linux__)
/* Our preferred method of detection is getauxval() */ /* Our preferred method of detection is getauxval() */
# include <sys/auxv.h> # include <sys/auxv.h>
# include <asm/hwcap.h>
# endif # endif
/* Use SIGILL on Unix, and fall back to it on Linux */ /* Use SIGILL on Unix, and fall back to it on Linux */
# include <signal.h> # include <signal.h>
@ -146,11 +147,16 @@
* Capability detection code comes early, so we can disable * Capability detection code comes early, so we can disable
* MBEDTLS_SHA256_USE_ARMV8_CRYPTO_IF_PRESENT if no detection mechanism found * MBEDTLS_SHA256_USE_ARMV8_CRYPTO_IF_PRESENT if no detection mechanism found
*/ */
#if defined(HWCAP_SHA2) #if defined(MBEDTLS_ARCH_IS_ARM64) && defined(HWCAP_SHA2)
static int mbedtls_a64_crypto_sha256_determine_support(void) static int mbedtls_a64_crypto_sha256_determine_support(void)
{ {
return (getauxval(AT_HWCAP) & HWCAP_SHA2) ? 1 : 0; return (getauxval(AT_HWCAP) & HWCAP_SHA2) ? 1 : 0;
} }
#elif defined(MBEDTLS_ARCH_IS_ARM32) && defined(HWCAP2_SHA2)
static int mbedtls_a64_crypto_sha256_determine_support(void)
{
return (getauxval(AT_HWCAP2) & HWCAP2_SHA2) ? 1 : 0;
}
#elif defined(__APPLE__) #elif defined(__APPLE__)
static int mbedtls_a64_crypto_sha256_determine_support(void) static int mbedtls_a64_crypto_sha256_determine_support(void)
{ {