kevin/libsodium
1
Fork 0
mirror of https://github.com/jedisct1/libsodium.git synced 2024-12-24 04:25:10 -07:00
Code Releases Wiki Activity

Detect NEON and ARMCRYPTO on ARM32

Browse Source 
Which doesn't mean that the compiler will support these opcodes, so
we need to autoconf magic as well.
This commit is contained in:
Frank Denis 2019-10-22 23:03:28 +02:00
parent 456a57f235
commit 1910ca83d8
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/libsodium/sodium/runtime.c
View File

@ -71,6 +71,8 @@ _sodium_runtime_arm_cpu_features(CPUFeatures * const cpu_features)
(android_getCpuFeatures() & ANDROID_CPU_ARM_FEATURE_NEON) != 0x0;
#elif defined(HAVE_GETAUXVAL) && defined(AT_HWCAP) && defined(__aarch64__)
cpu_features->has_neon = (getauxval(AT_HWCAP) & (1L << 1)) != 0;
#elif defined(HAVE_GETAUXVAL) && defined(AT_HWCAP) && defined(__arm__)
cpu_features->has_neon = (getauxval(AT_HWCAP) & (1L << 12)) != 0;
#endif
if (cpu_features->has_neon == 0) {
@ -98,6 +100,8 @@ _sodium_runtime_arm_cpu_features(CPUFeatures * const cpu_features)
(android_getCpuFeatures() & ANDROID_CPU_ARM_FEATURE_AES) != 0x0;
#elif defined(HAVE_GETAUXVAL) && defined(AT_HWCAP) && defined(__aarch64__)
cpu_features->has_armcrypto_aes = (getauxval(AT_HWCAP) & (1L << 3)) != 0;
#elif defined(HAVE_GETAUXVAL) && defined(AT_HWCAP) && defined(__arm__)
cpu_features->has_armcrypto_aes = (getauxval(AT_HWCAP2) & (1L << 0)) != 0;
#endif
return 0;