--- src/backend/cpu/platform/BasicCpuInfo_arm.cpp.orig	2021-05-16 08:56:58 UTC

+++ src/backend/cpu/platform/BasicCpuInfo_arm.cpp

@@ -26,11 +26,14 @@

 #include <thread>

-#if __ARM_FEATURE_CRYPTO && !defined(__APPLE__)

+#if __ARM_FEATURE_CRYPTO && !(defined(__APPLE__) || defined(__FreeBSD__))

 #   include <sys/auxv.h>

 #   include <asm/hwcap.h>

 #endif

+#if defined (__FreeBSD__)

+#include <machine/armreg.h>

+#endif

 #include "backend/cpu/platform/BasicCpuInfo.h"

 #include "3rdparty/rapidjson/document.h"

@@ -62,8 +65,14 @@ xmrig::BasicCpuInfo::BasicCpuInfo() :

 #   endif

 #   if __ARM_FEATURE_CRYPTO

-#   if !defined(__APPLE__)

+#   if !(defined(__APPLE__) || defined(__FreeBSD__))

     m_flags.set(FLAG_AES, getauxval(AT_HWCAP) & HWCAP_AES);

+#   elif defined(__FreeBSD__)

+    uint64_t id_aa64isar0;

+    id_aa64isar0 = READ_SPECIALREG(id_aa64isar0_el1);

+    if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) == ID_AA64ISAR0_AES_BASE) {

+        m_flags.set(FLAG_AES, true);

+    }

 #   else

     m_flags.set(FLAG_AES, true);

 #   endif