/*
- * Copyright 2011-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2011-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
#include <setjmp.h>
#include <signal.h>
#include <openssl/crypto.h>
+#ifdef __APPLE__
+#include <sys/sysctl.h>
+#endif
#include "internal/cryptlib.h"
#include "arm_arch.h"
unsigned int OPENSSL_armcap_P = 0;
+unsigned int OPENSSL_arm_midr = 0;
+unsigned int OPENSSL_armv8_rsa_neonized = 0;
#if __ARM_MAX_ARCH__<7
void OPENSSL_cpuid_setup(void)
void _armv8_pmull_probe(void);
# ifdef __aarch64__
void _armv8_sha512_probe(void);
+unsigned int _armv8_cpuid_probe(void);
# endif
uint32_t _armv7_tick(void);
# include <sys/auxv.h>
# define OSSL_IMPLEMENT_GETAUXVAL
# endif
+# elif defined(__ANDROID_API__)
+/* see https://developer.android.google.cn/ndk/guides/cpu-features */
+# if __ANDROID_API__ >= 18
+# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
+# endif
+# endif
+# if defined(__FreeBSD__)
+# include <sys/param.h>
+# if __FreeBSD_version >= 1200000
+# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
+
+static unsigned long getauxval(unsigned long key)
+{
+ unsigned long val = 0ul;
+
+ if (elf_aux_info((int)key, &val, sizeof(val)) != 0)
+ return 0ul;
+
+ return val;
+}
+# endif
# endif
+/*
+ * Android: according to https://developer.android.com/ndk/guides/cpu-features,
+ * getauxval is supported starting with API level 18
+ */
+# if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ >= 18
+# include <sys/auxv.h>
+# define OSSL_IMPLEMENT_GETAUXVAL
+# endif
+
/*
* ARM puts the feature bits for Crypto Extensions in AT_HWCAP2, whereas
* AArch64 used AT_HWCAP.
# define HWCAP_CE_PMULL (1 << 4)
# define HWCAP_CE_SHA1 (1 << 5)
# define HWCAP_CE_SHA256 (1 << 6)
+# define HWCAP_CPUID (1 << 11)
# define HWCAP_CE_SHA512 (1 << 21)
# endif
return;
trigger = 1;
+ OPENSSL_armcap_P = 0;
+
if ((e = getenv("OPENSSL_armcap"))) {
OPENSSL_armcap_P = (unsigned int)strtoul(e, NULL, 0);
return;
}
-# if defined(__APPLE__) && !defined(__aarch64__)
+# if defined(__APPLE__)
+# if !defined(__aarch64__)
/*
* Capability probing by catching SIGILL appears to be problematic
* on iOS. But since Apple universe is "monocultural", it's actually
* Unified code works because it never triggers SIGILL on Apple
* devices...
*/
-# endif
+# else
+ {
+ unsigned int sha512;
+ size_t len = sizeof(sha512);
- OPENSSL_armcap_P = 0;
+ if (sysctlbyname("hw.optional.armv8_2_sha512", &sha512, &len, NULL, 0) == 0 && sha512 == 1)
+ OPENSSL_armcap_P |= ARMV8_SHA512;
+ }
+# endif
+# endif
# ifdef OSSL_IMPLEMENT_GETAUXVAL
if (getauxval(HWCAP) & HWCAP_NEON) {
# ifdef __aarch64__
if (hwcap & HWCAP_CE_SHA512)
OPENSSL_armcap_P |= ARMV8_SHA512;
+
+ if (hwcap & HWCAP_CPUID)
+ OPENSSL_armcap_P |= ARMV8_CPUID;
# endif
}
# endif
sigaction(SIGILL, &ill_oact, NULL);
sigprocmask(SIG_SETMASK, &oset, NULL);
+
+# ifdef __aarch64__
+ if (OPENSSL_armcap_P & ARMV8_CPUID)
+ OPENSSL_arm_midr = _armv8_cpuid_probe();
+
+ if ((MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72) ||
+ MIDR_IS_CPU_MODEL(OPENSSL_arm_midr, ARM_CPU_IMP_ARM, ARM_CPU_PART_N1)) &&
+ (OPENSSL_armcap_P & ARMV7_NEON)) {
+ OPENSSL_armv8_rsa_neonized = 1;
+ }
+# endif
}
#endif