Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc-cloned / deps / grpc / third_party / boringssl / crypto / cpu-aarch64-linux.c

diff --git a/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/cpu-aarch64-linux.c b/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/cpu-aarch64-linux.c
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+++ b/legacy-libs/grpc-cloned/deps/grpc/third_party/boringssl/crypto/cpu-aarch64-linux.c
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+/* Copyright (c) 2016, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/cpu.h>
+
+#if defined(OPENSSL_AARCH64) && defined(OPENSSL_LINUX) && \
+    !defined(OPENSSL_STATIC_ARMCAP)
+
+#include <sys/auxv.h>
+
+#include <openssl/arm_arch.h>
+
+#include "internal.h"
+
+
+extern uint32_t OPENSSL_armcap_P;
+
+void OPENSSL_cpuid_setup(void) {
+  unsigned long hwcap = getauxval(AT_HWCAP);
+
+  // See /usr/include/asm/hwcap.h on an aarch64 installation for the source of
+  // these values.
+  static const unsigned long kNEON = 1 << 1;
+  static const unsigned long kAES = 1 << 3;
+  static const unsigned long kPMULL = 1 << 4;
+  static const unsigned long kSHA1 = 1 << 5;
+  static const unsigned long kSHA256 = 1 << 6;
+
+  if ((hwcap & kNEON) == 0) {
+    // Matching OpenSSL, if NEON is missing, don't report other features
+    // either.
+    return;
+  }
+
+  OPENSSL_armcap_P |= ARMV7_NEON;
+
+  if (hwcap & kAES) {
+    OPENSSL_armcap_P |= ARMV8_AES;
+  }
+  if (hwcap & kPMULL) {
+    OPENSSL_armcap_P |= ARMV8_PMULL;
+  }
+  if (hwcap & kSHA1) {
+    OPENSSL_armcap_P |= ARMV8_SHA1;
+  }
+  if (hwcap & kSHA256) {
+    OPENSSL_armcap_P |= ARMV8_SHA256;
+  }
+}
+
+#endif  // OPENSSL_AARCH64 && !OPENSSL_STATIC_ARMCAP