--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#ifndef OPENSSL_HEADER_CPU_H
+#define OPENSSL_HEADER_CPU_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+// Runtime CPU feature support
+
+
+#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
+// OPENSSL_ia32cap_P contains the Intel CPUID bits when running on an x86 or
+// x86-64 system.
+//
+// Index 0:
+// EDX for CPUID where EAX = 1
+// Bit 20 is always zero
+// Bit 28 is adjusted to reflect whether the data cache is shared between
+// multiple logical cores
+// Bit 30 is used to indicate an Intel CPU
+// Index 1:
+// ECX for CPUID where EAX = 1
+// Bit 11 is used to indicate AMD XOP support, not SDBG
+// Index 2:
+// EBX for CPUID where EAX = 7
+// Index 3 is set to zero.
+//
+// Note: the CPUID bits are pre-adjusted for the OSXSAVE bit and the YMM and XMM
+// bits in XCR0, so it is not necessary to check those.
+extern uint32_t OPENSSL_ia32cap_P[4];
+
+#if defined(BORINGSSL_FIPS)
+const uint32_t *OPENSSL_ia32cap_get(void);
+#else
+static inline const uint32_t *OPENSSL_ia32cap_get(void) {
+ return OPENSSL_ia32cap_P;
+}
+#endif
+
+#endif
+
+#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+
+#if defined(OPENSSL_APPLE)
+// iOS builds use the static ARM configuration.
+#define OPENSSL_STATIC_ARMCAP
+#endif
+
+#if !defined(OPENSSL_STATIC_ARMCAP)
+
+// CRYPTO_is_NEON_capable_at_runtime returns true if the current CPU has a NEON
+// unit. Note that |OPENSSL_armcap_P| also exists and contains the same
+// information in a form that's easier for assembly to use.
+OPENSSL_EXPORT char CRYPTO_is_NEON_capable_at_runtime(void);
+
+// CRYPTO_is_NEON_capable returns true if the current CPU has a NEON unit. If
+// this is known statically then it returns one immediately.
+static inline int CRYPTO_is_NEON_capable(void) {
+ // Only statically skip the runtime lookup on aarch64. On arm, one CPU is
+ // known to have a broken NEON unit which is known to fail with on some
+ // hand-written NEON assembly. For now, continue to apply the workaround even
+ // when the compiler is instructed to freely emit NEON code. See
+ // https://crbug.com/341598 and https://crbug.com/606629.
+#if defined(__ARM_NEON__) && !defined(OPENSSL_ARM)
+ return 1;
+#else
+ return CRYPTO_is_NEON_capable_at_runtime();
+#endif
+}
+
+#if defined(OPENSSL_ARM)
+// CRYPTO_has_broken_NEON returns one if the current CPU is known to have a
+// broken NEON unit. See https://crbug.com/341598.
+OPENSSL_EXPORT int CRYPTO_has_broken_NEON(void);
+
+// CRYPTO_needs_hwcap2_workaround returns one if the ARMv8 AArch32 AT_HWCAP2
+// workaround was needed. See https://crbug.com/boringssl/46.
+OPENSSL_EXPORT int CRYPTO_needs_hwcap2_workaround(void);
+#endif
+
+// CRYPTO_is_ARMv8_AES_capable returns true if the current CPU supports the
+// ARMv8 AES instruction.
+int CRYPTO_is_ARMv8_AES_capable(void);
+
+// CRYPTO_is_ARMv8_PMULL_capable returns true if the current CPU supports the
+// ARMv8 PMULL instruction.
+int CRYPTO_is_ARMv8_PMULL_capable(void);
+
+#else
+
+static inline int CRYPTO_is_NEON_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_NEON) || defined(__ARM_NEON__)
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+static inline int CRYPTO_is_ARMv8_AES_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO)
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+static inline int CRYPTO_is_ARMv8_PMULL_capable(void) {
+#if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO)
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+#endif // OPENSSL_STATIC_ARMCAP
+#endif // OPENSSL_ARM || OPENSSL_AARCH64
+
+#if defined(OPENSSL_PPC64LE)
+
+// CRYPTO_is_PPC64LE_vcrypto_capable returns true iff the current CPU supports
+// the Vector.AES category of instructions.
+int CRYPTO_is_PPC64LE_vcrypto_capable(void);
+
+extern unsigned long OPENSSL_ppc64le_hwcap2;
+
+#endif // OPENSSL_PPC64LE
+
+
+#if defined(__cplusplus)
+} // extern C
+#endif
+
+#endif // OPENSSL_HEADER_CPU_H
git://repos.xcallymotion.com / motion2.git / blobdiff