/* 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_grpc/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: // ECX for CPUID where EAX = 7 // // 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) && !defined(BORINGSSL_SHARED_LIBRARY) const uint32_t *OPENSSL_ia32cap_get(void); #else OPENSSL_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 int CRYPTO_is_NEON_capable_at_runtime(void); // CRYPTO_is_ARMv8_AES_capable_at_runtime returns true if the current CPU // supports the ARMv8 AES instruction. int CRYPTO_is_ARMv8_AES_capable_at_runtime(void); // CRYPTO_is_ARMv8_PMULL_capable_at_runtime returns true if the current CPU // supports the ARMv8 PMULL instruction. int CRYPTO_is_ARMv8_PMULL_capable_at_runtime(void); #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 #endif // !OPENSSL_STATIC_ARMCAP // CRYPTO_is_NEON_capable returns true if the current CPU has a NEON unit. If // this is known statically, it is a constant inline function. OPENSSL_INLINE int CRYPTO_is_NEON_capable(void) { #if defined(__ARM_NEON__) || defined(__ARM_NEON) || \ defined(OPENSSL_STATIC_ARMCAP_NEON) return 1; #elif defined(OPENSSL_STATIC_ARMCAP) return 0; #else return CRYPTO_is_NEON_capable_at_runtime(); #endif } OPENSSL_INLINE int CRYPTO_is_ARMv8_AES_capable(void) { #if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO) return 1; #elif defined(OPENSSL_STATIC_ARMCAP) return 0; #else return CRYPTO_is_ARMv8_AES_capable_at_runtime(); #endif } OPENSSL_INLINE int CRYPTO_is_ARMv8_PMULL_capable(void) { #if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO) return 1; #elif defined(OPENSSL_STATIC_ARMCAP) return 0; #else return CRYPTO_is_ARMv8_PMULL_capable_at_runtime(); #endif } #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(BORINGSSL_DISPATCH_TEST) // Runtime CPU dispatch testing support // BORINGSSL_function_hit is an array of flags. The following functions will // set these flags if BORINGSSL_DISPATCH_TEST is defined. // 0: aes_hw_ctr32_encrypt_blocks // 1: aes_hw_encrypt // 2: aesni_gcm_encrypt // 3: aes_hw_set_encrypt_key // 4: vpaes_encrypt // 5: vpaes_set_encrypt_key extern uint8_t BORINGSSL_function_hit[7]; #endif // BORINGSSL_DISPATCH_TEST #if defined(__cplusplus) } // extern C #endif #endif // OPENSSL_HEADER_CPU_H