From d9e397b599b13d642138480a28c14db7a136bf05 Mon Sep 17 00:00:00 2001 From: Adam Langley Date: Thu, 22 Jan 2015 14:27:53 -0800 Subject: Initial commit of BoringSSL for Android. --- src/include/openssl/cpu.h | 122 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 src/include/openssl/cpu.h (limited to 'src/include/openssl/cpu.h') diff --git a/src/include/openssl/cpu.h b/src/include/openssl/cpu.h new file mode 100644 index 0000000..79441ae --- /dev/null +++ b/src/include/openssl/cpu.h @@ -0,0 +1,122 @@ +/* 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 + +#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 30 is used to indicate an Intel CPU + * Bit 20 is used to indicate RC4_CHAR + * Index 1: + * ECX for CPUID where EAX = 1 + * Index 2: + * EBX 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]; +#endif + +#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) +/* CRYPTO_is_NEON_capable 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(void); + +/* CRYPTO_set_NEON_capable sets the return value of |CRYPTO_is_NEON_capable|. + * By default, unless the code was compiled with |-mfpu=neon|, NEON is assumed + * not to be present. It is not autodetected. Calling this with a zero + * argument also causes |CRYPTO_is_NEON_functional| to return false. */ +OPENSSL_EXPORT void CRYPTO_set_NEON_capable(char neon_capable); + +/* CRYPTO_is_NEON_functional returns true if the current CPU has a /working/ + * NEON unit. Some phones have a NEON unit, but the Poly1305 NEON code causes + * it to fail. See https://code.google.com/p/chromium/issues/detail?id=341598 */ +OPENSSL_EXPORT char CRYPTO_is_NEON_functional(void); + +/* CRYPTO_set_NEON_functional sets the "NEON functional" flag. For + * |CRYPTO_is_NEON_functional| to return true, both this flag and the NEON flag + * must be true. By default NEON is assumed to be functional if the code was + * compiled with |-mfpu=neon| or if |CRYPTO_set_NEON_capable| has been called + * with a non-zero argument. */ +OPENSSL_EXPORT void CRYPTO_set_NEON_functional(char neon_functional); +#endif /* OPENSSL_ARM */ + + +#if defined(__cplusplus) +} /* extern C */ +#endif + +#endif /* OPENSSL_HEADER_CPU_H */ -- cgit v1.1