X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=crypto%2Fcryptlib.c;h=eb24b27808300c978d041691d5bca98335a40ad1;hb=1f5e0f92808b06cb914f69ced71eccd830fb67e3;hp=aaa3fce4fbcfea17aa46179088e4695a7dbf9f31;hpb=b1a07c38540105077878ad80a6a87c96fdbc18f1;p=openssl.git diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c index aaa3fce4fb..eb24b27808 100644 --- a/crypto/cryptlib.c +++ b/crypto/cryptlib.c @@ -1,118 +1,14 @@ -/* ==================================================================== - * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. +/* + * Copyright 1998-2017 The OpenSSL Project Authors. All Rights Reserved. + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved * - * 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 above 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 acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED 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 OpenSSL PROJECT OR - * ITS 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. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -/* 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.] - */ -/* ==================================================================== - * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * ECDH support in OpenSSL originally developed by - * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ +#include "e_os.h" #include "internal/cryptlib_int.h" #include @@ -121,10 +17,6 @@ defined(_M_AMD64) || defined(_M_X64) extern unsigned int OPENSSL_ia32cap_P[4]; -unsigned int *OPENSSL_ia32cap_loc(void) -{ - return OPENSSL_ia32cap_P; -} # if defined(OPENSSL_CPUID_OBJ) && !defined(OPENSSL_NO_ASM) && !defined(I386_ONLY) #include @@ -150,12 +42,24 @@ void OPENSSL_cpuid_setup(void) if (!sscanf(env + off, "%lli", (long long *)&vec)) vec = strtoul(env + off, NULL, 0); # endif - if (off) - vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~vec; - else if (env[0] == ':') + if (off) { + IA32CAP mask = vec; + vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P) & ~mask; + if (mask & (1<<24)) { + /* + * User disables FXSR bit, mask even other capabilities + * that operate exclusively on XMM, so we don't have to + * double-check all the time. We mask PCLMULQDQ, AMD XOP, + * AES-NI and AVX. Formally speaking we don't have to + * do it in x86_64 case, but we can safely assume that + * x86_64 users won't actually flip this flag. + */ + vec &= ~((IA32CAP)(1<<1|1<<11|1<<25|1<<28) << 32); + } + } else if (env[0] == ':') { vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P); + } - OPENSSL_ia32cap_P[2] = 0; if ((env = strchr(env, ':'))) { unsigned int vecx; env++; @@ -165,9 +69,12 @@ void OPENSSL_cpuid_setup(void) OPENSSL_ia32cap_P[2] &= ~vecx; else OPENSSL_ia32cap_P[2] = vecx; + } else { + OPENSSL_ia32cap_P[2] = 0; } - } else + } else { vec = OPENSSL_ia32_cpuid(OPENSSL_ia32cap_P); + } /* * |(1<<10) sets a reserved bit to signal that variable @@ -180,12 +87,6 @@ void OPENSSL_cpuid_setup(void) # else unsigned int OPENSSL_ia32cap_P[4]; # endif - -#else -unsigned int *OPENSSL_ia32cap_loc(void) -{ - return NULL; -} #endif int OPENSSL_NONPIC_relocated = 0; #if !defined(OPENSSL_CPUID_SETUP) && !defined(OPENSSL_CPUID_OBJ) @@ -277,7 +178,13 @@ void OPENSSL_showfatal(const char *fmta, ...) va_list ap; TCHAR buf[256]; const TCHAR *fmt; -# ifdef STD_ERROR_HANDLE /* what a dirty trick! */ + /* + * First check if it's a console application, in which case the + * error message would be printed to standard error. + * Windows CE does not have a concept of a console application, + * so we need to guard the check. + */ +# ifdef STD_ERROR_HANDLE HANDLE h; if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL && @@ -416,26 +323,17 @@ void OPENSSL_die(const char *message, const char *file, int line) #endif } -/* volatile unsigned char* pointers are there because - * 1. Accessing a variable declared volatile via a pointer - * that lacks a volatile qualifier causes undefined behavior. - * 2. When the variable itself is not volatile the compiler is - * not required to keep all those reads and can convert - * this into canonical memcmp() which doesn't read the whole block. - * Pointers to volatile resolve the first problem fully. The second - * problem cannot be resolved in any Standard-compliant way but this - * works the problem around. Compilers typically react to - * pointers to volatile by preserving the reads and writes through them. - * The latter is not required by the Standard if the memory pointed to - * is not volatile. - * Pointers themselves are volatile in the function signature to work - * around a subtle bug in gcc 4.6+ which causes writes through - * pointers to volatile to not be emitted in some rare, - * never needed in real life, pieces of code. +#if !defined(OPENSSL_CPUID_OBJ) +/* + * The volatile is used to to ensure that the compiler generates code that reads + * all values from the array and doesn't try to optimize this away. The standard + * doesn't actually require this behavior if the original data pointed to is + * not volatile, but compilers do this in practice anyway. + * + * There are also assembler versions of this function. */ -int CRYPTO_memcmp(const volatile void * volatile in_a, - const volatile void * volatile in_b, - size_t len) +# undef CRYPTO_memcmp +int CRYPTO_memcmp(const void * in_a, const void * in_b, size_t len) { size_t i; const volatile unsigned char *a = in_a; @@ -447,3 +345,4 @@ int CRYPTO_memcmp(const volatile void * volatile in_a, return x; } +#endif