| /* Copyright (c) 2014, 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/crypto.h> |
| |
| #include <openssl/cpu.h> |
| |
| #include "internal.h" |
| |
| |
| #if !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_STATIC_ARMCAP) && \ |
| (defined(OPENSSL_X86) || defined(OPENSSL_X86_64) || \ |
| defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) || \ |
| defined(OPENSSL_PPC64LE)) |
| // x86, x86_64, the ARMs and ppc64le need to record the result of a |
| // cpuid/getauxval call for the asm to work correctly, unless compiled without |
| // asm code. |
| #define NEED_CPUID |
| |
| #else |
| |
| // Otherwise, don't emit a static initialiser. |
| |
| #if !defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| #define BORINGSSL_NO_STATIC_INITIALIZER |
| #endif |
| |
| #endif /* !OPENSSL_NO_ASM && (OPENSSL_X86 || OPENSSL_X86_64 || |
| OPENSSL_ARM || OPENSSL_AARCH64) */ |
| |
| |
| // The capability variables are defined in this file in order to work around a |
| // linker bug. When linking with a .a, if no symbols in a .o are referenced |
| // then the .o is discarded, even if it has constructor functions. |
| // |
| // This still means that any binaries that don't include some functionality |
| // that tests the capability values will still skip the constructor but, so |
| // far, the init constructor function only sets the capability variables. |
| |
| #if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) |
| |
| // This value must be explicitly initialised to zero in order to work around a |
| // bug in libtool or the linker on OS X. |
| // |
| // If not initialised then it becomes a "common symbol". When put into an |
| // archive, linking on OS X will fail to resolve common symbols. By |
| // initialising it to zero, it becomes a "data symbol", which isn't so |
| // affected. |
| uint32_t OPENSSL_ia32cap_P[4] = {0}; |
| |
| #elif defined(OPENSSL_PPC64LE) |
| |
| unsigned long OPENSSL_ppc64le_hwcap2 = 0; |
| |
| #elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64) |
| |
| #include <openssl/arm_arch.h> |
| |
| #if defined(OPENSSL_STATIC_ARMCAP) |
| |
| uint32_t OPENSSL_armcap_P = |
| #if defined(OPENSSL_STATIC_ARMCAP_NEON) || defined(__ARM_NEON__) |
| ARMV7_NEON | |
| #endif |
| #if defined(OPENSSL_STATIC_ARMCAP_AES) || defined(__ARM_FEATURE_CRYPTO) |
| ARMV8_AES | |
| #endif |
| #if defined(OPENSSL_STATIC_ARMCAP_SHA1) || defined(__ARM_FEATURE_CRYPTO) |
| ARMV8_SHA1 | |
| #endif |
| #if defined(OPENSSL_STATIC_ARMCAP_SHA256) || defined(__ARM_FEATURE_CRYPTO) |
| ARMV8_SHA256 | |
| #endif |
| #if defined(OPENSSL_STATIC_ARMCAP_PMULL) || defined(__ARM_FEATURE_CRYPTO) |
| ARMV8_PMULL | |
| #endif |
| 0; |
| |
| #else |
| uint32_t OPENSSL_armcap_P = 0; |
| #endif |
| |
| #endif |
| |
| #if defined(BORINGSSL_FIPS) |
| // In FIPS mode, the power-on self-test function calls |CRYPTO_library_init| |
| // because we have to ensure that CPUID detection occurs first. |
| #define BORINGSSL_NO_STATIC_INITIALIZER |
| #endif |
| |
| #if defined(OPENSSL_WINDOWS) && !defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| #define OPENSSL_CDECL __cdecl |
| #else |
| #define OPENSSL_CDECL |
| #endif |
| |
| #if defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| static CRYPTO_once_t once = CRYPTO_ONCE_INIT; |
| #elif defined(_MSC_VER) |
| #pragma section(".CRT$XCU", read) |
| static void __cdecl do_library_init(void); |
| __declspec(allocate(".CRT$XCU")) void(*library_init_constructor)(void) = |
| do_library_init; |
| #else |
| static void do_library_init(void) __attribute__ ((constructor)); |
| #endif |
| |
| // do_library_init is the actual initialization function. If |
| // BORINGSSL_NO_STATIC_INITIALIZER isn't defined, this is set as a static |
| // initializer. Otherwise, it is called by CRYPTO_library_init. |
| static void OPENSSL_CDECL do_library_init(void) { |
| // WARNING: this function may only configure the capability variables. See the |
| // note above about the linker bug. |
| #if defined(NEED_CPUID) |
| OPENSSL_cpuid_setup(); |
| #endif |
| } |
| |
| void CRYPTO_library_init(void) { |
| // TODO(davidben): It would be tidier if this build knob could be replaced |
| // with an internal lazy-init mechanism that would handle things correctly |
| // in-library. https://crbug.com/542879 |
| #if defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| CRYPTO_once(&once, do_library_init); |
| #endif |
| } |
| |
| int CRYPTO_is_confidential_build(void) { |
| #if defined(BORINGSSL_CONFIDENTIAL) |
| return 1; |
| #else |
| return 0; |
| #endif |
| } |
| |
| int CRYPTO_has_asm(void) { |
| #if defined(OPENSSL_NO_ASM) |
| return 0; |
| #else |
| return 1; |
| #endif |
| } |
| |
| const char *SSLeay_version(int unused) { |
| return "BoringSSL"; |
| } |
| |
| unsigned long SSLeay(void) { |
| return OPENSSL_VERSION_NUMBER; |
| } |
| |
| int CRYPTO_malloc_init(void) { |
| return 1; |
| } |
| |
| void ENGINE_load_builtin_engines(void) {} |
| |
| int ENGINE_register_all_complete(void) { |
| return 1; |
| } |
| |
| void OPENSSL_load_builtin_modules(void) {} |