| David Benjamin | a70c75c | 2014-09-11 19:11:15 -0400 | [diff] [blame] | 1 | /* Copyright (c) 2014, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | #include <openssl/crypto.h> |
| 16 | |
| 17 | #include "internal.h" |
| 18 | |
| 19 | |
| 20 | /* Currently, the only configurations which require a static initializer are x86 |
| 21 | * and x86_64. Don't bother emitting one in other cases. */ |
| 22 | #if !defined(OPENSSL_X86) && !defined(OPENSSL_X86_64) && \ |
| 23 | !defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| 24 | #define BORINGSSL_NO_STATIC_INITIALIZER |
| 25 | #endif |
| 26 | |
| 27 | #if defined(OPENSSL_WINDOWS) |
| 28 | #define OPENSSL_CDECL __cdecl |
| 29 | #else |
| 30 | #define OPENSSL_CDECL |
| 31 | #endif |
| 32 | |
| 33 | #if !defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| 34 | #if !defined(OPENSSL_WINDOWS) |
| 35 | static void do_library_init(void) __attribute__ ((constructor)); |
| 36 | #else |
| 37 | #pragma section(".CRT$XCU", read) |
| 38 | static void __cdecl do_library_init(void); |
| 39 | __declspec(allocate(".CRT$XCU")) void(*library_init_constructor)(void) = |
| 40 | do_library_init; |
| 41 | #endif |
| 42 | #endif /* !BORINGSSL_NO_STATIC_INITIALIZER */ |
| 43 | |
| 44 | /* do_library_init is the actual initialization function. If |
| 45 | * BORINGSSL_NO_STATIC_INITIALIZER isn't defined, this is set as a static |
| 46 | * initializer. Otherwise, it is called by CRYPTO_library_init. */ |
| 47 | static void OPENSSL_CDECL do_library_init(void) { |
| 48 | #if defined(OPENSSL_X86) || defined(OPENSSL_X86_64) |
| 49 | OPENSSL_cpuid_setup(); |
| 50 | #endif |
| 51 | } |
| 52 | |
| 53 | void CRYPTO_library_init(void) { |
| 54 | /* TODO(davidben): It would be tidier if this build knob could be replaced |
| 55 | * with an internal lazy-init mechanism that would handle things correctly |
| 56 | * in-library. */ |
| 57 | #if defined(BORINGSSL_NO_STATIC_INITIALIZER) |
| 58 | do_library_init(); |
| 59 | #endif |
| 60 | } |