/* Copyright (c) 2023, 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. */ #ifndef OPENSSL_HEADER_TARGET_H #define OPENSSL_HEADER_TARGET_H // Preprocessor symbols that define the target platform. // // This file may be included in C, C++, and assembler and must be compatible // with each environment. It is separated out only to share code between // <openssl/base.h> and <openssl/asm_base.h>. Prefer to include those headers // instead. #if defined(__x86_64) || defined(_M_AMD64) || defined(_M_X64) #define OPENSSL_64_BIT #define OPENSSL_X86_64 #elif defined(__x86) || defined(__i386) || defined(__i386__) || defined(_M_IX86) #define OPENSSL_32_BIT #define OPENSSL_X86 #elif defined(__AARCH64EL__) || defined(_M_ARM64) #define OPENSSL_64_BIT #define OPENSSL_AARCH64 #elif defined(__ARMEL__) || defined(_M_ARM) #define OPENSSL_32_BIT #define OPENSSL_ARM #elif defined(__MIPSEL__) && !defined(__LP64__) #define OPENSSL_32_BIT #define OPENSSL_MIPS #elif defined(__MIPSEL__) && defined(__LP64__) #define OPENSSL_64_BIT #define OPENSSL_MIPS64 #elif defined(__riscv) && __SIZEOF_POINTER__ == 8 #define OPENSSL_64_BIT #define OPENSSL_RISCV64 #elif defined(__riscv) && __SIZEOF_POINTER__ == 4 #define OPENSSL_32_BIT #elif defined(__pnacl__) #define OPENSSL_32_BIT #define OPENSSL_PNACL #elif defined(__wasm__) #define OPENSSL_32_BIT #elif defined(__asmjs__) #define OPENSSL_32_BIT #elif defined(__myriad2__) #define OPENSSL_32_BIT #else // The list above enumerates the platforms that BoringSSL supports. For these // platforms we keep a reasonable bar of not breaking them: automated test // coverage, for one, but also we need access to these types for machines for // fixing them. // // However, we know that anything that seems to work will soon be expected // to work and, quickly, the implicit expectation is that every machine will // always work. So this list serves to mark the boundary of what we guarantee. // Of course, you can run the code any many more machines, but then you're // taking on the burden of fixing it and, if you're doing that, then you must // be able to carry local patches. In which case patching this list is trivial. // // BoringSSL will only possibly work on standard 32-bit and 64-bit // two's-complement, little-endian architectures. Functions will not produce // the correct answer on other systems. Run the crypto_test binary, notably // crypto/compiler_test.cc, before trying a new architecture. #error "Unknown target CPU" #endif #if defined(__APPLE__) #define OPENSSL_APPLE #endif #if defined(_WIN32) #define OPENSSL_WINDOWS #endif // Trusty and Android baremetal aren't Linux but currently define __linux__. // As a workaround, we exclude them here. // We also exclude nanolibc/CrOS EC. nanolibc/CrOS EC sometimes build for a // non-Linux target (which should not define __linux__), but also sometimes // build for Linux. Although technically running in Linux userspace, this lacks // all the libc APIs we'd normally expect on Linux, so we treat it as a // non-Linux target. // // TODO(b/169780122): Remove this workaround once Trusty no longer defines it. // TODO(b/291101350): Remove this workaround once Android baremetal no longer // defines it. #if defined(__linux__) && !defined(__TRUSTY__) && \ !defined(ANDROID_BAREMETAL) && !defined(OPENSSL_NANOLIBC) && \ !defined(CROS_EC) #define OPENSSL_LINUX #endif #if defined(__Fuchsia__) #define OPENSSL_FUCHSIA #endif // Trusty is Android's TEE target. See // https://source.android.com/docs/security/features/trusty // // Defining this on any other platform is not supported. Other embedded // platforms must introduce their own defines. #if defined(__TRUSTY__) #define OPENSSL_TRUSTY #define OPENSSL_NO_FILESYSTEM #define OPENSSL_NO_POSIX_IO #define OPENSSL_NO_SOCK #define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED #endif // nanolibc is a particular minimal libc implementation. Defining this on any // other platform is not supported. Other embedded platforms must introduce // their own defines. #if defined(OPENSSL_NANOLIBC) #define OPENSSL_NO_FILESYSTEM #define OPENSSL_NO_POSIX_IO #define OPENSSL_NO_SOCK #define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED #endif // Android baremetal is an embedded target that uses a subset of bionic. // Defining this on any other platform is not supported. Other embedded // platforms must introduce their own defines. #if defined(ANDROID_BAREMETAL) #define OPENSSL_NO_FILESYSTEM #define OPENSSL_NO_POSIX_IO #define OPENSSL_NO_SOCK #define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED #endif // CROS_EC is an embedded target for ChromeOS Embedded Controller. Defining // this on any other platform is not supported. Other embedded platforms must // introduce their own defines. // // https://chromium.googlesource.com/chromiumos/platform/ec/+/HEAD/README.md #if defined(CROS_EC) #define OPENSSL_NO_FILESYSTEM #define OPENSSL_NO_POSIX_IO #define OPENSSL_NO_SOCK #define OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED #endif // Zephyr is an open source RTOS, optimized for embedded devices. // Defining this on any other platform is not supported. Other embedded // platforms must introduce their own defines. // // Zephyr supports multithreading with cooperative and preemptive scheduling. // It also implements POSIX Threads (pthread) API, so it's not necessary to // implement BoringSSL internal threading API using some custom API. // // https://www.zephyrproject.org/ #if defined(__ZEPHYR__) #define OPENSSL_NO_FILESYSTEM #define OPENSSL_NO_POSIX_IO #define OPENSSL_NO_SOCK #endif #if defined(__ANDROID_API__) #define OPENSSL_ANDROID #endif #if defined(__FreeBSD__) #define OPENSSL_FREEBSD #endif #if defined(__OpenBSD__) #define OPENSSL_OPENBSD #endif // BoringSSL requires platform's locking APIs to make internal global state // thread-safe, including the PRNG. On some single-threaded embedded platforms, // locking APIs may not exist, so this dependency may be disabled with the // following build flag. // // IMPORTANT: Doing so means the consumer promises the library will never be // used in any multi-threaded context. It causes BoringSSL to be globally // thread-unsafe. Setting it inappropriately will subtly and unpredictably // corrupt memory and leak secret keys. // // Do not set this flag on any platform where threads are possible. BoringSSL // maintainers will not provide support for any consumers that do so. Changes // which break such unsupported configurations will not be reverted. #if !defined(OPENSSL_NO_THREADS_CORRUPT_MEMORY_AND_LEAK_SECRETS_IF_THREADED) #define OPENSSL_THREADS #endif #if defined(BORINGSSL_UNSAFE_FUZZER_MODE) && \ !defined(BORINGSSL_UNSAFE_DETERMINISTIC_MODE) #define BORINGSSL_UNSAFE_DETERMINISTIC_MODE #endif #if defined(__has_feature) #if __has_feature(address_sanitizer) #define OPENSSL_ASAN #endif #if __has_feature(thread_sanitizer) #define OPENSSL_TSAN #endif #if __has_feature(memory_sanitizer) #define OPENSSL_MSAN #define OPENSSL_ASM_INCOMPATIBLE #endif #if __has_feature(hwaddress_sanitizer) #define OPENSSL_HWASAN #endif #endif // Disable 32-bit Arm assembly on Apple platforms. The last iOS version that // supported 32-bit Arm was iOS 10. #if defined(OPENSSL_APPLE) && defined(OPENSSL_ARM) #define OPENSSL_ASM_INCOMPATIBLE #endif #if defined(OPENSSL_ASM_INCOMPATIBLE) #undef OPENSSL_ASM_INCOMPATIBLE #if !defined(OPENSSL_NO_ASM) #define OPENSSL_NO_ASM #endif #endif // OPENSSL_ASM_INCOMPATIBLE #endif // OPENSSL_HEADER_TARGET_H
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