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ring 0.17.14

An experiment.
Documentation 
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// Copyright 2023 The BoringSSL Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#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
// <ring-core/base.h> and <ring-core/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
// All of following architectures are only supported when `__BYTE_ORDER__` can be used to detect
// endianness (in crypto/internal.h).
#elif !defined(__BYTE_ORDER__)
#error "Cannot determine endianness because __BYTE_ORDER__ is not defined"
// Targets are assumed to be little-endian unless __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__.
#elif !(defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)) && \
      !(defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
#error "Unsupported endianness"
#elif defined(__LP64__)
#define OPENSSL_64_BIT
#elif defined(__ILP32__)
#define OPENSSL_32_BIT
// Versions of GCC before 10.0 didn't define `__ILP32__` for all 32-bit targets.
#elif defined(__MIPSEL__) || defined(__MIPSEB__) || defined(__PPC__) || defined(__powerpc__) || defined(__csky__) || defined(__XTENSA__)
#define OPENSSL_32_BIT
#else
#error "Unknown target CPU"
#endif

#if defined(__APPLE__)
#define OPENSSL_APPLE
#endif

#if defined(_WIN32)
#define OPENSSL_WINDOWS
#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

#if !defined(OPENSSL_X86_64) && !defined(OPENSSL_AARCH64)
#define OPENSSL_SMALL
#endif

#endif  // OPENSSL_HEADER_TARGET_H