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1b80be352b
Recently, Chromium added -fsanitize=alignment for `is_ubsan=true`, and due to this, unaligned memory access was found in several places, and chromium roll is currently blocked. Modify unaligned memory access in rtc_base/byte_order.h to use memcpy. Since libaom and libsrtp perform unaligned memory accesses, add them to the suppression list. Also, remove any mention of yasm from the UBSAN suppression list, as yasm is no longer used. Bug: chromium:1057551 Change-Id: I4961b66831750f4fa7b6de0b80b2052fe6ef27c5 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/286200 Commit-Queue: Daniel.L (Byoungchan) Lee <daniel.l@hpcnt.com> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38806}
212 lines
5.1 KiB
C++
212 lines
5.1 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_BYTE_ORDER_H_
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#define RTC_BASE_BYTE_ORDER_H_
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#include <stdint.h>
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#include <cstring>
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#if defined(WEBRTC_POSIX) && !defined(__native_client__)
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#include <arpa/inet.h>
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#endif
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#include "rtc_base/system/arch.h"
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#if defined(WEBRTC_MAC)
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#include <libkern/OSByteOrder.h>
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#define htobe16(v) OSSwapHostToBigInt16(v)
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#define htobe32(v) OSSwapHostToBigInt32(v)
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#define htobe64(v) OSSwapHostToBigInt64(v)
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#define be16toh(v) OSSwapBigToHostInt16(v)
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#define be32toh(v) OSSwapBigToHostInt32(v)
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#define be64toh(v) OSSwapBigToHostInt64(v)
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#define htole16(v) OSSwapHostToLittleInt16(v)
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#define htole32(v) OSSwapHostToLittleInt32(v)
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#define htole64(v) OSSwapHostToLittleInt64(v)
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#define le16toh(v) OSSwapLittleToHostInt16(v)
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#define le32toh(v) OSSwapLittleToHostInt32(v)
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#define le64toh(v) OSSwapLittleToHostInt64(v)
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#elif defined(WEBRTC_WIN) || defined(__native_client__)
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#if defined(WEBRTC_WIN)
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#include <stdlib.h>
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#include <winsock2.h>
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#else
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#include <netinet/in.h>
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#endif // defined(WEBRTC_WIN)
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#if defined(WEBRTC_ARCH_LITTLE_ENDIAN)
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#define htobe16(v) htons(v)
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#define htobe32(v) htonl(v)
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#define be16toh(v) ntohs(v)
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#define be32toh(v) ntohl(v)
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#define htole16(v) (v)
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#define htole32(v) (v)
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#define htole64(v) (v)
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#define le16toh(v) (v)
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#define le32toh(v) (v)
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#define le64toh(v) (v)
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#if defined(WEBRTC_WIN)
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#define htobe64(v) _byteswap_uint64(v)
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#define be64toh(v) _byteswap_uint64(v)
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#endif // defined(WEBRTC_WIN)
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#if defined(__native_client__)
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#define htobe64(v) __builtin_bswap64(v)
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#define be64toh(v) __builtin_bswap64(v)
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#endif // defined(__native_client__)
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#elif defined(WEBRTC_ARCH_BIG_ENDIAN)
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#define htobe16(v) (v)
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#define htobe32(v) (v)
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#define be16toh(v) (v)
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#define be32toh(v) (v)
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#define htole16(v) __builtin_bswap16(v)
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#define htole32(v) __builtin_bswap32(v)
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#define htole64(v) __builtin_bswap64(v)
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#define le16toh(v) __builtin_bswap16(v)
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#define le32toh(v) __builtin_bswap32(v)
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#define le64toh(v) __builtin_bswap64(v)
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#if defined(WEBRTC_WIN)
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#define htobe64(v) (v)
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#define be64toh(v) (v)
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#endif // defined(WEBRTC_WIN)
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#if defined(__native_client__)
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#define htobe64(v) (v)
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#define be64toh(v) (v)
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#endif // defined(__native_client__)
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#else
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#error WEBRTC_ARCH_BIG_ENDIAN or WEBRTC_ARCH_LITTLE_ENDIAN must be defined.
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#endif // defined(WEBRTC_ARCH_LITTLE_ENDIAN)
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#elif defined(WEBRTC_POSIX)
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#include <endian.h>
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#else
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#error "Missing byte order functions for this arch."
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#endif // defined(WEBRTC_MAC)
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namespace rtc {
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// Reading and writing of little and big-endian numbers from memory
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inline void Set8(void* memory, size_t offset, uint8_t v) {
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static_cast<uint8_t*>(memory)[offset] = v;
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}
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inline uint8_t Get8(const void* memory, size_t offset) {
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return static_cast<const uint8_t*>(memory)[offset];
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}
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inline void SetBE16(void* memory, uint16_t v) {
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uint16_t val = htobe16(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline void SetBE32(void* memory, uint32_t v) {
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uint32_t val = htobe32(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline void SetBE64(void* memory, uint64_t v) {
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uint64_t val = htobe64(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline uint16_t GetBE16(const void* memory) {
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uint16_t val;
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memcpy(&val, memory, sizeof(val));
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return be16toh(val);
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}
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inline uint32_t GetBE32(const void* memory) {
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uint32_t val;
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memcpy(&val, memory, sizeof(val));
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return be32toh(val);
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}
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inline uint64_t GetBE64(const void* memory) {
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uint64_t val;
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memcpy(&val, memory, sizeof(val));
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return be64toh(val);
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}
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inline void SetLE16(void* memory, uint16_t v) {
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uint16_t val = htole16(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline void SetLE32(void* memory, uint32_t v) {
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uint32_t val = htole32(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline void SetLE64(void* memory, uint64_t v) {
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uint64_t val = htole64(v);
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memcpy(memory, &val, sizeof(val));
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}
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inline uint16_t GetLE16(const void* memory) {
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uint16_t val;
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memcpy(&val, memory, sizeof(val));
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return le16toh(val);
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}
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inline uint32_t GetLE32(const void* memory) {
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uint32_t val;
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memcpy(&val, memory, sizeof(val));
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return le32toh(val);
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}
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inline uint64_t GetLE64(const void* memory) {
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uint64_t val;
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memcpy(&val, memory, sizeof(val));
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return le64toh(val);
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}
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// Check if the current host is big endian.
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inline bool IsHostBigEndian() {
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#if defined(WEBRTC_ARCH_BIG_ENDIAN)
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return true;
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#else
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return false;
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#endif
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}
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inline uint16_t HostToNetwork16(uint16_t n) {
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return htobe16(n);
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}
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inline uint32_t HostToNetwork32(uint32_t n) {
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return htobe32(n);
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}
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inline uint64_t HostToNetwork64(uint64_t n) {
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return htobe64(n);
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}
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inline uint16_t NetworkToHost16(uint16_t n) {
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return be16toh(n);
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}
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inline uint32_t NetworkToHost32(uint32_t n) {
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return be32toh(n);
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}
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inline uint64_t NetworkToHost64(uint64_t n) {
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return be64toh(n);
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}
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} // namespace rtc
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#endif // RTC_BASE_BYTE_ORDER_H_
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