/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/Assertions.h" #include "mozilla/EndianUtils.h" #include <stddef.h> using mozilla::BigEndian; using mozilla::LittleEndian; using mozilla::NativeEndian; template<typename T> void TestSingleSwap(T aValue, T aSwappedValue) { #if MOZ_LITTLE_ENDIAN MOZ_RELEASE_ASSERT(NativeEndian::swapToBigEndian(aValue) == aSwappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromBigEndian(aValue) == aSwappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapToNetworkOrder(aValue) == aSwappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromNetworkOrder(aValue) == aSwappedValue); #else MOZ_RELEASE_ASSERT(NativeEndian::swapToLittleEndian(aValue) == aSwappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromLittleEndian(aValue) == aSwappedValue); #endif } template<typename T> void TestSingleNoSwap(T aValue, T aUnswappedValue) { #if MOZ_LITTLE_ENDIAN MOZ_RELEASE_ASSERT(NativeEndian::swapToLittleEndian(aValue) == aUnswappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromLittleEndian(aValue) == aUnswappedValue); #else MOZ_RELEASE_ASSERT(NativeEndian::swapToBigEndian(aValue) == aUnswappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromBigEndian(aValue) == aUnswappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapToNetworkOrder(aValue) == aUnswappedValue); MOZ_RELEASE_ASSERT(NativeEndian::swapFromNetworkOrder(aValue) == aUnswappedValue); #endif } // EndianUtils.h functions are declared as protected in a base class and // then re-exported as public in public derived classes. The // standardese around explicit instantiation of templates is not clear // in such cases. Provide these wrappers to make things more explicit. // For your own enlightenment, you may wish to peruse: // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56152 and subsequently // http://j.mp/XosS6S . #define WRAP_COPYTO(NAME) \ template<typename T> \ void \ NAME(void* aDst, const T* aSrc, size_t aCount) \ { \ NativeEndian::NAME<T>(aDst, aSrc, aCount); \ } WRAP_COPYTO(copyAndSwapToLittleEndian) WRAP_COPYTO(copyAndSwapToBigEndian) WRAP_COPYTO(copyAndSwapToNetworkOrder) #define WRAP_COPYFROM(NAME) \ template<typename T> \ void \ NAME(T* aDst, const void* aSrc, size_t aCount) \ { \ NativeEndian::NAME<T>(aDst, aSrc, aCount); \ } WRAP_COPYFROM(copyAndSwapFromLittleEndian) WRAP_COPYFROM(copyAndSwapFromBigEndian) WRAP_COPYFROM(copyAndSwapFromNetworkOrder) #define WRAP_IN_PLACE(NAME) \ template<typename T> \ void \ NAME(T* aP, size_t aCount) \ { \ NativeEndian::NAME<T>(aP, aCount); \ } WRAP_IN_PLACE(swapToLittleEndianInPlace) WRAP_IN_PLACE(swapFromLittleEndianInPlace) WRAP_IN_PLACE(swapToBigEndianInPlace) WRAP_IN_PLACE(swapFromBigEndianInPlace) WRAP_IN_PLACE(swapToNetworkOrderInPlace) WRAP_IN_PLACE(swapFromNetworkOrderInPlace) enum SwapExpectation { Swap, NoSwap }; template<typename T, size_t Count> void TestBulkSwapToSub(enum SwapExpectation aExpectSwap, const T (&aValues)[Count], void (*aSwapperFunc)(void*, const T*, size_t), T (*aReaderFunc)(const void*)) { const size_t arraySize = 2 * Count; const size_t bufferSize = arraySize * sizeof(T); static uint8_t buffer[bufferSize]; const uint8_t fillValue = 0xa5; static uint8_t checkBuffer[bufferSize]; MOZ_RELEASE_ASSERT(bufferSize > 2 * sizeof(T)); memset(checkBuffer, fillValue, bufferSize); for (size_t startPosition = 0; startPosition < sizeof(T); ++startPosition) { for (size_t nValues = 0; nValues < Count; ++nValues) { memset(buffer, fillValue, bufferSize); aSwapperFunc(buffer + startPosition, aValues, nValues); MOZ_RELEASE_ASSERT(memcmp(buffer, checkBuffer, startPosition) == 0); size_t valuesEndPosition = startPosition + sizeof(T) * nValues; MOZ_RELEASE_ASSERT(memcmp(buffer + valuesEndPosition, checkBuffer + valuesEndPosition, bufferSize - valuesEndPosition) == 0); if (aExpectSwap == NoSwap) { MOZ_RELEASE_ASSERT(memcmp(buffer + startPosition, aValues, nValues * sizeof(T)) == 0); } for (size_t i = 0; i < nValues; ++i) { MOZ_RELEASE_ASSERT( aReaderFunc(buffer + startPosition + sizeof(T) * i) == aValues[i]); } } } } template<typename T, size_t Count> void TestBulkSwapFromSub(enum SwapExpectation aExpectSwap, const T (&aValues)[Count], void (*aSwapperFunc)(T*, const void*, size_t), T (*aReaderFunc)(const void*)) { const size_t arraySize = 2 * Count; const size_t bufferSize = arraySize * sizeof(T); static T buffer[arraySize]; const uint8_t fillValue = 0xa5; static T checkBuffer[arraySize]; memset(checkBuffer, fillValue, bufferSize); for (size_t startPosition = 0; startPosition < Count; ++startPosition) { for (size_t nValues = 0; nValues < (Count - startPosition); ++nValues) { memset(buffer, fillValue, bufferSize); aSwapperFunc(buffer + startPosition, aValues, nValues); MOZ_RELEASE_ASSERT( memcmp(buffer, checkBuffer, startPosition * sizeof(T)) == 0); size_t valuesEndPosition = startPosition + nValues; MOZ_RELEASE_ASSERT(memcmp(buffer + valuesEndPosition, checkBuffer + valuesEndPosition, (arraySize - valuesEndPosition) * sizeof(T)) == 0); if (aExpectSwap == NoSwap) { MOZ_RELEASE_ASSERT(memcmp(buffer + startPosition, aValues, nValues * sizeof(T)) == 0); } for (size_t i = 0; i < nValues; ++i) { MOZ_RELEASE_ASSERT(aReaderFunc(buffer + startPosition + i) == aValues[i]); } } } } template<typename T, size_t Count> void TestBulkInPlaceSub(enum SwapExpectation aExpectSwap, const T (&aValues)[Count], void (*aSwapperFunc)(T*, size_t), T (*aReaderFunc)(const void*)) { const size_t bufferCount = 4 * Count; const size_t bufferSize = bufferCount * sizeof(T); static T buffer[bufferCount]; const T fillValue = 0xa5; static T checkBuffer[bufferCount]; MOZ_RELEASE_ASSERT(bufferSize > 2 * sizeof(T)); memset(checkBuffer, fillValue, bufferSize); for (size_t startPosition = 0; startPosition < Count; ++startPosition) { for (size_t nValues = 0; nValues < Count; ++nValues) { memset(buffer, fillValue, bufferSize); memcpy(buffer + startPosition, aValues, nValues * sizeof(T)); aSwapperFunc(buffer + startPosition, nValues); MOZ_RELEASE_ASSERT( memcmp(buffer, checkBuffer, startPosition * sizeof(T)) == 0); size_t valuesEndPosition = startPosition + nValues; MOZ_RELEASE_ASSERT(memcmp(buffer + valuesEndPosition, checkBuffer + valuesEndPosition, bufferSize - valuesEndPosition * sizeof(T)) == 0); if (aExpectSwap == NoSwap) { MOZ_RELEASE_ASSERT(memcmp(buffer + startPosition, aValues, nValues * sizeof(T)) == 0); } for (size_t i = 0; i < nValues; ++i) { MOZ_RELEASE_ASSERT(aReaderFunc(buffer + startPosition + i) == aValues[i]); } } } } template<typename T> struct Reader { }; #define SPECIALIZE_READER(TYPE, READ_FUNC) \ template<> \ struct Reader<TYPE> \ { \ static TYPE readLE(const void* aP) { return LittleEndian::READ_FUNC(aP); }\ static TYPE readBE(const void* aP) { return BigEndian::READ_FUNC(aP); } \ }; SPECIALIZE_READER(uint16_t, readUint16) SPECIALIZE_READER(uint32_t, readUint32) SPECIALIZE_READER(uint64_t, readUint64) SPECIALIZE_READER(int16_t, readInt16) SPECIALIZE_READER(int32_t, readInt32) SPECIALIZE_READER(int64_t, readInt64) template<typename T, size_t Count> void TestBulkSwap(const T (&aBytes)[Count]) { #if MOZ_LITTLE_ENDIAN TestBulkSwapToSub(Swap, aBytes, copyAndSwapToBigEndian<T>, Reader<T>::readBE); TestBulkSwapFromSub(Swap, aBytes, copyAndSwapFromBigEndian<T>, Reader<T>::readBE); TestBulkSwapToSub(Swap, aBytes, copyAndSwapToNetworkOrder<T>, Reader<T>::readBE); TestBulkSwapFromSub(Swap, aBytes, copyAndSwapFromNetworkOrder<T>, Reader<T>::readBE); #else TestBulkSwapToSub(Swap, aBytes, copyAndSwapToLittleEndian<T>, Reader<T>::readLE); TestBulkSwapFromSub(Swap, aBytes, copyAndSwapFromLittleEndian<T>, Reader<T>::readLE); #endif } template<typename T, size_t Count> void TestBulkNoSwap(const T (&aBytes)[Count]) { #if MOZ_LITTLE_ENDIAN TestBulkSwapToSub(NoSwap, aBytes, copyAndSwapToLittleEndian<T>, Reader<T>::readLE); TestBulkSwapFromSub(NoSwap, aBytes, copyAndSwapFromLittleEndian<T>, Reader<T>::readLE); #else TestBulkSwapToSub(NoSwap, aBytes, copyAndSwapToBigEndian<T>, Reader<T>::readBE); TestBulkSwapFromSub(NoSwap, aBytes, copyAndSwapFromBigEndian<T>, Reader<T>::readBE); TestBulkSwapToSub(NoSwap, aBytes, copyAndSwapToNetworkOrder<T>, Reader<T>::readBE); TestBulkSwapFromSub(NoSwap, aBytes, copyAndSwapFromNetworkOrder<T>, Reader<T>::readBE); #endif } template<typename T, size_t Count> void TestBulkInPlaceSwap(const T (&aBytes)[Count]) { #if MOZ_LITTLE_ENDIAN TestBulkInPlaceSub(Swap, aBytes, swapToBigEndianInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(Swap, aBytes, swapFromBigEndianInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(Swap, aBytes, swapToNetworkOrderInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(Swap, aBytes, swapFromNetworkOrderInPlace<T>, Reader<T>::readBE); #else TestBulkInPlaceSub(Swap, aBytes, swapToLittleEndianInPlace<T>, Reader<T>::readLE); TestBulkInPlaceSub(Swap, aBytes, swapFromLittleEndianInPlace<T>, Reader<T>::readLE); #endif } template<typename T, size_t Count> void TestBulkInPlaceNoSwap(const T (&aBytes)[Count]) { #if MOZ_LITTLE_ENDIAN TestBulkInPlaceSub(NoSwap, aBytes, swapToLittleEndianInPlace<T>, Reader<T>::readLE); TestBulkInPlaceSub(NoSwap, aBytes, swapFromLittleEndianInPlace<T>, Reader<T>::readLE); #else TestBulkInPlaceSub(NoSwap, aBytes, swapToBigEndianInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(NoSwap, aBytes, swapFromBigEndianInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(NoSwap, aBytes, swapToNetworkOrderInPlace<T>, Reader<T>::readBE); TestBulkInPlaceSub(NoSwap, aBytes, swapFromNetworkOrderInPlace<T>, Reader<T>::readBE); #endif } int main() { static const uint8_t unsigned_bytes[16] = { 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8 }; static const int8_t signed_bytes[16] = { -0x0f, -0x0e, -0x0d, -0x0c, -0x0b, -0x0a, -0x09, -0x08, -0x0f, -0x0e, -0x0d, -0x0c, -0x0b, -0x0a, -0x09, -0x08 }; static const uint16_t uint16_values[8] = { 0x102, 0x304, 0x506, 0x708, 0x102, 0x304, 0x506, 0x708 }; static const int16_t int16_values[8] = { int16_t(0xf1f2), int16_t(0xf3f4), int16_t(0xf5f6), int16_t(0xf7f8), int16_t(0xf1f2), int16_t(0xf3f4), int16_t(0xf5f6), int16_t(0xf7f8) }; static const uint32_t uint32_values[4] = { 0x1020304, 0x5060708, 0x1020304, 0x5060708 }; static const int32_t int32_values[4] = { int32_t(0xf1f2f3f4), int32_t(0xf5f6f7f8), int32_t(0xf1f2f3f4), int32_t(0xf5f6f7f8) }; static const uint64_t uint64_values[2] = { 0x102030405060708, 0x102030405060708 }; static const int64_t int64_values[2] = { int64_t(0xf1f2f3f4f5f6f7f8), int64_t(0xf1f2f3f4f5f6f7f8) }; uint8_t buffer[8]; MOZ_RELEASE_ASSERT(LittleEndian::readUint16(&unsigned_bytes[0]) == 0x201); MOZ_RELEASE_ASSERT(BigEndian::readUint16(&unsigned_bytes[0]) == 0x102); MOZ_RELEASE_ASSERT( LittleEndian::readUint32(&unsigned_bytes[0]) == 0x4030201U); MOZ_RELEASE_ASSERT( BigEndian::readUint32(&unsigned_bytes[0]) == 0x1020304U); MOZ_RELEASE_ASSERT( LittleEndian::readUint64(&unsigned_bytes[0]) == 0x807060504030201ULL); MOZ_RELEASE_ASSERT( BigEndian::readUint64(&unsigned_bytes[0]) == 0x102030405060708ULL); LittleEndian::writeUint16(&buffer[0], 0x201); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint16_t)) == 0); BigEndian::writeUint16(&buffer[0], 0x102); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint16_t)) == 0); LittleEndian::writeUint32(&buffer[0], 0x4030201U); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint32_t)) == 0); BigEndian::writeUint32(&buffer[0], 0x1020304U); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint32_t)) == 0); LittleEndian::writeUint64(&buffer[0], 0x807060504030201ULL); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint64_t)) == 0); BigEndian::writeUint64(&buffer[0], 0x102030405060708ULL); MOZ_RELEASE_ASSERT( memcmp(&unsigned_bytes[0], &buffer[0], sizeof(uint64_t)) == 0); MOZ_RELEASE_ASSERT( LittleEndian::readInt16(&signed_bytes[0]) == int16_t(0xf2f1)); MOZ_RELEASE_ASSERT( BigEndian::readInt16(&signed_bytes[0]) == int16_t(0xf1f2)); MOZ_RELEASE_ASSERT( LittleEndian::readInt32(&signed_bytes[0]) == int32_t(0xf4f3f2f1)); MOZ_RELEASE_ASSERT( BigEndian::readInt32(&signed_bytes[0]) == int32_t(0xf1f2f3f4)); MOZ_RELEASE_ASSERT( LittleEndian::readInt64(&signed_bytes[0]) == int64_t(0xf8f7f6f5f4f3f2f1LL)); MOZ_RELEASE_ASSERT( BigEndian::readInt64(&signed_bytes[0]) == int64_t(0xf1f2f3f4f5f6f7f8LL)); LittleEndian::writeInt16(&buffer[0], int16_t(0xf2f1)); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int16_t)) == 0); BigEndian::writeInt16(&buffer[0], int16_t(0xf1f2)); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int16_t)) == 0); LittleEndian::writeInt32(&buffer[0], 0xf4f3f2f1); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int32_t)) == 0); BigEndian::writeInt32(&buffer[0], 0xf1f2f3f4); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int32_t)) == 0); LittleEndian::writeInt64(&buffer[0], 0xf8f7f6f5f4f3f2f1LL); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int64_t)) == 0); BigEndian::writeInt64(&buffer[0], 0xf1f2f3f4f5f6f7f8LL); MOZ_RELEASE_ASSERT( memcmp(&signed_bytes[0], &buffer[0], sizeof(int64_t)) == 0); TestSingleSwap(uint16_t(0xf2f1), uint16_t(0xf1f2)); TestSingleSwap(uint32_t(0xf4f3f2f1), uint32_t(0xf1f2f3f4)); TestSingleSwap(uint64_t(0xf8f7f6f5f4f3f2f1), uint64_t(0xf1f2f3f4f5f6f7f8)); TestSingleSwap(int16_t(0xf2f1), int16_t(0xf1f2)); TestSingleSwap(int32_t(0xf4f3f2f1), int32_t(0xf1f2f3f4)); TestSingleSwap(int64_t(0xf8f7f6f5f4f3f2f1), int64_t(0xf1f2f3f4f5f6f7f8)); TestSingleNoSwap(uint16_t(0xf2f1), uint16_t(0xf2f1)); TestSingleNoSwap(uint32_t(0xf4f3f2f1), uint32_t(0xf4f3f2f1)); TestSingleNoSwap(uint64_t(0xf8f7f6f5f4f3f2f1), uint64_t(0xf8f7f6f5f4f3f2f1)); TestSingleNoSwap(int16_t(0xf2f1), int16_t(0xf2f1)); TestSingleNoSwap(int32_t(0xf4f3f2f1), int32_t(0xf4f3f2f1)); TestSingleNoSwap(int64_t(0xf8f7f6f5f4f3f2f1), int64_t(0xf8f7f6f5f4f3f2f1)); TestBulkSwap(uint16_values); TestBulkSwap(int16_values); TestBulkSwap(uint32_values); TestBulkSwap(int32_values); TestBulkSwap(uint64_values); TestBulkSwap(int64_values); TestBulkNoSwap(uint16_values); TestBulkNoSwap(int16_values); TestBulkNoSwap(uint32_values); TestBulkNoSwap(int32_values); TestBulkNoSwap(uint64_values); TestBulkNoSwap(int64_values); TestBulkInPlaceSwap(uint16_values); TestBulkInPlaceSwap(int16_values); TestBulkInPlaceSwap(uint32_values); TestBulkInPlaceSwap(int32_values); TestBulkInPlaceSwap(uint64_values); TestBulkInPlaceSwap(int64_values); TestBulkInPlaceNoSwap(uint16_values); TestBulkInPlaceNoSwap(int16_values); TestBulkInPlaceNoSwap(uint32_values); TestBulkInPlaceNoSwap(int32_values); TestBulkInPlaceNoSwap(uint64_values); TestBulkInPlaceNoSwap(int64_values); return 0; }