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Provides a C 23-like std::byteswap implementation.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 1,56 @@ | ||
| /* PCSX2 - PS2 Emulator for PCs | ||
| * Copyright (C) 2023 PCSX2 Dev Team | ||
| * | ||
| * PCSX2 is free software: you can redistribute it and/or modify it under the terms | ||
| * of the GNU Lesser General Public License as published by the Free Software Found- | ||
| * ation, either version 3 of the License, or (at your option) any later version. | ||
| * | ||
| * PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; | ||
| * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | ||
| * PURPOSE. See the GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along with PCSX2. | ||
| * If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
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||
| #pragma once | ||
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||
| #include <cstdint> | ||
| #include <type_traits> | ||
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| #ifdef _MSC_VER | ||
| #include <stdlib.h> | ||
| #endif | ||
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| template <typename T> | ||
| T ByteSwap(T value) | ||
| { | ||
| if constexpr (std::is_signed_v<T>) | ||
| { | ||
| return static_cast<T>(ByteSwap(std::make_unsigned_t<T>(value))); | ||
| } | ||
| else if constexpr (std::is_same_v<T, std::uint16_t>) | ||
| { | ||
| #ifdef _MSC_VER | ||
| return _byteswap_ushort(value); | ||
| #else | ||
| return __builtin_bswap16(value); | ||
| #endif | ||
| } | ||
| else if constexpr (std::is_same_v<T, std::uint32_t>) | ||
| { | ||
| #ifdef _MSC_VER | ||
| return _byteswap_ulong(value); | ||
| #else | ||
| return __builtin_bswap32(value); | ||
| #endif | ||
| } | ||
| else if constexpr (std::is_same_v<T, std::uint64_t>) | ||
| { | ||
| #ifdef _MSC_VER | ||
| return _byteswap_uint64(value); | ||
| #else | ||
| return __builtin_bswap64(value); | ||
| #endif | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 1,5 @@ | ||
| add_pcsx2_test(common_test | ||
| byteswap_tests.cpp | ||
| path_tests.cpp | ||
| string_util_tests.cpp | ||
| x86emitter/codegen_tests.cpp | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 1,26 @@ | ||
| /* PCSX2 - PS2 Emulator for PCs | ||
| * Copyright (C) 2023 PCSX2 Dev Team | ||
| * | ||
| * PCSX2 is free software: you can redistribute it and/or modify it under the terms | ||
| * of the GNU Lesser General Public License as published by the Free Software Found- | ||
| * ation, either version 3 of the License, or (at your option) any later version. | ||
| * | ||
| * PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; | ||
| * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | ||
| * PURPOSE. See the GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License along with PCSX2. | ||
| * If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include "common/Pcsx2Defs.h" | ||
| #include "common/ByteSwap.h" | ||
| #include <gtest/gtest.h> | ||
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| TEST(ByteSwap, ByteSwap) | ||
| { | ||
| ASSERT_EQ(ByteSwap(static_cast<u16>(0xabcd)), 0xcdabu); | ||
| ASSERT_EQ(ByteSwap(static_cast<u32>(0xabcdef01)), 0x01efcdabu); | ||
| ASSERT_EQ(ByteSwap(static_cast<u64>(0xabcdef0123456789ULL)), 0x8967452301efcdabu); | ||
| ASSERT_EQ(ByteSwap(static_cast<s32>(0x80123456)), 0x56341280); | ||
| } |