citra/src/common/common_funcs.h

// Copyright 2019 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#pragma once

#include <algorithm>
#include <array>
#include <string>

#if !defined(ARCHITECTURE_x86_64)
#include <cstdlib> // for exit
#endif
#include "common/common_types.h"

/// Textually concatenates two tokens. The double-expansion is required by the C preprocessor.
#define CONCAT2(x, y) DO_CONCAT2(x, y)
#define DO_CONCAT2(x, y) x##y

/// Helper macros to insert unused bytes or words to properly align structs. These values will be
/// zero-initialized.
#define INSERT_PADDING_BYTES(num_bytes) std::array<u8, num_bytes> CONCAT2(pad, __LINE__){};
#define INSERT_PADDING_WORDS(num_words) std::array<u32, num_words> CONCAT2(pad, __LINE__){};

/// These are similar to the INSERT_PADDING_* macros, but are needed for padding unions. This is
/// because unions can only be initialized by one member.
#define INSERT_UNION_PADDING_BYTES(num_bytes) std::array<u8, num_bytes> CONCAT2(pad, __LINE__);
#define INSERT_UNION_PADDING_WORDS(num_words) std::array<u32, num_words> CONCAT2(pad, __LINE__);

#ifndef _MSC_VER

#ifdef ARCHITECTURE_x86_64
#define Crash() __asm__ __volatile__("int $3")
#else
#define Crash() exit(1)
#endif

#else // _MSC_VER

// Locale Cross-Compatibility
#define locale_t _locale_t

extern "C" {
__declspec(dllimport) void __stdcall DebugBreak(void);
}
#define Crash() DebugBreak()

#endif // _MSC_VER ndef

// Generic function to get last error message.
// Call directly after the command or use the error num.
// This function might change the error code.
// Defined in Misc.cpp.
std::string GetLastErrorMsg();

namespace Common {

constexpr u32 MakeMagic(char a, char b, char c, char d) {
    return u32(a) | u32(b) << 8 | u32(c) << 16 | u32(d) << 24;
}

} // namespace Common