Files
threeSD/src/common/common_funcs.h
T

93 lines
2.9 KiB
C++

// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstring>
#include <string>
#include <type_traits>
#if !defined(ARCHITECTURE_x86_64)
#include <cstdlib> // for exit
#endif
#include "common/common_types.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
/// 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
#define TRY(x, ...) \
if (!(x)) { \
__VA_ARGS__; \
return false; \
}
// helper macro to properly align structure members.
// Calling INSERT_PADDING_BYTES will add a new member variable with a name like "pad121",
// depending on the current source line to make sure variable names are unique.
#define INSERT_PADDING_BYTES(num_bytes) u8 CONCAT2(pad, __LINE__)[(num_bytes)]
#define INSERT_PADDING_WORDS(num_words) u32 CONCAT2(pad, __LINE__)[(num_words)]
// Inlining
#ifdef _WIN32
#define FORCE_INLINE __forceinline
#else
#define FORCE_INLINE inline __attribute__((always_inline))
#endif
#ifndef _MSC_VER
#ifdef ARCHITECTURE_x86_64
#define Crash() __asm__ __volatile__("int $3")
#else
#define Crash() exit(1)
#endif
#else // _MSC_VER
#if (_MSC_VER < 1900)
// Function Cross-Compatibility
#define snprintf _snprintf
#endif
// 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();
template <typename T>
bool CheckedMemcpy(void* dest, T& container, std::ptrdiff_t offset, std::size_t size) {
static_assert(std::is_same_v<typename T::value_type, u8>, "Only works with u8");
if (container.size() < offset + size) {
return false;
}
std::memcpy(dest, container.data() + offset, size);
return true;
}
constexpr u32 MakeMagic(char a, char b, char c, char d) {
return a | b << 8 | c << 16 | d << 24;
}
constexpr u64 MakeMagic(char a, char b, char c, char d, char e, char f, char g, char h) {
return u64(a) | u64(b) << 8 | u64(c) << 16 | u64(d) << 24 | u64(e) << 32 | u64(f) << 40 |
u64(g) << 48 | u64(h) << 56;
}
#define TRY_MEMCPY(dest, container, offset, size) \
TRY(CheckedMemcpy(dest, container, offset, size), LOG_ERROR(Core, "File size is too small"))