summaryrefslogtreecommitdiffstats
path: root/src/common/common_funcs.h
blob: cd3207a037a5e390f41617eed1e17572d5d52896 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
// 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 do not zero-initialize the contents.
/// This keeps the structure trivial to construct.
#define INSERT_PADDING_BYTES_NOINIT(num_bytes) std::array<u8, num_bytes> CONCAT2(pad, __LINE__)
#define INSERT_PADDING_WORDS_NOINIT(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.
[[nodiscard]] std::string GetLastErrorMsg();

#define DECLARE_ENUM_FLAG_OPERATORS(type)                                                          \
    [[nodiscard]] constexpr type operator|(type a, type b) noexcept {                              \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<type>(static_cast<T>(a) | static_cast<T>(b));                           \
    }                                                                                              \
    [[nodiscard]] constexpr type operator&(type a, type b) noexcept {                              \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<type>(static_cast<T>(a) & static_cast<T>(b));                           \
    }                                                                                              \
    [[nodiscard]] constexpr type operator^(type a, type b) noexcept {                              \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<type>(static_cast<T>(a) ^ static_cast<T>(b));                           \
    }                                                                                              \
    constexpr type& operator|=(type& a, type b) noexcept {                                         \
        a = a | b;                                                                                 \
        return a;                                                                                  \
    }                                                                                              \
    constexpr type& operator&=(type& a, type b) noexcept {                                         \
        a = a & b;                                                                                 \
        return a;                                                                                  \
    }                                                                                              \
    constexpr type& operator^=(type& a, type b) noexcept {                                         \
        a = a ^ b;                                                                                 \
        return a;                                                                                  \
    }                                                                                              \
    [[nodiscard]] constexpr type operator~(type key) noexcept {                                    \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<type>(~static_cast<T>(key));                                            \
    }                                                                                              \
    [[nodiscard]] constexpr bool True(type key) noexcept {                                         \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<T>(key) != 0;                                                           \
    }                                                                                              \
    [[nodiscard]] constexpr bool False(type key) noexcept {                                        \
        using T = std::underlying_type_t<type>;                                                    \
        return static_cast<T>(key) == 0;                                                           \
    }

/// Evaluates a boolean expression, and returns a result unless that expression is true.
#define R_UNLESS(expr, res)                                                                        \
    {                                                                                              \
        if (!(expr)) {                                                                             \
            if (res.IsError()) {                                                                   \
                LOG_ERROR(Kernel, "Failed with result: {}", res.raw);                              \
            }                                                                                      \
            return res;                                                                            \
        }                                                                                          \
    }

/// Evaluates a boolean expression, and returns a result unless that expression is true.
#define R_UNLESS_NOLOG(expr, res)                                                                  \
    {                                                                                              \
        if (!(expr)) {                                                                             \
            return res;                                                                            \
        }                                                                                          \
    }

#define R_SUCCEEDED(res) (res.IsSuccess())

/// Evaluates an expression that returns a result, and returns the result if it would fail.
#define R_TRY(res_expr)                                                                            \
    {                                                                                              \
        const auto _tmp_r_try_rc = (res_expr);                                                     \
        if (_tmp_r_try_rc.IsError()) {                                                             \
            return _tmp_r_try_rc;                                                                  \
        }                                                                                          \
    }

/// Evaluates a boolean expression, and succeeds if that expression is true.
#define R_SUCCEED_IF(expr) R_UNLESS(!(expr), RESULT_SUCCESS)

namespace Common {

[[nodiscard]] 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