forked from ish-app/ish
-
Notifications
You must be signed in to change notification settings - Fork 0
/
misc.h
132 lines (111 loc) · 3.08 KB
/
misc.h
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
#ifndef MISC_H
#define MISC_H
#ifndef __KERNEL__
#include <assert.h>
#include <sys/types.h>
#include <stdnoreturn.h>
#include <stdbool.h>
#endif
#include <stdint.h>
// utility macros
#define glue(a, b) _glue(a, b)
#define _glue(a, b) a##b
#define glue3(a,b,c) glue(a, glue(b, c))
#define glue4(a,b,c,d) glue(a, glue3(b, c, d))
#define str(x) _str(x)
#define _str(x) #x
// compiler check
#define is_gcc(version) (__GNUC__ >= version)
#if !defined(__has_attribute)
#define has_attribute(x) 0
#else
#define has_attribute __has_attribute
#endif
#if !defined(__has_feature)
#define has_feature(x) 0
#else
#define has_feature __has_feature
#endif
// keywords
#define bitfield unsigned int
#define forceinline inline __attribute__((always_inline))
#define flatten __attribute__((flatten))
#if defined(NDEBUG) || defined(__KERNEL__)
#define posit __builtin_assume
#else
#define posit assert
#endif
#define must_check __attribute__((warn_unused_result))
#ifndef __KERNEL__
#define unlikely(x) __builtin_expect((x), 0)
#define typecheck(type, x) ({type _x = x; x;})
#define container_of(ptr, type, member) \
((type *) ((char *) (ptr) - offsetof(type, member)))
#if has_attribute(fallthrough)
#define fallthrough __attribute__((fallthrough))
#else
#define fallthrough
#endif
#endif
#if has_attribute(no_sanitize)
#define __no_instrument_msan
#if defined(__has_feature)
#if has_feature(memory_sanitizer)
#undef __no_instrument_msan
#define __no_instrument_msan __attribute__((no_sanitize("memory"))
#endif
#endif
#define __no_instrument __attribute__((no_sanitize("address", "thread", "undefined", "leak"))) __no_instrument_msan
#else
#define __no_instrument
#endif
#if has_attribute(nonstring)
#define __strncpy_safe __attribute__((nonstring))
#else
#define __strncpy_safe
#endif
#define zero_init(type) ((type[1]){}[0])
#define pun(type, x) (((union {typeof(x) _; type a;}) (x)).a)
#define UNUSED(x) UNUSED_##x __attribute__((unused))
static inline void __use(int dummy __attribute__((unused)), ...) {}
#define use(...) __use(0, ##__VA_ARGS__)
#if defined(__x86_64__)
#define rdtsc() ({ \
uint32_t low, high; \
__asm__ volatile("rdtsc" : "=a" (high), "=d" (low)); \
((uint64_t) high) << 32 | low; \
})
#elif defined(__arm64__) || defined(__aarch64__)
#define rdtsc() ({ \
uint64_t tsc; \
__asm__ volatile("mrs %0, PMCCNTR_EL0" : "=r" (tsc)); \
tsc; \
})
#endif
#ifndef __KERNEL__
#define array_size(arr) (sizeof(arr)/sizeof((arr)[0]))
#endif
// types
typedef int64_t sqword_t;
typedef uint64_t qword_t;
typedef uint32_t dword_t;
typedef int32_t sdword_t;
typedef uint16_t word_t;
typedef uint8_t byte_t;
typedef dword_t addr_t;
typedef dword_t uint_t;
typedef sdword_t int_t;
typedef sdword_t pid_t_;
typedef dword_t uid_t_;
typedef word_t mode_t_;
typedef sqword_t off_t_;
typedef dword_t time_t_;
typedef dword_t clock_t_;
#define uint(size) glue3(uint,size,_t)
#define sint(size) glue3(int,size,_t)
#ifndef __KERNEL__
#define ERR_PTR(err) (void *) (intptr_t) (err)
#define PTR_ERR(ptr) (intptr_t) (ptr)
#define IS_ERR(ptr) ((uintptr_t) (ptr) > (uintptr_t) -0xfff)
#endif
#endif