1 //===-- internal_defs.h -----------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #ifndef SCUDO_INTERNAL_DEFS_H_
10 #define SCUDO_INTERNAL_DEFS_H_
20 #define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
22 // String related macros.
24 #define STRINGIFY_(S) #S
25 #define STRINGIFY(S) STRINGIFY_(S)
26 #define CONCATENATE_(S, C) S##C
27 #define CONCATENATE(S, C) CONCATENATE_(S, C)
29 // Attributes & builtins related macros.
31 #define INTERFACE __attribute__((visibility("default")))
32 #define WEAK __attribute__((weak))
34 #define ALWAYS_INLINE inline __attribute__((always_inline))
35 #define ALIAS(X) __attribute__((alias(X)))
36 // Please only use the ALIGNED macro before the type. Using ALIGNED after the
37 // variable declaration is not portable.
38 #define ALIGNED(X) __attribute__((aligned(X)))
39 #define FORMAT(F, A) __attribute__((format(printf, F, A)))
40 #define NOINLINE __attribute__((noinline))
41 #define NORETURN __attribute__((noreturn))
42 #define THREADLOCAL __thread
43 #define LIKELY(X) __builtin_expect(!!(X), 1)
44 #define UNLIKELY(X) __builtin_expect(!!(X), 0)
45 #if defined(__i386__) || defined(__x86_64__)
46 // __builtin_prefetch(X) generates prefetchnt0 on x86
47 #define PREFETCH(X) __asm__("prefetchnta (%0)" : : "r"(X))
49 #define PREFETCH(X) __builtin_prefetch(X)
51 #define UNUSED __attribute__((unused))
52 #define USED __attribute__((used))
53 #define NOEXCEPT noexcept
57 typedef unsigned long uptr;
58 typedef signed long sptr;
59 typedef unsigned char u8;
60 typedef unsigned short u16;
61 typedef unsigned int u32;
62 typedef unsigned long long u64;
63 typedef signed char s8;
64 typedef signed short s16;
65 typedef signed int s32;
66 typedef signed long long s64;
68 // The following two functions have platform specific implementations.
69 void outputRaw(const char *Buffer);
72 #define RAW_CHECK_MSG(Expr, Msg) \
74 if (UNLIKELY(!(Expr))) { \
80 #define RAW_CHECK(Expr) RAW_CHECK_MSG(Expr, #Expr)
82 void NORETURN reportCheckFailed(const char *File, int Line,
83 const char *Condition, u64 Value1, u64 Value2);
85 #define CHECK_IMPL(C1, Op, C2) \
89 if (UNLIKELY(!(V1 Op V2))) { \
90 reportCheckFailed(__FILE__, __LINE__, "(" #C1 ") " #Op " (" #C2 ")", V1, \
96 #define CHECK(A) CHECK_IMPL((A), !=, 0)
97 #define CHECK_EQ(A, B) CHECK_IMPL((A), ==, (B))
98 #define CHECK_NE(A, B) CHECK_IMPL((A), !=, (B))
99 #define CHECK_LT(A, B) CHECK_IMPL((A), <, (B))
100 #define CHECK_LE(A, B) CHECK_IMPL((A), <=, (B))
101 #define CHECK_GT(A, B) CHECK_IMPL((A), >, (B))
102 #define CHECK_GE(A, B) CHECK_IMPL((A), >=, (B))
105 #define DCHECK(A) CHECK(A)
106 #define DCHECK_EQ(A, B) CHECK_EQ(A, B)
107 #define DCHECK_NE(A, B) CHECK_NE(A, B)
108 #define DCHECK_LT(A, B) CHECK_LT(A, B)
109 #define DCHECK_LE(A, B) CHECK_LE(A, B)
110 #define DCHECK_GT(A, B) CHECK_GT(A, B)
111 #define DCHECK_GE(A, B) CHECK_GE(A, B)
114 #define DCHECK_EQ(A, B)
115 #define DCHECK_NE(A, B)
116 #define DCHECK_LT(A, B)
117 #define DCHECK_LE(A, B)
118 #define DCHECK_GT(A, B)
119 #define DCHECK_GE(A, B)
122 // The superfluous die() call effectively makes this macro NORETURN.
123 #define UNREACHABLE(Msg) \
129 #define COMPILER_CHECK(Pred) static_assert(Pred, "")
131 enum LinkerInitialized { LINKER_INITIALIZED = 0 };
135 #endif // SCUDO_INTERNAL_DEFS_H_