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))
33 #define ALWAYS_INLINE inline __attribute__((always_inline))
34 #define ALIAS(X) __attribute__((alias(X)))
35 // Please only use the ALIGNED macro before the type. Using ALIGNED after the
36 // variable declaration is not portable.
37 #define ALIGNED(X) __attribute__((aligned(X)))
38 #define FORMAT(F, A) __attribute__((format(printf, F, A)))
39 #define NOINLINE __attribute__((noinline))
40 #define NORETURN __attribute__((noreturn))
41 #define THREADLOCAL __thread
42 #define LIKELY(X) __builtin_expect(!!(X), 1)
43 #define UNLIKELY(X) __builtin_expect(!!(X), 0)
44 #if defined(__i386__) || defined(__x86_64__)
45 // __builtin_prefetch(X) generates prefetchnt0 on x86
46 #define PREFETCH(X) __asm__("prefetchnta (%0)" : : "r"(X))
48 #define PREFETCH(X) __builtin_prefetch(X)
50 #define UNUSED __attribute__((unused))
51 #define USED __attribute__((used))
52 #define NOEXCEPT noexcept
56 typedef unsigned long uptr;
57 typedef unsigned char u8;
58 typedef unsigned short u16;
59 typedef unsigned int u32;
60 typedef unsigned long long u64;
61 typedef signed long sptr;
62 typedef signed char s8;
63 typedef signed short s16;
64 typedef signed int s32;
65 typedef signed long long s64;
67 // The following two functions have platform specific implementations.
68 void outputRaw(const char *Buffer);
71 #define RAW_CHECK_MSG(Expr, Msg) \
73 if (UNLIKELY(!(Expr))) { \
79 #define RAW_CHECK(Expr) RAW_CHECK_MSG(Expr, #Expr)
81 void NORETURN reportCheckFailed(const char *File, int Line,
82 const char *Condition, u64 Value1, u64 Value2);
84 #define CHECK_IMPL(C1, Op, C2) \
86 scudo::u64 V1 = (scudo::u64)(C1); \
87 scudo::u64 V2 = (scudo::u64)(C2); \
88 if (UNLIKELY(!(V1 Op V2))) { \
89 scudo::reportCheckFailed(__FILE__, __LINE__, \
90 "(" #C1 ") " #Op " (" #C2 ")", V1, V2); \
95 #define CHECK(A) CHECK_IMPL((A), !=, 0)
96 #define CHECK_EQ(A, B) CHECK_IMPL((A), ==, (B))
97 #define CHECK_NE(A, B) CHECK_IMPL((A), !=, (B))
98 #define CHECK_LT(A, B) CHECK_IMPL((A), <, (B))
99 #define CHECK_LE(A, B) CHECK_IMPL((A), <=, (B))
100 #define CHECK_GT(A, B) CHECK_IMPL((A), >, (B))
101 #define CHECK_GE(A, B) CHECK_IMPL((A), >=, (B))
104 #define DCHECK(A) CHECK(A)
105 #define DCHECK_EQ(A, B) CHECK_EQ(A, B)
106 #define DCHECK_NE(A, B) CHECK_NE(A, B)
107 #define DCHECK_LT(A, B) CHECK_LT(A, B)
108 #define DCHECK_LE(A, B) CHECK_LE(A, B)
109 #define DCHECK_GT(A, B) CHECK_GT(A, B)
110 #define DCHECK_GE(A, B) CHECK_GE(A, B)
113 #define DCHECK_EQ(A, B)
114 #define DCHECK_NE(A, B)
115 #define DCHECK_LT(A, B)
116 #define DCHECK_LE(A, B)
117 #define DCHECK_GT(A, B)
118 #define DCHECK_GE(A, B)
121 // The superfluous die() call effectively makes this macro NORETURN.
122 #define UNREACHABLE(Msg) \
130 #endif // SCUDO_INTERNAL_DEFS_H_