1 //===- FuzzerBuiltins.h - Internal header for builtins ----------*- C++ -* ===//
2 //
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
6 //
7 //===----------------------------------------------------------------------===//
8 // Wrapper functions and marcos around builtin functions.
9 //===----------------------------------------------------------------------===//
10 
11 #ifndef LLVM_FUZZER_BUILTINS_H
12 #define LLVM_FUZZER_BUILTINS_H
13 
14 #include "FuzzerDefs.h"
15 
16 #if !LIBFUZZER_MSVC
17 #include <cstdint>
18 
19 #define GET_CALLER_PC() __builtin_return_address(0)
20 
21 namespace fuzzer {
22 
23 inline uint8_t  Bswap(uint8_t x)  { return x; }
24 inline uint16_t Bswap(uint16_t x) { return __builtin_bswap16(x); }
25 inline uint32_t Bswap(uint32_t x) { return __builtin_bswap32(x); }
26 inline uint64_t Bswap(uint64_t x) { return __builtin_bswap64(x); }
27 
28 inline uint32_t Clzll(unsigned long long X) { return __builtin_clzll(X); }
29 inline uint32_t Clz(unsigned long long X) { return __builtin_clz(X); }
30 inline int Popcountll(unsigned long long X) { return __builtin_popcountll(X); }
31 
32 }  // namespace fuzzer
33 
34 #endif  // !LIBFUZZER_MSVC
35 #endif  // LLVM_FUZZER_BUILTINS_H
36