1//===- FuzzerExtFunctions.def - External functions --------------*- 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// This defines the external function pointers that
9// ``fuzzer::ExternalFunctions`` should contain and try to initialize. The
10// EXT_FUNC macro must be defined at the point of inclusion. The signature of
11// the macro is:
12//
13// EXT_FUNC(<name>, <return_type>, <function_signature>, <warn_if_missing>)
14//===----------------------------------------------------------------------===//
15
16// Optional user functions
17EXT_FUNC(LLVMFuzzerInitialize, int, (int *argc, char ***argv), false);
18EXT_FUNC(LLVMFuzzerCustomMutator, size_t,
19 (uint8_t *Data, size_t Size, size_t MaxSize, unsigned int Seed),
20 false);
21EXT_FUNC(LLVMFuzzerCustomCrossOver, size_t,
22 (const uint8_t *Data1, size_t Size1,
23 const uint8_t *Data2, size_t Size2,
24 uint8_t *Out, size_t MaxOutSize, unsigned int Seed),
25 false);
26
27// Sanitizer functions
28EXT_FUNC(__lsan_enable, void, (), false);
29EXT_FUNC(__lsan_disable, void, (), false);
30EXT_FUNC(__lsan_do_recoverable_leak_check, int, (), false);
31EXT_FUNC(__sanitizer_acquire_crash_state, int, (), true);
32EXT_FUNC(__sanitizer_install_malloc_and_free_hooks, int,
33 (void (*malloc_hook)(const volatile void *, size_t),
34 void (*free_hook)(const volatile void *)),
35 false);
36EXT_FUNC(__sanitizer_log_write, void, (const char *buf, size_t len), false);
37EXT_FUNC(__sanitizer_purge_allocator, void, (), false);
38EXT_FUNC(__sanitizer_print_memory_profile, void, (size_t, size_t), false);
39EXT_FUNC(__sanitizer_print_stack_trace, void, (), true);
40EXT_FUNC(__sanitizer_symbolize_pc, void,
41 (void *, const char *fmt, char *out_buf, size_t out_buf_size), false);
42EXT_FUNC(__sanitizer_get_module_and_offset_for_pc, int,
43 (void *pc, char *module_path,
44 size_t module_path_len,void **pc_offset), false);
45EXT_FUNC(__sanitizer_set_death_callback, void, (void (*)(void)), true);
46EXT_FUNC(__sanitizer_set_report_fd, void, (void*), false);
47EXT_FUNC(__msan_scoped_disable_interceptor_checks, void, (), false);
48EXT_FUNC(__msan_scoped_enable_interceptor_checks, void, (), false);
49EXT_FUNC(__msan_unpoison, void, (const volatile void *, size_t size), false);
50EXT_FUNC(__msan_unpoison_param, void, (size_t n), false);
51