1//===-- ubsan_init.cpp ----------------------------------------------------===//
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//
9// Initialization of UBSan runtime.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ubsan_platform.h"
14#if CAN_SANITIZE_UB
15#include "ubsan_diag.h"
16#include "ubsan_init.h"
17#include "ubsan_flags.h"
18#include "sanitizer_common/sanitizer_common.h"
19#include "sanitizer_common/sanitizer_libc.h"
20#include "sanitizer_common/sanitizer_mutex.h"
21#include "sanitizer_common/sanitizer_symbolizer.h"
22
23using namespace __ubsan;
24
25const char *__ubsan::GetSanititizerToolName() {
26  return "UndefinedBehaviorSanitizer";
27}
28
29static bool ubsan_initialized;
30static StaticSpinMutex ubsan_init_mu;
31
32static void CommonInit() {
33  InitializeSuppressions();
34}
35
36static void CommonStandaloneInit() {
37  SanitizerToolName = GetSanititizerToolName();
38  CacheBinaryName();
39  InitializeFlags();
40  __sanitizer_set_report_path(common_flags()->log_path);
41  AndroidLogInit();
42  InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
43  CommonInit();
44}
45
46void __ubsan::InitAsStandalone() {
47  SpinMutexLock l(&ubsan_init_mu);
48  if (!ubsan_initialized) {
49    CommonStandaloneInit();
50    ubsan_initialized = true;
51  }
52}
53
54void __ubsan::InitAsStandaloneIfNecessary() { return InitAsStandalone(); }
55
56void __ubsan::InitAsPlugin() {
57  SpinMutexLock l(&ubsan_init_mu);
58  if (!ubsan_initialized) {
59    CommonInit();
60    ubsan_initialized = true;
61  }
62}
63
64#endif  // CAN_SANITIZE_UB
65