contrib/compiler-rt/lib/ubsan/ubsan_init.cc

   1 //===-- ubsan_init.cc -----------------------------------------------------===//
   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
  23 using namespace __ubsan;
  24
  25 const char *__ubsan::GetSanititizerToolName() {
  26   return "UndefinedBehaviorSanitizer";
  27 }
  28
  29 static bool ubsan_initialized;
  30 static StaticSpinMutex ubsan_init_mu;
  31
  32 static void CommonInit() {
  33   InitializeSuppressions();
  34 }
  35
  36 static 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
  46 void __ubsan::InitAsStandalone() {
  47   SpinMutexLock l(&ubsan_init_mu);
  48   if (!ubsan_initialized) {
  49     CommonStandaloneInit();
  50     ubsan_initialized = true;
  51   }
  52 }
  53
  54 void __ubsan::InitAsStandaloneIfNecessary() { return InitAsStandalone(); }
  55
  56 void __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