libsanitizer/ubsan/ubsan_init.cc

   1 //===-- ubsan_init.cc -----------------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // Initialization of UBSan runtime.
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 #include "ubsan_platform.h"
  13 #if CAN_SANITIZE_UB
  14 #include "ubsan_diag.h"
  15 #include "ubsan_init.h"
  16 #include "ubsan_flags.h"
  17 #include "sanitizer_common/sanitizer_common.h"
  18 #include "sanitizer_common/sanitizer_libc.h"
  19 #include "sanitizer_common/sanitizer_mutex.h"
  20 #include "sanitizer_common/sanitizer_symbolizer.h"
  21
  22 using namespace __ubsan;
  23
  24 const char *__ubsan::GetSanititizerToolName() {
  25   return "UndefinedBehaviorSanitizer";
  26 }
  27
  28 static bool ubsan_initialized;
  29 static StaticSpinMutex ubsan_init_mu;
  30
  31 static void CommonInit() {
  32   InitializeSuppressions();
  33 }
  34
  35 static void CommonStandaloneInit() {
  36   SanitizerToolName = GetSanititizerToolName();
  37   CacheBinaryName();
  38   InitializeFlags();
  39   __sanitizer_set_report_path(common_flags()->log_path);
  40   AndroidLogInit();
  41   InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
  42   CommonInit();
  43 }
  44
  45 void __ubsan::InitAsStandalone() {
  46   SpinMutexLock l(&ubsan_init_mu);
  47   if (!ubsan_initialized) {
  48     CommonStandaloneInit();
  49     ubsan_initialized = true;
  50   }
  51 }
  52
  53 void __ubsan::InitAsStandaloneIfNecessary() { return InitAsStandalone(); }
  54
  55 void __ubsan::InitAsPlugin() {
  56   SpinMutexLock l(&ubsan_init_mu);
  57   if (!ubsan_initialized) {
  58     CommonInit();
  59     ubsan_initialized = true;
  60   }
  61 }
  62
  63 #endif  // CAN_SANITIZE_UB