forked from OSchip/llvm-project
84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
//===-- ubsan_init.cc -----------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Initialization of UBSan runtime.
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//
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//===----------------------------------------------------------------------===//
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#include "ubsan_platform.h"
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#if CAN_SANITIZE_UB
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#include "ubsan_diag.h"
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#include "ubsan_init.h"
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#include "ubsan_flags.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_libc.h"
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#include "sanitizer_common/sanitizer_mutex.h"
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#include "sanitizer_common/sanitizer_symbolizer.h"
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using namespace __ubsan;
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const char *__ubsan::GetSanititizerToolName() {
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return "UndefinedBehaviorSanitizer";
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}
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static enum {
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UBSAN_MODE_UNKNOWN = 0,
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UBSAN_MODE_STANDALONE,
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UBSAN_MODE_PLUGIN
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} ubsan_mode;
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static StaticSpinMutex ubsan_init_mu;
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static void CommonInit() {
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InitializeSuppressions();
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}
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static void CommonStandaloneInit() {
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SanitizerToolName = GetSanititizerToolName();
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InitializeFlags();
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CacheBinaryName();
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__sanitizer_set_report_path(common_flags()->log_path);
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AndroidLogInit();
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InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
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CommonInit();
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ubsan_mode = UBSAN_MODE_STANDALONE;
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}
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void __ubsan::InitAsStandalone() {
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if (SANITIZER_CAN_USE_PREINIT_ARRAY) {
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CHECK_EQ(UBSAN_MODE_UNKNOWN, ubsan_mode);
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CommonStandaloneInit();
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return;
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}
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SpinMutexLock l(&ubsan_init_mu);
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CHECK_NE(UBSAN_MODE_PLUGIN, ubsan_mode);
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if (ubsan_mode == UBSAN_MODE_UNKNOWN)
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CommonStandaloneInit();
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}
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void __ubsan::InitAsStandaloneIfNecessary() {
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if (SANITIZER_CAN_USE_PREINIT_ARRAY) {
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CHECK_NE(UBSAN_MODE_UNKNOWN, ubsan_mode);
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return;
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}
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SpinMutexLock l(&ubsan_init_mu);
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if (ubsan_mode == UBSAN_MODE_UNKNOWN)
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CommonStandaloneInit();
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}
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void __ubsan::InitAsPlugin() {
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#if !SANITIZER_CAN_USE_PREINIT_ARRAY
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SpinMutexLock l(&ubsan_init_mu);
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#endif
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CHECK_EQ(UBSAN_MODE_UNKNOWN, ubsan_mode);
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CommonInit();
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ubsan_mode = UBSAN_MODE_PLUGIN;
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}
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#endif // CAN_SANITIZE_UB
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