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54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
//=-- ubsan_signals_standalone.cc
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//------------------------------------------------===//
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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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// Installs signal handlers and related interceptors for UBSan standalone.
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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 "interception/interception.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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#include "ubsan_diag.h"
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#include "ubsan_init.h"
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#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
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#include "sanitizer_common/sanitizer_signal_interceptors.inc"
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namespace __ubsan {
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#if SANITIZER_FUCHSIA
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void InitializeDeadlySignals() {}
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#else
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static void OnStackUnwind(const SignalContext &sig, const void *,
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BufferedStackTrace *stack) {
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GetStackTrace(stack, kStackTraceMax, sig.pc, sig.bp, sig.context,
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common_flags()->fast_unwind_on_fatal);
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}
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static void UBsanOnDeadlySignal(int signo, void *siginfo, void *context) {
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HandleDeadlySignal(siginfo, context, GetTid(), &OnStackUnwind, nullptr);
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}
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static bool is_initialized = false;
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void InitializeDeadlySignals() {
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if (is_initialized)
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return;
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is_initialized = true;
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InitializeSignalInterceptors();
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InstallDeadlySignalHandlers(&UBsanOnDeadlySignal);
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}
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#endif
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} // namespace __ubsan
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#endif // CAN_SANITIZE_UB
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