libsanitizer/ubsan/ubsan_diag_standalone.cpp

   1 //===-- ubsan_diag_standalone.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 // Diagnostic reporting for the standalone UBSan runtime.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "ubsan_platform.h"
  14 #if CAN_SANITIZE_UB
  15 #include "ubsan_diag.h"
  16
  17 using namespace __ubsan;
  18
  19 void __sanitizer::BufferedStackTrace::UnwindImpl(
  20     uptr pc, uptr bp, void *context, bool request_fast, u32 max_depth) {
  21   uptr top = 0;
  22   uptr bottom = 0;
  23   GetThreadStackTopAndBottom(false, &top, &bottom);
  24   bool fast = StackTrace::WillUseFastUnwind(request_fast);
  25   Unwind(max_depth, pc, bp, context, top, bottom, fast);
  26 }
  27
  28 extern "C" {
  29 SANITIZER_INTERFACE_ATTRIBUTE
  30 void __sanitizer_print_stack_trace() {
  31   GET_CURRENT_PC_BP;
  32   BufferedStackTrace stack;
  33   stack.Unwind(pc, bp, nullptr, common_flags()->fast_unwind_on_fatal);
  34   stack.Print();
  35 }
  36 } // extern "C"
  37
  38 #endif  // CAN_SANITIZE_UB