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      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
     39