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
17using namespace __ubsan;
18
19void __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  if (StackTrace::WillUseFastUnwind(request_fast)) {
24    GetThreadStackTopAndBottom(false, &top, &bottom);
25    Unwind(max_depth, pc, bp, nullptr, top, bottom, true);
26  } else
27    Unwind(max_depth, pc, bp, context, 0, 0, false);
28}
29
30extern "C" {
31SANITIZER_INTERFACE_ATTRIBUTE
32void __sanitizer_print_stack_trace() {
33  GET_CURRENT_PC_BP;
34  BufferedStackTrace stack;
35  stack.Unwind(pc, bp, nullptr, common_flags()->fast_unwind_on_fatal);
36  stack.Print();
37}
38} // extern "C"
39
40#endif  // CAN_SANITIZE_UB
41