blob: 09673c8cccf7f6dd03cf3660a9fbe0c1a0d634aa [file] [log] [blame]
// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file implements the support code for the out of bounds trap handler.
// Nothing in here actually runs in the trap handler, but the code here
// manipulates data structures used by the trap handler so we still need to be
// careful. In order to minimize this risk, here are some rules to follow.
// 1. Avoid introducing new external dependencies. The files in src/trap-handler
// should be as self-contained as possible to make it easy to audit the code.
// 2. Any changes must be reviewed by someone from the crash reporting
// or security team. Se OWNERS for suggested reviewers.
// For more information, see
// For the code that runs in the trap handler itself, see
#include <windows.h>
#include "src/trap-handler/handler-inside-win.h"
#include "src/trap-handler/trap-handler.h"
namespace v8 {
namespace internal {
namespace trap_handler {
namespace {
// A handle to our registered exception handler, so that we can remove it
// again later.
void* g_registered_handler = nullptr;
} // namespace
bool RegisterDefaultTrapHandler() {
constexpr ULONG first = TRUE;
g_registered_handler = AddVectoredExceptionHandler(first, HandleWasmTrap);
return nullptr != g_registered_handler;
void RemoveTrapHandler() {
if (!g_registered_handler) return;
g_registered_handler = nullptr;
} // namespace trap_handler
} // namespace internal
} // namespace v8