chromium/v8/src/sandbox/sandbox.cc

// Copyright 2021 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.

#include "src/sandbox/sandbox.h"

#include "include/v8-internal.h"
#include "src/base/bits.h"
#include "src/base/bounded-page-allocator.h"
#include "src/base/cpu.h"
#include "src/base/emulated-virtual-address-subspace.h"
#include "src/base/lazy-instance.h"
#include "src/base/sys-info.h"
#include "src/base/utils/random-number-generator.h"
#include "src/base/virtual-address-space-page-allocator.h"
#include "src/base/virtual-address-space.h"
#include "src/flags/flags.h"
#include "src/sandbox/hardware-support.h"
#include "src/sandbox/sandboxed-pointer.h"
#include "src/trap-handler/trap-handler.h"
#include "src/utils/allocation.h"

namespace v8 {
namespace internal {

#ifdef V8_ENABLE_SANDBOX

// Best-effort function to determine the approximate size of the virtual
// address space that can be addressed by this process. Used to determine
// appropriate sandbox size and placement.
// The value returned by this function will always be a power of two.
static Address DetermineAddressSpaceLimit() { … }

void Sandbox::Initialize(v8::VirtualAddressSpace* vas) { … }

bool Sandbox::Initialize(v8::VirtualAddressSpace* vas, size_t size,
                         bool use_guard_regions) { … }

bool Sandbox::InitializeAsPartiallyReservedSandbox(v8::VirtualAddressSpace* vas,
                                                   size_t size,
                                                   size_t size_to_reserve) { … }

void Sandbox::FinishInitialization() { … }

void Sandbox::InitializeConstants() { … }

void Sandbox::TearDown() { … }

DEFINE_LAZY_LEAKY_OBJECT_GETTER(…)

#endif  // V8_ENABLE_SANDBOX

}  // namespace internal
}  // namespace v8