f3737bbb12
As sandboxed pointers are now default-enabled when the sandbox is enabled, it is no longer possible to deactivate the sandbox at runtime. This CL therefore removes all the logic that was required to support a sandbox that could be disabled at runtime, moves the initialization of the sandbox into V8::Initialize, and deprecates V8::InitializeSandbox. This change also makes the sandbox initialization deterministic if FLAG_random_seed is supplied. Bug: v8:10391 Change-Id: Ibd49f7c251b7c58c642f18a551ecc2c391740970 Cq-Include-Trybots: luci.v8.try:v8_linux64_heap_sandbox_dbg_ng,v8_linux_arm64_sim_heap_sandbox_dbg_ng Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3762583 Reviewed-by: Toon Verwaest <verwaest@chromium.org> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Commit-Queue: Samuel Groß <saelo@chromium.org> Reviewed-by: Igor Sheludko <ishell@chromium.org> Cr-Commit-Position: refs/heads/main@{#81746}
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "include/libplatform/libplatform.h"
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#include "include/v8-context.h"
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#include "include/v8-initialization.h"
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#include "include/v8-isolate.h"
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#include "include/v8-local-handle.h"
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#include "include/v8-primitive.h"
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#include "include/v8-script.h"
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int main(int argc, char* argv[]) {
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// Initialize V8.
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v8::V8::InitializeICUDefaultLocation(argv[0]);
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v8::V8::InitializeExternalStartupData(argv[0]);
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std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();
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v8::V8::InitializePlatform(platform.get());
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v8::V8::Initialize();
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// Create a new Isolate and make it the current one.
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v8::Isolate::CreateParams create_params;
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create_params.array_buffer_allocator =
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v8::ArrayBuffer::Allocator::NewDefaultAllocator();
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v8::Isolate* isolate = v8::Isolate::New(create_params);
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{
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v8::Isolate::Scope isolate_scope(isolate);
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// Create a stack-allocated handle scope.
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v8::HandleScope handle_scope(isolate);
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// Create a new context.
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v8::Local<v8::Context> context = v8::Context::New(isolate);
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// Enter the context for compiling and running the hello world script.
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v8::Context::Scope context_scope(context);
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{
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// Create a string containing the JavaScript source code.
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v8::Local<v8::String> source =
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v8::String::NewFromUtf8Literal(isolate, "'Hello' + ', World!'");
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// Compile the source code.
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v8::Local<v8::Script> script =
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v8::Script::Compile(context, source).ToLocalChecked();
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// Run the script to get the result.
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v8::Local<v8::Value> result = script->Run(context).ToLocalChecked();
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// Convert the result to an UTF8 string and print it.
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v8::String::Utf8Value utf8(isolate, result);
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printf("%s\n", *utf8);
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}
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{
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// Use the JavaScript API to generate a WebAssembly module.
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//
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// |bytes| contains the binary format for the following module:
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//
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// (func (export "add") (param i32 i32) (result i32)
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// get_local 0
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// get_local 1
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// i32.add)
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//
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const char csource[] = R"(
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let bytes = new Uint8Array([
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0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x07, 0x01,
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0x60, 0x02, 0x7f, 0x7f, 0x01, 0x7f, 0x03, 0x02, 0x01, 0x00, 0x07,
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0x07, 0x01, 0x03, 0x61, 0x64, 0x64, 0x00, 0x00, 0x0a, 0x09, 0x01,
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0x07, 0x00, 0x20, 0x00, 0x20, 0x01, 0x6a, 0x0b
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]);
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let module = new WebAssembly.Module(bytes);
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let instance = new WebAssembly.Instance(module);
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instance.exports.add(3, 4);
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)";
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// Create a string containing the JavaScript source code.
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v8::Local<v8::String> source =
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v8::String::NewFromUtf8Literal(isolate, csource);
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// Compile the source code.
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v8::Local<v8::Script> script =
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v8::Script::Compile(context, source).ToLocalChecked();
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// Run the script to get the result.
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v8::Local<v8::Value> result = script->Run(context).ToLocalChecked();
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// Convert the result to a uint32 and print it.
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uint32_t number = result->Uint32Value(context).ToChecked();
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printf("3 + 4 = %u\n", number);
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}
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}
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// Dispose the isolate and tear down V8.
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isolate->Dispose();
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v8::V8::Dispose();
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v8::V8::DisposePlatform();
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delete create_params.array_buffer_allocator;
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return 0;
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}
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