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Leszek Swirski f577b2bb38 [frames] Make interpreted frame detection stricter 
When iterating over stack frames, make the interpreted frame detection
require that the frame header contains the bytecode array.

Currently, the stack frame iterator supports bytecode handlers that
don't create stack frames by checking if the top of the stack (i.e. the
return address) is the interpreter entry trampoline. However, optimized
code tail called from the interpreter entry trampoline can move the
stack pointer without clearing the stack, which means it can end up with
a pointer into the interpreter entry trampoline on the top of its stack
(in an uninitialized value), and be interpreted as an interpreted frame.

To avoid such optimized code frames being interpreted as interpreted
frames, we now additionally test the frame header, to see if it contains
a BytecodeArray.

Change-Id: I4bafcf0f7ce3c973a2e5a312f054d72312bb8a70
Reviewed-on: https://chromium-review.googlesource.com/535646
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45951}
2017-06-14 15:16:51 +00:00
benchmarks Revert "Refactoring: Make gtest testsuite the default." 2014-09-02 09:17:26 +00:00
build_overrides Remove build_overrides/v8.gni. 2017-01-26 20:18:58 +00:00
docs [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
gni [build] Split v8_base on static-library builds on windows 2017-06-13 18:26:53 +00:00
gypfiles [build] Fix cfi build 2017-06-14 12:00:09 +00:00
include [cleanup] Make V8_NORETURN use the [[noreturn]] annotation 2017-06-13 14:27:56 +00:00
infra [build] Prepare switching cfi bot to GN 2017-06-12 11:07:36 +00:00
samples Reland of land "Turn libbase into a component" (patchset #1 id:1 of https://codereview.chromium.org/2396933002/ ) 2016-10-07 07:56:52 +00:00
src [frames] Make interpreted frame detection stricter 2017-06-14 15:16:51 +00:00
test [inspector] expose module variables for Debugger.evaluateOnCallFrame method 2017-06-14 14:58:12 +00:00
testing Use GTEST_LANG_CXX11 in V8 2016-07-25 13:06:42 +00:00
third_party Roll third_party/inspector_protocol to efefa86c3183d307f0a0e53bf568fe57c5b58849 2017-04-28 01:43:03 +00:00
tools [cleanup] Refactor parts of builtins-number-gen.cc 2017-06-14 12:42:27 +00:00
.clang-format [clang-format] Don't derive pointer alignment 2017-01-17 09:28:19 +00:00
.gitignore [build] Always keep gold plugin in sync with clang version 2017-05-30 13:41:18 +00:00
.gn For building v8 using gn on aix_ppc64, linux_s390x and linux_ppc64(both LE and BE). 2017-05-12 01:35:09 +00:00
.ycm_extra_conf.py Use C++11 / gnu++11, not 0x 2016-03-22 15:24:43 +00:00
AUTHORS [parsing] Fix past the end position for streaming streams. 2017-06-09 11:35:24 +00:00
BUILD.gn [builtins] Move most WeakMap/WeakSet code from JS to C++ builtins 2017-06-13 19:12:15 +00:00
ChangeLog [Release] Update ChangeLog file 2016-02-17 21:29:09 +00:00
CODE_OF_CONDUCT.md Explicitly state that the Chromium Code of Conduct also applies to V8 2016-03-02 09:51:24 +00:00
codereview.settings Change presubmit to reference actually existing bot 2017-05-30 09:31:18 +00:00
DEPS Update V8 DEPS. 2017-06-14 06:50:18 +00:00
LICENSE Updates to the license information of third party components. 2015-06-16 12:37:50 +00:00
LICENSE.fdlibm Add LICENSE.fdlibm for all the fdlibm imported sources. 2016-06-09 07:17:03 +00:00
LICENSE.strongtalk Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.v8 Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
LICENSE.valgrind Add LICENSE.v8, LICENSE.strongtalk and LICENSE.valgrind to the v8 2011-02-03 07:10:06 +00:00
Makefile [build] Life support for top-level Makefile. 2017-06-07 13:10:40 +00:00
Makefile.android [build] Fix d8-for-Android builds 2016-05-20 12:10:45 +00:00
OWNERS Add COMPONENT tags to OWNERS files where appropriate 2017-05-22 10:15:28 +00:00
PRESUBMIT.py [test] Automatically add a noi18n bot for changes affecting Intl 2017-06-06 13:01:14 +00:00
README.md [Docs] Removed unused docs because they are moved to GitHub 2015-11-19 10:23:30 +00:00
snapshot_toolchain.gni MIPS[64]: Add support for big endian build using GN 2017-06-02 15:02:18 +00:00
WATCHLISTS [V8Tracing] Add lpy@ and fmeawad@ into watchlist for tracing/. 2017-05-22 19:40:17 +00:00

README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://github.com/v8/v8/wiki

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned on the V8 wiki.