Move some LLInt globals into JSC::Config.
https://bugs.webkit.org/show_bug.cgi?id=216685
rdar://68964544

Reviewed by Keith Miller.

Source/bmalloc:

Introduce ConfigAlignment to match WTFConfig.h.
Added BENABLE(UNIFIED_AND_FREEZABLE_CONFIG_RECORD) support to match WTF.

* bmalloc/BPlatform.h:
* bmalloc/Gigacage.cpp:
(Gigacage::ensureGigacage):
* bmalloc/GigacageConfig.h:
* bmalloc/mbmalloc.cpp:

Source/JavaScriptCore:

1. Moved the following into g_jscConfig:

   Data::s_exceptionInstructions ==> g_jscConfig.llint.exceptionInstructions
   Data::s_wasmExceptionInstructions ==> g_jscConfig.llint.wasmExceptionInstructions
   g_opcodeMap ==> g_jscConfig.llint.opcodeMap
   g_opcodeMapWide16 ==> g_jscConfig.llint.opcodeMapWide16
   g_opcodeMapWide32 ==> g_jscConfig.llint.opcodeMapWide32

2. Fixed cloop.rb so that it can take an offset for the leap offlineasm instruction.
3. Fixed x86.rb so that it can take an offset for the leap offlineasm instruction.
4. Fixed arm.rb so that it can take an offset for the leap offlineasm instruction.

   Note: arm64.rb already does this right.

5. Added JSC::Config::singleton() to return a reference to g_jscConfig.
   This is useful when debugging with lldb since g_jscConfig is not an actual
   label, but is a macro that computes the address of the Config record.

This patch has been smoke tested on arm64e, x86_64, and cloop (on x86_64 and armv7k).

* llint/LLIntData.cpp:
(JSC::LLInt::LLIntInitializeAssertScope::LLIntInitializeAssertScope):
(JSC::LLInt::LLIntInitializeAssertScope::~LLIntInitializeAssertScope):
(JSC::LLInt::LLIntInitializeAssertScope::assertInitializationIsAllowed):
(JSC::LLInt::initialize):
* llint/LLIntData.h:
(JSC::LLInt::exceptionInstructions):
(JSC::LLInt::wasmExceptionInstructions):
(JSC::LLInt::opcodeMap):
(JSC::LLInt::opcodeMapWide16):
(JSC::LLInt::opcodeMapWide32):
(JSC::LLInt::getOpcode):
(JSC::LLInt::getOpcodeWide16):
(JSC::LLInt::getOpcodeWide32):
* llint/LowLevelInterpreter.asm:
* llint/LowLevelInterpreter.cpp:
* llint/LowLevelInterpreter64.asm:
* llint/WebAssembly.asm:
* offlineasm/arm.rb:
* offlineasm/cloop.rb:
* offlineasm/x86.rb:
* runtime/JSCConfig.cpp:
(JSC::Config::singleton):
* runtime/JSCConfig.h:

Source/WTF:

1. Introduce ConfigAlignment as a distinct value from ConfigSizeToProtect.
   This is because ConfigSizeToProtect is now larger than 1 CeilingOnPageSize on
   some platforms, but ConfigAlignment only needs to match CeilingOnPageSize.

2. Introduced ENABLE(UNIFIED_AND_FREEZABLE_CONFIG_RECORD) to disable using the
   unified g_config record for Windows ports.

   This is needed because WTF is built as a DLL on Windows.  offlineasm does not
   know how to resolve a DLL exported variable.  Additionally, the Windows ports
   have never supported freezing of the Config record to begin with.  So, we're
   working around this by disabling ENABLE(UNIFIED_AND_FREEZABLE_CONFIG_RECORD)
   for Windows.  This allows JSC to have its own g_jscConfig record, which solves
   this issue for now.

* wtf/PlatformEnable.h:
* wtf/WTFConfig.cpp:
(WTF::Config::permanentlyFreeze):
* wtf/WTFConfig.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@267371 268f45cc-cd09-0410-ab3c-d52691b4dbfc
21 files changed
tree: ce78f67c7dc28f1eea28301ecc7396c2142097ab
  1. JSTests/
  2. LayoutTests/
  3. ManualTests/
  4. PerformanceTests/
  5. Source/
  6. Tools/
  7. WebDriverTests/
  8. WebKit.xcworkspace/
  9. WebKitLibraries/
  10. Websites/
  11. .clang-format
  12. .dir-locals.el
  13. .editorconfig
  14. .gitattributes
  15. .gitignore
  16. ChangeLog
  17. ChangeLog-2012-05-22
  18. ChangeLog-2018-01-01
  19. CMakeLists.txt
  20. Makefile
  21. Makefile.shared
  22. ReadMe.md
ReadMe.md

WebKit

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Feature Status

Visit WebKit Feature Status page to see which Web API has been implemented, in development, or under consideration.

Trying the Latest

On macOS, download Safari Technology Preview to test the latest version of WebKit. On Linux, download Epiphany Technology Preview. On Windows, you'll have to build it yourself.

Reporting Bugs

  1. Search WebKit Bugzilla to see if there is an existing report for the bug you've encountered.
  2. Create a Bugzilla account to to report bugs (and to comment on them) if you haven't done so already.
  3. File a bug in accordance with our guidelines.

Once your bug is filed, you will receive email when it is updated at each stage in the bug life cycle. After the bug is considered fixed, you may be asked to download the latest nightly and confirm that the fix works for you.

Getting the Code

On Windows, follow the instructions on our website.

Cloning the Git SVN Repository

Run the following command to clone WebKit's Git SVN repository:

git clone git://git.webkit.org/WebKit.git WebKit

or

git clone https://git.webkit.org/git/WebKit.git WebKit

If you want to be able to commit changes to the repository, or just want to check out branches that aren’t contained in WebKit.git, you will need track WebKit's Subversion repository. You can run the following command to configure this and other options of the new Git clone for WebKit development.

Tools/Scripts/webkit-patch setup-git-clone

For information about this, and other aspects of using Git with WebKit, read the wiki page.

Checking out the Subversion Repository

If you don‘t want to use Git, run the following command to check out WebKit’s Subversion repository:

svn checkout https://svn.webkit.org/repository/webkit/trunk WebKit

Building WebKit

Building macOS Port

Install Xcode and its command line tools if you haven't done so already:

  1. Install Xcode Get Xcode from https://developer.apple.com/downloads. To build WebKit for OS X, Xcode 5.1.1 or later is required. To build WebKit for iOS Simulator, Xcode 7 or later is required.
  2. Install the Xcode Command Line Tools In Terminal, run the command: xcode-select --install

Run the following command to build a debug build with debugging symbols and assertions:

Tools/Scripts/build-webkit --debug

For performance testing, and other purposes, use --release instead.

Using Xcode

You can open WebKit.xcworkspace to build and debug WebKit within Xcode.

If you don't use a custom build location in Xcode preferences, you have to update the workspace settings to use WebKitBuild directory. In menu bar, choose File > Workspace Settings, then click the Advanced button, select “Custom”, “Relative to Workspace”, and enter WebKitBuild for both Products and Intermediates.

Building iOS Port

The first time after you install a new Xcode, you will need to run the following command to enable Xcode to build command line tools for iOS Simulator:

sudo Tools/Scripts/configure-xcode-for-ios-development

Without this step, you will see the error message: “target specifies product type ‘com.apple.product-type.tool’, but there’s no such product type for the ‘iphonesimulator’ platform.” when building target JSCLLIntOffsetsExtractor of project JavaScriptCore.

Run the following command to build a debug build with debugging symbols and assertions for iOS:

Tools/Scripts/build-webkit --debug --ios-simulator

Building the GTK+ Port

For production builds:

cmake -DPORT=GTK -DCMAKE_BUILD_TYPE=RelWithDebInfo -GNinja
ninja
sudo ninja install

For development builds:

Tools/gtk/install-dependencies
Tools/Scripts/update-webkitgtk-libs
Tools/Scripts/build-webkit --gtk --debug

For more information on building WebKitGTK+, see the wiki page.

Building the WPE Port

For production builds:

cmake -DPORT=WPE -DCMAKE_BUILD_TYPE=RelWithDebInfo -GNinja
ninja
sudo ninja install

For development builds:

Tools/wpe/install-dependencies
Tools/Scripts/update-webkitwpe-libs
Tools/Scripts/build-webkit --wpe --debug

Building Windows Port

For building WebKit on Windows, see the wiki page.

Running WebKit

With Safari and Other macOS Applications

Run the following command to launch Safari with your local build of WebKit:

Tools/Scripts/run-safari --debug

The run-safari script sets the DYLD_FRAMEWORK_PATH environment variable to point to your build products, and then launches /Applications/Safari.app. DYLD_FRAMEWORK_PATH tells the system loader to prefer your build products over the frameworks installed in /System/Library/Frameworks.

To run other applications with your local build of WebKit, run the following command:

Tools/Scripts/run-webkit-app <application-path>

iOS Simulator

Run the following command to launch iOS simulator with your local build of WebKit:

run-safari --debug --ios-simulator

In both cases, if you have built release builds instead, use --release instead of --debug.

Linux Ports

If you have a development build, you can use the run-minibrowser script, e.g.:

run-minibrowser --debug --wpe

Pass one of --gtk, --jsc-only, or --wpe to indicate the port to use.

Contribute

Congratulations! You’re up and running. Now you can begin coding in WebKit and contribute your fixes and new features to the project. For details on submitting your code to the project, read Contributing Code.