Changeset 187677 in webkit for trunk/Source/JavaScriptCore/parser/SourceProvider.h

Timestamp:

Jul 31, 2015, 1:34:50 PM (10 years ago)

Author:

[email protected]

Message:

Implement WebAssembly module parser
​https://bugs.webkit.org/show_bug.cgi?id=147293

Patch by Sukolsak Sakshuwong <Sukolsak Sakshuwong> on 2015-07-31
Reviewed by Mark Lam.

Re-landing after fix for the "..\..\jsc.cpp(46): fatal error C1083: Cannot open
include file: 'JSWASMModule.h'" issue on Windows.

Implement WebAssembly module parser for WebAssembly files produced by pack-asmjs
<​https://github.com/WebAssembly/polyfill-prototype-1>. This patch only checks
the magic number at the beginning of the files. Parsing of the rest will be
implemented in a subsequent patch.

• CMakeLists.txt:
• JavaScriptCore.vcxproj/JavaScriptCore.vcxproj:
• JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters:
• JavaScriptCore.xcodeproj/project.pbxproj:
• jsc.cpp:

(GlobalObject::finishCreation):
(functionLoadWebAssembly):

• parser/SourceProvider.h:

(JSC::WebAssemblySourceProvider::create):
(JSC::WebAssemblySourceProvider::data):
(JSC::WebAssemblySourceProvider::WebAssemblySourceProvider):

• runtime/JSGlobalObject.cpp:

(JSC::JSGlobalObject::init):
(JSC::JSGlobalObject::visitChildren):

• runtime/JSGlobalObject.h:

(JSC::JSGlobalObject::wasmModuleStructure):

• wasm/WASMMagicNumber.h: Added.
• wasm/WASMModuleParser.cpp: Added.

(JSC::WASMModuleParser::WASMModuleParser):
(JSC::WASMModuleParser::parse):
(JSC::WASMModuleParser::parseModule):
(JSC::parseWebAssembly):

• wasm/WASMModuleParser.h: Added.
• wasm/WASMReader.cpp: Added.

(JSC::WASMReader::readUnsignedInt32):
(JSC::WASMReader::readFloat):
(JSC::WASMReader::readDouble):

• wasm/WASMReader.h: Added.

(JSC::WASMReader::WASMReader):

File:

• trunk/Source/JavaScriptCore/parser/SourceProvider.h (modified) (1 diff)

trunk/Source/JavaScriptCore/parser/SourceProvider.h

@@ -95 +95 @@
     };
     
+#if ENABLE(WEBASSEMBLY)
+    class WebAssemblySourceProvider : public SourceProvider {
+    public:
+        static Ref<WebAssemblySourceProvider> create(const Vector<uint8_t>& data, const String& url)
+        {
+            return adoptRef(*new WebAssemblySourceProvider(data, url));
+        }
+
+        virtual const String& source() const override
+        {
+            return m_source;
+        }
+
+        const Vector<uint8_t>& data() const
+        {
+            return m_data;
+        }
+
+    private:
+        WebAssemblySourceProvider(const Vector<uint8_t>& data, const String& url)
+            : SourceProvider(url, TextPosition::minimumPosition())
+            , m_source("[WebAssembly source]")
+            , m_data(data)
+        {
+        }
+
+        String m_source;
+        Vector<uint8_t> m_data;
+    };
+#endif
+
 } // namespace JSC