webkitgtk-2.10.2webkitgtk-2.10.2

1 files changed, 172 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/llint/LLIntData.cpp b/Source/JavaScriptCore/llint/LLIntData.cpp
new file mode 100644
index 000000000..e926f52dc
--- /dev/null
+++ b/Source/JavaScriptCore/llint/LLIntData.cpp
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "LLIntData.h"
+#include "BytecodeConventions.h"
+#include "CodeType.h"
+#include "Instruction.h"
+#include "JSScope.h"
+#include "LLIntCLoop.h"
+#include "MaxFrameExtentForSlowPathCall.h"
+#include "Opcode.h"
+#include "PropertyOffset.h"
+
+namespace JSC { namespace LLInt {
+
+Instruction* Data::s_exceptionInstructions = 0;
+Opcode Data::s_opcodeMap[numOpcodeIDs] = { };
+
+#if ENABLE(JIT)
+extern "C" void llint_entry(void*);
+#endif
+
+void initialize()
+{
+    Data::s_exceptionInstructions = new Instruction[maxOpcodeLength + 1];
+
+#if !ENABLE(JIT)
+    CLoop::initialize();
+
+#else // ENABLE(JIT)
+    llint_entry(&Data::s_opcodeMap);
+
+    for (int i = 0; i < maxOpcodeLength + 1; ++i)
+        Data::s_exceptionInstructions[i].u.pointer =
+            LLInt::getCodePtr(llint_throw_from_slow_path_trampoline);
+#endif // ENABLE(JIT)
+}
+
+#if COMPILER(CLANG)
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wmissing-noreturn"
+#endif
+void Data::performAssertions(VM& vm)
+{
+    UNUSED_PARAM(vm);
+    
+    // Assertions to match LowLevelInterpreter.asm.  If you change any of this code, be
+    // prepared to change LowLevelInterpreter.asm as well!!
+
+#ifndef NDEBUG
+#if USE(JSVALUE64)
+    const ptrdiff_t PtrSize = 8;
+    const ptrdiff_t CallFrameHeaderSlots = 5;
+#else // USE(JSVALUE64) // i.e. 32-bit version
+    const ptrdiff_t PtrSize = 4;
+    const ptrdiff_t CallFrameHeaderSlots = 4;
+#endif
+    const ptrdiff_t SlotSize = 8;
+#endif
+
+    ASSERT(sizeof(void*) == PtrSize);
+    ASSERT(sizeof(Register) == SlotSize);
+    ASSERT(JSStack::CallFrameHeaderSize == CallFrameHeaderSlots);
+
+    ASSERT(!CallFrame::callerFrameOffset());
+    ASSERT(JSStack::CallerFrameAndPCSize == (PtrSize * 2) / SlotSize);
+    ASSERT(CallFrame::returnPCOffset() == CallFrame::callerFrameOffset() + PtrSize);
+    ASSERT(JSStack::CodeBlock * sizeof(Register) == CallFrame::returnPCOffset() + PtrSize);
+    ASSERT(JSStack::Callee * sizeof(Register) == JSStack::CodeBlock * sizeof(Register) + SlotSize);
+    ASSERT(JSStack::ArgumentCount * sizeof(Register) == JSStack::Callee * sizeof(Register) + SlotSize);
+    ASSERT(JSStack::ThisArgument * sizeof(Register) == JSStack::ArgumentCount * sizeof(Register) + SlotSize);
+    ASSERT(JSStack::CallFrameHeaderSize == JSStack::ThisArgument);
+
+    ASSERT(CallFrame::argumentOffsetIncludingThis(0) == JSStack::ThisArgument);
+
+#if CPU(BIG_ENDIAN)
+    ASSERT(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag) == 0);
+    ASSERT(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload) == 4);
+#else
+    ASSERT(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag) == 4);
+    ASSERT(OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload) == 0);
+#endif
+#if USE(JSVALUE32_64)
+    ASSERT(JSValue::Int32Tag == static_cast<unsigned>(-1));
+    ASSERT(JSValue::BooleanTag == static_cast<unsigned>(-2));
+    ASSERT(JSValue::NullTag == static_cast<unsigned>(-3));
+    ASSERT(JSValue::UndefinedTag == static_cast<unsigned>(-4));
+    ASSERT(JSValue::CellTag == static_cast<unsigned>(-5));
+    ASSERT(JSValue::EmptyValueTag == static_cast<unsigned>(-6));
+    ASSERT(JSValue::DeletedValueTag == static_cast<unsigned>(-7));
+    ASSERT(JSValue::LowestTag == static_cast<unsigned>(-7));
+#else
+    ASSERT(TagBitTypeOther == 0x2);
+    ASSERT(TagBitBool == 0x4);
+    ASSERT(TagBitUndefined == 0x8);
+    ASSERT(ValueEmpty == 0x0);
+    ASSERT(ValueFalse == (TagBitTypeOther | TagBitBool));
+    ASSERT(ValueTrue == (TagBitTypeOther | TagBitBool | 1));
+    ASSERT(ValueUndefined == (TagBitTypeOther | TagBitUndefined));
+    ASSERT(ValueNull == TagBitTypeOther);
+#endif
+#if (CPU(X86_64) && !OS(WINDOWS)) || CPU(ARM64) || !ENABLE(JIT)
+    ASSERT(!maxFrameExtentForSlowPathCall);
+#elif CPU(ARM) || CPU(SH4)
+    ASSERT(maxFrameExtentForSlowPathCall == 24);
+#elif CPU(X86) || CPU(MIPS)
+    ASSERT(maxFrameExtentForSlowPathCall == 40);
+#elif CPU(X86_64) && OS(WINDOWS)
+    ASSERT(maxFrameExtentForSlowPathCall == 64);
+#endif
+    ASSERT(StringType == 6);
+    ASSERT(ObjectType == 18);
+    ASSERT(FinalObjectType == 19);
+    ASSERT(MasqueradesAsUndefined == 1);
+    ASSERT(ImplementsHasInstance == 2);
+    ASSERT(ImplementsDefaultHasInstance == 8);
+    ASSERT(FirstConstantRegisterIndex == 0x40000000);
+    ASSERT(GlobalCode == 0);
+    ASSERT(EvalCode == 1);
+    ASSERT(FunctionCode == 2);
+
+    static_assert(GlobalProperty == 0, "LLInt assumes GlobalProperty ResultType is == 0");
+    static_assert(GlobalVar == 1, "LLInt assumes GlobalVar ResultType is == 1");
+    static_assert(ClosureVar == 2, "LLInt assumes ClosureVar ResultType is == 2");
+    static_assert(LocalClosureVar == 3, "LLInt assumes LocalClosureVar ResultType is == 3");
+    static_assert(GlobalPropertyWithVarInjectionChecks == 4, "LLInt assumes GlobalPropertyWithVarInjectionChecks ResultType is == 4");
+    static_assert(GlobalVarWithVarInjectionChecks == 5, "LLInt assumes GlobalVarWithVarInjectionChecks ResultType is == 5");
+    static_assert(ClosureVarWithVarInjectionChecks == 6, "LLInt assumes ClosureVarWithVarInjectionChecks ResultType is == 6");
+    static_assert(Dynamic == 7, "LLInt assumes Dynamic ResultType is == 7");
+    
+    ASSERT(ResolveModeAndType::mask == 0xffff);
+
+    ASSERT(MarkedBlock::blockMask == ~static_cast<decltype(MarkedBlock::blockMask)>(0x3fff));
+
+    // FIXME: make these assertions less horrible.
+#if !ASSERT_DISABLED
+    Vector<int> testVector;
+    testVector.resize(42);
+    ASSERT(bitwise_cast<uint32_t*>(&testVector)[sizeof(void*)/sizeof(uint32_t) + 1] == 42);
+    ASSERT(bitwise_cast<int**>(&testVector)[0] == testVector.begin());
+#endif
+
+    ASSERT(StringImpl::s_hashFlag8BitBuffer == 8);
+}
+#if COMPILER(CLANG)
+#pragma clang diagnostic pop
+#endif
+
+} } // namespace JSC::LLInt