Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3

* changes:
  Merge WebKit at r75315: Update WebKit version
  Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs
  Merge WebKit at r75315: Stub out AXObjectCache::remove()
  Merge WebKit at r75315: Fix ImageBuffer
  Merge WebKit at r75315: Fix PluginData::initPlugins()
  Merge WebKit at r75315: Fix conflicts
  Merge WebKit at r75315: Fix Makefiles
  Merge WebKit at r75315: Move Android-specific WebCore files to Source
  Merge WebKit at r75315: Initial merge by git.

1 files changed, 670 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/jit/JIT.cpp b/Source/JavaScriptCore/jit/JIT.cpp
new file mode 100644
index 0000000..01401a7
--- /dev/null
+++ b/Source/JavaScriptCore/jit/JIT.cpp
@@ -0,0 +1,670 @@
+/*
+ * Copyright (C) 2008, 2009 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"
+
+#if ENABLE(JIT)
+#include "JIT.h"
+
+// This probably does not belong here; adding here for now as a quick Windows build fix.
+#if ENABLE(ASSEMBLER) && CPU(X86) && !OS(MAC_OS_X)
+#include "MacroAssembler.h"
+JSC::MacroAssemblerX86Common::SSE2CheckState JSC::MacroAssemblerX86Common::s_sse2CheckState = NotCheckedSSE2;
+#endif
+
+#include "CodeBlock.h"
+#include "Interpreter.h"
+#include "JITInlineMethods.h"
+#include "JITStubCall.h"
+#include "JSArray.h"
+#include "JSFunction.h"
+#include "LinkBuffer.h"
+#include "RepatchBuffer.h"
+#include "ResultType.h"
+#include "SamplingTool.h"
+
+#ifndef NDEBUG
+#include <stdio.h>
+#endif
+
+using namespace std;
+
+namespace JSC {
+
+void ctiPatchNearCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction)
+{
+    RepatchBuffer repatchBuffer(codeblock);
+    repatchBuffer.relinkNearCallerToTrampoline(returnAddress, newCalleeFunction);
+}
+
+void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, MacroAssemblerCodePtr newCalleeFunction)
+{
+    RepatchBuffer repatchBuffer(codeblock);
+    repatchBuffer.relinkCallerToTrampoline(returnAddress, newCalleeFunction);
+}
+
+void ctiPatchCallByReturnAddress(CodeBlock* codeblock, ReturnAddressPtr returnAddress, FunctionPtr newCalleeFunction)
+{
+    RepatchBuffer repatchBuffer(codeblock);
+    repatchBuffer.relinkCallerToFunction(returnAddress, newCalleeFunction);
+}
+
+JIT::JIT(JSGlobalData* globalData, CodeBlock* codeBlock, void* linkerOffset)
+    : m_interpreter(globalData->interpreter)
+    , m_globalData(globalData)
+    , m_codeBlock(codeBlock)
+    , m_labels(codeBlock ? codeBlock->instructions().size() : 0)
+    , m_propertyAccessCompilationInfo(codeBlock ? codeBlock->numberOfStructureStubInfos() : 0)
+    , m_callStructureStubCompilationInfo(codeBlock ? codeBlock->numberOfCallLinkInfos() : 0)
+    , m_bytecodeOffset((unsigned)-1)
+#if USE(JSVALUE32_64)
+    , m_jumpTargetIndex(0)
+    , m_mappedBytecodeOffset((unsigned)-1)
+    , m_mappedVirtualRegisterIndex((unsigned)-1)
+    , m_mappedTag((RegisterID)-1)
+    , m_mappedPayload((RegisterID)-1)
+#else
+    , m_lastResultBytecodeRegister(std::numeric_limits<int>::max())
+    , m_jumpTargetsPosition(0)
+#endif
+    , m_linkerOffset(linkerOffset)
+{
+}
+
+#if USE(JSVALUE32_64)
+void JIT::emitTimeoutCheck()
+{
+    Jump skipTimeout = branchSub32(NonZero, Imm32(1), timeoutCheckRegister);
+    JITStubCall stubCall(this, cti_timeout_check);
+    stubCall.addArgument(regT1, regT0); // save last result registers.
+    stubCall.call(timeoutCheckRegister);
+    stubCall.getArgument(0, regT1, regT0); // reload last result registers.
+    skipTimeout.link(this);
+}
+#else
+void JIT::emitTimeoutCheck()
+{
+    Jump skipTimeout = branchSub32(NonZero, Imm32(1), timeoutCheckRegister);
+    JITStubCall(this, cti_timeout_check).call(timeoutCheckRegister);
+    skipTimeout.link(this);
+
+    killLastResultRegister();
+}
+#endif
+
+#define NEXT_OPCODE(name) \
+    m_bytecodeOffset += OPCODE_LENGTH(name); \
+    break;
+
+#if USE(JSVALUE32_64)
+#define DEFINE_BINARY_OP(name) \
+    case name: { \
+        JITStubCall stubCall(this, cti_##name); \
+        stubCall.addArgument(currentInstruction[2].u.operand); \
+        stubCall.addArgument(currentInstruction[3].u.operand); \
+        stubCall.call(currentInstruction[1].u.operand); \
+        NEXT_OPCODE(name); \
+    }
+
+#define DEFINE_UNARY_OP(name) \
+    case name: { \
+        JITStubCall stubCall(this, cti_##name); \
+        stubCall.addArgument(currentInstruction[2].u.operand); \
+        stubCall.call(currentInstruction[1].u.operand); \
+        NEXT_OPCODE(name); \
+    }
+
+#else // USE(JSVALUE32_64)
+
+#define DEFINE_BINARY_OP(name) \
+    case name: { \
+        JITStubCall stubCall(this, cti_##name); \
+        stubCall.addArgument(currentInstruction[2].u.operand, regT2); \
+        stubCall.addArgument(currentInstruction[3].u.operand, regT2); \
+        stubCall.call(currentInstruction[1].u.operand); \
+        NEXT_OPCODE(name); \
+    }
+
+#define DEFINE_UNARY_OP(name) \
+    case name: { \
+        JITStubCall stubCall(this, cti_##name); \
+        stubCall.addArgument(currentInstruction[2].u.operand, regT2); \
+        stubCall.call(currentInstruction[1].u.operand); \
+        NEXT_OPCODE(name); \
+    }
+#endif // USE(JSVALUE32_64)
+
+#define DEFINE_OP(name) \
+    case name: { \
+        emit_##name(currentInstruction); \
+        NEXT_OPCODE(name); \
+    }
+
+#define DEFINE_SLOWCASE_OP(name) \
+    case name: { \
+        emitSlow_##name(currentInstruction, iter); \
+        NEXT_OPCODE(name); \
+    }
+
+void JIT::privateCompileMainPass()
+{
+    Instruction* instructionsBegin = m_codeBlock->instructions().begin();
+    unsigned instructionCount = m_codeBlock->instructions().size();
+
+    m_propertyAccessInstructionIndex = 0;
+    m_globalResolveInfoIndex = 0;
+    m_callLinkInfoIndex = 0;
+
+    for (m_bytecodeOffset = 0; m_bytecodeOffset < instructionCount; ) {
+        Instruction* currentInstruction = instructionsBegin + m_bytecodeOffset;
+        ASSERT_WITH_MESSAGE(m_interpreter->isOpcode(currentInstruction->u.opcode), "privateCompileMainPass gone bad @ %d", m_bytecodeOffset);
+
+#if ENABLE(OPCODE_SAMPLING)
+        if (m_bytecodeOffset > 0) // Avoid the overhead of sampling op_enter twice.
+            sampleInstruction(currentInstruction);
+#endif
+
+#if USE(JSVALUE64)
+        if (m_labels[m_bytecodeOffset].isUsed())
+            killLastResultRegister();
+#endif
+
+        m_labels[m_bytecodeOffset] = label();
+
+        switch (m_interpreter->getOpcodeID(currentInstruction->u.opcode)) {
+        DEFINE_BINARY_OP(op_del_by_val)
+        DEFINE_BINARY_OP(op_in)
+        DEFINE_BINARY_OP(op_less)
+        DEFINE_BINARY_OP(op_lesseq)
+        DEFINE_UNARY_OP(op_is_boolean)
+        DEFINE_UNARY_OP(op_is_function)
+        DEFINE_UNARY_OP(op_is_number)
+        DEFINE_UNARY_OP(op_is_object)
+        DEFINE_UNARY_OP(op_is_string)
+        DEFINE_UNARY_OP(op_is_undefined)
+#if USE(JSVALUE64)
+        DEFINE_UNARY_OP(op_negate)
+#endif
+        DEFINE_UNARY_OP(op_typeof)
+
+        DEFINE_OP(op_add)
+        DEFINE_OP(op_bitand)
+        DEFINE_OP(op_bitnot)
+        DEFINE_OP(op_bitor)
+        DEFINE_OP(op_bitxor)
+        DEFINE_OP(op_call)
+        DEFINE_OP(op_call_eval)
+        DEFINE_OP(op_call_varargs)
+        DEFINE_OP(op_catch)
+        DEFINE_OP(op_construct)
+        DEFINE_OP(op_get_callee)
+        DEFINE_OP(op_create_this)
+        DEFINE_OP(op_convert_this)
+        DEFINE_OP(op_convert_this_strict)
+        DEFINE_OP(op_init_lazy_reg)
+        DEFINE_OP(op_create_arguments)
+        DEFINE_OP(op_debug)
+        DEFINE_OP(op_del_by_id)
+        DEFINE_OP(op_div)
+        DEFINE_OP(op_end)
+        DEFINE_OP(op_enter)
+        DEFINE_OP(op_create_activation)
+        DEFINE_OP(op_eq)
+        DEFINE_OP(op_eq_null)
+        DEFINE_OP(op_get_by_id)
+        DEFINE_OP(op_get_arguments_length)
+        DEFINE_OP(op_get_by_val)
+        DEFINE_OP(op_get_argument_by_val)
+        DEFINE_OP(op_get_by_pname)
+        DEFINE_OP(op_get_global_var)
+        DEFINE_OP(op_get_pnames)
+        DEFINE_OP(op_get_scoped_var)
+        DEFINE_OP(op_check_has_instance)
+        DEFINE_OP(op_instanceof)
+        DEFINE_OP(op_jeq_null)
+        DEFINE_OP(op_jfalse)
+        DEFINE_OP(op_jmp)
+        DEFINE_OP(op_jmp_scopes)
+        DEFINE_OP(op_jneq_null)
+        DEFINE_OP(op_jneq_ptr)
+        DEFINE_OP(op_jnless)
+        DEFINE_OP(op_jless)
+        DEFINE_OP(op_jlesseq)
+        DEFINE_OP(op_jnlesseq)
+        DEFINE_OP(op_jsr)
+        DEFINE_OP(op_jtrue)
+        DEFINE_OP(op_load_varargs)
+        DEFINE_OP(op_loop)
+        DEFINE_OP(op_loop_if_less)
+        DEFINE_OP(op_loop_if_lesseq)
+        DEFINE_OP(op_loop_if_true)
+        DEFINE_OP(op_loop_if_false)
+        DEFINE_OP(op_lshift)
+        DEFINE_OP(op_method_check)
+        DEFINE_OP(op_mod)
+        DEFINE_OP(op_mov)
+        DEFINE_OP(op_mul)
+#if USE(JSVALUE32_64)
+        DEFINE_OP(op_negate)
+#endif
+        DEFINE_OP(op_neq)
+        DEFINE_OP(op_neq_null)
+        DEFINE_OP(op_new_array)
+        DEFINE_OP(op_new_func)
+        DEFINE_OP(op_new_func_exp)
+        DEFINE_OP(op_new_object)
+        DEFINE_OP(op_new_regexp)
+        DEFINE_OP(op_next_pname)
+        DEFINE_OP(op_not)
+        DEFINE_OP(op_nstricteq)
+        DEFINE_OP(op_pop_scope)
+        DEFINE_OP(op_post_dec)
+        DEFINE_OP(op_post_inc)
+        DEFINE_OP(op_pre_dec)
+        DEFINE_OP(op_pre_inc)
+        DEFINE_OP(op_profile_did_call)
+        DEFINE_OP(op_profile_will_call)
+        DEFINE_OP(op_push_new_scope)
+        DEFINE_OP(op_push_scope)
+        DEFINE_OP(op_put_by_id)
+        DEFINE_OP(op_put_by_index)
+        DEFINE_OP(op_put_by_val)
+        DEFINE_OP(op_put_getter)
+        DEFINE_OP(op_put_global_var)
+        DEFINE_OP(op_put_scoped_var)
+        DEFINE_OP(op_put_setter)
+        DEFINE_OP(op_resolve)
+        DEFINE_OP(op_resolve_base)
+        DEFINE_OP(op_ensure_property_exists)
+        DEFINE_OP(op_resolve_global)
+        DEFINE_OP(op_resolve_global_dynamic)
+        DEFINE_OP(op_resolve_skip)
+        DEFINE_OP(op_resolve_with_base)
+        DEFINE_OP(op_ret)
+        DEFINE_OP(op_call_put_result)
+        DEFINE_OP(op_ret_object_or_this)
+        DEFINE_OP(op_rshift)
+        DEFINE_OP(op_urshift)
+        DEFINE_OP(op_sret)
+        DEFINE_OP(op_strcat)
+        DEFINE_OP(op_stricteq)
+        DEFINE_OP(op_sub)
+        DEFINE_OP(op_switch_char)
+        DEFINE_OP(op_switch_imm)
+        DEFINE_OP(op_switch_string)
+        DEFINE_OP(op_tear_off_activation)
+        DEFINE_OP(op_tear_off_arguments)
+        DEFINE_OP(op_throw)
+        DEFINE_OP(op_throw_reference_error)
+        DEFINE_OP(op_throw_syntax_error)
+        DEFINE_OP(op_to_jsnumber)
+        DEFINE_OP(op_to_primitive)
+
+        case op_get_array_length:
+        case op_get_by_id_chain:
+        case op_get_by_id_generic:
+        case op_get_by_id_proto:
+        case op_get_by_id_proto_list:
+        case op_get_by_id_self:
+        case op_get_by_id_self_list:
+        case op_get_by_id_getter_chain:
+        case op_get_by_id_getter_proto:
+        case op_get_by_id_getter_proto_list:
+        case op_get_by_id_getter_self:
+        case op_get_by_id_getter_self_list:
+        case op_get_by_id_custom_chain:
+        case op_get_by_id_custom_proto:
+        case op_get_by_id_custom_proto_list:
+        case op_get_by_id_custom_self:
+        case op_get_by_id_custom_self_list:
+        case op_get_string_length:
+        case op_put_by_id_generic:
+        case op_put_by_id_replace:
+        case op_put_by_id_transition:
+            ASSERT_NOT_REACHED();
+        }
+    }
+
+    ASSERT(m_propertyAccessInstructionIndex == m_codeBlock->numberOfStructureStubInfos());
+    ASSERT(m_callLinkInfoIndex == m_codeBlock->numberOfCallLinkInfos());
+
+#ifndef NDEBUG
+    // Reset this, in order to guard its use with ASSERTs.
+    m_bytecodeOffset = (unsigned)-1;
+#endif
+}
+
+
+void JIT::privateCompileLinkPass()
+{
+    unsigned jmpTableCount = m_jmpTable.size();
+    for (unsigned i = 0; i < jmpTableCount; ++i)
+        m_jmpTable[i].from.linkTo(m_labels[m_jmpTable[i].toBytecodeOffset], this);
+    m_jmpTable.clear();
+}
+
+void JIT::privateCompileSlowCases()
+{
+    Instruction* instructionsBegin = m_codeBlock->instructions().begin();
+
+    m_propertyAccessInstructionIndex = 0;
+    m_globalResolveInfoIndex = 0;
+    m_callLinkInfoIndex = 0;
+
+    for (Vector<SlowCaseEntry>::iterator iter = m_slowCases.begin(); iter != m_slowCases.end();) {
+#if USE(JSVALUE64)
+        killLastResultRegister();
+#endif
+
+        m_bytecodeOffset = iter->to;
+#ifndef NDEBUG
+        unsigned firstTo = m_bytecodeOffset;
+#endif
+        Instruction* currentInstruction = instructionsBegin + m_bytecodeOffset;
+
+        switch (m_interpreter->getOpcodeID(currentInstruction->u.opcode)) {
+        DEFINE_SLOWCASE_OP(op_add)
+        DEFINE_SLOWCASE_OP(op_bitand)
+        DEFINE_SLOWCASE_OP(op_bitnot)
+        DEFINE_SLOWCASE_OP(op_bitor)
+        DEFINE_SLOWCASE_OP(op_bitxor)
+        DEFINE_SLOWCASE_OP(op_call)
+        DEFINE_SLOWCASE_OP(op_call_eval)
+        DEFINE_SLOWCASE_OP(op_call_varargs)
+        DEFINE_SLOWCASE_OP(op_construct)
+        DEFINE_SLOWCASE_OP(op_convert_this)
+        DEFINE_SLOWCASE_OP(op_convert_this_strict)
+        DEFINE_SLOWCASE_OP(op_div)
+        DEFINE_SLOWCASE_OP(op_eq)
+        DEFINE_SLOWCASE_OP(op_get_by_id)
+        DEFINE_SLOWCASE_OP(op_get_arguments_length)
+        DEFINE_SLOWCASE_OP(op_get_by_val)
+        DEFINE_SLOWCASE_OP(op_get_argument_by_val)
+        DEFINE_SLOWCASE_OP(op_get_by_pname)
+        DEFINE_SLOWCASE_OP(op_check_has_instance)
+        DEFINE_SLOWCASE_OP(op_instanceof)
+        DEFINE_SLOWCASE_OP(op_jfalse)
+        DEFINE_SLOWCASE_OP(op_jnless)
+        DEFINE_SLOWCASE_OP(op_jless)
+        DEFINE_SLOWCASE_OP(op_jlesseq)
+        DEFINE_SLOWCASE_OP(op_jnlesseq)
+        DEFINE_SLOWCASE_OP(op_jtrue)
+        DEFINE_SLOWCASE_OP(op_load_varargs)
+        DEFINE_SLOWCASE_OP(op_loop_if_less)
+        DEFINE_SLOWCASE_OP(op_loop_if_lesseq)
+        DEFINE_SLOWCASE_OP(op_loop_if_true)
+        DEFINE_SLOWCASE_OP(op_loop_if_false)
+        DEFINE_SLOWCASE_OP(op_lshift)
+        DEFINE_SLOWCASE_OP(op_method_check)
+        DEFINE_SLOWCASE_OP(op_mod)
+        DEFINE_SLOWCASE_OP(op_mul)
+#if USE(JSVALUE32_64)
+        DEFINE_SLOWCASE_OP(op_negate)
+#endif
+        DEFINE_SLOWCASE_OP(op_neq)
+        DEFINE_SLOWCASE_OP(op_not)
+        DEFINE_SLOWCASE_OP(op_nstricteq)
+        DEFINE_SLOWCASE_OP(op_post_dec)
+        DEFINE_SLOWCASE_OP(op_post_inc)
+        DEFINE_SLOWCASE_OP(op_pre_dec)
+        DEFINE_SLOWCASE_OP(op_pre_inc)
+        DEFINE_SLOWCASE_OP(op_put_by_id)
+        DEFINE_SLOWCASE_OP(op_put_by_val)
+        DEFINE_SLOWCASE_OP(op_resolve_global)
+        DEFINE_SLOWCASE_OP(op_resolve_global_dynamic)
+        DEFINE_SLOWCASE_OP(op_rshift)
+        DEFINE_SLOWCASE_OP(op_urshift)
+        DEFINE_SLOWCASE_OP(op_stricteq)
+        DEFINE_SLOWCASE_OP(op_sub)
+        DEFINE_SLOWCASE_OP(op_to_jsnumber)
+        DEFINE_SLOWCASE_OP(op_to_primitive)
+        default:
+            ASSERT_NOT_REACHED();
+        }
+
+        ASSERT_WITH_MESSAGE(iter == m_slowCases.end() || firstTo != iter->to,"Not enough jumps linked in slow case codegen.");
+        ASSERT_WITH_MESSAGE(firstTo == (iter - 1)->to, "Too many jumps linked in slow case codegen.");
+
+        emitJumpSlowToHot(jump(), 0);
+    }
+
+#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
+    ASSERT(m_propertyAccessInstructionIndex == m_codeBlock->numberOfStructureStubInfos());
+#endif
+    ASSERT(m_callLinkInfoIndex == m_codeBlock->numberOfCallLinkInfos());
+
+#ifndef NDEBUG
+    // Reset this, in order to guard its use with ASSERTs.
+    m_bytecodeOffset = (unsigned)-1;
+#endif
+}
+
+JITCode JIT::privateCompile(CodePtr* functionEntryArityCheck)
+{
+    // Could use a pop_m, but would need to offset the following instruction if so.
+    preserveReturnAddressAfterCall(regT2);
+    emitPutToCallFrameHeader(regT2, RegisterFile::ReturnPC);
+
+    Label beginLabel(this);
+
+    sampleCodeBlock(m_codeBlock);
+#if ENABLE(OPCODE_SAMPLING)
+    sampleInstruction(m_codeBlock->instructions().begin());
+#endif
+
+    Jump registerFileCheck;
+    if (m_codeBlock->codeType() == FunctionCode) {
+        // In the case of a fast linked call, we do not set this up in the caller.
+        emitPutImmediateToCallFrameHeader(m_codeBlock, RegisterFile::CodeBlock);
+
+        addPtr(Imm32(m_codeBlock->m_numCalleeRegisters * sizeof(Register)), callFrameRegister, regT1);
+        registerFileCheck = branchPtr(Below, AbsoluteAddress(&m_globalData->interpreter->registerFile().m_end), regT1);
+    }
+
+    Label functionBody = label();
+
+    privateCompileMainPass();
+    privateCompileLinkPass();
+    privateCompileSlowCases();
+
+    Label arityCheck;
+    Call callArityCheck;
+    if (m_codeBlock->codeType() == FunctionCode) {
+        registerFileCheck.link(this);
+        m_bytecodeOffset = 0;
+        JITStubCall(this, cti_register_file_check).call();
+#ifndef NDEBUG
+        m_bytecodeOffset = (unsigned)-1; // Reset this, in order to guard its use with ASSERTs.
+#endif
+        jump(functionBody);
+
+        arityCheck = label();
+        preserveReturnAddressAfterCall(regT2);
+        emitPutToCallFrameHeader(regT2, RegisterFile::ReturnPC);
+        branch32(Equal, regT1, Imm32(m_codeBlock->m_numParameters)).linkTo(beginLabel, this);
+        restoreArgumentReference();
+        callArityCheck = call();
+        move(regT0, callFrameRegister);
+        jump(beginLabel);
+    }
+
+    ASSERT(m_jmpTable.isEmpty());
+
+    LinkBuffer patchBuffer(this, m_globalData->executableAllocator.poolForSize(m_assembler.size()), m_linkerOffset);
+
+    // Translate vPC offsets into addresses in JIT generated code, for switch tables.
+    for (unsigned i = 0; i < m_switches.size(); ++i) {
+        SwitchRecord record = m_switches[i];
+        unsigned bytecodeOffset = record.bytecodeOffset;
+
+        if (record.type != SwitchRecord::String) {
+            ASSERT(record.type == SwitchRecord::Immediate || record.type == SwitchRecord::Character); 
+            ASSERT(record.jumpTable.simpleJumpTable->branchOffsets.size() == record.jumpTable.simpleJumpTable->ctiOffsets.size());
+
+            record.jumpTable.simpleJumpTable->ctiDefault = patchBuffer.locationOf(m_labels[bytecodeOffset + record.defaultOffset]);
+
+            for (unsigned j = 0; j < record.jumpTable.simpleJumpTable->branchOffsets.size(); ++j) {
+                unsigned offset = record.jumpTable.simpleJumpTable->branchOffsets[j];
+                record.jumpTable.simpleJumpTable->ctiOffsets[j] = offset ? patchBuffer.locationOf(m_labels[bytecodeOffset + offset]) : record.jumpTable.simpleJumpTable->ctiDefault;
+            }
+        } else {
+            ASSERT(record.type == SwitchRecord::String);
+
+            record.jumpTable.stringJumpTable->ctiDefault = patchBuffer.locationOf(m_labels[bytecodeOffset + record.defaultOffset]);
+
+            StringJumpTable::StringOffsetTable::iterator end = record.jumpTable.stringJumpTable->offsetTable.end();            
+            for (StringJumpTable::StringOffsetTable::iterator it = record.jumpTable.stringJumpTable->offsetTable.begin(); it != end; ++it) {
+                unsigned offset = it->second.branchOffset;
+                it->second.ctiOffset = offset ? patchBuffer.locationOf(m_labels[bytecodeOffset + offset]) : record.jumpTable.stringJumpTable->ctiDefault;
+            }
+        }
+    }
+
+    for (size_t i = 0; i < m_codeBlock->numberOfExceptionHandlers(); ++i) {
+        HandlerInfo& handler = m_codeBlock->exceptionHandler(i);
+        handler.nativeCode = patchBuffer.locationOf(m_labels[handler.target]);
+    }
+
+    for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter) {
+        if (iter->to)
+            patchBuffer.link(iter->from, FunctionPtr(iter->to));
+    }
+
+    if (m_codeBlock->needsCallReturnIndices()) {
+        m_codeBlock->callReturnIndexVector().reserveCapacity(m_calls.size());
+        for (Vector<CallRecord>::iterator iter = m_calls.begin(); iter != m_calls.end(); ++iter)
+            m_codeBlock->callReturnIndexVector().append(CallReturnOffsetToBytecodeOffset(patchBuffer.returnAddressOffset(iter->from), iter->bytecodeOffset));
+    }
+
+    // Link absolute addresses for jsr
+    for (Vector<JSRInfo>::iterator iter = m_jsrSites.begin(); iter != m_jsrSites.end(); ++iter)
+        patchBuffer.patch(iter->storeLocation, patchBuffer.locationOf(iter->target).executableAddress());
+
+#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
+    for (unsigned i = 0; i < m_codeBlock->numberOfStructureStubInfos(); ++i) {
+        StructureStubInfo& info = m_codeBlock->structureStubInfo(i);
+        info.callReturnLocation = patchBuffer.locationOf(m_propertyAccessCompilationInfo[i].callReturnLocation);
+        info.hotPathBegin = patchBuffer.locationOf(m_propertyAccessCompilationInfo[i].hotPathBegin);
+    }
+#endif
+#if ENABLE(JIT_OPTIMIZE_CALL)
+    for (unsigned i = 0; i < m_codeBlock->numberOfCallLinkInfos(); ++i) {
+        CallLinkInfo& info = m_codeBlock->callLinkInfo(i);
+        info.ownerCodeBlock = m_codeBlock;
+        info.callReturnLocation = patchBuffer.locationOfNearCall(m_callStructureStubCompilationInfo[i].callReturnLocation);
+        info.hotPathBegin = patchBuffer.locationOf(m_callStructureStubCompilationInfo[i].hotPathBegin);
+        info.hotPathOther = patchBuffer.locationOfNearCall(m_callStructureStubCompilationInfo[i].hotPathOther);
+    }
+#endif
+    unsigned methodCallCount = m_methodCallCompilationInfo.size();
+    m_codeBlock->addMethodCallLinkInfos(methodCallCount);
+    for (unsigned i = 0; i < methodCallCount; ++i) {
+        MethodCallLinkInfo& info = m_codeBlock->methodCallLinkInfo(i);
+        info.structureLabel = patchBuffer.locationOf(m_methodCallCompilationInfo[i].structureToCompare);
+        info.callReturnLocation = m_codeBlock->structureStubInfo(m_methodCallCompilationInfo[i].propertyAccessIndex).callReturnLocation;
+    }
+
+    if (m_codeBlock->codeType() == FunctionCode && functionEntryArityCheck) {
+        patchBuffer.link(callArityCheck, FunctionPtr(m_codeBlock->m_isConstructor ? cti_op_construct_arityCheck : cti_op_call_arityCheck));
+        *functionEntryArityCheck = patchBuffer.locationOf(arityCheck);
+    }
+
+    return patchBuffer.finalizeCode();
+}
+
+#if USE(JSVALUE64)
+void JIT::emitGetVariableObjectRegister(RegisterID variableObject, int index, RegisterID dst)
+{
+    loadPtr(Address(variableObject, OBJECT_OFFSETOF(JSVariableObject, d)), dst);
+    loadPtr(Address(dst, OBJECT_OFFSETOF(JSVariableObject::JSVariableObjectData, registers)), dst);
+    loadPtr(Address(dst, index * sizeof(Register)), dst);
+}
+
+void JIT::emitPutVariableObjectRegister(RegisterID src, RegisterID variableObject, int index)
+{
+    loadPtr(Address(variableObject, OBJECT_OFFSETOF(JSVariableObject, d)), variableObject);
+    loadPtr(Address(variableObject, OBJECT_OFFSETOF(JSVariableObject::JSVariableObjectData, registers)), variableObject);
+    storePtr(src, Address(variableObject, index * sizeof(Register)));
+}
+#endif
+
+#if ENABLE(JIT_OPTIMIZE_CALL)
+void JIT::unlinkCallOrConstruct(CallLinkInfo* callLinkInfo)
+{
+    // When the JSFunction is deleted the pointer embedded in the instruction stream will no longer be valid
+    // (and, if a new JSFunction happened to be constructed at the same location, we could get a false positive
+    // match).  Reset the check so it no longer matches.
+    RepatchBuffer repatchBuffer(callLinkInfo->ownerCodeBlock);
+#if USE(JSVALUE32_64)
+    repatchBuffer.repatch(callLinkInfo->hotPathBegin, 0);
+#else
+    repatchBuffer.repatch(callLinkInfo->hotPathBegin, JSValue::encode(JSValue()));
+#endif
+}
+
+void JIT::linkCall(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JIT::CodePtr code, CallLinkInfo* callLinkInfo, int callerArgCount, JSGlobalData* globalData)
+{
+    RepatchBuffer repatchBuffer(callerCodeBlock);
+
+    // Currently we only link calls with the exact number of arguments.
+    // If this is a native call calleeCodeBlock is null so the number of parameters is unimportant
+    if (!calleeCodeBlock || (callerArgCount == calleeCodeBlock->m_numParameters)) {
+        ASSERT(!callLinkInfo->isLinked());
+    
+        if (calleeCodeBlock)
+            calleeCodeBlock->addCaller(callLinkInfo);
+    
+        repatchBuffer.repatch(callLinkInfo->hotPathBegin, callee);
+        repatchBuffer.relink(callLinkInfo->hotPathOther, code);
+    }
+
+    // patch the call so we do not continue to try to link.
+    repatchBuffer.relink(callLinkInfo->callReturnLocation, globalData->jitStubs->ctiVirtualCall());
+}
+
+void JIT::linkConstruct(JSFunction* callee, CodeBlock* callerCodeBlock, CodeBlock* calleeCodeBlock, JIT::CodePtr code, CallLinkInfo* callLinkInfo, int callerArgCount, JSGlobalData* globalData)
+{
+    RepatchBuffer repatchBuffer(callerCodeBlock);
+
+    // Currently we only link calls with the exact number of arguments.
+    // If this is a native call calleeCodeBlock is null so the number of parameters is unimportant
+    if (!calleeCodeBlock || (callerArgCount == calleeCodeBlock->m_numParameters)) {
+        ASSERT(!callLinkInfo->isLinked());
+    
+        if (calleeCodeBlock)
+            calleeCodeBlock->addCaller(callLinkInfo);
+    
+        repatchBuffer.repatch(callLinkInfo->hotPathBegin, callee);
+        repatchBuffer.relink(callLinkInfo->hotPathOther, code);
+    }
+
+    // patch the call so we do not continue to try to link.
+    repatchBuffer.relink(callLinkInfo->callReturnLocation, globalData->jitStubs->ctiVirtualConstruct());
+}
+#endif // ENABLE(JIT_OPTIMIZE_CALL)
+
+} // namespace JSC
+
+#endif // ENABLE(JIT)