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authorSteve Block <steveblock@google.com>2011-05-06 11:45:16 +0100
committerSteve Block <steveblock@google.com>2011-05-12 13:44:10 +0100
commitcad810f21b803229eb11403f9209855525a25d57 (patch)
tree29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /JavaScriptCore/jit/JITInlineMethods.h
parent121b0cf4517156d0ac5111caf9830c51b69bae8f (diff)
downloadexternal_webkit-cad810f21b803229eb11403f9209855525a25d57.zip
external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz
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Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'JavaScriptCore/jit/JITInlineMethods.h')
-rw-r--r--JavaScriptCore/jit/JITInlineMethods.h809
1 files changed, 0 insertions, 809 deletions
diff --git a/JavaScriptCore/jit/JITInlineMethods.h b/JavaScriptCore/jit/JITInlineMethods.h
deleted file mode 100644
index 39ca4a5..0000000
--- a/JavaScriptCore/jit/JITInlineMethods.h
+++ /dev/null
@@ -1,809 +0,0 @@
-/*
- * Copyright (C) 2008 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.
- */
-
-#ifndef JITInlineMethods_h
-#define JITInlineMethods_h
-
-
-#if ENABLE(JIT)
-
-namespace JSC {
-
-/* Deprecated: Please use JITStubCall instead. */
-
-ALWAYS_INLINE void JIT::emitGetJITStubArg(unsigned argumentNumber, RegisterID dst)
-{
- unsigned argumentStackOffset = (argumentNumber * (sizeof(JSValue) / sizeof(void*))) + JITSTACKFRAME_ARGS_INDEX;
- peek(dst, argumentStackOffset);
-}
-
-ALWAYS_INLINE bool JIT::isOperandConstantImmediateDouble(unsigned src)
-{
- return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isDouble();
-}
-
-ALWAYS_INLINE JSValue JIT::getConstantOperand(unsigned src)
-{
- ASSERT(m_codeBlock->isConstantRegisterIndex(src));
- return m_codeBlock->getConstant(src);
-}
-
-ALWAYS_INLINE void JIT::emitPutToCallFrameHeader(RegisterID from, RegisterFile::CallFrameHeaderEntry entry)
-{
- storePtr(from, Address(callFrameRegister, entry * sizeof(Register)));
-}
-
-ALWAYS_INLINE void JIT::emitPutImmediateToCallFrameHeader(void* value, RegisterFile::CallFrameHeaderEntry entry)
-{
- storePtr(ImmPtr(value), Address(callFrameRegister, entry * sizeof(Register)));
-}
-
-ALWAYS_INLINE void JIT::emitGetFromCallFrameHeaderPtr(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from)
-{
- loadPtr(Address(from, entry * sizeof(Register)), to);
-#if USE(JSVALUE64)
- killLastResultRegister();
-#endif
-}
-
-ALWAYS_INLINE void JIT::emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures)
-{
- failures.append(branchPtr(NotEqual, Address(src), ImmPtr(m_globalData->jsStringVPtr)));
- failures.append(branchTest32(NonZero, Address(src, OBJECT_OFFSETOF(JSString, m_fiberCount))));
- failures.append(branch32(NotEqual, MacroAssembler::Address(src, ThunkHelpers::jsStringLengthOffset()), Imm32(1)));
- loadPtr(MacroAssembler::Address(src, ThunkHelpers::jsStringValueOffset()), dst);
- loadPtr(MacroAssembler::Address(dst, ThunkHelpers::stringImplDataOffset()), dst);
- load16(MacroAssembler::Address(dst, 0), dst);
-}
-
-ALWAYS_INLINE void JIT::emitGetFromCallFrameHeader32(RegisterFile::CallFrameHeaderEntry entry, RegisterID to, RegisterID from)
-{
- load32(Address(from, entry * sizeof(Register)), to);
-#if USE(JSVALUE64)
- killLastResultRegister();
-#endif
-}
-
-ALWAYS_INLINE JIT::Call JIT::emitNakedCall(CodePtr function)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- Call nakedCall = nearCall();
- m_calls.append(CallRecord(nakedCall, m_bytecodeOffset, function.executableAddress()));
- return nakedCall;
-}
-
-#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL
-
-ALWAYS_INLINE void JIT::beginUninterruptedSequence(int insnSpace, int constSpace)
-{
- JSInterfaceJIT::beginUninterruptedSequence();
-#if CPU(ARM_TRADITIONAL)
-#ifndef NDEBUG
- // Ensure the label after the sequence can also fit
- insnSpace += sizeof(ARMWord);
- constSpace += sizeof(uint64_t);
-#endif
-
- ensureSpace(insnSpace, constSpace);
-
-#endif
-
-#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL
-#ifndef NDEBUG
- m_uninterruptedInstructionSequenceBegin = label();
- m_uninterruptedConstantSequenceBegin = sizeOfConstantPool();
-#endif
-#endif
-}
-
-ALWAYS_INLINE void JIT::endUninterruptedSequence(int insnSpace, int constSpace)
-{
-#if defined(ASSEMBLER_HAS_CONSTANT_POOL) && ASSEMBLER_HAS_CONSTANT_POOL
- /* There are several cases when the uninterrupted sequence is larger than
- * maximum required offset for pathing the same sequence. Eg.: if in a
- * uninterrupted sequence the last macroassembler's instruction is a stub
- * call, it emits store instruction(s) which should not be included in the
- * calculation of length of uninterrupted sequence. So, the insnSpace and
- * constSpace should be upper limit instead of hard limit.
- */
- ASSERT(differenceBetween(m_uninterruptedInstructionSequenceBegin, label()) <= insnSpace);
- ASSERT(sizeOfConstantPool() - m_uninterruptedConstantSequenceBegin <= constSpace);
-#endif
- JSInterfaceJIT::endUninterruptedSequence();
-}
-
-#endif
-
-#if CPU(ARM)
-
-ALWAYS_INLINE void JIT::preserveReturnAddressAfterCall(RegisterID reg)
-{
- move(linkRegister, reg);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(RegisterID reg)
-{
- move(reg, linkRegister);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(Address address)
-{
- loadPtr(address, linkRegister);
-}
-
-#elif CPU(MIPS)
-
-ALWAYS_INLINE void JIT::preserveReturnAddressAfterCall(RegisterID reg)
-{
- move(returnAddressRegister, reg);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(RegisterID reg)
-{
- move(reg, returnAddressRegister);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(Address address)
-{
- loadPtr(address, returnAddressRegister);
-}
-
-#else // CPU(X86) || CPU(X86_64)
-
-ALWAYS_INLINE void JIT::preserveReturnAddressAfterCall(RegisterID reg)
-{
- pop(reg);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(RegisterID reg)
-{
- push(reg);
-}
-
-ALWAYS_INLINE void JIT::restoreReturnAddressBeforeReturn(Address address)
-{
- push(address);
-}
-
-#endif
-
-ALWAYS_INLINE void JIT::restoreArgumentReference()
-{
- move(stackPointerRegister, firstArgumentRegister);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
-}
-
-ALWAYS_INLINE void JIT::restoreArgumentReferenceForTrampoline()
-{
-#if CPU(X86)
- // Within a trampoline the return address will be on the stack at this point.
- addPtr(Imm32(sizeof(void*)), stackPointerRegister, firstArgumentRegister);
-#elif CPU(ARM)
- move(stackPointerRegister, firstArgumentRegister);
-#endif
- // In the trampoline on x86-64, the first argument register is not overwritten.
-}
-
-ALWAYS_INLINE JIT::Jump JIT::checkStructure(RegisterID reg, Structure* structure)
-{
- return branchPtr(NotEqual, Address(reg, OBJECT_OFFSETOF(JSCell, m_structure)), ImmPtr(structure));
-}
-
-ALWAYS_INLINE void JIT::linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator& iter, int vReg)
-{
- if (!m_codeBlock->isKnownNotImmediate(vReg))
- linkSlowCase(iter);
-}
-
-ALWAYS_INLINE void JIT::addSlowCase(Jump jump)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- m_slowCases.append(SlowCaseEntry(jump, m_bytecodeOffset));
-}
-
-ALWAYS_INLINE void JIT::addSlowCase(JumpList jumpList)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- const JumpList::JumpVector& jumpVector = jumpList.jumps();
- size_t size = jumpVector.size();
- for (size_t i = 0; i < size; ++i)
- m_slowCases.append(SlowCaseEntry(jumpVector[i], m_bytecodeOffset));
-}
-
-ALWAYS_INLINE void JIT::addJump(Jump jump, int relativeOffset)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- m_jmpTable.append(JumpTable(jump, m_bytecodeOffset + relativeOffset));
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowToHot(Jump jump, int relativeOffset)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- jump.linkTo(m_labels[m_bytecodeOffset + relativeOffset], this);
-}
-
-#if ENABLE(SAMPLING_FLAGS)
-ALWAYS_INLINE void JIT::setSamplingFlag(int32_t flag)
-{
- ASSERT(flag >= 1);
- ASSERT(flag <= 32);
- or32(Imm32(1u << (flag - 1)), AbsoluteAddress(&SamplingFlags::s_flags));
-}
-
-ALWAYS_INLINE void JIT::clearSamplingFlag(int32_t flag)
-{
- ASSERT(flag >= 1);
- ASSERT(flag <= 32);
- and32(Imm32(~(1u << (flag - 1))), AbsoluteAddress(&SamplingFlags::s_flags));
-}
-#endif
-
-#if ENABLE(SAMPLING_COUNTERS)
-ALWAYS_INLINE void JIT::emitCount(AbstractSamplingCounter& counter, uint32_t count)
-{
-#if CPU(X86_64) // Or any other 64-bit plattform.
- addPtr(Imm32(count), AbsoluteAddress(&counter.m_counter));
-#elif CPU(X86) // Or any other little-endian 32-bit plattform.
- intptr_t hiWord = reinterpret_cast<intptr_t>(&counter.m_counter) + sizeof(int32_t);
- add32(Imm32(count), AbsoluteAddress(&counter.m_counter));
- addWithCarry32(Imm32(0), AbsoluteAddress(reinterpret_cast<void*>(hiWord)));
-#else
-#error "SAMPLING_FLAGS not implemented on this platform."
-#endif
-}
-#endif
-
-#if ENABLE(OPCODE_SAMPLING)
-#if CPU(X86_64)
-ALWAYS_INLINE void JIT::sampleInstruction(Instruction* instruction, bool inHostFunction)
-{
- move(ImmPtr(m_interpreter->sampler()->sampleSlot()), X86Registers::ecx);
- storePtr(ImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), X86Registers::ecx);
-}
-#else
-ALWAYS_INLINE void JIT::sampleInstruction(Instruction* instruction, bool inHostFunction)
-{
- storePtr(ImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), m_interpreter->sampler()->sampleSlot());
-}
-#endif
-#endif
-
-#if ENABLE(CODEBLOCK_SAMPLING)
-#if CPU(X86_64)
-ALWAYS_INLINE void JIT::sampleCodeBlock(CodeBlock* codeBlock)
-{
- move(ImmPtr(m_interpreter->sampler()->codeBlockSlot()), X86Registers::ecx);
- storePtr(ImmPtr(codeBlock), X86Registers::ecx);
-}
-#else
-ALWAYS_INLINE void JIT::sampleCodeBlock(CodeBlock* codeBlock)
-{
- storePtr(ImmPtr(codeBlock), m_interpreter->sampler()->codeBlockSlot());
-}
-#endif
-#endif
-
-ALWAYS_INLINE bool JIT::isOperandConstantImmediateChar(unsigned src)
-{
- return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isString() && asString(getConstantOperand(src).asCell())->length() == 1;
-}
-
-#if USE(JSVALUE32_64)
-
-inline void JIT::emitLoadTag(unsigned index, RegisterID tag)
-{
- RegisterID mappedTag;
- if (getMappedTag(index, mappedTag)) {
- move(mappedTag, tag);
- unmap(tag);
- return;
- }
-
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- move(Imm32(getConstantOperand(index).tag()), tag);
- unmap(tag);
- return;
- }
-
- load32(tagFor(index), tag);
- unmap(tag);
-}
-
-inline void JIT::emitLoadPayload(unsigned index, RegisterID payload)
-{
- RegisterID mappedPayload;
- if (getMappedPayload(index, mappedPayload)) {
- move(mappedPayload, payload);
- unmap(payload);
- return;
- }
-
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- move(Imm32(getConstantOperand(index).payload()), payload);
- unmap(payload);
- return;
- }
-
- load32(payloadFor(index), payload);
- unmap(payload);
-}
-
-inline void JIT::emitLoad(const JSValue& v, RegisterID tag, RegisterID payload)
-{
- move(Imm32(v.payload()), payload);
- move(Imm32(v.tag()), tag);
-}
-
-inline void JIT::emitLoad(unsigned index, RegisterID tag, RegisterID payload, RegisterID base)
-{
- ASSERT(tag != payload);
-
- if (base == callFrameRegister) {
- ASSERT(payload != base);
- emitLoadPayload(index, payload);
- emitLoadTag(index, tag);
- return;
- }
-
- if (payload == base) { // avoid stomping base
- load32(tagFor(index, base), tag);
- load32(payloadFor(index, base), payload);
- return;
- }
-
- load32(payloadFor(index, base), payload);
- load32(tagFor(index, base), tag);
-}
-
-inline void JIT::emitLoad2(unsigned index1, RegisterID tag1, RegisterID payload1, unsigned index2, RegisterID tag2, RegisterID payload2)
-{
- if (isMapped(index1)) {
- emitLoad(index1, tag1, payload1);
- emitLoad(index2, tag2, payload2);
- return;
- }
- emitLoad(index2, tag2, payload2);
- emitLoad(index1, tag1, payload1);
-}
-
-inline void JIT::emitLoadDouble(unsigned index, FPRegisterID value)
-{
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- Register& inConstantPool = m_codeBlock->constantRegister(index);
- loadDouble(&inConstantPool, value);
- } else
- loadDouble(addressFor(index), value);
-}
-
-inline void JIT::emitLoadInt32ToDouble(unsigned index, FPRegisterID value)
-{
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- Register& inConstantPool = m_codeBlock->constantRegister(index);
- char* bytePointer = reinterpret_cast<char*>(&inConstantPool);
- convertInt32ToDouble(AbsoluteAddress(bytePointer + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), value);
- } else
- convertInt32ToDouble(payloadFor(index), value);
-}
-
-inline void JIT::emitStore(unsigned index, RegisterID tag, RegisterID payload, RegisterID base)
-{
- store32(payload, payloadFor(index, base));
- store32(tag, tagFor(index, base));
-}
-
-inline void JIT::emitStoreInt32(unsigned index, RegisterID payload, bool indexIsInt32)
-{
- store32(payload, payloadFor(index, callFrameRegister));
- if (!indexIsInt32)
- store32(Imm32(JSValue::Int32Tag), tagFor(index, callFrameRegister));
-}
-
-inline void JIT::emitStoreInt32(unsigned index, Imm32 payload, bool indexIsInt32)
-{
- store32(payload, payloadFor(index, callFrameRegister));
- if (!indexIsInt32)
- store32(Imm32(JSValue::Int32Tag), tagFor(index, callFrameRegister));
-}
-
-inline void JIT::emitStoreCell(unsigned index, RegisterID payload, bool indexIsCell)
-{
- store32(payload, payloadFor(index, callFrameRegister));
- if (!indexIsCell)
- store32(Imm32(JSValue::CellTag), tagFor(index, callFrameRegister));
-}
-
-inline void JIT::emitStoreBool(unsigned index, RegisterID tag, bool indexIsBool)
-{
- if (!indexIsBool)
- store32(Imm32(0), payloadFor(index, callFrameRegister));
- store32(tag, tagFor(index, callFrameRegister));
-}
-
-inline void JIT::emitStoreDouble(unsigned index, FPRegisterID value)
-{
- storeDouble(value, addressFor(index));
-}
-
-inline void JIT::emitStore(unsigned index, const JSValue constant, RegisterID base)
-{
- store32(Imm32(constant.payload()), payloadFor(index, base));
- store32(Imm32(constant.tag()), tagFor(index, base));
-}
-
-ALWAYS_INLINE void JIT::emitInitRegister(unsigned dst)
-{
- emitStore(dst, jsUndefined());
-}
-
-inline bool JIT::isLabeled(unsigned bytecodeOffset)
-{
- for (size_t numberOfJumpTargets = m_codeBlock->numberOfJumpTargets(); m_jumpTargetIndex != numberOfJumpTargets; ++m_jumpTargetIndex) {
- unsigned jumpTarget = m_codeBlock->jumpTarget(m_jumpTargetIndex);
- if (jumpTarget == bytecodeOffset)
- return true;
- if (jumpTarget > bytecodeOffset)
- return false;
- }
- return false;
-}
-
-inline void JIT::map(unsigned bytecodeOffset, unsigned virtualRegisterIndex, RegisterID tag, RegisterID payload)
-{
- if (isLabeled(bytecodeOffset))
- return;
-
- m_mappedBytecodeOffset = bytecodeOffset;
- m_mappedVirtualRegisterIndex = virtualRegisterIndex;
- m_mappedTag = tag;
- m_mappedPayload = payload;
-}
-
-inline void JIT::unmap(RegisterID registerID)
-{
- if (m_mappedTag == registerID)
- m_mappedTag = (RegisterID)-1;
- else if (m_mappedPayload == registerID)
- m_mappedPayload = (RegisterID)-1;
-}
-
-inline void JIT::unmap()
-{
- m_mappedBytecodeOffset = (unsigned)-1;
- m_mappedVirtualRegisterIndex = (unsigned)-1;
- m_mappedTag = (RegisterID)-1;
- m_mappedPayload = (RegisterID)-1;
-}
-
-inline bool JIT::isMapped(unsigned virtualRegisterIndex)
-{
- if (m_mappedBytecodeOffset != m_bytecodeOffset)
- return false;
- if (m_mappedVirtualRegisterIndex != virtualRegisterIndex)
- return false;
- return true;
-}
-
-inline bool JIT::getMappedPayload(unsigned virtualRegisterIndex, RegisterID& payload)
-{
- if (m_mappedBytecodeOffset != m_bytecodeOffset)
- return false;
- if (m_mappedVirtualRegisterIndex != virtualRegisterIndex)
- return false;
- if (m_mappedPayload == (RegisterID)-1)
- return false;
- payload = m_mappedPayload;
- return true;
-}
-
-inline bool JIT::getMappedTag(unsigned virtualRegisterIndex, RegisterID& tag)
-{
- if (m_mappedBytecodeOffset != m_bytecodeOffset)
- return false;
- if (m_mappedVirtualRegisterIndex != virtualRegisterIndex)
- return false;
- if (m_mappedTag == (RegisterID)-1)
- return false;
- tag = m_mappedTag;
- return true;
-}
-
-inline void JIT::emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex)
-{
- if (!m_codeBlock->isKnownNotImmediate(virtualRegisterIndex)) {
- if (m_codeBlock->isConstantRegisterIndex(virtualRegisterIndex))
- addSlowCase(jump());
- else
- addSlowCase(emitJumpIfNotJSCell(virtualRegisterIndex));
- }
-}
-
-inline void JIT::emitJumpSlowCaseIfNotJSCell(unsigned virtualRegisterIndex, RegisterID tag)
-{
- if (!m_codeBlock->isKnownNotImmediate(virtualRegisterIndex)) {
- if (m_codeBlock->isConstantRegisterIndex(virtualRegisterIndex))
- addSlowCase(jump());
- else
- addSlowCase(branch32(NotEqual, tag, Imm32(JSValue::CellTag)));
- }
-}
-
-inline void JIT::linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator& iter, unsigned virtualRegisterIndex)
-{
- if (!m_codeBlock->isKnownNotImmediate(virtualRegisterIndex))
- linkSlowCase(iter);
-}
-
-ALWAYS_INLINE bool JIT::isOperandConstantImmediateInt(unsigned src)
-{
- return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isInt32();
-}
-
-ALWAYS_INLINE bool JIT::getOperandConstantImmediateInt(unsigned op1, unsigned op2, unsigned& op, int32_t& constant)
-{
- if (isOperandConstantImmediateInt(op1)) {
- constant = getConstantOperand(op1).asInt32();
- op = op2;
- return true;
- }
-
- if (isOperandConstantImmediateInt(op2)) {
- constant = getConstantOperand(op2).asInt32();
- op = op1;
- return true;
- }
-
- return false;
-}
-
-#else // USE(JSVALUE32_64)
-
-ALWAYS_INLINE void JIT::killLastResultRegister()
-{
- m_lastResultBytecodeRegister = std::numeric_limits<int>::max();
-}
-
-// get arg puts an arg from the SF register array into a h/w register
-ALWAYS_INLINE void JIT::emitGetVirtualRegister(int src, RegisterID dst)
-{
- ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
-
- // TODO: we want to reuse values that are already in registers if we can - add a register allocator!
- if (m_codeBlock->isConstantRegisterIndex(src)) {
- JSValue value = m_codeBlock->getConstant(src);
- move(ImmPtr(JSValue::encode(value)), dst);
- killLastResultRegister();
- return;
- }
-
- if (src == m_lastResultBytecodeRegister && m_codeBlock->isTemporaryRegisterIndex(src)) {
- bool atJumpTarget = false;
- while (m_jumpTargetsPosition < m_codeBlock->numberOfJumpTargets() && m_codeBlock->jumpTarget(m_jumpTargetsPosition) <= m_bytecodeOffset) {
- if (m_codeBlock->jumpTarget(m_jumpTargetsPosition) == m_bytecodeOffset)
- atJumpTarget = true;
- ++m_jumpTargetsPosition;
- }
-
- if (!atJumpTarget) {
- // The argument we want is already stored in eax
- if (dst != cachedResultRegister)
- move(cachedResultRegister, dst);
- killLastResultRegister();
- return;
- }
- }
-
- loadPtr(Address(callFrameRegister, src * sizeof(Register)), dst);
- killLastResultRegister();
-}
-
-ALWAYS_INLINE void JIT::emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2)
-{
- if (src2 == m_lastResultBytecodeRegister) {
- emitGetVirtualRegister(src2, dst2);
- emitGetVirtualRegister(src1, dst1);
- } else {
- emitGetVirtualRegister(src1, dst1);
- emitGetVirtualRegister(src2, dst2);
- }
-}
-
-ALWAYS_INLINE int32_t JIT::getConstantOperandImmediateInt(unsigned src)
-{
- return getConstantOperand(src).asInt32();
-}
-
-ALWAYS_INLINE bool JIT::isOperandConstantImmediateInt(unsigned src)
-{
- return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isInt32();
-}
-
-ALWAYS_INLINE void JIT::emitPutVirtualRegister(unsigned dst, RegisterID from)
-{
- storePtr(from, Address(callFrameRegister, dst * sizeof(Register)));
- m_lastResultBytecodeRegister = (from == cachedResultRegister) ? static_cast<int>(dst) : std::numeric_limits<int>::max();
-}
-
-ALWAYS_INLINE void JIT::emitInitRegister(unsigned dst)
-{
- storePtr(ImmPtr(JSValue::encode(jsUndefined())), Address(callFrameRegister, dst * sizeof(Register)));
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfJSCell(RegisterID reg)
-{
-#if USE(JSVALUE64)
- return branchTestPtr(Zero, reg, tagMaskRegister);
-#else
- return branchTest32(Zero, reg, Imm32(JSImmediate::TagMask));
-#endif
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfBothJSCells(RegisterID reg1, RegisterID reg2, RegisterID scratch)
-{
- move(reg1, scratch);
- orPtr(reg2, scratch);
- return emitJumpIfJSCell(scratch);
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfJSCell(RegisterID reg)
-{
- addSlowCase(emitJumpIfJSCell(reg));
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfNotJSCell(RegisterID reg)
-{
-#if USE(JSVALUE64)
- return branchTestPtr(NonZero, reg, tagMaskRegister);
-#else
- return branchTest32(NonZero, reg, Imm32(JSImmediate::TagMask));
-#endif
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfNotJSCell(RegisterID reg)
-{
- addSlowCase(emitJumpIfNotJSCell(reg));
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfNotJSCell(RegisterID reg, int vReg)
-{
- if (!m_codeBlock->isKnownNotImmediate(vReg))
- emitJumpSlowCaseIfNotJSCell(reg);
-}
-
-#if USE(JSVALUE64)
-
-inline void JIT::emitLoadDouble(unsigned index, FPRegisterID value)
-{
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- Register& inConstantPool = m_codeBlock->constantRegister(index);
- loadDouble(&inConstantPool, value);
- } else
- loadDouble(addressFor(index), value);
-}
-
-inline void JIT::emitLoadInt32ToDouble(unsigned index, FPRegisterID value)
-{
- if (m_codeBlock->isConstantRegisterIndex(index)) {
- Register& inConstantPool = m_codeBlock->constantRegister(index);
- convertInt32ToDouble(AbsoluteAddress(&inConstantPool), value);
- } else
- convertInt32ToDouble(addressFor(index), value);
-}
-#endif
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfImmediateInteger(RegisterID reg)
-{
-#if USE(JSVALUE64)
- return branchPtr(AboveOrEqual, reg, tagTypeNumberRegister);
-#else
- return branchTest32(NonZero, reg, Imm32(JSImmediate::TagTypeNumber));
-#endif
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfNotImmediateInteger(RegisterID reg)
-{
-#if USE(JSVALUE64)
- return branchPtr(Below, reg, tagTypeNumberRegister);
-#else
- return branchTest32(Zero, reg, Imm32(JSImmediate::TagTypeNumber));
-#endif
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitJumpIfNotImmediateIntegers(RegisterID reg1, RegisterID reg2, RegisterID scratch)
-{
- move(reg1, scratch);
- andPtr(reg2, scratch);
- return emitJumpIfNotImmediateInteger(scratch);
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfNotImmediateInteger(RegisterID reg)
-{
- addSlowCase(emitJumpIfNotImmediateInteger(reg));
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfNotImmediateIntegers(RegisterID reg1, RegisterID reg2, RegisterID scratch)
-{
- addSlowCase(emitJumpIfNotImmediateIntegers(reg1, reg2, scratch));
-}
-
-ALWAYS_INLINE void JIT::emitJumpSlowCaseIfNotImmediateNumber(RegisterID reg)
-{
- addSlowCase(emitJumpIfNotImmediateNumber(reg));
-}
-
-#if USE(JSVALUE32_64)
-ALWAYS_INLINE void JIT::emitFastArithDeTagImmediate(RegisterID reg)
-{
- subPtr(Imm32(JSImmediate::TagTypeNumber), reg);
-}
-
-ALWAYS_INLINE JIT::Jump JIT::emitFastArithDeTagImmediateJumpIfZero(RegisterID reg)
-{
- return branchSubPtr(Zero, Imm32(JSImmediate::TagTypeNumber), reg);
-}
-#endif
-
-ALWAYS_INLINE void JIT::emitFastArithReTagImmediate(RegisterID src, RegisterID dest)
-{
-#if USE(JSVALUE64)
- emitFastArithIntToImmNoCheck(src, dest);
-#else
- if (src != dest)
- move(src, dest);
- addPtr(Imm32(JSImmediate::TagTypeNumber), dest);
-#endif
-}
-
-// operand is int32_t, must have been zero-extended if register is 64-bit.
-ALWAYS_INLINE void JIT::emitFastArithIntToImmNoCheck(RegisterID src, RegisterID dest)
-{
-#if USE(JSVALUE64)
- if (src != dest)
- move(src, dest);
- orPtr(tagTypeNumberRegister, dest);
-#else
- signExtend32ToPtr(src, dest);
- addPtr(dest, dest);
- emitFastArithReTagImmediate(dest, dest);
-#endif
-}
-
-ALWAYS_INLINE void JIT::emitTagAsBoolImmediate(RegisterID reg)
-{
- lshift32(Imm32(JSImmediate::ExtendedPayloadShift), reg);
- or32(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), reg);
-}
-
-#endif // USE(JSVALUE32_64)
-
-} // namespace JSC
-
-#endif // ENABLE(JIT)
-
-#endif