| /* |
| * Copyright (C) 2012 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 DFGCallArrayAllocatorSlowPathGenerator_h |
| #define DFGCallArrayAllocatorSlowPathGenerator_h |
| |
| #include <wtf/Platform.h> |
| |
| #if ENABLE(DFG_JIT) |
| |
| #include "DFGCommon.h" |
| #include "DFGSlowPathGenerator.h" |
| #include "DFGSpeculativeJIT.h" |
| #include <wtf/Vector.h> |
| |
| namespace JSC { namespace DFG { |
| |
| class CallArrayAllocatorSlowPathGenerator : public JumpingSlowPathGenerator<MacroAssembler::JumpList> { |
| public: |
| CallArrayAllocatorSlowPathGenerator( |
| MacroAssembler::JumpList from, SpeculativeJIT* jit, P_DFGOperation_EStZ function, |
| GPRReg resultGPR, GPRReg storageGPR, Structure* structure, size_t size) |
| : JumpingSlowPathGenerator<MacroAssembler::JumpList>(from, jit) |
| , m_function(function) |
| , m_resultGPR(resultGPR) |
| , m_storageGPR(storageGPR) |
| , m_structure(structure) |
| , m_size(size) |
| { |
| ASSERT(size < static_cast<size_t>(std::numeric_limits<int32_t>::max())); |
| jit->silentSpillAllRegistersImpl(false, m_plans, resultGPR); |
| } |
| |
| protected: |
| void generateInternal(SpeculativeJIT* jit) |
| { |
| linkFrom(jit); |
| for (unsigned i = 0; i < m_plans.size(); ++i) |
| jit->silentSpill(m_plans[i]); |
| jit->callOperation(m_function, m_resultGPR, m_structure, m_size); |
| GPRReg canTrample = SpeculativeJIT::pickCanTrample(m_resultGPR); |
| for (unsigned i = m_plans.size(); i--;) |
| jit->silentFill(m_plans[i], canTrample); |
| jit->m_jit.loadPtr(MacroAssembler::Address(m_resultGPR, JSObject::butterflyOffset()), m_storageGPR); |
| jumpTo(jit); |
| } |
| |
| private: |
| P_DFGOperation_EStZ m_function; |
| GPRReg m_resultGPR; |
| GPRReg m_storageGPR; |
| Structure* m_structure; |
| size_t m_size; |
| Vector<SilentRegisterSavePlan, 2> m_plans; |
| }; |
| |
| class CallArrayAllocatorWithVariableSizeSlowPathGenerator : public JumpingSlowPathGenerator<MacroAssembler::JumpList> { |
| public: |
| CallArrayAllocatorWithVariableSizeSlowPathGenerator( |
| MacroAssembler::JumpList from, SpeculativeJIT* jit, P_DFGOperation_EStZ function, |
| GPRReg resultGPR, Structure* contiguousStructure, Structure* arrayStorageStructure, GPRReg sizeGPR) |
| : JumpingSlowPathGenerator<MacroAssembler::JumpList>(from, jit) |
| , m_function(function) |
| , m_resultGPR(resultGPR) |
| , m_contiguousStructure(contiguousStructure) |
| , m_arrayStorageStructure(arrayStorageStructure) |
| , m_sizeGPR(sizeGPR) |
| { |
| jit->silentSpillAllRegistersImpl(false, m_plans, resultGPR); |
| } |
| |
| protected: |
| void generateInternal(SpeculativeJIT* jit) |
| { |
| linkFrom(jit); |
| for (unsigned i = 0; i < m_plans.size(); ++i) |
| jit->silentSpill(m_plans[i]); |
| GPRReg scratchGPR = AssemblyHelpers::selectScratchGPR(m_sizeGPR); |
| MacroAssembler::Jump bigLength = jit->m_jit.branch32(MacroAssembler::AboveOrEqual, m_sizeGPR, MacroAssembler::TrustedImm32(MIN_SPARSE_ARRAY_INDEX)); |
| jit->m_jit.move(MacroAssembler::TrustedImmPtr(m_contiguousStructure), scratchGPR); |
| MacroAssembler::Jump done = jit->m_jit.jump(); |
| bigLength.link(&jit->m_jit); |
| jit->m_jit.move(MacroAssembler::TrustedImmPtr(m_arrayStorageStructure), scratchGPR); |
| done.link(&jit->m_jit); |
| jit->callOperation(m_function, m_resultGPR, scratchGPR, m_sizeGPR); |
| GPRReg canTrample = SpeculativeJIT::pickCanTrample(m_resultGPR); |
| for (unsigned i = m_plans.size(); i--;) |
| jit->silentFill(m_plans[i], canTrample); |
| jumpTo(jit); |
| } |
| |
| private: |
| P_DFGOperation_EStZ m_function; |
| GPRReg m_resultGPR; |
| Structure* m_contiguousStructure; |
| Structure* m_arrayStorageStructure; |
| GPRReg m_sizeGPR; |
| Vector<SilentRegisterSavePlan, 2> m_plans; |
| }; |
| |
| } } // namespace JSC::DFG |
| |
| #endif // ENABLE(DFG_JIT) |
| |
| #endif // DFGCallArrayAllocatorSlowPathGenerator_h |
| |