| /* |
| * 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 "DFGAssemblyHelpers.h" |
| |
| #if ENABLE(DFG_JIT) |
| |
| namespace JSC { namespace DFG { |
| |
| ExecutableBase* AssemblyHelpers::executableFor(const CodeOrigin& codeOrigin) |
| { |
| if (!codeOrigin.inlineCallFrame) |
| return m_codeBlock->ownerExecutable(); |
| |
| return codeOrigin.inlineCallFrame->executable.get(); |
| } |
| |
| Vector<BytecodeAndMachineOffset>& AssemblyHelpers::decodedCodeMapFor(CodeBlock* codeBlock) |
| { |
| ASSERT(codeBlock == codeBlock->baselineVersion()); |
| ASSERT(codeBlock->getJITType() == JITCode::BaselineJIT); |
| ASSERT(codeBlock->jitCodeMap()); |
| |
| HashMap<CodeBlock*, Vector<BytecodeAndMachineOffset> >::AddResult result = m_decodedCodeMaps.add(codeBlock, Vector<BytecodeAndMachineOffset>()); |
| |
| if (result.isNewEntry) |
| codeBlock->jitCodeMap()->decode(result.iterator->value); |
| |
| return result.iterator->value; |
| } |
| |
| #if ENABLE(SAMPLING_FLAGS) |
| void AssemblyHelpers::setSamplingFlag(int32_t flag) |
| { |
| ASSERT(flag >= 1); |
| ASSERT(flag <= 32); |
| or32(TrustedImm32(1u << (flag - 1)), AbsoluteAddress(SamplingFlags::addressOfFlags())); |
| } |
| |
| void AssemblyHelpers::clearSamplingFlag(int32_t flag) |
| { |
| ASSERT(flag >= 1); |
| ASSERT(flag <= 32); |
| and32(TrustedImm32(~(1u << (flag - 1))), AbsoluteAddress(SamplingFlags::addressOfFlags())); |
| } |
| #endif |
| |
| #if DFG_ENABLE(JIT_ASSERT) |
| #if USE(JSVALUE64) |
| void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr) |
| { |
| #if CPU(X86_64) |
| Jump checkInt32 = branch64(BelowOrEqual, gpr, TrustedImm64(static_cast<uintptr_t>(0xFFFFFFFFu))); |
| breakpoint(); |
| checkInt32.link(this); |
| #else |
| UNUSED_PARAM(gpr); |
| #endif |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr) |
| { |
| Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister); |
| breakpoint(); |
| checkJSInt32.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr) |
| { |
| Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister); |
| breakpoint(); |
| checkJSNumber.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr) |
| { |
| Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister); |
| Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister); |
| checkJSInt32.link(this); |
| breakpoint(); |
| checkJSNumber.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsCell(GPRReg gpr) |
| { |
| Jump checkCell = branchTest64(MacroAssembler::Zero, gpr, GPRInfo::tagMaskRegister); |
| breakpoint(); |
| checkCell.link(this); |
| } |
| #elif USE(JSVALUE32_64) |
| void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr) |
| { |
| UNUSED_PARAM(gpr); |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr) |
| { |
| Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag)); |
| breakpoint(); |
| checkJSInt32.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr) |
| { |
| Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag)); |
| Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag)); |
| breakpoint(); |
| checkJSInt32.link(this); |
| checkJSDouble.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr) |
| { |
| Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag)); |
| breakpoint(); |
| checkJSDouble.link(this); |
| } |
| |
| void AssemblyHelpers::jitAssertIsCell(GPRReg gpr) |
| { |
| Jump checkCell = branch32(Equal, gpr, TrustedImm32(JSValue::CellTag)); |
| breakpoint(); |
| checkCell.link(this); |
| } |
| #endif // USE(JSVALUE32_64) |
| |
| void AssemblyHelpers::jitAssertHasValidCallFrame() |
| { |
| Jump checkCFR = branchTestPtr(Zero, GPRInfo::callFrameRegister, TrustedImm32(7)); |
| breakpoint(); |
| checkCFR.link(this); |
| } |
| #endif // DFG_ENABLE(JIT_ASSERT) |
| |
| } } // namespace JSC::DFG |
| |
| #endif // ENABLE(DFG_JIT) |
| |