1/* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "DFGAssemblyHelpers.h" 28 29#if ENABLE(DFG_JIT) 30 31namespace JSC { namespace DFG { 32 33ExecutableBase* AssemblyHelpers::executableFor(const CodeOrigin& codeOrigin) 34{ 35 if (!codeOrigin.inlineCallFrame) 36 return m_codeBlock->ownerExecutable(); 37 38 return codeOrigin.inlineCallFrame->executable.get(); 39} 40 41Vector<BytecodeAndMachineOffset>& AssemblyHelpers::decodedCodeMapFor(CodeBlock* codeBlock) 42{ 43 ASSERT(codeBlock == codeBlock->baselineVersion()); 44 ASSERT(codeBlock->getJITType() == JITCode::BaselineJIT); 45 ASSERT(codeBlock->jitCodeMap()); 46 47 HashMap<CodeBlock*, Vector<BytecodeAndMachineOffset> >::AddResult result = m_decodedCodeMaps.add(codeBlock, Vector<BytecodeAndMachineOffset>()); 48 49 if (result.isNewEntry) 50 codeBlock->jitCodeMap()->decode(result.iterator->value); 51 52 return result.iterator->value; 53} 54 55#if ENABLE(SAMPLING_FLAGS) 56void AssemblyHelpers::setSamplingFlag(int32_t flag) 57{ 58 ASSERT(flag >= 1); 59 ASSERT(flag <= 32); 60 or32(TrustedImm32(1u << (flag - 1)), AbsoluteAddress(SamplingFlags::addressOfFlags())); 61} 62 63void AssemblyHelpers::clearSamplingFlag(int32_t flag) 64{ 65 ASSERT(flag >= 1); 66 ASSERT(flag <= 32); 67 and32(TrustedImm32(~(1u << (flag - 1))), AbsoluteAddress(SamplingFlags::addressOfFlags())); 68} 69#endif 70 71#if DFG_ENABLE(JIT_ASSERT) 72#if USE(JSVALUE64) 73void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr) 74{ 75#if CPU(X86_64) 76 Jump checkInt32 = branch64(BelowOrEqual, gpr, TrustedImm64(static_cast<uintptr_t>(0xFFFFFFFFu))); 77 breakpoint(); 78 checkInt32.link(this); 79#else 80 UNUSED_PARAM(gpr); 81#endif 82} 83 84void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr) 85{ 86 Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister); 87 breakpoint(); 88 checkJSInt32.link(this); 89} 90 91void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr) 92{ 93 Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister); 94 breakpoint(); 95 checkJSNumber.link(this); 96} 97 98void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr) 99{ 100 Jump checkJSInt32 = branch64(AboveOrEqual, gpr, GPRInfo::tagTypeNumberRegister); 101 Jump checkJSNumber = branchTest64(MacroAssembler::NonZero, gpr, GPRInfo::tagTypeNumberRegister); 102 checkJSInt32.link(this); 103 breakpoint(); 104 checkJSNumber.link(this); 105} 106 107void AssemblyHelpers::jitAssertIsCell(GPRReg gpr) 108{ 109 Jump checkCell = branchTest64(MacroAssembler::Zero, gpr, GPRInfo::tagMaskRegister); 110 breakpoint(); 111 checkCell.link(this); 112} 113#elif USE(JSVALUE32_64) 114void AssemblyHelpers::jitAssertIsInt32(GPRReg gpr) 115{ 116 UNUSED_PARAM(gpr); 117} 118 119void AssemblyHelpers::jitAssertIsJSInt32(GPRReg gpr) 120{ 121 Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag)); 122 breakpoint(); 123 checkJSInt32.link(this); 124} 125 126void AssemblyHelpers::jitAssertIsJSNumber(GPRReg gpr) 127{ 128 Jump checkJSInt32 = branch32(Equal, gpr, TrustedImm32(JSValue::Int32Tag)); 129 Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag)); 130 breakpoint(); 131 checkJSInt32.link(this); 132 checkJSDouble.link(this); 133} 134 135void AssemblyHelpers::jitAssertIsJSDouble(GPRReg gpr) 136{ 137 Jump checkJSDouble = branch32(Below, gpr, TrustedImm32(JSValue::LowestTag)); 138 breakpoint(); 139 checkJSDouble.link(this); 140} 141 142void AssemblyHelpers::jitAssertIsCell(GPRReg gpr) 143{ 144 Jump checkCell = branch32(Equal, gpr, TrustedImm32(JSValue::CellTag)); 145 breakpoint(); 146 checkCell.link(this); 147} 148#endif // USE(JSVALUE32_64) 149 150void AssemblyHelpers::jitAssertHasValidCallFrame() 151{ 152 Jump checkCFR = branchTestPtr(Zero, GPRInfo::callFrameRegister, TrustedImm32(7)); 153 breakpoint(); 154 checkCFR.link(this); 155} 156#endif // DFG_ENABLE(JIT_ASSERT) 157 158} } // namespace JSC::DFG 159 160#endif // ENABLE(DFG_JIT) 161 162