diff options
Diffstat (limited to 'Source/JavaScriptCore/jit/JITCall32_64.cpp')
| -rw-r--r-- | Source/JavaScriptCore/jit/JITCall32_64.cpp | 319 |
1 files changed, 152 insertions, 167 deletions
diff --git a/Source/JavaScriptCore/jit/JITCall32_64.cpp b/Source/JavaScriptCore/jit/JITCall32_64.cpp index 6086038a2..573b0623b 100644 --- a/Source/JavaScriptCore/jit/JITCall32_64.cpp +++ b/Source/JavaScriptCore/jit/JITCall32_64.cpp @@ -1,5 +1,5 @@ /* - * Copyright (C) 2008, 2013 Apple Inc. All rights reserved. + * Copyright (C) 2008, 2013-2015 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -29,16 +29,16 @@ #if USE(JSVALUE32_64) #include "JIT.h" -#include "Arguments.h" #include "CodeBlock.h" #include "Interpreter.h" #include "JITInlines.h" #include "JSArray.h" #include "JSFunction.h" -#include "Operations.h" -#include "RepatchBuffer.h" +#include "JSCInlines.h" +#include "LinkBuffer.h" #include "ResultType.h" -#include "SamplingTool.h" +#include "SetupVarargsFrame.h" +#include "StackAlignment.h" #include <wtf/StringPrintStream.h> @@ -56,43 +56,21 @@ void JIT::emit_op_ret(Instruction* currentInstruction) unsigned dst = currentInstruction[1].u.operand; emitLoad(dst, regT1, regT0); - emitGetReturnPCFromCallFrameHeaderPtr(regT2); - emitGetCallerFrameFromCallFrameHeaderPtr(callFrameRegister); - restoreReturnAddressBeforeReturn(regT2); + checkStackPointerAlignment(); + emitRestoreCalleeSaves(); + emitFunctionEpilogue(); ret(); } -void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction) +void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) { - unsigned result = currentInstruction[1].u.operand; - unsigned thisReg = currentInstruction[2].u.operand; - - emitLoad(result, regT1, regT0); - Jump notJSCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)); - loadPtr(Address(regT0, JSCell::structureOffset()), regT2); - Jump notObject = emitJumpIfNotObject(regT2); - - emitGetReturnPCFromCallFrameHeaderPtr(regT2); - emitGetCallerFrameFromCallFrameHeaderPtr(callFrameRegister); - - restoreReturnAddressBeforeReturn(regT2); - ret(); - - notJSCell.link(this); - notObject.link(this); - emitLoad(thisReg, regT1, regT0); - - emitGetReturnPCFromCallFrameHeaderPtr(regT2); - emitGetCallerFrameFromCallFrameHeaderPtr(callFrameRegister); - - restoreReturnAddressBeforeReturn(regT2); - ret(); + compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++); } -void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) +void JIT::emitSlow_op_tail_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) { - compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++); + compileOpCallSlowCase(op_tail_call, currentInstruction, iter, m_callLinkInfoIndex++); } void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) @@ -105,6 +83,21 @@ void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowC compileOpCallSlowCase(op_call_varargs, currentInstruction, iter, m_callLinkInfoIndex++); } +void JIT::emitSlow_op_tail_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) +{ + compileOpCallSlowCase(op_tail_call_varargs, currentInstruction, iter, m_callLinkInfoIndex++); +} + +void JIT::emitSlow_op_tail_call_forward_arguments(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) +{ + compileOpCallSlowCase(op_tail_call_forward_arguments, currentInstruction, iter, m_callLinkInfoIndex++); +} + +void JIT::emitSlow_op_construct_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) +{ + compileOpCallSlowCase(op_construct_varargs, currentInstruction, iter, m_callLinkInfoIndex++); +} + void JIT::emitSlow_op_construct(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter) { compileOpCallSlowCase(op_construct, currentInstruction, iter, m_callLinkInfoIndex++); @@ -115,6 +108,11 @@ void JIT::emit_op_call(Instruction* currentInstruction) compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++); } +void JIT::emit_op_tail_call(Instruction* currentInstruction) +{ + compileOpCall(op_tail_call, currentInstruction, m_callLinkInfoIndex++); +} + void JIT::emit_op_call_eval(Instruction* currentInstruction) { compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex); @@ -125,82 +123,77 @@ void JIT::emit_op_call_varargs(Instruction* currentInstruction) compileOpCall(op_call_varargs, currentInstruction, m_callLinkInfoIndex++); } +void JIT::emit_op_tail_call_varargs(Instruction* currentInstruction) +{ + compileOpCall(op_tail_call_varargs, currentInstruction, m_callLinkInfoIndex++); +} + +void JIT::emit_op_tail_call_forward_arguments(Instruction* currentInstruction) +{ + compileOpCall(op_tail_call_forward_arguments, currentInstruction, m_callLinkInfoIndex++); +} + +void JIT::emit_op_construct_varargs(Instruction* currentInstruction) +{ + compileOpCall(op_construct_varargs, currentInstruction, m_callLinkInfoIndex++); +} + void JIT::emit_op_construct(Instruction* currentInstruction) { compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++); } -void JIT::compileLoadVarargs(Instruction* instruction) +void JIT::compileSetupVarargsFrame(OpcodeID opcode, Instruction* instruction, CallLinkInfo* info) { int thisValue = instruction[3].u.operand; int arguments = instruction[4].u.operand; int firstFreeRegister = instruction[5].u.operand; - - JumpList slowCase; - JumpList end; - bool canOptimize = m_codeBlock->usesArguments() - && VirtualRegister(arguments) == m_codeBlock->argumentsRegister() - && !m_codeBlock->symbolTable()->slowArguments(); - - if (canOptimize) { - emitLoadTag(arguments, regT1); - slowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag))); - - load32(payloadFor(JSStack::ArgumentCount), regT2); - slowCase.append(branch32(Above, regT2, TrustedImm32(Arguments::MaxArguments + 1))); - // regT2: argumentCountIncludingThis - - move(regT2, regT3); - neg32(regT3); - add32(TrustedImm32(firstFreeRegister - JSStack::CallFrameHeaderSize), regT3); - lshift32(TrustedImm32(3), regT3); - addPtr(callFrameRegister, regT3); - // regT3: newCallFrame - - slowCase.append(branchPtr(Above, AbsoluteAddress(m_vm->addressOfJSStackLimit()), regT3)); - - // Initialize ArgumentCount. - store32(regT2, payloadFor(JSStack::ArgumentCount, regT3)); - - // Initialize 'this'. - emitLoad(thisValue, regT1, regT0); - store32(regT0, Address(regT3, OBJECT_OFFSETOF(JSValue, u.asBits.payload) + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); - store32(regT1, Address(regT3, OBJECT_OFFSETOF(JSValue, u.asBits.tag) + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); - - // Copy arguments. - end.append(branchSub32(Zero, TrustedImm32(1), regT2)); - // regT2: argumentCount; - - Label copyLoop = label(); - load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT0); - load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT1); - store32(regT0, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); - store32(regT1, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); - branchSub32(NonZero, TrustedImm32(1), regT2).linkTo(copyLoop, this); - - end.append(jump()); - } - - if (canOptimize) - slowCase.link(this); + int firstVarArgOffset = instruction[6].u.operand; emitLoad(arguments, regT1, regT0); - callOperation(operationSizeAndAllocFrameForVarargs, regT1, regT0, firstFreeRegister); - move(returnValueGPR, regT5); - emitLoad(thisValue, regT1, regT0); - emitLoad(arguments, regT3, regT2); - callOperation(operationLoadVarargs, regT5, regT1, regT0, regT3, regT2); - move(returnValueGPR, regT3); - - if (canOptimize) - end.link(this); + Z_JITOperation_EJZZ sizeOperation; + if (opcode == op_tail_call_forward_arguments) + sizeOperation = operationSizeFrameForForwardArguments; + else + sizeOperation = operationSizeFrameForVarargs; + callOperation(sizeOperation, regT1, regT0, -firstFreeRegister, firstVarArgOffset); + move(TrustedImm32(-firstFreeRegister), regT1); + emitSetVarargsFrame(*this, returnValueGPR, false, regT1, regT1); + addPtr(TrustedImm32(-(sizeof(CallerFrameAndPC) + WTF::roundUpToMultipleOf(stackAlignmentBytes(), 6 * sizeof(void*)))), regT1, stackPointerRegister); + emitLoad(arguments, regT2, regT4); + F_JITOperation_EFJZZ setupOperation; + if (opcode == op_tail_call_forward_arguments) + setupOperation = operationSetupForwardArgumentsFrame; + else + setupOperation = operationSetupVarargsFrame; + callOperation(setupOperation, regT1, regT2, regT4, firstVarArgOffset, regT0); + move(returnValueGPR, regT1); + + // Profile the argument count. + load32(Address(regT1, CallFrameSlot::argumentCount * static_cast<int>(sizeof(Register)) + PayloadOffset), regT2); + load32(info->addressOfMaxNumArguments(), regT0); + Jump notBiggest = branch32(Above, regT0, regT2); + store32(regT2, info->addressOfMaxNumArguments()); + notBiggest.link(this); + + // Initialize 'this'. + emitLoad(thisValue, regT2, regT0); + store32(regT0, Address(regT1, PayloadOffset + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); + store32(regT2, Address(regT1, TagOffset + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))))); + + addPtr(TrustedImm32(sizeof(CallerFrameAndPC)), regT1, stackPointerRegister); } void JIT::compileCallEval(Instruction* instruction) { - callOperationWithCallFrameRollbackOnException(operationCallEval); + addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1); + storePtr(callFrameRegister, Address(regT1, CallFrame::callerFrameOffset())); + + addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister); + + callOperation(operationCallEval, regT1); + addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag))); - emitGetCallerFrameFromCallFrameHeaderPtr(callFrameRegister); sampleCodeBlock(m_codeBlock); @@ -209,10 +202,23 @@ void JIT::compileCallEval(Instruction* instruction) void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter) { + CallLinkInfo* info = m_codeBlock->addCallLinkInfo(); + info->setUpCall(CallLinkInfo::Call, CodeOrigin(m_bytecodeOffset), regT0); + linkSlowCase(iter); - emitLoad(JSStack::Callee, regT1, regT0); - emitNakedCall(m_vm->getCTIStub(virtualCallThunkGenerator).code()); + int registerOffset = -instruction[4].u.operand; + + addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister); + + move(TrustedImmPtr(info), regT2); + + emitLoad(CallFrameSlot::callee, regT1, regT0); + MacroAssemblerCodeRef virtualThunk = virtualThunkFor(m_vm, *info); + info->setSlowStub(createJITStubRoutine(virtualThunk, *m_vm, nullptr, true)); + emitNakedCall(virtualThunk.code()); + addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister); + checkStackPointerAlignment(); sampleCodeBlock(m_codeBlock); @@ -228,17 +234,18 @@ void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned ca - Initializes ArgumentCount; CallerFrame; Callee. For a JS call: - - Caller initializes ScopeChain. - Callee initializes ReturnPC; CodeBlock. - Callee restores callFrameRegister before return. For a non-JS call: - - Caller initializes ScopeChain; ReturnPC; CodeBlock. + - Caller initializes ReturnPC; CodeBlock. - Caller restores callFrameRegister after return. */ - - if (opcodeID == op_call_varargs) - compileLoadVarargs(instruction); + CallLinkInfo* info = nullptr; + if (opcodeID != op_call_eval) + info = m_codeBlock->addCallLinkInfo(); + if (opcodeID == op_call_varargs || opcodeID == op_construct_varargs || opcodeID == op_tail_call_varargs || opcodeID == op_tail_call_forward_arguments) + compileSetupVarargsFrame(opcodeID, instruction, info); else { int argCount = instruction[3].u.operand; int registerOffset = -instruction[4].u.operand; @@ -246,44 +253,55 @@ void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned ca if (opcodeID == op_call && shouldEmitProfiling()) { emitLoad(registerOffset + CallFrame::argumentOffsetIncludingThis(0), regT0, regT1); Jump done = branch32(NotEqual, regT0, TrustedImm32(JSValue::CellTag)); - loadPtr(Address(regT1, JSCell::structureOffset()), regT1); - storePtr(regT1, instruction[6].u.arrayProfile->addressOfLastSeenStructure()); + loadPtr(Address(regT1, JSCell::structureIDOffset()), regT1); + storePtr(regT1, instruction[OPCODE_LENGTH(op_call) - 2].u.arrayProfile->addressOfLastSeenStructureID()); done.link(this); } - addPtr(TrustedImm32(registerOffset * sizeof(Register)), callFrameRegister, regT3); + addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister); - store32(TrustedImm32(argCount), payloadFor(JSStack::ArgumentCount, regT3)); - } // regT3 holds newCallFrame with ArgumentCount initialized. + store32(TrustedImm32(argCount), Address(stackPointerRegister, CallFrameSlot::argumentCount * static_cast<int>(sizeof(Register)) + PayloadOffset - sizeof(CallerFrameAndPC))); + } // SP holds newCallFrame + sizeof(CallerFrameAndPC), with ArgumentCount initialized. - uint32_t locationBits = CallFrame::Location::encodeAsBytecodeInstruction(instruction); - store32(TrustedImm32(locationBits), tagFor(JSStack::ArgumentCount, callFrameRegister)); + uint32_t locationBits = CallSiteIndex(instruction).bits(); + store32(TrustedImm32(locationBits), tagFor(CallFrameSlot::argumentCount, callFrameRegister)); emitLoad(callee, regT1, regT0); // regT1, regT0 holds callee. - storePtr(callFrameRegister, Address(regT3, CallFrame::callerFrameOffset())); - emitStore(JSStack::Callee, regT1, regT0, regT3); - move(regT3, callFrameRegister); + store32(regT0, Address(stackPointerRegister, CallFrameSlot::callee * static_cast<int>(sizeof(Register)) + PayloadOffset - sizeof(CallerFrameAndPC))); + store32(regT1, Address(stackPointerRegister, CallFrameSlot::callee * static_cast<int>(sizeof(Register)) + TagOffset - sizeof(CallerFrameAndPC))); if (opcodeID == op_call_eval) { compileCallEval(instruction); return; } + if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs) + emitRestoreCalleeSaves(); + + addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag))); + DataLabelPtr addressOfLinkedFunctionCheck; Jump slowCase = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0)); addSlowCase(slowCase); - addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag))); - ASSERT(m_callStructureStubCompilationInfo.size() == callLinkInfoIndex); - m_callStructureStubCompilationInfo.append(StructureStubCompilationInfo()); - m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck; - m_callStructureStubCompilationInfo[callLinkInfoIndex].callType = CallLinkInfo::callTypeFor(opcodeID); - m_callStructureStubCompilationInfo[callLinkInfoIndex].bytecodeIndex = m_bytecodeOffset; + ASSERT(m_callCompilationInfo.size() == callLinkInfoIndex); + info->setUpCall(CallLinkInfo::callTypeFor(opcodeID), CodeOrigin(m_bytecodeOffset), regT0); + m_callCompilationInfo.append(CallCompilationInfo()); + m_callCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck; + m_callCompilationInfo[callLinkInfoIndex].callLinkInfo = info; - loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scope)), regT1); - emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain); - m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall(); + checkStackPointerAlignment(); + if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs || opcodeID == op_tail_call_forward_arguments) { + prepareForTailCallSlow(); + m_callCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedTailCall(); + return; + } + + m_callCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall(); + + addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister); + checkStackPointerAlignment(); sampleCodeBlock(m_codeBlock); emitPutCallResult(instruction); @@ -299,56 +317,23 @@ void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction* instruction, Vec linkSlowCase(iter); linkSlowCase(iter); - m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_vm->getCTIStub(linkConstructThunkGenerator).code() : m_vm->getCTIStub(linkCallThunkGenerator).code()); + move(TrustedImmPtr(m_callCompilationInfo[callLinkInfoIndex].callLinkInfo), regT2); - sampleCodeBlock(m_codeBlock); - emitPutCallResult(instruction); -} + if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs) + emitRestoreCalleeSaves(); -void JIT::privateCompileClosureCall(CallLinkInfo* callLinkInfo, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr) -{ - JumpList slowCases; + m_callCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_vm->getCTIStub(linkCallThunkGenerator).code()); - slowCases.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag))); - slowCases.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(expectedStructure))); - slowCases.append(branchPtr(NotEqual, Address(regT0, JSFunction::offsetOfExecutable()), TrustedImmPtr(expectedExecutable))); - - loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT1); - emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain); - - Call call = nearCall(); - Jump done = jump(); - - slowCases.link(this); - move(TrustedImmPtr(callLinkInfo->callReturnLocation.executableAddress()), regT2); - restoreReturnAddressBeforeReturn(regT2); - Jump slow = jump(); - - LinkBuffer patchBuffer(*m_vm, this, m_codeBlock); - - patchBuffer.link(call, FunctionPtr(codePtr.executableAddress())); - patchBuffer.link(done, callLinkInfo->hotPathOther.labelAtOffset(0)); - patchBuffer.link(slow, CodeLocationLabel(m_vm->getCTIStub(virtualCallThunkGenerator).code())); - - RefPtr<ClosureCallStubRoutine> stubRoutine = adoptRef(new ClosureCallStubRoutine( - FINALIZE_CODE( - patchBuffer, - ("Baseline closure call stub for %s, return point %p, target %p (%s)", - toCString(*m_codeBlock).data(), - callLinkInfo->hotPathOther.labelAtOffset(0).executableAddress(), - codePtr.executableAddress(), - toCString(pointerDump(calleeCodeBlock)).data())), - *m_vm, m_codeBlock->ownerExecutable(), expectedStructure, expectedExecutable, - callLinkInfo->codeOrigin)); - - RepatchBuffer repatchBuffer(m_codeBlock); - - repatchBuffer.replaceWithJump( - RepatchBuffer::startOfBranchPtrWithPatchOnRegister(callLinkInfo->hotPathBegin), - CodeLocationLabel(stubRoutine->code().code())); - repatchBuffer.relink(callLinkInfo->callReturnLocation, m_vm->getCTIStub(virtualCallThunkGenerator).code()); - - callLinkInfo->stub = stubRoutine.release(); + if (opcodeID == op_tail_call || opcodeID == op_tail_call_varargs) { + abortWithReason(JITDidReturnFromTailCall); + return; + } + + addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister); + checkStackPointerAlignment(); + + sampleCodeBlock(m_codeBlock); + emitPutCallResult(instruction); } } // namespace JSC |