/*
- * Copyright (C) 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#if USE(JSVALUE32_64)
#include "JIT.h"
+#include "Arguments.h"
#include "CodeBlock.h"
#include "Interpreter.h"
-#include "JITInlineMethods.h"
-#include "JITStubCall.h"
+#include "JITInlines.h"
#include "JSArray.h"
#include "JSFunction.h"
+#include "JSCInlines.h"
+#include "LinkBuffer.h"
+#include "RepatchBuffer.h"
#include "ResultType.h"
#include "SamplingTool.h"
+#include "StackAlignment.h"
+#include <wtf/StringPrintStream.h>
-#ifndef NDEBUG
-#include <stdio.h>
-#endif
-
-using namespace std;
namespace JSC {
-void JIT::compileOpCallInitializeCallFrame()
-{
- // regT0 holds callee, regT1 holds argCount
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT3); // scopeChain
- emitPutIntToCallFrameHeader(regT1, RegisterFile::ArgumentCount);
- emitPutCellToCallFrameHeader(regT0, RegisterFile::Callee);
- emitPutCellToCallFrameHeader(regT3, RegisterFile::ScopeChain);
-}
-
-void JIT::emit_op_call_put_result(Instruction* instruction)
+void JIT::emitPutCallResult(Instruction* instruction)
{
int dst = instruction[1].u.operand;
+ emitValueProfilingSite();
emitStore(dst, regT1, regT0);
}
-void JIT::compileOpCallVarargs(Instruction* instruction)
-{
- int callee = instruction[1].u.operand;
- int argCountRegister = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
-
- emitLoad(callee, regT1, regT0);
- emitLoadPayload(argCountRegister, regT2); // argCount
- addPtr(Imm32(registerOffset), regT2, regT3); // registerOffset
-
- emitJumpSlowCaseIfNotJSCell(callee, regT1);
- addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
-
- // Speculatively roll the callframe, assuming argCount will match the arity.
- mul32(TrustedImm32(sizeof(Register)), regT3, regT3);
- addPtr(callFrameRegister, regT3);
- store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame, regT3));
- storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame, regT3));
- move(regT3, callFrameRegister);
-
- move(regT2, regT1); // argCount
-
- emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
-
- sampleCodeBlock(m_codeBlock);
-}
-
-void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- int callee = instruction[1].u.operand;
-
- linkSlowCaseIfNotJSCell(iter, callee);
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_call_NotJSFunction);
- stubCall.addArgument(regT1, regT0);
- stubCall.addArgument(regT3);
- stubCall.addArgument(regT2);
- stubCall.call();
-
- sampleCodeBlock(m_codeBlock);
-}
-
void JIT::emit_op_ret(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
emitLoad(dst, regT1, regT0);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- restoreReturnAddressBeforeReturn(regT2);
+ checkStackPointerAlignment();
+ emitFunctionEpilogue();
ret();
}
emitLoad(result, regT1, regT0);
Jump notJSCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- Jump notObject = branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType));
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ Jump notObject = emitJumpIfCellNotObject(regT0);
- restoreReturnAddressBeforeReturn(regT2);
+ checkStackPointerAlignment();
+ emitFunctionEpilogue();
ret();
notJSCell.link(this);
notObject.link(this);
emitLoad(thisReg, regT1, regT0);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
-
- restoreReturnAddressBeforeReturn(regT2);
+ checkStackPointerAlignment();
+ emitFunctionEpilogue();
ret();
}
void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call);
+ compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call_eval);
+ compileOpCallSlowCase(op_call_eval, currentInstruction, iter, m_callLinkInfoIndex);
}
-
+
void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallVarargsSlowCase(currentInstruction, iter);
+ compileOpCallSlowCase(op_call_varargs, 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(currentInstruction, iter, m_callLinkInfoIndex++, op_construct);
+ compileOpCallSlowCase(op_construct, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emit_op_call(Instruction* currentInstruction)
void JIT::emit_op_call_eval(Instruction* currentInstruction)
{
- compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex++);
+ compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex);
}
void JIT::emit_op_call_varargs(Instruction* currentInstruction)
{
- compileOpCallVarargs(currentInstruction);
+ compileOpCall(op_call_varargs, 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++);
}
-#if !ENABLE(JIT_OPTIMIZE_CALL)
+void JIT::compileLoadVarargs(Instruction* instruction)
+{
+ int thisValue = instruction[3].u.operand;
+ int arguments = instruction[4].u.operand;
+ int firstFreeRegister = instruction[5].u.operand;
+ int firstVarArgOffset = instruction[6].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);
+ if (firstVarArgOffset) {
+ Jump sufficientArguments = branch32(GreaterThan, regT2, TrustedImm32(firstVarArgOffset + 1));
+ move(TrustedImm32(1), regT2);
+ Jump endVarArgs = jump();
+ sufficientArguments.link(this);
+ sub32(TrustedImm32(firstVarArgOffset), regT2);
+ endVarArgs.link(this);
+ }
+ slowCase.append(branch32(Above, regT2, TrustedImm32(Arguments::MaxArguments + 1)));
+ // regT2: argumentCountIncludingThis
+
+ move(regT2, regT3);
+ addPtr(TrustedImm32(-firstFreeRegister + JSStack::CallFrameHeaderSize), regT3);
+ // regT1 now has the required frame size in Register units
+ // Round regT1 to next multiple of stackAlignmentRegisters()
+ addPtr(TrustedImm32(stackAlignmentRegisters() - 1), regT3);
+ andPtr(TrustedImm32(~(stackAlignmentRegisters() - 1)), regT3);
+ neg32(regT3);
+ lshift32(TrustedImm32(3), regT3);
+ addPtr(callFrameRegister, regT3);
+ // regT3: newCallFrame
+
+ slowCase.append(branchPtr(Above, AbsoluteAddress(m_vm->addressOfStackLimit()), 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() + firstVarArgOffset) * static_cast<int>(sizeof(Register)))), regT0);
+ load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +((CallFrame::thisArgumentOffset() + firstVarArgOffset) * 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());
+ }
-/* ------------------------------ BEGIN: !ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+ if (canOptimize)
+ slowCase.link(this);
-void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned)
-{
- int callee = instruction[1].u.operand;
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
+ emitLoad(arguments, regT1, regT0);
+ callOperation(operationSizeFrameForVarargs, regT1, regT0, firstFreeRegister, firstVarArgOffset);
+ addPtr(TrustedImm32(-sizeof(CallerFrameAndPC)), returnValueGPR, stackPointerRegister);
+ emitLoad(thisValue, regT1, regT4);
+ emitLoad(arguments, regT3, regT2);
+ callOperation(operationLoadVarargs, returnValueGPR, regT1, regT4, regT3, regT2, firstVarArgOffset);
+ move(returnValueGPR, regT3);
- Jump wasEval;
- if (opcodeID == op_call_eval) {
- JITStubCall stubCall(this, cti_op_call_eval);
- stubCall.addArgument(callee);
- stubCall.addArgument(JIT::Imm32(registerOffset));
- stubCall.addArgument(JIT::Imm32(argCount));
- stubCall.call();
- wasEval = branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag));
- }
+ if (canOptimize)
+ end.link(this);
+
+ addPtr(TrustedImm32(sizeof(CallerFrameAndPC)), regT3, stackPointerRegister);
+}
- emitLoad(callee, regT1, regT0);
+void JIT::compileCallEval(Instruction* instruction)
+{
+ addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
- emitJumpSlowCaseIfNotJSCell(callee, regT1);
- addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
+ callOperationNoExceptionCheck(operationCallEval, regT1);
- // Speculatively roll the callframe, assuming argCount will match the arity.
- store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
- storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
- addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
- move(TrustedImm32(argCount), regT1);
+ Jump noException = emitExceptionCheck(InvertedExceptionCheck);
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ exceptionCheck(jump());
- emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstruct() : m_globalData->jitStubs->ctiVirtualCall());
+ noException.link(this);
+ addSlowCase(branch32(Equal, regT1, TrustedImm32(JSValue::EmptyValueTag)));
- if (opcodeID == op_call_eval)
- wasEval.link(this);
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
-void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned, OpcodeID opcodeID)
+void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
- int callee = instruction[1].u.operand;
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
-
- linkSlowCaseIfNotJSCell(iter, callee);
linkSlowCase(iter);
- JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
- stubCall.addArgument(callee);
- stubCall.addArgument(JIT::Imm32(registerOffset));
- stubCall.addArgument(JIT::Imm32(argCount));
- stubCall.call();
+ loadPtr(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT0);
+ loadPtr(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT1);
+ move(TrustedImmPtr(&CallLinkInfo::dummy()), regT2);
+
+ emitLoad(JSStack::Callee, regT1, regT0);
+ emitNakedCall(m_vm->getCTIStub(virtualCallThunkGenerator).code());
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
-#else // !ENABLE(JIT_OPTIMIZE_CALL)
-
-/* ------------------------------ BEGIN: ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
-
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
- int callee = instruction[1].u.operand;
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
+ int callee = instruction[2].u.operand;
- Jump wasEval;
- if (opcodeID == op_call_eval) {
- JITStubCall stubCall(this, cti_op_call_eval);
- stubCall.addArgument(callee);
- stubCall.addArgument(JIT::Imm32(registerOffset));
- stubCall.addArgument(JIT::Imm32(argCount));
- stubCall.call();
- wasEval = branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag));
- }
-
- emitLoad(callee, regT1, regT0);
+ /* Caller always:
+ - Updates callFrameRegister to callee callFrame.
+ - Initializes ArgumentCount; CallerFrame; Callee.
- DataLabelPtr addressOfLinkedFunctionCheck;
+ For a JS call:
+ - Caller initializes ScopeChain.
+ - Callee initializes ReturnPC; CodeBlock.
+ - Callee restores callFrameRegister before return.
- BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+ For a non-JS call:
+ - Caller initializes ScopeChain; ReturnPC; CodeBlock.
+ - Caller restores callFrameRegister after return.
+ */
+
+ if (opcodeID == op_call_varargs || opcodeID == op_construct_varargs)
+ compileLoadVarargs(instruction);
+ else {
+ int argCount = instruction[3].u.operand;
+ int registerOffset = -instruction[4].u.operand;
+
+ if (opcodeID == op_call && shouldEmitProfiling()) {
+ emitLoad(registerOffset + CallFrame::argumentOffsetIncludingThis(0), regT0, regT1);
+ Jump done = branch32(NotEqual, regT0, TrustedImm32(JSValue::CellTag));
+ 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) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);
- Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
+ store32(TrustedImm32(argCount), Address(stackPointerRegister, JSStack::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));
+ emitLoad(callee, regT1, regT0); // regT1, regT0 holds callee.
- END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+ store32(regT0, Address(stackPointerRegister, JSStack::Callee * static_cast<int>(sizeof(Register)) + PayloadOffset - sizeof(CallerFrameAndPC)));
+ store32(regT1, Address(stackPointerRegister, JSStack::Callee * static_cast<int>(sizeof(Register)) + TagOffset - sizeof(CallerFrameAndPC)));
- addSlowCase(jumpToSlow);
- ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow), patchOffsetOpCallCompareToJump);
- m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
- m_callStructureStubCompilationInfo[callLinkInfoIndex].isCall = opcodeID != op_construct;
+ if (opcodeID == op_call_eval) {
+ compileCallEval(instruction);
+ return;
+ }
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- // The following is the fast case, only used whan a callee can be linked.
+ DataLabelPtr addressOfLinkedFunctionCheck;
+ Jump slowCase = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
- // Fast version of stack frame initialization, directly relative to edi.
- // Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT2);
+ addSlowCase(slowCase);
- store32(TrustedImm32(JSValue::Int32Tag), tagFor(registerOffset + RegisterFile::ArgumentCount));
- store32(Imm32(argCount), payloadFor(registerOffset + RegisterFile::ArgumentCount));
- storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
- emitStore(registerOffset + RegisterFile::Callee, regT1, regT0);
- store32(TrustedImm32(JSValue::CellTag), tagFor(registerOffset + RegisterFile::ScopeChain));
- store32(regT2, payloadFor(registerOffset + RegisterFile::ScopeChain));
- addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
+ ASSERT(m_callCompilationInfo.size() == callLinkInfoIndex);
+ CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
+ info->callType = CallLinkInfo::callTypeFor(opcodeID);
+ info->codeOrigin = CodeOrigin(m_bytecodeOffset);
+ info->calleeGPR = regT0;
+ m_callCompilationInfo.append(CallCompilationInfo());
+ m_callCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
+ m_callCompilationInfo[callLinkInfoIndex].callLinkInfo = info;
- // Call to the callee
- m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
-
- if (opcodeID == op_call_eval)
- wasEval.link(this);
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scope)), regT2);
+ store32(regT2, Address(MacroAssembler::stackPointerRegister, JSStack::ScopeChain * sizeof(Register) + PayloadOffset - sizeof(CallerFrameAndPC)));
+ store32(TrustedImm32(JSValue::CellTag), Address(stackPointerRegister, JSStack::ScopeChain * sizeof(Register) + TagOffset - sizeof(CallerFrameAndPC)));
+
+ checkStackPointerAlignment();
+ m_callCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
+
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+ emitPutCallResult(instruction);
}
-void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID)
+void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
{
- int callee = instruction[1].u.operand;
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
+ if (opcodeID == op_call_eval) {
+ compileCallEvalSlowCase(instruction, iter);
+ return;
+ }
linkSlowCase(iter);
linkSlowCase(iter);
- // Fast check for JS function.
- Jump callLinkFailNotObject = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- Jump callLinkFailNotJSFunction = branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr));
-
- // Speculatively roll the callframe, assuming argCount will match the arity.
- store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
- storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
- addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
- move(Imm32(argCount), regT1);
-
- m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstructLink() : m_globalData->jitStubs->ctiVirtualCallLink());
-
- // Done! - return back to the hot path.
- ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_eval));
- ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_construct));
- emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_call));
-
- // This handles host functions
- callLinkFailNotObject.link(this);
- callLinkFailNotJSFunction.link(this);
+ ThunkGenerator generator = linkThunkGeneratorFor(
+ (opcodeID == op_construct || opcodeID == op_construct_varargs) ? CodeForConstruct : CodeForCall,
+ RegisterPreservationNotRequired);
+
+ move(TrustedImmPtr(m_callCompilationInfo[callLinkInfoIndex].callLinkInfo), regT2);
+ m_callCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_vm->getCTIStub(generator).code());
- JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
- stubCall.addArgument(callee);
- stubCall.addArgument(JIT::Imm32(registerOffset));
- stubCall.addArgument(JIT::Imm32(argCount));
- stubCall.call();
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+ emitPutCallResult(instruction);
}
-/* ------------------------------ END: !ENABLE / ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+void JIT::privateCompileClosureCall(CallLinkInfo* callLinkInfo, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr)
+{
+ JumpList slowCases;
-#endif // !ENABLE(JIT_OPTIMIZE_CALL)
+ slowCases.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
+ slowCases.append(branchPtr(NotEqual, Address(regT0, JSCell::structureIDOffset()), 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();
+}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff