/*
- * Copyright (C) 2008, 2013 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
#include "Arguments.h"
#include "CodeBlock.h"
#include "JITInlines.h"
-#include "JITStubCall.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Interpreter.h"
-#include "Operations.h"
+#include "JSCInlines.h"
+#include "LinkBuffer.h"
#include "RepatchBuffer.h"
#include "ResultType.h"
#include "SamplingTool.h"
+#include "StackAlignment.h"
#include "ThunkGenerators.h"
#include <wtf/StringPrintStream.h>
-#ifndef NDEBUG
-#include <stdio.h>
-#endif
-
-using namespace std;
namespace JSC {
-void JIT::emit_op_call_put_result(Instruction* instruction)
+void JIT::emitPutCallResult(Instruction* instruction)
{
int dst = instruction[1].u.operand;
emitValueProfilingSite();
emitPutVirtualRegister(dst);
- if (canBeOptimizedOrInlined())
- killLastResultRegister(); // Make lastResultRegister tracking simpler in the DFG.
}
void JIT::compileLoadVarargs(Instruction* instruction)
{
- int thisValue = instruction[2].u.operand;
- int arguments = instruction[3].u.operand;
- int firstFreeRegister = instruction[4].u.operand;
-
- killLastResultRegister();
+ 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()
- && arguments == m_codeBlock->argumentsRegister()
+ && arguments == m_codeBlock->argumentsRegister().offset()
&& !m_codeBlock->symbolTable()->slowArguments();
if (canOptimize) {
slowCase.append(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(JSValue()))));
emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT0);
+ if (firstVarArgOffset) {
+ Jump sufficientArguments = branch32(GreaterThan, regT0, TrustedImm32(firstVarArgOffset + 1));
+ move(TrustedImm32(1), regT0);
+ Jump endVarArgs = jump();
+ sufficientArguments.link(this);
+ sub32(TrustedImm32(firstVarArgOffset), regT0);
+ endVarArgs.link(this);
+ }
slowCase.append(branch32(Above, regT0, TrustedImm32(Arguments::MaxArguments + 1)));
// regT0: argumentCountIncludingThis
-
move(regT0, regT1);
- add32(TrustedImm32(firstFreeRegister + JSStack::CallFrameHeaderSize), regT1);
- lshift32(TrustedImm32(3), regT1);
+ add64(TrustedImm32(-firstFreeRegister + JSStack::CallFrameHeaderSize), regT1);
+ // regT1 now has the required frame size in Register units
+ // Round regT1 to next multiple of stackAlignmentRegisters()
+ add64(TrustedImm32(stackAlignmentRegisters() - 1), regT1);
+ and64(TrustedImm32(~(stackAlignmentRegisters() - 1)), regT1);
+
+ neg64(regT1);
+ lshift64(TrustedImm32(3), regT1);
addPtr(callFrameRegister, regT1);
// regT1: newCallFrame
- slowCase.append(branchPtr(Below, AbsoluteAddress(m_vm->interpreter->stack().addressOfEnd()), regT1));
+ slowCase.append(branchPtr(Above, AbsoluteAddress(m_vm->addressOfStackLimit()), regT1));
// Initialize ArgumentCount.
store32(regT0, Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
store64(regT2, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
// Copy arguments.
- neg32(regT0);
signExtend32ToPtr(regT0, regT0);
- end.append(branchAdd64(Zero, TrustedImm32(1), regT0));
- // regT0: -argumentCount
+ end.append(branchSub64(Zero, TrustedImm32(1), regT0));
+ // regT0: argumentCount
Label copyLoop = label();
- load64(BaseIndex(callFrameRegister, regT0, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT2);
+ load64(BaseIndex(callFrameRegister, regT0, TimesEight, (CallFrame::thisArgumentOffset() + firstVarArgOffset) * static_cast<int>(sizeof(Register))), regT2);
store64(regT2, BaseIndex(regT1, regT0, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
- branchAdd64(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
+ branchSub64(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
end.append(jump());
}
if (canOptimize)
slowCase.link(this);
- JITStubCall stubCall(this, cti_op_load_varargs);
- stubCall.addArgument(thisValue, regT0);
- stubCall.addArgument(arguments, regT0);
- stubCall.addArgument(Imm32(firstFreeRegister));
- stubCall.call(regT1);
+ emitGetVirtualRegister(arguments, regT1);
+ callOperation(operationSizeFrameForVarargs, regT1, firstFreeRegister, firstVarArgOffset);
+ move(returnValueGPR, stackPointerRegister);
+ emitGetVirtualRegister(thisValue, regT1);
+ emitGetVirtualRegister(arguments, regT2);
+ callOperation(operationLoadVarargs, returnValueGPR, regT1, regT2, firstVarArgOffset);
+ move(returnValueGPR, regT1);
if (canOptimize)
end.link(this);
+
+ addPtr(TrustedImm32(sizeof(CallerFrameAndPC)), regT1, stackPointerRegister);
}
-void JIT::compileCallEval()
+void JIT::compileCallEval(Instruction* instruction)
{
- JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
- stubCall.call();
+ addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
+ callOperationNoExceptionCheck(operationCallEval, regT1);
+
+ Jump noException = emitExceptionCheck(InvertedExceptionCheck);
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ exceptionCheck(jump());
+
+ noException.link(this);
addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
- emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
+
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
-void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
+void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- emitGetFromCallFrameHeader64(JSStack::Callee, regT0);
- emitNakedCall(m_vm->getCTIStub(virtualCallGenerator).code());
+ load64(Address(stackPointerRegister, sizeof(Register) * JSStack::Callee - sizeof(CallerFrameAndPC)), regT0);
+ move(TrustedImmPtr(&CallLinkInfo::dummy()), regT2);
+ emitNakedCall(m_vm->getCTIStub(virtualCallThunkGenerator).code());
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
- int callee = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
/* Caller always:
- Updates callFrameRegister to callee callFrame.
- Caller initializes ScopeChain; ReturnPC; CodeBlock.
- Caller restores callFrameRegister after return.
*/
-
- if (opcodeID == op_call_varargs)
+ COMPILE_ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_construct), call_and_construct_opcodes_must_be_same_length);
+ COMPILE_ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_varargs), call_and_call_varargs_opcodes_must_be_same_length);
+ COMPILE_ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_construct_varargs), call_and_construct_varargs_opcodes_must_be_same_length);
+ if (opcodeID == op_call_varargs || opcodeID == op_construct_varargs)
compileLoadVarargs(instruction);
else {
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
+ int argCount = instruction[3].u.operand;
+ int registerOffset = -instruction[4].u.operand;
if (opcodeID == op_call && shouldEmitProfiling()) {
emitGetVirtualRegister(registerOffset + CallFrame::argumentOffsetIncludingThis(0), regT0);
Jump done = emitJumpIfNotJSCell(regT0);
- loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
- storePtr(regT0, instruction[5].u.arrayProfile->addressOfLastSeenStructure());
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ store32(regT0, instruction[OPCODE_LENGTH(op_call) - 2].u.arrayProfile->addressOfLastSeenStructureID());
done.link(this);
}
- addPtr(TrustedImm32(registerOffset * sizeof(Register)), callFrameRegister, regT1);
- store32(TrustedImm32(argCount), Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
- } // regT1 holds newCallFrame with ArgumentCount initialized.
+ addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);
+ store32(TrustedImm32(argCount), Address(stackPointerRegister, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + PayloadOffset - sizeof(CallerFrameAndPC)));
+ } // SP holds newCallFrame + sizeof(CallerFrameAndPC), with ArgumentCount initialized.
- store32(TrustedImm32(instruction - m_codeBlock->instructions().begin()), Address(callFrameRegister, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.tag)));
+ uint32_t bytecodeOffset = instruction - m_codeBlock->instructions().begin();
+ uint32_t locationBits = CallFrame::Location::encodeAsBytecodeOffset(bytecodeOffset);
+ store32(TrustedImm32(locationBits), Address(callFrameRegister, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + TagOffset));
emitGetVirtualRegister(callee, regT0); // regT0 holds callee.
- store64(callFrameRegister, Address(regT1, JSStack::CallerFrame * static_cast<int>(sizeof(Register))));
- store64(regT0, Address(regT1, JSStack::Callee * static_cast<int>(sizeof(Register))));
- move(regT1, callFrameRegister);
+ store64(regT0, Address(stackPointerRegister, JSStack::Callee * static_cast<int>(sizeof(Register)) - sizeof(CallerFrameAndPC)));
if (opcodeID == op_call_eval) {
- compileCallEval();
+ compileCallEval(instruction);
return;
}
DataLabelPtr addressOfLinkedFunctionCheck;
- BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
Jump slowCase = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
- END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
addSlowCase(slowCase);
- 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);
+ 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;
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scope)), regT1);
- emitPutToCallFrameHeader(regT1, JSStack::ScopeChain);
- m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scope)), regT2);
+ store64(regT2, Address(MacroAssembler::stackPointerRegister, JSStack::ScopeChain * sizeof(Register) - sizeof(CallerFrameAndPC)));
+
+ m_callCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
+
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
-void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction*, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
+void JIT::compileOpCallSlowCase(OpcodeID opcodeID, Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex)
{
if (opcodeID == op_call_eval) {
- compileCallEvalSlowCase(iter);
+ compileCallEvalSlowCase(instruction, iter);
return;
}
linkSlowCase(iter);
+
+ ThunkGenerator generator = linkThunkGeneratorFor(
+ (opcodeID == op_construct || opcodeID == op_construct_varargs) ? CodeForConstruct : CodeForCall,
+ RegisterPreservationNotRequired);
- m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_vm->getCTIStub(linkConstructGenerator).code() : m_vm->getCTIStub(linkCallGenerator).code());
+ move(TrustedImmPtr(m_callCompilationInfo[callLinkInfoIndex].callLinkInfo), regT2);
+ m_callCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_vm->getCTIStub(generator).code());
+
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
void JIT::privateCompileClosureCall(CallLinkInfo* callLinkInfo, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr)
{
JumpList slowCases;
-
+
slowCases.append(branchTestPtr(NonZero, regT0, tagMaskRegister));
- slowCases.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(expectedStructure)));
+ slowCases.append(branchStructure(NotEqual, Address(regT0, JSCell::structureIDOffset()), expectedStructure));
slowCases.append(branchPtr(NotEqual, Address(regT0, JSFunction::offsetOfExecutable()), TrustedImmPtr(expectedExecutable)));
loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT1);
restoreReturnAddressBeforeReturn(regT2);
Jump slow = jump();
- LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
+ 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(virtualCallGenerator).code()));
+ patchBuffer.link(slow, CodeLocationLabel(m_vm->getCTIStub(virtualCallThunkGenerator).code()));
RefPtr<ClosureCallStubRoutine> stubRoutine = adoptRef(new ClosureCallStubRoutine(
FINALIZE_CODE(
repatchBuffer.replaceWithJump(
RepatchBuffer::startOfBranchPtrWithPatchOnRegister(callLinkInfo->hotPathBegin),
CodeLocationLabel(stubRoutine->code().code()));
- repatchBuffer.relink(callLinkInfo->callReturnLocation, m_vm->getCTIStub(virtualCallGenerator).code());
-
+ repatchBuffer.relink(callLinkInfo->callReturnLocation, m_vm->getCTIStub(virtualCallThunkGenerator).code());
+
callLinkInfo->stub = stubRoutine.release();
}
+void JIT::emit_op_call(Instruction* currentInstruction)
+{
+ compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
+}
+
+void JIT::emit_op_call_eval(Instruction* currentInstruction)
+{
+ compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex);
+}
+
+void JIT::emit_op_call_varargs(Instruction* 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++);
+}
+
+void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++);
+}
+
+void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallSlowCase(op_call_eval, currentInstruction, iter, m_callLinkInfoIndex);
+}
+
+void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& 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(op_construct, currentInstruction, iter, m_callLinkInfoIndex++);
+}
+
} // namespace JSC
#endif // USE(JSVALUE64)
projects / apple / javascriptcore.git / blobdiff