/*
- * Copyright (C) 2008 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
#if USE(JSVALUE64)
#include "JIT.h"
-#include "Arguments.h"
#include "CodeBlock.h"
-#include "JITInlineMethods.h"
-#include "JITStubCall.h"
+#include "JITInlines.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Interpreter.h"
+#include "JSCInlines.h"
+#include "LinkBuffer.h"
+#include "RepatchBuffer.h"
#include "ResultType.h"
#include "SamplingTool.h"
+#include "SetupVarargsFrame.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 (canBeOptimized())
- killLastResultRegister(); // Make lastResultRegister tracking simpler in the DFG.
}
-void JIT::compileLoadVarargs(Instruction* instruction)
+void JIT::compileSetupVarargsFrame(Instruction* instruction, CallLinkInfo* info)
{
- int thisValue = instruction[2].u.operand;
- int arguments = instruction[3].u.operand;
- int firstFreeRegister = instruction[4].u.operand;
-
- killLastResultRegister();
-
- JumpList slowCase;
- JumpList end;
- if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister()) {
- emitGetVirtualRegister(arguments, regT0);
- slowCase.append(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue()))));
-
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
- slowCase.append(branch32(Above, regT0, TrustedImm32(Arguments::MaxArguments + 1)));
- // regT0: argumentCountIncludingThis
-
- move(regT0, regT1);
- add32(TrustedImm32(firstFreeRegister + RegisterFile::CallFrameHeaderSize), regT1);
- lshift32(TrustedImm32(3), regT1);
- addPtr(callFrameRegister, regT1);
- // regT1: newCallFrame
-
- slowCase.append(branchPtr(Below, AbsoluteAddress(m_globalData->interpreter->registerFile().addressOfEnd()), regT1));
-
- // Initialize ArgumentCount.
- store32(regT0, Address(regT1, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
-
- // Initialize 'this'.
- emitGetVirtualRegister(thisValue, regT2);
- storePtr(regT2, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
-
- // Copy arguments.
- neg32(regT0);
- signExtend32ToPtr(regT0, regT0);
- end.append(branchAddPtr(Zero, TrustedImm32(1), regT0));
- // regT0: -argumentCount
-
- Label copyLoop = label();
- loadPtr(BaseIndex(callFrameRegister, regT0, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT2);
- storePtr(regT2, BaseIndex(regT1, regT0, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
- branchAddPtr(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
+ int thisValue = instruction[3].u.operand;
+ int arguments = instruction[4].u.operand;
+ int firstFreeRegister = instruction[5].u.operand;
+ int firstVarArgOffset = instruction[6].u.operand;
+
+ emitGetVirtualRegister(arguments, regT1);
+ callOperation(operationSizeFrameForVarargs, regT1, -firstFreeRegister, firstVarArgOffset);
+ move(TrustedImm32(-firstFreeRegister), regT1);
+ emitSetVarargsFrame(*this, returnValueGPR, false, regT1, regT1);
+ addPtr(TrustedImm32(-(sizeof(CallerFrameAndPC) + WTF::roundUpToMultipleOf(stackAlignmentBytes(), 5 * sizeof(void*)))), regT1, stackPointerRegister);
+ emitGetVirtualRegister(arguments, regT2);
+ callOperation(operationSetupVarargsFrame, regT1, regT2, firstVarArgOffset, regT0);
+ move(returnValueGPR, regT1);
+
+ // Profile the argument count.
+ load32(Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + PayloadOffset), regT2);
+ load8(info->addressOfMaxNumArguments(), regT0);
+ Jump notBiggest = branch32(Above, regT0, regT2);
+ Jump notSaturated = branch32(BelowOrEqual, regT2, TrustedImm32(255));
+ move(TrustedImm32(255), regT2);
+ notSaturated.link(this);
+ store8(regT2, info->addressOfMaxNumArguments());
+ notBiggest.link(this);
+
+ // Initialize 'this'.
+ emitGetVirtualRegister(thisValue, regT0);
+ store64(regT0, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
- end.append(jump());
- }
+ addPtr(TrustedImm32(sizeof(CallerFrameAndPC)), regT1, stackPointerRegister);
+}
- if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
- slowCase.link(this);
+void JIT::compileCallEval(Instruction* instruction)
+{
+ addPtr(TrustedImm32(-static_cast<ptrdiff_t>(sizeof(CallerFrameAndPC))), stackPointerRegister, regT1);
+ storePtr(callFrameRegister, Address(regT1, CallFrame::callerFrameOffset()));
- JITStubCall stubCall(this, cti_op_load_varargs);
- stubCall.addArgument(thisValue, regT0);
- stubCall.addArgument(arguments, regT0);
- stubCall.addArgument(Imm32(firstFreeRegister));
- stubCall.call(regT1);
+ addPtr(TrustedImm32(stackPointerOffsetFor(m_codeBlock) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+ checkStackPointerAlignment();
- if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
- end.link(this);
-}
+ callOperation(operationCallEval, regT1);
-void JIT::compileCallEval()
-{
- JITStubCall stubCall(this, cti_op_call_eval); // Initializes ScopeChain; ReturnPC; CodeBlock.
- stubCall.call();
- addSlowCase(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(JSValue()))));
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ addSlowCase(branch64(Equal, regT0, TrustedImm64(JSValue::encode(JSValue()))));
sampleCodeBlock(m_codeBlock);
+
+ emitPutCallResult(instruction);
}
-void JIT::compileCallEvalSlowCase(Vector<SlowCaseEntry>::iterator& iter)
+void JIT::compileCallEvalSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
+ int registerOffset = -instruction[4].u.operand;
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
- emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
+ addPtr(TrustedImm32(registerOffset * sizeof(Register) + sizeof(CallerFrameAndPC)), callFrameRegister, stackPointerRegister);
+
+ 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;
+ CallLinkInfo* info = m_codeBlock->addCallLinkInfo();
+
+ int callee = instruction[2].u.operand;
/* Caller always:
- Updates callFrameRegister to callee callFrame.
- 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);
+ 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)
+ compileSetupVarargsFrame(instruction, info);
else {
- int argCount = instruction[2].u.operand;
- int registerOffset = instruction[3].u.operand;
-
- addPtr(TrustedImm32(registerOffset * sizeof(Register)), callFrameRegister, regT1);
- store32(TrustedImm32(argCount), Address(regT1, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
- } // regT1 holds newCallFrame with ArgumentCount initialized.
+ 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);
+ 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) + 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, RegisterFile::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.
- storePtr(callFrameRegister, Address(regT1, RegisterFile::CallerFrame * static_cast<int>(sizeof(Register))));
- storePtr(regT0, Address(regT1, RegisterFile::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(JSValue::encode(JSValue())));
- END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+ Jump slowCase = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
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);
+ 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_scopeChain)), regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
+ 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_globalData->jitStubs->ctiVirtualConstructLink() : m_globalData->jitStubs->ctiVirtualCallLink());
+ 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::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
projects / apple / javascriptcore.git / blobdiff