#include "config.h"
#if ENABLE(JIT)
#include "JIT.h"
#include "Arguments.h"
#include "CopiedSpaceInlineMethods.h"
#include "Heap.h"
#include "JITInlineMethods.h"
#include "JITStubCall.h"
#include "JSArray.h"
#include "JSCell.h"
#include "JSFunction.h"
#include "JSPropertyNameIterator.h"
#include "LinkBuffer.h"
namespace JSC {
#if USE(JSVALUE64)
PassRefPtr<ExecutableMemoryHandle> JIT::privateCompileCTIMachineTrampolines(JSGlobalData* globalData, TrampolineStructure *trampolines)
{
Label stringLengthBegin = align();
Jump string_failureCases1 = emitJumpIfNotJSCell(regT0);
Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info));
load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_length)), regT0);
Jump string_failureCases3 = branch32(LessThan, regT0, TrustedImm32(0));
emitFastArithIntToImmNoCheck(regT0, regT0);
ret();
COMPILE_ASSERT(sizeof(CodeType) == 4, CodeTypeEnumMustBe32Bit);
JumpList callSlowCase;
JumpList constructSlowCase;
Label virtualCallLinkBegin = align();
callSlowCase.append(emitJumpIfNotJSCell(regT0));
callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3);
emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callLazyLinkCall = call();
restoreReturnAddressBeforeReturn(regT3);
jump(regT0);
Label virtualConstructLinkBegin = align();
constructSlowCase.append(emitJumpIfNotJSCell(regT0));
constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3);
emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callLazyLinkConstruct = call();
restoreReturnAddressBeforeReturn(regT3);
jump(regT0);
Label virtualCallBegin = align();
callSlowCase.append(emitJumpIfNotJSCell(regT0));
callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
Jump hasCodeBlock1 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForCall)), TrustedImm32(0));
preserveReturnAddressAfterCall(regT3);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callCompileCall = call();
restoreReturnAddressBeforeReturn(regT3);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
hasCodeBlock1.link(this);
loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForCallWithArityCheck)), regT0);
jump(regT0);
Label virtualConstructBegin = align();
constructSlowCase.append(emitJumpIfNotJSCell(regT0));
constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
Jump hasCodeBlock2 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForConstruct)), TrustedImm32(0));
preserveReturnAddressAfterCall(regT3);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callCompileConstruct = call();
restoreReturnAddressBeforeReturn(regT3);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
hasCodeBlock2.link(this);
loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForConstructWithArityCheck)), regT0);
jump(regT0);
callSlowCase.link(this);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3);
emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callCallNotJSFunction = call();
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT3);
ret();
constructSlowCase.link(this);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3);
emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
Call callConstructNotJSFunction = call();
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT3);
ret();
Label nativeCallThunk = privateCompileCTINativeCall(globalData);
Label nativeConstructThunk = privateCompileCTINativeCall(globalData, true);
Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
LinkBuffer patchBuffer(*m_globalData, this, GLOBAL_THUNK_ID);
patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
patchBuffer.link(callLazyLinkConstruct, FunctionPtr(cti_vm_lazyLinkConstruct));
patchBuffer.link(callCompileCall, FunctionPtr(cti_op_call_jitCompile));
patchBuffer.link(callCompileConstruct, FunctionPtr(cti_op_construct_jitCompile));
patchBuffer.link(callCallNotJSFunction, FunctionPtr(cti_op_call_NotJSFunction));
patchBuffer.link(callConstructNotJSFunction, FunctionPtr(cti_op_construct_NotJSConstruct));
CodeRef finalCode = patchBuffer.finalizeCode();
RefPtr<ExecutableMemoryHandle> executableMemory = finalCode.executableMemory();
trampolines->ctiVirtualCallLink = patchBuffer.trampolineAt(virtualCallLinkBegin);
trampolines->ctiVirtualConstructLink = patchBuffer.trampolineAt(virtualConstructLinkBegin);
trampolines->ctiVirtualCall = patchBuffer.trampolineAt(virtualCallBegin);
trampolines->ctiVirtualConstruct = patchBuffer.trampolineAt(virtualConstructBegin);
trampolines->ctiNativeCall = patchBuffer.trampolineAt(nativeCallThunk);
trampolines->ctiNativeConstruct = patchBuffer.trampolineAt(nativeConstructThunk);
trampolines->ctiStringLengthTrampoline = patchBuffer.trampolineAt(stringLengthBegin);
return executableMemory.release();
}
JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isConstruct)
{
int executableOffsetToFunction = isConstruct ? OBJECT_OFFSETOF(NativeExecutable, m_constructor) : OBJECT_OFFSETOF(NativeExecutable, m_function);
Label nativeCallThunk = align();
emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
storePtr(callFrameRegister, &m_globalData->topCallFrame);
#if CPU(X86_64)
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
peek(regT1);
emitPutToCallFrameHeader(regT1, RegisterFile::ReturnPC);
move(callFrameRegister, X86Registers::edi);
subPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
loadPtr(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_executable)), X86Registers::r9);
move(regT0, callFrameRegister); call(Address(X86Registers::r9, executableOffsetToFunction));
addPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
#elif CPU(ARM)
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT2);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3); emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
move(callFrameRegister, ARMRegisters::r0);
emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, ARMRegisters::r1);
move(regT2, callFrameRegister); loadPtr(Address(ARMRegisters::r1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
call(Address(regT2, executableOffsetToFunction));
restoreReturnAddressBeforeReturn(regT3);
#elif CPU(MIPS)
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
preserveReturnAddressAfterCall(regT3); emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
subPtr(TrustedImm32(16), stackPointerRegister);
move(callFrameRegister, MIPSRegisters::a0);
emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
move(regT0, callFrameRegister); call(Address(regT2, executableOffsetToFunction));
addPtr(TrustedImm32(16), stackPointerRegister);
restoreReturnAddressBeforeReturn(regT3);
#else
#error "JIT not supported on this platform."
UNUSED_PARAM(executableOffsetToFunction);
breakpoint();
#endif
loadPtr(&(globalData->exception), regT2);
Jump exceptionHandler = branchTestPtr(NonZero, regT2);
ret();
exceptionHandler.link(this);
preserveReturnAddressAfterCall(regT1);
move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
storePtr(regT1, regT2);
poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
storePtr(callFrameRegister, &m_globalData->topCallFrame);
move(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT1);
restoreReturnAddressBeforeReturn(regT1);
ret();
return nativeCallThunk;
}
JIT::CodeRef JIT::privateCompileCTINativeCall(JSGlobalData* globalData, NativeFunction)
{
return CodeRef::createSelfManagedCodeRef(globalData->jitStubs->ctiNativeCall());
}
void JIT::emit_op_mov(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
if (canBeOptimized()) {
emitGetVirtualRegister(src, regT0);
emitPutVirtualRegister(dst);
} else {
if (m_codeBlock->isConstantRegisterIndex(src)) {
if (!getConstantOperand(src).isNumber())
storePtr(TrustedImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
else
storePtr(ImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
if (dst == m_lastResultBytecodeRegister)
killLastResultRegister();
} else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
emitGetVirtualRegister(src, regT0);
emitPutVirtualRegister(dst);
} else {
loadPtr(Address(callFrameRegister, src * sizeof(Register)), regT1);
storePtr(regT1, Address(callFrameRegister, dst * sizeof(Register)));
}
}
}
void JIT::emit_op_end(Instruction* currentInstruction)
{
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
ret();
}
void JIT::emit_op_jmp(Instruction* currentInstruction)
{
unsigned target = currentInstruction[1].u.operand;
addJump(jump(), target);
}
void JIT::emit_op_new_object(Instruction* currentInstruction)
{
emitAllocateJSFinalObject(TrustedImmPtr(m_codeBlock->globalObject()->emptyObjectStructure()), regT0, regT1);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_new_object(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
}
void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
{
unsigned baseVal = currentInstruction[1].u.operand;
emitGetVirtualRegister(baseVal, regT0);
emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsHasInstance)));
}
void JIT::emit_op_instanceof(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
unsigned baseVal = currentInstruction[3].u.operand;
unsigned proto = currentInstruction[4].u.operand;
emitGetVirtualRegister(value, regT2);
emitGetVirtualRegister(baseVal, regT0);
emitGetVirtualRegister(proto, regT1);
emitJumpSlowCaseIfNotJSCell(regT2, value);
emitJumpSlowCaseIfNotJSCell(regT1, proto);
loadPtr(Address(regT1, JSCell::structureOffset()), regT3);
addSlowCase(emitJumpIfNotObject(regT3));
loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsDefaultHasInstance)));
move(TrustedImmPtr(JSValue::encode(jsBoolean(true))), regT0);
Label loop(this);
loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
emitJumpIfJSCell(regT2).linkTo(loop, this);
move(TrustedImmPtr(JSValue::encode(jsBoolean(false))), regT0);
isInstance.link(this);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_is_undefined(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
Jump isCell = emitJumpIfJSCell(regT0);
comparePtr(Equal, regT0, TrustedImm32(ValueUndefined), regT0);
Jump done = jump();
isCell.link(this);
loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
test8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
done.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_is_boolean(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
testPtr(Zero, regT0, TrustedImm32(static_cast<int32_t>(~1)), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_is_number(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
testPtr(NonZero, regT0, tagTypeNumberRegister, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_is_string(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
Jump isNotCell = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
compare8(Equal, Address(regT1, Structure::typeInfoTypeOffset()), TrustedImm32(StringType), regT0);
emitTagAsBoolImmediate(regT0);
Jump done = jump();
isNotCell.link(this);
move(TrustedImm32(ValueFalse), regT0);
done.link(this);
emitPutVirtualRegister(dst);
}
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(Instruction* currentInstruction)
{
compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
unsigned activation = currentInstruction[1].u.operand;
unsigned arguments = currentInstruction[2].u.operand;
Jump activationCreated = branchTestPtr(NonZero, addressFor(activation));
Jump argumentsNotCreated = branchTestPtr(Zero, addressFor(arguments));
activationCreated.link(this);
JITStubCall stubCall(this, cti_op_tear_off_activation);
stubCall.addArgument(activation, regT2);
stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
stubCall.call();
argumentsNotCreated.link(this);
}
void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
Jump argsNotCreated = branchTestPtr(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(dst))));
JITStubCall stubCall(this, cti_op_tear_off_arguments);
stubCall.addArgument(unmodifiedArgumentsRegister(dst), regT2);
stubCall.call();
argsNotCreated.link(this);
}
void JIT::emit_op_ret(Instruction* currentInstruction)
{
emitOptimizationCheck(RetOptimizationCheck);
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT1);
ret();
}
void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
emitOptimizationCheck(RetOptimizationCheck);
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
Jump notJSCell = emitJumpIfNotJSCell(returnValueRegister);
loadPtr(Address(returnValueRegister, JSCell::structureOffset()), regT2);
Jump notObject = emitJumpIfNotObject(regT2);
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT1);
ret();
notJSCell.link(this);
notObject.link(this);
emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueRegister);
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
restoreReturnAddressBeforeReturn(regT1);
ret();
}
void JIT::emit_op_resolve(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
}
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
emitGetVirtualRegister(src, regT0);
Jump isImm = emitJumpIfNotJSCell(regT0);
addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
isImm.link(this);
if (dst != src)
emitPutVirtualRegister(dst);
}
void JIT::emit_op_strcat(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_strcat);
stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_base(Instruction* currentInstruction)
{
JITStubCall stubCall(this, currentInstruction[3].u.operand ? cti_op_resolve_base_strict_put : cti_op_resolve_base);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
}
void JIT::emit_op_ensure_property_exists(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_ensure_property_exists);
stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_skip(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_skip);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_global(Instruction* currentInstruction, bool)
{
void* globalObject = m_codeBlock->globalObject();
unsigned currentIndex = m_globalResolveInfoIndex++;
GlobalResolveInfo* resolveInfoAddress = &(m_codeBlock->globalResolveInfo(currentIndex));
move(TrustedImmPtr(globalObject), regT0);
move(TrustedImmPtr(resolveInfoAddress), regT2);
loadPtr(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, structure)), regT1);
addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, JSCell::structureOffset())));
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_propertyStorage)), regT0);
load32(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, offset)), regT1);
loadPtr(BaseIndex(regT0, regT1, ScalePtr), regT0);
emitValueProfilingSite();
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_resolve_global(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
unsigned currentIndex = m_globalResolveInfoIndex++;
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_resolve_global);
stubCall.addArgument(TrustedImmPtr(ident));
stubCall.addArgument(TrustedImm32(currentIndex));
stubCall.addArgument(regT0);
stubCall.callWithValueProfiling(dst);
}
void JIT::emit_op_not(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
addSlowCase(branchTestPtr(NonZero, regT0, TrustedImm32(static_cast<int32_t>(~1))));
xorPtr(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_jfalse(Instruction* currentInstruction)
{
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0)))), target);
Jump isNonZero = emitJumpIfImmediateInteger(regT0);
addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))), target);
addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))));
isNonZero.link(this);
}
void JIT::emit_op_jeq_null(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(src, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
addJump(branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
isImmediate.link(this);
andPtr(TrustedImm32(~TagBitUndefined), regT0);
addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
};
void JIT::emit_op_jneq_null(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(src, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
addJump(branchTest8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
isImmediate.link(this);
andPtr(TrustedImm32(~TagBitUndefined), regT0);
addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
}
void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
JSCell* ptr = currentInstruction[2].u.jsCell.get();
unsigned target = currentInstruction[3].u.operand;
emitGetVirtualRegister(src, regT0);
addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue(ptr)))), target);
}
void JIT::emit_op_eq(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
compare32(Equal, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_with_base);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
}
void JIT::emit_op_resolve_with_this(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_with_this);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
}
void JIT::emit_op_jtrue(Instruction* currentInstruction)
{
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
Jump isZero = branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0))));
addJump(emitJumpIfImmediateInteger(regT0), target);
addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))), target);
addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))));
isZero.link(this);
}
void JIT::emit_op_neq(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
compare32(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_bitxor(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
xorPtr(regT1, regT0);
emitFastArithReTagImmediate(regT0, regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_bitor(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
orPtr(regT1, regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_throw(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_throw);
stubCall.addArgument(currentInstruction[1].u.operand, regT2);
stubCall.call();
ASSERT(regT0 == returnValueRegister);
#ifndef NDEBUG
breakpoint();
#endif
}
void JIT::emit_op_get_pnames(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int base = currentInstruction[2].u.operand;
int i = currentInstruction[3].u.operand;
int size = currentInstruction[4].u.operand;
int breakTarget = currentInstruction[5].u.operand;
JumpList isNotObject;
emitGetVirtualRegister(base, regT0);
if (!m_codeBlock->isKnownNotImmediate(base))
isNotObject.append(emitJumpIfNotJSCell(regT0));
if (base != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode()) {
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
isNotObject.append(emitJumpIfNotObject(regT2));
}
Label isObject(this);
JITStubCall getPnamesStubCall(this, cti_op_get_pnames);
getPnamesStubCall.addArgument(regT0);
getPnamesStubCall.call(dst);
load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
storePtr(tagTypeNumberRegister, payloadFor(i));
store32(TrustedImm32(Int32Tag), intTagFor(size));
store32(regT3, intPayloadFor(size));
Jump end = jump();
isNotObject.link(this);
move(regT0, regT1);
and32(TrustedImm32(~TagBitUndefined), regT1);
addJump(branch32(Equal, regT1, TrustedImm32(ValueNull)), breakTarget);
JITStubCall toObjectStubCall(this, cti_to_object);
toObjectStubCall.addArgument(regT0);
toObjectStubCall.call(base);
jump().linkTo(isObject, this);
end.link(this);
}
void JIT::emit_op_next_pname(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int base = currentInstruction[2].u.operand;
int i = currentInstruction[3].u.operand;
int size = currentInstruction[4].u.operand;
int it = currentInstruction[5].u.operand;
int target = currentInstruction[6].u.operand;
JumpList callHasProperty;
Label begin(this);
load32(intPayloadFor(i), regT0);
Jump end = branch32(Equal, regT0, intPayloadFor(size));
loadPtr(addressFor(it), regT1);
loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
loadPtr(BaseIndex(regT2, regT0, TimesEight), regT2);
emitPutVirtualRegister(dst, regT2);
add32(TrustedImm32(1), regT0);
store32(regT0, intPayloadFor(i));
emitGetVirtualRegister(base, regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
loadPtr(Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedPrototypeChain))), regT3);
loadPtr(Address(regT3, OBJECT_OFFSETOF(StructureChain, m_vector)), regT3);
addJump(branchTestPtr(Zero, Address(regT3)), target);
Label checkPrototype(this);
loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
callHasProperty.append(emitJumpIfNotJSCell(regT2));
loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
addPtr(TrustedImm32(sizeof(Structure*)), regT3);
branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
addJump(jump(), target);
callHasProperty.link(this);
emitGetVirtualRegister(dst, regT1);
JITStubCall stubCall(this, cti_has_property);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
addJump(branchTest32(NonZero, regT0), target);
jump().linkTo(begin, this);
end.link(this);
}
void JIT::emit_op_push_scope(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_push_scope);
stubCall.addArgument(currentInstruction[1].u.operand, regT2);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_pop_scope(Instruction*)
{
JITStubCall(this, cti_op_pop_scope).call();
}
void JIT::compileOpStrictEq(Instruction* currentInstruction, CompileOpStrictEqType type)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned src1 = currentInstruction[2].u.operand;
unsigned src2 = currentInstruction[3].u.operand;
emitGetVirtualRegisters(src1, regT0, src2, regT1);
move(regT0, regT2);
orPtr(regT1, regT2);
addSlowCase(emitJumpIfJSCell(regT2));
Jump leftOK = emitJumpIfImmediateInteger(regT0);
addSlowCase(emitJumpIfImmediateNumber(regT0));
leftOK.link(this);
Jump rightOK = emitJumpIfImmediateInteger(regT1);
addSlowCase(emitJumpIfImmediateNumber(regT1));
rightOK.link(this);
if (type == OpStrictEq)
comparePtr(Equal, regT1, regT0, regT0);
else
comparePtr(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_stricteq(Instruction* currentInstruction)
{
compileOpStrictEq(currentInstruction, OpStrictEq);
}
void JIT::emit_op_nstricteq(Instruction* currentInstruction)
{
compileOpStrictEq(currentInstruction, OpNStrictEq);
}
void JIT::emit_op_to_jsnumber(Instruction* currentInstruction)
{
int srcVReg = currentInstruction[2].u.operand;
emitGetVirtualRegister(srcVReg, regT0);
Jump wasImmediate = emitJumpIfImmediateInteger(regT0);
emitJumpSlowCaseIfNotJSCell(regT0, srcVReg);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
addSlowCase(branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(NumberType)));
wasImmediate.link(this);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_push_new_scope(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_push_new_scope);
stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.addArgument(currentInstruction[3].u.operand, regT2);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
{
killLastResultRegister(); move(regT0, callFrameRegister);
peek(regT3, OBJECT_OFFSETOF(struct JITStackFrame, globalData) / sizeof(void*));
loadPtr(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)), regT0);
storePtr(TrustedImmPtr(JSValue::encode(JSValue())), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)));
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_jmp_scopes(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_jmp_scopes);
stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.call();
addJump(jump(), currentInstruction[2].u.operand);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
{
unsigned tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
SimpleJumpTable* jumpTable = &m_codeBlock->immediateSwitchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Immediate));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_imm);
stubCall.addArgument(scrutinee, regT2);
stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
void JIT::emit_op_switch_char(Instruction* currentInstruction)
{
unsigned tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
SimpleJumpTable* jumpTable = &m_codeBlock->characterSwitchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Character));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_char);
stubCall.addArgument(scrutinee, regT2);
stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
void JIT::emit_op_switch_string(Instruction* currentInstruction)
{
unsigned tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
StringJumpTable* jumpTable = &m_codeBlock->stringSwitchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset));
JITStubCall stubCall(this, cti_op_switch_string);
stubCall.addArgument(scrutinee, regT2);
stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
void JIT::emit_op_throw_reference_error(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_throw_reference_error);
if (!m_codeBlock->getConstant(currentInstruction[1].u.operand).isNumber())
stubCall.addArgument(TrustedImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
else
stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
stubCall.call();
}
void JIT::emit_op_debug(Instruction* currentInstruction)
{
#if ENABLE(DEBUG_WITH_BREAKPOINT)
UNUSED_PARAM(currentInstruction);
breakpoint();
#else
JITStubCall stubCall(this, cti_op_debug);
stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call();
#endif
}
void JIT::emit_op_eq_null(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned src1 = currentInstruction[2].u.operand;
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
test8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
andPtr(TrustedImm32(~TagBitUndefined), regT0);
comparePtr(Equal, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_neq_null(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned src1 = currentInstruction[2].u.operand;
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
test8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
andPtr(TrustedImm32(~TagBitUndefined), regT0);
comparePtr(NotEqual, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_enter(Instruction*)
{
size_t count = m_codeBlock->m_numVars;
for (size_t j = 0; j < count; ++j)
emitInitRegister(j);
}
void JIT::emit_op_create_activation(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
Jump activationCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
JITStubCall(this, cti_op_push_activation).call(currentInstruction[1].u.operand);
emitPutVirtualRegister(dst);
activationCreated.link(this);
}
void JIT::emit_op_create_arguments(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
JITStubCall(this, cti_op_create_arguments).call();
emitPutVirtualRegister(dst);
emitPutVirtualRegister(unmodifiedArgumentsRegister(dst));
argsCreated.link(this);
}
void JIT::emit_op_init_lazy_reg(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
storePtr(TrustedImmPtr(0), Address(callFrameRegister, sizeof(Register) * dst));
}
void JIT::emit_op_convert_this(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
emitJumpSlowCaseIfNotJSCell(regT0);
addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
}
void JIT::emit_op_get_callee(Instruction* currentInstruction)
{
unsigned result = currentInstruction[1].u.operand;
emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
emitPutVirtualRegister(result);
}
void JIT::emit_op_create_this(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT2);
emitJumpSlowCaseIfNotJSCell(regT2, currentInstruction[2].u.operand);
loadPtr(Address(regT2, JSCell::structureOffset()), regT1);
addSlowCase(emitJumpIfNotObject(regT1));
loadPtr(Address(regT2, JSObject::offsetOfInheritorID()), regT2);
addSlowCase(branchTestPtr(Zero, regT2));
emitAllocateJSFinalObject(regT2, regT0, regT1);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand); linkSlowCase(iter); linkSlowCase(iter); linkSlowCase(iter); JITStubCall stubCall(this, cti_op_create_this);
stubCall.addArgument(currentInstruction[2].u.operand, regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
{
peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_will_call);
stubCall.addArgument(currentInstruction[1].u.operand, regT1);
stubCall.call();
noProfiler.link(this);
}
void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
{
peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_did_call);
stubCall.addArgument(currentInstruction[1].u.operand, regT1);
stubCall.call();
noProfiler.link(this);
}
void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
void* globalThis = m_codeBlock->globalObject()->globalScopeChain()->globalThis.get();
linkSlowCase(iter);
Jump isNotUndefined = branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsUndefined())));
move(TrustedImmPtr(globalThis), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand, regT0);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_convert_this));
isNotUndefined.link(this);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_convert_this);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_to_primitive);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
JITStubCall stubCall(this, cti_op_not);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_jfalse(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_jtrue);
stubCall.addArgument(regT0);
stubCall.call();
emitJumpSlowToHot(branchTest32(Zero, regT0), currentInstruction[2].u.operand); }
void JIT::emitSlow_op_jtrue(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_jtrue);
stubCall.addArgument(regT0);
stubCall.call();
emitJumpSlowToHot(branchTest32(NonZero, regT0), currentInstruction[2].u.operand);
}
void JIT::emitSlow_op_bitxor(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_bitxor);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_bitor(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_bitor);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_eq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_eq);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_neq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_eq);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
xor32(TrustedImm32(0x1), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_stricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_stricteq);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_nstricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_nstricteq);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned baseVal = currentInstruction[1].u.operand;
linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_check_has_instance);
stubCall.addArgument(baseVal, regT2);
stubCall.call();
}
void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned value = currentInstruction[2].u.operand;
unsigned baseVal = currentInstruction[3].u.operand;
unsigned proto = currentInstruction[4].u.operand;
linkSlowCaseIfNotJSCell(iter, value);
linkSlowCaseIfNotJSCell(iter, proto);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_instanceof);
stubCall.addArgument(value, regT2);
stubCall.addArgument(baseVal, regT2);
stubCall.addArgument(proto, regT2);
stubCall.call(dst);
}
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(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
compileOpCallSlowCase(op_construct, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_to_jsnumber);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int argumentsRegister = currentInstruction[2].u.operand;
addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
sub32(TrustedImm32(1), regT0);
emitFastArithReTagImmediate(regT0, regT0);
emitPutVirtualRegister(dst, regT0);
}
void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
unsigned dst = currentInstruction[1].u.operand;
unsigned base = currentInstruction[2].u.operand;
Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
emitGetVirtualRegister(base, regT0);
JITStubCall stubCall(this, cti_op_get_by_id_generic);
stubCall.addArgument(regT0);
stubCall.addArgument(TrustedImmPtr(ident));
stubCall.call(dst);
}
void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int argumentsRegister = currentInstruction[2].u.operand;
int property = currentInstruction[3].u.operand;
addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
emitGetVirtualRegister(property, regT1);
addSlowCase(emitJumpIfNotImmediateInteger(regT1));
add32(TrustedImm32(1), regT1);
emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT2);
addSlowCase(branch32(AboveOrEqual, regT1, regT2));
neg32(regT1);
signExtend32ToPtr(regT1, regT1);
loadPtr(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
emitPutVirtualRegister(dst, regT0);
}
void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned arguments = currentInstruction[2].u.operand;
unsigned property = currentInstruction[3].u.operand;
linkSlowCase(iter);
Jump skipArgumentsCreation = jump();
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall(this, cti_op_create_arguments).call();
emitPutVirtualRegister(arguments);
emitPutVirtualRegister(unmodifiedArgumentsRegister(arguments));
skipArgumentsCreation.link(this);
JITStubCall stubCall(this, cti_op_get_by_val);
stubCall.addArgument(arguments, regT2);
stubCall.addArgument(property, regT2);
stubCall.call(dst);
}
#endif // USE(JSVALUE64)
void JIT::emit_op_resolve_global_dynamic(Instruction* currentInstruction)
{
int skip = currentInstruction[5].u.operand;
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
ASSERT(skip || !checkTopLevel);
if (checkTopLevel && skip--) {
Jump activationNotCreated;
if (checkTopLevel)
activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
activationNotCreated.link(this);
}
while (skip--) {
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
}
emit_op_resolve_global(currentInstruction, true);
}
void JIT::emitSlow_op_resolve_global_dynamic(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
int skip = currentInstruction[5].u.operand;
while (skip--)
linkSlowCase(iter);
JITStubCall resolveStubCall(this, cti_op_resolve);
resolveStubCall.addArgument(TrustedImmPtr(ident));
resolveStubCall.call(dst);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_resolve_global_dynamic));
unsigned currentIndex = m_globalResolveInfoIndex++;
linkSlowCase(iter); JITStubCall stubCall(this, cti_op_resolve_global);
stubCall.addArgument(TrustedImmPtr(ident));
stubCall.addArgument(TrustedImm32(currentIndex));
stubCall.addArgument(regT0);
stubCall.callWithValueProfiling(dst);
}
void JIT::emit_op_new_regexp(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_new_regexp);
stubCall.addArgument(TrustedImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_new_func(Instruction* currentInstruction)
{
Jump lazyJump;
int dst = currentInstruction[1].u.operand;
if (currentInstruction[3].u.operand) {
#if USE(JSVALUE32_64)
lazyJump = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
#else
lazyJump = branchTestPtr(NonZero, addressFor(dst));
#endif
}
FunctionExecutable* executable = m_codeBlock->functionDecl(currentInstruction[2].u.operand);
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
emitAllocateJSFunction(executable, regT2, regT0, regT1);
emitStoreCell(dst, regT0);
if (currentInstruction[3].u.operand) {
#if USE(JSVALUE32_64)
unmap();
#else
killLastResultRegister();
#endif
lazyJump.link(this);
}
}
void JIT::emitSlow_op_new_func(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_new_func);
stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
{
FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
if (executable->name().isNull()) {
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
emitAllocateJSFunction(executable, regT2, regT0, regT1);
emitStoreCell(currentInstruction[1].u.operand, regT0);
return;
}
JITStubCall stubCall(this, cti_op_new_func_exp);
stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_new_func_exp(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
if (!executable->name().isNull())
return;
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_new_func_exp);
stubCall.addArgument(TrustedImmPtr(executable));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_new_array(Instruction* currentInstruction)
{
int length = currentInstruction[3].u.operand;
if (CopiedSpace::isOversize(JSArray::storageSize(length))) {
JITStubCall stubCall(this, cti_op_new_array);
stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
return;
}
int dst = currentInstruction[1].u.operand;
int values = currentInstruction[2].u.operand;
emitAllocateJSArray(values, length, regT0, regT1, regT2);
emitStoreCell(dst, regT0);
}
void JIT::emitSlow_op_new_array(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int length = currentInstruction[3].u.operand;
if (CopiedSpace::isOversize(JSArray::storageSize(length)))
return;
linkSlowCase(iter); linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_new_array);
stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_new_array_buffer(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_new_array_buffer);
stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
}
#endif // ENABLE(JIT)