void Initialize()
{
if (base::win::get_version() < base::win::VERSION_WIN7)
{
return ;
}
const wchar_t* currentAppID = 0;
HRESULT hr = windows7::GetCurrentProcessExplicitAppUserModelID((wchar_t**)¤tAppID);
if (FAILED(hr) || !currentAppID)
{
currentAppID = getCurrentAppID();
windows7::SetCurrentProcessExplicitAppUserModelID(currentAppID);
}
JumpList jumpList;
jumpList.SetAppID(currentAppID);
if (jumpList.InitializeList())
{
fs::path ydweDirectory = base::path::get(base::path::DIR_MODULE).remove_filename().remove_filename();
jumpList.AddTaskSeparator();
jumpList.AddTask(L"YDWEÅäÖÃ", [&](CComPtr<IShellLinkW>& shellLinkPtr)
{
shellLinkPtr->SetPath((ydweDirectory / L"bin" / L"YDWEConfig.exe").c_str());
shellLinkPtr->SetDescription(L"´ò¿ªYDWEÅäÖóÌÐò¡£");
shellLinkPtr->SetIconLocation((ydweDirectory / L"bin" / L"logo.ico").c_str(), 0);
});
}
}
void Generator::terminateAlternative(JumpList& successes, JumpList& failures)
{
successes.append(jump());
failures.link(this);
peek(index);
}
void JIT::compileLoadVarargs(Instruction* instruction)
{
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.
emitFastArithReTagImmediate(regT0, regT2);
storePtr(regT2, Address(regT1, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register))));
// 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, Imm32(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, Imm32(1), regT0).linkTo(copyLoop, this);
end.append(jump());
}
if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
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);
if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
end.link(this);
}
void JIT::compileLoadVarargs(Instruction* instruction)
{
int thisValue = instruction[3].u.operand;
int arguments = instruction[4].u.operand;
int firstFreeRegister = instruction[5].u.operand;
JumpList slowCase;
JumpList end;
bool canOptimize = m_codeBlock->usesArguments()
&& arguments == m_codeBlock->argumentsRegister().offset()
&& !m_codeBlock->symbolTable()->slowArguments();
if (canOptimize) {
emitGetVirtualRegister(arguments, regT0);
slowCase.append(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(JSValue()))));
emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT0);
slowCase.append(branch32(Above, regT0, TrustedImm32(Arguments::MaxArguments + 1)));
// regT0: argumentCountIncludingThis
move(regT0, regT1);
neg64(regT1);
add64(TrustedImm32(firstFreeRegister - JSStack::CallFrameHeaderSize), regT1);
lshift64(TrustedImm32(3), regT1);
addPtr(callFrameRegister, regT1);
// regT1: newCallFrame
slowCase.append(branchPtr(Above, AbsoluteAddress(m_vm->addressOfJSStackLimit()), regT1));
// Initialize ArgumentCount.
store32(regT0, Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
// Initialize 'this'.
emitGetVirtualRegister(thisValue, regT2);
store64(regT2, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
// Copy arguments.
signExtend32ToPtr(regT0, regT0);
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);
store64(regT2, BaseIndex(regT1, regT0, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
branchSub64(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
end.append(jump());
}
if (canOptimize)
slowCase.link(this);
emitGetVirtualRegister(thisValue, regT0);
emitGetVirtualRegister(arguments, regT1);
callOperation(operationLoadVarargs, regT0, regT1, firstFreeRegister);
move(returnValueGPR, regT1);
if (canOptimize)
end.link(this);
}
void JIT::compileLoadVarargs(Instruction* instruction)
{
int thisValue = instruction[2].u.operand;
int arguments = instruction[3].u.operand;
int firstFreeRegister = instruction[4].u.operand;
JumpList slowCase;
JumpList end;
if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister()) {
emitLoadTag(arguments, regT1);
slowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag)));
load32(payloadFor(RegisterFile::ArgumentCount), regT2);
slowCase.append(branch32(Above, regT2, TrustedImm32(Arguments::MaxArguments + 1)));
// regT2: argumentCountIncludingThis
move(regT2, regT3);
add32(TrustedImm32(firstFreeRegister + RegisterFile::CallFrameHeaderSize), regT3);
lshift32(TrustedImm32(3), regT3);
addPtr(callFrameRegister, regT3);
// regT3: newCallFrame
slowCase.append(branchPtr(Below, AbsoluteAddress(m_globalData->interpreter->registerFile().addressOfEnd()), regT3));
// Initialize ArgumentCount.
store32(regT2, payloadFor(RegisterFile::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.
neg32(regT2);
end.append(branchAdd32(Zero, TrustedImm32(1), regT2));
// regT2: -argumentCount;
Label copyLoop = label();
load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT0);
load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT1);
store32(regT0, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
store32(regT1, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
branchAdd32(NonZero, TrustedImm32(1), regT2).linkTo(copyLoop, this);
end.append(jump());
}
if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
slowCase.link(this);
JITStubCall stubCall(this, cti_op_load_varargs);
stubCall.addArgument(thisValue);
stubCall.addArgument(arguments);
stubCall.addArgument(Imm32(firstFreeRegister));
stubCall.call(regT3);
if (m_codeBlock->usesArguments() && arguments == m_codeBlock->argumentsRegister())
end.link(this);
}
void Generator::generateAssertionEOL(JumpList& failures)
{
if (m_parser.multiline()) {
JumpList nextIsNewline;
generateLoadCharacter(nextIsNewline); // end of input == success
generateCharacterClassInverted(nextIsNewline, CharacterClass::newline());
failures.append(jump());
nextIsNewline.link(this);
} else {
failures.append(jne32(length, index));
}
}
void Generator::generateParenthesesInvertedAssertion(JumpList& failures)
{
JumpList disjunctionFailed;
push(index);
m_parser.parseDisjunction(disjunctionFailed);
// If the disjunction succeeded, the inverted assertion failed.
pop(index);
failures.append(jump());
// If the disjunction failed, the inverted assertion succeeded.
disjunctionFailed.link(this);
pop(index);
}
void Generator::generateParenthesesAssertion(JumpList& failures)
{
JumpList disjunctionFailed;
push(index);
m_parser.parseDisjunction(disjunctionFailed);
Jump success = jump();
disjunctionFailed.link(this);
pop(index);
failures.append(jump());
success.link(this);
pop(index);
}
void Generator::generateCharacterClass(JumpList& failures, const CharacterClass& charClass, bool invert)
{
generateLoadCharacter(failures);
if (invert)
generateCharacterClassInverted(failures, charClass);
else {
JumpList successes;
generateCharacterClassInverted(successes, charClass);
failures.append(jump());
successes.link(this);
}
add32(Imm32(1), index);
}
void Generator::generateAssertionWordBoundary(JumpList& failures, bool invert)
{
JumpList wordBoundary;
JumpList notWordBoundary;
// (1) Check if the previous value was a word char
// (1.1) check for begin of input
Jump atBegin = je32(index, Imm32(0));
// (1.2) load the last char, and chck if is word character
load16(BaseIndex(input, index, TimesTwo, -2), character);
JumpList previousIsWord;
generateCharacterClassInverted(previousIsWord, CharacterClass::wordchar());
// (1.3) if we get here, previous is not a word char
atBegin.link(this);
// (2) Handle situation where previous was NOT a \w
generateLoadCharacter(notWordBoundary);
generateCharacterClassInverted(wordBoundary, CharacterClass::wordchar());
// (2.1) If we get here, neither chars are word chars
notWordBoundary.append(jump());
// (3) Handle situation where previous was a \w
// (3.0) link success in first match to here
previousIsWord.link(this);
generateLoadCharacter(wordBoundary);
generateCharacterClassInverted(notWordBoundary, CharacterClass::wordchar());
// (3.1) If we get here, this is an end of a word, within the input.
// (4) Link everything up
if (invert) {
// handle the fall through case
wordBoundary.append(jump());
// looking for non word boundaries, so link boundary fails to here.
notWordBoundary.link(this);
failures.append(wordBoundary);
} else {
// looking for word boundaries, so link successes here.
wordBoundary.link(this);
failures.append(notWordBoundary);
}
}
//
// FUNCTION: InitMainWindowInstance(HINSTANCE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
HWND InitMainWindowInstance(
HINSTANCE hInstance,
int nCmdShow,
PTCHAR szWindowClass,
PTCHAR szTitle)
{
hInst = hInstance; // Store instance handle in our global variable
beginMainWindowCreationTime.Now();
// Should make window size be data driven
mainWindowHandle = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW | WS_EX_CLIENTEDGE,
szWindowClass, szTitle,
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
CW_USEDEFAULT, CW_USEDEFAULT,
// WS_POPUP, CW_USEDEFAULT, 0,
DEFAULT_WIN_WIDTH, DEFAULT_WIN_HEIGHT,
NULL, NULL,
hInstance, NULL);
if (mainWindowHandle)
{
if (!devMode)
{
jumpList.SetUpJumpList(hInst);
}
}
return mainWindowHandle;
}
void Generator::generatePatternCharacter(JumpList& failures, int ch)
{
generateLoadCharacter(failures);
// used for unicode case insensitive
bool hasUpper = false;
Jump isUpper;
// if case insensitive match
if (m_parser.ignoreCase()) {
UChar lower, upper;
// check for ascii case sensitive characters
if (isASCIIAlpha(ch)) {
or32(Imm32(32), character);
ch |= 32;
} else if (!isASCII(ch) && ((lower = Unicode::toLower(ch)) != (upper = Unicode::toUpper(ch)))) {
// handle unicode case sentitive characters - branch to success on upper
isUpper = je32(character, Imm32(upper));
hasUpper = true;
ch = lower;
}
}
// checks for ch, or lower case version of ch, if insensitive
failures.append(jne32(character, Imm32((unsigned short)ch)));
if (m_parser.ignoreCase() && hasUpper) {
// for unicode case insensitive matches, branch here if upper matches.
isUpper.link(this);
}
// on success consume the char
add32(Imm32(1), index);
}
void Generator::generateCharacterClassInvertedRange(JumpList& failures, JumpList& matchDest, const CharacterRange* ranges, unsigned count, unsigned* matchIndex, const UChar* matches, unsigned matchCount)
{
do {
// pick which range we're going to generate
int which = count >> 1;
char lo = ranges[which].begin;
char hi = ranges[which].end;
// check if there are any ranges or matches below lo. If not, just jl to failure -
// if there is anything else to check, check that first, if it falls through jmp to failure.
if ((*matchIndex < matchCount) && (matches[*matchIndex] < lo)) {
Jump loOrAbove = jge32(character, Imm32((unsigned short)lo));
// generate code for all ranges before this one
if (which)
generateCharacterClassInvertedRange(failures, matchDest, ranges, which, matchIndex, matches, matchCount);
do {
matchDest.append(je32(character, Imm32((unsigned short)matches[*matchIndex])));
++*matchIndex;
} while ((*matchIndex < matchCount) && (matches[*matchIndex] < lo));
failures.append(jump());
loOrAbove.link(this);
} else if (which) {
Jump loOrAbove = jge32(character, Imm32((unsigned short)lo));
generateCharacterClassInvertedRange(failures, matchDest, ranges, which, matchIndex, matches, matchCount);
failures.append(jump());
loOrAbove.link(this);
} else
failures.append(jl32(character, Imm32((unsigned short)lo)));
while ((*matchIndex < matchCount) && (matches[*matchIndex] <= hi))
++*matchIndex;
matchDest.append(jle32(character, Imm32((unsigned short)hi)));
// fall through to here, the value is above hi.
// shuffle along & loop around if there are any more matches to handle.
unsigned next = which + 1;
ranges += next;
count -= next;
} while (count);
}
bool Generator::generatePatternCharacterPair(JumpList& failures, int ch1, int ch2)
{
if (m_parser.ignoreCase()) {
// Non-trivial case folding requires more than one test, so we can't
// test as a pair with an adjacent character.
if (!isASCII(ch1) && Unicode::toLower(ch1) != Unicode::toUpper(ch1))
return false;
if (!isASCII(ch2) && Unicode::toLower(ch2) != Unicode::toUpper(ch2))
return false;
}
// Optimistically consume 2 characters.
add32(Imm32(2), index);
failures.append(jg32(index, length));
// Load the characters we just consumed, offset -2 characters from index.
load32(BaseIndex(input, index, TimesTwo, -2 * 2), character);
if (m_parser.ignoreCase()) {
// Convert ASCII alphabet characters to upper case before testing for
// equality. (ASCII non-alphabet characters don't require upper-casing
// because they have no uppercase equivalents. Unicode characters don't
// require upper-casing because we only handle Unicode characters whose
// upper and lower cases are equal.)
int ch1Mask = 0;
if (isASCIIAlpha(ch1)) {
ch1 |= 32;
ch1Mask = 32;
}
int ch2Mask = 0;
if (isASCIIAlpha(ch2)) {
ch2 |= 32;
ch2Mask = 32;
}
int mask = ch1Mask | (ch2Mask << 16);
if (mask)
or32(Imm32(mask), character);
}
int pair = ch1 | (ch2 << 16);
failures.append(jne32(character, Imm32(pair)));
return true;
}
void JIT::privateCompileClosureCall(CallLinkInfo* callLinkInfo, CodeBlock* calleeCodeBlock, Structure* expectedStructure, ExecutableBase* expectedExecutable, MacroAssemblerCodePtr codePtr)
{
JumpList slowCases;
slowCases.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
slowCases.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(expectedStructure)));
slowCases.append(branchPtr(NotEqual, Address(regT0, JSFunction::offsetOfExecutable()), TrustedImmPtr(expectedExecutable)));
loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT1);
emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
Call call = nearCall();
Jump done = jump();
slowCases.link(this);
move(TrustedImmPtr(callLinkInfo->callReturnLocation.executableAddress()), regT2);
restoreReturnAddressBeforeReturn(regT2);
Jump slow = jump();
LinkBuffer patchBuffer(*m_vm, this, m_codeBlock);
patchBuffer.link(call, FunctionPtr(codePtr.executableAddress()));
patchBuffer.link(done, callLinkInfo->hotPathOther.labelAtOffset(0));
patchBuffer.link(slow, CodeLocationLabel(m_vm->getCTIStub(virtualCallThunkGenerator).code()));
RefPtr<ClosureCallStubRoutine> stubRoutine = adoptRef(new ClosureCallStubRoutine(
FINALIZE_CODE(
patchBuffer,
("Baseline closure call stub for %s, return point %p, target %p (%s)",
toCString(*m_codeBlock).data(),
callLinkInfo->hotPathOther.labelAtOffset(0).executableAddress(),
codePtr.executableAddress(),
toCString(pointerDump(calleeCodeBlock)).data())),
*m_vm, m_codeBlock->ownerExecutable(), expectedStructure, expectedExecutable,
callLinkInfo->codeOrigin));
RepatchBuffer repatchBuffer(m_codeBlock);
repatchBuffer.replaceWithJump(
RepatchBuffer::startOfBranchPtrWithPatchOnRegister(callLinkInfo->hotPathBegin),
CodeLocationLabel(stubRoutine->code().code()));
repatchBuffer.relink(callLinkInfo->callReturnLocation, m_vm->getCTIStub(virtualCallThunkGenerator).code());
callLinkInfo->stub = stubRoutine.release();
}
void Generator::generateAssertionBOL(JumpList& failures)
{
if (m_parser.multiline()) {
JumpList previousIsNewline;
// begin of input == success
previousIsNewline.append(je32(index, Imm32(0)));
// now check prev char against newline characters.
load16(BaseIndex(input, index, TimesTwo, -2), character);
generateCharacterClassInverted(previousIsNewline, CharacterClass::newline());
failures.append(jump());
previousIsNewline.link(this);
} else
failures.append(jne32(index, Imm32(0)));
}
void Generator::generateNonGreedyQuantifier(JumpList& failures, GenerateAtomFunctor& functor, unsigned min, unsigned max)
{
JumpList atomFailedList;
JumpList alternativeFailedList;
// (0) Setup: Save, then init repeatCount.
push(repeatCount);
move(Imm32(0), repeatCount);
Jump start = jump();
// (4) Quantifier failed: No more atom reading possible.
Label quantifierFailed(this);
pop(repeatCount);
failures.append(jump());
// (3) Alternative failed: If we can, read another atom, then fall through to (2) to try again.
Label alternativeFailed(this);
pop(index);
if (max != Quantifier::Infinity)
je32(repeatCount, Imm32(max), quantifierFailed);
// (1) Read an atom.
if (min)
start.link(this);
Label readAtom(this);
functor.generateAtom(this, atomFailedList);
atomFailedList.linkTo(quantifierFailed, this);
add32(Imm32(1), repeatCount);
// (2) Keep reading if we're under the minimum.
if (min > 1)
jl32(repeatCount, Imm32(min), readAtom);
// (3) Test the rest of the alternative.
if (!min)
start.link(this);
push(index);
m_parser.parseAlternative(alternativeFailedList);
alternativeFailedList.linkTo(alternativeFailed, this);
pop();
pop(repeatCount);
}
bool JumpListAddRecentTask(JumpList& jumpList, fs::path const& ydweDirectory, fs::path const& filePath)
{
HRESULT hr = jumpList.AddTask(filePath.filename().c_str(), [&](CComPtr<IShellLinkW>& shellLinkPtr)
{
shellLinkPtr->SetPath((ydweDirectory / L"YDWE.exe").c_str());
shellLinkPtr->SetArguments((L" -loadfile \"" + filePath.wstring() + L"\"").c_str());
shellLinkPtr->SetDescription(filePath.c_str());
shellLinkPtr->SetIconLocation((ydweDirectory / L"bin" / L"logo.ico").c_str(), 0);
});
return SUCCEEDED(hr);
}
Generator::Jump Generator::generateParenthesesResetTrampoline(JumpList& newFailures, unsigned subpatternIdBefore, unsigned subpatternIdAfter)
{
Jump skip = jump();
newFailures.link(this);
for (unsigned i = subpatternIdBefore + 1; i <= subpatternIdAfter; ++i) {
store32(Imm32(-1), Address(output, (2 * i) * sizeof(int)));
store32(Imm32(-1), Address(output, (2 * i + 1) * sizeof(int)));
}
Jump newFailJump = jump();
skip.link(this);
return newFailJump;
}
void Generator::generateGreedyQuantifier(JumpList& failures, GenerateAtomFunctor& functor, unsigned min, unsigned max)
{
if (!max)
return;
JumpList doneReadingAtomsList;
JumpList alternativeFailedList;
// (0) Setup: Save, then init repeatCount.
push(repeatCount);
move(Imm32(0), repeatCount);
// (1) Greedily read as many copies of the atom as possible, then jump to (2).
Label readAtom(this);
functor.generateAtom(this, doneReadingAtomsList);
add32(Imm32(1), repeatCount);
if (max == Quantifier::Infinity)
jump(readAtom);
else if (max == 1)
doneReadingAtomsList.append(jump());
else {
jne32(repeatCount, Imm32(max), readAtom);
doneReadingAtomsList.append(jump());
}
// (5) Quantifier failed: No more backtracking possible.
Label quantifierFailed(this);
pop(repeatCount);
failures.append(jump());
// (4) Alternative failed: Backtrack, then fall through to (2) to try again.
Label alternativeFailed(this);
pop(index);
functor.backtrack(this);
sub32(Imm32(1), repeatCount);
// (2) Verify that we have enough atoms.
doneReadingAtomsList.link(this);
jl32(repeatCount, Imm32(min), quantifierFailed);
// (3) Test the rest of the alternative.
push(index);
m_parser.parseAlternative(alternativeFailedList);
alternativeFailedList.linkTo(alternativeFailed, this);
pop();
pop(repeatCount);
}
void JIT::compileSetupVarargsFrame(Instruction* instruction, CallLinkInfo* info)
{
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().offset()
&& !m_codeBlock->symbolTable()->slowArguments();
if (canOptimize) {
emitGetVirtualRegister(arguments, regT0);
slowCase.append(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(JSValue()))));
move(TrustedImm32(-firstFreeRegister), regT1);
emitSetupVarargsFrameFastCase(*this, regT1, regT0, regT1, regT2, firstVarArgOffset, slowCase);
end.append(jump());
slowCase.link(this);
}
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);
if (canOptimize)
end.link(this);
// Profile the argument count.
load32(Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + PayloadOffset), regT2);
load8(&info->maxNumArguments, regT0);
Jump notBiggest = branch32(Above, regT0, regT2);
Jump notSaturated = branch32(BelowOrEqual, regT2, TrustedImm32(255));
move(TrustedImm32(255), regT2);
notSaturated.link(this);
store8(regT2, &info->maxNumArguments);
notBiggest.link(this);
// Initialize 'this'.
emitGetVirtualRegister(thisValue, regT0);
store64(regT0, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
addPtr(TrustedImm32(sizeof(CallerFrameAndPC)), regT1, stackPointerRegister);
}
void Generator::generateBackreference(JumpList& failures, unsigned subpatternId)
{
push(index);
push(repeatCount);
// get the start pos of the backref into repeatCount (multipurpose!)
load32(Address(output, (2 * subpatternId) * sizeof(int)), repeatCount);
Jump skipIncrement = jump();
Label topOfLoop(this);
add32(Imm32(1), index);
add32(Imm32(1), repeatCount);
skipIncrement.link(this);
// check if we're at the end of backref (if we are, success!)
Jump endOfBackRef = je32(Address(output, ((2 * subpatternId) + 1) * sizeof(int)), repeatCount);
load16(BaseIndex(input, repeatCount, MacroAssembler::TimesTwo), character);
// check if we've run out of input (this would be a can o'fail)
Jump endOfInput = je32(length, index);
je16(character, BaseIndex(input, index, TimesTwo), topOfLoop);
endOfInput.link(this);
// Failure
pop(repeatCount);
pop(index);
failures.append(jump());
// Success
endOfBackRef.link(this);
pop(repeatCount);
pop();
}
void Generator::generateLoadCharacter(JumpList& failures)
{
failures.append(je32(length, index));
load16(BaseIndex(input, index, TimesTwo), character);
}
void Generator::generateCharacterClassInverted(JumpList& matchDest, const CharacterClass& charClass)
{
Jump unicodeFail;
if (charClass.numMatchesUnicode || charClass.numRangesUnicode) {
Jump isAscii = jle32(character, Imm32(0x7f));
if (charClass.numMatchesUnicode) {
for (unsigned i = 0; i < charClass.numMatchesUnicode; ++i) {
UChar ch = charClass.matchesUnicode[i];
matchDest.append(je32(character, Imm32(ch)));
}
}
if (charClass.numRangesUnicode) {
for (unsigned i = 0; i < charClass.numRangesUnicode; ++i) {
UChar lo = charClass.rangesUnicode[i].begin;
UChar hi = charClass.rangesUnicode[i].end;
Jump below = jl32(character, Imm32(lo));
matchDest.append(jle32(character, Imm32(hi)));
below.link(this);
}
}
unicodeFail = jump();
isAscii.link(this);
}
if (charClass.numRanges) {
unsigned matchIndex = 0;
JumpList failures;
generateCharacterClassInvertedRange(failures, matchDest, charClass.ranges, charClass.numRanges, &matchIndex, charClass.matches, charClass.numMatches);
while (matchIndex < charClass.numMatches)
matchDest.append(je32(character, Imm32((unsigned short)charClass.matches[matchIndex++])));
failures.link(this);
} else if (charClass.numMatches) {
// optimization: gather 'a','A' etc back together, can mask & test once.
Vector<char> matchesAZaz;
for (unsigned i = 0; i < charClass.numMatches; ++i) {
char ch = charClass.matches[i];
if (m_parser.ignoreCase()) {
if (isASCIILower(ch)) {
matchesAZaz.append(ch);
continue;
}
if (isASCIIUpper(ch))
continue;
}
matchDest.append(je32(character, Imm32((unsigned short)ch)));
}
if (unsigned countAZaz = matchesAZaz.size()) {
or32(Imm32(32), character);
for (unsigned i = 0; i < countAZaz; ++i)
matchDest.append(je32(character, Imm32(matchesAZaz[i])));
}
}
if (charClass.numMatchesUnicode || charClass.numRangesUnicode)
unicodeFail.link(this);
}
void JIT::compileLoadVarargs(Instruction* instruction)
{
int thisValue = instruction[3].u.operand;
int arguments = instruction[4].u.operand;
int firstFreeRegister = instruction[5].u.operand;
JumpList slowCase;
JumpList end;
bool canOptimize = m_codeBlock->usesArguments()
&& VirtualRegister(arguments) == m_codeBlock->argumentsRegister()
&& !m_codeBlock->symbolTable()->slowArguments();
if (canOptimize) {
emitLoadTag(arguments, regT1);
slowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag)));
load32(payloadFor(JSStack::ArgumentCount), regT2);
slowCase.append(branch32(Above, regT2, TrustedImm32(Arguments::MaxArguments + 1)));
// regT2: argumentCountIncludingThis
move(regT2, regT3);
neg32(regT3);
add32(TrustedImm32(firstFreeRegister - JSStack::CallFrameHeaderSize), regT3);
lshift32(TrustedImm32(3), regT3);
addPtr(callFrameRegister, regT3);
// regT3: newCallFrame
slowCase.append(branchPtr(Above, AbsoluteAddress(m_vm->interpreter->stack().addressOfEnd()), regT3));
// Initialize ArgumentCount.
store32(regT2, payloadFor(JSStack::ArgumentCount, regT3));
// Initialize 'this'.
emitLoad(thisValue, regT1, regT0);
store32(regT0, Address(regT3, OBJECT_OFFSETOF(JSValue, u.asBits.payload) + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
store32(regT1, Address(regT3, OBJECT_OFFSETOF(JSValue, u.asBits.tag) + (CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
// Copy arguments.
end.append(branchSub32(Zero, TrustedImm32(1), regT2));
// regT2: argumentCount;
Label copyLoop = label();
load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT0);
load32(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))), regT1);
store32(regT0, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
store32(regT1, BaseIndex(regT3, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) +(CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register)))));
branchSub32(NonZero, TrustedImm32(1), regT2).linkTo(copyLoop, this);
end.append(jump());
}
if (canOptimize)
slowCase.link(this);
emitLoad(thisValue, regT1, regT0);
emitLoad(arguments, regT3, regT2);
callOperation(operationLoadVarargs, regT1, regT0, regT3, regT2, firstFreeRegister);
move(returnValueRegister, regT3);
if (canOptimize)
end.link(this);
}
//
// FUNCTION: MainWindowWndProc(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for the main window.
//
LRESULT CALLBACK MainWindowWndProc(
HWND hWnd,
UINT message,
WPARAM wParam,
LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
HMENU sysMenu;
// Callback for the main window
switch (message)
{
case WM_CREATE:
{
DWORD bufferSize = 65535;
wstring buff;
buff.resize(bufferSize);
bufferSize = ::GetEnvironmentVariable(L"lala", &buff[0], bufferSize);
if (bufferSize)
{
buff.resize(bufferSize);
SetEnvironmentVariable(L"lala", NULL);
}
// Add exit option to system menu
TCHAR szDescription[INFOTIPSIZE];
StringManager.LoadString(IDS_EXIT_CAFFEINE, szDescription, INFOTIPSIZE);
sysMenu = GetSystemMenu(hWnd, FALSE);
InsertMenu(sysMenu, 2, MF_SEPARATOR, 0, L"-");
AppendMenu(sysMenu, MF_STRING, IDS_EXIT_CAFFEINE, szDescription);
WTSRegisterSessionNotification(hWnd, NOTIFY_FOR_THIS_SESSION);
app->m_WindowHandler[mainUUID] = new CaffeineClientHandler();
app->m_WindowHandler[mainUUID]->SetMainHwnd(hWnd);
// Create the child windows used for navigation
RECT rect;
GetClientRect(hWnd, &rect);
CefWindowInfo info;
CefBrowserSettings browser_settings;
browser_settings.universal_access_from_file_urls = STATE_ENABLED;
// browser_settings.file_access_from_file_urls = STATE_ENABLED;
browser_settings.web_security = STATE_DISABLED;
browser_settings.local_storage = STATE_ENABLED;
browser_settings.application_cache = STATE_DISABLED;
browser_settings.javascript_open_windows = STATE_DISABLED;
// browser_settings.accelerated_compositing = STATE_DISABLED;
// Initialize window info to the defaults for a child window
info.SetAsChild(hWnd, rect);
// Create the new child browser window
wstring URL(L"file:///stub.html?" + AppGetCommandLine()->GetSwitchValue("querystring").ToWString());
if (AppGetCommandLine()->HasSwitch("yid"))
{
URL += L"&yid=" + ExtractYID(AppGetCommandLine()->GetSwitchValue("yid").ToWString());
}
// TODO: Can we just use the same window handler (assuming we get rid of the globals and add some sync)?
CefRefPtr<CefBrowser> browser = CefBrowserHost::CreateBrowserSync(info, app->m_WindowHandler[mainUUID].get(), URL, browser_settings, NULL);
app->m_WindowHandler[mainUUID]->m_MainBrowser = browser;
mainWinBrowser = browser;
app->hwndRender = hWnd; // setup current handle to use in Show/HideWindow
CefRefPtr<CefProcessMessage> process_message = CefProcessMessage::Create("setHandle");
process_message->GetArgumentList()->SetInt(0, reinterpret_cast<int>(hWnd));
browser->SendProcessMessage(PID_RENDERER, process_message);
// Send the main window creation start time to the renderer
process_message = CefProcessMessage::Create("mainWindowCreationTime");
CefRefPtr<CefBinaryValue> startTime = CefBinaryValue::Create(&beginMainWindowCreationTime, sizeof(CefTime));
process_message->GetArgumentList()->SetBinary(0, startTime);
browser->SendProcessMessage(PID_RENDERER, process_message);
if (bufferSize)
{
process_message = CefProcessMessage::Create("lala");
process_message->GetArgumentList()->SetString(0, buff);
browser->SendProcessMessage(PID_RENDERER, process_message);
}
SetWindowLongPtr(hWnd, 0, reinterpret_cast<LONG_PTR>(new WindowExtras));
SetTimer(hWnd, IDLETIMER, IdleTimerPollIntervalMS, NULL);
SetTimer(hWnd, NETWORKTIMER, NetworkTimerPollIntervalMS, NULL);
return 0;
}
case WM_MOVE:
if (app->m_WindowHandler[mainUUID].get())
{
// TODO: Below is a hack to work around the fact that CEF isn't updating screenX and screenY. Periodically,
// TODO: check to see if they fix it.
// TODO: See issue https://code.google.com/p/chromiumembedded/issues/detail?id=1303&thanks=1303&ts=1402082749
WINDOWINFO wi = {sizeof(WINDOWINFO), 0};
GetWindowInfo(hWnd, &wi);
RECT rClient = wi.rcWindow;
CefString JS = "window.screenLeft = window.screenX = " + to_string(_Longlong(rClient.left)) + "; window.screenTop = window.screenY = " +
to_string(_Longlong(rClient.top)) + ";";
CefRefPtr<CefFrame> frame = app->m_WindowHandler[mainUUID]->GetBrowser()->GetMainFrame();
frame->ExecuteJavaScript(JS, frame->GetURL(), 0);
// TODO: Another workaround. For whatever reason, the window positions get updated when the size changes,
// TODO: but not when the window is moved.
CefWindowHandle hwnd = app->m_WindowHandler[mainUUID]->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd)
{
wi.cbSize = sizeof(WINDOWINFO);
GetWindowInfo(hwnd, &wi);
RECT rWindow = wi.rcWindow;
MoveWindow(hwnd, 0, 0, rWindow.right - rWindow.left, rWindow.bottom - rWindow.top + 1, FALSE);
MoveWindow(hwnd, 0, 0, rWindow.right - rWindow.left, rWindow.bottom - rWindow.top, FALSE);
}
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent("move");
}
break;
case WM_POWERBROADCAST:
if (app->m_WindowHandler[mainUUID].get())
{
if (wParam == PBT_APMRESUMEAUTOMATIC || wParam == PBT_APMSUSPEND)
{
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent(wParam == PBT_APMSUSPEND? "suspend" : "resume");
// Do we really need a return value?
return TRUE;
}
}
break;
case WM_WTSSESSION_CHANGE:
if (app->m_WindowHandler[mainUUID].get())
{
string eventName;
switch(wParam)
{
// Used
case WTS_SESSION_LOGON:
eventName = "os:logon";
break;
// Used
case WTS_SESSION_LOGOFF:
eventName = "os:logoff";
break;
// Used
case WTS_SESSION_LOCK:
eventName = "os:locked";
break;
// Used
case WTS_SESSION_UNLOCK:
eventName = "os:unlocked";
break;
}
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent(eventName);
}
break;
case WM_PAINT:
{
//RECT cr = {0,};
//::GetClientRect(hWnd, &cr);
//::InvalidateRect(hWnd, &cr, FALSE);
hdc = BeginPaint(hWnd, &ps);
EndPaint(hWnd, &ps);
return 0;
}
case WM_ACTIVATE:
if (app->m_WindowHandler[mainUUID].get() && app->m_WindowHandler[mainUUID]->GetBrowser())
{
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent((LOWORD(wParam)>0)? "activated" : "deactivated");
}
break;
case WM_SETFOCUS:
if (app->m_WindowHandler[mainUUID].get() && app->m_WindowHandler[mainUUID]->GetBrowser())
{
// Pass focus to the browser window
CefWindowHandle hwnd = app->m_WindowHandler[mainUUID]->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) PostMessage(hwnd, message, wParam, lParam);
}
return 0;
case WM_SIZE:
// Minimizing resizes the window to 0x0 which causes our layout to go all
// screwy, so we just ignore it.
if (wParam != SIZE_MINIMIZED && app->m_WindowHandler[mainUUID].get() &&
app->m_WindowHandler[mainUUID]->GetBrowser())
{
CefWindowHandle hwnd = app->m_WindowHandler[mainUUID]->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd)
{
// This will send a WM_SIZE and WM_PAINT message to the render process
SetWindowPos(hwnd, NULL, 0, 0, LOWORD(lParam), HIWORD(lParam), SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOZORDER);
return 0;
}
}
break;
case WM_ERASEBKGND:
if (app->m_WindowHandler[mainUUID].get() && app->m_WindowHandler[mainUUID]->GetBrowser()) {
CefWindowHandle hwnd =
app->m_WindowHandler[mainUUID]->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) {
// Dont erase the background if the browser window has been loaded
// (this avoids flashing)
return 0;
}
}
break;
case WM_SYSCOMMAND:
if (wParam == IDS_EXIT_CAFFEINE) {
PostMessage(hWnd, WM_CLOSE, g_exitCode, 0);
return 0;
}
break;
case WM_COMMAND:
// Currently only option from the context menu is to exit, hence the fall through to the WM_CLOSE
wParam = g_exitCode;
case WM_CLOSE:
{
if (devMode || enableClose)
{
wParam = g_exitCode;
}
CefRefPtr<CaffeineClientHandler> handler = app->m_WindowHandler[mainUUID].get();
if (handler && !handler->IsClosing()) {
if (wParam == g_exitCode) // Jump list exit
{
for (map<string, CefRefPtr<CaffeineClientHandler> >::iterator it=app->m_WindowHandler.begin(); it!=app->m_WindowHandler.end(); ++it)
{
if(it->second.get())
{
CefRefPtr<CefBrowser> browser = it->second->GetBrowser();
browser->GetHost()->CloseBrowser(false);
}
}
//CefRefPtr<CefBrowser> browser = handler->GetBrowser();
//if (browser.get()) {
// browser->GetHost()->CloseBrowser(false);
//}
} else {
ShowWindow(hWnd, SW_MINIMIZE);
}
return 0;
}
break;
}
case WM_TIMER:
{
if(IDLETIMER == wParam)
{
// TODO: Check timer id
LASTINPUTINFO lif = {sizeof(LASTINPUTINFO), 0};
GetLastInputInfo(&lif);
UINT IdleTimePassed = GetTickCount() - lif.dwTime;
WindowExtras *pWE = reinterpret_cast<WindowExtras *>(::GetWindowLongPtr(hWnd, 0));
bool CurrentlyIdle = (pWE->IdleTimeThreshold < IdleTimePassed);
if(CurrentlyIdle != pWE->IsIdle)
{
const CefString EventName = (CurrentlyIdle? "startIdle" : "stopIdle");
pWE->IsIdle = CurrentlyIdle;
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent(EventName);
}
}
// TODO: When we drop XP support, we can use COM and get network connectivity events.
else if(NETWORKTIMER == wParam)
{
WindowExtras *pWE = reinterpret_cast<WindowExtras *>(::GetWindowLongPtr(hWnd, 0));
bool CurrentlyConnected = pWE->NetworkAvailable();
if(CurrentlyConnected != pWE->IsConnected)
{
const CefString EventName = (CurrentlyConnected? "os:online" : "os:offline");
pWE->IsConnected = CurrentlyConnected;
app->m_WindowHandler[mainUUID]->CreateAndDispatchCustomEvent(EventName);
}
}
break;
}
case WM_DESTROY:
{
WTSUnRegisterSessionNotification(hWnd);
// The frame window has exited
if (!devMode)
{
jumpList.RemoveAllTasks();
}
KillTimer(hWnd, IDLETIMER);
KillTimer(hWnd, NETWORKTIMER);
WindowExtras *pWE = reinterpret_cast<WindowExtras *>(::GetWindowLongPtr(hWnd, 0));
delete pWE;
SetWindowLongPtr(hWnd, 0, 0);
SetShutdownFlag(true);
PostQuitMessage(0);
return 0;
}
case WM_GETMINMAXINFO:
{
LPMINMAXINFO minmaxInfoPtr = (LPMINMAXINFO) lParam;
minmaxInfoPtr->ptMinTrackSize.x = MAIN_WINDOW_MIN_WIN_WIDTH;
minmaxInfoPtr->ptMinTrackSize.y = MAIN_WINDOW_MIN_WIN_HEIGHT;
// Keep the width the same
RECT rect;
GetWindowRect(hWnd, &rect);
minmaxInfoPtr->ptMaxSize.x = (rect.right - rect.left);
// Keep window at same position
minmaxInfoPtr->ptMaxPosition.x = rect.left;
minmaxInfoPtr->ptMaxPosition.y = 0;
SystemParametersInfo( SPI_GETWORKAREA, 0, &rect, 0 );
minmaxInfoPtr->ptMaxSize.y = (rect.bottom - rect.top);
return 0;
}
case WM_COPYDATA:
{
BOOL retval = FALSE;
PCOPYDATASTRUCT pCds = reinterpret_cast<PCOPYDATASTRUCT>(lParam);
if (pCds->dwData == WM_PENDING_YID)
{
if (app->m_WindowHandler[mainUUID].get() && app->m_WindowHandler[mainUUID]->GetBrowser())
{
CefRefPtr<CefFrame> frame = app->m_WindowHandler[mainUUID]->GetBrowser()->GetMainFrame();
wstring code = L"Caffeine.pendingYIDs.push(\"";
// TODO: Escape this ... otherwise there's an XSS
code += static_cast<LPWSTR>(pCds->lpData);
code += L"\");";
frame->ExecuteJavaScript(code, frame->GetURL(), 0);
}
retval = TRUE;
}
return retval;
}
case CAFFEINE_SOCKETS_MSG:
CefRefPtr<CefProcessMessage> process_message = CefProcessMessage::Create("invokeSocketMethod");
process_message->GetArgumentList()->SetInt(0, wParam);
if (WSAGETSELECTERROR(lParam))
{
process_message->GetArgumentList()->SetString(1, "error");
process_message->GetArgumentList()->SetInt(2, WSAGETSELECTERROR(lParam));
}
else
{
// No error
switch(WSAGETSELECTEVENT(lParam))
{
case FD_CONNECT:
process_message->GetArgumentList()->SetString(1, "connect");
break;
case FD_CLOSE:
process_message->GetArgumentList()->SetString(1, "close");
break;
case FD_READ:
process_message->GetArgumentList()->SetString(1, "read");
break;
case FD_WRITE:
process_message->GetArgumentList()->SetString(1, "write");
break;
}
}
mainWinBrowser->SendProcessMessage(PID_RENDERER, process_message);
break;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
void Generator::generateParenthesesNonGreedy(JumpList& failures, Label start, Jump success, Jump fail)
{
jump(start);
success.link(this);
failures.append(fail);
}
void Generator::terminateDisjunction(JumpList& successes)
{
successes.link(this);
}
void JIT::emitSlow_op_urshift(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned op1 = currentInstruction[2].u.operand;
unsigned op2 = currentInstruction[3].u.operand;
if (isOperandConstantImmediateInt(op2)) {
int shift = getConstantOperand(op2).asInt32();
// op1 = regT0
linkSlowCase(iter); // int32 check
if (supportsFloatingPointTruncate()) {
JumpList failures;
failures.append(emitJumpIfNotImmediateNumber(regT0)); // op1 is not a double
addPtr(tagTypeNumberRegister, regT0);
movePtrToDouble(regT0, fpRegT0);
failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0));
if (shift)
urshift32(Imm32(shift & 0x1f), regT0);
if (shift < 0 || !(shift & 31))
failures.append(branch32(LessThan, regT0, Imm32(0)));
emitFastArithReTagImmediate(regT0, regT0);
emitPutVirtualRegister(dst, regT0);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift));
failures.link(this);
}
if (shift < 0 || !(shift & 31))
linkSlowCase(iter); // failed to box in hot path
} else {
// op1 = regT0
// op2 = regT1
if (!isOperandConstantImmediateInt(op1)) {
linkSlowCase(iter); // int32 check -- op1 is not an int
if (supportsFloatingPointTruncate()) {
JumpList failures;
failures.append(emitJumpIfNotImmediateNumber(regT0)); // op1 is not a double
addPtr(tagTypeNumberRegister, regT0);
movePtrToDouble(regT0, fpRegT0);
failures.append(branchTruncateDoubleToInt32(fpRegT0, regT0));
failures.append(emitJumpIfNotImmediateInteger(regT1)); // op2 is not an int
emitFastArithImmToInt(regT1);
urshift32(regT1, regT0);
failures.append(branch32(LessThan, regT0, Imm32(0)));
emitFastArithReTagImmediate(regT0, regT0);
emitPutVirtualRegister(dst, regT0);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_rshift));
failures.link(this);
}
}
linkSlowCase(iter); // int32 check - op2 is not an int
linkSlowCase(iter); // Can't represent unsigned result as an immediate
}
JITStubCall stubCall(this, cti_op_urshift);
stubCall.addArgument(op1, regT0);
stubCall.addArgument(op2, regT1);
stubCall.call(dst);
}
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()
&& arguments == m_codeBlock->argumentsRegister().offset()
&& !m_codeBlock->symbolTable()->slowArguments();
if (canOptimize) {
emitGetVirtualRegister(arguments, regT0);
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);
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(Above, AbsoluteAddress(m_vm->addressOfStackLimit()), regT1));
// Initialize ArgumentCount.
store32(regT0, Address(regT1, JSStack::ArgumentCount * static_cast<int>(sizeof(Register)) + OBJECT_OFFSETOF(EncodedValueDescriptor, asBits.payload)));
// Initialize 'this'.
emitGetVirtualRegister(thisValue, regT2);
store64(regT2, Address(regT1, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))));
// Copy arguments.
signExtend32ToPtr(regT0, regT0);
end.append(branchSub64(Zero, TrustedImm32(1), regT0));
// regT0: argumentCount
Label copyLoop = label();
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))));
branchSub64(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
end.append(jump());
}
if (canOptimize)
slowCase.link(this);
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);
}