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[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 main() {
struct long32 first, second, working;
char s[20];
while (TRUE) {
printf ("\r\n\r\nEnter the first number: ");
get_string (s,20);
atol32 (s,&first);
printf ("\r\nEnter the second number: ");
get_string (s,20);
atol32 (s,&second);
printf ("\r\n\r\nA: ");
print_long32 (&first);
printf ("\r\nB: ");
print_long32 (&second);
working.hi = first.hi;
working.lo = first.lo;
add32 (&working, &second);
printf ("\r\na + b = ");
print_long32 (&working);
working.hi = first.hi;
working.lo = first.lo;
sub32 (&working, &second);
printf ("\r\na - b = ");
print_long32 (&working);
working.hi = first.hi;
working.lo = first.lo;
mul32 (&working, &second);
printf ("\r\na * b = ");
print_long32 (&working);
working.hi = first.hi;
working.lo = first.lo;
div32 (&working, &second);
printf ("\r\na / b = ");
print_long32 (&working);
rem32 (&first, &second, &working);
printf ("\r\na modulus b = ");
print_long32 (&working);
}
}
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);
}
void JITCompiler::emitCount(AbstractSamplingCounter& counter, uint32_t increment)
{
intptr_t hiWord = reinterpret_cast<intptr_t>(counter.addressOfCounter()) + sizeof(int32_t);
add32(TrustedImm32(increment), AbsoluteAddress(counter.addressOfCounter()));
addWithCarry32(TrustedImm32(0), AbsoluteAddress(reinterpret_cast<void*>(hiWord)));
}
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;
bool canOptimize = m_codeBlock->usesArguments()
&& arguments == m_codeBlock->argumentsRegister()
&& !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);
add32(TrustedImm32(firstFreeRegister + JSStack::CallFrameHeaderSize), regT1);
lshift32(TrustedImm32(3), regT1);
addPtr(callFrameRegister, regT1);
// regT1: newCallFrame
slowCase.append(branchPtr(Below, AbsoluteAddress(m_vm->interpreter->stack().addressOfEnd()), 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.
neg32(regT0);
signExtend32ToPtr(regT0, regT0);
end.append(branchAdd64(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))));
branchAdd64(NonZero, TrustedImm32(1), regT0).linkTo(copyLoop, this);
end.append(jump());
}
if (canOptimize)
slowCase.link(this);
JITStubCall stubCall(this, cti_op_load_varargs);
stubCall.addArgument(thisValue, regT0);
stubCall.addArgument(arguments, regT0);
stubCall.addArgument(Imm32(firstFreeRegister));
stubCall.call(regT1);
if (canOptimize)
end.link(this);
}
void test32 (void)
{
if (add32 (arr32) != arr32[0] + arr32[1] + arr32[2])
__builtin_abort();
}
