int32_t emitBindCall(CodeBlock& mainCode, CodeBlock& stubsCode,
SrcKey srcKey, const Func* funcd, int numArgs) {
// If this is a call to a builtin and we don't need any argument
// munging, we can skip the prologue system and do it inline.
if (isNativeImplCall(funcd, numArgs)) {
StoreImmPatcher patchIP(mainCode, (uint64_t)mainCode.frontier(), reg::rax,
cellsToBytes(numArgs) + AROFF(m_savedRip),
rVmSp);
assert(funcd->numLocals() == funcd->numParams());
assert(funcd->numIterators() == 0);
Asm a { mainCode };
emitLea(a, rVmSp[cellsToBytes(numArgs)], rVmFp);
emitCheckSurpriseFlagsEnter(mainCode, stubsCode, true, mcg->fixupMap(),
Fixup(0, numArgs));
// rVmSp is already correctly adjusted, because there's no locals
// other than the arguments passed.
auto retval = emitNativeImpl(mainCode, funcd);
patchIP.patch(uint64_t(mainCode.frontier()));
return retval;
}
Asm a { mainCode };
if (debug) {
auto off = cellsToBytes(numArgs) + AROFF(m_savedRip);
emitImmStoreq(a, kUninitializedRIP, rVmSp[off]);
}
// Stash callee's rVmFp into rStashedAR for the callee's prologue
emitLea(a, rVmSp[cellsToBytes(numArgs)], rStashedAR);
emitBindCallHelper(mainCode, stubsCode, srcKey, funcd, numArgs);
return 0;
}
void FixupStruct(UStruct* Struct, void* Dest, const void* Src)
{
if (Struct == Struct_SlateColor)
{
*((FSlateColor*)Dest) = Fixup(*(FSlateColor*)Src);
return;
}
for (TFieldIterator<UProperty> PropertyIt(Struct, EFieldIteratorFlags::IncludeSuper); PropertyIt; ++PropertyIt)
{
auto Property = *PropertyIt;
if (UStructProperty* p = Cast<UStructProperty>(Property))
{
FixupStruct(p->Struct, p->ContainerPtrToValuePtr<void>(Dest), p->ContainerPtrToValuePtr<void>(Src));
}
}
}
void AllocateVariables(){
char msg[80];
tObj *VRef;
VRef = FirstVar();
while(VRef != NULL){
if(VRef->Val == 0){
strcpy(msg, "Variable '");
strcat(msg, VRef->Name);
strcat(msg, "' is declared but never used.");
Warning(msg);
}
else{
Fixup(VRef->Val); //
//printf("\n%s", VRef->Name);
PC++;
}
VRef = NextVar();
}
}
void AddStructure(const Header* header, const Strings& strings, Structure*& listHead)
{
Structure* const p = (Structure*)calloc(1, sizeof(Structure)); // freed in Cleanup
p->header = *header;
if(listHead)
{
// insert at end of list to preserve order of caches/slots
Structure* last = listHead;
while(last->next)
last = last->next;
last->next = p;
}
else
listHead = p;
FieldInitializer fieldInitializer(header, strings);
VisitFields(*p, fieldInitializer);
Fixup(*p);
}
void cgCheckSurpriseAndStack(IRLS& env, const IRInstruction* inst) {
auto const fp = srcLoc(env, inst, 0).reg();
auto const extra = inst->extra<CheckSurpriseAndStack>();
auto const func = extra->func;
auto const off = func->getEntryForNumArgs(extra->argc) - func->base();
auto const fixup = Fixup(off, func->numSlotsInFrame());
auto& v = vmain(env);
auto const sf = v.makeReg();
auto const needed_top = v.makeReg();
v << lea{fp[-cellsToBytes(func->maxStackCells())], needed_top};
v << cmpqm{needed_top, rvmtl()[rds::kSurpriseFlagsOff], sf};
unlikelyIfThen(v, vcold(env), CC_AE, sf, [&] (Vout& v) {
auto const stub = tc::ustubs().functionSurprisedOrStackOverflow;
auto const done = v.makeBlock();
v << vinvoke{CallSpec::stub(stub), v.makeVcallArgs({}), v.makeTuple({}),
{done, label(env, inst->taken())}, fixup };
v = done;
});
}
void Merging(Payload payload, const T& obj, uint16_t version = bond::v1, bool mergeByDeserialize = true)
{
Reader merged = Merge<Reader, Writer>(payload, obj, version);
// Deserialize merged into T and compare against obj
{
T to;
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4127) // C4127: conditional expression is constant
#endif
if (boost::mpl::count_if<typename T::Schema::fields, is_optional_field<_> >::value == 0)
#ifdef _MSC_VER
#pragma warning(pop)
#endif
{
to = InitRandom<T>();
Fixup(to);
}
Deserialize(merged, to);
UT_AssertIsTrue(Equal(obj, to));
}
// Deserialize merged into Payload and compare against combination of the
// orginal payload and the obj.
{
Payload to;
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4127) // C4127: conditional expression is constant
#endif
if (boost::mpl::count_if<typename Payload::Schema::fields, is_optional_field<_> >::value == 0)
#ifdef _MSC_VER
#pragma warning(pop)
#endif
{
to = InitRandom<Payload>();
Fixup(to);
}
Deserialize(merged, to);
if (mergeByDeserialize)
{
// Will fail an assert without
// #define BOND_UNIT_TEST_ONLY_PERMIT_OBJECT_REUSE
Deserialize(Serialize<Reader, Writer>(obj, version), payload);
UT_AssertIsTrue(Equal(payload, to));
}
else
{
UT_AssertIsTrue(MergedEqual(payload, to, obj));
}
}
}
void cgCall(IRLS& env, const IRInstruction* inst) {
auto const sp = srcLoc(env, inst, 0).reg();
auto const fp = srcLoc(env, inst, 1).reg();
auto const extra = inst->extra<Call>();
auto const callee = extra->callee;
auto const argc = extra->numParams;
auto& v = vmain(env);
auto& vc = vcold(env);
auto const catchBlock = label(env, inst->taken());
auto const calleeSP = sp[cellsToBytes(extra->spOffset.offset)];
auto const calleeAR = calleeSP + cellsToBytes(argc);
v << store{fp, calleeAR + AROFF(m_sfp)};
v << storeli{safe_cast<int32_t>(extra->after), calleeAR + AROFF(m_soff)};
if (extra->fcallAwait) {
// This clobbers any flags that might have already been set on the callee
// AR (e.g., by SpillFrame), but this is okay because there should never be
// any conflicts; see the documentation in act-rec.h.
auto const imm = static_cast<int32_t>(
ActRec::encodeNumArgsAndFlags(argc, ActRec::Flags::IsFCallAwait)
);
v << storeli{imm, calleeAR + AROFF(m_numArgsAndFlags)};
}
auto const isNativeImplCall = callee &&
callee->builtinFuncPtr() &&
!callee->nativeFuncPtr() &&
argc == callee->numParams();
if (isNativeImplCall) {
// The assumption here is that for builtins, the generated func contains
// only a single opcode (NativeImpl), and there are no non-argument locals.
if (do_assert) {
assertx(argc == callee->numLocals());
assertx(callee->numIterators() == 0);
auto addr = callee->getEntry();
while (peek_op(addr) == Op::AssertRATL) {
addr += instrLen(addr);
}
assertx(peek_op(addr) == Op::NativeImpl);
assertx(addr + instrLen(addr) ==
callee->unit()->entry() + callee->past());
}
v << store{v.cns(mcg->ustubs().retHelper), calleeAR + AROFF(m_savedRip)};
if (callee->attrs() & AttrMayUseVV) {
v << storeqi{0, calleeAR + AROFF(m_invName)};
}
v << lea{calleeAR, rvmfp()};
emitCheckSurpriseFlagsEnter(v, vc, fp, Fixup(0, argc), catchBlock);
auto const builtinFuncPtr = callee->builtinFuncPtr();
TRACE(2, "Calling builtin preClass %p func %p\n",
callee->preClass(), builtinFuncPtr);
// We sometimes call this while curFunc() isn't really the builtin, so make
// sure to record the sync point as if we are inside the builtin.
if (FixupMap::eagerRecord(callee)) {
auto const syncSP = v.makeReg();
v << lea{calleeSP, syncSP};
emitEagerSyncPoint(v, callee->getEntry(), rvmtl(), rvmfp(), syncSP);
}
// Call the native implementation. This will free the locals for us in the
// normal case. In the case where an exception is thrown, the VM unwinder
// will handle it for us.
auto const done = v.makeBlock();
v << vinvoke{CallSpec::direct(builtinFuncPtr), v.makeVcallArgs({{rvmfp()}}),
v.makeTuple({}), {done, catchBlock}, Fixup(0, argc)};
env.catch_calls[inst->taken()] = CatchCall::CPP;
v = done;
// The native implementation already put the return value on the stack for
// us, and handled cleaning up the arguments. We have to update the frame
// pointer and the stack pointer, and load the return value into the return
// register so the trace we are returning to has it where it expects.
// TODO(#1273094): We should probably modify the actual builtins to return
// values via registers using the C ABI and do a reg-to-reg move.
loadTV(v, inst->dst(), dstLoc(env, inst, 0), rvmfp()[AROFF(m_r)], true);
v << load{rvmfp()[AROFF(m_sfp)], rvmfp()};
emitRB(v, Trace::RBTypeFuncExit, callee->fullName()->data());
return;
}
v << lea{calleeAR, rvmfp()};
if (RuntimeOption::EvalHHIRGenerateAsserts) {
v << syncvmsp{v.cns(0x42)};
constexpr uint64_t kUninitializedRIP = 0xba5eba11acc01ade;
emitImmStoreq(v, kUninitializedRIP, rvmfp()[AROFF(m_savedRip)]);
}
// Emit a smashable call that initially calls a recyclable service request
// stub. The stub and the eventual targets take rvmfp() as an argument,
// pointing to the callee ActRec.
auto const target = callee
? mcg->ustubs().immutableBindCallStub
: mcg->ustubs().bindCallStub;
auto const done = v.makeBlock();
v << callphp{target, php_call_regs(), {{done, catchBlock}}};
env.catch_calls[inst->taken()] = CatchCall::PHP;
v = done;
auto const dst = dstLoc(env, inst, 0);
v << defvmret{dst.reg(0), dst.reg(1)};
}
void
FixupMap::recordSyncPoint(CodeAddress frontier, Offset pcOff, Offset spOff) {
m_pendingFixups.push_back(PendingFixup(frontier, Fixup(pcOff, spOff)));
}
FSlateColor UJavascriptEditorStyle::GetSlateColor(const FName& StyleName)
{
return Fixup(FEditorStyle::Get().GetSlateColor(StyleName));
}
FSlateBrush UJavascriptEditorStyle::GetBrush(const FName& StyleName)
{
auto Brush = FEditorStyle::Get().GetBrush(StyleName);
return Brush ? Fixup(*Brush) : FSlateBrush();
}