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https://github.com/ZDoom/gzdoom.git
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- made OP_NEW a builtin function instead of an opcode.
The code was present 3 times due to the JIt, and this is not something that benefits from being a real opcode, even in the interpreted case.
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parent
cc73449d29
commit
4126f8ce72
6 changed files with 64 additions and 113 deletions
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@ -7,6 +7,7 @@ xx(Super)
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xx(Object)
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xx(Actor)
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xx(Class)
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xx(Thinker)
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xx(Untranslated)
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@ -343,6 +344,7 @@ xx(RandomPick)
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xx(FRandomPick)
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xx(SetRandomSeed)
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xx(BuiltinRandomSeed)
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xx(BuiltinNew)
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xx(GetClass)
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xx(GetParentClass)
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xx(GetClassName)
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@ -5138,9 +5138,54 @@ FxExpression *FxNew::Resolve(FCompileContext &ctx)
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//==========================================================================
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//
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//
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// The CVAR is for finding places where thinkers are created.
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// Those will require code changes in ZScript 4.0.
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//
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//==========================================================================
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CVAR(Bool, vm_warnthinkercreation, false, 0)
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static DObject *BuiltinNew(PClass *cls, int outerside, int backwardscompatible)
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{
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if (cls->ConstructNative == nullptr)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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return nullptr;
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}
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if (cls->bAbstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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return nullptr;
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}
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// Creating actors here must be outright prohibited,
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if (cls->IsDescendantOf(NAME_Actor))
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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return nullptr;
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}
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if (vm_warnthinkercreation && cls->IsDescendantOf(NAME_Thinker))
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{
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// This must output a diagnostic warning
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//ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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//return nullptr;
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}
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// [ZZ] validate readonly and between scope construction
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if (outerside) FScopeBarrier::ValidateNew(cls, outerside - 1);
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auto object = cls->CreateNew();
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if (backwardscompatible && object->IsKindOf(NAME_Thinker))
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{
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// Todo: Link thinker to current primary level.
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}
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return object;
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}
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DEFINE_ACTION_FUNCTION_NATIVE(DObject, BuiltinNew, BuiltinNew)
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{
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PARAM_PROLOGUE;
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PARAM_CLASS(cls, DObject);
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PARAM_INT(outerside);
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PARAM_INT(compatible);
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ACTION_RETURN_OBJECT(BuiltinNew(cls, outerside, compatible));
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}
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ExpEmit FxNew::Emit(VMFunctionBuilder *build)
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{
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@ -5148,18 +5193,27 @@ ExpEmit FxNew::Emit(VMFunctionBuilder *build)
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from.Free(build);
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ExpEmit to(build, REGT_POINTER);
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// Call DecoRandom to generate a random number.
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VMFunction *callfunc;
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auto sym = FindBuiltinFunction(NAME_BuiltinNew);
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assert(sym);
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callfunc = sym->Variants[0].Implementation;
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FunctionCallEmitter emitters(callfunc);
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int outerside = -1;
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if (!from.Konst)
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{
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int outerside = FScopeBarrier::SideFromFlags(CallingFunction->Variants[0].Flags);
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if (outerside == FScopeBarrier::Side_Virtual)
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outerside = FScopeBarrier::SideFromObjectFlags(CallingFunction->OwningClass->ScopeFlags);
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build->Emit(OP_NEW, to.RegNum, from.RegNum, outerside+1); // +1 to ensure it's not 0
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}
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else
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{
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build->Emit(OP_NEW_K, to.RegNum, from.RegNum);
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}
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return to;
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emitters.AddParameter(from, false);
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emitters.AddParameterIntConst(outerside);
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emitters.AddParameterIntConst(1); // Todo: 1 only if version < 4.0.0
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emitters.AddReturn(REGT_POINTER);
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return emitters.EmitCall(build);
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}
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//==========================================================================
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@ -244,82 +244,6 @@ void JitCompiler::EmitRETI()
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}
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}
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static DObject* CreateNew(PClass *cls, int c)
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{
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if (!cls->ConstructNative)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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}
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else if (cls->bAbstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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}
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else if (cls->IsDescendantOf(NAME_Actor)) // Creating actors here must be outright prohibited
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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}
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// [ZZ] validate readonly and between scope construction
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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return cls->CreateNew();
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}
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void JitCompiler::EmitNEW()
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{
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auto result = newResultIntPtr();
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auto call = CreateCall<DObject*, PClass*, int>(CreateNew);
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call->setRet(0, result);
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call->setArg(0, regA[B]);
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call->setArg(1, asmjit::Imm(C));
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cc.mov(regA[A], result);
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}
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static void ThrowNewK(PClass *cls, int c)
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{
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if (!cls->ConstructNative)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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}
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else if (cls->bAbstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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}
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else // if (cls->IsDescendantOf(NAME_Actor)) // Creating actors here must be outright prohibited
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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}
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}
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static DObject *CreateNewK(PClass *cls, int c)
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{
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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return cls->CreateNew();
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}
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void JitCompiler::EmitNEW_K()
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{
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PClass *cls = (PClass*)konsta[B].v;
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auto regcls = newTempIntPtr();
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cc.mov(regcls, asmjit::imm_ptr(cls));
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if (!cls->ConstructNative || cls->bAbstract || cls->IsDescendantOf(NAME_Actor))
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{
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auto call = CreateCall<void, PClass*, int>(ThrowNewK);
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call->setArg(0, regcls);
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}
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else
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{
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auto result = newResultIntPtr();
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auto call = CreateCall<DObject*, PClass*, int>(CreateNewK);
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call->setRet(0, result);
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call->setArg(0, regcls);
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call->setArg(1, asmjit::Imm(C));
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cc.mov(regA[A], result);
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}
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}
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void JitCompiler::EmitTHROW()
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{
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EmitThrowException(EVMAbortException(BC));
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@ -757,34 +757,6 @@ static int ExecScriptFunc(VMFrameStack *stack, VMReturn *ret, int numret)
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assert(0);
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NEXTOP;
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OP(NEW_K):
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OP(NEW):
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{
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b = B;
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PClass *cls = (PClass*)(pc->op == OP_NEW ? reg.a[b] : konsta[b].v);
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if (cls->ConstructNative == nullptr)
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{
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ThrowAbortException(X_OTHER, "Class %s requires native construction", cls->TypeName.GetChars());
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return 0;
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}
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if (cls->bAbstract)
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{
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ThrowAbortException(X_OTHER, "Cannot instantiate abstract class %s", cls->TypeName.GetChars());
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return 0;
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}
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// Creating actors here must be outright prohibited,
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if (cls->IsDescendantOf(NAME_Actor))
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{
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ThrowAbortException(X_OTHER, "Cannot create actors with 'new'");
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return 0;
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}
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// [ZZ] validate readonly and between scope construction
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c = C;
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if (c) FScopeBarrier::ValidateNew(cls, c - 1);
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reg.a[a] = cls->CreateNew();
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NEXTOP;
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}
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#if 0
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OP(TRY):
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assert(try_depth < MAX_TRY_DEPTH);
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@ -108,8 +108,6 @@ xx(SCOPE, scope, RPI8, NOP, 0, 0) // Scope check at runtime.
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xx(RESULT, result, __BCP, NOP, 0, 0) // Result should go in register encoded in BC (in caller, after CALL)
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xx(RET, ret, I8BCP, NOP, 0, 0) // Copy value from register encoded in BC to return value A, possibly returning
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xx(RETI, reti, I8I16, NOP, 0, 0) // Copy immediate from BC to return value A, possibly returning
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xx(NEW, new, RPRPI8, NOP, 0, 0)
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xx(NEW_K, new, RPKP, NOP, 0, 0)
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//xx(TRY, try, I24, NOP, 0, 0) // When an exception is thrown, start searching for a handler at pc + ABC
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//xx(UNTRY, untry, I8, NOP, 0, 0) // Pop A entries off the exception stack
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xx(THROW, throw, THROW, NOP, 0, 0) // A == 0: Throw exception object pB
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@ -383,6 +383,7 @@ class Object native
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native bool bDestroyed;
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// These must be defined in some class, so that the compiler can find them. Object is just fine, as long as they are private to external code.
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private native static Object BuiltinNew(Class<Object> cls, int outerclass, int compatibility);
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private native static int BuiltinRandom(voidptr rng, int min, int max);
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private native static double BuiltinFRandom(voidptr rng, double min, double max);
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private native static int BuiltinRandom2(voidptr rng, int mask);
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