mirror of
https://github.com/ZDoom/gzdoom-gles.git
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- add support in the jit compiler to do direct native calls using the x64 calling convention
This commit is contained in:
Magnus Norddahl
parent
a5ee673c91
commit
3ba6290419
4 changed files with 234 additions and 274 deletions
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@ -1,7 +1,6 @@
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#include "jit.h"
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#include "jitintern.h"
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#include <map>
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extern PString *TypeString;
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extern PStruct *TypeVector2;
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@ -826,242 +825,3 @@ void JitCompiler::EmitNOP()
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{
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cc.nop();
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}
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#if 0
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void JitCompiler::SetupNative()
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{
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using namespace asmjit;
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ResetTemp();
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static const char *marks = "=======================================================";
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cc.comment("", 0);
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cc.comment(marks, 56);
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FString funcname;
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funcname.Format("Function: %s", sfunc->PrintableName.GetChars());
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cc.comment(funcname.GetChars(), funcname.Len());
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cc.comment(marks, 56);
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cc.comment("", 0);
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konstd = sfunc->KonstD;
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konstf = sfunc->KonstF;
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konsts = sfunc->KonstS;
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konsta = sfunc->KonstA;
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CreateRegisters();
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func = cc.addFunc(CreateFuncSignature(sfunc));
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int argsPos = 0;
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int regd = 0, regf = 0, regs = 0, rega = 0;
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for (unsigned int i = 0; i < sfunc->Proto->ArgumentTypes.Size(); i++)
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{
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const PType *type = sfunc->Proto->ArgumentTypes[i];
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if (sfunc->ArgFlags[i] & (VARF_Out | VARF_Ref))
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{
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cc.setArg(argsPos++, regA[rega++]);
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}
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else if (type == TypeVector2)
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{
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cc.setArg(argsPos++, regF[regf++]);
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cc.setArg(argsPos++, regF[regf++]);
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}
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else if (type == TypeVector3)
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{
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cc.setArg(argsPos++, regF[regf++]);
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cc.setArg(argsPos++, regF[regf++]);
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cc.setArg(argsPos++, regF[regf++]);
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}
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else if (type == TypeFloat64)
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{
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cc.setArg(argsPos++, regF[regf++]);
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}
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else if (type == TypeString)
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{
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cc.setArg(argsPos++, regS[regs++]);
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}
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else if (type->isIntCompatible())
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{
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cc.setArg(argsPos++, regA[regd++]);
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}
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else
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{
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cc.setArg(argsPos++, regA[rega++]);
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}
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}
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if (sfunc->NumArgs != argsPos || regd > sfunc->NumRegD || regf > sfunc->NumRegF || regs > sfunc->NumRegS || rega > sfunc->NumRegA)
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I_FatalError("JIT: sfunc->NumArgs != argsPos || regd > sfunc->NumRegD || regf > sfunc->NumRegF || regs > sfunc->NumRegS || rega > sfunc->NumRegA");
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for (int i = regd; i < sfunc->NumRegD; i++)
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cc.xor_(regD[i], regD[i]);
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for (int i = regf; i < sfunc->NumRegF; i++)
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cc.xorpd(regF[i], regF[i]);
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for (int i = regs; i < sfunc->NumRegS; i++)
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cc.xor_(regS[i], regS[i]);
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for (int i = rega; i < sfunc->NumRegA; i++)
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cc.xor_(regA[i], regA[i]);
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labels.Resize(sfunc->CodeSize);
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IncrementVMCalls();
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}
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asmjit::CCFunc *JitCompiler::CodegenThunk(asmjit::X86Compiler &cc, VMScriptFunction *sfunc, void *nativefunc)
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{
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using namespace asmjit;
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static const char *marks = "=======================================================";
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cc.comment("", 0);
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cc.comment(marks, 56);
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FString funcname;
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funcname.Format("Thunk: %s", sfunc->PrintableName.GetChars());
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cc.comment(funcname.GetChars(), funcname.Len());
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cc.comment(marks, 56);
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cc.comment("", 0);
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auto unusedFunc = cc.newIntPtr("func"); // VMFunction*
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auto args = cc.newIntPtr("args"); // VMValue *params
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auto numargs = cc.newInt32("numargs"); // int numargs
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auto ret = cc.newIntPtr("ret"); // VMReturn *ret
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auto numret = cc.newInt32("numret"); // int numret
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CCFunc *func = cc.addFunc(FuncSignature5<int, VMFunction *, void *, int, void *, int>());
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cc.setArg(0, unusedFunc);
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cc.setArg(1, args);
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cc.setArg(2, numargs);
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cc.setArg(3, ret);
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cc.setArg(4, numret);
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TArray<Reg> callArgs;
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int argsPos = 0;
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for (unsigned int i = 0; i < sfunc->Proto->ArgumentTypes.Size(); i++)
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{
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const PType *type = sfunc->Proto->ArgumentTypes[i];
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if (sfunc->ArgFlags[i] & (VARF_Out | VARF_Ref))
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{
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auto reg = cc.newIntPtr();
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cc.mov(reg, x86::ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, a)));
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callArgs.Push(reg);
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}
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else if (type == TypeVector2)
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{
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for (int j = 0; j < 2; j++)
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{
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auto reg = cc.newXmmSd();
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cc.movsd(reg, x86::qword_ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, f)));
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callArgs.Push(reg);
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}
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}
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else if (type == TypeVector3)
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{
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for (int j = 0; j < 3; j++)
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{
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auto reg = cc.newXmmSd();
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cc.movsd(reg, x86::qword_ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, f)));
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callArgs.Push(reg);
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}
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}
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else if (type == TypeFloat64)
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{
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auto reg = cc.newXmmSd();
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cc.movsd(reg, x86::qword_ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, f)));
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callArgs.Push(reg);
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}
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else if (type == TypeString)
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{
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auto reg = cc.newIntPtr();
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cc.mov(reg, x86::ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, a)));
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callArgs.Push(reg);
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}
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else if (type->isIntCompatible())
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{
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auto reg = cc.newInt32();
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cc.mov(reg, x86::dword_ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, i)));
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callArgs.Push(reg);
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}
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else
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{
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auto reg = cc.newIntPtr();
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cc.mov(reg, x86::ptr(args, argsPos++ * sizeof(VMValue) + offsetof(VMValue, a)));
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callArgs.Push(reg);
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}
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}
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auto call = cc.call(imm_ptr(nativefunc), CreateFuncSignature(sfunc));
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for (unsigned int i = 0; i < callArgs.Size(); i++)
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call->setArg(i, callArgs[i]);
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cc.ret(numret);
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return func;
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}
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asmjit::FuncSignature JitCompiler::CreateFuncSignature(VMScriptFunction *sfunc)
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{
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using namespace asmjit;
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TArray<uint8_t> args;
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FString key;
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for (unsigned int i = 0; i < sfunc->Proto->ArgumentTypes.Size(); i++)
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{
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const PType *type = sfunc->Proto->ArgumentTypes[i];
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if (sfunc->ArgFlags[i] & (VARF_Out | VARF_Ref))
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{
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args.Push(TypeIdOf<void*>::kTypeId);
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key += "v";
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}
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else if (type == TypeVector2)
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{
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args.Push(TypeIdOf<double>::kTypeId);
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args.Push(TypeIdOf<double>::kTypeId);
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key += "ff";
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}
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else if (type == TypeVector3)
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{
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args.Push(TypeIdOf<double>::kTypeId);
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args.Push(TypeIdOf<double>::kTypeId);
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args.Push(TypeIdOf<double>::kTypeId);
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key += "fff";
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}
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else if (type == TypeFloat64)
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{
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args.Push(TypeIdOf<double>::kTypeId);
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key += "f";
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}
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else if (type == TypeString)
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{
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args.Push(TypeIdOf<void*>::kTypeId);
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key += "s";
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}
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else if (type->isIntCompatible())
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{
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args.Push(TypeIdOf<int>::kTypeId);
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key += "i";
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}
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else
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{
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args.Push(TypeIdOf<void*>::kTypeId);
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key += "v";
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}
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}
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// FuncSignature only keeps a pointer to its args array. Keep a copy of each args array variant.
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static std::map<FString, std::unique_ptr<TArray<uint8_t>>> argsCache;
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std::unique_ptr<TArray<uint8_t>> &cachedArgs = argsCache[key];
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if (!cachedArgs) cachedArgs.reset(new TArray<uint8_t>(args));
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FuncSignature signature;
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signature.init(CallConv::kIdHost, TypeIdOf<void>::kTypeId, cachedArgs->Data(), cachedArgs->Size());
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return signature;
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}
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#endif
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@ -1,5 +1,6 @@
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#include "jitintern.h"
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#include <map>
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void JitCompiler::EmitPARAM()
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{
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@ -50,30 +51,39 @@ void JitCompiler::EmitVtbl(const VMOP *op)
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void JitCompiler::EmitCALL()
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{
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EmitDoCall(regA[A], nullptr);
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EmitVMCall(regA[A]);
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pc += C; // Skip RESULTs
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}
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void JitCompiler::EmitCALL_K()
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{
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auto ptr = newTempIntPtr();
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cc.mov(ptr, asmjit::imm_ptr(konsta[A].v));
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EmitDoCall(ptr, static_cast<VMFunction*>(konsta[A].v));
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VMFunction *target = static_cast<VMFunction*>(konsta[A].v);
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VMNativeFunction *ntarget = nullptr;
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if (target && (target->VarFlags & VARF_Native))
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ntarget = static_cast<VMNativeFunction *>(target);
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if (ntarget && ntarget->DirectNativeCall)
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{
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EmitNativeCall(ntarget);
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}
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else
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{
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auto ptr = newTempIntPtr();
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cc.mov(ptr, asmjit::imm_ptr(target));
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EmitVMCall(ptr);
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}
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pc += C; // Skip RESULTs
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}
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void JitCompiler::EmitDoCall(asmjit::X86Gp vmfunc, VMFunction *target)
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void JitCompiler::EmitVMCall(asmjit::X86Gp vmfunc)
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{
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using namespace asmjit;
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bool simpleFrameTarget = false;
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if (target && (target->VarFlags & VARF_Native))
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{
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VMScriptFunction *starget = static_cast<VMScriptFunction*>(target);
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simpleFrameTarget = starget->SpecialInits.Size() == 0 && starget->NumRegS == 0;
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}
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CheckVMFrame();
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int numparams = StoreCallParams(simpleFrameTarget);
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int numparams = StoreCallParams();
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if (numparams != B)
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I_FatalError("OP_CALL parameter count does not match the number of preceding OP_PARAM instructions");
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@ -85,20 +95,6 @@ void JitCompiler::EmitDoCall(asmjit::X86Gp vmfunc, VMFunction *target)
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X86Gp paramsptr = newTempIntPtr();
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cc.lea(paramsptr, x86::ptr(vmframe, offsetParams));
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EmitScriptCall(vmfunc, paramsptr);
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LoadInOuts();
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LoadReturns(pc + 1, C);
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ParamOpcodes.Clear();
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pc += C; // Skip RESULTs
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}
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void JitCompiler::EmitScriptCall(asmjit::X86Gp vmfunc, asmjit::X86Gp paramsptr)
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{
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using namespace asmjit;
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auto scriptcall = newTempIntPtr();
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cc.mov(scriptcall, x86::ptr(vmfunc, myoffsetof(VMScriptFunction, ScriptCall)));
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@ -110,9 +106,14 @@ void JitCompiler::EmitScriptCall(asmjit::X86Gp vmfunc, asmjit::X86Gp paramsptr)
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call->setArg(2, Imm(B));
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call->setArg(3, GetCallReturns());
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call->setArg(4, Imm(C));
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LoadInOuts();
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LoadReturns(pc + 1, C);
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ParamOpcodes.Clear();
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}
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int JitCompiler::StoreCallParams(bool simpleFrameTarget)
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int JitCompiler::StoreCallParams()
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{
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using namespace asmjit;
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@ -320,3 +321,201 @@ void JitCompiler::FillReturns(const VMOP *retval, int numret)
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cc.mov(x86::byte_ptr(GetCallReturns(), i * sizeof(VMReturn) + myoffsetof(VMReturn, RegType)), type);
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}
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}
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void JitCompiler::EmitNativeCall(VMNativeFunction *target)
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{
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using namespace asmjit;
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auto call = cc.call(imm_ptr(target->NativeCall), CreateFuncSignature(target));
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if ((pc - 1)->op == OP_VTBL)
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{
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I_FatalError("Native direct member function calls not implemented\n");
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}
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X86Gp tmp;
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X86Xmm tmp2;
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int numparams = 0;
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for (unsigned int i = 0; i < ParamOpcodes.Size(); i++)
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{
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int slot = numparams++;
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if (ParamOpcodes[i]->op == OP_PARAMI)
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{
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int abcs = ParamOpcodes[i]->i24;
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call->setArg(slot, imm(abcs));
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}
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else // OP_PARAM
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{
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int bc = ParamOpcodes[i]->i16u;
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switch (ParamOpcodes[i]->a)
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{
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case REGT_NIL:
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call->setArg(slot, imm(0));
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break;
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case REGT_INT:
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call->setArg(slot, regD[bc]);
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break;
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case REGT_INT | REGT_KONST:
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call->setArg(slot, imm(konstd[bc]));
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break;
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case REGT_STRING:
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call->setArg(slot, regS[bc]);
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break;
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case REGT_STRING | REGT_KONST:
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call->setArg(slot, imm_ptr(&konsts[bc]));
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break;
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case REGT_POINTER:
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call->setArg(slot, regA[bc]);
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break;
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case REGT_POINTER | REGT_KONST:
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call->setArg(slot, asmjit::imm_ptr(konsta[bc].v));
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break;
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case REGT_FLOAT:
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call->setArg(slot, regF[bc]);
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break;
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case REGT_FLOAT | REGT_MULTIREG2:
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for (int j = 0; j < 2; j++)
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call->setArg(slot + j, regF[bc + j]);
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numparams++;
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break;
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case REGT_FLOAT | REGT_MULTIREG3:
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for (int j = 0; j < 3; j++)
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call->setArg(slot + j, regF[bc + j]);
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numparams += 2;
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break;
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case REGT_FLOAT | REGT_KONST:
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tmp = newTempIntPtr();
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tmp2 = newTempXmmSd();
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cc.mov(tmp, asmjit::imm_ptr(konstf + bc));
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cc.movsd(tmp2, asmjit::x86::qword_ptr(tmp));
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call->setArg(slot, tmp2);
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break;
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case REGT_STRING | REGT_ADDROF:
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case REGT_INT | REGT_ADDROF:
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case REGT_POINTER | REGT_ADDROF:
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case REGT_FLOAT | REGT_ADDROF:
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I_FatalError("REGT_ADDROF not implemented for native direct calls\n");
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break;
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default:
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I_FatalError("Unknown REGT value passed to EmitPARAM\n");
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break;
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}
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}
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}
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if (numparams != B)
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I_FatalError("OP_CALL parameter count does not match the number of preceding OP_PARAM instructions\n");
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int numret = C;
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if (numret > 1)
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I_FatalError("Only one return parameter is supported for direct native calls\n");
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if (numret == 1)
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{
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const auto &retval = pc[1];
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if (retval.op != OP_RESULT)
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{
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I_FatalError("Expected OP_RESULT to follow OP_CALL\n");
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}
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int type = retval.b;
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int regnum = retval.c;
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if (type & REGT_KONST)
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{
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I_FatalError("OP_RESULT with REGT_KONST is not allowed\n");
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}
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// Note: the usage of newResultXX is intentional. Asmjit has a register allocation bug
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// if the return virtual register is already allocated in an argument slot.
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switch (type & REGT_TYPE)
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{
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case REGT_INT:
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tmp = newResultInt32();
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call->setRet(0, tmp);
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cc.mov(regD[regnum], tmp);
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break;
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case REGT_FLOAT:
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tmp2 = newResultXmmSd();
|
||||
call->setRet(0, tmp2);
|
||||
cc.movsd(regF[regnum], tmp2);
|
||||
break;
|
||||
case REGT_POINTER:
|
||||
tmp = newResultIntPtr();
|
||||
cc.mov(regA[regnum], tmp);
|
||||
break;
|
||||
case REGT_STRING:
|
||||
case REGT_FLOAT | REGT_MULTIREG2:
|
||||
case REGT_FLOAT | REGT_MULTIREG3:
|
||||
default:
|
||||
I_FatalError("Unsupported OP_RESULT type encountered in EmitNativeCall\n");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
ParamOpcodes.Clear();
|
||||
}
|
||||
|
||||
asmjit::FuncSignature JitCompiler::CreateFuncSignature(VMFunction *func)
|
||||
{
|
||||
using namespace asmjit;
|
||||
|
||||
TArray<uint8_t> args;
|
||||
FString key;
|
||||
for (unsigned int i = 0; i < func->Proto->ArgumentTypes.Size(); i++)
|
||||
{
|
||||
const PType *type = func->Proto->ArgumentTypes[i];
|
||||
if (func->ArgFlags[i] & (VARF_Out | VARF_Ref))
|
||||
{
|
||||
args.Push(TypeIdOf<void*>::kTypeId);
|
||||
key += "v";
|
||||
}
|
||||
else if (type == TypeVector2)
|
||||
{
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
key += "ff";
|
||||
}
|
||||
else if (type == TypeVector3)
|
||||
{
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
key += "fff";
|
||||
}
|
||||
else if (type == TypeFloat64)
|
||||
{
|
||||
args.Push(TypeIdOf<double>::kTypeId);
|
||||
key += "f";
|
||||
}
|
||||
else if (type == TypeString)
|
||||
{
|
||||
args.Push(TypeIdOf<void*>::kTypeId);
|
||||
key += "s";
|
||||
}
|
||||
else if (type->isIntCompatible())
|
||||
{
|
||||
args.Push(TypeIdOf<int>::kTypeId);
|
||||
key += "i";
|
||||
}
|
||||
else
|
||||
{
|
||||
args.Push(TypeIdOf<void*>::kTypeId);
|
||||
key += "v";
|
||||
}
|
||||
}
|
||||
|
||||
// FuncSignature only keeps a pointer to its args array. Keep a copy of each args array variant.
|
||||
static std::map<FString, std::unique_ptr<TArray<uint8_t>>> argsCache;
|
||||
std::unique_ptr<TArray<uint8_t>> &cachedArgs = argsCache[key];
|
||||
if (!cachedArgs) cachedArgs.reset(new TArray<uint8_t>(args));
|
||||
|
||||
FuncSignature signature;
|
||||
signature.init(CallConv::kIdHost, TypeIdOf<void>::kTypeId, cachedArgs->Data(), cachedArgs->Size());
|
||||
return signature;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -38,9 +38,7 @@ private:
|
|||
#include "vmops.h"
|
||||
#undef xx
|
||||
|
||||
//static asmjit::FuncSignature CreateFuncSignature(VMScriptFunction *sfunc);
|
||||
//static asmjit::CCFunc *CodegenThunk(asmjit::X86Compiler &cc, VMScriptFunction *sfunc, void *nativefunc);
|
||||
//void SetupNative();
|
||||
static asmjit::FuncSignature CreateFuncSignature(VMFunction *sfunc);
|
||||
|
||||
void Setup();
|
||||
void CreateRegisters();
|
||||
|
|
@ -52,11 +50,11 @@ private:
|
|||
void EmitOpcode();
|
||||
void EmitPopFrame();
|
||||
|
||||
void EmitDoCall(asmjit::X86Gp ptr, VMFunction *target);
|
||||
void EmitScriptCall(asmjit::X86Gp vmfunc, asmjit::X86Gp paramsptr);
|
||||
void EmitNativeCall(VMNativeFunction *target);
|
||||
void EmitVMCall(asmjit::X86Gp ptr);
|
||||
void EmitVtbl(const VMOP *op);
|
||||
|
||||
int StoreCallParams(bool simpleFrameTarget);
|
||||
int StoreCallParams();
|
||||
void LoadInOuts();
|
||||
void LoadReturns(const VMOP *retval, int numret);
|
||||
void FillReturns(const VMOP *retval, int numret);
|
||||
|
|
|
|||
|
|
@ -464,6 +464,9 @@ public:
|
|||
// Return value is the number of results.
|
||||
NativeCallType NativeCall;
|
||||
|
||||
// Function pointer to a native function to be called directly by the JIT using the platform calling convention
|
||||
void *DirectNativeCall = nullptr;
|
||||
|
||||
private:
|
||||
static int NativeScriptCall(VMFunction *func, VMValue *params, int numparams, VMReturn *ret, int numret);
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in a new issue