mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-11 07:12:16 +00:00
- disabled code that shows how a thunk function and native setup would look like
This commit is contained in:
Magnus Norddahl
parent
89cec539fa
commit
7e0dacdb1d
2 changed files with 244 additions and 0 deletions
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@ -1,6 +1,7 @@
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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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@ -794,3 +795,242 @@ 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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@ -38,6 +38,10 @@ private:
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#include "vmops.h"
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#undef xx
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//static asmjit::FuncSignature CreateFuncSignature(VMScriptFunction *sfunc);
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//static asmjit::CCFunc *CodegenThunk(asmjit::X86Compiler &cc, VMScriptFunction *sfunc, void *nativefunc);
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//void SetupNative();
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void Setup();
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void CreateRegisters();
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void IncrementVMCalls();
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