Method CALLFARIndirectOp

FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp:962–990

}

void OpDispatchBuilder::CALLFARIndirectOp(OpcodeArgs) {
  const auto SrcSize = Op->Flags & FEXCore::X86Tables::DecodeFlags::FLAG_REX_WIDENING ? OpSize::i64Bit : OpSize::i32Bit;

  // Calculate flags early.
  CalculateDeferredFlags();

  BlockSetRIP = true;

  Ref Src = MakeSegmentAddress(Op, Op->Dest);
  AddressMode SrcCS  = {.Base = Src, .Offset = 4, .AddrSize = OpSize::i64Bit};
  auto RIPOffset = _LoadMemAutoTSO(GPRClass, OpSize::i32Bit, Src, OpSize::i8Bit);
  auto NewSegmentCS = _LoadMemAutoTSO(GPRClass, OpSize::i16Bit, SrcCS, OpSize::i8Bit);
  auto CurrentCS = _LoadContext(OpSize::i16Bit, GPRClass, offsetof(FEXCore::Core::CPUState, cs_idx));

  auto NewRIP = GetRelocatedPC(Op);

  // Push the current CS
  Push(SrcSize, CurrentCS);

  // Push the return address.
  Push(SrcSize, NewRIP);

  // Set up the new CSSegment.
  _StoreContext(OpSize::i16Bit, GPRClass, NewSegmentCS, offsetof(FEXCore::Core::CPUState, cs_idx));
  UpdatePrefixFromSegment(NewSegmentCS, FEXCore::X86Tables::DecodeFlags::FLAG_CS_PREFIX);

  // Store the new RIP
  ExitFunction(RIPOffset);
}

void OpDispatchBuilder::RETFARIndirectOp(OpcodeArgs) {
  const auto GPRSize = GetGPROpSize();