binary_instr_with_imm.h

#pragma once
#include "libmicroemu/internal/decoder/decoder.h"
#include "libmicroemu/internal/executor/instr/post_exec.h"
#include "libmicroemu/internal/executor/instr_context.h"
#include "libmicroemu/internal/executor/instr_exec_results.h"
#include "libmicroemu/internal/result.h"
#include "libmicroemu/internal/utils/rarg.h"
#include "libmicroemu/register_details.h"
#include "libmicroemu/types.h"
 
namespace libmicroemu::internal {
template <typename TInstrContext> class Add1ImmOp {
public:
  template <typename TDest, typename TArg0>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const TArg0 &rn, const u32 &imm) {
    const auto n = ictx.cpua.ReadRegister(rn.Get());
    const auto result = Alu32::AddWithCarry(n, imm, false);
    const auto op_res = OpResult{result.value, result.carry_out, result.overflow};
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};

template <typename TInstrContext> class Adc1ImmOp {
public:
  template <typename TDest, typename TArg0>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const TArg0 &rn, const u32 &imm) {
    const auto n = ictx.cpua.ReadRegister(rn.Get());
    auto apsr = ictx.cpua.template ReadSpecialRegister<SpecialRegisterId::kApsr>();
    const auto result =
        Alu32::AddWithCarry(n, imm, (apsr & ApsrRegister::kCMsk) == ApsrRegister::kCMsk);
    const auto op_res = OpResult{result.value, result.carry_out, result.overflow};
 
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};

template <typename TInstrContext> class Sub1ImmOp {
public:
  template <typename TDest, typename TArg0>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const TArg0 &rn, const u32 &imm) {
    const auto n = ictx.cpua.ReadRegister(rn.Get());
    const auto result = Alu32::AddWithCarry(n, ~imm, true);
    const auto op_res = OpResult{result.value, result.carry_out, result.overflow};
 
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};

template <typename TInstrContext> class Sbc1ImmOp {
public:
  template <typename TDest, typename TArg0>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const TArg0 &rn, const u32 &imm) {
    const auto n = ictx.cpua.ReadRegister(rn.Get());
    auto apsr = ictx.cpua.template ReadSpecialRegister<SpecialRegisterId::kApsr>();
    const auto result =
        Alu32::AddWithCarry(n, ~imm, (apsr & ApsrRegister::kCMsk) == ApsrRegister::kCMsk);
    const auto op_res = OpResult{result.value, result.carry_out, result.overflow};
 
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};

template <typename TInstrContext> class Rsb1ImmOp {
public:
  template <typename TDest, typename TArg0>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const TArg0 &rn, const u32 &imm) {
    const auto n = ictx.cpua.ReadRegister(rn.Get());
    const auto result = Alu32::AddWithCarry(~n, imm, true);
    const auto op_res = OpResult{result.value, result.carry_out, result.overflow};
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
 
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};
 
template <typename TOp, typename TInstrContext> class BinaryInstrWithImm {
public:
  using It = typename TInstrContext::It;
  using Pc = typename TInstrContext::Pc;
 
  template <typename TDest, typename TArg0>
  static Result<InstrExecResult> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                      const TDest &rd, const TArg0 &rn, const u32 &imm) {
 
    TRY_ASSIGN(condition_passed, InstrExecResult, It::ConditionPassed(ictx.cpua));
    if (!condition_passed) {
      PostExecAdvancePcAndIt::Call(ictx, iflags);
      return Ok(InstrExecResult{kNoInstrExecFlags});
    }
 
    TRY_ASSIGN(eflags, InstrExecResult, TOp::Call(ictx, iflags, rd, rn, imm));
    return Ok(InstrExecResult{eflags});
  }
 
private:
  BinaryInstrWithImm() = delete;

  ~BinaryInstrWithImm() = delete;

  BinaryInstrWithImm(const BinaryInstrWithImm &r_src) = delete;

  BinaryInstrWithImm &operator=(const BinaryInstrWithImm &r_src) = delete;

  BinaryInstrWithImm(BinaryInstrWithImm &&r_src) = delete;

  BinaryInstrWithImm &operator=(BinaryInstrWithImm &&r_src) = delete;
};
 
} // namespace libmicroemu::internal