unary_instr_imm_carry.h

#pragma once
#include "libmicroemu/internal/decoder/decoder.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 MovImmCarryOp {
public:
  template <typename TDest>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const ThumbImmediateResult &imm_carry) {
    auto apsr = ictx.cpua.template ReadSpecialRegister<SpecialRegisterId::kApsr>();
    const auto op_res = OpResult{imm_carry.out, imm_carry.carry_out,
                                 (apsr & ApsrRegister::kVMsk) == ApsrRegister::kVMsk};
 
    PostExecWriteRegPcExcluded::Call(ictx, rd, op_res.value);
 
    PostExecOptionalSetFlags::Call(ictx, iflags, op_res);
    PostExecAdvancePcAndIt::Call(ictx, iflags);
    return Ok(kNoInstrExecFlags);
  }
};

template <typename TInstrContext> class MvnImmCarryOp {
public:
  template <typename TDest>
  static Result<InstrExecFlagsSet> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                        const TDest &rd, const ThumbImmediateResult &imm_carry) {
    auto apsr = ictx.cpua.template ReadSpecialRegister<SpecialRegisterId::kApsr>();
    const auto op_res = OpResult{~imm_carry.out, imm_carry.carry_out,
                                 (apsr & ApsrRegister::kVMsk) == ApsrRegister::kVMsk};
 
    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 UnaryInstrImmCarry {
public:
  using It = typename TInstrContext::It;
  using Pc = typename TInstrContext::Pc;
 
  template <typename TDest>
  static Result<InstrExecResult> Call(TInstrContext &ictx, const InstrFlagsSet &iflags,
                                      const TDest &rd, const ThumbImmediateResult &imm_carry) {
    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, imm_carry));
    return Ok(InstrExecResult{eflags});
  }
 
private:
  UnaryInstrImmCarry() = delete;

  ~UnaryInstrImmCarry() = delete;

  UnaryInstrImmCarry(const UnaryInstrImmCarry &r_src) = delete;

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

  UnaryInstrImmCarry(UnaryInstrImmCarry &&r_src) = delete;

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