source: dev/trunk/abdev/BasicCompiler32/increment.cpp@ 206

#include "stdafx.h"

#include "../BasicCompiler_Common/common.h"
#include "Opcode.h"

void IncDec(int idCalc, const char *lpszLeft, const char *lpszRight){

    ///////////////////////////
    // 変数アドレスを取得
    ///////////////////////////

    RELATIVE_VAR VarRelativeVar;
    Type varType;
    if(!GetVarOffsetReadWrite(
        lpszLeft,
        &VarRelativeVar,
        varType)) return;

    if(IsUse_ecx(&VarRelativeVar)){
        //push ecx
        op_push(REG_ECX);
    }


    ///////////////////////////////////
    // レジスタへ変数の内容をコピー
    ///////////////////////////////////

    if( varType.IsReal() ){
        //実数
        SetReg_RealVariable(varType.GetBasicType(),&VarRelativeVar);
    }
    else{
        //整数
        SetReg_WholeVariable(varType.GetBasicType(),&VarRelativeVar,REG_EAX);
    }

    
    if(varType.IsWhole()&&lstrcmp(lpszRight,"1")==0&&
        (idCalc==CALC_ADDITION||idCalc==CALC_SUBTRACTION)){
        ////////////////////////////////////////////
        // 整数型のインクリメント・デクリメント
        ////////////////////////////////////////////

        if( varType.Is64() ){
            if(idCalc==CALC_ADDITION){
                //64ビット インクリメント

                //add eax,1
                op_add_RV8(REG_EAX,1);

                //adc edx,0
                op_adc_RV8(REG_EDX,0);
            }
            else if(idCalc==CALC_SUBTRACTION){
                //64ビット デクリメント

                //sub eax,1
                op_sub_RV8(REG_EAX,1);

                //sbb edx,0
                op_sbb_RV8(REG_EDX,0);
            }
        }
        else{
            if(idCalc==CALC_ADDITION){
                //インクリメント
                op_inc(REG_EAX);
            }
            else if(idCalc==CALC_SUBTRACTION){
                //デクリメント
                op_dec(REG_EAX);
            }
        }
    }
    else{
        //変数オフセットを一時退避
        //push ecx
        op_push(REG_ECX);

        if( varType.IsDouble() ){
            //sub esp,8
            op_sub_esp(8);

            //fstp qword ptr[esp]
            op_fstp_basereg(varType.GetBasicType(),REG_ESP);
        }
        else if( varType.IsSingle() ){
            //sub esp,4
            op_sub_esp(4);

            //fstp dword ptr[esp]
            op_fstp_basereg(varType.GetBasicType(),REG_ESP);
        }
        else if( varType.Is64() ){
            //push edx
            op_push(REG_EDX);

            //push eax
            op_push(REG_EAX);
        }
        else{
            //push eax
            op_push(REG_EAX);
        }

        Type calcType;
        if( !NumOpe(lpszRight,varType,calcType) ){
            return;
        }

        if( varType.IsDouble() )        ChangeTypeToDouble(calcType.GetBasicType());
        else if( varType.IsSingle() )   ChangeTypeToSingle(calcType.GetBasicType());
        else ChangeTypeToWhole(calcType.GetBasicType(),varType.GetBasicType());

        int type_stack[255],sp;
        LONG_PTR index_stack[255];
        type_stack[0]=varType.GetBasicType();
        type_stack[1]=varType.GetBasicType();
        index_stack[0]=varType.GetIndex();
        index_stack[1]=varType.GetIndex();
        sp=2;

        switch(idCalc){
            case CALC_XOR:
                Calc_Xor(type_stack,index_stack,&sp);
                break;
            case CALC_OR:
                Calc_Or(type_stack,index_stack,&sp);
                break;
            case CALC_AND:
                Calc_And(type_stack,index_stack,&sp);
                break;
            case CALC_SHL:
                Calc_SHL(type_stack,&sp);
                break;
            case CALC_SHR:
                Calc_SHR(type_stack,&sp);
                break;
            case CALC_ADDITION:
            case CALC_SUBTRACTION:
            case CALC_PRODUCT:
                CalcTwoTerm_Arithmetic(idCalc,type_stack,index_stack,&sp);
                break;
            case CALC_MOD:
                Calc_Mod(type_stack,&sp);
                break;
            case CALC_QUOTIENT:
                Calc_Divide(type_stack,&sp,varType.GetBasicType());
                break;
            case CALC_INTQUOTIENT:
                Calc_IntDivide(type_stack,index_stack,&sp);
                break;
            case CALC_POWER:
                Calc_Power(type_stack,&sp);
                break;
        }


        if( varType.IsDouble() ){
            //fld qword ptr[esp]
            op_fld_basereg(varType.GetBasicType(),REG_ESP);

            //add esp,8
            op_add_esp(8);
        }
        else if( varType.IsSingle() ){
            //fld dword ptr[esp]
            op_fld_basereg(varType.GetBasicType(),REG_ESP);

            //add esp,4
            op_add_esp(4);
        }
        else if( varType.Is64() ){
            //pop eax
            op_pop(REG_EAX);

            //pop edx
            op_pop(REG_EDX);
        }
        else{
            //pop eax
            op_pop(REG_EAX);
        }


        //変数オフセットを復元
        //pop ecx
        op_pop(REG_ECX);
    }


    /////////////////////////////////////////////////
    // レジスタの内容を変数にコピー
    /////////////////////////////////////////////////

    if(IsUse_ecx(&VarRelativeVar)){
        //pop ecx
        op_pop(REG_ECX);
    }

    SetVariableFromEax(varType.GetBasicType(),varType.GetBasicType(),&VarRelativeVar);
}