source: dev/BasicCompiler64/Compile_Func.cpp@ 60

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

int GetFunctionType(int FuncNum){
    switch(FuncNum){
        case FUNC_LEN:
            return DEF_LONG;
        case FUNC_SIZEOF:
            return DEF_LONG;
        case FUNC_ADDRESSOF:
        case FUNC_VARPTR:
            return DEF_PTR_VOID;
        case FUNC_GETDOUBLE:
            return DEF_DOUBLE;
        case FUNC_GETSINGLE:
            return DEF_SINGLE;
        case FUNC_GETQWORD:
            return DEF_QWORD;
        case FUNC_GETDWORD:
            return DEF_DWORD;
        case FUNC_GETWORD:
            return DEF_WORD;
        case FUNC_GETBYTE:
            return DEF_BYTE;
    }
    return 0;
}
int GetFunctionFromName(char *FuncName){
    if(lstrcmpi(FuncName,"Len")==0)         return FUNC_LEN;
    if(lstrcmpi(FuncName,"AddressOf")==0)   return FUNC_ADDRESSOF;
    if(lstrcmpi(FuncName,"SizeOf")==0)      return FUNC_SIZEOF;
    if(lstrcmpi(FuncName,"VarPtr")==0)      return FUNC_VARPTR;
    if(lstrcmpi(FuncName,"GetDouble")==0)   return FUNC_GETDOUBLE;
    if(lstrcmpi(FuncName,"GetSingle")==0)   return FUNC_GETSINGLE;
    if(lstrcmpi(FuncName,"GetQWord")==0)    return FUNC_GETQWORD;
    if(lstrcmpi(FuncName,"GetDWord")==0)    return FUNC_GETDWORD;
    if(lstrcmpi(FuncName,"GetWord")==0)     return FUNC_GETWORD;
    if(lstrcmpi(FuncName,"GetByte")==0)     return FUNC_GETBYTE;
    return 0;
}
void Opcode_Func_Len( const char *Parameter ){
    int type,TypeSize;
    LONG_PTR lpIndex;
    BOOL bArrayHead;

    type=GetVarType(Parameter,&lpIndex,0);

    const char *tempParm=Parameter;
    char temporary[VN_SIZE];
    char temp2[32];
    if(type==-1){
        sprintf(temporary,"_System_DummyStr2=%s",Parameter);
        OpcodeCalc(temporary);

        lstrcpy(temp2,"_System_DummyStr2");
        tempParm=temp2;

        extern CClass *pobj_StringClass;
        type=DEF_OBJECT;
        lpIndex=(LONG_PTR)pobj_StringClass;
    }

    TYPEINFO TypeInfo={type,lpIndex};
    if(IsStringObjectType(&TypeInfo)){
        //Stringオブジェクトの場合
        sprintf(temporary,"%s.Length",tempParm);

        int reg=REG_RAX;
        NumOpe(&reg,temporary,0,0,NULL,NULL);
        return;
    }


    int SubScripts[MAX_ARRAYDIM];
    RELATIVE_VAR RelativeVar;
    if(!GetVarOffsetReadOnly(tempParm,&type,&RelativeVar,&lpIndex,SubScripts)) return;


    if(type&FLAG_PTR){
        type&=~FLAG_PTR;

        bArrayHead=1;
    }
    else bArrayHead=0;

    TypeSize=GetTypeSize(type,lpIndex);

    if(bArrayHead) TypeSize*=JumpSubScripts(SubScripts);

    //mov rax,TypeSize
    op_mov_RV(sizeof(_int64),REG_RAX,TypeSize);

    return;
}
void Opcode_Func_AddressOf( const char *name ){
    extern int cp;
    SUBINFO *psi;

    extern LONG_PTR ProcPtr_BaseIndex;
    if(ProcPtr_BaseIndex!=-1){
        //左辺の型にのっとり、オーバーロードを解決

        std::vector<SUBINFO *> subs;
        GetOverloadSubHash( name, subs );
        if( subs.size() == 0 ){
            SetError(27,name,cp);
            return;
        }

        //オーバーロードを解決
        extern PROCPTRINFO *pProcPtrInfo;
        psi=OverloadSolution(name,subs,pProcPtrInfo[ProcPtr_BaseIndex].pParmInfo,pProcPtrInfo[ProcPtr_BaseIndex].ParmNum,NULL);

        if(!psi){
            SetError(27,name,cp);
            return;
        }
    }
    else{
        psi=GetSubHash(name);
        if(!psi){
            SetError(27,name,cp);
            return;
        }
    }


    if(psi->bVirtual){
        ///////////////////////////////
        // 仮想関数の場合
        // thisポインタをrcxにコピー
        ///////////////////////////////

        CClass *pobj_c;

        char ObjectName[VN_SIZE];
        int RefType;
        SplitObjectName(name,ObjectName,&RefType);

        if(ObjectName[0]){
            if(lstrcmpi(ObjectName,"Super")==0) goto InClassMember;
            else{
                RELATIVE_VAR RelativeVar;
                int type;
                if(!GetVarOffsetReadOnly(ObjectName,&type,&RelativeVar,(LONG_PTR *)&pobj_c)) return;
                SetVarPtrToReg(REG_RCX,&RelativeVar);

                //参照タイプが整合しているかをチェック
                if(type!=RefType) SetError(104,ObjectName,cp);

                if(type==DEF_PTR_OBJECT){
                    //mov rcx,qword ptr[rcx]
                    op_mov_RM(sizeof(_int64),REG_RCX,REG_RCX,0,MOD_BASE);
                }
            }
        }
        else{
InClassMember:
            //自身のオブジェクトのThisポインタをrcxにコピー
            SetThisPtrToReg(REG_RCX);

            pobj_c=pobj_CompilingClass;
        }


        //仮想関数（オブジェクトメソッド）
        //pObj->func_table->func1
        //                ->func2
        //                ->func3

        //mov r11,qword ptr[rcx]
        op_mov_RM(sizeof(_int64),REG_R11,REG_RCX,0,MOD_BASE);

        int i2 = pobj_c->GetFuncNumInVtbl( psi );

        //mov rax,qword ptr[r11+func_index]
        if(i2*PTR_SIZE<=0x7F){
            op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP8);
        }
        else{
            op_mov_RM(sizeof(_int64),REG_RAX,REG_R11,i2*PTR_SIZE,MOD_BASE_DISP32);
        }
    }
    else{
        //一般の関数

        //mov rax,ProcAddr
        op_mov_RV(sizeof(_int64),REG_RAX,0);
        obp-=sizeof(long);
        pobj_SubAddrSchedule->add(psi,0);
        obp+=sizeof(long);
    }

    psi->bUse=1;
}
void Opcode_Func_SizeOf( const char *Parameter ){
    int type,size;
    LONG_PTR lpIndex;

    type=GetTypeFixed(Parameter,&lpIndex);
    size=GetTypeSize(type,lpIndex);

    //mov rax,size
    op_mov_RV(sizeof(_int64),REG_RAX,size);
}
void Opcode_Func_VarPtr( const char *Parameter, TYPEINFO &ReturnTypeInfo ){
    RELATIVE_VAR RelativeVar;

    //変数のアドレスを取得
    if(!GetVarOffsetReadOnly( Parameter, &ReturnTypeInfo.type, &RelativeVar, &ReturnTypeInfo.u.lpIndex )) return;

    PTR_LEVEL_UP( ReturnTypeInfo.type );

    SetVarPtrToReg(REG_RAX,&RelativeVar);
}
void Opcode_Func_GetPtrData( const char *Parameter, const int type ){
    int i2;

    int reg=REG_RAX;
    i2=NumOpe(&reg,Parameter,0,0,0);
    if(!IsWholeNumberType(i2)){
        extern int cp;
        SetError(11,Parameter,cp);
        return;
    }

    if(type==DEF_DOUBLE){
        //movlpd xmm0,qword ptr[rax]
        op_movlpd_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
    }
    else if(type==DEF_SINGLE){
        //movss xmm0,dword ptr[rax]
        op_movss_RM(REG_XMM0,REG_RAX,0,MOD_BASE);
    }
    else{
        //mov rax,ptr[rax]
        op_mov_RM(GetTypeSize(type,-1),REG_RAX,REG_RAX,0,MOD_BASE);
    }
}

void Opcode_CallFunc( const char *Parameter, const int FuncNum, TYPEINFO &ReturnTypeInfo ){
    switch(FuncNum){
        case FUNC_LEN:
            Opcode_Func_Len(Parameter);
            ReturnTypeInfo.type = DEF_LONG;
            break;
        case FUNC_ADDRESSOF:
            Opcode_Func_AddressOf(Parameter);
            ReturnTypeInfo.type = DEF_PTR_VOID;
            break;
        case FUNC_SIZEOF:
            Opcode_Func_SizeOf(Parameter);
            ReturnTypeInfo.type = DEF_LONG;
            break;
        case FUNC_VARPTR:
            Opcode_Func_VarPtr( Parameter, ReturnTypeInfo );
            break;

        case FUNC_GETDOUBLE:
            Opcode_Func_GetPtrData(Parameter,DEF_DOUBLE);
            ReturnTypeInfo.type = DEF_DOUBLE;
            break;
        case FUNC_GETSINGLE:
            Opcode_Func_GetPtrData(Parameter,DEF_SINGLE);
            ReturnTypeInfo.type = DEF_SINGLE;
            break;
        case FUNC_GETQWORD:
            Opcode_Func_GetPtrData(Parameter,DEF_QWORD);
            ReturnTypeInfo.type = DEF_QWORD;
            break;
        case FUNC_GETDWORD:
            Opcode_Func_GetPtrData(Parameter,DEF_DWORD);
            ReturnTypeInfo.type = DEF_DWORD;
            break;
        case FUNC_GETWORD:
            Opcode_Func_GetPtrData(Parameter,DEF_WORD);
            ReturnTypeInfo.type = DEF_WORD;
            break;
        case FUNC_GETBYTE:
            Opcode_Func_GetPtrData(Parameter,DEF_BYTE);
            ReturnTypeInfo.type = DEF_BYTE;
            break;
    }
}