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

BOOL IsUse_ecx(RELATIVE_VAR *pRelativeVar){
	if(pRelativeVar->bOffsetOffset||pRelativeVar->dwKind==VAR_DIRECTMEM) return 1;
	return 0;
}

void SetStructVariable( const Type &varType, const Type &calcType, BOOL bUseHeap){
	if( calcType.IsStruct() ){
		if( varType.GetClass().IsEquals( &calcType.GetClass() ) ){			//等しい

				//双方のオブジェクト型が一致、または派生・継承関係にあるとき
				//※コピーを行う

				int object_size = varType.GetClass().GetSize();

				//mov ecx,object_size
				op_mov_RV(REG_ECX,object_size);

				//pop esi
				op_pop(REG_ESI);

				//pop edi
				op_pop(REG_EDI);

				if(bUseHeap){
					//mov eax,esi
					op_mov_RR(REG_EAX,REG_ESI);
				}

				//rep movs byte ptr[edi],byte ptr[esi]
				op_rep_movs(sizeof(BYTE));

				if(bUseHeap){
					//push eax
					op_push(REG_EAX);

					//call free
					extern UserProc *pSub_free;
					op_call(pSub_free);
				}

				return;
		}
	}

	SetError(1,NULL,cp);
}


void SetRealVariable(int VarType,int CalcType,RELATIVE_VAR *pRelativeVar){
	if( !IsRealNumberType( CalcType ) ){
		// 実数へ変換
		// 64bit edx:eax -> st(0)
		// 32bit     eax -> st(0)

		if( Is64Type( CalcType ) ){
			//64ビット整数型

			//push edx
			op_push( REG_EDX );

			//push eax
			op_push( REG_EAX );

			//fild qword ptr[esp]
			op_fld_ptr_esp(DEF_INT64);

			//pop
			op_pop( REG_NON );

			//pop
			op_pop( REG_NON );
		}
		else{
			//push eax
			op_push( REG_EAX );

			//fild qword ptr[esp]
			op_fld_ptr_esp(DEF_LONG);

			//pop
			op_pop( REG_NON );
		}
	}

	if(pRelativeVar->dwKind==VAR_GLOBAL){
		if(pRelativeVar->bOffsetOffset){
			//fstp ptr[ecx+offset]
			op_fstp_base_offset(VarType,REG_ECX,(int)pRelativeVar->offset);
			obp-=sizeof(long);
			pobj_GlobalVarSchedule->add();
			obp+=sizeof(long);
		}
		else{
			//mov ecx,offset
			op_mov_RV(REG_ECX,(int)pRelativeVar->offset);
			obp-=sizeof(long);
			pobj_GlobalVarSchedule->add();
			obp+=sizeof(long);

			//fstp ptr[ecx]
			op_fstp_basereg(VarType,REG_ECX);
		}
	}
	else if(pRelativeVar->dwKind==VAR_REFGLOBAL){
		if(pRelativeVar->bOffsetOffset){
			//add ecx,qword ptr[offset]
			op_add_RM(sizeof(long),REG_ECX,REG_NON,(int)pRelativeVar->offset,MOD_DISP32);
		}
		else{
			//mov ecx,qword ptr[offset]
			op_mov_RM(sizeof(long),REG_ECX,REG_NON,(int)pRelativeVar->offset,MOD_DISP32);
		}
		obp-=sizeof(long);
		pobj_GlobalVarSchedule->add();
		obp+=sizeof(long);

		goto directmem;
	}
	else if(pRelativeVar->dwKind==VAR_LOCAL){
		if(pRelativeVar->bOffsetOffset){
			//fstp ptr[ebp+ecx+offset]
			op_fstp_base_offset_ex(VarType,REG_EBP,REG_ECX,(int)pRelativeVar->offset,USE_OFFSET);
		}
		else{
			//fstp ptr[ebp+offset]
			op_fstp_base_offset(VarType,REG_EBP,(int)pRelativeVar->offset);
		}
		obp-=sizeof(long);
		AddLocalVarAddrSchedule();
		obp+=sizeof(long);
	}
	else if(pRelativeVar->dwKind==VAR_REFLOCAL){
		if(pRelativeVar->bOffsetOffset){
			//add ecx,qword ptr[ebp+offset]
			op_add_RM(sizeof(long),REG_ECX,REG_EBP,(int)pRelativeVar->offset,MOD_BASE_DISP32);
		}
		else{
			//mov ecx,qword ptr[ebp+offset]
			op_mov_RM(sizeof(long),REG_ECX,REG_EBP,(int)pRelativeVar->offset,MOD_BASE_DISP32);
		}
		obp-=sizeof(long);
		AddLocalVarAddrSchedule();
		obp+=sizeof(long);

		goto directmem;
	}
	else if(pRelativeVar->dwKind==VAR_DIRECTMEM){
directmem:
		//fstp ptr[ecx]
		op_fstp_basereg(VarType,REG_ECX);
	}
}

void SetBooleanVariable(int type,RELATIVE_VAR *pRelative){
	if(type==DEF_DOUBLE){
		// TODO: 実装
		SetError();
	}
	else if(type==DEF_SINGLE){
		// TODO: 実装
		SetError();
	}
	else if(type==DEF_INT64||type==DEF_QWORD){
		//cmp eax,0
		op_cmp_value(GetTypeSize(type,-1),REG_EAX,0);

		//setne al
		op_setne( REG_EAX );

		//cmp edx,0
		op_cmp_value(GetTypeSize(type,-1),REG_EDX,0);

		//setne cl
		op_setne( REG_ECX );

		//or al,cl
		op_or_RR( sizeof( _int8 ), REG_EAX, REG_ECX );
	}
	else{
		if(!IsWholeNumberType(type)){
			//不正な型の場合
			SetError(9,NULL,cp);
			return;
		}
	}

	//cmp eax,0
	op_cmp_value(GetTypeSize(type,-1),REG_EAX,0);

	//setne al
	op_setne( REG_EAX );

	SetWholeVariable( sizeof(char), DEF_BYTE, pRelative );
}

void ExtendTypeTo32(int type,int reg);
void ExtendTypeTo64(int type){
	if(Is64Type(type)) return;

	ExtendTypeTo32(type,REG_EAX);

	if(IsSignedType(type)){
		//cdq
		op_cdq();
	}
	else{
		//xor edx,edx
		op_zero_reg(REG_EDX);
	}
}
void ExtendTypeTo32(int type,int reg){
	if(type==DEF_INTEGER || (isUnicode&&type==DEF_CHAR)){
		//movsx reg32,reg16
		op_movsx_R32R16(reg,reg);
	}
	else if(type==DEF_WORD){
		//and reg,0000FFFFh
		op_and_RV(reg,(int)0x0000FFFF);
	}
	else if(type==DEF_SBYTE || (isUnicode==false&&type==DEF_CHAR)){
		//movsx reg32,reg8
		op_movsx_R32R8(reg,reg);
	}
	else if(type==DEF_BYTE||type==DEF_BOOLEAN){
		//and reg,000000FFh
		op_and_RV(reg,(int)0xFF);
	}
}
void ExtendTypeTo16(int type,int reg){
	if(type==DEF_SBYTE || (isUnicode==false&&type==DEF_CHAR)){
		//movsx reg16,reg8
		op_movsx_R16R8(reg,reg);
	}
	else if(type==DEF_BYTE||type==DEF_BOOLEAN){
		//and reg,000000FFh
		op_and_RV(reg,(int)0xFF);
	}
}

void SetWholeVariable(int varSize,int calcType,RELATIVE_VAR *pRelative){
	if( IsRealNumberType( calcType ) ){
		// 実数型から整数型へ変換する

		if( varSize == sizeof(_int64) ){
			// 64bitへ
			// st(0) -> edx:eax
			breakpoint;

			//push
			//push
			op_sub_esp( PTR_SIZE * 2 );

			//fistp qword ptr[esp]
			op_fistp_ptr_esp( sizeof(_int64) );

			//pop eax
			op_pop( REG_EAX );

			//pop edx
			op_pop( REG_EDX );
		}
		else{
			// 32bit
			// st(0) -> eax

			//push
			op_push( REG_NON );

			//fistp dword ptr[esp]
			op_fistp_ptr_esp( sizeof(long) );

			//pop eax
			op_pop( REG_EAX );
		}
	}
	else{
		//その他の整数

		if(varSize==sizeof(_int64)){
			//eaxの値を64ビット（edx:eax）に拡張する
			ExtendTypeTo64(calcType);
		}
		else if(varSize==sizeof(long)){
			//レジスタの値を32ビット（eax）に拡張する
			ExtendTypeTo32(calcType,REG_EAX);
		}
		else if(varSize==sizeof(short)){
			//レジスタの値を16ビット（ax）に拡張する
			ExtendTypeTo16(calcType,REG_EAX);
		}
		//8ビットは拡張なし
	}

	if(varSize==sizeof(_int64)){
		//下位32ビット
		SetWholeVariable(sizeof(long),DEF_LONG,pRelative);

		//上位32ビット

		//直接参照に切り替え
		SetVarPtrToEax(pRelative);
		pRelative->dwKind=VAR_DIRECTMEM;

		//mov ecx,eax
		op_mov_RR( REG_ECX, REG_EAX );

		//add ecx,sizeof(long)
		op_add_RV8( REG_ECX, sizeof(long) );

		//mov eax,edx
		op_mov_RR( REG_EAX, REG_EDX );

		SetWholeVariable(sizeof(long),DEF_LONG,pRelative);

		return;
	}

	if(pRelative->dwKind==VAR_GLOBAL){
		if(pRelative->bOffsetOffset){
			//mov ptr[ecx+offset],eax/ax/al
			op_mov_MR(varSize,REG_EAX,REG_ECX,(int)pRelative->offset,MOD_BASE_DISP32);
		}
		else{
			//mov ptr[offset],eax/ax/al
			op_mov_MR(varSize,REG_EAX,0,(int)pRelative->offset,MOD_DISP32);
		}
		obp-=sizeof(long);
		pobj_GlobalVarSchedule->add();
		obp+=sizeof(long);
	}
	else if(pRelative->dwKind==VAR_REFGLOBAL){
		if(pRelative->bOffsetOffset){
			//add ecx,qword ptr[offset]
			op_add_RM(varSize,REG_ECX,REG_NON,(int)pRelative->offset,MOD_DISP32);
		}
		else{
			//mov ecx,qword ptr[offset]
			op_mov_RM(varSize,REG_ECX,REG_NON,(int)pRelative->offset,MOD_DISP32);
		}
		obp-=sizeof(long);
		pobj_GlobalVarSchedule->add();
		obp+=sizeof(long);

		goto directmem;
	}
	else if(pRelative->dwKind==VAR_LOCAL){
		if(pRelative->bOffsetOffset){
			//mov ptr[ebp+ecx+offset],eax/ax/al
			op_mov_MR_ex(varSize,REG_EAX,REG_EBP,REG_ECX,(int)pRelative->offset,USE_OFFSET);
		}
		else{
			//mov ptr[ebp+offset],eax/ax/al
			op_mov_MR(varSize,REG_EAX,REG_EBP,(int)pRelative->offset,MOD_BASE_DISP32);
		}
		obp-=sizeof(long);
		AddLocalVarAddrSchedule();
		obp+=sizeof(long);
	}
	else if(pRelative->dwKind==VAR_REFLOCAL){
		if(pRelative->bOffsetOffset){
			//add ecx,qword ptr[ebp+offset]
			op_add_RM(varSize,REG_ECX,REG_EBP,(int)pRelative->offset,MOD_BASE_DISP32);
		}
		else{
			//mov ecx,qword ptr[ebp+offset]
			op_mov_RM(varSize,REG_ECX,REG_EBP,(int)pRelative->offset,MOD_BASE_DISP32);
		}
		obp-=sizeof(long);
		AddLocalVarAddrSchedule();
		obp+=sizeof(long);

		goto directmem;
	}
	else if(pRelative->dwKind==VAR_DIRECTMEM){
directmem:

		//mov ptr[ecx],eax/ax/al
		op_mov_MR(varSize,REG_EAX,REG_ECX,0,MOD_BASE);
	}
}