⭐ 欢迎来到虫虫下载站! | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站

📄 assembler.cpp

📁 MIPS32指令系统的汇编器。 在QUARTUS仿真环境中
💻 CPP
📖 第 1 页 / 共 5 页
字号:
							if(State==7){State=8;break;}
							if(State==12){State=13;break;}
							else{State=-1;break;}
						}
					case 'r':
					case 'R':
						{
							if(State==8){State=9;break;}
							if(State==10){State=11;break;}
							if(State==13){State=14;break;}
							if(State==15){State=21;break;}
							else{State=-1;break;}
						}
					case 'x':
					case 'X': if(State==0){State=12;break;}else{State=-1;break;}
					case 's':
					case 'S': if(State==0){State=15;break;}else{State=-1;break;}
					case 'l':
					case 'L':
						{
							if(State==15){State=16;break;}
							if(State==16){State=19;break;}
							if(State==21){State=24;break;}
							else{State=-1;break;}
						}
					case 't':
					case 'T': if(State==16){State=17;break;}else{State=-1;break;}
					case 'v':
					case 'V':
						{
							if(State==19){State=20;break;}
							if(State==22){State=23;break;}
							if(State==24){State=25;break;}
							else{State=-1;break;}
						}
					case 'b':
					case 'B': if(State==26){State=27;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==3||State==4||State==6||State==9||State==11||State==14||State==17||State==18||State==20||State==23||State==25||State==27||State==28)
								{ret[--i]='\0';TOKEN.TokenID=6;TOKEN.TokenName=ret;return 0;}
							  else{State=-1;break;} 
					default: {State=-1;break;}
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************SICOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 'l':
					case 'L': if(State==0){State=1;break;}else{State=-1;break;}
					case 'u':
					case 'U': if(State==1){State=2;break;}else{State=-1;break;}
					case 'i':
					case 'I': if(State==2){State=3;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==3){ret[--i]='\0';TOKEN.TokenID=10;TOKEN.TokenName=ret;return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************LWICOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 'l':
					case 'L': if(State==0){State=1;break;}else{State=-1;break;}
					case 's':
					case 'S': if(State==0){State=3;break;}else{State=-1;break;}
					case 'w':
					case 'W':
						{
							if(State==1){State=2;break;}
							if(State==3){State=4;break;}
							else{State=-1;break;}
						}
//					case '\n':
					case '\t':
					case ' ': if(State==2||State==4){ret[--i]='\0';TOKEN.TokenID=11;TOKEN.TokenName=ret;return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************JCOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 'j':
					case 'J': if(State==0){State=1;break;}else{State=-1;break;}
					case 'a':
					case 'A': if(State==1){State=2;break;}else{State=-1;break;}
					case 'l':
					case 'L': if(State==2){State=3;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==1||State==3){ret[--i]='\0';TOKEN.TokenID=12;TOKEN.TokenName=ret;return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				//////////////////////////////////NOP//////////
				while ( 1 )
				{
					switch ( ch )
					{
					case 'n':
					case 'N': if(State==0){State=1;break;}else{State=-1;break;}
					case 'o':
					case 'O': if(State==1){State=2;break;}else{State=-1;break;}
					case 'p':
					case 'P': if(State==2){State=3;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==3){TOKEN.TokenID=22;TOKEN.TokenName="NOP";return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 ) break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
				}	
				break;
			}
		
		case 17:			//当前栈顶为<N_ORDERS>								
			{					//应该扫描IDNAME, END; RCOM,SRCOM,SLLRCOM,ICOM,SICOM,LWICOM,JCOM,NOP,ORG_CODE
				i = 0;
				times = 0;  //统计每次循环No_TxtLine加了多少,回退时要用到
				int Length = ftell(SourceFileName);
				char ch = ReadOneChar(SourceFileName);
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				/**********************END**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 'e':
					case 'E': if(State==0){State=1;break;}else{State=-1;break;}
					case 'n':
					case 'N': if(State==1){State=2;break;}else{State=-1;break;}
					case 'd':
					case 'D': if(State==2){State=3;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==3){TOKEN.TokenID=13;TOKEN.TokenName="END";return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 ) break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
				}	
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				//////////////////////////////////NOP//////////
				while ( 1 )
				{
					switch ( ch )
					{
					case 'n':
					case 'N': if(State==0){State=1;break;}else{State=-1;break;}
					case 'o':
					case 'O': if(State==1){State=2;break;}else{State=-1;break;}
					case 'p':
					case 'P': if(State==2){State=3;break;}else{State=-1;break;}
//					case '\n':
					case '\t':
					case ' ': if(State==3){TOKEN.TokenID=22;TOKEN.TokenName="NOP";return 0;}else{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 ) break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
				}	
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				//////////////////////////////////ORG_CODE//////////
				while ( 1 )
				{
					switch ( ch )
					{
					case 'o':
					case 'O':
						{
							if(State==0) {State=1;break;}
							if(State==5) {State=6;break;}
							else break;
						}
					case 'r':
					case 'R':
						{
							if(State==1) {State=2;break;}
							else break;
						}
					case 'g':
					case 'G':
						{
							if(State==2) {State=3;break;}
							else break;
						}
					case '_':
						{
							if(State==3) {State=4;break;}
							else break;
						}
					case 'c':
					case 'C':
						{
							if(State==4) {State=5;break;}
							else break;
						}
					case 'd':
					case 'D':
						{
							if(State==6) {State=7;break;}
							else break;
						}
					case 'e':
					case 'E':
						{
							if(State==7) {State=8;break;}
							else break;
						}
					case ' ':
					case '\t':
//					case '\n':
						{
							if(State==8){TOKEN.TokenID=5;TOKEN.TokenName="ORG_CODE";return 0;}
							else break;
						}
 					default: {State=-1;break;}
					}
					if ( State == -1 ) break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
				}	
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************SRCOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 'j':
					case 'J': if(State==0){State=1;break;} else{State=-1;break;}
					case 'r':
					case 'R': if(State==1){State=2;break;} else{State=-1;break;}
					case ' ':
//					case '\n':
					case '\t': if(State==2)
									{ret[--i]='\0';TOKEN.TokenID=7;TOKEN.TokenName=ret;return 0;}
								else
									{State=-1;break;}
					default: {State=-1;break;}
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************SLLRCOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 's':
					case 'S':  if(State==0){State=1;break;}else{State=-1;break;} 
					case 'l':
					case 'L': 
						{
							if(State==1){State=2;break;}
							if(State==2){State=3;break;}
							if(State==4){State=6;break;}
							else{State=-1;break;} 
						}
					case 'r':
					case 'R': if(State==1){State=4;break;}else{State=-1;break;} 
					case 'a':
					case 'A': if(State==4){State=5;break;}else{State=-1;break;} 
//					case '\n':
					case ' ': if(State==3||State==5||State==6){ret[--i]='\0';TOKEN.TokenID=8;TOKEN.TokenName=ret;return 0;}
							  else{State=-1;break;} 
					default: {State=-1;break;} 
					}
					if ( State == -1 )
						break;
					ch = getc(SourceFileName);
					if ( ch == '\n' )
					{
						No_TxtLine++;
						times++;
					}
					ret[i++] = ch;
				}
				rewind(SourceFileName);
				if ( fseek(SourceFileName, Length, SEEK_CUR) == 1 )
					return -1;
				i = 0;
				ch = ReadOneChar(SourceFileName);
				No_TxtLine -= times;
				times = 0;
				if ( ch == '\n' )
				{
					No_TxtLine++;
					times = 1;
				}
				ret[i++] = ch;
				State = 0;
				/**********************ICOM**************************/
				while ( 1 )
				{
					switch ( ch )
					{
					case 's':
					case 'S': if(State==0){State=1;break;} else{State=-1;break;}
					case 'l':
					case 'L': if(State==1){State=2;break;} else{State=-1;break;}
					case 't':
					case 'T': if(State==2){State=3;break;} else{State=-1;break;}
					case 'i':
					case 'I': 
						{
							if(State==3){State=4;break;}
							if(State==13){State=14;break;}
							if(State==17){State=18;break;}
							if(State==20){State=21;break;}
							if(State==24){State=25;break;}
							else{State=-1;break;}
						}
					case 'u':
					case 'U': 
						{
							if(State==4){State=5;break;}
							if(State==14){State=15;break;}
							else{State=-1;break;}
						}

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -