如何修改簡單的彙編代碼來更逼真？

[我implmented簡單的彙編程序，組裝一套15 mips指令，程序獲取來自用戶的指令，並顯示相應的機器碼輸出txt文件，我的問題是如何修改代碼，使彙編程序無限無。直到用戶指令中止程序他自&打印輸出文件中的新行]如何修改簡單的彙編代碼來更逼真？

這裏每個32位指令代碼：

inst = raw_input("enter your instruction operation:") 

if ((inst[0] == 'a' and inst[1] == 'd' and inst[2] == 'd' and inst[3] != 'i') or (inst[0] == 'a' and inst[1] == 'n' and inst[2] == 'd' and inst[3] != 'i') or (inst[0] == 'o' and inst[1] == 'r'and inst[2] != 'i') or (inst[0] == 'n' and inst[1] == 'o' and inst[2] == 'r') or (inst[0] == 's' and inst[1] == 'u' and inst[2] == 'b') or (inst[0] == 's' and inst[1] == 'l' and inst[2] == 'l') or(inst[0] == 's' and inst[1] == 'l' and inst[2] == 't')): 

     Rs = raw_input("enter the first operand:") 
     for i in range (0,32): 
     if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
      opcode = '000000' 
      Mc_file = open("output.txt", "w") 
      Mc_file.write(str(opcode) + str(rs)) 
      Mc_file.close() 
     Rt = raw_input("enter the 2nd operand:") 
     for i in range (0,32): 
     if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
      opcode = '000000' 
      Mc_file = open("output.txt", "w") 
      Mc_file.write(str(opcode) + str(rs) + str(rt)) 
      Mc_file.close() 
     Rd = raw_input("enter the destination operand:") 
     for i in range (0,32): 
     if(Rd == '$'+ str(i)): 
      rd = "{0:05b}".format(i) 
      opcode = '000000' 
      shamt ='00000' 
      Mc_file = open("output.txt", "w") 
      Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt) 
      Mc_file.close() 

     if(inst[0] == 'a' and inst[1] == 'd' and inst[2] == 'd'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('100000')) 
       Mc_file.close() 
     if(inst[0] == 'a' and inst[1] == 'n' and inst[2] == 'd'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('100100')) 
       Mc_file.close() 
     if(inst[0] == 'o' and inst[1] == 'r'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('100101')) 
       Mc_file.close() 
     if(inst[0] == 'n' and inst[1] == 'o' and inst[2] == 'r'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('100111')) 
       Mc_file.close() 
     if(inst[0] == 's' and inst[1] == 'u' and inst[2] == 'b'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('100010')) 
       Mc_file.close() 
       """ if(inst[0] == 'j' and inst[1] == 'r'): 
       ass_inst = str(inst) + ' ' + str(Rd) + ',' + str(Rs) + ',' + str(Rt) 
       print "your assembly instruction is: %s" % (ass_inst) 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str('00000') + str('00000') +str(rd) + shamt + str('001000')) 
       Mc_file.close()""" 
     if(inst[0] == 's' and inst[1] == 'l' and inst[2] == 'l'): 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('000000')) 
       Mc_file.close() 
     if(inst[0] == 's' and inst[1] == 'l' and inst[2] == 't'): 
       Mc_file = open("output.txt", "w") 
       Mc_file.write(str(opcode) + str(rs) + str(rt) +str(rd) + shamt + str('101010')) 
       Mc_file.close() 
elif (inst[0] == 'l' and inst[1] == 'w'): 
    Rs = raw_input("enter the first operand:",) 
    for i in range (0,32): 
    if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
    Rt = raw_input("enter the destination operand:") 
    for i in range (0,32): 
    if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
    imediate = input("Enter the value of the offset:") 
    ass_inst = str(inst) + ' ' + str(Rs) + ',' + str(str(imediate) + '('+ str(Rt) + ')') 

    print " Entered assembly instruction is: %s " % ass_inst 
    opcode ='100011' 
    imd = "{0:016b}".format(imediate) 
    Mc_file = open("output.txt", "w") 
    Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
    Mc_file.close() 
elif (inst[0] == 's' and inst[1] == 'w'): 
    Rs = raw_input("enter the destination operand:") 
    for i in range (0,32): 
    if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
    Rt = raw_input("enter the source operand:") 
    for i in range (0,32): 
    if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
    imediate = input("Enter the value of the offset:") 
    ass_inst = str(inst) + ' ' + str(Rs) + ',' + str(str(imediate) + '('+ str(Rt) + ')') 
    print "your assembly instruction is: %s" % (ass_inst) 
    imd = "{0:016b}".format(imediate) 
    opcode = '101011' 
    Mc_file = open("output.txt", "w") 
    Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
    Mc_file.close() 

elif inst[0] == 'j' and inst[1] == 'r': 
    dr = raw_input("enter the destination register:") 
    inst_ = str(inst) + ' ' + str(dr) 
    print "The entered assembly instruction is %s" % inst_ 
    for i in range(0,32): 
    if(dr == '$'+ str(i)): 
     addrss = "{0:026b}".format(i) 
     Mc_file = open("output.txt", "w") 
     opcode = '000011' 
     Mc_file.write(str(opcode) + str(addrss)) 
     Mc_file.close() 
elif inst[0] == 'b' and inst[1] == 'e' and inst[2] == 'q': 
     Rs = raw_input("enter the first operand to be compared:",) 
     for i in range (0,32): 
     if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
     Rt = raw_input("enter the second operand to be compared:") 
     for i in range (0,32): 
     if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
     imediate = input("Enter the branch target address:") 
     ass_inst = (str(inst) + ' ' + str(Rs) + ',' + str(Rt) + ' ' + str(imediate)) 
     print " Entered assembly instruction is: %s " % ass_inst 
     imd = "{0:016b}".format(imediate) 
     opcode = '000100' 
     Mc_file = open("output.txt", "w") 
     Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
     Mc_file.close() 
elif (inst[0] == 'a' and inst[1] == 'n' and inst[2] == 'd'and inst[3] == 'i'): 
    Rs = raw_input("enter the first operand:") 
    for i in range (0,32): 
     if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
    Rt = raw_input("enter the second operand:") 
    for i in range (0,32): 
     if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
    imediate = input("Enter the Imediate number:") 
    ass_inst = (str(inst) + ' ' + str(Rs) + ',' + str(Rt) + ' ' + str(imediate)) 
    print " Entered assembly instruction is: %s " % ass_inst 
    imd = "{0:016b}".format(imediate) 
    opcode = '000100' 
    Mc_file = open("output.txt", "w") 
    Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
    Mc_file.close() 

elif (inst[0] == 'o' and inst[1] == 'r' and inst[2] == 'i'): 
    Rs = raw_input("enter the first operand:") 
    for i in range (0,32): 
     if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
    Rt = raw_input("enter the second operand:") 
    for i in range (0,32): 
     if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
    imediate = input("Enter the Imediate number:") 
    ass_inst = (str(inst) + ' ' + str(Rs) + ',' + str(Rt) + ' ' + str(imediate)) 
    print " Entered assembly instruction is: %s " % ass_inst 
    imd = "{0:016b}".format(imediate) 
    opcode = '001101' 
    Mc_file = open("output.txt", "w") 
    Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
    Mc_file.close() 
elif (inst[0] == 'a' and inst[1] == 'd' and inst[2] == 'd'and inst[3] == 'i'): 
    Rs = raw_input("enter the first operand:") 
    for i in range (0,32): 
     if(Rs == '$'+ str(i)): 
      rs = "{0:05b}".format(i) 
    Rt = raw_input("enter the second operand:") 
    for i in range (0,32): 
     if(Rt == '$'+ str(i)): 
      rt = "{0:05b}".format(i) 
    imediate = input("Enter the Imediate number:") 
    ass_inst = (str(inst) + ' ' + str(Rs) + ',' + str(Rt) + ' ' + str(imediate)) 
    print " Entered assembly instruction is: %s " % ass_inst 
    imd = "{0:016b}".format(imediate) 
    opcode = '001000' 
    Mc_file = open("output.txt", "w") 
    Mc_file.write(str(opcode) + str(rs) + str(rt) + str(imd)) 
    Mc_file.close() 
else: 
    print "Not supported operation!"

來源

2014-01-26 Amr saad

你應該學會使用表格。把說明放在一張表中並循環查找匹配。它減少了代碼中的重複。 – stark

是的，謝謝你的這個問題我會盡量記住下一次 –

您可以使用while True無限循環：

while True: 
    inst = raw_input("enter your instruction operation or 'q' to quit:") 
    if inst.lower() in ("q", "quit"): 
     break 
    # rest of code goes here

您可以open這個循環和write一個在一個時間線，或重新打開該文件每次通過'a'環路（「追加」）模式之前的文件。

來源

2014-01-26 13:52:52 jonrsharpe

我做了你所說的，但是它只彙編了32位的最後一條輸入指令 –

是的，因爲你打開''w''文件（「（在）寫入「）模式。閱讀我的整個答案。 – jonrsharpe

好吧，當我輸入3條指令時，三條機器代碼在同一行中對齊！應該在一行中打印每條指令 –

如何修改簡單的彙編代碼來更逼真？

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