80 lines
1.9 KiB
Python
80 lines
1.9 KiB
Python
mem = [''] * 1000
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reg = [0] * 10
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pReg = 0
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iReg = ''
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def loadProgram(file):
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global pReg, iReg, reg, mem
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fil = open(file, 'r')
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first = True
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while True:
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line = fil.readline()
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if line == '':
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break
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fids = line.split()
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address = int(fids[0])
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instruc = fids[1]
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for fld in fids[2: len(fids)]:
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instruc = instruc + ' ' + fld
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mem[address] = instruc
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if first:
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pReg = address
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first = False
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fil.close()
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def cycle():
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global pReg, iReg, reg, mem
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# 取指令
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iReg = mem[pReg]
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pReg = pReg + 1
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# 译码
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flds = iReg.split()
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opcode = flds[0].lower() # 操作码
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if len(flds) > 1:
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op1 = int(flds[1]) # 操作数1
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if len(flds) > 2:
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op2 = int(flds[2]) # 操作数2
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# 执行和写结果
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if opcode == 'mov1':
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reg[op1] = mem[op2]
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elif opcode == 'mov2':
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mem[op1] = reg[op2]
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elif opcode == 'mov3':
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reg[op1] = op2
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elif opcode == 'add':
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reg[op1] = reg[op1] + reg[op2]
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elif opcode == 'sub':
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reg[op1] = reg[op1] - reg[op2]
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elif opcode == 'mul':
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reg[op1] = reg[op1] * reg[op2]
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elif opcode == 'div':
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reg[op1] = reg[op1] // reg[op2]
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elif opcode == 'jmp':
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pReg = op1
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elif opcode == 'jz':
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if reg[op1] == 0:
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pReg = op2
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elif opcode == 'in':
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reg[op1] = int(input('input:'))
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elif opcode == 'out':
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print('output:', reg[op1])
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elif opcode == 'halt':
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return False
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else:
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print(f'Unknown opcode {opcode}')
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return True
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def run(file):
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global pReg, iReg, reg, mem
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loadProgram(file)
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while True:
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hasNextInstruc = cycle()
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if hasNextInstruc == False:
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break
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run('D:/python/test.toy2') |