Beispiel #1
0
def execute():#执行一个clock周期中每一阶段的语句
    global ret_pc
    global jmp_pc
    global call_pc
    global pred_pc
    global w_icode
    global w_valE
    global w_valM
    global w_dstE
    global w_dstM
    global m_icode
    global m_valE
    global m_valM
    global m_dstE
    global m_dstM
    global e_icode
    global e_bch
    global e_valE
    global e_valM
    global e_dstE
    global e_dstM
    global d_icode
    global d_ifunc
    global d_valC
    global d_valA
    global d_valB
    global d_dstE
    global d_dstM
    global d_srcA
    global d_srcB
    global f_icode
    global f_ifunc
    global f_ra
    global f_rb
    global f_valC
    global f_valP
    global total_cycle
    global valid_cycle
    while(data.isend()==False):#如果程序的结束状态为假,继续执行
        #data.show()
        #global clocknum
        #clocknum+=1
        #print("CLOCK_NO:%d" %(clocknum))
        #PipeClock.PipeClock();
        ret_pc=""
        jmp_pc=""
        call_pc=""
        pred_pc=""
    
        valid_cycle=data.intread("valid_cycle")
        total_cycle=data.intread("total_cycle")
        total_cycle+=1
        #print("CLOCK-------------------------------")
#WriteBack---------------------------------
        #print("writeback:")
        w_icode=data.read("W_icode")#从外部寄存器读入信号
        w_valE=data.read("W_valE")
        w_valM=data.read("W_valM")
        w_dstE=data.read("W_dstE")
        w_dstM=data.read("W_dstM")
    
        if(w_icode=="0"):#nop
            nothing()
        elif(w_icode=="1"):#halt  如果halt阶段执行完writeback阶段,程序就结束了,并且强行清空之前的4个阶段
            data.write("M_index","X")
            data.write("M_icode","0")
            data.write("E_index","X")
            data.write("E_icode","0")
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
            data.setend()
        elif(w_icode=="2"):#rrmovl
            data.RegWrite(w_dstE,w_valE)
        elif(w_icode=="3"):#irmovl
            data.RegWrite(w_dstE,w_valE)
        elif(w_icode=="4"):#rmmovl
            nothing()
        elif(w_icode=="5"):#mrmovl
            data.RegWrite(w_dstE,w_valM)
        elif(w_icode=="6"):#op
            data.RegWrite(w_dstE,w_valE)
        elif(w_icode=="7"):#jmp
            nothing()
        elif(w_icode=="8"):#call
            data.RegWrite("4",w_valE)
        elif(w_icode=="9"):#ret
            data.RegWrite("4",w_valE)
        elif(w_icode=="a"):#push
            data.RegWrite("4",w_valE)
        elif(w_icode=="b"):#popl
            data.RegWrite("4",w_valE)
            data.RegWrite(w_dstE,w_valM)
        elif(w_icode=="c"):#iaddl
            data.RegWrite(w_dstE,w_valE)
        elif(w_icode=="d"):#leave
            data.RegWrite("4",w_valE)
            data.RegWrite("5",w_valM)

        if(w_icode=="0"):
            nothing()
        else:
            valid_cycle+=1
#Memory--------------------------------------
        #print("Memory:")
    
        m_icode=""
        m_valE=""
        m_valM=""
        m_dstE=""
        m_dstM=""

        m_icode=data.read("M_icode")#从外部读入信号
        m_valE=data.read("M_valE")
        m_valM=data.read("M_valM")
        m_dstE=data.read("M_dstE")
        m_dstM=data.read("M_dstM")
    
        if(m_icode=="0"):#nop
            m_valE=""
            m_valM=""
            m_dstE=""
            m_dstM=""
        elif(m_icode=="1"):#halt 一旦halt出现就要强行结束之前的3个阶段
            data.write("E_index","X")
            data.write("E_icode","0")
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
        elif(m_icode=="2"):#rrmovl
            nothing()
        elif(m_icode=="3"):#irmovl
            nothing()
        elif(m_icode=="4"):#rmmovl
            data.MemoryWrite(m_dstM,m_valM)
        elif(m_icode=="5"):#mrmovl
            m_valM=data.MemoryRead(m_dstM)
        elif(m_icode=="6"):#op
            nothing()
        elif(m_icode=="7"):#jmp
            nothing()
        elif(m_icode=="8"):#call
            data.MemoryWrite(m_valE,m_valM)
        elif(m_icode=="9"):#ret ret阶段也要清空之前的所有阶段,直到下一步的指令明确
            m_valM=data.MemoryRead(m_dstM)
            ret_pc=arc(m_valM)# 从内存中读取出来的pc,用于更新pred_pc
            data.write("E_index","X")
            data.write("E_icode","0")
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
        elif(m_icode=="a"):#push
            data.MemoryWrite(m_valE,m_valM)
        elif(m_icode=="b"):#pop
            m_valM=data.MemoryRead(m_dstM)
        elif(m_icode=="c"):#iaddl
            nothing()
        elif(m_icode=="d"):#leave
            m_valM=data.MemoryRead(m_dstM)
    
        data.write("W_index",data.read("M_index"))
    
        data.write("W_icode",m_icode)#将信号写入下一阶段
        data.write("W_valE",m_valE)
        data.write("W_valM",m_valM)
        data.write("W_dstE",m_dstE)
        data.write("W_dstM",m_dstM)
#Execute----------------------------------------------
        #print("Execute:")

        e_icode=""
        e_bch=""
        e_valE=""
        e_valM=""
        e_dstE=""
        e_dstM=""

        e_icode=data.read("E_icode")#从外部读入信号
        e_ifunc=data.read("E_ifunc")
        e_valC=data.read("E_valC")
        e_valA=data.read("E_valA")
        e_valB=data.read("E_valB")
        e_dstE=data.read("E_dstE")
        e_dstM=data.read("E_dstM")
        srcA=data.read("srcA")
        srcB=data.read("srcB")

        if(e_icode=="0"):#nop
            nothing()
            e_bch=""
            e_valE=""
            e_valM=""
            e_dstE=""
            e_dstM=""
        elif(e_icode=="1"):#halt 清空之前所有阶段
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
        elif(e_icode=="2"):#rrmovl
            e_valE=e_valA
        elif(e_icode=="3"):#irmovl
            e_valE=e_valC
        elif(e_icode=="4"):#rmmovl
            aluA=e_valB
            aluB=e_valC
            e_dstM=data.alu("0",aluA,aluB)
            e_valM=e_valA
        elif(e_icode=="5"):#mrmovl
            aluA=e_valB
            aluB=e_valC
            e_dstM=data.alu("0",aluA,aluB)
            e_dstE=srcA
        elif(e_icode=="6"):#op
            aluA=e_valA
            aluB=e_valB
            e_valE=data.alu(e_ifunc,aluA,aluB)
            e_dstE=srcB
        elif(e_icode=="7"):#jmp
            if(data.check(e_ifunc)):#根据CF,SF,OF,ZF判断是否跳转
                data.write("D_index","X")
                data.write("D_icode","0")
                data.write("pc","X")
                data.write("F_icode","0")
                jmp_pc=arc(e_valC)#如果要改变当前流程的话,记录对应的pc值
                e_bch=jmp_pc
        elif(e_icode=="8"):#call
            e_valM=e_valB#将返回地址存入栈中
            aluA=e_valA
            aluB="04000000"
            e_valE=data.alu("1",aluB,aluA)
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
            call_pc=arc(e_valC)        
            e_bch=call_pc    
        elif(e_icode=="9"):#ret
            aluA=e_valA
            aluB="04000000"
            e_valE=data.alu("0",aluA,aluB)
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("pc","X")
            data.write("F_icode","0")
            e_dstM=e_valA
        elif(e_icode=="a"):#push
            aluA=e_valB
            aluB="04000000"
            e_valE=data.alu("1",aluB,aluA)
            e_valM=e_valA
        elif(e_icode=="b"):#popl
            aluA=e_valB
            aluB="04000000"
            e_valE=data.alu("0",aluA,aluB)
            e_dstM=e_valB
            e_dstE=srcA
        elif(e_icode=="c"):#iaddl
            aluA=e_valA
            aluB=e_valC
            e_valE=data.alu("0",aluA,aluB)
            e_dstE=srcA
        elif(e_icode=="d"):#leave
            aluA=e_valA
            aluB="04000000"
            e_valE=data.alu("0",aluB,aluA)
            e_dstM=e_valA
            e_dstE="4"
        data.write("M_index",data.read("E_index"))

        data.write("M_icode",e_icode)#把信号写入到下一阶段
        data.write("bch",e_bch)
        data.write("M_valE",e_valE)
        data.write("M_valM",e_valM)
        data.write("M_dstE",e_dstE)
        data.write("M_dstM",e_dstM)
#Decode----------------------------------
        #print("Decode:")

        d_icode=""
        d_ifunc=""
        d_valC=""
        d_valA=""
        d_valB=""
        d_dstE=""
        d_dstM=""
        d_srcA=""
        d_srcB=""
    
        d_icode=data.read("D_icode")#从外部读入信号
        d_ifunc=data.read("D_ifunc")
        ra=data.read("rA")
        rb=data.read("rB")
        d_valC=data.read("D_valC")
        d_valP=data.read("D_valP")

        if(d_icode=="0"):#nop
            nothing()
            d_ifunc=""
            d_valC=""
            d_valA=""
            d_valB=""
            d_dstE=""
            d_dstM=""
            d_srcA=""
            d_srcB=""
        elif(d_icode=="1"):#halt
            nothing()
        elif(d_icode=="2"):#rrmovl
            Temp=forwarding(ra)#判断是否存在加载使用冒险
            if(Temp=="X"):
                data.setstall()#存在就暂停
            else:
                d_valA=Temp#否则取得forwarding的值
            d_dstE=rb
            d_srcA=ra
            d_srcB=rb
        elif(d_icode=="3"):#irmovl
            d_valA=d_valC
            d_dstE=rb
        elif(d_icode=="4"):#rmmovl-------------------------------------------------------------
            Temp=forwarding(ra)#判断要读取的寄存器a是否存在冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            Temp=forwarding(rb)#判断要读取的寄存器b是否存在冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valB=Temp
            d_srcA=ra
            d_srcB=rb
        elif(d_icode=="5"):#mrmovl-------------------------------------------------------
            Temp=forwarding(rb)#判断寄存器b是否存在冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valB=Temp
            d_dstE=ra
            d_srcA=ra
            d_srcB=rb
        elif(d_icode=="6"):#op------------------------------------------------------------------------
            Temp=forwarding(ra)#判断寄存器a是否存在冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            Temp=forwarding(rb)#判断寄存器b是否存在冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valB=Temp
            d_srcA=ra
            d_srcB=rb
            d_dstE=rb
        elif(d_icode=="7"):#jmp----------------------
            nothing()
        elif(d_icode=="8"):#call---------------------
            Temp=forwarding("4")#特别要注意的是call隐式调用了esp,需要判断是否冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            d_valB=d_valP
            d_srcA="4"
            d_dstE="4"
        elif(d_icode=="9"):#ret--------------------------------------
            Temp=forwarding("4")#ret 调用了esp,需要判断冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            d_dstE="4"
            d_srcA="4"
        elif(d_icode=="a"):#push-------------------------------------
            Temp=forwarding(ra)#push 同时调用了esp ebp需要同时判断冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            Temp=forwarding("4")
            if(Temp=="X"):
                data.setstall()
            else:
                d_valB=Temp
            d_srcA=ra
            d_srcB="4"
            d_dstE="4"
        elif(d_icode=="b"):#popl---------------------------------------------------------------
            Temp=forwarding("4")#pop 调用了esp,需要判断冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valB=Temp
            d_dstE=ra
            d_srcA=ra
            d_srcB="4"
        elif(d_icode=="c"):#iaddl-------------------------------------------------------------
            Temp=forwarding(ra)#判断iaddl的寄存器冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            d_valB=d_valC
            d_dstE=ra
            d_srcA=ra
        elif(d_icode=="d"):#leave------------------------------------------------------------
            Temp=forwarding("5")#leave要读取ebp,需要判断冒险
            if(Temp=="X"):
                data.setstall()
            else:
                d_valA=Temp
            d_dstE="4"
            d_dstM="5"
            d_srcA="5"

        if(data.isstall()):#如果说cycle中的decode和fetch处于暂停状态的话,在下一个Execute阶段需要插入一个bubble
            data.write("E_icode","0")
            data.write("E_index","X")
        else:#其他情况下,正常复制信号到外部寄存器
            data.write("E_index",data.read("D_index"))
    
            data.write("E_icode",d_icode)
            data.write("E_ifunc",d_ifunc)
            data.write("E_valC",d_valC)
            data.write("E_valA",d_valA)
            data.write("E_valB",d_valB)
            data.write("E_dstE",d_dstE)
            data.write("E_dstM",d_dstM)
            data.write("srcA",d_srcA)
            data.write("srcB",d_srcB)
#Fetch---------------------------------------------
        #print("Fetch:")
    
        f_icode=""
        f_ifunc=""
        f_ra=""
        f_rb=""
        f_valC=""
        f_valP=""
    
        f_icode=data.read("F_icode")#从外部寄存器读入信号
        pc=data.read("pc")    
    
        if(pc=="X"):#如果Fetch阶段因为stall不能取指,那么Fetch阶段本次不执行,但是需要将stall的一回合锁定取消,以保证下次能取指
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("F_icode","1")
            f_ifunc=""
            f_ra=""
            f_rb=""
            f_valC=""
            f_valP=""
            data.write("D_ifunc",f_ifunc)
            data.write("rA",f_ra)
            data.write("rB",f_rb)
            data.write("D_valC",f_valC)
            data.write("D_valP",f_valP)
        elif(f_icode=="0"):#如果Fetch阶段是因为ret和jXX被清零,那么同样恢复合法状态,保证下次能取指
            data.write("D_index","X")
            data.write("D_icode","0")
            data.write("F_icode","1")
            f_ifunc=""
            f_ra=""
            f_rb=""
            f_valC=""
            f_valP=""
            data.write("D_ifunc",f_ifunc)
            data.write("rA",f_ra)
            data.write("rB",f_rb)
            data.write("D_valC",f_valC)
            data.write("D_valP",f_valP)
        else:#如果就是合法,那么就根据内容正常取指
            pred_pc=data.next(pc)
            s=data.MemoryGet(pc)
                    
            if(s[0]=="0"):#nop
                nothing()
            if(s[0]=="1"):#halt
                nothing()
            if(s[0]=="2"):#rrmovl
                f_ra=s[2]
                f_rb=s[3]
            if(s[0]=="3"):#irmovl
                f_rb=s[3]
                f_valC=s[4:12]
            if(s[0]=="4"):#rmmovl
                f_ra=s[2]
                f_rb=s[3]
                f_valC=s[4:12]
            if(s[0]=="5"):#mrmovl
                f_ra=s[2]
                f_rb=s[3]
                f_valC=s[4:12]
            if(s[0]=="6"):#op
                f_ra=s[2]
                f_rb=s[3]
            if(s[0]=="7"):#jmp
                f_valC=s[2:10]
            if(s[0]=="8"):#call
                f_valC=s[2:10]
                f_ra="4"
            if(s[0]=="9"):#ret
                f_ra="4"
                nothing()
            if(s[0]=="a"):#push
                f_ra=s[2] 
                f_rb="4"
            if(s[0]=="b"):#pop
                f_ra=s[2]
                f_rb="4"
            if(s[0]=="c"):#iaddl
                f_ra=s[3]
                f_valC=s[4:12]
            if(s[0]=="d"):#leave
                f_ra="5"

        
            f_icode=s[0]
            f_ifunc=s[1]
            
            if(data.isstall()):
                nothing()
            else:#不暂停的合法状态下,将信号写入下一个Decode阶段
                data.write("D_index",pc)
                data.write("D_icode",f_icode)
                data.write("D_ifunc",f_ifunc)
                data.write("rA",f_ra)
                data.write("rB",f_rb)
                data.write("D_valC",f_valC)
                if(pred_pc[0]!="X"):
                    data.write("D_valP",arc(pred_pc))
                else:
                    data.write("D_valP","X")
#PC------------------------------------
        data.intwrite("total_cycle",total_cycle)#将总周期数写入外部
        data.intwrite("valid_cycle",valid_cycle)#将实际执行的周期数写入外部
        #print("PC:")
        if(data.isstall()):
            data.start()
            return 0

        if(ret_pc!=""):#判断下一个pc应该取什么值
            data.write("pc",ret_pc)#有ret先取ret_pc
        elif(call_pc!=""):
            data.write("pc",call_pc)#有call,取call_pc
        elif(jmp_pc!=""):
            data.write("pc",jmp_pc)#有jXX,取jmp_pc
        elif(pred_pc!=""):
            data.write("pc",pred_pc)#都没有的情况下取得下一个pc
        return 0
Beispiel #2
0
def execute():
    global ret_pc
    global jmp_pc
    global call_pc
    global pred_pc
    global w_icode
    global w_valE
    global w_valM
    global w_dstE
    global w_dstM
    global m_icode
    global m_valE
    global m_valM
    global m_dstE
    global m_dstM
    global e_icode
    global e_bch
    global e_valE
    global e_valM
    global e_dstE
    global e_dstM
    global d_icode
    global d_ifunc
    global d_valC
    global d_valA
    global d_valB
    global d_dstE
    global d_dstM
    global d_srcA
    global d_srcB
    global f_icode
    global f_ifunc
    global f_ra
    global f_rb
    global f_valC
    global f_valP
    while data.isend() == False:
        data.show()
        global clocknum
        clocknum += 1
        print("CLOCK_NO:%d" % (clocknum))
        PipeClock.PipeClock()
        ret_pc = ""
        jmp_pc = ""
        call_pc = ""
        pred_pc = ""

        # print("CLOCK-------------------------------")
        # WriteBack---------------------------------
        # print("writeback:")
        w_icode = data.read("W_icode")
        w_valE = data.read("W_valE")
        w_valM = data.read("W_valM")
        w_dstE = data.read("W_dstE")
        w_dstM = data.read("W_dstM")

        if w_icode == "0":  # nop
            nothing()
        elif w_icode == "1":  # halt
            data.write("M_index", "X")
            data.write("M_icode", "0")
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            data.setend()
        elif w_icode == "2":  # rrmovl
            data.RegWrite(w_dstE, w_valE)
        elif w_icode == "3":  # irmovl
            data.RegWrite(w_dstE, w_valE)
        elif w_icode == "4":  # rmmovl
            nothing()
        elif w_icode == "5":  # mrmovl
            data.RegWrite(w_dstE, w_valM)
        elif w_icode == "6":  # op
            data.RegWrite(w_dstE, w_valE)
        elif w_icode == "7":  # jmp
            nothing()
        elif w_icode == "8":  # call
            data.RegWrite("4", w_valE)
        elif w_icode == "9":  # ret
            data.RegWrite("4", w_valE)
        elif w_icode == "a":  # push
            data.RegWrite("4", w_valE)
        elif w_icode == "b":  # popl
            data.RegWrite("4", w_valE)
            data.RegWrite(w_dstE, w_valM)
        # Memory--------------------------------------
        # print("Memory:")

        m_icode = ""
        m_valE = ""
        m_valM = ""
        m_dstE = ""
        m_dstM = ""

        m_icode = data.read("M_icode")
        m_valE = data.read("M_valE")
        m_valM = data.read("M_valM")
        m_dstE = data.read("M_dstE")
        m_dstM = data.read("M_dstM")

        if m_icode == "0":  # nop
            nothing()
            m_valE = ""
            m_valM = ""
            m_dstE = ""
            m_dstM = ""
        elif m_icode == "1":  # halt
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif m_icode == "2":  # rrmovl
            nothing()
        elif m_icode == "3":  # irmovl
            nothing()
        elif m_icode == "4":  # rmmovl
            data.MemoryWrite(m_dstM, m_valM)
        elif m_icode == "5":  # mrmovl
            m_valM = data.MemoryRead(m_dstM)
        elif m_icode == "6":  # op
            nothing()
        elif m_icode == "7":  # jmp
            nothing()
        elif m_icode == "8":  # call
            data.MemoryWrite(m_valE, m_valM)
        elif m_icode == "9":  # ret
            m_valM = data.MemoryRead(m_dstM)
            ret_pc = arc(m_valM)
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif m_icode == "a":  # push
            data.MemoryWrite(m_valE, m_valM)
        elif m_icode == "b":  # pop
            m_valM = data.MemoryRead(m_dstM)

        data.write("W_index", data.read("M_index"))

        data.write("W_icode", m_icode)
        data.write("W_valE", m_valE)
        data.write("W_valM", m_valM)
        data.write("W_dstE", m_dstE)
        data.write("W_dstM", m_dstM)
        # Execute----------------------------------------------
        # print("Execute:")

        e_icode = ""
        e_bch = ""
        e_valE = ""
        e_valM = ""
        e_dstE = ""
        e_dstM = ""

        e_icode = data.read("E_icode")
        e_ifunc = data.read("E_ifunc")
        e_valC = data.read("E_valC")
        e_valA = data.read("E_valA")
        e_valB = data.read("E_valB")
        e_dstE = data.read("E_dstE")
        e_dstM = data.read("E_dstM")
        srcA = data.read("srcA")
        srcB = data.read("srcB")

        if e_icode == "0":  # nop
            nothing()
            e_bch = ""
            e_valE = ""
            e_valM = ""
            e_dstE = ""
            e_dstM = ""
        elif e_icode == "1":  # halt
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif e_icode == "2":  # rrmovl
            e_valE = e_valA
        elif e_icode == "3":  # irmovl
            e_valE = e_valC
        elif e_icode == "4":  # rmmovl
            aluA = e_valB
            aluB = e_valC
            e_dstM = data.alu("0", aluA, aluB)
            e_valM = e_valA
        elif e_icode == "5":  # mrmovl
            aluA = e_valB
            aluB = e_valC
            e_dstM = data.alu("0", aluA, aluB)
            e_dstE = srcA
        elif e_icode == "6":  # op
            aluA = e_valA
            aluB = e_valB
            e_valE = data.alu(e_ifunc, aluA, aluB)
            e_dstE = srcB
        elif e_icode == "7":  # jmp
            if data.check(e_ifunc):
                data.write("D_index", "X")
                data.write("D_icode", "0")
                data.write("pc", "X")
                data.write("F_icode", "0")
                jmp_pc = arc(e_valC)
                e_bch = jmp_pc
        elif e_icode == "8":  # call
            e_valM = e_valB
            aluA = e_valA
            aluB = "04000000"
            e_valE = data.alu("1", aluB, aluA)
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            call_pc = arc(e_valC)
            e_bch = call_pc
        elif e_icode == "9":  # ret
            aluA = e_valA
            aluB = "04000000"
            e_valE = data.alu("0", aluA, aluB)
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            e_dstM = e_valA
        elif e_icode == "a":  # push
            aluA = e_valB
            aluB = "04000000"
            e_valE = data.alu("1", aluB, aluA)
            e_valM = e_valA
        elif e_icode == "b":  # popl
            aluA = e_valB
            aluB = "04000000"
            e_valE = data.alu("0", aluA, aluB)
            e_dstM = e_valB
            e_dstE = srcA

        data.write("M_index", data.read("E_index"))

        data.write("M_icode", e_icode)
        data.write("bch", e_bch)
        data.write("M_valE", e_valE)
        data.write("M_valM", e_valM)
        data.write("M_dstE", e_dstE)
        data.write("M_dstM", e_dstM)
        # Decode----------------------------------
        # print("Decode:")

        d_icode = ""
        d_ifunc = ""
        d_valC = ""
        d_valA = ""
        d_valB = ""
        d_dstE = ""
        d_dstM = ""
        d_srcA = ""
        d_srcB = ""

        d_icode = data.read("D_icode")
        d_ifunc = data.read("D_ifunc")
        ra = data.read("rA")
        rb = data.read("rB")
        d_valC = data.read("D_valC")
        d_valP = data.read("D_valP")

        if d_icode == "0":  # nop
            nothing()
            d_ifunc = ""
            d_valC = ""
            d_valA = ""
            d_valB = ""
            d_dstE = ""
            d_dstM = ""
            d_srcA = ""
            d_srcB = ""
        elif d_icode == "1":  # halt
            nothing()
        elif d_icode == "2":  # rrmovl
            Temp = forwarding(ra)
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            d_dstE = rb
            d_srcA = ra
            d_srcB = rb
        elif d_icode == "3":  # irmovl
            d_valA = d_valC
            d_dstE = rb
        elif d_icode == "4":  # rmmovl-------------------------------------------------------------
            Temp = forwarding(ra)
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding(rb)
            if Temp == "X":
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = rb
        elif d_icode == "5":  # mrmovl-------------------------------------------------------
            Temp = forwarding(rb)
            if Temp == "X":
                data.setstall()
            else:
                d_valB = Temp
            d_dstE = ra
            d_srcA = ra
            d_srcB = rb
        elif d_icode == "6":  # op------------------------------------------------------------------------
            Temp = forwarding(ra)
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding(rb)
            if Temp == "X":
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = rb
            d_dstE = rb
        elif d_icode == "7":  # jmp----------------------
            nothing()
        elif d_icode == "8":  # call---------------------
            Temp = forwarding("4")
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            d_valB = d_valP
            d_srcA = "4"
            d_dstE = "4"
        elif d_icode == "9":  # ret--------------------------------------
            Temp = forwarding("4")
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            d_dstE = "4"
            d_srcA = "4"
        elif d_icode == "a":  # push-------------------------------------
            Temp = forwarding(ra)
            if Temp == "X":
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding("4")
            if Temp == "X":
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = "4"
            d_dstE = "4"
        elif d_icode == "b":  # popl---------------------------------------------------------------
            Temp = forwarding("4")
            if Temp == "4":
                data.setstall()
            else:
                d_valB = Temp
            d_dstE = ra
            d_srcA = ra
            d_srcB = "4"

        if data.isstall():
            data.write("E_icode", "0")
            data.write("E_index", "X")
        else:
            data.write("E_index", data.read("D_index"))

            data.write("E_icode", d_icode)
            data.write("E_ifunc", d_ifunc)
            data.write("E_valC", d_valC)
            data.write("E_valA", d_valA)
            data.write("E_valB", d_valB)
            data.write("E_dstE", d_dstE)
            data.write("E_dstM", d_dstM)
            data.write("srcA", d_srcA)
            data.write("srcB", d_srcB)
        # Fetch---------------------------------------------
        # print("Fetch:")

        f_icode = ""
        f_ifunc = ""
        f_ra = ""
        f_rb = ""
        f_valC = ""
        f_valP = ""

        f_icode = data.read("F_icode")
        pc = data.read("pc")

        if pc == "X":
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("F_icode", "1")
            f_ifunc = ""
            f_ra = ""
            f_rb = ""
            f_valC = ""
            f_valP = ""
            data.write("D_ifunc", f_ifunc)
            data.write("rA", f_ra)
            data.write("rB", f_rb)
            data.write("D_valC", f_valC)
            data.write("D_valP", f_valP)
        elif f_icode == "0":
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("F_icode", "1")
            f_ifunc = ""
            f_ra = ""
            f_rb = ""
            f_valC = ""
            f_valP = ""
            data.write("D_ifunc", f_ifunc)
            data.write("rA", f_ra)
            data.write("rB", f_rb)
            data.write("D_valC", f_valC)
            data.write("D_valP", f_valP)
        elif data.isstall():
            nothing()
        else:
            pred_pc = data.next(pc)
            s = data.MemoryGet(pc)

            if s[0] == "0":  # nop
                nothing()
            if s[0] == "1":  # halt
                nothing()
            if s[0] == "2":  # rrmovl
                f_ra = s[2]
                f_rb = s[3]
            if s[0] == "3":  # irmovl
                f_rb = s[3]
                f_valC = s[4:12]
            if s[0] == "4":  # rmmovl
                f_ra = s[2]
                f_rb = s[3]
                f_valC = s[4:12]
            if s[0] == "5":  # mrmovl
                f_ra = s[2]
                f_rb = s[3]
                f_valC = s[4:12]
            if s[0] == "6":  # op
                f_ra = s[2]
                f_rb = s[3]
            if s[0] == "7":  # jmp
                f_valC = s[2:10]
            if s[0] == "8":  # call
                f_valC = s[2:10]
                f_ra = "4"
            if s[0] == "9":  # ret
                f_ra = "4"
                nothing()
            if s[0] == "a":  # push
                f_ra = s[2]
                f_rb = "4"
            if s[0] == "b":  # pop
                f_ra = s[2]
                f_rb = "4"

            f_icode = s[0]
            f_ifunc = s[1]

            if data.isstall():
                nothing()
            else:
                data.write("D_index", pc)
                data.write("D_icode", f_icode)
                data.write("D_ifunc", f_ifunc)
                data.write("rA", f_ra)
                data.write("rB", f_rb)
                data.write("D_valC", f_valC)
                if pred_pc[0] != "X":
                    data.write("D_valP", arc(pred_pc))
                else:
                    data.write("D_valP", "X")
        # PC------------------------------------
        # print("PC:")
        if data.isstall():
            data.start()
            return 0

        if ret_pc != "":
            data.write("pc", ret_pc)
        elif call_pc != "":
            data.write("pc", call_pc)
        elif jmp_pc != "":
            data.write("pc", jmp_pc)
        elif pred_pc != "":
            data.write("pc", pred_pc)
        return 0
Beispiel #3
0
def execute():
    global ret_pc
    global jmp_pc
    global call_pc
    global pred_pc
    global w_icode
    global w_valE
    global w_valM
    global w_dstE
    global w_dstM
    global m_icode
    global m_valE
    global m_valM
    global m_dstE
    global m_dstM
    global e_icode
    global e_bch
    global e_valE
    global e_valM
    global e_dstE
    global e_dstM
    global d_icode
    global d_ifunc
    global d_valC
    global d_valA
    global d_valB
    global d_dstE
    global d_dstM
    global d_srcA
    global d_srcB
    global f_icode
    global f_ifunc
    global f_ra
    global f_rb
    global f_valC
    global f_valP
    while (data.isend() == False):
        data.show()
        global clocknum
        clocknum += 1
        print("CLOCK_NO:%d" % (clocknum))
        PipeClock.PipeClock()
        ret_pc = ""
        jmp_pc = ""
        call_pc = ""
        pred_pc = ""

        #print("CLOCK-------------------------------")
        #WriteBack---------------------------------
        #print("writeback:")
        w_icode = data.read("W_icode")
        w_valE = data.read("W_valE")
        w_valM = data.read("W_valM")
        w_dstE = data.read("W_dstE")
        w_dstM = data.read("W_dstM")

        if (w_icode == "0"):  #nop
            nothing()
        elif (w_icode == "1"):  #halt
            data.write("M_index", "X")
            data.write("M_icode", "0")
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            data.setend()
        elif (w_icode == "2"):  #rrmovl
            data.RegWrite(w_dstE, w_valE)
        elif (w_icode == "3"):  #irmovl
            data.RegWrite(w_dstE, w_valE)
        elif (w_icode == "4"):  #rmmovl
            nothing()
        elif (w_icode == "5"):  #mrmovl
            data.RegWrite(w_dstE, w_valM)
        elif (w_icode == "6"):  #op
            data.RegWrite(w_dstE, w_valE)
        elif (w_icode == "7"):  #jmp
            nothing()
        elif (w_icode == "8"):  #call
            data.RegWrite("4", w_valE)
        elif (w_icode == "9"):  #ret
            data.RegWrite("4", w_valE)
        elif (w_icode == "a"):  #push
            data.RegWrite("4", w_valE)
        elif (w_icode == "b"):  #popl
            data.RegWrite("4", w_valE)
            data.RegWrite(w_dstE, w_valM)
#Memory--------------------------------------
#print("Memory:")

        m_icode = ""
        m_valE = ""
        m_valM = ""
        m_dstE = ""
        m_dstM = ""

        m_icode = data.read("M_icode")
        m_valE = data.read("M_valE")
        m_valM = data.read("M_valM")
        m_dstE = data.read("M_dstE")
        m_dstM = data.read("M_dstM")

        if (m_icode == "0"):  #nop
            nothing()
            m_valE = ""
            m_valM = ""
            m_dstE = ""
            m_dstM = ""
        elif (m_icode == "1"):  #halt
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif (m_icode == "2"):  #rrmovl
            nothing()
        elif (m_icode == "3"):  #irmovl
            nothing()
        elif (m_icode == "4"):  #rmmovl
            data.MemoryWrite(m_dstM, m_valM)
        elif (m_icode == "5"):  #mrmovl
            m_valM = data.MemoryRead(m_dstM)
        elif (m_icode == "6"):  #op
            nothing()
        elif (m_icode == "7"):  #jmp
            nothing()
        elif (m_icode == "8"):  #call
            data.MemoryWrite(m_valE, m_valM)
        elif (m_icode == "9"):  #ret
            m_valM = data.MemoryRead(m_dstM)
            ret_pc = arc(m_valM)
            data.write("E_index", "X")
            data.write("E_icode", "0")
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif (m_icode == "a"):  #push
            data.MemoryWrite(m_valE, m_valM)
        elif (m_icode == "b"):  #pop
            m_valM = data.MemoryRead(m_dstM)

        data.write("W_index", data.read("M_index"))

        data.write("W_icode", m_icode)
        data.write("W_valE", m_valE)
        data.write("W_valM", m_valM)
        data.write("W_dstE", m_dstE)
        data.write("W_dstM", m_dstM)
        #Execute----------------------------------------------
        #print("Execute:")

        e_icode = ""
        e_bch = ""
        e_valE = ""
        e_valM = ""
        e_dstE = ""
        e_dstM = ""

        e_icode = data.read("E_icode")
        e_ifunc = data.read("E_ifunc")
        e_valC = data.read("E_valC")
        e_valA = data.read("E_valA")
        e_valB = data.read("E_valB")
        e_dstE = data.read("E_dstE")
        e_dstM = data.read("E_dstM")
        srcA = data.read("srcA")
        srcB = data.read("srcB")

        if (e_icode == "0"):  #nop
            nothing()
            e_bch = ""
            e_valE = ""
            e_valM = ""
            e_dstE = ""
            e_dstM = ""
        elif (e_icode == "1"):  #halt
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
        elif (e_icode == "2"):  #rrmovl
            e_valE = e_valA
        elif (e_icode == "3"):  #irmovl
            e_valE = e_valC
        elif (e_icode == "4"):  #rmmovl
            aluA = e_valB
            aluB = e_valC
            e_dstM = data.alu("0", aluA, aluB)
            e_valM = e_valA
        elif (e_icode == "5"):  #mrmovl
            aluA = e_valB
            aluB = e_valC
            e_dstM = data.alu("0", aluA, aluB)
            e_dstE = srcA
        elif (e_icode == "6"):  #op
            aluA = e_valA
            aluB = e_valB
            e_valE = data.alu(e_ifunc, aluA, aluB)
            e_dstE = srcB
        elif (e_icode == "7"):  #jmp
            if (data.check(e_ifunc)):
                data.write("D_index", "X")
                data.write("D_icode", "0")
                data.write("pc", "X")
                data.write("F_icode", "0")
                jmp_pc = arc(e_valC)
                e_bch = jmp_pc
        elif (e_icode == "8"):  #call
            e_valM = e_valB
            aluA = e_valA
            aluB = "04000000"
            e_valE = data.alu("1", aluB, aluA)
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            call_pc = arc(e_valC)
            e_bch = call_pc
        elif (e_icode == "9"):  #ret
            aluA = e_valA
            aluB = "04000000"
            e_valE = data.alu("0", aluA, aluB)
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("pc", "X")
            data.write("F_icode", "0")
            e_dstM = e_valA
        elif (e_icode == "a"):  #push
            aluA = e_valB
            aluB = "04000000"
            e_valE = data.alu("1", aluB, aluA)
            e_valM = e_valA
        elif (e_icode == "b"):  #popl
            aluA = e_valB
            aluB = "04000000"
            e_valE = data.alu("0", aluA, aluB)
            e_dstM = e_valB
            e_dstE = srcA

        data.write("M_index", data.read("E_index"))

        data.write("M_icode", e_icode)
        data.write("bch", e_bch)
        data.write("M_valE", e_valE)
        data.write("M_valM", e_valM)
        data.write("M_dstE", e_dstE)
        data.write("M_dstM", e_dstM)
        #Decode----------------------------------
        #print("Decode:")

        d_icode = ""
        d_ifunc = ""
        d_valC = ""
        d_valA = ""
        d_valB = ""
        d_dstE = ""
        d_dstM = ""
        d_srcA = ""
        d_srcB = ""

        d_icode = data.read("D_icode")
        d_ifunc = data.read("D_ifunc")
        ra = data.read("rA")
        rb = data.read("rB")
        d_valC = data.read("D_valC")
        d_valP = data.read("D_valP")

        if (d_icode == "0"):  #nop
            nothing()
            d_ifunc = ""
            d_valC = ""
            d_valA = ""
            d_valB = ""
            d_dstE = ""
            d_dstM = ""
            d_srcA = ""
            d_srcB = ""
        elif (d_icode == "1"):  #halt
            nothing()
        elif (d_icode == "2"):  #rrmovl
            Temp = forwarding(ra)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            d_dstE = rb
            d_srcA = ra
            d_srcB = rb
        elif (d_icode == "3"):  #irmovl
            d_valA = d_valC
            d_dstE = rb
        elif (
                d_icode == "4"
        ):  #rmmovl-------------------------------------------------------------
            Temp = forwarding(ra)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding(rb)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = rb
        elif (
                d_icode == "5"
        ):  #mrmovl-------------------------------------------------------
            Temp = forwarding(rb)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valB = Temp
            d_dstE = ra
            d_srcA = ra
            d_srcB = rb
        elif (
                d_icode == "6"
        ):  #op------------------------------------------------------------------------
            Temp = forwarding(ra)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding(rb)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = rb
            d_dstE = rb
        elif (d_icode == "7"):  #jmp----------------------
            nothing()
        elif (d_icode == "8"):  #call---------------------
            Temp = forwarding("4")
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            d_valB = d_valP
            d_srcA = "4"
            d_dstE = "4"
        elif (d_icode == "9"):  #ret--------------------------------------
            Temp = forwarding("4")
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            d_dstE = "4"
            d_srcA = "4"
        elif (d_icode == "a"):  #push-------------------------------------
            Temp = forwarding(ra)
            if (Temp == "X"):
                data.setstall()
            else:
                d_valA = Temp
            Temp = forwarding("4")
            if (Temp == "X"):
                data.setstall()
            else:
                d_valB = Temp
            d_srcA = ra
            d_srcB = "4"
            d_dstE = "4"
        elif (
                d_icode == "b"
        ):  #popl---------------------------------------------------------------
            Temp = forwarding("4")
            if (Temp == "4"):
                data.setstall()
            else:
                d_valB = Temp
            d_dstE = ra
            d_srcA = ra
            d_srcB = "4"

        if (data.isstall()):
            data.write("E_icode", "0")
            data.write("E_index", "X")
        else:
            data.write("E_index", data.read("D_index"))

            data.write("E_icode", d_icode)
            data.write("E_ifunc", d_ifunc)
            data.write("E_valC", d_valC)
            data.write("E_valA", d_valA)
            data.write("E_valB", d_valB)
            data.write("E_dstE", d_dstE)
            data.write("E_dstM", d_dstM)
            data.write("srcA", d_srcA)
            data.write("srcB", d_srcB)
#Fetch---------------------------------------------
#print("Fetch:")

        f_icode = ""
        f_ifunc = ""
        f_ra = ""
        f_rb = ""
        f_valC = ""
        f_valP = ""

        f_icode = data.read("F_icode")
        pc = data.read("pc")

        if (pc == "X"):
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("F_icode", "1")
            f_ifunc = ""
            f_ra = ""
            f_rb = ""
            f_valC = ""
            f_valP = ""
            data.write("D_ifunc", f_ifunc)
            data.write("rA", f_ra)
            data.write("rB", f_rb)
            data.write("D_valC", f_valC)
            data.write("D_valP", f_valP)
        elif (f_icode == "0"):
            data.write("D_index", "X")
            data.write("D_icode", "0")
            data.write("F_icode", "1")
            f_ifunc = ""
            f_ra = ""
            f_rb = ""
            f_valC = ""
            f_valP = ""
            data.write("D_ifunc", f_ifunc)
            data.write("rA", f_ra)
            data.write("rB", f_rb)
            data.write("D_valC", f_valC)
            data.write("D_valP", f_valP)
        elif (data.isstall()):
            nothing()
        else:
            pred_pc = data.next(pc)
            s = data.MemoryGet(pc)

            if (s[0] == "0"):  #nop
                nothing()
            if (s[0] == "1"):  #halt
                nothing()
            if (s[0] == "2"):  #rrmovl
                f_ra = s[2]
                f_rb = s[3]
            if (s[0] == "3"):  #irmovl
                f_rb = s[3]
                f_valC = s[4:12]
            if (s[0] == "4"):  #rmmovl
                f_ra = s[2]
                f_rb = s[3]
                f_valC = s[4:12]
            if (s[0] == "5"):  #mrmovl
                f_ra = s[2]
                f_rb = s[3]
                f_valC = s[4:12]
            if (s[0] == "6"):  #op
                f_ra = s[2]
                f_rb = s[3]
            if (s[0] == "7"):  #jmp
                f_valC = s[2:10]
            if (s[0] == "8"):  #call
                f_valC = s[2:10]
                f_ra = "4"
            if (s[0] == "9"):  #ret
                f_ra = "4"
                nothing()
            if (s[0] == "a"):  #push
                f_ra = s[2]
                f_rb = "4"
            if (s[0] == "b"):  #pop
                f_ra = s[2]
                f_rb = "4"

            f_icode = s[0]
            f_ifunc = s[1]

            if (data.isstall()):
                nothing()
            else:
                data.write("D_index", pc)
                data.write("D_icode", f_icode)
                data.write("D_ifunc", f_ifunc)
                data.write("rA", f_ra)
                data.write("rB", f_rb)
                data.write("D_valC", f_valC)
                if (pred_pc[0] != "X"):
                    data.write("D_valP", arc(pred_pc))
                else:
                    data.write("D_valP", "X")


#PC------------------------------------
#print("PC:")
        if (data.isstall()):
            data.start()
            return 0

        if (ret_pc != ""):
            data.write("pc", ret_pc)
        elif (call_pc != ""):
            data.write("pc", call_pc)
        elif (jmp_pc != ""):
            data.write("pc", jmp_pc)
        elif (pred_pc != ""):
            data.write("pc", pred_pc)
        return 0