def forwarding(src):#实现转发机制
global e_icode
global e_dstE
global e_valE
global e_valM
global m_icode
global m_dstE
global m_valE
global m_valM
if(((e_icode=="2") or (e_icode=="3") or (e_icode=="6") or (e_icode=="8") or (e_icode=="9") or (e_icode=="a") or (e_icode=="c")) and (e_dstE==src)):
return e_valE#对于一般的冒险，直接转发
if((e_icode=="b") and (src=="4")):
return e_valE#对于pop，push之类的隐含调用寄存器的情况判断
if((e_icode=="d") and (src=="4")):
return e_valE
if((e_icode=="d") and (src=="5")):#对于leave的加载使用冒险判断
return "X"
if(((e_icode=="5") or (e_icode=="b")) and (e_dstE==src)):#对于mrmovl的加载使用冒险判断
return "X"
if(((m_icode=="2") or (m_icode=="3") or (m_icode=="6") or (m_icode=="8") or (m_icode=="9") or (m_icode=="a") or (m_icode=="c")) and (m_dstE==src)):#如果已经进入了memory阶段，就可以直接转发，不需要暂停一个周期
return m_valE#一旦读取到了Memory阶段，那么所有的值都可以转发
if((m_icode=="b") and (src=="4")):
return m_valE
if((m_icode=="d") and (src=="4")):
return m_valE
if((m_icode=="d") and (src=="5")):
return m_valM
if(((m_icode=="5") or (m_icode=="b")) and (m_dstE==src)):
return m_valM
return data.RegRead(src)
def forwarding(src):
global e_icode
global e_dstE
global e_valE
global e_valM
global m_icode
global m_dstE
global m_valE
global m_valM
if (((e_icode == "2") or (e_icode == "3") or (e_icode == "6") or
(e_icode == "8") or (e_icode == "9") or (e_icode == "a"))
and (e_dstE == src)):
return e_valE
if ((e_icode == "b") and (src == "4")):
return e_valE
if (((e_icode == "5") or (e_icode == "b")) and (e_dstE == src)):
return "X"
if (((m_icode == "2") or (m_icode == "3") or (m_icode == "6") or
(m_icode == "8") or (m_icode == "9") or (m_icode == "a"))
and (m_dstE == src)):
return m_valE
if ((m_icode == "b") and (src == "4")):
return m_valE
if (((m_icode == "5") or (m_icode == "b")) and (m_dstE == src)):
return m_valM
return data.RegRead(src)
def getY86():
#global register
register = {}
#global memory
register = {}
register["CF"] = data.read("CF")
register["OF"] = data.read("OF")
register["ZF"] = data.read("ZF")
register["SF"] = data.read("SF")
register["stall"] = data.read("stall")
register["end"] = data.read("end")
register["pc"] = data.read("pc")
register["F_icode"] = data.read("F_icode")
register["D_index"] = data.read("D_index")
register["D_icode"] = data.read("D_icode")
register["D_ifunc"] = data.read("D_ifunc")
register["rA"] = data.read("rA")
register["rB"] = data.read("rB")
register["D_valC"] = data.read("D_valC")
register["D_valP"] = data.read("D_valP")
register["E_index"] = data.read("E_index")
register["E_icode"] = data.read("E_icode")
register["E_ifunc"] = data.read("E_ifunc")
register["E_valC"] = data.read("E_valC")
register["E_valA"] = data.read("E_valA")
register["E_valB"] = data.read("E_valB")
register["E_dstE"] = data.read("E_dstE")
register["E_dstM"] = data.read("E_dstM")
register["srcA"] = data.read("srcA")
register["srcB"] = data.read("srcB")
register["M_index"] = data.read("M_index")
register["M_icode"] = data.read("M_icode")
register["bch"] = data.read("bch")
register["M_valE"] = data.read("M_valE")
register["M_valM"] = data.read("M_valM")
register["M_dstE"] = data.read("M_dstE")
register["M_dstM"] = data.read("M_dstM")
register["W_index"] = data.read("W_index")
register["W_icode"] = data.read("W_icode")
register["W_valE"] = data.read("W_valE")
register["W_valM"] = data.read("W_valM")
register["W_dstE"] = data.read("W_dstE")
register["W_dstM"] = data.read("W_dstM")
register["eax"] = data.RegRead("0")
register["ecx"] = data.RegRead("1")
register["edx"] = data.RegRead("2")
register["ebx"] = data.RegRead("3")
register["esp"] = data.RegRead("4")
register["ebp"] = data.RegRead("5")
register["esi"] = data.RegRead("6")
register["edi"] = data.RegRead("7")
register["total_cycle"] = data.intread("total_cycle")
register["valid_cycle"] = data.intread("valid_cycle")
memory = data.Memory
return register, memory