def ret(RSP: Register, AR: ARegister, DR: DRegister, memory: Memory, PC: PC):
"""
函数返回指令
:param RSP:
:param AR:
:param DR:
:param memory:
:param PC:
:return:
"""
RSP.readData()
AR.writeData()
memory.readData(AR, DR)
DR.readData()
PC.writeData()
RSP.data = RSP.data + 1
def push(regA: Register, RSP: Register, AR: ARegister, DR: DRegister,
memory: Memory):
"""
将指定寄存器的值压入栈中
:param regA:
:param RSP:
:param AR:
:param DR:
:param memory:
:return:
"""
RSP.data = RSP.data - 1
RSP.readData()
AR.writeData()
regA.readData()
DR.writeData()
memory.writeData(AR, DR)
def pop(regA: Register, RSP: Register, AR: ARegister, DR: DRegister,
memory: Memory):
"""
将栈顶值弹出到指定寄存器
:param regA:
:param RSP:
:param AR:
:param DR:
:param memory:
:return:
"""
RSP.readData()
AR.writeData()
memory.readData(AR, DR)
DR.readData()
regA.writeData()
RSP.data = RSP.data + 1
def call(RSP: Register, AR: ARegister, DR: DRegister, memory: Memory, PC: PC,
Reg: Register):
"""
函数调用指令, 注意: 由于在寻址之前需要进行若干操作, 在函数内调用寻址函数
:param RSP:
:param AR:
:param DR:
:param memory:
:param PC:
:param Reg:
:return:
"""
RSP.data = RSP.data - 1
RSP.readData()
AR.writeData()
PC.readData()
DR.writeData()
memory.writeData(AR, DR)
Reg.readData()
PC.writeData()
def shr(rA: Register, rB: Register, psw: Psw):
temp = (rB.data >> rA.data) & (cut_to_64 >> rA.data)
res = temp & cut_to_64
rB.data = res
update_psw(temp, res, psw)
def sar(rA: Register, rB: Register, psw: Psw):
temp = rB.data >> rA.data
res = temp & cut_to_64
rB.data = res
update_psw(temp, res, psw)
def bit_and(rA: Register, rB: Register, psw: Psw):
temp = rB.data & rA.data
res = temp & cut_to_64
rB.data = res
update_psw(temp, res, psw)
def dec(rB: Register, psw: Psw):
temp = rB.data - 1
res = temp & cut_to_64
rB.data = res
update_psw(temp, res, psw)
