#!/usr/bin/env python3
# 
# Cross Platform and Multi Architecture Advanced Binary Emulation Framework

from unicorn.mips_const import UC_MIPS_REG_V0, UC_MIPS_REG_A0, UC_MIPS_REG_A1, UC_MIPS_REG_A2, UC_MIPS_REG_A3

from qiling.cc import QlCommonBaseCC

class mipso32(QlCommonBaseCC):
    _retreg = UC_MIPS_REG_V0
    _argregs = (UC_MIPS_REG_A0, UC_MIPS_REG_A1, UC_MIPS_REG_A2, UC_MIPS_REG_A3) + (None, ) * 12
    _shadow = 4
    _retaddr_on_stack = False

    def setReturnAddress(self, addr: int):
        self.arch.regs.ra = addr

    @staticmethod
    def getNumSlots(argbits: int):
        return 1

    def unwind(self, nslots: int) -> int:
        # TODO: stack frame unwiding?
        return self.arch.regs.ra