Method exec

proxyclient/m1n1/proxyutils.py:186–231

(self, op, r0=0, r1=0, r2=0, r3=0, *, silent=False, call=None, ignore_exceptions=False)

    sysl = mrs

    def exec(self, op, r0=0, r1=0, r2=0, r3=0, *, silent=False, call=None, ignore_exceptions=False):
        if callable(call):
            region = REGION_RX_EL1
        elif isinstance(call, tuple):
            call, region = call
        else:
            call, region = self.exec_modes[call]

        if isinstance(op, list):
            op = tuple(op)

        if op in self.inst_cache:
            func = self.inst_cache[op]
        elif isinstance(op, tuple) or isinstance(op, list):
            func = struct.pack(f"<{len(op)}II", *op, 0xd65f03c0) # ret
        elif isinstance(op, int):
            func = struct.pack("<II", op, 0xd65f03c0) # ret
        elif isinstance(op, str):
            c = ARMAsm(op + "; ret", self.code_buffer)
            func = c.data
        elif isinstance(op, bytes):
            func = op
        else:
            raise ValueError()

        if self.mmu_off:
            region = 0

        self.inst_cache[op] = func

        assert len(func) < self.CODE_BUFFER_SIZE
        self.iface.writemem(self.code_buffer, func)
        self.proxy.dc_cvau(self.code_buffer, len(func))
        self.proxy.ic_ivau(self.code_buffer, len(func))

        self.proxy.set_exc_guard(GUARD.SKIP | (GUARD.SILENT if silent else 0))
        ret = call(self.code_buffer | region, r0, r1, r2, r3)
        if not ignore_exceptions:
            cnt = self.proxy.get_exc_count()
            self.proxy.set_exc_guard(GUARD.OFF)
            if cnt:
                raise ProxyError("Exception occurred")
        else:
            self.proxy.set_exc_guard(GUARD.OFF)

        return ret

    inst = exec