Example #1
0
def wrap(cpu, value, in_const_box=False):
    if isinstance(lltype.typeOf(value), lltype.Ptr):
        if lltype.typeOf(value).TO._gckind == 'gc':
            value = lltype.cast_opaque_ptr(llmemory.GCREF, value)
            if in_const_box:
                return history.ConstPtr(value)
            else:
                return history.BoxPtr(value)
        else:
            adr = llmemory.cast_ptr_to_adr(value)
            value = heaptracker.adr2int(adr)
            # fall through to the end of the function
    elif (isinstance(value, float)
          or longlong.is_longlong(lltype.typeOf(value))):
        if isinstance(value, float):
            value = longlong.getfloatstorage(value)
        else:
            value = rffi.cast(lltype.SignedLongLong, value)
        if in_const_box:
            return history.ConstFloat(value)
        else:
            return history.BoxFloat(value)
    elif isinstance(value, str) or isinstance(value, unicode):
        assert len(value) == 1  # must be a character
        value = ord(value)
    elif lltype.typeOf(value) is lltype.SingleFloat:
        value = longlong.singlefloat2int(value)
    else:
        value = intmask(value)
    if in_const_box:
        return history.ConstInt(value)
    else:
        return history.BoxInt(value)
Example #2
0
def wrap(cpu, value, in_const_box=False):
    if isinstance(lltype.typeOf(value), lltype.Ptr):
        if lltype.typeOf(value).TO._gckind == 'gc':
            value = lltype.cast_opaque_ptr(llmemory.GCREF, value)
            if in_const_box:
                return history.ConstPtr(value)
            else:
                res = history.RefFrontendOp(0)
                res.setref_base(value)
                return res
        else:
            value = ptr2int(value)
            # fall through to the end of the function
    elif (isinstance(value, float) or
          longlong.is_longlong(lltype.typeOf(value))):
        if isinstance(value, float):
            value = longlong.getfloatstorage(value)
        else:
            value = rffi.cast(lltype.SignedLongLong, value)
        if in_const_box:
            return history.ConstFloat(value)
        else:
            res = history.FloatFrontendOp(0)
            res.setfloatstorage(value)
            return res
    elif isinstance(value, str) or isinstance(value, unicode):
        assert len(value) == 1     # must be a character
        value = ord(value)
    elif lltype.typeOf(value) is lltype.SingleFloat:
        value = longlong.singlefloat2int(value)
    else:
        value = intmask(value)
    if in_const_box:
        return history.ConstInt(value)
    else:
        res = history.IntFrontendOp(0)
        res.setint(value)
        return res
Example #3
0
 def new_ConstRef(self, x):
     ptrval = lltype.cast_opaque_ptr(llmemory.GCREF, x)
     return history.ConstPtr(ptrval)
Example #4
0
class LLTypeHelper(TypeSystemHelper):

    name = 'lltype'
    functionptr = staticmethod(lltype.functionptr)
    nullptr = staticmethod(lltype.nullptr)
    cast_instance_to_base_ref = staticmethod(cast_instance_to_base_ptr)
    BASETYPE = llmemory.GCREF
    ConstRef = history.ConstPtr
    loops_done_with_this_frame_ref = None # patched by compile.py
    NULLREF = history.ConstPtr.value
    CONST_NULL = history.ConstPtr(NULLREF)

    def new_ConstRef(self, x):
        ptrval = lltype.cast_opaque_ptr(llmemory.GCREF, x)
        return history.ConstPtr(ptrval)

    def get_typeptr(self, obj):
        return obj.typeptr

    def get_FuncType(self, ARGS, RESULT):
        FUNCTYPE = lltype.FuncType(ARGS, RESULT)
        FUNCPTRTYPE = lltype.Ptr(FUNCTYPE)
        return FUNCTYPE, FUNCPTRTYPE

    def get_superclass(self, TYPE):
        SUPER = TYPE.TO._first_struct()[1]
        if SUPER is None:
            return None
        return lltype.Ptr(SUPER)

    def cast_to_instance_maybe(self, TYPE, instance):
        return lltype.cast_pointer(TYPE, instance)
    cast_to_instance_maybe._annspecialcase_ = 'specialize:arg(1)'

    def cast_fnptr_to_root(self, fnptr):
        return llmemory.cast_ptr_to_adr(fnptr)

    def cls_of_box(self, box):
        PTR = lltype.Ptr(rclass.OBJECT)
        obj = lltype.cast_opaque_ptr(PTR, box.getref_base())
        cls = llmemory.cast_ptr_to_adr(obj.typeptr)
        return history.ConstInt(heaptracker.adr2int(cls))

    def instanceOf(self, instbox, clsbox):
        adr = clsbox.getaddr()
        bounding_class = llmemory.cast_adr_to_ptr(adr, rclass.CLASSTYPE)
        real_instance = instbox.getref(rclass.OBJECTPTR)
        return rclass.ll_isinstance(real_instance, bounding_class)

    def get_exception_box(self, etype):
        return history.ConstInt(etype)

    def get_exception_obj(self, evaluebox):
        # only works when translated
        obj = evaluebox.getref(lltype.Ptr(rclass.OBJECT))
        return cast_base_ptr_to_instance(Exception, obj)

    def cast_to_baseclass(self, value):
        return lltype.cast_opaque_ptr(lltype.Ptr(rclass.OBJECT), value)

    @specialize.ll()
    def getlength(self, array):
        return len(array)

    @specialize.ll()
    def getarrayitem(self, array, i):
        return array[i]

    @specialize.ll()
    def setarrayitem(self, array, i, newvalue):
        array[i] = newvalue

    def conststr(self, str):
        ll = llstr(str)
        return history.ConstPtr(lltype.cast_opaque_ptr(llmemory.GCREF, ll))

    # A dict whose keys are refs (like the .value of BoxPtr).
    # It is an r_dict on lltype.  Two copies, to avoid conflicts with
    # the value type.  Note that NULL is not allowed as a key.
    def new_ref_dict(self):
        return r_dict(rd_eq, rd_hash)
    def new_ref_dict_2(self):
        return r_dict(rd_eq, rd_hash)
    def new_ref_dict_3(self):
        return r_dict(rd_eq, rd_hash)

    def cast_vtable_to_hashable(self, cpu, ptr):
        adr = llmemory.cast_ptr_to_adr(ptr)
        return heaptracker.adr2int(adr)

    def cast_from_ref(self, TYPE, value):
        return lltype.cast_opaque_ptr(TYPE, value)
    cast_from_ref._annspecialcase_ = 'specialize:arg(1)'

    def cast_to_ref(self, value):
        return lltype.cast_opaque_ptr(llmemory.GCREF, value)
    cast_to_ref._annspecialcase_ = 'specialize:ll'

    def getaddr_for_box(self, box):
        return box.getaddr()
Example #5
0
 def conststr(self, str):
     ll = llstr(str)
     return history.ConstPtr(lltype.cast_opaque_ptr(llmemory.GCREF, ll))