Author: Tim Felgentreff <[email protected]>
Branch: 64bit
Changeset: r578:1246e0869fc3
Date: 2014-01-13 17:12 +0100
http://bitbucket.org/pypy/lang-smalltalk/changeset/1246e0869fc3/

Log:    use untagged integers wherever possible, fix most tests

diff --git a/spyvm/constants.py b/spyvm/constants.py
--- a/spyvm/constants.py
+++ b/spyvm/constants.py
@@ -1,3 +1,4 @@
+import sys
 from rpython.rlib.jit import elidable
 
 from spyvm.tool.bitmanipulation import splitter
@@ -145,9 +146,9 @@
 from rpython.rlib.rarithmetic import LONG_BIT
 TAGGED_MAXINT = 2 ** (LONG_BIT - 2) - 1
 TAGGED_MININT = -2 ** (LONG_BIT - 2)
-
 TAGGED_MASK = int(2 ** (LONG_BIT - 1) - 1)
-
+MAXINT = sys.maxint
+MININT = -sys.maxint-1
 
 # Entries into SO_SPECIAL_SELECTORS_ARRAY:
 #(#+ 1 #- 1 #< 1 #> 1 #<= 1 #>= 1 #= 1 #~= 1 #* 1 #/ 1 #\\ 1 #@ 1 #bitShift: 1 
#// 1 #bitAnd: 1 #bitOr: 1 #at: 1 #at:put: 2 #size 0 #next 0 #nextPut: 1 #atEnd 
0 #== 1 #class 0 #blockCopy: 1 #value 0 #value: 1 #do: 1 #new 0 #new: 1 #x 0 #y 
0)
diff --git a/spyvm/interpreter.py b/spyvm/interpreter.py
--- a/spyvm/interpreter.py
+++ b/spyvm/interpreter.py
@@ -43,7 +43,6 @@
         self.space = space
         self.image = image
         self.image_name = image_name
-        self.startup_time = time.time()
         self.max_stack_depth = max_stack_depth
         self.remaining_stack_depth = max_stack_depth
         self._loop = False
@@ -204,7 +203,7 @@
     def time_now(self):
         import time
         from rpython.rlib.rarithmetic import intmask
-        return intmask(int((time.time() - self.startup_time) * 1000) & 
constants.TAGGED_MASK)
+        return intmask(int(time.time() * 1000) - self.image.startup_time)
 
     def padding(self, symbol=' '):
         return symbol * (self.max_stack_depth - self.remaining_stack_depth)
diff --git a/spyvm/iproxy.py b/spyvm/iproxy.py
new file mode 100644
--- /dev/null
+++ b/spyvm/iproxy.py
@@ -0,0 +1,11 @@
+from spyvm.system import IS_64BIT
+
+if not IS_64BIT:
+    from spyvm import interpreter_proxy
+    IProxy = interpreter_proxy._InterpreterProxy()
+else:
+    from spyvm.error import PrimitiveFailedError
+    class _InterpreterProxy():
+        def call(self, signature, interp, s_frame, argcount, s_method):
+            raise PrimitiveFailedError
+    IProxy = _InterpreterProxy()
diff --git a/spyvm/model.py b/spyvm/model.py
--- a/spyvm/model.py
+++ b/spyvm/model.py
@@ -188,8 +188,9 @@
 
     def unwrap_uint(self, space):
         val = self.value
-        if val < 0:
-            raise error.UnwrappingError("got negative integer")
+        # if val < 0:
+        #     raise error.UnwrappingError("got negative integer")
+        # XXX: Assume that caller knows what he does
         return r_uint(val)
 
 
@@ -399,7 +400,7 @@
         else:
             # bounds-check for primitive access is done in the primitive
             assert n0 == 1
-            return space.wrap_positive_1word_int(intmask(r))
+            return space.wrap_positive_1word_int(intmask(r_uint32(r)))
 
     def store(self, space, n0, w_obj):
         from rpython.rlib.rstruct.ieee import float_unpack, float_pack
@@ -756,14 +757,21 @@
         byte0 = ord(self.getchar(byte_index0))
         byte1 = ord(self.getchar(byte_index0 + 1)) << 8
         if byte1 & 0x8000 != 0:
-            byte1 = intmask(-65536 | byte1) # -65536 = 0xffff0000
+            byte1 = intmask(intmask(r_uint32(0xffff0000)) | 
intmask(r_uint32(byte1)))
         return space.wrap_int(byte1 | byte0)
 
     def short_atput0(self, space, index0, w_value):
         from rpython.rlib.rarithmetic import int_between
         i_value = space.unwrap_int(w_value)
-        if not int_between(-32768, i_value, 0x8000):
-            raise error.PrimitiveFailedError
+        if constants.LONG_BIT == 64:
+            if (not int_between(0, i_value, 0x8000) and
+                not int_between(0, i_value ^ (0xffffffff), 0x8000)):
+                raise error.PrimitiveFailedError
+        elif constants.LONG_BIT == 32:
+            if not int_between(-0x8000, i_value, 0x8000):
+                raise error.PrimitiveFailedError
+        else:
+            raise NotImplementedError
         byte_index0 = index0 * 2
         byte0 = i_value & 0xff
         byte1 = (i_value & 0xff00) >> 8
@@ -894,20 +902,27 @@
         else:
             short = (word >> 16) & 0xffff
         if short & 0x8000 != 0:
-            short = -65536 | short # -65536 = 0xffff0000
-        return space.wrap_int(intmask(short))
+            short = intmask(r_uint32(0xffff0000)) | short
+        return space.wrap_int(intmask(r_uint32(short)))
 
     def short_atput0(self, space, index0, w_value):
-        from rpython.rlib.rarithmetic import int_between
+        from rpython.rlib.rarithmetic import int_between, widen
         i_value = space.unwrap_int(w_value)
-        if not int_between(-32768, i_value, 0x8000):
-            raise error.PrimitiveFailedError
+        if constants.LONG_BIT == 64:
+            if (not int_between(0, i_value, 0x8000) and
+                not int_between(0, i_value ^ (0xffffffff), 0x8000)):
+                raise error.PrimitiveFailedError
+        elif constants.LONG_BIT == 32:
+            if not int_between(-0x8000, i_value, 0x8000):
+                raise error.PrimitiveFailedError
+        else:
+            raise NotImplementedError
         word_index0 = index0 / 2
-        word = intmask(self.getword(word_index0))
+        word = intmask(r_uint32(self.getword(word_index0)))
         if index0 % 2 == 0:
-            word = (word & -65536) | (i_value & 0xffff) # -65536 = 0xffff0000
+            word = intmask(r_uint32((word & widen(r_uint32(0xffff0000))) | 
(i_value & 0xffff)))
         else:
-            word = (i_value << 16) | (word & 0xffff)
+            word = intmask(r_uint32((i_value << 16) | (word & 0xffff)))
         value = r_uint(word)
         self.setword(word_index0, value)
 
@@ -938,10 +953,10 @@
         if self.words is None:
             return self.c_words
         else:
-            from spyvm.iproxy import sqIntArrayPtr
+            from spyvm.iproxy import IProxy
             size = self.size()
             old_words = self.words
-            c_words = self.c_words = lltype.malloc(sqIntArrayPtr.TO, size, 
flavor='raw')
+            c_words = self.c_words = lltype.malloc(IProxy.sqIntArrayPtr.TO, 
size, flavor='raw')
             for i in range(size):
                 c_words[i] = intmask(old_words[i])
             self.words = None
diff --git a/spyvm/objspace.py b/spyvm/objspace.py
--- a/spyvm/objspace.py
+++ b/spyvm/objspace.py
@@ -201,45 +201,23 @@
     def wrap_int(self, val):
         from spyvm import constants
         assert isinstance(val, int)
-        if int_between(constants.TAGGED_MININT, val,
-                        constants.TAGGED_MAXINT + 1):
-            return model.W_SmallInteger(val)
-        # We can't build large integers here, because we don't know what to do
-        # with negativ vals: raise an error or interpret them as 4-byte 
positive?
-        raise WrappingError("integer too large to fit into a tagged pointer")
+        # We don't use tagging
+        return model.W_SmallInteger(val)
 
     def wrap_uint(self, val):
         from rpython.rlib.objectmodel import we_are_translated
         if not we_are_translated():
-            assert val <= 0xFFFFFFFF
+            assert val <= (2**constants.LONG_BIT) - 1
         if val < 0:
             raise WrappingError("negative integer")
-        if val >= 0:
-            try:
-                return self.wrap_positive_1word_int(intmask(val))
-            except WrappingError:
-                pass
-        # XXX this code sucks
-        import math
-        bytes_len = int(math.log(val) / math.log(0xff)) + 1
-        if bytes_len <= 4:
+        else:
             return self.wrap_positive_1word_int(intmask(val))
-        else:
-            return self._wrap_uint_loop(val, bytes_len)
-
-    @jit.unroll_safe
-    def _wrap_uint_loop(self, val, bytes_len):
-        w_result = model.W_BytesObject(self,
-                    self.classtable['w_LargePositiveInteger'], bytes_len)
-        for i in range(bytes_len):
-            w_result.setchar(i, chr(intmask((val >> i*8) & 255)))
-        return w_result
 
     def wrap_positive_1word_int(self, val):
         # This will always return a positive value.
         # XXX: For now, we assume that val is at most 1word, i.e. overflows are
-        # checked for before wrapping.
-        if int_between(0, val, constants.TAGGED_MAXINT + 1):
+        # checked for before wrapping. Also, we ignore tagging.
+        if int_between(0, val, constants.MAXINT):
             return model.W_SmallInteger(val)
         else:
             return model.W_LargePositiveInteger1Word(val)
diff --git a/spyvm/primitives.py b/spyvm/primitives.py
--- a/spyvm/primitives.py
+++ b/spyvm/primitives.py
@@ -471,7 +471,9 @@
     s_class = w_cls.as_class_get_shadow(interp.space)
     if s_class.isvariable():
         raise PrimitiveFailedError()
-    return s_class.new()
+    w_inst = s_class.new()
+    s_frame.store_instance(w_cls, w_inst)
+    return w_inst
 
 @expose_primitive(NEW_WITH_ARG, unwrap_spec=[object, int])
 def func(interp, s_frame, w_cls, size):
@@ -480,9 +482,11 @@
     if not s_class.isvariable() and size != 0:
         raise PrimitiveFailedError()
     try:
-        return s_class.new(size)
+        w_inst = s_class.new(size)
     except MemoryError:
         raise PrimitiveFailedError
+    s_frame.store_instance(w_cls, w_inst)
+    return w_inst
 
 @expose_primitive(ARRAY_BECOME_ONE_WAY, unwrap_spec=[object, object])
 def func(interp, s_frame, w_obj1, w_obj2):
@@ -538,7 +542,7 @@
         match_w = []
         from rpython.rlib import rgc
 
-        if USES_STM:
+        if not USES_STM:
             roots = [gcref for gcref in rgc.get_rpy_roots() if gcref]
             pending = roots[:]
             while pending:
@@ -887,9 +891,9 @@
     elif signature[0] == "VMDebugging":
         from spyvm.plugins.vmdebugging import DebuggingPlugin
         return DebuggingPlugin.call(signature[1], interp, s_frame, argcount, 
s_method)
-    else:
-        from spyvm.iproxy import IProxy
-        return IProxy.call(signature, interp, s_frame, argcount, s_method)
+    # else:
+    #     from spyvm.iproxy import IProxy
+    #     return IProxy.call(signature, interp, s_frame, argcount, s_method)
     raise PrimitiveFailedError
 
 @expose_primitive(COMPILED_METHOD_FLUSH_CACHE, unwrap_spec=[object])
diff --git a/spyvm/shadow.py b/spyvm/shadow.py
--- a/spyvm/shadow.py
+++ b/spyvm/shadow.py
@@ -346,7 +346,7 @@
         assert not isinstance(w_selector, str)
         self.initialize_methoddict()
         s_method = w_method.as_compiledmethod_get_shadow(self.space)
-        self.s_methoddict().methoddict[w_selector] = s_method
+        self.s_methoddict().methoddict[w_selector.as_string()] = s_method
         if isinstance(w_method, model.W_CompiledMethod):
             s_method.w_compiledin = self.w_self()
 
@@ -460,18 +460,19 @@
 
     __metaclass__ = extendabletype
     _attrs_ = ['_s_sender', '_pc', '_temps_and_stack',
-            '_stack_ptr', 'instances_w']
-
+               '_stack_ptr', 'instances_w', '_stores_instances']
     _virtualizable_ = [
         "_s_sender", "_pc",
         "_temps_and_stack[*]", "_stack_ptr",
-        "_w_self", "_w_self_size"
+        "_w_self", "_w_self_size",
+        "_stores_instances"
     ]
 
     def __init__(self, space, w_self):
         self._s_sender = None
         AbstractRedirectingShadow.__init__(self, space, w_self)
         self.instances_w = {}
+        self._stores_instances = False
 
     @staticmethod
     def is_block_context(w_pointers, space):
@@ -728,13 +729,22 @@
             self._w_self_size = w_self.size()
             return w_self
 
+    def store_instance(self, w_class, w_obj):
+        if not jit.promote(self._stores_instances):
+            return
+        else:
+            instances_w = self.instances_w.get(w_class, None)
+            if instances_w is not None:
+                instances_w.append(w_obj)
+
     def store_instances_array(self, w_class, match_w):
         # used for primitives 77 & 78
+        self._stores_instances = True
         self.instances_w[w_class] = match_w
 
-    @jit.elidable
     def instances_array(self, w_class):
-        return self.instances_w.get(w_class, None)
+        if jit.promote(self._stores_instances):
+            return self.instances_w.get(w_class, None)
 
     # ______________________________________________________________________
     # Debugging printout
diff --git a/spyvm/squeakimage.py b/spyvm/squeakimage.py
--- a/spyvm/squeakimage.py
+++ b/spyvm/squeakimage.py
@@ -361,8 +361,12 @@
 # ____________________________________________________________
 
 class SqueakImage(object):
+    _immutable_fields_ = ["special_objects", "w_asSymbol",
+                          "w_simulateCopyBits", "version", "is_modern",
+                          "startup_time"]
 
     def from_reader(self, space, reader):
+        import time
         from spyvm import constants
         self.special_objects = [g_object.w_object for g_object in
                                 reader.chunks[reader.specialobjectspointer]
@@ -376,6 +380,7 @@
         self.lastWindowSize = reader.lastWindowSize
         self.version = reader.version
         self.is_modern = reader.version.magic > 6502
+        self.startup_time = int(time.time() * 1000)
         self.run_spy_hacks(space)
 
     def run_spy_hacks(self, space):
diff --git a/spyvm/test/jittest/base.py b/spyvm/test/jittest/base.py
--- a/spyvm/test/jittest/base.py
+++ b/spyvm/test/jittest/base.py
@@ -55,10 +55,12 @@
             return self.run_simulated(tmpdir, code)
 
     def run_binary(self, spy, tmpdir, code):
+        print code
         proc = subprocess.Popen(
             [str(spy), "-r", code, BenchmarkImage],
             cwd=str(tmpdir),
-            env={"PYPYLOG": "jit-log-opt:%s" % tmpdir.join("x.pypylog")}
+            env={"PYPYLOG": "jit-log-opt:%s" % tmpdir.join("x.pypylog"),
+                 "SDL_VIDEODRIVER": "dummy"}
         )
         proc.wait()
         data = logparser.parse_log_file(str(tmpdir.join("x.pypylog")), 
verbose=False)
diff --git a/spyvm/test/jittest/test_basic.py b/spyvm/test/jittest/test_basic.py
--- a/spyvm/test/jittest/test_basic.py
+++ b/spyvm/test/jittest/test_basic.py
@@ -9,43 +9,36 @@
         0 to: 10000000 do: [:t|nil].
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0xa15ec7c>)
-        i60 = int_le(i49, 10000)
-        guard_true(i60, descr=<Guard0xa15ec40>)
-        i61 = int_add(i49, 1)
-        i62 = int_sub(i61, -1073741824)
-        i63 = uint_lt(i62, -2147483648)
-        guard_true(i63, descr=<Guard0xa15ec04>)
-        i64 = int_sub(i57, 1)
-        setfield_gc(ConstPtr(ptr54), i64, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 16>)
-        i65 = int_le(i64, 0)
-        guard_false(i65, descr=<Guard0xa15ebc8>)
-        jump(p0, p3, i61, p12, p14, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, i64, descr=TargetToken(169145008))
+        guard_not_invalidated(descr=<Guard0x1ba06b0>),
+        i57 = int_le(i50, 10000000),
+        guard_true(i57, descr=<Guard0x1ba0640>),
+        i58 = int_add(i50, 1),
+        i59 = int_sub(i54, 1),
+        setfield_gc(ConstPtr(ptr51), i59, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i60 = int_le(i59, 0),
+        guard_false(i60, descr=<Guard0x1ba05d0>),
+        jump(p0, i3, p4, i58, p13, p15, p17, p19, p21, p23, p25, p27, p29, 
p31, p33, p35, p37, p39, i59, descr=TargetToken(27868504))
         """)
         self.assert_matches(traces[0].bridges[0], """
-        f18 = call(ConstClass(ll_time.ll_time_time), descr=<Callf 8 EF=4>)
-        setfield_gc(ConstPtr(ptr19), 10000, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>)
-        guard_no_exception(descr=<Guard0x9732d30>)
-        f22 = float_sub(f18, 1387380038.806162)
-        f24 = float_mul(f22, 1000.000000)
-        i25 = cast_float_to_int(f24)
-        i27 = int_and(i25, 2147483647)
-        i28 = getfield_gc(ConstPtr(ptr19), descr=<FieldS 
spyvm.interpreter.Interpreter.inst_next_wakeup_tick 36>)
-        i29 = int_is_zero(i28)
-        guard_true(i29, descr=<Guard0x9761ad8>)
-        label(p0, p1, i16, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, 
p14, p15, descr=TargetToken(158475216))
-        guard_class(p0, ConstClass(MethodContextShadow), 
descr=<Guard0x9761a9c>)
-        p31 = getfield_gc(p0, descr=<FieldP 
spyvm.shadow.MethodContextShadow.inst__w_method 44>)
-        guard_value(p31, ConstPtr(ptr32), descr=<Guard0x9761a60>)
-        guard_not_invalidated(descr=<Guard0x9761a24>)
-        i34 = int_le(i16, 1000000000)
-        guard_true(i34, descr=<Guard0x97619e8>)
-        i36 = int_add(i16, 1)
-        i38 = int_sub(i36, -1073741824)
-        i40 = uint_lt(i38, -2147483648)
-        guard_true(i40, descr=<Guard0x97619ac>)
-        setfield_gc(ConstPtr(ptr19), 9999, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>)
-        jump(p0, p1, i36, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, 
p14, p15, 9999, descr=TargetToken(158474976))
+        f19 = call(ConstClass(ll_time.ll_time_time), descr=<Callf 8 EF=4>),
+        setfield_gc(ConstPtr(ptr20), 10000, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        guard_no_exception(descr=<Guard0x3596800>),
+        f23 = float_mul(f19, 1000.000000),
+        i24 = cast_float_to_int(f23),
+        i26 = int_sub(i24, 1389627640615),
+        i27 = getfield_gc(ConstPtr(ptr20), descr=<FieldS 
spyvm.interpreter.Interpreter.inst_next_wakeup_tick 48>),
+        i28 = int_is_zero(i27),
+        guard_true(i28, descr=<Guard0x35a8330>),
+        label(p0, i1, p2, i17, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, 
p14, p15, p16, descr=TargetToken(55082592)),
+        guard_class(p0, ConstClass(MethodContextShadow), 
descr=<Guard0x35a82c0>),
+        p30 = getfield_gc(p0, descr=<FieldP 
spyvm.shadow.MethodContextShadow.inst__w_method 88>),
+        guard_value(p30, ConstPtr(ptr31), descr=<Guard0x35a8250>),
+        guard_not_invalidated(descr=<Guard0x35a81e0>),
+        i33 = int_le(i17, 10000000),
+        guard_true(i33, descr=<Guard0x35a8170>),
+        i35 = int_add(i17, 1),
+        setfield_gc(ConstPtr(ptr20), 9999, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        jump(p0, i1, p2, i35, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, 
p14, p15, p16, 9999, descr=TargetToken(55082328))
         """)
 
     def test_constant_string(self, spy, tmpdir):
@@ -56,18 +49,15 @@
         ^ i
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0x92520c4>)
-        i68 = int_le(i58, 10000)
-        guard_true(i68, descr=<Guard0x9252088>)
-        i69 = int_add(i58, 1)
-        i70 = int_sub(i69, -1073741824)
-        i71 = uint_lt(i70, -2147483648)
-        guard_true(i71, descr=<Guard0x925204c>)
-        i72 = int_sub(i65, 1)
-        setfield_gc(ConstPtr(ptr55), i72, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 16>)
-        i73 = int_le(i72, 0)
-        guard_false(i73, descr=<Guard0x9252010>)
-        jump(p0, p3, i69, p12, p14, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, i72, descr=TargetToken(153187472))
+        guard_not_invalidated(descr=<Guard0x2f3b750>),
+        i65 = int_le(i59, 10000),
+        guard_true(i65, descr=<Guard0x2f3b6e0>),
+        i66 = int_add(i59, 1),
+        i67 = int_sub(i62, 1),
+        setfield_gc(ConstPtr(ptr56), i67, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i68 = int_le(i67, 0),
+        guard_false(i68, descr=<Guard0x2f3b670>),
+        jump(p0, i3, p4, i66, p13, p15, p17, p19, p21, p23, p25, p27, p29, 
p31, p33, p35, p37, p39, i67, descr=TargetToken(48782592))
         """)
 
     def test_constant_string_equal2(self, spy, tmpdir):
@@ -83,21 +73,18 @@
         ^ i
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0x9c66a60>),
-        i76 = int_le(i65, 100000),
-        guard_true(i76, descr=<Guard0x9c66628>),
-        i77 = int_add(i65, 1),
-        i78 = int_sub(i77, -1073741824),
-        i79 = uint_lt(i78, -2147483648),
-        guard_true(i79, descr=<Guard0x9c622a4>),
-        i80 = int_sub(i73, 2),
-        setfield_gc(ConstPtr(ptr70), i80, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
-        i81 = int_le(i80, 0),
-        guard_false(i81, descr=<Guard0x9bbbe5c>),
-        i83 = arraylen_gc(p49, descr=<ArrayU 1>),
-        i84 = arraylen_gc(p53, descr=<ArrayU 1>),
-        i85 = arraylen_gc(p57, descr=<ArrayU 1>),
-        jump(p0, p3, i77, p12, p14, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, i80, p49, p53, p57, descr=TargetToken(163738864))
+        guard_not_invalidated(descr=<Guard0x27c6560>),
+        i73 = int_le(i66, 100000),
+        guard_true(i73, descr=<Guard0x27c64f0>),
+        i74 = int_add(i66, 1),
+        i75 = int_sub(i70, 2),
+        setfield_gc(ConstPtr(ptr67), i75, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i76 = int_le(i75, 0),
+        guard_false(i76, descr=<Guard0x27c6480>),
+        i78 = arraylen_gc(p50, descr=<ArrayU 1>),
+        i79 = arraylen_gc(p54, descr=<ArrayU 1>),
+        i80 = arraylen_gc(p58, descr=<ArrayU 1>),
+        jump(p0, i3, p4, i74, p13, p15, p17, p19, p21, p23, p25, p27, p29, 
p31, p33, p35, p37, p39, i75, p50, p54, p58, descr=TargetToken(40565840))
         """)
 
     def test_constant_string_var_equal(self, spy, tmpdir):
@@ -117,18 +104,15 @@
         ^ i
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0x967e7cc>),
-        i73 = int_le(i62, 100000),
-        guard_true(i73, descr=<Guard0x967e790>),
-        i74 = int_add(i62, 1),
-        i75 = int_sub(i74, -1073741824),
-        i76 = uint_lt(i75, -2147483648),
-        guard_true(i76, descr=<Guard0x967e754>),
-        i77 = int_sub(i70, 1),
-        setfield_gc(ConstPtr(ptr67), i77, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
-        i78 = int_le(i77, 0),
-        guard_false(i78, descr=<Guard0x967e718>),
-        jump(p0, p3, i74, p8, p10, p12, p14, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, p40, p42, p44, p46, i77, descr=TargetToken(157713840))
+        guard_not_invalidated(descr=<Guard0x33981e0>),
+        i70 = int_le(i63, 100000),
+        guard_true(i70, descr=<Guard0x3398170>),
+        i71 = int_add(i63, 1),
+        i72 = int_sub(i67, 1),
+        setfield_gc(ConstPtr(ptr64), i72, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i73 = int_le(i72, 0),
+        guard_false(i73, descr=<Guard0x3398100>),
+        jump(p0, i3, p4, i71, p9, p11, p13, p15, p21, p23, p25, p27, p29, p31, 
p33, p35, p37, p39, p41, p43, p45, p47, i72, descr=TargetToken(52952232))
         """)
 
     def test_bitInvert32(self, spy, tmpdir):
@@ -140,26 +124,20 @@
         ].
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0x2b48f70>),
-        i90 = int_le(i79, 1000000),
-        guard_true(i90, descr=<Guard0x2b49590>),
-        setfield_gc(ConstPtr(ptr60), i67, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_remaining_stack_depth 56>),
-        i91 = int_ge(i73, 0),
-        guard_true(i91, descr=<Guard0x2b49520>),
-        i92 = int_xor(i73, i72),
-        i93 = int_sub(i92, -4611686018427387904),
-        i94 = uint_lt(i93, -9223372036854775808),
-        guard_true(i94, descr=<Guard0x2b494b0>),
-        i95 = int_add(i79, 1),
-        i96 = int_sub(i95, -4611686018427387904),
-        setfield_gc(ConstPtr(ptr60), i63, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_remaining_stack_depth 56>),
-        i97 = uint_lt(i96, -9223372036854775808),
-        guard_true(i97, descr=<Guard0x2b49440>),
-        i98 = int_sub(i87, 3),
-        setfield_gc(ConstPtr(ptr60), i98, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
-        i99 = int_le(i98, 0),
-        guard_false(i99, descr=<Guard0x2b493d0>),
-        jump(p0, p3, i92, p8, i95, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, p40, p42, i67, i52, i72, i63, i98, 
descr=TargetToken(44203440))
+        guard_not_invalidated(descr=<Guard0x2a59750>),
+        i83 = int_le(i76, 1000000),
+        guard_true(i83, descr=<Guard0x2a596e0>),
+        setfield_gc(ConstPtr(ptr61), i68, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_remaining_stack_depth 56>),
+        i84 = int_ge(i74, 0),
+        guard_true(i84, descr=<Guard0x2a59670>),
+        i85 = int_xor(i74, i73),
+        i86 = int_add(i76, 1),
+        i87 = int_sub(i79, 3),
+        setfield_gc(ConstPtr(ptr61), i64, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_remaining_stack_depth 56>),
+        setfield_gc(ConstPtr(ptr61), i87, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i88 = int_le(i87, 0),
+        guard_false(i88, descr=<Guard0x2a59600>),
+        jump(p0, i3, p4, i85, p9, i86, p17, p19, p21, p23, p25, p27, p29, p31, 
p33, p35, p37, p39, p41, p43, i68, i53, i73, i87, i64, 
descr=TargetToken(43310512))
         """)
 
     def test_bitXor(self, spy, tmpdir):
@@ -172,20 +150,41 @@
         ].
         """)
         self.assert_matches(traces[0].loop, """
-        guard_not_invalidated(descr=<Guard0x28565d0>),
-        i82 = int_le(i72, 1000000),
-        guard_true(i82, descr=<Guard0x2856560>),
-        i83 = int_xor(i66, i63),
-        i84 = int_sub(i83, -4611686018427387904),
-        i85 = uint_lt(i84, -9223372036854775808),
-        guard_true(i85, descr=<Guard0x28564f0>),
-        i86 = int_add(i72, 1),
-        i87 = int_sub(i86, -4611686018427387904),
-        i88 = uint_lt(i87, -9223372036854775808),
-        guard_true(i88, descr=<Guard0x2856480>),
-        i90 = int_sub(i79, 1),
-        setfield_gc(ConstPtr(ptr57), i90, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
-        i91 = int_le(i90, 0),
-        guard_false(i91, descr=<Guard0x2856410>),
-        jump(p0, p3, i83, p8, i86, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, p40, p42, i63, i90, descr=TargetToken(41172136))
+        guard_not_invalidated(descr=<Guard0x2dc3d70>),
+        i75 = int_le(i69, 1000000),
+        guard_true(i75, descr=<Guard0x2dc3d00>),
+        i76 = int_xor(i67, i64),
+        i77 = int_add(i69, 1),
+        i78 = int_sub(i72, 1),
+        setfield_gc(ConstPtr(ptr58), i78, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i79 = int_le(i78, 0),
+        guard_false(i79, descr=<Guard0x2dc3c90>),
+        jump(p0, i3, p4, i76, p9, i77, p17, p19, p21, p23, p25, p27, p29, p31, 
p33, p35, p37, p39, p41, p43, i64, i78, descr=TargetToken(46857208))
         """)
+
+    def test_DisplayFlash(self, spy, tmpdir):
+        traces = self.run(spy, tmpdir, """
+        | path |
+        Display
+            setExtent: 200@200;
+            beDisplay;
+            fillWhite.
+        path := OrderedCollection new: 16.
+        #(40 115 190 265) do: [:y |
+            #(60 160 260 360) do: [:x |
+                path add: x@y]].
+        1 to: 16 do: [:index |
+            BitBlt exampleAt: (path at: index) rule: index - 1 fillColor: nil].
+        """)
+        self.assert_matches(traces[0].loop, """
+        guard_not_invalidated(descr=<Guard0x1898410>),
+        i74 = int_le(i68, 1000000),
+        guard_true(i74, descr=<Guard0x18983a0>),
+        i75 = int_xor(i66, i63),
+        i76 = int_add(i68, 1),
+        i77 = int_sub(i71, 1),
+        setfield_gc(ConstPtr(ptr57), i77, descr=<FieldS 
spyvm.interpreter.Interpreter.inst_interrupt_check_counter 24>),
+        i78 = int_le(i77, 0),
+        guard_false(i78, descr=<Guard0x1898330>),
+        jump(p0, p3, i75, p8, i76, p16, p18, p20, p22, p24, p26, p28, p30, 
p32, p34, p36, p38, p40, p42, i63, i77, descr=TargetToken(24673448))
+        """)
diff --git a/spyvm/test/test_interpreter.py b/spyvm/test/test_interpreter.py
--- a/spyvm/test/test_interpreter.py
+++ b/spyvm/test/test_interpreter.py
@@ -431,7 +431,7 @@
         assert s_active_context.w_sender() == w_frame
         assert s_active_context.stack() == []
         assert 
w_active_context.as_methodcontext_get_shadow(space).w_receiver().is_same_object(w_object)
-        assert 
w_active_context.as_methodcontext_get_shadow(space).w_method().is_same_object(shadow.s_methoddict().methoddict[w_foo].w_self())
+        assert 
w_active_context.as_methodcontext_get_shadow(space).w_method().is_same_object(shadow.s_methoddict().methoddict[w_foo.as_string()].w_self())
         assert s_frame.stack() == []
         step_in_interp(s_active_context)
         w_active_context = step_in_interp(s_active_context)
@@ -602,7 +602,7 @@
     s_frame.push(space.w_one)
     w_active_context = step_in_interp(s_frame)
     s_active_context = w_active_context.as_context_get_shadow(space)
-    assert w_active_context.as_methodcontext_get_shadow(space).s_method() == 
shadow.s_methoddict().methoddict[w_symbol]
+    assert w_active_context.as_methodcontext_get_shadow(space).s_method() == 
shadow.s_methoddict().methoddict[w_symbol.as_string()]
     assert s_active_context.w_receiver() is w_object
     assert 
w_active_context.as_methodcontext_get_shadow(space).gettemp(0).is_same_object(space.w_one)
     assert s_active_context.stack() == []
@@ -662,7 +662,7 @@
         assert s_active_context.w_sender() == w_caller_context
         assert s_active_context.stack() == []
         assert 
w_active_context.as_methodcontext_get_shadow(space).w_receiver() == w_object
-        meth = 
w_specificclass.as_class_get_shadow(space).s_methoddict().methoddict[foo]
+        meth = 
w_specificclass.as_class_get_shadow(space).s_methoddict().methoddict[foo.as_string()]
         assert s_active_context.w_method() == meth.w_self()
         assert s_caller_context.stack() == []
 
diff --git a/spyvm/test/test_miniimage.py b/spyvm/test/test_miniimage.py
--- a/spyvm/test/test_miniimage.py
+++ b/spyvm/test/test_miniimage.py
@@ -343,21 +343,28 @@
 
 def test_large_positive_integer_operations():
     w_result = perform(interp.space.w_SmallInteger, "maxVal")
-    w_result = perform(w_result, "+", space.wrap_int(42))
+    w_result = perform(w_result, "+", space.wrap_int(2 * 
interp.space.unwrap_int(w_result)))
     assert w_result is not None
-    assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+    if constants.LONG_BIT == 32:
+        assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+    else:
+        assert isinstance(w_result, model.W_SmallInteger)
 
     w_result = perform(interp.space.w_SmallInteger, "maxVal")
     w_result = perform(w_result, "*", w_result)
     assert w_result is not None
-    assert isinstance(w_result, model.W_BytesObject)
+    if constants.LONG_BIT == 32:
+        assert isinstance(w_result, model.W_BytesObject)
+    else:
+        assert isinstance(w_result, model.W_SmallInteger)
 
 def test_compiling_large_positive_integer():
-    sourcecode = """aLargeInteger
+    if constants.LONG_BIT == 32:
+        sourcecode = """aLargeInteger
                         ^ 16rFFFFFFFF"""
-    perform(w(10).getclass(space), "compile:classified:notifying:", 
w(sourcecode), w('pypy'), w(None))
-    w_result = perform(w(10), "aLargeInteger")
-    assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+        perform(w(10).getclass(space), "compile:classified:notifying:", 
w(sourcecode), w('pypy'), w(None))
+        w_result = perform(w(10), "aLargeInteger")
+        assert isinstance(w_result, model.W_LargePositiveInteger1Word)
 
 def test_doesNotUnderstand():
     w_dnu = interp.space.objtable["w_doesNotUnderstand"]
@@ -410,7 +417,7 @@
     selectors_w = w_methoddict._shadow.methoddict.keys()
     w_sel = None
     for sel in selectors_w:
-        if sel.as_string() == 'size':
+        if sel == 'size':
             w_sel = sel
     size = prim(primitives.PERFORM_WITH_ARGS, [w_o, w_sel, []])
     assert size.value == 3
diff --git a/spyvm/test/test_model.py b/spyvm/test/test_model.py
--- a/spyvm/test/test_model.py
+++ b/spyvm/test/test_model.py
@@ -3,8 +3,8 @@
 import socket
 from spyvm import model, shadow
 from spyvm.shadow import MethodNotFound
-from spyvm import objspace, error, display
-from rpython.rlib.rarithmetic import intmask, r_uint32 as r_uint
+from spyvm import objspace, error, display, constants
+from rpython.rlib.rarithmetic import intmask, r_uint32
 
 
 mockclass = objspace.bootstrap_class
@@ -50,6 +50,7 @@
     assert w_bytes.getchar(0) == "\x00"
     py.test.raises(IndexError, lambda: w_bytes.getchar(20))
 
[email protected]("constants.LONG_BIT == 64")
 def test_c_bytes_object():
     w_class = mockclass(space, 0, format=shadow.BYTES)
     w_bytes = w_class.as_class_get_shadow(space).new(20)
@@ -75,6 +76,7 @@
     assert w_bytes.getword(0) == 0
     py.test.raises(AssertionError, lambda: w_bytes.getword(20))
 
[email protected]("constants.LONG_BIT == 64")
 def test_c_word_object():
     w_class = mockclass(space, 0, format=shadow.WORDS)
     w_bytes = w_class.as_class_get_shadow(space).new(20)
@@ -266,18 +268,25 @@
 
     b.setword(0, 3221225472)
     r = b.at0(space, 0)
-    assert isinstance(r, (model.W_BytesObject, 
model.W_LargePositiveInteger1Word))
-    assert r.size() == 4
+    if constants.LONG_BIT == 32:
+        assert isinstance(r, (model.W_BytesObject, 
model.W_LargePositiveInteger1Word))
+        assert r.size() == 4
+    else:
+        assert isinstance(r, (model.W_SmallInteger))
 
 def test_float_at():
     b = model.W_Float(64.0)
     r = b.fetch(space, 0)
-    assert isinstance(r, model.W_LargePositiveInteger1Word)
-    assert r.size() == 4
-    assert space.unwrap_int(r.at0(space, 0)) == 0
-    assert space.unwrap_int(r.at0(space, 1)) == 0
-    assert space.unwrap_int(r.at0(space, 2)) == 80
-    assert space.unwrap_int(r.at0(space, 3)) == 64
+    assert isinstance(r, model.W_LargePositiveInteger1Word) or (isinstance(r, 
model.W_SmallInteger) and r.value > 0)
+    if not isinstance(r, model.W_SmallInteger):
+        assert False
+        assert r.size() == 4
+        assert space.unwrap_int(r.at0(space, 0)) == 0
+        assert space.unwrap_int(r.at0(space, 1)) == 0
+        assert space.unwrap_int(r.at0(space, 2)) == 80
+        assert space.unwrap_int(r.at0(space, 3)) == 64
+    else:
+        assert r.value == ((64 << 24) + (80 << 16))
     r = b.fetch(space, 1)
     assert isinstance(r, model.W_SmallInteger)
     assert r.value == 0
@@ -313,7 +322,7 @@
     for i in range(4):
         target.atput0(space, i, source.at0(space, i))
         assert target.at0(space, i) == source.at0(space, i)
-    assert hex(r_uint(target.value)) == hex(r_uint(source.value))
+    assert hex(r_uint32(target.value)) == hex(r_uint32(source.value))
 
 def test_BytesObject_short_at():
     target = model.W_BytesObject(space, None, 4)
@@ -335,8 +344,8 @@
 
 def test_WordsObject_short_at():
     target = model.W_WordsObject(space, None, 2)
-    target.setword(0, r_uint(0x00018000))
-    target.setword(1, r_uint(0x80010111))
+    target.setword(0, r_uint32(0x00018000))
+    target.setword(1, r_uint32(0x80010111))
     assert target.short_at0(space, 0).value == intmask(0xffff8000)
     assert target.short_at0(space, 1).value == intmask(0x0001)
     assert target.short_at0(space, 2).value == intmask(0x0111)
@@ -345,7 +354,7 @@
 def test_WordsObject_short_atput():
     target = model.W_WordsObject(space, None, 2)
     target.short_atput0(space, 0, space.wrap_int(0x0100))
-    target.short_atput0(space, 1, space.wrap_int(-1))
+    target.short_atput0(space, 1, space.wrap_int(intmask(0xffffffff)))
     target.short_atput0(space, 2, space.wrap_int(intmask(0xffff8000)))
     target.short_atput0(space, 3, space.wrap_int(0x7fff))
     assert target.getword(0) == 0xffff0100
@@ -356,26 +365,21 @@
     # double-free bug
     def get_pixelbuffer(self):
         from rpython.rtyper.lltypesystem import lltype, rffi
-        return lltype.malloc(rffi.ULONGP.TO, self.width * self.height * 32, 
flavor='raw')
+        return lltype.malloc(rffi.UINTP.TO, self.width * self.height * 32, 
flavor='raw')
     display.SDLDisplay.get_pixelbuffer = get_pixelbuffer
     d = display.SDLDisplay("test")
     d.set_video_mode(32, 10, 1)
 
     target = model.W_DisplayBitmap.create(space, space.w_Array, 10, 1, d)
-    target.setword(0, r_uint(0xFF00))
+    target.setword(0, r_uint32(0xFF00))
     assert bin(target.getword(0)) == bin(0xFF00)
-    target.setword(0, r_uint(0x00FF00FF))
+    target.setword(0, r_uint32(0x00FF00FF))
     assert bin(target.getword(0)) == bin(0x00FF00FF)
-    target.setword(0, r_uint(0xFF00FF00))
+    target.setword(0, r_uint32(0xFF00FF00))
     assert bin(target.getword(0)) == bin(0xFF00FF00)
+    # Mapping 1-bit to 8-bit depth
     for i in xrange(8):
-        assert target.pixelbuffer[i] == 0xff000000
-    for i in xrange(8, 16):
-        assert target.pixelbuffer[i] == 0xffffffff
-    for i in xrange(16, 24):
-        assert target.pixelbuffer[i] == 0xff000000
-    for i in xrange(24, 32):
-        assert target.pixelbuffer[i] == 0xffffffff
+        assert target.pixelbuffer[i] == 0x01010101
 
 
 @py.test.mark.skipif("socket.gethostname() == 'precise32'")
diff --git a/spyvm/test/test_objectspace.py b/spyvm/test/test_objectspace.py
--- a/spyvm/test/test_objectspace.py
+++ b/spyvm/test/test_objectspace.py
@@ -40,16 +40,17 @@
     => 27670116110564327424
     """
 
-    from rpython.rlib.rarithmetic import r_uint32 as r_uint
+    from rpython.rlib.rarithmetic import r_uint
     for num in [0, 1, 41, 100, 2**31, sys.maxint + 1, -1]:
         num = r_uint(num)
         assert space.unwrap_uint(space.wrap_uint(num)) == num
     for num in [-1, -100, -sys.maxint]:
         with py.test.raises(objspace.WrappingError):
             space.wrap_uint(num)
-    for obj in [space.wrap_char('a'), space.wrap_int(-1)]:
+    for obj in [space.wrap_char('a')]:
         with py.test.raises(objspace.UnwrappingError):
             space.unwrap_uint(obj)
+    assert space.unwrap_uint(space.wrap_int(-1)) == r_uint(-1)
     # byteobj = space.wrap_uint(0x100000000)
     # assert isinstance(byteobj, model.W_BytesObject)
     # byteobj.bytes.append('\x01')
@@ -65,7 +66,8 @@
         with py.test.raises(AssertionError):
             space.wrap_int(num)
 
-    from rpython.rlib.rarithmetic import intmask
-    for num in [0x7fffffff, intmask(0x80000000)]:
-        with py.test.raises(objspace.WrappingError):
-            space.wrap_int(num)
+    # XXX: We ignore tagging now -- not sure if this is ok
+    # from rpython.rlib.rarithmetic import intmask
+    # for num in [0x7fffffff, intmask(0x80000000)]:
+    #     with py.test.raises(objspace.WrappingError):
+    #         space.wrap_int(num)
diff --git a/spyvm/test/test_primitives.py b/spyvm/test/test_primitives.py
--- a/spyvm/test/test_primitives.py
+++ b/spyvm/test/test_primitives.py
@@ -68,7 +68,7 @@
     assert prim(primitives.ADD, [3,4]).value == 7
 
 def test_small_int_add_fail():
-    w_result = prim_fails(primitives.ADD, [constants.TAGGED_MAXINT, 2])
+    w_result = prim_fails(primitives.ADD, [constants.MAXINT, 2])
     # assert isinstance(w_result, model.W_LargePositiveInteger1Word)
     # assert w_result.value == constants.TAGGED_MAXINT + 2
     # prim_fails(primitives.ADD, [constants.TAGGED_MAXINT, 
constants.TAGGED_MAXINT * 2])
@@ -77,21 +77,21 @@
     assert prim(primitives.SUBTRACT, [5,9]).value == -4
 
 def test_small_int_minus_fail():
-    prim_fails(primitives.SUBTRACT, [constants.TAGGED_MININT,1])
+    prim_fails(primitives.SUBTRACT, [constants.MININT,1])
     prim_fails(primitives.SUBTRACT,
-               [constants.TAGGED_MININT, constants.TAGGED_MAXINT])
+               [constants.MININT, constants.MAXINT])
 
 def test_small_int_multiply():
     assert prim(primitives.MULTIPLY, [6,3]).value == 18
 
 def test_small_int_multiply_overflow():
-    w_result = prim_fails(primitives.MULTIPLY, [constants.TAGGED_MAXINT, 2])
+    w_result = prim_fails(primitives.MULTIPLY, [constants.MAXINT, 2])
     #assert isinstance(w_result, model.W_LargePositiveInteger1Word)
     #assert w_result.value == constants.TAGGED_MAXINT * 2
-    prim_fails(primitives.MULTIPLY, [constants.TAGGED_MAXINT, 
constants.TAGGED_MAXINT])
-    prim_fails(primitives.MULTIPLY, [constants.TAGGED_MAXINT, -4])
-    prim_fails(primitives.MULTIPLY, [constants.TAGGED_MININT, 
constants.TAGGED_MAXINT])
-    prim_fails(primitives.MULTIPLY, [constants.TAGGED_MININT, 2])
+    prim_fails(primitives.MULTIPLY, [constants.MAXINT, constants.MAXINT])
+    prim_fails(primitives.MULTIPLY, [constants.MAXINT, -4])
+    prim_fails(primitives.MULTIPLY, [constants.MININT, constants.MAXINT])
+    prim_fails(primitives.MULTIPLY, [constants.MININT, 2])
 
 def test_small_int_divide():
     assert prim(primitives.DIVIDE, [6,3]).value == 2
@@ -176,14 +176,22 @@
 
 def test_small_int_bit_shift_fail():
     from rpython.rlib.rarithmetic import intmask
-    prim_fails(primitives.BIT_SHIFT, [4, 32])
-    prim_fails(primitives.BIT_SHIFT, [4, 31])
-    prim_fails(primitives.BIT_SHIFT, [4, 30])
+    if constants.LONG_BIT == 32:
+        prim_fails(primitives.BIT_SHIFT, [4, 32])
+        prim_fails(primitives.BIT_SHIFT, [4, 31])
+        prim_fails(primitives.BIT_SHIFT, [4, 30])
+    else:
+        prim_fails(primitives.BIT_SHIFT, [4, 64])
+        prim_fails(primitives.BIT_SHIFT, [4, 63])
+        prim_fails(primitives.BIT_SHIFT, [4, 62])
     w_result = prim(primitives.BIT_SHIFT, [4, 29])
-    assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+    if constants.LONG_BIT == 32:
+        assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+    else:
+        assert isinstance(w_result, model.W_SmallInteger)
     assert w_result.value == intmask(4 << 29)
     w_result = prim(primitives.BIT_SHIFT, [4, 28])
-    assert isinstance(w_result, model.W_LargePositiveInteger1Word)
+    assert isinstance(w_result, model.W_SmallInteger)
     assert w_result.value == 4 << 28
 
 def test_smallint_as_float():
@@ -430,16 +438,51 @@
 
 def test_primitive_milliseconds_clock():
     import time
-    start = prim(primitives.MILLISECOND_CLOCK, [0]).value
+    class Image(object):
+        def __init__(self):
+            self.startup_time = int(time.time() * 1000)
+    image = Image()
+
+    interp, w_frame, argument_count = mock([0], None)
+    interp.image = image
+    prim_table[primitives.MILLISECOND_CLOCK](interp, 
w_frame.as_context_get_shadow(space), argument_count-1)
+    start = w_frame.as_context_get_shadow(space).pop().value
+    s_frame = w_frame.as_context_get_shadow(space)
+    assert not s_frame.stackdepth() - s_frame.tempsize() # check args are 
consumed
+
     time.sleep(0.3)
-    stop = prim(primitives.MILLISECOND_CLOCK, [0]).value
+    interp, w_frame, argument_count = mock([0], None)
+    interp.image = image
+    prim_table[primitives.MILLISECOND_CLOCK](interp, 
w_frame.as_context_get_shadow(space), argument_count-1)
+    stop = w_frame.as_context_get_shadow(space).pop().value
+    s_frame = w_frame.as_context_get_shadow(space)
+    assert not s_frame.stackdepth() - s_frame.tempsize() # check args are 
consumed
+
     assert start + 250 <= stop
 
 def test_signal_at_milliseconds():
     import time
-    future = prim(primitives.MILLISECOND_CLOCK, [0]).value + 400
+    class Image(object):
+        def __init__(self):
+            self.startup_time = int(time.time() * 1000)
+    image = Image()
+
+    interp, w_frame, argument_count = mock([0], None)
+    interp.image = image
+    prim_table[primitives.MILLISECOND_CLOCK](interp, 
w_frame.as_context_get_shadow(space), argument_count-1)
+    future = w_frame.as_context_get_shadow(space).pop().value + 400
+    s_frame = w_frame.as_context_get_shadow(space)
+    assert not s_frame.stackdepth() - s_frame.tempsize() # check args are 
consumed
+
     sema = space.w_Semaphore.as_class_get_shadow(space).new()
-    prim(primitives.SIGNAL_AT_MILLISECONDS, [space.w_nil, sema, future])
+
+    interp, w_frame, argument_count = mock([space.w_nil, sema, future], None)
+    interp.image = image
+    prim_table[primitives.SIGNAL_AT_MILLISECONDS](interp, 
w_frame.as_context_get_shadow(space), argument_count-1)
+    res = w_frame.as_context_get_shadow(space).pop()
+    s_frame = w_frame.as_context_get_shadow(space)
+    assert not s_frame.stackdepth() - s_frame.tempsize() # check args are 
consumed
+
     assert space.objtable["w_timerSemaphore"] is sema
 
 def test_inc_gc():
@@ -722,7 +765,7 @@
     # double-free bug
     def get_pixelbuffer(self):
         from rpython.rtyper.lltypesystem import lltype, rffi
-        return lltype.malloc(rffi.ULONGP.TO, self.width * self.height * 32, 
flavor='raw')
+        return lltype.malloc(rffi.UINTP.TO, self.width * self.height * 32, 
flavor='raw')
     display.SDLDisplay.get_pixelbuffer = get_pixelbuffer
 
     assert space.objtable["w_display"] is None
@@ -762,7 +805,7 @@
     # double-free bug
     def get_pixelbuffer(self):
         from rpython.rtyper.lltypesystem import lltype, rffi
-        return lltype.malloc(rffi.ULONGP.TO, self.width * self.height * 32, 
flavor='raw')
+        return lltype.malloc(rffi.UINTP.TO, self.width * self.height * 32, 
flavor='raw')
     display.SDLDisplay.get_pixelbuffer = get_pixelbuffer
 
     mock_display = model.W_PointersObject(space, space.w_Point, 4)
@@ -776,7 +819,7 @@
     class DisplayFlush(Exception):
         pass
 
-    def flush_to_screen_mock(self):
+    def flush_to_screen_mock(self, force=False):
         raise DisplayFlush
 
     try:
@@ -787,6 +830,8 @@
         monkeypatch.undo()
 
 def test_bitblt_copy_bits(monkeypatch):
+    from spyvm.plugins import bitblt
+
     class CallCopyBitsSimulation(Exception):
         pass
     class Image():
@@ -810,7 +855,7 @@
 
     try:
         monkeypatch.setattr(w_frame._shadow, "_sendSelfSelector", perform_mock)
-        monkeypatch.setattr(shadow.BitBltShadow, "sync_cache", sync_cache_mock)
+        monkeypatch.setattr(bitblt.BitBltShadow, "sync_cache", sync_cache_mock)
         with py.test.raises(CallCopyBitsSimulation):
             prim_table[primitives.BITBLT_COPY_BITS](interp, 
w_frame.as_context_get_shadow(space), argument_count-1)
     finally:
diff --git a/spyvm/test/test_shadow.py b/spyvm/test/test_shadow.py
--- a/spyvm/test/test_shadow.py
+++ b/spyvm/test/test_shadow.py
@@ -72,8 +72,8 @@
     classshadow = w_class.as_class_get_shadow(space)
     methoddict = classshadow.s_methoddict().methoddict
     assert len(methods) == len(methoddict)
-    for w_key, value in methoddict.items():
-        assert methods[w_key.as_string()].as_compiledmethod_get_shadow(space) 
is value
+    for key, value in methoddict.items():
+        assert methods[key].as_compiledmethod_get_shadow(space) is value
 
 def method(tempsize=3,argsize=2, bytes="abcde"):
     w_m = model.W_CompiledMethod()
@@ -264,15 +264,15 @@
     version = s_class.version
 
     w_method = model.W_CompiledMethod(0)
-    key = space.wrap_string('foo')
+    w_key = space.wrap_string('foo')
 
     s_md = w_parent.as_class_get_shadow(space).s_methoddict()
     s_md.sync_cache()
     w_ary = s_md._w_self._fetch(constants.METHODDICT_VALUES_INDEX)
-    s_md._w_self.atput0(space, 0, key)
+    s_md._w_self.atput0(space, 0, w_key)
     w_ary.atput0(space, 0, w_method)
 
-    assert s_class.lookup(key) is w_method.as_compiledmethod_get_shadow(space)
+    assert s_class.lookup(w_key) is 
w_method.as_compiledmethod_get_shadow(space)
     assert s_class.version is not version
     assert s_class.version is w_parent.as_class_get_shadow(space).version
 
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