def test_write_failure_recovery_description():
assembler = Assembler386(FakeCPU())
mc = FakeMC()
failargs = [BoxInt(), BoxPtr(), BoxFloat()] * 3
failargs.insert(6, None)
failargs.insert(7, None)
locs = [X86FrameManager.frame_pos(0, INT),
X86FrameManager.frame_pos(1, REF),
X86FrameManager.frame_pos(10, FLOAT),
X86FrameManager.frame_pos(100, INT),
X86FrameManager.frame_pos(101, REF),
X86FrameManager.frame_pos(110, FLOAT),
None,
None,
ebx,
esi,
xmm2]
assert len(failargs) == len(locs)
assembler.write_failure_recovery_description(mc, failargs, locs)
base = 8 + 8*IS_X86_64
nums = [Assembler386.DESCR_INT + 4*(base+0),
Assembler386.DESCR_REF + 4*(base+1),
Assembler386.DESCR_FLOAT + 4*(base+10),
Assembler386.DESCR_INT + 4*(base+100),
Assembler386.DESCR_REF + 4*(base+101),
Assembler386.DESCR_FLOAT + 4*(base+110),
Assembler386.CODE_HOLE,
Assembler386.CODE_HOLE,
Assembler386.DESCR_INT + 4*ebx.value,
Assembler386.DESCR_REF + 4*esi.value,
Assembler386.DESCR_FLOAT + 4*xmm2.value]
double_byte_nums = []
for num in nums[3:6]:
double_byte_nums.append((num & 0x7F) | 0x80)
double_byte_nums.append(num >> 7)
assert mc.content == (nums[:3] + double_byte_nums + nums[6:] +
[assembler.CODE_STOP])
# also test rebuild_faillocs_from_descr(), which should not
# reproduce the holes at all
bytecode = lltype.malloc(rffi.UCHARP.TO, len(mc.content), flavor='raw',
immortal=True)
for i in range(len(mc.content)):
assert 0 <= mc.content[i] <= 255
bytecode[i] = rffi.cast(rffi.UCHAR, mc.content[i])
bytecode_addr = rffi.cast(lltype.Signed, bytecode)
newlocs = assembler.rebuild_faillocs_from_descr(bytecode_addr)
assert ([loc.assembler() for loc in newlocs] ==
[loc.assembler() for loc in locs if loc is not None])
def test_write_failure_recovery_description():
assembler = Assembler386(FakeCPU())
mc = FakeMC()
failargs = [BoxInt(), BoxPtr(), BoxFloat()] * 3
failargs.insert(6, None)
failargs.insert(7, None)
locs = [
X86FrameManager.frame_pos(0, INT),
X86FrameManager.frame_pos(1, REF),
X86FrameManager.frame_pos(10, FLOAT),
X86FrameManager.frame_pos(100, INT),
X86FrameManager.frame_pos(101, REF),
X86FrameManager.frame_pos(110, FLOAT), None, None, ebx, esi, xmm2
]
assert len(failargs) == len(locs)
assembler.write_failure_recovery_description(mc, failargs, locs)
base = 8 + 8 * IS_X86_64
nums = [
Assembler386.DESCR_INT + 4 * (base + 0),
Assembler386.DESCR_REF + 4 * (base + 1),
Assembler386.DESCR_FLOAT + 4 * (base + 10),
Assembler386.DESCR_INT + 4 * (base + 100),
Assembler386.DESCR_REF + 4 * (base + 101),
Assembler386.DESCR_FLOAT + 4 * (base + 110), Assembler386.CODE_HOLE,
Assembler386.CODE_HOLE, Assembler386.DESCR_INT + 4 * ebx.value,
Assembler386.DESCR_REF + 4 * esi.value,
Assembler386.DESCR_FLOAT + 4 * xmm2.value
]
double_byte_nums = []
for num in nums[3:6]:
double_byte_nums.append((num & 0x7F) | 0x80)
double_byte_nums.append(num >> 7)
assert mc.content == (nums[:3] + double_byte_nums + nums[6:] +
[assembler.CODE_STOP])
# also test rebuild_faillocs_from_descr(), which should not
# reproduce the holes at all
bytecode = lltype.malloc(rffi.UCHARP.TO,
len(mc.content),
flavor='raw',
immortal=True)
for i in range(len(mc.content)):
assert 0 <= mc.content[i] <= 255
bytecode[i] = rffi.cast(rffi.UCHAR, mc.content[i])
bytecode_addr = rffi.cast(lltype.Signed, bytecode)
newlocs = assembler.rebuild_faillocs_from_descr(bytecode_addr)
assert ([loc.assembler() for loc in newlocs
] == [loc.assembler() for loc in locs if loc is not None])
def test_write_failure_recovery_description():
assembler = Assembler386(FakeCPU())
mc = FakeMC()
failargs = [BoxInt(), BoxPtr(), BoxFloat()] * 3
failargs.insert(6, None)
failargs.insert(7, None)
locs = [X86FrameManager.frame_pos(0, 1),
X86FrameManager.frame_pos(1, 1),
X86FrameManager.frame_pos(10, 2),
X86FrameManager.frame_pos(100, 1),
X86FrameManager.frame_pos(101, 1),
X86FrameManager.frame_pos(110, 2),
None,
None,
ebx,
esi,
xmm2]
assert len(failargs) == len(locs)
assembler.write_failure_recovery_description(mc, failargs, locs)
nums = [Assembler386.DESCR_INT + 4*(8+0),
Assembler386.DESCR_REF + 4*(8+1),
Assembler386.DESCR_FLOAT + 4*(8+10),
Assembler386.DESCR_INT + 4*(8+100),
Assembler386.DESCR_REF + 4*(8+101),
Assembler386.DESCR_FLOAT + 4*(8+110),
Assembler386.CODE_HOLE,
Assembler386.CODE_HOLE,
Assembler386.DESCR_INT + 4*ebx.op,
Assembler386.DESCR_REF + 4*esi.op,
Assembler386.DESCR_FLOAT + 4*xmm2.op]
double_byte_nums = []
for num in nums[3:6]:
double_byte_nums.append((num & 0x7F) | 0x80)
double_byte_nums.append(num >> 7)
assert mc.content == (nums[:3] + double_byte_nums + nums[6:] +
[assembler.CODE_STOP])
# also test rebuild_faillocs_from_descr(), which should not
# reproduce the holes at all
bytecode = lltype.malloc(rffi.UCHARP.TO, len(mc.content), flavor='raw')
for i in range(len(mc.content)):
assert 0 <= mc.content[i] <= 255
bytecode[i] = rffi.cast(rffi.UCHAR, mc.content[i])
bytecode_addr = rffi.cast(lltype.Signed, bytecode)
newlocs = assembler.rebuild_faillocs_from_descr(bytecode_addr)
assert ([loc.assembler() for loc in newlocs] ==
[loc.assembler() for loc in locs if loc is not None])
# finally, test make_boxes_from_latest_values(), which should
# reproduce the holes
expected_classes = [BoxInt, BoxPtr, BoxFloat,
BoxInt, BoxPtr, BoxFloat,
type(None), type(None),
BoxInt, BoxPtr, BoxFloat]
ptrvalues = {}
S = lltype.GcStruct('S')
for i, cls in enumerate(expected_classes):
if cls == BoxInt:
assembler.fail_boxes_int.setitem(i, 1000 + i)
elif cls == BoxPtr:
s = lltype.malloc(S)
s_ref = lltype.cast_opaque_ptr(llmemory.GCREF, s)
ptrvalues[i] = s_ref
assembler.fail_boxes_ptr.setitem(i, s_ref)
elif cls == BoxFloat:
assembler.fail_boxes_float.setitem(i, 42.5 + i)
boxes = assembler.make_boxes_from_latest_values(bytecode_addr)
assert len(boxes) == len(locs) == len(expected_classes)
for i, (box, expected_class) in enumerate(zip(boxes, expected_classes)):
assert type(box) is expected_class
if expected_class == BoxInt:
assert box.value == 1000 + i
elif expected_class == BoxPtr:
assert box.value == ptrvalues[i]
elif expected_class == BoxFloat:
assert box.value == 42.5 + i