def _prepare_call(self, op, save_all_regs=False, first_arg_index=1):
args = [None] * (op.numargs() + 3)
calldescr = op.getdescr()
assert isinstance(calldescr, CallDescr)
assert len(calldescr.arg_classes) == op.numargs() - first_arg_index
for i in range(op.numargs()):
args[i + 3] = self.loc(op.getarg(i))
size = calldescr.get_result_size()
sign = calldescr.is_result_signed()
if sign:
sign_loc = imm(1)
else:
sign_loc = imm(0)
args[1] = imm(size)
args[2] = sign_loc
effectinfo = calldescr.get_extra_info()
if save_all_regs:
gc_level = 2
elif effectinfo is None or effectinfo.check_can_collect():
gc_level = 1
else:
gc_level = 0
args[0] = self._call(op, args, gc_level)
return args
def _prepare_threadlocalref_get(self, op, fcond):
ofs_loc = imm(op.getarg(1).getint())
calldescr = op.getdescr()
size_loc = imm(calldescr.get_result_size())
sign_loc = imm(calldescr.is_result_signed())
res_loc = self.force_allocate_reg(op)
return [ofs_loc, size_loc, sign_loc, res_loc]
def _prepare_threadlocalref_get(self, op, fcond):
ofs_loc = imm(op.getarg(1).getint())
calldescr = op.getdescr()
size_loc = imm(calldescr.get_result_size())
sign_loc = imm(calldescr.is_result_signed())
res_loc = self.force_allocate_reg(op)
return [ofs_loc, size_loc, sign_loc, res_loc]
def _prepare_call(self, op, save_all_regs=False, first_arg_index=1):
args = [None] * (op.numargs() + 3)
calldescr = op.getdescr()
assert isinstance(calldescr, CallDescr)
assert len(calldescr.arg_classes) == op.numargs() - first_arg_index
for i in range(op.numargs()):
args[i + 3] = self.loc(op.getarg(i))
size = calldescr.get_result_size()
sign = calldescr.is_result_signed()
if sign:
sign_loc = imm(1)
else:
sign_loc = imm(0)
args[1] = imm(size)
args[2] = sign_loc
effectinfo = calldescr.get_extra_info()
if save_all_regs:
gc_level = 2
elif effectinfo is None or effectinfo.check_can_collect():
gc_level = 1
else:
gc_level = 0
args[0] = self._call(op, args, gc_level)
return args
def prepare_op_gc_store_indexed(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
value_loc = self.make_sure_var_in_reg(boxes[2], boxes)
index_loc = self.make_sure_var_in_reg(boxes[1], boxes)
assert boxes[3].getint() == 1 # scale
ofs = boxes[4].getint()
size = boxes[5].getint()
return [value_loc, base_loc, index_loc, imm(size), imm(ofs)]
def prepare_op_gc_store_indexed(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
value_loc = self.make_sure_var_in_reg(boxes[2], boxes)
index_loc = self.make_sure_var_in_reg(boxes[1], boxes)
assert boxes[3].getint() == 1 # scale
ofs = boxes[4].getint()
size = boxes[5].getint()
assert check_imm_arg(ofs)
return [value_loc, base_loc, index_loc, imm(size), imm(ofs)]
def _prepare_op_gc_load_indexed(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
index_loc = self.make_sure_var_in_reg(boxes[1], boxes)
assert boxes[2].getint() == 1 # scale
ofs = boxes[3].getint()
nsize = boxes[4].getint()
self.possibly_free_vars_for_op(op)
self.free_temp_vars()
res_loc = self.force_allocate_reg(op)
return [res_loc, base_loc, index_loc, imm(nsize), imm(ofs)]
def _prepare_op_gc_load_indexed(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
index_loc = self.make_sure_var_in_reg(boxes[1], boxes)
assert boxes[2].getint() == 1 # scale
ofs = boxes[3].getint()
nsize = boxes[4].getint()
assert check_imm_arg(ofs)
self.possibly_free_vars_for_op(op)
self.free_temp_vars()
res_loc = self.force_allocate_reg(op)
return [res_loc, base_loc, index_loc, imm(nsize), imm(ofs)]
def prepare_op_gc_store(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
ofs = boxes[1].getint()
value_loc = self.make_sure_var_in_reg(boxes[2], boxes)
size = boxes[3].getint()
ofs_size = default_imm_size if size < 8 else VMEM_imm_size
if check_imm_arg(ofs, size=ofs_size):
ofs_loc = imm(ofs)
else:
ofs_loc = self.get_scratch_reg(INT, boxes)
self.assembler.load(ofs_loc, imm(ofs))
return [value_loc, base_loc, ofs_loc, imm(size)]
def prepare_op_gc_store(self, op, fcond):
boxes = op.getarglist()
base_loc = self.make_sure_var_in_reg(boxes[0], boxes)
ofs = boxes[1].getint()
value_loc = self.make_sure_var_in_reg(boxes[2], boxes)
size = boxes[3].getint()
ofs_size = default_imm_size if size < 8 else VMEM_imm_size
if check_imm_arg(ofs, size=ofs_size):
ofs_loc = imm(ofs)
else:
ofs_loc = self.get_scratch_reg(INT, boxes)
self.assembler.load(ofs_loc, imm(ofs))
return [value_loc, base_loc, ofs_loc, imm(size)]
def prepare_op_finish(self, op, fcond):
# the frame is in fp, but we have to point where in the frame is
# the potential argument to FINISH
descr = op.getdescr()
fail_descr = cast_instance_to_gcref(descr)
# we know it does not move, but well
rgc._make_sure_does_not_move(fail_descr)
fail_descr = rffi.cast(lltype.Signed, fail_descr)
if op.numargs() == 1:
loc = self.make_sure_var_in_reg(op.getarg(0))
locs = [loc, imm(fail_descr)]
else:
locs = [imm(fail_descr)]
return locs
def prepare_op_guard_exception(self, op, fcond):
boxes = op.getarglist()
arg0 = ConstInt(rffi.cast(lltype.Signed, op.getarg(0).getint()))
loc = self.make_sure_var_in_reg(arg0)
loc1 = self.get_scratch_reg(INT, boxes)
if op in self.longevity:
resloc = self.force_allocate_reg(op, boxes)
self.possibly_free_var(op)
else:
resloc = None
pos_exc_value = imm(self.cpu.pos_exc_value())
pos_exception = imm(self.cpu.pos_exception())
arglocs = self._prepare_guard(op,
[loc, loc1, resloc, pos_exc_value, pos_exception])
return arglocs
def prepare_op_guard_exception(self, op, fcond):
boxes = op.getarglist()
arg0 = ConstInt(rffi.cast(lltype.Signed, op.getarg(0).getint()))
loc = self.make_sure_var_in_reg(arg0)
loc1 = self.get_scratch_reg(INT, boxes)
if op in self.longevity:
resloc = self.force_allocate_reg(op, boxes)
self.possibly_free_var(op)
else:
resloc = None
pos_exc_value = imm(self.cpu.pos_exc_value())
pos_exception = imm(self.cpu.pos_exception())
arglocs = self._prepare_guard(
op, [loc, loc1, resloc, pos_exc_value, pos_exception])
return arglocs
def prepare_op_guard_class(self, op, fcond):
assert not isinstance(op.getarg(0), Const)
boxes = op.getarglist()
x = self.make_sure_var_in_reg(boxes[0], boxes)
y_val = rffi.cast(lltype.Signed, boxes[1].getint())
return self._prepare_guard(op, [x, imm(y_val)])
def _write_to_mem(self, value_loc, base_loc, ofs_loc, scale, fcond=c.AL):
if scale.value == 3:
assert value_loc.is_vfp_reg()
# vstr only supports imm offsets
# so if the ofset is too large we add it to the base and use an
# offset of 0
if ofs_loc.is_core_reg():
tmploc, save = self.get_tmp_reg([value_loc, base_loc, ofs_loc])
assert not save
self.mc.ADD_rr(tmploc.value, base_loc.value, ofs_loc.value)
base_loc = tmploc
ofs_loc = imm(0)
else:
assert ofs_loc.is_imm()
assert ofs_loc.value % 4 == 0
self.mc.VSTR(value_loc.value, base_loc.value, ofs_loc.value)
elif scale.value == 2:
if ofs_loc.is_imm():
self.mc.STR_ri(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.STR_rr(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
elif scale.value == 1:
if ofs_loc.is_imm():
self.mc.STRH_ri(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.STRH_rr(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
elif scale.value == 0:
if ofs_loc.is_imm():
self.mc.STRB_ri(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.STRB_rr(value_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
assert 0
def _prepare_op_gc_load(self, op, fcond):
a0 = op.getarg(0)
ofs = op.getarg(1).getint()
nsize = op.getarg(2).getint() # negative for "signed"
base_loc = self.make_sure_var_in_reg(a0)
immofs = imm(ofs)
ofs_size = default_imm_size if abs(nsize) < 8 else VMEM_imm_size
if check_imm_arg(ofs, size=ofs_size):
ofs_loc = immofs
else:
ofs_loc = self.get_scratch_reg(INT, [a0])
self.assembler.load(ofs_loc, immofs)
self.possibly_free_vars_for_op(op)
self.free_temp_vars()
res_loc = self.force_allocate_reg(op)
return [base_loc, ofs_loc, res_loc, imm(nsize)]
def _prepare_op_gc_load(self, op, fcond):
a0 = op.getarg(0)
ofs = op.getarg(1).getint()
nsize = op.getarg(2).getint() # negative for "signed"
base_loc = self.make_sure_var_in_reg(a0)
immofs = imm(ofs)
ofs_size = default_imm_size if abs(nsize) < 8 else VMEM_imm_size
if check_imm_arg(ofs, size=ofs_size):
ofs_loc = immofs
else:
ofs_loc = self.get_scratch_reg(INT, [a0])
self.assembler.load(ofs_loc, immofs)
self.possibly_free_vars_for_op(op)
self.free_temp_vars()
res_loc = self.force_allocate_reg(op)
return [base_loc, ofs_loc, res_loc, imm(nsize)]
def _emit_op_gc_load(self, op, arglocs, regalloc, fcond):
base_loc, ofs_loc, res_loc, nsize_loc = arglocs
nsize = nsize_loc.value
signed = nsize < 0
scale = get_scale(abs(nsize))
self._load_from_mem(res_loc, base_loc, ofs_loc, imm(scale), signed, fcond)
return fcond
def prepare_op_guard_class(self, op, fcond):
assert not isinstance(op.getarg(0), Const)
boxes = op.getarglist()
x = self.make_sure_var_in_reg(boxes[0], boxes)
y_val = rffi.cast(lltype.Signed, boxes[1].getint())
return self._prepare_guard(op, [x, imm(y_val)])
def test_mov_imm_to_big_stacklock(self):
val = imm(100)
s = stack(8191)
expected = [ mi('gen_load_int', lr.value, 100, cond=AL),
mi('gen_load_int', ip.value, s.value, cond=AL),
mi('STR_rr', lr.value, fp.value, ip.value, cond=AL),
]
self.mov(val, s, expected)
def test_mov_big_imm_to_stacklock(self):
val = imm(65536)
s = stack(7)
expected = [
mi('gen_load_int', lr.value, 65536, cond=AL),
mi('STR_ri', lr.value, fp.value, imm=s.value, cond=AL),
]
self.mov(val, s, expected)
def test_mov_big_imm_to_stacklock(self):
val = imm(65536)
s = stack(7)
expected = [
mi('gen_load_int', lr.value, 65536, cond=AL),
mi('STR_ri', lr.value, fp.value, imm=s.value, cond=AL),
]
self.mov(val, s, expected)
def test_mov_imm_to_big_stacklock(self):
val = imm(100)
s = stack(8191)
expected = [ mi('gen_load_int', lr.value, 100, cond=AL),
mi('gen_load_int', ip.value, s.value, cond=AL),
mi('STR_rr', lr.value, fp.value, ip.value, cond=AL),
]
self.mov(val, s, expected)
def _genop_call_assembler(self, op, arglocs, regalloc, fcond):
if len(arglocs) == 4:
[argloc, vloc, result_loc, tmploc] = arglocs
else:
[argloc, result_loc, tmploc] = arglocs
vloc = imm(0)
self._store_force_index(self._find_nearby_operation(+1))
self.call_assembler(op, argloc, vloc, result_loc, tmploc)
return fcond
def emit_guard_call_assembler(self, op, guard_op, arglocs, regalloc, fcond):
if len(arglocs) == 4:
[argloc, vloc, result_loc, tmploc] = arglocs
else:
[argloc, result_loc, tmploc] = arglocs
vloc = imm(0)
self.call_assembler(op, guard_op, argloc, vloc, result_loc, tmploc)
self._emit_guard_may_force(guard_op, regalloc._prepare_guard(guard_op))
return fcond
def test_from_imm(self):
s = raw_stack(1024)
i = imm(999)
e = [
mi('gen_load_int', lr.value, i.value, cond=AL),
mi('gen_load_int', ip.value, s.value, cond=AL),
mi('STR_rr', lr.value, sp.value, ip.value, cond=AL),
]
self.mov(i, s, e)
def test_from_imm(self):
s = raw_stack(1024)
i = imm(999)
e = [
mi('gen_load_int', lr.value, i.value, cond=AL),
mi('gen_load_int', ip.value, s.value, cond=AL),
mi('STR_rr', lr.value, sp.value, ip.value, cond=AL),
]
self.mov(i, s, e)
def _prepare_guard(self, op, args=None):
if args is None:
args = []
args.append(imm(self.frame_manager.get_frame_depth()))
for arg in op.getfailargs():
if arg:
args.append(self.loc(arg))
else:
args.append(None)
return args
def _prepare_guard(self, op, args=None):
if args is None:
args = []
args.append(imm(self.frame_manager.get_frame_depth()))
for arg in op.getfailargs():
if arg:
args.append(self.loc(arg))
else:
args.append(None)
return args
def emit_op_gc_store_indexed(self, op, arglocs, regalloc, fcond):
value_loc, base_loc, index_loc, size_loc, ofs_loc = arglocs
assert index_loc.is_core_reg()
# add the base offset
if ofs_loc.value > 0:
self.mc.ADD_ri(r.ip.value, index_loc.value, imm=ofs_loc.value)
index_loc = r.ip
scale = get_scale(size_loc.value)
self._write_to_mem(value_loc, base_loc, index_loc, imm(scale), fcond)
return fcond
def emit_opx_threadlocalref_get(self, op, arglocs, regalloc, fcond):
ofs_loc, size_loc, sign_loc, res_loc = arglocs
assert ofs_loc.is_imm()
assert size_loc.is_imm()
assert sign_loc.is_imm()
ofs = self.saved_threadlocal_addr
self.load_reg(self.mc, res_loc, r.sp, ofs)
scale = get_scale(size_loc.value)
signed = sign_loc.value != 0
self._load_from_mem(res_loc, res_loc, ofs_loc, imm(scale), signed, fcond)
return fcond
def _prepare_call(self, op, force_store=[], save_all_regs=False,
first_arg_index=1):
args = [None] * (op.numargs() + 3)
calldescr = op.getdescr()
assert isinstance(calldescr, CallDescr)
assert len(calldescr.arg_classes) == op.numargs() - first_arg_index
for i in range(op.numargs()):
args[i + 3] = self.loc(op.getarg(i))
size = calldescr.get_result_size()
sign = calldescr.is_result_signed()
if sign:
sign_loc = imm(1)
else:
sign_loc = imm(0)
args[1] = imm(size)
args[2] = sign_loc
args[0] = self._call(op, args, force_store, save_all_regs)
return args
def _prepare_call(self, op, force_store=[], save_all_regs=False,
first_arg_index=1):
args = [None] * (op.numargs() + 3)
calldescr = op.getdescr()
assert isinstance(calldescr, CallDescr)
assert len(calldescr.arg_classes) == op.numargs() - first_arg_index
for i in range(op.numargs()):
args[i + 3] = self.loc(op.getarg(i))
size = calldescr.get_result_size()
sign = calldescr.is_result_signed()
if sign:
sign_loc = imm(1)
else:
sign_loc = imm(0)
args[1] = imm(size)
args[2] = sign_loc
args[0] = self._call(op, args, force_store, save_all_regs)
return args
def _emit_op_gc_load_indexed(self, op, arglocs, regalloc, fcond):
res_loc, base_loc, index_loc, nsize_loc, ofs_loc = arglocs
assert index_loc.is_core_reg()
nsize = nsize_loc.value
signed = nsize < 0
# add the base offset
if ofs_loc.value > 0:
self.mc.ADD_ri(r.ip.value, index_loc.value, imm=ofs_loc.value)
index_loc = r.ip
#
scale = get_scale(abs(nsize))
self._load_from_mem(res_loc, base_loc, index_loc, imm(scale), signed, fcond)
return fcond
def emit_op_setinteriorfield_gc(self, op, arglocs, regalloc, fcond):
(base_loc, index_loc, value_loc, ofs_loc, ofs, itemsize, fieldsize) = arglocs
scale = get_scale(fieldsize.value)
tmploc, save = self.get_tmp_reg([base_loc, index_loc, value_loc, ofs_loc])
assert not save
self.mc.gen_load_int(tmploc.value, itemsize.value)
self.mc.MUL(tmploc.value, index_loc.value, tmploc.value)
if ofs.value > 0:
if ofs_loc.is_imm():
self.mc.ADD_ri(tmploc.value, tmploc.value, ofs_loc.value)
else:
self.mc.ADD_rr(tmploc.value, tmploc.value, ofs_loc.value)
self._write_to_mem(value_loc, base_loc, tmploc, imm(scale), fcond)
return fcond
def _load_from_mem(self, res_loc, base_loc, ofs_loc, scale, signed=False, fcond=c.AL):
# Load a value of '1 << scale' bytes, from the memory location
# 'base_loc + ofs_loc'. Note that 'scale' is not used to scale
# the offset!
#
if scale.value == 3:
assert res_loc.is_vfp_reg()
# vldr only supports imm offsets
# if the offset is in a register we add it to the base and use a
# tmp reg
if ofs_loc.is_core_reg():
tmploc, save = self.get_tmp_reg([base_loc, ofs_loc])
assert not save
self.mc.ADD_rr(tmploc.value, base_loc.value, ofs_loc.value)
base_loc = tmploc
ofs_loc = imm(0)
else:
assert ofs_loc.is_imm()
assert ofs_loc.value % 4 == 0
self.mc.VLDR(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
elif scale.value == 2:
if ofs_loc.is_imm():
self.mc.LDR_ri(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.LDR_rr(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
elif scale.value == 1:
if ofs_loc.is_imm():
if signed:
self.mc.LDRSH_ri(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.LDRH_ri(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
if signed:
self.mc.LDRSH_rr(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.LDRH_rr(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
elif scale.value == 0:
if ofs_loc.is_imm():
if signed:
self.mc.LDRSB_ri(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.LDRB_ri(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
if signed:
self.mc.LDRSB_rr(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
self.mc.LDRB_rr(res_loc.value, base_loc.value, ofs_loc.value, cond=fcond)
else:
assert 0
def emit_op_getinteriorfield_gc(self, op, arglocs, regalloc, fcond):
(base_loc, index_loc, res_loc, ofs_loc, ofs, itemsize, fieldsize) = arglocs
scale = get_scale(fieldsize.value)
tmploc, save = self.get_tmp_reg([base_loc, ofs_loc])
assert not save
self.mc.gen_load_int(tmploc.value, itemsize.value)
self.mc.MUL(tmploc.value, index_loc.value, tmploc.value)
descr = op.getdescr()
assert isinstance(descr, InteriorFieldDescr)
signed = descr.fielddescr.is_field_signed()
if ofs.value > 0:
if ofs_loc.is_imm():
self.mc.ADD_ri(tmploc.value, tmploc.value, ofs_loc.value)
else:
self.mc.ADD_rr(tmploc.value, tmploc.value, ofs_loc.value)
ofs_loc = tmploc
self._load_from_mem(res_loc, base_loc, ofs_loc, imm(scale), signed, fcond)
return fcond
def _emit_copystrcontent(self, op, regalloc, fcond, is_unicode):
# compute the source address
args = op.getarglist()
base_loc = regalloc.rm.make_sure_var_in_reg(args[0], args)
ofs_loc = regalloc.rm.make_sure_var_in_reg(args[2], args)
assert args[0] is not args[1] # forbidden case of aliasing
srcaddr_box = TempBox()
forbidden_vars = [args[1], args[3], args[4], srcaddr_box]
srcaddr_loc = regalloc.rm.force_allocate_reg(srcaddr_box, forbidden_vars)
self._gen_address_inside_string(base_loc, ofs_loc, srcaddr_loc, is_unicode=is_unicode)
# compute the destination address
base_loc = regalloc.rm.make_sure_var_in_reg(args[1], forbidden_vars)
ofs_loc = regalloc.rm.make_sure_var_in_reg(args[3], forbidden_vars)
forbidden_vars = [args[4], srcaddr_box]
dstaddr_box = TempBox()
dstaddr_loc = regalloc.rm.force_allocate_reg(dstaddr_box, forbidden_vars)
self._gen_address_inside_string(base_loc, ofs_loc, dstaddr_loc, is_unicode=is_unicode)
# compute the length in bytes
length_box = args[4]
length_loc = regalloc.loc(length_box)
if is_unicode:
forbidden_vars = [srcaddr_box, dstaddr_box]
bytes_box = TempBox()
bytes_loc = regalloc.rm.force_allocate_reg(bytes_box, forbidden_vars)
scale = self._get_unicode_item_scale()
if not length_loc.is_core_reg():
self.regalloc_mov(length_loc, bytes_loc)
length_loc = bytes_loc
assert length_loc.is_core_reg()
self.mc.MOV_ri(r.ip.value, 1 << scale)
self.mc.MUL(bytes_loc.value, r.ip.value, length_loc.value)
length_box = bytes_box
length_loc = bytes_loc
# call memcpy()
regalloc.before_call()
self.simple_call_no_collect(imm(self.memcpy_addr), [dstaddr_loc, srcaddr_loc, length_loc])
regalloc.rm.possibly_free_var(length_box)
regalloc.rm.possibly_free_var(dstaddr_box)
regalloc.rm.possibly_free_var(srcaddr_box)
def test_mov_large_imm_loc_to_loc(self):
self.a.gen_func_prolog()
self.a.mov_loc_loc(imm(2478), r.r0)
self.a.gen_func_epilog()
assert run_asm(self.a) == 2478
def test_mov_imm_to_reg(self):
val = imm(123)
reg = r(7)
expected = [mi('gen_load_int', 7, 123, cond=AL)]
self.mov(val, reg, expected)
def test_push_imm(self):
i = imm(12)
e = [mi('gen_load_int', ip.value, 12, cond=AL),
mi('PUSH', [ip.value], cond=AL)]
self.push(i, e)
def prepare_op_int_signext(self, op, fcond):
argloc = self.make_sure_var_in_reg(op.getarg(0))
numbytes = op.getarg(1).getint()
resloc = self.force_allocate_reg(op)
return [argloc, imm(numbytes), resloc]
def test_mov_small_imm_loc_to_loc(self):
self.a.gen_func_prolog()
self.a.mov_loc_loc(imm(12), r.r0)
self.a.gen_func_epilog()
assert run_asm(self.a) == 12
def prepare_op_int_signext(self, op, fcond):
argloc = self.make_sure_var_in_reg(op.getarg(0))
numbytes = op.getarg(1).getint()
resloc = self.force_allocate_reg(op)
return [argloc, imm(numbytes), resloc]
def test_mov_large_imm_to_reg(self):
val = imm(65536)
reg = r(7)
expected = [mi('gen_load_int', 7, 65536, cond=AL)]
self.mov(val, reg, expected)
def test_push_imm(self):
i = imm(12)
e = [mi('gen_load_int', ip.value, 12, cond=AL),
mi('PUSH', [ip.value], cond=AL)]
self.push(i, e)
def test_mov_imm_to_reg(self):
val = imm(123)
reg = r(7)
expected = [mi('gen_load_int', 7, 123, cond=AL)]
self.mov(val, reg, expected)
def test_mov_large_imm_to_reg(self):
val = imm(65536)
reg = r(7)
expected = [mi('gen_load_int', 7, 65536, cond=AL)]
self.mov(val, reg, expected)