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import py
from rpython.jit.metainterp.test import test_fficall
from rpython.jit.backend.x86.test.test_basic import Jit386Mixin
class TestFfiCall(Jit386Mixin, test_fficall.FfiCallTests):
# for the individual tests see
# ====> ../../../metainterp/test/test_fficall.py
def _add_libffi_types_to_ll2types_maybe(self):
# this is needed by test_guard_not_forced_fails, because it produces a
# loop which reads the value of types.* in a variable, then a guard
# fail and we switch to blackhole: the problem is that at this point
# the blackhole interp has a real integer, but it needs to convert it
# back to a lltype pointer (which is handled by ll2ctypes, deeply in
# the logic). The workaround is to teach ll2ctypes in advance which
# are the addresses of the various types.* structures.
# Try to comment this code out and run the test to see how it fails :)
from rpython.rtyper.lltypesystem import rffi, lltype, ll2ctypes
from rpython.rlib.jit_libffi import types
for key, value in types.__dict__.iteritems():
if isinstance(value, lltype._ptr):
addr = rffi.cast(lltype.Signed, value)
ll2ctypes._int2obj[addr] = value
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