def do_test(self, callback):
from pypy.jit.backend.x86.regalloc import X86FrameManager
from pypy.jit.backend.x86.regalloc import X86XMMRegisterManager
class FakeToken:
class compiled_loop_token:
asmmemmgr_blocks = None
cpu = ACTUAL_CPU(None, None)
cpu.setup()
looptoken = FakeToken()
asm = cpu.assembler
asm.setup_once()
asm.setup(looptoken)
self.fm = X86FrameManager()
self.xrm = X86XMMRegisterManager(None,
frame_manager=self.fm,
assembler=asm)
callback(asm)
asm.mc.RET()
rawstart = asm.materialize_loop(looptoken)
#
F = ctypes.CFUNCTYPE(ctypes.c_long)
fn = ctypes.cast(rawstart, F)
res = fn()
return res
def test_mark_gc_roots(self):
cpu = CPU(None, None)
cpu.setup_once()
regalloc = RegAlloc(MockAssembler(cpu, MockGcDescr(False)))
regalloc.assembler.datablockwrapper = 'fakedatablockwrapper'
boxes = [BoxPtr() for i in range(len(X86RegisterManager.all_regs))]
longevity = {}
for box in boxes:
longevity[box] = (0, 1)
regalloc.fm = X86FrameManager()
regalloc.rm = X86RegisterManager(longevity,
regalloc.fm,
assembler=regalloc.assembler)
regalloc.xrm = X86XMMRegisterManager(longevity,
regalloc.fm,
assembler=regalloc.assembler)
cpu = regalloc.assembler.cpu
for box in boxes:
regalloc.rm.try_allocate_reg(box)
TP = lltype.FuncType([], lltype.Signed)
calldescr = cpu.calldescrof(TP, TP.ARGS, TP.RESULT,
EffectInfo.MOST_GENERAL)
regalloc.rm._check_invariants()
box = boxes[0]
regalloc.position = 0
regalloc.consider_call(
ResOperation(rop.CALL, [box], BoxInt(), calldescr))
assert len(regalloc.assembler.movs) == 3
#
mark = regalloc.get_mark_gc_roots(cpu.gc_ll_descr.gcrootmap)
assert mark[0] == 'compressed'
base = -WORD * FRAME_FIXED_SIZE
expected = ['ebx', 'esi', 'edi', base, base - WORD, base - WORD * 2]
assert dict.fromkeys(mark[1:]) == dict.fromkeys(expected)