def _populate_enums():
module = sys.modules[__name__]
ctx = libirpy.newctx()
import hv6py.kernel.impl as hv6
hv6._init_metadata(ctx)
for k, v in ctx.metadata.items():
if isinstance(v, tuple) and v[0] == 'DICompositeType':
if v[1].get('tag') == 'DW_TAG_enumeration_type':
name = v[1].get('name')
size = v[1].get('size')
elements = v[1].get('elements')
if name is None or size is None or elements is None:
continue
setattr(module, name + '_t', z3.BitVecSort(size))
enum = {}
for element in ctx.metadata.get(elements):
element = ctx.metadata.get(element)
assert element[0] == 'DIEnumerator'
element_name = element[1].get('name')
element_value = element[1].get('value')
enum[element_name] = z3.BitVecVal(element_value, size)
setattr(module, name, type(name, (), enum))
def execute(name, real_params, *args):
module = __import__(name) # import name, a py file
params = []
for i in args:
if isinstance(i, tuple):
i = i[0]
params.append(libirpy.util.FreshBitVec('param', i))
def nop(*args, **kwargs):
pass
ctx = libirpy.newctx()
libirpy.initctx(ctx, module)
ctx['globals']['@llvm_lifetime_start'] = nop
ctx['globals']['@llvm_lifetime_end'] = nop
ctx['globals']['@llvm_lifetime_start_p0i8'] = nop
ctx['globals']['@llvm_lifetime_end_p0i8'] = nop
expr = ctx.call("@test", *params)
subst = []
for v, sym in zip(real_params, params):
subst.append((sym, v)) # real params and symbolic params
res = z3.simplify(z3.substitute(
expr, subst)) # substitution, z3.simplify remove symbolic symbols;
# since all symbols are substituted; it simplifies to output
return res
def newctx():
ctx = libirpy.newctx()
# If we don't need the values of any constants we don't have to
# initialize them, slightly faster execution time.
ctx.eval.declare_global_constant = ctx.eval.declare_global_variable
libirpy.initctx(ctx, counter)
return ctx
def newctx():
ctx = libirpy.newctx()
# If we don't need the values of any constants we don't have to
# initialize them, slightly faster execution time.
ctx.eval.declare_global_constant = ctx.eval.declare_global_variable
libirpy.initctx(ctx, hv6)
ctx.globals['#tlbinv'] = util.FreshFunction('tlbinv', dt.pid_t, dt.bool_t)
ctx.globals['#iotlbinv'] = util.FreshBool('iotlbinv')
ctx.globals['@panic'] = panic
ctx.globals['@bzero'] = bzero
ctx.globals['@memset'] = memset
ctx.globals['@memcpy'] = memcpy
ctx.globals['@putchar'] = putchar
ctx.globals['@hvm_set_cr3'] = hvm_set_cr3
ctx.globals['@hvm_copy'] = hvm_copy
ctx.globals['@hvm_flush'] = hvm_flush
ctx.globals['@hvm_set_timer'] = hvm_set_timer
ctx.globals['@hvm_set_io_bitmap'] = hvm_set_io_bitmap
ctx.globals['@hvm_invalidate_tlb'] = hvm_invalidate_tlb
ctx.globals['@hvm_switch'] = hvm_switch
ctx.globals['@pdb'] = pdb
ctx.globals['@syslog'] = syslog
### after
ctx.globals['@libs_cprintf'] = libs_cprintf
# iommu fns
ctx.globals['@iommu_set_dev_root'] = iommu_set_dev_root
ctx.globals['@iommu_get_dev_root'] = iommu_get_dev_root
ctx.globals['@iommu_set_intremap'] = iommu_set_intremap
ctx.globals['@iommu_reset_intremap'] = iommu_reset_intremap
ctx.globals['@iommu_reset_dev_root'] = iommu_reset_dev_root
ctx.globals['@iommu_flush'] = iommu_flush
ctx.globals['@iommu_hack_root'] = iommu_hack_root
ctx.globals['@iommu_entry'] = iommu_entry
ctx.globals['@ms_to_cycles'] = ms_to_cycles
# Provide the "integer value" of some globals
ctx.ptr_to_int[ctx.globals['@pages']._ref._name] = util.FreshBitVec(
'(uintptr)@pages', 64)
ctx.ptr_to_int[ctx.globals['@proc_table']._ref._name] = util.FreshBitVec(
'(uintptr)@proc_table', 64)
ctx.ptr_to_int[
ctx.globals['@page_desc_table']._ref._name] = util.FreshBitVec(
'(uintptr)@page_desc_table', 64)
ctx.ptr_to_int[ctx.globals['@file_table']._ref._name] = util.FreshBitVec(
'(uintptr)@file_table', 64)
ctx.ptr_to_int[ctx.globals['@devices']._ref._name] = util.FreshBitVec(
'(uintptr)@devices', 64)
ctx.ptr_to_int[ctx.globals['@devices']._ref._name] = util.FreshBitVec(
'(uintptr)@devices', 64)
ctx.ptr_to_int[ctx.globals['@dmapages']._ref._name] = util.FreshBitVec(
'(uintptr)@dmapages', 64)
return ctx
def newctx():
ctx = libirpy.newctx()
# If we don't need the values of any constants we don't have to
# initialize them, slightly faster execution time.
ctx.eval.declare_global_constant = ctx.eval.declare_global_variable
libirpy.initctx(ctx, impl)
ctx.globals['@panic'] = panic
ctx.globals['@bzero'] = bzero
ctx.globals['@memset'] = memset
ctx.globals['@memcpy'] = memcpy
ctx.globals['@putchar'] = putchar
ctx.globals['@pdb'] = pdb
ctx.globals['@syslog'] = syslog
ctx.globals['@ms_to_cycles'] = ms_to_cycles
return ctx
def _irpy(self, name, *args):
module = __import__(name)
params = []
for i in args:
if isinstance(i, tuple):
i = i[0]
params.append(libirpy.util.FreshBitVec('param', i))
def nop(*args, **kwargs):
pass
ctx = libirpy.newctx()
libirpy.initctx(ctx, module)
ctx['globals']['@llvm_lifetime_start'] = nop
ctx['globals']['@llvm_lifetime_end'] = nop
ctx['globals']['@llvm_lifetime_start_p0i8'] = nop
ctx['globals']['@llvm_lifetime_end_p0i8'] = nop
expr = ctx.call("@test", *params)
return expr, params