def wrap_struct(syscall_name, i, ctype, param_ctypes):
global STRUCT_WRAPPERS
global ARRAY_CTYPES
ctype_printed = pretty_print_type(ctype)
if make_struct_wrapper(ctype, ctype_printed):
array_key = (syscall_name, ctype.name)
if array_key in ARRAY_CTYPES:
j = ARRAY_CTYPES[array_key] + i
return wrap_array_of_struct(ctype_printed,
pretty_print_type(param_ctypes[j]), i, j)
else:
return "WRAP_SYSCALL_ARG_PSTRUCT(%d, %s)" % (i,ctype_printed)
else:
return wrap_pointer(i)
def wrap_struct(syscall_name, i, ctype, param_ctypes):
global STRUCT_WRAPPERS
global ARRAY_CTYPES
ctype_printed = pretty_print_type(ctype)
if make_struct_wrapper(ctype, ctype_printed):
array_key = (syscall_name, ctype.name)
if array_key in ARRAY_CTYPES:
j = ARRAY_CTYPES[array_key] + i
return wrap_array_of_struct(ctype_printed,
pretty_print_type(param_ctypes[j]), i,
j)
else:
return "WRAP_SYSCALL_ARG_PSTRUCT(%d, %s)" % (i, ctype_printed)
else:
return wrap_pointer(i)
def make_struct_wrapper(ctype, ctype_printed):
global STRUCT_WRAPPERS
global ARRAY_CTYPES
if ctype in STRUCT_WRAPPERS:
return STRUCT_WRAPPERS[ctype]
actions = []
for (field_ctype, field_name) in ctype.fields():
field_ctype = field_ctype.base_type()
if isinstance(field_ctype, CTypePointer) \
and not is_function_pointer(field_ctype):
# Establish a base case, just in case we get `A.x -> ... -> A` and loop
# infinitely when trying to generate a struct wrapper for `A`.
STRUCT_WRAPPERS[ctype] = True
# Try to see if we explicitly recognize this structure field as being
# a pointer to an array of structures, where the size of the array is
# defined by another field in `ctype`.
array_key = (ctype_printed, field_name)
if array_key in ARRAY_CTYPES:
len_field = ARRAY_CTYPES[array_key]
field_ptype = field_ctype.ctype.base_type()
is_struct = make_struct_wrapper(field_ptype,
pretty_print_type(field_ptype))
assert is_struct
actions.append("WRAP_STRUCT_ASTRUCT(%s,%s)" %
(field_name, len_field))
# Just a regular pointer field.
else:
actions.append("WRAP_STRUCT_PFIELD(%s)" % field_name)
if actions:
print "WRAP_STRUCT(%s,%s)" % (ctype_printed, ";".join(actions))
return True
else:
STRUCT_WRAPPERS[ctype] = False
return False
def make_struct_wrapper(ctype, ctype_printed):
global STRUCT_WRAPPERS
global ARRAY_CTYPES
if ctype in STRUCT_WRAPPERS:
return STRUCT_WRAPPERS[ctype]
actions = []
for (field_ctype, field_name) in ctype.fields():
field_ctype = field_ctype.base_type()
if isinstance(field_ctype, CTypePointer) \
and not is_function_pointer(field_ctype):
# Establish a base case, just in case we get `A.x -> ... -> A` and loop
# infinitely when trying to generate a struct wrapper for `A`.
STRUCT_WRAPPERS[ctype] = True
# Try to see if we explicitly recognize this structure field as being
# a pointer to an array of structures, where the size of the array is
# defined by another field in `ctype`.
array_key = (ctype_printed, field_name)
if array_key in ARRAY_CTYPES:
len_field = ARRAY_CTYPES[array_key]
field_ptype = field_ctype.ctype.base_type()
is_struct = make_struct_wrapper(field_ptype,
pretty_print_type(field_ptype))
assert is_struct
actions.append("WRAP_STRUCT_ASTRUCT(%s,%s)" % (field_name,len_field))
# Just a regular pointer field.
else:
actions.append("WRAP_STRUCT_PFIELD(%s)" % field_name)
if actions:
print "WRAP_STRUCT(%s,%s)" % (ctype_printed, ";".join(actions))
return True
else:
STRUCT_WRAPPERS[ctype] = False
return False
