def as_bitfield(self):
"""
Take Enum entry type and convert into a bitfield type:
uint64_t NameOfEnum : offset.num_bits;
"""
if self.instance is None:
return []
result = []
for enum in self.instance:
type_val = 64
bits = enum.origin.get('num_bits', -1)
if enum.parent is not None:
type_val = enum.parent.get('num_bits', type_val)
e_name = enum.name.split('genz_')[-1]
if int(bits) < 0:
logging.warning('Enum entry "%s" has invalid bitfield value?' %
e_name)
enum_entry = fields.CStructEntry(e_name,
num_type=type_val,
bitfield=bits)
if enum_entry not in result:
result.append(enum_entry)
return result
def struct_meta(self):
"""
A meta struct describing a <class> field.
"raw_name" - is a name of the class as it appears in the xml file.
"condensed_name" - is a trimmed class' name.
"value" - a 'condensed' indexed ('hardware_types' enum defined in __init__).
"""
entries = [
fields.CStructEntry('raw_name', var_type='const char * const'),
fields.CStructEntry('condensed_name', var_type='const char * const'),
fields.CStructEntry('value', var_type='const enum %s' % self.enum.name), #name of the enum
]
#FIXME: hardcoded index value!
struct_instance = fields.CStruct(self.struct_name,
entries=entries,
ignore_ctrl_struct_enum=True)
return struct_instance
def build_externs(cls, name, var_name=None):
# name = 'genz_ctrl_struct_type_to_ptrs'
if var_name is None:
var_name = cls.ctr_ptr_info_struct_name
array_type = 'extern struct %s' % var_name
return [
fields.CArrayEntry(name, array_type, is_allow_empty=False),
fields.CStructEntry('%s_nelems' % var_name,
var_type='extern size_t',
l_space='')
]
def build_struct_sizes(cls, structs: list):
""" """
result = []
for struct in structs:
v_type = 'ssize_t %s_size' % struct.name.lower()
field_name = '(struct %s *ci)' % cls.ctrl_info_name
entry = fields.CStructEntry(field_name,
var_type=v_type,
l_space='')
result.append(entry)
return result
def build_ctrl_ptr_info_struct(cls):
"""
struct genz_control_ptr_info {
struct genz_control_structure_ptr *ptr;
size_t num_ptrs;
ssize_t struct_bytes;
uint8_t vers;
char *name;
};
"""
struct = fields.CStruct(cls.ctr_ptr_info_struct_name)
entries = [
fields.CStructEntry('* const ptr',
var_type='const struct %s' %
cls.ctrl_ptr_struct_name),
fields.CStructEntry('num_ptrs', var_type='const size_t'),
fields.CStructEntry('struct_bytes', var_type='const ssize_t'),
fields.CStructEntry(
'chained',
var_type='const bool'), #structure contains chained ptr
fields.CStructEntry('vers', var_type='const uint8_t'),
fields.CStructEntry('name', var_type='const char * const'),
]
struct.extend(entries)
return struct
def build_ctrl_struct_ptr_struct(cls):
"""
struct genz_control_structure_ptr {
const enum genz_control_ptr_flags ptr_type;
const enum genz_pointer_size ptr_size;
const uint32_t pointer_offset;
const enum genz_control_structure_type struct_type;
const char *ptr_name;
ssize_t (*size_fn)(struct genz_control_info *ci);
};
"""
struct = fields.CStruct(cls.ctrl_ptr_struct_name)
entries = [
fields.CStructEntry('ptr_type',
var_type='const enum %s' %
cls.ctrl_ptr_flags_name),
fields.CStructEntry('ptr_size',
var_type='const enum %s' %
cls.ptr_size_enum_name),
fields.CStructEntry('pointer_offset', var_type='const uint32_t'),
fields.CStructEntry('struct_type',
var_type='const enum %s' %
cls.ctrl_struct_type_enum_name),
fields.CStructEntry('*ptr_name', var_type='const char'),
fields.CStructEntry('(*size_fn)(struct %s *ci)' %
cls.ctrl_info_name,
var_type='ssize_t'),
]
struct.extend(entries)
return struct
def build_export_symbol(self, name):
"""
EXPORT_SYMBOL(genz_struct_type_to_ptrs);
size_t genz_struct_type_to_ptrs_nelems =
sizeof(genz_struct_emtype_to_ptrs) /
sizeof(genz_struct_type_to_ptrs[0]);
EXPORT_SYMBOL(genz_struct_type_to_ptrs);
"""
export_symbol = 'EXPORT_SYMBOL(%s)'
value = 'sizeof({name}) / sizeof({name}[0])'.format(name=name)
return [
fields.CStructEntry(export_symbol % name, var_type='', l_space=''),
fields.EStateEntry('size_t %s_nelems' % name,
value,
l_space='',
close_bracket=';'),
fields.CStructEntry(export_symbol % (name + '_nelems'),
var_type='',
l_space=''),
]
def parse(self, root):
"""
Generate a struct array of "meta" structs describing a Class. Refere
to "struct_meta" property for documentation on the meta values.
@param root: xml root tree to start parsing from.
"""
if root is None:
return
if self._instance is None:
self._instance = fields.CArrayEntry(self.name, 'struct %s' % self.struct_name)
list_of_names = []
longest_name_length = self._get_longest_name_length(root)
for class_elem in root:
raw_name = get_name(class_elem)
trimmed_name = raw_name.lower().split('(')[0].strip()
name = trim_name(trimmed_name, replaceable=' —[:](),=.\n', removable='\'|!<>@#$%^&*+–’-/')
if 'switch' in name:
name = 'switch'
if 'bridge' in trimmed_name:
name = 'bridge'
if name not in list_of_names:
list_of_names.append(name)
enum_index = len(self.enum.entries)
estate = fields.EStateEntry('GENZ_%s' % name.upper(), enum_index)
spaces = ' ' * (longest_name_length - len(raw_name))
# { raw_name, condenced_name, condenced_enum_value }
name = '"%s", %s"%s", %s' % (raw_name, spaces, name, estate.name)
struct_entry = fields.CStructEntry(name, ignore_long_name_warning=True)
struct_entry.l_space = '%s { ' % struct_entry.l_space
struct_entry.str_close_symbol = ' },'
self._instance.append(struct_entry)
self.enum.append(estate)
last_state = fields.EStateEntry('GENZ_NUM_HARDWARE_TYPES', None)
self.enum.append(last_state)
return self.instance
def split_entry(self, entry: fields.CStructEntry, splitbit=64):
"""
When struct entry bits exceeding offset_bits, the entry needs to be
splitted in chunks.
@param: dict or CStructEntry object to be splitted.
"""
if entry.num_type == -1 or entry.bitfield == None or entry.bitfield == -1:
#this is not a bitfield entry, so skip it.
return entry
max_bit = entry.origin.get('max_bit', -1)
max_bit = int(max_bit)
min_bit = entry.origin.get('min_bit', -1)
min_bit = int(min_bit)
result = []
if not (min_bit < splitbit and max_bit >= splitbit):
return [entry]
split_bits = []
split_bits.append(splitbit - min_bit)
split_bits.append(entry.bitfield - split_bits[0])
for index in range(len(split_bits)):
bitfield = split_bits[index]
name = entry.fields.get('name')
entry_split = fields.CStructEntry(name=name,
num_type=entry.num_type,
bitfield=entry.bitfield)
entry_split.name = '%s_%s' % (entry_split.name, index + 1)
entry_split.definition = entry.definition
entry_split.bitfield = bitfield
entry_split.str_end = ' //NOTE: split bit'
result.append(entry_split)
return result
def _parse_structs(self, xml_structs):
for struct_elem in xml_structs:
struct_parser = parsers.StructBuilder(struct_elem)
if struct_parser.instance not in self.structs: #duplicates check
self.structs.append(struct_parser.instance)
union_builder = parsers.UnionBuilder(struct_elem)
if union_builder is not None and union_builder.instance is not None:
self.unions.extend(union_builder.instance)
enum_builder = parsers.EnumBuilder(struct_elem)
if enum_builder.instance is not None and len(
enum_builder.instance) > 0:
for enum in enum_builder.instance: #duplicates check
if enum not in self.enums:
self.enums.append(enum)
pointer_parser = parsers.PointerBuilder(struct_elem,
data_types=self.DataTypes)
if pointer_parser.instance is not None:
if pointer_parser.instance not in self.pointers:
pointer_parser.instance.origin = struct_parser.instance
if pointer_parser.instance not in self.pointers: #duplicates check
self.pointers.append(pointer_parser.instance)
struct_parser.instance.child_pointers.extend(
pointer_parser.instance.entries)
#Parsing a table is almost a recursive process. Each <table> or
#<array> entry has almost the same structure as <struct> entry.
table_parser = parsers.TableBuilder(struct_elem)
if table_parser.instance is not None:
for cgen in table_parser.instance:
for t_struct in cgen.structs:
table_entry_name = 'struct %s' % t_struct.name
struct_entry = fields.CStructEntry(
rm_prefix(cgen.structs[0].name, 'genz_') + '[]',
var_type=table_entry_name)
#Adding created Table entry to the current struct_parser
#entries list
if not struct_entry in struct_parser.instance.entries:
struct_parser.instance.append(struct_entry)
#loop through table's structs and only add those that are
#not already in the main structs list.
# These are the struct generated from <array> fields.
target = []
target.extend(cgen.structs)
for ms in target:
if ms not in self.struct_arrays:
self.struct_arrays.insert(0, ms)
struct_parser.instance.child_arrays.extend(
cgen.structs)
self._add_to_list(cgen.unions, self.unions)
self._add_to_list(cgen.enums, self.enums)
self._add_to_list(cgen.pointers, self.pointers)
self._add_to_list(cgen.struct_arrays,
self.struct_arrays,
is_push_front=True)
def entries(self):
result = []
result.append(self.DataTypes.table_index_define())
ctrl_ptr_flags = self.DataTypes.build_ptr_flags_enum()
ptr_sizes = self.DataTypes.build_ptr_sizes_enum()
ctrl_ptr_struct = self.DataTypes.build_ctrl_struct_ptr_struct()
ctrl_ptr_info_struct = self.DataTypes.build_ctrl_ptr_info_struct()
externs = self.DataTypes.build_externs(self.struct_type_to_ptrs_name)
# externs.extend(self.DataTypes.build_externs(self.table_type_to_ptrs_name))
externs.extend(self.externs)
externs.extend([
fields.CArrayEntry(self.table_type_to_ptrs_name,
'extern struct genz_control_ptr_info',
is_allow_empty=False),
fields.CStructEntry('genz_struct_type_to_ptrs_nelems',
var_type='extern size_t',
l_space=''),
fields.CStructEntry('genz_table_type_to_ptrs_nelems',
var_type='extern size_t',
l_space='')
])
result.append(ctrl_ptr_flags)
result.append(ptr_sizes)
result.append(ctrl_ptr_info_struct)
result.append(self.structs_enum)
result.append(ctrl_ptr_struct)
# Order of adding things Matters for C file to compile.
for union in self.unions:
result.append(union)
for enum in self.enums:
if len(enum.entries) > 1:
result.append(enum)
structs = []
# structs.append(
# fields.CStruct('genz_control_info', str_start='', open_bracket='', close_bracket=';')
# )
structs.extend(self.struct_arrays)
structs.extend(self.structs)
for struct in structs:
if len(struct.entries) == 1:
if '[]' in struct.entries[0].name:
continue
result.append(struct)
result.extend(externs)
result.extend(self.struct_enum_size_t)
#tentative declaration
result.insert(
0,
fields.CStruct('genz_control_info',
str_start='',
open_bracket='',
close_bracket=';'))
return result
def build_control_ptr_info_array(self):
"""
This is a list of all the <struct>.
Index by <struct> "type" number. There could be "gaps" in the type index -
so add "null" entry and move on.
Same thing should be created for <table>, except no need to have gaps.
Assign index as you go.
"""
array_type = self.DataTypes.ctr_ptr_info_struct_name
array_name = 'genz_struct_type_to_ptrs'
table_name = 'genz_table_type_to_ptrs'
struct_array = fields.CArrayEntry(array_name, 'struct %s' % array_type)
table_array = fields.CArrayEntry(table_name, 'struct %s' % array_type)
pointers_count = len(self.pointers)
#Need to know how big the pointers list is going to be, based of the
#struct's highest "type" attribute's value which indicates its position
#in the array that is built here.
hIndex_struct = self.find_highest_struct_index()
hIndex_tbl = self.find_highest_struct_index(tag='table')
for idx in range(hIndex_struct + 1):
struct = self.find_struct_by_index(idx)
if struct is None:
null_entry = fields.NullEntry(close_bracket=',')
else:
name_no_genz = rm_prefix(struct.name,
'genz_').split('_structure')[0]
offset = 'sizeof(struct {name})'.format(name=struct.name)
name = 'NULL, 0, {offset}, {chained}, {vers}, "{stype}"'.format(
offset=offset,
vers=struct.vers if struct.vers is not None else '0x0',
stype=name_no_genz,
chained='true' if struct.is_chained else 'false')
null_entry = fields.CStructEntry(name,
ignore_long_name_warning=True)
null_entry.l_space = '%s { ' % null_entry.l_space
null_entry.str_close_symbol = ' },'
struct_array.append(null_entry)
for idx in range(hIndex_tbl + 1):
table = self.find_struct_by_index(idx, tag='table')
name_no_genz = rm_prefix(table.name, 'genz_')
name = 'NULL, 0, 0, {chained}, 0x0, "{stype}"'.format(
stype=name_no_genz,
chained='true' if table.is_chained else 'false')
null_entry = fields.CStructEntry(name,
ignore_long_name_warning=True)
null_entry.l_space = '%s { ' % null_entry.l_space
null_entry.str_close_symbol = ' },'
table_array.append(null_entry)
struct_enum = self.structs_enum
for index in range(pointers_count):
ptr = self.pointers[index]
struct = ptr.origin
if struct.tag not in ['struct', 'table']:
continue
if struct.index is None:
msg = 'NOOOOOOO!! No "type" attr in struct -> %s' % struct.name
logging.critical(msg)
if not isinstance(struct, fields.cstruct.CStruct):
msg = 'Pointer "%s" origin is not of type CStruct!' % ptr.name
logging.critical(msg)
continue
if struct.origin is None:
logging.critical('Pointer "%s" struct "%s" origin is None?!' %\
(ptr.name, struct.name))
continue
name_no_ptr = ptr.name.split('_ptrs')[0]
name_no_genz = rm_prefix(name_no_ptr,
'genz_').split('_structure')[0]
ptr_size = 'sizeof({name})/sizeof({name}[0])'.format(name=ptr.name)
ptr_offset = 'sizeof(struct genz_{name})'.format(name=name_no_ptr)
name = '{ptype}, {size}, {offset}, {chained}, {vers}, "{stype}"'.format(
ptype=ptr.name,
size=ptr_size,
offset=ptr_offset,
vers=struct.vers if struct.vers is not None else '0x0',
stype=name_no_genz,
chained='true' if struct.is_chained else 'false')
struct_entry = fields.CStructEntry(name,
ignore_long_name_warning=True)
struct_entry.l_space = '%s { ' % struct_entry.l_space
struct_entry.str_close_symbol = ' },'
if struct.tag == 'struct':
struct_array.entries[int(struct.index, 0)] = struct_entry
elif struct.tag == 'table':
enum = self.find_enum_value_by_name(struct.name.upper(),
struct_enum)
enum_val = enum.value.split('+')[-1].strip()
if enum_val.isdigit(): enum_val = int(enum_val, 0)
else: enum_val = 0
table_array.entries[enum_val] = struct_entry
return struct_array, table_array
def create_entry(self, field, bits):
"""
@param field: the xml field to create a struct entry from.
@param bits: the 'num_bits' attr of the <offset> field (e.g. parent of field).
"""
if field is None:
logging.error('Failed parsing field (is None)! Root: %s' %
self.root)
return
s_entry = None
name = get_name(field)
field_name = trim_name(name)
# If a field has <value> entries - it is an Enum, not a struct entry.
if (len(field.findall('value')) > 0):
logging.info('A "%s" field is an Enum...' % field_name)
if (len(field.findall('subfield')) > 0):
msg = 'Both <value> and <subfield> in the "%s" field!'
msg += ' What is it? Struct entry or Enum?'
logging.error(msg % (field_name))
return
props = field.attrib
is_no_name = False
if name is None:
name = str(field.attrib)
is_no_name = True
if props.get('offset_bits', None) is None:
props['offset_bits'] = bits
var_type = None
bitfield = props['num_bits']
if 'uuid' in field_name and not field_name.endswith('ptr'):
base_bit = props.get('base_bit', None)
if base_bit is not None: # ignore second half of split uuid
return
field_name = uuid_re.sub('', field_name)
var_type = 'uuid_t'
bitfield = -1
s_entry = fields.CStructEntry(name=field_name,
num_type=props['offset_bits'],
bitfield=bitfield,
var_type=var_type)
s_entry.origin = field
s_entry.parent = self.root
if is_no_name:
s_entry.str_start = '//'
s_entry.str_end = ' //FIXME: entry had no name'
#FIXME: we are ignoring ... entries for now, but will be fixed later
if s_entry.name == '...':
s_entry.str_start = '//'
s_entry.str_end = ' //FIXME: name "..." entry'
#FIXME: write this to a file, but comment it out to know which entries
# we can't parse.
if s_entry.bitfield == 0 or s_entry.num_type == 0:
s_entry.str_start = '//'
s_entry.str_end = ' //FIXME: 0 bits.'
return s_entry
if name.lower() == 'unknown':
s_entry.str_start = '//'
s_entry.str_end = ' //FIXME: UNKNOWN in name'
if 'rsvd' in name.lower():
s_entry.str_start = '//'
s_entry.str_end = ' //FIXME: skipping rsvd(X) fields for now'
s_entry = self.split_entry(s_entry)
return s_entry
