def GetBaseTypes(module, type_name):
t = FindGdbType(module, type_name)
if t is None:
# Type is a base type?
return [JsDbgTypes.SBaseTypeResult(module, type_name, 0)]
return GetBaseTypesFromGdbType(module, t)
def GetModuleForName(module):
objfile = FindObjfileForName(module)
if objfile:
# Python has no API to find the base address
# https://sourceware.org/bugzilla/show_bug.cgi?id=24481
return JsDbgTypes.SModule(module, 0)
return None
def GetBaseTypesFromGdbType(module, type, extra_bitoffset=0):
try:
fields = type.fields()
except:
# Type does not have fields (not a struct/class/union)
return [JsDbgTypes.SBaseTypeResult(module, type.name, 0)]
resultFields = []
for field in fields:
if not field.is_base_class:
continue
resultFields.append(JsDbgTypes.SBaseTypeResult(
module, field.type.name, (extra_bitoffset + field.bitpos) / 8))
resultFields.extend(GetBaseTypesFromGdbType(
module, field.type, extra_bitoffset + field.bitpos))
return resultFields
def LookupSymbolName(pointer):
module = ModuleForAddress(pointer)
val = gdb.parse_and_eval("(void*)%d" % pointer)
# Result looks like: '0x4004f1 <twiddle<int []>(int)+17>'
# If not found, just looks like '0x4004f1'
symbol_and_offset = re.search('<(.+)>$', str(val))
if symbol_and_offset is None:
return None
groups = re.match("^(.*?)(\\+([0-9]+))?$", symbol_and_offset.groups()[0]).groups()
symbol = groups[0]
offset = 0
if groups[2]:
offset = int(groups[2])
return JsDbgTypes.SSymbolNameAndDisplacement(module, symbol, offset)
def LookupConstants(module, type, value):
type = FindGdbType(module, type)
if type is None:
return None
if type.code != gdb.TYPE_CODE_ENUM:
return None
values = []
for f in type.fields():
if f.enumval != value:
continue
# GDB will give us "EnumType::Value", but we just want to return the
# "Value" part.
name = f.name
name = name[name.rfind("::") + 2:]
values.append(JsDbgTypes.SConstantResult(name, f.enumval))
return values