def __init__(self, gdbval):
WrappedPointer.__init__(self, gdbval)
# Cache some values:
# This is the high-water mark: at this point and beyond, the bytes of
# memory are untouched since malloc:
self.pool_address = self.field('pool_address')
def __init__(self, gdbval):
WrappedPointer.__init__(self, gdbval)
# Cache some values:
# This is the high-water mark: at this point and beyond, the bytes of
# memory are untouched since malloc:
self.pool_address = self.field('pool_address')
def __init__(self, gdbval, arenaobj):
WrappedPointer.__init__(self, gdbval)
assert (isinstance(arenaobj, ArenaObject))
self.arenaobj = arenaobj
# obmalloc.c sets up arenaobj->pool_address to the first pool
# address, aligning it to POOL_SIZE_MASK:
self.initial_pool_addr = self.as_address()
self.num_pools = ARENA_SIZE // POOL_SIZE
self.excess = self.initial_pool_addr & POOL_SIZE_MASK
if self.excess != 0:
self.num_pools -= 1
self.initial_pool_addr += POOL_SIZE - self.excess
def __init__(self, gdbval, arenaobj):
WrappedPointer.__init__(self, gdbval)
assert(isinstance(arenaobj, ArenaObject))
self.arenaobj = arenaobj
# obmalloc.c sets up arenaobj->pool_address to the first pool
# address, aligning it to POOL_SIZE_MASK:
self.initial_pool_addr = self.as_address()
self.num_pools = ARENA_SIZE / POOL_SIZE
self.excess = self.initial_pool_addr & POOL_SIZE_MASK
if self.excess != 0:
self.num_pools -= 1
self.initial_pool_addr += POOL_SIZE - self.excess
def categorize_refs(self, usage_set, level=0, detail=None):
# This gives us access to the freetype library:
FT_Library = WrappedPointer(self._gdbval['library'])
# This is actually a "struct FT_LibraryRec_", in FreeType's
# include/freetype/internal/ftobjs.h
# print FT_Library._gdbval.dereference()
usage_set.set_addr_category(FT_Library.as_address(),
Category('FreeType', 'Library', ''),
level=level+1, debug=True)
usage_set.set_addr_category(int(FT_Library.field('raster_pool')),
Category('FreeType', 'raster_pool', ''),
level=level+2, debug=True)
class GTypeInstancePtr(WrappedPointer):
@classmethod
def from_gtypeinstance_ptr(cls, addr, typenode):
typename = cls.get_type_name(typenode)
if typename:
cls = cls.get_class_for_typename(typename)
return cls(addr, typenode, typename)
@classmethod
def get_class_for_typename(cls, typename):
'''Get the GTypeInstance subclass for the given type name'''
if typename in typemap:
return typemap[typename]
return GTypeInstancePtr
def __init__(self, addr, typenode, typename):
# Try to cast the ptr to the named type:
addr = gdb.Value(addr)
try:
if is_typename_castable(typename):
# This requires, say, gtk2-debuginfo:
ptr_type = caching_lookup_type(typename).pointer()
addr = addr.cast(ptr_type)
#print typename, addr.dereference()
#if typename == 'GdkPixbuf':
# print 'GOT PIXELS', addr['pixels']
except RuntimeError, e:
pass
#print addr, e
WrappedPointer.__init__(self, addr)
self.typenode = typenode
self.typename = typename
"""
def categorize_refs(self, usage_set, level=0, detail=None):
# This gives us access to the freetype library:
FT_Library = WrappedPointer(self._gdbval['library'])
# This is actually a "struct FT_LibraryRec_", in FreeType's
# include/freetype/internal/ftobjs.h
# print FT_Library._gdbval.dereference()
usage_set.set_addr_category(FT_Library.as_address(),
Category('FreeType', 'Library', ''),
level=level + 1,
debug=True)
usage_set.set_addr_category(int(FT_Library.field('raster_pool')),
Category('FreeType', 'raster_pool', ''),
level=level + 2,
debug=True)
def __init__(self, addr, typenode, typename):
# Try to cast the ptr to the named type:
addr = gdb.Value(addr)
try:
if is_typename_castable(typename):
# This requires, say, gtk2-debuginfo:
ptr_type = caching_lookup_type(typename).pointer()
addr = addr.cast(ptr_type)
#print typename, addr.dereference()
#if typename == 'GdkPixbuf':
# print 'GOT PIXELS', addr['pixels']
except RuntimeError as e:
pass
#print addr, e
WrappedPointer.__init__(self, addr)
self.typenode = typenode
self.typename = typename
"""
def __init__(self, addr, typenode, typename):
# Try to cast the ptr to the named type:
addr = gdb.Value(addr)
try:
if is_typename_castable(typename):
# This requires, say, gtk2-debuginfo:
ptr_type = caching_lookup_type(typename).pointer()
addr = addr.cast(ptr_type)
#print typename, addr.dereference()
#if typename == 'GdkPixbuf':
# print 'GOT PIXELS', addr['pixels']
except RuntimeError as e:
pass
#print addr, e
WrappedPointer.__init__(self, addr)
self.typenode = typenode
self.typename = typename
"""
def categorize_refs(self, usage_set, level=0, detail=None):
priv_type = caching_lookup_type('GdkImagePrivateX11').pointer()
priv_data = WrappedPointer(self._gdbval['windowing_data'].cast(priv_type))
usage_set.set_addr_category(priv_data.as_address(),
Category('GType', 'GdkImagePrivateX11', ''),
level=level+1, debug=True)
ximage = WrappedPointer(priv_data.field('ximage'))
dims = '%sw x %sh x %sbpp' % (ximage.field('width'),
ximage.field('height'),
ximage.field('depth'))
usage_set.set_addr_category(ximage.as_address(),
Category('X11', 'Image', dims),
level=level+2, debug=True)
usage_set.set_addr_category(int(ximage.field('data')),
Category('X11', 'Image data', dims),
level=level+2, debug=True)
def categorize_refs(self, usage_set, level=0, detail=None):
priv_type = caching_lookup_type('GdkImagePrivateX11').pointer()
priv_data = WrappedPointer(
self._gdbval['windowing_data'].cast(priv_type))
usage_set.set_addr_category(priv_data.as_address(),
Category('GType', 'GdkImagePrivateX11',
''),
level=level + 1,
debug=True)
ximage = WrappedPointer(priv_data.field('ximage'))
dims = '%sw x %sh x %sbpp' % (ximage.field('width'),
ximage.field('height'),
ximage.field('depth'))
usage_set.set_addr_category(ximage.as_address(),
Category('X11', 'Image', dims),
level=level + 2,
debug=True)
usage_set.set_addr_category(int(ximage.field('data')),
Category('X11', 'Image data', dims),
level=level + 2,
debug=True)
def invoke(self, args, from_tty):
from heap.glibc import iter_mappings,lookup_symbol
from heap import WrappedPointer,caching_lookup_type
SIZE_SZ = caching_lookup_type('size_t').sizeof
type_size_t = gdb.lookup_type('size_t')
type_size_t_ptr = type_size_t.pointer()
arg_list = gdb.string_to_argv(args)
parser = argparse.ArgumentParser(add_help=True, usage="objdump [-v][-s SIZE] <ADDR>")
parser.add_argument('addr', metavar='ADDR', type=str, nargs=1, help="Target address")
parser.add_argument('-s', dest='size', default=None, help='Total dump size')
parser.add_argument('-v', dest='verbose', action="store_true", default=False, help='Verbose')
try:
args_dict = parser.parse_args(args=arg_list)
except:
return
addr_arg = args_dict.addr[0]
if addr_arg.startswith('0x'):
addr = int(addr_arg, 16)
else:
addr = int(addr_arg)
if args_dict.size:
if args_dict.size.startswith('0x'):
total_size = int(args_dict.size, 16)
else:
total_size = int(args_dict.size)
else:
total_size = 10 * SIZE_SZ
if args_dict.verbose:
print('Searching in the following object ranges')
print('-------------------------------------------------')
text = [] #list of tuples (start, end, pathname, ...) of a valid memory map
#XXX why pid would be 0?
for pid in [ o.pid for o in gdb.inferiors() if o.pid !=0 ]:
for r in iter_mappings(pid):
if args_dict.verbose: print("%s - %s : %s" % (hex(r[0]), hex(r[1]), r[2]))
text.append((r[0], r[1], r[2]))
print('\nDumping Object at address %s' % fmt_addr(addr))
print('-------------------------------------------------')
for a in range(addr, addr + (total_size * SIZE_SZ), SIZE_SZ):
ptr = WrappedPointer(gdb.Value(a).cast(type_size_t_ptr))
#dereference first, at the first access denied bail out, dont go further
try:
val = ptr.dereference()
found = False
val_int = int(str(val.cast(type_size_t))) #XXX Error occurred in Python command: invalid literal for int() with base 10: '0x418'
pathname = ""
for t in text:
if val_int >= t[0] and val_int < t[1]:
found = True
pathname = t[2]
if found:
sym = lookup_symbol(val_int)
if sym:
out_line = "%s => %s (%s in %s)" % (fmt_addr(ptr.as_address()), fmt_addr(val_int), sym, pathname )
else:
out_line = "%s => %s (%s)" % (fmt_addr(ptr.as_address()), fmt_addr(val_int), pathname )
else:
out_line = "%s => %s" % (fmt_addr(ptr.as_address()), fmt_addr(val_int) )
#if it's not a symbol, try a string
# try just a few chars
#if not found:
print(out_line)
except gdb.MemoryError:
print("Error accessing memory at %s" % fmt_addr(ptr.as_address()))
return
