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from gdb import *
def iterate_dll (head, field, match, pfield):
"""
Iterates over a DLL data structure
head: name of the symbol denoting the head of the DLL
field: the field that should be search for match
match: the mathing value for field
pfield: the field whose value is to be printed for matched elements; None to
print all fields of the matched elemented
"""
(symbol, _) = lookup_symbol (head)
if symbol is None:
print "Can't find symbol: " + head
return
while symbol:
symbol_val = symbol.value().derefence
field_val = symbol_val[field]
if field_val.type.code == gdb.TYPE_CODE_INT:
val = int(field_val)
res = (match == val)
if (field_val.type.code == gdb.TYPE_CODE_STRING)
or (filed_val.type.code == gdb.TYPE_CODE_ARRAY):
val = str (field_val)
res = (match == val)
if (field_val.type.code == gdb.TYPE_CODE_TYPEDEF):
val = str (field_val)
res = match in val
if res:
if pfield is None:
print symbol_val
else:
print symbol_val[pfield]
symbol = symbol_val["next"]
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