Demangle C++ symbols.
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63ddae0990
commit
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@ -7,8 +7,83 @@ import struct
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__version__ = '0.1'
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verbose = False
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class ParseError(Exception):
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pass
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class MsvcDemangler:
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# http://www.kegel.com/mangle.html
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def __init__(self, symbol):
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self._symbol = symbol
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self._pos = 0
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def lookahead(self):
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return self._symbol[self._pos]
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def consume(self):
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ret = self.lookahead()
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self._pos += 1
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return ret
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def match(self, c):
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if self.lookahead() != c:
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raise ParseError
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self.consume()
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def parse(self):
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self.match('?')
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name = self.parse_name()
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qualifications = self.parse_qualifications()
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return '::'.join(qualifications + [name])
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def parse_name(self):
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if self.lookahead() == '?':
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return self.consume() + self.consume()
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else:
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name = self.parse_id()
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self.match('@')
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return name
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def parse_qualifications(self):
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qualifications = []
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while self.lookahead() != '@':
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name = self.parse_id()
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qualifications.append(name)
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self.match('@')
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return qualifications
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def parse_id(self):
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s = ''
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while True:
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c = self.lookahead()
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if c.isalnum() or c in '_':
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s += c
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self.consume()
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else:
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break
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return s
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def demangle(name):
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if name.startswith('_'):
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name = name[1:]
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idx = name.rfind('@')
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if idx != -1 and name[idx+1:].isdigit():
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name = name[:idx]
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return name
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if name.startswith('?'):
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demangler = MsvcDemangler(name)
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return demangler.parse()
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return name
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return name
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class Profile:
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def __init__(self):
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@ -19,15 +94,6 @@ class Profile:
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self.last_stamp = 0
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self.stamp_base = 0
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def demangle(self, name):
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if name.startswith('_'):
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name = name[1:]
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idx = name.rfind('@')
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if idx != -1 and name[idx+1:].isdigit():
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name = name[:idx]
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# TODO: Demangle C++ names
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return name
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def unwrap_stamp(self, stamp):
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if stamp < self.last_stamp:
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self.stamp_base += 1 << 32
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@ -47,7 +113,7 @@ class Profile:
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if type != 'f':
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continue
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addr = int(addr, 16)
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name = self.demangle(name)
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name = demangle(name)
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if last_addr == addr:
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# TODO: handle collapsed functions
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#assert last_name == name
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@ -197,9 +263,7 @@ def main():
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profile.read_data(arg)
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profile.write_report()
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if __name__ == '__main__':
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main()
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