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-rwxr-xr-xbin/win32kprof.py90
1 files changed, 77 insertions, 13 deletions
diff --git a/bin/win32kprof.py b/bin/win32kprof.py
index 9e0873a5cec..836b17e2d29 100755
--- a/bin/win32kprof.py
+++ b/bin/win32kprof.py
@@ -7,8 +7,83 @@ import struct
__version__ = '0.1'
+
verbose = False
+
+class ParseError(Exception):
+ pass
+
+
+class MsvcDemangler:
+ # http://www.kegel.com/mangle.html
+
+ def __init__(self, symbol):
+ self._symbol = symbol
+ self._pos = 0
+
+ def lookahead(self):
+ return self._symbol[self._pos]
+
+ def consume(self):
+ ret = self.lookahead()
+ self._pos += 1
+ return ret
+
+ def match(self, c):
+ if self.lookahead() != c:
+ raise ParseError
+ self.consume()
+
+ def parse(self):
+ self.match('?')
+ name = self.parse_name()
+ qualifications = self.parse_qualifications()
+ return '::'.join(qualifications + [name])
+
+ def parse_name(self):
+ if self.lookahead() == '?':
+ return self.consume() + self.consume()
+ else:
+ name = self.parse_id()
+ self.match('@')
+ return name
+
+ def parse_qualifications(self):
+ qualifications = []
+ while self.lookahead() != '@':
+ name = self.parse_id()
+ qualifications.append(name)
+ self.match('@')
+ return qualifications
+
+ def parse_id(self):
+ s = ''
+ while True:
+ c = self.lookahead()
+ if c.isalnum() or c in '_':
+ s += c
+ self.consume()
+ else:
+ break
+ return s
+
+
+def demangle(name):
+ if name.startswith('_'):
+ name = name[1:]
+ idx = name.rfind('@')
+ if idx != -1 and name[idx+1:].isdigit():
+ name = name[:idx]
+ return name
+ if name.startswith('?'):
+ demangler = MsvcDemangler(name)
+ return demangler.parse()
+
+ return name
+ return name
+
+
class Profile:
def __init__(self):
@@ -19,15 +94,6 @@ class Profile:
self.last_stamp = 0
self.stamp_base = 0
- def demangle(self, name):
- if name.startswith('_'):
- name = name[1:]
- idx = name.rfind('@')
- if idx != -1 and name[idx+1:].isdigit():
- name = name[:idx]
- # TODO: Demangle C++ names
- return name
-
def unwrap_stamp(self, stamp):
if stamp < self.last_stamp:
self.stamp_base += 1 << 32
@@ -47,7 +113,7 @@ class Profile:
if type != 'f':
continue
addr = int(addr, 16)
- name = self.demangle(name)
+ name = demangle(name)
if last_addr == addr:
# TODO: handle collapsed functions
#assert last_name == name
@@ -197,9 +263,7 @@ def main():
profile.read_data(arg)
profile.write_report()
+
if __name__ == '__main__':
main()
-
-
-