src/system/libroot/stubbed/generate_stubs.py

   1 #! /usr/bin/env python
   2
   3 import sys;
   4
   5 dataSymbolsByAddress = {}
   6 dataSymbols = []
   7 versionedDataSymbolsByName = {}
   8 functionSymbolsByAddress = {}
   9 functionSymbols = []
  10 versionedFunctionSymbolsByName = {}
  11
  12 for line in sys.stdin.readlines():
  13         if line[0] != '0':
  14                 # ignore lines without an address
  15                 continue
  16
  17         (address, type, symbol) = line.split()
  18
  19         # select interesting types of symbols
  20         if type not in 'BCDGRSTuVvWw':
  21                 continue
  22
  23         # drop symbols from legacy compiler that contain a dot (those produce
  24         # syntax errors)
  25         if '.' in symbol:
  26                 continue
  27
  28         if type in 'BD':
  29                 if '@' in symbol:
  30                         versionedDataSymbolsByName[symbol] = address
  31                 else:
  32                         if type not in 'VW':
  33                                 dataSymbolsByAddress[address] = symbol
  34                         dataSymbols.append(symbol)
  35         else:
  36                 if '@' in symbol:
  37                         versionedFunctionSymbolsByName[symbol] = address
  38                 else:
  39                         if type not in 'VW':
  40                                 functionSymbolsByAddress[address] = symbol
  41                         functionSymbols.append(symbol)
  42
  43 # add data symbols
  44 for dataSymbol in sorted(dataSymbols):
  45         print 'int %s;' % dataSymbol
  46
  47 print
  48
  49 # add function symbols
  50 for functionSymbol in sorted(functionSymbols):
  51         print 'void %s() {}' % functionSymbol
  52
  53 print
  54 print "#include <symbol_versioning.h>"
  55 print
  56
  57 # add symbol versioning information for data symbols
  58 for symbol in sorted(versionedDataSymbolsByName.keys()):
  59         address = versionedDataSymbolsByName[symbol]
  60         targetSymbol = dataSymbolsByAddress[address]
  61         (symbolName, unused, versionTag) = symbol.partition('LIBROOT_')
  62         print 'DEFINE_LIBROOT_KERNEL_SYMBOL_VERSION("%s", "%s", "%s");' \
  63                 % (targetSymbol, symbolName, versionTag)
  64
  65 # add symbol versioning information for function symbols
  66 for symbol in sorted(versionedFunctionSymbolsByName.keys()):
  67         address = versionedFunctionSymbolsByName[symbol]
  68         targetSymbol = functionSymbolsByAddress[address]
  69         (symbolName, unused, versionTag) = symbol.partition('LIBROOT_')
  70         print 'DEFINE_LIBROOT_KERNEL_SYMBOL_VERSION("%s", "%s", "%s");' \
  71                 % (targetSymbol, symbolName, versionTag)