blob: 54d18b8bf22aed995977a7258d3a1eca334c78d0 [file] [log] [blame]
#!/usr/bin/env python
# Simple script to convert the output from 'nm' to a C style header
# file with defined offsets.
#
# Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import sys
import string
def printUsage():
print "Usage:\n %s <output file>" % (sys.argv[0],)
sys.exit(1)
def main():
if len(sys.argv) != 2:
printUsage()
# Find symbols (that are valid)
syms = []
lines = sys.stdin.readlines()
for line in lines:
addr, type, sym = line.split()
if type not in 'TA':
# Only interested in global symbols in text segment
continue
for c in sym:
if c not in string.letters + string.digits + '_':
break
else:
syms.append((sym, addr))
# Build guard string
guardstr = ''
for c in sys.argv[1]:
if c not in string.letters + string.digits + '_':
guardstr += '_'
else:
guardstr += c
# Generate header
f = open(sys.argv[1], 'wb')
f.write("""
#ifndef __OFFSET_AUTO_H__%s
#define __OFFSET_AUTO_H__%s
// Auto generated file - please see defsyms.py.
// This file contains symbol offsets of a compiled binary.
""" % (guardstr, guardstr))
for sym, addr in syms:
f.write("#define OFFSET_%s 0x%s\n" % (sym, addr))
f.write("""
#endif // __OFFSET_AUTO_H__%s
""" % (guardstr,))
if __name__ == '__main__':
main()