Kevin O'Connor | 202024a | 2009-01-17 10:41:28 -0500 | [diff] [blame^] | 1 | #!/usr/bin/env python |
| 2 | # Script to arrange sections to ensure fixed offsets. |
| 3 | # |
| 4 | # Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> |
| 5 | # |
| 6 | # This file may be distributed under the terms of the GNU GPLv3 license. |
| 7 | |
| 8 | import sys |
| 9 | |
| 10 | def main(): |
| 11 | # Read in section names and sizes |
| 12 | |
| 13 | # sections = [(idx, name, size, align), ...] |
| 14 | sections = [] |
| 15 | for line in sys.stdin.readlines(): |
| 16 | try: |
| 17 | idx, name, size, vma, lma, fileoff, align = line.split() |
| 18 | if align[:3] != '2**': |
| 19 | continue |
| 20 | sections.append(( |
| 21 | int(idx), name, int(size, 16), int(align[3:]))) |
| 22 | except: |
| 23 | pass |
| 24 | |
| 25 | # fixedsections = [(addr, sectioninfo), ...] |
| 26 | fixedsections = [] |
| 27 | textsections = [] |
| 28 | rodatasections = [] |
| 29 | datasections = [] |
| 30 | |
| 31 | # Find desired sections. |
| 32 | for section in sections: |
| 33 | name = section[1] |
| 34 | if name[:11] == '.fixedaddr.': |
| 35 | addr = int(name[11:], 16) |
| 36 | fixedsections.append((addr, section)) |
| 37 | if name[:6] == '.text.': |
| 38 | textsections.append(section) |
| 39 | if name[:17] == '.rodata.__func__.' or name == '.rodata.str1.1': |
| 40 | rodatasections.append(section) |
| 41 | if name[:8] == '.data16.': |
| 42 | datasections.append(section) |
| 43 | |
| 44 | # Write regular sections |
| 45 | for section in textsections: |
| 46 | name = section[1] |
| 47 | sys.stdout.write("*(%s)\n" % (name,)) |
| 48 | sys.stdout.write("code16_rodata = . ;\n") |
| 49 | for section in rodatasections: |
| 50 | name = section[1] |
| 51 | sys.stdout.write("*(%s)\n" % (name,)) |
| 52 | for section in datasections: |
| 53 | name = section[1] |
| 54 | sys.stdout.write("*(%s)\n" % (name,)) |
| 55 | |
| 56 | # Write fixed sections |
| 57 | sys.stdout.write("freespace1_start = . ;\n") |
| 58 | first = 1 |
| 59 | for addr, section in fixedsections: |
| 60 | name = section[1] |
| 61 | sys.stdout.write(". = ( 0x%x - code16_start ) ;\n" % (addr,)) |
| 62 | if first: |
| 63 | first = 0 |
| 64 | sys.stdout.write("freespace1_end = . ;\n") |
| 65 | sys.stdout.write("*(%s)\n" % (name,)) |
| 66 | |
| 67 | if __name__ == '__main__': |
| 68 | main() |