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#!/usr/bin/env python
#
# Script for creating a "struct extract" list for fwcutter_list.h
#
# Copyright (c) 2008 Michael Buesch <mb@bu3sch.de>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
#
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
import os
import re
import hashlib
if len(sys.argv) != 2:
print "Usage: %s path/to/wl.o" % sys.argv[0]
sys.exit(1)
fn = sys.argv[1]
pipe = os.popen("objdump -t %s" % fn)
syms = pipe.readlines()
pipe = os.popen("objdump --headers %s" % fn)
headers = pipe.readlines()
# Get the .rodata fileoffset
rodata_fileoffset = None
rofileoff_re = re.compile(r"\d+\s+\.rodata\s+[0-9a-fA-F]+\s+[0-9a-fA-F]+\s+[0-9a-fA-F]+\s+([0-9a-fA-F]+)\s+.")
for line in headers:
line = line.strip()
m = rofileoff_re.match(line)
if m:
rodata_fileoffset = int(m.group(1), 16)
break
if rodata_fileoffset == None:
print "ERROR: Could not find .rodata fileoffset"
sys.exit(1)
md5sum = hashlib.md5(file(fn, "r").read())
print "static struct extract _%s[] =" % md5sum.hexdigest()
print "{"
sym_re = re.compile(r"([0-9a-fA-F]+)\s+g\s+O\s+\.rodata\s+([0-9a-fA-F]+) d11([-_\s\w0-9]+)")
ucode_re = re.compile(r"ucode(\d+)")
for sym in syms:
sym = sym.strip()
m = sym_re.match(sym)
if not m:
continue
pos = int(m.group(1), 16) + rodata_fileoffset
size = int(m.group(2), 16)
name = m.group(3)
if name[-2:] == "sz":
continue
type = None
if "initvals" in name:
type = "EXT_IV"
size -= 8
if "pcm" in name:
type = "EXT_PCM"
if "bommajor" in name:
print "\t/* ucode major version at offset 0x%x */" % pos
continue
if "bomminor" in name:
print "\t/* ucode minor version at offset 0x%x */" % pos
continue
if "ucode_2w" in name:
continue
m = ucode_re.match(name)
if m:
corerev = int(m.group(1))
if corerev <= 4:
type = "EXT_UCODE_1"
elif corerev >= 5 and corerev <= 14:
type = "EXT_UCODE_2"
else:
type = "EXT_UCODE_3"
if not type:
print "\t/* ERROR: Could not guess data type for: %s */" % name
continue
print "\t{ .name = \"%s\", .offset = 0x%X, .type = %s, .length = 0x%X }," % (name, pos, type, size)
print "\tEXTRACT_LIST_END"
print "};"
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