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#!/usr/bin/env python
"""
# b43 firmware state dumper
#
# Copyright (C) 2008 Michael Buesch <m@bues.ch>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3
# as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import getopt
from libb43 import *
from sys import stdout
from tempfile import *
import re
def usage():
print "b43 firmware state dumper"
print ""
print "Copyright (C) 2008 Michael Buesch <m@bues.ch>"
print "Licensed under the GNU/GPL version 3"
print ""
print "Usage: b43-fwdump [OPTIONS]"
print ""
print "-h|--help Print this help text"
print "-p|--phy WIPHY The WIPHY to use. For example phy0."
print " Can be omitted, if there is only one device in the system."
print "-b|--binary BIN The firmware binary. This is required for"
print " an instruction dump."
print "-d|--dasmopt OPT Additional options to the disassembler."
print "-s|--shm Also dump SHM."
print "-S|--shmbin Do a binary SHM dump, only."
return
def parseArgs():
global phy
global binary
global dasmopt
global dumpShm
global dumpShmBin
phy = None # Autodetect
binary = None # No instruction dump
dasmopt = ""
dumpShm = False
dumpShmBin = False
try:
(opts, args) = getopt.getopt(sys.argv[1:],
"hp:b:d:sS",
[ "help", "phy=", "binary=", "dasmopt=", "shm", "shmbin" ])
except getopt.GetoptError:
usage()
sys.exit(1)
for (o, v) in opts:
if o in ("-h", "--help"):
usage()
sys.exit(0)
if o in ("-p", "--phy"):
phy = v
if o in ("-b", "--binary"):
binary = v
if o in ("-d", "--dasmopt"):
dasmopt = v
if o in ("-s", "--shm"):
dumpShm = True
if o in ("-S", "--shmbin"):
dumpShmBin = True
return
def dump_regs(prefix, regs):
if len(regs) >= 10:
template = "%s%02u: %04X "
else:
template = "%s%01u: %04X "
for i in range(0, len(regs)):
if i != 0 and i % 4 == 0:
stdout.write("\n")
stdout.write(template % (prefix, i, regs[i]))
stdout.write("\n")
return
def dasmLineIsPC(line, pc):
m = re.match(r'.*/\*\s+([0-9a-fA-F]+)\s+\*/.*', line, re.DOTALL)
if not m:
return False
linePC = int(m.group(1), 16)
return pc == linePC
def makeShortDump(dasm, pc):
dasm = dasm.splitlines()
i = 0
for line in dasm:
if dasmLineIsPC(line, pc):
break
i += 1
else:
return "<Could not find PC in the binary>"
ret = ""
pos = max(i - 8, 0)
end = min(i + 8, len(dasm) - 1)
while pos != end:
ret += dasm[pos]
if dasmLineIsPC(dasm[pos], pc):
ret += "\t\t<<<<<<<<<<<"
ret += "\n"
pos += 1
return ret
def toAscii(char):
if char >= 32 and char <= 126:
return chr(char)
return "."
def main():
parseArgs()
b43 = B43(phy)
# Fetch the hardware information
b43.ucodeStop()
gpr = b43.getGprs()
lr = b43.getLinkRegs()
off = b43.getOffsetRegs()
if dumpShm or dumpShmBin:
shm = b43.shmSharedRead()
dbg = b43.getPsmDebug()
psmcond = b43.getPsmConditions()
b43.ucodeStart()
if dumpShmBin:
# Only do a binary SHM dump
stdout.write(shm)
sys.exit(0)
print "--- B43 microcode state dump ---"
print "PC: %03X PSM-COND: %04X" % (dbg.getPc(), psmcond)
print "Link registers:"
dump_regs("lr", lr)
print "Offset registers:"
dump_regs("off", off)
print "General purpose registers:"
dump_regs("r", gpr)
print "Code:"
if binary:
try:
bintext = file(binary, "r").read()
except IOError, e:
print "Could not read binary file %s: %s" % (binary, e.strerror)
sys.exit(1)
dasm = Disassembler(bintext, dasmopt + " --paddr").getAsm()
print makeShortDump(dasm, dbg.getPc())
else:
print "<No binary supplied. See --binary option>"
if dumpShm:
print "Shared memory:"
ascii = ""
for i in range(0, len(shm)):
if i % 16 == 0 and i != 0:
stdout.write(" " + ascii + "\n")
ascii = ""
if i % 16 == 0:
stdout.write("0x%04X: " % i)
c = ord(shm[i])
stdout.write("%02X" % c)
if (i % 2 != 0):
stdout.write(" ")
ascii += toAscii(c)
stdout.write(" " + ascii + "\n")
return
try:
main()
except B43Exception:
sys.exit(1)
|
