mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
143 lines
4.6 KiB
Python
143 lines
4.6 KiB
Python
#!/usr/local/bin/python
|
|
#
|
|
# Copyright 2004 John-Mark Gurney
|
|
# All rights reserved.
|
|
#
|
|
# 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 BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR 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.
|
|
#
|
|
# $FreeBSD$
|
|
|
|
import sys
|
|
import os
|
|
import popen2
|
|
import re
|
|
|
|
gdb_cmd = 'kgdb %(p)s/kernel.debug %(core)s | tee /tmp/gdb.log'
|
|
#GDB regex
|
|
filenamere = re.compile(r'filename\s+=\s+0x[0-9a-f]+\s("(?P<fn>[^"]+)"|(?P<error><[^>]*>))', re.M)
|
|
addressre = re.compile(r'address\s+=\s+(?P<ad>0x[0-9a-f]+)', re.M)
|
|
nextre = re.compile(r'tqe_next\s+=\s+(?P<ad>0x[0-9a-f]+)', re.M)
|
|
printre = re.compile(r'\$\d+\s+=\s+')
|
|
|
|
#Paths to search for ko's/debugs
|
|
kld_debug_paths = []
|
|
|
|
if len(sys.argv[1:]) < 2:
|
|
print 'Usage: prog <kerncomp> <core> [<paths>]'
|
|
sys.exit(1)
|
|
|
|
#Get the base modules path
|
|
pfs = sys.argv[1].split('/')
|
|
try:
|
|
i = 0
|
|
while 1:
|
|
i = i + pfs[i:].index('sys') + 1
|
|
except:
|
|
pass
|
|
|
|
if i == -1:
|
|
sys.stderr.write("No sys dir in kernel source path: %s\n" % sys.argv[1])
|
|
sys.exit(0)
|
|
|
|
kld_debug_paths.append('/'.join(pfs[:i] + ['modules']))
|
|
kld_debug_paths.append(sys.argv[1])
|
|
#kld_debug_paths.append(sys.argv[3:])
|
|
gdb_cmd = gdb_cmd % {'p': sys.argv[1], 'core': sys.argv[2] }
|
|
|
|
#Start gdb
|
|
gdb = popen2.popen4(gdb_cmd)
|
|
|
|
def searchfor(inp, re, j = 0, l = None):
|
|
"""searchfor(inp, re, j, l): Searches for regex re in inp. It will
|
|
automaticly add more lines. If j is set, the lines will be joined together.
|
|
l can provide a starting line to help search against. Return value is a
|
|
tupple of the last line, and the match if any."""
|
|
ret = None
|
|
if not l:
|
|
l = inp.readline()
|
|
ret = re.search(l)
|
|
while l and not ret:
|
|
if j:
|
|
l += inp.readline()
|
|
else:
|
|
l = inp.readline()
|
|
ret = re.search(l)
|
|
|
|
return (l, ret)
|
|
|
|
def get_addresses(inp, out):
|
|
"""get_addresses(inp, out): It will search for addresses from gdb.
|
|
inp and out, are the gdb input and output respectively. Return value is
|
|
a list of tupples. The tupples contain the filename and the address the
|
|
filename was loaded."""
|
|
addr = []
|
|
nxad = 1
|
|
while nxad:
|
|
if nxad == 1:
|
|
out.write("print linker_files.tqh_first[0]\n")
|
|
else:
|
|
out.write("print *(struct linker_file *)%d\n" % nxad)
|
|
out.flush()
|
|
l = searchfor(inp, printre)[0]
|
|
l, fn = searchfor(inp, filenamere, 1, l)
|
|
if not fn.group('fn'):
|
|
sys.stderr.write("got error: %s\n" % fn.group('error'))
|
|
nxad = 0
|
|
else:
|
|
l, ad = searchfor(inp, addressre, 1, l)
|
|
l, nx = searchfor(inp, nextre, 1, l)
|
|
addr.append((fn.group('fn'), long(ad.group('ad'), 16)))
|
|
nxad = long(nx.group('ad'), 16)
|
|
|
|
return addr
|
|
|
|
#Get the addresses
|
|
addr = get_addresses(gdb[0], gdb[1])
|
|
|
|
#Pass through the resulting addresses, skipping the kernel.
|
|
for i in addr[1:]:
|
|
for j in kld_debug_paths:
|
|
#Try .debug first.
|
|
p = popen2.popen4('find %s -type f -name "%s.debug"' % (j, i[0]))[0].read().strip()
|
|
if p:
|
|
break
|
|
#Try just .ko if .debug wasn't found.
|
|
p = popen2.popen4('find %s -type f -name "%s"' % (j, i[0]))[0].read().strip()
|
|
if p:
|
|
break
|
|
|
|
if not p:
|
|
#Tell our user that we couldn't find it.
|
|
a = i[1]
|
|
sys.stderr.write("Can't find module: %s (addr: %d + header)\n" % (i[0], a))
|
|
print '#add-symbol-file <file>', a, '#add header'
|
|
continue
|
|
|
|
#j = popen2.popen4('objdump --section-headers /boot/kernel/%s | grep "\.text"' % i[0])[0].read().strip().split()
|
|
#Output the necessary information
|
|
j = popen2.popen4('objdump --section-headers "%s" | grep "\.text"' % p)[0].read().strip().split()
|
|
try:
|
|
a = int(j[5], 16)
|
|
print 'add-symbol-file', p, i[1] + a
|
|
except IndexError:
|
|
sys.stderr.write('Bad file: %s, address: %d\n' % (i[0], i[1]))
|