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#!/usr/bin/env python
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2017, Linaro Limited
#
import argparse
import glob
import os
import re
import subprocess
import sys
TA_UUID_RE = re.compile(r'Status of TA (?P<uuid>[0-9a-f\-]+)')
TA_INFO_RE = re.compile(' arch: (?P<arch>\w+) '
'load address: (?P<load_addr>0x[0-9a-f]+)')
CALL_STACK_RE = re.compile('Call stack:')
# This gets the address from lines looking like this:
# E/TC:0 0x001044a8
STACK_ADDR_RE = re.compile(r'[UEIDFM]/T[AC]:.*(?P<addr>0x[0-9a-f]+)')
ABORT_ADDR_RE = re.compile('-abort at address (?P<addr>0x[0-9a-f]+)')
REGION_RE = re.compile('region [0-9]+: va (?P<addr>0x[0-9a-f]+) '
'pa 0x[0-9a-f]+ size (?P<size>0x[0-9a-f]+)')
epilog = '''
This scripts reads an OP-TEE abort or panic message from stdin and adds debug
information to the output, such as '<function> at <file>:<line>' next to each
address in the call stack. Any message generated by OP-TEE and containing a
call stack can in principle be processed by this script. This currently
includes aborts and panics from the TEE core as well as from any TA.
The paths provided on the command line are used to locate the appropriate ELF
binary (tee.elf or Trusted Application). The GNU binutils (addr2line, objdump,
nm) are used to extract the debug info.
OP-TEE abort and panic messages are sent to the secure console. They look like
the following:
E/TC:0 User TA data-abort at address 0xffffdecd (alignment fault)
...
E/TC:0 Call stack:
E/TC:0 0x4000549e
E/TC:0 0x40001f4b
E/TC:0 0x4000273f
E/TC:0 0x40005da7
Inspired by a script of the same name by the Chromium project.
Sample usage:
$ scripts/symbolize.py -d out/arm-plat-hikey/core -d ../optee_test/out/ta/*
<paste whole dump here>
^D
'''
def get_args():
parser = argparse.ArgumentParser(
formatter_class=argparse.RawDescriptionHelpFormatter,
description='Symbolizes OP-TEE abort dumps',
epilog=epilog)
parser.add_argument('-d', '--dir', action='append', nargs='+',
help='Search for ELF file in DIR. tee.elf is needed to decode '
'a TEE Core or pseudo-TA abort, while <TA_uuid>.elf is required '
'if a user-mode TA has crashed. For convenience, ELF files '
'may also be given.')
parser.add_argument('-s', '--strip_path', nargs='?',
help='Strip STRIP_PATH from file paths (default: current directory, '
'use -s with no argument to show full paths)',
default=os.getcwd())
return parser.parse_args()
class Symbolizer(object):
def __init__(self, out, dirs, strip_path):
self._out = out
self._dirs = dirs
self._strip_path = strip_path
self._addr2line = None
self._bin = 'tee.elf'
self.reset()
def get_elf(self, elf_or_uuid):
if not elf_or_uuid.endswith('.elf'):
elf_or_uuid += '.elf'
for d in self._dirs:
if d.endswith(elf_or_uuid) and os.path.isfile(d):
return d
elf = glob.glob(d + '/' + elf_or_uuid)
if elf:
return elf[0]
def set_arch(self):
if self._arch:
return
if self._bin:
p = subprocess.Popen([ 'file', self.get_elf(self._bin) ],
stdout=subprocess.PIPE)
output = p.stdout.readlines()
p.terminate()
if 'ARM aarch64,' in output[0]:
self._arch = 'aarch64-linux-gnu-'
elif 'ARM,' in output[0]:
self._arch = 'arm-linux-gnueabihf-'
def arch_prefix(self, cmd):
self.set_arch()
return self._arch + cmd
def spawn_addr2line(self):
if not self._addr2line:
elf = self.get_elf(self._bin)
if not elf:
return
cmd = self.arch_prefix('addr2line')
if not cmd:
return
self._addr2line = subprocess.Popen([cmd, '-f', '-p', '-e', elf],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE)
def subtract_load_addr(self, addr):
offs = self._load_addr
if int(offs, 16) > int(addr, 16):
return ''
return '0x{:x}'.format(int(addr, 16) - int(offs, 16))
def resolve(self, addr):
reladdr = self.subtract_load_addr(addr)
self.spawn_addr2line()
if not reladdr or not self._addr2line:
return '???'
try:
print >> self._addr2line.stdin, reladdr
ret = self._addr2line.stdout.readline().rstrip('\n')
except IOError:
ret = '!!!'
return ret
def symbol_plus_offset(self, addr):
ret = ''
prevsize = 0
reladdr = self.subtract_load_addr(addr)
elf = self.get_elf(self._bin)
cmd = self.arch_prefix('nm')
if not reladdr or not elf or not cmd:
return ''
ireladdr = int(reladdr, 16)
nm = subprocess.Popen([cmd, '--numeric-sort', '--print-size', elf],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE)
for line in iter(nm.stdout.readline, ''):
try:
addr, size, _, name = line.split()
except:
# Size is missing
addr, _, name = line.split()
size = '0'
iaddr = int(addr, 16)
isize = int(size, 16)
if iaddr == ireladdr:
ret = name
break
if iaddr < ireladdr and iaddr + isize >= ireladdr:
offs = ireladdr - iaddr
ret = name + '+' + str(offs)
break
if iaddr > ireladdr and prevsize == 0:
offs = iaddr + ireladdr
ret = prevname + '+' + str(offs)
break
prevsize = size
prevname = name
nm.terminate()
return ret
def section_plus_offset(self, addr):
ret = ''
reladdr = self.subtract_load_addr(addr)
elf = self.get_elf(self._bin)
cmd = self.arch_prefix('objdump')
if not reladdr or not elf or not cmd:
return ''
iaddr = int(reladdr, 16)
objdump = subprocess.Popen([cmd, '--section-headers', elf],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE)
for line in iter(objdump.stdout.readline, ''):
try:
idx, name, size, vma, lma, offs, algn = line.split()
except:
continue;
ivma = int(vma, 16)
isize = int(size, 16)
if ivma == iaddr:
ret = name
break
if ivma < iaddr and ivma + isize >= iaddr:
offs = iaddr - ivma
ret = name + '+' + str(offs)
break
objdump.terminate()
return ret
def process_abort(self, line):
ret = ''
match = re.search(ABORT_ADDR_RE, line)
addr = match.group('addr')
pre = match.start('addr')
post = match.end('addr')
sym = self.symbol_plus_offset(addr)
sec = self.section_plus_offset(addr)
if sym or sec:
ret += line[:pre]
ret += addr
if sym:
ret += ' ' + sym
if sec:
ret += ' ' + sec
ret += line[post:]
return ret
# Return all ELF sections with the ALLOC flag
def read_sections(self):
if self._sections:
return
elf = self.get_elf(self._bin)
cmd = self.arch_prefix('objdump')
if not elf or not cmd:
return
objdump = subprocess.Popen([cmd, '--section-headers', elf],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE)
for line in iter(objdump.stdout.readline, ''):
try:
_, name, size, vma, _, _, _ = line.split()
except:
if 'ALLOC' in line:
self._sections.append([name, int(vma, 16), int(size, 16)])
def overlaps(self, section, addr, size):
sec_addr = section[1]
sec_size = section[2]
if not size or not sec_size:
return False
return (addr <= (sec_addr + sec_size - 1)) and ((addr + size - 1) >= sec_addr)
def sections_in_region(self, addr, size):
ret = ''
addr = self.subtract_load_addr(addr)
if not addr:
return ''
iaddr = int(addr, 16)
isize = int(size, 16)
self.read_sections()
for s in self._sections:
if self.overlaps(s, iaddr, isize):
ret += ' ' + s[0]
return ret
def reset(self):
self._call_stack_found = False
self._load_addr = '0'
if self._addr2line:
self._addr2line.terminate()
self._addr2line = None
self._arch = None
self._saved_abort_line = ''
self._sections = []
self._bin = "tee.elf"
def write(self, line):
if self._call_stack_found:
match = re.search(STACK_ADDR_RE, line)
if match:
addr = match.group('addr')
pre = match.start('addr')
post = match.end('addr')
self._out.write(line[:pre])
self._out.write(addr)
res = self.resolve(addr)
if self._strip_path:
res = re.sub(re.escape(self._strip_path) + '/*', '',
res)
self._out.write(' ' + res)
self._out.write(line[post:])
return
else:
self.reset()
match = re.search(REGION_RE, line)
if match:
addr = match.group('addr')
size = match.group('size')
self._out.write(line.strip() +
self.sections_in_region(addr, size) + '\n');
return
match = re.search(CALL_STACK_RE, line)
if match:
self._call_stack_found = True
# Here is a good place to resolve the abort address because we
# have all the information we need
if self._saved_abort_line:
self._out.write(self.process_abort(self._saved_abort_line))
match = re.search(TA_UUID_RE, line)
if match:
self._bin = match.group('uuid')
match = re.search(TA_INFO_RE, line)
if match:
self._load_addr = match.group('load_addr')
match = re.search(ABORT_ADDR_RE, line)
if match:
self.reset()
# At this point the arch and TA load address are unknown.
# Save the line so We can translate the abort address later.
self._saved_abort_line = line
self._out.write(line)
def flush(self):
self._out.flush()
def main():
args = get_args()
if args.dir:
# Flatten list in case -d is used several times *and* with multiple
# arguments
args.dirs = [item for sublist in args.dir for item in sublist]
else:
args.dirs = []
symbolizer = Symbolizer(sys.stdout, args.dirs, args.strip_path)
for line in sys.stdin:
symbolizer.write(line)
symbolizer.flush()
if __name__ == "__main__":
main()
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