Generated v2 prefixes

This commit is contained in:
geky-bot
2023-05-04 18:31:30 +00:00
67 changed files with 26771 additions and 5203 deletions
+647 -226
View File
@@ -1,42 +1,188 @@
#!/usr/bin/env python3
#
# Script to find data size at the function level. Basically just a bit wrapper
# Script to find data size at the function level. Basically just a big wrapper
# around nm with some extra conveniences for comparing builds. Heavily inspired
# by Linux's Bloat-O-Meter.
#
# Example:
# ./scripts/data.py lfs2.o lfs2_util.o -Ssize
#
# Copyright (c) 2022, The littlefs authors.
# Copyright (c) 2020, Arm Limited. All rights reserved.
# SPDX-License-Identifier: BSD-3-Clause
#
import os
import glob
import itertools as it
import subprocess as sp
import shlex
import re
import csv
import collections as co
import csv
import difflib
import itertools as it
import math as m
import os
import re
import shlex
import subprocess as sp
OBJ_PATHS = ['*.o']
NM_PATH = ['nm']
NM_TYPES = 'dDbB'
OBJDUMP_PATH = ['objdump']
def collect(paths, **args):
results = co.defaultdict(lambda: 0)
pattern = re.compile(
# integer fields
class Int(co.namedtuple('Int', 'x')):
__slots__ = ()
def __new__(cls, x=0):
if isinstance(x, Int):
return x
if isinstance(x, str):
try:
x = int(x, 0)
except ValueError:
# also accept +-∞ and +-inf
if re.match('^\s*\+?\s*(?:∞|inf)\s*$', x):
x = m.inf
elif re.match('^\s*-\s*(?:∞|inf)\s*$', x):
x = -m.inf
else:
raise
assert isinstance(x, int) or m.isinf(x), x
return super().__new__(cls, x)
def __str__(self):
if self.x == m.inf:
return ''
elif self.x == -m.inf:
return '-∞'
else:
return str(self.x)
def __int__(self):
assert not m.isinf(self.x)
return self.x
def __float__(self):
return float(self.x)
none = '%7s' % '-'
def table(self):
return '%7s' % (self,)
diff_none = '%7s' % '-'
diff_table = table
def diff_diff(self, other):
new = self.x if self else 0
old = other.x if other else 0
diff = new - old
if diff == +m.inf:
return '%7s' % '+∞'
elif diff == -m.inf:
return '%7s' % '-∞'
else:
return '%+7d' % diff
def ratio(self, other):
new = self.x if self else 0
old = other.x if other else 0
if m.isinf(new) and m.isinf(old):
return 0.0
elif m.isinf(new):
return +m.inf
elif m.isinf(old):
return -m.inf
elif not old and not new:
return 0.0
elif not old:
return 1.0
else:
return (new-old) / old
def __add__(self, other):
return self.__class__(self.x + other.x)
def __sub__(self, other):
return self.__class__(self.x - other.x)
def __mul__(self, other):
return self.__class__(self.x * other.x)
# data size results
class DataResult(co.namedtuple('DataResult', [
'file', 'function',
'size'])):
_by = ['file', 'function']
_fields = ['size']
_sort = ['size']
_types = {'size': Int}
__slots__ = ()
def __new__(cls, file='', function='', size=0):
return super().__new__(cls, file, function,
Int(size))
def __add__(self, other):
return DataResult(self.file, self.function,
self.size + other.size)
def openio(path, mode='r', buffering=-1):
# allow '-' for stdin/stdout
if path == '-':
if mode == 'r':
return os.fdopen(os.dup(sys.stdin.fileno()), mode, buffering)
else:
return os.fdopen(os.dup(sys.stdout.fileno()), mode, buffering)
else:
return open(path, mode, buffering)
def collect(obj_paths, *,
nm_path=NM_PATH,
nm_types=NM_TYPES,
objdump_path=OBJDUMP_PATH,
sources=None,
everything=False,
**args):
size_pattern = re.compile(
'^(?P<size>[0-9a-fA-F]+)' +
' (?P<type>[%s])' % re.escape(args['type']) +
' (?P<type>[%s])' % re.escape(nm_types) +
' (?P<func>.+?)$')
for path in paths:
# note nm-tool may contain extra args
cmd = args['nm_tool'] + ['--size-sort', path]
line_pattern = re.compile(
'^\s+(?P<no>[0-9]+)'
'(?:\s+(?P<dir>[0-9]+))?'
'\s+.*'
'\s+(?P<path>[^\s]+)$')
info_pattern = re.compile(
'^(?:.*(?P<tag>DW_TAG_[a-z_]+).*'
'|.*DW_AT_name.*:\s*(?P<name>[^:\s]+)\s*'
'|.*DW_AT_decl_file.*:\s*(?P<file>[0-9]+)\s*)$')
results = []
for path in obj_paths:
# guess the source, if we have debug-info we'll replace this later
file = re.sub('(\.o)?$', '.c', path, 1)
# find symbol sizes
results_ = []
# note nm-path may contain extra args
cmd = nm_path + ['--size-sort', path]
if args.get('verbose'):
print(' '.join(shlex.quote(c) for c in cmd))
proc = sp.Popen(cmd,
stdout=sp.PIPE,
stderr=sp.PIPE if not args.get('verbose') else None,
universal_newlines=True,
errors='replace')
errors='replace',
close_fds=False)
for line in proc.stdout:
m = pattern.match(line)
m = size_pattern.match(line)
if m:
results[(path, m.group('func'))] += int(m.group('size'), 16)
func = m.group('func')
# discard internal functions
if not everything and func.startswith('__'):
continue
results_.append(DataResult(
file, func,
int(m.group('size'), 16)))
proc.wait()
if proc.returncode != 0:
if not args.get('verbose'):
@@ -44,240 +190,515 @@ def collect(paths, **args):
sys.stdout.write(line)
sys.exit(-1)
flat_results = []
for (file, func), size in results.items():
# map to source files
if args.get('build_dir'):
file = re.sub('%s/*' % re.escape(args['build_dir']), '', file)
# replace .o with .c, different scripts report .o/.c, we need to
# choose one if we want to deduplicate csv files
file = re.sub('\.o$', '.c', file)
# discard internal functions
if not args.get('everything'):
if func.startswith('__'):
continue
# discard .8449 suffixes created by optimizer
func = re.sub('\.[0-9]+', '', func)
flat_results.append((file, func, size))
return flat_results
# try to figure out the source file if we have debug-info
dirs = {}
files = {}
# note objdump-path may contain extra args
cmd = objdump_path + ['--dwarf=rawline', path]
if args.get('verbose'):
print(' '.join(shlex.quote(c) for c in cmd))
proc = sp.Popen(cmd,
stdout=sp.PIPE,
stderr=sp.PIPE if not args.get('verbose') else None,
universal_newlines=True,
errors='replace',
close_fds=False)
for line in proc.stdout:
# note that files contain references to dirs, which we
# dereference as soon as we see them as each file table follows a
# dir table
m = line_pattern.match(line)
if m:
if not m.group('dir'):
# found a directory entry
dirs[int(m.group('no'))] = m.group('path')
else:
# found a file entry
dir = int(m.group('dir'))
if dir in dirs:
files[int(m.group('no'))] = os.path.join(
dirs[dir],
m.group('path'))
else:
files[int(m.group('no'))] = m.group('path')
proc.wait()
if proc.returncode != 0:
if not args.get('verbose'):
for line in proc.stderr:
sys.stdout.write(line)
# do nothing on error, we don't need objdump to work, source files
# may just be inaccurate
pass
def main(**args):
def openio(path, mode='r'):
if path == '-':
if 'r' in mode:
return os.fdopen(os.dup(sys.stdin.fileno()), 'r')
defs = {}
is_func = False
f_name = None
f_file = None
# note objdump-path may contain extra args
cmd = objdump_path + ['--dwarf=info', path]
if args.get('verbose'):
print(' '.join(shlex.quote(c) for c in cmd))
proc = sp.Popen(cmd,
stdout=sp.PIPE,
stderr=sp.PIPE if not args.get('verbose') else None,
universal_newlines=True,
errors='replace',
close_fds=False)
for line in proc.stdout:
# state machine here to find definitions
m = info_pattern.match(line)
if m:
if m.group('tag'):
if is_func:
defs[f_name] = files.get(f_file, '?')
is_func = (m.group('tag') == 'DW_TAG_subprogram')
elif m.group('name'):
f_name = m.group('name')
elif m.group('file'):
f_file = int(m.group('file'))
if is_func:
defs[f_name] = files.get(f_file, '?')
proc.wait()
if proc.returncode != 0:
if not args.get('verbose'):
for line in proc.stderr:
sys.stdout.write(line)
# do nothing on error, we don't need objdump to work, source files
# may just be inaccurate
pass
for r in results_:
# find best matching debug symbol, this may be slightly different
# due to optimizations
if defs:
# exact match? avoid difflib if we can for speed
if r.function in defs:
file = defs[r.function]
else:
_, file = max(
defs.items(),
key=lambda d: difflib.SequenceMatcher(None,
d[0],
r.function, False).ratio())
else:
return os.fdopen(os.dup(sys.stdout.fileno()), 'w')
else:
return open(path, mode)
file = r.file
# find sizes
if not args.get('use', None):
# find .o files
paths = []
for path in args['obj_paths']:
if os.path.isdir(path):
path = path + '/*.o'
# ignore filtered sources
if sources is not None:
if not any(
os.path.abspath(file) == os.path.abspath(s)
for s in sources):
continue
else:
# default to only cwd
if not everything and not os.path.commonpath([
os.getcwd(),
os.path.abspath(file)]) == os.getcwd():
continue
for path in glob.glob(path):
paths.append(path)
# simplify path
if os.path.commonpath([
os.getcwd(),
os.path.abspath(file)]) == os.getcwd():
file = os.path.relpath(file)
else:
file = os.path.abspath(file)
if not paths:
print('no .obj files found in %r?' % args['obj_paths'])
results.append(r._replace(file=file))
return results
def fold(Result, results, *,
by=None,
defines=None,
**_):
if by is None:
by = Result._by
for k in it.chain(by or [], (k for k, _ in defines or [])):
if k not in Result._by and k not in Result._fields:
print("error: could not find field %r?" % k)
sys.exit(-1)
results = collect(paths, **args)
# filter by matching defines
if defines is not None:
results_ = []
for r in results:
if all(getattr(r, k) in vs for k, vs in defines):
results_.append(r)
results = results_
# organize results into conflicts
folding = co.OrderedDict()
for r in results:
name = tuple(getattr(r, k) for k in by)
if name not in folding:
folding[name] = []
folding[name].append(r)
# merge conflicts
folded = []
for name, rs in folding.items():
folded.append(sum(rs[1:], start=rs[0]))
return folded
def table(Result, results, diff_results=None, *,
by=None,
fields=None,
sort=None,
summary=False,
all=False,
percent=False,
**_):
all_, all = all, __builtins__.all
if by is None:
by = Result._by
if fields is None:
fields = Result._fields
types = Result._types
# fold again
results = fold(Result, results, by=by)
if diff_results is not None:
diff_results = fold(Result, diff_results, by=by)
# organize by name
table = {
','.join(str(getattr(r, k) or '') for k in by): r
for r in results}
diff_table = {
','.join(str(getattr(r, k) or '') for k in by): r
for r in diff_results or []}
names = list(table.keys() | diff_table.keys())
# sort again, now with diff info, note that python's sort is stable
names.sort()
if diff_results is not None:
names.sort(key=lambda n: tuple(
types[k].ratio(
getattr(table.get(n), k, None),
getattr(diff_table.get(n), k, None))
for k in fields),
reverse=True)
if sort:
for k, reverse in reversed(sort):
names.sort(
key=lambda n: tuple(
(getattr(table[n], k),)
if getattr(table.get(n), k, None) is not None else ()
for k in ([k] if k else [
k for k in Result._sort if k in fields])),
reverse=reverse ^ (not k or k in Result._fields))
# build up our lines
lines = []
# header
header = []
header.append('%s%s' % (
','.join(by),
' (%d added, %d removed)' % (
sum(1 for n in table if n not in diff_table),
sum(1 for n in diff_table if n not in table))
if diff_results is not None and not percent else '')
if not summary else '')
if diff_results is None:
for k in fields:
header.append(k)
elif percent:
for k in fields:
header.append(k)
else:
for k in fields:
header.append('o'+k)
for k in fields:
header.append('n'+k)
for k in fields:
header.append('d'+k)
header.append('')
lines.append(header)
def table_entry(name, r, diff_r=None, ratios=[]):
entry = []
entry.append(name)
if diff_results is None:
for k in fields:
entry.append(getattr(r, k).table()
if getattr(r, k, None) is not None
else types[k].none)
elif percent:
for k in fields:
entry.append(getattr(r, k).diff_table()
if getattr(r, k, None) is not None
else types[k].diff_none)
else:
for k in fields:
entry.append(getattr(diff_r, k).diff_table()
if getattr(diff_r, k, None) is not None
else types[k].diff_none)
for k in fields:
entry.append(getattr(r, k).diff_table()
if getattr(r, k, None) is not None
else types[k].diff_none)
for k in fields:
entry.append(types[k].diff_diff(
getattr(r, k, None),
getattr(diff_r, k, None)))
if diff_results is None:
entry.append('')
elif percent:
entry.append(' (%s)' % ', '.join(
'+∞%' if t == +m.inf
else '-∞%' if t == -m.inf
else '%+.1f%%' % (100*t)
for t in ratios))
else:
entry.append(' (%s)' % ', '.join(
'+∞%' if t == +m.inf
else '-∞%' if t == -m.inf
else '%+.1f%%' % (100*t)
for t in ratios
if t)
if any(ratios) else '')
return entry
# entries
if not summary:
for name in names:
r = table.get(name)
if diff_results is None:
diff_r = None
ratios = None
else:
diff_r = diff_table.get(name)
ratios = [
types[k].ratio(
getattr(r, k, None),
getattr(diff_r, k, None))
for k in fields]
if not all_ and not any(ratios):
continue
lines.append(table_entry(name, r, diff_r, ratios))
# total
r = next(iter(fold(Result, results, by=[])), None)
if diff_results is None:
diff_r = None
ratios = None
else:
diff_r = next(iter(fold(Result, diff_results, by=[])), None)
ratios = [
types[k].ratio(
getattr(r, k, None),
getattr(diff_r, k, None))
for k in fields]
lines.append(table_entry('TOTAL', r, diff_r, ratios))
# find the best widths, note that column 0 contains the names and column -1
# the ratios, so those are handled a bit differently
widths = [
((max(it.chain([w], (len(l[i]) for l in lines)))+1+4-1)//4)*4-1
for w, i in zip(
it.chain([23], it.repeat(7)),
range(len(lines[0])-1))]
# print our table
for line in lines:
print('%-*s %s%s' % (
widths[0], line[0],
' '.join('%*s' % (w, x)
for w, x in zip(widths[1:], line[1:-1])),
line[-1]))
def main(obj_paths, *,
by=None,
fields=None,
defines=None,
sort=None,
**args):
# find sizes
if not args.get('use', None):
results = collect(obj_paths, **args)
else:
results = []
with openio(args['use']) as f:
r = csv.DictReader(f)
results = [
( result['file'],
result['name'],
int(result['data_size']))
for result in r
if result.get('data_size') not in {None, ''}]
reader = csv.DictReader(f, restval='')
for r in reader:
try:
results.append(DataResult(
**{k: r[k] for k in DataResult._by
if k in r and r[k].strip()},
**{k: r['data_'+k] for k in DataResult._fields
if 'data_'+k in r and r['data_'+k].strip()}))
except TypeError:
pass
total = 0
for _, _, size in results:
total += size
# fold
results = fold(DataResult, results, by=by, defines=defines)
# find previous results?
if args.get('diff'):
try:
with openio(args['diff']) as f:
r = csv.DictReader(f)
prev_results = [
( result['file'],
result['name'],
int(result['data_size']))
for result in r
if result.get('data_size') not in {None, ''}]
except FileNotFoundError:
prev_results = []
prev_total = 0
for _, _, size in prev_results:
prev_total += size
# sort, note that python's sort is stable
results.sort()
if sort:
for k, reverse in reversed(sort):
results.sort(
key=lambda r: tuple(
(getattr(r, k),) if getattr(r, k) is not None else ()
for k in ([k] if k else DataResult._sort)),
reverse=reverse ^ (not k or k in DataResult._fields))
# write results to CSV
if args.get('output'):
merged_results = co.defaultdict(lambda: {})
other_fields = []
# merge?
if args.get('merge'):
try:
with openio(args['merge']) as f:
r = csv.DictReader(f)
for result in r:
file = result.pop('file', '')
func = result.pop('name', '')
result.pop('data_size', None)
merged_results[(file, func)] = result
other_fields = result.keys()
except FileNotFoundError:
pass
for file, func, size in results:
merged_results[(file, func)]['data_size'] = size
with openio(args['output'], 'w') as f:
w = csv.DictWriter(f, ['file', 'name', *other_fields, 'data_size'])
w.writeheader()
for (file, func), result in sorted(merged_results.items()):
w.writerow({'file': file, 'name': func, **result})
writer = csv.DictWriter(f,
(by if by is not None else DataResult._by)
+ ['data_'+k for k in (
fields if fields is not None else DataResult._fields)])
writer.writeheader()
for r in results:
writer.writerow(
{k: getattr(r, k) for k in (
by if by is not None else DataResult._by)}
| {'data_'+k: getattr(r, k) for k in (
fields if fields is not None else DataResult._fields)})
# print results
def dedup_entries(results, by='name'):
entries = co.defaultdict(lambda: 0)
for file, func, size in results:
entry = (file if by == 'file' else func)
entries[entry] += size
return entries
# find previous results?
if args.get('diff'):
diff_results = []
try:
with openio(args['diff']) as f:
reader = csv.DictReader(f, restval='')
for r in reader:
if not any('data_'+k in r and r['data_'+k].strip()
for k in DataResult._fields):
continue
try:
diff_results.append(DataResult(
**{k: r[k] for k in DataResult._by
if k in r and r[k].strip()},
**{k: r['data_'+k] for k in DataResult._fields
if 'data_'+k in r and r['data_'+k].strip()}))
except TypeError:
pass
except FileNotFoundError:
pass
def diff_entries(olds, news):
diff = co.defaultdict(lambda: (0, 0, 0, 0))
for name, new in news.items():
diff[name] = (0, new, new, 1.0)
for name, old in olds.items():
_, new, _, _ = diff[name]
diff[name] = (old, new, new-old, (new-old)/old if old else 1.0)
return diff
# fold
diff_results = fold(DataResult, diff_results, by=by, defines=defines)
def sorted_entries(entries):
if args.get('size_sort'):
return sorted(entries, key=lambda x: (-x[1], x))
elif args.get('reverse_size_sort'):
return sorted(entries, key=lambda x: (+x[1], x))
else:
return sorted(entries)
# print table
if not args.get('quiet'):
table(DataResult, results,
diff_results if args.get('diff') else None,
by=by if by is not None else ['function'],
fields=fields,
sort=sort,
**args)
def sorted_diff_entries(entries):
if args.get('size_sort'):
return sorted(entries, key=lambda x: (-x[1][1], x))
elif args.get('reverse_size_sort'):
return sorted(entries, key=lambda x: (+x[1][1], x))
else:
return sorted(entries, key=lambda x: (-x[1][3], x))
def print_header(by=''):
if not args.get('diff'):
print('%-36s %7s' % (by, 'size'))
else:
print('%-36s %7s %7s %7s' % (by, 'old', 'new', 'diff'))
def print_entry(name, size):
print("%-36s %7d" % (name, size))
def print_diff_entry(name, old, new, diff, ratio):
print("%-36s %7s %7s %+7d%s" % (name,
old or "-",
new or "-",
diff,
' (%+.1f%%)' % (100*ratio) if ratio else ''))
def print_entries(by='name'):
entries = dedup_entries(results, by=by)
if not args.get('diff'):
print_header(by=by)
for name, size in sorted_entries(entries.items()):
print_entry(name, size)
else:
prev_entries = dedup_entries(prev_results, by=by)
diff = diff_entries(prev_entries, entries)
print_header(by='%s (%d added, %d removed)' % (by,
sum(1 for old, _, _, _ in diff.values() if not old),
sum(1 for _, new, _, _ in diff.values() if not new)))
for name, (old, new, diff, ratio) in sorted_diff_entries(
diff.items()):
if ratio or args.get('all'):
print_diff_entry(name, old, new, diff, ratio)
def print_totals():
if not args.get('diff'):
print_entry('TOTAL', total)
else:
ratio = (0.0 if not prev_total and not total
else 1.0 if not prev_total
else (total-prev_total)/prev_total)
print_diff_entry('TOTAL',
prev_total, total,
total-prev_total,
ratio)
if args.get('quiet'):
pass
elif args.get('summary'):
print_header()
print_totals()
elif args.get('files'):
print_entries(by='file')
print_totals()
else:
print_entries(by='name')
print_totals()
if __name__ == "__main__":
import argparse
import sys
parser = argparse.ArgumentParser(
description="Find data size at the function level.")
parser.add_argument('obj_paths', nargs='*', default=OBJ_PATHS,
help="Description of where to find *.o files. May be a directory \
or a list of paths. Defaults to %r." % OBJ_PATHS)
parser.add_argument('-v', '--verbose', action='store_true',
description="Find data size at the function level.",
allow_abbrev=False)
parser.add_argument(
'obj_paths',
nargs='*',
help="Input *.o files.")
parser.add_argument(
'-v', '--verbose',
action='store_true',
help="Output commands that run behind the scenes.")
parser.add_argument('-q', '--quiet', action='store_true',
parser.add_argument(
'-q', '--quiet',
action='store_true',
help="Don't show anything, useful with -o.")
parser.add_argument('-o', '--output',
parser.add_argument(
'-o', '--output',
help="Specify CSV file to store results.")
parser.add_argument('-u', '--use',
help="Don't compile and find data sizes, instead use this CSV file.")
parser.add_argument('-d', '--diff',
help="Specify CSV file to diff data size against.")
parser.add_argument('-m', '--merge',
help="Merge with an existing CSV file when writing to output.")
parser.add_argument('-a', '--all', action='store_true',
help="Show all functions, not just the ones that changed.")
parser.add_argument('-A', '--everything', action='store_true',
parser.add_argument(
'-u', '--use',
help="Don't parse anything, use this CSV file.")
parser.add_argument(
'-d', '--diff',
help="Specify CSV file to diff against.")
parser.add_argument(
'-a', '--all',
action='store_true',
help="Show all, not just the ones that changed.")
parser.add_argument(
'-p', '--percent',
action='store_true',
help="Only show percentage change, not a full diff.")
parser.add_argument(
'-b', '--by',
action='append',
choices=DataResult._by,
help="Group by this field.")
parser.add_argument(
'-f', '--field',
dest='fields',
action='append',
choices=DataResult._fields,
help="Show this field.")
parser.add_argument(
'-D', '--define',
dest='defines',
action='append',
type=lambda x: (lambda k,v: (k, set(v.split(','))))(*x.split('=', 1)),
help="Only include results where this field is this value.")
class AppendSort(argparse.Action):
def __call__(self, parser, namespace, value, option):
if namespace.sort is None:
namespace.sort = []
namespace.sort.append((value, True if option == '-S' else False))
parser.add_argument(
'-s', '--sort',
nargs='?',
action=AppendSort,
help="Sort by this field.")
parser.add_argument(
'-S', '--reverse-sort',
nargs='?',
action=AppendSort,
help="Sort by this field, but backwards.")
parser.add_argument(
'-Y', '--summary',
action='store_true',
help="Only show the total.")
parser.add_argument(
'-F', '--source',
dest='sources',
action='append',
help="Only consider definitions in this file. Defaults to anything "
"in the current directory.")
parser.add_argument(
'--everything',
action='store_true',
help="Include builtin and libc specific symbols.")
parser.add_argument('-s', '--size-sort', action='store_true',
help="Sort by size.")
parser.add_argument('-S', '--reverse-size-sort', action='store_true',
help="Sort by size, but backwards.")
parser.add_argument('-F', '--files', action='store_true',
help="Show file-level data sizes. Note this does not include padding! "
"So sizes may differ from other tools.")
parser.add_argument('-Y', '--summary', action='store_true',
help="Only show the total data size.")
parser.add_argument('--type', default='dDbB',
parser.add_argument(
'--nm-types',
default=NM_TYPES,
help="Type of symbols to report, this uses the same single-character "
"type-names emitted by nm. Defaults to %(default)r.")
parser.add_argument('--nm-tool', default=['nm'], type=lambda x: x.split(),
help="Path to the nm tool to use.")
parser.add_argument('--build-dir',
help="Specify the relative build directory. Used to map object files \
to the correct source files.")
sys.exit(main(**vars(parser.parse_args())))
"type-names emitted by nm. Defaults to %r." % NM_TYPES)
parser.add_argument(
'--nm-path',
type=lambda x: x.split(),
default=NM_PATH,
help="Path to the nm executable, may include flags. "
"Defaults to %r." % NM_PATH)
parser.add_argument(
'--objdump-path',
type=lambda x: x.split(),
default=OBJDUMP_PATH,
help="Path to the objdump executable, may include flags. "
"Defaults to %r." % OBJDUMP_PATH)
sys.exit(main(**{k: v
for k, v in vars(parser.parse_intermixed_args()).items()
if v is not None}))