mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-12 06:16:29 +00:00
94 lines
3.0 KiB
Python
Executable File
94 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# Copyright (C) 2008 Stefan Hajnoczi <stefanha@gmail.com>.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License as
|
|
# published by the Free Software Foundation; either version 2 of the
|
|
# License, or any later version.
|
|
#
|
|
# 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, write to the Free Software
|
|
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
import sys
|
|
import re
|
|
|
|
pxenv_status_files = ('../../src/include/errno.h', )
|
|
errfile_files = ('../../src/include/gpxe/errfile.h',
|
|
'../../src/arch/i386/include/bits/errfile.h')
|
|
posix_errno_files = ('../../src/include/errno.h', )
|
|
|
|
PXENV_STATUS_RE = re.compile(r'^#define\s+(PXENV_STATUS_[^\s]+)\s+(.+)$', re.M)
|
|
ERRFILE_RE = re.compile(r'^#define\s+(ERRFILE_[^\s]+)\s+(.+)$', re.M)
|
|
POSIX_ERRNO_RE = re.compile(r'^#define\s+(E[A-Z0-9]+)\s+(?:\\\n)?.*(0x[0-9a-f]+).*$', re.M)
|
|
|
|
def err(msg):
|
|
sys.stderr.write('%s: %s\n' % (sys.argv[0], msg))
|
|
sys.exit(1)
|
|
|
|
def to_pxenv_status(errno):
|
|
return errno & 0xff
|
|
|
|
def to_errfile(errno):
|
|
return (errno >> 13) & 0x7ff
|
|
|
|
def to_posix_errno(errno):
|
|
return (errno >> 24) & 0x7f
|
|
|
|
def load_header_file(filename, regexp):
|
|
defines = {}
|
|
data = open(filename, 'r').read()
|
|
for m in regexp.finditer(data):
|
|
key, val = m.groups()
|
|
defines[key] = val
|
|
return defines
|
|
|
|
def evaluate(defines, expr):
|
|
pyexpr = ''
|
|
for token in expr.split():
|
|
if token in '()':
|
|
pass
|
|
elif token.startswith('/*') or token.startswith('//'):
|
|
break
|
|
elif token.startswith('0x') or token == '|':
|
|
pyexpr += token
|
|
else:
|
|
if token in defines:
|
|
pyexpr += '0x%x' % defines[token]
|
|
else:
|
|
return -1
|
|
if not re.match(r'^[0-9a-zA-Z_|]+$', pyexpr):
|
|
err('invalid expression')
|
|
return eval(pyexpr)
|
|
|
|
def build(filenames, regexp, selector):
|
|
unevaluated = {}
|
|
for filename in filenames:
|
|
unevaluated.update(load_header_file(filename, regexp))
|
|
|
|
evaluated = {}
|
|
changed = True
|
|
while changed:
|
|
changed = False
|
|
for key in list(unevaluated.keys()):
|
|
val = evaluate(evaluated, unevaluated[key])
|
|
if val != -1:
|
|
del unevaluated[key]
|
|
evaluated[key] = val
|
|
changed = True
|
|
if unevaluated:
|
|
err('unable to evaluate all #defines')
|
|
|
|
lookup = {}
|
|
for key, val in evaluated.iteritems():
|
|
lookup[selector(val)] = key
|
|
return lookup
|
|
|
|
print 'pxenv_status =', repr(build(pxenv_status_files, PXENV_STATUS_RE, to_pxenv_status))
|
|
print 'errfile =', repr(build(errfile_files, ERRFILE_RE, to_errfile))
|
|
print 'posix_errno =', repr(build(posix_errno_files, POSIX_ERRNO_RE, to_posix_errno))
|