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xNBA/contrib/errcode/build_errcodedb.py
Michael Brown 8406115834 [build] Rename gPXE to iPXE
Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain.  Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.

Also update README, LOG and COPYRIGHTS to remove obsolete information.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
2010-04-19 23:43:39 +01:00

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/ipxe/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))