8406115834
Access to the gpxe.org and etherboot.org domains and associated resources has been revoked by the registrant of the domain.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>
94 lines
3.0 KiB
Python
Executable File
94 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (C) 2008 Stefan Hajnoczi <stefanha@gmail.com>.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of the
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# License, or any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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import sys
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import re
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pxenv_status_files = ('../../src/include/errno.h', )
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errfile_files = ('../../src/include/ipxe/errfile.h',
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'../../src/arch/i386/include/bits/errfile.h')
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posix_errno_files = ('../../src/include/errno.h', )
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PXENV_STATUS_RE = re.compile(r'^#define\s+(PXENV_STATUS_[^\s]+)\s+(.+)$', re.M)
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ERRFILE_RE = re.compile(r'^#define\s+(ERRFILE_[^\s]+)\s+(.+)$', re.M)
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POSIX_ERRNO_RE = re.compile(r'^#define\s+(E[A-Z0-9]+)\s+(?:\\\n)?.*(0x[0-9a-f]+).*$', re.M)
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def err(msg):
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sys.stderr.write('%s: %s\n' % (sys.argv[0], msg))
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sys.exit(1)
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def to_pxenv_status(errno):
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return errno & 0xff
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def to_errfile(errno):
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return (errno >> 13) & 0x7ff
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def to_posix_errno(errno):
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return (errno >> 24) & 0x7f
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def load_header_file(filename, regexp):
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defines = {}
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data = open(filename, 'r').read()
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for m in regexp.finditer(data):
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key, val = m.groups()
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defines[key] = val
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return defines
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def evaluate(defines, expr):
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pyexpr = ''
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for token in expr.split():
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if token in '()':
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pass
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elif token.startswith('/*') or token.startswith('//'):
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break
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elif token.startswith('0x') or token == '|':
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pyexpr += token
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else:
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if token in defines:
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pyexpr += '0x%x' % defines[token]
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else:
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return -1
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if not re.match(r'^[0-9a-zA-Z_|]+$', pyexpr):
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err('invalid expression')
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return eval(pyexpr)
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def build(filenames, regexp, selector):
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unevaluated = {}
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for filename in filenames:
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unevaluated.update(load_header_file(filename, regexp))
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evaluated = {}
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changed = True
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while changed:
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changed = False
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for key in list(unevaluated.keys()):
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val = evaluate(evaluated, unevaluated[key])
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if val != -1:
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del unevaluated[key]
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evaluated[key] = val
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changed = True
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if unevaluated:
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err('unable to evaluate all #defines')
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lookup = {}
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for key, val in evaluated.iteritems():
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lookup[selector(val)] = key
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return lookup
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print 'pxenv_status =', repr(build(pxenv_status_files, PXENV_STATUS_RE, to_pxenv_status))
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print 'errfile =', repr(build(errfile_files, ERRFILE_RE, to_errfile))
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print 'posix_errno =', repr(build(posix_errno_files, POSIX_ERRNO_RE, to_posix_errno))
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