import struct
import sys
+import StringIO
class Reader:
def __init__(self, path):
if path == '-':
- self.file = sys.stdin
+ # Snarf all the data so we can seek.
+ self.file = StringIO.StringIO(sys.stdin.read())
else:
self.file = open(path,'rb')
self.isLSB = None
- self.pos = 0
+
+ self.string_table = None
def setLSB(self, isLSB):
self.isLSB = bool(isLSB)
def tell(self):
- return self.pos
+ return self.file.tell()
+
+ def seek(self, pos):
+ self.file.seek(pos)
def read(self, N):
data = self.file.read(N)
- self.pos += len(data)
if len(data) != N:
raise ValueError,"Out of data!"
return data
+ def read8(self):
+ return ord(self.read(1))
+
+ def read16(self):
+ return struct.unpack('><'[self.isLSB] + 'H', self.read(2))[0]
+
def read32(self):
- return struct.unpack('><'[self.isLSB] + 'I', self.read(4))[0]
+ # Force to 32-bit, if possible; otherwise these might be long ints on a
+ # big-endian platform. FIXME: Why???
+ Value = struct.unpack('><'[self.isLSB] + 'I', self.read(4))[0]
+ return int(Value)
+
+ def registerStringTable(self, strings):
+ if self.string_table is not None:
+ raise ValueError,"%s: warning: multiple string tables" % sys.argv[0]
+
+ self.string_table = strings
+
+ def getString(self, index):
+ if self.string_table is None:
+ raise ValueError,"%s: warning: no string table registered" % sys.argv[0]
+
+ end = self.string_table.index('\x00', index)
+ return self.string_table[index:end]
def dumpmacho(path, opts):
f = Reader(path)
print "])"
if f.tell() - start != loadCommandsSize:
- raise ValueError,"%s: warning: invalid load commands size: %r" % (sys.argv, loadCommandsSize)
+ raise ValueError,"%s: warning: invalid load commands size: %r" % (sys.argv[0], loadCommandsSize)
def dumpLoadCommand(f, i, opts):
start = f.tell()
dumpSymtabCommand(f, opts)
elif cmd == 11:
dumpDysymtabCommand(f, opts)
+ elif cmd == 27:
+ import uuid
+ print " ('uuid', %s)" % uuid.UUID(bytes=f.read(16))
else:
print >>sys.stderr,"%s: warning: unknown load command: %r" % (sys.argv[0], cmd)
f.read(cmdSize - 8)
print " ),"
if f.tell() - start != cmdSize:
- raise ValueError,"%s: warning: invalid load command size: %r" % (sys.argv, cmdSize)
+ raise ValueError,"%s: warning: invalid load command size: %r" % (sys.argv[0], cmdSize)
def dumpSegmentLoadCommand32(f, opts):
print " ('segment_name', %r)" % f.read(16)
print " ])"
def dumpSymtabCommand(f, opts):
- print " ('symoff', %r)" % f.read32()
- print " ('nsyms', %r)" % f.read32()
- print " ('stroff', %r)" % f.read32()
- print " ('strsize', %r)" % f.read32()
+ symoff = f.read32()
+ print " ('symoff', %r)" % symoff
+ nsyms = f.read32()
+ print " ('nsyms', %r)" % nsyms
+ stroff = f.read32()
+ print " ('stroff', %r)" % stroff
+ strsize = f.read32()
+ print " ('strsize', %r)" % strsize
+
+ prev_pos = f.tell()
+
+ f.seek(stroff)
+ string_data = f.read(strsize)
+ print " ('_string_data', %r)" % string_data
+
+ f.registerStringTable(string_data)
+
+ f.seek(symoff)
+ print " ('_symbols', ["
+ for i in range(nsyms):
+ dumpNlist32(f, i, opts)
+ print " ])"
+
+ f.seek(prev_pos)
+
+def dumpNlist32(f, i, opts):
+ print " # Symbol %r" % i
+ n_strx = f.read32()
+ print " (('n_strx', %r)" % n_strx
+ n_type = f.read8()
+ print " ('n_type', %#x)" % n_type
+ n_sect = f.read8()
+ print " ('n_sect', %r)" % n_sect
+ n_desc = f.read16()
+ print " ('n_desc', %r)" % n_desc
+ n_value = f.read32()
+ print " ('n_value', %r)" % n_value
+ print " ('_string', %r)" % f.getString(n_strx)
+ print " ),"
def dumpDysymtabCommand(f, opts):
print " ('ilocalsym', %r)" % f.read32()
print " ('nmodtab', %r)" % f.read32()
print " ('extrefsymoff', %r)" % f.read32()
print " ('nextrefsyms', %r)" % f.read32()
- print " ('indirectsymoff', %r)" % f.read32()
- print " ('nindirectsyms', %r)" % f.read32()
+ indirectsymoff = f.read32()
+ print " ('indirectsymoff', %r)" % indirectsymoff
+ nindirectsyms = f.read32()
+ print " ('nindirectsyms', %r)" % nindirectsyms
print " ('extreloff', %r)" % f.read32()
print " ('nextrel', %r)" % f.read32()
print " ('locreloff', %r)" % f.read32()
print " ('nlocrel', %r)" % f.read32()
+ prev_pos = f.tell()
+
+ f.seek(indirectsymoff)
+ print " ('_indirect_symbols', ["
+ for i in range(nindirectsyms):
+ print " # Indirect Symbol %r" % i
+ print " (('symbol_index', %#x),)," % f.read32()
+ print " ])"
+
+ f.seek(prev_pos)
+
def dumpSection32(f, i, opts):
print " # Section %r" % i
print " (('section_name', %r)" % f.read(16)
print " ('segment_name', %r)" % f.read(16)
print " ('address', %r)" % f.read32()
- print " ('size', %r)" % f.read32()
- print " ('offset', %r)" % f.read32()
- print " ('alignment', %r)" % f.read32()
- print " ('reloc_offset', %r)" % f.read32()
- print " ('num_reloc', %r)" % f.read32()
+ size = f.read32()
+ print " ('size', %r)" % size
+ offset = f.read32()
+ print " ('offset', %r)" % offset
+ print " ('alignment', %r)" % f.read32()
+ reloc_offset = f.read32()
+ print " ('reloc_offset', %r)" % reloc_offset
+ num_reloc = f.read32()
+ print " ('num_reloc', %r)" % num_reloc
print " ('flags', %#x)" % f.read32()
print " ('reserved1', %r)" % f.read32()
print " ('reserved2', %r)" % f.read32()
print " ),"
+
+ prev_pos = f.tell()
+
+ f.seek(reloc_offset)
+ print " ('_relocations', ["
+ for i in range(num_reloc):
+ print " # Relocation %r" % i
+ print " (('word-0', %#x)," % f.read32()
+ print " ('word-1', %#x))," % f.read32()
+ print " ])"
+
+ if opts.dumpSectionData:
+ f.seek(offset)
+ print " ('_section_data', %r)" % f.read(size)
+
+ f.seek(prev_pos)
def main():
from optparse import OptionParser, OptionGroup
parser = OptionParser("usage: %prog [options] {files}")
-
+ parser.add_option("", "--dump-section-data", dest="dumpSectionData",
+ help="Dump the contents of sections",
+ action="store_true", default=False)
(opts, args) = parser.parse_args()
if not args:
projects / oota-llvm.git / blobdiff