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import os, sys
import xam
from ivmdump import insnlist, insntable, stackpushes, chainable
from struct import unpack
IGNORE_INSNS = ('assertdepth', 'dynamicfreq')
def dump(data):
l = len(data)
p = 0
results = []
result = []
freq = 1
while p < l:
mode = insnlist[ord(data[p])]
if mode.opcode not in insntable:
break
p += mode.unpacksize + 1
if p > l:
break
args = mode.getargs(data, p-mode.unpacksize)
for insn in mode.insns:
if insn[0] in IGNORE_INSNS:
if insn[0] == 'dynamicfreq':
freq = args[0]
continue
a = len(insn)-1
if a:
txt = '%s(%s)' % (insn[0], ','.join(map(str,args[:a])))
del args[:a]
else:
txt = insn[0]
result.append(txt)
if mode.opcode not in chainable:
results.append((freq, result))
result = []
results.append((freq, result))
return results
def main(DIRECTORY):
filename = os.path.join(DIRECTORY, 'psyco.dump')
if not os.path.isfile(filename) and os.path.isfile(DIRECTORY):
filename = DIRECTORY
DIRECTORY = os.path.dirname(DIRECTORY)
outfilename = filename + '.ivm'
if os.path.isfile(filename):
codebufs = xam.readdump(filename)
f = open(outfilename, 'w')
for codebuf in codebufs:
if codebuf.data:
data, addr, next, key = codebuf.splitheader()
for freq, lst in dump(data):
if len(lst) > 1:
print >> f, 'psycodump(%d, [%s]).' % (freq,
', '.join(lst))
f.close()
elif not os.path.isfile(outfilename):
print >> sys.stderr, filename, "not found."
sys.exit(1)
else:
print >> sys.stderr, "reusing text dump from", outfilename
return outfilename
if __name__ == '__main__':
if len(sys.argv) <= 1:
print "Usage: python ivmextract.py <directory>"
print " psyco.dump is loaded from the <directory>."
sys.exit(2)
for dir in sys.argv[1:]:
print "'%s'." % main(dir)
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