Mercurial > repos > blastem
view analyze_olp.py @ 561:666adeba5a61
Save and restore guest address in the write function for a code memory chunk in the "slow" path for inconvenient host addresses. This fixes an intermittent crash on OSX in the code that checks whether the memory written may contain code
author | Mike Pavone <pavone@retrodev.com> |
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date | Mon, 23 Jun 2014 11:46:56 -0400 |
parents | be9c7b3e25ee |
children | b290343e5664 |
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#!/usr/bin/env python from zipfile import ZipFile from sys import exit, argv def detect_rise(last, sample, bit): mask = 1 << bit return (not last & mask) and (sample & mask) def detect_fall(last, sample, bit): mask = 1 << bit return (last & mask) and (not sample & mask) def detect_high(sample, bit): mask = 1 << bit return sample & mask def detect_low(sample, bit): mask = 1 << bit return not sample & mask def analyze_delays(chanmap, datafile): m68k_clk = chanmap['M68K CLK'] m_as = chanmap['!AS'] last = False clks = 0 as_start = 0 for line in datafile.readlines(): line = line.strip() if line and not line.startswith(';'): sample,_,num = line.partition('@') sample = int(sample, 16) if not (last is False): if detect_rise(last, sample, m68k_clk): clks = clks + 1 if detect_rise(last, sample, m_as): as_clks = clks - as_start if as_clks > 2: print '!AS held for', as_clks, 'cycles starting (delay of ' + str(as_clks - 2) + ') at', as_start, 'and ending at', clks elif detect_fall(last, sample, m_as): as_start = clks last = sample def main(args): if len(args) < 2: print 'Usage: analyze_olp.py filename' exit(1) olpfile = ZipFile(args[1], "r") channelfile = olpfile.open('channel.labels') channels = [line.strip() for line in channelfile.readlines()] channelfile.close() chanmap = {} for i in xrange(0, len(channels)): chanmap[channels[i]] = i datafile = olpfile.open('data.ols') analyze_delays(chanmap, datafile) if __name__ == '__main__': main(argv)