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364b39edfb
The .listfile pragma and the -l command line option will select the output file for the listing.
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
"""The Ophis program lister
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When displaying an assembled binary for human inspection, it is
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traditional to mix binary with reconstructed instructions that
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have all arguments precomputed. This class manages that."""
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# Copyright 2002-2012 Michael C. Martin and additional contributors.
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# You may use, modify, and distribute this file under the MIT
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# license: See README for details.
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import sys
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class Listing(object):
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"""Encapsulates the program listing. Accepts fully formatted
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instruction strings, or batches of data bytes. Batches of data
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bytes are assumed to be contiguous unless a divider is explicitly
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requested."""
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def __init__(self, fname):
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self.listing = [(0, [])]
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self.filename = fname
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def listInstruction(self, inst):
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"Add a preformatted instruction list to the listing."
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self.listing.append(inst)
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def listDivider(self, newpc):
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"Indicate that the next data block will begin at the given PC."
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self.listing.append((newpc, []))
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def listData(self, vals, pc):
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"""Add a batch of data to the listing. If this starts a new
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batch of data, begin that batch at the listed PC."""
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if type(self.listing[-1]) is not tuple:
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self.listing.append((pc, []))
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self.listing[-1][1].extend(vals)
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def dump(self):
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if self.filename == "-":
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out = sys.stdout
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else:
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out = file(self.filename, "w")
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for x in self.listing:
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if type(x) is str:
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print>>out, x
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elif type(x) is tuple:
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i = 0
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pc = x[0]
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while True:
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row = x[1][i:i + 16]
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if row == []:
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break
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dataline = " %04X " % (pc + i)
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dataline += (" %02X" * len(row)) % tuple(row)
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charline = ""
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for c in row:
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if c < 31 or c > 127:
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charline += "."
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else:
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charline += chr(c)
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print>>out, "%-54s |%-16s|" % (dataline, charline)
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i += 16
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if self.filename != "-":
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out.close()
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class NullLister(object):
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"A dummy Lister that actually does nothing."
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def listInstruction(self, inst):
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pass
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def listDivider(self, newpc):
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pass
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def listData(self, vals, pc):
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pass
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def dump(self):
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pass
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