100 lines
2.5 KiB
Python
100 lines
2.5 KiB
Python
# quick hack:
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# grabs data from XML file describing opcodes from http://ref.x86asm.net
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# then autocomments the cpux86 emulator code
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#
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# (super brittle hack)
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#
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from BeautifulSoup import BeautifulStoneSoup #thank you soup, fuck XML parsers
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import json, re
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#
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# Let me reiterate how much I despise scraping data from XML
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#
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infile = open("x86opcodes.xml","r").read()
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soup=BeautifulStoneSoup(infile)
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onesies=soup.find('one-byte').findAll('pri_opcd')
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twosies=soup.find('two-byte').findAll('pri_opcd')
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def hexRepOfOp(op):
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i=int(op['value'],16)
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if i < 16:
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return "0x0"+hex(i)[2:]
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else:
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return "0x" +hex(i)[2:]
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def mnem(op):
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res = op.find('mnem')
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if res:
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return res.string
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else:
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return ""
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def src(op):
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res = op.find('syntax').find('src')
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if res:
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return res.getText()
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else:
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return ""
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def dst(op):
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res = op.find('syntax').find('dst')
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if res:
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return res.getText()
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else:
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return ""
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def note(op):
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res = op.find('note').find('brief')
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if res:
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return res.getText()
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else:
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return ""
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def opstr(op):
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return mnem(op)+" "+src(op)+" "+dst(op)+" "+note(op)
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onedict = {}
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for op in onesies:
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onedict[hexRepOfOp(op)] = opstr(op)
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twodict = {}
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for op in twosies:
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twodict[hexRepOfOp(op)] = opstr(op)
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# barf some temporaries just for reference later
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outfile=open("onebyte_dict.json",'w')
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json.dump(onedict,outfile)
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outfile.close()
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outfile=open("twobyte_dict.json",'w')
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json.dump(twodict,outfile)
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outfile.close()
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# now transform source file
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caseline = re.compile("(\s+case )(0x[0-9]+):.*")
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emulatorlines = open("cpux86-ta.js","r").readlines()
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newlines=[]
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for i,line in enumerate(emulatorlines):
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if i< 5662:
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newlines.append(line)
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if 5662<=i<7551: #one-byte instructions
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linematch=caseline.match(line)
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if linematch:
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try:
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newlines.append(linematch.group(1)+linematch.group(2)+"://"+onedict[linematch.group(2)]+"\n")
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except KeyError:
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newlines.append(line)
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else:
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newlines.append(line)
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if 7551<=i<8291: #two-byte instructions
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linematch=caseline.match(line)
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if linematch:
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try:
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newlines.append(linematch.group(1)+linematch.group(2)+"://"+twodict[linematch.group(2)]+"\n")
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except KeyError:
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newlines.append(line)
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else:
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newlines.append(line)
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if 8291<=i:
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newlines.append(line)
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outfile=open("cpux86-ta-auto-annotated.js",'w')
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outfile.writelines(newlines)
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outfile.close()
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