test/gas2nasm.py

   1 #!/usr/bin/env python -tt
   2 # -*- python -*-
   3 # Convert gas testsuite file to NASM test asm file
   4 # usage >
   5 # python gas2nasm.py -i input_gas_file -o output_nasm_file -b bits
   6 # e.g. python gas2nasm.py -i x86-64-avx512f-intel.d -o avx512f.asm -b 64
   7
   8 import sys
   9 import os
  10 import optparse
  11 import re
  12
  13 def setup():
  14     parser = optparse.OptionParser()
  15     parser.add_option('-i', dest='input', action='store',
  16             default="",
  17             help='Name for input gas testsuite file.')
  18     parser.add_option('-o', dest='output', action='store',
  19             default="",
  20             help='Name for output NASM test asm file.')
  21     parser.add_option('-b', dest='bits', action='store',
  22             default="",
  23             help='Bits for output ASM file.')
  24     parser.add_option('-r', dest='raw_output', action='store',
  25             default="",
  26             help='Name for raw output bytes in text')
  27     (options, args) =  parser.parse_args()
  28     return options
  29
  30 def read(options):
  31     with open(options.input, 'rb') as f:
  32         recs = []
  33         for line in f:
  34             if line[0] == '[':
  35                 d = []
  36                 strr = line[16:].partition('   ')
  37                 if strr[1] == '':
  38                     strr = line[16:].partition('\t')
  39                 l = strr[0].strip()
  40                 r = strr[2].strip()
  41                 d.append(l)
  42                 d.append(r)
  43                 recs.append(d)
  44     return recs
  45
  46 def commas(recs):
  47     replace_tbl = {' PTR':'', '\\':'', 'MM':'', '{':'\{', '}':'\}', 'XWORD':'OWORD'}
  48     reccommas = []
  49     for insn in recs:
  50         new = []
  51         byte = '0x' + insn[0].replace(' ', ', 0x')
  52         for rep in replace_tbl.keys():
  53             insn[1] = insn[1].replace(rep, replace_tbl[rep])
  54         mnemonic = insn[1]
  55
  56         # gas size specifier for gather and scatter insturctions seems wrong. just remove them.
  57         if 'gather' in insn[1] or 'scatter' in insn[1]:
  58             mnemonic = mnemonic.replace('ZWORD', '')
  59
  60         new.append(byte)
  61         new.append(mnemonic)
  62         reccommas.append(new)
  63     return reccommas
  64
  65 # The spaces reserved here can be adjusted according to the output string length.
  66 # maxlen printed out at the end of the process will give a hint for it.
  67 outstrfmt = "testcase\t{ %-70s }, { %-60s }\n"
  68
  69 macro = "%macro testcase 2\n %ifdef BIN\n  db %1\n %endif\n %ifdef SRC\n  %2\n %endif\n%endmacro\n\n\n"
  70
  71 def write(data, options):
  72     if options.output:
  73         with open(options.output, 'wb') as out:
  74             out.write(macro)
  75             if options.bits:
  76                 out.write('bits ' + options.bits + '\n\n')
  77             for insn in data:
  78                 outstr = outstrfmt % tuple(insn)
  79                 out.write(outstr)
  80
  81 def write_rawbytes(data, options):
  82     if options.raw_output:
  83         with open(options.raw_output, 'wb') as out:
  84             for insn in data:
  85                 out.write(insn[0] + '\n')
  86
  87 if __name__ == "__main__":
  88     options = setup()
  89     recs = read(options)
  90
  91     write_rawbytes(recs, options)
  92
  93     recs = commas(recs)
  94
  95     write(recs, options)
  96
  97     maxlen = [0,0,0,0,0,0,0,0]
  98     for insn in recs:
  99 #print insn[0] + '\t<-\t' + insn[1]
 100         print outstrfmt[:-1] % tuple(insn)
 101         for i, strstr in enumerate(insn):
 102             if maxlen[i] < len(strstr): maxlen[i] = len(strstr)
 103
 104     print maxlen