1 | #!/usr/bin/env python
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2 | #
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3 | # Copyright (c) 2006 Ondrej Palkovsky
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4 | # All rights reserved.
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5 | #
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6 | # Redistribution and use in source and binary forms, with or without
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7 | # modification, are permitted provided that the following conditions
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8 | # are met:
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9 | #
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10 | # - Redistributions of source code must retain the above copyright
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11 | # notice, this list of conditions and the following disclaimer.
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12 | # - Redistributions in binary form must reproduce the above copyright
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13 | # notice, this list of conditions and the following disclaimer in the
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14 | # documentation and/or other materials provided with the distribution.
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15 | # - The name of the author may not be used to endorse or promote products
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16 | # derived from this software without specific prior written permission.
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17 | #
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18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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28 | #
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29 |
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30 | """
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31 | Create binary symbol map out of linker map file
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32 | """
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33 |
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34 | import sys
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35 | import struct
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36 | import re
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37 |
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38 | MAXSTRING = 63
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39 | symtabfmt = "<Q%ds" % (MAXSTRING + 1)
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40 |
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41 | funcline = re.compile(r'([0-9a-f]+)\s+[lg]\s+.\s+\.text\s+([0-9a-f]+)\s+(.*)$')
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42 | bssline = re.compile(r'([0-9a-f]+)\s+[lg]\s+[a-zA-Z]\s+\.bss\s+([0-9a-f]+)\s+(.*)$')
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43 | dataline = re.compile(r'([0-9a-f]+)\s+[lg]\s+[a-zA-Z]\s+\.data\s+([0-9a-f]+)\s+(.*)$')
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44 | fileexp = re.compile(r'([^\s]+):\s+file format')
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45 | startfile = re.compile(r'\.(text|bss|data)\s+(0x[0-9a-f]+)\s+0x[0-9a-f]+\s+(.*)$')
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46 |
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47 | def read_obdump(inp):
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48 | "Parse input"
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49 |
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50 | funcs = {}
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51 | data = {}
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52 | bss = {}
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53 | fname = ''
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54 |
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55 | for line in inp:
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56 | line = line.strip()
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57 | res = funcline.match(line)
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58 | if (res):
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59 | funcs.setdefault(fname, []).append((int(res.group(1), 16), res.group(3)))
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60 | continue
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61 |
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62 | res = bssline.match(line)
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63 | if (res):
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64 | start = int(res.group(1), 16)
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65 | end = int(res.group(2), 16)
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66 | if (end):
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67 | bss.setdefault(fname, []).append((start, res.group(3)))
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68 |
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69 | res = dataline.match(line)
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70 | if (res):
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71 | start = int(res.group(1), 16)
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72 | end = int(res.group(2), 16)
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73 | if (end):
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74 | data.setdefault(fname, []).append((start, res.group(3)))
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75 |
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76 | res = fileexp.match(line)
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77 | if (res):
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78 | fname = res.group(1)
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79 | continue
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80 |
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81 | return {'text' : funcs, 'bss' : bss, 'data' : data}
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82 |
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83 | def generate(kmapf, obmapf, out):
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84 | "Generate output file"
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85 |
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86 | obdump = read_obdump(obmapf)
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87 |
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88 | def key_sorter(x):
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89 | return x[0]
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90 |
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91 | for line in kmapf:
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92 | line = line.strip()
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93 | res = startfile.match(line)
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94 |
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95 | if ((res) and (res.group(3) in obdump[res.group(1)])):
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96 | offset = int(res.group(2), 16)
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97 | fname = res.group(3)
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98 | symbols = obdump[res.group(1)][fname]
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99 | symbols.sort(key = key_sorter)
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100 | for addr, symbol in symbols:
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101 | value = fname + ':' + symbol
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102 | value_bytes = value.encode('ascii')
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103 | data = struct.pack(symtabfmt, addr + offset, value_bytes[:MAXSTRING])
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104 | out.write(data)
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105 |
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106 | out.write(struct.pack(symtabfmt, 0, b''))
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107 |
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108 | def main():
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109 | if (len(sys.argv) != 4):
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110 | print("Usage: %s <kernel.map> <nm dump> <output.bin>" % sys.argv[0])
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111 | return 1
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112 |
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113 | kmapf = open(sys.argv[1], 'r')
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114 | obmapf = open(sys.argv[2], 'r')
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115 | out = open(sys.argv[3], 'wb')
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116 |
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117 | generate(kmapf, obmapf, out)
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118 |
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119 | kmapf.close()
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120 | obmapf.close()
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121 | out.close()
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122 |
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123 | if __name__ == '__main__':
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124 | sys.exit(main())
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