BaseTools/Source/Python/GenPatchPcdTable/GenPatchPcdTable.py

   1 ## @file
   2 # Generate PCD table for 'Patchable In Module' type PCD with given .map file.
   3 #    The Patch PCD table like:
   4 #
   5 #    PCD Name    Offset in binary
   6 #    ========    ================
   7 #
   8 # Copyright (c) 2008 - 2016, Intel Corporation. All rights reserved.<BR>
   9 # This program and the accompanying materials
  10 # are licensed and made available under the terms and conditions of the BSD License
  11 # which accompanies this distribution.  The full text of the license may be found at
  12 # http://opensource.org/licenses/bsd-license.php
  13 #
  14 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16 #
  17 #
  18
  19 #======================================  External Libraries ========================================
  20 import optparse
  21 import Common.LongFilePathOs as os
  22 import re
  23 import array
  24
  25 from Common.BuildToolError import *
  26 import Common.EdkLogger as EdkLogger
  27 from Common.Misc import PeImageClass
  28 from Common.BuildVersion import gBUILD_VERSION
  29 from Common.LongFilePathSupport import OpenLongFilePath as open
  30
  31 # Version and Copyright
  32 __version_number__ = ("0.10" + " " + gBUILD_VERSION)
  33 __version__ = "%prog Version " + __version_number__
  34 __copyright__ = "Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved."
  35
  36 #======================================  Internal Libraries ========================================
  37
  38 #============================================== Code ===============================================
  39 secRe = re.compile('^([\da-fA-F]+):([\da-fA-F]+) +([\da-fA-F]+)[Hh]? +([.\w\$]+) +(\w+)', re.UNICODE)
  40 symRe = re.compile('^([\da-fA-F]+):([\da-fA-F]+) +([\.\-:\\\\\w\?@\$<>]+) +([\da-fA-F]+)', re.UNICODE)
  41
  42 def parsePcdInfoFromMapFile(mapfilepath, efifilepath):
  43     """ Parse map file to get binary patch pcd information
  44     @param path    Map file absolution path
  45
  46     @return a list which element hold (PcdName, Offset, SectionName)
  47     """
  48     lines = []
  49     try:
  50         f = open(mapfilepath, 'r')
  51         lines = f.readlines()
  52         f.close()
  53     except:
  54         return None
  55
  56     if len(lines) == 0: return None
  57     firstline = lines[0].strip()
  58     if (firstline.startswith("Archive member included ") and
  59         firstline.endswith(" file (symbol)")):
  60         return _parseForGCC(lines, efifilepath)
  61     return _parseGeneral(lines, efifilepath)
  62
  63 def _parseForGCC(lines, efifilepath):
  64     """ Parse map file generated by GCC linker """
  65     status = 0
  66     imageBase = -1
  67     sections = []
  68     bpcds = []
  69     for line in lines:
  70         line = line.strip()
  71         # status machine transection
  72         if status == 0 and line == "Memory Configuration":
  73             status = 1
  74             continue
  75         elif status == 1 and line == 'Linker script and memory map':
  76             status = 2
  77             continue
  78         elif status ==2 and line == 'START GROUP':
  79             status = 3
  80             continue
  81
  82         # status handler
  83         if status == 2:
  84             m = re.match('^([\w_\.]+) +([\da-fA-Fx]+) +([\da-fA-Fx]+)$', line)
  85             if m != None:
  86                 sections.append(m.groups(0))
  87         if status == 2:
  88             m = re.match("^([\da-fA-Fx]+) +[_]+gPcd_BinaryPatch_([\w_\d]+)$", line)
  89             if m != None:
  90                 bpcds.append((m.groups(0)[1], int(m.groups(0)[0], 16) , int(sections[-1][1], 16), sections[-1][0]))
  91
  92     # get section information from efi file
  93     efisecs = PeImageClass(efifilepath).SectionHeaderList
  94     if efisecs == None or len(efisecs) == 0:
  95         return None
  96     #redirection
  97     redirection = 0
  98     for efisec in efisecs:
  99         for section in sections:
 100             if section[0].strip() == efisec[0].strip() and section[0].strip() == '.text':
 101                 redirection = int(section[1], 16) - efisec[1]
 102     pcds = []
 103     for pcd in bpcds:
 104         for efisec in efisecs:
 105             if pcd[1] >= efisec[1] and pcd[1] < efisec[1]+efisec[3]:
 106                 #assert efisec[0].strip() == pcd[3].strip() and efisec[1] + redirection == pcd[2], "There are some differences between map file and efi file"
 107                 pcds.append([pcd[0], efisec[2] + pcd[1] - efisec[1] - redirection, efisec[0]])
 108     return pcds
 109
 110 def _parseGeneral(lines, efifilepath):
 111     """ For MSFT, ICC, EBC
 112     @param lines    line array for map file
 113
 114     @return a list which element hold (PcdName, Offset, SectionName)
 115     """
 116     status = 0    #0 - beginning of file; 1 - PE section definition; 2 - symbol table
 117     secs = []    # key = section name
 118     bPcds = []
 119
 120
 121     for line in lines:
 122         line = line.strip()
 123         if re.match("^Start[' ']+Length[' ']+Name[' ']+Class", line):
 124             status = 1
 125             continue
 126         if re.match("^Address[' ']+Publics by Value[' ']+Rva\+Base", line):
 127             status = 2
 128             continue
 129         if re.match("^entry point at", line):
 130             status = 3
 131             continue
 132         if status == 1 and len(line) != 0:
 133             m = secRe.match(line)
 134             assert m != None, "Fail to parse the section in map file , line is %s" % line
 135             sec_no, sec_start, sec_length, sec_name, sec_class = m.groups(0)
 136             secs.append([int(sec_no, 16), int(sec_start, 16), int(sec_length, 16), sec_name, sec_class])
 137         if status == 2 and len(line) != 0:
 138             m = symRe.match(line)
 139             assert m != None, "Fail to parse the symbol in map file, line is %s" % line
 140             sec_no, sym_offset, sym_name, vir_addr = m.groups(0)
 141             sec_no = int(sec_no, 16)
 142             sym_offset = int(sym_offset, 16)
 143             vir_addr = int(vir_addr, 16)
 144             m2 = re.match('^[_]+gPcd_BinaryPatch_([\w]+)', sym_name)
 145             if m2 != None:
 146                 # fond a binary pcd entry in map file
 147                 for sec in secs:
 148                     if sec[0] == sec_no and (sym_offset >= sec[1] and sym_offset < sec[1] + sec[2]):
 149                         bPcds.append([m2.groups(0)[0], sec[3], sym_offset, vir_addr, sec_no])
 150
 151     if len(bPcds) == 0: return None
 152
 153     # get section information from efi file
 154     efisecs = PeImageClass(efifilepath).SectionHeaderList
 155     if efisecs == None or len(efisecs) == 0:
 156         return None
 157
 158     pcds = []
 159     for pcd in bPcds:
 160         index = 0
 161         for efisec in efisecs:
 162             index = index + 1
 163             if pcd[1].strip() == efisec[0].strip():
 164                 pcds.append([pcd[0], efisec[2] + pcd[2], efisec[0]])
 165             elif pcd[4] == index:
 166                 pcds.append([pcd[0], efisec[2] + pcd[2], efisec[0]])
 167     return pcds
 168
 169 def generatePcdTable(list, pcdpath):
 170     try:
 171         f = open(pcdpath, 'w')
 172     except:
 173         pass
 174
 175     f.write('PCD Name                       Offset    Section Name\r\n')
 176
 177     for pcditem in list:
 178         f.write('%-30s 0x%-08X %-6s\r\n' % (pcditem[0], pcditem[1], pcditem[2]))
 179     f.close()
 180
 181     #print 'Success to generate Binary Patch PCD table at %s!' % pcdpath
 182
 183 if __name__ == '__main__':
 184     UsageString = "%prog -m <MapFile> -e <EfiFile> -o <OutFile>"
 185     AdditionalNotes = "\nPCD table is generated in file name with .BinaryPcdTable.txt postfix"
 186     parser = optparse.OptionParser(description=__copyright__, version=__version__, usage=UsageString)
 187     parser.add_option('-m', '--mapfile', action='store', dest='mapfile',
 188                       help='Absolute path of module map file.')
 189     parser.add_option('-e', '--efifile', action='store', dest='efifile',
 190                       help='Absolute path of EFI binary file.')
 191     parser.add_option('-o', '--outputfile', action='store', dest='outfile',
 192                       help='Absolute path of output file to store the got patchable PCD table.')
 193
 194     (options, args) = parser.parse_args()
 195
 196     if options.mapfile == None or options.efifile == None:
 197         print parser.get_usage()
 198     elif os.path.exists(options.mapfile) and os.path.exists(options.efifile):
 199         list = parsePcdInfoFromMapFile(options.mapfile, options.efifile)
 200         if list != None:
 201             if options.outfile != None:
 202                 generatePcdTable(list, options.outfile)
 203             else:
 204                 generatePcdTable(list, options.mapfile.replace('.map', '.BinaryPcdTable.txt'))
 205         else:
 206             print 'Fail to generate Patch PCD Table based on map file and efi file'
 207     else:
 208         print 'Fail to generate Patch PCD Table for fail to find map file or efi file!'