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 - 2013, 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 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
  30 # Version and Copyright
  31 __version_number__ = ("0.10" + " " + gBUILD_VERSION)
  32 __version__ = "%prog Version " + __version_number__
  33 __copyright__ = "Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved."
  34
  35 #======================================  Internal Libraries ========================================
  36
  37 #============================================== Code ===============================================
  38 secRe = re.compile('^([\da-fA-F]+):([\da-fA-F]+) +([\da-fA-F]+)[Hh]? +([.\w\$]+) +(\w+)', re.UNICODE)
  39 symRe = re.compile('^([\da-fA-F]+):([\da-fA-F]+) +([\.:\\\\\w\?@\$]+) +([\da-fA-F]+)', re.UNICODE)
  40
  41 def parsePcdInfoFromMapFile(mapfilepath, efifilepath):
  42     """ Parse map file to get binary patch pcd information
  43     @param path    Map file absolution path
  44
  45     @return a list which element hold (PcdName, Offset, SectionName)
  46     """
  47     lines = []
  48     try:
  49         f = open(mapfilepath, 'r')
  50         lines = f.readlines()
  51         f.close()
  52     except:
  53         return None
  54
  55     if len(lines) == 0: return None
  56     firstline = lines[0].strip()
  57     if (firstline.startswith("Archive member included ") and
  58         firstline.endswith(" file (symbol)")):
  59         return _parseForGCC(lines, efifilepath)
  60     return _parseGeneral(lines, efifilepath)
  61
  62 def _parseForGCC(lines, efifilepath):
  63     """ Parse map file generated by GCC linker """
  64     status = 0
  65     imageBase = -1
  66     sections = []
  67     bpcds = []
  68     for line in lines:
  69         line = line.strip()
  70         # status machine transection
  71         if status == 0 and line == "Memory Configuration":
  72             status = 1
  73             continue
  74         elif status == 1 and line == 'Linker script and memory map':
  75             status = 2
  76             continue
  77         elif status ==2 and line == 'START GROUP':
  78             status = 3
  79             continue
  80
  81         # status handler
  82         if status == 2:
  83             m = re.match('^([\w_\.]+) +([\da-fA-Fx]+) +([\da-fA-Fx]+)$', line)
  84             if m != None:
  85                 sections.append(m.groups(0))
  86         if status == 2:
  87             m = re.match("^([\da-fA-Fx]+) +[_]+gPcd_BinaryPatch_([\w_\d]+)$", line)
  88             if m != None:
  89                 bpcds.append((m.groups(0)[1], int(m.groups(0)[0], 16) , int(sections[-1][1], 16), sections[-1][0]))
  90
  91     # get section information from efi file
  92     efisecs = PeImageClass(efifilepath).SectionHeaderList
  93     if efisecs == None or len(efisecs) == 0:
  94         return None
  95     #redirection
  96     redirection = 0
  97     for efisec in efisecs:
  98         for section in sections:
  99             if section[0].strip() == efisec[0].strip() and section[0].strip() == '.text':
 100                 redirection = int(section[1], 16) - efisec[1]
 101     pcds = []
 102     for pcd in bpcds:
 103         for efisec in efisecs:
 104             if pcd[1] >= efisec[1] and pcd[1] < efisec[1]+efisec[3]:
 105                 #assert efisec[0].strip() == pcd[3].strip() and efisec[1] + redirection == pcd[2], "There are some differences between map file and efi file"
 106                 pcds.append([pcd[0], efisec[2] + pcd[1] - efisec[1] - redirection, efisec[0]])
 107     return pcds
 108
 109 def _parseGeneral(lines, efifilepath):
 110     """ For MSFT, ICC, EBC
 111     @param lines    line array for map file
 112
 113     @return a list which element hold (PcdName, Offset, SectionName)
 114     """
 115     status = 0    #0 - beginning of file; 1 - PE section definition; 2 - symbol table
 116     secs  = []    # key = section name
 117     bPcds = []
 118
 119
 120     for line in lines:
 121         line = line.strip()
 122         if re.match("^Start[' ']+Length[' ']+Name[' ']+Class", line):
 123             status = 1
 124             continue
 125         if re.match("^Address[' ']+Publics by Value[' ']+Rva\+Base", line):
 126             status = 2
 127             continue
 128         if re.match("^entry point at", line):
 129             status = 3
 130             continue
 131         if status == 1 and len(line) != 0:
 132             m =  secRe.match(line)
 133             assert m != None, "Fail to parse the section in map file , line is %s" % line
 134             sec_no, sec_start, sec_length, sec_name, sec_class = m.groups(0)
 135             secs.append([int(sec_no, 16), int(sec_start, 16), int(sec_length, 16), sec_name, sec_class])
 136         if status == 2 and len(line) != 0:
 137             m = symRe.match(line)
 138             assert m != None, "Fail to parse the symbol in map file, line is %s" % line
 139             sec_no, sym_offset, sym_name, vir_addr = m.groups(0)
 140             sec_no     = int(sec_no,     16)
 141             sym_offset = int(sym_offset, 16)
 142             vir_addr   = int(vir_addr,   16)
 143             m2 = re.match('^[_]+gPcd_BinaryPatch_([\w]+)', sym_name)
 144             if m2 != None:
 145                 # fond a binary pcd entry in map file
 146                 for sec in secs:
 147                     if sec[0] == sec_no and (sym_offset >= sec[1] and sym_offset < sec[1] + sec[2]):
 148                         bPcds.append([m2.groups(0)[0], sec[3], sym_offset, vir_addr, sec_no])
 149
 150     if len(bPcds) == 0: return None
 151
 152     # get section information from efi file
 153     efisecs = PeImageClass(efifilepath).SectionHeaderList
 154     if efisecs == None or len(efisecs) == 0:
 155         return None
 156
 157     pcds = []
 158     for pcd in bPcds:
 159         index = 0
 160         for efisec in efisecs:
 161             index = index + 1
 162             if pcd[1].strip() == efisec[0].strip():
 163                 pcds.append([pcd[0], efisec[2] + pcd[2], efisec[0]])
 164             elif pcd[4] == index:
 165                 pcds.append([pcd[0], efisec[2] + pcd[2], efisec[0]])
 166     return pcds
 167
 168 def generatePcdTable(list, pcdpath):
 169     try:
 170         f = open(pcdpath, 'w')
 171     except:
 172         pass
 173
 174     f.write('PCD Name                       Offset    Section Name\r\n')
 175
 176     for pcditem in list:
 177         f.write('%-30s 0x%-08X %-6s\r\n' % (pcditem[0], pcditem[1], pcditem[2]))
 178     f.close()
 179
 180     #print 'Success to generate Binary Patch PCD table at %s!' % pcdpath
 181
 182 if __name__ == '__main__':
 183     UsageString = "%prog -m <MapFile> -e <EfiFile> -o <OutFile>"
 184     AdditionalNotes = "\nPCD table is generated in file name with .BinaryPcdTable.txt postfix"
 185     parser = optparse.OptionParser(description=__copyright__, version=__version__, usage=UsageString)
 186     parser.add_option('-m', '--mapfile', action='store', dest='mapfile',
 187                       help='Absolute path of module map file.')
 188     parser.add_option('-e', '--efifile', action='store', dest='efifile',
 189                       help='Absolute path of EFI binary file.')
 190     parser.add_option('-o', '--outputfile', action='store', dest='outfile',
 191                       help='Absolute path of output file to store the got patchable PCD table.')
 192
 193     (options, args) = parser.parse_args()
 194
 195     if options.mapfile == None or options.efifile == None:
 196         print parser.get_usage()
 197     elif os.path.exists(options.mapfile) and os.path.exists(options.efifile):
 198         list = parsePcdInfoFromMapFile(options.mapfile, options.efifile)
 199         if list != None:
 200             if options.outfile != None:
 201                 generatePcdTable(list, options.outfile)
 202             else:
 203                 generatePcdTable(list, options.mapfile.replace('.map', '.BinaryPcdTable.txt'))
 204         else:
 205             print 'Fail to generate Patch PCD Table based on map file and efi file'
 206     else:
 207         print 'Fail to generate Patch PCD Table for fail to find map file or efi file!'