EmulatorPkg/Unix/lldbefi.py

   1 #!/usr/bin/python
   2
   3 #
   4 #  Copyright 2014 Apple Inc. All righes reserved.
   5 #
   6 #  SPDX-License-Identifier: BSD-2-Clause-Patent
   7 #
   8
   9 import lldb
  10 import os
  11 import uuid
  12 import string
  13 import commands
  14 import optparse
  15 import shlex
  16
  17 guid_dict = {}
  18
  19
  20 def EFI_GUID_TypeSummary (valobj,internal_dict):
  21     """ Type summary for EFI GUID, print C Name if known
  22     """
  23     # typedef struct {
  24     #   UINT32  Data1;
  25     #   UINT16  Data2;
  26     #   UINT16  Data3;
  27     #   UINT8   Data4[8];
  28     # } EFI_GUID;
  29     SBError = lldb.SBError()
  30
  31     data1_val = valobj.GetChildMemberWithName('Data1')
  32     data1 = data1_val.GetValueAsUnsigned(0)
  33     data2_val = valobj.GetChildMemberWithName('Data2')
  34     data2 = data2_val.GetValueAsUnsigned(0)
  35     data3_val = valobj.GetChildMemberWithName('Data3')
  36     data3 = data3_val.GetValueAsUnsigned(0)
  37     str = "%x-%x-%x-" % (data1, data2, data3)
  38
  39     data4_val = valobj.GetChildMemberWithName('Data4')
  40     for i in range (data4_val.num_children):
  41         if i == 2:
  42             str +='-'
  43         str += "%02x" % data4_val.GetChildAtIndex(i).data.GetUnsignedInt8(SBError, 0)
  44
  45     return guid_dict.get (str.upper(), '')
  46
  47
  48
  49 EFI_STATUS_Dict = {
  50     (0x8000000000000000 |  1): "Load Error",
  51     (0x8000000000000000 |  2): "Invalid Parameter",
  52     (0x8000000000000000 |  3): "Unsupported",
  53     (0x8000000000000000 |  4): "Bad Buffer Size",
  54     (0x8000000000000000 |  5): "Buffer Too Small",
  55     (0x8000000000000000 |  6): "Not Ready",
  56     (0x8000000000000000 |  7): "Device Error",
  57     (0x8000000000000000 |  8): "Write Protected",
  58     (0x8000000000000000 |  9): "Out of Resources",
  59     (0x8000000000000000 | 10): "Volume Corrupt",
  60     (0x8000000000000000 | 11): "Volume Full",
  61     (0x8000000000000000 | 12): "No Media",
  62     (0x8000000000000000 | 13): "Media changed",
  63     (0x8000000000000000 | 14): "Not Found",
  64     (0x8000000000000000 | 15): "Access Denied",
  65     (0x8000000000000000 | 16): "No Response",
  66     (0x8000000000000000 | 17): "No mapping",
  67     (0x8000000000000000 | 18): "Time out",
  68     (0x8000000000000000 | 19): "Not started",
  69     (0x8000000000000000 | 20): "Already started",
  70     (0x8000000000000000 | 21): "Aborted",
  71     (0x8000000000000000 | 22): "ICMP Error",
  72     (0x8000000000000000 | 23): "TFTP Error",
  73     (0x8000000000000000 | 24): "Protocol Error",
  74
  75                           0 : "Success",
  76                           1 : "Warning Unknown Glyph",
  77                           2 : "Warning Delete Failure",
  78                           3 : "Warning Write Failure",
  79                           4 : "Warning Buffer Too Small",
  80
  81     (0x80000000         |  1): "Load Error",
  82     (0x80000000         |  2): "Invalid Parameter",
  83     (0x80000000         |  3): "Unsupported",
  84     (0x80000000         |  4): "Bad Buffer Size",
  85     (0x80000000         |  5): "Buffer Too Small",
  86     (0x80000000         |  6): "Not Ready",
  87     (0x80000000         |  7): "Device Error",
  88     (0x80000000         |  8): "Write Protected",
  89     (0x80000000         |  9): "Out of Resources",
  90     (0x80000000         | 10): "Volume Corrupt",
  91     (0x80000000         | 11): "Volume Full",
  92     (0x80000000         | 12): "No Media",
  93     (0x80000000         | 13): "Media changed",
  94     (0x80000000         | 14): "Not Found",
  95     (0x80000000         | 15): "Access Denied",
  96     (0x80000000         | 16): "No Response",
  97     (0x80000000         | 17): "No mapping",
  98     (0x80000000         | 18): "Time out",
  99     (0x80000000         | 19): "Not started",
 100     (0x80000000         | 20): "Already started",
 101     (0x80000000         | 21): "Aborted",
 102     (0x80000000         | 22): "ICMP Error",
 103     (0x80000000         | 23): "TFTP Error",
 104     (0x80000000         | 24): "Protocol Error",
 105 }
 106
 107 def EFI_STATUS_TypeSummary (valobj,internal_dict):
 108   #
 109   # Return summary string for EFI_STATUS from dictionary
 110   #
 111   Status = valobj.GetValueAsUnsigned(0)
 112   return EFI_STATUS_Dict.get (Status, '')
 113
 114
 115 def EFI_TPL_TypeSummary (valobj,internal_dict):
 116   #
 117   # Return TPL values
 118   #
 119
 120   if valobj.TypeIsPointerType():
 121     return ""
 122
 123   Tpl = valobj.GetValueAsUnsigned(0)
 124   if   Tpl < 4:
 125     Str = "%d" % Tpl
 126   elif Tpl == 6:
 127     Str = "TPL_DRIVER (Obsolete Concept in edk2)"
 128   elif Tpl < 8:
 129     Str = "TPL_APPLICATION"
 130     if Tpl - 4 > 0:
 131       Str += " + " + "%d" % (Tpl - 4)
 132   elif Tpl < 16:
 133     Str = "TPL_CALLBACK"
 134     if Tpl - 8 > 0:
 135       Str += " + " + "%d" % (Tpl - 4)
 136   elif Tpl < 31:
 137     Str = "TPL_NOTIFY"
 138     if Tpl - 16 > 0:
 139       Str += " + " + "%d" % (Tpl - 4)
 140   elif Tpl == 31:
 141     Str = "TPL_HIGH_LEVEL"
 142   else:
 143     Str = "Invalid TPL"
 144
 145   return Str
 146
 147
 148 def CHAR16_TypeSummary (valobj,internal_dict):
 149   #
 150   # Display EFI CHAR16 'unsigned short' as string
 151   #
 152   SBError = lldb.SBError()
 153   Str = ''
 154   if valobj.TypeIsPointerType():
 155     if valobj.GetValueAsUnsigned () == 0:
 156       return "NULL"
 157
 158     # CHAR16 *   max string size 1024
 159     for i in range (1024):
 160       Char = valobj.GetPointeeData(i,1).GetUnsignedInt16(SBError, 0)
 161       if SBError.fail or Char == 0:
 162         break
 163       Str += unichr (Char)
 164     Str = 'L"' + Str + '"'
 165     return Str.encode ('utf-8', 'replace')
 166
 167   if valobj.num_children == 0:
 168     # CHAR16
 169     if chr (valobj.unsigned) in string.printable:
 170       Str = "L'" + unichr (valobj.unsigned) + "'"
 171       return Str.encode ('utf-8', 'replace')
 172   else:
 173     # CHAR16 []
 174     for i in range (valobj.num_children):
 175       Char = valobj.GetChildAtIndex(i).data.GetUnsignedInt16(SBError, 0)
 176       if Char == 0:
 177         break
 178       Str += unichr (Char)
 179     Str = 'L"' + Str + '"'
 180     return Str.encode ('utf-8', 'replace')
 181
 182   return Str
 183
 184 def CHAR8_TypeSummary (valobj,internal_dict):
 185   #
 186   # Display EFI CHAR8 'signed char' as string
 187   # unichr() is used as a junk string can produce an error message like this:
 188   # UnicodeEncodeError: 'ascii' codec can't encode character u'\x90' in position 1: ordinal not in range(128)
 189   #
 190   SBError = lldb.SBError()
 191   Str = ''
 192   if valobj.TypeIsPointerType():
 193     if valobj.GetValueAsUnsigned () == 0:
 194       return "NULL"
 195
 196     # CHAR8 *   max string size 1024
 197     for i in range (1024):
 198       Char = valobj.GetPointeeData(i,1).GetUnsignedInt8(SBError, 0)
 199       if SBError.fail or Char == 0:
 200         break
 201       Str += unichr (Char)
 202     Str = '"' + Str + '"'
 203     return Str.encode ('utf-8', 'replace')
 204
 205   if valobj.num_children == 0:
 206     # CHAR8
 207     if chr (valobj.unsigned) in string.printable:
 208       Str = '"' + unichr (valobj.unsigned)  + '"'
 209       return Str.encode ('utf-8', 'replace')
 210   else:
 211     # CHAR8 []
 212     for i in range (valobj.num_children):
 213       Char = valobj.GetChildAtIndex(i).data.GetUnsignedInt8(SBError, 0)
 214       if Char == 0:
 215         break
 216       Str += unichr (Char)
 217     Str = '"' + Str + '"'
 218     return Str.encode ('utf-8', 'replace')
 219
 220   return Str
 221
 222 device_path_dict = {
 223   (0x01, 0x01): "PCI_DEVICE_PATH",
 224   (0x01, 0x02): "PCCARD_DEVICE_PATH",
 225   (0x01, 0x03): "MEMMAP_DEVICE_PATH",
 226   (0x01, 0x04): "VENDOR_DEVICE_PATH",
 227   (0x01, 0x05): "CONTROLLER_DEVICE_PATH",
 228   (0x02, 0x01): "ACPI_HID_DEVICE_PATH",
 229   (0x02, 0x02): "ACPI_EXTENDED_HID_DEVICE_PATH",
 230   (0x02, 0x03): "ACPI_ADR_DEVICE_PATH",
 231   (0x03, 0x01): "ATAPI_DEVICE_PATH",
 232   (0x03, 0x12): "SATA_DEVICE_PATH",
 233   (0x03, 0x02): "SCSI_DEVICE_PATH",
 234   (0x03, 0x03): "FIBRECHANNEL_DEVICE_PATH",
 235   (0x03, 0x04): "F1394_DEVICE_PATH",
 236   (0x03, 0x05): "USB_DEVICE_PATH",
 237   (0x03, 0x0f): "USB_CLASS_DEVICE_PATH",
 238   (0x03, 0x10): "FW_SBP2_UNIT_LUN_DEVICE_PATH",
 239   (0x03, 0x11): "DEVICE_LOGICAL_UNIT_DEVICE_PATH",
 240   (0x03, 0x06): "I2O_DEVICE_PATH",
 241   (0x03, 0x0b): "MAC_ADDR_DEVICE_PATH",
 242   (0x03, 0x0c): "IPv4_DEVICE_PATH",
 243   (0x03, 0x09): "INFINIBAND_DEVICE_PATH",
 244   (0x03, 0x0e): "UART_DEVICE_PATH",
 245   (0x03, 0x0a): "VENDOR_DEVICE_PATH",
 246   (0x03, 0x13): "ISCSI_DEVICE_PATH",
 247   (0x04, 0x01): "HARDDRIVE_DEVICE_PATH",
 248   (0x04, 0x02): "CDROM_DEVICE_PATH",
 249   (0x04, 0x03): "VENDOR_DEVICE_PATH",
 250   (0x04, 0x04): "FILEPATH_DEVICE_PATH",
 251   (0x04, 0x05): "MEDIA_PROTOCOL_DEVICE_PATH",
 252   (0x05, 0x01): "BBS_BBS_DEVICE_PATH",
 253   (0x7F, 0xFF): "EFI_DEVICE_PATH_PROTOCOL",
 254   (0xFF, 0xFF): "EFI_DEVICE_PATH_PROTOCOL",
 255 }
 256
 257 def EFI_DEVICE_PATH_PROTOCOL_TypeSummary (valobj,internal_dict):
 258   #
 259   #
 260   #
 261   if valobj.TypeIsPointerType():
 262     # EFI_DEVICE_PATH_PROTOCOL *
 263     return ""
 264
 265   Str = ""
 266   if valobj.num_children == 3:
 267     # EFI_DEVICE_PATH_PROTOCOL
 268     Type    = valobj.GetChildMemberWithName('Type').unsigned
 269     SubType = valobj.GetChildMemberWithName('SubType').unsigned
 270     if (Type, SubType) in device_path_dict:
 271       TypeStr = device_path_dict[Type, SubType]
 272     else:
 273       TypeStr = ""
 274
 275     LenLow  = valobj.GetChildMemberWithName('Length').GetChildAtIndex(0).unsigned
 276     LenHigh = valobj.GetChildMemberWithName('Length').GetChildAtIndex(1).unsigned
 277     Len = LenLow + (LenHigh >> 8)
 278
 279     Address = long ("%d" % valobj.addr)
 280     if (Address == lldb.LLDB_INVALID_ADDRESS):
 281       # Need to reserach this, it seems to be the nested struct case
 282       ExprStr = ""
 283     elif (Type & 0x7f == 0x7f):
 284       ExprStr = "End Device Path" if SubType == 0xff else "End This Instance"
 285     else:
 286       ExprStr = "expr *(%s *)0x%08x" % (TypeStr, Address)
 287
 288     Str =  " {\n"
 289     Str += "   (UINT8) Type    = 0x%02x // %s\n" % (Type, "END" if (Type & 0x7f == 0x7f) else "")
 290     Str += "   (UINT8) SubType = 0x%02x // %s\n" % (SubType, ExprStr)
 291     Str += "   (UINT8 [2]) Length = { // 0x%04x (%d) bytes\n" % (Len, Len)
 292     Str += "     (UINT8) [0] = 0x%02x\n" % LenLow
 293     Str += "     (UINT8) [1] = 0x%02x\n" % LenHigh
 294     Str +=  "   }\n"
 295     if (Type & 0x7f == 0x7f) and (SubType == 0xff):
 296       pass
 297     elif ExprStr != "":
 298       NextNode = Address + Len
 299       Str += "// Next node 'expr *(EFI_DEVICE_PATH_PROTOCOL *)0x%08x'\n" % NextNode
 300
 301   return Str
 302
 303
 304
 305 def TypePrintFormating(debugger):
 306     #
 307     # Set the default print formating for EFI types in lldb.
 308     # seems lldb defaults to decimal.
 309     #
 310     category = debugger.GetDefaultCategory()
 311     FormatBool = lldb.SBTypeFormat(lldb.eFormatBoolean)
 312     category.AddTypeFormat(lldb.SBTypeNameSpecifier("BOOLEAN"), FormatBool)
 313
 314     FormatHex  = lldb.SBTypeFormat(lldb.eFormatHex)
 315     category.AddTypeFormat(lldb.SBTypeNameSpecifier("UINT64"), FormatHex)
 316     category.AddTypeFormat(lldb.SBTypeNameSpecifier("INT64"), FormatHex)
 317     category.AddTypeFormat(lldb.SBTypeNameSpecifier("UINT32"), FormatHex)
 318     category.AddTypeFormat(lldb.SBTypeNameSpecifier("INT32"), FormatHex)
 319     category.AddTypeFormat(lldb.SBTypeNameSpecifier("UINT16"), FormatHex)
 320     category.AddTypeFormat(lldb.SBTypeNameSpecifier("INT16"), FormatHex)
 321     category.AddTypeFormat(lldb.SBTypeNameSpecifier("UINT8"), FormatHex)
 322     category.AddTypeFormat(lldb.SBTypeNameSpecifier("INT8"), FormatHex)
 323     category.AddTypeFormat(lldb.SBTypeNameSpecifier("UINTN"), FormatHex)
 324     category.AddTypeFormat(lldb.SBTypeNameSpecifier("INTN"), FormatHex)
 325     category.AddTypeFormat(lldb.SBTypeNameSpecifier("CHAR8"), FormatHex)
 326     category.AddTypeFormat(lldb.SBTypeNameSpecifier("CHAR16"), FormatHex)
 327
 328     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_PHYSICAL_ADDRESS"), FormatHex)
 329     category.AddTypeFormat(lldb.SBTypeNameSpecifier("PHYSICAL_ADDRESS"), FormatHex)
 330     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_STATUS"), FormatHex)
 331     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_TPL"), FormatHex)
 332     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_LBA"), FormatHex)
 333     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_BOOT_MODE"), FormatHex)
 334     category.AddTypeFormat(lldb.SBTypeNameSpecifier("EFI_FV_FILETYPE"), FormatHex)
 335
 336     #
 337     # Smart type printing for EFI
 338     #
 339     debugger.HandleCommand("type summary add EFI_GUID --python-function lldbefi.EFI_GUID_TypeSummary")
 340     debugger.HandleCommand("type summary add EFI_STATUS --python-function lldbefi.EFI_STATUS_TypeSummary")
 341     debugger.HandleCommand("type summary add EFI_TPL --python-function lldbefi.EFI_TPL_TypeSummary")
 342     debugger.HandleCommand("type summary add EFI_DEVICE_PATH_PROTOCOL --python-function lldbefi.EFI_DEVICE_PATH_PROTOCOL_TypeSummary")
 343
 344     debugger.HandleCommand("type summary add CHAR16 --python-function lldbefi.CHAR16_TypeSummary")
 345     debugger.HandleCommand('type summary add --regex "CHAR16 \[[0-9]+\]" --python-function lldbefi.CHAR16_TypeSummary')
 346     debugger.HandleCommand("type summary add CHAR8 --python-function lldbefi.CHAR8_TypeSummary")
 347     debugger.HandleCommand('type summary add --regex "CHAR8 \[[0-9]+\]" --python-function lldbefi.CHAR8_TypeSummary')
 348
 349
 350 gEmulatorBreakWorkaroundNeeded = True
 351
 352 def LoadEmulatorEfiSymbols(frame, bp_loc , internal_dict):
 353     #
 354     # This is an lldb breakpoint script, and assumes the breakpoint is on a
 355     # function with the same prototype as SecGdbScriptBreak(). The
 356     # argument names are important as lldb looks them up.
 357     #
 358     # VOID
 359     # SecGdbScriptBreak (
 360     #   char                *FileName,
 361     #   int                 FileNameLength,
 362     #   long unsigned int   LoadAddress,
 363     #   int                 AddSymbolFlag
 364     #   )
 365     # {
 366     #   return;
 367     # }
 368     #
 369     # When the emulator loads a PE/COFF image, it calls the stub function with
 370     # the filename of the symbol file, the length of the FileName, the
 371     # load address and a flag to indicate if this is a load or unload operation
 372     #
 373     global gEmulatorBreakWorkaroundNeeded
 374
 375     if gEmulatorBreakWorkaroundNeeded:
 376         # turn off lldb debug prints on SIGALRM (EFI timer tick)
 377         frame.thread.process.target.debugger.HandleCommand("process handle SIGALRM -n false")
 378         gEmulatorBreakWorkaroundNeeded = False
 379
 380     # Convert C string to Python string
 381     Error = lldb.SBError()
 382     FileNamePtr = frame.FindVariable ("FileName").GetValueAsUnsigned()
 383     FileNameLen = frame.FindVariable ("FileNameLength").GetValueAsUnsigned()
 384     FileName = frame.thread.process.ReadCStringFromMemory (FileNamePtr, FileNameLen, Error)
 385     if not Error.Success():
 386         print "!ReadCStringFromMemory() did not find a %d byte C string at %x" % (FileNameLen, FileNamePtr)
 387         # make breakpoint command contiue
 388         frame.GetThread().GetProcess().Continue()
 389
 390     debugger = frame.thread.process.target.debugger
 391     if frame.FindVariable ("AddSymbolFlag").GetValueAsUnsigned() == 1:
 392         LoadAddress = frame.FindVariable ("LoadAddress").GetValueAsUnsigned()
 393
 394         debugger.HandleCommand ("target modules add  %s" % FileName)
 395         print "target modules load --slid 0x%x %s" % (LoadAddress, FileName)
 396         debugger.HandleCommand ("target modules load --slide 0x%x --file %s" % (LoadAddress, FileName))
 397     else:
 398         target = debugger.GetSelectedTarget()
 399         for SBModule in target.module_iter():
 400             ModuleName  = SBModule.GetFileSpec().GetDirectory() + '/'
 401             ModuleName += SBModule.GetFileSpec().GetFilename()
 402             if FileName == ModuleName or FileName == SBModule.GetFileSpec().GetFilename():
 403                 target.ClearModuleLoadAddress (SBModule)
 404                 if not target.RemoveModule (SBModule):
 405                     print "!lldb.target.RemoveModule (%s) FAILED" % SBModule
 406
 407     # make breakpoint command contiue
 408     frame.thread.process.Continue()
 409
 410 def GuidToCStructStr (guid, Name=False):
 411   #
 412   # Convert a 16-byte bytesarry (or bytearray compat object) to C guid string
 413   # { 0xB402621F, 0xA940, 0x1E4A, { 0x86, 0x6B, 0x4D, 0xC9, 0x16, 0x2B, 0x34, 0x7C } }
 414   #
 415   # Name=True means lookup name in GuidNameDict and us it if you find it
 416   #
 417
 418   if not isinstance (guid, bytearray):
 419     # convert guid object to UUID, and UUID to bytearray
 420     Uuid = uuid.UUID(guid)
 421     guid = bytearray (Uuid.bytes_le)
 422
 423   return "{ 0x%02.2X%02.2X%02.2X%02.2X, 0x%02.2X%02.2X, 0x%02.2X%02.2X, { 0x%02.2X, 0x%02.2X, 0x%02.2X, 0x%02.2X, 0x%02.2X, 0x%02.2X, 0x%02.2X, 0x%02.2X } }" % \
 424          (guid[3], guid[2], guid[1], guid[0], guid[5], guid[4], guid[7], guid[6], guid[8], guid[9], guid[10], guid[11], guid[12], guid[13], guid[14], guid[15])
 425
 426 def ParseGuidString(GuidStr):
 427   #
 428   # Error check and convert C Guid init to string
 429   # ParseGuidString("49152E77-1ADA-4764-B7A2-7AFEFED95E8B")
 430   # ParseGuidString("{ 0xBA24B391, 0x73FD, 0xC54C, { 0x9E, 0xAF, 0x0C, 0xA7, 0x8A, 0x35, 0x46, 0xD1 } }")
 431   #
 432
 433   if "{" in GuidStr                                                                                         :
 434     # convert C form "{ 0xBA24B391, 0x73FD, 0xC54C, { 0x9E, 0xAF, 0x0C, 0xA7, 0x8A, 0x35, 0x46, 0xD1 } }"
 435     # to string form BA24B391-73FD-C54C-9EAF-0CA78A3546D1
 436     # make a list of Hex numbers like: ['0xBA24B391', '0x73FD', '0xC54C', '0x9E', '0xAF', '0x0C', '0xA7', '0x8A', '0x35', '0x46', '0xD1']
 437     Hex = ''.join(x for x in GuidStr if x not in '{,}').split()
 438     Str = "%08X-%04X-%04X-%02.2X%02.2X-%02.2X%02.2X%02.2X%02.2X%02.2X%02.2X" % \
 439           (int(Hex[0], 0), int(Hex[1], 0), int(Hex[2], 0), int(Hex[3], 0), int(Hex[4], 0), \
 440            int(Hex[5], 0), int(Hex[6], 0), int(Hex[7], 0), int(Hex[8], 0), int(Hex[9], 0), int(Hex[10], 0))
 441   elif GuidStr.count('-') == 4:
 442     # validate "49152E77-1ADA-4764-B7A2-7AFEFED95E8B" form
 443     Check = "%s" % str(uuid.UUID(GuidStr)).upper()
 444     if GuidStr.upper() == Check:
 445       Str = GuidStr.upper()
 446     else:
 447       Ste = ""
 448   else:
 449     Str = ""
 450
 451   return Str
 452
 453
 454 def create_guid_options():
 455     usage = "usage: %prog [data]"
 456     description='''lookup EFI_GUID by CName, C struct, or GUID string and print out all three.
 457     '''
 458     parser = optparse.OptionParser(description=description, prog='guid',usage=usage)
 459     return parser
 460
 461 def efi_guid_command(debugger, command, result, dict):
 462     # Use the Shell Lexer to properly parse up command options just like a
 463     # shell would
 464     command_args = shlex.split(command)
 465     parser = create_guid_options()
 466     try:
 467         (options, args) = parser.parse_args(command_args)
 468         if len(args) >= 1:
 469           if args[0] == "{":
 470               # caller forgot to quote the string"
 471               # mark arg[0] a string containing all args[n]
 472               args[0] = ' '.join(args)
 473           GuidStr = ParseGuidString (args[0])
 474           if GuidStr == "":
 475               # return Key of GuidNameDict for value args[0]
 476               GuidStr = [Key for Key, Value in guid_dict.iteritems() if Value == args[0]][0]
 477           GuidStr = GuidStr.upper()
 478     except:
 479         # if you don't handle exceptions, passing an incorrect argument to the OptionParser will cause LLDB to exit
 480         # (courtesy of OptParse dealing with argument errors by throwing SystemExit)
 481         result.SetError ("option parsing failed")
 482         return
 483
 484
 485     if len(args) >= 1:
 486         if GuidStr in guid_dict:
 487             print "%s = %s" % (guid_dict[GuidStr], GuidStr)
 488             print "%s = %s" % (guid_dict[GuidStr], GuidToCStructStr (GuidStr))
 489         else:
 490             print GuidStr
 491     else:
 492         # dump entire dictionary
 493         width = max(len(v) for k,v in guid_dict.iteritems())
 494         for value in sorted(guid_dict, key=guid_dict.get):
 495             print '%-*s %s %s' % (width, guid_dict[value], value, GuidToCStructStr(value))
 496
 497     return
 498
 499
 500 #
 501 ########## Code that runs when this script is imported into LLDB ###########
 502 #
 503 def __lldb_init_module (debugger, internal_dict):
 504     # This initializer is being run from LLDB in the embedded command interpreter
 505     # Make the options so we can generate the help text for the new LLDB
 506     # command line command prior to registering it with LLDB below
 507
 508     global guid_dict
 509
 510     # Source Guid.xref file if we can find it
 511     inputfile = os.getcwd()
 512     inputfile += os.sep + os.pardir + os.sep + 'FV' + os.sep + 'Guid.xref'
 513     with open(inputfile) as f:
 514         for line in f:
 515             data = line.split(' ')
 516             if len(data) >= 2:
 517                 guid_dict[data[0].upper()] = data[1].strip('\n')
 518
 519     # init EFI specific type formaters
 520     TypePrintFormating (debugger)
 521
 522
 523     # add guid command
 524     parser = create_guid_options()
 525     efi_guid_command.__doc__ = parser.format_help()
 526     debugger.HandleCommand('command script add -f lldbefi.efi_guid_command guid')
 527
 528
 529     Target = debugger.GetTargetAtIndex(0)
 530     if Target:
 531         Breakpoint = Target.BreakpointCreateByName('SecGdbScriptBreak')
 532         if Breakpoint.GetNumLocations() == 1:
 533             # Set the emulator breakpoints, if we are in the emulator
 534             debugger.HandleCommand("breakpoint command add -s python -F lldbefi.LoadEmulatorEfiSymbols {id}".format(id=Breakpoint.GetID()))
 535             print 'Type r to run emulator. SecLldbScriptBreak armed. EFI modules should now get source level debugging in the emulator.'