## @file
# This file is used to generate DEPEX file for module's dependency expression
#
# Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
## Import Modules
#
import sys
import os
import re
import traceback
from StringIO import StringIO
from struct import pack
from Common.BuildToolError import *
from Common.Misc import SaveFileOnChange
from Common.Misc import GuidStructureStringToGuidString
from Common import EdkLogger as EdkLogger
from Common.BuildVersion import gBUILD_VERSION
## Regular expression for matching "DEPENDENCY_START ... DEPENDENCY_END"
gStartClosePattern = re.compile(".*DEPENDENCY_START(.+)DEPENDENCY_END.*", re.S)
## Mapping between module type and EFI phase
gType2Phase = {
"BASE" : None,
"SEC" : "PEI",
"PEI_CORE" : "PEI",
"PEIM" : "PEI",
"DXE_CORE" : "DXE",
"DXE_DRIVER" : "DXE",
"DXE_SMM_DRIVER" : "DXE",
"DXE_RUNTIME_DRIVER": "DXE",
"DXE_SAL_DRIVER" : "DXE",
"UEFI_DRIVER" : "DXE",
"UEFI_APPLICATION" : "DXE",
"SMM_CORE" : "DXE",
}
## Convert dependency expression string into EFI internal representation
#
# DependencyExpression class is used to parse dependency expression string and
# convert it into its binary form.
#
class DependencyExpression:
ArchProtocols = set([
'665e3ff6-46cc-11d4-9a38-0090273fc14d', # 'gEfiBdsArchProtocolGuid'
'26baccb1-6f42-11d4-bce7-0080c73c8881', # 'gEfiCpuArchProtocolGuid'
'26baccb2-6f42-11d4-bce7-0080c73c8881', # 'gEfiMetronomeArchProtocolGuid'
'1da97072-bddc-4b30-99f1-72a0b56fff2a', # 'gEfiMonotonicCounterArchProtocolGuid'
'27cfac87-46cc-11d4-9a38-0090273fc14d', # 'gEfiRealTimeClockArchProtocolGuid'
'27cfac88-46cc-11d4-9a38-0090273fc14d', # 'gEfiResetArchProtocolGuid'
'b7dfb4e1-052f-449f-87be-9818fc91b733', # 'gEfiRuntimeArchProtocolGuid'
'a46423e3-4617-49f1-b9ff-d1bfa9115839', # 'gEfiSecurityArchProtocolGuid'
'26baccb3-6f42-11d4-bce7-0080c73c8881', # 'gEfiTimerArchProtocolGuid'
'6441f818-6362-4e44-b570-7dba31dd2453', # 'gEfiVariableWriteArchProtocolGuid'
'1e5668e2-8481-11d4-bcf1-0080c73c8881', # 'gEfiVariableArchProtocolGuid'
'665e3ff5-46cc-11d4-9a38-0090273fc14d' # 'gEfiWatchdogTimerArchProtocolGuid'
]
)
OpcodePriority = {
"AND" : 1,
"OR" : 1,
"NOT" : 2,
# "SOR" : 9,
# "BEFORE": 9,
# "AFTER" : 9,
}
Opcode = {
"PEI" : {
"PUSH" : 0x02,
"AND" : 0x03,
"OR" : 0x04,
"NOT" : 0x05,
"TRUE" : 0x06,
"FALSE" : 0x07,
"END" : 0x08
},
"DXE" : {
"BEFORE": 0x00,
"AFTER" : 0x01,
"PUSH" : 0x02,
"AND" : 0x03,
"OR" : 0x04,
"NOT" : 0x05,
"TRUE" : 0x06,
"FALSE" : 0x07,
"END" : 0x08,
"SOR" : 0x09
}
}
# all supported op codes and operands
SupportedOpcode = ["BEFORE", "AFTER", "PUSH", "AND", "OR", "NOT", "END", "SOR"]
SupportedOperand = ["TRUE", "FALSE"]
OpcodeWithSingleOperand = ['NOT', 'BEFORE', 'AFTER']
OpcodeWithTwoOperand = ['AND', 'OR']
# op code that should not be the last one
NonEndingOpcode = ["AND", "OR", "NOT", 'SOR']
# op code must not present at the same time
ExclusiveOpcode = ["BEFORE", "AFTER"]
# op code that should be the first one if it presents
AboveAllOpcode = ["SOR", "BEFORE", "AFTER"]
#
# open and close brace must be taken as individual tokens
#
TokenPattern = re.compile("(\(|\)|\{[^{}]+\{?[^{}]+\}?[ ]*\}|\w+)")
## Constructor
#
# @param Expression The list or string of dependency expression
# @param ModuleType The type of the module using the dependency expression
#
def __init__(self, Expression, ModuleType, Optimize=False):
self.ModuleType = ModuleType
self.Phase = gType2Phase[ModuleType]
if type(Expression) == type([]):
self.ExpressionString = " ".join(Expression)
self.TokenList = Expression
else:
self.ExpressionString = Expression
self.GetExpressionTokenList()
self.PostfixNotation = []
self.OpcodeList = []
self.GetPostfixNotation()
self.ValidateOpcode()
EdkLogger.debug(EdkLogger.DEBUG_8, repr(self))
if Optimize:
self.Optimize()
EdkLogger.debug(EdkLogger.DEBUG_8, "\n Optimized: " + repr(self))
def __str__(self):
return " ".join(self.TokenList)
def __repr__(self):
WellForm = ''
for Token in self.PostfixNotation:
if Token in self.SupportedOpcode:
WellForm += "\n " + Token
else:
WellForm += ' ' + Token
return WellForm
## Split the expression string into token list
def GetExpressionTokenList(self):
self.TokenList = self.TokenPattern.findall(self.ExpressionString)
## Convert token list into postfix notation
def GetPostfixNotation(self):
Stack = []
LastToken = ''
for Token in self.TokenList:
if Token == "(":
if LastToken not in self.SupportedOpcode + ['(', '', None]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: missing operator before open parentheses",
ExtraData="Near %s" % LastToken)
Stack.append(Token)
elif Token == ")":
if '(' not in Stack:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: mismatched parentheses",
ExtraData=str(self))
elif LastToken in self.SupportedOpcode + ['', None]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: missing operand before close parentheses",
ExtraData="Near %s" % LastToken)
while len(Stack) > 0:
if Stack[-1] == '(':
Stack.pop()
break
self.PostfixNotation.append(Stack.pop())
elif Token in self.OpcodePriority:
if Token == "NOT":
if LastToken not in self.SupportedOpcode + ['(', '', None]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: missing operator before NOT",
ExtraData="Near %s" % LastToken)
elif LastToken in self.SupportedOpcode + ['(', '', None]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: missing operand before " + Token,
ExtraData="Near %s" % LastToken)
while len(Stack) > 0:
if Stack[-1] == "(" or self.OpcodePriority[Token] >= self.OpcodePriority[Stack[-1]]:
break
self.PostfixNotation.append(Stack.pop())
Stack.append(Token)
self.OpcodeList.append(Token)
else:
if Token not in self.SupportedOpcode:
# not OP, take it as GUID
if LastToken not in self.SupportedOpcode + ['(', '', None]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: missing operator before %s" % Token,
ExtraData="Near %s" % LastToken)
if len(self.OpcodeList) == 0 or self.OpcodeList[-1] not in self.ExclusiveOpcode:
if Token not in self.SupportedOperand:
self.PostfixNotation.append("PUSH")
# check if OP is valid in this phase
elif Token in self.Opcode[self.Phase]:
if Token == "END":
break
self.OpcodeList.append(Token)
else:
EdkLogger.error("GenDepex", PARSER_ERROR,
"Opcode=%s doesn't supported in %s stage " % (Token, self.Phase),
ExtraData=str(self))
self.PostfixNotation.append(Token)
LastToken = Token
# there should not be parentheses in Stack
if '(' in Stack or ')' in Stack:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid dependency expression: mismatched parentheses",
ExtraData=str(self))
while len(Stack) > 0:
self.PostfixNotation.append(Stack.pop())
if self.PostfixNotation[-1] != 'END':
self.PostfixNotation.append("END")
## Validate the dependency expression
def ValidateOpcode(self):
for Op in self.AboveAllOpcode:
if Op in self.PostfixNotation:
if Op != self.PostfixNotation[0]:
EdkLogger.error("GenDepex", PARSER_ERROR, "%s should be the first opcode in the expression" % Op,
ExtraData=str(self))
if len(self.PostfixNotation) < 3:
EdkLogger.error("GenDepex", PARSER_ERROR, "Missing operand for %s" % Op,
ExtraData=str(self))
for Op in self.ExclusiveOpcode:
if Op in self.OpcodeList:
if len(self.OpcodeList) > 1:
EdkLogger.error("GenDepex", PARSER_ERROR, "%s should be the only opcode in the expression" % Op,
ExtraData=str(self))
if len(self.PostfixNotation) < 3:
EdkLogger.error("GenDepex", PARSER_ERROR, "Missing operand for %s" % Op,
ExtraData=str(self))
if self.TokenList[-1] != 'END' and self.TokenList[-1] in self.NonEndingOpcode:
EdkLogger.error("GenDepex", PARSER_ERROR, "Extra %s at the end of the dependency expression" % self.TokenList[-1],
ExtraData=str(self))
if self.TokenList[-1] == 'END' and self.TokenList[-2] in self.NonEndingOpcode:
EdkLogger.error("GenDepex", PARSER_ERROR, "Extra %s at the end of the dependency expression" % self.TokenList[-2],
ExtraData=str(self))
if "END" in self.TokenList and "END" != self.TokenList[-1]:
EdkLogger.error("GenDepex", PARSER_ERROR, "Extra expressions after END",
ExtraData=str(self))
## Simply optimize the dependency expression by removing duplicated operands
def Optimize(self):
ValidOpcode = list(set(self.OpcodeList))
if len(ValidOpcode) != 1 or ValidOpcode[0] not in ['AND', 'OR']:
return
Op = ValidOpcode[0]
NewOperand = []
AllOperand = set()
for Token in self.PostfixNotation:
if Token in self.SupportedOpcode or Token in NewOperand:
continue
AllOperand.add(Token)
if Token == 'TRUE':
if Op == 'AND':
continue
else:
NewOperand.append(Token)
break
elif Token == 'FALSE':
if Op == 'OR':
continue
else:
NewOperand.append(Token)
break
NewOperand.append(Token)
# don't generate depex if only TRUE operand left
if self.ModuleType == 'PEIM' and len(NewOperand) == 1 and NewOperand[0] == 'TRUE':
self.PostfixNotation = []
return
# don't generate depex if all operands are architecture protocols
if self.ModuleType in ['UEFI_DRIVER', 'DXE_DRIVER', 'DXE_RUNTIME_DRIVER', 'DXE_SAL_DRIVER', 'DXE_SMM_DRIVER'] and \
Op == 'AND' and \
self.ArchProtocols == set([GuidStructureStringToGuidString(Guid) for Guid in AllOperand]):
self.PostfixNotation = []
return
if len(NewOperand) == 0:
self.TokenList = list(AllOperand)
else:
self.TokenList = []
while True:
self.TokenList.append(NewOperand.pop(0))
if NewOperand == []:
break
self.TokenList.append(Op)
self.PostfixNotation = []
self.GetPostfixNotation()
## Convert a GUID value in C structure format into its binary form
#
# @param Guid The GUID value in C structure format
#
# @retval array The byte array representing the GUID value
#
def GetGuidValue(self, Guid):
GuidValueString = Guid.replace("{", "").replace("}", "").replace(" ", "")
GuidValueList = GuidValueString.split(",")
if len(GuidValueList) != 11:
EdkLogger.error("GenDepex", PARSER_ERROR, "Invalid GUID value string or opcode: %s" % Guid)
return pack("1I2H8B", *(int(value, 16) for value in GuidValueList))
## Save the binary form of dependency expression in file
#
# @param File The path of file. If None is given, put the data on console
#
# @retval True If the file doesn't exist or file is changed
# @retval False If file exists and is not changed.
#
def Generate(self, File=None):
Buffer = StringIO()
if len(self.PostfixNotation) == 0:
return False
for Item in self.PostfixNotation:
if Item in self.Opcode[self.Phase]:
Buffer.write(pack("B", self.Opcode[self.Phase][Item]))
elif Item in self.SupportedOpcode:
EdkLogger.error("GenDepex", FORMAT_INVALID,
"Opcode [%s] is not expected in %s phase" % (Item, self.Phase),
ExtraData=self.ExpressionString)
else:
Buffer.write(self.GetGuidValue(Item))
FilePath = ""
FileChangeFlag = True
if File == None:
sys.stdout.write(Buffer.getvalue())
FilePath = "STDOUT"
else:
FileChangeFlag = SaveFileOnChange(File, Buffer.getvalue(), True)
Buffer.close()
return FileChangeFlag
versionNumber = ("0.04" + " " + gBUILD_VERSION)
__version__ = "%prog Version " + versionNumber
__copyright__ = "Copyright (c) 2007-2010, Intel Corporation All rights reserved."
__usage__ = "%prog [options] [dependency_expression_file]"
## Parse command line options
#
# @retval OptionParser
#
def GetOptions():
from optparse import OptionParser
Parser = OptionParser(description=__copyright__, version=__version__, usage=__usage__)
Parser.add_option("-o", "--output", dest="OutputFile", default=None, metavar="FILE",
help="Specify the name of depex file to be generated")
Parser.add_option("-t", "--module-type", dest="ModuleType", default=None,
help="The type of module for which the dependency expression serves")
Parser.add_option("-e", "--dependency-expression", dest="Expression", default="",
help="The string of dependency expression. If this option presents, the input file will be ignored.")
Parser.add_option("-m", "--optimize", dest="Optimize", default=False, action="store_true",
help="Do some simple optimization on the expression.")
Parser.add_option("-v", "--verbose", dest="verbose", default=False, action="store_true",
help="build with verbose information")
Parser.add_option("-d", "--debug", action="store", type="int", help="Enable debug messages at specified level.")
Parser.add_option("-q", "--quiet", dest="quiet", default=False, action="store_true",
help="build with little information")
return Parser.parse_args()
## Entrance method
#
# @retval 0 Tool was successful
# @retval 1 Tool failed
#
def Main():
EdkLogger.Initialize()
Option, Input = GetOptions()
# Set log level
if Option.quiet:
EdkLogger.SetLevel(EdkLogger.QUIET)
elif Option.verbose:
EdkLogger.SetLevel(EdkLogger.VERBOSE)
elif Option.debug != None:
EdkLogger.SetLevel(Option.debug + 1)
else:
EdkLogger.SetLevel(EdkLogger.INFO)
try:
if Option.ModuleType == None or Option.ModuleType not in gType2Phase:
EdkLogger.error("GenDepex", OPTION_MISSING, "Module type is not specified or supported")
DxsFile = ''
if len(Input) > 0 and Option.Expression == "":
DxsFile = Input[0]
DxsString = open(DxsFile, 'r').read().replace("\n", " ").replace("\r", " ")
DxsString = gStartClosePattern.sub("\\1", DxsString)
elif Option.Expression != "":
if Option.Expression[0] == '"':
DxsString = Option.Expression[1:-1]
else:
DxsString = Option.Expression
else:
EdkLogger.error("GenDepex", OPTION_MISSING, "No expression string or file given")
Dpx = DependencyExpression(DxsString, Option.ModuleType, Option.Optimize)
if Option.OutputFile != None:
FileChangeFlag = Dpx.Generate(Option.OutputFile)
if not FileChangeFlag and DxsFile:
#
# Touch the output file if its time stamp is older than the original
# DXS file to avoid re-invoke this tool for the dependency check in build rule.
#
if os.stat(DxsFile)[8] > os.stat(Option.OutputFile)[8]:
os.utime(Option.OutputFile, None)
else:
Dpx.Generate()
except BaseException, X:
EdkLogger.quiet("")
if Option != None and Option.debug != None:
EdkLogger.quiet(traceback.format_exc())
else:
EdkLogger.quiet(str(X))
return 1
return 0
if __name__ == '__main__':
sys.exit(Main())